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 void ff_snow_reset_contexts(SnowContext *s){ //FIXME better initial contexts
70 int plane_index, level, orientation;
72 for(plane_index=0; plane_index<3; plane_index++){
73 for(level=0; level<MAX_DECOMPOSITIONS; level++){
74 for(orientation=level ? 1:0; orientation<4; orientation++){
75 memset(s->plane[plane_index].band[level][orientation].state, MID_STATE, sizeof(s->plane[plane_index].band[level][orientation].state));
79 memset(s->header_state, MID_STATE, sizeof(s->header_state));
80 memset(s->block_state, MID_STATE, sizeof(s->block_state));
83 int ff_snow_alloc_blocks(SnowContext *s){
84 int w= -((-s->avctx->width )>>LOG2_MB_SIZE);
85 int h= -((-s->avctx->height)>>LOG2_MB_SIZE);
91 s->block= av_mallocz(w * h * sizeof(BlockNode) << (s->block_max_depth*2));
95 static void init_qexp(void){
99 for(i=0; i<QROOT; i++){
100 ff_qexp[i]= lrintf(v);
101 v *= pow(2, 1.0 / QROOT);
104 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){
105 static const uint8_t weight[64]={
116 static const uint8_t brane[256]={
117 0x00,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x11,0x12,0x12,0x12,0x12,0x12,0x12,0x12,
118 0x04,0x05,0xcc,0xcc,0xcc,0xcc,0xcc,0x41,0x15,0x16,0xcc,0xcc,0xcc,0xcc,0xcc,0x52,
119 0x04,0xcc,0x05,0xcc,0xcc,0xcc,0x41,0xcc,0x15,0xcc,0x16,0xcc,0xcc,0xcc,0x52,0xcc,
120 0x04,0xcc,0xcc,0x05,0xcc,0x41,0xcc,0xcc,0x15,0xcc,0xcc,0x16,0xcc,0x52,0xcc,0xcc,
121 0x04,0xcc,0xcc,0xcc,0x41,0xcc,0xcc,0xcc,0x15,0xcc,0xcc,0xcc,0x16,0xcc,0xcc,0xcc,
122 0x04,0xcc,0xcc,0x41,0xcc,0x05,0xcc,0xcc,0x15,0xcc,0xcc,0x52,0xcc,0x16,0xcc,0xcc,
123 0x04,0xcc,0x41,0xcc,0xcc,0xcc,0x05,0xcc,0x15,0xcc,0x52,0xcc,0xcc,0xcc,0x16,0xcc,
124 0x04,0x41,0xcc,0xcc,0xcc,0xcc,0xcc,0x05,0x15,0x52,0xcc,0xcc,0xcc,0xcc,0xcc,0x16,
125 0x44,0x45,0x45,0x45,0x45,0x45,0x45,0x45,0x55,0x56,0x56,0x56,0x56,0x56,0x56,0x56,
126 0x48,0x49,0xcc,0xcc,0xcc,0xcc,0xcc,0x85,0x59,0x5A,0xcc,0xcc,0xcc,0xcc,0xcc,0x96,
127 0x48,0xcc,0x49,0xcc,0xcc,0xcc,0x85,0xcc,0x59,0xcc,0x5A,0xcc,0xcc,0xcc,0x96,0xcc,
128 0x48,0xcc,0xcc,0x49,0xcc,0x85,0xcc,0xcc,0x59,0xcc,0xcc,0x5A,0xcc,0x96,0xcc,0xcc,
129 0x48,0xcc,0xcc,0xcc,0x49,0xcc,0xcc,0xcc,0x59,0xcc,0xcc,0xcc,0x96,0xcc,0xcc,0xcc,
130 0x48,0xcc,0xcc,0x85,0xcc,0x49,0xcc,0xcc,0x59,0xcc,0xcc,0x96,0xcc,0x5A,0xcc,0xcc,
131 0x48,0xcc,0x85,0xcc,0xcc,0xcc,0x49,0xcc,0x59,0xcc,0x96,0xcc,0xcc,0xcc,0x5A,0xcc,
132 0x48,0x85,0xcc,0xcc,0xcc,0xcc,0xcc,0x49,0x59,0x96,0xcc,0xcc,0xcc,0xcc,0xcc,0x5A,
135 static const uint8_t needs[16]={
143 int16_t tmpIt [64*(32+HTAPS_MAX)];
144 uint8_t tmp2t[3][64*(32+HTAPS_MAX)];
145 int16_t *tmpI= tmpIt;
146 uint8_t *tmp2= tmp2t[0];
147 const uint8_t *hpel[11];
148 av_assert2(dx<16 && dy<16);
149 r= brane[dx + 16*dy]&15;
