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FFmpeg/libavcodec/vc1_mc.c

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/*
* VC-1 and WMV3 decoder
* Copyright (c) 2011 Mashiat Sarker Shakkhar
* Copyright (c) 2006-2007 Konstantin Shishkov
* Partly based on vc9.c (c) 2005 Anonymous, Alex Beregszaszi, Michael Niedermayer
*
* 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
*/
/**
* @file
* VC-1 and WMV3 block decoding routines
*/
#include "avcodec.h"
#include "h264chroma.h"
#include "mathops.h"
#include "mpegvideo.h"
#include "vc1.h"
static av_always_inline void vc1_scale_luma(uint8_t *srcY,
int k, int linesize)
{
int i, j;
for (j = 0; j < k; j++) {
for (i = 0; i < k; i++)
srcY[i] = ((srcY[i] - 128) >> 1) + 128;
srcY += linesize;
}
}
static av_always_inline void vc1_scale_chroma(uint8_t *srcU, uint8_t *srcV,
int k, int uvlinesize)
{
int i, j;
for (j = 0; j < k; j++) {
for (i = 0; i < k; i++) {
srcU[i] = ((srcU[i] - 128) >> 1) + 128;
srcV[i] = ((srcV[i] - 128) >> 1) + 128;
}
srcU += uvlinesize;
srcV += uvlinesize;
}
}
static av_always_inline void vc1_lut_scale_luma(uint8_t *srcY,
uint8_t *lut1, uint8_t *lut2,
int k, int linesize)
{
int i, j;
for (j = 0; j < k; j += 2) {
for (i = 0; i < k; i++)
srcY[i] = lut1[srcY[i]];
srcY += linesize;
if (j + 1 == k)
break;
for (i = 0; i < k; i++)
srcY[i] = lut2[srcY[i]];
srcY += linesize;
}
}
static av_always_inline void vc1_lut_scale_chroma(uint8_t *srcU, uint8_t *srcV,
uint8_t *lut1, uint8_t *lut2,
int k, int uvlinesize)
{
int i, j;
for (j = 0; j < k; j += 2) {
for (i = 0; i < k; i++) {
srcU[i] = lut1[srcU[i]];
srcV[i] = lut1[srcV[i]];
}
srcU += uvlinesize;
srcV += uvlinesize;
if (j + 1 == k)
break;
for (i = 0; i < k; i++) {
srcU[i] = lut2[srcU[i]];
srcV[i] = lut2[srcV[i]];
}
srcU += uvlinesize;
srcV += uvlinesize;
}
}
static const uint8_t popcount4[16] = { 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4 };
static av_always_inline int get_luma_mv(VC1Context *v, int dir, int16_t *tx, int16_t *ty)
{
MpegEncContext *s = &v->s;
int idx = v->mv_f[dir][s->block_index[0] + v->blocks_off] |
(v->mv_f[dir][s->block_index[1] + v->blocks_off] << 1) |
(v->mv_f[dir][s->block_index[2] + v->blocks_off] << 2) |
(v->mv_f[dir][s->block_index[3] + v->blocks_off] << 3);
static const uint8_t index2[16] = { 0, 0, 0, 0x23, 0, 0x13, 0x03, 0, 0, 0x12, 0x02, 0, 0x01, 0, 0, 0 };
int opp_count = popcount4[idx];
switch (opp_count) {
case 0:
case 4:
*tx = median4(s->mv[dir][0][0], s->mv[dir][1][0], s->mv[dir][2][0], s->mv[dir][3][0]);
*ty = median4(s->mv[dir][0][1], s->mv[dir][1][1], s->mv[dir][2][1], s->mv[dir][3][1]);
break;
case 1:
*tx = mid_pred(s->mv[dir][idx < 2][0], s->mv[dir][1 + (idx < 4)][0], s->mv[dir][2 + (idx < 8)][0]);
*ty = mid_pred(s->mv[dir][idx < 2][1], s->mv[dir][1 + (idx < 4)][1], s->mv[dir][2 + (idx < 8)][1]);
break;
case 3:
*tx = mid_pred(s->mv[dir][idx > 0xd][0], s->mv[dir][1 + (idx > 0xb)][0], s->mv[dir][2 + (idx > 0x7)][0]);
*ty = mid_pred(s->mv[dir][idx > 0xd][1], s->mv[dir][1 + (idx > 0xb)][1], s->mv[dir][2 + (idx > 0x7)][1]);
break;
case 2:
*tx = (s->mv[dir][index2[idx] >> 4][0] + s->mv[dir][index2[idx] & 0xf][0]) / 2;
*ty = (s->mv[dir][index2[idx] >> 4][1] + s->mv[dir][index2[idx] & 0xf][1]) / 2;
break;
}
return opp_count;
}
static av_always_inline int get_chroma_mv(VC1Context *v, int dir, int16_t *tx, int16_t *ty)
{
