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-rw-r--r--libavcodec/snowenc.c2036
1 files changed, 2036 insertions, 0 deletions
diff --git a/libavcodec/snowenc.c b/libavcodec/snowenc.c
new file mode 100644
index 0000000..ea5e544
--- /dev/null
+++ b/libavcodec/snowenc.c
@@ -0,0 +1,2036 @@
+/*
+ * Copyright (C) 2004 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * 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
+ */
+
+#include "libavutil/intmath.h"
+#include "libavutil/log.h"
+#include "libavutil/opt.h"
+#include "avcodec.h"
+#include "internal.h"
+#include "snow_dwt.h"
+#include "snow.h"
+
+#include "rangecoder.h"
+#include "mathops.h"
+
+#include "mpegvideo.h"
+#include "h263.h"
+
+static av_cold int encode_init(AVCodecContext *avctx)
+{
+ SnowContext *s = avctx->priv_data;
+ int plane_index, ret;
+ int i;
+
+ if(avctx->prediction_method == DWT_97
+ && (avctx->flags & CODEC_FLAG_QSCALE)
+ && avctx->global_quality == 0){
+ av_log(avctx, AV_LOG_ERROR, "The 9/7 wavelet is incompatible with lossless mode.\n");
+ return -1;
+ }
+
+ s->spatial_decomposition_type= avctx->prediction_method; //FIXME add decorrelator type r transform_type
+
+ s->mv_scale = (avctx->flags & CODEC_FLAG_QPEL) ? 2 : 4;
+ s->block_max_depth= (avctx->flags & CODEC_FLAG_4MV ) ? 1 : 0;
+
+ for(plane_index=0; plane_index<3; plane_index++){
+ s->plane[plane_index].diag_mc= 1;
+ s->plane[plane_index].htaps= 6;
+ s->plane[plane_index].hcoeff[0]= 40;
+ s->plane[plane_index].hcoeff[1]= -10;
+ s->plane[plane_index].hcoeff[2]= 2;
+ s->plane[plane_index].fast_mc= 1;
+ }
+
+ if ((ret = ff_snow_common_init(avctx)) < 0) {
+ return ret;
+ }
+ ff_mpegvideoencdsp_init(&s->mpvencdsp, avctx);
+
+ ff_snow_alloc_blocks(s);
+
+ s->version=0;
+
+ s->m.avctx = avctx;
+ s->m.flags = avctx->flags;
+ s->m.bit_rate= avctx->bit_rate;
+
+ s->m.me.temp =
+ s->m.me.scratchpad= av_mallocz_array((avctx->width+64), 2*16*2*sizeof(uint8_t));
+ s->m.me.map = av_mallocz(ME_MAP_SIZE*sizeof(uint32_t));
+ s->m.me.score_map = av_mallocz(ME_MAP_SIZE*sizeof(uint32_t));
+ s->m.obmc_scratchpad= av_mallocz(MB_SIZE*MB_SIZE*12*sizeof(uint32_t));
+ if (!s->m.me.scratchpad || !s->m.me.map || !s->m.me.score_map || !s->m.obmc_scratchpad)
+ return AVERROR(ENOMEM);
+
+ ff_h263_encode_init(&s->m); //mv_penalty
+
+ s->max_ref_frames = FFMAX(FFMIN(avctx->refs, MAX_REF_FRAMES), 1);
+
+ if(avctx->flags&CODEC_FLAG_PASS1){
+ if(!avctx->stats_out)
+ avctx->stats_out = av_mallocz(256);
+
+ if (!avctx->stats_out)
+ return AVERROR(ENOMEM);
+ }
+ if((avctx->flags&CODEC_FLAG_PASS2) || !(avctx->flags&CODEC_FLAG_QSCALE)){
+ if(ff_rate_control_init(&s->m) < 0)
+ return -1;
+ }
+ s->pass1_rc= !(avctx->flags & (CODEC_FLAG_QSCALE|CODEC_FLAG_PASS2));
+
+ switch(avctx->pix_fmt){
+ case AV_PIX_FMT_YUV444P:
+// case AV_PIX_FMT_YUV422P:
+ case AV_PIX_FMT_YUV420P:
+// case AV_PIX_FMT_YUV411P:
+ case AV_PIX_FMT_YUV410P:
+ s->nb_planes = 3;
+ s->colorspace_type= 0;
+ break;
+ case AV_PIX_FMT_GRAY8:
+ s->nb_planes = 1;
+ s->colorspace_type = 1;
+ break;
+/* case AV_PIX_FMT_RGB32:
+ s->colorspace= 1;
+ break;*/
+ default:
+ av_log(avctx, AV_LOG_ERROR, "pixel format not supported\n");
+ return -1;
+ }
+ avcodec_get_chroma_sub_sample(avctx->pix_fmt, &s->chroma_h_shift, &s->chroma_v_shift);
+
+ ff_set_cmp(&s->mecc, s->mecc.me_cmp, s->avctx->me_cmp);
+ ff_set_cmp(&s->mecc, s->mecc.me_sub_cmp, s->avctx->me_sub_cmp);
+
+ s->input_picture = av_frame_alloc();
+ avctx->coded_frame = av_frame_alloc();
+ if (!s->input_picture || !avctx->coded_frame)
+ return AVERROR(ENOMEM);
+
+ if ((ret = ff_snow_get_buffer(s, s->input_picture)) < 0)
+ return ret;
+
+ if(s->avctx->me_method == ME_ITER){
+ int size= s->b_width * s->b_height << 2*s->block_max_depth;
+ for(i=0; i<s->max_ref_frames; i++){
+ s->ref_mvs[i]= av_mallocz_array(size, sizeof(int16_t[2]));
+ s->ref_scores[i]= av_mallocz_array(size, sizeof(uint32_t));
+ if (!s->ref_mvs[i] || !s->ref_scores[i])
+ return AVERROR(ENOMEM);
+ }
+ }
+
+ return 0;
+}
+
+//near copy & paste from dsputil, FIXME
+static int pix_sum(uint8_t * pix, int line_size, int w, int h)
+{
+ int s, i, j;
+
+ s = 0;
+ for (i = 0; i < h; i++) {
+ for (j = 0; j < w; j++) {
+ s += pix[0];
+ pix ++;
+ }
+ pix += line_size - w;
+ }
+ return s;
+}
+
+//near copy & paste from dsputil, FIXME
+static int pix_norm1(uint8_t * pix, int line_size, int w)
+{
+ int s, i, j;
+ uint32_t *sq = ff_square_tab + 256;
+
+ s = 0;
+ for (i = 0; i < w; i++) {
+ for (j = 0; j < w; j ++) {
+ s += sq[pix[0]];
+ pix ++;
+ }
+ pix += line_size - w;
+ }
+ return s;
+}
+
+static inline int get_penalty_factor(int lambda, int lambda2, int type){
+ switch(type&0xFF){
+ default:
+ case FF_CMP_SAD:
+ return lambda>>FF_LAMBDA_SHIFT;
+ case FF_CMP_DCT:
+ return (3*lambda)>>(FF_LAMBDA_SHIFT+1);
+ case FF_CMP_W53:
+ return (4*lambda)>>(FF_LAMBDA_SHIFT);
+ case FF_CMP_W97:
+ return (2*lambda)>>(FF_LAMBDA_SHIFT);
+ case FF_CMP_SATD:
+ case FF_CMP_DCT264:
+ return (2*lambda)>>FF_LAMBDA_SHIFT;
+ case FF_CMP_RD:
+ case FF_CMP_PSNR:
+ case FF_CMP_SSE:
+ case FF_CMP_NSSE:
+ return lambda2>>FF_LAMBDA_SHIFT;
+ case FF_CMP_BIT:
+ return 1;
+ }
+}
+
+//FIXME copy&paste
+#define P_LEFT P[1]
+#define P_TOP P[2]
+#define P_TOPRIGHT P[3]
+#define P_MEDIAN P[4]
+#define P_MV1 P[9]
+#define FLAG_QPEL 1 //must be 1
+
+static int encode_q_branch(SnowContext *s, int level, int x, int y){
+ uint8_t p_buffer[1024];
+ uint8_t i_buffer[1024];
+ uint8_t p_state[sizeof(s->block_state)];
+ uint8_t i_state[sizeof(s->block_state)];
+ RangeCoder pc, ic;
+ uint8_t *pbbak= s->c.bytestream;
+ uint8_t *pbbak_start= s->c.bytestream_start;
+ int score, score2, iscore, i_len, p_len, block_s, sum, base_bits;
+ const int w= s->b_width << s->block_max_depth;
+ const int h= s->b_height << s->block_max_depth;
+ const int rem_depth= s->block_max_depth - level;
+ const int index= (x + y*w) << rem_depth;
+ const int block_w= 1<<(LOG2_MB_SIZE - level);
+ int trx= (x+1)<<rem_depth;
+ int try= (y+1)<<rem_depth;
+ const BlockNode *left = x ? &s->block[index-1] : &null_block;
+ const BlockNode *top = y ? &s->block[index-w] : &null_block;
+ const BlockNode *right = trx<w ? &s->block[index+1] : &null_block;
+ const BlockNode *bottom= try<h ? &s->block[index+w] : &null_block;
+ const BlockNode *tl = y && x ? &s->block[index-w-1] : left;
+ const BlockNode *tr = y && trx<w && ((x&1)==0 || level==0) ? &s->block[index-w+(1<<rem_depth)] : tl; //FIXME use lt
+ int pl = left->color[0];
+ int pcb= left->color[1];
+ int pcr= left->color[2];
+ int pmx, pmy;
+ int mx=0, my=0;
+ int l,cr,cb;
+ 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*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
+ const int shift= 1+qpel;
+ MotionEstContext *c= &s->m.me;
+ int ref_context= av_log2(2*left->ref) + av_log2(2*top->ref);
+ int mx_context= av_log2(2*FFABS(left->mx - top->mx));
+ int my_context= av_log2(2*FFABS(left->my - top->my));
+ int s_context= 2*left->level + 2*top->level + tl->level + tr->level;
+ int ref, best_ref, ref_score, ref_mx, ref_my;
+
+ av_assert0(sizeof(s->block_state) >= 256);
+ if(s->keyframe){
+ set_blocks(s, level, x, y, pl, pcb, pcr, 0, 0, 0, BLOCK_INTRA);
+ return 0;
+ }
+
+// clip predictors / edge ?
