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h264 hurry up fix and a tiny cabac clean patch by (Laurent Aimar <fenrir at via dot ecp dot fr>) 

Originally committed as revision 3043 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Laurent Aimar 2004-04-23 19:36:52 +00:00 committed by Michael Niedermayer
parent f4f3223ffd
commit 693399ba55
1 changed files with 24 additions and 26 deletions
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50
libavcodec/h264.c
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@ -296,6 +296,7 @@ typedef struct H264Context{
/* 0x100 -> non null luma_dc, 0x80/0x40 -> non null chroma_dc (cb/cr), 0x?0 -> chroma_cbp(0,1,2), 0x0? luma_cbp */
uint16_t *cbp_table;
/* chroma_pred_mode for i4x4 or i16x16, else 0 */
uint8_t *chroma_pred_mode_table;
int last_qscale_diff;
int16_t (*mvd_table[2])[2];
@ -3899,16 +3900,12 @@ static int decode_cabac_mb_chroma_pre_mode( H264Context *h) {
int ctx = 0;
if( s->mb_x > 0 &&
( IS_INTRA4x4( s->current_picture.mb_type[mba_xy] ) || IS_INTRA16x16( s->current_picture.mb_type[mba_xy] ) ) &&
h->chroma_pred_mode_table[mba_xy] != 0 ) {
/* No need to test for IS_INTRA4x4 and IS_INTRA16x16, as we set chroma_pred_mode_table to 0 */
if( s->mb_x > 0 && h->chroma_pred_mode_table[mba_xy] != 0 )
ctx++;
}
if( s->mb_y > 0 &&
( IS_INTRA4x4( s->current_picture.mb_type[mbb_xy] ) || IS_INTRA16x16( s->current_picture.mb_type[mbb_xy] ) ) &&
h->chroma_pred_mode_table[mbb_xy] != 0 ) {
if( s->mb_y > 0 && h->chroma_pred_mode_table[mbb_xy] != 0 )
ctx++;
}
if( get_cabac( &h->cabac, &h->cabac_state[64+ctx] ) == 0 )
return 0;
@ -3962,15 +3959,16 @@ static int decode_cabac_mb_cbp_luma( H264Context *h) {
else if( s->mb_y > 0 )
mbb_xy = mb_xy - s->mb_stride;
/* No need to test for skip as we put 0 for skip block */
if( mba_xy >= 0 ) {
int i8x8a = block_idx_xy[(x-1)&0x03][y]/4;
if( IS_SKIP( s->current_picture.mb_type[mba_xy] ) || ((h->cbp_table[mba_xy] >> i8x8a)&0x01) == 0 )
if( ((h->cbp_table[mba_xy] >> i8x8a)&0x01) == 0 )
ctx++;
}
if( mbb_xy >= 0 ) {
int i8x8b = block_idx_xy[x][(y-1)&0x03]/4;
if( IS_SKIP( s->current_picture.mb_type[mbb_xy] ) || ((h->cbp_table[mbb_xy] >> i8x8b)&0x01) == 0 )
if( ((h->cbp_table[mbb_xy] >> i8x8b)&0x01) == 0 )
ctx += 2;
}
@ -3987,12 +3985,13 @@ static int decode_cabac_mb_cbp_chroma( H264Context *h) {
int ctx;
int cbp_a, cbp_b;
if( s->mb_x > 0 && !IS_SKIP( s->current_picture.mb_type[mb_xy-1] ) )
/* No need to test for skip */
if( s->mb_x > 0 )
cbp_a = (h->cbp_table[mb_xy-1]>>4)&0x03;
else
cbp_a = -1;
if( s->mb_y > 0 && !IS_SKIP( s->current_picture.mb_type[mb_xy-s->mb_stride] ) )
if( s->mb_y > 0 )
cbp_b = (h->cbp_table[mb_xy-s->mb_stride]>>4)&0x03;
else
cbp_b = -1;
@ -4146,11 +4145,11 @@ static int get_cabac_cbf_ctx( H264Context *h, int cat, int idx ) {
else if( s->mb_y > 0 )
mbb_xy = mb_xy - s->mb_stride;
/* No need to test for skip */
if( mba_xy >= 0 ) {
i8x8a = block_idx_xy[(x-1)&0x03][y]/4;
if( !IS_SKIP(s->current_picture.mb_type[mba_xy] ) &&
!IS_INTRA_PCM(s->current_picture.mb_type[mba_xy] ) &&
if( !IS_INTRA_PCM(s->current_picture.mb_type[mba_xy] ) &&
((h->cbp_table[mba_xy]&0x0f)>>i8x8a))
nza = h->non_zero_count_cache[scan8[idx] - 1];
}
