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Code Issues Releases Activity

rv20 / h263 b frame fix

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Originally committed as revision 2628 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2003-12-21 20:06:59 +00:00
parent bed1707c9c
commit 8135f8df52
3 changed files with 35 additions and 25 deletions
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28
libavcodec/h263.c
View File

@ -1548,9 +1548,9 @@ int16_t *h263_pred_motion2(MpegEncContext * s, int block, int dir,
static const int off[4]= {2, 1, 1, -1};
wrap = s->b8_stride;
xy = s->mb_x + s->mb_y * wrap;
xy = 2*(s->mb_x + s->mb_y * wrap);
mot_val = s->current_picture.motion_val[0][dir] + xy;
mot_val = s->current_picture.motion_val[dir] + xy;
A = mot_val[ - 1];
/* special case for first (slice) line */
@ -3815,15 +3815,15 @@ int ff_h263_decode_mb(MpegEncContext *s,
} else if(s->pict_type==B_TYPE) {
int mb_type;
const int stride= s->b8_stride;
int16_t *mot_val0 = s->current_picture.motion_val[0][ s->mb_x + s->mb_y*stride ];
int16_t *mot_val1 = s->current_picture.motion_val[1][ s->mb_x + s->mb_y*stride ];
int16_t *mot_val0 = s->current_picture.motion_val[0][ 2*(s->mb_x + s->mb_y*stride) ];
int16_t *mot_val1 = s->current_picture.motion_val[1][ 2*(s->mb_x + s->mb_y*stride) ];
// const int mv_xy= s->mb_x + 1 + s->mb_y * s->mb_stride;
//FIXME ugly
mot_val0[0 ]= mot_val0[2 ]= mot_val0[0+stride]= mot_val0[2+stride]= 0;
mot_val0[1 ]= mot_val0[3 ]= mot_val0[1+stride]= mot_val0[3+stride]= 0;
mot_val1[0 ]= mot_val1[2 ]= mot_val1[0+stride]= mot_val1[2+stride]= 0;
mot_val1[1 ]= mot_val1[3 ]= mot_val1[1+stride]= mot_val1[3+stride]= 0;
mot_val0[0 ]= mot_val0[2 ]= mot_val0[0+2*stride]= mot_val0[2+2*stride]=
mot_val0[1 ]= mot_val0[3 ]= mot_val0[1+2*stride]= mot_val0[3+2*stride]=
mot_val1[0 ]= mot_val1[2 ]= mot_val1[0+2*stride]= mot_val1[2+2*stride]=
mot_val1[1 ]= mot_val1[3 ]= mot_val1[1+2*stride]= mot_val1[3+2*stride]= 0;
do{
mb_type= get_vlc2(&s->gb, h263_mbtype_b_vlc.table, H263_MBTYPE_B_VLC_BITS, 2);
@ -3877,22 +3877,24 @@ int ff_h263_decode_mb(MpegEncContext *s,
mx = h263_decode_motion(s, mx, 1);
my = h263_decode_motion(s, my, 1);
s->mv[0][0][0] = mx;
s->mv[0][0][1] = my;
mot_val[0 ]= mot_val[2 ]= mot_val[0+stride]= mot_val[2+stride]= mx;
mot_val[1 ]= mot_val[3 ]= mot_val[1+stride]= mot_val[3+stride]= my;
mot_val[0 ]= mot_val[2 ]= mot_val[0+2*stride]= mot_val[2+2*stride]= mx;
mot_val[1 ]= mot_val[3 ]= mot_val[1+2*stride]= mot_val[3+2*stride]= my;
}
if(USES_LIST(mb_type, 1)){
int16_t *mot_val= h263_pred_motion2(s, 0, 1, &mx, &my);
s->mv_dir |= MV_DIR_BACKWARD;
mx = h263_decode_motion(s, mx, 1);
my = h263_decode_motion(s, my, 1);
s->mv[1][0][0] = mx;
s->mv[1][0][1] = my;
mot_val[0 ]= mot_val[2 ]= mot_val[0+stride]= mot_val[2+stride]= mx;
mot_val[1 ]= mot_val[3 ]= mot_val[1+stride]= mot_val[3+stride]= my;
mot_val[0 ]= mot_val[2 ]= mot_val[0+2*stride]= mot_val[2+2*stride]= mx;
mot_val[1 ]= mot_val[3 ]= mot_val[1+2*stride]= mot_val[3+2*stride]= my;
}
}