+
+ P_LEFT[0]= left->mx;
+ P_LEFT[1]= left->my;
+ P_TOP [0]= top->mx;
+ P_TOP [1]= top->my;
+ P_TOPRIGHT[0]= tr->mx;
+ P_TOPRIGHT[1]= tr->my;
+
+ last_mv[0][0]= s->block[index].mx;
+ last_mv[0][1]= s->block[index].my;
+ last_mv[1][0]= right->mx;
+ last_mv[1][1]= right->my;
+ last_mv[2][0]= bottom->mx;
+ last_mv[2][1]= bottom->my;
+
+ s->m.mb_stride=2;
+ s->m.mb_x=
+ s->m.mb_y= 0;
+ c->skip= 0;
+
+ av_assert1(c-> stride == stride);
+ av_assert1(c->uvstride == uvstride);
+
+ c->penalty_factor = get_penalty_factor(s->lambda, s->lambda2, c->avctx->me_cmp);
+ c->sub_penalty_factor= get_penalty_factor(s->lambda, s->lambda2, c->avctx->me_sub_cmp);
+ c->mb_penalty_factor = get_penalty_factor(s->lambda, s->lambda2, c->avctx->mb_cmp);
+ c->current_mv_penalty= c->mv_penalty[s->m.f_code=1] + MAX_MV;
+
+ c->xmin = - x*block_w - 16+3;
+ c->ymin = - y*block_w - 16+3;
+ c->xmax = - (x+1)*block_w + (w<<(LOG2_MB_SIZE - s->block_max_depth)) + 16-3;
+ c->ymax = - (y+1)*block_w + (h<<(LOG2_MB_SIZE - s->block_max_depth)) + 16-3;
+
+ if(P_LEFT[0] > (c->xmax<<shift)) P_LEFT[0] = (c->xmax<<shift);
+ if(P_LEFT[1] > (c->ymax<<shift)) P_LEFT[1] = (c->ymax<<shift);
+ if(P_TOP[0] > (c->xmax<<shift)) P_TOP[0] = (c->xmax<<shift);
+ if(P_TOP[1] > (c->ymax<<shift)) P_TOP[1] = (c->ymax<<shift);
+ if(P_TOPRIGHT[0] < (c->xmin<<shift)) P_TOPRIGHT[0]= (c->xmin<<shift);
+ if(P_TOPRIGHT[0] > (c->xmax<<shift)) P_TOPRIGHT[0]= (c->xmax<<shift); //due to pmx no clip
+ if(P_TOPRIGHT[1] > (c->ymax<<shift)) P_TOPRIGHT[1]= (c->ymax<<shift);
+
+ P_MEDIAN[0]= mid_pred(P_LEFT[0], P_TOP[0], P_TOPRIGHT[0]);
+ P_MEDIAN[1]= mid_pred(P_LEFT[1], P_TOP[1], P_TOPRIGHT[1]);
+
+ if (!y) {
+ c->pred_x= P_LEFT[0];
+ c->pred_y= P_LEFT[1];
+ } else {
+ c->pred_x = P_MEDIAN[0];
+ c->pred_y = P_MEDIAN[1];
+ }
+
+ score= INT_MAX;
+ best_ref= 0;
+ for(ref=0; ref<s->ref_frames; ref++){
+ init_ref(c, current_data, s->last_picture[ref]->data, NULL, block_w*x, block_w*y, 0);
+
+ ref_score= ff_epzs_motion_search(&s->m, &ref_mx, &ref_my, P, 0, /*ref_index*/ 0, last_mv,
+ (1<<16)>>shift, level-LOG2_MB_SIZE+4, block_w);
+
+ av_assert2(ref_mx >= c->xmin);
+ av_assert2(ref_mx <= c->xmax);
+ av_assert2(ref_my >= c->ymin);
+ av_assert2(ref_my <= c->ymax);
+
+ ref_score= c->sub_motion_search(&s->m, &ref_mx, &ref_my, ref_score, 0, 0, level-LOG2_MB_SIZE+4, block_w);
+ ref_score= ff_get_mb_score(&s->m, ref_mx, ref_my, 0, 0, level-LOG2_MB_SIZE+4, block_w, 0);
+ ref_score+= 2*av_log2(2*ref)*c->penalty_factor;
+ if(s->ref_mvs[ref]){
+ s->ref_mvs[ref][index][0]= ref_mx;
+ s->ref_mvs[ref][index][1]= ref_my;
+ s->ref_scores[ref][index]= ref_score;
+ }
+ if(score > ref_score){
+ score= ref_score;
+ best_ref= ref;
+ mx= ref_mx;
+ my= ref_my;
+ }
+ }
+ //FIXME if mb_cmp != SSE then intra cannot be compared currently and mb_penalty vs. lambda2
+
+ // subpel search
+ base_bits= get_rac_count(&s->c) - 8*(s->c.bytestream - s->c.bytestream_start);
+ pc= s->c;
+ pc.bytestream_start=
+ pc.bytestream= p_buffer; //FIXME end/start? and at the other stoo
+ memcpy(p_state, s->block_state, sizeof(s->block_state));
+
+ if(level!=s->block_max_depth)
+ put_rac(&pc, &p_state[4 + s_context], 1);
+ put_rac(&pc, &p_state[1 + left->type + top->type], 0);
+ if(s->ref_frames > 1)
+ put_symbol(&pc, &p_state[128 + 1024 + 32*ref_context], best_ref, 0);
+ pred_mv(s, &pmx, &pmy, best_ref, left, top, tr);
+ put_symbol(&pc, &p_state[128 + 32*(mx_context + 16*!!best_ref)], mx - pmx, 1);
+ put_symbol(&pc, &p_state[128 + 32*(my_context + 16*!!best_ref)], my - pmy, 1);
+ p_len= pc.bytestream - pc.bytestream_start;
+ score += (s->lambda2*(get_rac_count(&pc)-base_bits))>>FF_LAMBDA_SHIFT;
+
+ block_s= block_w*block_w;
+ sum = pix_sum(current_data[0], stride, block_w, block_w);
+ l= (sum + block_s/2)/block_s;
+ iscore = pix_norm1(current_data[0], stride, block_w) - 2*l*sum + l*l*block_s;
+
+ if (s->nb_planes > 2) {
+ block_s= block_w*block_w>>(s->chroma_h_shift + s->chroma_v_shift);
+ sum = pix_sum(current_data[1], uvstride, block_w>>s->chroma_h_shift, block_w>>s->chroma_v_shift);
+ cb= (sum + block_s/2)/block_s;
+ // iscore += pix_norm1(&current_mb[1][0], uvstride, block_w>>1) - 2*cb*sum + cb*cb*block_s;
+ sum = pix_sum(current_data[2], uvstride, block_w>>s->chroma_h_shift, block_w>>s->chroma_v_shift);
+ cr= (sum + block_s/2)/block_s;
+ // iscore += pix_norm1(&current_mb[2][0], uvstride, block_w>>1) - 2*cr*sum + cr*cr*block_s;
+ }else
+ cb = cr = 0;
+
+ ic= s->c;
+ ic.bytestream_start=
+ ic.bytestream= i_buffer; //FIXME end/start? and at the other stoo
+ memcpy(i_state, s->block_state, sizeof(s->block_state));
+ if(level!=s->block_max_depth)
+ put_rac(&ic, &i_state[4 + s_context], 1);
+ put_rac(&ic, &i_state[1 + left->type + top->type], 1);
+ put_symbol(&ic, &i_state[32], l-pl , 1);
+ if (s->nb_planes > 2) {
+ put_symbol(&ic, &i_state[64], cb-pcb, 1);
+ put_symbol(&ic, &i_state[96], cr-pcr, 1);
+ }
+ i_len= ic.bytestream - ic.bytestream_start;
+ iscore += (s->lambda2*(get_rac_count(&ic)-base_bits))>>FF_LAMBDA_SHIFT;
+
+ av_assert1(iscore < 255*255*256 + s->lambda2*10);
+ av_assert1(iscore >= 0);
+ av_assert1(l>=0 && l<=255);
+ av_assert1(pl>=0 && pl<=255);
+
+ if(level==0){
+ int varc= iscore >> 8;
+ int vard= score >> 8;
+ if (vard <= 64 || vard < varc)
+ c->scene_change_score+= ff_sqrt(vard) - ff_sqrt(varc);
+ else
+ c->scene_change_score+= s->m.qscale;
+ }
+
+ if(level!=s->block_max_depth){
+ put_rac(&s->c, &s->block_state[4 + s_context], 0);
+ score2 = encode_q_branch(s, level+1, 2*x+0, 2*y+0);
+ score2+= encode_q_branch(s, level+1, 2*x+1, 2*y+0);
+ score2+= encode_q_branch(s, level+1, 2*x+0, 2*y+1);
+ score2+= encode_q_branch(s, level+1, 2*x+1, 2*y+1);
+ score2+= s->lambda2>>FF_LAMBDA_SHIFT; //FIXME exact split overhead
+
+ if(score2 < score && score2 < iscore)
+ return score2;
+ }
+
+ if(iscore < score){
+ pred_mv(s, &pmx, &pmy, 0, left, top, tr);
+ memcpy(pbbak, i_buffer, i_len);
+ s->c= ic;
+ s->c.bytestream_start= pbbak_start;
+ s->c.bytestream= pbbak + i_len;
+ set_blocks(s, level, x, y, l, cb, cr, pmx, pmy, 0, BLOCK_INTRA);
+ memcpy(s->block_state, i_state, sizeof(s->block_state));
+ return iscore;
+ }else{
+ memcpy(pbbak, p_buffer, p_len);
+ s->c= pc;
+ s->c.bytestream_start= pbbak_start;
+ s->c.bytestream= pbbak + p_len;
+ set_blocks(s, level, x, y, pl, pcb, pcr, mx, my, best_ref, 0);
+ memcpy(s->block_state, p_state, sizeof(s->block_state));
+ return score;
+ }
+}
+
+static void encode_q_branch2(SnowContext *s, int level, int x, int y){
+ const int w= s->b_width << s->block_max_depth;
+ const int rem_depth= s->block_max_depth - level;
+ const int index= (x + y*w) << rem_depth;
+ int trx= (x+1)<<rem_depth;
+ BlockNode *b= &s->block[index];
+ const BlockNode *left = x ? &s->block[index-1] : &null_block;
+ const BlockNode *top = y ? &s->block[index-w] : &null_block;
+ const BlockNode *tl = y && x ? &s->block[index-w-1] : left;
+ const BlockNode *tr = y && trx<w && ((x&1)==0 || level==0) ? &s->block[index-w+(1<<rem_depth)] : tl; //FIXME use lt
+ int pl = left->color[0];
+ int pcb= left->color[1];
+ int pcr= left->color[2];
+ int pmx, pmy;
+ int ref_context= av_log2(2*left->ref) + av_log2(2*top->ref);
+ int mx_context= av_log2(2*FFABS(left->mx - top->mx)) + 16*!!b->ref;
+ int my_context= av_log2(2*FFABS(left->my - top->my)) + 16*!!b->ref;
+ int s_context= 2*left->level + 2*top->level + tl->level + tr->level;
+
+ if(s->keyframe){
+ set_blocks(s, level, x, y, pl, pcb, pcr, 0, 0, 0, BLOCK_INTRA);
+ return;
+ }
+
+ if(level!=s->block_max_depth){
+ if(same_block(b,b+1) && same_block(b,b+w) && same_block(b,b+w+1)){
+ put_rac(&s->c, &s->block_state[4 + s_context], 1);
+ }else{
+ put_rac(&s->c, &s->block_state[4 + s_context], 0);
