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2a2aa7eb91
Virtual camera output uses above API to output the layout's audio to a user selected system audio device
98 lines
2.8 KiB
Objective-C
98 lines
2.8 KiB
Objective-C
//
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// CSVirtualCameraOutput.m
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// CSVirtualCameraOutput
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//
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// Created by Zakk on 5/6/20.
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// Copyright © 2020 Zakk. All rights reserved.
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//
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#import "CSVirtualCameraOutput.h"
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#import "CSPluginServices.h"
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#import <AVFoundation/AVFoundation.h>
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@implementation CSVirtualCameraOutput
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-(bool)queueFramedata:(CapturedFrameData *)frameData
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{
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CVPixelBufferRef useImage = CMSampleBufferGetImageBuffer(frameData.encodedSampleBuffer);
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if (!useImage)
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{
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return NO;
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}
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if (!self.cameraDevice)
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{
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self.cameraDevice = [[CSVirtualCameraDevice alloc] init];
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self.cameraDevice.name = self.deviceName;
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self.cameraDevice.persistOnDisconnect = self.persistDevice;
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self.cameraDevice.deviceUID = [NSString stringWithFormat:@"0x145424105986211e"];
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self.cameraDevice.frameRate = 1.0f/CMTimeGetSeconds(frameData.videoDuration);
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self.cameraDevice.width = CVPixelBufferGetWidth(useImage);
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self.cameraDevice.height = CVPixelBufferGetHeight(useImage);
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if (self.pixelFormat)
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{
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self.cameraDevice.pixelFormat = self.pixelFormat.intValue;
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} else {
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self.cameraDevice.pixelFormat = kCVPixelFormatType_32BGRA;
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}
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[self.cameraDevice createDeviceWithCompletionBlock:nil];
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} else if (self.cameraDevice.isReady) {
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[self.cameraDevice publishCVPixelBufferFrame:useImage];
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}
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if (self.audioOutputDevice)
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{
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NSString *audioTrackkey = nil;
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if (self.activeAudioTracks && (self.activeAudioTracks.allKeys.count > 0))
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{
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audioTrackkey = self.activeAudioTracks.allKeys.firstObject;
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}
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if (!audioTrackkey)
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{
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audioTrackkey = frameData.pcmAudioSamples.allKeys.firstObject;
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}
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NSArray *pcmSamples = frameData.pcmAudioSamples[audioTrackkey];
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for (id object in pcmSamples)
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{
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CMSampleBufferRef audioSample = (__bridge CMSampleBufferRef)object;
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CMFormatDescriptionRef sampleAudioFormat = CMSampleBufferGetFormatDescription(audioSample);
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AVAudioFormat *audioFormat = [[AVAudioFormat alloc] initWithCMAudioFormatDescription:sampleAudioFormat];
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if (!_audioOutput)
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{
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_audioOutput = [CSPluginServices.sharedPluginServices systemAudioOutputForFormat:audioFormat forDevice:self.audioOutputDevice];
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[_audioOutput start];
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}
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if (!_audioOutput)
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{
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break;
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}
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[_audioOutput playSampleBuffer:audioSample];
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}
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}
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return YES;
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}
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-(void)dealloc
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{
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if (self.cameraDevice)
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{
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if (!self.cameraDevice.persistOnDisconnect)
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{
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[self.cameraDevice destroyDevice];
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}
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}
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}
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@end
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