150 l= brane[dx + 16*dy]>>4;
152 b= needs[l] | needs[r];
157 for(y=0; y < b_h+HTAPS_MAX-1; y++){
158 for(x=0; x < b_w; x++){
159 int a_1=src[x + HTAPS_MAX/2-4];
160 int a0= src[x + HTAPS_MAX/2-3];
161 int a1= src[x + HTAPS_MAX/2-2];
162 int a2= src[x + HTAPS_MAX/2-1];
163 int a3= src[x + HTAPS_MAX/2+0];
164 int a4= src[x + HTAPS_MAX/2+1];
165 int a5= src[x + HTAPS_MAX/2+2];
166 int a6= src[x + HTAPS_MAX/2+3];
168 if(!p || p->fast_mc){
169 am= 20*(a2+a3) - 5*(a1+a4) + (a0+a5);
173 am= p->hcoeff[0]*(a2+a3) + p->hcoeff[1]*(a1+a4) + p->hcoeff[2]*(a0+a5) + p->hcoeff[3]*(a_1+a6);
178 if(am&(~255)) am= ~(am>>31);
187 src += HTAPS_MAX/2 - 1;
191 for(y=0; y < b_h; y++){
192 for(x=0; x < b_w+1; x++){
193 int a_1=src[x + (HTAPS_MAX/2-4)*stride];
194 int a0= src[x + (HTAPS_MAX/2-3)*stride];
195 int a1= src[x + (HTAPS_MAX/2-2)*stride];
196 int a2= src[x + (HTAPS_MAX/2-1)*stride];
197 int a3= src[x + (HTAPS_MAX/2+0)*stride];
198 int a4= src[x + (HTAPS_MAX/2+1)*stride];
199 int a5= src[x + (HTAPS_MAX/2+2)*stride];
200 int a6= src[x + (HTAPS_MAX/2+3)*stride];
203 am= (20*(a2+a3) - 5*(a1+a4) + (a0+a5) + 16)>>5;
205 am= (p->hcoeff[0]*(a2+a3) + p->hcoeff[1]*(a1+a4) + p->hcoeff[2]*(a0+a5) + p->hcoeff[3]*(a_1+a6) + 32)>>6;
207 if(am&(~255)) am= ~(am>>31);
215 src += stride*(HTAPS_MAX/2 - 1);
219 for(y=0; y < b_h; y++){
220 for(x=0; x < b_w; x++){
221 int a_1=tmpI[x + (HTAPS_MAX/2-4)*64];
222 int a0= tmpI[x + (HTAPS_MAX/2-3)*64];
223 int a1= tmpI[x + (HTAPS_MAX/2-2)*64];
224 int a2= tmpI[x + (HTAPS_MAX/2-1)*64];
225 int a3= tmpI[x + (HTAPS_MAX/2+0)*64];
226 int a4= tmpI[x + (HTAPS_MAX/2+1)*64];
227 int a5= tmpI[x + (HTAPS_MAX/2+2)*64];
228 int a6= tmpI[x + (HTAPS_MAX/2+3)*64];
231 am= (20*(a2+a3) - 5*(a1+a4) + (a0+a5) + 512)>>10;
233 am= (p->hcoeff[0]*(a2+a3) + p->hcoeff[1]*(a1+a4) + p->hcoeff[2]*(a0+a5) + p->hcoeff[3]*(a_1+a6) + 2048)>>12;
234 if(am&(~255)) am= ~(am>>31);
243 hpel[ 1]= tmp2t[0] + 64*(HTAPS_MAX/2-1);
248 hpel[ 6]= tmp2t[1] + 1;
250 hpel[ 8]= src + stride;
251 hpel[ 9]= hpel[1] + 64;
252 hpel[10]= hpel[8] + 1;
254 #define MC_STRIDE(x) (needs[x] ? 64 : stride)
257 int dxy = dx / 8 + dy / 8 * 4;
258 const uint8_t *src1 = hpel[dxy ];
259 const uint8_t *src2 = hpel[dxy + 1];
260 const uint8_t *src3 = hpel[dxy + 4];
261 const uint8_t *src4 = hpel[dxy + 5];
262 int stride1 = MC_STRIDE(dxy);
263 int stride2 = MC_STRIDE(dxy + 1);
264 int stride3 = MC_STRIDE(dxy + 4);
265 int stride4 = MC_STRIDE(dxy + 5);
268 for(y=0; y < b_h; y++){
269 for(x=0; x < b_w; x++){
270 dst[x]= ((8-dx)*(8-dy)*src1[x] + dx*(8-dy)*src2[x]+
271 (8-dx)* dy *src3[x] + dx* dy *src4[x]+32)>>6;
280 const uint8_t *src1= hpel[l];
281 const uint8_t *src2= hpel[r];
282 int stride1 = MC_STRIDE(l);
