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// Copyright (c) 2010 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.
// Defines the input buffer object for the video decoder. This provides
// the interface needed by the video decoder to read input data.
//
// This object is implemened using system memory.
#ifndef MEDIA_OMX_OMX_INPUT_BUFFER_H_
#define MEDIA_OMX_OMX_INPUT_BUFFER_H_
#include "base/basictypes.h"
#include "base/scoped_ptr.h"
#include "media/base/buffers.h"
namespace media {
class OmxInputBuffer : public Buffer {
public:
// Creates an empty input buffer.
OmxInputBuffer();
// Creates an input buffer given |data| and |size|.
// After construction, this object will be given the ownership of
// |data| and is responsible for deleting it.
OmxInputBuffer(uint8* data, int size);
virtual ~OmxInputBuffer();
// Read from the this buffer into |data| with the maximum |size| bytes.
// Returns number of bytes read. If a read is successful, the number
// of used bytes will advances accordingly.
// Returns a negative number on error.
int Read(uint8* data, int size);
// Returns true if this buffer is used.
bool Used();
private:
virtual const uint8* GetData() const { return data_.get(); }
virtual size_t GetDataSize() const { return size_; }
scoped_array<uint8> data_;
int size_;
int used_;
DISALLOW_COPY_AND_ASSIGN(OmxInputBuffer);
};
} // namespace media
#endif // MEDIA_OMX_OMX_INPUT_BUFFER_H_
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