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VP8: don't overread edges on fourtap MC. 

Fix C VP8 H+V MC functions which do two-dimensional 4/6-tap filters to
not overread beyond their edges if the second filter is 4-tap, since
the outer pixels aren't there anymore since
44002d8323.
(cherry picked from commit 22893e10ae)
This commit is contained in:
Ronald S. Bultje 2011-01-26 15:34:36 -05:00 committed by Michael Niedermayer
parent e7e2df27f8
commit e3c5395402
1 changed files with 38 additions and 38 deletions
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76
libavcodec/vp8dsp.c
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@ -331,8 +331,8 @@ PUT_PIXELS(4)
cm[(F[2]*src[x+0*stride] - F[1]*src[x-1*stride] + \ cm[(F[2]*src[x+0*stride] - F[1]*src[x-1*stride] + \
F[3]*src[x+1*stride] - F[4]*src[x+2*stride] + 64) >> 7] F[3]*src[x+1*stride] - F[4]*src[x+2*stride] + 64) >> 7]
#define VP8_EPEL_H(SIZE, FILTER, FILTERNAME) \ #define VP8_EPEL_H(SIZE, TAPS) \
static void put_vp8_epel ## SIZE ## _ ## FILTERNAME ## _c(uint8_t *dst, int dststride, uint8_t *src, int srcstride, int h, int mx, int my) \ static void put_vp8_epel ## SIZE ## _h ## TAPS ## _c(uint8_t *dst, int dststride, uint8_t *src, int srcstride, int h, int mx, int my) \
{ \ { \
const uint8_t *filter = subpel_filters[mx-1]; \ const uint8_t *filter = subpel_filters[mx-1]; \
uint8_t *cm = ff_cropTbl + MAX_NEG_CROP; \ uint8_t *cm = ff_cropTbl + MAX_NEG_CROP; \
@ -340,13 +340,13 @@ static void put_vp8_epel ## SIZE ## _ ## FILTERNAME ## _c(uint8_t *dst, int dsts
\ \
for (y = 0; y < h; y++) { \ for (y = 0; y < h; y++) { \
for (x = 0; x < SIZE; x++) \ for (x = 0; x < SIZE; x++) \
dst[x] = FILTER(src, filter, 1); \ dst[x] = FILTER_ ## TAPS ## TAP(src, filter, 1); \
dst += dststride; \ dst += dststride; \
src += srcstride; \ src += srcstride; \
} \ } \
} }
#define VP8_EPEL_V(SIZE, FILTER, FILTERNAME) \ #define VP8_EPEL_V(SIZE, TAPS) \
static void put_vp8_epel ## SIZE ## _ ## FILTERNAME ## _c(uint8_t *dst, int dststride, uint8_t *src, int srcstride, int h, int mx, int my) \ static void put_vp8_epel ## SIZE ## _v ## TAPS ## _c(uint8_t *dst, int dststride, uint8_t *src, int srcstride, int h, int mx, int my) \
{ \ { \
const uint8_t *filter = subpel_filters[my-1]; \ const uint8_t *filter = subpel_filters[my-1]; \
uint8_t *cm = ff_cropTbl + MAX_NEG_CROP; \ uint8_t *cm = ff_cropTbl + MAX_NEG_CROP; \
@ -354,63 +354,63 @@ static void put_vp8_epel ## SIZE ## _ ## FILTERNAME ## _c(uint8_t *dst, int dsts
\ \
for (y = 0; y < h; y++) { \ for (y = 0; y < h; y++) { \
for (x = 0; x < SIZE; x++) \ for (x = 0; x < SIZE; x++) \
dst[x] = FILTER(src, filter, srcstride); \ dst[x] = FILTER_ ## TAPS ## TAP(src, filter, srcstride); \
dst += dststride; \ dst += dststride; \
src += srcstride; \ src += srcstride; \
} \ } \
} }
#define VP8_EPEL_HV(SIZE, FILTERX, FILTERY, FILTERNAME) \ #define VP8_EPEL_HV(SIZE, HTAPS, VTAPS) \
