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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROMECAST_MEDIA_CMA_BASE_DECODER_BUFFER_BASE_H_
#define CHROMECAST_MEDIA_CMA_BASE_DECODER_BUFFER_BASE_H_
#include "base/basictypes.h"
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/time/time.h"
#include "chromecast/public/media/stream_id.h"
namespace chromecast {
namespace media {
class CastDecryptConfig;
// DecoderBufferBase exposes only the properties of an audio/video buffer.
// The way a DecoderBufferBase is created and organized in memory
// is left as a detail of the implementation of derived classes.
class DecoderBufferBase
: public base::RefCountedThreadSafe<DecoderBufferBase> {
public:
DecoderBufferBase() {}
// Returns the stream id of this decoder buffer belonging to. it's optional
// and default value is kPrimary.
virtual StreamId stream_id() const = 0;
// Returns the PTS of the frame.
virtual base::TimeDelta timestamp() const = 0;
// Sets the PTS of the frame.
virtual void set_timestamp(base::TimeDelta timestamp) = 0;
// Gets the frame data.
virtual const uint8* data() const = 0;
virtual uint8* writable_data() const = 0;
// Returns the size of the frame in bytes.
virtual size_t data_size() const = 0;
// Returns the decrypt configuration.
// Returns NULL if the buffer has no decrypt info.
virtual const CastDecryptConfig* decrypt_config() const = 0;
// Indicate if this is a special frame that indicates the end of the stream.
// If true, functions to access the frame content cannot be called.
virtual bool end_of_stream() const = 0;
protected:
friend class base::RefCountedThreadSafe<DecoderBufferBase>;
virtual ~DecoderBufferBase() {}
private:
DISALLOW_COPY_AND_ASSIGN(DecoderBufferBase);
};
} // namespace media
} // namespace chromecast
#endif // CHROMECAST_MEDIA_CMA_BASE_DECODER_BUFFER_BASE_H_
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