media/base/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_BASE_MAC_AVFOUNDATION_GLUE_H_
  13 #define MEDIA_BASE_MAC_AVFOUNDATION_GLUE_H_
  14
  15 #import <Foundation/Foundation.h>
  16
  17 #include "base/basictypes.h"
  18 #include "media/base/mac/coremedia_glue.h"
  19 #include "media/base/media_export.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   // Originally coming from AVCaptureDevice.h but in global namespace.
  30   static NSString* AVCaptureDeviceWasConnectedNotification();
  31   static NSString* AVCaptureDeviceWasDisconnectedNotification();
  32
  33   // Originally coming from AVMediaFormat.h but in global namespace.
  34   static NSString* AVMediaTypeVideo();
  35   static NSString* AVMediaTypeAudio();
  36   static NSString* AVMediaTypeMuxed();
  37
  38   // Originally from AVCaptureSession.h but in global namespace.
  39   static NSString* AVCaptureSessionRuntimeErrorNotification();
  40   static NSString* AVCaptureSessionDidStopRunningNotification();
  41   static NSString* AVCaptureSessionErrorKey();
  42
  43   // Originally from AVVideoSettings.h but in global namespace.
  44   static NSString* AVVideoScalingModeKey();
  45   static NSString* AVVideoScalingModeResizeAspectFill();
  46
  47   static Class AVCaptureSessionClass();
  48   static Class AVCaptureVideoDataOutputClass();
  49
  50  private:
  51   DISALLOW_IMPLICIT_CONSTRUCTORS(AVFoundationGlue);
  52 };
  53
  54 // Originally AVCaptureDevice and coming from AVCaptureDevice.h
  55 MEDIA_EXPORT
  56 @interface CrAVCaptureDevice : NSObject
  57
  58 - (BOOL)hasMediaType:(NSString*)mediaType;
  59 - (NSString*)uniqueID;
  60 - (NSString*)localizedName;
  61 - (BOOL)isSuspended;
  62 - (NSArray*)formats;
  63 - (int32_t)transportType;
  64
  65 @end
  66
  67 // Originally AVCaptureDeviceFormat and coming from AVCaptureDevice.h.
  68 MEDIA_EXPORT
  69 @interface CrAVCaptureDeviceFormat : NSObject
  70
  71 - (CoreMediaGlue::CMFormatDescriptionRef)formatDescription;
  72 - (NSArray*)videoSupportedFrameRateRanges;
  73
  74 @end
  75
  76 // Originally AVFrameRateRange and coming from AVCaptureDevice.h.
  77 MEDIA_EXPORT
  78 @interface CrAVFrameRateRange : NSObject
  79
  80 - (Float64)maxFrameRate;
  81
  82 @end
  83
  84 MEDIA_EXPORT
  85 @interface CrAVCaptureInput  // Originally from AVCaptureInput.h.
  86 @end
  87
  88 MEDIA_EXPORT
  89 @interface CrAVCaptureOutput  // Originally from AVCaptureOutput.h.
  90 @end
  91
  92 // Originally AVCaptureSession and coming from AVCaptureSession.h.
  93 MEDIA_EXPORT
  94 @interface CrAVCaptureSession : NSObject
  95
  96 - (void)release;
  97 - (void)addInput:(CrAVCaptureInput*)input;
  98 - (void)removeInput:(CrAVCaptureInput*)input;
  99 - (void)addOutput:(CrAVCaptureOutput*)output;
 100 - (void)removeOutput:(CrAVCaptureOutput*)output;
 101 - (BOOL)isRunning;
 102 - (void)startRunning;
 103 - (void)stopRunning;
 104
 105 @end
 106
 107 // Originally AVCaptureConnection and coming from AVCaptureSession.h.
 108 MEDIA_EXPORT
 109 @interface CrAVCaptureConnection : NSObject
 110
 111 - (BOOL)isVideoMinFrameDurationSupported;
 112 - (void)setVideoMinFrameDuration:(CoreMediaGlue::CMTime)minFrameRate;
 113 - (BOOL)isVideoMaxFrameDurationSupported;
 114 - (void)setVideoMaxFrameDuration:(CoreMediaGlue::CMTime)maxFrameRate;
 115
 116 @end
 117
 118 // Originally AVCaptureDeviceInput and coming from AVCaptureInput.h.
 119 MEDIA_EXPORT
 120 @interface CrAVCaptureDeviceInput : CrAVCaptureInput
 121
 122 @end
 123
 124 // Originally AVCaptureVideoDataOutputSampleBufferDelegate from
 125 // AVCaptureOutput.h.
 126 @protocol CrAVCaptureVideoDataOutputSampleBufferDelegate <NSObject>
 127
 128 @optional
 129
 130 - (void)captureOutput:(CrAVCaptureOutput*)captureOutput
 131 didOutputSampleBuffer:(CoreMediaGlue::CMSampleBufferRef)sampleBuffer
 132        fromConnection:(CrAVCaptureConnection*)connection;
 133
 134 @end
 135
 136 // Originally AVCaptureVideoDataOutput and coming from AVCaptureOutput.h.
 137 MEDIA_EXPORT
 138 @interface CrAVCaptureVideoDataOutput : CrAVCaptureOutput
 139
 140 - (oneway void)release;
 141 - (void)setSampleBufferDelegate:(id)sampleBufferDelegate
 142                           queue:(dispatch_queue_t)sampleBufferCallbackQueue;
 143
 144 - (void)setAlwaysDiscardsLateVideoFrames:(BOOL)flag;
 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_BASE_MAC_AVFOUNDATION_GLUE_H_