From 8db36dc847462be9be88d9d9245fa273cf5c8112 Mon Sep 17 00:00:00 2001 From: Dave Chapman Date: Mon, 11 Dec 2006 20:35:22 +0000 Subject: Delete libFLAC - it has't been used since October 2005 git-svn-id: svn://svn.rockbox.org/rockbox/trunk@11716 a1c6a512-1295-4272-9138-f99709370657 --- apps/codecs/libFLAC/stream_encoder.c | 3394 ---------------------------------- 1 file changed, 3394 deletions(-) delete mode 100644 apps/codecs/libFLAC/stream_encoder.c (limited to 'apps/codecs/libFLAC/stream_encoder.c') diff --git a/apps/codecs/libFLAC/stream_encoder.c b/apps/codecs/libFLAC/stream_encoder.c deleted file mode 100644 index 14f0815b8a..0000000000 --- a/apps/codecs/libFLAC/stream_encoder.c +++ /dev/null @@ -1,3394 +0,0 @@ -/* libFLAC - Free Lossless Audio Codec library - * Copyright (C) 2000,2001,2002,2003,2004,2005 Josh Coalson - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * - Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * - Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * - Neither the name of the Xiph.org Foundation nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#include -#include -#include "global.h" /* for malloc() */ -#include /* for memcpy() */ -#include "FLAC/assert.h" -#include "FLAC/stream_decoder.h" -#include "protected/stream_encoder.h" -#include "private/bitbuffer.h" -#include "private/bitmath.h" -#include "private/crc.h" -#include "private/cpu.h" -#include "private/fixed.h" -#include "private/format.h" -#include "private/lpc.h" -#include "private/md5.h" -#include "private/memory.h" -#include "private/stream_encoder_framing.h" - -#ifdef HAVE_CONFIG_H -#include -#endif - -#ifdef min -#undef min -#endif -#define min(x,y) ((x)<(y)?(x):(y)) - -#ifdef max -#undef max -#endif -#define max(x,y) ((x)>(y)?(x):(y)) - -typedef struct { - FLAC__int32 *data[FLAC__MAX_CHANNELS]; - unsigned size; /* of each data[] in samples */ - unsigned tail; -} verify_input_fifo; - -typedef struct { - const FLAC__byte *data; - unsigned capacity; - unsigned bytes; -} verify_output; - -typedef enum { - ENCODER_IN_MAGIC = 0, - ENCODER_IN_METADATA = 1, - ENCODER_IN_AUDIO = 2 -} EncoderStateHint; - -/*********************************************************************** - * - * Private class method prototypes - * - ***********************************************************************/ - -static void set_defaults_(FLAC__StreamEncoder *encoder); -static void free_(FLAC__StreamEncoder *encoder); -static FLAC__bool resize_buffers_(FLAC__StreamEncoder *encoder, unsigned new_size); -static FLAC__bool write_bitbuffer_(FLAC__StreamEncoder *encoder, unsigned samples); -static FLAC__bool process_frame_(FLAC__StreamEncoder *encoder, FLAC__bool is_last_frame); -static FLAC__bool process_subframes_(FLAC__StreamEncoder *encoder, FLAC__bool is_last_frame); - -static FLAC__bool process_subframe_( - FLAC__StreamEncoder *encoder, - unsigned min_partition_order, - unsigned max_partition_order, - FLAC__bool precompute_partition_sums, - const FLAC__FrameHeader *frame_header, - unsigned subframe_bps, - const FLAC__int32 integer_signal[], -#ifndef FLAC__INTEGER_ONLY_LIBRARY - const FLAC__real real_signal[], -#endif - FLAC__Subframe *subframe[2], - FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents[2], - FLAC__int32 *residual[2], - unsigned *best_subframe, - unsigned *best_bits -); - -static FLAC__bool add_subframe_( - FLAC__StreamEncoder *encoder, - const FLAC__FrameHeader *frame_header, - unsigned subframe_bps, - const FLAC__Subframe *subframe, - FLAC__BitBuffer *frame -); - -static unsigned evaluate_constant_subframe_( - const FLAC__int32 signal, - unsigned subframe_bps, - FLAC__Subframe *subframe -); - -static unsigned evaluate_fixed_subframe_( - FLAC__StreamEncoder *encoder, - const FLAC__int32 signal[], - FLAC__int32 residual[], - FLAC__uint32 abs_residual[], - FLAC__uint64 abs_residual_partition_sums[], - unsigned raw_bits_per_partition[], - unsigned blocksize, - unsigned subframe_bps, - unsigned order, - unsigned rice_parameter, - unsigned min_partition_order, - unsigned max_partition_order, - FLAC__bool precompute_partition_sums, - FLAC__bool do_escape_coding, - unsigned rice_parameter_search_dist, - FLAC__Subframe *subframe, - FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents -); - -#ifndef FLAC__INTEGER_ONLY_LIBRARY -static unsigned evaluate_lpc_subframe_( - FLAC__StreamEncoder *encoder, - const FLAC__int32 signal[], - FLAC__int32 residual[], - FLAC__uint32 abs_residual[], - FLAC__uint64 abs_residual_partition_sums[], - unsigned raw_bits_per_partition[], - const FLAC__real lp_coeff[], - unsigned blocksize, - unsigned subframe_bps, - unsigned order, - unsigned qlp_coeff_precision, - unsigned rice_parameter, - unsigned min_partition_order, - unsigned max_partition_order, - FLAC__bool precompute_partition_sums, - FLAC__bool do_escape_coding, - unsigned rice_parameter_search_dist, - FLAC__Subframe *subframe, - FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents -); -#endif - -static unsigned evaluate_verbatim_subframe_( - const FLAC__int32 signal[], - unsigned blocksize, - unsigned subframe_bps, - FLAC__Subframe *subframe -); - -static unsigned find_best_partition_order_( - struct FLAC__StreamEncoderPrivate *private_, - const FLAC__int32 residual[], - FLAC__uint32 abs_residual[], - FLAC__uint64 abs_residual_partition_sums[], - unsigned raw_bits_per_partition[], - unsigned residual_samples, - unsigned predictor_order, - unsigned rice_parameter, - unsigned min_partition_order, - unsigned max_partition_order, - FLAC__bool precompute_partition_sums, - FLAC__bool do_escape_coding, - unsigned rice_parameter_search_dist, - FLAC__EntropyCodingMethod_PartitionedRice *best_partitioned_rice -); - -static void precompute_partition_info_sums_( - const FLAC__uint32 abs_residual[], - FLAC__uint64 abs_residual_partition_sums[], - unsigned residual_samples, - unsigned predictor_order, - unsigned min_partition_order, - unsigned max_partition_order -); - -static void precompute_partition_info_escapes_( - const FLAC__int32 residual[], - unsigned raw_bits_per_partition[], - unsigned residual_samples, - unsigned predictor_order, - unsigned min_partition_order, - unsigned max_partition_order -); - -#ifdef DONT_ESTIMATE_RICE_BITS -static FLAC__bool set_partitioned_rice_( - const FLAC__uint32 abs_residual[], - const FLAC__int32 residual[], - const unsigned residual_samples, - const unsigned predictor_order, - const unsigned suggested_rice_parameter, - const unsigned rice_parameter_search_dist, - const unsigned partition_order, - FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents, - unsigned *bits -); - -static FLAC__bool set_partitioned_rice_with_precompute_( - const FLAC__int32 residual[], - const FLAC__uint64 abs_residual_partition_sums[], - const unsigned raw_bits_per_partition[], - const unsigned residual_samples, - const unsigned predictor_order, - const unsigned suggested_rice_parameter, - const unsigned rice_parameter_search_dist, - const unsigned partition_order, - const FLAC__bool search_for_escapes, - FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents, - unsigned *bits -); -#else -static FLAC__bool set_partitioned_rice_( - const FLAC__uint32 abs_residual[], - const unsigned residual_samples, - const unsigned predictor_order, - const unsigned suggested_rice_parameter, - const unsigned rice_parameter_search_dist, - const unsigned partition_order, - FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents, - unsigned *bits -); - -static FLAC__bool set_partitioned_rice_with_precompute_( - const FLAC__uint32 abs_residual[], - const FLAC__uint64 abs_residual_partition_sums[], - const unsigned raw_bits_per_partition[], - const unsigned residual_samples, - const unsigned predictor_order, - const unsigned suggested_rice_parameter, - const unsigned rice_parameter_search_dist, - const unsigned partition_order, - const FLAC__bool search_for_escapes, - FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents, - unsigned *bits -); -#endif - -static unsigned get_wasted_bits_(FLAC__int32 signal[], unsigned samples); - -/* verify-related routines: */ -static void append_to_verify_fifo_( - verify_input_fifo *fifo, - const FLAC__int32 * const input[], - unsigned input_offset, - unsigned channels, - unsigned wide_samples -); - -static void append_to_verify_fifo_interleaved_( - verify_input_fifo *fifo, - const FLAC__int32 input[], - unsigned input_offset, - unsigned channels, - unsigned wide_samples -); - -static FLAC__StreamDecoderReadStatus verify_read_callback_( - const FLAC__StreamDecoder *decoder, - FLAC__byte buffer[], - unsigned *bytes, - void *client_data -); - -static FLAC__StreamDecoderWriteStatus verify_write_callback_( - const FLAC__StreamDecoder *decoder, - const FLAC__Frame *frame, - const FLAC__int32 * const buffer[], - void *client_data -); - -static void verify_metadata_callback_( - const FLAC__StreamDecoder *decoder, - const FLAC__StreamMetadata *metadata, - void *client_data -); - -static void verify_error_callback_( - const FLAC__StreamDecoder *decoder, - FLAC__StreamDecoderErrorStatus status, - void *client_data -); - - -/*********************************************************************** - * - * Private class data - * - ***********************************************************************/ - -typedef struct FLAC__StreamEncoderPrivate { - unsigned input_capacity; /* current size (in samples) of the signal and residual buffers */ - FLAC__int32 *integer_signal[FLAC__MAX_CHANNELS]; /* the integer version of the input signal */ - FLAC__int32 *integer_signal_mid_side[2]; /* the integer version of the mid-side input signal (stereo only) */ -#ifndef FLAC__INTEGER_ONLY_LIBRARY - FLAC__real *real_signal[FLAC__MAX_CHANNELS]; /* the floating-point version of the input signal */ - FLAC__real *real_signal_mid_side[2]; /* the floating-point version of the mid-side input signal (stereo only) */ -#endif - unsigned subframe_bps[FLAC__MAX_CHANNELS]; /* the effective bits per sample of the input signal (stream bps - wasted bits) */ - unsigned subframe_bps_mid_side[2]; /* the effective bits per sample of the mid-side input signal (stream bps - wasted bits + 0/1) */ - FLAC__int32 *residual_workspace[FLAC__MAX_CHANNELS][2]; /* each channel has a candidate and best workspace where the subframe residual signals will be stored */ - FLAC__int32 *residual_workspace_mid_side[2][2]; - FLAC__Subframe subframe_workspace[FLAC__MAX_CHANNELS][2]; - FLAC__Subframe subframe_workspace_mid_side[2][2]; - FLAC__Subframe *subframe_workspace_ptr[FLAC__MAX_CHANNELS][2]; - FLAC__Subframe *subframe_workspace_ptr_mid_side[2][2]; - FLAC__EntropyCodingMethod_PartitionedRiceContents partitioned_rice_contents_workspace[FLAC__MAX_CHANNELS][2]; - FLAC__EntropyCodingMethod_PartitionedRiceContents partitioned_rice_contents_workspace_mid_side[FLAC__MAX_CHANNELS][2]; - FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents_workspace_ptr[FLAC__MAX_CHANNELS][2]; - FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents_workspace_ptr_mid_side[FLAC__MAX_CHANNELS][2]; - unsigned best_subframe[FLAC__MAX_CHANNELS]; /* index into the above workspaces */ - unsigned best_subframe_mid_side[2]; - unsigned best_subframe_bits[FLAC__MAX_CHANNELS]; /* size in bits of the best subframe for each channel */ - unsigned best_subframe_bits_mid_side[2]; - FLAC__uint32 *abs_residual; /* workspace where abs(candidate residual) is stored */ - FLAC__uint64 *abs_residual_partition_sums; /* workspace where the sum of abs(candidate residual) for each partition is stored */ - unsigned *raw_bits_per_partition; /* workspace where the sum of silog2(candidate residual) for each partition is stored */ - FLAC__BitBuffer *frame; /* the current frame being worked on */ - unsigned loose_mid_side_stereo_frames; /* rounded number of frames the encoder will use before trying both independent and mid/side frames again */ - unsigned loose_mid_side_stereo_frame_count; /* number of frames using the current channel assignment */ - FLAC__ChannelAssignment last_channel_assignment; - FLAC__StreamMetadata metadata; - unsigned current_sample_number; - unsigned current_frame_number; - struct FLAC__MD5Context md5context; - FLAC__CPUInfo cpuinfo; -#ifndef FLAC__INTEGER_ONLY_LIBRARY - unsigned (*local_fixed_compute_best_predictor)(const FLAC__int32 data[], unsigned data_len, FLAC__float residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]); -#else - unsigned (*local_fixed_compute_best_predictor)(const FLAC__int32 data[], unsigned data_len, FLAC__fixedpoint residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]); -#endif -#ifndef FLAC__INTEGER_ONLY_LIBRARY - void (*local_lpc_compute_autocorrelation)(const FLAC__real data[], unsigned data_len, unsigned lag, FLAC__real autoc[]); - void (*local_lpc_compute_residual_from_qlp_coefficients)(const FLAC__int32 *data, unsigned data_len, const FLAC__int32 qlp_coeff[], unsigned order, int lp_quantization, FLAC__int32 residual[]); - void (*local_lpc_compute_residual_from_qlp_coefficients_64bit)(const FLAC__int32 *data, unsigned data_len, const FLAC__int32 qlp_coeff[], unsigned order, int lp_quantization, FLAC__int32 residual[]); - void (*local_lpc_compute_residual_from_qlp_coefficients_16bit)(const FLAC__int32 *data, unsigned data_len, const FLAC__int32 qlp_coeff[], unsigned order, int lp_quantization, FLAC__int32 residual[]); -#endif - FLAC__bool use_wide_by_block; /* use slow 64-bit versions of some functions because of the block size */ - FLAC__bool use_wide_by_partition; /* use slow 64-bit versions of some functions because of the min partition order and blocksize */ - FLAC__bool use_wide_by_order; /* use slow 64-bit versions of some functions because of the lpc order */ - FLAC__bool precompute_partition_sums; /* our initial guess as to whether precomputing the partitions sums will be a speed improvement */ - FLAC__bool disable_constant_subframes; - FLAC__bool disable_fixed_subframes; - FLAC__bool disable_verbatim_subframes; - FLAC__StreamEncoderWriteCallback write_callback; - FLAC__StreamEncoderMetadataCallback metadata_callback; - void *client_data; - /* unaligned (original) pointers to allocated data */ - FLAC__int32 *integer_signal_unaligned[FLAC__MAX_CHANNELS]; - FLAC__int32 *integer_signal_mid_side_unaligned[2]; -#ifndef FLAC__INTEGER_ONLY_LIBRARY - FLAC__real *real_signal_unaligned[FLAC__MAX_CHANNELS]; - FLAC__real *real_signal_mid_side_unaligned[2]; -#endif - FLAC__int32 *residual_workspace_unaligned[FLAC__MAX_CHANNELS][2]; - FLAC__int32 *residual_workspace_mid_side_unaligned[2][2]; - FLAC__uint32 *abs_residual_unaligned; - FLAC__uint64 *abs_residual_partition_sums_unaligned; - unsigned *raw_bits_per_partition_unaligned; - /* - * These fields have been moved here from private function local - * declarations merely to save stack space during encoding. - */ -#ifndef FLAC__INTEGER_ONLY_LIBRARY - FLAC__real lp_coeff[FLAC__MAX_LPC_ORDER][FLAC__MAX_LPC_ORDER]; /* from process_subframe_() */ -#endif - FLAC__EntropyCodingMethod_PartitionedRiceContents partitioned_rice_contents_extra[2]; /* from find_best_partition_order_() */ - /* - * The data for the verify section - */ - struct { - FLAC__StreamDecoder *decoder; - EncoderStateHint state_hint; - FLAC__bool needs_magic_hack; - verify_input_fifo input_fifo; - verify_output output; - struct { - FLAC__uint64 absolute_sample; - unsigned frame_number; - unsigned channel; - unsigned sample; - FLAC__int32 expected; - FLAC__int32 got; - } error_stats; - } verify; - FLAC__bool is_being_deleted; /* if true, call to ..._finish() from ..._delete() will not call the callbacks */ -} FLAC__StreamEncoderPrivate; - -/*********************************************************************** - * - * Public static class data - * - ***********************************************************************/ - -FLAC_API const char * const