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"
30 #include "rangecoder.h"
35 void ff_snow_inner_add_yblock(const uint8_t *obmc, const int obmc_stride, uint8_t * * block, int b_w, int b_h,
36 int src_x, int src_y, int src_stride, slice_buffer * sb, int add, uint8_t * dst8){
40 //FIXME ugly misuse of obmc_stride
41 const uint8_t *obmc1= obmc + y*obmc_stride;
42 const uint8_t *obmc2= obmc1+ (obmc_stride>>1);
43 const uint8_t *obmc3= obmc1+ obmc_stride*(obmc_stride>>1);
44 const uint8_t *obmc4= obmc3+ (obmc_stride>>1);
45 dst = slice_buffer_get_line(sb, src_y + y);
47 int v= obmc1[x] * block[3][x + y*src_stride]
48 +obmc2[x] * block[2][x + y*src_stride]
49 +obmc3[x] * block[1][x + y*src_stride]
50 +obmc4[x] * block[0][x + y*src_stride];
52 v <<= 8 - LOG2_OBMC_MAX;
58 v = (v + (1<<(FRAC_BITS-1))) >> FRAC_BITS;
59 if(v&(~255)) v= ~(v>>31);
60 dst8[x + y*src_stride] = v;
68 void ff_snow_reset_contexts(SnowContext *s){ //FIXME better initial contexts
69 int plane_index, level, orientation;
71 for(plane_index=0; plane_index<3; plane_index++){
72 for(level=0; level<MAX_DECOMPOSITIONS; level++){
73 for(orientation=level ? 1:0; orientation<4; orientation++){
74 memset(s->plane[plane_index].band[level][orientation].state, MID_STATE, sizeof(s->plane[plane_index].band[level][orientation].state));
78 memset(s->header_state, MID_STATE, sizeof(s->header_state));
79 memset(s->block_state, MID_STATE, sizeof(s->block_state));
82 int ff_snow_alloc_blocks(SnowContext *s){
83 int w= -((-s->avctx->width )>>LOG2_MB_SIZE);
84 int h= -((-s->avctx->height)>>LOG2_MB_SIZE);
90 s->block= av_mallocz(w * h * sizeof(BlockNode) << (s->block_max_depth*2));
94 static void init_qexp(void){
98 for(i=0; i<QROOT; i++){
99 ff_qexp[i]= lrintf(v);
100 v *= pow(2, 1.0 / QROOT);
103 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){
104 static const uint8_t weight[64]={
115 static const uint8_t brane[256]={
116 0x00,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x11,0x12,0x12,0x12,0x12,0x12,0x12,0x12,
117 0x04,0x05,0xcc,0xcc,0xcc,0xcc,0xcc,0x41,0x15,0x16,0xcc,0xcc,0xcc,0xcc,0xcc,0x52,
118 0x04,0xcc,0x05,0xcc,0xcc,0xcc,0x41,0xcc,0x15,0xcc,0x16,0xcc,0xcc,0xcc,0x52,0xcc,
119 0x04,0xcc,0xcc,0x05,0xcc,0x41,0xcc,0xcc,0x15,0xcc,0xcc,0x16,0xcc,0x52,0xcc,0xcc,
120 0x04,0xcc,0xcc,0xcc,0x41,0xcc,0xcc,0xcc,0x15,0xcc,0xcc,0xcc,0x16,0xcc,0xcc,0xcc,
121 0x04,0xcc,0xcc,0x41,0xcc,0x05,0xcc,0xcc,0x15,0xcc,0xcc,0x52,0xcc,0x16,0xcc,0xcc,
122 0x04,0xcc,0x41,0xcc,0xcc,0xcc,0x05,0xcc,0x15,0xcc,0x52,0xcc,0xcc,0xcc,0x16,0xcc,
123 0x04,0x41,0xcc,0xcc,0xcc,0xcc,0xcc,0x05,0x15,0x52,0xcc,0xcc,0xcc,0xcc,0xcc,0x16,
124 0x44,0x45,0x45,0x45,0x45,0x45,0x45,0x45,0x55,0x56,0x56,0x56,0x56,0x56,0x56,0x56,
125 0x48,0x49,0xcc,0xcc,0xcc,0xcc,0xcc,0x85,0x59,0x5A,0xcc,0xcc,0xcc,0xcc,0xcc,0x96,
126 0x48,0xcc,0x49,0xcc,0xcc,0xcc,0x85,0xcc,0x59,0xcc,0x5A,0xcc,0xcc,0xcc,0x96,0xcc,
