mirror of https://github.com/AxioDL/boo.git
292 lines
11 KiB
C++
292 lines
11 KiB
C++
#include "boo/audiodev/IAudioVoiceAllocator.hpp"
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#include "logvisor/logvisor.hpp"
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#include <AudioToolbox/AudioToolbox.h>
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namespace boo
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{
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static logvisor::Module Log("boo::AQS");
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static AudioChannel AQSChannelToBooChannel(AudioChannelLabel ch)
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{
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switch (ch)
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{
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case kAudioChannelLabel_Left:
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return AudioChannel::FrontLeft;
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case kAudioChannelLabel_Right:
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return AudioChannel::FrontRight;
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case kAudioChannelLabel_LeftSurround:
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return AudioChannel::RearLeft;
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case kAudioChannelLabel_RightSurround:
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return AudioChannel::RearRight;
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case kAudioChannelLabel_Center:
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return AudioChannel::FrontCenter;
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case kAudioChannelLabel_LFEScreen:
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return AudioChannel::LFE;
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case kAudioChannelLabel_LeftSurroundDirect:
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return AudioChannel::RearLeft;
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case kAudioChannelLabel_RightSurroundDirect:
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return AudioChannel::SideRight;
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}
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return AudioChannel::Unknown;
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}
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struct AQSAudioVoice : IAudioVoice
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{
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ChannelMap m_map;
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IAudioVoiceCallback* m_cb;
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AudioQueueRef m_queue = nullptr;
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AudioQueueBufferRef m_buffers[3];
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size_t m_bufferFrames = 1024;
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size_t m_frameSize;
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const ChannelMap& channelMap() const {return m_map;}
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AudioQueueBufferRef m_callbackBuf = nullptr;
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unsigned m_primeBuf;
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static void Callback(void* inUserData, AudioQueueRef inAQ, AudioQueueBufferRef inBuffer)
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{
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AQSAudioVoice* voice = static_cast<AQSAudioVoice*>(inUserData);
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voice->m_callbackBuf = inBuffer;
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voice->m_cb->needsNextBuffer(*voice, voice->m_bufferFrames);
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voice->m_callbackBuf = nullptr;
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}
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AQSAudioVoice(AudioChannelSet set, unsigned sampleRate, IAudioVoiceCallback* cb)
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: m_cb(cb)
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{
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unsigned chCount = ChannelCount(set);
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AudioStreamBasicDescription desc = {};
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desc.mSampleRate = sampleRate;
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desc.mFormatID = kAudioFormatLinearPCM;
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desc.mFormatFlags = kLinearPCMFormatFlagIsSignedInteger;
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desc.mBytesPerPacket = chCount * 2;
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desc.mFramesPerPacket = 1;
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desc.mBytesPerFrame = chCount * 2;
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desc.mChannelsPerFrame = chCount;
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desc.mBitsPerChannel = 16;
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OSStatus err;
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while ((err = AudioQueueNewOutput(&desc, AudioQueueOutputCallback(Callback),
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this, nullptr, nullptr, 0, &m_queue)))
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{
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if (set == AudioChannelSet::Stereo)
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break;
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set = AudioChannelSet(int(set) - 1);
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chCount = ChannelCount(set);
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desc.mBytesPerPacket = chCount * 2;
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desc.mBytesPerFrame = chCount * 2;
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desc.mChannelsPerFrame = chCount;
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}
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if (err)
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{
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Log.report(logvisor::Fatal, "unable to create output audio queue");
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return;
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}
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if (chCount > 2)
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{
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AudioChannelLayout layout;
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UInt32 layoutSz = sizeof(layout);
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if (AudioQueueGetProperty(m_queue, kAudioQueueProperty_ChannelLayout, &layout, &layoutSz))
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{
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Log.report(logvisor::Fatal, "unable to get channel layout from audio queue");
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return;
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}
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switch (layout.mChannelLayoutTag)
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{
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case kAudioChannelLayoutTag_UseChannelDescriptions:
