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snow: yuv444 support 

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
tags/n1.0
Michael Niedermayer 13 years ago
parent
13ba872a2a
commit
68c845cdba
4 changed files with 102 additions and 76 deletions
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  1. +10
    -7
      libavcodec/snow.c
  2. +14
    -11
      libavcodec/snow.h
  3. +31
    -22
      libavcodec/snowdec.c
  4. +47
    -36
      libavcodec/snowenc.c

+ 10
- 7
libavcodec/snow.c View File

@@ -328,7 +328,7 @@ void ff_snow_pred_block(SnowContext *s, uint8_t *dst, uint8_t *tmp, int stride,
}
}else{
uint8_t *src= s->last_picture[block->ref].data[plane_index];
const int scale= plane_index ? s->mv_scale : 2*s->mv_scale;
const int scale= plane_index ? (2*s->mv_scale)>>s->chroma_h_shift : 2*s->mv_scale;
int mx= block->mx*scale;
int my= block->my*scale;
const int dx= mx&15;
@@ -342,6 +342,9 @@ void ff_snow_pred_block(SnowContext *s, uint8_t *dst, uint8_t *tmp, int stride,
s->dsp.emulated_edge_mc(tmp + MB_SIZE, src, stride, b_w+HTAPS_MAX-1, b_h+HTAPS_MAX-1, sx, sy, w, h);
src= tmp + MB_SIZE;
}

av_assert2(s->chroma_h_shift == s->chroma_v_shift); // only one mv_scale

// assert(b_w == b_h || 2*b_w == b_h || b_w == 2*b_h);
// assert(!(b_w&(b_w-1)));
assert(b_w>1 && b_h>1);
@@ -513,8 +516,8 @@ static void halfpel_interpol(SnowContext *s, uint8_t *halfpel[4][4], AVFrame *fr

for(p=0; p<3; p++){
int is_chroma= !!p;
int w= s->avctx->width >>is_chroma;
int h= s->avctx->height >>is_chroma;
int w= is_chroma ? s->avctx->width >>s->chroma_h_shift : s->avctx->width;
int h= is_chroma ? s->avctx->height>>s->chroma_v_shift : s->avctx->height;
int ls= frame->linesize[p];
uint8_t *src= frame->data[p];

@@ -573,11 +576,11 @@ int ff_snow_frame_start(SnowContext *s){
s->current_picture.linesize[0], w , h ,
EDGE_WIDTH , EDGE_WIDTH , EDGE_TOP | EDGE_BOTTOM);
s->dsp.draw_edges(s->current_picture.data[1],
s->current_picture.linesize[1], w>>1, h>>1,
EDGE_WIDTH/2, EDGE_WIDTH/2, EDGE_TOP | EDGE_BOTTOM);
s->current_picture.linesize[1], w>>s->chroma_h_shift, h>>s->chroma_v_shift,
EDGE_WIDTH>>s->chroma_h_shift, EDGE_WIDTH>>s->chroma_v_shift, EDGE_TOP | EDGE_BOTTOM);
s->dsp.draw_edges(s->current_picture.data[2],
s->current_picture.linesize[2], w>>1, h>>1,
EDGE_WIDTH/2, EDGE_WIDTH/2, EDGE_TOP | EDGE_BOTTOM);
s->current_picture.linesize[2], w>>s->chroma_h_shift, h>>s->chroma_v_shift,
EDGE_WIDTH>>s->chroma_h_shift, EDGE_WIDTH>>s->chroma_v_shift, EDGE_TOP | EDGE_BOTTOM);
}

ff_snow_release_buffer(s->avctx);