283 int stride2 = MC_STRIDE(r);
284 int a= weight[((dx&7) + (8*(dy&7)))];
286 for(y=0; y < b_h; y++){
287 for(x=0; x < b_w; x++){
288 dst[x]= (a*src1[x] + b*src2[x] + 4)>>3;
297 void ff_snow_pred_block(SnowContext *s, uint8_t *dst, uint8_t *tmp, int stride, int sx, int sy, int b_w, int b_h, BlockNode *block, int plane_index, int w, int h){
298 if(block->type & BLOCK_INTRA){
300 const unsigned color = block->color[plane_index];
301 const unsigned color4 = color*0x01010101;
303 for(y=0; y < b_h; y++){
304 *(uint32_t*)&dst[0 + y*stride]= color4;
305 *(uint32_t*)&dst[4 + y*stride]= color4;
306 *(uint32_t*)&dst[8 + y*stride]= color4;
307 *(uint32_t*)&dst[12+ y*stride]= color4;
308 *(uint32_t*)&dst[16+ y*stride]= color4;
309 *(uint32_t*)&dst[20+ y*stride]= color4;
310 *(uint32_t*)&dst[24+ y*stride]= color4;
311 *(uint32_t*)&dst[28+ y*stride]= color4;
314 for(y=0; y < b_h; y++){
315 *(uint32_t*)&dst[0 + y*stride]= color4;
316 *(uint32_t*)&dst[4 + y*stride]= color4;
317 *(uint32_t*)&dst[8 + y*stride]= color4;
318 *(uint32_t*)&dst[12+ y*stride]= color4;
321 for(y=0; y < b_h; y++){
322 *(uint32_t*)&dst[0 + y*stride]= color4;
323 *(uint32_t*)&dst[4 + y*stride]= color4;
326 for(y=0; y < b_h; y++){
327 *(uint32_t*)&dst[0 + y*stride]= color4;
330 for(y=0; y < b_h; y++){
331 for(x=0; x < b_w; x++){
332 dst[x + y*stride]= color;
337 uint8_t *src= s->last_picture[block->ref].data[plane_index];
338 const int scale= plane_index ? (2*s->mv_scale)>>s->chroma_h_shift : 2*s->mv_scale;
339 int mx= block->mx*scale;
340 int my= block->my*scale;
343 const int tab_index= 3 - (b_w>>2) + (b_w>>4);
344 sx += (mx>>4) - (HTAPS_MAX/2-1);
345 sy += (my>>4) - (HTAPS_MAX/2-1);
346 src += sx + sy*stride;
347 if( (unsigned)sx >= FFMAX(w - b_w - (HTAPS_MAX-2), 0)
348 || (unsigned)sy >= FFMAX(h - b_h - (HTAPS_MAX-2), 0)){
349 s->vdsp.emulated_edge_mc(tmp + MB_SIZE, src, stride, b_w+HTAPS_MAX-1, b_h+HTAPS_MAX-1, sx, sy, w, h);
353 av_assert2(s->chroma_h_shift == s->chroma_v_shift); // only one mv_scale
355 // assert(b_w == b_h || 2*b_w == b_h || b_w == 2*b_h);
356 // assert(!(b_w&(b_w-1)));
357 av_assert2(b_w>1 && b_h>1);
358 av_assert2((tab_index>=0 && tab_index<4) || b_w==32);
359 if((dx&3) || (dy&3) || !(b_w == b_h || 2*b_w == b_h || b_w == 2*b_h) || (b_w&(b_w-1)) || !s->plane[plane_index].fast_mc )
360 mc_block(&s->plane[plane_index], dst, src, stride, b_w, b_h, dx, dy);
363 for(y=0; y<b_h; y+=16){
364 s->dsp.put_h264_qpel_pixels_tab[0][dy+(dx>>2)](dst + y*stride, src + 3 + (y+3)*stride,stride);
365 s->dsp.put_h264_qpel_pixels_tab[0][dy+(dx>>2)](dst + 16 + y*stride, src + 19 + (y+3)*stride,stride);
368 s->dsp.put_h264_qpel_pixels_tab[tab_index ][dy+(dx>>2)](dst,src + 3 + 3*stride,stride);
