static IDWTELEM * slice_buffer_load_line(slice_buffer * buf, int line)
{
- int offset;
IDWTELEM * buffer;
assert(buf->data_stack_top >= 0);
if (buf->line[line])
return buf->line[line];
- offset = buf->line_width * line;
buffer = buf->data_stack[buf->data_stack_top];
buf->data_stack_top--;
buf->line[line] = buffer;
static void slice_buffer_release(slice_buffer * buf, int line)
{
- int offset;
IDWTELEM * buffer;
assert(line >= 0 && line < buf->line_count);
assert(buf->line[line]);
- offset = buf->line_width * line;
buffer = buf->line[line];
buf->data_stack_top++;
buf->data_stack[buf->data_stack_top] = buffer;
for(i=0; i<e; i++){
put_rac(c, state+1+FFMIN(i,9), 1); //1..10
}
- put_rac(c, state+1+FFMIN(i,9), 0);
+ put_rac(c, state+1+9, 0);
for(i=e-1; i>=0; i--){
put_rac(c, state+22+FFMIN(i,9), (a>>i)&1); //22..31
}
if(is_signed)
- put_rac(c, state+11 + FFMIN(e,10), v < 0); //11..21
+ put_rac(c, state+11 + 10, v < 0); //11..21
}
#endif /* 1 */
}else{
a += a + get_rac(c, state+22 + FFMIN(i,9)); //22..31
}
- if(is_signed && get_rac(c, state+11 + FFMIN(e,10))) //11..21
- return -a;
- else
- return a;
+ e= -(is_signed && get_rac(c, state+11 + FFMIN(e,10))); //11..21
+ return (a^e)-e;
}
}
if(y+0<(unsigned)height) vertical_compose97iH0(b0, b1, b2, width);
}
- if(y-1<(unsigned)height) dsp->horizontal_compose97i(b0, width);
- if(y+0<(unsigned)height) dsp->horizontal_compose97i(b1, width);
+ if(y-1<(unsigned)height) dsp->horizontal_compose97i(b0, width);
+ if(y+0<(unsigned)height) dsp->horizontal_compose97i(b1, width);
cs->b0=b2;
cs->b1=b3;
IDWTELEM *b4= buffer + mirror(y+3, height-1)*stride;
IDWTELEM *b5= buffer + mirror(y+4, height-1)*stride;
- if(y+3<(unsigned)height) vertical_compose97iL1(b3, b4, b5, width);
- if(y+2<(unsigned)height) vertical_compose97iH1(b2, b3, b4, width);
- if(y+1<(unsigned)height) vertical_compose97iL0(b1, b2, b3, width);
- if(y+0<(unsigned)height) vertical_compose97iH0(b0, b1, b2, width);
+ if(y+3<(unsigned)height) vertical_compose97iL1(b3, b4, b5, width);
+ if(y+2<(unsigned)height) vertical_compose97iH1(b2, b3, b4, width);
+ if(y+1<(unsigned)height) vertical_compose97iL0(b1, b2, b3, width);
+ if(y+0<(unsigned)height) vertical_compose97iH0(b0, b1, b2, width);
- if(y-1<(unsigned)height) ff_snow_horizontal_compose97i(b0, width);
- if(y+0<(unsigned)height) ff_snow_horizontal_compose97i(b1, width);
+ if(y-1<(unsigned)height) ff_snow_horizontal_compose97i(b0, width);
+ if(y+0<(unsigned)height) ff_snow_horizontal_compose97i(b1, width);
cs->b0=b2;
cs->b1=b3;
s->b_width = w;
s->b_height= h;
+ av_free(s->block);
s->block= av_mallocz(w * h * sizeof(BlockNode) << (s->block_max_depth*2));
return 0;
}
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+2;
- c->ymin = - y*block_w - 16+2;
- c->xmax = - (x+1)*block_w + (w<<(LOG2_MB_SIZE - s->block_max_depth)) + 16-2;
- c->ymax = - (y+1)*block_w + (h<<(LOG2_MB_SIZE - s->block_max_depth)) + 16-2;
+ 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);
}
}
+#define GET_S(dst, check) \
+ tmp= get_symbol(&s->c, s->header_state, 0);\
+ if(!(check)){\
+ av_log(s->avctx, AV_LOG_ERROR, "Error " #dst " is %d\n", tmp);\