+ 14
- 11
libavcodec/snow.h View File

@@ -404,20 +404,21 @@ static av_always_inline void predict_slice(SnowContext *s, IDWTELEM *buf, int pl
const int mb_h= s->b_height << s->block_max_depth;
int x, y, mb_x;
int block_size = MB_SIZE >> s->block_max_depth;
int block_w = plane_index ? block_size/2 : block_size;
const uint8_t *obmc = plane_index ? ff_obmc_tab[s->block_max_depth+1] : ff_obmc_tab[s->block_max_depth];
const int obmc_stride= plane_index ? block_size : 2*block_size;
int block_w = plane_index ? block_size>>s->chroma_h_shift : block_size;
int block_h = plane_index ? block_size>>s->chroma_v_shift : block_size;
const uint8_t *obmc = plane_index ? ff_obmc_tab[s->block_max_depth+s->chroma_h_shift] : ff_obmc_tab[s->block_max_depth];
const int obmc_stride= plane_index ? (2*block_size)>>s->chroma_h_shift : 2*block_size;
int ref_stride= s->current_picture.linesize[plane_index];
uint8_t *dst8= s->current_picture.data[plane_index];
int w= p->width;
int h= p->height;
av_assert2(s->chroma_h_shift == s->chroma_v_shift); // obmc params assume squares
if(s->keyframe || (s->avctx->debug&512)){
if(mb_y==mb_h)
return;

if(add){
for(y=block_w*mb_y; y<FFMIN(h,block_w*(mb_y+1)); y++){
for(y=block_h*mb_y; y<FFMIN(h,block_h*(mb_y+1)); y++){
for(x=0; x<w; x++){
int v= buf[x + y*w] + (128<<FRAC_BITS) + (1<<(FRAC_BITS-1));
v >>= FRAC_BITS;
@@ -426,7 +427,7 @@ static av_always_inline void predict_slice(SnowContext *s, IDWTELEM *buf, int pl
}
}
}else{
for(y=block_w*mb_y; y<FFMIN(h,block_w*(mb_y+1)); y++){
for(y=block_h*mb_y; y<FFMIN(h,block_h*(mb_y+1)); y++){
for(x=0; x<w; x++){
buf[x + y*w]-= 128<<FRAC_BITS;
}
@@ -439,8 +440,8 @@ static av_always_inline void predict_slice(SnowContext *s, IDWTELEM *buf, int pl
for(mb_x=0; mb_x<=mb_w; mb_x++){
add_yblock(s, 0, NULL, buf, dst8, obmc,
block_w*mb_x - block_w/2,
block_w*mb_y - block_w/2,
block_w, block_w,
block_h*mb_y - block_h/2,
block_w, block_h,
w, h,
w, ref_stride, obmc_stride,
mb_x - 1, mb_y - 1,
@@ -460,6 +461,7 @@ static inline void set_blocks(SnowContext *s, int level, int x, int y, int l, in
const int rem_depth= s->block_max_depth - level;
const int index= (x + y*w) << rem_depth;
const int block_w= 1<<rem_depth;
const int block_h= 1<<rem_depth; //FIXME "w!=h"
BlockNode block;
int i,j;

@@ -472,7 +474,7 @@ static inline void set_blocks(SnowContext *s, int level, int x, int y, int l, in
block.type= type;
block.level= level;

for(j=0; j<block_w; j++){
for(j=0; j<block_h; j++){
for(i=0; i<block_w; i++){
s->block[index + i + j*w]= block;
}
@@ -480,10 +482,11 @@ static inline void set_blocks(SnowContext *s, int level, int x, int y, int l, in
}

static inline void init_ref(MotionEstContext *c, uint8_t *src[3], uint8_t *ref[3], uint8_t *ref2[3], int x, int y, int ref_index){
SnowContext *s = c->avctx->priv_data;
const int offset[3]= {
y*c-> stride + x,
((y*c->uvstride + x)>>1),
((y*c->uvstride + x)>>1),
((y*c->uvstride + x)>>s->chroma_h_shift),
((y*c->uvstride + x)>>s->chroma_h_shift),
};
int i;
for(i=0; i<3; i++){


