move mp3_header_decompress bitstream filter in its own file

Originally committed as revision 9062 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 0 insertions, 80 deletions

diff --git a/libavcodec/bitstream_filter.c b/libavcodec/bitstream_filter.c
index 0148e3fb33..39dcc48718 100644
--- a/libavcodec/bitstream_filter.c
+++ b/libavcodec/bitstream_filter.c
@@ -20,7 +20,6 @@
 
 #include "avcodec.h"
 #include "mpegaudio.h"
-#include "mpegaudiodata.h"
 
 AVBitStreamFilter *first_bitstream_filter= NULL;
 
@@ -126,8 +125,6 @@ static int noise(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const ch
     return 1;
 }
 
-#define MP3_MASK 0xFFFE0CCF
-
 static int mp3_header_compress(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args,
                      uint8_t **poutbuf, int *poutbuf_size,
                      const uint8_t *buf, int buf_size, int keyframe){
@@ -185,75 +182,6 @@ output_unchanged:
     return 1;
 }
 
-static int mp3_header_decompress(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args,
-                     uint8_t **poutbuf, int *poutbuf_size,
-                     const uint8_t *buf, int buf_size, int keyframe){
-    uint32_t header;
-    int sample_rate= avctx->sample_rate;
-    int sample_rate_index=0;
-    int lsf, mpeg25, bitrate_index, frame_size;
-
-    header = AV_RB32(buf);
-    if(ff_mpa_check_header(header) >= 0){
-        *poutbuf= (uint8_t *) buf;
-        *poutbuf_size= buf_size;
-
-        return 0;
-    }
-
-    if(avctx->extradata_size != 15 || strcmp(avctx->extradata, "FFCMP3 0.0")){
-        av_log(avctx, AV_LOG_ERROR, "Extradata invalid %d\n", avctx->extradata_size);
-        return -1;
-    }
-
-    header= AV_RB32(avctx->extradata+11) & MP3_MASK;
-
-    lsf     = sample_rate < (24000+32000)/2;
-    mpeg25  = sample_rate < (12000+16000)/2;
-    sample_rate_index= (header>>10)&3;
-    sample_rate= ff_mpa_freq_tab[sample_rate_index] >> (lsf + mpeg25); //in case sample rate is a little off
-
-    for(bitrate_index=2; bitrate_index<30; bitrate_index++){
-        frame_size = ff_mpa_bitrate_tab[lsf][2][bitrate_index>>1];
-        frame_size = (frame_size * 144000) / (sample_rate << lsf) + (bitrate_index&1);
-        if(frame_size == buf_size + 4)
-            break;
-        if(frame_size == buf_size + 6)
-            break;
-    }
-    if(bitrate_index == 30){
-        av_log(avctx, AV_LOG_ERROR, "couldnt find bitrate_index\n");
-        return -1;
-    }
-
-    header |= (bitrate_index&1)<<9;
-    header |= (bitrate_index>>1)<<12;
-    header |= (frame_size == buf_size + 4)<<16; //FIXME actually set a correct crc instead of 0
-
-    *poutbuf_size= frame_size;
-    *poutbuf= av_malloc(frame_size + FF_INPUT_BUFFER_PADDING_SIZE);
-    memcpy(*poutbuf + frame_size - buf_size, buf, buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
-
-    if(avctx->channels==2){
-        uint8_t *p= *poutbuf + frame_size - buf_size;
-        if(lsf){
-            FFSWAP(int, p[1], p[2]);
-            header |= (p[1] & 0xC0)>>2;
-            p[1] &= 0x3F;
-        }else{
-            header |= p[1] & 0x30;
-            p[1] &= 0xCF;
-        }
-    }
-
-    (*poutbuf)[0]= header>>24;
-    (*poutbuf)[1]= header>>16;
-    (*poutbuf)[2]= header>> 8;
-    (*poutbuf)[3]= header    ;
-
-    return 1;
-}
-
 #ifdef CONFIG_DUMP_EXTRADATA_BSF
 AVBitStreamFilter dump_extradata_bsf={
     "dump_extra",
@@ -285,11 +213,3 @@ AVBitStreamFilter mp3_header_compress_bsf={
     mp3_header_compress,
 };
 #endif
-
-#ifdef CONFIG_MP3_HEADER_DECOMPRESS_BSF
-AVBitStreamFilter mp3_header_decompress_bsf={
-    "mp3decomp",
-    0,
-    mp3_header_decompress,
-};
-#endif