2015-07-01 08:02:44 +00:00
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/*
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* Copyright (c) 2015 Andrew Kelley
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*
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* This file is part of libsoundio, which is MIT licensed.
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* See http://opensource.org/licenses/MIT
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*/
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2015-07-01 08:20:26 +00:00
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#include "soundio.hpp"
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2015-07-01 08:02:44 +00:00
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#include "util.hpp"
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#include "dummy.hpp"
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#include "pulseaudio.hpp"
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#include <assert.h>
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#include <stdio.h>
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static struct SoundIoChannelLayout builtin_channel_layouts[] = {
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{
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"Mono",
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1,
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{
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SoundIoChannelIdFrontCenter,
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},
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},
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{
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"Stereo",
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2,
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{
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SoundIoChannelIdFrontLeft,
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SoundIoChannelIdFrontRight,
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},
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},
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{
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"2.1",
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3,
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{
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SoundIoChannelIdFrontLeft,
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SoundIoChannelIdFrontRight,
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SoundIoChannelIdLowFrequency,
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},
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},
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{
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"3.0",
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3,
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{
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SoundIoChannelIdFrontLeft,
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SoundIoChannelIdFrontRight,
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SoundIoChannelIdFrontCenter,
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}
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},
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{
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"3.0 (back)",
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3,
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{
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SoundIoChannelIdFrontLeft,
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SoundIoChannelIdFrontRight,
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SoundIoChannelIdBackCenter,
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}
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},
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{
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"3.1",
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4,
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{
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SoundIoChannelIdFrontLeft,
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SoundIoChannelIdFrontRight,
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SoundIoChannelIdFrontCenter,
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SoundIoChannelIdLowFrequency,
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}
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},
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{
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"4.0",
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4,
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{
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SoundIoChannelIdFrontLeft,
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SoundIoChannelIdFrontRight,
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SoundIoChannelIdFrontCenter,
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SoundIoChannelIdBackCenter,
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}
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},
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{
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"4.1",
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4,
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{
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SoundIoChannelIdFrontLeft,
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SoundIoChannelIdFrontRight,
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SoundIoChannelIdFrontCenter,
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SoundIoChannelIdLowFrequency,
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}
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},
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{
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"Quad",
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4,
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{
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SoundIoChannelIdFrontLeft,
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SoundIoChannelIdFrontRight,
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SoundIoChannelIdBackLeft,
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SoundIoChannelIdBackRight,
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},
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},
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{
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"Quad (side)",
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4,
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{
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SoundIoChannelIdFrontLeft,
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SoundIoChannelIdFrontRight,
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SoundIoChannelIdSideLeft,
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SoundIoChannelIdSideRight,
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}
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},
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{
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"5.0",
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5,
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{
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SoundIoChannelIdFrontLeft,
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SoundIoChannelIdFrontRight,
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SoundIoChannelIdFrontCenter,
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SoundIoChannelIdSideLeft,
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SoundIoChannelIdSideRight,
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}
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},
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{
