diff options
| author | Michael Walle <michael@walle.cc> | 2011-01-05 01:05:47 +0100 |
|---|---|---|
| committer | malc <av1474@comtv.ru> | 2011-01-12 18:36:22 +0300 |
| commit | 00e076795f2d6dfa0c078ff5d5ee5d77190cb4b9 (patch) | |
| tree | 125088eea53cc55083a5b69e927937b89db22645 /audio/audio.c | |
| parent | 0f136d9e060ad879d0b840274ddfd1955e24fc10 (diff) | |
| download | qemu-00e076795f2d6dfa0c078ff5d5ee5d77190cb4b9.tar.gz | |
audio: split sample conversion and volume mixing
Refactor the volume mixing, so it can be reused for capturing devices.
Additionally, it removes superfluous multiplications with the nominal
volume within the hardware voice code path.
Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: malc <av1474@comtv.ru>
Diffstat (limited to 'audio/audio.c')
| -rw-r--r-- | audio/audio.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/audio/audio.c b/audio/audio.c index 17074469b2..1729c0be2c 100644 --- a/audio/audio.c +++ b/audio/audio.c @@ -104,7 +104,7 @@ static struct { static AudioState glob_audio_state; -struct mixeng_volume nominal_volume = { +const struct mixeng_volume nominal_volume = { .mute = 0, #ifdef FLOAT_MIXENG .r = 1.0, @@ -702,13 +702,11 @@ void audio_pcm_info_clear_buf (struct audio_pcm_info *info, void *buf, int len) /* * Capture */ -static void noop_conv (struct st_sample *dst, const void *src, - int samples, struct mixeng_volume *vol) +static void noop_conv (struct st_sample *dst, const void *src, int samples) { (void) src; (void) dst; (void) samples; - (void) vol; } static CaptureVoiceOut *audio_pcm_capture_find_specific ( @@ -956,6 +954,8 @@ int audio_pcm_sw_read (SWVoiceIn *sw, void *buf, int size) total += isamp; } + mixeng_volume (sw->buf, ret, &sw->vol); + sw->clip (buf, sw->buf, ret); sw->total_hw_samples_acquired += total; return ret << sw->info.shift; @@ -1037,7 +1037,8 @@ int audio_pcm_sw_write (SWVoiceOut *sw, void *buf, int size) swlim = ((int64_t) dead << 32) / sw->ratio; swlim = audio_MIN (swlim, samples); if (swlim) { - sw->conv (sw->buf, buf, swlim, &sw->vol); + sw->conv (sw->buf, buf, swlim); + mixeng_volume (sw->buf, swlim, &sw->vol); } while (swlim) { |