127 0x48,0xcc,0xcc,0x49,0xcc,0x85,0xcc,0xcc,0x59,0xcc,0xcc,0x5A,0xcc,0x96,0xcc,0xcc,
128 0x48,0xcc,0xcc,0xcc,0x49,0xcc,0xcc,0xcc,0x59,0xcc,0xcc,0xcc,0x96,0xcc,0xcc,0xcc,
129 0x48,0xcc,0xcc,0x85,0xcc,0x49,0xcc,0xcc,0x59,0xcc,0xcc,0x96,0xcc,0x5A,0xcc,0xcc,
130 0x48,0xcc,0x85,0xcc,0xcc,0xcc,0x49,0xcc,0x59,0xcc,0x96,0xcc,0xcc,0xcc,0x5A,0xcc,
131 0x48,0x85,0xcc,0xcc,0xcc,0xcc,0xcc,0x49,0x59,0x96,0xcc,0xcc,0xcc,0xcc,0xcc,0x5A,
134 static const uint8_t needs[16]={
142 int16_t tmpIt [64*(32+HTAPS_MAX)];
143 uint8_t tmp2t[3][64*(32+HTAPS_MAX)];
144 int16_t *tmpI= tmpIt;
145 uint8_t *tmp2= tmp2t[0];
146 const uint8_t *hpel[11];
147 av_assert2(dx<16 && dy<16);
148 r= brane[dx + 16*dy]&15;
149 l= brane[dx + 16*dy]>>4;
151 b= needs[l] | needs[r];
156 for(y=0; y < b_h+HTAPS_MAX-1; y++){
157 for(x=0; x < b_w; x++){
158 int a_1=src[x + HTAPS_MAX/2-4];
159 int a0= src[x + HTAPS_MAX/2-3];
160 int a1= src[x + HTAPS_MAX/2-2];
161 int a2= src[x + HTAPS_MAX/2-1];
162 int a3= src[x + HTAPS_MAX/2+0];
163 int a4= src[x + HTAPS_MAX/2+1];
164 int a5= src[x + HTAPS_MAX/2+2];
165 int a6= src[x + HTAPS_MAX/2+3];
167 if(!p || p->fast_mc){
168 am= 20*(a2+a3) - 5*(a1+a4) + (a0+a5);
172 am= p->hcoeff[0]*(a2+a3) + p->hcoeff[1]*(a1+a4) + p->hcoeff[2]*(a0+a5) + p->hcoeff[3]*(a_1+a6);
177 if(am&(~255)) am= ~(am>>31);
186 src += HTAPS_MAX/2 - 1;
190 for(y=0; y < b_h; y++){
191 for(x=0; x < b_w+1; x++){
192 int a_1=src[x + (HTAPS_MAX/2-4)*stride];
193 int a0= src[x + (HTAPS_MAX/2-3)*stride];
194 int a1= src[x + (HTAPS_MAX/2-2)*stride];
195 int a2= src[x + (HTAPS_MAX/2-1)*stride];
196 int a3= src[x + (HTAPS_MAX/2+0)*stride];
197 int a4= src[x + (HTAPS_MAX/2+1)*stride];
198 int a5= src[x + (HTAPS_MAX/2+2)*stride];
199 int a6= src[x + (HTAPS_MAX/2+3)*stride];
202 am= (20*(a2+a3) - 5*(a1+a4) + (a0+a5) + 16)>>5;
204 am= (p->hcoeff[0]*(a2+a3) + p->hcoeff[1]*(a1+a4) + p->hcoeff[2]*(a0+a5) + p->hcoeff[3]*(a_1+a6) + 32)>>6;
206 if(am&(~255)) am= ~(am>>31);
214 src += stride*(HTAPS_MAX/2 - 1);
218 for(y=0; y < b_h; y++){
219 for(x=0; x < b_w; x++){
220 int a_1=tmpI[x + (HTAPS_MAX/2-4)*64];
221 int a0= tmpI[x + (HTAPS_MAX/2-3)*64];
222 int a1= tmpI[x + (HTAPS_MAX/2-2)*64];
223 int a2= tmpI[x + (HTAPS_MAX/2-1)*64];
224 int a3= tmpI[x + (HTAPS_MAX/2+0)*64];
225 int a4= tmpI[x + (HTAPS_MAX/2+1)*64];
226 int a5= tmpI[x + (HTAPS_MAX/2+2)*64];
227 int a6= tmpI[x + (HTAPS_MAX/2+3)*64];
230 am= (20*(a2+a3) - 5*(a1+a4) + (a0+a5) + 512)>>10;
232 am= (p->hcoeff[0]*(a2+a3) + p->hcoeff[1]*(a1+a4) + p->hcoeff[2]*(a0+a5) + p->hcoeff[3]*(a_1+a6) + 2048)>>12;
233 if(am&(~255)) am= ~(am>>31);
242 hpel[ 1]= tmp2t[0] + 64*(HTAPS_MAX/2-1);
247 hpel[ 6]= tmp2t[1] + 1;
249 hpel[ 8]= src + stride;
250 hpel[ 9]= hpel[1] + 64;
251 hpel[10]= hpel[8] + 1;
253 #define MC_STRIDE(x) (needs[x] ? 64 : stride)
256 int dxy = dx / 8 + dy / 8 * 4;
