diff --git a/libswresample/resample.c b/libswresample/resample.c index 0fef28373b..a657a0394e 100644 --- a/libswresample/resample.c +++ b/libswresample/resample.c @@ -336,6 +336,9 @@ static int multiple_resample(ResampleContext *c, AudioData *dst, int dst_size, A int av_unused mm_flags = av_get_cpu_flags(); int need_emms= 0; + if (c->compensation_distance) + dst_size = FFMIN(dst_size, c->compensation_distance); + for(i=0; ich_count; i++){ #if HAVE_MMXEXT_INLINE #if HAVE_SSE2_INLINE @@ -366,6 +369,13 @@ static int multiple_resample(ResampleContext *c, AudioData *dst, int dst_size, A } if(need_emms) emms_c(); + + if (c->compensation_distance) { + c->compensation_distance -= ret; + if (!c->compensation_distance) + c->dst_incr = c->ideal_dst_incr / c->src_incr; + } + return ret; } diff --git a/libswresample/resample_template.c b/libswresample/resample_template.c index bb36e65c17..5151f585fc 100644 --- a/libswresample/resample_template.c +++ b/libswresample/resample_template.c @@ -112,12 +112,11 @@ int RENAME(swri_resample)(ResampleContext *c, DELEM *dst, const DELEM *src, int int frac= c->frac; int dst_incr_frac= c->dst_incr % c->src_incr; int dst_incr= c->dst_incr / c->src_incr; - int compensation_distance= c->compensation_distance; av_assert1(c->filter_shift == FILTER_SHIFT); av_assert1(c->felem_size == sizeof(FELEM)); - if(compensation_distance == 0 && c->filter_length == 1 && c->phase_shift==0){ + if (c->filter_length == 1 && c->phase_shift == 0) { int64_t index2= (1LL<<32)*c->frac/c->src_incr + (1LL<<32)*index; int64_t incr= (1LL<<32) * c->dst_incr / c->src_incr; int new_size = (src_size * (int64_t)c->src_incr - frac + c->dst_incr - 1) / c->dst_incr; @@ -134,8 +133,7 @@ int RENAME(swri_resample)(ResampleContext *c, DELEM *dst, const DELEM *src, int av_assert2(index >= 0); *consumed= index; index = 0; - } else if (compensation_distance == 0 && - index >= 0 && + } else if (index >= 0 && src_size*(int64_t)c->src_incr < (INT64_MAX >> (c->phase_shift+1))) { int64_t end_index = (1LL + src_size - c->filter_length) << c->phase_shift; int64_t delta_frac = (end_index - index) * c->src_incr - c->frac; @@ -243,27 +241,15 @@ int RENAME(swri_resample)(ResampleContext *c, DELEM *dst, const DELEM *src, int frac -= c->src_incr; index++; } - - if(dst_index + 1 == compensation_distance){ - compensation_distance= 0; - dst_incr_frac= c->ideal_dst_incr % c->src_incr; - dst_incr= c->ideal_dst_incr / c->src_incr; - } } *consumed= FFMAX(sample_index, 0); index += FFMIN(sample_index, 0) << c->phase_shift; - - if(compensation_distance){ - compensation_distance -= dst_index; - av_assert1(compensation_distance > 0); - } } if(update_ctx){ c->frac= frac; c->index= index; c->dst_incr= dst_incr_frac + c->src_incr*dst_incr; - c->compensation_distance= compensation_distance; } return dst_index;