+ encode_q_branch2(s, level+1, 2*x+0, 2*y+0);
+ encode_q_branch2(s, level+1, 2*x+1, 2*y+0);
+ encode_q_branch2(s, level+1, 2*x+0, 2*y+1);
+ encode_q_branch2(s, level+1, 2*x+1, 2*y+1);
+ return;
+ }
+ }
+ if(b->type & BLOCK_INTRA){
+ pred_mv(s, &pmx, &pmy, 0, left, top, tr);
+ put_rac(&s->c, &s->block_state[1 + (left->type&1) + (top->type&1)], 1);
+ put_symbol(&s->c, &s->block_state[32], b->color[0]-pl , 1);
+ if (s->nb_planes > 2) {
+ put_symbol(&s->c, &s->block_state[64], b->color[1]-pcb, 1);
+ put_symbol(&s->c, &s->block_state[96], b->color[2]-pcr, 1);
+ }
+ set_blocks(s, level, x, y, b->color[0], b->color[1], b->color[2], pmx, pmy, 0, BLOCK_INTRA);
+ }else{
+ pred_mv(s, &pmx, &pmy, b->ref, left, top, tr);
+ put_rac(&s->c, &s->block_state[1 + (left->type&1) + (top->type&1)], 0);
+ if(s->ref_frames > 1)
+ put_symbol(&s->c, &s->block_state[128 + 1024 + 32*ref_context], b->ref, 0);
+ put_symbol(&s->c, &s->block_state[128 + 32*mx_context], b->mx - pmx, 1);
+ put_symbol(&s->c, &s->block_state[128 + 32*my_context], b->my - pmy, 1);
+ set_blocks(s, level, x, y, pl, pcb, pcr, b->mx, b->my, b->ref, 0);
+ }
+}
+
+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>>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
+ const int b_stride = s->b_width << s->block_max_depth;
+ const int w= p->width;
+ const int h= p->height;
+ int index= mb_x + mb_y*b_stride;
+ BlockNode *b= &s->block[index];
+ BlockNode backup= *b;
+ 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));
+
+ for(i=0; i<4; i++){
+ 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_h*mb_y2 + block_h/2;
+
+ 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_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_h*mb_y - block_h/2))*obmc_stride;
+ int obmc_v= obmc[index];
+ int d;
+ if(y<0) obmc_v += obmc[index + block_h*obmc_stride];
+ if(x<0) obmc_v += obmc[index + block_w];
+ 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
+
+ d = -dst[index] + (1<<(FRAC_BITS-1));
+ dst[index] = d;
+ ab += (src[x2 + y2*ref_stride] - (d>>FRAC_BITS)) * obmc_v;
+ aa += obmc_v * obmc_v; //FIXME precalculate this
+ }
+ }
+ }
+ *b= backup;
+
+ return av_clip_uint8( ROUNDED_DIV(ab<<LOG2_OBMC_MAX, aa) ); //FIXME we should not need clipping
+}
+
+static inline int get_block_bits(SnowContext *s, int x, int y, int w){
+ const int b_stride = s->b_width << s->block_max_depth;
+ const int b_height = s->b_height<< s->block_max_depth;
+ int index= x + y*b_stride;
+ const BlockNode *b = &s->block[index];
+ const BlockNode *left = x ? &s->block[index-1] : &null_block;
+ const BlockNode *top = y ? &s->block[index-b_stride] : &null_block;
+ const BlockNode *tl = y && x ? &s->block[index-b_stride-1] : left;
+ const BlockNode *tr = y && x+w<b_stride ? &s->block[index-b_stride+w] : tl;
+ int dmx, dmy;
+// int mx_context= av_log2(2*FFABS(left->mx - top->mx));
+// int my_context= av_log2(2*FFABS(left->my - top->my));
+
+ if(x<0 || x>=b_stride || y>=b_height)
+ return 0;
+/*
+1 0 0
+01X 1-2 1
+001XX 3-6 2-3
+0001XXX 7-14 4-7
+00001XXXX 15-30 8-15
+*/
+//FIXME try accurate rate
+//FIXME intra and inter predictors if surrounding blocks are not the same type
+ if(b->type & BLOCK_INTRA){
+ return 3+2*( av_log2(2*FFABS(left->color[0] - b->color[0]))
+ + av_log2(2*FFABS(left->color[1] - b->color[1]))
+ + av_log2(2*FFABS(left->color[2] - b->color[2])));
+ }else{
+ pred_mv(s, &dmx, &dmy, b->ref, left, top, tr);
+ dmx-= b->mx;
+ dmy-= b->my;
+ return 2*(1 + av_log2(2*FFABS(dmx)) //FIXME kill the 2* can be merged in lambda
+ + av_log2(2*FFABS(dmy))
+ + av_log2(2*b->ref));
+ }
+}
+
+static int get_block_rd(SnowContext *s, int mb_x, int mb_y, int plane_index, uint8_t (*obmc_edged)[MB_SIZE * 2]){
+ Plane *p= &s->plane[plane_index];
+ const int block_size = MB_SIZE >> s->block_max_depth;
+ 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];
+ IDWTELEM *pred= (IDWTELEM*)s->m.obmc_scratchpad + plane_index*block_size*block_size*4;
+ uint8_t *cur = s->scratchbuf;
+ uint8_t *tmp = s->emu_edge_buffer;
+ const int b_stride = s->b_width << s->block_max_depth;
+ const int b_height = s->b_height<< s->block_max_depth;
+ const int w= p->width;
+ const int h= p->height;
+ int distortion;
+ 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_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_h*2, h-sy);
+ int i,x,y;
+
+ 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];
+ const IDWTELEM *pred1 = pred + y*obmc_stride;
+ uint8_t *cur1 = cur + y*ref_stride;
+ uint8_t *dst1 = dst + sx + (sy+y)*ref_stride;
+ for(x=x0; x<x1; x++){
+#if FRAC_BITS >= LOG2_OBMC_MAX
+ int v = (cur1[x] * obmc1[x]) << (FRAC_BITS - LOG2_OBMC_MAX);
+#else
+ int v = (cur1[x] * obmc1[x] + (1<<(LOG2_OBMC_MAX - FRAC_BITS-1))) >> (LOG2_OBMC_MAX - FRAC_BITS);
+#endif
+ v = (v + pred1[x]) >> FRAC_BITS;
+ if(v&(~255)) v= ~(v>>31);
+ dst1[x] = v;
+ }
+ }
+
+ /* copy the regions where obmc[] = (uint8_t)256 */
+ if(LOG2_OBMC_MAX == 8
+ && (mb_x == 0 || mb_x == b_stride-1)
+ && (mb_y == 0 || mb_y == b_height-1)){
+ if(mb_x == 0)
+ x1 = block_w;
+ else
+ x0 = block_w;
+ if(mb_y == 0)
+ y1 = block_h;
+ else
+ y0 = block_h;
+ for(y=y0; y<y1; y++)
+ memcpy(dst + sx+x0 + (sy+y)*ref_stride, cur + x0 + y*ref_stride, x1-x0);
+ }
+
+ if(block_w==16){
+ /* FIXME rearrange dsputil to fit 32x32 cmp functions */
+ /* FIXME check alignment of the cmp wavelet vs the encoding wavelet */
+ /* FIXME cmps overlap but do not cover the wavelet's whole support.
+ * So improving the score of one block is not strictly guaranteed
+ * to improve the score of the whole frame, thus iterative motion
+ * estimation does not always converge. */
+ if(s->avctx->me_cmp == FF_CMP_W97)
+ distortion = ff_w97_32_c(&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, 32);
+ else if(s->avctx->me_cmp == FF_CMP_W53)
+ distortion = ff_w53_32_c(&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, 32);
+ else{
+ distortion = 0;
+ for(i=0; i<4; i++){
+ int off = sx+16*(i&1) + (sy+16*(i>>1))*ref_stride;
+ distortion += s->mecc.me_cmp[0](&s->m, src + off, dst + off, ref_stride, 16);
+ }
+ }
+ }else{
+ av_assert2(block_w==8);
+ distortion = s->mecc.me_cmp[0](&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, block_w*2);
+ }
+
+ if(plane_index==0){
+ for(i=0; i<4; i++){
+/* ..RRr
+ * .RXx.
+ * rxx..
+ */
+ rate += get_block_bits(s, mb_x + (i&1) - (i>>1), mb_y + (i>>1), 1);
+ }
+ if(mb_x == b_stride-2)
+ rate += get_block_bits(s, mb_x + 1, mb_y + 1, 1);
+ }
+ return distortion + rate*penalty_factor;
+}
+
+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>>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];
+ //FIXME zero_dst is const but add_yblock changes dst if add is 0 (this is never the case for dst=zero_dst
+ // const has only been removed from zero_dst to suppress a warning
+ static IDWTELEM zero_dst[4096]; //FIXME
+ const int b_stride = s->b_width << s->block_max_depth;
+ const int w= p->width;
+ const int h= p->height;
+ int distortion= 0;
+ 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_h*mb_y2 + block_h/2;
+
+ add_yblock(s, 0, NULL, zero_dst, dst, obmc,
+ 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_h; y2++)
+ memcpy(dst + x + y2*ref_stride, src + x + y2*ref_stride, block_w);
+ if(x<0){
+ 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_h; y2++)
+ memcpy(dst + w + y2*ref_stride, src + w + y2*ref_stride, x+block_w - w);
+ }
+
+ av_assert1(block_w== 8 || block_w==16);
+ distortion += s->mecc.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){
+ BlockNode *b= &s->block[mb_x+mb_y*b_stride];
+ int merged= same_block(b,b+1) && same_block(b,b+b_stride) && same_block(b,b+b_stride+1);
+
+/* ..RRRr
+ * .RXXx.
+ * .RXXx.
+ * rxxx.
