gfx/ycbcr/yuv_convert.h@b8a032363ba2
gfx/ycbcr/yuv_convert.h
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
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.
5 #ifndef MEDIA_BASE_YUV_CONVERT_H_
6 #define MEDIA_BASE_YUV_CONVERT_H_
8 #include "chromium_types.h"
9 #include "gfxCore.h"
11 namespace mozilla {
13 namespace gfx {
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 };
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 };
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 };
44 NS_GFX_(YUVType) TypeFromSize(int ywidth, int yheight, int cbcrwidth, int cbcrheight);
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);
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);
78 } // namespace gfx
79 } // namespace mozilla
81 #endif // MEDIA_BASE_YUV_CONVERT_H_
