69 lines
2.7 KiB
C++
69 lines
2.7 KiB
C++
// Copyright 2019 The MediaPipe Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef MEDIAPIPE_GPU_PIXEL_BUFFER_POOL_UTIL_H_
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#define MEDIAPIPE_GPU_PIXEL_BUFFER_POOL_UTIL_H_
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#include <CoreVideo/CoreVideo.h>
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#include <TargetConditionals.h>
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#include <functional>
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#ifndef __APPLE__
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#error gpu_pixel_buffer_pool_util is only for use on Apple platforms.
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#endif // !defined(__APPLE__)
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namespace mediapipe {
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#if TARGET_OS_OSX
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typedef CVOpenGLTextureCacheRef CVTextureCacheType;
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#else
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typedef CVOpenGLESTextureCacheRef CVTextureCacheType;
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#endif // TARGET_OS_OSX
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// Create a CVPixelBufferPool.
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CVPixelBufferPoolRef CreateCVPixelBufferPool(int width, int height,
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OSType pixel_format,
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int keep_count,
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CFTimeInterval maxAge);
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// Preallocate the given number of pixel buffers.
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OSStatus PreallocateCVPixelBufferPoolBuffers(CVPixelBufferPoolRef pool,
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int count,
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CFDictionaryRef auxAttributes);
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// Create a CVPixelBuffer using a pool.
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// If the pool is full, will flush the provided texture cache before trying
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// again.
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CVReturn CreateCVPixelBufferWithPool(CVPixelBufferPoolRef pool,
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CFDictionaryRef auxAttributes,
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CVTextureCacheType textureCache,
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CVPixelBufferRef* outBuffer);
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// Create a CVPixelBuffer using a pool.
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// If the pool is full, will call the provided function before trying again.
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CVReturn CreateCVPixelBufferWithPool(CVPixelBufferPoolRef pool,
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CFDictionaryRef auxAttributes,
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std::function<void(void)> flush,
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CVPixelBufferRef* outBuffer);
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// Create an auxiliary attribute dictionary, which can be used with
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// CVPixelBufferPool, specifying the given allocation threshold.
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CFDictionaryRef CreateCVPixelBufferPoolAuxiliaryAttributesForThreshold(
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int allocationThreshold);
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} // namespace mediapipe
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#endif // MEDIAPIPE_GPU_PIXEL_BUFFER_POOL_UTIL_H_
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