257 const uint8_t *src1 = hpel[dxy ];
258 const uint8_t *src2 = hpel[dxy + 1];
259 const uint8_t *src3 = hpel[dxy + 4];
260 const uint8_t *src4 = hpel[dxy + 5];
261 int stride1 = MC_STRIDE(dxy);
262 int stride2 = MC_STRIDE(dxy + 1);
263 int stride3 = MC_STRIDE(dxy + 4);
264 int stride4 = MC_STRIDE(dxy + 5);
267 for(y=0; y < b_h; y++){
268 for(x=0; x < b_w; x++){
269 dst[x]= ((8-dx)*(8-dy)*src1[x] + dx*(8-dy)*src2[x]+
270 (8-dx)* dy *src3[x] + dx* dy *src4[x]+32)>>6;
279 const uint8_t *src1= hpel[l];
280 const uint8_t *src2= hpel[r];
281 int stride1 = MC_STRIDE(l);
282 int stride2 = MC_STRIDE(r);
283 int a= weight[((dx&7) + (8*(dy&7)))];
285 for(y=0; y < b_h; y++){
286 for(x=0; x < b_w; x++){
287 dst[x]= (a*src1[x] + b*src2[x] + 4)>>3;
296 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){
297 if(block->type & BLOCK_INTRA){
299 const unsigned color = block->color[plane_index];
300 const unsigned color4 = color*0x01010101;
302 for(y=0; y < b_h; y++){
303 *(uint32_t*)&dst[0 + y*stride]= color4;
304 *(uint32_t*)&dst[4 + y*stride]= color4;
305 *(uint32_t*)&dst[8 + y*stride]= color4;
306 *(uint32_t*)&dst[12+ y*stride]= color4;
307 *(uint32_t*)&dst[16+ y*stride]= color4;
308 *(uint32_t*)&dst[20+ y*stride]= color4;
309 *(uint32_t*)&dst[24+ y*stride]= color4;
310 *(uint32_t*)&dst[28+ y*stride]= color4;
313 for(y=0; y < b_h; y++){
314 *(uint32_t*)&dst[0 + y*stride]= color4;
315 *(uint32_t*)&dst[4 + y*stride]= color4;
316 *(uint32_t*)&dst[8 + y*stride]= color4;
317 *(uint32_t*)&dst[12+ y*stride]= color4;
320 for(y=0; y < b_h; y++){
321 *(uint32_t*)&dst[0 + y*stride]= color4;
322 *(uint32_t*)&dst[4 + y*stride]= color4;
325 for(y=0; y < b_h; y++){
326 *(uint32_t*)&dst[0 + y*stride]= color4;
329 for(y=0; y < b_h; y++){
330 for(x=0; x < b_w; x++){
331 dst[x + y*stride]= color;
336 uint8_t *src= s->last_picture[block->ref].data[plane_index];
337 const int scale= plane_index ? (2*s->mv_scale)>>s->chroma_h_shift : 2*s->mv_scale;
338 int mx= block->mx*scale;
339 int my= block->my*scale;
342 const int tab_index= 3 - (b_w>>2) + (b_w>>4);
343 sx += (mx>>4) - (HTAPS_MAX/2-1);
344 sy += (my>>4) - (HTAPS_MAX/2-1);
345 src += sx + sy*stride;
346 if( (unsigned)sx >= w - b_w - (HTAPS_MAX-2)
347 || (unsigned)sy >= h - b_h - (HTAPS_MAX-2)){
348 s->dsp.emulated_edge_mc(tmp + MB_SIZE, src, stride, b_w+HTAPS_MAX-1, b_h+HTAPS_MAX-1, sx, sy, w, h);
352 av_assert2(s->chroma_h_shift == s->chroma_v_shift); // only one mv_scale
354 // assert(b_w == b_h || 2*b_w == b_h || b_w == 2*b_h);
355 // assert(!(b_w&(b_w-1)));
356 av_assert2(b_w>1 && b_h>1);
357 av_assert2((tab_index>=0 && tab_index<4) || b_w==32);
358 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 )
359 mc_block(&s->plane[plane_index], dst, src, stride, b_w, b_h, dx, dy);
362 for(y=0; y<b_h; y+=16){