+ 31
- 22
libavcodec/snowdec.c View File

@@ -41,9 +41,10 @@ static av_always_inline void predict_slice_buffered(SnowContext *s, slice_buffer
const int mb_h= s->b_height << s->block_max_depth;
int x, y, mb_x;
int block_size = MB_SIZE >> s->block_max_depth;
int block_w = plane_index ? block_size/2 : block_size;
const uint8_t *obmc = plane_index ? ff_obmc_tab[s->block_max_depth+1] : ff_obmc_tab[s->block_max_depth];
int obmc_stride= plane_index ? block_size : 2*block_size;
int block_w = plane_index ? block_size>>s->chroma_h_shift : block_size;
int block_h = plane_index ? block_size>>s->chroma_v_shift : block_size;
const uint8_t *obmc = plane_index ? ff_obmc_tab[s->block_max_depth+s->chroma_h_shift] : ff_obmc_tab[s->block_max_depth];
int obmc_stride= plane_index ? (2*block_size)>>s->chroma_h_shift : 2*block_size;
int ref_stride= s->current_picture.linesize[plane_index];
uint8_t *dst8= s->current_picture.data[plane_index];
int w= p->width;
@@ -54,7 +55,7 @@ static av_always_inline void predict_slice_buffered(SnowContext *s, slice_buffer
return;

if(add){
for(y=block_w*mb_y; y<FFMIN(h,block_w*(mb_y+1)); y++){
for(y=block_h*mb_y; y<FFMIN(h,block_h*(mb_y+1)); y++){
// DWTELEM * line = slice_buffer_get_line(sb, y);
IDWTELEM * line = sb->line[y];
for(x=0; x<w; x++){
@@ -66,7 +67,7 @@ static av_always_inline void predict_slice_buffered(SnowContext *s, slice_buffer
}
}
}else{
for(y=block_w*mb_y; y<FFMIN(h,block_w*(mb_y+1)); y++){
for(y=block_h*mb_y; y<FFMIN(h,block_h*(mb_y+1)); y++){
// DWTELEM * line = slice_buffer_get_line(sb, y);
IDWTELEM * line = sb->line[y];
for(x=0; x<w; x++){
@@ -82,8 +83,8 @@ static av_always_inline void predict_slice_buffered(SnowContext *s, slice_buffer
for(mb_x=0; mb_x<=mb_w; mb_x++){
add_yblock(s, 1, sb, old_buffer, dst8, obmc,
block_w*mb_x - block_w/2,
block_w*mb_y - block_w/2,
block_w, block_w,
block_h*mb_y - block_h/2,
block_w, block_h,
w, h,
w, ref_stride, obmc_stride,
mb_x - 1, mb_y - 1,
@@ -289,6 +290,18 @@ static int decode_header(SnowContext *s){
s->colorspace_type= get_symbol(&s->c, s->header_state, 0);
s->chroma_h_shift= get_symbol(&s->c, s->header_state, 0);
s->chroma_v_shift= get_symbol(&s->c, s->header_state, 0);

if(s->chroma_h_shift == 1 && s->chroma_v_shift==1){
s->avctx->pix_fmt= PIX_FMT_YUV420P;
}else if(s->chroma_h_shift == 0 && s->chroma_v_shift==0){
s->avctx->pix_fmt= PIX_FMT_YUV444P;
} else {
av_log(s, AV_LOG_ERROR, "unsupported color subsample mode %d %d\n", s->chroma_h_shift, s->chroma_v_shift);
s->chroma_h_shift = s->chroma_v_shift = 1;
s->avctx->pix_fmt= PIX_FMT_YUV420P;
return AVERROR_INVALIDDATA;
}

s->spatial_scalability= get_rac(&s->c, s->header_state);
// s->rate_scalability= get_rac(&s->c, s->header_state);
GET_S(s->max_ref_frames, tmp < (unsigned)MAX_REF_FRAMES)
@@ -334,10 +347,6 @@ static int decode_header(SnowContext *s){
return -1;
}

if (s->chroma_h_shift != 1 || s->chroma_v_shift != 1) {
av_log(s->avctx, AV_LOG_ERROR, "Invalid chroma shift\n");
return AVERROR_PATCHWELCOME;
}

s->qlog += get_symbol(&s->c, s->header_state, 1);
s->mv_scale += get_symbol(&s->c, s->header_state, 1);
@@ -354,8 +363,6 @@ static int decode_header(SnowContext *s){

