From 19fb234e4af1ff9f58ff2fdd604ac6f6bb87ad6b Mon Sep 17 00:00:00 2001 From: Jason Garrett-Glaser Date: Fri, 14 Jan 2011 21:34:25 +0000 Subject: H.264: split luma dc idct out and implement MMX/SSE2 versions About 2.5x the speed. NOTE: the way that the asm code handles large qmuls is a bit suboptimal. If x264-style dequant was used (separate shift and qmul values), it might be possible to get some extra speed. Originally committed as revision 26336 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavcodec/h264dsp.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'libavcodec/h264dsp.h') diff --git a/libavcodec/h264dsp.h b/libavcodec/h264dsp.h index 3d32a9c18f..9f16480d56 100644 --- a/libavcodec/h264dsp.h +++ b/libavcodec/h264dsp.h @@ -65,11 +65,13 @@ typedef struct H264DSPContext{ void (*h264_idct8_add)(uint8_t *dst/*align 8*/, DCTELEM *block/*align 16*/, int stride); void (*h264_idct_dc_add)(uint8_t *dst/*align 4*/, DCTELEM *block/*align 16*/, int stride); void (*h264_idct8_dc_add)(uint8_t *dst/*align 8*/, DCTELEM *block/*align 16*/, int stride); + void (*h264_dct)(DCTELEM block[4][4]); void (*h264_idct_add16)(uint8_t *dst/*align 16*/, const int *blockoffset, DCTELEM *block/*align 16*/, int stride, const uint8_t nnzc[6*8]); void (*h264_idct8_add4)(uint8_t *dst/*align 16*/, const int *blockoffset, DCTELEM *block/*align 16*/, int stride, const uint8_t nnzc[6*8]); void (*h264_idct_add8)(uint8_t **dst/*align 16*/, const int *blockoffset, DCTELEM *block/*align 16*/, int stride, const uint8_t nnzc[6*8]); void (*h264_idct_add16intra)(uint8_t *dst/*align 16*/, const int *blockoffset, DCTELEM *block/*align 16*/, int stride, const uint8_t nnzc[6*8]); + void (*h264_luma_dc_dequant_idct)(DCTELEM *output, DCTELEM *input/*align 16*/, int qmul); }H264DSPContext; void ff_h264dsp_init(H264DSPContext *c); -- cgit v1.2.3