| 1c9f4b50 | /* * VP9 compatible video decoder * * Copyright (C) 2013 Ronald S. Bultje <rsbultje gmail com> * Copyright (C) 2013 Clément Bœsch <u pkh me> * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include "internal.h" #include "vp56.h" #include "vp9.h" #include "vp9data.h" |
| f8c01994 | #include "vp9dec.h" |
| 1c9f4b50 | static av_always_inline void clamp_mv(VP56mv *dst, const VP56mv *src, |
| e59da0f7 |
VP9TileData *td) |
| 1c9f4b50 |
{ |
| e59da0f7 |
dst->x = av_clip(src->x, td->min_mv.x, td->max_mv.x);
dst->y = av_clip(src->y, td->min_mv.y, td->max_mv.y); |
| 1c9f4b50 | } |
| e59da0f7 | static void find_ref_mvs(VP9TileData *td, |
| 1c9f4b50 |
VP56mv *pmv, int ref, int z, int idx, int sb)
{
static const int8_t mv_ref_blk_off[N_BS_SIZES][8][2] = { |
| 875f6955 |
[BS_64x64] = { { 3, -1 }, { -1, 3 }, { 4, -1 }, { -1, 4 },
{ -1, -1 }, { 0, -1 }, { -1, 0 }, { 6, -1 } },
[BS_64x32] = { { 0, -1 }, { -1, 0 }, { 4, -1 }, { -1, 2 },
{ -1, -1 }, { 0, -3 }, { -3, 0 }, { 2, -1 } },
[BS_32x64] = { { -1, 0 }, { 0, -1 }, { -1, 4 }, { 2, -1 },
{ -1, -1 }, { -3, 0 }, { 0, -3 }, { -1, 2 } },
[BS_32x32] = { { 1, -1 }, { -1, 1 }, { 2, -1 }, { -1, 2 },
{ -1, -1 }, { 0, -3 }, { -3, 0 }, { -3, -3 } },
[BS_32x16] = { { 0, -1 }, { -1, 0 }, { 2, -1 }, { -1, -1 },
{ -1, 1 }, { 0, -3 }, { -3, 0 }, { -3, -3 } },
[BS_16x32] = { { -1, 0 }, { 0, -1 }, { -1, 2 }, { -1, -1 },
{ 1, -1 }, { -3, 0 }, { 0, -3 }, { -3, -3 } },
[BS_16x16] = { { 0, -1 }, { -1, 0 }, { 1, -1 }, { -1, 1 },
{ -1, -1 }, { 0, -3 }, { -3, 0 }, { -3, -3 } },
[BS_16x8] = { { 0, -1 }, { -1, 0 }, { 1, -1 }, { -1, -1 },
{ 0, -2 }, { -2, 0 }, { -2, -1 }, { -1, -2 } },
[BS_8x16] = { { -1, 0 }, { 0, -1 }, { -1, 1 }, { -1, -1 },
{ -2, 0 }, { 0, -2 }, { -1, -2 }, { -2, -1 } },
[BS_8x8] = { { 0, -1 }, { -1, 0 }, { -1, -1 }, { 0, -2 },
{ -2, 0 }, { -1, -2 }, { -2, -1 }, { -2, -2 } },
[BS_8x4] = { { 0, -1 }, { -1, 0 }, { -1, -1 }, { 0, -2 },
{ -2, 0 }, { -1, -2 }, { -2, -1 }, { -2, -2 } },
[BS_4x8] = { { 0, -1 }, { -1, 0 }, { -1, -1 }, { 0, -2 },
{ -2, 0 }, { -1, -2 }, { -2, -1 }, { -2, -2 } },
[BS_4x4] = { { 0, -1 }, { -1, 0 }, { -1, -1 }, { 0, -2 },
{ -2, 0 }, { -1, -2 }, { -2, -1 }, { -2, -2 } }, |
| 1c9f4b50 |
}; |
| e59da0f7 |
VP9Context *s = td->s;
VP9Block *b = td->b;
int row = td->row, col = td->col, row7 = td->row7; |
| 1c9f4b50 |
const int8_t (*p)[2] = mv_ref_blk_off[b->bs];
#define INVALID_MV 0x80008000U
uint32_t mem = INVALID_MV, mem_sub8x8 = INVALID_MV;
int i;
|
| 875f6955 |
#define RETURN_DIRECT_MV(mv) \
do { \
uint32_t m = AV_RN32A(&mv); \
if (!idx) { \
AV_WN32A(pmv, m); \
return; \
} else if (mem == INVALID_MV) { \
mem = m; \
} else if (m != mem) { \
AV_WN32A(pmv, m); \
return; \
} \ |
| 1c9f4b50 |
} while (0)
if (sb >= 0) {
if (sb == 2 || sb == 1) {
RETURN_DIRECT_MV(b->mv[0][z]);
} else if (sb == 3) {