static av_cold int decode_init(AVCodecContext *avctx)
{
avctx->pix_fmt= PIX_FMT_YUV420P;

ff_snow_common_init(avctx);

return 0;
@@ -452,7 +459,8 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
{
const int mb_h= s->b_height << s->block_max_depth;
const int block_size = MB_SIZE >> s->block_max_depth;
const int block_w = plane_index ? block_size/2 : block_size;
const int block_w = plane_index ? block_size>>s->chroma_h_shift : block_size;
const int block_h = plane_index ? block_size>>s->chroma_v_shift : block_size;
int mb_y;
DWTCompose cs[MAX_DECOMPOSITIONS];
int yd=0, yq=0;
@@ -462,11 +470,12 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
ff_spatial_idwt_buffered_init(cs, &s->sb, w, h, 1, s->spatial_decomposition_type, s->spatial_decomposition_count);
for(mb_y=0; mb_y<=mb_h; mb_y++){

int slice_starty = block_w*mb_y;
int slice_h = block_w*(mb_y+1);
int slice_starty = block_h*mb_y;
int slice_h = block_h*(mb_y+1);

if (!(s->keyframe || s->avctx->debug&512)){
slice_starty = FFMAX(0, slice_starty - (block_w >> 1));
slice_h -= (block_w >> 1);
slice_starty = FFMAX(0, slice_starty - (block_h >> 1));
slice_h -= (block_h >> 1);
}

for(level=0; level<s->spatial_decomposition_count; level++){
@@ -477,11 +486,11 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
int our_mb_start = mb_y;
int our_mb_end = (mb_y + 1);
const int extra= 3;
start_y = (mb_y ? ((block_w * our_mb_start) >> (s->spatial_decomposition_count - level)) + s->spatial_decomposition_count - level + extra: 0);
end_y = (((block_w * our_mb_end) >> (s->spatial_decomposition_count - level)) + s->spatial_decomposition_count - level + extra);
start_y = (mb_y ? ((block_h * our_mb_start) >> (s->spatial_decomposition_count - level)) + s->spatial_decomposition_count - level + extra: 0);
end_y = (((block_h * our_mb_end) >> (s->spatial_decomposition_count - level)) + s->spatial_decomposition_count - level + extra);
if (!(s->keyframe || s->avctx->debug&512)){
start_y = FFMAX(0, start_y - (block_w >> (1+s->spatial_decomposition_count - level)));
end_y = FFMAX(0, end_y - (block_w >> (1+s->spatial_decomposition_count - level)));
start_y = FFMAX(0, start_y - (block_h >> (1+s->spatial_decomposition_count - level)));
end_y = FFMAX(0, end_y - (block_h >> (1+s->spatial_decomposition_count - level)));
}
start_y = FFMIN(b->height, start_y);
end_y = FFMIN(b->height, end_y);


+ 47
- 36
libavcodec/snowenc.c View File

@@ -215,7 +215,7 @@ static av_cold int encode_init(AVCodecContext *avctx)

