Creating EGL image from MPP Buffer

chrisward9000 · July 24, 2024, 5:31pm

Type: Official Firmware
Filename: ROC-RK3588S-PC_Ubuntu22.04-Xfce-r31126_v1.3.0e_240
Download Address: https://drive.google.com/drive/folders/1HA4EDAzwXz0S6dacJQMCVecuCmnWKgph
Log: tmp.rar

Hi, I’ve been trying to decode H264 and then have the output mpp_frame displayed using OpenGL by creating an EGL image. However, it keeps failing in my example below on Line 181 in function eglCreateImage(). There doesn’t seem to be any reasonable explanation as to why and the error messages are not very helpful. Any advice on correcting this example so I can get it working would be greatly appreciated, thanks.

github.com/MonocleSecurity/RockchipPlayer

main.cpp

e0436adae


      
                                     EGL_HEIGHT, height,
                                     EGL_LINUX_DRM_FOURCC_EXT, DRM_FORMAT_NV12,
                                     EGL_DMA_BUF_PLANE0_FD_EXT, fd,
                                     EGL_DMA_BUF_PLANE0_OFFSET_EXT, offset_x,
                                     EGL_DMA_BUF_PLANE0_PITCH_EXT, hor_stride,
                                     EGL_DMA_BUF_PLANE1_FD_EXT, fd,
                                     EGL_DMA_BUF_PLANE1_OFFSET_EXT, hor_stride * height,
                                     EGL_DMA_BUF_PLANE1_PITCH_EXT, hor_stride,
                                     EGL_NONE
                                   };
                const EGLImageKHR egl_image = eglCreateImage(glfwGetEGLDisplay(), glfwGetEGLContext(window), EGL_LINUX_DMA_BUF_EXT, nullptr, atts); // Fails to create image here!!!
                if (egl_image == EGL_NO_IMAGE_KHR)
                {
                  std::cout << "Failed to create EGL image" << std::endl;
                  return -11;
                }
                std::cout << "Successfully created EGL image" << std::endl;
                return 0;
              }
            }
          }

tchip_askquestions
tmp.rar (71 Bytes)

chrisward9000 · July 28, 2024, 9:09pm

RESOLVED.

I needed to use:

PFNEGLCREATEIMAGEKHRPROC eglCreateImageKHR = (PFNEGLCREATEIMAGEKHRPROC)eglGetProcAddress("eglCreateImageKHR");