1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/ycbcr/yuv_convert.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,81 @@
1.4 +// Copyright (c) 2010 The Chromium Authors. All rights reserved.
1.5 +// Use of this source code is governed by a BSD-style license that can be
1.6 +// found in the LICENSE file.
1.7 +
1.8 +#ifndef MEDIA_BASE_YUV_CONVERT_H_
1.9 +#define MEDIA_BASE_YUV_CONVERT_H_
1.10 +
1.11 +#include "chromium_types.h"
1.12 +#include "gfxCore.h"
1.13 +
1.14 +namespace mozilla {
1.15 +
1.16 +namespace gfx {
1.17 +
1.18 +// Type of YUV surface.
1.19 +// The value of these enums matter as they are used to shift vertical indices.
1.20 +enum YUVType {
1.21 + YV12 = 0, // YV12 is half width and half height chroma channels.
1.22 + YV16 = 1, // YV16 is half width and full height chroma channels.
1.23 + YV24 = 2 // YV24 is full width and full height chroma channels.
1.24 +};
1.25 +
1.26 +// Mirror means flip the image horizontally, as in looking in a mirror.
1.27 +// Rotate happens after mirroring.
1.28 +enum Rotate {
1.29 + ROTATE_0, // Rotation off.
1.30 + ROTATE_90, // Rotate clockwise.
1.31 + ROTATE_180, // Rotate upside down.
1.32 + ROTATE_270, // Rotate counter clockwise.
1.33 + MIRROR_ROTATE_0, // Mirror horizontally.
1.34 + MIRROR_ROTATE_90, // Mirror then Rotate clockwise.
1.35 + MIRROR_ROTATE_180, // Mirror vertically.
1.36 + MIRROR_ROTATE_270 // Transpose.
1.37 +};
1.38 +
1.39 +// Filter affects how scaling looks.
1.40 +enum ScaleFilter {
1.41 + FILTER_NONE = 0, // No filter (point sampled).
1.42 + FILTER_BILINEAR_H = 1, // Bilinear horizontal filter.
1.43 + FILTER_BILINEAR_V = 2, // Bilinear vertical filter.
1.44 + FILTER_BILINEAR = 3 // Bilinear filter.
1.45 +};
1.46 +
1.47 +NS_GFX_(YUVType) TypeFromSize(int ywidth, int yheight, int cbcrwidth, int cbcrheight);
1.48 +
1.49 +// Convert a frame of YUV to 32 bit ARGB.
1.50 +// Pass in YV16/YV12 depending on source format
1.51 +NS_GFX_(void) ConvertYCbCrToRGB32(const uint8* yplane,
1.52 + const uint8* uplane,
1.53 + const uint8* vplane,
1.54 + uint8* rgbframe,
1.55 + int pic_x,
1.56 + int pic_y,
1.57 + int pic_width,
1.58 + int pic_height,
1.59 + int ystride,
1.60 + int uvstride,
1.61 + int rgbstride,
1.62 + YUVType yuv_type);
1.63 +
1.64 +// Scale a frame of YUV to 32 bit ARGB.
1.65 +// Supports rotation and mirroring.
1.66 +NS_GFX_(void) ScaleYCbCrToRGB32(const uint8* yplane,
1.67 + const uint8* uplane,
1.68 + const uint8* vplane,
1.69 + uint8* rgbframe,
1.70 + int source_width,
1.71 + int source_height,
1.72 + int width,
1.73 + int height,
1.74 + int ystride,
1.75 + int uvstride,
1.76 + int rgbstride,
1.77 + YUVType yuv_type,
1.78 + Rotate view_rotate,
1.79 + ScaleFilter filter);
1.80 +
1.81 +} // namespace gfx
1.82 +} // namespace mozilla
1.83 +
1.84 +#endif // MEDIA_BASE_YUV_CONVERT_H_
