| /* |
| * 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 ENABLE(MEDIA_RECORDER) && USE(AVFOUNDATION) |
| |
| #include <CoreMedia/CoreMedia.h> |
| #include <VideoToolbox/VTErrors.h> |
| #include <wtf/WorkQueue.h> |
| |
| typedef struct opaqueCMSampleBuffer *CMSampleBufferRef; |
| typedef struct OpaqueVTCompressionSession *VTCompressionSessionRef; |
| |
| namespace WebCore { |
| |
| class VideoSampleBufferCompressor { |
| WTF_MAKE_FAST_ALLOCATED; |
| public: |
| static std::unique_ptr<VideoSampleBufferCompressor> create(String mimeType, CMBufferQueueTriggerCallback, void* callbackObject); |
| ~VideoSampleBufferCompressor(); |
| |
| void setBitsPerSecond(unsigned); |
| void finish(); |
| void addSampleBuffer(CMSampleBufferRef); |
| CMSampleBufferRef getOutputSampleBuffer(); |
| RetainPtr<CMSampleBufferRef> takeOutputSampleBuffer(); |
| |
| unsigned bitRate() const; |
| |
| private: |
| enum class Profile { Baseline, Main, High }; |
| VideoSampleBufferCompressor(CMVideoCodecType, Profile); |
| |
| bool initialize(CMBufferQueueTriggerCallback, void* callbackObject); |
| |
| void processSampleBuffer(CMSampleBufferRef); |
| bool initCompressionSession(CMVideoFormatDescriptionRef); |
| CFStringRef vtProfileLevel() const; |
| |
| static void videoCompressionCallback(void *refCon, void*, OSStatus, VTEncodeInfoFlags, CMSampleBufferRef); |
| |
| Ref<WorkQueue> m_serialDispatchQueue; |
| CMVideoCodecType m_outputCodecType { kCMVideoCodecType_H264 }; |
| |
| RetainPtr<CMBufferQueueRef> m_outputBufferQueue; |
| RetainPtr<VTCompressionSessionRef> m_vtSession; |
| |
| bool m_isEncoding { false }; |
| float m_maxKeyFrameIntervalDuration { 2.0 }; |
| unsigned m_expectedFrameRate { 30 }; |
| std::optional<unsigned> m_outputBitRate; |
| Profile m_profile; |
| }; |
| |
| } |
| |
| #endif |