363 s->dsp.put_h264_qpel_pixels_tab[0][dy+(dx>>2)](dst + y*stride, src + 3 + (y+3)*stride,stride);
364 s->dsp.put_h264_qpel_pixels_tab[0][dy+(dx>>2)](dst + 16 + y*stride, src + 19 + (y+3)*stride,stride);
367 s->dsp.put_h264_qpel_pixels_tab[tab_index ][dy+(dx>>2)](dst,src + 3 + 3*stride,stride);
369 s->dsp.put_h264_qpel_pixels_tab[tab_index+1][dy+(dx>>2)](dst ,src + 3 + 3*stride,stride);
370 s->dsp.put_h264_qpel_pixels_tab[tab_index+1][dy+(dx>>2)](dst+b_h,src + 3 + b_h + 3*stride,stride);
372 av_assert2(2*b_w==b_h);
373 s->dsp.put_h264_qpel_pixels_tab[tab_index ][dy+(dx>>2)](dst ,src + 3 + 3*stride ,stride);
374 s->dsp.put_h264_qpel_pixels_tab[tab_index ][dy+(dx>>2)](dst+b_w*stride,src + 3 + 3*stride+b_w*stride,stride);
379 #define mca(dx,dy,b_w)\
380 static void mc_block_hpel ## dx ## dy ## b_w(uint8_t *dst, const uint8_t *src, int stride, int h){\
382 mc_block(NULL, dst, src-(HTAPS_MAX/2-1)-(HTAPS_MAX/2-1)*stride, stride, b_w, b_w, dx, dy);\
394 av_cold int ff_snow_common_init(AVCodecContext *avctx){
395 SnowContext *s = avctx->priv_data;
400 s->max_ref_frames=1; //just make sure its not an invalid value in case of no initial keyframe
402 ff_dsputil_init(&s->dsp, avctx);
403 ff_dwt_init(&s->dwt);
406 s->dsp.put_qpel_pixels_tab [0][dy+dx/4]=\
407 s->dsp.put_no_rnd_qpel_pixels_tab[0][dy+dx/4]=\
408 s->dsp.put_h264_qpel_pixels_tab[0][dy+dx/4];\
409 s->dsp.put_qpel_pixels_tab [1][dy+dx/4]=\
410 s->dsp.put_no_rnd_qpel_pixels_tab[1][dy+dx/4]=\
411 s->dsp.put_h264_qpel_pixels_tab[1][dy+dx/4];
431 s->dsp.put_pixels_tab [0][dy/4+dx/8]=\
432 s->dsp.put_no_rnd_pixels_tab[0][dy/4+dx/8]=\
433 mc_block_hpel ## dx ## dy ## 16;\
434 s->dsp.put_pixels_tab [1][dy/4+dx/8]=\
435 s->dsp.put_no_rnd_pixels_tab[1][dy/4+dx/8]=\
436 mc_block_hpel ## dx ## dy ## 8;
445 // dec += FFMAX(s->chroma_h_shift, s->chroma_v_shift);
447 width= s->avctx->width;
448 height= s->avctx->height;
450 FF_ALLOCZ_OR_GOTO(avctx, s->spatial_idwt_buffer, width * height * sizeof(IDWTELEM), fail);
451 FF_ALLOCZ_OR_GOTO(avctx, s->spatial_dwt_buffer, width * height * sizeof(DWTELEM), fail); //FIXME this does not belong here
452 FF_ALLOCZ_OR_GOTO(avctx, s->temp_dwt_buffer, width * sizeof(DWTELEM), fail);
453 FF_ALLOCZ_OR_GOTO(avctx, s->temp_idwt_buffer, width * sizeof(IDWTELEM), fail);
454 FF_ALLOC_OR_GOTO(avctx, s->run_buffer, ((width + 1) >> 1) * ((height + 1) >> 1) * sizeof(*s->run_buffer), fail);
456 for(i=0; i<MAX_REF_FRAMES; i++)
457 for(j=0; j<MAX_REF_FRAMES; j++)
458 ff_scale_mv_ref[i][j] = 256*(i+1)/(j+1);
462 return AVERROR(ENOMEM);
465 int ff_snow_common_init_after_header(AVCodecContext *avctx) {
466 SnowContext *s = avctx->priv_data;
467 int plane_index, level, orientation;
468 int ret, emu_buf_size;
471 if ((ret = s->avctx->get_buffer(s->avctx, &s->mconly_picture)) < 0) {
472 av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n");