+ return -1;\
+ }\
+ dst= tmp;
+
static int decode_header(SnowContext *s){
- int plane_index;
+ int plane_index, tmp;
uint8_t kstate[32];
memset(kstate, MID_STATE, sizeof(kstate));
s->block_max_depth= 0;
}
if(s->keyframe){
- s->version= get_symbol(&s->c, s->header_state, 0);
- if(s->version>0){
- av_log(s->avctx, AV_LOG_ERROR, "version %d not supported", s->version);
- return -1;
- }
+ GET_S(s->version, tmp <= 0U)
s->always_reset= get_rac(&s->c, s->header_state);
s->temporal_decomposition_type= get_symbol(&s->c, s->header_state, 0);
s->temporal_decomposition_count= get_symbol(&s->c, s->header_state, 0);
- s->spatial_decomposition_count= get_symbol(&s->c, s->header_state, 0);
+ GET_S(s->spatial_decomposition_count, 0 < tmp && tmp <= MAX_DECOMPOSITIONS)
s->colorspace_type= get_symbol(&s->c, s->header_state, 0);
s->chroma_h_shift= get_symbol(&s->c, s->header_state, 0);
s->chroma_v_shift= get_symbol(&s->c, s->header_state, 0);
s->spatial_scalability= get_rac(&s->c, s->header_state);
// s->rate_scalability= get_rac(&s->c, s->header_state);
- s->max_ref_frames= get_symbol(&s->c, s->header_state, 0)+1;
+ GET_S(s->max_ref_frames, tmp < (unsigned)MAX_REF_FRAMES)
+ s->max_ref_frames++;
decode_qlogs(s);
}
memcpy(s->plane[2].hcoeff, s->plane[1].hcoeff, sizeof(s->plane[1].hcoeff));
}
if(get_rac(&s->c, s->header_state)){
- s->spatial_decomposition_count= get_symbol(&s->c, s->header_state, 0);
+ GET_S(s->spatial_decomposition_count, 0 < tmp && tmp <= MAX_DECOMPOSITIONS)
decode_qlogs(s);
}
}
s->spatial_decomposition_type+= get_symbol(&s->c, s->header_state, 1);
- if(s->spatial_decomposition_type > 1){
+ if(s->spatial_decomposition_type > 1U){
av_log(s->avctx, AV_LOG_ERROR, "spatial_decomposition_type %d not supported", s->spatial_decomposition_type);
return -1;
}
+ if(FFMIN(s->avctx-> width>>s->chroma_h_shift,
+ s->avctx->height>>s->chroma_v_shift) >> (s->spatial_decomposition_count-1) <= 0){
+ av_log(s->avctx, AV_LOG_ERROR, "spatial_decomposition_count %d too large for size", s->spatial_decomposition_count);
+ return -1;
+ }
s->qlog += get_symbol(&s->c, s->header_state, 1);
s->mv_scale += get_symbol(&s->c, s->header_state, 1);
int i, j;
s->avctx= avctx;
+ s->max_ref_frames=1; //just make sure its not an invalid value in case of no initial keyframe
dsputil_init(&s->dsp, avctx);
s->spatial_decomposition_type= avctx->prediction_method; //FIXME add decorrelator type r transform_type
- s->chroma_h_shift= 1; //FIXME XXX
- s->chroma_v_shift= 1;
-
s->mv_scale = (avctx->flags & CODEC_FLAG_QPEL) ? 2 : 4;
s->block_max_depth= (avctx->flags & CODEC_FLAG_4MV ) ? 1 : 0;
}
}
+static void release_buffer(AVCodecContext *avctx){
+ SnowContext *s = avctx->priv_data;
+ int i;
+
+ if(s->last_picture[s->max_ref_frames-1].data[0]){
+ avctx->release_buffer(avctx, &s->last_picture[s->max_ref_frames-1]);
+ for(i=0; i<9; i++)
+ if(s->halfpel_plane[s->max_ref_frames-1][1+i/3][i%3])
+ av_free(s->halfpel_plane[s->max_ref_frames-1][1+i/3][i%3] - EDGE_WIDTH*(1+s->current_picture.linesize[i%3]));
+ }
+}
+
static int frame_start(SnowContext *s){
AVFrame tmp;
int w= s->avctx->width; //FIXME round up to x16 ?
