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82 lines
3.0 KiB
C++
82 lines
3.0 KiB
C++
// Copyright (c) 2010 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef MEDIA_BASE_YUV_CONVERT_H_
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#define MEDIA_BASE_YUV_CONVERT_H_
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#include "chromium_types.h"
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#include "gfxCore.h"
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namespace mozilla {
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namespace gfx {
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// Type of YUV surface.
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// The value of these enums matter as they are used to shift vertical indices.
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enum YUVType {
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YV12 = 0, // YV12 is half width and half height chroma channels.
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YV16 = 1, // YV16 is half width and full height chroma channels.
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YV24 = 2 // YV24 is full width and full height chroma channels.
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};
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// Mirror means flip the image horizontally, as in looking in a mirror.
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// Rotate happens after mirroring.
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enum Rotate {
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ROTATE_0, // Rotation off.
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ROTATE_90, // Rotate clockwise.
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ROTATE_180, // Rotate upside down.
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ROTATE_270, // Rotate counter clockwise.
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MIRROR_ROTATE_0, // Mirror horizontally.
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MIRROR_ROTATE_90, // Mirror then Rotate clockwise.
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MIRROR_ROTATE_180, // Mirror vertically.
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MIRROR_ROTATE_270 // Transpose.
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};
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// Filter affects how scaling looks.
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enum ScaleFilter {
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FILTER_NONE = 0, // No filter (point sampled).
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FILTER_BILINEAR_H = 1, // Bilinear horizontal filter.
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FILTER_BILINEAR_V = 2, // Bilinear vertical filter.
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FILTER_BILINEAR = 3 // Bilinear filter.
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};
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NS_GFX_(YUVType) TypeFromSize(int ywidth, int yheight, int cbcrwidth, int cbcrheight);
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// Convert a frame of YUV to 32 bit ARGB.
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// Pass in YV16/YV12 depending on source format
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NS_GFX_(void) ConvertYCbCrToRGB32(const uint8* yplane,
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const uint8* uplane,
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const uint8* vplane,
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uint8* rgbframe,
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int pic_x,
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int pic_y,
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int pic_width,
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int pic_height,
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int ystride,
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int uvstride,
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int rgbstride,
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YUVType yuv_type);
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// Scale a frame of YUV to 32 bit ARGB.
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// Supports rotation and mirroring.
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NS_GFX_(void) ScaleYCbCrToRGB32(const uint8* yplane,
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const uint8* uplane,
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const uint8* vplane,
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uint8* rgbframe,
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int source_width,
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int source_height,
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int width,
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int height,
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int ystride,
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int uvstride,
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int rgbstride,
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YUVType yuv_type,
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Rotate view_rotate,
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ScaleFilter filter);
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} // namespace gfx
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} // namespace mozilla
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#endif // MEDIA_BASE_YUV_CONVERT_H_
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