475 FF_ALLOCZ_OR_GOTO(avctx, s->scratchbuf, FFMAX(s->mconly_picture.linesize[0], 2*avctx->width+256)*7*MB_SIZE, fail);
476 emu_buf_size = FFMAX(s->mconly_picture.linesize[0], 2*avctx->width+256) * (2 * MB_SIZE + HTAPS_MAX - 1);
477 FF_ALLOC_OR_GOTO(avctx, s->emu_edge_buffer, emu_buf_size, fail);
480 if(s->mconly_picture.format != avctx->pix_fmt) {
481 av_log(avctx, AV_LOG_ERROR, "pixel format changed\n");
482 return AVERROR_INVALIDDATA;
485 for(plane_index=0; plane_index<3; plane_index++){
486 int w= s->avctx->width;
487 int h= s->avctx->height;
490 w>>= s->chroma_h_shift;
491 h>>= s->chroma_v_shift;
493 s->plane[plane_index].width = w;
494 s->plane[plane_index].height= h;
496 for(level=s->spatial_decomposition_count-1; level>=0; level--){
497 for(orientation=level ? 1 : 0; orientation<4; orientation++){
498 SubBand *b= &s->plane[plane_index].band[level][orientation];
500 b->buf= s->spatial_dwt_buffer;
502 b->stride= s->plane[plane_index].width << (s->spatial_decomposition_count - level);
503 b->width = (w + !(orientation&1))>>1;
504 b->height= (h + !(orientation>1))>>1;
506 b->stride_line = 1 << (s->spatial_decomposition_count - level);
512 b->buf_x_offset = (w+1)>>1;
515 b->buf += b->stride>>1;
516 b->buf_y_offset = b->stride_line >> 1;
518 b->ibuf= s->spatial_idwt_buffer + (b->buf - s->spatial_dwt_buffer);
521 b->parent= &s->plane[plane_index].band[level-1][orientation];
522 //FIXME avoid this realloc
523 av_freep(&b->x_coeff);
524 b->x_coeff=av_mallocz(((b->width+1) * b->height+1)*sizeof(x_and_coeff));
533 return AVERROR(ENOMEM);
536 #define USE_HALFPEL_PLANE 0
538 static void halfpel_interpol(SnowContext *s, uint8_t *halfpel[4][4], AVFrame *frame){
543 int w= is_chroma ? s->avctx->width >>s->chroma_h_shift : s->avctx->width;
544 int h= is_chroma ? s->avctx->height>>s->chroma_v_shift : s->avctx->height;
545 int ls= frame->linesize[p];
546 uint8_t *src= frame->data[p];
548 halfpel[1][p] = (uint8_t*) av_malloc(ls * (h + 2 * EDGE_WIDTH)) + EDGE_WIDTH * (1 + ls);
549 halfpel[2][p] = (uint8_t*) av_malloc(ls * (h + 2 * EDGE_WIDTH)) + EDGE_WIDTH * (1 + ls);
550 halfpel[3][p] = (uint8_t*) av_malloc(ls * (h + 2 * EDGE_WIDTH)) + EDGE_WIDTH * (1 + ls);
557 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;
564 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;
572 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;
580 void ff_snow_release_buffer(AVCodecContext *avctx)
582 SnowContext *s = avctx->priv_data;
585 if(s->last_picture[s->max_ref_frames-1].data[0]){
586 avctx->release_buffer(avctx, &s->last_picture[s->max_ref_frames-1]);
588 if(s->halfpel_plane[s->max_ref_frames-1][1+i/3][i%3])
589 av_free(s->halfpel_plane[s->max_ref_frames-1][1+i/3][i%3] - EDGE_WIDTH*(1+s->current_picture.linesize[i%3]));
593 int ff_snow_frame_start(SnowContext *s){
595 int w= s->avctx->width; //FIXME round up to x16 ?
