egl_dmabuf.h (2111B)
1 /* 2 * Copyright 2021 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef MODULES_DESKTOP_CAPTURE_LINUX_WAYLAND_EGL_DMABUF_H_ 12 #define MODULES_DESKTOP_CAPTURE_LINUX_WAYLAND_EGL_DMABUF_H_ 13 14 #include <EGL/egl.h> 15 #include <EGL/eglplatform.h> 16 #include <GL/gl.h> 17 #include <gbm.h> 18 19 #include <cstdint> 20 #include <optional> 21 #include <string> 22 #include <vector> 23 24 #include "modules/desktop_capture/desktop_geometry.h" 25 26 namespace webrtc { 27 28 class EglDmaBuf { 29 public: 30 struct EGLStruct { 31 std::vector<std::string> extensions; 32 EGLDisplay display = EGL_NO_DISPLAY; 33 EGLContext context = EGL_NO_CONTEXT; 34 }; 35 36 struct PlaneData { 37 int32_t fd; 38 uint32_t stride; 39 uint32_t offset; 40 }; 41 42 EglDmaBuf(); 43 ~EglDmaBuf(); 44 45 // Returns whether the image was successfully imported from 46 // given DmaBuf and its parameters 47 bool ImageFromDmaBuf(const DesktopSize& size, 48 uint32_t format, 49 const std::vector<PlaneData>& plane_datas, 50 uint64_t modifiers, 51 const DesktopVector& offset, 52 const DesktopSize& buffer_size, 53 uint8_t* data); 54 std::vector<uint64_t> QueryDmaBufModifiers(uint32_t format); 55 56 bool IsEglInitialized() const { return egl_initialized_; } 57 58 private: 59 bool GetClientExtensions(EGLDisplay dpy, EGLint name); 60 61 bool egl_initialized_ = false; 62 bool has_image_dma_buf_import_ext_ = false; 63 int32_t drm_fd_ = -1; // for GBM buffer mmap 64 gbm_device* gbm_device_ = nullptr; // for passed GBM buffer retrieval 65 66 GLuint fbo_ = 0; 67 GLuint texture_ = 0; 68 EGLStruct egl_; 69 70 std::optional<std::string> GetRenderNode(); 71 }; 72 73 } // namespace webrtc 74 75 #endif // MODULES_DESKTOP_CAPTURE_LINUX_WAYLAND_EGL_DMABUF_H_