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fix assertion failure

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Originally committed as revision 9152 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2007-05-29 16:51:55 +00:00
parent 3dba31aa0d
commit 1e6b570087
2 changed files with 11 additions and 9 deletions
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7
libavcodec/rangecoder.h
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@ -66,6 +66,13 @@ static inline void renorm_encoder(RangeCoder *c){
}
}
static inline int get_rac_count(RangeCoder *c){
int x= c->bytestream - c->bytestream_start + c->outstanding_count;
if(c->outstanding_byte >= 0)
x++;
return 8*x - av_log2(c->range);
}
static inline void put_rac(RangeCoder *c, uint8_t * const state, int bit){
int range1= (c->range * (*state)) >> 8;

13
libavcodec/snow.c
View File

@ -1989,7 +1989,7 @@ static int encode_q_branch(SnowContext *s, int level, int x, int y){
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;
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;
@ -2115,6 +2115,7 @@ static int encode_q_branch(SnowContext *s, int level, int x, int y){
//FIXME if mb_cmp != SSE then intra cant be compared currently and mb_penalty vs. lambda2
// subpel search
base_bits= get_rac_count(&s->c) - (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
@ -2129,10 +2130,7 @@ static int encode_q_branch(SnowContext *s, int level, int x, int y){
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*(p_len*8
+ (pc.outstanding_count - s->c.outstanding_count)*8
+ (-av_log2(pc.range) + av_log2(s->c.range))
))>>FF_LAMBDA_SHIFT;
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);
@ -2158,10 +2156,7 @@ static int encode_q_branch(SnowContext *s, int level, int x, int y){
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*(i_len*8
+ (ic.outstanding_count - s->c.outstanding_count)*8
+ (-av_log2(ic.range) + av_log2(s->c.range))
))>>FF_LAMBDA_SHIFT;
iscore += (s->lambda2*(get_rac_count(&ic)-base_bits))>>FF_LAMBDA_SHIFT;
// assert(score==256*256*256*64-1);
assert(iscore < 255*255*256 + s->lambda2*10);