2 * Copyright (C) 2004 Michael Niedermayer <michaelni@gmx.at>
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 #include "libavutil/intmath.h"
22 #include "libavutil/log.h"
23 #include "libavutil/opt.h"
31 #include "rangecoder.h"
36 void ff_snow_inner_add_yblock(const uint8_t *obmc, const int obmc_stride, uint8_t * * block, int b_w, int b_h,
37 int src_x, int src_y, int src_stride, slice_buffer * sb, int add, uint8_t * dst8){
41 //FIXME ugly misuse of obmc_stride
42 const uint8_t *obmc1= obmc + y*obmc_stride;
43 const uint8_t *obmc2= obmc1+ (obmc_stride>>1);
44 const uint8_t *obmc3= obmc1+ obmc_stride*(obmc_stride>>1);
45 const uint8_t *obmc4= obmc3+ (obmc_stride>>1);
46 dst = slice_buffer_get_line(sb, src_y + y);
48 int v= obmc1[x] * block[3][x + y*src_stride]
49 +obmc2[x] * block[2][x + y*src_stride]
50 +obmc3[x] * block[1][x + y*src_stride]
51 +obmc4[x] * block[0][x + y*src_stride];
53 v <<= 8 - LOG2_OBMC_MAX;
59 v = (v + (1<<(FRAC_BITS-1))) >> FRAC_BITS;
60 if(v&(~255)) v= ~(v>>31);
61 dst8[x + y*src_stride] = v;
69 int ff_snow_get_buffer(SnowContext *s, AVFrame *frame)
73 frame->width = s->avctx->width + 2 * EDGE_WIDTH;
74 frame->height = s->avctx->height + 2 * EDGE_WIDTH;
75 if ((ret = ff_get_buffer(s->avctx, frame, AV_GET_BUFFER_FLAG_REF)) < 0)
77 for (i = 0; frame->data[i]; i++) {
78 int offset = (EDGE_WIDTH >> (i ? s->chroma_v_shift : 0)) *
80 (EDGE_WIDTH >> (i ? s->chroma_h_shift : 0));
81 frame->data[i] += offset;
83 frame->width = s->avctx->width;
84 frame->height = s->avctx->height;
89 void ff_snow_reset_contexts(SnowContext *s){ //FIXME better initial contexts
90 int plane_index, level, orientation;
92 for(plane_index=0; plane_index<3; plane_index++){
93 for(level=0; level<MAX_DECOMPOSITIONS; level++){
94 for(orientation=level ? 1:0; orientation<4; orientation++){
95 memset(s->plane[plane_index].band[level][orientation].state, MID_STATE, sizeof(s->plane[plane_index].band[level][orientation].state));
99 memset(s->header_state, MID_STATE, sizeof(s->header_state));
100 memset(s->block_state, MID_STATE, sizeof(s->block_state));
103 int ff_snow_alloc_blocks(SnowContext *s){
104 int w= FF_CEIL_RSHIFT(s->avctx->width, LOG2_MB_SIZE);
105 int h= FF_CEIL_RSHIFT(s->avctx->height, LOG2_MB_SIZE);
111 s->block= av_mallocz_array(w * h, sizeof(BlockNode) << (s->block_max_depth*2));
113 return AVERROR(ENOMEM);
118 static av_cold void init_qexp(void){
122 for(i=0; i<QROOT; i++){
123 ff_qexp[i]= lrintf(v);
124 v *= pow(2, 1.0 / QROOT);
127 static void mc_block(Plane *p, uint8_t *dst, const uint8_t *src, int stride, int b_w, int b_h, int dx, int dy){