FLAC__StreamEncoderStateString[] = { - "FLAC__STREAM_ENCODER_OK", - "FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR", - "FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA", - "FLAC__STREAM_ENCODER_INVALID_CALLBACK", - "FLAC__STREAM_ENCODER_INVALID_NUMBER_OF_CHANNELS", - "FLAC__STREAM_ENCODER_INVALID_BITS_PER_SAMPLE", - "FLAC__STREAM_ENCODER_INVALID_SAMPLE_RATE", - "FLAC__STREAM_ENCODER_INVALID_BLOCK_SIZE", - "FLAC__STREAM_ENCODER_INVALID_MAX_LPC_ORDER", - "FLAC__STREAM_ENCODER_INVALID_QLP_COEFF_PRECISION", - "FLAC__STREAM_ENCODER_MID_SIDE_CHANNELS_MISMATCH", - "FLAC__STREAM_ENCODER_MID_SIDE_SAMPLE_SIZE_MISMATCH", - "FLAC__STREAM_ENCODER_ILLEGAL_MID_SIDE_FORCE", - "FLAC__STREAM_ENCODER_BLOCK_SIZE_TOO_SMALL_FOR_LPC_ORDER", - "FLAC__STREAM_ENCODER_NOT_STREAMABLE", - "FLAC__STREAM_ENCODER_FRAMING_ERROR", - "FLAC__STREAM_ENCODER_INVALID_METADATA", - "FLAC__STREAM_ENCODER_FATAL_ERROR_WHILE_ENCODING", - "FLAC__STREAM_ENCODER_FATAL_ERROR_WHILE_WRITING", - "FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR", - "FLAC__STREAM_ENCODER_ALREADY_INITIALIZED", - "FLAC__STREAM_ENCODER_UNINITIALIZED" -}; - -FLAC_API const char * const FLAC__StreamEncoderWriteStatusString[] = { - "FLAC__STREAM_ENCODER_WRITE_STATUS_OK", - "FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR" -}; - -/*********************************************************************** - * - * Class constructor/destructor - * - */ -FLAC_API FLAC__StreamEncoder *FLAC__stream_encoder_new() -{ - FLAC__StreamEncoder *encoder; - unsigned i; - - FLAC__ASSERT(sizeof(int) >= 4); /* we want to die right away if this is not true */ - - encoder = (FLAC__StreamEncoder*)calloc(1, sizeof(FLAC__StreamEncoder)); - if(encoder == 0) { - return 0; - } - - encoder->protected_ = (FLAC__StreamEncoderProtected*)calloc(1, sizeof(FLAC__StreamEncoderProtected)); - if(encoder->protected_ == 0) { - free(encoder); - return 0; - } - - encoder->private_ = (FLAC__StreamEncoderPrivate*)calloc(1, sizeof(FLAC__StreamEncoderPrivate)); - if(encoder->private_ == 0) { - free(encoder->protected_); - free(encoder); - return 0; - } - - encoder->private_->frame = FLAC__bitbuffer_new(); - if(encoder->private_->frame == 0) { - free(encoder->private_); - free(encoder->protected_); - free(encoder); - return 0; - } - - set_defaults_(encoder); - - encoder->private_->is_being_deleted = false; - - for(i = 0; i < FLAC__MAX_CHANNELS; i++) { - encoder->private_->subframe_workspace_ptr[i][0] = &encoder->private_->subframe_workspace[i][0]; - encoder->private_->subframe_workspace_ptr[i][1] = &encoder->private_->subframe_workspace[i][1]; - } - for(i = 0; i < 2; i++) { - encoder->private_->subframe_workspace_ptr_mid_side[i][0] = &encoder->private_->subframe_workspace_mid_side[i][0]; - encoder->private_->subframe_workspace_ptr_mid_side[i][1] = &encoder->private_->subframe_workspace_mid_side[i][1]; - } - for(i = 0; i < FLAC__MAX_CHANNELS; i++) { - encoder->private_->partitioned_rice_contents_workspace_ptr[i][0] = &encoder->private_->partitioned_rice_contents_workspace[i][0]; - encoder->private_->partitioned_rice_contents_workspace_ptr[i][1] = &encoder->private_->partitioned_rice_contents_workspace[i][1]; - } - for(i = 0; i < 2; i++) { - encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[i][0] = &encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0]; - encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[i][1] = &encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1]; - } - - for(i = 0; i < FLAC__MAX_CHANNELS; i++) { - FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace[i][0]); - FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace[i][1]); - } - for(i = 0; i < 2; i++) { - FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0]); - FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1]); - } - for(i = 0; i < 2; i++) - FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_extra[i]); - - encoder->protected_->state = FLAC__STREAM_ENCODER_UNINITIALIZED; - - return encoder; -} - -FLAC_API void FLAC__stream_encoder_delete(FLAC__StreamEncoder *encoder) -{ - unsigned i; - - FLAC__ASSERT(0 != encoder); - FLAC__ASSERT(0 != encoder->protected_); - FLAC__ASSERT(0 != encoder->private_); - FLAC__ASSERT(0 != encoder->private_->frame); - - encoder->private_->is_being_deleted = true; - - FLAC__stream_encoder_finish(encoder); - - if(0 != encoder->private_->verify.decoder) - FLAC__stream_decoder_delete(encoder->private_->verify.decoder); - - for(i = 0; i < FLAC__MAX_CHANNELS; i++) { - FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace[i][0]); - FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace[i][1]); - } - for(i = 0; i < 2; i++) { - FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0]); - FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1]); - } - for(i = 0; i < 2; i++) - FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_extra[i]); - - FLAC__bitbuffer_delete(encoder->private_->frame); - free(encoder->private_); - free(encoder->protected_); - free(encoder); -} - -/*********************************************************************** - * - * Public class methods - * - ***********************************************************************/ - -FLAC_API FLAC__StreamEncoderState FLAC__stream_encoder_init(FLAC__StreamEncoder *encoder) -{ - unsigned i; - FLAC__bool metadata_has_seektable, metadata_has_vorbis_comment; - - FLAC__ASSERT(0 != encoder); - - if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) - return encoder->protected_->state = FLAC__STREAM_ENCODER_ALREADY_INITIALIZED; - - encoder->protected_->state = FLAC__STREAM_ENCODER_OK; - - if(0 == encoder->private_->write_callback || 0 == encoder->private_->metadata_callback) - return encoder->protected_->state = FLAC__STREAM_ENCODER_INVALID_CALLBACK; - - if(encoder->protected_->channels == 0 || encoder->protected_->channels > FLAC__MAX_CHANNELS) - return encoder->protected_->state = FLAC__STREAM_ENCODER_INVALID_NUMBER_OF_CHANNELS; - - if(encoder->protected_->do_mid_side_stereo && encoder->protected_->channels != 2) - return encoder->protected_->state = FLAC__STREAM_ENCODER_MID_SIDE_CHANNELS_MISMATCH; - - if(encoder->protected_->loose_mid_side_stereo && !encoder->protected_->do_mid_side_stereo) - return encoder->protected_->state = FLAC__STREAM_ENCODER_ILLEGAL_MID_SIDE_FORCE; - - if(encoder->protected_->bits_per_sample >= 32) - encoder->protected_->do_mid_side_stereo = false; /* since we do 32-bit math, the side channel would have 33 bps and overflow */ - - if(encoder->protected_->bits_per_sample < FLAC__MIN_BITS_PER_SAMPLE || encoder->protected_->bits_per_sample > FLAC__REFERENCE_CODEC_MAX_BITS_PER_SAMPLE) - return encoder->protected_->state = FLAC__STREAM_ENCODER_INVALID_BITS_PER_SAMPLE; - - if(!FLAC__format_sample_rate_is_valid(encoder->protected_->sample_rate)) - return encoder->protected_->state = FLAC__STREAM_ENCODER_INVALID_SAMPLE_RATE; - - if(encoder->protected_->blocksize < FLAC__MIN_BLOCK_SIZE || encoder->protected_->blocksize > FLAC__MAX_BLOCK_SIZE) - return encoder->protected_->state = FLAC__STREAM_ENCODER_INVALID_BLOCK_SIZE; - - if(encoder->protected_->max_lpc_order > FLAC__MAX_LPC_ORDER) - return encoder->protected_->state = FLAC__STREAM_ENCODER_INVALID_MAX_LPC_ORDER; - - if(encoder->protected_->blocksize < encoder->protected_->max_lpc_order) - return encoder->protected_->state = FLAC__STREAM_ENCODER_BLOCK_SIZE_TOO_SMALL_FOR_LPC_ORDER; - - if(encoder->protected_->qlp_coeff_precision == 0) { - if(encoder->protected_->bits_per_sample < 16) { - /* @@@ need some data about how to set this here w.r.t. blocksize and sample rate */ - /* @@@ until then we'll make a guess */ - encoder->protected_->qlp_coeff_precision = max(FLAC__MIN_QLP_COEFF_PRECISION, 2 + encoder->protected_->bits_per_sample / 2); - } - else if(encoder->protected_->bits_per_sample == 16) { - if(encoder->protected_->blocksize <= 192) - encoder->protected_->qlp_coeff_precision = 7; - else if(encoder->protected_->blocksize <= 384) - encoder->protected_->qlp_coeff_precision = 8; - else if(encoder->protected_->blocksize <= 576) - encoder->protected_->qlp_coeff_precision = 9; - else if(encoder->protected_->blocksize <= 1152) - encoder->protected_->qlp_coeff_precision = 10; - else if(encoder->protected_->blocksize <= 2304) - encoder->protected_->qlp_coeff_precision = 11; - else if(encoder->protected_->blocksize <= 4608) - encoder->protected_->qlp_coeff_precision = 12; - else - encoder->protected_->qlp_coeff_precision = 13; - } - else { - if(encoder->protected_->blocksize <= 384) - encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION-2; - else if(encoder->protected_->blocksize <= 1152) - encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION-1; - else - encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION; - } - FLAC__ASSERT(encoder->protected_->qlp_coeff_precision <= FLAC__MAX_QLP_COEFF_PRECISION); - } - else if(encoder->protected_->qlp_coeff_precision < FLAC__MIN_QLP_COEFF_PRECISION || encoder->protected_->qlp_coeff_precision > FLAC__MAX_QLP_COEFF_PRECISION) - return encoder->protected_->state = FLAC__STREAM_ENCODER_INVALID_QLP_COEFF_PRECISION; - - if(encoder->protected_->streamable_subset) { - if( - encoder->protected_->blocksize != 192 && - encoder->protected_->blocksize != 576 && - encoder->protected_->blocksize != 1152 && - encoder->protected_->blocksize != 2304 && - encoder->protected_->blocksize != 4608 && - encoder->protected_->blocksize != 256 && - encoder->protected_->blocksize != 512 && - encoder->protected_->blocksize != 1024 && - encoder->protected_->blocksize != 2048 && - encoder->protected_->blocksize != 4096 && - encoder->protected_->blocksize != 8192 && - encoder->protected_->blocksize != 16384 - ) - return encoder->protected_->state = FLAC__STREAM_ENCODER_NOT_STREAMABLE; - if( - encoder->protected_->sample_rate != 8000 && - encoder->protected_->sample_rate != 16000 && - encoder->protected_->sample_rate != 22050 && - encoder->protected_->sample_rate != 24000 && - encoder->protected_->sample_rate != 32000 && - encoder->protected_->sample_rate != 44100 && - encoder->protected_->sample_rate != 48000 && - encoder->protected_->sample_rate != 96000 - ) - return encoder->protected_->state = FLAC__STREAM_ENCODER_NOT_STREAMABLE; - if( - encoder->protected_->bits_per_sample != 8 && - encoder->protected_->bits_per_sample != 12 && - encoder->protected_->bits_per_sample != 16 && - encoder->protected_->bits_per_sample != 20 && - encoder->protected_->bits_per_sample != 24 - ) - return encoder->protected_->state = FLAC__STREAM_ENCODER_NOT_STREAMABLE; - if(encoder->protected_->max_residual_partition_order > FLAC__SUBSET_MAX_RICE_PARTITION_ORDER) - return encoder->protected_->state = FLAC__STREAM_ENCODER_NOT_STREAMABLE; - } - - if(encoder->protected_->max_residual_partition_order >= (1u << FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN)) - encoder->protected_->max_residual_partition_order = (1u << FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN) - 1; - if(encoder->protected_->min_residual_partition_order >= encoder->protected_->max_residual_partition_order) - encoder->protected_->min_residual_partition_order = encoder->protected_->max_residual_partition_order; - - /* validate metadata */ - if(0 == encoder->protected_->metadata && encoder->protected_->num_metadata_blocks > 0) - return encoder->protected_->state = FLAC__STREAM_ENCODER_INVALID_METADATA; - metadata_has_seektable = false; - metadata_has_vorbis_comment = false; - for(i = 0; i < encoder->protected_->num_metadata_blocks; i++) { - if(encoder->protected_->metadata[i]->type == FLAC__METADATA_TYPE_STREAMINFO) - return encoder->protected_->state = FLAC__STREAM_ENCODER_INVALID_METADATA; - else if(encoder->protected_->metadata[i]->type == FLAC__METADATA_TYPE_SEEKTABLE) { - if(metadata_has_seektable) /* only one is allowed */ - return encoder->protected_->state = FLAC__STREAM_ENCODER_INVALID_METADATA; - metadata_has_seektable = true; - if(!FLAC__format_seektable_is_legal(&encoder->protected_->metadata[i]->data.seek_table)) - return encoder->protected_->state = FLAC__STREAM_ENCODER_INVALID_METADATA; - } - else if(encoder->protected_->metadata[i]->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) { - if(metadata_has_vorbis_comment) /* only one is allowed */ - return encoder->protected_->state = FLAC__STREAM_ENCODER_INVALID_METADATA; - metadata_has_vorbis_comment = true; - } - else if(encoder->protected_->metadata[i]->type == FLAC__METADATA_TYPE_CUESHEET) { - if(!FLAC__format_cuesheet_is_legal(&encoder->protected_->metadata[i]->data.cue_sheet, encoder->protected_->metadata[i]->data.cue_sheet.is_cd, /*violation=*/0)) - return encoder->protected_->state = FLAC__STREAM_ENCODER_INVALID_METADATA; - } - } - - encoder->private_->input_capacity = 0; - for(i = 0; i < encoder->protected_->channels; i++) { - encoder->private_->integer_signal_unaligned[i] = encoder->private_->integer_signal[i] = 0; -#ifndef FLAC__INTEGER_ONLY_LIBRARY - encoder->private_->real_signal_unaligned[i] = encoder->private_->real_signal[i] = 0; -#endif - } - for(i = 0; i < 2; i++) { - encoder->private_->integer_signal_mid_side_unaligned[i] = encoder->private_->integer_signal_mid_side[i] = 0; -#ifndef FLAC__INTEGER_ONLY_LIBRARY - encoder->private_->real_signal_mid_side_unaligned[i] = encoder->private_->real_signal_mid_side[i] = 0; -#endif - } - for(i = 0; i < encoder->protected_->channels; i++) { - encoder->private_->residual_workspace_unaligned[i][0] = encoder->private_->residual_workspace[i][0] = 0; - encoder->private_->residual_workspace_unaligned[i][1] = encoder->private_->residual_workspace[i][1] = 0; - encoder->private_->best_subframe[i] = 0; - } - for(i = 0; i < 2; i++) { - encoder->private_->residual_workspace_mid_side_unaligned[i][0] = encoder->private_->residual_workspace_mid_side[i][0] = 0; - encoder->private_->residual_workspace_mid_side_unaligned[i][1] = encoder->private_->residual_workspace_mid_side[i][1] = 0; - encoder->private_->best_subframe_mid_side[i] = 0; - } - encoder->private_->abs_residual_unaligned = encoder->private_->abs_residual = 0; - encoder->private_->abs_residual_partition_sums_unaligned = encoder->private_->abs_residual_partition_sums = 0; - encoder->private_->raw_bits_per_partition_unaligned = encoder->private_->raw_bits_per_partition = 0; -#ifndef FLAC__INTEGER_ONLY_LIBRARY - encoder->private_->loose_mid_side_stereo_frames = (unsigned)((FLAC__double)encoder->protected_->sample_rate * 0.4 / (FLAC__double)encoder->protected_->blocksize + 0.5); -#else - /* 26214 is the approximate fixed-point equivalent to 0.4 (0.4 * 2^16) */ - /* sample rate can be up to 655350 Hz, and thus use 20 bits, so we do the multiply÷ by hand */ - FLAC__ASSERT(FLAC__MAX_SAMPLE_RATE <= 655350); - FLAC__ASSERT(FLAC__MAX_BLOCK_SIZE <= 65535); - FLAC__ASSERT(encoder->protected_->sample_rate <= 655350); - FLAC__ASSERT(encoder->protected_->blocksize <= 65535); - encoder->private_->loose_mid_side_stereo_frames = (unsigned)FLAC__fixedpoint_trunc((((FLAC__uint64)(encoder->protected_->sample_rate) * (FLAC__uint64)(26214)) << 16) / (encoder->protected_->blocksize<<16) + FLAC__FP_ONE_HALF); -#endif - if(encoder->private_->loose_mid_side_stereo_frames == 0) - encoder->private_->loose_mid_side_stereo_frames = 1; - encoder->private_->loose_mid_side_stereo_frame_count = 0; - encoder->private_->current_sample_number = 0; - encoder->private_->current_frame_number = 0; - - encoder->private_->use_wide_by_block = (encoder->protected_->bits_per_sample + FLAC__bitmath_ilog2(encoder->protected_->blocksize)+1 > 30); - encoder->private_->use_wide_by_order = (encoder->protected_->bits_per_sample + FLAC__bitmath_ilog2(max(encoder->protected_->max_lpc_order, FLAC__MAX_FIXED_ORDER))+1 > 30); /*@@@ need to use this? */ - encoder->private_->use_wide_by_partition = (false); /*@@@ need to set this */ - - /* - * get the CPU info and set the function pointers - */ - FLAC__cpu_info(&encoder->private_->cpuinfo); - /* first default to the non-asm routines */ -#ifndef FLAC__INTEGER_ONLY_LIBRARY - encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation; -#endif - encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor; -#ifndef FLAC__INTEGER_ONLY_LIBRARY - encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients; - encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_64bit = FLAC__lpc_compute_residual_from_qlp_coefficients_wide; - encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients; -#endif - /* now override with asm where appropriate */ -#ifndef FLAC__INTEGER_ONLY_LIBRARY -# ifndef FLAC__NO_ASM - if(encoder->private_->cpuinfo.use_asm) { -# ifdef FLAC__CPU_IA32 - FLAC__ASSERT(encoder->private_->cpuinfo.type == FLAC__CPUINFO_TYPE_IA32); -# ifdef FLAC__HAS_NASM -# ifdef FLAC__SSE_OS - if(encoder->private_->cpuinfo.data.ia32.sse) { - if(encoder->protected_->max_lpc_order < 4) - encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_4; - else if(encoder->protected_->max_lpc_order < 8) - encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_8; - else if(encoder->protected_->max_lpc_order < 12) - encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_12; - else - encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32; - } - else -# endif /* FLAC__SSE_OS */ - if(encoder->private_->cpuinfo.data.ia32._3dnow) - encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_3dnow; - else - encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32; - if(encoder->private_->cpuinfo.data.ia32.mmx) { - encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32; - encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32_mmx; - } - else { - encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32; - encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32; - } - if(encoder->private_->cpuinfo.data.ia32.mmx && encoder->private_->cpuinfo.data.ia32.cmov) - encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor_asm_ia32_mmx_cmov; -# endif /* FLAC__HAS_NASM */ -# endif /* FLAC__CPU_IA32 */ - } -# endif /* !FLAC__NO_ASM */ -#endif /* !FLAC__INTEGER_ONLY_LIBRARY */ - /* finally override based on wide-ness if necessary */ - if(encoder->private_->use_wide_by_block) { - encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor_wide; - } - - /* we require precompute_partition_sums if do_escape_coding because of their intertwined nature */ - encoder->private_->precompute_partition_sums = (encoder->protected_->max_residual_partition_order > encoder->protected_->min_residual_partition_order) || encoder->protected_->do_escape_coding; - - if(!resize_buffers_(encoder, encoder->protected_->blocksize)) { - /* the above function sets the state for us in case of an error */ - return encoder->protected_->state; - } - - if(!FLAC__bitbuffer_init(encoder->private_->frame)) - return encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR; - - /* - * Set up the verify stuff if necessary - */ - if(encoder->protected_->verify) { - /* - * First, set up the fifo which will hold the - * original signal to compare against - */ - encoder->private_->verify.input_fifo.size = encoder->protected_->blocksize; - for(i = 0; i < encoder->protected_->channels; i++) { - if(0 == (encoder->private_->verify.input_fifo.data[i] = (FLAC__int32*)malloc(sizeof(FLAC__int32) * encoder->private_->verify.input_fifo.size))) - return encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR; - } - encoder->private_->verify.input_fifo.tail = 0; - - /* - * Now set up a stream decoder for verification - */ - encoder->private_->verify.decoder = FLAC__stream_decoder_new(); - if(0 == encoder->private_->verify.decoder) - return encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR; - - FLAC__stream_decoder_set_read_callback(encoder->private_->verify.decoder, verify_read_callback_); - FLAC__stream_decoder_set_write_callback(encoder->private_->verify.decoder, verify_write_callback_); - FLAC__stream_decoder_set_metadata_callback(encoder->private_->verify.decoder, verify_metadata_callback_); - FLAC__stream_decoder_set_error_callback(encoder->private_->verify.decoder, verify_error_callback_); - FLAC__stream_decoder_set_client_data(encoder->private_->verify.decoder, encoder); - if(FLAC__stream_decoder_init(encoder->private_->verify.decoder) != FLAC__STREAM_DECODER_SEARCH_FOR_METADATA) - return encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR; - } - encoder->private_->verify.error_stats.absolute_sample = 0; - encoder->private_->verify.error_stats.frame_number = 0; - encoder->private_->verify.error_stats.channel = 0; - encoder->private_->verify.error_stats.sample = 0; - encoder->private_->verify.error_stats.expected = 0; - encoder->private_->verify.error_stats.got = 0; - - /* - * write the stream header - */ - if(encoder->protected_->verify) - encoder->private_->verify.state_hint = ENCODER_IN_MAGIC; - if(!FLAC__bitbuffer_write_raw_uint32(encoder->private_->frame, FLAC__STREAM_SYNC, FLAC__STREAM_SYNC_LEN)) - return encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR; - if(!write_bitbuffer_(encoder, 0)) { - /* the above function sets the state for us in case of an error */ - return encoder->protected_->state; - } - - /* - * write the STREAMINFO metadata block - */ - if(encoder->protected_->verify) - encoder->private_->verify.state_hint = ENCODER_IN_METADATA; - encoder->private_->metadata.type = FLAC__METADATA_TYPE_STREAMINFO; - encoder->private_->metadata.is_last = false; /* we will have at a minimum a VORBIS_COMMENT afterwards */ - encoder->private_->metadata.length = FLAC__STREAM_METADATA_STREAMINFO_LENGTH; - encoder->private_->metadata.data.stream_info.min_blocksize = encoder->protected_->blocksize; /* this encoder uses the same blocksize for the whole stream */ - encoder->private_->metadata.data.stream_info.max_blocksize = encoder->protected_->blocksize; - encoder->private_->metadata.data.stream_info.min_framesize = 0; /* we don't know this yet; have to fill it in later */ - encoder->private_->metadata.data.stream_info.max_framesize = 0; /* we don't know this yet; have to fill it in later */ - encoder->private_->metadata.data.stream_info.sample_rate = encoder->protected_->sample_rate; - encoder->private_->metadata.data.stream_info.channels = encoder->protected_->channels; - encoder->private_->metadata.data.stream_info.bits_per_sample = encoder->protected_->bits_per_sample; - encoder->private_->metadata.data.stream_info.total_samples = encoder->protected_->total_samples_estimate; /* we will replace this later with the real total */ - memset(encoder->private_->metadata.data.stream_info.md5sum, 0, 16); /* we don't know this yet; have to fill it in later */ - FLAC__MD5Init(&encoder->private_->md5context); - if(!FLAC__bitbuffer_clear(encoder->private_->frame)) - return encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR; - if(!FLAC__add_metadata_block(&encoder->private_->metadata, encoder->private_->frame)) - return encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR; - if(!write_bitbuffer_(encoder, 0)) { - /* the above function sets the state for us in case of an error */ - return encoder->protected_->state; - } - - /* - * Now that the STREAMINFO block is written, we can init this to an - * absurdly-high value... - */ - encoder->private_->metadata.data.stream_info.min_framesize = (1u << FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN) - 1; - /* ... and clear this to 0 */ - encoder->private_->metadata.data.stream_info.total_samples = 0; - - /* - * Check to see if the supplied metadata contains a VORBIS_COMMENT; - * if not, we will write an empty one (FLAC__add_metadata_block() - * automatically supplies the vendor string). - * - * WATCHOUT: libOggFLAC depends on us to write this block after the - * STREAMINFO since that's what the mapping requires. (In the case - * that metadata_has_vorbis_comment is true it will have already - * insured that the metadata list is properly ordered.) - */ - if(!metadata_has_vorbis_comment) { - FLAC__StreamMetadata vorbis_comment; - vorbis_comment.type = FLAC__METADATA_TYPE_VORBIS_COMMENT; - vorbis_comment.is_last = (encoder->protected_->num_metadata_blocks == 0); - vorbis_comment.length = 4 + 4; /* MAGIC NUMBER */ - vorbis_comment.data.vorbis_comment.vendor_string.length = 0; - vorbis_comment.data.vorbis_comment.vendor_string.entry = 0; - vorbis_comment.data.vorbis_comment.num_comments = 0; - vorbis_comment.data.vorbis_comment.comments = 0; - if(!FLAC__bitbuffer_clear(encoder->private_->frame)) - return encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR; - if(!FLAC__add_metadata_block(&vorbis_comment, encoder->private_->frame)) - return encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR; - if(!write_bitbuffer_(encoder, 0)) { - /* the above function sets the state for us in case of an error */ - return encoder->protected_->state; - } - } - - /* - * write the user's metadata blocks - */ - for(i = 0; i < encoder->protected_->num_metadata_blocks; i++) { - encoder->protected_->metadata[i]->is_last = (i == encoder->protected_->num_metadata_blocks - 1); - if(!FLAC__bitbuffer_clear(encoder->private_->frame)) - return encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR; - if(!FLAC__add_metadata_block(encoder->protected_->metadata[i], encoder->private_->frame)) - return encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR; - if(!write_bitbuffer_(encoder, 0)) { - /* the above function sets the state for us in case of an error */ - return encoder->protected_->state; - } - } - - if(encoder->protected_->verify) - encoder->private_->verify.state_hint = ENCODER_IN_AUDIO; - - return encoder->protected_->state; -} - -FLAC_API void FLAC__stream_encoder_finish(FLAC__StreamEncoder *encoder) -{ - FLAC__ASSERT(0 != encoder); - - if(encoder->protected_->state == FLAC__STREAM_ENCODER_UNINITIALIZED) - return; - - if(encoder->protected_->state == FLAC__STREAM_ENCODER_OK && !encoder->private_->is_being_deleted) { - if(encoder->private_->current_sample_number != 0) { - encoder->protected_->blocksize = encoder->private_->current_sample_number; - process_frame_(encoder, true); /* true => is last frame */ - } - } - - FLAC__MD5Final(encoder->private_->metadata.data.stream_info.md5sum, &encoder->private_->md5context); - - if(encoder->protected_->state == FLAC__STREAM_ENCODER_OK && !encoder->private_->is_being_deleted) { - encoder->private_->metadata_callback(encoder, &encoder->private_->metadata, encoder->private_->client_data); - } - - if(encoder->protected_->verify && 0 != encoder->private_->verify.decoder) - FLAC__stream_decoder_finish(encoder->private_->verify.decoder); - - free_(encoder); - set_defaults_(encoder); - - encoder->protected_->state = FLAC__STREAM_ENCODER_UNINITIALIZED; -} - -FLAC_API FLAC__bool FLAC__stream_encoder_set_verify(FLAC__StreamEncoder *encoder, FLAC__bool value) -{ - FLAC__ASSERT(0 != encoder); - if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) - return false; -#ifndef FLAC__MANDATORY_VERIFY_WHILE_ENCODING - encoder->protected_->verify = value; -#endif - return true; -} - -FLAC_API FLAC__bool FLAC__stream_encoder_set_streamable_subset(FLAC__StreamEncoder *encoder, FLAC__bool value) -{ - FLAC__ASSERT(0 != encoder); - if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) - return false; - encoder->protected_->streamable_subset = value; - return true; -} - -FLAC_API FLAC__bool FLAC__stream_encoder_set_do_mid_side_stereo(FLAC__StreamEncoder *encoder, FLAC__bool value) -{ - FLAC__ASSERT(0 != encoder); - if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) - return false; - encoder->protected_->do_mid_side_stereo = value; - return true; -} - -FLAC_API FLAC__bool FLAC__stream_encoder_set_loose_mid_side_stereo(FLAC__StreamEncoder *encoder, FLAC__bool value) -{ - FLAC__ASSERT(0 != encoder); - if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) - return false; - encoder->protected_->loose_mid_side_stereo = value; - return true; -} - -FLAC_API FLAC__bool FLAC__stream_encoder_set_channels(FLAC__StreamEncoder *encoder, unsigned value) -{ - FLAC__ASSERT(0 != encoder); - if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) - return false; - encoder->protected_->channels = value; - return true; -} - -FLAC_API FLAC__bool FLAC__stream_encoder_set_bits_per_sample(FLAC__StreamEncoder *encoder, unsigned value) -{ - FLAC__ASSERT(0 != encoder); - if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) - return false; - encoder->protected_->bits_per_sample = value; - return true; -} - -FLAC_API FLAC__bool FLAC__stream_encoder_set_sample_rate(FLAC__StreamEncoder *encoder, unsigned value) -{ - FLAC__ASSERT(0 != encoder); - if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) - return false; - encoder->protected_->sample_rate = value; - return true; -} - -FLAC_API FLAC__bool FLAC__stream_encoder_set_blocksize(FLAC__StreamEncoder *encoder, unsigned value) -{ - FLAC__ASSERT(0 != encoder); - if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) - return false; - encoder->protected_->blocksize = value; - return true; -} - -FLAC_API FLAC__bool FLAC__stream_encoder_set_max_lpc_order(FLAC__StreamEncoder *encoder, unsigned value) -{ - FLAC__ASSERT(0 != encoder); - if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) - return false; - encoder->protected_->max_lpc_order = value; - return true; -} - -FLAC_API FLAC__bool FLAC__stream_encoder_set_qlp_coeff_precision(FLAC__StreamEncoder *encoder, unsigned value) -{ - FLAC__ASSERT(0 != encoder); - if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) - return false; - encoder->protected_->qlp_coeff_precision = value; - return true; -} - -FLAC_API FLAC__bool FLAC__stream_encoder_set_do_qlp_coeff_prec_search(FLAC__StreamEncoder *encoder, FLAC__bool value) -{ - FLAC__ASSERT(0 != encoder); - if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) - return false; - encoder->protected_->do_qlp_coeff_prec_search = value; - return true; -} - -FLAC_API FLAC__bool FLAC__stream_encoder_set_do_escape_coding(FLAC__StreamEncoder *encoder, FLAC__bool value) -{ - FLAC__ASSERT(0 != encoder); - if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) - return false; -#if 0 - /*@@@ deprecated: */ - encoder->protected_->do_escape_coding = value; -#else - (void)value; -#endif - return true; -} - -FLAC_API FLAC__bool FLAC__stream_encoder_set_do_exhaustive_model_search(FLAC__StreamEncoder *encoder, FLAC__bool value) -{ - FLAC__ASSERT(0 != encoder); - if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) - return false; - encoder->protected_->do_exhaustive_model_search = value; - return true; -} - -FLAC_API FLAC__bool FLAC__stream_encoder_set_min_residual_partition_order(FLAC__StreamEncoder *encoder, unsigned value) -{ - FLAC__ASSERT(0 != encoder); - if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) - return false; - encoder->protected_->min_residual_partition_order = value; - return true; -} - -FLAC_API FLAC__bool FLAC__stream_encoder_set_max_residual_partition_order(FLAC__StreamEncoder *encoder, unsigned value) -{ - FLAC__ASSERT(0 != encoder); - if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) - return false; - encoder->protected_->max_residual_partition_order = value; - return true; -} - -FLAC_API FLAC__bool FLAC__stream_encoder_set_rice_parameter_search_dist(FLAC__StreamEncoder *encoder, unsigned value) -{ - FLAC__ASSERT(0 != encoder); - if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) - return false; -#if 0 - /*@@@ deprecated: */ - encoder->protected_->rice_parameter_search_dist = value; -#else - (void)value; -#endif - return true; -} - -FLAC_API FLAC__bool FLAC__stream_encoder_set_total_samples_estimate(FLAC__StreamEncoder *encoder, FLAC__uint64 value) -{ - FLAC__ASSERT(0 != encoder); - if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) - return false; - encoder->protected_->total_samples_estimate = value; - return true; -} - -FLAC_API FLAC__bool FLAC__stream_encoder_set_metadata(FLAC__StreamEncoder *encoder, FLAC__StreamMetadata **metadata, unsigned num_blocks) -{ - FLAC__ASSERT(0 != encoder); - if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) - return false; - encoder->protected_->metadata = metadata; - encoder->protected_->num_metadata_blocks = num_blocks; - return true; -} - -FLAC_API FLAC__bool FLAC__stream_encoder_set_write_callback(FLAC__StreamEncoder *encoder, FLAC__StreamEncoderWriteCallback value) -{ - FLAC__ASSERT(0 != encoder); - FLAC__ASSERT(0 != value); - if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) - return false; - encoder->private_->write_callback = value; - return true; -} - -FLAC_API FLAC__bool FLAC__stream_encoder_set_metadata_callback(FLAC__StreamEncoder *encoder, FLAC__StreamEncoderMetadataCallback value) -{ - FLAC__ASSERT(0 != encoder); - FLAC__ASSERT(0 != value); - if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) - return false; - encoder->private_->metadata_callback = value; - return true; -} - -FLAC_API FLAC__bool FLAC__stream_encoder_set_client_data(FLAC__StreamEncoder *encoder, void *value) -{ - FLAC__ASSERT(0 != encoder); - if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) - return false; - encoder->private_->client_data = value; - return true; -} - -/* - * These three functions are not static, but not publically exposed in - * include/FLAC/ either. They are used by the test suite. - */ -FLAC_API FLAC__bool FLAC__stream_encoder_disable_constant_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value) -{ - FLAC__ASSERT(0 != encoder); - if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) - return false; - encoder->private_->disable_constant_subframes = value; - return true; -} - -FLAC_API FLAC__bool FLAC__stream_encoder_disable_fixed_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value) -{ - FLAC__ASSERT(0 != encoder); - if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) - return false; - encoder->private_->disable_fixed_subframes = value; - return true; -} - -FLAC_API FLAC__bool FLAC__stream_encoder_disable_verbatim_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value) -{ - FLAC__ASSERT(0 != encoder); - if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) - return false; - encoder->private_->disable_verbatim_subframes = value; - return true; -} - -FLAC_API FLAC__StreamEncoderState FLAC__stream_encoder_get_state(const FLAC__StreamEncoder *encoder) -{ - FLAC__ASSERT(0 != encoder); - return encoder->protected_->state; -} - -FLAC_API FLAC__StreamDecoderState FLAC__stream_encoder_get_verify_decoder_state(const FLAC__StreamEncoder *encoder) -{ - FLAC__ASSERT(0 != encoder); - if(encoder->protected_->verify) - return FLAC__stream_decoder_get_state(encoder->private_->verify.decoder); - else - return FLAC__STREAM_DECODER_UNINITIALIZED; -} - -FLAC_API const char *FLAC__stream_encoder_get_resolved_state_string(const FLAC__StreamEncoder *encoder) -{ - if(encoder->protected_->state != FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR) - return FLAC__StreamEncoderStateString[encoder->protected_->state]; - else - return FLAC__stream_decoder_get_resolved_state_string(encoder->private_->verify.decoder); -} - -FLAC_API void FLAC__stream_encoder_get_verify_decoder_error_stats(const FLAC__StreamEncoder *encoder, FLAC__uint64 *absolute_sample, unsigned *frame_number, unsigned *channel, unsigned *sample, FLAC__int32 *expected, FLAC__int32 *got) -{ - FLAC__ASSERT(0 != encoder); - if(0 != absolute_sample) - *absolute_sample = encoder->private_->verify.error_stats.absolute_sample; - if(0 != frame_number) - *frame_number = encoder->private_->verify.error_stats.frame_number; - if(0 != channel) - *channel = encoder->private_->verify.error_stats.channel; - if(0 != sample) - *sample = encoder->private_->verify.error_stats.sample; - if(0 != expected) - *expected = encoder->private_->verify.error_stats.expected; - if(0 != got) - *got = encoder->private_->verify.error_stats.got; -} - -FLAC_API FLAC__bool FLAC__stream_encoder_get_verify(const FLAC__StreamEncoder *encoder) -{ - FLAC__ASSERT(0 != encoder); - return encoder->protected_->verify; -} - -FLAC_API FLAC__bool FLAC__stream_encoder_get_streamable_subset(const FLAC__StreamEncoder *encoder) -{ - FLAC__ASSERT(0 != encoder); - return encoder->protected_->streamable_subset; -} - -FLAC_API FLAC__bool FLAC__stream_encoder_get_do_mid_side_stereo(const FLAC__StreamEncoder *encoder) -{ - FLAC__ASSERT(0 != encoder); - return encoder->protected_->do_mid_side_stereo; -} - -FLAC_API FLAC__bool FLAC__stream_encoder_get_loose_mid_side_stereo(const FLAC__StreamEncoder *encoder) -{ - FLAC__ASSERT(0 != encoder); - return encoder->protected_->loose_mid_side_stereo; -} - -FLAC_API unsigned FLAC__stream_encoder_get_channels(const FLAC__StreamEncoder *encoder) -{ - FLAC__ASSERT(0 != encoder); - return encoder->protected_->channels; -} - -FLAC_API unsigned FLAC__stream_encoder_get_bits_per_sample(const FLAC__StreamEncoder *encoder) -{ - FLAC__ASSERT(0 != encoder); - return encoder->protected_->bits_per_sample; -} - -FLAC_API unsigned FLAC__stream_encoder_get_sample_rate(const FLAC__StreamEncoder *encoder) -{ - FLAC__ASSERT(0 != encoder); - return encoder->protected_->sample_rate; -} - -FLAC_API unsigned FLAC__stream_encoder_get_blocksize(const FLAC__StreamEncoder *encoder) -{ - FLAC__ASSERT(0 != encoder); - return encoder->protected_->blocksize; -} - -FLAC_API unsigned FLAC__stream_encoder_get_max_lpc_order(const FLAC__StreamEncoder *encoder) -{ - FLAC__ASSERT(0 != encoder); - return encoder->protected_->max_lpc_order; -} - -FLAC_API unsigned FLAC__stream_encoder_get_qlp_coeff_precision(const FLAC__StreamEncoder *encoder) -{ - FLAC__ASSERT(0 != encoder); - return encoder->protected_->qlp_coeff_precision; -} - -FLAC_API FLAC__bool FLAC__stream_encoder_get_do_qlp_coeff_prec_search(const FLAC__StreamEncoder *encoder) -{ - FLAC__ASSERT(0 != encoder); - return encoder->protected_->do_qlp_coeff_prec_search; -} - -FLAC_API FLAC__bool FLAC__stream_encoder_get_do_escape_coding(const FLAC__StreamEncoder *encoder) -{ - FLAC__ASSERT(0 != encoder); - return encoder->protected_->do_escape_coding; -} - -FLAC_API FLAC__bool FLAC__stream_encoder_get_do_exhaustive_model_search(const FLAC__StreamEncoder *encoder) -{ - FLAC__ASSERT(0 != encoder); - return encoder->protected_->do_exhaustive_model_search; -} - -FLAC_API unsigned FLAC__stream_encoder_get_min_residual_partition_order(const FLAC__StreamEncoder *encoder) -{ - FLAC__ASSERT(0 != encoder); - return encoder->protected_->min_residual_partition_order; -} - -FLAC_API unsigned FLAC__stream_encoder_get_max_residual_partition_order(const FLAC__StreamEncoder *encoder) -{ - FLAC__ASSERT(0 != encoder); - return encoder->protected_->max_residual_partition_order; -} - -FLAC_API unsigned FLAC__stream_encoder_get_rice_parameter_search_dist(const FLAC__StreamEncoder *encoder) -{ - FLAC__ASSERT(0 != encoder); - return encoder->protected_->rice_parameter_search_dist; -} - -FLAC_API FLAC__uint64 FLAC__stream_encoder_get_total_samples_estimate(const FLAC__StreamEncoder *encoder) -{ - FLAC__ASSERT(0 != encoder); - return encoder->protected_->total_samples_estimate; -} - -FLAC_API FLAC__bool FLAC__stream_encoder_process(FLAC__StreamEncoder *encoder, const FLAC__int32 * const buffer[], unsigned samples) -{ - unsigned i, j, channel; - FLAC__int32 x, mid, side; - const unsigned channels = encoder->protected_->channels, blocksize = encoder->protected_->blocksize; - - FLAC__ASSERT(0 != encoder); - FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK); - - j = 0; - /* - * we have several flavors of the same basic loop, optimized for - * different conditions: - */ - if(encoder->protected_->max_lpc_order > 0) { - if(encoder->protected_->do_mid_side_stereo && channels == 2) { - /* - * stereo coding: unroll channel loop - * with LPC: calculate floating point version of signal - */ - do { - if(encoder->protected_->verify) - append_to_verify_fifo_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize-encoder->private_->current_sample_number, samples-j)); - - for(i = encoder->private_->current_sample_number; i < blocksize && j < samples; i++, j++) { - x = mid = side = buffer[0][j]; - encoder->private_->integer_signal[0][i] = x; -#ifndef FLAC__INTEGER_ONLY_LIBRARY - encoder->private_->real_signal[0][i] = (FLAC__real)x; -#endif - x = buffer[1][j]; - encoder->private_->integer_signal[1][i] = x; -#ifndef FLAC__INTEGER_ONLY_LIBRARY - encoder->private_->real_signal[1][i] = (FLAC__real)x; -#endif - mid += x; - side -= x; - mid >>= 1; /* NOTE: not the same as 'mid = (buffer[0][j] + buffer[1][j]) / 2' ! */ - encoder->private_->integer_signal_mid_side[1][i] = side; - encoder->private_->integer_signal_mid_side[0][i] = mid; -#ifndef FLAC__INTEGER_ONLY_LIBRARY - encoder->private_->real_signal_mid_side[1][i] = (FLAC__real)side; - encoder->private_->real_signal_mid_side[0][i] = (FLAC__real)mid; -#endif - encoder->private_->current_sample_number++; - } - if(i == blocksize) { - if(!process_frame_(encoder, false)) /* false => not last frame */ - return false; - } - } while(j < samples); - } - else { - /* - * independent channel coding: buffer each channel in inner loop - * with LPC: calculate floating point version of signal - */ - do { - if(encoder->protected_->verify) - append_to_verify_fifo_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize-encoder->private_->current_sample_number, samples-j)); - - for(i = encoder->private_->current_sample_number; i < blocksize && j < samples; i++, j++) { - for(channel = 0; channel < channels; channel++) { - x = buffer[channel][j]; - encoder->private_->integer_signal[channel][i] = x; -#ifndef FLAC__INTEGER_ONLY_LIBRARY - encoder->private_->real_signal[channel][i] = (FLAC__real)x; -#endif - } - encoder->private_->current_sample_number++; - } - if(i == blocksize) { - if(!process_frame_(encoder, false)) /* false => not last frame */ - return false; - } - } while(j < samples); - } - } - else { - if(encoder->protected_->do_mid_side_stereo && channels == 2) { - /* - * stereo coding: unroll channel loop - * without LPC: no need to calculate floating point version of signal - */ - do { - if(encoder->protected_->verify) - append_to_verify_fifo_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize-encoder->private_->current_sample_number, samples-j)); - - for(i = encoder->private_->current_sample_number; i < blocksize && j < samples; i++, j++) { - encoder->private_->integer_signal[0][i] = mid = side = buffer[0][j]; - x = buffer[1][j]; - encoder->private_->integer_signal[1][i] = x; - mid += x; - side -= x; - mid >>= 1; /* NOTE: not the same as 'mid = (buffer[0][j] + buffer[1][j]) / 2' ! */ - encoder->private_->integer_signal_mid_side[1][i] = side; - encoder->private_->integer_signal_mid_side[0][i] = mid; - encoder->private_->current_sample_number++; - } - if(i == blocksize) { - if(!process_frame_(encoder, false)) /* false => not last frame */ - return false; - } - } while(j < samples); - } - else { - /* - * independent channel coding: buffer each channel in inner loop - * without LPC: no need to calculate floating point version of signal - */ - do { - if(encoder->protected_->verify) - append_to_verify_fifo_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize-encoder->private_->current_sample_number, samples-j)); - - for(i = encoder->private_->current_sample_number; i < blocksize && j < samples; i++, j++) { - for(channel = 0; channel < channels; channel++) - encoder->private_->integer_signal[channel][i] = buffer[channel][j]; - encoder->private_->current_sample_number++; - } - if(i == blocksize) { - if(!process_frame_(encoder, false)) /* false => not last frame */ - return false; - } - } while(j < samples); - } - } - - return true; -} - -FLAC_API FLAC__bool FLAC__stream_encoder_process_interleaved(FLAC__StreamEncoder *encoder, const FLAC__int32 buffer[], unsigned samples) -{ - unsigned i, j, k, channel; - FLAC__int32 x, mid, side; - const unsigned channels = encoder->protected_->channels, blocksize = encoder->protected_->blocksize; - - FLAC__ASSERT(0 != encoder); - FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK); - - j = k = 0; - /* - * we have several flavors of the same basic loop, optimized for - * different conditions: - */ - if(encoder->protected_->max_lpc_order > 0) { - if(encoder->protected_->do_mid_side_stereo && channels == 2) { - /* - * stereo coding: unroll channel loop - * with LPC: calculate floating point version of signal - */ - do { - if(encoder->protected_->verify) - append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize-encoder->private_->current_sample_number, samples-j)); - - for(i = encoder->private_->current_sample_number; i < blocksize && j < samples; i++, j++) { - x = mid = side = buffer[k++]; - encoder->private_->integer_signal[0][i] = x; -#ifndef FLAC__INTEGER_ONLY_LIBRARY - encoder->private_->real_signal[0][i] = (FLAC__real)x; -#endif - x = buffer[k++]; - encoder->private_->integer_signal[1][i] = x; -#ifndef FLAC__INTEGER_ONLY_LIBRARY - encoder->private_->real_signal[1][i] = (FLAC__real)x; -#endif - mid += x; - side -= x; - mid >>= 1; /* NOTE: not the same as 'mid = (left + right) / 2' ! */ - encoder->private_->integer_signal_mid_side[1][i] = side; - encoder->private_->integer_signal_mid_side[0][i] = mid; -#ifndef FLAC__INTEGER_ONLY_LIBRARY - encoder->private_->real_signal_mid_side[1][i] = (FLAC__real)side; - encoder->private_->real_signal_mid_side[0][i] = (FLAC__real)mid; -#endif - encoder->private_->current_sample_number++; - } - if(i == blocksize) { - if(!process_frame_(encoder, false)) /* false => not last frame */ - return false; - } - } while(j < samples); - } - else { - /* - * independent channel coding: buffer each channel in inner loop - * with LPC: calculate floating point version of signal - */ - do { - if(encoder->protected_->verify) - append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize-encoder->private_->current_sample_number, samples-j)); - - for(i = encoder->private_->current_sample_number; i < blocksize && j < samples; i++, j++) { - for(channel = 0; channel < channels; channel++) { - x = buffer[k++]; - encoder->private_->integer_signal[channel][i] = x; -#ifndef FLAC__INTEGER_ONLY_LIBRARY - encoder->private_->real_signal[channel][i] = (FLAC__real)x; -#endif - } - encoder->private_->current_sample_number++; - } - if(i == blocksize) { - if(!process_frame_(encoder, false)) /* false => not last frame */ - return false; - } - } while(j < samples); - } - } - else { - if(encoder->protected_->do_mid_side_stereo && channels == 2) { - /* - * stereo coding: unroll channel loop - * without LPC: no need to calculate floating point version of signal - */ - do { - if(encoder->protected_->verify) - append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize-encoder->private_->current_sample_number, samples-j)); - - for(i = encoder->private_->current_sample_number; i < blocksize && j < samples; i++, j++) { - encoder->private_->integer_signal[0][i] = mid = side = buffer[k++]; - x = buffer[k++]; - encoder->private_->integer_signal[1][i] = x; - mid += x; - side -= x; - mid >>= 1; /* NOTE: not the same as 'mid = (left + right) / 2' ! */ - encoder->private_->integer_signal_mid_side[1][i] = side; - encoder->private_->integer_signal_mid_side[0][i] = mid; - encoder->private_->current_sample_number++; - } - if(i == blocksize) { - if(!process_frame_(encoder, false)) /* false => not last frame */ - return false; - } - } while(j < samples); - } - else { - /* - * independent channel coding: buffer each channel in inner loop - * without LPC: no need to calculate floating point version of signal - */ - do { - if(encoder->protected_->verify) - append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, min(blocksize-encoder->private_->current_sample_number, samples-j)); - - for(i = encoder->private_->current_sample_number; i < blocksize && j < samples; i++, j++) { - for(channel = 0; channel < channels; channel++) - encoder->private_->integer_signal[channel][i] = buffer[k++]; - encoder->private_->current_sample_number++; - } - if(i == blocksize) { - if(!process_frame_(encoder, false)) /* false => not last frame */ - return false; - } - } while(j < samples); - } - } - - return true; -} - -/*********************************************************************** - * - * Private class methods - * - ***********************************************************************/ - -void set_defaults_(FLAC__StreamEncoder *encoder) -{ - FLAC__ASSERT(0 != encoder); - -#ifdef FLAC__MANDATORY_VERIFY_WHILE_ENCODING - encoder->protected_->verify = true; -#else - encoder->protected_->verify = false; -#endif - encoder->protected_->streamable_subset = true; - encoder->protected_->do_mid_side_stereo = false; - encoder->protected_->loose_mid_side_stereo = false; - encoder->protected_->channels = 2; - encoder->protected_->bits_per_sample = 16; - encoder->protected_->sample_rate = 