avctx->coded_frame= &s->current_picture;
switch(avctx->pix_fmt){
// case PIX_FMT_YUV444P:
case PIX_FMT_YUV444P:
// case PIX_FMT_YUV422P:
case PIX_FMT_YUV420P:
// case PIX_FMT_GRAY8:
@@ -323,8 +323,8 @@ static int encode_q_branch(SnowContext *s, int level, int x, int y){
const int stride= s->current_picture.linesize[0];
const int uvstride= s->current_picture.linesize[1];
uint8_t *current_data[3]= { s->input_picture.data[0] + (x + y* stride)*block_w,
s->input_picture.data[1] + (x + y*uvstride)*block_w/2,
s->input_picture.data[2] + (x + y*uvstride)*block_w/2};
s->input_picture.data[1] + ((x*block_w)>>s->chroma_h_shift) + ((y*uvstride*block_w)>>s->chroma_v_shift),
s->input_picture.data[2] + ((x*block_w)>>s->chroma_h_shift) + ((y*uvstride*block_w)>>s->chroma_v_shift)};
int P[10][2];
int16_t last_mv[3][2];
int qpel= !!(s->avctx->flags & CODEC_FLAG_QPEL); //unused
@@ -574,9 +574,10 @@ static int get_dc(SnowContext *s, int mb_x, int mb_y, int plane_index){
int i, x2, y2;
Plane *p= &s->plane[plane_index];
const int block_size = MB_SIZE >> s->block_max_depth;
const int block_w = plane_index ? block_size/2 : block_size;
const uint8_t *obmc = plane_index ? ff_obmc_tab[s->block_max_depth+1] : ff_obmc_tab[s->block_max_depth];
const int obmc_stride= plane_index ? block_size : 2*block_size;
const int block_w = plane_index ? block_size>>s->chroma_h_shift : block_size;
const int block_h = plane_index ? block_size>>s->chroma_v_shift : block_size;
const uint8_t *obmc = plane_index ? ff_obmc_tab[s->block_max_depth+s->chroma_h_shift] : ff_obmc_tab[s->block_max_depth];
const int obmc_stride= plane_index ? (2*block_size)>>s->chroma_h_shift : 2*block_size;
const int ref_stride= s->current_picture.linesize[plane_index];
uint8_t *src= s-> input_picture.data[plane_index];
IDWTELEM *dst= (IDWTELEM*)s->m.obmc_scratchpad + plane_index*block_size*block_size*4; //FIXME change to unsigned
@@ -589,6 +590,8 @@ static int get_dc(SnowContext *s, int mb_x, int mb_y, int plane_index){
int ab=0;
int aa=0;

av_assert2(s->chroma_h_shift == s->chroma_v_shift); //obmc stuff above

b->type|= BLOCK_INTRA;
b->color[plane_index]= 0;
memset(dst, 0, obmc_stride*obmc_stride*sizeof(IDWTELEM));
@@ -597,19 +600,19 @@ static int get_dc(SnowContext *s, int mb_x, int mb_y, int plane_index){
int mb_x2= mb_x + (i &1) - 1;
int mb_y2= mb_y + (i>>1) - 1;
int x= block_w*mb_x2 + block_w/2;
int y= block_w*mb_y2 + block_w/2;
int y= block_h*mb_y2 + block_h/2;

add_yblock(s, 0, NULL, dst + ((i&1)+(i>>1)*obmc_stride)*block_w, NULL, obmc,
x, y, block_w, block_w, w, h, obmc_stride, ref_stride, obmc_stride, mb_x2, mb_y2, 0, 0, plane_index);
add_yblock(s, 0, NULL, dst + (i&1)*block_w + (i>>1)*obmc_stride*block_h, NULL, obmc,
x, y, block_w, block_h, w, h, obmc_stride, ref_stride, obmc_stride, mb_x2, mb_y2, 0, 0, plane_index);

for(y2= FFMAX(y, 0); y2<FFMIN(h, y+block_w); y2++){
for(y2= FFMAX(y, 0); y2<FFMIN(h, y+block_h); y2++){
for(x2= FFMAX(x, 0); x2<FFMIN(w, x+block_w); x2++){
int index= x2-(block_w*mb_x - block_w/2) + (y2-(block_w*mb_y - block_w/2))*obmc_stride;
int index= x2-(block_w*mb_x - block_w/2) + (y2-(block_h*mb_y - block_h/2))*obmc_stride;
int obmc_v= obmc[index];
int d;
if(y<0) obmc_v += obmc[index + block_w*obmc_stride];
if(y<0) obmc_v += obmc[index + block_h*obmc_stride];
if(x<0) obmc_v += obmc[index + block_w];
if(y+block_w>h) obmc_v += obmc[index - block_w*obmc_stride];
if(y+block_h>h) obmc_v += obmc[index - block_h*obmc_stride];
if(x+block_w>w) obmc_v += obmc[index - block_w];
//FIXME precalculate this or simplify it somehow else

