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synced 2024-08-14 21:35:06 +02:00
Use s->first_slice_line in checks instead of s->mb_y
Originally committed as revision 5684 to svn://svn.ffmpeg.org/ffmpeg/trunk
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88e2539b7e
commit
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@ -1698,13 +1698,13 @@ static inline int vc1_i_pred_dc(MpegEncContext *s, int overlap, int pq, int n,
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if (pq < 9 || !overlap)
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{
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/* Set outer values */
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if (!s->mb_y && (n!=2 && n!=3)) b=a=dcpred[scale];
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if (s->first_slice_line && (n!=2 && n!=3)) b=a=dcpred[scale];
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if (s->mb_x == 0 && (n!=1 && n!=3)) b=c=dcpred[scale];
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}
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else
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{
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/* Set outer values */
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if (!s->mb_y && (n!=2 && n!=3)) b=a=0;
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if (s->first_slice_line && (n!=2 && n!=3)) b=a=0;
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if (s->mb_x == 0 && (n!=1 && n!=3)) b=c=0;
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}
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@ -2438,7 +2438,7 @@ static int vc1_decode_p_mb(VC1Context *v, DCTELEM block[6][64])
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if(s->mb_intra) {
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/* check if prediction blocks A and C are available */
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v->a_avail = v->c_avail = 0;
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if(i == 2 || i == 3 || s->mb_y)
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if(i == 2 || i == 3 || !s->first_slice_line)
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v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
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if(i == 1 || i == 3 || s->mb_x)
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v->c_avail = v->mb_type[0][s->block_index[i] - 1];
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@ -2515,8 +2515,8 @@ static int vc1_decode_p_mb(VC1Context *v, DCTELEM block[6][64])
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int intrapred = 0;
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for(i=0; i<6; i++)
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if(is_intra[i]) {
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if(((s->mb_y || (i==2 || i==3)) && v->mb_type[0][s->block_index[i] - s->block_wrap[i]])
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|| ((s->mb_x || (i==1 || i==3)) && v->mb_type[0][s->block_index[i] - 1])) {
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if(((!s->first_slice_line || (i==2 || i==3)) && v->mb_type[0][s->block_index[i] - s->block_wrap[i]])
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|| ((s->mb_x || (i==1 || i==3)) && v->mb_type[0][s->block_index[i] - 1])) {
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intrapred = 1;
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break;
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}
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@ -2534,7 +2534,7 @@ static int vc1_decode_p_mb(VC1Context *v, DCTELEM block[6][64])
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if (is_intra[i]) {
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/* check if prediction blocks A and C are available */
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v->a_avail = v->c_avail = 0;
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if(i == 2 || i == 3 || s->mb_y)
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if(i == 2 || i == 3 || !s->first_slice_line)
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v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
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if(i == 1 || i == 3 || s->mb_x)
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v->c_avail = v->mb_type[0][s->block_index[i] - 1];
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@ -2620,6 +2620,7 @@ static void vc1_decode_i_blocks(VC1Context *v)
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//do frame decode
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s->mb_x = s->mb_y = 0;
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s->mb_intra = 1;
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s->first_slice_line = 1;
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ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
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for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
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for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
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@ -2678,6 +2679,7 @@ static void vc1_decode_i_blocks(VC1Context *v)
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}
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}
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ff_draw_horiz_band(s, s->mb_y * 16, 16);
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s->first_slice_line = 0;
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}
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}
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