596 int h= s->avctx->height;
598 if (s->current_picture.data[0] && !(s->avctx->flags&CODEC_FLAG_EMU_EDGE)) {
599 s->dsp.draw_edges(s->current_picture.data[0],
600 s->current_picture.linesize[0], w , h ,
601 EDGE_WIDTH , EDGE_WIDTH , EDGE_TOP | EDGE_BOTTOM);
602 s->dsp.draw_edges(s->current_picture.data[1],
603 s->current_picture.linesize[1], w>>s->chroma_h_shift, h>>s->chroma_v_shift,
604 EDGE_WIDTH>>s->chroma_h_shift, EDGE_WIDTH>>s->chroma_v_shift, EDGE_TOP | EDGE_BOTTOM);
605 s->dsp.draw_edges(s->current_picture.data[2],
606 s->current_picture.linesize[2], w>>s->chroma_h_shift, h>>s->chroma_v_shift,
607 EDGE_WIDTH>>s->chroma_h_shift, EDGE_WIDTH>>s->chroma_v_shift, EDGE_TOP | EDGE_BOTTOM);
610 ff_snow_release_buffer(s->avctx);
612 tmp= s->last_picture[s->max_ref_frames-1];
613 memmove(s->last_picture+1, s->last_picture, (s->max_ref_frames-1)*sizeof(AVFrame));
614 memmove(s->halfpel_plane+1, s->halfpel_plane, (s->max_ref_frames-1)*sizeof(void*)*4*4);
615 if(USE_HALFPEL_PLANE && s->current_picture.data[0])
616 halfpel_interpol(s, s->halfpel_plane[0], &s->current_picture);
617 s->last_picture[0]= s->current_picture;
618 s->current_picture= tmp;
624 for(i=0; i<s->max_ref_frames && s->last_picture[i].data[0]; i++)
625 if(i && s->last_picture[i-1].key_frame)
628 if(s->ref_frames==0){
629 av_log(s->avctx,AV_LOG_ERROR, "No reference frames\n");
634 s->current_picture.reference= 3;
635 if(s->avctx->get_buffer(s->avctx, &s->current_picture) < 0){
636 av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n");
640 s->current_picture.key_frame= s->keyframe;
645 av_cold void ff_snow_common_end(SnowContext *s)
647 int plane_index, level, orientation, i;
649 av_freep(&s->spatial_dwt_buffer);
650 av_freep(&s->temp_dwt_buffer);
651 av_freep(&s->spatial_idwt_buffer);
652 av_freep(&s->temp_idwt_buffer);
653 av_freep(&s->run_buffer);
656 av_freep(&s->m.me.scratchpad);
657 av_freep(&s->m.me.map);
658 av_freep(&s->m.me.score_map);
659 av_freep(&s->m.obmc_scratchpad);
662 av_freep(&s->scratchbuf);
663 av_freep(&s->emu_edge_buffer);
665 for(i=0; i<MAX_REF_FRAMES; i++){
666 av_freep(&s->ref_mvs[i]);
667 av_freep(&s->ref_scores[i]);
668 if(s->last_picture[i].data[0]) {
669 av_assert0(s->last_picture[i].data[0] != s->current_picture.data[0]);
670 s->avctx->release_buffer(s->avctx, &s->last_picture[i]);
674 for(plane_index=0; plane_index<3; plane_index++){
675 for(level=s->spatial_decomposition_count-1; level>=0; level--){
676 for(orientation=level ? 1 : 0; orientation<4; orientation++){
677 SubBand *b= &s->plane[plane_index].band[level][orientation];
679 av_freep(&b->x_coeff);
683 if (s->mconly_picture.data[0])
684 s->avctx->release_buffer(s->avctx, &s->mconly_picture);
685 if (s->current_picture.data[0])
686 s->avctx->release_buffer(s->avctx, &s->current_picture);