72 lines
3.2 KiB
C++
72 lines
3.2 KiB
C++
/*
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* Copyright (C) 2020 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "MediaUtilities.h"
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#include "AudioStreamDescription.h"
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#include "WebAudioBufferList.h"
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#include <wtf/SoftLinking.h>
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#include <pal/cf/CoreMediaSoftLink.h>
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namespace WebCore {
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RetainPtr<CMFormatDescriptionRef> createAudioFormatDescription(const AudioStreamDescription& description, size_t magicCookieSize, const void* magicCookie)
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{
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auto basicDescription = WTF::get<const AudioStreamBasicDescription*>(description.platformDescription().description);
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CMFormatDescriptionRef format = nullptr;
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auto error = PAL::CMAudioFormatDescriptionCreate(kCFAllocatorDefault, basicDescription, 0, nullptr, magicCookieSize, magicCookie, nullptr, &format);
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if (error) {
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LOG_ERROR("createAudioFormatDescription failed with %d", error);
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return nullptr;
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}
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return adoptCF(format);
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}
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RetainPtr<CMSampleBufferRef> createAudioSampleBuffer(const PlatformAudioData& data, const AudioStreamDescription& description, CMTime time, size_t sampleCount)
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{
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// FIXME: check if we can reuse the format for multiple sample buffers.
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auto format = createAudioFormatDescription(description);
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if (!format)
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return nullptr;
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CMSampleBufferRef sampleBuffer = nullptr;
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auto error = PAL::CMAudioSampleBufferCreateWithPacketDescriptions(kCFAllocatorDefault, nullptr, false, nullptr, nullptr, format.get(), sampleCount, time, nullptr, &sampleBuffer);
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if (error) {
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LOG_ERROR("createAudioSampleBuffer with packet descriptions failed - %d", error);
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return nullptr;
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}
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auto buffer = adoptCF(sampleBuffer);
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error = PAL::CMSampleBufferSetDataBufferFromAudioBufferList(buffer.get(), kCFAllocatorDefault, kCFAllocatorDefault, 0, downcast<WebAudioBufferList>(data).list());
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if (error) {
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LOG_ERROR("createAudioSampleBuffer from audio buffer list failed - %d", error);
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return nullptr;
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}
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return buffer;
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}
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} // namespace WebCore
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