128 static const uint8_t weight[64]={
139 static const uint8_t brane[256]={
140 0x00,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x11,0x12,0x12,0x12,0x12,0x12,0x12,0x12,
141 0x04,0x05,0xcc,0xcc,0xcc,0xcc,0xcc,0x41,0x15,0x16,0xcc,0xcc,0xcc,0xcc,0xcc,0x52,
142 0x04,0xcc,0x05,0xcc,0xcc,0xcc,0x41,0xcc,0x15,0xcc,0x16,0xcc,0xcc,0xcc,0x52,0xcc,
143 0x04,0xcc,0xcc,0x05,0xcc,0x41,0xcc,0xcc,0x15,0xcc,0xcc,0x16,0xcc,0x52,0xcc,0xcc,
144 0x04,0xcc,0xcc,0xcc,0x41,0xcc,0xcc,0xcc,0x15,0xcc,0xcc,0xcc,0x16,0xcc,0xcc,0xcc,
145 0x04,0xcc,0xcc,0x41,0xcc,0x05,0xcc,0xcc,0x15,0xcc,0xcc,0x52,0xcc,0x16,0xcc,0xcc,
146 0x04,0xcc,0x41,0xcc,0xcc,0xcc,0x05,0xcc,0x15,0xcc,0x52,0xcc,0xcc,0xcc,0x16,0xcc,
147 0x04,0x41,0xcc,0xcc,0xcc,0xcc,0xcc,0x05,0x15,0x52,0xcc,0xcc,0xcc,0xcc,0xcc,0x16,
148 0x44,0x45,0x45,0x45,0x45,0x45,0x45,0x45,0x55,0x56,0x56,0x56,0x56,0x56,0x56,0x56,
149 0x48,0x49,0xcc,0xcc,0xcc,0xcc,0xcc,0x85,0x59,0x5A,0xcc,0xcc,0xcc,0xcc,0xcc,0x96,
150 0x48,0xcc,0x49,0xcc,0xcc,0xcc,0x85,0xcc,0x59,0xcc,0x5A,0xcc,0xcc,0xcc,0x96,0xcc,
151 0x48,0xcc,0xcc,0x49,0xcc,0x85,0xcc,0xcc,0x59,0xcc,0xcc,0x5A,0xcc,0x96,0xcc,0xcc,
152 0x48,0xcc,0xcc,0xcc,0x49,0xcc,0xcc,0xcc,0x59,0xcc,0xcc,0xcc,0x96,0xcc,0xcc,0xcc,
153 0x48,0xcc,0xcc,0x85,0xcc,0x49,0xcc,0xcc,0x59,0xcc,0xcc,0x96,0xcc,0x5A,0xcc,0xcc,
154 0x48,0xcc,0x85,0xcc,0xcc,0xcc,0x49,0xcc,0x59,0xcc,0x96,0xcc,0xcc,0xcc,0x5A,0xcc,
155 0x48,0x85,0xcc,0xcc,0xcc,0xcc,0xcc,0x49,0x59,0x96,0xcc,0xcc,0xcc,0xcc,0xcc,0x5A,
158 static const uint8_t needs[16]={
166 int16_t tmpIt [64*(32+HTAPS_MAX)];
167 uint8_t tmp2t[3][64*(32+HTAPS_MAX)];
168 int16_t *tmpI= tmpIt;
169 uint8_t *tmp2= tmp2t[0];
170 const uint8_t *hpel[11];
171 av_assert2(dx<16 && dy<16);
172 r= brane[dx + 16*dy]&15;
173 l= brane[dx + 16*dy]>>4;
175 b= needs[l] | needs[r];
180 for(y=0; y < b_h+HTAPS_MAX-1; y++){
181 for(x=0; x < b_w; x++){
182 int a_1=src[x + HTAPS_MAX/2-4];
183 int a0= src[x + HTAPS_MAX/2-3];
184 int a1= src[x + HTAPS_MAX/2-2];
185 int a2= src[x + HTAPS_MAX/2-1];
186 int a3= src[x + HTAPS_MAX/2+0];
187 int a4= src[x + HTAPS_MAX/2+1];
188 int a5= src[x + HTAPS_MAX/2+2];
189 int a6= src[x + HTAPS_MAX/2+3];
191 if(!p || p->fast_mc){
192 am= 20*(a2+a3) - 5*(a1+a4) + (a0+a5);
196 am= p->hcoeff[0]*(a2+a3) + p->hcoeff[1]*(a1+a4) + p->hcoeff[2]*(a0+a5) + p->hcoeff[3]*(a_1+a6);
201 if(am&(~255)) am= ~(am>>31);
210 src += HTAPS_MAX/2 - 1;
214 for(y=0; y < b_h; y++){
215 for(x=0; x < b_w+1; x++){
216 int a_1=src[x + (HTAPS_MAX/2-4)*stride];
217 int a0= src[x + (HTAPS_MAX/2-3)*stride];
218 int a1= src[x + (HTAPS_MAX/2-2)*stride];
219 int a2= src[x + (HTAPS_MAX/2-1)*stride];