+ */
+ if(merged)
+ rate = get_block_bits(s, mb_x, mb_y, 2);
+ for(i=merged?4:0; i<9; i++){
+ static const int dxy[9][2] = {{0,0},{1,0},{0,1},{1,1},{2,0},{2,1},{-1,2},{0,2},{1,2}};
+ rate += get_block_bits(s, mb_x + dxy[i][0], mb_y + dxy[i][1], 1);
+ }
+ }
+ return distortion + rate*penalty_factor;
+}
+
+static int encode_subband_c0run(SnowContext *s, SubBand *b, const IDWTELEM *src, const IDWTELEM *parent, int stride, int orientation){
+ const int w= b->width;
+ const int h= b->height;
+ int x, y;
+
+ if(1){
+ int run=0;
+ int *runs = s->run_buffer;
+ int run_index=0;
+ int max_index;
+
+ for(y=0; y<h; y++){
+ for(x=0; x<w; x++){
+ int v, p=0;
+ int /*ll=0, */l=0, lt=0, t=0, rt=0;
+ v= src[x + y*stride];
+
+ if(y){
+ t= src[x + (y-1)*stride];
+ if(x){
+ lt= src[x - 1 + (y-1)*stride];
+ }
+ if(x + 1 < w){
+ rt= src[x + 1 + (y-1)*stride];
+ }
+ }
+ if(x){
+ l= src[x - 1 + y*stride];
+ /*if(x > 1){
+ if(orientation==1) ll= src[y + (x-2)*stride];
+ else ll= src[x - 2 + y*stride];
+ }*/
+ }
+ if(parent){
+ int px= x>>1;
+ int py= y>>1;
+ if(px<b->parent->width && py<b->parent->height)
+ p= parent[px + py*2*stride];
+ }
+ if(!(/*ll|*/l|lt|t|rt|p)){
+ if(v){
+ runs[run_index++]= run;
+ run=0;
+ }else{
+ run++;
+ }
+ }
+ }
+ }
+ max_index= run_index;
+ runs[run_index++]= run;
+ run_index=0;
+ run= runs[run_index++];
+
+ put_symbol2(&s->c, b->state[30], max_index, 0);
+ if(run_index <= max_index)
+ put_symbol2(&s->c, b->state[1], run, 3);
+
+ for(y=0; y<h; y++){
+ if(s->c.bytestream_end - s->c.bytestream < w*40){
+ av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
+ return -1;
+ }
+ for(x=0; x<w; x++){
+ int v, p=0;
+ int /*ll=0, */l=0, lt=0, t=0, rt=0;
+ v= src[x + y*stride];
+
+ if(y){
+ t= src[x + (y-1)*stride];
+ if(x){
+ lt= src[x - 1 + (y-1)*stride];
+ }
+ if(x + 1 < w){
+ rt= src[x + 1 + (y-1)*stride];
+ }
+ }
+ if(x){
+ l= src[x - 1 + y*stride];
+ /*if(x > 1){
+ if(orientation==1) ll= src[y + (x-2)*stride];
+ else ll= src[x - 2 + y*stride];
+ }*/
+ }
+ if(parent){
+ int px= x>>1;
+ int py= y>>1;
+ if(px<b->parent->width && py<b->parent->height)
+ p= parent[px + py*2*stride];
+ }
+ if(/*ll|*/l|lt|t|rt|p){
+ int context= av_log2(/*FFABS(ll) + */3*FFABS(l) + FFABS(lt) + 2*FFABS(t) + FFABS(rt) + FFABS(p));
+
+ put_rac(&s->c, &b->state[0][context], !!v);
+ }else{
+ if(!run){
+ run= runs[run_index++];
+
+ if(run_index <= max_index)
+ put_symbol2(&s->c, b->state[1], run, 3);
+ av_assert2(v);
+ }else{
+ run--;
+ av_assert2(!v);
+ }
+ }
+ if(v){
+ int context= av_log2(/*FFABS(ll) + */3*FFABS(l) + FFABS(lt) + 2*FFABS(t) + FFABS(rt) + FFABS(p));
+ int l2= 2*FFABS(l) + (l<0);
+ int t2= 2*FFABS(t) + (t<0);
+
+ put_symbol2(&s->c, b->state[context + 2], FFABS(v)-1, context-4);
+ put_rac(&s->c, &b->state[0][16 + 1 + 3 + ff_quant3bA[l2&0xFF] + 3*ff_quant3bA[t2&0xFF]], v<0);
+ }
+ }
+ }
+ }
+ return 0;
+}
+
+static int encode_subband(SnowContext *s, SubBand *b, const IDWTELEM *src, const IDWTELEM *parent, int stride, int orientation){
+// encode_subband_qtree(s, b, src, parent, stride, orientation);
+// encode_subband_z0run(s, b, src, parent, stride, orientation);
+ return encode_subband_c0run(s, b, src, parent, stride, orientation);
+// encode_subband_dzr(s, b, src, parent, stride, orientation);
+}
+
+static av_always_inline int check_block(SnowContext *s, int mb_x, int mb_y, int p[3], int intra, uint8_t (*obmc_edged)[MB_SIZE * 2], int *best_rd){
+ const int b_stride= s->b_width << s->block_max_depth;
+ BlockNode *block= &s->block[mb_x + mb_y * b_stride];
+ BlockNode backup= *block;
+ unsigned value;
+ int rd, index;
+
+ av_assert2(mb_x>=0 && mb_y>=0);
+ av_assert2(mb_x<b_stride);
+
+ if(intra){
+ block->color[0] = p[0];
+ block->color[1] = p[1];
+ block->color[2] = p[2];
+ block->type |= BLOCK_INTRA;
+ }else{
+ index= (p[0] + 31*p[1]) & (ME_CACHE_SIZE-1);
+ value= s->me_cache_generation + (p[0]>>10) + (p[1]<<6) + (block->ref<<12);
+ if(s->me_cache[index] == value)
+ return 0;
+ s->me_cache[index]= value;
+
+ block->mx= p[0];
+ block->my= p[1];
+ block->type &= ~BLOCK_INTRA;
+ }
+
+ rd= get_block_rd(s, mb_x, mb_y, 0, obmc_edged);
+
+//FIXME chroma
+ if(rd < *best_rd){
+ *best_rd= rd;
+ return 1;
+ }else{
+ *block= backup;
+ return 0;
+ }
+}
+
+/* special case for int[2] args we discard afterwards,
+ * fixes compilation problem with gcc 2.95 */
+static av_always_inline int check_block_inter(SnowContext *s, int mb_x, int mb_y, int p0, int p1, uint8_t (*obmc_edged)[MB_SIZE * 2], int *best_rd){
+ int p[2] = {p0, p1};
+ return check_block(s, mb_x, mb_y, p, 0, obmc_edged, best_rd);
+}
+
+static av_always_inline int check_4block_inter(SnowContext *s, int mb_x, int mb_y, int p0, int p1, int ref, int *best_rd){
+ const int b_stride= s->b_width << s->block_max_depth;
+ BlockNode *block= &s->block[mb_x + mb_y * b_stride];
+ BlockNode backup[4];
+ unsigned value;
+ int rd, index;
+
+ /* We don't initialize backup[] during variable declaration, because
+ * that fails to compile on MSVC: "cannot convert from 'BlockNode' to
+ * 'int16_t'". */
+ backup[0] = block[0];
+ backup[1] = block[1];
+ backup[2] = block[b_stride];
+ backup[3] = block[b_stride + 1];
+
+ av_assert2(mb_x>=0 && mb_y>=0);
+ av_assert2(mb_x<b_stride);
+ av_assert2(((mb_x|mb_y)&1) == 0);
+
+ index= (p0 + 31*p1) & (ME_CACHE_SIZE-1);
+ value= s->me_cache_generation + (p0>>10) + (p1<<6) + (block->ref<<12);
+ if(s->me_cache[index] == value)
+ return 0;
+ s->me_cache[index]= value;
+
+ block->mx= p0;
+ block->my= p1;
+ block->ref= ref;
+ block->type &= ~BLOCK_INTRA;
+ block[1]= block[b_stride]= block[b_stride+1]= *block;
+
+ rd= get_4block_rd(s, mb_x, mb_y, 0);
+
+//FIXME chroma
+ if(rd < *best_rd){
+ *best_rd= rd;
+ return 1;
+ }else{
+ block[0]= backup[0];
+ block[1]= backup[1];
+ block[b_stride]= backup[2];
+ block[b_stride+1]= backup[3];
+ return 0;
+ }
+}
+
+static void iterative_me(SnowContext *s){
+ int pass, mb_x, mb_y;
+ const int b_width = s->b_width << s->block_max_depth;
+ const int b_height= s->b_height << s->block_max_depth;
+ const int b_stride= b_width;
+ int color[3];
+
+ {
+ RangeCoder r = s->c;
+ uint8_t state[sizeof(s->block_state)];
+ memcpy(state, s->block_state, sizeof(s->block_state));
+ for(mb_y= 0; mb_y<s->b_height; mb_y++)
+ for(mb_x= 0; mb_x<s->b_width; mb_x++)
+ encode_q_branch(s, 0, mb_x, mb_y);
+ s->c = r;
+ memcpy(s->block_state, state, sizeof(s->block_state));
+ }
+
+ for(pass=0; pass<25; pass++){
+ int change= 0;
+
+ for(mb_y= 0; mb_y<b_height; mb_y++){
+ for(mb_x= 0; mb_x<b_width; mb_x++){
+ int dia_change, i, j, ref;
+ int best_rd= INT_MAX, ref_rd;
+ BlockNode backup, ref_b;
+ const int index= mb_x + mb_y * b_stride;
+ BlockNode *block= &s->block[index];
+ BlockNode *tb = mb_y ? &s->block[index-b_stride ] : NULL;
+ BlockNode *lb = mb_x ? &s->block[index -1] : NULL;
+ BlockNode *rb = mb_x+1<b_width ? &s->block[index +1] : NULL;
+ BlockNode *bb = mb_y+1<b_height ? &s->block[index+b_stride ] : NULL;
+ BlockNode *tlb= mb_x && mb_y ? &s->block[index-b_stride-1] : NULL;
+ BlockNode *trb= mb_x+1<b_width && mb_y ? &s->block[index-b_stride+1] : NULL;
+ BlockNode *blb= mb_x && mb_y+1<b_height ? &s->block[index+b_stride-1] : NULL;
+ BlockNode *brb= mb_x+1<b_width && mb_y+1<b_height ? &s->block[index+b_stride+1] : NULL;
+ const int b_w= (MB_SIZE >> s->block_max_depth);
+ uint8_t obmc_edged[MB_SIZE * 2][MB_SIZE * 2];
+
+ if(pass && (block->type & BLOCK_OPT))
+ continue;
+ block->type |= BLOCK_OPT;
+
+ backup= *block;
+
+ if(!s->me_cache_generation)
+ memset(s->me_cache, 0, sizeof(s->me_cache));
+ s->me_cache_generation += 1<<22;
+
+ //FIXME precalculate
+ {
+ int x, y;
+ for (y = 0; y < b_w * 2; y++)
+ memcpy(obmc_edged[y], ff_obmc_tab[s->block_max_depth] + y * b_w * 2, b_w * 2);