@@ -666,8 +669,9 @@ static inline int get_block_bits(SnowContext *s, int x, int y, int w){
static int get_block_rd(SnowContext *s, int mb_x, int mb_y, int plane_index, const uint8_t *obmc_edged){
Plane *p= &s->plane[plane_index];
const int block_size = MB_SIZE >> s->block_max_depth;
const int block_w = plane_index ? block_size/2 : block_size;
const int obmc_stride= plane_index ? block_size : 2*block_size;
const int block_w = plane_index ? block_size>>s->chroma_h_shift : block_size;
const int block_h = plane_index ? block_size>>s->chroma_v_shift : block_size;
const int obmc_stride= plane_index ? (2*block_size)>>s->chroma_h_shift : 2*block_size;
const int ref_stride= s->current_picture.linesize[plane_index];
uint8_t *dst= s->current_picture.data[plane_index];
uint8_t *src= s-> input_picture.data[plane_index];
@@ -682,14 +686,16 @@ static int get_block_rd(SnowContext *s, int mb_x, int mb_y, int plane_index, con
int rate= 0;
const int penalty_factor= get_penalty_factor(s->lambda, s->lambda2, s->avctx->me_cmp);
int sx= block_w*mb_x - block_w/2;
int sy= block_w*mb_y - block_w/2;
int sy= block_h*mb_y - block_h/2;
int x0= FFMAX(0,-sx);
int y0= FFMAX(0,-sy);
int x1= FFMIN(block_w*2, w-sx);
int y1= FFMIN(block_w*2, h-sy);
int y1= FFMIN(block_h*2, h-sy);
int i,x,y;

ff_snow_pred_block(s, cur, tmp, ref_stride, sx, sy, block_w*2, block_w*2, &s->block[mb_x + mb_y*b_stride], plane_index, w, h);
av_assert2(s->chroma_h_shift == s->chroma_v_shift); //obmc and square assumtions below chckinhg only block_w

ff_snow_pred_block(s, cur, tmp, ref_stride, sx, sy, block_w*2, block_h*2, &s->block[mb_x + mb_y*b_stride], plane_index, w, h);

for(y=y0; y<y1; y++){
const uint8_t *obmc1= obmc_edged + y*obmc_stride;
@@ -717,9 +723,9 @@ static int get_block_rd(SnowContext *s, int mb_x, int mb_y, int plane_index, con
else
x0 = block_w;
if(mb_y == 0)
y1 = block_w;
y1 = block_h;
else
y0 = block_w;
y0 = block_h;
for(y=y0; y<y1; y++)
memcpy(dst + sx+x0 + (sy+y)*ref_stride, cur + x0 + y*ref_stride, x1-x0);
}
@@ -765,9 +771,10 @@ static int get_4block_rd(SnowContext *s, int mb_x, int mb_y, int plane_index){
int i, y2;
Plane *p= &s->plane[plane_index];
const int block_size = MB_SIZE >> s->block_max_depth;
const int block_w = plane_index ? block_size/2 : block_size;
const uint8_t *obmc = plane_index ? ff_obmc_tab[s->block_max_depth+1] : ff_obmc_tab[s->block_max_depth];
const int obmc_stride= plane_index ? block_size : 2*block_size;
const int block_w = plane_index ? block_size>>s->chroma_h_shift : block_size;
const int block_h = plane_index ? block_size>>s->chroma_v_shift : block_size;
const uint8_t *obmc = plane_index ? ff_obmc_tab[s->block_max_depth+s->chroma_h_shift] : ff_obmc_tab[s->block_max_depth];
const int obmc_stride= plane_index ? (2*block_size)>>s->chroma_h_shift : 2*block_size;
const int ref_stride= s->current_picture.linesize[plane_index];
uint8_t *dst= s->current_picture.data[plane_index];
uint8_t *src= s-> input_picture.data[plane_index];
@@ -781,31 +788,33 @@ static int get_4block_rd(SnowContext *s, int mb_x, int mb_y, int plane_index){
int rate= 0;
const int penalty_factor= get_penalty_factor(s->lambda, s->lambda2, s->avctx->me_cmp);

