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1 // Copyright 2013 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_VIDEO_CAPTURE_MAC_COREMEDIA_GLUE_H_ | |
6 #define MEDIA_VIDEO_CAPTURE_MAC_COREMEDIA_GLUE_H_ | |
7 | |
8 #import <CoreVideo/CoreVideo.h> | |
9 #import <Foundation/Foundation.h> | |
10 | |
11 #include "base/basictypes.h" | |
12 #include "media/base/media_export.h" | |
13 | |
14 // CoreMedia API is only introduced in Mac OS X > 10.6, the (potential) linking | |
15 // with it has to happen in runtime. If it succeeds, subsequent clients can use | |
16 // CoreMedia via the class declared in this file, where the original naming has | |
17 // been kept as much as possible. | |
18 class MEDIA_EXPORT CoreMediaGlue { | |
19 public: | |
20 // Originally from CMTime.h | |
21 typedef int64_t CMTimeValue; | |
22 typedef int32_t CMTimeScale; | |
23 typedef int64_t CMTimeEpoch; | |
24 typedef uint32_t CMTimeFlags; | |
25 typedef struct { | |
26 CMTimeValue value; | |
27 CMTimeScale timescale; | |
28 CMTimeFlags flags; | |
29 CMTimeEpoch epoch; | |
30 } CMTime; | |
31 | |
32 // Originally from CMFormatDescription.h. | |
33 typedef const struct opaqueCMFormatDescription* CMFormatDescriptionRef; | |
34 typedef CMFormatDescriptionRef CMVideoFormatDescriptionRef; | |
35 typedef struct { | |
36 int32_t width; | |
37 int32_t height; | |
38 } CMVideoDimensions; | |
39 enum { | |
40 kCMPixelFormat_422YpCbCr8_yuvs = 'yuvs', | |
41 }; | |
42 enum { | |
43 kCMVideoCodecType_JPEG_OpenDML = 'dmb1', | |
44 }; | |
45 | |
46 // Originally from CMSampleBuffer.h. | |
47 typedef struct OpaqueCMSampleBuffer* CMSampleBufferRef; | |
48 | |
49 // Originally from CMTime.h. | |
50 static CMTime CMTimeMake(int64_t value, int32_t timescale); | |
51 | |
52 // Originally from CMSampleBuffer.h. | |
53 static CVImageBufferRef CMSampleBufferGetImageBuffer( | |
54 CMSampleBufferRef buffer); | |
55 | |
56 // Originally from CMFormatDescription.h. | |
57 static FourCharCode CMFormatDescriptionGetMediaSubType( | |
58 CMFormatDescriptionRef desc); | |
59 static CMVideoDimensions CMVideoFormatDescriptionGetDimensions( | |
60 CMVideoFormatDescriptionRef videoDesc); | |
61 | |
62 private: | |
63 DISALLOW_IMPLICIT_CONSTRUCTORS(CoreMediaGlue); | |
64 }; | |
65 | |
66 #endif // MEDIA_VIDEO_CAPTURE_MAC_COREMEDIA_GLUE_H_ | |
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