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"5.0 (back)",
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5,
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{
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SoundIoChannelIdFrontLeft,
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SoundIoChannelIdFrontRight,
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SoundIoChannelIdFrontCenter,
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SoundIoChannelIdBackLeft,
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SoundIoChannelIdBackRight,
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}
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},
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{
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"5.1",
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6,
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{
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SoundIoChannelIdFrontLeft,
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SoundIoChannelIdFrontRight,
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SoundIoChannelIdFrontCenter,
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SoundIoChannelIdSideLeft,
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SoundIoChannelIdSideRight,
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SoundIoChannelIdLowFrequency,
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}
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},
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{
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"5.1 (back)",
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6,
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{
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SoundIoChannelIdFrontLeft,
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SoundIoChannelIdFrontRight,
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SoundIoChannelIdFrontCenter,
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SoundIoChannelIdBackLeft,
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SoundIoChannelIdBackRight,
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SoundIoChannelIdLowFrequency,
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}
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},
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{
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"6.0",
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6,
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{
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SoundIoChannelIdFrontLeft,
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SoundIoChannelIdFrontRight,
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SoundIoChannelIdFrontCenter,
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SoundIoChannelIdSideLeft,
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SoundIoChannelIdSideRight,
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SoundIoChannelIdBackCenter,
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}
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},
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{
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"6.0 (front)",
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6,
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{
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SoundIoChannelIdFrontLeft,
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SoundIoChannelIdFrontRight,
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SoundIoChannelIdSideLeft,
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SoundIoChannelIdSideRight,
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SoundIoChannelIdFrontLeftOfCenter,
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SoundIoChannelIdFrontRightOfCenter,
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}
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},
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{
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"Hexagonal",
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6,
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{
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SoundIoChannelIdFrontLeft,
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SoundIoChannelIdFrontRight,
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SoundIoChannelIdFrontCenter,
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SoundIoChannelIdBackLeft,
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SoundIoChannelIdBackRight,
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SoundIoChannelIdBackCenter,
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}
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},
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{
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"6.1",
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7,
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{
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SoundIoChannelIdFrontLeft,
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SoundIoChannelIdFrontRight,
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SoundIoChannelIdFrontCenter,
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SoundIoChannelIdSideLeft,
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SoundIoChannelIdSideRight,
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SoundIoChannelIdBackCenter,
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SoundIoChannelIdLowFrequency,
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}
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},
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{
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"6.1 (back)",
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7,
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{
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SoundIoChannelIdFrontLeft,
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SoundIoChannelIdFrontRight,
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SoundIoChannelIdFrontCenter,
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SoundIoChannelIdBackLeft,
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SoundIoChannelIdBackRight,
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SoundIoChannelIdBackCenter,
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SoundIoChannelIdLowFrequency,
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}
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},
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{
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"6.1 (front)",
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7,
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{
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SoundIoChannelIdFrontLeft,
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SoundIoChannelIdFrontRight,
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SoundIoChannelIdSideLeft,
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SoundIoChannelIdSideRight,
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SoundIoChannelIdFrontLeftOfCenter,
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SoundIoChannelIdFrontRightOfCenter,
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SoundIoChannelIdLowFrequency,
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}
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},
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{
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"7.0",
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7,
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{
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SoundIoChannelIdFrontLeft,
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SoundIoChannelIdFrontRight,
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SoundIoChannelIdFrontCenter,