MpegEncContext *s = &v->s;
int idx = !v->mb_type[0][s->block_index[0]] |
(!v->mb_type[0][s->block_index[1]] << 1) |
(!v->mb_type[0][s->block_index[2]] << 2) |
(!v->mb_type[0][s->block_index[3]] << 3);
static const uint8_t index2[16] = { 0, 0, 0, 0x01, 0, 0x02, 0x12, 0, 0, 0x03, 0x13, 0, 0x23, 0, 0, 0 };
int valid_count = popcount4[idx];
switch (valid_count) {
case 4:
*tx = median4(s->mv[dir][0][0], s->mv[dir][1][0], s->mv[dir][2][0], s->mv[dir][3][0]);
*ty = median4(s->mv[dir][0][1], s->mv[dir][1][1], s->mv[dir][2][1], s->mv[dir][3][1]);
break;
case 3:
*tx = mid_pred(s->mv[dir][idx > 0xd][0], s->mv[dir][1 + (idx > 0xb)][0], s->mv[dir][2 + (idx > 0x7)][0]);
*ty = mid_pred(s->mv[dir][idx > 0xd][1], s->mv[dir][1 + (idx > 0xb)][1], s->mv[dir][2 + (idx > 0x7)][1]);
break;
case 2:
*tx = (s->mv[dir][index2[idx] >> 4][0] + s->mv[dir][index2[idx] & 0xf][0]) / 2;
*ty = (s->mv[dir][index2[idx] >> 4][1] + s->mv[dir][index2[idx] & 0xf][1]) / 2;
break;
default:
return 0;
}
return valid_count;
}
/** Do motion compensation over 1 macroblock
* Mostly adapted hpel_motion and qpel_motion from mpegvideo.c
*/
void ff_vc1_mc_1mv(VC1Context *v, int dir)
{
MpegEncContext *s = &v->s;
H264ChromaContext *h264chroma = &v->h264chroma;
uint8_t *srcY, *srcU, *srcV;
int dxy, mx, my, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y;
int v_edge_pos = s->v_edge_pos >> v->field_mode;
int i;
uint8_t (*luty)[256], (*lutuv)[256];
int use_ic;
if ((!v->field_mode ||
(v->ref_field_type[dir] == 1 && v->cur_field_type == 1)) &&
!v->s.last_picture.f->data[0])
return;
mx = s->mv[dir][0][0];
my = s->mv[dir][0][1];
// store motion vectors for further use in B frames
if (s->pict_type == AV_PICTURE_TYPE_P) {
for (i = 0; i < 4; i++) {
s->current_picture.motion_val[1][s->block_index[i] + v->blocks_off][0] = mx;
s->current_picture.motion_val[1][s->block_index[i] + v->blocks_off][1] = my;
}
}
uvmx = (mx + ((mx & 3) == 3)) >> 1;
uvmy = (my + ((my & 3) == 3)) >> 1;
v->luma_mv[s->mb_x][0] = uvmx;
v->luma_mv[s->mb_x][1] = uvmy;
if (v->field_mode &&
v->cur_field_type != v->ref_field_type[dir]) {
my = my - 2 + 4 * v->cur_field_type;
uvmy = uvmy - 2 + 4 * v->cur_field_type;
}
// fastuvmc shall be ignored for interlaced frame picture
if (v->fastuvmc && (v->fcm != ILACE_FRAME)) {
uvmx = uvmx + ((uvmx < 0) ? (uvmx & 1) : -(uvmx & 1));
uvmy = uvmy + ((uvmy < 0) ? (uvmy & 1) : -(uvmy & 1));
}
if (!dir) {
if (v->field_mode && (v->cur_field_type != v->ref_field_type[dir]) && v->second_field) {
srcY = s->current_picture.f->data[0];
srcU = s->current_picture.f->data[1];
srcV = s->current_picture.f->data[2];
luty = v->curr_luty;
lutuv = v->curr_lutuv;
use_ic = *v->curr_use_ic;
} else {
srcY = s->last_picture.f->data[0];
srcU = s->last_picture.f->data[1];
srcV = s->last_picture.f->data[2];
luty = v->last_luty;
lutuv = v->last_lutuv;
use_ic = v->last_use_ic;
}
} else {
srcY = s->next_picture.f->data[0];
srcU = s->next_picture.f->data[1];
srcV = s->next_picture.f->data[2];
luty = v->next_luty;
lutuv = v->next_lutuv;
use_ic = v->next_use_ic;
}
if (!srcY || !srcU) {
av_log(v->s.avctx, AV_LOG_ERROR, "Referenced frame missing.\n");
return;
}
src_x = s->mb_x * 16 + (mx >> 2);
src_y = s->mb_y * 16 + (my >> 2);
uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
if (v->profile != PROFILE_ADVANCED) {
src_x = av_clip( src_x, -16, s->mb_width * 16);