RETURN_DIRECT_MV(b->mv[2][z]);
RETURN_DIRECT_MV(b->mv[1][z]);
RETURN_DIRECT_MV(b->mv[0][z]);
}
|
| 875f6955 |
#define RETURN_MV(mv) \
do { \
if (sb > 0) { \
VP56mv tmp; \
uint32_t m; \
av_assert2(idx == 1); \
av_assert2(mem != INVALID_MV); \
if (mem_sub8x8 == INVALID_MV) { \ |
| e59da0f7 |
clamp_mv(&tmp, &mv, td); \ |
| 875f6955 |
m = AV_RN32A(&tmp); \
if (m != mem) { \
AV_WN32A(pmv, m); \
return; \
} \
mem_sub8x8 = AV_RN32A(&mv); \
} else if (mem_sub8x8 != AV_RN32A(&mv)) { \ |
| e59da0f7 |
clamp_mv(&tmp, &mv, td); \ |
| 875f6955 |
m = AV_RN32A(&tmp); \
if (m != mem) { \
AV_WN32A(pmv, m); \
} else { \ |
| 1c9f4b50 |
/* BUG I'm pretty sure this isn't the intention */ \ |
| 875f6955 |
AV_WN32A(pmv, 0); \
} \
return; \
} \
} else { \
uint32_t m = AV_RN32A(&mv); \
if (!idx) { \ |
| e59da0f7 |
clamp_mv(pmv, &mv, td); \ |
| 875f6955 |
return; \
} else if (mem == INVALID_MV) { \
mem = m; \
} else if (m != mem) { \ |
| e59da0f7 |
clamp_mv(pmv, &mv, td); \ |
| 875f6955 |
return; \
} \
} \ |
| 1c9f4b50 |
} while (0)
if (row > 0) { |
| 37814a21 |
VP9mvrefPair *mv = &s->s.frames[CUR_FRAME].mv[(row - 1) * s->sb_cols * 8 + col]; |
| 875f6955 |
if (mv->ref[0] == ref) |
| 1c9f4b50 |
RETURN_MV(s->above_mv_ctx[2 * col + (sb & 1)][0]); |
| 875f6955 |
else if (mv->ref[1] == ref) |
| 1c9f4b50 |
RETURN_MV(s->above_mv_ctx[2 * col + (sb & 1)][1]);
} |
| e59da0f7 |
if (col > td->tile_col_start) { |
| 37814a21 |
VP9mvrefPair *mv = &s->s.frames[CUR_FRAME].mv[row * s->sb_cols * 8 + col - 1]; |
| 875f6955 |
if (mv->ref[0] == ref) |
| e59da0f7 |
RETURN_MV(td->left_mv_ctx[2 * row7 + (sb >> 1)][0]); |
| 875f6955 |
else if (mv->ref[1] == ref) |
| e59da0f7 |
RETURN_MV(td->left_mv_ctx[2 * row7 + (sb >> 1)][1]); |
| 1c9f4b50 |
}
i = 2;
} else {
i = 0;
}
|
| 875f6955 |
// previously coded MVs in this neighborhood, using same reference frame |
| 1c9f4b50 |
for (; i < 8; i++) {
int c = p[i][0] + col, r = p[i][1] + row;
|
| e59da0f7 |
if (c >= td->tile_col_start && c < s->cols && |
| 875f6955 |
r >= 0 && r < s->rows) { |
| 37814a21 |
VP9mvrefPair *mv = &s->s.frames[CUR_FRAME].mv[r * s->sb_cols * 8 + c]; |
| 1c9f4b50 | |
| 875f6955 |
if (mv->ref[0] == ref) |
| 1c9f4b50 |
RETURN_MV(mv->mv[0]); |
| 875f6955 |
else if (mv->ref[1] == ref) |
| 1c9f4b50 |
RETURN_MV(mv->mv[1]);
}
}
// MV at this position in previous frame, using same reference frame
if (s->s.h.use_last_frame_mvs) { |
| 37814a21 |
VP9mvrefPair *mv = &s->s.frames[REF_FRAME_MVPAIR].mv[row * s->sb_cols * 8 + col]; |
| 1c9f4b50 |
if (!s->s.frames[REF_FRAME_MVPAIR].uses_2pass)
ff_thread_await_progress(&s->s.frames[REF_FRAME_MVPAIR].tf, row >> 3, 0); |
| 875f6955 |
if (mv->ref[0] == ref) |
| 1c9f4b50 |
RETURN_MV(mv->mv[0]); |
| 875f6955 |
else if (mv->ref[1] == ref) |
| 1c9f4b50 |
RETURN_MV(mv->mv[1]);
}
|
| 875f6955 |
