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/*
* Copyright (C) 2020 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. AND ITS 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 APPLE INC. OR ITS 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 PLATFORM(COCOA)
#include <wtf/RefPtr.h>
class AudioStreamDescription;
namespace WebCore {
struct AudioInfo;
WEBCORE_EXPORT bool isVorbisDecoderAvailable();
WEBCORE_EXPORT bool registerVorbisDecoderIfNeeded();
RefPtr<AudioInfo> createVorbisAudioInfo(size_t, const void*);
struct OpusCookieContents {
uint8_t version { 0 };
uint8_t channelCount { 0 };
uint16_t preSkip { 0 };
uint32_t sampleRate { 0 };
int16_t outputGain { 0 };
uint8_t mappingFamily { 0 };
uint8_t config { 0 };
Seconds frameDuration { 0_s };
int32_t bandwidth { 0 };
uint8_t framesPerPacket { 0 };
bool isVBR { false };
bool hasPadding { false };
};
WEBCORE_EXPORT bool isOpusDecoderAvailable();
WEBCORE_EXPORT bool registerOpusDecoderIfNeeded();
static constexpr size_t kOpusHeaderSize = 19;
static constexpr size_t kOpusMinimumFrameDataSize = 2;
bool parseOpusPrivateData(size_t privateDataSize, const void* privateData, size_t frameDataSize, const void* frameData, OpusCookieContents&);
RefPtr<AudioInfo> createOpusAudioInfo(const OpusCookieContents&);
}
#endif // && PLATFORM(COCOA)