370 s->dsp.put_h264_qpel_pixels_tab[tab_index+1][dy+(dx>>2)](dst ,src + 3 + 3*stride,stride);
371 s->dsp.put_h264_qpel_pixels_tab[tab_index+1][dy+(dx>>2)](dst+b_h,src + 3 + b_h + 3*stride,stride);
373 av_assert2(2*b_w==b_h);
374 s->dsp.put_h264_qpel_pixels_tab[tab_index ][dy+(dx>>2)](dst ,src + 3 + 3*stride ,stride);
375 s->dsp.put_h264_qpel_pixels_tab[tab_index ][dy+(dx>>2)](dst+b_w*stride,src + 3 + 3*stride+b_w*stride,stride);
380 #define mca(dx,dy,b_w)\
381 static void mc_block_hpel ## dx ## dy ## b_w(uint8_t *dst, const uint8_t *src, int stride, int h){\
383 mc_block(NULL, dst, src-(HTAPS_MAX/2-1)-(HTAPS_MAX/2-1)*stride, stride, b_w, b_w, dx, dy);\
395 av_cold int ff_snow_common_init(AVCodecContext *avctx){
396 SnowContext *s = avctx->priv_data;
401 s->max_ref_frames=1; //just make sure its not an invalid value in case of no initial keyframe
403 ff_dsputil_init(&s->dsp, avctx);
404 ff_videodsp_init(&s->vdsp, 8);
405 ff_dwt_init(&s->dwt);
408 s->dsp.put_qpel_pixels_tab [0][dy+dx/4]=\
409 s->dsp.put_no_rnd_qpel_pixels_tab[0][dy+dx/4]=\
410 s->dsp.put_h264_qpel_pixels_tab[0][dy+dx/4];\
411 s->dsp.put_qpel_pixels_tab [1][dy+dx/4]=\
412 s->dsp.put_no_rnd_qpel_pixels_tab[1][dy+dx/4]=\
413 s->dsp.put_h264_qpel_pixels_tab[1][dy+dx/4];
433 s->dsp.put_pixels_tab [0][dy/4+dx/8]=\
434 s->dsp.put_no_rnd_pixels_tab[0][dy/4+dx/8]=\
435 mc_block_hpel ## dx ## dy ## 16;\
436 s->dsp.put_pixels_tab [1][dy/4+dx/8]=\
437 s->dsp.put_no_rnd_pixels_tab[1][dy/4+dx/8]=\
438 mc_block_hpel ## dx ## dy ## 8;
447 // dec += FFMAX(s->chroma_h_shift, s->chroma_v_shift);
449 width= s->avctx->width;
450 height= s->avctx->height;
452 FF_ALLOCZ_OR_GOTO(avctx, s->spatial_idwt_buffer, width * height * sizeof(IDWTELEM), fail);
453 FF_ALLOCZ_OR_GOTO(avctx, s->spatial_dwt_buffer, width * height * sizeof(DWTELEM), fail); //FIXME this does not belong here
454 FF_ALLOCZ_OR_GOTO(avctx, s->temp_dwt_buffer, width * sizeof(DWTELEM), fail);
455 FF_ALLOCZ_OR_GOTO(avctx, s->temp_idwt_buffer, width * sizeof(IDWTELEM), fail);
456 FF_ALLOC_OR_GOTO(avctx, s->run_buffer, ((width + 1) >> 1) * ((height + 1) >> 1) * sizeof(*s->run_buffer), fail);
458 for(i=0; i<MAX_REF_FRAMES; i++)
459 for(j=0; j<MAX_REF_FRAMES; j++)
460 ff_scale_mv_ref[i][j] = 256*(i+1)/(j+1);
464 return AVERROR(ENOMEM);
467 int ff_snow_common_init_after_header(AVCodecContext *avctx) {
468 SnowContext *s = avctx->priv_data;
469 int plane_index, level, orientation;
470 int ret, emu_buf_size;
473 if ((ret = ff_get_buffer(s->avctx, &s->mconly_picture)) < 0) {
474 av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n");
477 FF_ALLOCZ_OR_GOTO(avctx, s->scratchbuf, FFMAX(s->mconly_picture.linesize[0], 2*avctx->width+256)*7*MB_SIZE, fail);
