media/video/capture/mac/avfoundation_glue.h

   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 // AVFoundation API is only introduced in Mac OS X > 10.6, and there is only one
   6 // build of Chromium, so the (potential) linking with AVFoundation has to happen
   7 // in runtime. For this to be clean, an AVFoundationGlue class is defined to try
   8 // and load these AVFoundation system libraries. If it succeeds, subsequent
   9 // clients can use AVFoundation via the rest of the classes declared in this
  10 // file.
  11
  12 #ifndef MEDIA_VIDEO_CAPTURE_MAC_AVFOUNDATION_GLUE_H_
  13 #define MEDIA_VIDEO_CAPTURE_MAC_AVFOUNDATION_GLUE_H_
  14
  15 #import <Foundation/Foundation.h>
  16
  17 #include "base/basictypes.h"
  18 #include "media/base/media_export.h"
  19 #import "media/video/capture/mac/coremedia_glue.h"
  20
  21 class MEDIA_EXPORT AVFoundationGlue {
  22  public:
  23   // This method returns true if the OS version supports AVFoundation and the
  24   // AVFoundation bundle could be loaded correctly, or false otherwise.
  25   static bool IsAVFoundationSupported();
  26
  27   static NSBundle const* AVFoundationBundle();
  28
  29   static void* AVFoundationLibraryHandle();
  30
  31   // Originally coming from AVCaptureDevice.h but in global namespace.
  32   static NSString* AVCaptureDeviceWasConnectedNotification();
  33   static NSString* AVCaptureDeviceWasDisconnectedNotification();
  34
  35   // Originally coming from AVMediaFormat.h but in global namespace.
  36   static NSString* AVMediaTypeVideo();
  37   static NSString* AVMediaTypeAudio();
  38   static NSString* AVMediaTypeMuxed();
  39
  40   // Originally from AVCaptureSession.h but in global namespace.
  41   static NSString* AVCaptureSessionRuntimeErrorNotification();
  42   static NSString* AVCaptureSessionDidStopRunningNotification();
  43   static NSString* AVCaptureSessionErrorKey();
  44
  45   // Originally from AVVideoSettings.h but in global namespace.
  46   static NSString* AVVideoScalingModeKey();
  47   static NSString* AVVideoScalingModeResizeAspectFill();
  48
  49   static Class AVCaptureSessionClass();
  50   static Class AVCaptureVideoDataOutputClass();
  51
  52  private:
  53   DISALLOW_IMPLICIT_CONSTRUCTORS(AVFoundationGlue);
  54 };
  55
  56 // Originally AVCaptureDevice and coming from AVCaptureDevice.h
  57 MEDIA_EXPORT
  58 @interface CrAVCaptureDevice : NSObject
  59
  60 - (BOOL)hasMediaType:(NSString*)mediaType;
  61 - (NSString*)uniqueID;
  62 - (NSString*)localizedName;
  63 - (BOOL)isSuspended;
  64 - (NSArray*)formats;
  65
  66 @end
  67
  68 // Originally AVCaptureDeviceFormat and coming from AVCaptureDevice.h.
  69 MEDIA_EXPORT
  70 @interface CrAVCaptureDeviceFormat : NSObject
  71
  72 - (CoreMediaGlue::CMFormatDescriptionRef)formatDescription;
  73 - (NSArray*)videoSupportedFrameRateRanges;
  74
  75 @end
  76
  77 // Originally AVFrameRateRange and coming from AVCaptureDevice.h.
  78 MEDIA_EXPORT
  79 @interface CrAVFrameRateRange : NSObject
  80
  81 - (Float64)maxFrameRate;
  82
  83 @end
  84
  85 MEDIA_EXPORT
  86 @interface CrAVCaptureInput  // Originally from AVCaptureInput.h.
  87 @end
  88
  89 MEDIA_EXPORT
  90 @interface CrAVCaptureOutput  // Originally from AVCaptureOutput.h.
  91 @end
  92
  93 // Originally AVCaptureSession and coming from AVCaptureSession.h.
  94 MEDIA_EXPORT
  95 @interface CrAVCaptureSession : NSObject
  96
  97 - (void)release;
  98 - (void)addInput:(CrAVCaptureInput*)input;
  99 - (void)removeInput:(CrAVCaptureInput*)input;
 100 - (void)addOutput:(CrAVCaptureOutput*)output;
 101 - (void)removeOutput:(CrAVCaptureOutput*)output;
 102 - (BOOL)isRunning;
 103 - (void)startRunning;
 104 - (void)stopRunning;
 105
 106 @end
 107
 108 // Originally AVCaptureConnection and coming from AVCaptureSession.h.
 109 MEDIA_EXPORT
 110 @interface CrAVCaptureConnection : NSObject
 111
 112 - (BOOL)isVideoMinFrameDurationSupported;
 113 - (void)setVideoMinFrameDuration:(CoreMediaGlue::CMTime)minFrameRate;
 114 - (BOOL)isVideoMaxFrameDurationSupported;
 115 - (void)setVideoMaxFrameDuration:(CoreMediaGlue::CMTime)maxFrameRate;
 116
 117 @end
 118
 119 // Originally AVCaptureDeviceInput and coming from AVCaptureInput.h.
 120 MEDIA_EXPORT
 121 @interface CrAVCaptureDeviceInput : CrAVCaptureInput
 122
 123 @end
 124
 125 // Originally AVCaptureVideoDataOutputSampleBufferDelegate from
 126 // AVCaptureOutput.h.
 127 @protocol CrAVCaptureVideoDataOutputSampleBufferDelegate <NSObject>
 128
 129 @optional
 130
 131 - (void)captureOutput:(CrAVCaptureOutput*)captureOutput
 132 didOutputSampleBuffer:(CoreMediaGlue::CMSampleBufferRef)sampleBuffer
 133        fromConnection:(CrAVCaptureConnection*)connection;
 134
 135 @end
 136
 137 // Originally AVCaptureVideoDataOutput and coming from AVCaptureOutput.h.
 138 MEDIA_EXPORT
 139 @interface CrAVCaptureVideoDataOutput : CrAVCaptureOutput
 140
 141 - (oneway void)release;
 142 - (void)setSampleBufferDelegate:(id)sampleBufferDelegate
 143                           queue:(dispatch_queue_t)sampleBufferCallbackQueue;
 144
 145 - (void)setVideoSettings:(NSDictionary*)videoSettings;
 146 - (NSDictionary*)videoSettings;
 147 - (CrAVCaptureConnection*)connectionWithMediaType:(NSString*)mediaType;
 148
 149 @end
 150
 151 // Class to provide access to class methods of AVCaptureDevice.
 152 MEDIA_EXPORT
 153 @interface AVCaptureDeviceGlue : NSObject
 154
 155 + (NSArray*)devices;
 156
 157 + (CrAVCaptureDevice*)deviceWithUniqueID:(NSString*)deviceUniqueID;
 158
 159 @end
 160
 161 // Class to provide access to class methods of AVCaptureDeviceInput.
 162 MEDIA_EXPORT
 163 @interface AVCaptureDeviceInputGlue : NSObject
 164
 165 + (CrAVCaptureDeviceInput*)deviceInputWithDevice:(CrAVCaptureDevice*)device
 166                                            error:(NSError**)outError;
 167
 168 @end
 169
 170 #endif  // MEDIA_VIDEO_CAPTURE_MAC_AVFOUNDATION_GLUE_H_