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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// AVFoundation API is only introduced in Mac OS X > 10.6, and there is only one
// build of Chromium, so the (potential) linking with AVFoundation has to happen
// in runtime. For this to be clean, an AVFoundationGlue class is defined to try
// and load these AVFoundation system libraries. If it succeeds, subsequent
// clients can use AVFoundation via the rest of the classes declared in this
// file.
#ifndef MEDIA_BASE_MAC_AVFOUNDATION_GLUE_H_
#define MEDIA_BASE_MAC_AVFOUNDATION_GLUE_H_
#if defined(__OBJC__)
#import <Foundation/Foundation.h>
#endif // defined(__OBJC__)
#include <stdint.h>
#include "base/macros.h"
#include "media/base/mac/coremedia_glue.h"
#include "media/base/media_export.h"
class MEDIA_EXPORT AVFoundationGlue {
public:
// Must be called on the UI thread prior to attempting to use any other
// AVFoundation methods.
static void InitializeAVFoundation();
// This method returns true if the OS version supports AVFoundation and the
// AVFoundation bundle could be loaded correctly, or false otherwise.
static bool IsAVFoundationSupported();
#if defined(__OBJC__)
static NSBundle const* AVFoundationBundle();
// Originally coming from AVCaptureDevice.h but in global namespace.
static NSString* AVCaptureDeviceWasConnectedNotification();
static NSString* AVCaptureDeviceWasDisconnectedNotification();
// Originally coming from AVMediaFormat.h but in global namespace.
static NSString* AVMediaTypeVideo();
static NSString* AVMediaTypeAudio();
static NSString* AVMediaTypeMuxed();
// Originally from AVCaptureSession.h but in global namespace.
static NSString* AVCaptureSessionRuntimeErrorNotification();
static NSString* AVCaptureSessionDidStopRunningNotification();
static NSString* AVCaptureSessionErrorKey();
// Originally from AVVideoSettings.h but in global namespace.
static NSString* AVVideoScalingModeKey();
static NSString* AVVideoScalingModeResizeAspectFill();
static Class AVCaptureSessionClass();
static Class AVCaptureVideoDataOutputClass();
#endif // defined(__OBJC__)
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(AVFoundationGlue);
};
#if defined(__OBJC__)
// Originally AVCaptureDevice and coming from AVCaptureDevice.h
MEDIA_EXPORT
@interface CrAVCaptureDevice : NSObject
- (BOOL)hasMediaType:(NSString*)mediaType;
- (NSString*)uniqueID;
- (NSString*)localizedName;
- (BOOL)isSuspended;
- (NSArray*)formats;
- (int32_t)transportType;
@end
// Originally AVCaptureDeviceFormat and coming from AVCaptureDevice.h.
MEDIA_EXPORT
@interface CrAVCaptureDeviceFormat : NSObject
- (CoreMediaGlue::CMFormatDescriptionRef)formatDescription;
- (NSArray*)videoSupportedFrameRateRanges;
@end
// Originally AVFrameRateRange and coming from AVCaptureDevice.h.
MEDIA_EXPORT
@interface CrAVFrameRateRange : NSObject
- (Float64)maxFrameRate;
@end
MEDIA_EXPORT
@interface CrAVCaptureInput : NSObject // Originally from AVCaptureInput.h.
@end
MEDIA_EXPORT
@interface CrAVCaptureOutput : NSObject // Originally from AVCaptureOutput.h.
@end
// Originally AVCaptureSession and coming from AVCaptureSession.h.
MEDIA_EXPORT
@interface CrAVCaptureSession : NSObject
- (void)release;
- (void)addInput:(CrAVCaptureInput*)input;
- (void)removeInput:(CrAVCaptureInput*)input;
- (void)addOutput:(CrAVCaptureOutput*)output;
- (void)removeOutput:(CrAVCaptureOutput*)output;
- (BOOL)isRunning;
- (void)startRunning;
- (void)stopRunning;
@end
// Originally AVCaptureConnection and coming from AVCaptureSession.h.
MEDIA_EXPORT
@interface CrAVCaptureConnection : NSObject
- (BOOL)isVideoMinFrameDurationSupported;
- (void)setVideoMinFrameDuration:(CoreMediaGlue::CMTime)minFrameRate;
- (BOOL)isVideoMaxFrameDurationSupported;
- (void)setVideoMaxFrameDuration:(CoreMediaGlue::CMTime)maxFrameRate;
@end
// Originally AVCaptureDeviceInput and coming from AVCaptureInput.h.
MEDIA_EXPORT
@interface CrAVCaptureDeviceInput : CrAVCaptureInput
@end
// Originally AVCaptureVideoDataOutputSampleBufferDelegate from
// AVCaptureOutput.h.
@protocol CrAVCaptureVideoDataOutputSampleBufferDelegate <NSObject>
@optional
- (void)captureOutput:(CrAVCaptureOutput*)captureOutput
didOutputSampleBuffer:(CoreMediaGlue::CMSampleBufferRef)sampleBuffer
fromConnection:(CrAVCaptureConnection*)connection;
@end
// Originally AVCaptureVideoDataOutput and coming from AVCaptureOutput.h.
MEDIA_EXPORT
@interface CrAVCaptureVideoDataOutput : CrAVCaptureOutput
- (oneway void)release;
- (void)setSampleBufferDelegate:(id)sampleBufferDelegate
queue:(dispatch_queue_t)sampleBufferCallbackQueue;
- (void)setAlwaysDiscardsLateVideoFrames:(BOOL)flag;
- (void)setVideoSettings:(NSDictionary*)videoSettings;
- (NSDictionary*)videoSettings;
- (CrAVCaptureConnection*)connectionWithMediaType:(NSString*)mediaType;
@end
// Class to provide access to class methods of AVCaptureDevice.
MEDIA_EXPORT
@interface AVCaptureDeviceGlue : NSObject
+ (NSArray*)devices;
+ (CrAVCaptureDevice*)deviceWithUniqueID:(NSString*)deviceUniqueID;
@end
// Class to provide access to class methods of AVCaptureDeviceInput.
MEDIA_EXPORT
@interface AVCaptureDeviceInputGlue : NSObject
+ (CrAVCaptureDeviceInput*)deviceInputWithDevice:(CrAVCaptureDevice*)device
error:(NSError**)outError;
@end
#endif // defined(__OBJC__)
#endif // MEDIA_BASE_MAC_AVFOUNDATION_GLUE_H_
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