CVOpenGLESTextureCacheCreateTextureFromImage返回错误6683

Question

我目前正在尝试使用YUV420格式(双平面)在openGL中绘制图像.我收到原始数据,并尝试将其解析为CVPixelBuffer,然后使用CVOpenGLESTextureCacheCreateTextureFromImage传递所述缓冲区.虽然在解析CVPixelBuffer时没有收到任何错误,但在尝试传递给CVOpenGLESTextureCacheCreateTextureFromImage时收到错误(-6683).我正在尽力遵循Apple的GLCameraRipple示例代码 - 除了我再次使用原始图像数据而不是相机中的数据.

希望有人可以解释我在这里失踪的是什么 - 我认为这是一个缺失的属性......

FYI,平面0是Y平面,平面1是UV平面 - 其中UV平面应该是Y平面的宽度和高度的一半.

size_t numPlanes = image->GetNumPlanes();
size_t planeWidth[numPlanes];
size_t planeHeight[numPlanes];
size_t scanWidth[numPlanes];
void *planeIndex[numPlanes];
for(int i = 0; i<numPlanes; i++){
    i<1 ? planeWidth[i] = image->GetWidth() : planeWidth[i] = image->GetWidth()/2;
    i<1 ? planeHeight[i] = image->GetHeight() : planeWidth[i] = image->GetHeight()/2;
    scanWidth[i] = image->GetScanWidth(i);
    planeIndex[i] = image->GetPlanePointer(i);
}

CVPixelBufferRef pixelBuffer;
CFDictionaryRef empty;
CFMutableDictionaryRef attrs;
empty = CFDictionaryCreate(kCFAllocatorDefault,
                           NULL,
                           NULL,
                           0,
                           &kCFTypeDictionaryKeyCallBacks,
                           &kCFTypeDictionaryValueCallBacks);

attrs = CFDictionaryCreateMutable(kCFAllocatorDefault,
                                  1,
                                  &kCFTypeDictionaryKeyCallBacks,
                                  &kCFTypeDictionaryValueCallBacks);

CFDictionarySetValue(attrs, kCVPixelBufferIOSurfacePropertiesKey, empty);



CVReturn cvError = CVPixelBufferCreateWithPlanarBytes(kCFAllocatorDefault,
                                                      image->GetWidth(),
                                                      image->GetHeight(),
                                                      kCVPixelFormatType_420YpCbCr8BiPlanarFullRange,
                                                      nil,
                                                      nil,
                                                      numPlanes,
                                                      planeIndex,
                                                      planeWidth,
                                                      planeHeight,
                                                      scanWidth,
                                                      nil, nil, attrs, &pixelBuffer);
if(cvError) NSLog(@"Error at CVPixelBufferCreateWithPlanarBytes:  %d", cvError);

CVReturn err;
size_t width = CVPixelBufferGetWidth(pixelBuffer);
size_t height = CVPixelBufferGetHeight(pixelBuffer);

if (!_videoTextureCache)
{
    NSLog(@"No video texture cache");
    return;
}

if (_bModel == nil ||
    width != _textureWidth ||
    height != _textureHeight)
{
    _textureWidth = width;
    _textureHeight = height;

    _bModel = [[BufferModel alloc] initWithScreenWidth:_screenWidth
                                          screenHeight:_screenHeight
                                            meshFactor:_meshFactor
                                          textureWidth:_textureWidth
                                         textureHeight:_textureHeight];

    [self setupBuffers];
}

[self cleanUpTextures];

// CVOpenGLESTextureCacheCreateTextureFromImage will create GLES texture
// optimally from CVImageBufferRef.

// Y-plane
glActiveTexture(GL_TEXTURE0);
err = CVOpenGLESTextureCacheCreateTextureFromImage(kCFAllocatorDefault,
                                                   _videoTextureCache,
                                                   pixelBuffer,
                                                   NULL,
                                                   GL_TEXTURE_2D,
                                                   GL_RED_EXT,
                                                   _textureWidth,
                                                   _textureHeight,
                                                   GL_RED_EXT,
                                                   GL_UNSIGNED_BYTE,
                                                   0,
                                                   &_lumaTexture);
if (err)
{
    NSLog(@"Error at CVOpenGLESTextureCacheCreateTextureFromImage %d", err);
}

感谢能够提供帮助的任何人.虽然我知道存在类似的问题(不完全相同),但所述问题也很老,从未收到任何回复.我希望能为我的情况带来更多好运.

Answer 1

您创建的 CVPixelBuffer 中的 iosurface 属性为 null。

手动创建：

<CVPixelBuffer 0x1fd52790 width=1280 height=720 pixelFormat=420v iosurface=0x0 planes=2>

由 CMSampleBufferGetImageBuffer 创建：

<CVPixelBuffer 0x1fd521e0 width=1280 height=720 pixelFormat=420f iosurface=0x21621c54 planes=2>

据我所知，没有解决办法。