+ if(mb_x==0)
+ for(y=0; y<b_w*2; y++)
+ memset(obmc_edged[y], obmc_edged[y][0] + obmc_edged[y][b_w-1], b_w);
+ if(mb_x==b_stride-1)
+ for(y=0; y<b_w*2; y++)
+ memset(obmc_edged[y]+b_w, obmc_edged[y][b_w] + obmc_edged[y][b_w*2-1], b_w);
+ if(mb_y==0){
+ for(x=0; x<b_w*2; x++)
+ obmc_edged[0][x] += obmc_edged[b_w-1][x];
+ for(y=1; y<b_w; y++)
+ memcpy(obmc_edged[y], obmc_edged[0], b_w*2);
+ }
+ if(mb_y==b_height-1){
+ for(x=0; x<b_w*2; x++)
+ obmc_edged[b_w*2-1][x] += obmc_edged[b_w][x];
+ for(y=b_w; y<b_w*2-1; y++)
+ memcpy(obmc_edged[y], obmc_edged[b_w*2-1], b_w*2);
+ }
+ }
+
+ //skip stuff outside the picture
+ if(mb_x==0 || mb_y==0 || mb_x==b_width-1 || mb_y==b_height-1){
+ uint8_t *src= s-> input_picture->data[0];
+ 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_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_h*2; y++)
+ memcpy(dst + sx + y*stride, src + sx + y*stride, block_w*2);
+ if(sx<0){
+ 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_h*2; y++)
+ memcpy(dst + w + y*stride, src + w + y*stride, sx+block_w*2 - w);
+ }
+ }
+
+ // intra(black) = neighbors' contribution to the current block
+ for(i=0; i < s->nb_planes; i++)
+ color[i]= get_dc(s, mb_x, mb_y, i);
+
+ // get previous score (cannot be cached due to OBMC)
+ if(pass > 0 && (block->type&BLOCK_INTRA)){
+ int color0[3]= {block->color[0], block->color[1], block->color[2]};
+ check_block(s, mb_x, mb_y, color0, 1, obmc_edged, &best_rd);
+ }else
+ check_block_inter(s, mb_x, mb_y, block->mx, block->my, obmc_edged, &best_rd);
+
+ ref_b= *block;
+ ref_rd= best_rd;
+ for(ref=0; ref < s->ref_frames; ref++){
+ int16_t (*mvr)[2]= &s->ref_mvs[ref][index];
+ if(s->ref_scores[ref][index] > s->ref_scores[ref_b.ref][index]*3/2) //FIXME tune threshold
+ continue;
+ block->ref= ref;
+ best_rd= INT_MAX;
+
+ check_block_inter(s, mb_x, mb_y, mvr[0][0], mvr[0][1], obmc_edged, &best_rd);
+ check_block_inter(s, mb_x, mb_y, 0, 0, obmc_edged, &best_rd);
+ if(tb)
+ check_block_inter(s, mb_x, mb_y, mvr[-b_stride][0], mvr[-b_stride][1], obmc_edged, &best_rd);
+ if(lb)
+ check_block_inter(s, mb_x, mb_y, mvr[-1][0], mvr[-1][1], obmc_edged, &best_rd);
+ if(rb)
+ check_block_inter(s, mb_x, mb_y, mvr[1][0], mvr[1][1], obmc_edged, &best_rd);
+ if(bb)
+ check_block_inter(s, mb_x, mb_y, mvr[b_stride][0], mvr[b_stride][1], obmc_edged, &best_rd);
+
+ /* fullpel ME */
+ //FIXME avoid subpel interpolation / round to nearest integer
+ do{
+ dia_change=0;
+ for(i=0; i<FFMAX(s->avctx->dia_size, 1); i++){
+ for(j=0; j<i; j++){
+ dia_change |= check_block_inter(s, mb_x, mb_y, block->mx+4*(i-j), block->my+(4*j), obmc_edged, &best_rd);
+ dia_change |= check_block_inter(s, mb_x, mb_y, block->mx-4*(i-j), block->my-(4*j), obmc_edged, &best_rd);
+ dia_change |= check_block_inter(s, mb_x, mb_y, block->mx+4*(i-j), block->my-(4*j), obmc_edged, &best_rd);
+ dia_change |= check_block_inter(s, mb_x, mb_y, block->mx-4*(i-j), block->my+(4*j), obmc_edged, &best_rd);
+ }
+ }
+ }while(dia_change);
+ /* subpel ME */
+ do{
+ static const int square[8][2]= {{+1, 0},{-1, 0},{ 0,+1},{ 0,-1},{+1,+1},{-1,-1},{+1,-1},{-1,+1},};
+ dia_change=0;
+ for(i=0; i<8; i++)
+ dia_change |= check_block_inter(s, mb_x, mb_y, block->mx+square[i][0], block->my+square[i][1], obmc_edged, &best_rd);
+ }while(dia_change);
+ //FIXME or try the standard 2 pass qpel or similar
+
+ mvr[0][0]= block->mx;
+ mvr[0][1]= block->my;
+ if(ref_rd > best_rd){
+ ref_rd= best_rd;
+ ref_b= *block;
+ }
+ }
+ best_rd= ref_rd;
+ *block= ref_b;
+ check_block(s, mb_x, mb_y, color, 1, obmc_edged, &best_rd);
+ //FIXME RD style color selection
+ if(!same_block(block, &backup)){
+ if(tb ) tb ->type &= ~BLOCK_OPT;
+ if(lb ) lb ->type &= ~BLOCK_OPT;
+ if(rb ) rb ->type &= ~BLOCK_OPT;
+ if(bb ) bb ->type &= ~BLOCK_OPT;
+ if(tlb) tlb->type &= ~BLOCK_OPT;
+ if(trb) trb->type &= ~BLOCK_OPT;
+ if(blb) blb->type &= ~BLOCK_OPT;
+ if(brb) brb->type &= ~BLOCK_OPT;
+ change ++;
+ }
+ }
+ }
+ av_log(s->avctx, AV_LOG_ERROR, "pass:%d changed:%d\n", pass, change);
+ if(!change)
+ break;
+ }
+
+ if(s->block_max_depth == 1){
+ int change= 0;
+ for(mb_y= 0; mb_y<b_height; mb_y+=2){
+ for(mb_x= 0; mb_x<b_width; mb_x+=2){
+ int i;
+ int best_rd, init_rd;
+ const int index= mb_x + mb_y * b_stride;
+ BlockNode *b[4];
+
+ b[0]= &s->block[index];
+ b[1]= b[0]+1;
+ b[2]= b[0]+b_stride;
+ b[3]= b[2]+1;
+ if(same_block(b[0], b[1]) &&
+ same_block(b[0], b[2]) &&
+ same_block(b[0], b[3]))
+ continue;
+
+ if(!s->me_cache_generation)
+ memset(s->me_cache, 0, sizeof(s->me_cache));
+ s->me_cache_generation += 1<<22;
+
+ init_rd= best_rd= get_4block_rd(s, mb_x, mb_y, 0);
+
+ //FIXME more multiref search?
+ check_4block_inter(s, mb_x, mb_y,
+ (b[0]->mx + b[1]->mx + b[2]->mx + b[3]->mx + 2) >> 2,
+ (b[0]->my + b[1]->my + b[2]->my + b[3]->my + 2) >> 2, 0, &best_rd);
+
+ for(i=0; i<4; i++)
+ if(!(b[i]->type&BLOCK_INTRA))
+ check_4block_inter(s, mb_x, mb_y, b[i]->mx, b[i]->my, b[i]->ref, &best_rd);
+
+ if(init_rd != best_rd)
+ change++;
+ }
+ }
+ av_log(s->avctx, AV_LOG_ERROR, "pass:4mv changed:%d\n", change*4);
+ }
+}
+
+static void encode_blocks(SnowContext *s, int search){
+ int x, y;
+ int w= s->b_width;
+ int h= s->b_height;
+
+ if(s->avctx->me_method == ME_ITER && !s->keyframe && search)
+ iterative_me(s);
+
+ for(y=0; y<h; y++){
+ if(s->c.bytestream_end - s->c.bytestream < w*MB_SIZE*MB_SIZE*3){ //FIXME nicer limit
+ av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
+ return;
+ }
+ for(x=0; x<w; x++){
+ if(s->avctx->me_method == ME_ITER || !search)
+ encode_q_branch2(s, 0, x, y);
+ else
+ encode_q_branch (s, 0, x, y);
+ }
+ }
+}
+
+static void quantize(SnowContext *s, SubBand *b, IDWTELEM *dst, DWTELEM *src, int stride, int bias){
+ const int w= b->width;
+ const int h= b->height;
+ const int qlog= av_clip(s->qlog + b->qlog, 0, QROOT*16);
+ const int qmul= ff_qexp[qlog&(QROOT-1)]<<((qlog>>QSHIFT) + ENCODER_EXTRA_BITS);
+ int x,y, thres1, thres2;
+
+ if(s->qlog == LOSSLESS_QLOG){
+ for(y=0; y<h; y++)
+ for(x=0; x<w; x++)
+ dst[x + y*stride]= src[x + y*stride];
+ return;
+ }
+
+ bias= bias ? 0 : (3*qmul)>>3;
+ thres1= ((qmul - bias)>>QEXPSHIFT) - 1;
+ thres2= 2*thres1;
+
+ if(!bias){
+ for(y=0; y<h; y++){
+ for(x=0; x<w; x++){
+ int i= src[x + y*stride];
+
+ if((unsigned)(i+thres1) > thres2){
+ if(i>=0){
+ i<<= QEXPSHIFT;
+ i/= qmul; //FIXME optimize
+ dst[x + y*stride]= i;
+ }else{
+ i= -i;
+ i<<= QEXPSHIFT;
+ i/= qmul; //FIXME optimize
+ dst[x + y*stride]= -i;
+ }
+ }else
+ dst[x + y*stride]= 0;
+ }
+ }
+ }else{
+ for(y=0; y<h; y++){
+ for(x=0; x<w; x++){
+ int i= src[x + y*stride];
+
+ if((unsigned)(i+thres1) > thres2){
+ if(i>=0){
+ i<<= QEXPSHIFT;
+ i= (i + bias) / qmul; //FIXME optimize
+ dst[x + y*stride]= i;
+ }else{
+ i= -i;
+ i<<= QEXPSHIFT;
+ i= (i + bias) / qmul; //FIXME optimize
+ dst[x + y*stride]= -i;
+ }
+ }else
+ dst[x + y*stride]= 0;
+ }
+ }
+ }
+}
+
+static void dequantize(SnowContext *s, SubBand *b, IDWTELEM *src, int stride){
+ const int w= b->width;
+ const int h= b->height;
+ const int qlog= av_clip(s->qlog + b->qlog, 0, QROOT*16);
+ const int qmul= ff_qexp[qlog&(QROOT-1)]<<(qlog>>QSHIFT);
+ const int qadd= (s->qbias*qmul)>>QBIAS_SHIFT;
+ int x,y;
+
+ if(s->qlog == LOSSLESS_QLOG) return;
+
+ for(y=0; y<h; y++){
+ for(x=0; x<w; x++){
+ int i= src[x + y*stride];
+ if(i<0){
+ src[x + y*stride]= -((-i*qmul + qadd)>>(QEXPSHIFT)); //FIXME try different bias
+ }else if(i>0){
+ src[x + y*stride]= (( i*qmul + qadd)>>(QEXPSHIFT));
+ }
+ }
+ }
+}
+
+static void decorrelate(SnowContext *s, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median){
+ const int w= b->width;
+ const int h= b->height;
+ int x,y;
+
+ for(y=h-1; y>=0; y--){
+ for(x=w-1; x>=0; x--){
+ int i= x + y*stride;
