Method getEGLImage

piomxtextures_src/openmaxiltextureloader.cpp:478–517

------------------------------------------------------------------------------ | OpenMAXILTextureLoader::getEGLImage +-----------------------------------------------------------------------------*/

|    OpenMAXILTextureLoader::getEGLImage
+-----------------------------------------------------------------------------*/
inline
EGLImageKHR OpenMAXILTextureLoader::getEGLImage(
        OMX_U32 width,
        OMX_U32 height,
        EGLDisplay eglDisplay,
        EGLContext eglContext,
        GLuint& texture
        )
{
    EGLint attr[] = { EGL_GL_TEXTURE_LEVEL_KHR, 0, EGL_NONE};

    glGenTextures(1, &texture);
    glBindTexture(GL_TEXTURE_2D, texture);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);

    GLubyte* pixel = new GLubyte[width*height*4];
    memset(pixel, 0x0f, sizeof(GLubyte)*width*height*4);  // to have a grey texture
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, pixel);

    EGLImageKHR eglImage = eglCreateImageKHR(
                eglDisplay,
                eglContext,
                EGL_GL_TEXTURE_2D_KHR,
                (EGLClientBuffer)texture,
                attr
                );
    LOG_VERBOSE(LOG_TAG, "EGLImage:      %x.", (unsigned int)eglImage);
    LOG_VERBOSE(LOG_TAG, "Client buffer: %x.", texture);
    EGLint eglErr = eglGetError();
    if(eglErr != EGL_SUCCESS) {
        LOG_ERROR(LOG_TAG, "Failed to create KHR image: %d.", eglErr);
        return 0;
    }

    LOG_VERBOSE(LOG_TAG, "Successfully created KHR image: %x.", (unsigned int)eglImage);
    return eglImage;
}