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VP8 bilinear filter

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Originally committed as revision 23813 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
David Conrad
2010-06-27 01:46:29 +00:00
parent a02bb835ac
commit 0ef1dbedcb
3 changed files with 85 additions and 8 deletions
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70
libavcodec/vp8dsp.c
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@@ -348,6 +348,61 @@ VP8_EPEL_HV(16, FILTER_6TAP, FILTER_6TAP, h6v6)
VP8_EPEL_HV(8, FILTER_6TAP, FILTER_6TAP, h6v6)
VP8_EPEL_HV(4, FILTER_6TAP, FILTER_6TAP, h6v6)
#define VP8_BILINEAR(SIZE) \
static void put_vp8_bilinear ## SIZE ## _h_c(uint8_t *dst, int stride, uint8_t *src, int s2, int h, int mx, int my) \
{ \
int a = 8-mx, b = mx; \
int x, y; \
\
for (y = 0; y < h; y++) { \
for (x = 0; x < SIZE; x++) \
dst[x] = (a*src[x] + b*src[x+1] + 4) >> 3; \
dst += stride; \
src += stride; \
} \
} \
static void put_vp8_bilinear ## SIZE ## _v_c(uint8_t *dst, int stride, uint8_t *src, int s2, int h, int mx, int my) \
{ \
int c = 8-my, d = my; \
int x, y; \
\
for (y = 0; y < h; y++) { \
for (x = 0; x < SIZE; x++) \
dst[x] = (c*src[x] + d*src[x+stride] + 4) >> 3; \
dst += stride; \
src += stride; \
} \
} \
\
static void put_vp8_bilinear ## SIZE ## _hv_c(uint8_t *dst, int stride, uint8_t *src, int s2, int h, int mx, int my) \
{ \
int a = 8-mx, b = mx; \
int c = 8-my, d = my; \
int x, y; \
uint8_t tmp_array[(2*SIZE+1)*SIZE]; \
uint8_t *tmp = tmp_array; \
\
for (y = 0; y < h+1; y++) { \
for (x = 0; x < SIZE; x++) \
tmp[x] = (a*src[x] + b*src[x+1] + 4) >> 3; \
tmp += SIZE; \
src += stride; \
} \
\
tmp = tmp_array; \
\
for (y = 0; y < h; y++) { \
for (x = 0; x < SIZE; x++) \
dst[x] = (c*tmp[x] + d*tmp[x+SIZE] + 4) >> 3; \
dst += stride; \
tmp += SIZE; \
} \
}
VP8_BILINEAR(16)
VP8_BILINEAR(8)
VP8_BILINEAR(4)
#define VP8_MC_FUNC(IDX, SIZE) \
dsp->put_vp8_epel_pixels_tab[IDX][0][0] = put_vp8_pixels ## SIZE ## _c; \
dsp->put_vp8_epel_pixels_tab[IDX][0][1] = put_vp8_epel ## SIZE ## _h4_c; \
@@ -359,6 +414,17 @@ VP8_EPEL_HV(4, FILTER_6TAP, FILTER_6TAP, h6v6)
dsp->put_vp8_epel_pixels_tab[IDX][2][1] = put_vp8_epel ## SIZE ## _h4v6_c; \
dsp->put_vp8_epel_pixels_tab[IDX][2][2] = put_vp8_epel ## SIZE ## _h6v6_c
#define VP8_BILINEAR_MC_FUNC(IDX, SIZE) \
dsp->put_vp8_bilinear_pixels_tab[IDX][0][0] = put_vp8_pixels ## SIZE ## _c; \
dsp->put_vp8_bilinear_pixels_tab[IDX][0][1] = put_vp8_bilinear ## SIZE ## _h_c; \
dsp->put_vp8_bilinear_pixels_tab[IDX][0][2] = put_vp8_bilinear ## SIZE ## _h_c; \
dsp->put_vp8_bilinear_pixels_tab[IDX][1][0] = put_vp8_bilinear ## SIZE ## _v_c; \
dsp->put_vp8_bilinear_pixels_tab[IDX][1][1] = put_vp8_bilinear ## SIZE ## _hv_c; \
dsp->put_vp8_bilinear_pixels_tab[IDX][1][2] = put_vp8_bilinear ## SIZE ## _hv_c; \
dsp->put_vp8_bilinear_pixels_tab[IDX][2][0] = put_vp8_bilinear ## SIZE ## _v_c; \
dsp->put_vp8_bilinear_pixels_tab[IDX][2][1] = put_vp8_bilinear ## SIZE ## _hv_c; \
dsp->put_vp8_bilinear_pixels_tab[IDX][2][2] = put_vp8_bilinear ## SIZE ## _hv_c
av_cold void ff_vp8dsp_init(VP8DSPContext *dsp)
{
dsp->vp8_luma_dc_wht = vp8_luma_dc_wht_c;
@@ -381,4 +447,8 @@ av_cold void ff_vp8dsp_init(VP8DSPContext *dsp)
VP8_MC_FUNC(0, 16);
VP8_MC_FUNC(1, 8);
VP8_MC_FUNC(2, 4);
VP8_BILINEAR_MC_FUNC(0, 16);
VP8_BILINEAR_MC_FUNC(1, 8);
VP8_BILINEAR_MC_FUNC(2, 4);
}