44100; - encoder->protected_->blocksize = 1152; - encoder->protected_->max_lpc_order = 0; - encoder->protected_->qlp_coeff_precision = 0; - encoder->protected_->do_qlp_coeff_prec_search = false; - encoder->protected_->do_exhaustive_model_search = false; - encoder->protected_->do_escape_coding = false; - encoder->protected_->min_residual_partition_order = 0; - encoder->protected_->max_residual_partition_order = 0; - encoder->protected_->rice_parameter_search_dist = 0; - encoder->protected_->total_samples_estimate = 0; - encoder->protected_->metadata = 0; - encoder->protected_->num_metadata_blocks = 0; - - encoder->private_->disable_constant_subframes = false; - encoder->private_->disable_fixed_subframes = false; - encoder->private_->disable_verbatim_subframes = false; - encoder->private_->write_callback = 0; - encoder->private_->metadata_callback = 0; - encoder->private_->client_data = 0; -} - -void free_(FLAC__StreamEncoder *encoder) -{ - unsigned i, channel; - - FLAC__ASSERT(0 != encoder); - for(i = 0; i < encoder->protected_->channels; i++) { - if(0 != encoder->private_->integer_signal_unaligned[i]) { - free(encoder->private_->integer_signal_unaligned[i]); - encoder->private_->integer_signal_unaligned[i] = 0; - } -#ifndef FLAC__INTEGER_ONLY_LIBRARY - if(0 != encoder->private_->real_signal_unaligned[i]) { - free(encoder->private_->real_signal_unaligned[i]); - encoder->private_->real_signal_unaligned[i] = 0; - } -#endif - } - for(i = 0; i < 2; i++) { - if(0 != encoder->private_->integer_signal_mid_side_unaligned[i]) { - free(encoder->private_->integer_signal_mid_side_unaligned[i]); - encoder->private_->integer_signal_mid_side_unaligned[i] = 0; - } -#ifndef FLAC__INTEGER_ONLY_LIBRARY - if(0 != encoder->private_->real_signal_mid_side_unaligned[i]) { - free(encoder->private_->real_signal_mid_side_unaligned[i]); - encoder->private_->real_signal_mid_side_unaligned[i] = 0; - } -#endif - } - for(channel = 0; channel < encoder->protected_->channels; channel++) { - for(i = 0; i < 2; i++) { - if(0 != encoder->private_->residual_workspace_unaligned[channel][i]) { - free(encoder->private_->residual_workspace_unaligned[channel][i]); - encoder->private_->residual_workspace_unaligned[channel][i] = 0; - } - } - } - for(channel = 0; channel < 2; channel++) { - for(i = 0; i < 2; i++) { - if(0 != encoder->private_->residual_workspace_mid_side_unaligned[channel][i]) { - free(encoder->private_->residual_workspace_mid_side_unaligned[channel][i]); - encoder->private_->residual_workspace_mid_side_unaligned[channel][i] = 0; - } - } - } - if(0 != encoder->private_->abs_residual_unaligned) { - free(encoder->private_->abs_residual_unaligned); - encoder->private_->abs_residual_unaligned = 0; - } - if(0 != encoder->private_->abs_residual_partition_sums_unaligned) { - free(encoder->private_->abs_residual_partition_sums_unaligned); - encoder->private_->abs_residual_partition_sums_unaligned = 0; - } - if(0 != encoder->private_->raw_bits_per_partition_unaligned) { - free(encoder->private_->raw_bits_per_partition_unaligned); - encoder->private_->raw_bits_per_partition_unaligned = 0; - } - if(encoder->protected_->verify) { - for(i = 0; i < encoder->protected_->channels; i++) { - if(0 != encoder->private_->verify.input_fifo.data[i]) { - free(encoder->private_->verify.input_fifo.data[i]); - encoder->private_->verify.input_fifo.data[i] = 0; - } - } - } - FLAC__bitbuffer_free(encoder->private_->frame); -} - -FLAC__bool resize_buffers_(FLAC__StreamEncoder *encoder, unsigned new_size) -{ - FLAC__bool ok; - unsigned i, channel; - - FLAC__ASSERT(new_size > 0); - FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK); - FLAC__ASSERT(encoder->private_->current_sample_number == 0); - - /* To avoid excessive malloc'ing, we only grow the buffer; no shrinking. */ - if(new_size <= encoder->private_->input_capacity) - return true; - - ok = true; - - /* WATCHOUT: FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32_mmx() - * requires that the input arrays (in our case the integer signals) - * have a buffer of up to 3 zeroes in front (at negative indices) for - * alignment purposes; we use 4 to keep the data well-aligned. - */ - - for(i = 0; ok && i < encoder->protected_->channels; i++) { - ok = ok && FLAC__memory_alloc_aligned_int32_array(new_size+4, &encoder->private_->integer_signal_unaligned[i], &encoder->private_->integer_signal[i]); -#ifndef FLAC__INTEGER_ONLY_LIBRARY - if(encoder->protected_->max_lpc_order > 0) - ok = ok && FLAC__memory_alloc_aligned_real_array(new_size, &encoder->private_->real_signal_unaligned[i], &encoder->private_->real_signal[i]); -#endif - memset(encoder->private_->integer_signal[i], 0, sizeof(FLAC__int32)*4); - encoder->private_->integer_signal[i] += 4; - } - for(i = 0; ok && i < 2; i++) { - ok = ok && FLAC__memory_alloc_aligned_int32_array(new_size+4, &encoder->private_->integer_signal_mid_side_unaligned[i], &encoder->private_->integer_signal_mid_side[i]); -#ifndef FLAC__INTEGER_ONLY_LIBRARY - if(encoder->protected_->max_lpc_order > 0) - ok = ok && FLAC__memory_alloc_aligned_real_array(new_size, &encoder->private_->real_signal_mid_side_unaligned[i], &encoder->private_->real_signal_mid_side[i]); -#endif - memset(encoder->private_->integer_signal_mid_side[i], 0, sizeof(FLAC__int32)*4); - encoder->private_->integer_signal_mid_side[i] += 4; - } - for(channel = 0; ok && channel < encoder->protected_->channels; channel++) { - for(i = 0; ok && i < 2; i++) { - ok = ok && FLAC__memory_alloc_aligned_int32_array(new_size, &encoder->private_->residual_workspace_unaligned[channel][i], &encoder->private_->residual_workspace[channel][i]); - } - } - for(channel = 0; ok && channel < 2; channel++) { - for(i = 0; ok && i < 2; i++) { - ok = ok && FLAC__memory_alloc_aligned_int32_array(new_size, &encoder->private_->residual_workspace_mid_side_unaligned[channel][i], &encoder->private_->residual_workspace_mid_side[channel][i]); - } - } - ok = ok && FLAC__memory_alloc_aligned_uint32_array(new_size, &encoder->private_->abs_residual_unaligned, &encoder->private_->abs_residual); - if(encoder->private_->precompute_partition_sums || encoder->protected_->do_escape_coding) /* we require precompute_partition_sums if do_escape_coding because of their intertwined nature */ - ok = ok && FLAC__memory_alloc_aligned_uint64_array(new_size * 2, &encoder->private_->abs_residual_partition_sums_unaligned, &encoder->private_->abs_residual_partition_sums); - if(encoder->protected_->do_escape_coding) - ok = ok && FLAC__memory_alloc_aligned_unsigned_array(new_size * 2, &encoder->private_->raw_bits_per_partition_unaligned, &encoder->private_->raw_bits_per_partition); - - if(ok) - encoder->private_->input_capacity = new_size; - else - encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR; - - return ok; -} - -FLAC__bool write_bitbuffer_(FLAC__StreamEncoder *encoder, unsigned samples) -{ - const FLAC__byte *buffer; - unsigned bytes; - - FLAC__ASSERT(FLAC__bitbuffer_is_byte_aligned(encoder->private_->frame)); - - FLAC__bitbuffer_get_buffer(encoder->private_->frame, &buffer, &bytes); - - if(encoder->protected_->verify) { - encoder->private_->verify.output.data = buffer; - encoder->private_->verify.output.bytes = bytes; - if(encoder->private_->verify.state_hint == ENCODER_IN_MAGIC) { - encoder->private_->verify.needs_magic_hack = true; - } - else { - if(!FLAC__stream_decoder_process_single(encoder->private_->verify.decoder)) { - FLAC__bitbuffer_release_buffer(encoder->private_->frame); - if(encoder->protected_->state != FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA) - encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR; - return false; - } - } - } - - if(encoder->private_->write_callback(encoder, buffer, bytes, samples, encoder->private_->current_frame_number, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) { - FLAC__bitbuffer_release_buffer(encoder->private_->frame); - encoder->protected_->state = FLAC__STREAM_ENCODER_FATAL_ERROR_WHILE_WRITING; - return false; - } - - FLAC__bitbuffer_release_buffer(encoder->private_->frame); - - if(samples > 0) { - encoder->private_->metadata.data.stream_info.min_framesize = min(bytes, encoder->private_->metadata.data.stream_info.min_framesize); - encoder->private_->metadata.data.stream_info.max_framesize = max(bytes, encoder->private_->metadata.data.stream_info.max_framesize); - } - - return true; -} - -FLAC__bool process_frame_(FLAC__StreamEncoder *encoder, FLAC__bool is_last_frame) -{ - FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK); - - /* - * Accumulate raw signal to the MD5 signature - */ - if(!FLAC__MD5Accumulate(&encoder->private_->md5context, (const FLAC__int32 * const *)encoder->private_->integer_signal, encoder->protected_->channels, encoder->protected_->blocksize, (encoder->protected_->bits_per_sample+7) / 8)) { - encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR; - return false; - } - - /* - * Process the frame header and subframes into the frame bitbuffer - */ - if(!process_subframes_(encoder, is_last_frame)) { - /* the above function sets the state for us in case of an error */ - return false; - } - - /* - * Zero-pad the frame to a byte_boundary - */ - if(!FLAC__bitbuffer_zero_pad_to_byte_boundary(encoder->private_->frame)) { - encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR; - return false; - } - - /* - * CRC-16 the whole thing - */ - FLAC__ASSERT(FLAC__bitbuffer_is_byte_aligned(encoder->private_->frame)); - FLAC__bitbuffer_write_raw_uint32(encoder->private_->frame, FLAC__bitbuffer_get_write_crc16(encoder->private_->frame), FLAC__FRAME_FOOTER_CRC_LEN); - - /* - * Write it - */ - if(!write_bitbuffer_(encoder, encoder->protected_->blocksize)) { - /* the above function sets the state for us in case of an error */ - return false; - } - - /* - * Get ready for the next frame - */ - encoder->private_->current_sample_number = 0; - encoder->private_->current_frame_number++; - encoder->private_->metadata.data.stream_info.total_samples += (FLAC__uint64)encoder->protected_->blocksize; - - return true; -} - -FLAC__bool process_subframes_(FLAC__StreamEncoder *encoder, FLAC__bool is_last_frame) -{ - FLAC__FrameHeader frame_header; - unsigned channel, min_partition_order = encoder->protected_->min_residual_partition_order, max_partition_order; - FLAC__bool do_independent, do_mid_side, precompute_partition_sums; - - /* - * Calculate the min,max Rice partition orders - */ - if(is_last_frame) { - max_partition_order = 0; - } - else { - max_partition_order = FLAC__format_get_max_rice_partition_order_from_blocksize(encoder->protected_->blocksize); - max_partition_order = min(max_partition_order, encoder->protected_->max_residual_partition_order); - } - min_partition_order = min(min_partition_order, max_partition_order); - - precompute_partition_sums = encoder->private_->precompute_partition_sums && ((max_partition_order > min_partition_order) || encoder->protected_->do_escape_coding); - - /* - * Setup the frame - */ - if(!FLAC__bitbuffer_clear(encoder->private_->frame)) { - encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR; - return false; - } - frame_header.blocksize = encoder->protected_->blocksize; - frame_header.sample_rate = encoder->protected_->sample_rate; - frame_header.channels = encoder->protected_->channels; - frame_header.channel_assignment = FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT; /* the default unless the encoder determines otherwise */ - frame_header.bits_per_sample = encoder->protected_->bits_per_sample; - frame_header.number_type = FLAC__FRAME_NUMBER_TYPE_FRAME_NUMBER; - frame_header.number.frame_number = encoder->private_->current_frame_number; - - /* - * Figure out what channel assignments to try - */ - if(encoder->protected_->do_mid_side_stereo) { - if(encoder->protected_->loose_mid_side_stereo) { - if(encoder->private_->loose_mid_side_stereo_frame_count == 0) { - do_independent = true; - do_mid_side = true; - } - else { - do_independent = (encoder->private_->last_channel_assignment == FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT); - do_mid_side = !do_independent; - } - } - else { - do_independent = true; - do_mid_side = true; - } - } - else { - do_independent = true; - do_mid_side = false; - } - - FLAC__ASSERT(do_independent || do_mid_side); - - /* - * Check for wasted bits; set effective bps for each subframe - */ - if(do_independent) { - for(channel = 0; channel < encoder->protected_->channels; channel++) { - const unsigned w = get_wasted_bits_(encoder->private_->integer_signal[channel], encoder->protected_->blocksize); - encoder->private_->subframe_workspace[channel][0].wasted_bits = encoder->private_->subframe_workspace[channel][1].wasted_bits = w; - encoder->private_->subframe_bps[channel] = encoder->protected_->bits_per_sample - w; - } - } - if(do_mid_side) { - FLAC__ASSERT(encoder->protected_->channels == 2); - for(channel = 0; channel < 2; channel++) { - const unsigned w = get_wasted_bits_(encoder->private_->integer_signal_mid_side[channel], encoder->protected_->blocksize); - encoder->private_->subframe_workspace_mid_side[channel][0].wasted_bits = encoder->private_->subframe_workspace_mid_side[channel][1].wasted_bits = w; - encoder->private_->subframe_bps_mid_side[channel] = encoder->protected_->bits_per_sample - w + (channel==0? 0:1); - } - } - - /* - * First do a normal encoding pass of each independent channel - */ - if(do_independent) { - for(channel = 0; channel < encoder->protected_->channels; channel++) { - if(! - process_subframe_( - encoder, - min_partition_order, - max_partition_order, - precompute_partition_sums, - &frame_header, - encoder->private_->subframe_bps[channel], - encoder->private_->integer_signal[channel], -#ifndef FLAC__INTEGER_ONLY_LIBRARY - encoder->private_->real_signal[channel], -#endif - encoder->private_->subframe_workspace_ptr[channel], - encoder->private_->partitioned_rice_contents_workspace_ptr[channel], - encoder->private_->residual_workspace[channel], - encoder->private_->best_subframe+channel, - encoder->private_->best_subframe_bits+channel - ) - ) - return false; - } - } - - /* - * Now do mid and side channels if requested - */ - if(do_mid_side) { - FLAC__ASSERT(encoder->protected_->channels == 2); - - for(channel = 0; channel < 2; channel++) { - if(! - process_subframe_( - encoder, - min_partition_order, - max_partition_order, - precompute_partition_sums, - &frame_header, - encoder->private_->subframe_bps_mid_side[channel], - encoder->private_->integer_signal_mid_side[channel], -#ifndef FLAC__INTEGER_ONLY_LIBRARY - encoder->private_->real_signal_mid_side[channel], -#endif - encoder->private_->subframe_workspace_ptr_mid_side[channel], - encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[channel], - encoder->private_->residual_workspace_mid_side[channel], - encoder->private_->best_subframe_mid_side+channel, - encoder->private_->best_subframe_bits_mid_side+channel - ) - ) - return false; - } - } - - /* - * Compose the frame bitbuffer - */ - if(do_mid_side) { - unsigned left_bps = 0, right_bps = 0; /* initialized only to prevent superfluous compiler warning */ - FLAC__Subframe *left_subframe = 0, *right_subframe = 0; /* initialized only to prevent superfluous compiler warning */ - FLAC__ChannelAssignment channel_assignment; - - FLAC__ASSERT(encoder->protected_->channels == 2); - - if(encoder->protected_->loose_mid_side_stereo && encoder->private_->loose_mid_side_stereo_frame_count > 0) { - channel_assignment = (encoder->private_->last_channel_assignment == FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT? FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT : FLAC__CHANNEL_ASSIGNMENT_MID_SIDE); - } - else { - unsigned bits[4]; /* WATCHOUT - indexed by FLAC__ChannelAssignment */ - unsigned min_bits; - FLAC__ChannelAssignment ca; - - FLAC__ASSERT(do_independent && do_mid_side); - - /* We have to figure out which channel assignent results in the smallest frame */ - bits[FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT] = encoder->private_->best_subframe_bits [0] + encoder->private_->best_subframe_bits [1]; - bits[FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE ] = encoder->private_->best_subframe_bits [0] + encoder->private_->best_subframe_bits_mid_side[1]; - bits[FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE ] = encoder->private_->best_subframe_bits [1] + encoder->private_->best_subframe_bits_mid_side[1]; - bits[FLAC__CHANNEL_ASSIGNMENT_MID_SIDE ] = encoder->private_->best_subframe_bits_mid_side[0] + encoder->private_->best_subframe_bits_mid_side[1]; - - for(channel_assignment = (FLAC__ChannelAssignment)0, min_bits = bits[0], ca = (FLAC__ChannelAssignment)1; (int)ca <= 3; ca = (FLAC__ChannelAssignment)((int)ca + 1)) { - if(bits[ca] < min_bits) { - min_bits = bits[ca]; - channel_assignment = ca; - } - } - } - - frame_header.channel_assignment = channel_assignment; - - if(!FLAC__frame_add_header(&frame_header, encoder->protected_->streamable_subset, encoder->private_->frame)) { - encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR; - return false; - } - - switch(channel_assignment) { - case FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT: - left_subframe = &encoder->private_->subframe_workspace [0][encoder->private_->best_subframe [0]]; - right_subframe = &encoder->private_->subframe_workspace [1][encoder->private_->best_subframe [1]]; - break; - case FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE: - left_subframe = &encoder->private_->subframe_workspace [0][encoder->private_->best_subframe [0]]; - right_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]]; - break; - case FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE: - left_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]]; - right_subframe = &encoder->private_->subframe_workspace [1][encoder->private_->best_subframe [1]]; - break; - case FLAC__CHANNEL_ASSIGNMENT_MID_SIDE: - left_subframe = &encoder->private_->subframe_workspace_mid_side[0][encoder->private_->best_subframe_mid_side[0]]; - right_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]]; - break; - default: - FLAC__ASSERT(0); - } - - switch(channel_assignment) { - case FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT: - left_bps = encoder->private_->subframe_bps [0]; - right_bps = encoder->private_->subframe_bps [1]; - break; - case FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE: - left_bps = encoder->private_->subframe_bps [0]; - right_bps = encoder->private_->subframe_bps_mid_side[1]; - break; - case FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE: - left_bps = encoder->private_->subframe_bps_mid_side[1]; - right_bps = encoder->private_->subframe_bps [1]; - break; - case FLAC__CHANNEL_ASSIGNMENT_MID_SIDE: - left_bps = encoder->private_->subframe_bps_mid_side[0]; - right_bps = encoder->private_->subframe_bps_mid_side[1]; - break; - default: - FLAC__ASSERT(0); - } - - /* note that encoder_add_subframe_ sets the state for us in case of an error */ - if(!add_subframe_(encoder, &frame_header, left_bps , left_subframe , encoder->private_->frame)) - return false; - if(!add_subframe_(encoder, &frame_header, right_bps, right_subframe, encoder->private_->frame)) - return false; - } - else { - if(!FLAC__frame_add_header(&frame_header, encoder->protected_->streamable_subset, encoder->private_->frame)) { - encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR; - return false; - } - - for(channel = 0; channel < encoder->protected_->channels; channel++) { - if(!add_subframe_(encoder, &frame_header, encoder->private_->subframe_bps[channel], &encoder->private_->subframe_workspace[channel][encoder->private_->best_subframe[channel]], encoder->private_->frame)) { - /* the above function sets the state for us in case of an error */ - return false; - } - } - } - - if(encoder->protected_->loose_mid_side_stereo) { - encoder->private_->loose_mid_side_stereo_frame_count++; - if(encoder->private_->loose_mid_side_stereo_frame_count >= encoder->private_->loose_mid_side_stereo_frames) - encoder->private_->loose_mid_side_stereo_frame_count = 0; - } - - encoder->private_->last_channel_assignment = frame_header.channel_assignment; - - return true; -} - -FLAC__bool process_subframe_( - FLAC__StreamEncoder *encoder, - unsigned min_partition_order, - unsigned max_partition_order, - FLAC__bool precompute_partition_sums, - const FLAC__FrameHeader *frame_header, - unsigned subframe_bps, - const FLAC__int32 integer_signal[], -#ifndef FLAC__INTEGER_ONLY_LIBRARY - const FLAC__real real_signal[], -#endif - FLAC__Subframe *subframe[2], - FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents[2], - FLAC__int32 *residual[2], - unsigned *best_subframe, - unsigned *best_bits -) -{ -#ifndef FLAC__INTEGER_ONLY_LIBRARY - FLAC__float fixed_residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]; -#else - FLAC__fixedpoint fixed_residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]; -#endif -#ifndef FLAC__INTEGER_ONLY_LIBRARY - FLAC__double lpc_residual_bits_per_sample; - FLAC__real autoc[FLAC__MAX_LPC_ORDER+1]; /* WATCHOUT: the size is important even though encoder->protected_->max_lpc_order might be less; some asm routines need all the space */ - FLAC__double lpc_error[FLAC__MAX_LPC_ORDER]; - unsigned min_lpc_order, max_lpc_order, lpc_order; - unsigned min_qlp_coeff_precision, max_qlp_coeff_precision, qlp_coeff_precision; -#endif - unsigned min_fixed_order, max_fixed_order, guess_fixed_order, fixed_order; - unsigned rice_parameter; - unsigned _candidate_bits, _best_bits; - unsigned _best_subframe; - - /* verbatim subframe is the baseline against which we measure other compressed subframes */ - _best_subframe = 0; - if(encoder->private_->disable_verbatim_subframes && frame_header->blocksize >= FLAC__MAX_FIXED_ORDER) - _best_bits = UINT_MAX; - else - _best_bits = evaluate_verbatim_subframe_(integer_signal, frame_header->blocksize, subframe_bps, subframe[_best_subframe]); - - if(frame_header->blocksize >= FLAC__MAX_FIXED_ORDER) { - unsigned signal_is_constant = false; - guess_fixed_order = encoder->private_->local_fixed_compute_best_predictor(integer_signal+FLAC__MAX_FIXED_ORDER, frame_header->blocksize-FLAC__MAX_FIXED_ORDER, fixed_residual_bits_per_sample); - /* check for constant subframe */ - if( - !encoder->private_->disable_constant_subframes && -#ifndef FLAC__INTEGER_ONLY_LIBRARY - fixed_residual_bits_per_sample[1] == 0.0 -#else - fixed_residual_bits_per_sample[1] == FLAC__FP_ZERO -#endif - ) { - /* the above means it's possible all samples are the same value; now double-check it: */ - unsigned i; - signal_is_constant = true; - for(i = 1; i < frame_header->blocksize; i++) { - if(integer_signal[0] != integer_signal[i]) { - signal_is_constant = false; - break; - } - } - } - if(signal_is_constant) { - _candidate_bits = evaluate_constant_subframe_(integer_signal[0], subframe_bps, subframe[!_best_subframe]); - if(_candidate_bits < _best_bits) { - _best_subframe = !_best_subframe; - _best_bits = _candidate_bits; - } - } - else { - if(!encoder->private_->disable_fixed_subframes || (encoder->protected_->max_lpc_order == 0 && _best_bits == UINT_MAX)) { - /* encode fixed */ - if(encoder->protected_->do_exhaustive_model_search) { - min_fixed_order = 0; - max_fixed_order = FLAC__MAX_FIXED_ORDER; - } - else { - min_fixed_order = max_fixed_order = guess_fixed_order; - } - for(fixed_order = min_fixed_order; fixed_order <= max_fixed_order; fixed_order++) { -#ifndef FLAC__INTEGER_ONLY_LIBRARY - if(fixed_residual_bits_per_sample[fixed_order] >= (FLAC__float)subframe_bps) - continue; /* don't even try */ - rice_parameter = (fixed_residual_bits_per_sample[fixed_order] > 0.0)? (unsigned)(fixed_residual_bits_per_sample[fixed_order]+0.5) : 0; /* 0.5 is for rounding */ -#else - if(FLAC__fixedpoint_trunc(fixed_residual_bits_per_sample[fixed_order]) >= (int)subframe_bps) - continue; /* don't even try */ - rice_parameter = (fixed_residual_bits_per_sample[fixed_order] > FLAC__FP_ZERO)? (unsigned)FLAC__fixedpoint_trunc(fixed_residual_bits_per_sample[fixed_order]+FLAC__FP_ONE_HALF) : 0; /* 0.5 is for rounding */ -#endif -#ifndef FLAC__SYMMETRIC_RICE - rice_parameter++; /* to account for the signed->unsigned conversion during rice coding */ -#endif - if(rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) { -#ifdef DEBUG_VERBOSE - fprintf(stderr, "clipping rice_parameter (%u -> %u) @0\n", rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1); -#endif - rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1; - } - _candidate_bits = - evaluate_fixed_subframe_( - encoder, - integer_signal, - residual[!_best_subframe], - encoder->private_->abs_residual, - encoder->private_->abs_residual_partition_sums, - encoder->private_->raw_bits_per_partition, - frame_header->blocksize, - subframe_bps, - fixed_order, - rice_parameter, - min_partition_order, - max_partition_order, - precompute_partition_sums, - encoder->protected_->do_escape_coding, - encoder->protected_->rice_parameter_search_dist, - subframe[!_best_subframe], - partitioned_rice_contents[!_best_subframe] - ); - if(_candidate_bits < _best_bits) { - _best_subframe = !_best_subframe; - _best_bits = _candidate_bits; - } - } - } - -#ifndef FLAC__INTEGER_ONLY_LIBRARY - /* encode lpc */ - if(encoder->protected_->max_lpc_order > 0) { - if(encoder->protected_->max_lpc_order >= frame_header->blocksize) - max_lpc_order = frame_header->blocksize-1; - else - max_lpc_order = encoder->protected_->max_lpc_order; - if(max_lpc_order > 0) { - encoder->private_->local_lpc_compute_autocorrelation(real_signal, frame_header->blocksize, max_lpc_order+1, autoc); - /* if autoc[0] == 0.0, the signal is constant and we usually won't get here, but it can happen */ - if(autoc[0] != 0.0) { - FLAC__lpc_compute_lp_coefficients(autoc, max_lpc_order, encoder->private_->lp_coeff, lpc_error); - if(encoder->protected_->do_exhaustive_model_search) { - min_lpc_order = 1; - } - else { - unsigned guess_lpc_order = FLAC__lpc_compute_best_order(lpc_error, max_lpc_order, frame_header->blocksize, subframe_bps); - min_lpc_order = max_lpc_order = guess_lpc_order; - } - for(lpc_order = min_lpc_order; lpc_order <= max_lpc_order; lpc_order++) { - lpc_residual_bits_per_sample = FLAC__lpc_compute_expected_bits_per_residual_sample(lpc_error[lpc_order-1], frame_header->blocksize-lpc_order); - if(lpc_residual_bits_per_sample >= (FLAC__double)subframe_bps) - continue; /* don't even try */ - rice_parameter = (lpc_residual_bits_per_sample > 0.0)? (unsigned)(lpc_residual_bits_per_sample+0.5) : 0; /* 0.5 is for rounding */ -#ifndef FLAC__SYMMETRIC_RICE - rice_parameter++; /* to account for the signed->unsigned conversion during rice coding */ -#endif - if(rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) { -#ifdef DEBUG_VERBOSE - fprintf(stderr, "clipping rice_parameter (%u -> %u) @1\n", rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1); -#endif - rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1; - } - if(encoder->protected_->do_qlp_coeff_prec_search) { - min_qlp_coeff_precision = FLAC__MIN_QLP_COEFF_PRECISION; - /* ensure a 32-bit datapath throughout for 16bps or less */ - if(subframe_bps <= 16) - max_qlp_coeff_precision = min(32 - subframe_bps - lpc_order, FLAC__MAX_QLP_COEFF_PRECISION); - else - max_qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION; - } - else { - min_qlp_coeff_precision = max_qlp_coeff_precision = encoder->protected_->qlp_coeff_precision; - } - for(qlp_coeff_precision = min_qlp_coeff_precision; qlp_coeff_precision <= max_qlp_coeff_precision; qlp_coeff_precision++) { - _candidate_bits = - evaluate_lpc_subframe_( - encoder, - integer_signal, - residual[!_best_subframe], - encoder->private_->abs_residual, - encoder->private_->abs_residual_partition_sums, - encoder->private_->raw_bits_per_partition, - encoder->private_->lp_coeff[lpc_order-1], - frame_header->blocksize, - subframe_bps, - lpc_order, - qlp_coeff_precision, - rice_parameter, - min_partition_order, - max_partition_order, - precompute_partition_sums, - encoder->protected_->do_escape_coding, - encoder->protected_->rice_parameter_search_dist, - subframe[!_best_subframe], - partitioned_rice_contents[!_best_subframe] - ); - if(_candidate_bits > 0) { /* if == 0, there was a problem quantizing the lpcoeffs */ - if(_candidate_bits < _best_bits) { - _best_subframe = !_best_subframe; - _best_bits = _candidate_bits; - } - } - } - } - } - } - } -#endif /* !defined FLAC__INTEGER_ONLY_LIBRARY */ - } - } - - /* under rare circumstances this can happen when all but lpc subframe types are disabled: */ - if(_best_bits == UINT_MAX) { - FLAC__ASSERT(_best_subframe == 0); - _best_bits = evaluate_verbatim_subframe_(integer_signal, frame_header->blocksize, subframe_bps, subframe[_best_subframe]); - } - - *best_subframe = _best_subframe; - *best_bits = _best_bits; - - return true; -} - -FLAC__bool add_subframe_( - FLAC__StreamEncoder *encoder, - const FLAC__FrameHeader *frame_header, - unsigned subframe_bps, - const FLAC__Subframe *subframe, - FLAC__BitBuffer *frame -) -{ - switch(subframe->type) { - case FLAC__SUBFRAME_TYPE_CONSTANT: - if(!FLAC__subframe_add_constant(&(subframe->data.constant), subframe_bps, subframe->wasted_bits, frame)) { - encoder->protected_->state = FLAC__STREAM_ENCODER_FATAL_ERROR_WHILE_ENCODING; - return false; - } - break; - case FLAC__SUBFRAME_TYPE_FIXED: - if(!FLAC__subframe_add_fixed(&(subframe->data.fixed), frame_header->blocksize - subframe->data.fixed.order, subframe_bps, subframe->wasted_bits, frame)) { - encoder->protected_->state = FLAC__STREAM_ENCODER_FATAL_ERROR_WHILE_ENCODING; - return false; - } - break; - case FLAC__SUBFRAME_TYPE_LPC: - if(!FLAC__subframe_add_lpc(&(subframe->data.lpc), frame_header->blocksize - subframe->data.lpc.order, subframe_bps, subframe->wasted_bits, frame)) { - encoder->protected_->state = FLAC__STREAM_ENCODER_FATAL_ERROR_WHILE_ENCODING; - return false; - } - break; - case FLAC__SUBFRAME_TYPE_VERBATIM: - if(!FLAC__subframe_add_verbatim(&(subframe->data.verbatim), frame_header->blocksize, subframe_bps, subframe->wasted_bits, frame)) { - encoder->protected_->state = FLAC__STREAM_ENCODER_FATAL_ERROR_WHILE_ENCODING; - return false; - } - break; - default: - FLAC__ASSERT(0); - } - - return true; -} - -unsigned evaluate_constant_subframe_( - const FLAC__int32 signal, - unsigned subframe_bps, - FLAC__Subframe *subframe -) -{ - subframe->type = FLAC__SUBFRAME_TYPE_CONSTANT; - subframe->data.constant.value = signal; - - return FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + subframe_bps; -} - -unsigned evaluate_fixed_subframe_( - FLAC__StreamEncoder *encoder, - const FLAC__int32 signal[], - FLAC__int32 residual[], - FLAC__uint32 abs_residual[], - FLAC__uint64 abs_residual_partition_sums[], - unsigned raw_bits_per_partition[], - unsigned blocksize, - unsigned subframe_bps, - unsigned order, - unsigned rice_parameter, - unsigned min_partition_order, - unsigned max_partition_order, - FLAC__bool precompute_partition_sums, - FLAC__bool do_escape_coding, - unsigned rice_parameter_search_dist, - FLAC__Subframe *subframe, - FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents -) -{ - unsigned i, residual_bits; - const unsigned residual_samples = blocksize - order; - - FLAC__fixed_compute_residual(signal+order, residual_samples, order, residual); - - subframe->type = FLAC__SUBFRAME_TYPE_FIXED; - - subframe->data.fixed.entropy_coding_method.type = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE; - subframe->data.fixed.entropy_coding_method.data.partitioned_rice.contents = partitioned_rice_contents; - subframe->data.fixed.residual = residual; - - residual_bits = - find_best_partition_order_( - encoder->private_, - residual, - abs_residual, - abs_residual_partition_sums, - raw_bits_per_partition, - residual_samples, - order, - rice_parameter, - min_partition_order, - max_partition_order, - precompute_partition_sums, - do_escape_coding, - rice_parameter_search_dist, - &subframe->data.fixed.entropy_coding_method.data.partitioned_rice - ); - - subframe->data.fixed.order = order; - for(i = 0; i < order; i++) - subframe->data.fixed.warmup[i] = signal[i]; - - return FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + (order * subframe_bps) + residual_bits; -} - -#ifndef FLAC__INTEGER_ONLY_LIBRARY -unsigned