220 int a3= src[x + (HTAPS_MAX/2+0)*stride];
221 int a4= src[x + (HTAPS_MAX/2+1)*stride];
222 int a5= src[x + (HTAPS_MAX/2+2)*stride];
223 int a6= src[x + (HTAPS_MAX/2+3)*stride];
226 am= (20*(a2+a3) - 5*(a1+a4) + (a0+a5) + 16)>>5;
228 am= (p->hcoeff[0]*(a2+a3) + p->hcoeff[1]*(a1+a4) + p->hcoeff[2]*(a0+a5) + p->hcoeff[3]*(a_1+a6) + 32)>>6;
230 if(am&(~255)) am= ~(am>>31);
238 src += stride*(HTAPS_MAX/2 - 1);
242 for(y=0; y < b_h; y++){
243 for(x=0; x < b_w; x++){
244 int a_1=tmpI[x + (HTAPS_MAX/2-4)*64];
245 int a0= tmpI[x + (HTAPS_MAX/2-3)*64];
246 int a1= tmpI[x + (HTAPS_MAX/2-2)*64];
247 int a2= tmpI[x + (HTAPS_MAX/2-1)*64];
248 int a3= tmpI[x + (HTAPS_MAX/2+0)*64];
249 int a4= tmpI[x + (HTAPS_MAX/2+1)*64];
250 int a5= tmpI[x + (HTAPS_MAX/2+2)*64];
251 int a6= tmpI[x + (HTAPS_MAX/2+3)*64];
254 am= (20*(a2+a3) - 5*(a1+a4) + (a0+a5) + 512)>>10;
256 am= (p->hcoeff[0]*(a2+a3) + p->hcoeff[1]*(a1+a4) + p->hcoeff[2]*(a0+a5) + p->hcoeff[3]*(a_1+a6) + 2048)>>12;
257 if(am&(~255)) am= ~(am>>31);
266 hpel[ 1]= tmp2t[0] + 64*(HTAPS_MAX/2-1);
271 hpel[ 6]= tmp2t[1] + 1;
273 hpel[ 8]= src + stride;
274 hpel[ 9]= hpel[1] + 64;
275 hpel[10]= hpel[8] + 1;
277 #define MC_STRIDE(x) (needs[x] ? 64 : stride)
280 int dxy = dx / 8 + dy / 8 * 4;
281 const uint8_t *src1 = hpel[dxy ];
282 const uint8_t *src2 = hpel[dxy + 1];
283 const uint8_t *src3 = hpel[dxy + 4];
284 const uint8_t *src4 = hpel[dxy + 5];
285 int stride1 = MC_STRIDE(dxy);
286 int stride2 = MC_STRIDE(dxy + 1);
287 int stride3 = MC_STRIDE(dxy + 4);
288 int stride4 = MC_STRIDE(dxy + 5);
291 for(y=0; y < b_h; y++){
292 for(x=0; x < b_w; x++){
293 dst[x]= ((8-dx)*(8-dy)*src1[x] + dx*(8-dy)*src2[x]+
294 (8-dx)* dy *src3[x] + dx* dy *src4[x]+32)>>6;
303 const uint8_t *src1= hpel[l];
304 const uint8_t *src2= hpel[r];
305 int stride1 = MC_STRIDE(l);
306 int stride2 = MC_STRIDE(r);
307 int a= weight[((dx&7) + (8*(dy&7)))];
309 for(y=0; y < b_h; y++){
310 for(x=0; x < b_w; x++){
311 dst[x]= (a*src1[x] + b*src2[x] + 4)>>3;
320 void ff_snow_pred_block(SnowContext *s, uint8_t *dst, uint8_t *tmp, ptrdiff_t stride, int sx, int sy, int b_w, int b_h, BlockNode *block, int plane_index, int w, int h){
321 if(block->type & BLOCK_INTRA){
323 const unsigned color = block->color[plane_index];
324 const unsigned color4 = color*0x01010101;
326 for(y=0; y < b_h; y++){
327 *(uint32_t*)&dst[0 + y*stride]= color4;
328 *(uint32_t*)&dst[4 + y*stride]= color4;
329 *(uint32_t*)&dst[8 + y*stride]= color4;
330 *(uint32_t*)&dst[12+ y*stride]= color4;
331 *(uint32_t*)&dst[16+ y*stride]= color4;
332 *(uint32_t*)&dst[20+ y*stride]= color4;
333 *(uint32_t*)&dst[24+ y*stride]= color4;