src_y = av_clip( src_y, -16, s->mb_height * 16);
uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8);
uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8);
} else {
src_x = av_clip( src_x, -17, s->avctx->coded_width);
src_y = av_clip( src_y, -18, s->avctx->coded_height + 1);
uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
}
srcY += src_y * s->linesize + src_x;
srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
if (v->field_mode && v->ref_field_type[dir]) {
srcY += s->current_picture_ptr->f->linesize[0];
srcU += s->current_picture_ptr->f->linesize[1];
srcV += s->current_picture_ptr->f->linesize[2];
}
/* for grayscale we should not try to read from unknown area */
if (CONFIG_GRAY && s->avctx->flags & CODEC_FLAG_GRAY) {
srcU = s->sc.edge_emu_buffer + 18 * s->linesize;
srcV = s->sc.edge_emu_buffer + 18 * s->linesize;
}
if (v->rangeredfrm || use_ic
|| s->h_edge_pos < 22 || v_edge_pos < 22
|| (unsigned)(src_x - s->mspel) > s->h_edge_pos - (mx&3) - 16 - s->mspel * 3
|| (unsigned)(src_y - 1) > v_edge_pos - (my&3) - 16 - 3) {
uint8_t *ubuf = s->sc.edge_emu_buffer + 19 * s->linesize;
uint8_t *vbuf = ubuf + 9 * s->uvlinesize;
const int k = 17 + s->mspel * 2;
srcY -= s->mspel * (1 + s->linesize);
s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, srcY,
s->linesize, s->linesize,
k, k,
src_x - s->mspel, src_y - s->mspel,
s->h_edge_pos, v_edge_pos);
srcY = s->sc.edge_emu_buffer;
s->vdsp.emulated_edge_mc(ubuf, srcU,
s->uvlinesize, s->uvlinesize,
8 + 1, 8 + 1,
uvsrc_x, uvsrc_y,
s->h_edge_pos >> 1, v_edge_pos >> 1);
s->vdsp.emulated_edge_mc(vbuf, srcV,
s->uvlinesize, s->uvlinesize,
8 + 1, 8 + 1,
uvsrc_x, uvsrc_y,
s->h_edge_pos >> 1, v_edge_pos >> 1);
srcU = ubuf;
srcV = vbuf;
/* if we deal with range reduction we need to scale source blocks */
if (v->rangeredfrm) {
vc1_scale_luma(srcY, k, s->linesize);
vc1_scale_chroma(srcU, srcV, 9, s->uvlinesize);
}
/* if we deal with intensity compensation we need to scale source blocks */
if (use_ic) {
vc1_lut_scale_luma(srcY,
luty[v->field_mode ? v->ref_field_type[dir] : ((0 + src_y - s->mspel) & 1)],
luty[v->field_mode ? v->ref_field_type[dir] : ((1 + src_y - s->mspel) & 1)],
k, s->linesize);
vc1_lut_scale_chroma(srcU, srcV,
lutuv[v->field_mode ? v->ref_field_type[dir] : ((0 + uvsrc_y) & 1)],
lutuv[v->field_mode ? v->ref_field_type[dir] : ((1 + uvsrc_y) & 1)],
9, s->uvlinesize);
}
srcY += s->mspel * (1 + s->linesize);
}
if (s->mspel) {
dxy = ((my & 3) << 2) | (mx & 3);
v->vc1dsp.put_vc1_mspel_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, v->rnd);
} else { // hpel mc - always used for luma
dxy = (my & 2) | ((mx & 2) >> 1);
if (!v->rnd)
s->hdsp.put_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
else
s->hdsp.put_no_rnd_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
}
if (CONFIG_GRAY && s->avctx->flags & CODEC_FLAG_GRAY)
return;
/* Chroma MC always uses qpel bilinear */
uvmx = (uvmx & 3) << 1;
uvmy = (uvmy & 3) << 1;
if (!v->rnd) {
h264chroma->put_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
h264chroma->put_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
} else {
v->vc1dsp.put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
v->vc1dsp.put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
}
}
/** Do motion compensation for 4-MV macroblock - luminance block
*/
void ff_vc1_mc_4mv_luma(VC1Context *v, int n, int dir, int avg)