+
+ if(x){
+ if(use_median){
+ if(y && x+1<w) src[i] -= mid_pred(src[i - 1], src[i - stride], src[i - stride + 1]);
+ else src[i] -= src[i - 1];
+ }else{
+ if(y) src[i] -= mid_pred(src[i - 1], src[i - stride], src[i - 1] + src[i - stride] - src[i - 1 - stride]);
+ else src[i] -= src[i - 1];
+ }
+ }else{
+ if(y) src[i] -= src[i - stride];
+ }
+ }
+ }
+}
+
+static void correlate(SnowContext *s, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median){
+ const int w= b->width;
+ const int h= b->height;
+ int x,y;
+
+ for(y=0; y<h; y++){
+ for(x=0; x<w; x++){
+ int i= x + y*stride;
+
+ if(x){
+ if(use_median){
+ if(y && x+1<w) src[i] += mid_pred(src[i - 1], src[i - stride], src[i - stride + 1]);
+ else src[i] += src[i - 1];
+ }else{
+ if(y) src[i] += mid_pred(src[i - 1], src[i - stride], src[i - 1] + src[i - stride] - src[i - 1 - stride]);
+ else src[i] += src[i - 1];
+ }
+ }else{
+ if(y) src[i] += src[i - stride];
+ }
+ }
+ }
+}
+
+static void encode_qlogs(SnowContext *s){
+ int plane_index, level, orientation;
+
+ for(plane_index=0; plane_index<FFMIN(s->nb_planes, 2); plane_index++){
+ for(level=0; level<s->spatial_decomposition_count; level++){
+ for(orientation=level ? 1:0; orientation<4; orientation++){
+ if(orientation==2) continue;
+ put_symbol(&s->c, s->header_state, s->plane[plane_index].band[level][orientation].qlog, 1);
+ }
+ }
+ }
+}
+
+static void encode_header(SnowContext *s){
+ int plane_index, i;
+ uint8_t kstate[32];
+
+ memset(kstate, MID_STATE, sizeof(kstate));
+
+ put_rac(&s->c, kstate, s->keyframe);
+ if(s->keyframe || s->always_reset){
+ ff_snow_reset_contexts(s);
+ s->last_spatial_decomposition_type=
+ s->last_qlog=
+ s->last_qbias=
+ s->last_mv_scale=
+ s->last_block_max_depth= 0;
+ for(plane_index=0; plane_index<2; plane_index++){
+ Plane *p= &s->plane[plane_index];
+ p->last_htaps=0;
+ p->last_diag_mc=0;
+ memset(p->last_hcoeff, 0, sizeof(p->last_hcoeff));
+ }
+ }
+ if(s->keyframe){
+ put_symbol(&s->c, s->header_state, s->version, 0);
+ put_rac(&s->c, s->header_state, s->always_reset);
+ put_symbol(&s->c, s->header_state, s->temporal_decomposition_type, 0);
+ put_symbol(&s->c, s->header_state, s->temporal_decomposition_count, 0);
+ put_symbol(&s->c, s->header_state, s->spatial_decomposition_count, 0);
+ put_symbol(&s->c, s->header_state, s->colorspace_type, 0);
+ if (s->nb_planes > 2) {
+ put_symbol(&s->c, s->header_state, s->chroma_h_shift, 0);
+ put_symbol(&s->c, s->header_state, s->chroma_v_shift, 0);
+ }
+ put_rac(&s->c, s->header_state, s->spatial_scalability);
+// put_rac(&s->c, s->header_state, s->rate_scalability);
+ put_symbol(&s->c, s->header_state, s->max_ref_frames-1, 0);
+
+ encode_qlogs(s);
+ }
+
+ if(!s->keyframe){
+ int update_mc=0;
+ for(plane_index=0; plane_index<FFMIN(s->nb_planes, 2); plane_index++){
+ Plane *p= &s->plane[plane_index];
+ update_mc |= p->last_htaps != p->htaps;
+ update_mc |= p->last_diag_mc != p->diag_mc;
+ update_mc |= !!memcmp(p->last_hcoeff, p->hcoeff, sizeof(p->hcoeff));
+ }
+ put_rac(&s->c, s->header_state, update_mc);
+ if(update_mc){
+ for(plane_index=0; plane_index<FFMIN(s->nb_planes, 2); plane_index++){
+ Plane *p= &s->plane[plane_index];
+ put_rac(&s->c, s->header_state, p->diag_mc);
+ put_symbol(&s->c, s->header_state, p->htaps/2-1, 0);
+ for(i= p->htaps/2; i; i--)
+ put_symbol(&s->c, s->header_state, FFABS(p->hcoeff[i]), 0);
+ }
+ }
+ if(s->last_spatial_decomposition_count != s->spatial_decomposition_count){
+ put_rac(&s->c, s->header_state, 1);
+ put_symbol(&s->c, s->header_state, s->spatial_decomposition_count, 0);
+ encode_qlogs(s);
+ }else
+ put_rac(&s->c, s->header_state, 0);
+ }
+
+ put_symbol(&s->c, s->header_state, s->spatial_decomposition_type - s->last_spatial_decomposition_type, 1);
+ put_symbol(&s->c, s->header_state, s->qlog - s->last_qlog , 1);
+ put_symbol(&s->c, s->header_state, s->mv_scale - s->last_mv_scale, 1);
+ put_symbol(&s->c, s->header_state, s->qbias - s->last_qbias , 1);
+ put_symbol(&s->c, s->header_state, s->block_max_depth - s->last_block_max_depth, 1);
+
+}
+
+static void update_last_header_values(SnowContext *s){
+ int plane_index;
+
+ if(!s->keyframe){
+ for(plane_index=0; plane_index<2; plane_index++){
+ Plane *p= &s->plane[plane_index];
+ p->last_diag_mc= p->diag_mc;
+ p->last_htaps = p->htaps;
+ memcpy(p->last_hcoeff, p->hcoeff, sizeof(p->hcoeff));
+ }
+ }
+
+ s->last_spatial_decomposition_type = s->spatial_decomposition_type;
+ s->last_qlog = s->qlog;
+ s->last_qbias = s->qbias;
+ s->last_mv_scale = s->mv_scale;
+ s->last_block_max_depth = s->block_max_depth;
+ s->last_spatial_decomposition_count = s->spatial_decomposition_count;
+}
+
+static int qscale2qlog(int qscale){
+ return rint(QROOT*log2(qscale / (float)FF_QP2LAMBDA))
+ + 61*QROOT/8; ///< 64 > 60
+}
+
+static int ratecontrol_1pass(SnowContext *s, AVFrame *pict)
+{
+ /* Estimate the frame's complexity as a sum of weighted dwt coefficients.
+ * FIXME we know exact mv bits at this point,
+ * but ratecontrol isn't set up to include them. */
+ uint32_t coef_sum= 0;
+ int level, orientation, delta_qlog;
+
+ for(level=0; level<s->spatial_decomposition_count; level++){
+ for(orientation=level ? 1 : 0; orientation<4; orientation++){
+ SubBand *b= &s->plane[0].band[level][orientation];
+ IDWTELEM *buf= b->ibuf;
+ const int w= b->width;
+ const int h= b->height;
+ const int stride= b->stride;
+ const int qlog= av_clip(2*QROOT + b->qlog, 0, QROOT*16);
+ const int qmul= ff_qexp[qlog&(QROOT-1)]<<(qlog>>QSHIFT);
+ const int qdiv= (1<<16)/qmul;
+ int x, y;
+ //FIXME this is ugly
+ for(y=0; y<h; y++)
+ for(x=0; x<w; x++)
+ buf[x+y*stride]= b->buf[x+y*stride];
+ if(orientation==0)
+ decorrelate(s, b, buf, stride, 1, 0);
+ for(y=0; y<h; y++)
+ for(x=0; x<w; x++)
+ coef_sum+= abs(buf[x+y*stride]) * qdiv >> 16;
+ }
+ }
+
+ /* ugly, ratecontrol just takes a sqrt again */
+ av_assert0(coef_sum < INT_MAX);
+ coef_sum = (uint64_t)coef_sum * coef_sum >> 16;
+
+ if(pict->pict_type == AV_PICTURE_TYPE_I){
+ s->m.current_picture.mb_var_sum= coef_sum;
+ s->m.current_picture.mc_mb_var_sum= 0;
+ }else{
+ s->m.current_picture.mc_mb_var_sum= coef_sum;
+ s->m.current_picture.mb_var_sum= 0;
+ }
+
+ pict->quality= ff_rate_estimate_qscale(&s->m, 1);
+ if (pict->quality < 0)
+ return INT_MIN;
+ s->lambda= pict->quality * 3/2;
+ delta_qlog= qscale2qlog(pict->quality) - s->qlog;
+ s->qlog+= delta_qlog;
+ return delta_qlog;
+}
+
+static void calculate_visual_weight(SnowContext *s, Plane *p){
+ int width = p->width;
+ int height= p->height;
+ int level, orientation, x, y;
+
+ for(level=0; level<s->spatial_decomposition_count; level++){
+ for(orientation=level ? 1 : 0; orientation<4; orientation++){
+ SubBand *b= &p->band[level][orientation];
+ IDWTELEM *ibuf= b->ibuf;
+ int64_t error=0;
+
+ memset(s->spatial_idwt_buffer, 0, sizeof(*s->spatial_idwt_buffer)*width*height);
+ ibuf[b->width/2 + b->height/2*b->stride]= 256*16;
+ ff_spatial_idwt(s->spatial_idwt_buffer, s->temp_idwt_buffer, width, height, width, s->spatial_decomposition_type, s->spatial_decomposition_count);
+ for(y=0; y<height; y++){
+ for(x=0; x<width; x++){
+ int64_t d= s->spatial_idwt_buffer[x + y*width]*16;
+ error += d*d;
+ }
+ }
+
+ b->qlog= (int)(log(352256.0/sqrt(error)) / log(pow(2.0, 1.0/QROOT))+0.5);
+ }
+ }
+}
+
+static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
+ const AVFrame *pict, int *got_packet)
+{
+ SnowContext *s = avctx->priv_data;
+ RangeCoder * const c= &s->c;
+ AVFrame *pic = pict;
+ const int width= s->avctx->width;
+ const int height= s->avctx->height;
+ int level, orientation, plane_index, i, y, ret;
+ uint8_t rc_header_bak[sizeof(s->header_state)];
+ uint8_t rc_block_bak[sizeof(s->block_state)];
+
