<HTML> <HEAD> <META content="text/html; charset=utf-8" http-equiv=Content-Type> <META content="OPENWEBMAIL" name=GENERATOR> </HEAD> <BODY bgColor=#ffffff> Hello, I have built a simple application using QT & SDL that has a button which opens a preview on clicking, whenever camera (system/usb) is connected to the EVM. My app successfully receives correct parameters related to camera (resolution, frame rate, frame format) and I have verified it using debug prints. However, when I click on preview button, it crashes and throws error related to EGL. On executing it with gdb, I found out that it is not able to get a valid EGL configuration. The eglChooseConfig function (in SDL_egl.c) doesn't find a matching EGL config and it fails to create a surface and open the preview. Also, I do not get any "EGL 1.4 Initialised" prints when my app executes. This print, on the contrary, is visible when I run OGLES2ChameleonMan in /usr/bin/SGX/demos/Wayland. On digging further, I found that the "eglinfo" command displays the egl configurations on the terminal. <div>However, when it returns EGL_BAD_ALLOC on my EVM, if I run it without stopping weston. It runs successfully only after stopping weston. I am assuming this is the reason why my application is not able to find a matching EGL config because it runs over weston.</div> <div> </div> <div>-----------------------------------------------------------------------------------</div> <div> <p style="box-sizing: border-box; margin: 1.5em 0px; line-height: 1.35em; font-size: 14px; text-rendering: optimizelegibility; color: rgb(85, 85, 85); font-family: "Source Sans Pro", Helvetica, Arial, sans-serif; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); text-decoration-style: initial; text-decoration-color: initial;">root@am57xx-evm:/mnt# eglinfo <span style="color: rgb(85, 85, 85); font-family: monospace, serif; font-size: 12.6px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: left; text-indent: 0px; text-transform: none; white-space: pre; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(242, 242, 242); text-decoration-style: initial; text-decoration-color: initial; display: inline !important; float: none;">eglGetConfigs(): ====================================================================== ********************************** EGL config number: 0 EGL vendor string: Imagination Technologies EGL version string: 1.4 build 1.14@3699939 (MAIN) EGL extensions: EGL_IMG_client_api_ogl EGL_KHR_image EGL_KHR_image_base EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_vg_parent_image EGL_IMG_cl_image EGL_KHR_fence_sync EGL_IMG_context_priority EGL_IMG_hibernate_process EGL_IMG_image_plane_attribs EGL_KHR_surfaceless_context EGL_KHR_wait_sync EGL_KHR_create_context EGL_WL_bind_wayland_display EGL_EXT_image_dma_buf_import EGL client APIs are: OpenGL_ES EGL config Attributes: EGL_CONFIG_ID = 0x1 EGL_BUFFER_SIZE = 0x20 EGL_RED_SIZE = 0x8 EGL_GREEN_SIZE = 0x8 EGL_BLUE_SIZE = 0x8 