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Generate intra prediction reference values only when necessary

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This can help increase encoding speed substantially.

Change-Id: Id0c009146e6e74d9365add71c7b10b9a57a84676
This commit is contained in:
hui su 2015-10-30 17:15:49 -07:00
parent c2f6a7df8d
commit e085fb643f
2 changed files with 179 additions and 108 deletions
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145
vp10/common/reconintra.c
View File

@ -305,6 +305,9 @@ static void build_intra_predictors_high(const MACROBLOCKD *xd,
int x0, y0;
const struct macroblockd_plane *const pd = &xd->plane[plane];
#endif
const int need_left = extend_modes[mode] & NEED_LEFT;
const int need_above = extend_modes[mode] & NEED_ABOVE;
const int need_aboveright = extend_modes[mode] & NEED_ABOVERIGHT;
int base = 128 << (bd - 8);
// 127 127 127 .. 127 127 127 127 127 127
// 129 A B .. Y Z
@ -316,6 +319,9 @@ static void build_intra_predictors_high(const MACROBLOCKD *xd,
(void) x;
(void) y;
(void) plane;
(void) need_left;
(void) need_above;
(void) need_aboveright;
// NEED_LEFT
if (extend_modes[mode] & NEED_LEFT) {
@ -372,79 +378,110 @@ static void build_intra_predictors_high(const MACROBLOCKD *xd,
x0 = (-xd->mb_to_left_edge >> (3 + pd->subsampling_x)) + x;
y0 = (-xd->mb_to_top_edge >> (3 + pd->subsampling_y)) + y;
// left
if (left_available) {
if (xd->mb_to_bottom_edge < 0) {
/* slower path if the block needs border extension */
if (y0 + bs <= frame_height) {
// NEED_LEFT
if (need_left) {
if (left_available) {
if (xd->mb_to_bottom_edge < 0) {
/* slower path if the block needs border extension */
if (y0 + bs <= frame_height) {
for (i = 0; i < bs; ++i)
left_col[i] = ref[i * ref_stride - 1];
} else {
const int extend_bottom = frame_height - y0;
for (i = 0; i < extend_bottom; ++i)
left_col[i] = ref[i * ref_stride - 1];
for (; i < bs; ++i)
left_col[i] = ref[(extend_bottom - 1) * ref_stride - 1];
}
} else {
/* faster path if the block does not need extension */
for (i = 0; i < bs; ++i)
left_col[i] = ref[i * ref_stride - 1];
} else {
const int extend_bottom = frame_height - y0;
for (i = 0; i < extend_bottom; ++i)
left_col[i] = ref[i * ref_stride - 1];
for (; i < bs; ++i)
left_col[i] = ref[(extend_bottom - 1) * ref_stride - 1];
}
} else {
/* faster path if the block does not need extension */
for (i = 0; i < bs; ++i)
left_col[i] = ref[i * ref_stride - 1];
// TODO(Peter): this value should probably change for high bitdepth
vpx_memset16(left_col, base + 1, bs);
}
} else {
// TODO(Peter): this value should probably change for high bitdepth
vpx_memset16(left_col, base + 1, bs);
}
// TODO(hkuang) do not extend 2*bs pixels for all modes.
// above
if (up_available) {
const uint16_t *above_ref = ref - ref_stride;
if (xd->mb_to_right_edge < 0) {
/* slower path if the block needs border extension */
if (x0 + 2 * bs <= frame_width) {
if (right_available && bs == 4) {
memcpy(above_row, above_ref, 2 * bs * sizeof(above_row[0]));
// NEED_ABOVE
if (need_above) {
if (up_available) {
const uint16_t *above_ref = ref - ref_stride;
if (xd->mb_to_right_edge < 0) {
/* slower path if the block needs border extension */
if (x0 + bs <= frame_width) {
memcpy(above_row, above_ref, bs * sizeof(above_row[0]));
} else if (x0 <= frame_width) {
const int r = frame_width - x0;
memcpy(above_row, above_ref, r * sizeof(above_row[0]));
