92 lines
3.1 KiB
Objective-C
92 lines
3.1 KiB
Objective-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_GL_CALCULATOR_HELPER_IMPL_H_
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#define MEDIAPIPE_GPU_GL_CALCULATOR_HELPER_IMPL_H_
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#include "mediapipe/gpu/gl_calculator_helper.h"
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#include "mediapipe/gpu/gpu_shared_data_internal.h"
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#ifdef __OBJC__
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#import <AVFoundation/AVFoundation.h>
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#import <Foundation/Foundation.h>
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#endif // __OBJC__
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#ifdef __ANDROID__
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#include "mediapipe/gpu/gl_texture_buffer_pool.h"
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#endif
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namespace mediapipe {
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// This class implements the GlCalculatorHelper for iOS and Android.
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// See GlCalculatorHelper for details on these methods.
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class GlCalculatorHelperImpl {
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public:
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explicit GlCalculatorHelperImpl(CalculatorContext* cc,
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GpuResources* gpu_resources);
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~GlCalculatorHelperImpl();
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absl::Status RunInGlContext(std::function<absl::Status(void)> gl_func,
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CalculatorContext* calculator_context);
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GlTexture CreateSourceTexture(const ImageFrame& image_frame);
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GlTexture CreateSourceTexture(const GpuBuffer& gpu_buffer);
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// Note: multi-plane support is currently only available on iOS.
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GlTexture CreateSourceTexture(const GpuBuffer& gpu_buffer, int plane);
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// Creates a framebuffer and returns the texture that it is bound to.
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GlTexture CreateDestinationTexture(int output_width, int output_height,
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GpuBufferFormat format);
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GLuint framebuffer() const { return framebuffer_; }
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void BindFramebuffer(const GlTexture& dst);
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GlVersion GetGlVersion() const { return gl_context_->GetGlVersion(); }
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GlContext& GetGlContext() const;
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// For internal use.
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void ReadTexture(const GlTexture& texture, void* output, size_t size);
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private:
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// Makes a GpuBuffer accessible as a texture in the GL context.
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GlTexture MapGpuBuffer(const GpuBuffer& gpu_buffer, int plane);
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#if !MEDIAPIPE_GPU_BUFFER_USE_CV_PIXEL_BUFFER
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GlTexture MapGlTextureBuffer(const GlTextureBufferSharedPtr& texture_buffer);
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GlTextureBufferSharedPtr MakeGlTextureBuffer(const ImageFrame& image_frame);
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#endif // !MEDIAPIPE_GPU_BUFFER_USE_CV_PIXEL_BUFFER
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// Sets default texture filtering parameters.
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void SetStandardTextureParams(GLenum target, GLint internal_format);
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// Create the framebuffer for rendering.
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void CreateFramebuffer();
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std::shared_ptr<GlContext> gl_context_;
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GLuint framebuffer_ = 0;
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GpuResources& gpu_resources_;
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// Necessary to compute for a given GlContext in order to properly enforce the
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// SetStandardTextureParams.
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bool can_linear_filter_float_textures_;
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};
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} // namespace mediapipe
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#endif // MEDIAPIPE_GPU_GL_CALCULATOR_HELPER_IMPL_H_
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