334 *(uint32_t*)&dst[28+ y*stride]= color4;
337 for(y=0; y < b_h; y++){
338 *(uint32_t*)&dst[0 + y*stride]= color4;
339 *(uint32_t*)&dst[4 + y*stride]= color4;
340 *(uint32_t*)&dst[8 + y*stride]= color4;
341 *(uint32_t*)&dst[12+ y*stride]= color4;
344 for(y=0; y < b_h; y++){
345 *(uint32_t*)&dst[0 + y*stride]= color4;
346 *(uint32_t*)&dst[4 + y*stride]= color4;
349 for(y=0; y < b_h; y++){
350 *(uint32_t*)&dst[0 + y*stride]= color4;
353 for(y=0; y < b_h; y++){
354 for(x=0; x < b_w; x++){
355 dst[x + y*stride]= color;
360 uint8_t *src= s->last_picture[block->ref]->data[plane_index];
361 const int scale= plane_index ? (2*s->mv_scale)>>s->chroma_h_shift : 2*s->mv_scale;
362 int mx= block->mx*scale;
363 int my= block->my*scale;
366 const int tab_index= 3 - (b_w>>2) + (b_w>>4);
367 sx += (mx>>4) - (HTAPS_MAX/2-1);
368 sy += (my>>4) - (HTAPS_MAX/2-1);
369 src += sx + sy*stride;
370 if( (unsigned)sx >= FFMAX(w - b_w - (HTAPS_MAX-2), 0)
371 || (unsigned)sy >= FFMAX(h - b_h - (HTAPS_MAX-2), 0)){
372 s->vdsp.emulated_edge_mc(tmp + MB_SIZE, src,
374 b_w+HTAPS_MAX-1, b_h+HTAPS_MAX-1,
379 av_assert2(s->chroma_h_shift == s->chroma_v_shift); // only one mv_scale
381 av_assert2((tab_index>=0 && tab_index<4) || b_w==32);
383 || !(b_w == b_h || 2*b_w == b_h || b_w == 2*b_h)
387 || !s->plane[plane_index].fast_mc )
388 mc_block(&s->plane[plane_index], dst, src, stride, b_w, b_h, dx, dy);
391 for(y=0; y<b_h; y+=16){
392 s->h264qpel.put_h264_qpel_pixels_tab[0][dy+(dx>>2)](dst + y*stride, src + 3 + (y+3)*stride,stride);
393 s->h264qpel.put_h264_qpel_pixels_tab[0][dy+(dx>>2)](dst + 16 + y*stride, src + 19 + (y+3)*stride,stride);
396 s->h264qpel.put_h264_qpel_pixels_tab[tab_index ][dy+(dx>>2)](dst,src + 3 + 3*stride,stride);
398 s->h264qpel.put_h264_qpel_pixels_tab[tab_index+1][dy+(dx>>2)](dst ,src + 3 + 3*stride,stride);
399 s->h264qpel.put_h264_qpel_pixels_tab[tab_index+1][dy+(dx>>2)](dst+b_h,src + 3 + b_h + 3*stride,stride);
401 av_assert2(2*b_w==b_h);
402 s->h264qpel.put_h264_qpel_pixels_tab[tab_index ][dy+(dx>>2)](dst ,src + 3 + 3*stride ,stride);
403 s->h264qpel.put_h264_qpel_pixels_tab[tab_index ][dy+(dx>>2)](dst+b_w*stride,src + 3 + 3*stride+b_w*stride,stride);
408 #define mca(dx,dy,b_w)\
409 static void mc_block_hpel ## dx ## dy ## b_w(uint8_t *dst, const uint8_t *src, ptrdiff_t stride, int h){\
411 mc_block(NULL, dst, src-(HTAPS_MAX/2-1)-(HTAPS_MAX/2-1)*stride, stride, b_w, b_w, dx, dy);\
423 av_cold int ff_snow_common_init(AVCodecContext *avctx){
424 SnowContext *s = avctx->priv_data;
429 s->max_ref_frames=1; //just make sure it's not an invalid value in case of no initial keyframe