{
MpegEncContext *s = &v->s;
uint8_t *srcY;
int dxy, mx, my, src_x, src_y;
int off;
int fieldmv = (v->fcm == ILACE_FRAME) ? v->blk_mv_type[s->block_index[n]] : 0;
int v_edge_pos = s->v_edge_pos >> v->field_mode;
uint8_t (*luty)[256];
int use_ic;
if ((!v->field_mode ||
(v->ref_field_type[dir] == 1 && v->cur_field_type == 1)) &&
!v->s.last_picture.f->data[0])
return;
mx = s->mv[dir][n][0];
my = s->mv[dir][n][1];
if (!dir) {
if (v->field_mode && (v->cur_field_type != v->ref_field_type[dir]) && v->second_field) {
srcY = s->current_picture.f->data[0];
luty = v->curr_luty;
use_ic = *v->curr_use_ic;
} else {
srcY = s->last_picture.f->data[0];
luty = v->last_luty;
use_ic = v->last_use_ic;
}
} else {
srcY = s->next_picture.f->data[0];
luty = v->next_luty;
use_ic = v->next_use_ic;
}
if (!srcY) {
av_log(v->s.avctx, AV_LOG_ERROR, "Referenced frame missing.\n");
return;
}
if (v->field_mode) {
if (v->cur_field_type != v->ref_field_type[dir])
my = my - 2 + 4 * v->cur_field_type;
}
if (s->pict_type == AV_PICTURE_TYPE_P && n == 3 && v->field_mode) {
int opp_count = get_luma_mv(v, 0,
&s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][0],
&s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][1]);
int k, f = opp_count > 2;
for (k = 0; k < 4; k++)
v->mv_f[1][s->block_index[k] + v->blocks_off] = f;
}
if (v->fcm == ILACE_FRAME) { // not sure if needed for other types of picture
int qx, qy;
int width = s->avctx->coded_width;
int height = s->avctx->coded_height >> 1;
if (s->pict_type == AV_PICTURE_TYPE_P) {
s->current_picture.motion_val[1][s->block_index[n] + v->blocks_off][0] = mx;
s->current_picture.motion_val[1][s->block_index[n] + v->blocks_off][1] = my;
}
qx = (s->mb_x * 16) + (mx >> 2);
qy = (s->mb_y * 8) + (my >> 3);
if (qx < -17)
mx -= 4 * (qx + 17);
else if (qx > width)
mx -= 4 * (qx - width);
if (qy < -18)
my -= 8 * (qy + 18);
else if (qy > height + 1)
my -= 8 * (qy - height - 1);
}
if ((v->fcm == ILACE_FRAME) && fieldmv)
off = ((n > 1) ? s->linesize : 0) + (n & 1) * 8;
else
off = s->linesize * 4 * (n & 2) + (n & 1) * 8;
src_x = s->mb_x * 16 + (n & 1) * 8 + (mx >> 2);
if (!fieldmv)
src_y = s->mb_y * 16 + (n & 2) * 4 + (my >> 2);
else
src_y = s->mb_y * 16 + ((n > 1) ? 1 : 0) + (my >> 2);
if (v->profile != PROFILE_ADVANCED) {
src_x = av_clip(src_x, -16, s->mb_width * 16);
src_y = av_clip(src_y, -16, s->mb_height * 16);
} else {
src_x = av_clip(src_x, -17, s->avctx->coded_width);
if (v->fcm == ILACE_FRAME) {
if (src_y & 1)
src_y = av_clip(src_y, -17, s->avctx->coded_height + 1);
else
src_y = av_clip(src_y, -18, s->avctx->coded_height);
} else {
src_y = av_clip(src_y, -18, s->avctx->coded_height + 1);
}
}
srcY += src_y * s->linesize + src_x;
if (v->field_mode && v->ref_field_type[dir])
srcY += s->current_picture_ptr->f->linesize[0];
if (fieldmv) {
if (!(src_y & 1))
v_edge_pos--;
else
src_y -= (src_y < 4);
}
if (v->rangeredfrm || use_ic
|| s->h_edge_pos < 13 || v_edge_pos < 23
|| (unsigned)(src_x - s->mspel) > s->h_edge_pos - (mx & 3) - 8 - s->mspel * 2
|| (unsigned)(src_y - (s->mspel << fieldmv)) > v_edge_pos - (my & 3) - ((8 + s->mspel * 2) << fieldmv)) {
const int k = 9 + s->mspel * 2;
srcY -= s->mspel * (1 + (s->linesize << fieldmv));
/* check emulate edge stride and offset */
s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, srcY,
s->linesize, s->linesize,
