mirror of
https://github.com/Ryujinx/libsoundio.git
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466 lines
13 KiB
C
466 lines
13 KiB
C
/*
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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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#include "soundio_private.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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SoundIoChannelIdLfe,
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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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SoundIoChannelIdLfe,
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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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"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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"4.1",
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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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SoundIoChannelIdBackCenter,
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SoundIoChannelIdLfe,
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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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"5.0 (side)",
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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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"5.1",
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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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SoundIoChannelIdLfe,
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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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SoundIoChannelIdLfe,
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}
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},
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{
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"6.0 (side)",
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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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SoundIoChannelIdFrontLeftCenter,
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SoundIoChannelIdFrontRightCenter,
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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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SoundIoChannelIdLfe,
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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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SoundIoChannelIdLfe,
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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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SoundIoChannelIdFrontLeftCenter,
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SoundIoChannelIdFrontRightCenter,
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SoundIoChannelIdLfe,
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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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SoundIoChannelIdFrontLeftCenter,
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SoundIoChannelIdFrontRightCenter,
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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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SoundIoChannelIdLfe,
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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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SoundIoChannelIdFrontLeftCenter,
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SoundIoChannelIdFrontRightCenter,
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SoundIoChannelIdLfe,
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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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SoundIoChannelIdFrontLeftCenter,
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SoundIoChannelIdFrontRightCenter,
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SoundIoChannelIdLfe,
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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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#define CHANNEL_NAME_ALIAS_COUNT 3
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typedef const char *channel_names_t[CHANNEL_NAME_ALIAS_COUNT];
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static channel_names_t channel_names[] = {
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{"(Invalid Channel)", NULL, NULL},
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{"Front Left", "FL", "front-left"},
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{"Front Right", "FR", "front-right"},
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{"Front Center", "FC", "front-center"},
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{"LFE", "LFE", "lfe"},
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{"Back Left", "BL", "rear-left"},
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{"Back Right", "BR", "rear-right"},
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{"Front Left Center", "FLC", "front-left-of-center"},
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{"Front Right Center", "FRC", "front-right-of-center"},
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{"Back Center", "BC", "rear-center"},
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{"Side Left", "SL", "side-left"},
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{"Side Right", "SR", "side-right"},
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{"Top Center", "TC", "top-center"},
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{"Top Front Left", "TFL", "top-front-left"},
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{"Top Front Center", "TFC", "top-front-center"},
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{"Top Front Right", "TFR", "top-front-right"},
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{"Top Back Left", "TBL", "top-rear-left"},
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{"Top Back Center", "TBC", "top-rear-center"},
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{"Top Back Right", "TBR", "top-rear-right"},
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{"Back Left Center", NULL, NULL},
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{"Back Right Center", NULL, NULL},
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{"Front Left Wide", NULL, NULL},
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{"Front Right Wide", NULL, NULL},
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{"Front Left High", NULL, NULL},
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{"Front Center High", NULL, NULL},
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{"Front Right High", NULL, NULL},
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{"Top Front Left Center", NULL, NULL},
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{"Top Front Right Center", NULL, NULL},
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{"Top Side Left", NULL, NULL},
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{"Top Side Right", NULL, NULL},
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{"Left LFE", NULL, NULL},
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{"Right LFE", NULL, NULL},
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{"LFE 2", NULL, NULL},
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{"Bottom Center", NULL, NULL},
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{"Bottom Left Center", NULL, NULL},
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{"Bottom Right Center", NULL, NULL},
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{"Mid/Side Mid", NULL, NULL},
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{"Mid/Side Side", NULL, NULL},
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{"Ambisonic W", NULL, NULL},
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{"Ambisonic X", NULL, NULL},
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{"Ambisonic Y", NULL, NULL},
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{"Ambisonic Z", NULL, NULL},
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{"X-Y X", NULL, NULL},
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{"X-Y Y", NULL, NULL},
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{"Headphones Left", NULL, NULL},
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{"Headphones Right", NULL, NULL},
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{"Click Track", NULL, NULL},
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{"Foreign Language", NULL, NULL},
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{"Hearing Impaired", NULL, NULL},
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{"Narration", NULL, NULL},
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{"Haptic", NULL, NULL},
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{"Dialog Centric Mix", NULL, NULL},
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{"Aux", NULL, NULL},
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{"Aux 0", NULL, NULL},
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{"Aux 1", NULL, NULL},
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{"Aux 2", NULL, NULL},
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{"Aux 3", NULL, NULL},
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{"Aux 4", NULL, NULL},
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{"Aux 5", NULL, NULL},
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{"Aux 6", NULL, NULL},
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{"Aux 7", NULL, NULL},
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{"Aux 8", NULL, NULL},
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{"Aux 9", NULL, NULL},
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{"Aux 10", NULL, NULL},
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{"Aux 11", NULL, NULL},
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{"Aux 12", NULL, NULL},
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{"Aux 13", NULL, NULL},
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{"Aux 14", NULL, NULL},
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{"Aux 15", NULL, NULL},
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};
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const char *soundio_get_channel_name(enum SoundIoChannelId id) {
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if (id >= ARRAY_LENGTH(channel_names))
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return "(Invalid Channel)";
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else
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return channel_names[id][0];
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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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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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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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bool soundio_channel_layout_detect_builtin(struct SoundIoChannelLayout *layout) {
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for (int i = 0; i < ARRAY_LENGTH(builtin_channel_layouts); i += 1) {
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const struct SoundIoChannelLayout *builtin_layout = &builtin_channel_layouts[i];
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if (soundio_channel_layout_equal(builtin_layout, layout)) {
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layout->name = builtin_layout->name;
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return true;
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}
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}
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layout->name = NULL;
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return false;
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}
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const struct SoundIoChannelLayout *soundio_channel_layout_get_default(int channel_count) {
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switch (channel_count) {
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case 1: return soundio_channel_layout_get_builtin(SoundIoChannelLayoutIdMono);
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case 2: return soundio_channel_layout_get_builtin(SoundIoChannelLayoutIdStereo);
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case 3: return soundio_channel_layout_get_builtin(SoundIoChannelLayoutId3Point0);
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case 4: return soundio_channel_layout_get_builtin(SoundIoChannelLayoutId4Point0);
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case 5: return soundio_channel_layout_get_builtin(SoundIoChannelLayoutId5Point0Back);
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case 6: return soundio_channel_layout_get_builtin(SoundIoChannelLayoutId5Point1Back);
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case 7: return soundio_channel_layout_get_builtin(SoundIoChannelLayoutId6Point1);
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case 8: return soundio_channel_layout_get_builtin(SoundIoChannelLayoutId7Point1);
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}
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return NULL;
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}
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enum SoundIoChannelId soundio_parse_channel_id(const char *str, int str_len) {
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for (int id = 0; id < ARRAY_LENGTH(channel_names); id += 1) {
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for (int i = 0; i < CHANNEL_NAME_ALIAS_COUNT; i += 1) {
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const char *alias = channel_names[id][i];
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if (!alias)
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break;
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int alias_len = strlen(alias);
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if (soundio_streql(alias, alias_len, str, str_len))
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return (enum SoundIoChannelId)id;
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}
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}
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return SoundIoChannelIdInvalid;
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}
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