431 ff_dsputil_init(&s->dsp, avctx);
432 ff_hpeldsp_init(&s->hdsp, avctx->flags);
433 ff_videodsp_init(&s->vdsp, 8);
434 ff_dwt_init(&s->dwt);
435 ff_h264qpel_init(&s->h264qpel, 8);
438 s->qdsp.put_qpel_pixels_tab [0][dy+dx/4]=\
439 s->qdsp.put_no_rnd_qpel_pixels_tab[0][dy+dx/4]=\
440 s->h264qpel.put_h264_qpel_pixels_tab[0][dy+dx/4];\
441 s->qdsp.put_qpel_pixels_tab [1][dy+dx/4]=\
442 s->qdsp.put_no_rnd_qpel_pixels_tab[1][dy+dx/4]=\
443 s->h264qpel.put_h264_qpel_pixels_tab[1][dy+dx/4];
463 s->hdsp.put_pixels_tab [0][dy/4+dx/8]=\
464 s->hdsp.put_no_rnd_pixels_tab[0][dy/4+dx/8]=\
465 mc_block_hpel ## dx ## dy ## 16;\
466 s->hdsp.put_pixels_tab [1][dy/4+dx/8]=\
467 s->hdsp.put_no_rnd_pixels_tab[1][dy/4+dx/8]=\
468 mc_block_hpel ## dx ## dy ## 8;
477 // dec += FFMAX(s->chroma_h_shift, s->chroma_v_shift);
479 width= s->avctx->width;
480 height= s->avctx->height;
482 FF_ALLOCZ_ARRAY_OR_GOTO(avctx, s->spatial_idwt_buffer, width, height * sizeof(IDWTELEM), fail);
483 FF_ALLOCZ_ARRAY_OR_GOTO(avctx, s->spatial_dwt_buffer, width, height * sizeof(DWTELEM), fail); //FIXME this does not belong here
484 FF_ALLOCZ_ARRAY_OR_GOTO(avctx, s->temp_dwt_buffer, width, sizeof(DWTELEM), fail);
485 FF_ALLOCZ_ARRAY_OR_GOTO(avctx, s->temp_idwt_buffer, width, sizeof(IDWTELEM), fail);
486 FF_ALLOC_ARRAY_OR_GOTO(avctx, s->run_buffer, ((width + 1) >> 1), ((height + 1) >> 1) * sizeof(*s->run_buffer), fail);
488 for(i=0; i<MAX_REF_FRAMES; i++) {
489 for(j=0; j<MAX_REF_FRAMES; j++)
490 ff_scale_mv_ref[i][j] = 256*(i+1)/(j+1);
491 s->last_picture[i] = av_frame_alloc();
492 if (!s->last_picture[i])
496 s->mconly_picture = av_frame_alloc();
497 s->current_picture = av_frame_alloc();
498 if (!s->mconly_picture || !s->current_picture)
503 return AVERROR(ENOMEM);
506 int ff_snow_common_init_after_header(AVCodecContext *avctx) {
507 SnowContext *s = avctx->priv_data;
508 int plane_index, level, orientation;
509 int ret, emu_buf_size;
512 if ((ret = ff_get_buffer(s->avctx, s->mconly_picture,
513 AV_GET_BUFFER_FLAG_REF)) < 0)
515 FF_ALLOCZ_ARRAY_OR_GOTO(avctx, s->scratchbuf, FFMAX(s->mconly_picture->linesize[0], 2*avctx->width+256), 7*MB_SIZE, fail);
516 emu_buf_size = FFMAX(s->mconly_picture->linesize[0], 2*avctx->width+256) * (2 * MB_SIZE + HTAPS_MAX - 1);
517 FF_ALLOC_OR_GOTO(avctx, s->emu_edge_buffer, emu_buf_size, fail);
520 if(s->mconly_picture->format != avctx->pix_fmt) {
521 av_log(avctx, AV_LOG_ERROR, "pixel format changed\n");
522 return AVERROR_INVALIDDATA;
525 for(plane_index=0; plane_index < s->nb_planes; plane_index++){
526 int w= s->avctx->width;