evaluate_lpc_subframe_( - FLAC__StreamEncoder *encoder, - const FLAC__int32 signal[], - FLAC__int32 residual[], - FLAC__uint32 abs_residual[], - FLAC__uint64 abs_residual_partition_sums[], - unsigned raw_bits_per_partition[], - const FLAC__real lp_coeff[], - unsigned blocksize, - unsigned subframe_bps, - unsigned order, - unsigned qlp_coeff_precision, - unsigned rice_parameter, - unsigned min_partition_order, - unsigned max_partition_order, - FLAC__bool precompute_partition_sums, - FLAC__bool do_escape_coding, - unsigned rice_parameter_search_dist, - FLAC__Subframe *subframe, - FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents -) -{ - FLAC__int32 qlp_coeff[FLAC__MAX_LPC_ORDER]; - unsigned i, residual_bits; - int quantization, ret; - const unsigned residual_samples = blocksize - order; - - /* try to keep qlp coeff precision such that only 32-bit math is required for decode of <=16bps streams */ - if(subframe_bps <= 16) { - FLAC__ASSERT(order > 0); - FLAC__ASSERT(order <= FLAC__MAX_LPC_ORDER); - qlp_coeff_precision = min(qlp_coeff_precision, 32 - subframe_bps - FLAC__bitmath_ilog2(order)); - } - - ret = FLAC__lpc_quantize_coefficients(lp_coeff, order, qlp_coeff_precision, qlp_coeff, &quantization); - if(ret != 0) - return 0; /* this is a hack to indicate to the caller that we can't do lp at this order on this subframe */ - - if(subframe_bps + qlp_coeff_precision + FLAC__bitmath_ilog2(order) <= 32) - if(subframe_bps <= 16 && qlp_coeff_precision <= 16) - encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit(signal+order, residual_samples, qlp_coeff, order, quantization, residual); - else - encoder->private_->local_lpc_compute_residual_from_qlp_coefficients(signal+order, residual_samples, qlp_coeff, order, quantization, residual); - else - encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_64bit(signal+order, residual_samples, qlp_coeff, order, quantization, residual); - - subframe->type = FLAC__SUBFRAME_TYPE_LPC; - - subframe->data.lpc.entropy_coding_method.type = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE; - subframe->data.lpc.entropy_coding_method.data.partitioned_rice.contents = partitioned_rice_contents; - subframe->data.lpc.residual = residual; - - residual_bits = - find_best_partition_order_( - encoder->private_, - residual, - abs_residual, - abs_residual_partition_sums, - raw_bits_per_partition, - residual_samples, - order, - rice_parameter, - min_partition_order, - max_partition_order, - precompute_partition_sums, - do_escape_coding, - rice_parameter_search_dist, - &subframe->data.fixed.entropy_coding_method.data.partitioned_rice - ); - - subframe->data.lpc.order = order; - subframe->data.lpc.qlp_coeff_precision = qlp_coeff_precision; - subframe->data.lpc.quantization_level = quantization; - memcpy(subframe->data.lpc.qlp_coeff, qlp_coeff, sizeof(FLAC__int32)*FLAC__MAX_LPC_ORDER); - for(i = 0; i < order; i++) - subframe->data.lpc.warmup[i] = signal[i]; - - return FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + FLAC__SUBFRAME_LPC_QLP_COEFF_PRECISION_LEN + FLAC__SUBFRAME_LPC_QLP_SHIFT_LEN + (order * (qlp_coeff_precision + subframe_bps)) + residual_bits; -} -#endif - -unsigned evaluate_verbatim_subframe_( - const FLAC__int32 signal[], - unsigned blocksize, - unsigned subframe_bps, - FLAC__Subframe *subframe -) -{ - subframe->type = FLAC__SUBFRAME_TYPE_VERBATIM; - - subframe->data.verbatim.data = signal; - - return FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + (blocksize * subframe_bps); -} - -unsigned find_best_partition_order_( - FLAC__StreamEncoderPrivate *private_, - const FLAC__int32 residual[], - FLAC__uint32 abs_residual[], - FLAC__uint64 abs_residual_partition_sums[], - unsigned raw_bits_per_partition[], - unsigned residual_samples, - unsigned predictor_order, - unsigned rice_parameter, - unsigned min_partition_order, - unsigned max_partition_order, - FLAC__bool precompute_partition_sums, - FLAC__bool do_escape_coding, - unsigned rice_parameter_search_dist, - FLAC__EntropyCodingMethod_PartitionedRice *best_partitioned_rice -) -{ - FLAC__int32 r; - unsigned residual_bits, best_residual_bits = 0; - unsigned residual_sample; - unsigned best_parameters_index = 0; - const unsigned blocksize = residual_samples + predictor_order; - - /* compute abs(residual) for use later */ - for(residual_sample = 0; residual_sample < residual_samples; residual_sample++) { - r = residual[residual_sample]; - abs_residual[residual_sample] = (FLAC__uint32)(r<0? -r : r); - } - - max_partition_order = FLAC__format_get_max_rice_partition_order_from_blocksize_limited_max_and_predictor_order(max_partition_order, blocksize, predictor_order); - min_partition_order = min(min_partition_order, max_partition_order); - - if(precompute_partition_sums) { - int partition_order; - unsigned sum; - - precompute_partition_info_sums_(abs_residual, abs_residual_partition_sums, residual_samples, predictor_order, min_partition_order, max_partition_order); - - if(do_escape_coding) - precompute_partition_info_escapes_(residual, raw_bits_per_partition, residual_samples, predictor_order, min_partition_order, max_partition_order); - - for(partition_order = (int)max_partition_order, sum = 0; partition_order >= (int)min_partition_order; partition_order--) { -#ifdef DONT_ESTIMATE_RICE_BITS - if(! - set_partitioned_rice_with_precompute_( - residual, - abs_residual_partition_sums+sum, - raw_bits_per_partition+sum, - residual_samples, - predictor_order, - rice_parameter, - rice_parameter_search_dist, - (unsigned)partition_order, - do_escape_coding, - &private_->partitioned_rice_contents_extra[!best_parameters_index], - &residual_bits - ) - ) -#else - if(! - set_partitioned_rice_with_precompute_( - abs_residual, - abs_residual_partition_sums+sum, - raw_bits_per_partition+sum, - residual_samples, - predictor_order, - rice_parameter, - rice_parameter_search_dist, - (unsigned)partition_order, - do_escape_coding, - &private_->partitioned_rice_contents_extra[!best_parameters_index], - &residual_bits - ) - ) -#endif - { - FLAC__ASSERT(best_residual_bits != 0); - break; - } - sum += 1u << partition_order; - if(best_residual_bits == 0 || residual_bits < best_residual_bits) { - best_residual_bits = residual_bits; - best_parameters_index = !best_parameters_index; - best_partitioned_rice->order = partition_order; - } - } - } - else { - unsigned partition_order; - for(partition_order = min_partition_order; partition_order <= max_partition_order; partition_order++) { -#ifdef DONT_ESTIMATE_RICE_BITS - if(! - set_partitioned_rice_( - abs_residual, - residual, - residual_samples, - predictor_order, - rice_parameter, - rice_parameter_search_dist, - partition_order, - &private_->partitioned_rice_contents_extra[!best_parameters_index], - &residual_bits - ) - ) -#else - if(! - set_partitioned_rice_( - abs_residual, - residual_samples, - predictor_order, - rice_parameter, - rice_parameter_search_dist, - partition_order, - &private_->partitioned_rice_contents_extra[!best_parameters_index], - &residual_bits - ) - ) -#endif - { - FLAC__ASSERT(best_residual_bits != 0); - break; - } - if(best_residual_bits == 0 || residual_bits < best_residual_bits) { - best_residual_bits = residual_bits; - best_parameters_index = !best_parameters_index; - best_partitioned_rice->order = partition_order; - } - } - } - - /* - * We are allowed to de-const the pointer based on our special knowledge; - * it is const to the outside world. - */ - { - FLAC__EntropyCodingMethod_PartitionedRiceContents* best_partitioned_rice_contents = (FLAC__EntropyCodingMethod_PartitionedRiceContents*)best_partitioned_rice->contents; - FLAC__format_entropy_coding_method_partitioned_rice_contents_ensure_size(best_partitioned_rice_contents, max(6, best_partitioned_rice->order)); - memcpy(best_partitioned_rice_contents->parameters, private_->partitioned_rice_contents_extra[best_parameters_index].parameters, sizeof(unsigned)*(1<<(best_partitioned_rice->order))); - memcpy(best_partitioned_rice_contents->raw_bits, private_->partitioned_rice_contents_extra[best_parameters_index].raw_bits, sizeof(unsigned)*(1<<(best_partitioned_rice->order))); - } - - return best_residual_bits; -} - -void precompute_partition_info_sums_( - const FLAC__uint32 abs_residual[], - FLAC__uint64 abs_residual_partition_sums[], - unsigned residual_samples, - unsigned predictor_order, - unsigned min_partition_order, - unsigned max_partition_order -) -{ - int partition_order; - unsigned from_partition, to_partition = 0; - const unsigned blocksize = residual_samples + predictor_order; - - /* first do max_partition_order */ - for(partition_order = (int)max_partition_order; partition_order >= 0; partition_order--) { - FLAC__uint64 abs_residual_partition_sum; - FLAC__uint32 abs_r; - unsigned partition, partition_sample, partition_samples, residual_sample; - const unsigned partitions = 1u << partition_order; - const unsigned default_partition_samples = blocksize >> partition_order; - - FLAC__ASSERT(default_partition_samples > predictor_order); - - for(partition = residual_sample = 0; partition < partitions; partition++) { - partition_samples = default_partition_samples; - if(partition == 0) - partition_samples -= predictor_order; - abs_residual_partition_sum = 0; - for(partition_sample = 0; partition_sample < partition_samples; partition_sample++) { - abs_r = abs_residual[residual_sample]; - abs_residual_partition_sum += abs_r; - residual_sample++; - } - abs_residual_partition_sums[partition] = abs_residual_partition_sum; - } - to_partition = partitions; - break; - } - - /* now merge partitions for lower orders */ - for(from_partition = 0, --partition_order; partition_order >= (int)min_partition_order; partition_order--) { - FLAC__uint64 s; - unsigned i; - const unsigned partitions = 1u << partition_order; - for(i = 0; i < partitions; i++) { - s = abs_residual_partition_sums[from_partition]; - from_partition++; - abs_residual_partition_sums[to_partition] = s + abs_residual_partition_sums[from_partition]; - from_partition++; - to_partition++; - } - } -} - -void precompute_partition_info_escapes_( - const FLAC__int32 residual[], - unsigned raw_bits_per_partition[], - unsigned residual_samples, - unsigned predictor_order, - unsigned min_partition_order, - unsigned max_partition_order -) -{ - int partition_order; - unsigned from_partition, to_partition = 0; - const unsigned blocksize = residual_samples + predictor_order; - - /* first do max_partition_order */ - for(partition_order = (int)max_partition_order; partition_order >= 0; partition_order--) { - FLAC__int32 r, residual_partition_min, residual_partition_max; - unsigned silog2_min, silog2_max; - unsigned partition, partition_sample, partition_samples, residual_sample; - const unsigned partitions = 1u << partition_order; - const unsigned default_partition_samples = blocksize >> partition_order; - - FLAC__ASSERT(default_partition_samples > predictor_order); - - for(partition = residual_sample = 0; partition < partitions; partition++) { - partition_samples = default_partition_samples; - if(partition == 0) - partition_samples -= predictor_order; - residual_partition_min = residual_partition_max = 0; - for(partition_sample = 0; partition_sample < partition_samples; partition_sample++) { - r = residual[residual_sample]; - if(r < residual_partition_min) - residual_partition_min = r; - else if(r > residual_partition_max) - residual_partition_max = r; - residual_sample++; - } - silog2_min = FLAC__bitmath_silog2(residual_partition_min); - silog2_max = FLAC__bitmath_silog2(residual_partition_max); - raw_bits_per_partition[partition] = max(silog2_min, silog2_max); - } - to_partition = partitions; - break; - } - - /* now merge partitions for lower orders */ - for(from_partition = 0, --partition_order; partition_order >= (int)min_partition_order; partition_order--) { - unsigned m; - unsigned i; - const unsigned partitions = 1u << partition_order; - for(i = 0; i < partitions; i++) { - m = raw_bits_per_partition[from_partition]; - from_partition++; - raw_bits_per_partition[to_partition] = max(m, raw_bits_per_partition[from_partition]); - from_partition++; - to_partition++; - } - } -} - -#ifdef VARIABLE_RICE_BITS -#undef VARIABLE_RICE_BITS -#endif -#ifndef DONT_ESTIMATE_RICE_BITS -#define VARIABLE_RICE_BITS(value, parameter) ((value) >> (parameter)) -#endif - -#ifdef DONT_ESTIMATE_RICE_BITS -FLAC__bool set_partitioned_rice_( - const FLAC__uint32 abs_residual[], - const FLAC__int32 residual[], - const unsigned residual_samples, - const unsigned predictor_order, - const unsigned suggested_rice_parameter, - const unsigned rice_parameter_search_dist, - const unsigned partition_order, - FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents, - unsigned *bits -) -#else -FLAC__bool set_partitioned_rice_( - const FLAC__uint32 abs_residual[], - const unsigned residual_samples, - const unsigned predictor_order, - const unsigned suggested_rice_parameter, - const unsigned rice_parameter_search_dist, - const unsigned partition_order, - FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents, - unsigned *bits -) -#endif -{ - unsigned rice_parameter, partition_bits; -#ifndef NO_RICE_SEARCH - unsigned best_partition_bits; - unsigned min_rice_parameter, max_rice_parameter, best_rice_parameter = 0; -#endif - unsigned bits_ = FLAC__ENTROPY_CODING_METHOD_TYPE_LEN + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN; - unsigned *parameters; - - FLAC__ASSERT(suggested_rice_parameter < FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER); - - FLAC__format_entropy_coding_method_partitioned_rice_contents_ensure_size(partitioned_rice_contents, max(6, partition_order)); - parameters = partitioned_rice_contents->parameters; - - if(partition_order == 0) { - unsigned i; - -#ifndef NO_RICE_SEARCH - if(rice_parameter_search_dist) { - if(suggested_rice_parameter < rice_parameter_search_dist) - min_rice_parameter = 0; - else - min_rice_parameter = suggested_rice_parameter - rice_parameter_search_dist; - max_rice_parameter = suggested_rice_parameter + rice_parameter_search_dist; - if(max_rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) { -#ifdef DEBUG_VERBOSE - fprintf(stderr, "clipping rice_parameter (%u -> %u) @2\n", max_rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1); -#endif - max_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1; - } - } - else - min_rice_parameter = max_rice_parameter = suggested_rice_parameter; - - best_partition_bits = 0xffffffff; - for(rice_parameter = min_rice_parameter; rice_parameter <= max_rice_parameter; rice_parameter++) { -#endif -#ifdef VARIABLE_RICE_BITS -#ifdef FLAC__SYMMETRIC_RICE - partition_bits = (2+rice_parameter) * residual_samples; -#else - const unsigned rice_parameter_estimate = rice_parameter-1; - partition_bits = (1+rice_parameter) * residual_samples; -#endif -#else - partition_bits = 0; -#endif - partition_bits += FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN; - for(i = 0; i < residual_samples; i++) { -#ifdef VARIABLE_RICE_BITS -#ifdef FLAC__SYMMETRIC_RICE - partition_bits += VARIABLE_RICE_BITS(abs_residual[i], rice_parameter); -#else - partition_bits += VARIABLE_RICE_BITS(abs_residual[i], rice_parameter_estimate); -#endif -#else - partition_bits += FLAC__bitbuffer_rice_bits(residual[i], rice_parameter); /* NOTE: we will need to pass in residual[] in addition to abs_residual[] */ -#endif - } -#ifndef NO_RICE_SEARCH - if(partition_bits < best_partition_bits) { - best_rice_parameter = rice_parameter; - best_partition_bits = partition_bits; - } - } -#endif - parameters[0] = best_rice_parameter; - bits_ += best_partition_bits; - } - else { - unsigned partition, residual_sample, save_residual_sample, partition_sample; - unsigned partition_samples; - FLAC__uint64 mean, k; - const unsigned partitions = 1u << partition_order; - for(partition = residual_sample = 0; partition < partitions; partition++) { - partition_samples = (residual_samples+predictor_order) >> partition_order; - if(partition == 0) { - if(partition_samples <= predictor_order) - return false; - else - partition_samples -= predictor_order; - } - mean = 0; - save_residual_sample = residual_sample; - for(partition_sample = 0; partition_sample < partition_samples; residual_sample++, partition_sample++) - mean += abs_residual[residual_sample]; - residual_sample = save_residual_sample; -#ifdef FLAC__SYMMETRIC_RICE - mean += partition_samples >> 1; /* for rounding effect */ - mean /= partition_samples; - - /* calc rice_parameter = floor(log2(mean)) */ - rice_parameter = 0; - mean>>=1; - while(mean) { - rice_parameter++; - mean >>= 1; - } -#else - /* we are basically calculating the size in bits of the - * average residual magnitude in the partition: - * rice_parameter = floor(log2(mean/partition_samples)) - * 'mean' is not a good name for the variable, it is - * actually the sum of magnitudes of all residual values - * in the partition, so the actual mean is - * mean/partition_samples - */ - for(rice_parameter = 0, k = partition_samples; k < mean; rice_parameter++, k <<= 1) - ; -#endif - if(rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) { -#ifdef DEBUG_VERBOSE - fprintf(stderr, "clipping rice_parameter (%u -> %u) @3\n", rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1); -#endif - rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1; - } - -#ifndef NO_RICE_SEARCH - if(rice_parameter_search_dist) { - if(rice_parameter < rice_parameter_search_dist) - min_rice_parameter = 0; - else - min_rice_parameter = rice_parameter - rice_parameter_search_dist; - max_rice_parameter = rice_parameter + rice_parameter_search_dist; - if(max_rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) { -#ifdef DEBUG_VERBOSE - fprintf(stderr, "clipping rice_parameter (%u -> %u) @4\n", max_rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1); -#endif - max_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1; - } - } - else - min_rice_parameter = max_rice_parameter = rice_parameter; - - best_partition_bits = 0xffffffff; - for(rice_parameter = min_rice_parameter; rice_parameter <= max_rice_parameter; rice_parameter++) { -#endif -#ifdef VARIABLE_RICE_BITS -#ifdef FLAC__SYMMETRIC_RICE - partition_bits = (2+rice_parameter) * partition_samples; -#else - const unsigned rice_parameter_estimate = rice_parameter-1; - partition_bits = (1+rice_parameter) * partition_samples; -#endif -#else - partition_bits = 0; -#endif - partition_bits += FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN; - save_residual_sample = residual_sample; - for(partition_sample = 0; partition_sample < partition_samples; residual_sample++, partition_sample++) { -#ifdef VARIABLE_RICE_BITS -#ifdef FLAC__SYMMETRIC_RICE - partition_bits += VARIABLE_RICE_BITS(abs_residual[residual_sample], rice_parameter); -#else - partition_bits += VARIABLE_RICE_BITS(abs_residual[residual_sample], rice_parameter_estimate); -#endif -#else - partition_bits += FLAC__bitbuffer_rice_bits(residual[residual_sample], rice_parameter); /* NOTE: we will need to pass in residual[] in addition to abs_residual[] */ -#endif - } -#ifndef NO_RICE_SEARCH - if(rice_parameter != max_rice_parameter) - residual_sample = save_residual_sample; - if(partition_bits < best_partition_bits) { - best_rice_parameter = rice_parameter; - best_partition_bits = partition_bits; - } - } -#endif - parameters[partition] = best_rice_parameter; - bits_ += best_partition_bits; - } - } - - *bits = bits_; - return true; -} - -#ifdef DONT_ESTIMATE_RICE_BITS -FLAC__bool set_partitioned_rice_with_precompute_( - const FLAC__int32 residual[], - const FLAC__uint64 abs_residual_partition_sums[], - const unsigned raw_bits_per_partition[], - const unsigned residual_samples, - const unsigned predictor_order, - const unsigned suggested_rice_parameter, - const unsigned rice_parameter_search_dist, - const unsigned partition_order, - const FLAC__bool search_for_escapes, - FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents, - unsigned *bits -) -#else -FLAC__bool set_partitioned_rice_with_precompute_( - const FLAC__uint32 abs_residual[], - const FLAC__uint64 abs_residual_partition_sums[], - const unsigned raw_bits_per_partition[], - const unsigned residual_samples, - const unsigned predictor_order, - const unsigned suggested_rice_parameter, - const unsigned rice_parameter_search_dist, - const unsigned partition_order, - const FLAC__bool search_for_escapes, - FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents, - unsigned *bits -) -#endif -{ - unsigned rice_parameter, partition_bits; -#ifndef NO_RICE_SEARCH - unsigned best_partition_bits; - unsigned min_rice_parameter, max_rice_parameter, best_rice_parameter = 0; -#endif - unsigned flat_bits; - unsigned bits_ = FLAC__ENTROPY_CODING_METHOD_TYPE_LEN + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN; - unsigned *parameters, *raw_bits; - - FLAC__ASSERT(suggested_rice_parameter < FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER); - - FLAC__format_entropy_coding_method_partitioned_rice_contents_ensure_size(partitioned_rice_contents, max(6, partition_order)); - parameters = partitioned_rice_contents->parameters; - raw_bits = partitioned_rice_contents->raw_bits; - - if(partition_order == 0) { - unsigned i; - -#ifndef NO_RICE_SEARCH - if(rice_parameter_search_dist) { - if(suggested_rice_parameter < rice_parameter_search_dist) - min_rice_parameter = 0; - else - min_rice_parameter = suggested_rice_parameter - rice_parameter_search_dist; - max_rice_parameter = suggested_rice_parameter + rice_parameter_search_dist; - if(max_rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) { -#ifdef DEBUG_VERBOSE - fprintf(stderr, "clipping rice_parameter (%u -> %u) @5\n", max_rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1); -#endif - max_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1; - } - } - else - min_rice_parameter = max_rice_parameter = suggested_rice_parameter; - - best_partition_bits = 0xffffffff; - for(rice_parameter = min_rice_parameter; rice_parameter <= max_rice_parameter; rice_parameter++) { -#endif -#ifdef VARIABLE_RICE_BITS -#ifdef FLAC__SYMMETRIC_RICE - partition_bits = (2+rice_parameter) * residual_samples; -#else - const unsigned rice_parameter_estimate = rice_parameter-1; - partition_bits = (1+rice_parameter) * residual_samples; -#endif -#else - partition_bits = 0; -#endif - partition_bits += FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN; - for(i = 0; i < residual_samples; i++) { -#ifdef VARIABLE_RICE_BITS -#ifdef FLAC__SYMMETRIC_RICE - partition_bits += VARIABLE_RICE_BITS(abs_residual[i], rice_parameter); -#else - partition_bits += VARIABLE_RICE_BITS(abs_residual[i], rice_parameter_estimate); -#endif -#else - partition_bits += FLAC__bitbuffer_rice_bits(residual[i], rice_parameter); /* NOTE: we will need to pass in residual[] instead of abs_residual[] */ -#endif - } -#ifndef NO_RICE_SEARCH - if(partition_bits < best_partition_bits) { - best_rice_parameter = rice_parameter; - best_partition_bits = partition_bits; - } - } -#endif - if(search_for_escapes) { - flat_bits = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_RAW_LEN + raw_bits_per_partition[0] * residual_samples; - if(flat_bits <= best_partition_bits) { - raw_bits[0] = raw_bits_per_partition[0]; - best_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER; - best_partition_bits = flat_bits; - } - } - parameters[0] = best_rice_parameter; - bits_ += best_partition_bits; - } - else { - unsigned partition, residual_sample, save_residual_sample, partition_sample; - unsigned partition_samples; - FLAC__uint64 mean, k; - const unsigned partitions = 1u << partition_order; - for(partition = residual_sample = 0; partition < partitions; partition++) { - partition_samples = (residual_samples+predictor_order) >> partition_order; - if(partition == 0) { - if(partition_samples <= predictor_order) - return false; - else - partition_samples -= predictor_order; - } - mean = abs_residual_partition_sums[partition]; -#ifdef FLAC__SYMMETRIC_RICE - mean += partition_samples >> 1; /* for rounding effect */ - mean /= partition_samples; - - /* calc rice_parameter = floor(log2(mean)) */ - rice_parameter = 0; - mean>>=1; - while(mean) { - rice_parameter++; - mean >>= 1; - } -#else - /* we are basically calculating the size in bits of the - * average residual magnitude in the partition: - * rice_parameter = floor(log2(mean/partition_samples)) - * 'mean' is not a good name for the variable, it is - * actually the sum of magnitudes of all residual values - * in the partition, so the actual mean is - * mean/partition_samples - */ - for(rice_parameter = 0, k = partition_samples; k < mean; rice_parameter++, k <<= 1) - ; -#endif - if(rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) { -#ifdef DEBUG_VERBOSE - fprintf(stderr, "clipping rice_parameter (%u -> %u) @6\n", rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1); -#endif - rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1; - } - -#ifndef NO_RICE_SEARCH - if(rice_parameter_search_dist) { - if(rice_parameter < rice_parameter_search_dist) - min_rice_parameter = 0; - else - min_rice_parameter = rice_parameter - rice_parameter_search_dist; - max_rice_parameter = rice_parameter + rice_parameter_search_dist; - if(max_rice_parameter >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) { -#ifdef DEBUG_VERBOSE - fprintf(stderr, "clipping rice_parameter (%u -> %u) @7\n", max_rice_parameter, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1); -#endif - max_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER - 1; - } - } - else - min_rice_parameter = max_rice_parameter = rice_parameter; - - best_partition_bits = 0xffffffff; - for(rice_parameter = min_rice_parameter; rice_parameter <= max_rice_parameter; rice_parameter++) { -#endif -#ifdef VARIABLE_RICE_BITS -#ifdef FLAC__SYMMETRIC_RICE - partition_bits = (2+rice_parameter) * partition_samples; -#else - const unsigned rice_parameter_estimate = rice_parameter-1; - partition_bits = (1+rice_parameter) * partition_samples; -#endif -#else - partition_bits = 0; -#endif - partition_bits += FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN; - save_residual_sample = residual_sample; - for(partition_sample = 0; partition_sample < partition_samples; residual_sample++, partition_sample++) { -#ifdef VARIABLE_RICE_BITS -#ifdef FLAC__SYMMETRIC_RICE - partition_bits += VARIABLE_RICE_BITS(abs_residual[residual_sample], rice_parameter); -#else - partition_bits += VARIABLE_RICE_BITS(abs_residual[residual_sample], rice_parameter_estimate); -#endif -#else - partition_bits += FLAC__bitbuffer_rice_bits(residual[residual_sample], rice_parameter); /* NOTE: we will need to pass in residual[] instead of abs_residual[] */ -#endif - } -#ifndef NO_RICE_SEARCH - if(rice_parameter != max_rice_parameter) - residual_sample = save_residual_sample; - if(partition_bits < best_partition_bits) { - best_rice_parameter = rice_parameter; - best_partition_bits = partition_bits; - } - } -#endif - if(search_for_escapes) { - flat_bits = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_RAW_LEN + raw_bits_per_partition[partition] * partition_samples; - if(flat_bits <= best_partition_bits) { - raw_bits[partition] = raw_bits_per_partition[partition]; - best_rice_parameter = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER; - best_partition_bits = flat_bits; - } - } - parameters[partition] = best_rice_parameter; - bits_ += best_partition_bits; - } - } - - *bits = bits_; - return true; -} - -unsigned get_wasted_bits_(FLAC__int32 signal[], unsigned samples) -{ - unsigned i, shift; - FLAC__int32 x = 0; - - for(i = 0; i < samples && !(x&1); i++) - x |= signal[i]; - - if(x == 0) { - shift = 0; - } - else { - for(shift = 0; !(x&1); shift++) - x >>= 1; - } - - if(shift > 0) { - for(i = 0; i < samples; i++) - signal[i] >>= shift; - } - - return shift; -} - -void append_to_verify_fifo_(verify_input_fifo *fifo, const FLAC__int32 * const input[], unsigned input_offset, unsigned channels, unsigned wide_samples) -{ - unsigned channel; - - for(channel = 0; channel < channels; channel++) - memcpy(&fifo->data[channel][fifo->tail], &input[channel][input_offset], sizeof(FLAC__int32) * wide_samples); - - fifo->tail += wide_samples; - - FLAC__ASSERT(fifo->tail <= fifo->size); -} - -void append_to_verify_fifo_interleaved_(verify_input_fifo *fifo, const FLAC__int32 input[], unsigned input_offset, unsigned channels, unsigned wide_samples) -{ - unsigned channel; - unsigned sample, wide_sample; - unsigned tail = fifo->tail; - - sample = input_offset * channels; - for(wide_sample = 0; wide_sample < wide_samples; wide_sample++) { - for(channel = 0; channel < channels; channel++) - fifo->data[channel][tail] = input[sample++]; - tail++; - } - fifo->tail = tail; - - FLAC__ASSERT(fifo->tail <= fifo->size); -} - -FLAC__StreamDecoderReadStatus verify_read_callback_(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], unsigned *bytes, void *client_data) -{ - FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder*)client_data; - const unsigned encoded_bytes = encoder->private_->verify.output.bytes; - (void)decoder; - - if(encoder->private_->verify.needs_magic_hack) { - FLAC__ASSERT(*bytes >= FLAC__STREAM_SYNC_LENGTH); - *bytes = FLAC__STREAM_SYNC_LENGTH; - memcpy(buffer, FLAC__STREAM_SYNC_STRING, *bytes); - encoder->private_->verify.needs_magic_hack = false; - } - else { - if(encoded_bytes == 0) { - /* - * If we get here, a FIFO underflow has occurred, - * which means there is a bug somewhere. - */ - FLAC__ASSERT(0); - return FLAC__STREAM_DECODER_READ_STATUS_ABORT; - } - else if(encoded_bytes < *bytes) - *bytes = encoded_bytes; - memcpy(buffer, encoder->private_->verify.output.data, *bytes); - encoder->private_->verify.output.data += *bytes; - encoder->private_->verify.output.bytes -= *bytes; - } - - return FLAC__STREAM_DECODER_READ_STATUS_CONTINUE; -} - -FLAC__StreamDecoderWriteStatus verify_write_callback_(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data) -{ - FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder *)client_data; - unsigned channel; - const unsigned channels = FLAC__stream_decoder_get_channels(decoder); - const unsigned blocksize = frame->header.blocksize; - const unsigned bytes_per_block = sizeof(FLAC__int32) * blocksize; - - for(channel = 0; channel < channels; channel++) { - if(0 != memcmp(buffer[channel], encoder->private_->verify.input_fifo.data[channel], bytes_per_block)) { - unsigned i, sample = 0; - FLAC__int32 expect = 0, got = 0; - - for(i = 0; i < blocksize; i++) { - if(buffer[channel][i] != encoder->private_->verify.input_fifo.data[channel][i]) { - sample = i; - expect = (FLAC__int32)encoder->private_->verify.input_fifo.data[channel][i]; - got = (FLAC__int32)buffer[channel][i]; - break; - } - } - FLAC__ASSERT(i < blocksize); - FLAC__ASSERT(frame->header.number_type == FLAC__FRAME_NUMBER_TYPE_SAMPLE_NUMBER); - encoder->private_->verify.error_stats.absolute_sample = frame->header.number.sample_number + sample; - encoder->private_->verify.error_stats.frame_number = (unsigned)(frame->header.number.sample_number / blocksize); - encoder->private_->verify.error_stats.channel = channel; - encoder->private_->verify.error_stats.sample = sample; - encoder->private_->verify.error_stats.expected = expect; - encoder->private_->verify.error_stats.got = got; - encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA; - return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT; - } - } - /* dequeue the frame from the fifo */ - for(channel = 0; channel < channels; channel++) { - memmove(&encoder->private_->verify.input_fifo.data[channel][0], &encoder->private_->verify.input_fifo.data[channel][blocksize], encoder->private_->verify.input_fifo.tail - blocksize); - } - encoder->private_->verify.input_fifo.tail -= blocksize; - return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE; -} - -void verify_metadata_callback_(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data) -{ - (void)decoder, (void)metadata, (void)client_data; -} - -void verify_error_callback_(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data) -{ - FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder*)client_data; - (void)decoder, (void)status; - encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR; -} -- cgit v1.2.3