k, k << fieldmv,
src_x - s->mspel, src_y - (s->mspel << fieldmv),
s->h_edge_pos, v_edge_pos);
srcY = s->sc.edge_emu_buffer;
/* if we deal with range reduction we need to scale source blocks */
if (v->rangeredfrm) {
vc1_scale_luma(srcY, k, s->linesize << fieldmv);
}
/* if we deal with intensity compensation we need to scale source blocks */
if (use_ic) {
vc1_lut_scale_luma(srcY,
luty[v->field_mode ? v->ref_field_type[dir] : (((0<<fieldmv)+src_y - (s->mspel << fieldmv)) & 1)],
luty[v->field_mode ? v->ref_field_type[dir] : (((1<<fieldmv)+src_y - (s->mspel << fieldmv)) & 1)],
k, s->linesize << fieldmv);
}
srcY += s->mspel * (1 + (s->linesize << fieldmv));
}
if (s->mspel) {
dxy = ((my & 3) << 2) | (mx & 3);
if (avg)
v->vc1dsp.avg_vc1_mspel_pixels_tab[1][dxy](s->dest[0] + off, srcY, s->linesize << fieldmv, v->rnd);
else
v->vc1dsp.put_vc1_mspel_pixels_tab[1][dxy](s->dest[0] + off, srcY, s->linesize << fieldmv, v->rnd);
} else { // hpel mc - always used for luma
dxy = (my & 2) | ((mx & 2) >> 1);
if (!v->rnd)
s->hdsp.put_pixels_tab[1][dxy](s->dest[0] + off, srcY, s->linesize, 8);
else
s->hdsp.put_no_rnd_pixels_tab[1][dxy](s->dest[0] + off, srcY, s->linesize, 8);
}
}
/** Do motion compensation for 4-MV macroblock - both chroma blocks
*/
void ff_vc1_mc_4mv_chroma(VC1Context *v, int dir)
{
MpegEncContext *s = &v->s;
H264ChromaContext *h264chroma = &v->h264chroma;
uint8_t *srcU, *srcV;
int uvmx, uvmy, uvsrc_x, uvsrc_y;
int16_t tx, ty;
int chroma_ref_type;
int v_edge_pos = s->v_edge_pos >> v->field_mode;
uint8_t (*lutuv)[256];
int use_ic;
if (!v->field_mode && !v->s.last_picture.f->data[0])
return;
if (CONFIG_GRAY && s->avctx->flags & CODEC_FLAG_GRAY)
return;
/* calculate chroma MV vector from four luma MVs */
if (!v->field_mode || !v->numref) {
int valid_count = get_chroma_mv(v, dir, &tx, &ty);
if (!valid_count) {
s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][0] = 0;
s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][1] = 0;
v->luma_mv[s->mb_x][0] = v->luma_mv[s->mb_x][1] = 0;
return; //no need to do MC for intra blocks
}
chroma_ref_type = v->ref_field_type[dir];
} else {
int opp_count = get_luma_mv(v, dir, &tx, &ty);
chroma_ref_type = v->cur_field_type ^ (opp_count > 2);
}
if (v->field_mode && chroma_ref_type == 1 && v->cur_field_type == 1 && !v->s.last_picture.f->data[0])
return;
s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][0] = tx;
s->current_picture.motion_val[1][s->block_index[0] + v->blocks_off][1] = ty;
uvmx = (tx + ((tx & 3) == 3)) >> 1;
uvmy = (ty + ((ty & 3) == 3)) >> 1;
v->luma_mv[s->mb_x][0] = uvmx;
v->luma_mv[s->mb_x][1] = uvmy;
if (v->fastuvmc) {
uvmx = uvmx + ((uvmx < 0) ? (uvmx & 1) : -(uvmx & 1));
uvmy = uvmy + ((uvmy < 0) ? (uvmy & 1) : -(uvmy & 1));
}
// Field conversion bias
if (v->cur_field_type != chroma_ref_type)
uvmy += 2 - 4 * chroma_ref_type;
uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
if (v->profile != PROFILE_ADVANCED) {
uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8);
uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8);
} else {
uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
}
if (!dir) {
if (v->field_mode && (v->cur_field_type != chroma_ref_type) && v->second_field) {
srcU = s->current_picture.f->data[1];
srcV = s->current_picture.f->data[2];
lutuv = v->curr_lutuv;
use_ic = *v->curr_use_ic;
} else {