478 emu_buf_size = FFMAX(s->mconly_picture.linesize[0], 2*avctx->width+256) * (2 * MB_SIZE + HTAPS_MAX - 1);
479 FF_ALLOC_OR_GOTO(avctx, s->emu_edge_buffer, emu_buf_size, fail);
482 if(s->mconly_picture.format != avctx->pix_fmt) {
483 av_log(avctx, AV_LOG_ERROR, "pixel format changed\n");
484 return AVERROR_INVALIDDATA;
487 for(plane_index=0; plane_index<3; plane_index++){
488 int w= s->avctx->width;
489 int h= s->avctx->height;
492 w>>= s->chroma_h_shift;
493 h>>= s->chroma_v_shift;
495 s->plane[plane_index].width = w;
496 s->plane[plane_index].height= h;
498 for(level=s->spatial_decomposition_count-1; level>=0; level--){
499 for(orientation=level ? 1 : 0; orientation<4; orientation++){
500 SubBand *b= &s->plane[plane_index].band[level][orientation];
502 b->buf= s->spatial_dwt_buffer;
504 b->stride= s->plane[plane_index].width << (s->spatial_decomposition_count - level);
505 b->width = (w + !(orientation&1))>>1;
506 b->height= (h + !(orientation>1))>>1;
508 b->stride_line = 1 << (s->spatial_decomposition_count - level);
514 b->buf_x_offset = (w+1)>>1;
517 b->buf += b->stride>>1;
518 b->buf_y_offset = b->stride_line >> 1;
520 b->ibuf= s->spatial_idwt_buffer + (b->buf - s->spatial_dwt_buffer);
523 b->parent= &s->plane[plane_index].band[level-1][orientation];
524 //FIXME avoid this realloc
525 av_freep(&b->x_coeff);
526 b->x_coeff=av_mallocz(((b->width+1) * b->height+1)*sizeof(x_and_coeff));
535 return AVERROR(ENOMEM);
538 #define USE_HALFPEL_PLANE 0
540 static void halfpel_interpol(SnowContext *s, uint8_t *halfpel[4][4], AVFrame *frame){
545 int w= is_chroma ? s->avctx->width >>s->chroma_h_shift : s->avctx->width;
546 int h= is_chroma ? s->avctx->height>>s->chroma_v_shift : s->avctx->height;
547 int ls= frame->linesize[p];
548 uint8_t *src= frame->data[p];
550 halfpel[1][p] = (uint8_t*) av_malloc(ls * (h + 2 * EDGE_WIDTH)) + EDGE_WIDTH * (1 + ls);
551 halfpel[2][p] = (uint8_t*) av_malloc(ls * (h + 2 * EDGE_WIDTH)) + EDGE_WIDTH * (1 + ls);
552 halfpel[3][p] = (uint8_t*) av_malloc(ls * (h + 2 * EDGE_WIDTH)) + EDGE_WIDTH * (1 + ls);
559 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;
566 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;
574 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;
582 void ff_snow_release_buffer(AVCodecContext *avctx)
584 SnowContext *s = avctx->priv_data;
587 if(s->last_picture[s->max_ref_frames-1].data[0]){
588 avctx->release_buffer(avctx, &s->last_picture[s->max_ref_frames-1]);
590 if(s->halfpel_plane[s->max_ref_frames-1][1+i/3][i%3])
591 av_free(s->halfpel_plane[s->max_ref_frames-1][1+i/3][i%3] - EDGE_WIDTH*(1+s->current_picture.linesize[i%3]));
595 int ff_snow_frame_start(SnowContext *s){
597 int w= s->avctx->width; //FIXME round up to x16 ?
