content/renderer/media/websourcebuffer_impl.h

   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 CONTENT_RENDERER_MEDIA_WEBSOURCEBUFFER_IMPL_H_
   6 #define CONTENT_RENDERER_MEDIA_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
  15 namespace media {
  16 class ChunkDemuxer;
  17 }
  18
  19 namespace content {
  20
  21 class WebSourceBufferImpl : public blink::WebSourceBuffer {
  22  public:
  23   WebSourceBufferImpl(const std::string& id, media::ChunkDemuxer* demuxer);
  24   virtual ~WebSourceBufferImpl();
  25
  26   // blink::WebSourceBuffer implementation.
  27   virtual bool setMode(AppendMode mode);
  28   virtual blink::WebTimeRanges buffered();
  29   virtual void append(
  30       const unsigned char* data,
  31       unsigned length,
  32       double* timestamp_offset);
  33   virtual void abort();
  34   virtual void remove(double start, double end);
  35   virtual bool setTimestampOffset(double offset);
  36   virtual void setAppendWindowStart(double start);
  37   virtual void setAppendWindowEnd(double end);
  38   virtual void removedFromMediaSource();
  39
  40  private:
  41   std::string id_;
  42   media::ChunkDemuxer* demuxer_;  // Owned by WebMediaPlayerImpl.
  43
  44   // Controls the offset applied to timestamps when processing appended media
  45   // segments. It is initially 0, which indicates that no offset is being
  46   // applied. Both setTimestampOffset() and append() may update this value.
  47   base::TimeDelta timestamp_offset_;
  48
  49   base::TimeDelta append_window_start_;
  50   base::TimeDelta append_window_end_;
  51
  52   DISALLOW_COPY_AND_ASSIGN(WebSourceBufferImpl);
  53 };
  54
  55 }  // namespace content
  56
  57 #endif  // CONTENT_RENDERER_MEDIA_WEBSOURCEBUFFER_IMPL_H_