From d25d24812e8120c0eb133a412287ac030eb185c9 Mon Sep 17 00:00:00 2001 From: Solomon Peachy Date: Wed, 4 Aug 2021 09:49:56 -0400 Subject: RFC: Get rid of mpegplayer plugin It might have made sense once upon a time, but in today's world... Change-Id: I5d638e6f7a2308c50ab12bd901338f02cf426aae --- apps/plugins/mpegplayer/libmpeg2/decode.c | 527 ------------------------------ 1 file changed, 527 deletions(-) delete mode 100644 apps/plugins/mpegplayer/libmpeg2/decode.c (limited to 'apps/plugins/mpegplayer/libmpeg2/decode.c') diff --git a/apps/plugins/mpegplayer/libmpeg2/decode.c b/apps/plugins/mpegplayer/libmpeg2/decode.c deleted file mode 100644 index 9c8081efbe..0000000000 --- a/apps/plugins/mpegplayer/libmpeg2/decode.c +++ /dev/null @@ -1,527 +0,0 @@ -/* - * decode.c - * Copyright (C) 2000-2003 Michel Lespinasse - * Copyright (C) 1999-2000 Aaron Holtzman - * - * This file is part of mpeg2dec, a free MPEG-2 video stream decoder. - * See http://libmpeg2.sourceforge.net/ for updates. - * - * mpeg2dec is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * mpeg2dec is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - * $Id$ - * libmpeg2 sync history: - * 2008-07-01 - CVS revision 1.114 - */ - -#include "plugin.h" - -#include "mpeg2dec_config.h" - -#include "mpeg2.h" -#include "attributes.h" -#include "mpeg2_internal.h" - -#define BUFFER_SIZE (1194 * 1024) - -#if defined(CPU_COLDFIRE) || (defined(CPU_ARM) && ARM_ARCH >= 6) -/* twice as large as on other targets because coldfire uses - * a secondary, transposed buffer for optimisation */ -static int16_t static_dct_block[128] IBSS_ATTR ATTR_ALIGN(16); -#define DCT_BLOCKSIZE (128 * sizeof (int16_t)) -#else -static int16_t static_dct_block[64] IBSS_ATTR ATTR_ALIGN(16); -#define DCT_BLOCKSIZE (64 * sizeof (int16_t)) -#endif - -const mpeg2_info_t * mpeg2_info (mpeg2dec_t * mpeg2dec) -{ - return &mpeg2dec->info; -} - -static inline int skip_chunk (mpeg2dec_t * mpeg2dec, int bytes) -{ - uint8_t * current; - uint32_t shift; - uint8_t * limit; - uint8_t byte; - - if (!bytes) - return 0; - - current = mpeg2dec->buf_start; - shift = mpeg2dec->shift; - limit = current + bytes; - - do - { - byte = *current++; - - if (shift == 0x00000100) - { - int skipped; - - mpeg2dec->shift = 0xffffff00; - skipped = current - mpeg2dec->buf_start; - mpeg2dec->buf_start = current; - - return skipped; - } - - shift = (shift | byte) << 8; - } - while (current < limit); - - mpeg2dec->shift = shift; - mpeg2dec->buf_start = current; - - return 0; -} - -static inline int copy_chunk (mpeg2dec_t * mpeg2dec, int bytes) -{ - uint8_t * current; - uint32_t shift; - uint8_t * chunk_ptr; - uint8_t * limit; - uint8_t byte; - - if (!bytes) - return 0; - - current = mpeg2dec->buf_start; - shift = mpeg2dec->shift; - chunk_ptr = mpeg2dec->chunk_ptr; - limit = current + bytes; - - do - { - byte = *current++; - - if (shift == 0x00000100) - { - int copied; - - mpeg2dec->shift = 0xffffff00; - mpeg2dec->chunk_ptr = chunk_ptr + 1; - copied = current - mpeg2dec->buf_start; - mpeg2dec->buf_start = current; - return copied; - } - - shift = (shift | byte) << 8; - *chunk_ptr++ = byte; - } - while (current < limit); - - mpeg2dec->shift = shift; - mpeg2dec->buf_start = current; - return 0; -} - -void mpeg2_buffer (mpeg2dec_t * mpeg2dec, uint8_t * start, uint8_t * end) -{ - mpeg2dec->buf_start = start; - mpeg2dec->buf_end = end; -} - -int mpeg2_getpos (mpeg2dec_t * mpeg2dec) -{ - return mpeg2dec->buf_end - mpeg2dec->buf_start; -} - -static inline mpeg2_state_t seek_chunk (mpeg2dec_t * mpeg2dec) -{ - int size, skipped; - - size = mpeg2dec->buf_end - mpeg2dec->buf_start; - skipped = skip_chunk (mpeg2dec, size); - - if (!skipped) - { - mpeg2dec->bytes_since_tag += size; - return STATE_BUFFER; - } - - mpeg2dec->bytes_since_tag += skipped; - mpeg2dec->code = mpeg2dec->buf_start[-1]; - - return STATE_INTERNAL_NORETURN; -} - -mpeg2_state_t mpeg2_seek_header (mpeg2dec_t * mpeg2dec) -{ - while (!(mpeg2dec->code == 0xb3 || - ((mpeg2dec->code == 0xb7 || mpeg2dec->code == 0xb8 || - !mpeg2dec->code) && mpeg2dec->sequence.width != (unsigned)-1))) - { - if (seek_chunk (mpeg2dec) == STATE_BUFFER) - return STATE_BUFFER; - } - - mpeg2dec->chunk_start = - mpeg2dec->chunk_ptr = mpeg2dec->chunk_buffer; - - mpeg2dec->user_data_len = 0; - - return ((mpeg2dec->code == 0xb7) ? - mpeg2_header_end(mpeg2dec) : mpeg2_parse_header(mpeg2dec)); -} - -#define RECEIVED(code,state) (((state) << 8) + (code)) - -mpeg2_state_t mpeg2_parse (mpeg2dec_t * mpeg2dec) -{ - int size_buffer, size_chunk, copied; - - if (mpeg2dec->action) - { - mpeg2_state_t state; - - state = mpeg2dec->action (mpeg2dec); - - if (state > STATE_INTERNAL_NORETURN) - return state; - } - - while (1) - { - while ((unsigned) (mpeg2dec->code - mpeg2dec->first_decode_slice) < - mpeg2dec->nb_decode_slices) - { - size_buffer = mpeg2dec->buf_end - mpeg2dec->buf_start; - size_chunk = mpeg2dec->chunk_buffer + BUFFER_SIZE - - mpeg2dec->chunk_ptr; - - if (size_buffer <= size_chunk) - { - copied = copy_chunk (mpeg2dec, size_buffer); - - if (!copied) - { - mpeg2dec->bytes_since_tag += size_buffer; - mpeg2dec->chunk_ptr += size_buffer; - return STATE_BUFFER; - } - } - else - { - copied = copy_chunk (mpeg2dec, size_chunk); - - if (!copied) - { - /* filled the chunk buffer without finding a start code */ - mpeg2dec->bytes_since_tag += size_chunk; - mpeg2dec->action = seek_chunk; - return STATE_INVALID; - } - } - - mpeg2dec->bytes_since_tag += copied; - - mpeg2_slice (&mpeg2dec->decoder, mpeg2dec->code, - mpeg2dec->chunk_start); - mpeg2dec->code = mpeg2dec->buf_start[-1]; - mpeg2dec->chunk_ptr = mpeg2dec->chunk_start; - } - - if ((unsigned) (mpeg2dec->code - 1) >= 0xb0 - 1) - break; - - if (seek_chunk (mpeg2dec) == STATE_BUFFER) - return STATE_BUFFER; - } - - mpeg2dec->action = mpeg2_seek_header; - - switch (mpeg2dec->code) - { - case 0x00: - return mpeg2dec->state; - case 0xb3: - case 0xb7: - case 0xb8: - return (mpeg2dec->state == STATE_SLICE) ? STATE_SLICE : STATE_INVALID; - default: - mpeg2dec->action = seek_chunk; - return STATE_INVALID; - } -} - -mpeg2_state_t mpeg2_parse_header (mpeg2dec_t * mpeg2dec) -{ - static int (* const process_header[9]) (mpeg2dec_t *) = - { - mpeg2_header_picture, - mpeg2_header_extension, - mpeg2_header_user_data, - mpeg2_header_sequence, - NULL, - NULL, - NULL, - NULL, - mpeg2_header_gop - }; - - int size_buffer, size_chunk, copied; - - mpeg2dec->action = mpeg2_parse_header; - mpeg2dec->info.user_data = NULL; - mpeg2dec->info.user_data_len = 0; - - while (1) - { - size_buffer = mpeg2dec->buf_end - mpeg2dec->buf_start; - size_chunk = mpeg2dec->chunk_buffer + BUFFER_SIZE - - mpeg2dec->chunk_ptr; - - if (size_buffer <= size_chunk) - { - copied = copy_chunk (mpeg2dec, size_buffer); - - if (!copied) - { - mpeg2dec->bytes_since_tag += size_buffer; - mpeg2dec->chunk_ptr += size_buffer; - return STATE_BUFFER; - } - } - else - { - copied = copy_chunk (mpeg2dec, size_chunk); - - if (!copied) - { - /* filled the chunk buffer without finding a start code */ - mpeg2dec->bytes_since_tag += size_chunk; - mpeg2dec->code = 0xb4; - mpeg2dec->action = mpeg2_seek_header; - return STATE_INVALID; - } - } - - mpeg2dec->bytes_since_tag += copied; - - if (process_header[mpeg2dec->code & 0x0b] (mpeg2dec)) - { - mpeg2dec->code = mpeg2dec->buf_start[-1]; - mpeg2dec->action = mpeg2_seek_header; - return STATE_INVALID; - } - - mpeg2dec->code = mpeg2dec->buf_start[-1]; - - switch (RECEIVED (mpeg2dec->code, mpeg2dec->state)) - { - /* state transition after a sequence header */ - case RECEIVED (0x00, STATE_SEQUENCE): - case RECEIVED (0xb8, STATE_SEQUENCE): - mpeg2_header_sequence_finalize (mpeg2dec); - break; - - /* other legal state transitions */ - case RECEIVED (0x00, STATE_GOP): - mpeg2_header_gop_finalize (mpeg2dec); - break; - case RECEIVED (0x01, STATE_PICTURE): - case RECEIVED (0x01, STATE_PICTURE_2ND): - mpeg2_header_picture_finalize (mpeg2dec); - mpeg2dec->action = mpeg2_header_slice_start; - break; - - /* legal headers within a given state */ - case RECEIVED (0xb2, STATE_SEQUENCE): - case RECEIVED (0xb2, STATE_GOP): - case RECEIVED (0xb2, STATE_PICTURE): - case RECEIVED (0xb2, STATE_PICTURE_2ND): - case RECEIVED (0xb5, STATE_SEQUENCE): - case RECEIVED (0xb5, STATE_PICTURE): - case RECEIVED (0xb5, STATE_PICTURE_2ND): - mpeg2dec->chunk_ptr = mpeg2dec->chunk_start; - continue; - - default: - mpeg2dec->action = mpeg2_seek_header; - return STATE_INVALID; - } - - mpeg2dec->chunk_start = mpeg2dec->chunk_ptr = mpeg2dec->chunk_buffer; - mpeg2dec->user_data_len = 0; - - return mpeg2dec->state; - } -} - -int mpeg2_convert (mpeg2dec_t * mpeg2dec, mpeg2_convert_t convert, void * arg) -{ - mpeg2_convert_init_t convert_init; - int error; - - error = convert (MPEG2_CONVERT_SET, NULL, &mpeg2dec->sequence, 0, - arg, &convert_init); - - if (!error) - { - mpeg2dec->convert = convert; - mpeg2dec->convert_arg = arg; - mpeg2dec->convert_id_size = convert_init.id_size; - mpeg2dec->convert_stride = 0; - } - - return error; -} - -int mpeg2_stride (mpeg2dec_t * mpeg2dec, int stride) -{ - if (!mpeg2dec->convert) - { - if (stride < (int) mpeg2dec->sequence.width) - stride = mpeg2dec->sequence.width; - - mpeg2dec->decoder.stride_frame = stride; - } - else - { - mpeg2_convert_init_t convert_init; - - stride = mpeg2dec->convert(MPEG2_CONVERT_STRIDE, NULL, - &mpeg2dec->sequence, stride, - mpeg2dec->convert_arg, - &convert_init); - - mpeg2dec->convert_id_size = convert_init.id_size; - mpeg2dec->convert_stride = stride; - } - - return stride; -} - -void mpeg2_set_buf (mpeg2dec_t * mpeg2dec, uint8_t * buf[MPEG2_COMPONENTS], void * id) -{ - mpeg2_fbuf_t * fbuf; - - if (mpeg2dec->custom_fbuf) - { - if (mpeg2dec->state == STATE_SEQUENCE) - { - mpeg2dec->fbuf[2] = mpeg2dec->fbuf[1]; - mpeg2dec->fbuf[1] = mpeg2dec->fbuf[0]; - } - - mpeg2_set_fbuf (mpeg2dec, (mpeg2dec->decoder.coding_type == - PIC_FLAG_CODING_TYPE_B)); - - fbuf = mpeg2dec->fbuf[0]; - } - else - { - fbuf = &mpeg2dec->fbuf_alloc[mpeg2dec->alloc_index].fbuf; - mpeg2dec->alloc_index_user = ++mpeg2dec->alloc_index; - } - - fbuf->buf[0] = buf[0]; -#if MPEG2_COLOR - fbuf->buf[1] = buf[1]; - fbuf->buf[2] = buf[2]; -#endif - - fbuf->id = id; -} - -void mpeg2_custom_fbuf (mpeg2dec_t * mpeg2dec, int custom_fbuf) -{ - mpeg2dec->custom_fbuf = custom_fbuf; -} - -void mpeg2_skip (mpeg2dec_t * mpeg2dec, int skip) -{ - mpeg2dec->first_decode_slice = 1; - mpeg2dec->nb_decode_slices = skip ? 0 : (0xb0 - 1); -} - -void mpeg2_slice_region (mpeg2dec_t * mpeg2dec, int start, int end) -{ - start = (start < 1) ? 1 : (start > 0xb0) ? 0xb0 : start; - end = (end < start) ? start : (end > 0xb0) ? 0xb0 : end; - mpeg2dec->first_decode_slice = start; - mpeg2dec->nb_decode_slices = end - start; -} - -void mpeg2_tag_picture (mpeg2dec_t * mpeg2dec, uint32_t tag, uint32_t tag2) -{ - mpeg2dec->tag_previous = mpeg2dec->tag_current; - mpeg2dec->tag2_previous = mpeg2dec->tag2_current; - mpeg2dec->tag_current = tag; - mpeg2dec->tag2_current = tag2; - mpeg2dec->num_tags++; - mpeg2dec->bytes_since_tag = 0; -} - -void mpeg2_reset (mpeg2dec_t * mpeg2dec, int full_reset) -{ - mpeg2dec->buf_start = mpeg2dec->buf_end = NULL; - mpeg2dec->num_tags = 0; - mpeg2dec->shift = 0xffffff00; - mpeg2dec->code = 0xb4; - mpeg2dec->action = mpeg2_seek_header; - mpeg2dec->state = STATE_INVALID; - mpeg2dec->first = 1; - - mpeg2_reset_info(&mpeg2dec->info); - mpeg2dec->info.gop = NULL; - mpeg2dec->info.user_data = NULL; - mpeg2dec->info.user_data_len = 0; - - if (full_reset) - { - mpeg2dec->info.sequence = NULL; - mpeg2_header_state_init (mpeg2dec); - } -} - -mpeg2dec_t * mpeg2_init (void) -{ - mpeg2dec_t * mpeg2dec; - - mpeg2_idct_init (); - - mpeg2dec = (mpeg2dec_t *)mpeg2_bufalloc(sizeof (mpeg2dec_t), - MPEG2_ALLOC_MPEG2DEC); - if (mpeg2dec == NULL) - return NULL; - - mpeg2dec->decoder.DCTblock = static_dct_block; - - rb->memset (mpeg2dec->decoder.DCTblock, 0, DCT_BLOCKSIZE); - - DEBUGF("DCTblock: %p\n", mpeg2dec->decoder.DCTblock); - - mpeg2dec->chunk_buffer = (uint8_t *)mpeg2_bufalloc(BUFFER_SIZE + 4, - MPEG2_ALLOC_CHUNK); - - mpeg2dec->sequence.width = (unsigned)-1; - mpeg2_reset (mpeg2dec, 1); - - return mpeg2dec; -} - -void mpeg2_close (mpeg2dec_t * mpeg2dec) -{ - mpeg2_header_state_init (mpeg2dec); -#if 0 - /* These are dedicated buffers in rockbox */ - mpeg2_free (mpeg2dec->chunk_buffer); - mpeg2_free (mpeg2dec); -#endif -} -- cgit v1.2.3