598 int h= s->avctx->height;
600 if (s->current_picture.data[0] && !(s->avctx->flags&CODEC_FLAG_EMU_EDGE)) {
601 s->dsp.draw_edges(s->current_picture.data[0],
602 s->current_picture.linesize[0], w , h ,
603 EDGE_WIDTH , EDGE_WIDTH , EDGE_TOP | EDGE_BOTTOM);
604 s->dsp.draw_edges(s->current_picture.data[1],
605 s->current_picture.linesize[1], w>>s->chroma_h_shift, h>>s->chroma_v_shift,
606 EDGE_WIDTH>>s->chroma_h_shift, EDGE_WIDTH>>s->chroma_v_shift, EDGE_TOP | EDGE_BOTTOM);
607 s->dsp.draw_edges(s->current_picture.data[2],
608 s->current_picture.linesize[2], w>>s->chroma_h_shift, h>>s->chroma_v_shift,
609 EDGE_WIDTH>>s->chroma_h_shift, EDGE_WIDTH>>s->chroma_v_shift, EDGE_TOP | EDGE_BOTTOM);
612 ff_snow_release_buffer(s->avctx);
614 tmp= s->last_picture[s->max_ref_frames-1];
615 memmove(s->last_picture+1, s->last_picture, (s->max_ref_frames-1)*sizeof(AVFrame));
616 memmove(s->halfpel_plane+1, s->halfpel_plane, (s->max_ref_frames-1)*sizeof(void*)*4*4);
617 if(USE_HALFPEL_PLANE && s->current_picture.data[0])
618 halfpel_interpol(s, s->halfpel_plane[0], &s->current_picture);
619 s->last_picture[0]= s->current_picture;
620 s->current_picture= tmp;
626 for(i=0; i<s->max_ref_frames && s->last_picture[i].data[0]; i++)
627 if(i && s->last_picture[i-1].key_frame)
630 if(s->ref_frames==0){
631 av_log(s->avctx,AV_LOG_ERROR, "No reference frames\n");
636 s->current_picture.reference= 3;
637 if(ff_get_buffer(s->avctx, &s->current_picture) < 0){
638 av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n");
642 s->current_picture.key_frame= s->keyframe;
647 av_cold void ff_snow_common_end(SnowContext *s)
649 int plane_index, level, orientation, i;
651 av_freep(&s->spatial_dwt_buffer);
652 av_freep(&s->temp_dwt_buffer);
653 av_freep(&s->spatial_idwt_buffer);
654 av_freep(&s->temp_idwt_buffer);
655 av_freep(&s->run_buffer);
658 av_freep(&s->m.me.scratchpad);
659 av_freep(&s->m.me.map);
660 av_freep(&s->m.me.score_map);
661 av_freep(&s->m.obmc_scratchpad);
664 av_freep(&s->scratchbuf);
665 av_freep(&s->emu_edge_buffer);
667 for(i=0; i<MAX_REF_FRAMES; i++){
668 av_freep(&s->ref_mvs[i]);
669 av_freep(&s->ref_scores[i]);
670 if(s->last_picture[i].data[0]) {
671 av_assert0(s->last_picture[i].data[0] != s->current_picture.data[0]);
672 s->avctx->release_buffer(s->avctx, &s->last_picture[i]);
676 for(plane_index=0; plane_index<3; plane_index++){
677 for(level=s->spatial_decomposition_count-1; level>=0; level--){
678 for(orientation=level ? 1 : 0; orientation<4; orientation++){
679 SubBand *b= &s->plane[plane_index].band[level][orientation];
681 av_freep(&b->x_coeff);
685 if (s->mconly_picture.data[0])
686 s->avctx->release_buffer(s->avctx, &s->mconly_picture);
687 if (s->current_picture.data[0])
688 s->avctx->release_buffer(s->avctx, &s->current_picture);