| /* |
| * Copyright (C) 2017 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. 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. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 APPLE INC. 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. |
| */ |
| |
| #pragma once |
| |
| #if ENABLE(MEDIA_STREAM) |
| |
| #include "CARingBuffer.h" |
| #include "WebAudioBufferList.h" |
| #include <CoreAudio/CoreAudioTypes.h> |
| #include <wtf/Lock.h> |
| #include <wtf/RefCounted.h> |
| #include <wtf/RefPtr.h> |
| |
| typedef struct AudioStreamBasicDescription AudioStreamBasicDescription; |
| typedef struct OpaqueAudioConverter* AudioConverterRef; |
| |
| namespace WebCore { |
| |
| class AudioSampleBufferList : public RefCounted<AudioSampleBufferList> { |
| public: |
| static Ref<AudioSampleBufferList> create(const CAAudioStreamDescription&, size_t); |
| |
| ~AudioSampleBufferList(); |
| |
| static inline size_t audioBufferListSizeForStream(const CAAudioStreamDescription&); |
| |
| static void applyGain(AudioBufferList&, float, AudioStreamDescription::PCMFormat); |
| void applyGain(float); |
| |
| OSStatus copyFrom(const AudioSampleBufferList&, size_t count = SIZE_MAX); |
| OSStatus copyFrom(const AudioBufferList&, size_t frameCount, AudioConverterRef); |
| OSStatus copyFrom(AudioSampleBufferList&, size_t frameCount, AudioConverterRef); |
| OSStatus copyFrom(CARingBuffer&, size_t frameCount, uint64_t startFrame, CARingBuffer::FetchMode); |
| |
| OSStatus mixFrom(const AudioSampleBufferList&, size_t count = SIZE_MAX); |
| |
| OSStatus copyTo(AudioBufferList&, size_t count = SIZE_MAX); |
| |
| const AudioStreamBasicDescription& streamDescription() const { return m_internalFormat->streamDescription(); } |
| const WebAudioBufferList& bufferList() const { return m_bufferList; } |
| WebAudioBufferList& bufferList() { return m_bufferList; } |
| |
| uint32_t sampleCapacity() const { return m_sampleCapacity; } |
| uint32_t sampleCount() const { return m_sampleCount; } |
| void setSampleCount(size_t); |
| |
| uint64_t timestamp() const { return m_timestamp; } |
| double hostTime() const { return m_hostTime; } |
| void setTimes(uint64_t time, double hostTime) { m_timestamp = time; m_hostTime = hostTime; } |
| |
| void reset(); |
| |
| static void zeroABL(AudioBufferList&, size_t); |
| void zero(); |
| |
| protected: |
| AudioSampleBufferList(const CAAudioStreamDescription&, size_t); |
| |
| UniqueRef<CAAudioStreamDescription> m_internalFormat; |
| |
| uint64_t m_timestamp { 0 }; |
| double m_hostTime { -1 }; |
| size_t m_sampleCount { 0 }; |
| size_t m_sampleCapacity { 0 }; |
| size_t m_maxBufferSizePerChannel { 0 }; |
| size_t m_bufferListBaseSize { 0 }; |
| UniqueRef<WebAudioBufferList> m_bufferList; |
| }; |
| |
| inline size_t AudioSampleBufferList::audioBufferListSizeForStream(const CAAudioStreamDescription& description) |
| { |
| return offsetof(AudioBufferList, mBuffers) + (sizeof(AudioBuffer) * std::max<uint32_t>(1, description.numberOfChannelStreams())); |
| } |
| |
| } // namespace WebCore |
| |
| #endif // ENABLE(MEDIA_STREAM) |