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/*
* Copyright (C) 2013 Google 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
* OWNER OR 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.
*/
#ifndef WebSourceBuffer_h
#define WebSourceBuffer_h
#include "WebTimeRange.h"
namespace blink {
class WebSourceBufferClient;
class WebSourceBuffer {
public:
enum AppendMode {
AppendModeSegments,
AppendModeSequence
};
virtual ~WebSourceBuffer() { }
// This will only be called once and only with a non-null pointer to a
// client whose ownership is not transferred to this WebSourceBuffer.
virtual void setClient(WebSourceBufferClient*) = 0;
virtual bool setMode(AppendMode) = 0;
virtual WebTimeRanges buffered() = 0;
// Run coded frame eviction/garbage collection algorithm.
// |currentPlaybackTime| is HTMLMediaElement::currentTime. The algorithm
// will try to preserve data around current playback position.
// |newDataSize| is size of new data about to be appended to SourceBuffer.
// Could be zero for appendStream if stream size is unknown in advance.
// Returns false if buffer is still full after eviction.
virtual bool evictCodedFrames(double currentPlaybackTime, size_t newDataSize) = 0;
// Appends data and runs the segment parser loop algorithm.
// The algorithm may update |*timestampOffset| if |timestampOffset| is not null.
virtual void append(const unsigned char* data, unsigned length, double* timestampOffset) = 0;
virtual void resetParserState() = 0;
virtual void remove(double start, double end) = 0;
virtual bool setTimestampOffset(double) = 0;
// Set presentation timestamp for the start of append window.
virtual void setAppendWindowStart(double) = 0;
// Set presentation timestamp for the end of append window.
virtual void setAppendWindowEnd(double) = 0;
// After this method is called, this WebSourceBuffer should never use the
// client pointer passed to setClient().
virtual void removedFromMediaSource() = 0;
};
} // namespace blink
#endif
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