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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* Copyright (c) 2011, The WebRTC project authors. All rights reserved.
* Copyright (c) 2014, Mozilla
*
* 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 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
* HOLDER 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 GMP_VIDEO_FRAME_I420_h_
#define GMP_VIDEO_FRAME_I420_h_
#include "gmp-errors.h"
#include "gmp-video-frame.h"
#include "gmp-video-plane.h"
#include <stdint.h>
enum GMPPlaneType {
kGMPYPlane = 0,
kGMPUPlane = 1,
kGMPVPlane = 2,
kGMPNumOfPlanes = 3
};
// The implementation backing this interface uses shared memory for the
// buffer(s). This means it can only be used by the "owning" process.
// At first the process which created the object owns it. When the object
// is passed to an interface the creator loses ownership and must Destroy()
// the object. Further attempts to use it may fail due to not being able to
// access the underlying buffer(s).
//
// Methods that create or destroy shared memory must be called on the main
// thread. They are marked below.
class GMPVideoi420Frame : public GMPVideoFrame {
public:
// MAIN THREAD ONLY
// CreateEmptyFrame: Sets frame dimensions and allocates buffers based
// on set dimensions - height and plane stride.
// If required size is bigger than the allocated one, new buffers of adequate
// size will be allocated.
virtual GMPErr CreateEmptyFrame(int32_t aWidth, int32_t aHeight,
int32_t aStride_y, int32_t aStride_u, int32_t aStride_v) = 0;
// MAIN THREAD ONLY
// CreateFrame: Sets the frame's members and buffers. If required size is
// bigger than allocated one, new buffers of adequate size will be allocated.
virtual GMPErr CreateFrame(int32_t aSize_y, const uint8_t* aBuffer_y,
int32_t aSize_u, const uint8_t* aBuffer_u,
int32_t aSize_v, const uint8_t* aBuffer_v,
int32_t aWidth, int32_t aHeight,
int32_t aStride_y, int32_t aStride_u, int32_t aStride_v) = 0;
// MAIN THREAD ONLY
// Copy frame: If required size is bigger than allocated one, new buffers of
// adequate size will be allocated.
virtual GMPErr CopyFrame(const GMPVideoi420Frame& aVideoFrame) = 0;
// Swap Frame.
virtual void SwapFrame(GMPVideoi420Frame* aVideoFrame) = 0;
// Get pointer to buffer per plane.
virtual uint8_t* Buffer(GMPPlaneType aType) = 0;
// Overloading with const.
virtual const uint8_t* Buffer(GMPPlaneType aType) const = 0;
// Get allocated size per plane.
virtual int32_t AllocatedSize(GMPPlaneType aType) const = 0;
// Get allocated stride per plane.
virtual int32_t Stride(GMPPlaneType aType) const = 0;
// Set frame width.
virtual GMPErr SetWidth(int32_t aWidth) = 0;
// Set frame height.
virtual GMPErr SetHeight(int32_t aHeight) = 0;
// Get frame width.
virtual int32_t Width() const = 0;
// Get frame height.
virtual int32_t Height() const = 0;
// Set frame timestamp (microseconds)
virtual void SetTimestamp(uint64_t aTimestamp) = 0;
// Get frame timestamp (microseconds)
virtual uint64_t Timestamp() const = 0;
// Set frame duration (microseconds)
// NOTE: next-frame's Timestamp() != this-frame's TimeStamp()+Duration()
// depending on rounding to avoid having to track roundoff errors
// and dropped/missing frames(!) (which may leave a large gap)
virtual void SetDuration(uint64_t aDuration) = 0;
// Get frame duration (microseconds)
virtual uint64_t Duration() const = 0;
// Return true if underlying plane buffers are of zero size, false if not.
virtual bool IsZeroSize() const = 0;
// Reset underlying plane buffers sizes to 0. This function doesn't clear memory.
virtual void ResetSize() = 0;
};
#endif // GMP_VIDEO_FRAME_I420_h_
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