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m_map.m_channelCount = layout.mNumberChannelDescriptions;
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for (int i=0 ; i<layout.mNumberChannelDescriptions ; ++i)
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{
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AudioChannel ch = AQSChannelToBooChannel(layout.mChannelDescriptions[i].mChannelLabel);
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m_map.m_channels[i] = ch;
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}
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break;
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case kAudioChannelLayoutTag_UseChannelBitmap:
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if ((layout.mChannelBitmap & kAudioChannelBit_Left) != 0)
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m_map.m_channels[m_map.m_channelCount++] = AudioChannel::FrontLeft;
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if ((layout.mChannelBitmap & kAudioChannelBit_Right) != 0)
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m_map.m_channels[m_map.m_channelCount++] = AudioChannel::FrontRight;
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if ((layout.mChannelBitmap & kAudioChannelBit_Center) != 0)
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m_map.m_channels[m_map.m_channelCount++] = AudioChannel::FrontCenter;
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if ((layout.mChannelBitmap & kAudioChannelBit_LFEScreen) != 0)
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m_map.m_channels[m_map.m_channelCount++] = AudioChannel::LFE;
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if ((layout.mChannelBitmap & kAudioChannelBit_LeftSurround) != 0)
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m_map.m_channels[m_map.m_channelCount++] = AudioChannel::RearLeft;
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if ((layout.mChannelBitmap & kAudioChannelBit_RightSurround) != 0)
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m_map.m_channels[m_map.m_channelCount++] = AudioChannel::RearRight;
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if ((layout.mChannelBitmap & kAudioChannelBit_LeftSurroundDirect) != 0)
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m_map.m_channels[m_map.m_channelCount++] = AudioChannel::SideLeft;
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if ((layout.mChannelBitmap & kAudioChannelBit_RightSurroundDirect) != 0)
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m_map.m_channels[m_map.m_channelCount++] = AudioChannel::SideRight;
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break;
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case kAudioChannelLayoutTag_Stereo:
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case kAudioChannelLayoutTag_StereoHeadphones:
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m_map.m_channelCount = 2;
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m_map.m_channels[0] = AudioChannel::FrontLeft;
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m_map.m_channels[1] = AudioChannel::FrontRight;
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break;
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case kAudioChannelLayoutTag_Quadraphonic:
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m_map.m_channelCount = 4;
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m_map.m_channels[0] = AudioChannel::FrontLeft;
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m_map.m_channels[1] = AudioChannel::FrontRight;
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m_map.m_channels[2] = AudioChannel::RearLeft;
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m_map.m_channels[3] = AudioChannel::RearRight;
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break;
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case kAudioChannelLayoutTag_Pentagonal:
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m_map.m_channelCount = 5;
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m_map.m_channels[0] = AudioChannel::FrontLeft;
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m_map.m_channels[1] = AudioChannel::FrontRight;
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m_map.m_channels[2] = AudioChannel::RearLeft;
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m_map.m_channels[3] = AudioChannel::RearRight;
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m_map.m_channels[4] = AudioChannel::FrontCenter;
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break;
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default:
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Log.report(logvisor::Fatal,
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"unknown channel layout %u; using stereo",
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layout.mChannelLayoutTag);
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m_map.m_channelCount = 2;
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m_map.m_channels[0] = AudioChannel::FrontLeft;
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m_map.m_channels[1] = AudioChannel::FrontRight;
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break;
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}
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}
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else
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{
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m_map.m_channels[m_map.m_channelCount++] = AudioChannel::FrontLeft;
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m_map.m_channels[m_map.m_channelCount++] = AudioChannel::FrontRight;
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}
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while (m_map.m_channelCount < chCount)
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m_map.m_channels[m_map.m_channelCount++] = AudioChannel::Unknown;
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for (int i=0 ; i<3 ; ++i)
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if (AudioQueueAllocateBuffer(m_queue, m_bufferFrames * chCount * 2, &m_buffers[i]))
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{
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Log.report(logvisor::Fatal, "unable to create audio queue buffer");
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AudioQueueDispose(m_queue, false);
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m_queue = nullptr;
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return;
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}
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m_frameSize = chCount * 2;
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for (unsigned i=0 ; i<3 ; ++i)
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{
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m_primeBuf = i;
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m_cb->needsNextBuffer(*this, m_bufferFrames);
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}
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AudioQueuePrime(m_queue, 0, nullptr);
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}
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~AQSAudioVoice()
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{