vpx_memset16(above_row + r, above_row[r - 1], x0 + bs - frame_width);
}
} else {
/* faster path if the block does not need extension */
if (bs == 4 && right_available && left_available) {
const_above_row = above_ref;
} else {
memcpy(above_row, above_ref, bs * sizeof(above_row[0]));
vpx_memset16(above_row + bs, above_row[bs - 1], bs);
}
} else if (x0 + bs <= frame_width) {
const int r = frame_width - x0;
if (right_available && bs == 4) {
}
above_row[-1] = left_available ? above_ref[-1] : (base + 1);
} else {
vpx_memset16(above_row, base - 1, bs);
above_row[-1] = base - 1;
}
}
// NEED_ABOVERIGHT
if (need_aboveright) {
if (up_available) {
const uint16_t *above_ref = ref - ref_stride;
if (xd->mb_to_right_edge < 0) {
/* slower path if the block needs border extension */
if (x0 + 2 * bs <= frame_width) {
if (right_available && bs == 4) {
memcpy(above_row, above_ref, 2 * bs * sizeof(above_row[0]));
} else {
memcpy(above_row, above_ref, bs * sizeof(above_row[0]));
vpx_memset16(above_row + bs, above_row[bs - 1], bs);
}
} else if (x0 + bs <= frame_width) {
const int r = frame_width - x0;
if (right_available && bs == 4) {
memcpy(above_row, above_ref, r * sizeof(above_row[0]));
vpx_memset16(above_row + r, above_row[r - 1],
x0 + 2 * bs - frame_width);
} else {
memcpy(above_row, above_ref, bs * sizeof(above_row[0]));
vpx_memset16(above_row + bs, above_row[bs - 1], bs);
}
} else if (x0 <= frame_width) {
const int r = frame_width - x0;
memcpy(above_row, above_ref, r * sizeof(above_row[0]));
vpx_memset16(above_row + r, above_row[r - 1],
x0 + 2 * bs - frame_width);
}
// TODO(Peter) this value should probably change for high bitdepth
above_row[-1] = left_available ? above_ref[-1] : (base + 1);
} else {
/* faster path if the block does not need extension */
if (bs == 4 && right_available && left_available) {
const_above_row = above_ref;
} else {
memcpy(above_row, above_ref, bs * sizeof(above_row[0]));
vpx_memset16(above_row + bs, above_row[bs - 1], bs);
if (bs == 4 && right_available)
memcpy(above_row + bs, above_ref + bs, bs * sizeof(above_row[0]));
else
vpx_memset16(above_row + bs, above_row[bs - 1], bs);
// TODO(Peter): this value should probably change for high bitdepth
above_row[-1] = left_available ? above_ref[-1] : (base + 1);
}
} else if (x0 <= frame_width) {
const int r = frame_width - x0;
memcpy(above_row, above_ref, r * sizeof(above_row[0]));
vpx_memset16(above_row + r, above_row[r - 1],
x0 + 2 * bs - frame_width);
}
// TODO(Peter) this value should probably change for high bitdepth
above_row[-1] = left_available ? above_ref[-1] : (base+1);
} else {
/* faster path if the block does not need extension */
if (bs == 4 && right_available && left_available) {
const_above_row = above_ref;
} else {
memcpy(above_row, above_ref, bs * sizeof(above_row[0]));
if (bs == 4 && right_available)
memcpy(above_row + bs, above_ref + bs, bs * sizeof(above_row[0]));
else
vpx_memset16(above_row + bs, above_row[bs - 1], bs);
// TODO(Peter): this value should probably change for high bitdepth
above_row[-1] = left_available ? above_ref[-1] : (base+1);
}
vpx_memset16(above_row, base - 1, bs * 2);
// TODO(Peter): this value should probably change for high bitdepth
above_row[-1] = base - 1;
}
} else {
vpx_memset16(above_row, base - 1, bs * 2);
// TODO(Peter): this value should probably change for high bitdepth
above_row[-1] = base - 1;
}
#endif

