1// Copyright 2013 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#ifndef MEDIA_BLINK_WEBSOURCEBUFFER_IMPL_H_ 6#define MEDIA_BLINK_WEBSOURCEBUFFER_IMPL_H_ 7 8#include <string> 9 10#include "base/basictypes.h" 11#include "base/compiler_specific.h" 12#include "base/time/time.h" 13#include "third_party/WebKit/public/platform/WebSourceBuffer.h" 14 15namespace media { 16class ChunkDemuxer; 17 18class WebSourceBufferImpl : public blink::WebSourceBuffer { 19 public: 20 WebSourceBufferImpl(const std::string& id, ChunkDemuxer* demuxer); 21 virtual ~WebSourceBufferImpl(); 22 23 // blink::WebSourceBuffer implementation. 24 virtual void setClient(blink::WebSourceBufferClient* client); 25 virtual bool setMode(AppendMode mode); 26 virtual blink::WebTimeRanges buffered(); 27 virtual void append( 28 const unsigned char* data, 29 unsigned length, 30 double* timestamp_offset); 31 virtual void abort(); 32 virtual void remove(double start, double end); 33 virtual bool setTimestampOffset(double offset); 34 virtual void setAppendWindowStart(double start); 35 virtual void setAppendWindowEnd(double end); 36 virtual void removedFromMediaSource(); 37 38 private: 39 // Demuxer callback handler to process an initialization segment received 40 // during an append() call. 41 void InitSegmentReceived(); 42 43 std::string id_; 44 ChunkDemuxer* demuxer_; // Owned by WebMediaPlayerImpl. 45 46 blink::WebSourceBufferClient* client_; 47 48 // Controls the offset applied to timestamps when processing appended media 49 // segments. It is initially 0, which indicates that no offset is being 50 // applied. Both setTimestampOffset() and append() may update this value. 51 base::TimeDelta timestamp_offset_; 52 53 base::TimeDelta append_window_start_; 54 base::TimeDelta append_window_end_; 55 56 DISALLOW_COPY_AND_ASSIGN(WebSourceBufferImpl); 57}; 58 59} // namespace media 60 61#endif // MEDIA_BLINK_WEBSOURCEBUFFER_IMPL_H_ 62