96 lines
3.1 KiB
Go
96 lines
3.1 KiB
Go
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// Copyright 2022 The Oto Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package oto
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import (
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"unsafe"
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"github.com/ebitengine/purego"
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)
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const (
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avAudioSessionErrorCodeCannotStartPlaying = 0x21706c61 // '!pla'
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avAudioSessionErrorCodeCannotInterruptOthers = 0x21696e74 // '!int'
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avAudioSessionErrorCodeSiriIsRecording = 0x73697269 // 'siri'
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)
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const (
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kAudioFormatLinearPCM = 0x6C70636D //'lpcm'
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)
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const (
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kAudioFormatFlagIsFloat = 1 << 0 // 0x1
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)
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type _AudioStreamBasicDescription struct {
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mSampleRate float64
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mFormatID uint32
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mFormatFlags uint32
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mBytesPerPacket uint32
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mFramesPerPacket uint32
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mBytesPerFrame uint32
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mChannelsPerFrame uint32
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mBitsPerChannel uint32
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mReserved uint32
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}
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type _AudioQueueRef uintptr
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type _AudioTimeStamp uintptr
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type _AudioStreamPacketDescription struct {
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mStartOffset int64
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mVariableFramesInPacket uint32
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mDataByteSize uint32
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}
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type _AudioQueueBufferRef *_AudioQueueBuffer
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type _AudioQueueBuffer struct {
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mAudioDataBytesCapacity uint32
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mAudioData uintptr // void*
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mAudioDataByteSize uint32
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mUserData uintptr // void*
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mPacketDescriptionCapacity uint32
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mPacketDescriptions *_AudioStreamPacketDescription
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mPacketDescriptionCount uint32
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}
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type _AudioQueueOutputCallback func(inUserData unsafe.Pointer, inAQ _AudioQueueRef, inBuffer _AudioQueueBufferRef)
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func initializeAPI() error {
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toolbox, err := purego.Dlopen("/System/Library/Frameworks/AudioToolbox.framework/AudioToolbox", purego.RTLD_LAZY|purego.RTLD_GLOBAL)
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if err != nil {
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return err
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}
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purego.RegisterLibFunc(&_AudioQueueNewOutput, toolbox, "AudioQueueNewOutput")
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purego.RegisterLibFunc(&_AudioQueueAllocateBuffer, toolbox, "AudioQueueAllocateBuffer")
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purego.RegisterLibFunc(&_AudioQueueEnqueueBuffer, toolbox, "AudioQueueEnqueueBuffer")
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purego.RegisterLibFunc(&_AudioQueueStart, toolbox, "AudioQueueStart")
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purego.RegisterLibFunc(&_AudioQueuePause, toolbox, "AudioQueuePause")
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return nil
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}
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var _AudioQueueNewOutput func(inFormat *_AudioStreamBasicDescription, inCallbackProc _AudioQueueOutputCallback, inUserData unsafe.Pointer, inCallbackRunLoop uintptr, inCallbackRunLoopMod uintptr, inFlags uint32, outAQ *_AudioQueueRef) uintptr
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var _AudioQueueAllocateBuffer func(inAQ _AudioQueueRef, inBufferByteSize uint32, outBuffer *_AudioQueueBufferRef) uintptr
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var _AudioQueueEnqueueBuffer func(inAQ _AudioQueueRef, inBuffer _AudioQueueBufferRef, inNumPacketDescs uint32, inPackets []_AudioStreamPacketDescription) uintptr
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var _AudioQueueStart func(inAQ _AudioQueueRef, inStartTime *_AudioTimeStamp) uintptr
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var _AudioQueuePause func(inAQ _AudioQueueRef) uintptr
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