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| // Copyright (c) 2022, Qirui Wang | ||
| // All rights reserved. | ||
| // | ||
| // Redistribution and use in source and binary forms, with or without | ||
| // modification, are permitted provided that the following conditions are met: | ||
| // | ||
| // * Redistributions of source code must retain the above copyright notice, | ||
| // this list of conditions and the following disclaimer. | ||
| // * Redistributions in binary form must reproduce the above copyright notice, | ||
| // this list of conditions and the following disclaimer in the documentation | ||
| // and/or other materials provided with the distribution. | ||
| // * Neither the name of the Aegisub Group nor the names of its contributors | ||
| // may be used to endorse or promote products derived from this software | ||
| // without specific prior written permission. | ||
| // | ||
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | ||
| // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
| // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | ||
| // ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE | ||
| // LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | ||
| // CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | ||
| // SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | ||
| // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | ||
| // CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | ||
| // ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | ||
| // POSSIBILITY OF SUCH DAMAGE. | ||
| // | ||
| // Aegisub Project http://www.aegisub.org/ | ||
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| #ifdef WITH_COREAUDIO | ||
| #include "include/aegisub/audio_player.h" | ||
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| #include <mutex> | ||
| #include <AudioToolbox/AudioFormat.h> | ||
| #include <AudioToolbox/AudioQueue.h> | ||
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| #include <libaegisub/audio/provider.h> | ||
| #include <libaegisub/log.h> | ||
| #include <libaegisub/make_unique.h> | ||
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||
| namespace { | ||
| class CoreAudioPlayer final : public AudioPlayer { | ||
| static const int num_buffers = 8; | ||
| AudioQueueRef aq = nullptr; | ||
| AudioQueueBufferRef buffer[num_buffers]; | ||
| AudioStreamBasicDescription format; | ||
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| int64_t samples_per_buffer; | ||
| int64_t next_input_frame = 0, start_frame = 0, end_frame = 0; | ||
| Float64 start_sample, sample_rate = 0; | ||
| bool original = true; | ||
| bool playing = false; | ||
| std::mutex mutex; | ||
| static void Callback(void *self, AudioQueueRef inAQ, AudioQueueBufferRef inBuffer); | ||
| void FillBuffer(AudioQueueRef inAQ, AudioQueueBufferRef buffer); | ||
| Float64 GetSampleTime(); | ||
| public: | ||
| CoreAudioPlayer(agi::AudioProvider *provider); | ||
| ~CoreAudioPlayer(); | ||
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| void Play(int64_t start, int64_t count) override; | ||
| void Stop() override; | ||
| bool IsPlaying() override { return playing; } | ||
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| void SetVolume(double vol) override { AudioQueueSetParameter(aq, kAudioQueueParam_Volume, vol); } | ||
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| int64_t GetEndPosition() override { return end_frame; } | ||
| int64_t GetCurrentPosition() override; | ||
| void SetEndPosition(int64_t pos) override; | ||
| }; | ||
|
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| CoreAudioPlayer::CoreAudioPlayer(agi::AudioProvider *provider) | ||
| : AudioPlayer(provider) | ||
| { | ||
| format.mSampleRate = provider->GetSampleRate(); | ||
| format.mFormatID = kAudioFormatLinearPCM; | ||
| if (provider->AreSamplesFloat()) { | ||
| format.mFormatFlags = kAudioFormatFlagIsFloat; | ||
| } else if (provider->GetBytesPerSample() == sizeof(uint8_t)) { | ||
| format.mFormatFlags = kAudioFormatFlagsAreAllClear; | ||
| } else { | ||
| format.mFormatFlags = kAudioFormatFlagIsSignedInteger; | ||
| } | ||
| format.mBytesPerPacket = provider->GetChannels() * provider->GetBytesPerSample(); | ||
| format.mFramesPerPacket = 1; | ||
| format.mBytesPerFrame = format.mBytesPerPacket; | ||
| format.mChannelsPerFrame = provider->GetChannels(); | ||
| format.mBitsPerChannel = provider->GetBytesPerSample() * 8; | ||
| format.mReserved = 0; | ||
| OSStatus ret = AudioQueueNewOutput(&format, Callback, this, NULL, NULL, 0, &aq); | ||
| if (ret) { | ||
| if (ret == kAudioFormatUnsupportedDataFormatError) { | ||