527 int h= s->avctx->height;
530 w>>= s->chroma_h_shift;
531 h>>= s->chroma_v_shift;
533 s->plane[plane_index].width = w;
534 s->plane[plane_index].height= h;
536 for(level=s->spatial_decomposition_count-1; level>=0; level--){
537 for(orientation=level ? 1 : 0; orientation<4; orientation++){
538 SubBand *b= &s->plane[plane_index].band[level][orientation];
540 b->buf= s->spatial_dwt_buffer;
542 b->stride= s->plane[plane_index].width << (s->spatial_decomposition_count - level);
543 b->width = (w + !(orientation&1))>>1;
544 b->height= (h + !(orientation>1))>>1;
546 b->stride_line = 1 << (s->spatial_decomposition_count - level);
552 b->buf_x_offset = (w+1)>>1;
555 b->buf += b->stride>>1;
556 b->buf_y_offset = b->stride_line >> 1;
558 b->ibuf= s->spatial_idwt_buffer + (b->buf - s->spatial_dwt_buffer);
561 b->parent= &s->plane[plane_index].band[level-1][orientation];
562 //FIXME avoid this realloc
563 av_freep(&b->x_coeff);
564 b->x_coeff=av_mallocz_array(((b->width+1) * b->height+1), sizeof(x_and_coeff));
575 return AVERROR(ENOMEM);
578 #define USE_HALFPEL_PLANE 0
580 static int halfpel_interpol(SnowContext *s, uint8_t *halfpel[4][4], AVFrame *frame){
583 for(p=0; p < s->nb_planes; p++){
585 int w= is_chroma ? s->avctx->width >>s->chroma_h_shift : s->avctx->width;
586 int h= is_chroma ? s->avctx->height>>s->chroma_v_shift : s->avctx->height;
587 int ls= frame->linesize[p];
588 uint8_t *src= frame->data[p];
590 halfpel[1][p] = (uint8_t*) av_malloc(ls * (h + 2 * EDGE_WIDTH)) + EDGE_WIDTH * (1 + ls);
591 halfpel[2][p] = (uint8_t*) av_malloc(ls * (h + 2 * EDGE_WIDTH)) + EDGE_WIDTH * (1 + ls);
592 halfpel[3][p] = (uint8_t*) av_malloc(ls * (h + 2 * EDGE_WIDTH)) + EDGE_WIDTH * (1 + ls);
593 if (!halfpel[1][p] || !halfpel[2][p] || !halfpel[3][p])
594 return AVERROR(ENOMEM);
601 halfpel[1][p][i]= (20*(src[i] + src[i+1]) - 5*(src[i-1] + src[i+2]) + (src[i-2] + src[i+3]) + 16 )>>5;
608 halfpel[2][p][i]= (20*(src[i] + src[i+ls]) - 5*(src[i-ls] + src[i+2*ls]) + (src[i-2*ls] + src[i+3*ls]) + 16 )>>5;
616 halfpel[3][p][i]= (20*(src[i] + src[i+ls]) - 5*(src[i-ls] + src[i+2*ls]) + (src[i-2*ls] + src[i+3*ls]) + 16 )>>5;
625 void ff_snow_release_buffer(AVCodecContext *avctx)
627 SnowContext *s = avctx->priv_data;
630 if(s->last_picture[s->max_ref_frames-1]->data[0]){
631 av_frame_unref(s->last_picture[s->max_ref_frames-1]);
633 if(s->halfpel_plane[s->max_ref_frames-1][1+i/3][i%3])
634 av_free(s->halfpel_plane[s->max_ref_frames-1][1+i/3][i%3] - EDGE_WIDTH*(1+s->current_picture->linesize[i%3]));
638 int ff_snow_frame_start(SnowContext *s){
641 int w= s->avctx->width; //FIXME round up to x16 ?