static void put_vp8_epel ## SIZE ## _ ## FILTERNAME ## _c(uint8_t *dst, int dststride, uint8_t *src, int srcstride, int h, int mx, int my) \ static void put_vp8_epel ## SIZE ## _h ## HTAPS ## v ## VTAPS ## _c(uint8_t *dst, int dststride, uint8_t *src, int srcstride, int h, int mx, int my) \
{ \ { \
const uint8_t *filter = subpel_filters[mx-1]; \ const uint8_t *filter = subpel_filters[mx-1]; \
uint8_t *cm = ff_cropTbl + MAX_NEG_CROP; \ uint8_t *cm = ff_cropTbl + MAX_NEG_CROP; \
int x, y; \ int x, y; \
uint8_t tmp_array[(2*SIZE+5)*SIZE]; \ uint8_t tmp_array[(2*SIZE+VTAPS-1)*SIZE]; \
uint8_t *tmp = tmp_array; \ uint8_t *tmp = tmp_array; \
src -= 2*srcstride; \ src -= (2-(VTAPS==4))*srcstride; \
\ \
for (y = 0; y < h+5; y++) { \ for (y = 0; y < h+VTAPS-1; y++) { \
for (x = 0; x < SIZE; x++) \ for (x = 0; x < SIZE; x++) \
tmp[x] = FILTERX(src, filter, 1); \ tmp[x] = FILTER_ ## HTAPS ## TAP(src, filter, 1); \
tmp += SIZE; \ tmp += SIZE; \
src += srcstride; \ src += srcstride; \
} \ } \
\ \
tmp = tmp_array + 2*SIZE; \ tmp = tmp_array + (2-(VTAPS==4))*SIZE; \
filter = subpel_filters[my-1]; \ filter = subpel_filters[my-1]; \
\ \
for (y = 0; y < h; y++) { \ for (y = 0; y < h; y++) { \
for (x = 0; x < SIZE; x++) \ for (x = 0; x < SIZE; x++) \
dst[x] = FILTERY(tmp, filter, SIZE); \ dst[x] = FILTER_ ## VTAPS ## TAP(tmp, filter, SIZE); \
dst += dststride; \ dst += dststride; \
tmp += SIZE; \ tmp += SIZE; \
} \ } \
} }
VP8_EPEL_H(16, FILTER_4TAP, h4) VP8_EPEL_H(16, 4)
VP8_EPEL_H(8, FILTER_4TAP, h4) VP8_EPEL_H(8, 4)
VP8_EPEL_H(4, FILTER_4TAP, h4) VP8_EPEL_H(4, 4)
VP8_EPEL_H(16, FILTER_6TAP, h6) VP8_EPEL_H(16, 6)
VP8_EPEL_H(8, FILTER_6TAP, h6) VP8_EPEL_H(8, 6)
VP8_EPEL_H(4, FILTER_6TAP, h6) VP8_EPEL_H(4, 6)
VP8_EPEL_V(16, FILTER_4TAP, v4) VP8_EPEL_V(16, 4)
VP8_EPEL_V(8, FILTER_4TAP, v4) VP8_EPEL_V(8, 4)
VP8_EPEL_V(4, FILTER_4TAP, v4) VP8_EPEL_V(4, 4)
VP8_EPEL_V(16, FILTER_6TAP, v6) VP8_EPEL_V(16, 6)
VP8_EPEL_V(8, FILTER_6TAP, v6) VP8_EPEL_V(8, 6)
VP8_EPEL_V(4, FILTER_6TAP, v6) VP8_EPEL_V(4, 6)
VP8_EPEL_HV(16, FILTER_4TAP, FILTER_4TAP, h4v4) VP8_EPEL_HV(16, 4, 4)
VP8_EPEL_HV(8, FILTER_4TAP, FILTER_4TAP, h4v4) VP8_EPEL_HV(8, 4, 4)
VP8_EPEL_HV(4, FILTER_4TAP, FILTER_4TAP, h4v4) VP8_EPEL_HV(4, 4, 4)
VP8_EPEL_HV(16, FILTER_4TAP, FILTER_6TAP, h4v6) VP8_EPEL_HV(16, 4, 6)
VP8_EPEL_HV(8, FILTER_4TAP, FILTER_6TAP, h4v6) VP8_EPEL_HV(8, 4, 6)
VP8_EPEL_HV(4, FILTER_4TAP, FILTER_6TAP, h4v6) VP8_EPEL_HV(4, 4, 6)
VP8_EPEL_HV(16, FILTER_6TAP, FILTER_4TAP, h6v4) VP8_EPEL_HV(16, 6, 4)
VP8_EPEL_HV(8, FILTER_6TAP, FILTER_4TAP, h6v4) VP8_EPEL_HV(8, 6, 4)
VP8_EPEL_HV(4, FILTER_6TAP, FILTER_4TAP, h6v4) VP8_EPEL_HV(4, 6, 4)
VP8_EPEL_HV(16, FILTER_6TAP, FILTER_6TAP, h6v6) VP8_EPEL_HV(16, 6, 6)
VP8_EPEL_HV(8, FILTER_6TAP, FILTER_6TAP, h6v6) VP8_EPEL_HV(8, 6, 6)
VP8_EPEL_HV(4, FILTER_6TAP, FILTER_6TAP, h6v6) VP8_EPEL_HV(4, 6, 6)
#define VP8_BILINEAR(SIZE) \ #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) \ static void put_vp8_bilinear ## SIZE ## _h_c(uint8_t *dst, int stride, uint8_t *src, int s2, int h, int mx, int my) \