mirror of
https://github.com/CTCaer/RetroArch.git
synced 2024-12-26 12:47:37 +00:00
136 lines
4.6 KiB
C++
136 lines
4.6 KiB
C++
static AVCaptureSession *_session;
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static NSString *_sessionPreset;
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CVOpenGLESTextureCacheRef textureCache;
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GLuint outputTexture;
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static bool newFrame = false;
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#ifndef GL_BGRA
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#define GL_BGRA 0x80E1
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#endif
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void event_process_camera_frame(void* pixelBufferPtr)
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{
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CVOpenGLESTextureRef renderTexture;
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CVPixelBufferRef pixelBuffer = (CVPixelBufferRef)pixelBufferPtr;
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CVReturn ret;
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size_t width = CVPixelBufferGetWidth(pixelBuffer);
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size_t height = CVPixelBufferGetHeight(pixelBuffer);
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CVPixelBufferLockBaseAddress(pixelBuffer, 0);
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//TODO - rewrite all this
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// create a texture from our render target.
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// textureCache will be what you previously made with CVOpenGLESTextureCacheCreate
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ret = CVOpenGLESTextureCacheCreateTextureFromImage(kCFAllocatorDefault,
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textureCache, pixelBuffer, NULL, GL_TEXTURE_2D,
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GL_RGBA, (GLsizei)width, (GLsizei)height, GL_BGRA, GL_UNSIGNED_BYTE, 0, &renderTexture);
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if (!renderTexture || ret)
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{
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RARCH_ERR("ioscamera: CVOpenGLESTextureCacheCreateTextureFromImage failed.\n");
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return;
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}
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outputTexture = CVOpenGLESTextureGetName(renderTexture);
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glBindTexture(GL_TEXTURE_2D, outputTexture);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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CVPixelBufferUnlockBaseAddress(pixelBuffer, 0);
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[[NSNotificationCenter defaultCenter] postNotificationName:@"NewCameraTextureReady" object:nil];
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newFrame = true;
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glBindTexture(GL_TEXTURE_2D, 0);
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CVOpenGLESTextureCacheFlush(textureCache, 0);
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CFRelease(renderTexture);
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CFRelease(pixelBuffer);
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pixelBuffer = 0;
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}
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- (void)captureOutput:(AVCaptureOutput *)captureOutput
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didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer
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fromConnection:(AVCaptureConnection *)connection
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{
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// TODO: Don't post if event queue is full
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CVPixelBufferRef pixelBuffer = (CVPixelBufferRef)CVPixelBufferRetain(CMSampleBufferGetImageBuffer(sampleBuffer));
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event_process_camera_frame(pixelBuffer);
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}
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/* TODO - add void param to onCameraInit so we can pass g_context. */
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- (void) onCameraInit
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{
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NSError *error;
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AVCaptureVideoDataOutput * dataOutput;
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AVCaptureDeviceInput *input;
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AVCaptureDevice *videoDevice;
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CVEAGLContext egl_context = (CVEAGLContext)g_context;
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if (!egl_context)
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return;
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#if COREVIDEO_USE_EAGLCONTEXT_CLASS_IN_API
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CVReturn ret = CVOpenGLESTextureCacheCreate(kCFAllocatorDefault, NULL, (CVEAGLContext)egl_context, NULL, &textureCache);
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#else
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CVReturn ret = CVOpenGLESTextureCacheCreate(kCFAllocatorDefault, NULL, (__bridge void *)egl_context, NULL, &textureCache);
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#endif
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(void)ret;
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//-- Setup Capture Session.
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_session = [[AVCaptureSession alloc] init];
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[_session beginConfiguration];
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// TODO: dehardcode this based on device capabilities
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_sessionPreset = AVCaptureSessionPreset640x480;
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//-- Set preset session size.
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[_session setSessionPreset:_sessionPreset];
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//-- Creata a video device and input from that Device. Add the input to the capture session.
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videoDevice = (AVCaptureDevice*)[AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
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if (videoDevice == nil)
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assert(0);
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//-- Add the device to the session.
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input = (AVCaptureDeviceInput*)[AVCaptureDeviceInput deviceInputWithDevice:videoDevice error:&error];
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if (error)
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{
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RARCH_ERR("video device input %s\n", error.localizedDescription.UTF8String);
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assert(0);
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}
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[_session addInput:input];
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//-- Create the output for the capture session.
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dataOutput = (AVCaptureVideoDataOutput*)[[AVCaptureVideoDataOutput alloc] init];
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[dataOutput setAlwaysDiscardsLateVideoFrames:NO]; // Probably want to set this to NO when recording
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[dataOutput setVideoSettings:[NSDictionary dictionaryWithObject:[NSNumber numberWithInt:kCVPixelFormatType_32BGRA] forKey:(id)kCVPixelBufferPixelFormatTypeKey]];
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// Set dispatch to be on the main thread so OpenGL can do things with the data
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[dataOutput setSampleBufferDelegate:self queue:dispatch_get_main_queue()];
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[_session addOutput:dataOutput];
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[_session commitConfiguration];
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}
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- (void) onCameraStart
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{
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[_session startRunning];
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}
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- (void) onCameraStop
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{
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[_session stopRunning];
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}
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- (void) onCameraFree
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{
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CVOpenGLESTextureCacheFlush(textureCache, 0);
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CFRelease(textureCache);
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}
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