| original = false; | ||
| format.mFormatFlags = kAudioFormatFlagIsSignedInteger; | ||
| format.mBytesPerPacket = sizeof(int16_t); | ||
| format.mFramesPerPacket = 1; | ||
| format.mBytesPerFrame = sizeof(int16_t); | ||
| format.mChannelsPerFrame = 1; | ||
| format.mBitsPerChannel = sizeof(int16_t) * 8; | ||
| ret = AudioQueueNewOutput(&format, Callback, this, NULL, NULL, 0, &aq); | ||
| if (ret) { | ||
| throw AudioPlayerOpenError("AudioQueueNewOutput failed"); | ||
| } | ||
| } else { | ||
| throw AudioPlayerOpenError("AudioQueueNewOutput failed"); | ||
| } | ||
| } | ||
| samples_per_buffer = provider->GetSampleRate() / num_buffers / 2; | ||
| for (int i = 0; i < num_buffers; ++i) { | ||
| AudioQueueAllocateBuffer(aq, samples_per_buffer * format.mBytesPerFrame, buffer + i); | ||
| } | ||
| } | ||
|
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| CoreAudioPlayer::~CoreAudioPlayer() | ||
| { | ||
| std::lock_guard<std::mutex> lock(mutex); | ||
| Stop(); | ||
| AudioQueueDispose(aq, false); | ||
| aq = nullptr; | ||
| } | ||
|
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| void CoreAudioPlayer::Callback(void *self, AudioQueueRef inAQ, AudioQueueBufferRef inBuffer) | ||
| { | ||
| CoreAudioPlayer *player = static_cast<CoreAudioPlayer*>(self); | ||
| std::lock_guard<std::mutex> lock(player->mutex); | ||
| player->FillBuffer(inAQ, inBuffer); | ||
| } | ||
|
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| void CoreAudioPlayer::FillBuffer(AudioQueueRef inAQ, AudioQueueBufferRef buffer) | ||
| { | ||
| if (!playing) { | ||
| LOG_D("audio/player/coreaudio") << "FillBuffer quit: not playing"; | ||
| return; | ||
| } | ||
| int fill_len = std::min<int>(end_frame - next_input_frame, samples_per_buffer); | ||
| if (fill_len <= 0) { | ||
| LOG_D("audio/player/coreaudio") << "FillBuffer quit: zero fill_len"; | ||
| return; | ||
| } | ||
| if (original) { | ||
| provider->GetAudio(buffer->mAudioData, next_input_frame, fill_len); | ||
| } else { | ||
| provider->GetInt16MonoAudio(reinterpret_cast<int16_t*>(buffer->mAudioData), next_input_frame, fill_len); | ||
| } | ||
| next_input_frame += fill_len; | ||
| buffer->mAudioDataByteSize = fill_len * format.mBytesPerFrame; | ||
| buffer->mPacketDescriptionCount = 0; | ||
| buffer->mUserData = NULL; | ||
| AudioQueueEnqueueBuffer(inAQ, buffer, 0, NULL); | ||
| } | ||
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| Float64 CoreAudioPlayer::GetSampleTime() | ||
| { | ||
| AudioTimeStamp ts; | ||
| AudioQueueDeviceGetCurrentTime(aq, &ts); | ||
| if (ts.mFlags & kAudioTimeStampSampleTimeValid) | ||
| return ts.mSampleTime; | ||
| return 0; | ||
| } | ||
|
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| void CoreAudioPlayer::Play(int64_t start, int64_t count) | ||
| { | ||
| playing = false; | ||
| AudioQueueReset(aq); | ||
|
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| start_frame = start; | ||
| end_frame = start + count; | ||
| next_input_frame = start; | ||
| playing = true; | ||
| OSStatus ret = AudioQueueStart(aq, NULL); | ||
| if (ret) { | ||
| throw AudioPlayerOpenError("AudioQueueStart failed"); | ||
| } | ||
| for (int i = 0; i < num_buffers; ++i) { | ||
| FillBuffer(aq, buffer[i]); | ||
| } | ||
| start_sample = GetSampleTime(); | ||
| LOG_D("audio/player/coreaudio") << "Playback begun"; | ||
| } | ||
|
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| void CoreAudioPlayer::Stop() | ||
| { | ||
| LOG_D("audio/player/coreaudio") << "Stop"; | ||
| playing = false; | ||
| AudioQueueStop(aq, true); | ||
| } | ||
|
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| int64_t CoreAudioPlayer::GetCurrentPosition() | ||
| { | ||
| Float64 samples = GetSampleTime() - start_sample; | ||
| if (sample_rate == 0) { | ||
| UInt32 size = sizeof(sample_rate); | ||
| AudioQueueGetProperty(aq, kAudioQueueDeviceProperty_SampleRate, &sample_rate, &size); | ||
| } | ||
| if (sample_rate == 0) { | ||
| return start_frame; | ||
| } | ||
| return samples / sample_rate * provider->GetSampleRate() + start_frame; | ||
| } | ||
|
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| void CoreAudioPlayer::SetEndPosition(int64_t pos) | ||
| { | ||
| end_frame = pos; | ||
| if (end_frame <= GetCurrentPosition()) | ||
| Stop(); | ||
| } | ||
|
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| } | ||
|
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| std::unique_ptr<AudioPlayer> CreateCoreAudioPlayer(agi::AudioProvider *provider, wxWindow *) | ||
| { | ||
| return agi::make_unique<CoreAudioPlayer>(provider); | ||
| } | ||
|
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| #endif // WITH_COREAUDIO |