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// Copyright (c) 2009 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 MEDIA_BASE_YUV_SCALE_H_
#define MEDIA_BASE_YUV_SCALE_H_
#include "base/basictypes.h"
namespace media {
// Mirror means flip the image horizontally, as in looking in a mirror.
// Rotate happens after mirroring.
enum Rotate {
ROTATE_0, // Rotation off.
ROTATE_90, // Rotate clockwise.
ROTATE_180, // Rotate upside down.
ROTATE_270, // Rotate counter clockwise.
MIRROR_ROTATE_0, // Mirror horizontally.
MIRROR_ROTATE_90, // Mirror then Rotate clockwise.
MIRROR_ROTATE_180, // Mirror vertically.
MIRROR_ROTATE_270, // Transpose.
};
// Diagram showing origin and direction of source sampling.
// ->0 4<-
// 7 3
//
// 6 5
// ->1 2<-
// Scale a frame of YV12 (aka YUV420) to 32 bit ARGB.
void ScaleYV12ToRGB32(const uint8* yplane,
const uint8* uplane,
const uint8* vplane,
uint8* rgbframe,
int frame_width,
int frame_height,
int scaled_width,
int scaled_height,
int ystride,
int uvstride,
int rgbstride,
Rotate view_rotate);
// Scale a frame of YV16 (aka YUV422) to 32 bit ARGB.
void ScaleYV16ToRGB32(const uint8* yplane,
const uint8* uplane,
const uint8* vplane,
uint8* rgbframe,
int frame_width,
int frame_height,
int scaled_width,
int scaled_height,
int ystride,
int uvstride,
int rgbstride,
Rotate view_rotate);
} // namespace media
#endif // MEDIA_BASE_YUV_SCALE_H_
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