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SoundIoChannelIdSideLeft,
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SoundIoChannelIdSideRight,
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SoundIoChannelIdBackLeft,
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SoundIoChannelIdBackRight,
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}
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},
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{
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"7.0 (front)",
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7,
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{
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SoundIoChannelIdFrontLeft,
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SoundIoChannelIdFrontRight,
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SoundIoChannelIdFrontCenter,
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SoundIoChannelIdSideLeft,
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SoundIoChannelIdSideRight,
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SoundIoChannelIdFrontLeftOfCenter,
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SoundIoChannelIdFrontRightOfCenter,
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}
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},
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{
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"7.1",
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8,
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{
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SoundIoChannelIdFrontLeft,
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SoundIoChannelIdFrontRight,
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SoundIoChannelIdFrontCenter,
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SoundIoChannelIdSideLeft,
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SoundIoChannelIdSideRight,
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SoundIoChannelIdBackLeft,
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SoundIoChannelIdBackRight,
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SoundIoChannelIdLowFrequency,
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}
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},
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{
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"7.1 (wide)",
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8,
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{
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SoundIoChannelIdFrontLeft,
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SoundIoChannelIdFrontRight,
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SoundIoChannelIdFrontCenter,
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SoundIoChannelIdSideLeft,
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SoundIoChannelIdSideRight,
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SoundIoChannelIdFrontLeftOfCenter,
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SoundIoChannelIdFrontRightOfCenter,
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SoundIoChannelIdLowFrequency,
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}
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},
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{
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"7.1 (wide) (back)",
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8,
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{
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SoundIoChannelIdFrontLeft,
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SoundIoChannelIdFrontRight,
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SoundIoChannelIdFrontCenter,
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SoundIoChannelIdBackLeft,
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SoundIoChannelIdBackRight,
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SoundIoChannelIdFrontLeftOfCenter,
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SoundIoChannelIdFrontRightOfCenter,
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SoundIoChannelIdLowFrequency,
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}
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},
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{
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"Octagonal",
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8,
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{
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SoundIoChannelIdFrontLeft,
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SoundIoChannelIdFrontRight,
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SoundIoChannelIdFrontCenter,
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SoundIoChannelIdSideLeft,
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SoundIoChannelIdSideRight,
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SoundIoChannelIdBackLeft,
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SoundIoChannelIdBackRight,
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SoundIoChannelIdBackCenter,
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}
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},
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};
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int soundio_get_bytes_per_sample(enum SoundIoSampleFormat sample_format) {
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switch (sample_format) {
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case SoundIoSampleFormatUInt8: return 1;
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case SoundIoSampleFormatInt16: return 2;
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case SoundIoSampleFormatInt24: return 3;
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case SoundIoSampleFormatInt32: return 4;
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case SoundIoSampleFormatFloat: return 4;
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case SoundIoSampleFormatDouble: return 8;
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case SoundIoSampleFormatInvalid: panic("invalid sample format");
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}
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panic("invalid sample format");
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}
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const char * soundio_sample_format_string(enum SoundIoSampleFormat sample_format) {
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switch (sample_format) {
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case SoundIoSampleFormatUInt8: return "unsigned 8-bit integer";
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case SoundIoSampleFormatInt16: return "signed 16-bit integer";
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case SoundIoSampleFormatInt24: return "signed 24-bit integer";
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case SoundIoSampleFormatInt32: return "signed 32-bit integer";
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case SoundIoSampleFormatFloat: return "32-bit float";
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case SoundIoSampleFormatDouble: return "64-bit float";
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case SoundIoSampleFormatInvalid: return "invalid sample format";
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}
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panic("invalid sample format");
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}
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bool soundio_channel_layout_equal(
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const struct SoundIoChannelLayout *a,
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const struct SoundIoChannelLayout *b)
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{