@ -4158,8 +4157,7 @@ static int get_cabac_cbf_ctx( H264Context *h, int cat, int idx ) {
if( mbb_xy >= 0 ) {
i8x8b = block_idx_xy[x][(y-1)&0x03]/4;
if( !IS_SKIP(s->current_picture.mb_type[mbb_xy] ) &&
!IS_INTRA_PCM(s->current_picture.mb_type[mbb_xy] ) &&
if( !IS_INTRA_PCM(s->current_picture.mb_type[mbb_xy] ) &&
((h->cbp_table[mbb_xy]&0x0f)>>i8x8b))
nzb = h->non_zero_count_cache[scan8[idx] - 8];
}
@ -4167,16 +4165,14 @@ static int get_cabac_cbf_ctx( H264Context *h, int cat, int idx ) {
if( s->mb_x > 0 ) {
mba_xy = mb_xy - 1;
if( !IS_SKIP(s->current_picture.mb_type[mba_xy] ) &&
!IS_INTRA_PCM(s->current_picture.mb_type[mba_xy] ) &&
if( !IS_INTRA_PCM(s->current_picture.mb_type[mba_xy] ) &&
(h->cbp_table[mba_xy]&0x30) )
nza = (h->cbp_table[mba_xy]>>(6+idx))&0x01;
}
if( s->mb_y > 0 ) {
mbb_xy = mb_xy - s->mb_stride;
if( !IS_SKIP(s->current_picture.mb_type[mbb_xy] ) &&
!IS_INTRA_PCM(s->current_picture.mb_type[mbb_xy] ) &&
if( !IS_INTRA_PCM(s->current_picture.mb_type[mbb_xy] ) &&
(h->cbp_table[mbb_xy]&0x30) )
nzb = (h->cbp_table[mbb_xy]>>(6+idx))&0x01;
}
@ -4193,13 +4189,11 @@ static int get_cabac_cbf_ctx( H264Context *h, int cat, int idx ) {
mbb_xy = mb_xy - s->mb_stride;
if( mba_xy >= 0 &&
!IS_SKIP(s->current_picture.mb_type[mba_xy] ) &&
!IS_INTRA_PCM(s->current_picture.mb_type[mba_xy] ) &&
(h->cbp_table[mba_xy]&0x30) == 0x20 )
nza = h->non_zero_count_cache[scan8[16+idx] - 1];
if( mbb_xy >= 0 &&
!IS_SKIP(s->current_picture.mb_type[mbb_xy] ) &&
!IS_INTRA_PCM(s->current_picture.mb_type[mbb_xy] ) &&
(h->cbp_table[mbb_xy]&0x30) == 0x20 )
nzb = h->non_zero_count_cache[scan8[16+idx] - 8];
@ -4393,6 +4387,7 @@ static int decode_mb_cabac(H264Context *h) {
s->current_picture.qscale_table[mb_xy]= s->qscale;
h->slice_table[ mb_xy ]= h->slice_num;
h->cbp_table[mb_xy] = 0;
h->chroma_pred_mode_table[mb_xy] = 0;
h->last_qscale_diff = 0;
h->prev_mb_skiped= 1;
@ -4435,6 +4430,7 @@ decode_intra_mb:
if(IS_INTRA_PCM(mb_type)) {
/* TODO */
h->cbp_table[mb_xy] = 0xf +4*2;
h->chroma_pred_mode_table[mb_xy] = 0;
s->current_picture.qscale_table[mb_xy]= s->qscale;
return -1;
}
@ -4624,8 +4620,10 @@ decode_intra_mb:
}
}
if( IS_INTER( mb_type ) )
if( IS_INTER( mb_type ) ) {
h->chroma_pred_mode_table[mb_xy] = 0;
write_back_motion( h, mb_type );
}
if( !IS_INTRA16x16( mb_type ) ) {
cbp = decode_cabac_mb_cbp_luma( h );
@ -5582,7 +5580,7 @@ static int decode_nal_units(H264Context *h, uint8_t *buf, int buf_size){
buf_index += consumed;
if(h->nal_ref_idc < s->hurry_up)
if( s->hurry_up == 1 && h->nal_ref_idc == 0 )
continue;
switch(h->nal_unit_type){
@ -5595,7 +5593,7 @@ static int decode_nal_units(H264Context *h, uint8_t *buf, int buf_size){
s->data_partitioning = 0;
if(decode_slice_header(h) < 0) return -1;
if(h->redundant_pic_count==0)
if(h->redundant_pic_count==0 && s->hurry_up < 5 )
decode_slice(h);
break;
case NAL_DPA:
@ -5614,7 +5612,7 @@ static int decode_nal_units(H264Context *h, uint8_t *buf, int buf_size){
init_get_bits(&h->inter_gb, ptr, bit_length);
h->inter_gb_ptr= &h->inter_gb;
if(h->redundant_pic_count==0 && h->intra_gb_ptr && s->data_partitioning)
if(h->redundant_pic_count==0 && h->intra_gb_ptr && s->data_partitioning && s->hurry_up < 5 )
decode_slice(h);
break;
case NAL_SEI: