Commit ddabec73 authored by malc's avatar malc
Browse files

audio: introduce audio_pcm_hw_clip_out helper function 



Signed-off-by: default avatarmalc <av1474@comtv.ru>
parent 4f4cc0ef

audio/audio.c

+22 −0
Original line number Diff line number Diff line
@@ -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)

 */

audio/audio_int.h

+3 −0
Original line number Diff line number Diff line
@@ -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);