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if (a->channel_count != b->channel_count)
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return false;
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for (int i = 0; i < a->channel_count; i += 1) {
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if (a->channels[i] != b->channels[i])
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return false;
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}
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return true;
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}
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const char *soundio_get_channel_name(enum SoundIoChannelId id) {
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switch (id) {
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case SoundIoChannelIdInvalid: return "(Invalid Channel)";
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case SoundIoChannelIdCount: return "(Invalid Channel)";
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case SoundIoChannelIdFrontLeft: return "Front Left";
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case SoundIoChannelIdFrontRight: return "Front Right";
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case SoundIoChannelIdFrontCenter: return "Front Center";
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case SoundIoChannelIdLowFrequency: return "Low Frequency";
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case SoundIoChannelIdBackLeft: return "Back Left";
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case SoundIoChannelIdBackRight: return "Back Right";
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case SoundIoChannelIdFrontLeftOfCenter: return "Front Left of Center";
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case SoundIoChannelIdFrontRightOfCenter: return "Front Right of Center";
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case SoundIoChannelIdBackCenter: return "Back Center";
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case SoundIoChannelIdSideLeft: return "Side Left";
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case SoundIoChannelIdSideRight: return "Side Right";
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case SoundIoChannelIdTopCenter: return "Top Center";
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case SoundIoChannelIdTopFrontLeft: return "Top Front Left";
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case SoundIoChannelIdTopFrontCenter: return "Top Front Center";
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case SoundIoChannelIdTopFrontRight: return "Top Front Right";
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case SoundIoChannelIdTopBackLeft: return "Top Back Left";
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case SoundIoChannelIdTopBackCenter: return "Top Back Center";
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case SoundIoChannelIdTopBackRight: return "Top Back Right";
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}
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return "(Invalid Channel)";
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}
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int soundio_channel_layout_builtin_count(void) {
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return array_length(builtin_channel_layouts);
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}
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const struct SoundIoChannelLayout *soundio_channel_layout_get_builtin(int index) {
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assert(index >= 0);
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assert(index <= array_length(builtin_channel_layouts));
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return &builtin_channel_layouts[index];
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}
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void soundio_debug_print_channel_layout(const struct SoundIoChannelLayout *layout) {
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if (layout->name) {
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fprintf(stderr, "%s\n", layout->name);
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} else {
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fprintf(stderr, "%s", soundio_get_channel_name(layout->channels[0]));
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for (int i = 1; i < layout->channel_count; i += 1) {
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fprintf(stderr, ", %s", soundio_get_channel_name(layout->channels[i]));
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}
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fprintf(stderr, "\n");
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}
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}
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int soundio_channel_layout_find_channel(
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const struct SoundIoChannelLayout *layout, enum SoundIoChannelId channel)
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{
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for (int i = 0; i < layout->channel_count; i += 1) {
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if (layout->channels[i] == channel)
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return i;
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}
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return -1;
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}
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const char *soundio_error_string(int error) {
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switch ((enum SoundIoError)error) {
|
|
|
|
case SoundIoErrorNone: return "(no error)";
|
|
|
|
case SoundIoErrorNoMem: return "out of memory";
|
|
|
|
case SoundIoErrorInitAudioBackend: return "unable to initialize audio backend";
|
|
|
|
case SoundIoErrorSystemResources: return "system resource not available";
|
|
|
|
case SoundIoErrorOpeningDevice: return "unable to open device";
|
|
|
|
}
|
|
|
|
panic("invalid error enum value: %d", error);
|
|
|
|
}
|
|
|
|
|
|
|
|
const char *soundio_backend_name(enum SoundIoBackend backend) {
|
|
|
|
switch (backend) {
|
|
|
|
case SoundIoBackendPulseAudio: return "PulseAudio";
|
|
|
|
case SoundIoBackendDummy: return "Dummy";
|
|
|
|
}
|
|
|
|
panic("invalid backend enum value: %d", (int)backend);
|
|
|
|
}
|
|
|
|
|
|
|
|
void soundio_destroy(struct SoundIo *soundio) {
|
|
|
|
if (!soundio)
|
|
|
|
return;
|
|
|
|
|
|
|
|
if (soundio->destroy)
|
|
|
|
soundio->destroy(soundio);
|
|
|
|
|
|
|
|
destroy(soundio);
|
|
|
|
}
|
|
|
|
|
|
|
|
int soundio_create(struct SoundIo **out_soundio) {
|
|
|
|
*out_soundio = NULL;
|
|
|
|
|
|
|
|
struct SoundIo *soundio = create<SoundIo>();
|
|
|
|
if (!soundio) {
|
|
|
|
soundio_destroy(soundio);
|
|
|
|
return SoundIoErrorNoMem;
|
|
|
|
}
|
|
|
|
|
|
|
|
int err;
|
|
|
|
|
|
|
|
err = soundio_pulseaudio_init(soundio);
|
|
|
|
if (err != SoundIoErrorInitAudioBackend) {
|
|
|
|
soundio_destroy(soundio);
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
err = soundio_dummy_init(soundio);
|
|
|
|
if (err) {
|
|
|
|
soundio_destroy(soundio);
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
*out_soundio = soundio;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
void soundio_flush_events(struct SoundIo *soundio) {
|
|
|
|
if (soundio->flush_events)
|
|
|
|
soundio->flush_events(soundio);
|
|
|
|
}
|
2015-07-01 08:20:26 +00:00
|
|
|
|
|
|
|
int soundio_get_input_device_count(struct SoundIo *soundio) {
|
|
|
|
assert(soundio->safe_devices_info);
|
|
|
|
return soundio->safe_devices_info->input_devices.length;
|
|
|
|
}
|
|
|
|
|
|
|
|
int soundio_get_output_device_count(struct SoundIo *soundio) {
|
|
|
|
assert(soundio->safe_devices_info);
|
|
|
|
return soundio->safe_devices_info->output_devices.length;
|
|
|
|
}
|