实用记事（17）
ios::sync_with_stdio(false);
int CEglimage::initEgl()
PFNEGLCREATEIMAGEKHRPROC n_eglCreateImageKHR = NULL;
g_glEGLImageTargetTexture2DOES = NULL;
g_eglDisplayHandle = NULL;
LOGI(&start open...&);
glFinish();
const char* const driver_absolute_path = &/system/lib/egl/libEGL_mali.so&;
/*dso = dlopen(driver_absolute_path, RTLD_LAZY);
if (dso != 0)
LOGI(&dlopen: SUCCEEDED&);
n_eglCreateImageKHR = (PFNEGLCREATEIMAGEKHRPROC)dlsym(dso, &eglCreateImageKHR&);
g_eglDestroyImageKHR = (PFNEGLDESTROYIMAGEKHRPROC)dlsym(dso,&eglDestroyImageKHR&);
//LOGI(&dlopen: FAILED! Loading functions in common way!&);
n_eglCreateImageKHR = (PFNEGLCREATEIMAGEKHRPROC) eglGetProcAddress(&eglCreateImageKHR&);
g_eglDestroyImageKHR = (PFNEGLDESTROYIMAGEKHRPROC) eglGetProcAddress(&eglDestroyImageKHR&);
if(n_eglCreateImageKHR == NULL)
LOGE(&Error: Failed to find eglCreateImageKHR at %s:%i\n&, __FILE__, __LINE__);
return -1;
g_glEGLImageTargetTexture2DOES = (PFNGLEGLIMAGETARGETTEXTURE2DOESPROC) eglGetProcAddress(&glEGLImageTargetTexture2DOES&);
if(g_glEGLImageTargetTexture2DOES == NULL)
LOGE(&Error: Failed to find glEGLImageTargetTexture2DOES at %s:%i\n&, __FILE__, __LINE__);
return -1;
if(g_eglDestroyImageKHR == NULL)
LOGE(&Error: Failed to find eglDestroyImageKHR at %s:%i\n&, __FILE__, __LINE__);
return -1;
LOGI(&start Create the Android Graphic Buffer...,nWidth=%d,nHeight=%d&,nWidth,nHeight);
//step 2. Create the Android Graphic Buffer
buffer = (void*)new GraphicBuffer(nWidth, nHeight,
HAL_PIXEL_FORMAT_RGBA_8888,
GraphicBuffer::USAGE_HW_TEXTURE |
GraphicBuffer::USAGE_HW_2D |
GraphicBuffer::USAGE_SW_READ_OFTEN);
LOGI(&start Init the buffer...&);
// Init the buffer
status_t err = ((GraphicBuffer*)buffer)-&initCheck();
if (err != NO_ERROR)
LOGE(&InitCheck return error: %s\n&, strerror(err));
return -1;
// Retrieve andorid native buffer
//step 3. Create the EGLImage
const EGLint attrs[] = {
EGL_IMAGE_PRESERVED_KHR, EGL_TRUE,
EGL_NONE, EGL_NONE
g_eglDisplayHandle = eglGetCurrentDisplay();
android_native_buffer_t* clientBuf = ((GraphicBuffer*)buffer)-&getNativeBuffer();
if(clientBuf == NULL)
LOGE(&clientBuf == NULL!&);
return -1;
LOGI(&start eglCreateImageKHR...&);
pEGLImage = n_eglCreateImageKHR(g_eglDisplayHandle, eglGetCurrentContext(), EGL_NATIVE_BUFFER_ANDROID,
clientBuf, attrs);
if (pEGLImage == EGL_NO_IMAGE_KHR) {
EGLint error = eglGetError();
//TODO: free GraphicBuffer
LOGE(&Error (%#x): Creating EGLImageKHR at %s:%i\n&, error, __FILE__, __LINE__);
return -1;
LOGE(&End init&);
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