+ if ((ret = ff_alloc_packet2(avctx, pkt, s->b_width*s->b_height*MB_SIZE*MB_SIZE*3 + FF_MIN_BUFFER_SIZE)) < 0)
+ return ret;
+
+ ff_init_range_encoder(c, pkt->data, pkt->size);
+ ff_build_rac_states(c, 0.05*(1LL<<32), 256-8);
+
+ for(i=0; i < s->nb_planes; i++){
+ int hshift= i ? s->chroma_h_shift : 0;
+ int vshift= i ? s->chroma_v_shift : 0;
+ for(y=0; y<FF_CEIL_RSHIFT(height, vshift); y++)
+ memcpy(&s->input_picture->data[i][y * s->input_picture->linesize[i]],
+ &pict->data[i][y * pict->linesize[i]],
+ FF_CEIL_RSHIFT(width, hshift));
+ s->mpvencdsp.draw_edges(s->input_picture->data[i], s->input_picture->linesize[i],
+ FF_CEIL_RSHIFT(width, hshift), FF_CEIL_RSHIFT(height, vshift),
+ EDGE_WIDTH >> hshift, EDGE_WIDTH >> vshift,
+ EDGE_TOP | EDGE_BOTTOM);
+
+ }
+ emms_c();
+ s->new_picture = pict;
+
+ s->m.picture_number= avctx->frame_number;
+ if(avctx->flags&CODEC_FLAG_PASS2){
+ s->m.pict_type = pic->pict_type = s->m.rc_context.entry[avctx->frame_number].new_pict_type;
+ s->keyframe = pic->pict_type == AV_PICTURE_TYPE_I;
+ if(!(avctx->flags&CODEC_FLAG_QSCALE)) {
+ pic->quality = ff_rate_estimate_qscale(&s->m, 0);
+ if (pic->quality < 0)
+ return -1;
+ }
+ }else{
+ s->keyframe= avctx->gop_size==0 || avctx->frame_number % avctx->gop_size == 0;
+ s->m.pict_type = pic->pict_type = s->keyframe ? AV_PICTURE_TYPE_I : AV_PICTURE_TYPE_P;
+ }
+
+ if(s->pass1_rc && avctx->frame_number == 0)
+ pic->quality = 2*FF_QP2LAMBDA;
+ if (pic->quality) {
+ s->qlog = qscale2qlog(pic->quality);
+ s->lambda = pic->quality * 3/2;
+ }
+ if (s->qlog < 0 || (!pic->quality && (avctx->flags & CODEC_FLAG_QSCALE))) {
+ s->qlog= LOSSLESS_QLOG;
+ s->lambda = 0;
+ }//else keep previous frame's qlog until after motion estimation
+
+ if (s->current_picture->data[0] && !(s->avctx->flags&CODEC_FLAG_EMU_EDGE)) {
+ int w = s->avctx->width;
+ int h = s->avctx->height;
+
+ s->mpvencdsp.draw_edges(s->current_picture->data[0],
+ s->current_picture->linesize[0], w , h ,
+ EDGE_WIDTH , EDGE_WIDTH , EDGE_TOP | EDGE_BOTTOM);
+ if (s->current_picture->data[2]) {
+ s->mpvencdsp.draw_edges(s->current_picture->data[1],
+ 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->mpvencdsp.draw_edges(s->current_picture->data[2],
+ 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_frame_start(s);
+ av_frame_unref(avctx->coded_frame);
+ ret = av_frame_ref(avctx->coded_frame, s->current_picture);
+ if (ret < 0)
+ return ret;
+
+ s->m.current_picture_ptr= &s->m.current_picture;
+ s->m.current_picture.f = s->current_picture;
+ s->m.current_picture.f->pts = pict->pts;
+ if(pic->pict_type == AV_PICTURE_TYPE_P){
+ int block_width = (width +15)>>4;
+ int block_height= (height+15)>>4;
+ int stride= s->current_picture->linesize[0];
+
+ av_assert0(s->current_picture->data[0]);
+ av_assert0(s->last_picture[0]->data[0]);
+
+ s->m.avctx= s->avctx;
+ s->m. last_picture.f = s->last_picture[0];
+ s->m. new_picture.f = s->input_picture;
+ s->m. last_picture_ptr= &s->m. last_picture;
+ s->m.linesize = stride;
+ s->m.uvlinesize= s->current_picture->linesize[1];
+ s->m.width = width;
+ s->m.height= height;
+ s->m.mb_width = block_width;
+ s->m.mb_height= block_height;
+ s->m.mb_stride= s->m.mb_width+1;
+ s->m.b8_stride= 2*s->m.mb_width+1;
+ s->m.f_code=1;
+ s->m.pict_type = pic->pict_type;
+ s->m.me_method= s->avctx->me_method;
+ s->m.me.scene_change_score=0;
+ s->m.flags= s->avctx->flags;
+ s->m.quarter_sample= (s->avctx->flags & CODEC_FLAG_QPEL)!=0;
+ s->m.out_format= FMT_H263;
+ s->m.unrestricted_mv= 1;
+
+ s->m.lambda = s->lambda;
+ s->m.qscale= (s->m.lambda*139 + FF_LAMBDA_SCALE*64) >> (FF_LAMBDA_SHIFT + 7);
+ s->lambda2= s->m.lambda2= (s->m.lambda*s->m.lambda + FF_LAMBDA_SCALE/2) >> FF_LAMBDA_SHIFT;
+
+ s->m.mecc= s->mecc; //move
+ s->m.qdsp= s->qdsp; //move
+ s->m.hdsp = s->hdsp;
+ ff_init_me(&s->m);
+ s->hdsp = s->m.hdsp;
+ s->mecc= s->m.mecc;
+ }
+
+ if(s->pass1_rc){
+ memcpy(rc_header_bak, s->header_state, sizeof(s->header_state));
+ memcpy(rc_block_bak, s->block_state, sizeof(s->block_state));
+ }
+
+redo_frame:
+
+ s->spatial_decomposition_count= 5;
+
+ while( !(width >>(s->chroma_h_shift + s->spatial_decomposition_count))
+ || !(height>>(s->chroma_v_shift + s->spatial_decomposition_count)))
+ s->spatial_decomposition_count--;
+
+ if (s->spatial_decomposition_count <= 0) {
+ av_log(avctx, AV_LOG_ERROR, "Resolution too low\n");
+ return AVERROR(EINVAL);
+ }
+
+ s->m.pict_type = pic->pict_type;
+ s->qbias = pic->pict_type == AV_PICTURE_TYPE_P ? 2 : 0;
+
+ ff_snow_common_init_after_header(avctx);
+
+ if(s->last_spatial_decomposition_count != s->spatial_decomposition_count){
+ for(plane_index=0; plane_index < s->nb_planes; plane_index++){
+ calculate_visual_weight(s, &s->plane[plane_index]);
+ }
+ }
+
+ encode_header(s);
+ s->m.misc_bits = 8*(s->c.bytestream - s->c.bytestream_start);
+ encode_blocks(s, 1);
+ s->m.mv_bits = 8*(s->c.bytestream - s->c.bytestream_start) - s->m.misc_bits;
+
+ for(plane_index=0; plane_index < s->nb_planes; plane_index++){
+ Plane *p= &s->plane[plane_index];
+ int w= p->width;
+ int h= p->height;
+ int x, y;
+// int bits= put_bits_count(&s->c.pb);
+
+ if (!s->memc_only) {
+ //FIXME optimize
+ if(pict->data[plane_index]) //FIXME gray hack
+ for(y=0; y<h; y++){
+ for(x=0; x<w; x++){
+ s->spatial_idwt_buffer[y*w + x]= pict->data[plane_index][y*pict->linesize[plane_index] + x]<<FRAC_BITS;
+ }
+ }
+ predict_plane(s, s->spatial_idwt_buffer, plane_index, 0);
+
+ if( plane_index==0
+ && pic->pict_type == AV_PICTURE_TYPE_P
+ && !(avctx->flags&CODEC_FLAG_PASS2)
+ && s->m.me.scene_change_score > s->avctx->scenechange_threshold){
+ ff_init_range_encoder(c, pkt->data, pkt->size);
+ ff_build_rac_states(c, 0.05*(1LL<<32), 256-8);
+ pic->pict_type= AV_PICTURE_TYPE_I;
+ s->keyframe=1;
+ s->current_picture->key_frame=1;
+ goto redo_frame;
+ }
+
+ if(s->qlog == LOSSLESS_QLOG){
+ for(y=0; y<h; y++){
+ for(x=0; x<w; x++){
+ s->spatial_dwt_buffer[y*w + x]= (s->spatial_idwt_buffer[y*w + x] + (1<<(FRAC_BITS-1))-1)>>FRAC_BITS;
+ }
+ }
+ }else{
+ for(y=0; y<h; y++){
+ for(x=0; x<w; x++){
+ s->spatial_dwt_buffer[y*w + x]=s->spatial_idwt_buffer[y*w + x]<<ENCODER_EXTRA_BITS;
+ }
+ }
+ }
+
+ ff_spatial_dwt(s->spatial_dwt_buffer, s->temp_dwt_buffer, w, h, w, s->spatial_decomposition_type, s->spatial_decomposition_count);
+
+ if(s->pass1_rc && plane_index==0){
+ int delta_qlog = ratecontrol_1pass(s, pic);
+ if (delta_qlog <= INT_MIN)
+ return -1;
+ if(delta_qlog){
+ //reordering qlog in the bitstream would eliminate this reset
+ ff_init_range_encoder(c, pkt->data, pkt->size);
+ memcpy(s->header_state, rc_header_bak, sizeof(s->header_state));
+ memcpy(s->block_state, rc_block_bak, sizeof(s->block_state));
+ encode_header(s);
+ encode_blocks(s, 0);
+ }
+ }
+
+ for(level=0; level<s->spatial_decomposition_count; level++){
+ for(orientation=level ? 1 : 0; orientation<4; orientation++){
+ SubBand *b= &p->band[level][orientation];
+
+ quantize(s, b, b->ibuf, b->buf, b->stride, s->qbias);
+ if(orientation==0)
+ decorrelate(s, b, b->ibuf, b->stride, pic->pict_type == AV_PICTURE_TYPE_P, 0);
+ if (!s->no_bitstream)
+ encode_subband(s, b, b->ibuf, b->parent ? b->parent->ibuf : NULL, b->stride, orientation);
+ av_assert0(b->parent==NULL || b->parent->stride == b->stride*2);
+ if(orientation==0)
+ correlate(s, b, b->ibuf, b->stride, 1, 0);
+ }
+ }
+
+ for(level=0; level<s->spatial_decomposition_count; level++){
+ for(orientation=level ? 1 : 0; orientation<4; orientation++){
+ SubBand *b= &p->band[level][orientation];
+
+ dequantize(s, b, b->ibuf, b->stride);
+ }
+ }
+
+ ff_spatial_idwt(s->spatial_idwt_buffer, s->temp_idwt_buffer, w, h, w, s->spatial_decomposition_type, s->spatial_decomposition_count);
+ if(s->qlog == LOSSLESS_QLOG){
