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// Copyright (c) 2012 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.
// Note: ported from Chromium commit head: 602bc8fa60fa
// Note: only necessary functions are ported.
// Note: some OS-specific defines have been removed
// Note: WrapExternalSharedMemory() has been removed in Chromium, but is still
// present here. Porting the code to a newer version of VideoFrame is not
// useful, as this is only a temporary step and all usage of VideoFrame will
// be removed.
#ifndef VIDEO_FRAME_H_
#define VIDEO_FRAME_H_
#include <stddef.h>
#include <stdint.h>
#include <memory>
#include <string>
#include <utility>
#include <vector>
#include "base/memory/ref_counted.h"
#include "ui/Size.h"
#include "video_frame_layout.h"
#include "video_pixel_format.h"
namespace media {
class VideoFrame : public base::RefCountedThreadSafe<VideoFrame> {
public:
enum {
kMaxPlanes = 4,
kYPlane = 0,
kARGBPlane = kYPlane,
kUPlane = 1,
kUVPlane = kUPlane,
kVPlane = 2,
kAPlane = 3,
};
static size_t NumPlanes(VideoPixelFormat format);
// Returns the required allocation size for a (tightly packed) frame of the
// given coded size and format.
static size_t AllocationSize(VideoPixelFormat format, const android::ui::Size& coded_size);
// Returns the plane Size (in bytes) for a plane of the given coded size
// and format.
static android::ui::Size PlaneSize(VideoPixelFormat format,
size_t plane,
const android::ui::Size& coded_size);
// Returns horizontal bits per pixel for given |plane| and |format|.
static int PlaneHorizontalBitsPerPixel(VideoPixelFormat format, size_t plane);
// Returns bits per pixel for given |plane| and |format|.
static int PlaneBitsPerPixel(VideoPixelFormat format, size_t plane);
// Returns the number of bytes per element for given |plane| and |format|.
static int BytesPerElement(VideoPixelFormat format, size_t plane);
// Returns true if |plane| is a valid plane index for the given |format|.
static bool IsValidPlane(size_t plane, VideoPixelFormat format);
// Returns true if |plane| is a valid plane index for the given |format|.
static bool IsValidPlane(VideoPixelFormat format, size_t plane);
// Returns the pixel size of each subsample for a given |plane| and |format|.
// E.g. 2x2 for the U-plane in PIXEL_FORMAT_I420.
static android::ui::Size SampleSize(VideoPixelFormat format, size_t plane);
};
} // namespace media
#endif // VIDEO_FRAME_H_
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