public/platform/WebSourceBuffer.h

/*
 * Copyright (C) 2013 Google Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions are
 * met:
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 * notice, this list of conditions and the following disclaimer.
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 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
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 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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 */

#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;

    // 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 abort() = 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