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add AltiVec implementation of weight_h264_pixels(16|8)x(16|8|4)

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Patch by David Conrad %lessen42 A gmail P com%

Originally committed as revision 16458 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
David Conrad 2009-01-06 22:29:26 +00:00 committed by Guillaume Poirier
parent 094d9df72e
commit 8b2bc85f29
1 changed files with 52 additions and 0 deletions
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52
libavcodec/ppc/h264_altivec.c
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@ -935,6 +935,50 @@ static void h264_h_loop_filter_luma_altivec(uint8_t *pix, int stride, int alpha,
write16x4(pix-2, stride, line1, line2, line3, line4);
}
static av_always_inline
void weight_h264_WxH_altivec(uint8_t *block, int stride, int log2_denom, int weight, int offset, int w, int h)
{
int y, aligned;
vec_u8 vblock;
vec_s16 vtemp, vweight, voffset, v0, v1;
vec_u16 vlog2_denom;
DECLARE_ALIGNED_16(int32_t, temp[4]);
LOAD_ZERO;
offset <<= log2_denom;
if(log2_denom) offset += 1<<(log2_denom-1);
temp[0] = log2_denom;
temp[1] = weight;
temp[2] = offset;
vtemp = (vec_s16)vec_ld(0, temp);
vlog2_denom = (vec_u16)vec_splat(vtemp, 1);
vweight = vec_splat(vtemp, 3);
voffset = vec_splat(vtemp, 5);
aligned = !((unsigned long)block & 0xf);
for (y=0; y<h; y++) {
vblock = vec_ld(0, block);
v0 = (vec_s16)vec_mergeh(zero_u8v, vblock);
v1 = (vec_s16)vec_mergel(zero_u8v, vblock);
if (w == 16 || aligned) {
v0 = vec_mladd(v0, vweight, zero_s16v);
v0 = vec_adds(v0, voffset);
v0 = vec_sra(v0, vlog2_denom);
}
if (w == 16 || !aligned) {
v1 = vec_mladd(v1, vweight, zero_s16v);
v1 = vec_adds(v1, voffset);
v1 = vec_sra(v1, vlog2_denom);
}
vblock = vec_packsu(v0, v1);
vec_st(vblock, 0, block);
block += stride;
}
}
static av_always_inline
void biweight_h264_WxH_altivec(uint8_t *dst, uint8_t *src, int stride, int log2_denom,
@ -1002,6 +1046,9 @@ void biweight_h264_WxH_altivec(uint8_t *dst, uint8_t *src, int stride, int log2_
}
#define H264_WEIGHT(W,H) \
static void ff_weight_h264_pixels ## W ## x ## H ## _altivec(uint8_t *block, int stride, int log2_denom, int weight, int offset){ \
weight_h264_WxH_altivec(block, stride, log2_denom, weight, offset, W, H); \
}\
static void ff_biweight_h264_pixels ## W ## x ## H ## _altivec(uint8_t *dst, uint8_t *src, int stride, int log2_denom, int weightd, int weights, int offset){ \
biweight_h264_WxH_altivec(dst, src, stride, log2_denom, weightd, weights, offset, W, H); \
}
@ -1051,6 +1098,11 @@ void dsputil_h264_init_ppc(DSPContext* c, AVCodecContext *avctx) {
dspfunc(avg_h264_qpel, 0, 16);
#undef dspfunc
c->weight_h264_pixels_tab[0] = ff_weight_h264_pixels16x16_altivec;
c->weight_h264_pixels_tab[1] = ff_weight_h264_pixels16x8_altivec;
c->weight_h264_pixels_tab[2] = ff_weight_h264_pixels8x16_altivec;
c->weight_h264_pixels_tab[3] = ff_weight_h264_pixels8x8_altivec;
c->weight_h264_pixels_tab[4] = ff_weight_h264_pixels8x4_altivec;
c->biweight_h264_pixels_tab[0] = ff_biweight_h264_pixels16x16_altivec;
c->biweight_h264_pixels_tab[1] = ff_biweight_h264_pixels16x8_altivec;
c->biweight_h264_pixels_tab[2] = ff_biweight_h264_pixels8x16_altivec;