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audio: refactor audio_get_avail()

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Split out the code in audio_get_avail() that calculates the
buffer size that the audio frontend can read. This is similar
to the code changes in audio_get_free().

Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20220923183640.8314-10-vr_qemu@t-online.de>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Volker Rümelin 2022-09-23 20:36:38 +02:00 committed by Gerd Hoffmann
parent c4e592647e
commit 0724c57988
1 changed files with 19 additions and 5 deletions
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24
audio/audio.c
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@ -986,6 +986,18 @@ void AUD_set_active_in (SWVoiceIn *sw, int on)
}
}
/**
* audio_frontend_frames_in() - returns the number of frames the resampling
* code generates from frames_in frames
*
* @sw: audio recording frontend
* @frames_in: number of frames
*/
static size_t audio_frontend_frames_in(SWVoiceIn *sw, size_t frames_in)
{
return ((int64_t)frames_in << 32) / sw->ratio;
}
static size_t audio_get_avail (SWVoiceIn *sw)
{
size_t live;
@ -1002,12 +1014,12 @@ static size_t audio_get_avail (SWVoiceIn *sw)
}
ldebug (
"%s: get_avail live %zu ret %" PRId64 "\n",
"%s: get_avail live %zu frontend frames %zu\n",
SW_NAME (sw),
live, (((int64_t) live << 32) / sw->ratio) * sw->info.bytes_per_frame
live, audio_frontend_frames_in(sw, live)
);
return (((int64_t) live << 32) / sw->ratio) * sw->info.bytes_per_frame;
return live;
}
/**
@ -1309,11 +1321,13 @@ static void audio_run_in (AudioState *s)
sw->total_hw_samples_acquired -= min;
if (sw->active) {
size_t sw_avail = audio_get_avail(sw);
size_t avail;
avail = audio_get_avail (sw);
avail = audio_frontend_frames_in(sw, sw_avail);
if (avail > 0) {
sw->callback.fn (sw->callback.opaque, avail);
sw->callback.fn(sw->callback.opaque,
avail * sw->info.bytes_per_frame);
}
}
}