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export DCT coefficients patch by (Wolfgang Hesseler <wolfgang.hesseler at imk dot fraunhofer dot de>)

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Originally committed as revision 2816 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Wolfgang Hesseler 2004-02-25 18:29:17 +00:00 committed by Michael Niedermayer
parent 5a815088d3
commit 8289c6faa8
2 changed files with 22 additions and 2 deletions
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11
libavcodec/avcodec.h
View File

@ -17,7 +17,7 @@ extern "C" {
#define FFMPEG_VERSION_INT 0x000408
#define FFMPEG_VERSION "0.4.8"
#define LIBAVCODEC_BUILD 4704
#define LIBAVCODEC_BUILD 4705
#define LIBAVCODEC_VERSION_INT FFMPEG_VERSION_INT
#define LIBAVCODEC_VERSION FFMPEG_VERSION
@ -529,6 +529,13 @@ typedef struct AVPanScan{
* - decoding: set by lavc (before get_buffer() call))\
*/\
int buffer_hints;\
\
/**\
* DCT coeffitients\
* - encoding: unused\
* - decoding: set by lavc\
*/\
short *dct_coeff;\
#define FF_QSCALE_TYPE_MPEG1 0
#define FF_QSCALE_TYPE_MPEG2 1
@ -1138,7 +1145,7 @@ typedef struct AVCodecContext {
#define FF_DEBUG_MB_TYPE 8
#define FF_DEBUG_QP 16
#define FF_DEBUG_MV 32
//#define FF_DEBUG_VIS_MV 0x00000040
#define FF_DEBUG_DCT_COEFF 0x00000040
#define FF_DEBUG_SKIP 0x00000080
#define FF_DEBUG_STARTCODE 0x00000100
#define FF_DEBUG_PTS 0x00000200

13
libavcodec/mpegvideo.c
View File

@ -354,6 +354,9 @@ static int alloc_picture(MpegEncContext *s, Picture *pic, int shared){
}
pic->motion_subsample_log2= 3;
}
if(s->avctx->debug&FF_DEBUG_DCT_COEFF) {
CHECKED_ALLOCZ(pic->dct_coeff, 64 * mb_array_size * sizeof(DCTELEM)*6)
}
pic->qstride= s->mb_stride;
CHECKED_ALLOCZ(pic->pan_scan , 1 * sizeof(AVPanScan))
}
@ -385,6 +388,7 @@ static void free_picture(MpegEncContext *s, Picture *pic){
av_freep(&pic->mbskip_table);
av_freep(&pic->qscale_table);
av_freep(&pic->mb_type_base);
av_freep(&pic->dct_coeff);
av_freep(&pic->pan_scan);
pic->mb_type= NULL;
for(i=0; i<2; i++){
@ -3080,6 +3084,15 @@ void MPV_decode_mb(MpegEncContext *s, DCTELEM block[6][64])
mb_x = s->mb_x;
mb_y = s->mb_y;
if(s->avctx->debug&FF_DEBUG_DCT_COEFF) {
/* save DCT coefficients */
int i,j;
DCTELEM *dct = &s->current_picture.dct_coeff[mb_xy*64*6];
for(i=0; i<6; i++)
for(j=0; j<64; j++)
*dct++ = block[i][s->dsp.idct_permutation[j]];
}
s->current_picture.qscale_table[mb_xy]= s->qscale;
/* update DC predictors for P macroblocks */