kc3-lang/angle/src/libANGLE/Stream.h

Branch : - branch - main - tag -

• Show log

  Commit

• Author : Stuart Morgan
  Date : 2019-08-14 12:25:12
  Hash : 9d737966
  Message : Standardize copyright notices to project style For all "ANGLE Project" copyrights, standardize to the format specified by the style guide. Changes: - "Copyright (c)" and "Copyright(c)" changed to just "Copyright". - Removed the second half of date ranges ("Y1Y1-Y2Y2"->"Y1Y1"). - Fixed a small number of files that had no copyright date using the initial commit year from the version control history. - Fixed one instance of copyright being "The ANGLE Project" rather than "The ANGLE Project Authors" These changes are applied both to the copyright of source file, and where applicable to copyright statements that are generated by templates. BUG=angleproject:3811 Change-Id: I973dd65e4ef9deeba232d5be74c768256a0eb2e5 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1754397 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org>

• src/libANGLE/Stream.h

• //
  // Copyright 2016 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  
  // Stream.h: Defines the egl::Stream class, representing the stream
  // where frames are streamed in. Implements EGLStreanKHR.
  
  #ifndef LIBANGLE_STREAM_H_
  #define LIBANGLE_STREAM_H_
  
  #include <array>
  
  #include <EGL/egl.h>
  #include <EGL/eglext.h>
  
  #include "common/angleutils.h"
  #include "libANGLE/AttributeMap.h"
  #include "libANGLE/Debug.h"
  
  namespace rx
  {
  class StreamProducerImpl;
  }
  
  namespace gl
  {
  class Context;
  class Texture;
  }  // namespace gl
  
  namespace egl
  {
  class Display;
  class Error;
  class Thread;
  
  class Stream final : public LabeledObject, angle::NonCopyable
  {
    public:
      Stream(Display *display, const AttributeMap &attribs);
      ~Stream() override;
  
      void setLabel(EGLLabelKHR label) override;
      EGLLabelKHR getLabel() const override;
  
      enum class ConsumerType
      {
          NoConsumer,
          GLTextureRGB,
          GLTextureYUV,
      };
  
      enum class ProducerType
      {
          NoProducer,
          D3D11Texture,
      };
  
      // A GL texture interpretation of a part of a producer frame. For use with GL texture consumers
      struct GLTextureDescription
      {
          unsigned int width;
          unsigned int height;
          unsigned int internalFormat;
          unsigned int mipLevels;
      };
  
      EGLenum getState() const;
  
      void setConsumerLatency(EGLint latency);
      EGLint getConsumerLatency() const;
  
      EGLuint64KHR getProducerFrame() const;
      EGLuint64KHR getConsumerFrame() const;
  
      void setConsumerAcquireTimeout(EGLint timeout);
      EGLint getConsumerAcquireTimeout() const;
  
      ConsumerType getConsumerType() const;
      ProducerType getProducerType() const;
  
      EGLint getPlaneCount() const;
  
      rx::StreamProducerImpl *getImplementation();
  
      // Consumer creation methods
      Error createConsumerGLTextureExternal(const AttributeMap &attributes, gl::Context *context);
  
      // Producer creation methods
      Error createProducerD3D11Texture(const AttributeMap &attributes);
  
      // Consumer methods
      Error consumerAcquire(const gl::Context *context);
      Error consumerRelease(const gl::Context *context);
  
      // Some consumers are bound to GL contexts. This validates that a given context is bound to the
      // stream's consumer
      bool isConsumerBoundToContext(const gl::Context *context) const;
  
      // Producer methods
      Error validateD3D11Texture(void *texture, const AttributeMap &attributes) const;
      Error postD3D11Texture(void *texture, const AttributeMap &attributes);
  
    private:
      EGLLabelKHR mLabel;
  
      // Associated display
      Display *mDisplay;
  
      // Producer Implementation
      rx::StreamProducerImpl *mProducerImplementation;
  
      // Associated GL context. Note that this is a weak pointer used for validation purposes only,
      // and should never be arbitrarily dereferenced without knowing the context still exists as it
      // can become dangling at any time.
      gl::Context *mContext;
  
      // EGL defined attributes
      EGLint mState;
      EGLuint64KHR mProducerFrame;
      EGLuint64KHR mConsumerFrame;
      EGLint mConsumerLatency;
  
      // EGL gltexture consumer attributes
      EGLint mConsumerAcquireTimeout;
  
      // EGL gltexture yuv consumer attributes
      EGLint mPlaneCount;
      struct PlaneTexture
      {
          EGLint textureUnit;
          gl::Texture *texture;
      };
      // Texture units and textures for all the planes
      std::array<PlaneTexture, 3> mPlanes;
  
      // Consumer and producer types
      ConsumerType mConsumerType;
      ProducerType mProducerType;
  
      // ANGLE-only method, used internally
      friend class gl::Texture;
      void releaseTextures();
  };
  }  // namespace egl
  
  #endif  // LIBANGLE_STREAM_H_