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comparison: gfx/ycbcr/yuv_convert.h
gfx/ycbcr/yuv_convert.h
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| 1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #ifndef MEDIA_BASE_YUV_CONVERT_H_ | |
| 6 #define MEDIA_BASE_YUV_CONVERT_H_ | |
| 7 | |
| 8 #include "chromium_types.h" | |
| 9 #include "gfxCore.h" | |
| 10 | |
| 11 namespace mozilla { | |
| 12 | |
| 13 namespace gfx { | |
| 14 | |
| 15 // Type of YUV surface. | |
| 16 // The value of these enums matter as they are used to shift vertical indices. | |
| 17 enum YUVType { | |
| 18 YV12 = 0, // YV12 is half width and half height chroma channels. | |
| 19 YV16 = 1, // YV16 is half width and full height chroma channels. | |
| 20 YV24 = 2 // YV24 is full width and full height chroma channels. | |
| 21 }; | |
| 22 | |
| 23 // Mirror means flip the image horizontally, as in looking in a mirror. | |
| 24 // Rotate happens after mirroring. | |
| 25 enum Rotate { | |
| 26 ROTATE_0, // Rotation off. | |
| 27 ROTATE_90, // Rotate clockwise. | |
| 28 ROTATE_180, // Rotate upside down. | |
| 29 ROTATE_270, // Rotate counter clockwise. | |
| 30 MIRROR_ROTATE_0, // Mirror horizontally. | |
| 31 MIRROR_ROTATE_90, // Mirror then Rotate clockwise. | |
| 32 MIRROR_ROTATE_180, // Mirror vertically. | |
| 33 MIRROR_ROTATE_270 // Transpose. | |
| 34 }; | |
| 35 | |
| 36 // Filter affects how scaling looks. | |
| 37 enum ScaleFilter { | |
| 38 FILTER_NONE = 0, // No filter (point sampled). | |
| 39 FILTER_BILINEAR_H = 1, // Bilinear horizontal filter. | |
| 40 FILTER_BILINEAR_V = 2, // Bilinear vertical filter. | |
| 41 FILTER_BILINEAR = 3 // Bilinear filter. | |
| 42 }; | |
| 43 | |
| 44 NS_GFX_(YUVType) TypeFromSize(int ywidth, int yheight, int cbcrwidth, int cbcrheight); | |
| 45 | |
| 46 // Convert a frame of YUV to 32 bit ARGB. | |
| 47 // Pass in YV16/YV12 depending on source format | |
| 48 NS_GFX_(void) ConvertYCbCrToRGB32(const uint8* yplane, | |
| 49 const uint8* uplane, | |
| 50 const uint8* vplane, | |
| 51 uint8* rgbframe, | |
| 52 int pic_x, | |
| 53 int pic_y, | |
| 54 int pic_width, | |
| 55 int pic_height, | |
| 56 int ystride, | |
| 57 int uvstride, | |
| 58 int rgbstride, | |
| 59 YUVType yuv_type); | |
| 60 | |
| 61 // Scale a frame of YUV to 32 bit ARGB. | |
| 62 // Supports rotation and mirroring. | |
| 63 NS_GFX_(void) ScaleYCbCrToRGB32(const uint8* yplane, | |
| 64 const uint8* uplane, | |
| 65 const uint8* vplane, | |
| 66 uint8* rgbframe, | |
| 67 int source_width, | |
| 68 int source_height, | |
| 69 int width, | |
| 70 int height, | |
| 71 int ystride, | |
| 72 int uvstride, | |
| 73 int rgbstride, | |
| 74 YUVType yuv_type, | |
| 75 Rotate view_rotate, | |
| 76 ScaleFilter filter); | |
| 77 | |
| 78 } // namespace gfx | |
| 79 } // namespace mozilla | |
| 80 | |
| 81 #endif // MEDIA_BASE_YUV_CONVERT_H_ |