#define RETURN_SCALE_MV(mv, scale) \
do { \
if (scale) { \
VP56mv mv_temp = { -mv.x, -mv.y }; \
RETURN_MV(mv_temp); \
} else { \
RETURN_MV(mv); \
} \ |
| 1c9f4b50 |
} while (0)
|
| 875f6955 |
// previously coded MVs in this neighborhood, using different reference frame |
| 1c9f4b50 |
for (i = 0; i < 8; i++) {
int c = p[i][0] + col, r = p[i][1] + row;
|
| e59da0f7 |
if (c >= td->tile_col_start && c < s->cols && r >= 0 && r < s->rows) { |
| 37814a21 |
VP9mvrefPair *mv = &s->s.frames[CUR_FRAME].mv[r * s->sb_cols * 8 + c]; |
| 1c9f4b50 | |
| 875f6955 |
if (mv->ref[0] != ref && mv->ref[0] >= 0)
RETURN_SCALE_MV(mv->mv[0],
s->s.h.signbias[mv->ref[0]] != s->s.h.signbias[ref]); |
| 1c9f4b50 |
if (mv->ref[1] != ref && mv->ref[1] >= 0 &&
// BUG - libvpx has this condition regardless of whether
// we used the first ref MV and pre-scaling
AV_RN32A(&mv->mv[0]) != AV_RN32A(&mv->mv[1])) {
RETURN_SCALE_MV(mv->mv[1], s->s.h.signbias[mv->ref[1]] != s->s.h.signbias[ref]);
}
}
}
// MV at this position in previous frame, using different reference frame
if (s->s.h.use_last_frame_mvs) { |
| 37814a21 |
VP9mvrefPair *mv = &s->s.frames[REF_FRAME_MVPAIR].mv[row * s->sb_cols * 8 + col]; |
| 1c9f4b50 |
// no need to await_progress, because we already did that above |
| 875f6955 |
if (mv->ref[0] != ref && mv->ref[0] >= 0) |
| 1c9f4b50 |
RETURN_SCALE_MV(mv->mv[0], s->s.h.signbias[mv->ref[0]] != s->s.h.signbias[ref]);
if (mv->ref[1] != ref && mv->ref[1] >= 0 &&
// BUG - libvpx has this condition regardless of whether
// we used the first ref MV and pre-scaling
AV_RN32A(&mv->mv[0]) != AV_RN32A(&mv->mv[1])) {
RETURN_SCALE_MV(mv->mv[1], s->s.h.signbias[mv->ref[1]] != s->s.h.signbias[ref]);
}
}
AV_ZERO32(pmv); |
| e59da0f7 |
clamp_mv(pmv, pmv, td); |
| 1c9f4b50 | #undef INVALID_MV #undef RETURN_MV #undef RETURN_SCALE_MV } |
| e59da0f7 | static av_always_inline int read_mv_component(VP9TileData *td, int idx, int hp) |
| 1c9f4b50 |
{ |
| e59da0f7 |
VP9Context *s = td->s;
int bit, sign = vp56_rac_get_prob(td->c, s->prob.p.mv_comp[idx].sign);
int n, c = vp8_rac_get_tree(td->c, ff_vp9_mv_class_tree, |
| 1c9f4b50 |
s->prob.p.mv_comp[idx].classes);
|
| e59da0f7 |
td->counts.mv_comp[idx].sign[sign]++;
td->counts.mv_comp[idx].classes[c]++; |
| 1c9f4b50 |
if (c) {
int m;
for (n = 0, m = 0; m < c; m++) { |
| e59da0f7 |
bit = vp56_rac_get_prob(td->c, s->prob.p.mv_comp[idx].bits[m]); |
| 1c9f4b50 |
n |= bit << m; |
| e59da0f7 |
td->counts.mv_comp[idx].bits[m][bit]++; |
| 1c9f4b50 |
}
n <<= 3; |
| e59da0f7 |
bit = vp8_rac_get_tree(td->c, ff_vp9_mv_fp_tree, |
| 875f6955 |
s->prob.p.mv_comp[idx].fp);
n |= bit << 1; |
| e59da0f7 |
td->counts.mv_comp[idx].fp[bit]++; |
| 1c9f4b50 |
if (hp) { |
| e59da0f7 |
bit = vp56_rac_get_prob(td->c, s->prob.p.mv_comp[idx].hp);
td->counts.mv_comp[idx].hp[bit]++; |
| 1c9f4b50 |
