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Code Issues Releases Activity

VC-1/WMV: Remove redundant ff_init_block_index() calls.

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These are only supposed to be called once per row, not once per macroblock.
~1.5% faster according to oprofile.

Originally committed as revision 19213 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Jason Garrett-Glaser 2009-06-17 05:54:42 +00:00
parent 0b389aee4d
commit 351653a51e
1 changed files with 12 additions and 8 deletions
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20
libavcodec/vc1dec.c
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@ -2617,8 +2617,9 @@ static void vc1_decode_i_blocks(VC1Context *v)
s->mb_intra = 1;
s->first_slice_line = 1;
for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
ff_init_block_index(s);
s->mb_x = 0;
ff_init_block_index(s);
for(; s->mb_x < s->mb_width; s->mb_x++) {
ff_update_block_index(s);
s->dsp.clear_blocks(s->block[0]);
mb_pos = s->mb_x + s->mb_y * s->mb_width;
@ -2730,8 +2731,9 @@ static void vc1_decode_i_blocks_adv(VC1Context *v)
s->mb_intra = 1;
s->first_slice_line = 1;
for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
ff_init_block_index(s);
s->mb_x = 0;
ff_init_block_index(s);
for(;s->mb_x < s->mb_width; s->mb_x++) {
ff_update_block_index(s);
s->dsp.clear_blocks(s->block[0]);
mb_pos = s->mb_x + s->mb_y * s->mb_stride;
@ -2849,8 +2851,9 @@ static void vc1_decode_p_blocks(VC1Context *v)
s->first_slice_line = 1;
memset(v->cbp_base, 0, sizeof(v->cbp_base[0])*2*s->mb_stride);
for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
ff_init_block_index(s);
s->mb_x = 0;
ff_init_block_index(s);
for(; s->mb_x < s->mb_width; s->mb_x++) {
ff_update_block_index(s);
vc1_decode_p_mb(v);
@ -2898,8 +2901,9 @@ static void vc1_decode_b_blocks(VC1Context *v)
s->first_slice_line = 1;
for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
ff_init_block_index(s);
s->mb_x = 0;
ff_init_block_index(s);
for(; s->mb_x < s->mb_width; s->mb_x++) {
ff_update_block_index(s);
vc1_decode_b_mb(v);