142
vp9/common/vp9_reconintra.c
View File

@ -133,6 +133,9 @@ static void build_intra_predictors_high(const MACROBLOCKD *xd,
int frame_width, frame_height;
int x0, y0;
const struct macroblockd_plane *const pd = &xd->plane[plane];
const int need_left = extend_modes[mode] & NEED_LEFT;
const int need_above = extend_modes[mode] & NEED_ABOVE;
const int need_aboveright = extend_modes[mode] & NEED_ABOVERIGHT;
int base = 128 << (bd - 8);
// 127 127 127 .. 127 127 127 127 127 127
// 129 A B .. Y Z
@ -153,79 +156,110 @@ static void build_intra_predictors_high(const MACROBLOCKD *xd,
x0 = (-xd->mb_to_left_edge >> (3 + pd->subsampling_x)) + x;
y0 = (-xd->mb_to_top_edge >> (3 + pd->subsampling_y)) + y;
// left
if (left_available) {
if (xd->mb_to_bottom_edge < 0) {
/* slower path if the block needs border extension */
if (y0 + bs <= frame_height) {
// NEED_LEFT
if (need_left) {
if (left_available) {
if (xd->mb_to_bottom_edge < 0) {
/* slower path if the block needs border extension */
if (y0 + bs <= frame_height) {
for (i = 0; i < bs; ++i)
left_col[i] = ref[i * ref_stride - 1];
} else {
const int extend_bottom = frame_height - y0;
for (i = 0; i < extend_bottom; ++i)
left_col[i] = ref[i * ref_stride - 1];
for (; i < bs; ++i)
left_col[i] = ref[(extend_bottom - 1) * ref_stride - 1];
}
} else {
/* faster path if the block does not need extension */
for (i = 0; i < bs; ++i)
left_col[i] = ref[i * ref_stride - 1];
} else {
const int extend_bottom = frame_height - y0;
for (i = 0; i < extend_bottom; ++i)
left_col[i] = ref[i * ref_stride - 1];
for (; i < bs; ++i)
left_col[i] = ref[(extend_bottom - 1) * ref_stride - 1];
}
} else {
/* faster path if the block does not need extension */
for (i = 0; i < bs; ++i)
left_col[i] = ref[i * ref_stride - 1];
// TODO(Peter): this value should probably change for high bitdepth
vpx_memset16(left_col, base + 1, bs);
}
} else {
// TODO(Peter): this value should probably change for high bitdepth
vpx_memset16(left_col, base + 1, bs);
}
// TODO(hkuang) do not extend 2*bs pixels for all modes.
// above
if (up_available) {
const uint16_t *above_ref = ref - ref_stride;
if (xd->mb_to_right_edge < 0) {
/* slower path if the block needs border extension */
if (x0 + 2 * bs <= frame_width) {
if (right_available && bs == 4) {
memcpy(above_row, above_ref, 2 * bs * sizeof(above_row[0]));
// NEED_ABOVE
if (need_above) {
if (up_available) {
const uint16_t *above_ref = ref - ref_stride;
if (xd->mb_to_right_edge < 0) {
/* slower path if the block needs border extension */
if (x0 + bs <= frame_width) {
memcpy(above_row, above_ref, bs * sizeof(above_row[0]));
} else if (x0 <= frame_width) {
const int r = frame_width - x0;
memcpy(above_row, above_ref, r * sizeof(above_row[0]));
vpx_memset16(above_row + r, above_row[r - 1], x0 + bs - frame_width);
}
} else {
/* faster path if the block does not need extension */
if (bs == 4 && right_available && left_available) {
const_above_row = above_ref;
} else {
memcpy(above_row, above_ref, bs * sizeof(above_row[0]));
vpx_memset16(above_row + bs, above_row[bs - 1], bs);
}
} else if (x0 + bs <= frame_width) {
const int r = frame_width - x0;
if (right_available && bs == 4) {
}
above_row[-1] = left_available ? above_ref[-1] : (base + 1);
} else {
vpx_memset16(above_row, base - 1, bs);
above_row[-1] = base - 1;
}
}
// NEED_ABOVERIGHT
if (need_aboveright) {
if (up_available) {
const uint16_t *above_ref = ref - ref_stride;
if (xd->mb_to_right_edge < 0) {
/* slower path if the block needs border extension */
if (x0 + 2 * bs <= frame_width) {
if (right_available && bs == 4) {
memcpy(above_row, above_ref, 2 * bs * sizeof(above_row[0]));
} else {
memcpy(above_row, above_ref, bs * sizeof(above_row[0]));
vpx_memset16(above_row + bs, above_row[bs - 1], bs);
}
} else if (x0 + bs <= frame_width) {
const int r = frame_width - x0;
if (right_available && bs == 4) {
memcpy(above_row, above_ref, r * sizeof(above_row[0]));
vpx_memset16(above_row + r, above_row[r - 1],
x0 + 2 * bs - frame_width);
} else {
memcpy(above_row, above_ref, bs * sizeof(above_row[0]));
vpx_memset16(above_row + bs, above_row[bs - 1], bs);
}
} else if (x0 <= frame_width) {
const int r = frame_width - x0;
memcpy(above_row, above_ref, r * sizeof(above_row[0]));
vpx_memset16(above_row + r, above_row[r - 1],
x0 + 2 * bs - frame_width);
}
// TODO(Peter) this value should probably change for high bitdepth
above_row[-1] = left_available ? above_ref[-1] : (base + 1);
} else {
/* faster path if the block does not need extension */
if (bs == 4 && right_available && left_available) {
const_above_row = above_ref;
} else {
memcpy(above_row, above_ref, bs * sizeof(above_row[0]));
vpx_memset16(above_row + bs, above_row[bs - 1], bs);
if (bs == 4 && right_available)
memcpy(above_row + bs, above_ref + bs, bs * sizeof(above_row[0]));
else
vpx_memset16(above_row + bs, above_row[bs - 1], bs);
// TODO(Peter): this value should probably change for high bitdepth
above_row[-1] = left_available ? above_ref[-1] : (base + 1);
}
} else if (x0 <= frame_width) {
const int r = frame_width - x0;
memcpy(above_row, above_ref, r * sizeof(above_row[0]));
vpx_memset16(above_row + r, above_row[r - 1],
x0 + 2 * bs - frame_width);
}
// TODO(Peter) this value should probably change for high bitdepth
above_row[-1] = left_available ? above_ref[-1] : (base+1);
} else {
/* faster path if the block does not need extension */
if (bs == 4 && right_available && left_available) {
const_above_row = above_ref;
} else {
memcpy(above_row, above_ref, bs * sizeof(above_row[0]));
if (bs == 4 && right_available)
memcpy(above_row + bs, above_ref + bs, bs * sizeof(above_row[0]));
else
vpx_memset16(above_row + bs, above_row[bs - 1], bs);
// TODO(Peter): this value should probably change for high bitdepth
above_row[-1] = left_available ? above_ref[-1] : (base+1);
}
vpx_memset16(above_row, base - 1, bs * 2);
// TODO(Peter): this value should probably change for high bitdepth
above_row[-1] = base - 1;
}
} else {
vpx_memset16(above_row, base - 1, bs * 2);
// TODO(Peter): this value should probably change for high bitdepth
above_row[-1] = base - 1;
}
// predict