src/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 - (int32_t)transportType;
  66
  67 @end
  68
  69 // Originally AVCaptureDeviceFormat and coming from AVCaptureDevice.h.
  70 MEDIA_EXPORT
  71 @interface CrAVCaptureDeviceFormat : NSObject
  72
  73 - (CoreMediaGlue::CMFormatDescriptionRef)formatDescription;
  74 - (NSArray*)videoSupportedFrameRateRanges;
  75
  76 @end
  77
  78 // Originally AVFrameRateRange and coming from AVCaptureDevice.h.
  79 MEDIA_EXPORT
  80 @interface CrAVFrameRateRange : NSObject
  81
  82 - (Float64)maxFrameRate;
  83
  84 @end
  85
  86 MEDIA_EXPORT
  87 @interface CrAVCaptureInput  // Originally from AVCaptureInput.h.
  88 @end
  89
  90 MEDIA_EXPORT
  91 @interface CrAVCaptureOutput  // Originally from AVCaptureOutput.h.
  92 @end
  93
  94 // Originally AVCaptureSession and coming from AVCaptureSession.h.
  95 MEDIA_EXPORT
  96 @interface CrAVCaptureSession : NSObject
  97
  98 - (void)release;
  99 - (void)addInput:(CrAVCaptureInput*)input;
 100 - (void)removeInput:(CrAVCaptureInput*)input;
 101 - (void)addOutput:(CrAVCaptureOutput*)output;
 102 - (void)removeOutput:(CrAVCaptureOutput*)output;
 103 - (BOOL)isRunning;
 104 - (void)startRunning;
 105 - (void)stopRunning;
 106
 107 @end
 108
 109 // Originally AVCaptureConnection and coming from AVCaptureSession.h.
 110 MEDIA_EXPORT
 111 @interface CrAVCaptureConnection : NSObject
 112
 113 - (BOOL)isVideoMinFrameDurationSupported;
 114 - (void)setVideoMinFrameDuration:(CoreMediaGlue::CMTime)minFrameRate;
 115 - (BOOL)isVideoMaxFrameDurationSupported;
 116 - (void)setVideoMaxFrameDuration:(CoreMediaGlue::CMTime)maxFrameRate;
 117
 118 @end
 119
 120 // Originally AVCaptureDeviceInput and coming from AVCaptureInput.h.
 121 MEDIA_EXPORT
 122 @interface CrAVCaptureDeviceInput : CrAVCaptureInput
 123
 124 @end
 125
 126 // Originally AVCaptureVideoDataOutputSampleBufferDelegate from
 127 // AVCaptureOutput.h.
 128 @protocol CrAVCaptureVideoDataOutputSampleBufferDelegate <NSObject>
 129
 130 @optional
 131
 132 - (void)captureOutput:(CrAVCaptureOutput*)captureOutput
 133 didOutputSampleBuffer:(CoreMediaGlue::CMSampleBufferRef)sampleBuffer
 134        fromConnection:(CrAVCaptureConnection*)connection;
 135
 136 @end
 137
 138 // Originally AVCaptureVideoDataOutput and coming from AVCaptureOutput.h.
 139 MEDIA_EXPORT
 140 @interface CrAVCaptureVideoDataOutput : CrAVCaptureOutput
 141
 142 - (oneway void)release;
 143 - (void)setSampleBufferDelegate:(id)sampleBufferDelegate
 144                           queue:(dispatch_queue_t)sampleBufferCallbackQueue;
 145
 146 - (void)setVideoSettings:(NSDictionary*)videoSettings;
 147 - (NSDictionary*)videoSettings;
 148 - (CrAVCaptureConnection*)connectionWithMediaType:(NSString*)mediaType;
 149
 150 @end
 151
 152 // Class to provide access to class methods of AVCaptureDevice.
 153 MEDIA_EXPORT
 154 @interface AVCaptureDeviceGlue : NSObject
 155
 156 + (NSArray*)devices;
 157
 158 + (CrAVCaptureDevice*)deviceWithUniqueID:(NSString*)deviceUniqueID;
 159
 160 @end
 161
 162 // Class to provide access to class methods of AVCaptureDeviceInput.
 163 MEDIA_EXPORT
 164 @interface AVCaptureDeviceInputGlue : NSObject
 165
 166 + (CrAVCaptureDeviceInput*)deviceInputWithDevice:(CrAVCaptureDevice*)device
 167                                            error:(NSError**)outError;
 168
 169 @end
 170
 171 #endif  // MEDIA_VIDEO_CAPTURE_MAC_AVFOUNDATION_GLUE_H_