av_assert2(s->chroma_h_shift == s->chroma_v_shift); //obmc and square assumtions below

for(i=0; i<9; i++){
int mb_x2= mb_x + (i%3) - 1;
int mb_y2= mb_y + (i/3) - 1;
int x= block_w*mb_x2 + block_w/2;
int y= block_w*mb_y2 + block_w/2;
int y= block_h*mb_y2 + block_h/2;

add_yblock(s, 0, NULL, zero_dst, dst, obmc,
x, y, block_w, block_w, w, h, /*dst_stride*/0, ref_stride, obmc_stride, mb_x2, mb_y2, 1, 1, plane_index);
x, y, block_w, block_h, w, h, /*dst_stride*/0, ref_stride, obmc_stride, mb_x2, mb_y2, 1, 1, plane_index);

//FIXME find a cleaner/simpler way to skip the outside stuff
for(y2= y; y2<0; y2++)
memcpy(dst + x + y2*ref_stride, src + x + y2*ref_stride, block_w);
for(y2= h; y2<y+block_w; y2++)
for(y2= h; y2<y+block_h; y2++)
memcpy(dst + x + y2*ref_stride, src + x + y2*ref_stride, block_w);
if(x<0){
for(y2= y; y2<y+block_w; y2++)
for(y2= y; y2<y+block_h; y2++)
memcpy(dst + x + y2*ref_stride, src + x + y2*ref_stride, -x);
}
if(x+block_w > w){
for(y2= y; y2<y+block_w; y2++)
for(y2= y; y2<y+block_h; y2++)
memcpy(dst + w + y2*ref_stride, src + w + y2*ref_stride, x+block_w - w);
}

assert(block_w== 8 || block_w==16);
distortion += s->dsp.me_cmp[block_w==8](&s->m, src + x + y*ref_stride, dst + x + y*ref_stride, ref_stride, block_w);
distortion += s->dsp.me_cmp[block_w==8](&s->m, src + x + y*ref_stride, dst + x + y*ref_stride, ref_stride, block_h);
}

if(plane_index==0){
@@ -1116,22 +1125,23 @@ static void iterative_me(SnowContext *s){
uint8_t *dst= s->current_picture.data[0];
const int stride= s->current_picture.linesize[0];
const int block_w= MB_SIZE >> s->block_max_depth;
const int block_h= MB_SIZE >> s->block_max_depth;
const int sx= block_w*mb_x - block_w/2;
const int sy= block_w*mb_y - block_w/2;
const int sy= block_h*mb_y - block_h/2;
const int w= s->plane[0].width;
const int h= s->plane[0].height;
int y;

for(y=sy; y<0; y++)
memcpy(dst + sx + y*stride, src + sx + y*stride, block_w*2);
for(y=h; y<sy+block_w*2; y++)
for(y=h; y<sy+block_h*2; y++)
memcpy(dst + sx + y*stride, src + sx + y*stride, block_w*2);
if(sx<0){
for(y=sy; y<sy+block_w*2; y++)
for(y=sy; y<sy+block_h*2; y++)
memcpy(dst + sx + y*stride, src + sx + y*stride, -sx);
}
if(sx+block_w*2 > w){
for(y=sy; y<sy+block_w*2; y++)
for(y=sy; y<sy+block_h*2; y++)
memcpy(dst + w + y*stride, src + w + y*stride, sx+block_w*2 - w);
}
}
@@ -1618,11 +1628,12 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
ff_build_rac_states(c, 0.05*(1LL<<32), 256-8);

for(i=0; i<3; i++){
int shift= !!i;
for(y=0; y<(height>>shift); y++)
int hshift= i ? s->chroma_h_shift : 0;
int vshift= i ? s->chroma_v_shift : 0;
for(y=0; y<(height>>vshift); y++)
memcpy(&s->input_picture.data[i][y * s->input_picture.linesize[i]],
&pict->data[i][y * pict->linesize[i]],
width>>shift);
width>>hshift);
}
s->new_picture = *pict;



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