s->dsp.draw_edges(s->current_picture.data[2], s->current_picture.linesize[2], w>>1, h>>1, EDGE_WIDTH/2);
}
+ release_buffer(s->avctx);
+
tmp= s->last_picture[s->max_ref_frames-1];
memmove(s->last_picture+1, s->last_picture, (s->max_ref_frames-1)*sizeof(AVFrame));
memmove(s->halfpel_plane+1, s->halfpel_plane, (s->max_ref_frames-1)*sizeof(void*)*4*4);
if(i && s->last_picture[i-1].key_frame)
break;
s->ref_frames= i;
+ if(s->ref_frames==0){
+ av_log(s->avctx,AV_LOG_ERROR, "No reference frames\n");
+ return -1;
+ }
}
s->current_picture.reference= 1;
update_last_header_values(s);
- if(s->last_picture[s->max_ref_frames-1].data[0]){
- avctx->release_buffer(avctx, &s->last_picture[s->max_ref_frames-1]);
- for(i=0; i<9; i++)
- if(s->halfpel_plane[s->max_ref_frames-1][1+i/3][i%3])
- av_free(s->halfpel_plane[s->max_ref_frames-1][1+i/3][i%3] - EDGE_WIDTH*(1+s->current_picture.linesize[i%3]));
- }
+ release_buffer(avctx);
s->current_picture.coded_picture_number = avctx->frame_number;
s->current_picture.pict_type = pict->pict_type;
RangeCoder * const c= &s->c;
int bytes_read;
AVFrame *picture = data;
- int level, orientation, plane_index, i;
+ int level, orientation, plane_index;
ff_init_range_decoder(c, buf, buf_size);
ff_build_rac_states(c, 0.05*(1LL<<32), 256-8);
&& p->hcoeff[2]==2;
}
- if(!s->block) alloc_blocks(s);
+ alloc_blocks(s);
- frame_start(s);
+ if(frame_start(s) < 0)
+ return -1;
//keyframe flag duplication mess FIXME
if(avctx->debug&FF_DEBUG_PICT_INFO)
av_log(avctx, AV_LOG_ERROR, "keyframe:%d qlog:%d\n", s->keyframe, s->qlog);
emms_c();
- if(s->last_picture[s->max_ref_frames-1].data[0]){
- avctx->release_buffer(avctx, &s->last_picture[s->max_ref_frames-1]);
- for(i=0; i<9; i++)
- if(s->halfpel_plane[s->max_ref_frames-1][1+i/3][i%3])
- av_free(s->halfpel_plane[s->max_ref_frames-1][1+i/3][i%3] - EDGE_WIDTH*(1+s->current_picture.linesize[i%3]));
- }
+ release_buffer(avctx);
if(!(s->avctx->debug&2048))
*picture= s->current_picture;
int buffer[2][width*height];
SnowContext s;
int i;
- AVLFG prn;
+ AVLFG prng;
s.spatial_decomposition_count=6;
s.spatial_decomposition_type=1;
- av_lfg_init(&prn, 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(&prn) % 54321 - 12345;
+ buffer[0][i] = buffer[1][i] = av_lfg_get(&prng) % 54321 - 12345;
ff_spatial_dwt(buffer[0], width, height, width, s.spatial_decomposition_type, s.spatial_decomposition_count);
ff_spatial_idwt(buffer[0], width, height, width, s.spatial_decomposition_type, s.spatial_decomposition_count);
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(&prn) % 54321 - 12345;
+ buffer[0][i] = buffer[1][i] = av_lfg_get(&prng) % 54321 - 12345;
ff_spatial_dwt(buffer[0], width, height, width, s.spatial_decomposition_type, s.spatial_decomposition_count);
ff_spatial_idwt(buffer[0], width, height, width, s.spatial_decomposition_type, s.spatial_decomposition_count);
projects / frescor / ffmpeg.git / blobdiff