srcU = s->last_picture.f->data[1];
srcV = s->last_picture.f->data[2];
lutuv = v->last_lutuv;
use_ic = v->last_use_ic;
}
} else {
srcU = s->next_picture.f->data[1];
srcV = s->next_picture.f->data[2];
lutuv = v->next_lutuv;
use_ic = v->next_use_ic;
}
if (!srcU) {
av_log(v->s.avctx, AV_LOG_ERROR, "Referenced frame missing.\n");
return;
}
srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
if (v->field_mode) {
if (chroma_ref_type) {
srcU += s->current_picture_ptr->f->linesize[1];
srcV += s->current_picture_ptr->f->linesize[2];
}
}
if (v->rangeredfrm || use_ic
|| s->h_edge_pos < 18 || v_edge_pos < 18
|| (unsigned)uvsrc_x > (s->h_edge_pos >> 1) - 9
|| (unsigned)uvsrc_y > (v_edge_pos >> 1) - 9) {
s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, srcU,
s->uvlinesize, s->uvlinesize,
8 + 1, 8 + 1, uvsrc_x, uvsrc_y,
s->h_edge_pos >> 1, v_edge_pos >> 1);
s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer + 16, srcV,
s->uvlinesize, s->uvlinesize,
8 + 1, 8 + 1, uvsrc_x, uvsrc_y,
s->h_edge_pos >> 1, v_edge_pos >> 1);
srcU = s->sc.edge_emu_buffer;
srcV = s->sc.edge_emu_buffer + 16;
/* if we deal with range reduction we need to scale source blocks */
if (v->rangeredfrm) {
vc1_scale_chroma(srcU, srcV, 9, s->uvlinesize);
}
/* if we deal with intensity compensation we need to scale source blocks */
if (use_ic) {
vc1_lut_scale_chroma(srcU, srcV,
lutuv[v->field_mode ? chroma_ref_type : ((0 + uvsrc_y) & 1)],
lutuv[v->field_mode ? chroma_ref_type : ((1 + uvsrc_y) & 1)],
9, s->uvlinesize);
}
}
/* Chroma MC always uses qpel bilinear */
uvmx = (uvmx & 3) << 1;
uvmy = (uvmy & 3) << 1;
if (!v->rnd) {
h264chroma->put_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
h264chroma->put_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
} else {
v->vc1dsp.put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
v->vc1dsp.put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
}
}
/** Do motion compensation for 4-MV interlaced frame chroma macroblock (both U and V)
*/
void ff_vc1_mc_4mv_chroma4(VC1Context *v, int dir, int dir2, int avg)
{
MpegEncContext *s = &v->s;
H264ChromaContext *h264chroma = &v->h264chroma;
uint8_t *srcU, *srcV;
int uvsrc_x, uvsrc_y;
int uvmx_field[4], uvmy_field[4];
int i, off, tx, ty;
int fieldmv = v->blk_mv_type[s->block_index[0]];
static const uint8_t s_rndtblfield[16] = { 0, 0, 1, 2, 4, 4, 5, 6, 2, 2, 3, 8, 6, 6, 7, 12 };
int v_dist = fieldmv ? 1 : 4; // vertical offset for lower sub-blocks
int v_edge_pos = s->v_edge_pos >> 1;
int use_ic;
uint8_t (*lutuv)[256];
if (CONFIG_GRAY && s->avctx->flags & CODEC_FLAG_GRAY)
return;
for (i = 0; i < 4; i++) {
int d = i < 2 ? dir: dir2;
tx = s->mv[d][i][0];
uvmx_field[i] = (tx + ((tx & 3) == 3)) >> 1;
ty = s->mv[d][i][1];
if (fieldmv)
uvmy_field[i] = (ty >> 4) * 8 + s_rndtblfield[ty & 0xF];
else
uvmy_field[i] = (ty + ((ty & 3) == 3)) >> 1;
}
for (i = 0; i < 4; i++) {
off = (i & 1) * 4 + ((i & 2) ? v_dist * s->uvlinesize : 0);
uvsrc_x = s->mb_x * 8 + (i & 1) * 4 + (uvmx_field[i] >> 2);
uvsrc_y = s->mb_y * 8 + ((i & 2) ? v_dist : 0) + (uvmy_field[i] >> 2);
// FIXME: implement proper pull-back (see vc1cropmv.c, vc1CROPMV_ChromaPullBack())
uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
if (i < 2 ? dir : dir2) {
srcU = s->next_picture.f->data[1];
srcV = s->next_picture.f->data[2];
lutuv = v->next_lutuv;
use_ic = v->next_use_ic;
} else {
