diff options
author | Clément Bœsch <ubitux@gmail.com> | 2011-11-17 18:09:52 +0400 |
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committer | Clément Bœsch <ubitux@gmail.com> | 2011-11-17 21:30:03 +0400 |
commit | 0bfc03df3a52e5b256b6a7d9acedf3f21f572a1a (patch) | |
tree | 1ee8db3eb411cd55ebfc9bfb244ab4bfa1994ea5 /libswresample | |
parent | eafa2b600502f5e8b36b99a2737d6b3d3a58441f (diff) |
swr: move code to avoid resample forward declaration.
Diffstat (limited to 'libswresample')
-rw-r--r-- | libswresample/swresample.c | 184 |
1 files changed, 91 insertions, 93 deletions
diff --git a/libswresample/swresample.c b/libswresample/swresample.c index b0a00414bd..83b446e3f9 100644 --- a/libswresample/swresample.c +++ b/libswresample/swresample.c @@ -70,9 +70,6 @@ static const AVClass av_class = { .parent_log_context_offset = OFFSET(log_ctx), }; -static int resample(SwrContext *s, AudioData *out_param, int out_count, - const AudioData * in_param, int in_count); - int swr_set_channel_mapping(struct SwrContext *s, const int *channel_map){ if(!s || s->in_convert) // s needs to be allocated but not initialized return AVERROR(EINVAL); @@ -302,6 +299,97 @@ static void fill_audiodata(AudioData *out, uint8_t *in_arg [SWR_CH_MAX]){ } } +/** + * + * out may be equal in. + */ +static void buf_set(AudioData *out, AudioData *in, int count){ + if(in->planar){ + int ch; + for(ch=0; ch<out->ch_count; ch++) + out->ch[ch]= in->ch[ch] + count*out->bps; + }else + out->ch[0]= in->ch[0] + count*out->ch_count*out->bps; +} + +/** + * + * @return number of samples output per channel + */ +static int resample(SwrContext *s, AudioData *out_param, int out_count, + const AudioData * in_param, int in_count){ + AudioData in, out, tmp; + int ret_sum=0; + int border=0; + + tmp=out=*out_param; + in = *in_param; + + do{ + int ret, size, consumed; + if(!s->resample_in_constraint && s->in_buffer_count){ + buf_set(&tmp, &s->in_buffer, s->in_buffer_index); + ret= swri_multiple_resample(s->resample, &out, out_count, &tmp, s->in_buffer_count, &consumed); + out_count -= ret; + ret_sum += ret; + buf_set(&out, &out, ret); + s->in_buffer_count -= consumed; + s->in_buffer_index += consumed; + + if(!in_count) + break; + if(s->in_buffer_count <= border){ + buf_set(&in, &in, -s->in_buffer_count); + in_count += s->in_buffer_count; + s->in_buffer_count=0; + s->in_buffer_index=0; + border = 0; + } + } + + if(in_count && !s->in_buffer_count){ + s->in_buffer_index=0; + ret= swri_multiple_resample(s->resample, &out, out_count, &in, in_count, &consumed); + out_count -= ret; + ret_sum += ret; + buf_set(&out, &out, ret); + in_count -= consumed; + buf_set(&in, &in, consumed); + } + + //TODO is this check sane considering the advanced copy avoidance below + size= s->in_buffer_index + s->in_buffer_count + in_count; + if( size > s->in_buffer.count + && s->in_buffer_count + in_count <= s->in_buffer_index){ + buf_set(&tmp, &s->in_buffer, s->in_buffer_index); + copy(&s->in_buffer, &tmp, s->in_buffer_count); + s->in_buffer_index=0; + }else + if((ret=realloc_audio(&s->in_buffer, size)) < 0) + return ret; + + if(in_count){ + int count= in_count; + if(s->in_buffer_count && s->in_buffer_count+2 < count && out_count) count= s->in_buffer_count+2; + + buf_set(&tmp, &s->in_buffer, s->in_buffer_index + s->in_buffer_count); + copy(&tmp, &in, /*in_*/count); + s->in_buffer_count += count; + in_count -= count; + border += count; + buf_set(&in, &in, count); + s->resample_in_constraint= 0; + if(s->in_buffer_count != count || in_count) + continue; + } + break; + }while(1); + + s->resample_in_constraint= !!out_count; + + return ret_sum; +} + int swr_convert(struct SwrContext *s, uint8_t *out_arg[SWR_CH_MAX], int out_count, const uint8_t *in_arg [SWR_CH_MAX], int in_count){ AudioData *postin, *midbuf, *preout; @@ -414,93 +502,3 @@ int swr_convert(struct SwrContext *s, uint8_t *out_arg[SWR_CH_MAX], int out_coun return out_count; } -/** - * - * out may be equal in. - */ -static void buf_set(AudioData *out, AudioData *in, int count){ - if(in->planar){ - int ch; - for(ch=0; ch<out->ch_count; ch++) - out->ch[ch]= in->ch[ch] + count*out->bps; - }else - out->ch[0]= in->ch[0] + count*out->ch_count*out->bps; -} - -/** - * - * @return number of samples output per channel - */ -static int resample(SwrContext *s, AudioData *out_param, int out_count, - const AudioData * in_param, int in_count){ - AudioData in, out, tmp; - int ret_sum=0; - int border=0; - - tmp=out=*out_param; - in = *in_param; - - do{ - int ret, size, consumed; - if(!s->resample_in_constraint && s->in_buffer_count){ - buf_set(&tmp, &s->in_buffer, s->in_buffer_index); - ret= swri_multiple_resample(s->resample, &out, out_count, &tmp, s->in_buffer_count, &consumed); - out_count -= ret; - ret_sum += ret; - buf_set(&out, &out, ret); - s->in_buffer_count -= consumed; - s->in_buffer_index += consumed; - - if(!in_count) - break; - if(s->in_buffer_count <= border){ - buf_set(&in, &in, -s->in_buffer_count); - in_count += s->in_buffer_count; - s->in_buffer_count=0; - s->in_buffer_index=0; - border = 0; - } - } - - if(in_count && !s->in_buffer_count){ - s->in_buffer_index=0; - ret= swri_multiple_resample(s->resample, &out, out_count, &in, in_count, &consumed); - out_count -= ret; - ret_sum += ret; - buf_set(&out, &out, ret); - in_count -= consumed; - buf_set(&in, &in, consumed); - } - - //TODO is this check sane considering the advanced copy avoidance below - size= s->in_buffer_index + s->in_buffer_count + in_count; - if( size > s->in_buffer.count - && s->in_buffer_count + in_count <= s->in_buffer_index){ - buf_set(&tmp, &s->in_buffer, s->in_buffer_index); - copy(&s->in_buffer, &tmp, s->in_buffer_count); - s->in_buffer_index=0; - }else - if((ret=realloc_audio(&s->in_buffer, size)) < 0) - return ret; - - if(in_count){ - int count= in_count; - if(s->in_buffer_count && s->in_buffer_count+2 < count && out_count) count= s->in_buffer_count+2; - - buf_set(&tmp, &s->in_buffer, s->in_buffer_index + s->in_buffer_count); - copy(&tmp, &in, /*in_*/count); - s->in_buffer_count += count; - in_count -= count; - border += count; - buf_set(&in, &in, count); - s->resample_in_constraint= 0; - if(s->in_buffer_count != count || in_count) - continue; - } - break; - }while(1); - - s->resample_in_constraint= !!out_count; - - return ret_sum; -} |