EGL_LUMINANCE_SIZE = 0x0 EGL_ALPHA_SIZE = 0x8 EGL_ALPHA_MASK_SIZE = 0x0 EGL_BIND_TO_TEXTURE_RGB = 0x1 EGL_BIND_TO_TEXTURE_RGBA = 0x1 EGL_COLOR_BUFFER_TYPE = 0x308e EGL_CONFIG_CAVEAT = 0x3038 EGL_CONFORMANT = 0x1 EGL_DEPTH_SIZE = 0x18 EGL_LEVEL = 0x0 EGL_MAX_PBUFFER_WIDTH = 0x1000 EGL_MAX_PBUFFER_HEIGHT = 0x1000 EGL_MAX_PBUFFER_PIXELS = 0x1000000 EGL_MAX_SWAP_INTERVAL = 0xa EGL_MIN_SWAP_INTERVAL = 0x1 EGL_NATIVE_RENDERABLE = 0x0 EGL_NATIVE_VISUAL_ID = 0x0 EGL_NATIVE_VISUAL_TYPE = 0x0 EGL_RENDERABLE_TYPE = 0x1 EGL_OPENGL_ES_BIT EGL_SAMPLE_BUFFERS = 0x0 EGL_SAMPLES = 0x0 EGL_STENCIL_SIZE = 0x8 EGL_SURFACE_TYPE = 0x5 EGL_PBUFFER_BIT EGL_WINDOW_BIT EGL_TRANSPARENT_TYPE = 0x3038 EGL_TRANSPARENT_RED_VALUE = 0x0 EGL_TRANSPARENT_GREEN_VALUE = 0x0 EGL_TRANSPARENT_BLUE_VALUE = 0x0 Creating Window surface.. PVR:(Error): WSEGL_CreateWindowDrawable: Couldn't set CRTC: Permission denied [0, ] Unable to create surface egl error 'EGL_BAD_ALLOC' (0x3003)</div> <div>----------------------------------------------------------------------------------- </div> <div> </div> Does anyone has any idea about this strange behaviour? Also, Is there any way to run eglinfo command without stopping weston? Because I think my application is polling available egl configurations at the run time, but is not returning anything as it runs over weston. The ldd of my application returns: ----------------------------------------------------------------------------------- <pre class="brush: bash; light: true; collapse: true; fontsize: 100; first-line: 1; html-script: true; toolbar: false; " style="box-sizing: border-box; font-family: monospace, serif; font-size: 0.9em; white-space: pre; padding: 10px; background-color: rgb(242, 242, 242); border-radius: 3px; overflow-wrap: normal; color: rgb(85, 85, 85); font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: left; text-indent: 0px; text-transform: none; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;">root@am57xx-evm:/mnt# ldd cam_preview linux-vdso.so.1 (0xbec50000) libpjsua.so.2 => /usr/local/PJSIP_ONLY/libpjsua.so.2 (0xb6e6e000) libpjsip-ua.so.2 => /usr/local/PJSIP_ONLY/libpjsip-ua.so.2 (0xb6e48000) libpjsip-simple.so.2 => /usr/local/PJSIP_ONLY/libpjsip-simple.so.2 (0xb6e28000) libpjsip.so.2 => /usr/local/PJSIP_ONLY/libpjsip.so.2 (0xb6dda000) libpjmedia-codec.so.2 => /usr/local/PJSIP_ONLY/libpjmedia-codec.so.2 (0xb6dba000) libpjmedia-videodev.so.2 => /usr/local/PJSIP_ONLY/libpjmedia-videodev.so.2 (0xb6d9e000) libpjmedia-audiodev.so.2 => /usr/local/PJSIP_ONLY/libpjmedia-audiodev.so.2 (0xb6d88000) libpjmedia.so.2 => /usr/local/PJSIP_ONLY/libpjmedia.so.2 (0xb6d12000) libpjnath.so.2 => /usr/local/PJSIP_ONLY/libpjnath.so.2 (0xb6cdf000) libpjlib-util.so.2 => /usr/local/PJSIP_ONLY/libpjlib-util.so.2 (0xb6cab000) libsrtp.so.2 => /usr/local/PJSIP_ONLY/libsrtp.so.2 (0xb6c87000) libresample.so.2 => /usr/local/PJSIP_ONLY/libresample.so.2 (0xb6c6a000) libgsmcodec.so.2 => /usr/local/PJSIP_ONLY/libgsmcodec.so.2 (0xb6c4c000) libspeex.so.2 => /usr/local/PJSIP_ONLY/libspeex.so.2 (0xb6c13000) libilbccodec.so.2 => /usr/local/PJSIP_ONLY/libilbccodec.so.2 (0xb6bf4000) libg7221codec.so.2 => /usr/local/PJSIP_ONLY/libg7221codec.so.2 (0xb6bd4000) libyuv.so.2 => /usr/local/PJSIP_ONLY/libyuv.so.2 (0xb6ba5000) libpj.so.2 => /usr/local/PJSIP_ONLY/libpj.so.2 (0xb6b77000) libopenh264.so.5 => /usr/local/PJSIP_ONLY/libopenh264.so.5 (0xb6a94000) libstdc++.so.6 => /lib/libstdc++.so.6 (0xb6978000) libuuid.so.1 => /lib/libuuid.so.1 (0xb6964000) librt.so.1 => /lib/librt.so.1 (0xb694e000) libasound.so.2 => /usr/lib/libasound.so.2 (0xb686a000) libSDL2-2.0.so.0 => /usr/local/SDL_ONLY/libSDL2-2.0.so.0 (0xb6783000) libv4l2.so.0 => /usr/lib/libv4l2.so.0 (0xb6767000) libQt5Widgets.so.5 => /usr/lib/libQt5Widgets.so.5 (0xb625e000) libQt5Gui.so.5 => /usr/lib/libQt5Gui.so.5 (0xb5d71000) libQt5Core.so.5 => /usr/lib/libQt5Core.so.5 (0xb5887000) libpthread.so.0 => /lib/libpthread.so.0 (0xb5863000) libGLESv2.so.2 => /usr/lib/libGLESv2.so.2 (0xb57e8000) libQt5X11Extras.so.5 => /usr/local/PJSIP_ONLY/libQt5X11Extras.so.5 (0xb6f30000) libX11.so.6 => /usr/lib/libX11.so.6 (0xb56cb000) libxcb.so.1 => /usr/lib/libxcb.so.1 (0xb569b000) libXau.so.6 => /usr/lib/libXau.so.6 (0xb5688000) libXdmcp.so.6 => /usr/lib/libXdmcp.so.6 (0xb5673000) libm.so.6 => /lib/libm.so.6 (0xb55f7000) libgcc_s.so.1 => /lib/libgcc_s.so.1 (0xb55ce000) libc.so.6 => /lib/libc.so.6 (0xb54e1000) /lib/ld-linux-armhf.so.3 (0xb6f16000) libdl.so.2 => /lib/libdl.so.2 (0xb54ce000) libwayland-client.so.0 => /usr/lib/libwayland-client.so.0 (0xb54b4000) libpvr_wlegl.so.1 => /usr/lib/libpvr_wlegl.so.1 (0xb54a3000) libwayland-cursor.so.0 => /usr/lib/libwayland-cursor.so.0 (0xb548c000) libxkbcommon.so.0 => /usr/lib/libxkbcommon.so.0 (0xb5444000) libv4lconvert.so.0 => /usr/lib/libv4lconvert.so.0 (0xb53c0000) libjpeg.so.62 => /usr/lib/libjpeg.so.62 (0xb537c000) libsrv_um.so.1 => /usr/lib/libsrv_um.so.1 (0xb5338000) libpng16.so.16 => /usr/lib/libpng16.so.16 (0xb52ff000) libz.so.1 => /lib/libz.so.1 (0xb52db000) libicui18n.so.59 => /usr/lib/libicui18n.so.59 (0xb50db000) libicuuc.so.59 => /usr/lib/libicuuc.so.59 (0xb4f71000) libicudata.so.59 => /usr/lib/libicudata.so.59 (0xb364c000) libdrm.so.2 => /usr/lib/libdrm.so.2 (0xb362f000) libgbm.so.2 => /usr/lib/libgbm.so.2 (0xb361c000) libudev.so.1 => /lib/libudev.so.1 (0xb3600000) libwayland-server.so.0 => /usr/lib/libwayland-server.so.0 (0xb35e3000) libdrm_omap.so.1 => /usr/lib/libdrm_omap.so.1 (0xb35d0000) libffi.so.6 => /usr/lib/libffi.so.6 (0xb35b9000) libIMGegl.so.1 => /usr/lib/libIMGegl.so.1 (0xb3593000) libpvr2d.so.1 => /usr/lib/libpvr2d.so.1 (0xb357f000) libresolv.so.2 => /lib/libresolv.so.2 (0xb355e000) libcap.so.2 => /lib/libcap.so.2 (0xb3549000) libdbm.so.1 => /usr/lib/libdbm.so.1 (0xb3537000)</pre> --------------------------------------------------------------------------------------------- -- Thanks & Regards, Devashish Tiwari CDOT India </BODY> </HTML>