diff options
author | Muhammad Faiz <mfcc64@gmail.com> | 2016-12-14 00:51:18 +0700 |
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committer | Muhammad Faiz <mfcc64@gmail.com> | 2016-12-14 06:48:34 +0700 |
commit | 2b0112d42d4dfc8976be20b4d9729c0e077146c6 (patch) | |
tree | 104d81ca678b6dc38940657760472d3d2f021274 /libswresample/resample.c | |
parent | bf15981b126256c403a1529df5172dce761295d4 (diff) | |
download | ffmpeg-2b0112d42d4dfc8976be20b4d9729c0e077146c6.tar.gz |
swresample/resample: remove swri_resample function
integrate it inside multiple_resample
allow some calculations to be performed outside loop
Suggested-by: Michael Niedermayer <michael@niedermayer.cc>
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Muhammad Faiz <mfcc64@gmail.com>
Diffstat (limited to 'libswresample/resample.c')
-rw-r--r-- | libswresample/resample.c | 79 |
1 files changed, 35 insertions, 44 deletions
diff --git a/libswresample/resample.c b/libswresample/resample.c index ce6a82f132..8e2f76901a 100644 --- a/libswresample/resample.c +++ b/libswresample/resample.c @@ -467,70 +467,61 @@ static int set_compensation(ResampleContext *c, int sample_delta, int compensati return 0; } -static int swri_resample(ResampleContext *c, - uint8_t *dst, const uint8_t *src, int *consumed, - int src_size, int dst_size, int update_ctx) -{ +static int multiple_resample(ResampleContext *c, AudioData *dst, int dst_size, AudioData *src, int src_size, int *consumed){ + int i; + int av_unused mm_flags = av_get_cpu_flags(); + int need_emms = c->format == AV_SAMPLE_FMT_S16P && ARCH_X86_32 && + (mm_flags & (AV_CPU_FLAG_MMX2 | AV_CPU_FLAG_SSE2)) == AV_CPU_FLAG_MMX2; + int64_t max_src_size = (INT64_MAX/2 / c->phase_count) / c->src_incr; + + if (c->compensation_distance) + dst_size = FFMIN(dst_size, c->compensation_distance); + src_size = FFMIN(src_size, max_src_size); + + *consumed = 0; + if (c->filter_length == 1 && c->phase_count == 1) { - int index= c->index; - int frac= c->frac; - int64_t index2= (1LL<<32)*c->frac/c->src_incr + (1LL<<32)*index; + int64_t index2= (1LL<<32)*c->frac/c->src_incr + (1LL<<32)*c->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; + int new_size = (src_size * (int64_t)c->src_incr - c->frac + c->dst_incr - 1) / c->dst_incr; dst_size = FFMAX(FFMIN(dst_size, new_size), 0); - if (dst_size > 0) - c->dsp.resample_one(dst, src, dst_size, index2, incr); - - index += dst_size * c->dst_incr_div; - index += (frac + dst_size * (int64_t)c->dst_incr_mod) / c->src_incr; - av_assert2(index >= 0); - *consumed= index; - if (update_ctx) { - c->frac = (frac + dst_size * (int64_t)c->dst_incr_mod) % c->src_incr; - c->index = 0; + if (dst_size > 0) { + for (i = 0; i < dst->ch_count; i++) { + c->dsp.resample_one(dst->ch[i], src->ch[i], dst_size, index2, incr); + if (i+1 == dst->ch_count) { + c->index += dst_size * c->dst_incr_div; + c->index += (c->frac + dst_size * (int64_t)c->dst_incr_mod) / c->src_incr; + av_assert2(c->index >= 0); + *consumed = c->index; + c->frac = (c->frac + dst_size * (int64_t)c->dst_incr_mod) % c->src_incr; + c->index = 0; + } + } } } else { int64_t end_index = (1LL + src_size - c->filter_length) * c->phase_count; int64_t delta_frac = (end_index - c->index) * c->src_incr - c->frac; int delta_n = (delta_frac + c->dst_incr - 1) / c->dst_incr; + int (*resample_func)(struct ResampleContext *c, void *dst, + const void *src, int n, int update_ctx); dst_size = FFMAX(FFMIN(dst_size, delta_n), 0); if (dst_size > 0) { /* resample_linear and resample_common should have same behavior * when frac and dst_incr_mod are zero */ - if (c->linear && (c->frac || c->dst_incr_mod)) - *consumed = c->dsp.resample_linear(c, dst, src, dst_size, update_ctx); - else - *consumed = c->dsp.resample_common(c, dst, src, dst_size, update_ctx); - } else { - *consumed = 0; + resample_func = (c->linear && (c->frac || c->dst_incr_mod)) ? + c->dsp.resample_linear : c->dsp.resample_common; + for (i = 0; i < dst->ch_count; i++) + *consumed = resample_func(c, dst->ch[i], src->ch[i], dst_size, i+1 == dst->ch_count); } } - return dst_size; -} - -static int multiple_resample(ResampleContext *c, AudioData *dst, int dst_size, AudioData *src, int src_size, int *consumed){ - int i, ret= -1; - int av_unused mm_flags = av_get_cpu_flags(); - int need_emms = c->format == AV_SAMPLE_FMT_S16P && ARCH_X86_32 && - (mm_flags & (AV_CPU_FLAG_MMX2 | AV_CPU_FLAG_SSE2)) == AV_CPU_FLAG_MMX2; - int64_t max_src_size = (INT64_MAX/2 / c->phase_count) / c->src_incr; - - if (c->compensation_distance) - dst_size = FFMIN(dst_size, c->compensation_distance); - src_size = FFMIN(src_size, max_src_size); - - for(i=0; i<dst->ch_count; i++){ - ret= swri_resample(c, dst->ch[i], src->ch[i], - consumed, src_size, dst_size, i+1==dst->ch_count); - } if(need_emms) emms_c(); if (c->compensation_distance) { - c->compensation_distance -= ret; + c->compensation_distance -= dst_size; if (!c->compensation_distance) { c->dst_incr = c->ideal_dst_incr; c->dst_incr_div = c->dst_incr / c->src_incr; @@ -538,7 +529,7 @@ static int multiple_resample(ResampleContext *c, AudioData *dst, int dst_size, A } } - return ret; + return dst_size; } static int64_t get_delay(struct SwrContext *s, int64_t base){ |