18
libavcodec/h263data.h
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@ -51,15 +51,15 @@ static const int h263_mb_type_b_map[15]= {
MB_TYPE_DIRECT2 | MB_TYPE_L0L1,
MB_TYPE_DIRECT2 | MB_TYPE_L0L1 | MB_TYPE_CBP,
MB_TYPE_DIRECT2 | MB_TYPE_L0L1 | MB_TYPE_CBP | MB_TYPE_QUANT,
MB_TYPE_L0,
MB_TYPE_L0 | MB_TYPE_CBP,
MB_TYPE_L0 | MB_TYPE_CBP | MB_TYPE_QUANT,
MB_TYPE_L1,
MB_TYPE_L1 | MB_TYPE_CBP,
MB_TYPE_L1 | MB_TYPE_CBP | MB_TYPE_QUANT,
MB_TYPE_L0L1,
MB_TYPE_L0L1 | MB_TYPE_CBP,
MB_TYPE_L0L1 | MB_TYPE_CBP | MB_TYPE_QUANT,
MB_TYPE_L0 | MB_TYPE_16x16,
MB_TYPE_L0 | MB_TYPE_CBP | MB_TYPE_16x16,
MB_TYPE_L0 | MB_TYPE_CBP | MB_TYPE_QUANT | MB_TYPE_16x16,
MB_TYPE_L1 | MB_TYPE_16x16,
MB_TYPE_L1 | MB_TYPE_CBP | MB_TYPE_16x16,
MB_TYPE_L1 | MB_TYPE_CBP | MB_TYPE_QUANT | MB_TYPE_16x16,
MB_TYPE_L0L1 | MB_TYPE_16x16,
MB_TYPE_L0L1 | MB_TYPE_CBP | MB_TYPE_16x16,
MB_TYPE_L0L1 | MB_TYPE_CBP | MB_TYPE_QUANT | MB_TYPE_16x16,
0, //stuffing
MB_TYPE_INTRA | MB_TYPE_CBP,
MB_TYPE_INTRA | MB_TYPE_CBP | MB_TYPE_QUANT,

14
libavcodec/rv10.c
View File

@ -378,12 +378,17 @@ static int rv20_decode_picture_header(MpegEncContext *s)
if(s->avctx->has_b_frames){
if (get_bits(&s->gb, 1)){
av_log(s->avctx, AV_LOG_ERROR, "unknown bit3 set\n");
// av_log(s->avctx, AV_LOG_ERROR, "unknown bit3 set\n");
// return -1;
}
seq= get_bits(&s->gb, 15);
}else
mb_pos= get_bits(&s->gb, av_log2(s->mb_num-1)+1);
s->mb_x= mb_pos % s->mb_width;
s->mb_y= mb_pos / s->mb_width;
}else{
seq= get_bits(&s->gb, 8)*128;
mb_pos= ff_h263_decode_mba(s);
}
//printf("%d\n", seq);
seq |= s->time &~0x7FFF;
if(seq - s->time > 0x4000) seq -= 0x8000;
@ -404,7 +409,6 @@ static int rv20_decode_picture_header(MpegEncContext *s)
}
// printf("%d %d %d %d %d\n", seq, (int)s->time, (int)s->last_non_b_time, s->pp_time, s->pb_time);
mb_pos= ff_h263_decode_mba(s);
s->no_rounding= get_bits1(&s->gb);
s->f_code = 1;
@ -648,6 +652,10 @@ static int rv10_decode_frame(AVCodecContext *avctx,
if( rv10_decode_packet(avctx, buf, buf_size) < 0 )
return -1;
}
if(s->pict_type == B_TYPE){ //FIXME remove after cleaning mottion_val indexing
memset(s->current_picture.motion_val[0], 0, sizeof(int16_t)*2*(s->mb_width*2+2)*(s->mb_height*2+2));
}
if(s->mb_y>=s->mb_height){
MPV_frame_end(s);