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hevc/intra_pred: optimize EXTEND_()* 

Process 4 pixels at once.

Signed-off-by: Anton Khirnov <anton@khirnov.net>
This commit is contained in:
Mickaël Raulet 2014-05-17 21:59:08 +02:00 committed by Anton Khirnov
parent a1c2b48018
commit 4c390b1ba9
1 changed files with 28 additions and 37 deletions
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65
libavcodec/hevcpred_template.c
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@ -41,14 +41,14 @@ static av_always_inline void FUNC(intra_pred)(HEVCContext *s, int x0, int y0,
MVF_PU(x, y).is_intra
#define MIN_TB_ADDR_ZS(x, y) \
s->pps->min_tb_addr_zs[(y) * s->sps->min_tb_width + (x)]
#define EXTEND_LEFT(ptr, start, length) \
for (i = (start); i > (start) - (length); i--) \
ptr[i - 1] = ptr[i]
#define EXTEND_RIGHT(ptr, start, length) \
for (i = (start); i < (start) + (length); i++) \
ptr[i] = ptr[i - 1]
#define EXTEND_UP(ptr, start, length) EXTEND_LEFT(ptr, start, length)
#define EXTEND_DOWN(ptr, start, length) EXTEND_RIGHT(ptr, start, length)
#define EXTEND(ptr, val, len) \
do { \
pixel4 pix = PIXEL_SPLAT_X4(val); \
for (i = 0; i < (len); i += 4) \
AV_WN4P(ptr + i, pix); \
} while (0)
#define EXTEND_LEFT_CIP(ptr, start, length) \
for (i = (start); i > (start) - (length); i--) \
if (!IS_INTRA(i - 1, -1)) \
@ -233,12 +233,10 @@ static av_always_inline void FUNC(intra_pred)(HEVCContext *s, int x0, int y0,
if (cand_bottom_left || cand_left) {
EXTEND_DOWN_CIP(left, j, size_max_y - j);
}
if (!cand_left) {
EXTEND_DOWN(left, 0, size);
}
if (!cand_bottom_left) {
EXTEND_DOWN(left, size, size);
}
if (!cand_left)
EXTEND(left, left[-1], size);
if (!cand_bottom_left)
EXTEND(left + size, left[size - 1], size);
if (x0 != 0 && y0 != 0) {
EXTEND_UP_CIP(left, size_max_y - 1, size_max_y);
} else if (x0 == 0) {
@ -255,42 +253,38 @@ static av_always_inline void FUNC(intra_pred)(HEVCContext *s, int x0, int y0,
// Infer the unavailable samples
if (!cand_bottom_left) {
if (cand_left) {
EXTEND_DOWN(left, size, size);
EXTEND(left + size, left[size - 1], size);
} else if (cand_up_left) {
EXTEND_DOWN(left, 0, 2 * size);
EXTEND(left, left[-1], 2 * size);
cand_left = 1;
} else if (cand_up) {
left[-1] = top[0];
EXTEND_DOWN(left, 0, 2 * size);
EXTEND(left, left[-1], 2 * size);
cand_up_left = 1;
cand_left = 1;
} else if (cand_up_right) {
EXTEND_LEFT(top, size, size);
left[-1] = top[0];
EXTEND_DOWN(left, 0, 2 * size);
EXTEND(top, top[size], size);
left[-1] = top[size];
EXTEND(left, left[-1], 2 * size);
cand_up = 1;
cand_up_left = 1;
cand_left = 1;
} else { // No samples available
top[0] = left[-1] = (1 << (BIT_DEPTH - 1));
EXTEND_RIGHT(top, 1, 2 * size - 1);
EXTEND_DOWN(left, 0, 2 * size);
left[-1] = (1 << (BIT_DEPTH - 1));
EXTEND(top, left[-1], 2 * size);
EXTEND(left, left[-1], 2 * size);
}
}
if (!cand_left) {
EXTEND_UP(left, size, size);
}
if (!cand_left)
EXTEND(left, left[size], size);
if (!cand_up_left) {
left[-1] = left[0];
}
if (!cand_up) {
top[0] = left[-1];
EXTEND_RIGHT(top, 1, size - 1);
}
if (!cand_up_right) {
EXTEND_RIGHT(top, size, size);
}
if (!cand_up)
EXTEND(top, left[-1], size);
if (!cand_up_right)
EXTEND(top + size, top[size - 1], size);
top[-1] = left[-1];
@ -542,9 +536,6 @@ static void FUNC(pred_angular_3)(uint8_t *src, const uint8_t *top,
#undef MVF_PU
#undef MVF
#undef PU
#undef EXTEND_LEFT
#undef EXTEND_RIGHT
#undef EXTEND_UP
#undef EXTEND_DOWN
#undef EXTEND
#undef MIN_TB_ADDR_ZS
#undef POS