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AudioQueueDispose(m_queue, false);
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}
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void bufferSampleData(const int16_t* data, size_t frames)
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{
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if (m_callbackBuf)
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{
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m_callbackBuf->mAudioDataByteSize =
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std::min(UInt32(frames * m_frameSize), m_callbackBuf->mAudioDataBytesCapacity);
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memcpy(m_callbackBuf->mAudioData, data, m_callbackBuf->mAudioDataByteSize);
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AudioQueueEnqueueBuffer(m_queue, m_callbackBuf, 0, nullptr);
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}
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else
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{
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AudioQueueBufferRef buf = m_buffers[m_primeBuf];
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buf->mAudioDataByteSize =
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std::min(UInt32(frames * m_frameSize), buf->mAudioDataBytesCapacity);
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memcpy(buf->mAudioData, data, buf->mAudioDataByteSize);
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AudioQueueEnqueueBuffer(m_queue, buf, 0, nullptr);
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}
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}
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void start()
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{
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AudioQueueStart(m_queue, nullptr);
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}
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void stop()
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{
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AudioQueueStop(m_queue, false);
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}
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};
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struct AQSAudioVoiceAllocator : IAudioVoiceAllocator
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{
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static void DummyCallback(void* inUserData, AudioQueueRef inAQ, AudioQueueBufferRef inBuffer) {}
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AudioChannelSet getAvailableSet()
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{
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const unsigned chCount = 8;
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AudioStreamBasicDescription desc = {};
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desc.mSampleRate = 32000;
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desc.mFormatID = kAudioFormatLinearPCM;
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desc.mFormatFlags = kLinearPCMFormatFlagIsSignedInteger;
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desc.mBytesPerPacket = chCount * 2;
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desc.mFramesPerPacket = 1;
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desc.mBytesPerFrame = chCount * 2;
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desc.mChannelsPerFrame = chCount;
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desc.mBitsPerChannel = 16;
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AudioQueueRef queue;
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if (AudioQueueNewOutput(&desc, AudioQueueOutputCallback(DummyCallback),
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this, nullptr, nullptr, 0, &queue))
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{
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Log.report(logvisor::Error, "unable to create output audio queue");
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return AudioChannelSet::Unknown;
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}
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UInt32 hwChannels;
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UInt32 channelsSz = sizeof(UInt32);
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if (AudioQueueGetProperty(queue, kAudioQueueDeviceProperty_NumberChannels, &hwChannels, &channelsSz))
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{
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Log.report(logvisor::Error, "unable to get channel count from audio queue");
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AudioQueueDispose(queue, true);
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return AudioChannelSet::Unknown;
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}
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AudioQueueDispose(queue, true);
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switch (hwChannels)
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{
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case 2:
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return AudioChannelSet::Stereo;
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case 4:
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return AudioChannelSet::Quad;
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case 6:
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return AudioChannelSet::Surround51;
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case 8:
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return AudioChannelSet::Surround71;
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default: break;
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}
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return AudioChannelSet::Unknown;
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}
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std::unique_ptr<IAudioVoice> allocateNewVoice(AudioChannelSet layoutOut,
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unsigned sampleRate,
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IAudioVoiceCallback* cb)
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{
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AQSAudioVoice* newVoice = new AQSAudioVoice(layoutOut, sampleRate, cb);
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std::unique_ptr<IAudioVoice> ret(newVoice);
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if (!newVoice->m_queue)
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return {};
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return ret;
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}
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void pumpVoices() {}
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};
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std::unique_ptr<IAudioVoiceAllocator> NewAudioVoiceAllocator()
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{
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return std::make_unique<AQSAudioVoiceAllocator>();
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}
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}
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