srcU = s->last_picture.f->data[1];
srcV = s->last_picture.f->data[2];
lutuv = v->last_lutuv;
use_ic = v->last_use_ic;
}
if (!srcU)
return;
srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
uvmx_field[i] = (uvmx_field[i] & 3) << 1;
uvmy_field[i] = (uvmy_field[i] & 3) << 1;
if (fieldmv) {
if (!(uvsrc_y & 1))
v_edge_pos = (s->v_edge_pos >> 1) - 1;
else
uvsrc_y -= (uvsrc_y < 2);
}
if (use_ic
|| s->h_edge_pos < 10 || v_edge_pos < (5 << fieldmv)
|| (unsigned)uvsrc_x > (s->h_edge_pos >> 1) - 5
|| (unsigned)uvsrc_y > v_edge_pos - (5 << fieldmv)) {
s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, srcU,
s->uvlinesize, s->uvlinesize,
5, (5 << fieldmv), uvsrc_x, uvsrc_y,
s->h_edge_pos >> 1, v_edge_pos);
s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer + 16, srcV,
s->uvlinesize, s->uvlinesize,
5, (5 << fieldmv), uvsrc_x, uvsrc_y,
s->h_edge_pos >> 1, v_edge_pos);
srcU = s->sc.edge_emu_buffer;
srcV = s->sc.edge_emu_buffer + 16;
/* if we deal with intensity compensation we need to scale source blocks */
if (use_ic) {
vc1_lut_scale_chroma(srcU, srcV,
lutuv[(uvsrc_y + (0 << fieldmv)) & 1],
lutuv[(uvsrc_y + (1 << fieldmv)) & 1],
5, s->uvlinesize << fieldmv);
}
}
if (avg) {
if (!v->rnd) {
h264chroma->avg_h264_chroma_pixels_tab[1](s->dest[1] + off, srcU, s->uvlinesize << fieldmv, 4, uvmx_field[i], uvmy_field[i]);
h264chroma->avg_h264_chroma_pixels_tab[1](s->dest[2] + off, srcV, s->uvlinesize << fieldmv, 4, uvmx_field[i], uvmy_field[i]);
} else {
v->vc1dsp.avg_no_rnd_vc1_chroma_pixels_tab[1](s->dest[1] + off, srcU, s->uvlinesize << fieldmv, 4, uvmx_field[i], uvmy_field[i]);
v->vc1dsp.avg_no_rnd_vc1_chroma_pixels_tab[1](s->dest[2] + off, srcV, s->uvlinesize << fieldmv, 4, uvmx_field[i], uvmy_field[i]);
}
} else {
if (!v->rnd) {
h264chroma->put_h264_chroma_pixels_tab[1](s->dest[1] + off, srcU, s->uvlinesize << fieldmv, 4, uvmx_field[i], uvmy_field[i]);
h264chroma->put_h264_chroma_pixels_tab[1](s->dest[2] + off, srcV, s->uvlinesize << fieldmv, 4, uvmx_field[i], uvmy_field[i]);
} else {
v->vc1dsp.put_no_rnd_vc1_chroma_pixels_tab[1](s->dest[1] + off, srcU, s->uvlinesize << fieldmv, 4, uvmx_field[i], uvmy_field[i]);
v->vc1dsp.put_no_rnd_vc1_chroma_pixels_tab[1](s->dest[2] + off, srcV, s->uvlinesize << fieldmv, 4, uvmx_field[i], uvmy_field[i]);
}
}
}
}
/** Motion compensation for direct or interpolated blocks in B-frames
*/
void ff_vc1_interp_mc(VC1Context *v)
{
MpegEncContext *s = &v->s;
H264ChromaContext *h264chroma = &v->h264chroma;
uint8_t *srcY, *srcU, *srcV;
int dxy, mx, my, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y;
int v_edge_pos = s->v_edge_pos >> v->field_mode;
int use_ic = v->next_use_ic;
if (!v->field_mode && !v->s.next_picture.f->data[0])
return;
mx = s->mv[1][0][0];
my = s->mv[1][0][1];
uvmx = (mx + ((mx & 3) == 3)) >> 1;
uvmy = (my + ((my & 3) == 3)) >> 1;
if (v->field_mode && v->cur_field_type != v->ref_field_type[1]) {
my = my - 2 + 4 * v->cur_field_type;
uvmy = uvmy - 2 + 4 * v->cur_field_type;
}
if (v->fastuvmc) {
uvmx = uvmx + ((uvmx < 0) ? -(uvmx & 1) : (uvmx & 1));
uvmy = uvmy + ((uvmy < 0) ? -(uvmy & 1) : (uvmy & 1));
}
srcY = s->next_picture.f->data[0];
srcU = s->next_picture.f->data[1];
srcV = s->next_picture.f->data[2];
src_x = s->mb_x * 16 + (mx >> 2);
src_y = s->mb_y * 16 + (my >> 2);
uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
if (v->profile != PROFILE_ADVANCED) {
src_x = av_clip( src_x, -16, s->mb_width * 16);
src_y = av_clip( src_y, -16, s->mb_height * 16);
uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8);
uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8);
} else {
src_x = av_clip( src_x, -17, s->avctx->coded_width);
src_y = av_clip( src_y, -18, s->avctx->coded_height + 1);
uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1);
uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1);
}
srcY += src_y * s->linesize + src_x;
srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
if (v->field_mode && v->ref_field_type[1]) {
srcY += s->current_picture_ptr->f->linesize[0];
srcU += s->current_picture_ptr->f->linesize[1];
srcV += s->current_picture_ptr->f->linesize[2];
}
/* for grayscale we should not try to read from unknown area */
if (CONFIG_GRAY && s->avctx->flags & CODEC_FLAG_GRAY) {
srcU = s->sc.edge_emu_buffer + 18 * s->linesize;
srcV = s->sc.edge_emu_buffer + 18 * s->linesize;
}
if (v->rangeredfrm || s->h_edge_pos < 22 || v_edge_pos < 22 || use_ic
|| (unsigned)(src_x - 1) > s->h_edge_pos - (mx & 3) - 16 - 3
|| (unsigned)(src_y - 1) > v_edge_pos - (my & 3) - 16 - 3) {
uint8_t *ubuf = s->sc.edge_emu_buffer + 19 * s->linesize;
uint8_t *vbuf = ubuf + 9 * s->uvlinesize;
const int k = 17 + s->mspel * 2;
srcY -= s->mspel * (1 + s->linesize);
s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, srcY,
s->linesize, s->linesize,
k, k,
src_x - s->mspel, src_y - s->mspel,
s->h_edge_pos, v_edge_pos);
srcY = s->sc.edge_emu_buffer;
s->vdsp.emulated_edge_mc(ubuf, srcU,
s->uvlinesize, s->uvlinesize,
8 + 1, 8 + 1,
uvsrc_x, uvsrc_y,
s->h_edge_pos >> 1, v_edge_pos >> 1);
s->vdsp.emulated_edge_mc(vbuf, srcV,
s->uvlinesize, s->uvlinesize,
8 + 1, 8 + 1,
uvsrc_x, uvsrc_y,
s->h_edge_pos >> 1, v_edge_pos >> 1);
srcU = ubuf;
srcV = vbuf;
/* if we deal with range reduction we need to scale source blocks */
if (v->rangeredfrm) {
vc1_scale_luma(srcY, k, s->linesize);
vc1_scale_chroma(srcU, srcV, 9, s->uvlinesize);
}
if (use_ic) {
uint8_t (*luty )[256] = v->next_luty;
uint8_t (*lutuv)[256] = v->next_lutuv;
vc1_lut_scale_luma(srcY,
luty[v->field_mode ? v->ref_field_type[1] : ((0+src_y - s->mspel) & 1)],
luty[v->field_mode ? v->ref_field_type[1] : ((1+src_y - s->mspel) & 1)],
k, s->linesize);
vc1_lut_scale_chroma(srcU, srcV,
lutuv[v->field_mode ? v->ref_field_type[1] : ((0+uvsrc_y) & 1)],
lutuv[v->field_mode ? v->ref_field_type[1] : ((1+uvsrc_y) & 1)],
9, s->uvlinesize);
}
srcY += s->mspel * (1 + s->linesize);
}
if (s->mspel) {
dxy = ((my & 3) << 2) | (mx & 3);
v->vc1dsp.avg_vc1_mspel_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, v->rnd);
} else { // hpel mc
dxy = (my & 2) | ((mx & 2) >> 1);
if (!v->rnd)
s->hdsp.avg_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
else
s->hdsp.avg_no_rnd_pixels_tab[dxy](s->dest[0], srcY, s->linesize, 16);
}
if (CONFIG_GRAY && s->avctx->flags & CODEC_FLAG_GRAY)
return;
/* Chroma MC always uses qpel blilinear */
uvmx = (uvmx & 3) << 1;
uvmy = (uvmy & 3) << 1;
if (!v->rnd) {
h264chroma->avg_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
h264chroma->avg_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
} else {
v->vc1dsp.avg_no_rnd_vc1_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
v->vc1dsp.avg_no_rnd_vc1_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
}
}