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Diffstat (limited to 'ffmpeg/libavcodec/mpegaudio_parser.c')
-rw-r--r--ffmpeg/libavcodec/mpegaudio_parser.c114
1 files changed, 0 insertions, 114 deletions
diff --git a/ffmpeg/libavcodec/mpegaudio_parser.c b/ffmpeg/libavcodec/mpegaudio_parser.c
deleted file mode 100644
index 4081936..0000000
--- a/ffmpeg/libavcodec/mpegaudio_parser.c
+++ /dev/null
@@ -1,114 +0,0 @@
-/*
- * MPEG Audio parser
- * Copyright (c) 2003 Fabrice Bellard
- * Copyright (c) 2003 Michael Niedermayer
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include "parser.h"
-#include "mpegaudiodecheader.h"
-#include "libavutil/common.h"
-
-
-typedef struct MpegAudioParseContext {
- ParseContext pc;
- int frame_size;
- uint32_t header;
- int header_count;
- int no_bitrate;
-} MpegAudioParseContext;
-
-#define MPA_HEADER_SIZE 4
-
-/* header + layer + bitrate + freq + lsf/mpeg25 */
-#define SAME_HEADER_MASK \
- (0xffe00000 | (3 << 17) | (3 << 10) | (3 << 19))
-
-static int mpegaudio_parse(AVCodecParserContext *s1,
- AVCodecContext *avctx,
- const uint8_t **poutbuf, int *poutbuf_size,
- const uint8_t *buf, int buf_size)
-{
- MpegAudioParseContext *s = s1->priv_data;
- ParseContext *pc = &s->pc;
- uint32_t state= pc->state;
- int i;
- int next= END_NOT_FOUND;
-
- for(i=0; i<buf_size; ){
- if(s->frame_size){
- int inc= FFMIN(buf_size - i, s->frame_size);
- i += inc;
- s->frame_size -= inc;
- state = 0;
-
- if(!s->frame_size){
- next= i;
- break;
- }
- }else{
- while(i<buf_size){
- int ret, sr, channels, bit_rate, frame_size;
-
- state= (state<<8) + buf[i++];
-
- ret = avpriv_mpa_decode_header(avctx, state, &sr, &channels, &frame_size, &bit_rate);
- if (ret < 4) {
- if (i > 4)
- s->header_count = -2;
- } else {
- if((state&SAME_HEADER_MASK) != (s->header&SAME_HEADER_MASK) && s->header)
- s->header_count= -3;
- s->header= state;
- s->header_count++;
- s->frame_size = ret-4;
-
- if (s->header_count > 0) {
- avctx->sample_rate= sr;
- avctx->channels = channels;
- s1->duration = frame_size;
- if (s->no_bitrate || !avctx->bit_rate) {
- s->no_bitrate = 1;
- avctx->bit_rate += (bit_rate - avctx->bit_rate) / s->header_count;
- }
- }
- break;
- }
- }
- }
- }
-
- pc->state= state;
- if (ff_combine_frame(pc, next, &buf, &buf_size) < 0) {
- *poutbuf = NULL;
- *poutbuf_size = 0;
- return buf_size;
- }
-
- *poutbuf = buf;
- *poutbuf_size = buf_size;
- return next;
-}
-
-
-AVCodecParser ff_mpegaudio_parser = {
- .codec_ids = { AV_CODEC_ID_MP1, AV_CODEC_ID_MP2, AV_CODEC_ID_MP3 },
- .priv_data_size = sizeof(MpegAudioParseContext),
- .parser_parse = mpegaudio_parse,
- .parser_close = ff_parse_close,
-};