diff options
| author | Jason Garrett-Glaser <darkshikari@gmail.com> | 2010-07-23 00:07:16 +0000 |
|---|---|---|
| committer | Jason Garrett-Glaser <darkshikari@gmail.com> | 2010-07-23 00:07:16 +0000 |
| commit | c25c7767085297e4f6bf4171391b615b5bddc281 (patch) | |
| tree | 4358d3117808ea7e00152aaf2a25d8bf4dcfe82d /libavcodec/x86/vp8dsp.asm | |
| parent | b74f70d64699907717ec1620f683d31840a9e4e3 (diff) | |
VP8: clear DCT blocks in iDCT instead of using clear_blocks.
~0.3% faster overall.
Originally committed as revision 24448 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/x86/vp8dsp.asm')
| -rw-r--r-- | libavcodec/x86/vp8dsp.asm | 26 |
1 files changed, 22 insertions, 4 deletions
diff --git a/libavcodec/x86/vp8dsp.asm b/libavcodec/x86/vp8dsp.asm index 843873167d..0cf4771abd 100644 --- a/libavcodec/x86/vp8dsp.asm +++ b/libavcodec/x86/vp8dsp.asm @@ -913,6 +913,7 @@ cglobal vp8_idct_dc_add_mmx, 3, 3 paddw mm0, [pw_4] pxor mm1, mm1 psraw mm0, 3 + movd [r1], mm1 psubw mm1, mm0 packuswb mm0, mm0 packuswb mm1, mm1 @@ -944,11 +945,12 @@ cglobal vp8_idct_dc_add_mmx, 3, 3 cglobal vp8_idct_dc_add_sse4, 3, 3, 6 ; load data movd xmm0, [r1] - lea r1, [r0+r2*2] pxor xmm1, xmm1 ; calculate DC paddw xmm0, [pw_4] + movd [r1], xmm1 + lea r1, [r0+r2*2] movd xmm2, [r0] movd xmm3, [r0+r2] movd xmm4, [r1] @@ -1005,14 +1007,26 @@ cglobal vp8_idct_dc_add_sse4, 3, 3, 6 %endmacro INIT_MMX -cglobal vp8_idct_add_mmx, 3, 3 +%macro VP8_IDCT_ADD 1 +cglobal vp8_idct_add_%1, 3, 3 ; load block data - movq m0, [r1] - movq m1, [r1+8] + movq m0, [r1+ 0] + movq m1, [r1+ 8] movq m2, [r1+16] movq m3, [r1+24] movq m6, [pw_20091] movq m7, [pw_17734] +%ifidn %1, sse + xorps xmm0, xmm0 + movaps [r1+ 0], xmm0 + movaps [r1+16], xmm0 +%else + pxor m4, m4 + movq [r1+ 0], m4 + movq [r1+ 8], m4 + movq [r1+16], m4 + movq [r1+24], m4 +%endif ; actual IDCT VP8_IDCT_TRANSFORM4x4_1D 0, 1, 2, 3, 4, 5 @@ -1028,6 +1042,10 @@ cglobal vp8_idct_add_mmx, 3, 3 STORE_DIFFx2 m2, m3, m6, m7, m4, 3, r1, r2 RET +%endmacro + +VP8_IDCT_ADD mmx +VP8_IDCT_ADD sse ;----------------------------------------------------------------------------- ; void vp8_luma_dc_wht_mmxext(DCTELEM block[4][4][16], DCTELEM dc[16]) |