Ios AvassetWriteInputPixelBufferAdapter appendPixelBuffer:EXC_BAD_访问
我最近几天遇到了一个让我发疯的问题。这是关于AvassetWriterInputPixelBufferAdapter appendPixelBuffer方法的。 无论我做什么,这都会导致EXC\u无法访问此线路。我知道有几个帖子在谈论这个问题,但没有人能帮我 这就是我的情况:我正在用OpenGLES渲染一个纹理,我想用这些纹理创建一个视频。这是我的密码: 创建FBO、附加纹理和像素缓冲区以填充渲染:Ios AvassetWriteInputPixelBufferAdapter appendPixelBuffer:EXC_BAD_访问,ios,opengl-es-2.0,avfoundation,avassetwriter,Ios,Opengl Es 2.0,Avfoundation,Avassetwriter,我最近几天遇到了一个让我发疯的问题。这是关于AvassetWriterInputPixelBufferAdapter appendPixelBuffer方法的。 无论我做什么,这都会导致EXC\u无法访问此线路。我知道有几个帖子在谈论这个问题,但没有人能帮我 这就是我的情况:我正在用OpenGLES渲染一个纹理,我想用这些纹理创建一个视频。这是我的密码: 创建FBO、附加纹理和像素缓冲区以填充渲染: glGenFramebuffers(1, &_secondFrameBuffer
glGenFramebuffers(1, &_secondFrameBuffer);
glGenRenderbuffers(1, &_depthRenderBuffer);
CVPixelBufferPoolCreatePixelBuffer(NULL, [_videoWriter.pixelBufferInput pixelBufferPool], &_fboTexturePixelBuffer);
CVOpenGLESTextureCacheCreateTextureFromImage(kCFAllocatorDefault,
_textureCache,
_fboTexturePixelBuffer,
NULL,
GL_TEXTURE_2D,
GL_RGBA,
(int)size.width,
(int)size.height,
GL_BGRA,
GL_UNSIGNED_BYTE,
0,
&_fboTexture);
glBindTexture(CVOpenGLESTextureGetTarget(_fboTexture), CVOpenGLESTextureGetName(_fboTexture));
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glBindRenderbuffer(GL_RENDERBUFFER, _depthRenderBuffer);
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT16, size.width, size.height);
glBindFramebuffer(GL_FRAMEBUFFER, _secondFrameBuffer);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, CVOpenGLESTextureGetName(_fboTexture), 0);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, _depthRenderBuffer);
glBindFramebuffer(GL_FRAMEBUFFER, _secondFrameBuffer);
AVAssetWriter创建:
_dataQueue = dispatch_queue_create("data_queue", NULL);
_assetWriter = [[AVAssetWriter alloc] initWithURL:outputURL fileType:AVFileTypeQuickTimeMovie error:nil];
int width = [UIScreen mainScreen].applicationFrame.size.width * [UIScreen mainScreen].scale;
int height = [UIScreen mainScreen].applicationFrame.size.height * [UIScreen mainScreen].scale;
NSDictionary *videoSettings = [NSDictionary dictionaryWithObjectsAndKeys:
AVVideoCodecH264, AVVideoCodecKey,
[NSNumber numberWithInt:width], AVVideoWidthKey,
[NSNumber numberWithInt:height], AVVideoHeightKey,
nil];
_assetWriterInput = [AVAssetWriterInput assetWriterInputWithMediaType:AVMediaTypeVideo outputSettings:videoSettings];
_assetWriterInput.expectsMediaDataInRealTime = YES;
NSDictionary *bufferAttributes = [NSDictionary dictionaryWithObjectsAndKeys:
[NSNumber numberWithInt:kCVPixelFormatType_32BGRA], kCVPixelBufferPixelFormatTypeKey,
[NSNumber numberWithBool:YES], kCVPixelBufferOpenGLESCompatibilityKey,
nil];
_assetWriterInputPixelBufferAdaptor = [AVAssetWriterInputPixelBufferAdaptor assetWriterInputPixelBufferAdaptorWithAssetWriterInput:_assetWriterInput sourcePixelBufferAttributes:bufferAttributes];
[_assetWriter addInput:_assetWriterInput];
_presentationTime = kCMTimeZero;
[_assetWriter startWriting];
[_assetWriter startSessionAtSourceTime:_presentationTime];
然后,我尝试添加像素缓冲区
- (void)appendPixelBuffer:(CVPixelBufferRef)pixelBuffer
{
dispatch_async(_dataQueue, ^{
if (pixelBuffer != NULL) {
[_assetWriterInputPixelBufferAdaptor appendPixelBuffer:pixelBuffer withPresentationTime:_presentationTime];
CMTime frameTime = CMTimeMake(1, 30);
_presentationTime = CMTimeAdd(_presentationTime, frameTime);
} else {
NSLog(@"NULL PixelBuffer !");
}
});
}
崩溃->执行错误访问
谁能帮帮我吗
谢谢 我在方法-voidappendPixelBuffer:CVPixelBufferRefpixelBuffer中看到了您的问题。如果您使用ARC,请确保您的pixelBuffer未在异步队列上释放,以确保您的pixelBuffer未释放,请尝试此代码
- (void)appendPixelBuffer:(CVPixelBufferRef)pixelBuffer
{
CVPixelBufferRetain(pixelBuffer);
dispatch_async(_dataQueue, ^{
if (pixelBuffer != NULL) {
[_assetWriterInputPixelBufferAdaptor appendPixelBuffer:pixelBuffer withPresentationTime:_presentationTime];
CMTime frameTime = CMTimeMake(1, 30);
_presentationTime = CMTimeAdd(_presentationTime, frameTime);
CVPixelBufferRelease(pixelBuffer);
} else {
NSLog(@"NULL PixelBuffer !");
}
});
}
GL_BGRA在哪里定义?