642 int h= s->avctx->height;
644 if (s->current_picture->data[0] && !(s->avctx->flags&CODEC_FLAG_EMU_EDGE)) {
645 s->dsp.draw_edges(s->current_picture->data[0],
646 s->current_picture->linesize[0], w , h ,
647 EDGE_WIDTH , EDGE_WIDTH , EDGE_TOP | EDGE_BOTTOM);
648 if (s->current_picture->data[2]) {
649 s->dsp.draw_edges(s->current_picture->data[1],
650 s->current_picture->linesize[1], w>>s->chroma_h_shift, h>>s->chroma_v_shift,
651 EDGE_WIDTH>>s->chroma_h_shift, EDGE_WIDTH>>s->chroma_v_shift, EDGE_TOP | EDGE_BOTTOM);
652 s->dsp.draw_edges(s->current_picture->data[2],
653 s->current_picture->linesize[2], w>>s->chroma_h_shift, h>>s->chroma_v_shift,
654 EDGE_WIDTH>>s->chroma_h_shift, EDGE_WIDTH>>s->chroma_v_shift, EDGE_TOP | EDGE_BOTTOM);
658 ff_snow_release_buffer(s->avctx);
660 tmp= s->last_picture[s->max_ref_frames-1];
661 for(i=s->max_ref_frames-1; i>0; i--)
662 s->last_picture[i] = s->last_picture[i-1];
663 memmove(s->halfpel_plane+1, s->halfpel_plane, (s->max_ref_frames-1)*sizeof(void*)*4*4);
664 if(USE_HALFPEL_PLANE && s->current_picture->data[0]) {
665 if((ret = halfpel_interpol(s, s->halfpel_plane[0], s->current_picture)) < 0)
668 s->last_picture[0] = s->current_picture;
669 s->current_picture = tmp;
675 for(i=0; i<s->max_ref_frames && s->last_picture[i]->data[0]; i++)
676 if(i && s->last_picture[i-1]->key_frame)
679 if(s->ref_frames==0){
680 av_log(s->avctx,AV_LOG_ERROR, "No reference frames\n");
684 if ((ret = ff_snow_get_buffer(s, s->current_picture)) < 0)
687 s->current_picture->key_frame= s->keyframe;
692 av_cold void ff_snow_common_end(SnowContext *s)
694 int plane_index, level, orientation, i;
696 av_freep(&s->spatial_dwt_buffer);
697 av_freep(&s->temp_dwt_buffer);
698 av_freep(&s->spatial_idwt_buffer);
699 av_freep(&s->temp_idwt_buffer);
700 av_freep(&s->run_buffer);
703 av_freep(&s->m.me.scratchpad);
704 av_freep(&s->m.me.map);
705 av_freep(&s->m.me.score_map);
706 av_freep(&s->m.obmc_scratchpad);
709 av_freep(&s->scratchbuf);
710 av_freep(&s->emu_edge_buffer);
712 for(i=0; i<MAX_REF_FRAMES; i++){
713 av_freep(&s->ref_mvs[i]);
714 av_freep(&s->ref_scores[i]);
715 if(s->last_picture[i]->data[0]) {
716 av_assert0(s->last_picture[i]->data[0] != s->current_picture->data[0]);
718 av_frame_free(&s->last_picture[i]);
721 for(plane_index=0; plane_index < s->nb_planes; plane_index++){
722 for(level=s->spatial_decomposition_count-1; level>=0; level--){
723 for(orientation=level ? 1 : 0; orientation<4; orientation++){
724 SubBand *b= &s->plane[plane_index].band[level][orientation];
726 av_freep(&b->x_coeff);
730 av_frame_free(&s->mconly_picture);
731 av_frame_free(&s->current_picture);