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| author | Michael Niedermayer <michaelni@gmx.at> | 2004-06-30 14:15:31 +0000 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2004-06-30 14:15:31 +0000 |
| commit | b9d2085ba14aa733503ff02d966204992f46ff00 (patch) | |
| tree | 81e862130f7a1dd0ddb4b17231d405937f3af62e /libavcodec/resample2.c | |
| parent | 2d48edddf7b1f47bd9a8b807060170c6246b877c (diff) | |
| download | ffmpeg-b9d2085ba14aa733503ff02d966204992f46ff00.tar.gz | |
various resampling fixes
Originally committed as revision 3271 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/resample2.c')
| -rw-r--r-- | libavcodec/resample2.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/libavcodec/resample2.c b/libavcodec/resample2.c index e4115118a2..47eeb0a2d8 100644 --- a/libavcodec/resample2.c +++ b/libavcodec/resample2.c @@ -123,8 +123,8 @@ AVResampleContext *av_resample_init(int out_rate, int in_rate){ c->filter_length= ceil(16.0/factor); c->filter_bank= av_mallocz(c->filter_length*(PHASE_COUNT+1)*sizeof(short)); av_build_filter(c->filter_bank, factor, c->filter_length, PHASE_COUNT, 1<<FILTER_SHIFT, 1); - c->filter_bank[c->filter_length*PHASE_COUNT + (c->filter_length-1) + 1]= (1<<FILTER_SHIFT)-1; - c->filter_bank[c->filter_length*PHASE_COUNT + (c->filter_length-1) + 2]= 1; + c->filter_bank[c->filter_length*PHASE_COUNT + (c->filter_length-1)/2 + 1]= (1<<FILTER_SHIFT)-1; + c->filter_bank[c->filter_length*PHASE_COUNT + (c->filter_length-1)/2 + 2]= 1; c->src_incr= out_rate; c->ideal_dst_incr= c->dst_incr= in_rate * PHASE_COUNT; @@ -170,7 +170,7 @@ int av_resample(AVResampleContext *c, short *dst, short *src, int *consumed, int if(sample_index < 0){ for(i=0; i<c->filter_length; i++) - val += src[ABS(sample_index + i)] * filter[i]; + val += src[ABS(sample_index + i) % src_size] * filter[i]; }else if(sample_index + c->filter_length > src_size){ break; }else{ @@ -199,6 +199,9 @@ int av_resample(AVResampleContext *c, short *dst, short *src, int *consumed, int index++; } } + *consumed= FFMAX(index, 0) >> PHASE_SHIFT; + index= FFMIN(index, 0); + if(update_ctx){ if(c->compensation_distance){ c->compensation_distance -= dst_index; @@ -206,9 +209,8 @@ int av_resample(AVResampleContext *c, short *dst, short *src, int *consumed, int c->dst_incr= c->ideal_dst_incr; } c->frac= frac; - c->index=0; + c->index= index; } - *consumed= index >> PHASE_SHIFT; #if 0 if(update_ctx && !c->compensation_distance){ #undef rand |