From f40bfc9267b13b54e6379dfe7539447662879d24 Mon Sep 17 00:00:00 2001 From: Sean Bartell Date: Sat, 25 Jun 2011 21:32:25 -0400 Subject: Add codecs to librbcodec. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Change-Id: Id7f4717d51ed02d67cb9f9cb3c0ada4a81843f97 Reviewed-on: http://gerrit.rockbox.org/137 Reviewed-by: Nils Wallménius Tested-by: Nils Wallménius --- lib/rbcodec/codecs/libmusepack/mpcdec.h | 212 ++++++++++++++++++++++++++++++++ 1 file changed, 212 insertions(+) create mode 100644 lib/rbcodec/codecs/libmusepack/mpcdec.h (limited to 'lib/rbcodec/codecs/libmusepack/mpcdec.h') diff --git a/lib/rbcodec/codecs/libmusepack/mpcdec.h b/lib/rbcodec/codecs/libmusepack/mpcdec.h new file mode 100644 index 0000000000..85536e726a --- /dev/null +++ b/lib/rbcodec/codecs/libmusepack/mpcdec.h @@ -0,0 +1,212 @@ +/* + Copyright (c) 2005-2009, The Musepack Development Team + All rights reserved. + + 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 The Musepack Development Team 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 COPYRIGHT + OWNER 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. +*/ +/// \file mpcdec.h +/// Top level include file for libmpcdec. +#ifndef _MPCDEC_H_ +#define _MPCDEC_H_ +#ifdef WIN32 +#pragma once +#endif + +#include "reader.h" +#include "streaminfo.h" +#include "config.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#if (CONFIG_CPU == MCF5250) +/* Enough IRAM but performance suffers with ICODE_ATTR. */ +#define IBSS_ATTR_MPC_LARGE_IRAM IBSS_ATTR +#define ICODE_ATTR_MPC_LARGE_IRAM +#define ICONST_ATTR_MPC_LARGE_IRAM ICONST_ATTR +/* Does not fit into IRAM. */ +#define IBSS_ATTR_MPC_BITBUFFER +#define ICODE_ATTR_MPC_SV8_BS_DEC +/* Keep the data arrays of bitsreadr.c in IRAM. */ +#define ICONST_ATTR_MPC_BITSREADER ICONST_ATTR + +#elif (CONFIG_CPU == PP5022) || (CONFIG_CPU == PP5024) +/* Enough IRAM to move additional data and code to it. */ +#define IBSS_ATTR_MPC_LARGE_IRAM IBSS_ATTR +#define ICODE_ATTR_MPC_LARGE_IRAM ICODE_ATTR +#define ICONST_ATTR_MPC_LARGE_IRAM ICONST_ATTR +/* Does not fit into IRAM. */ +#define IBSS_ATTR_MPC_BITBUFFER +#define ICODE_ATTR_MPC_SV8_BS_DEC +/* Not putting the data arrays of bitsreader.c to IRAM allows to move the + * sv7/sv8 bitstream demuxing into IRAM. This config is faster. */ +#define ICONST_ATTR_MPC_BITSREADER + +#elif defined(CPU_S5L870X) +/* Enough IRAM to move additional data and code to it. */ +#define IBSS_ATTR_MPC_LARGE_IRAM IBSS_ATTR +#define ICODE_ATTR_MPC_LARGE_IRAM ICODE_ATTR +#define ICONST_ATTR_MPC_LARGE_IRAM ICONST_ATTR +/* Faster when moved to IRAM. */ +#define IBSS_ATTR_MPC_BITBUFFER IBSS_ATTR +#define ICODE_ATTR_MPC_SV8_BS_DEC ICODE_ATTR +/* Not faster when moved to IRAM. */ +#define ICONST_ATTR_MPC_BITSREADER + +#else +/* Not enough IRAM available. */ +#define IBSS_ATTR_MPC_LARGE_IRAM +#define ICODE_ATTR_MPC_LARGE_IRAM +#define ICONST_ATTR_MPC_LARGE_IRAM +#define IBSS_ATTR_MPC_BITBUFFER +#define ICODE_ATTR_MPC_SV8_BS_DEC +#define ICONST_ATTR_MPC_BITSREADER +#endif + +enum { + MPC_FRAME_LENGTH = (36 * 32), ///< Samples per mpc frame + MPC_DECODER_BUFFER_LENGTH = (MPC_FRAME_LENGTH * 2), ///< Required buffer size for decoder (2 channels) + MPC_DECODER_SYNTH_DELAY = 481 +}; + +typedef struct mpc_decoder_t mpc_decoder; +typedef struct mpc_demux_t mpc_demux; + +typedef struct mpc_bits_reader_t { + unsigned char * buff; /// pointer on current byte + unsigned int count; /// unread bits in current byte + mpc_uint8_t *buffered_addr; /// used for rockbox Coldfire optimization only + mpc_uint32_t buffered_code; /// used for rockbox Coldfire optimization only +} mpc_bits_reader; + +typedef struct mpc_frame_info_t { + mpc_uint32_t samples; /// number of samples in the frame (counting once for multiple channels) + mpc_int32_t bits; /// number of bits consumed by this frame (-1) if end of stream + MPC_SAMPLE_FORMAT * buffer; /// frame samples buffer (size = samples * channels * sizeof(MPC_SAMPLE_FORMAT)) + mpc_bool_t is_key_frame; /// 1 if this frame is a key frame (first in block) 0 else. Set by the demuxer. +} mpc_frame_info; + +/* rockbox: not used +typedef struct mpc_chap_info_t { + mpc_uint64_t sample; /// sample where the chapter starts + mpc_uint16_t gain; /// replaygain chapter value + mpc_uint16_t peak; /// peak chapter loudness level + mpc_uint_t tag_size; /// size of the tag element (0 if no tag is present for this chapter) + char * tag; /// pointer to an APEv2 tag without the preamble +} mpc_chap_info; +*/ + +/// Initializes mpc decoder with the supplied stream info parameters. +/// \param si streaminfo structure indicating format of source stream +/// \return pointer on the initialized decoder structure if successful, 0 if not +MPC_API mpc_decoder * mpc_decoder_init(mpc_streaminfo *si); + +/* rockbox: not used +/// Releases input mpc decoder +MPC_API void mpc_decoder_exit(mpc_decoder *p_dec); +*/ + +/** + * Sets decoder sample scaling factor. All decoded samples will be multiplied + * by this factor. Useful for applying replay gain. + * @param scale_factor multiplicative scaling factor + */ +/* rockbox: changed to static +MPC_API void mpc_decoder_scale_output(mpc_decoder *p_dec, double scale_factor); +*/ + +MPC_API void mpc_decoder_decode_frame(mpc_decoder * d, mpc_bits_reader * r, mpc_frame_info * i); + +// This is the gain reference used in old replaygain +#define MPC_OLD_GAIN_REF 64.82 + +/** + * init demuxer + * @param p_reader initialized mpc_reader pointer + * @return an initialized mpc_demux pointer + */ +MPC_API mpc_demux * mpc_demux_init(mpc_reader * p_reader); +/* rockbox: not used +/// free demuxer +MPC_API void mpc_demux_exit(mpc_demux * d); +*/ +/** + * Calls mpc_decoder_scale_output to set the scaling factor according to the + * replay gain stream information and the supplied ouput level + * @param d pointer to a musepack demuxer + * @param level the desired ouput level (in db). Must be MPC_OLD_GAIN_REF (64.82 db) if you want to get the old replaygain behavior + * @param use_gain set it to MPC_TRUE if you want to set the scaling factor according to the stream gain + * @param use_title MPC_TRUE : uses the title gain, MPC_FALSE : uses the album gain + * @param clip_prevention MPC_TRUE : uses cliping prevention + */ +/* rockbox: not used +MPC_API void mpc_set_replay_level(mpc_demux * d, float level, mpc_bool_t use_gain, + mpc_bool_t use_title, mpc_bool_t clip_prevention); +*/ +/// decode frame +MPC_API mpc_status mpc_demux_decode(mpc_demux * d, mpc_frame_info * i); +/// get streaminfo +MPC_API void mpc_demux_get_info(mpc_demux * d, mpc_streaminfo * i); +/// seeks to a given sample +MPC_API mpc_status mpc_demux_seek_sample(mpc_demux * d, mpc_uint64_t destsample); +/* rockbox: not used +/// seeks to a given second +MPC_API mpc_status mpc_demux_seek_second(mpc_demux * d, double seconds); +*/ + +/* rockbox: keep static +/// \return the current position in the stream (in bits) from the beginning of the file +MPC_API mpc_seek_t mpc_demux_pos(mpc_demux * d); +*/ + +/// chapters : only for sv8 streams +/** + * Gets the number of chapters in the stream + * @param d pointer to a musepack demuxer + * @return the number of chapters found in the stream + */ +/* rockbox: not used +MPC_API mpc_int_t mpc_demux_chap_nb(mpc_demux * d); +*/ +/** + * Gets datas associated to a given chapter + * The chapter tag is an APEv2 tag without the preamble + * @param d pointer to a musepack demuxer + * @param chap_nb chapter number you want datas (from 0 to mpc_demux_chap_nb(d) - 1) + * @return the chapter information structure + */ +/* rockbox: not used +MPC_API mpc_chap_info const * mpc_demux_chap(mpc_demux * d, int chap_nb); +*/ +#ifdef __cplusplus +} +#endif +#endif -- cgit v1.2.3