n |= bit;
} else {
n |= 1;
// bug in libvpx - we count for bw entropy purposes even if the
// bit wasn't coded |
| e59da0f7 |
td->counts.mv_comp[idx].hp[1]++; |
| 1c9f4b50 |
}
n += 8 << c;
} else { |
| e59da0f7 |
n = vp56_rac_get_prob(td->c, s->prob.p.mv_comp[idx].class0);
td->counts.mv_comp[idx].class0[n]++;
bit = vp8_rac_get_tree(td->c, ff_vp9_mv_fp_tree, |
| 1c9f4b50 |
s->prob.p.mv_comp[idx].class0_fp[n]); |
| e59da0f7 |
td->counts.mv_comp[idx].class0_fp[n][bit]++; |
| 1c9f4b50 |
n = (n << 3) | (bit << 1);
if (hp) { |
| e59da0f7 |
bit = vp56_rac_get_prob(td->c, s->prob.p.mv_comp[idx].class0_hp);
td->counts.mv_comp[idx].class0_hp[bit]++; |
| 1c9f4b50 |
n |= bit;
} else {
n |= 1;
// bug in libvpx - we count for bw entropy purposes even if the
// bit wasn't coded |
| e59da0f7 |
td->counts.mv_comp[idx].class0_hp[1]++; |
| 1c9f4b50 |
}
}
return sign ? -(n + 1) : (n + 1);
}
|
| e59da0f7 | void ff_vp9_fill_mv(VP9TileData *td, VP56mv *mv, int mode, int sb) |
| 1c9f4b50 |
{ |
| e59da0f7 |
VP9Context *s = td->s;
VP9Block *b = td->b; |
| 1c9f4b50 |
if (mode == ZEROMV) {
AV_ZERO64(mv);
} else {
int hp;
// FIXME cache this value and reuse for other subblocks |
| e59da0f7 |
find_ref_mvs(td, &mv[0], b->ref[0], 0, mode == NEARMV, |
| 1c9f4b50 |
mode == NEWMV ? -1 : sb);
// FIXME maybe move this code into find_ref_mvs()
if ((mode == NEWMV || sb == -1) && |
| 875f6955 |
!(hp = s->s.h.highprecisionmvs &&
abs(mv[0].x) < 64 && abs(mv[0].y) < 64)) { |
| 1c9f4b50 |
if (mv[0].y & 1) {
if (mv[0].y < 0)
mv[0].y++;
else
mv[0].y--;
}
if (mv[0].x & 1) {
if (mv[0].x < 0)
mv[0].x++;
else
mv[0].x--;
}
}
if (mode == NEWMV) { |
| e59da0f7 |
enum MVJoint j = vp8_rac_get_tree(td->c, ff_vp9_mv_joint_tree, |
| 1c9f4b50 |
s->prob.p.mv_joint);
|
| e59da0f7 |
td->counts.mv_joint[j]++; |
| 1c9f4b50 |
if (j >= MV_JOINT_V) |
| e59da0f7 |
mv[0].y += read_mv_component(td, 0, hp); |
| 1c9f4b50 |
if (j & 1) |
| e59da0f7 |
mv[0].x += read_mv_component(td, 1, hp); |
| 1c9f4b50 |
}
if (b->comp) {
// FIXME cache this value and reuse for other subblocks |
| e59da0f7 |
find_ref_mvs(td, &mv[1], b->ref[1], 1, mode == NEARMV, |
| 1c9f4b50 |
mode == NEWMV ? -1 : sb);
if ((mode == NEWMV || sb == -1) && |
| 875f6955 |
!(hp = s->s.h.highprecisionmvs &&
abs(mv[1].x) < 64 && abs(mv[1].y) < 64)) { |
| 1c9f4b50 |
if (mv[1].y & 1) {
if (mv[1].y < 0)
mv[1].y++;
else
mv[1].y--;
}
if (mv[1].x & 1) {
if (mv[1].x < 0)
mv[1].x++;
else
mv[1].x--;
}
}
if (mode == NEWMV) { |
| e59da0f7 |
enum MVJoint j = vp8_rac_get_tree(td->c, ff_vp9_mv_joint_tree, |
| 1c9f4b50 |
s->prob.p.mv_joint);
|
| e59da0f7 |
td->counts.mv_joint[j]++; |
| 1c9f4b50 |
if (j >= MV_JOINT_V) |
| e59da0f7 |
mv[1].y += read_mv_component(td, 0, hp); |
| 1c9f4b50 |
if (j & 1) |
| e59da0f7 |
mv[1].x += read_mv_component(td, 1, hp); |
| 1c9f4b50 |
}
}
}
} |