+ for(y=0; y<h; y++){
+ for(x=0; x<w; x++){
+ s->spatial_idwt_buffer[y*w + x]<<=FRAC_BITS;
+ }
+ }
+ }
+ predict_plane(s, s->spatial_idwt_buffer, plane_index, 1);
+ }else{
+ //ME/MC only
+ if(pic->pict_type == AV_PICTURE_TYPE_I){
+ for(y=0; y<h; y++){
+ for(x=0; x<w; x++){
+ s->current_picture->data[plane_index][y*s->current_picture->linesize[plane_index] + x]=
+ pict->data[plane_index][y*pict->linesize[plane_index] + x];
+ }
+ }
+ }else{
+ memset(s->spatial_idwt_buffer, 0, sizeof(IDWTELEM)*w*h);
+ predict_plane(s, s->spatial_idwt_buffer, plane_index, 1);
+ }
+ }
+ if(s->avctx->flags&CODEC_FLAG_PSNR){
+ int64_t error= 0;
+
+ if(pict->data[plane_index]) //FIXME gray hack
+ for(y=0; y<h; y++){
+ for(x=0; x<w; x++){
+ int d= s->current_picture->data[plane_index][y*s->current_picture->linesize[plane_index] + x] - pict->data[plane_index][y*pict->linesize[plane_index] + x];
+ error += d*d;
+ }
+ }
+ s->avctx->error[plane_index] += error;
+ s->current_picture->error[plane_index] = error;
+ }
+
+ }
+
+ update_last_header_values(s);
+
+ ff_snow_release_buffer(avctx);
+
+ s->current_picture->coded_picture_number = avctx->frame_number;
+ s->current_picture->pict_type = pict->pict_type;
+ s->current_picture->quality = pict->quality;
+ s->m.frame_bits = 8*(s->c.bytestream - s->c.bytestream_start);
+ s->m.p_tex_bits = s->m.frame_bits - s->m.misc_bits - s->m.mv_bits;
+ s->m.current_picture.f->display_picture_number =
+ s->m.current_picture.f->coded_picture_number = avctx->frame_number;
+ s->m.current_picture.f->quality = pic->quality;
+ s->m.total_bits += 8*(s->c.bytestream - s->c.bytestream_start);
+ if(s->pass1_rc)
+ if (ff_rate_estimate_qscale(&s->m, 0) < 0)
+ return -1;
+ if(avctx->flags&CODEC_FLAG_PASS1)
+ ff_write_pass1_stats(&s->m);
+ s->m.last_pict_type = s->m.pict_type;
+ avctx->frame_bits = s->m.frame_bits;
+ avctx->mv_bits = s->m.mv_bits;
+ avctx->misc_bits = s->m.misc_bits;
+ avctx->p_tex_bits = s->m.p_tex_bits;
+
+ emms_c();
+
+ pkt->size = ff_rac_terminate(c);
+ if (avctx->coded_frame->key_frame)
+ pkt->flags |= AV_PKT_FLAG_KEY;
+ *got_packet = 1;
+
+ return 0;
+}
+
+static av_cold int encode_end(AVCodecContext *avctx)
+{
+ SnowContext *s = avctx->priv_data;
+
+ ff_snow_common_end(s);
+ ff_rate_control_uninit(&s->m);
+ av_frame_free(&s->input_picture);
+ av_frame_free(&avctx->coded_frame);
+ av_freep(&avctx->stats_out);
+
+ return 0;
+}
+
+#define OFFSET(x) offsetof(SnowContext, x)
+#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
+static const AVOption options[] = {
+ FF_MPV_COMMON_OPTS
+ { "memc_only", "Only do ME/MC (I frames -> ref, P frame -> ME+MC).", OFFSET(memc_only), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
+ { "no_bitstream", "Skip final bitstream writeout.", OFFSET(no_bitstream), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
+ { NULL },
+};
+
+static const AVClass snowenc_class = {
+ .class_name = "snow encoder",
+ .item_name = av_default_item_name,
+ .option = options,
+ .version = LIBAVUTIL_VERSION_INT,
+};
+
+AVCodec ff_snow_encoder = {
+ .name = "snow",
+ .long_name = NULL_IF_CONFIG_SMALL("Snow"),
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = AV_CODEC_ID_SNOW,
+ .priv_data_size = sizeof(SnowContext),
+ .init = encode_init,
+ .encode2 = encode_frame,
+ .close = encode_end,
+ .pix_fmts = (const enum AVPixelFormat[]){
+ AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV444P,
+ AV_PIX_FMT_GRAY8,
+ AV_PIX_FMT_NONE
+ },
+ .priv_class = &snowenc_class,
+ .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE |
+ FF_CODEC_CAP_INIT_CLEANUP,
+};
+
+
+#ifdef TEST
+#undef malloc
+#undef free
+#undef printf
+
+#include "libavutil/lfg.h"
+#include "libavutil/mathematics.h"
+
+int main(void){
+#define width 256
+#define height 256
+ int buffer[2][width*height];
+ SnowContext s;
+ int i;
+ AVLFG prng;
+ s.spatial_decomposition_count=6;
+ s.spatial_decomposition_type=1;
+
+ s.temp_dwt_buffer = av_mallocz_array(width, sizeof(DWTELEM));
+ s.temp_idwt_buffer = av_mallocz_array(width, sizeof(IDWTELEM));
+
+ if (!s.temp_dwt_buffer || !s.temp_idwt_buffer) {
+ fprintf(stderr, "Failed to allocate memory\n");
+ return 1;
+ }
+
+ av_lfg_init(&prng, 1);
+
+ printf("testing 5/3 DWT\n");
+ for(i=0; i<width*height; i++)
+ buffer[0][i] = buffer[1][i] = av_lfg_get(&prng) % 54321 - 12345;
+
+ ff_spatial_dwt(buffer[0], s.temp_dwt_buffer, width, height, width, s.spatial_decomposition_type, s.spatial_decomposition_count);
+ ff_spatial_idwt((IDWTELEM*)buffer[0], s.temp_idwt_buffer, width, height, width, s.spatial_decomposition_type, s.spatial_decomposition_count);
+
+ for(i=0; i<width*height; i++)
+ if(buffer[0][i]!= buffer[1][i]) printf("fsck: %6d %12d %7d\n",i, buffer[0][i], buffer[1][i]);
+
+ printf("testing 9/7 DWT\n");
+ s.spatial_decomposition_type=0;
+ for(i=0; i<width*height; i++)
+ buffer[0][i] = buffer[1][i] = av_lfg_get(&prng) % 54321 - 12345;
+
+ ff_spatial_dwt(buffer[0], s.temp_dwt_buffer, width, height, width, s.spatial_decomposition_type, s.spatial_decomposition_count);
+ ff_spatial_idwt((IDWTELEM*)buffer[0], s.temp_idwt_buffer, width, height, width, s.spatial_decomposition_type, s.spatial_decomposition_count);
+
+ for(i=0; i<width*height; i++)
+ if(FFABS(buffer[0][i] - buffer[1][i])>20) printf("fsck: %6d %12d %7d\n",i, buffer[0][i], buffer[1][i]);
+
+ {
+ int level, orientation, x, y;
+ int64_t errors[8][4];
+ int64_t g=0;
+
+ memset(errors, 0, sizeof(errors));
+ s.spatial_decomposition_count=3;
+ s.spatial_decomposition_type=0;
+ for(level=0; level<s.spatial_decomposition_count; level++){
+ for(orientation=level ? 1 : 0; orientation<4; orientation++){
+ int w= width >> (s.spatial_decomposition_count-level);
+ int h= height >> (s.spatial_decomposition_count-level);
+ int stride= width << (s.spatial_decomposition_count-level);
+ DWTELEM *buf= buffer[0];
+ int64_t error=0;
+
+ if(orientation&1) buf+=w;
+ if(orientation>1) buf+=stride>>1;
+
+ memset(buffer[0], 0, sizeof(int)*width*height);
+ buf[w/2 + h/2*stride]= 256*256;
+ ff_spatial_idwt((IDWTELEM*)buffer[0], s.temp_idwt_buffer, width, height, width, s.spatial_decomposition_type, s.spatial_decomposition_count);
+ for(y=0; y<height; y++){
+ for(x=0; x<width; x++){
+ int64_t d= buffer[0][x + y*width];
+ error += d*d;
+ if(FFABS(width/2-x)<9 && FFABS(height/2-y)<9 && level==2) printf("%8"PRId64" ", d);
+ }
+ if(FFABS(height/2-y)<9 && level==2) printf("\n");
+ }
+ error= (int)(sqrt(error)+0.5);
+ errors[level][orientation]= error;
+ if(g) g=av_gcd(g, error);
+ else g= error;
+ }
+ }
+ printf("static int const visual_weight[][4]={\n");
+ for(level=0; level<s.spatial_decomposition_count; level++){
+ printf(" {");
+ for(orientation=0; orientation<4; orientation++){
+ printf("%8"PRId64",", errors[level][orientation]/g);
+ }
+ printf("},\n");
+ }
+ printf("};\n");
+ {
+ int level=2;
+ int w= width >> (s.spatial_decomposition_count-level);
+ //int h= height >> (s.spatial_decomposition_count-level);
+ int stride= width << (s.spatial_decomposition_count-level);
+ DWTELEM *buf= buffer[0];
+ int64_t error=0;
+
+ buf+=w;
+ buf+=stride>>1;
+
+ memset(buffer[0], 0, sizeof(int)*width*height);
+ for(y=0; y<height; y++){
+ for(x=0; x<width; x++){
+ int tab[4]={0,2,3,1};
+ buffer[0][x+width*y]= 256*256*tab[(x&1) + 2*(y&1)];
+ }
+ }
+ ff_spatial_dwt(buffer[0], s.temp_dwt_buffer, width, height, width, s.spatial_decomposition_type, s.spatial_decomposition_count);
+ for(y=0; y<height; y++){
+ for(x=0; x<width; x++){
+ int64_t d= buffer[0][x + y*width];
+ error += d*d;
+ if(FFABS(width/2-x)<9 && FFABS(height/2-y)<9) printf("%8"PRId64" ", d);
+ }
+ if(FFABS(height/2-y)<9) printf("\n");
+ }
+ }
+
+ }
+ return 0;
+}
+#endif /* TEST */
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