[FFmpeg-cvslog] swr: move code to avoid resample forward declaration.
Clément Bœsch
git at videolan.org
Thu Nov 17 18:32:02 CET 2011
ffmpeg | branch: master | Clément Bœsch <ubitux at gmail.com> | Thu Nov 17 15:09:52 2011 +0100| [0bfc03df3a52e5b256b6a7d9acedf3f21f572a1a] | committer: Clément Bœsch
swr: move code to avoid resample forward declaration.
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=0bfc03df3a52e5b256b6a7d9acedf3f21f572a1a
---
libswresample/swresample.c | 184 ++++++++++++++++++++++----------------------
1 files changed, 91 insertions(+), 93 deletions(-)
diff --git a/libswresample/swresample.c b/libswresample/swresample.c
index b0a0041..83b446e 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;
-}
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