Commit ddabec73 authored by malc's avatar malc

audio: introduce audio_pcm_hw_clip_out helper function

Signed-off-by: default avatarmalc <>
parent 4f4cc0ef
......@@ -851,6 +851,28 @@ int audio_pcm_hw_get_live_in (HWVoiceIn *hw)
return live;
int audio_pcm_hw_clip_out (HWVoiceOut *hw, void *pcm_buf,
int live, int pending)
int left = hw->samples - pending;
int len = audio_MIN (left, live);
int clipped = 0;
while (len) {
struct st_sample *src = hw->mix_buf + hw->rpos;
uint8_t *dst = advance (pcm_buf, hw->rpos << hw->info.shift);
int samples_till_end_of_buf = hw->samples - hw->rpos;
int samples_to_clip = audio_MIN (len, samples_till_end_of_buf);
hw->clip (dst, src, samples_to_clip);
hw->rpos = (hw->rpos + samples_to_clip) % hw->samples;
len -= samples_to_clip;
clipped += samples_to_clip;
return clipped;
* Soft voice (capture)
......@@ -221,6 +221,9 @@ int audio_pcm_sw_read (SWVoiceIn *sw, void *buf, int len);
int audio_pcm_hw_get_live_out (HWVoiceOut *hw);
int audio_pcm_hw_get_live_out2 (HWVoiceOut *hw, int *nb_live);
int audio_pcm_hw_clip_out (HWVoiceOut *hw, void *pcm_buf,
int live, int pending);
int audio_bug (const char *funcname, int cond);
void *audio_calloc (const char *funcname, int nmemb, size_t size);
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