C++ (Cpp) GST_GL_BASE_MEMORY_ALLOCATOR_CLASS示例

示例#1

文件： gstglmemoryegl.c 项目： luisbg/gst-plugins-bad

static void
_gl_mem_destroy (GstGLMemoryEGL * mem)
{
    if (mem->image)
        gst_egl_image_unref (mem->image);

    GST_GL_BASE_MEMORY_ALLOCATOR_CLASS (parent_class)->destroy ((GstGLBaseMemory
            *) mem);
}

示例#2

文件： gstglmemorypbo.c 项目： Haifen/gst-plugins-bad

static void
_gl_mem_destroy (GstGLMemoryPBO * gl_mem)
{
  if (gl_mem->pbo)
    gst_memory_unref (GST_MEMORY_CAST (gl_mem->pbo));
  gl_mem->pbo = NULL;

  GST_GL_BASE_MEMORY_ALLOCATOR_CLASS (parent_class)->destroy ((GstGLBaseMemory
          *) gl_mem);
}

示例#3

文件： iosglmemory.c 项目： 0p1pp1/gst-plugins-bad

static void
_ios_gl_memory_destroy (GstGLBaseMemory * gl_mem)
{
  GstIOSGLMemory *mem = (GstIOSGLMemory *) gl_mem;

  mem->gl_notify (mem->gl_data);
  gst_memory_unref (GST_MEMORY_CAST (mem->cv_mem));
  GST_GL_BASE_MEMORY_ALLOCATOR_CLASS
      (gst_ios_gl_memory_allocator_parent_class)->destroy (gl_mem);
}

示例#4

文件： gstglmemoryegl.c 项目： luisbg/gst-plugins-bad

static gboolean
_gl_mem_create (GstGLMemoryEGL * gl_mem, GError ** error)
{
    GstGLContext *context = gl_mem->mem.mem.context;
    GstGLContextEGL *ctx_egl = GST_GL_CONTEXT_EGL (context);
    const GstGLFuncs *gl = context->gl_vtable;
    GstGLBaseMemoryAllocatorClass *alloc_class;

    if (!gst_gl_context_check_feature (GST_GL_CONTEXT (context),
                                       "EGL_KHR_image_base")) {
        g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_WRONG_API,
                     "EGL_KHR_image_base is not supported");
        return FALSE;
    }

    alloc_class = GST_GL_BASE_MEMORY_ALLOCATOR_CLASS (parent_class);
    if (!alloc_class->create ((GstGLBaseMemory *) gl_mem, error))
        return FALSE;

    if (gl_mem->image == NULL) {
        EGLImageKHR image = ctx_egl->eglCreateImageKHR (ctx_egl->egl_display,
                            ctx_egl->egl_context, EGL_GL_TEXTURE_2D_KHR,
                            (EGLClientBuffer) (guintptr) gl_mem->mem.tex_id, NULL);

        GST_TRACE ("Generating EGLImage handle:%p from a texture:%u",
                   gl_mem->image, gl_mem->mem.tex_id);

        if (eglGetError () != EGL_SUCCESS) {
            g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_FAILED,
                         "Failed to create EGLImage");
            return FALSE;
        }

        gl_mem->image = gst_egl_image_new_wrapped (context, image, 0, 0,
                        NULL, (GstEGLImageDestroyNotify) _destroy_egl_image);
    } else {
        gl->ActiveTexture (GL_TEXTURE0 + gl_mem->mem.plane);
        gl->BindTexture (GL_TEXTURE_2D, gl_mem->mem.tex_id);
        gl->EGLImageTargetTexture2D (GL_TEXTURE_2D,
                                     gst_egl_image_get_image (GST_EGL_IMAGE (gl_mem->image)));
    }

    return TRUE;
}

示例#5

文件： gstglmemorypbo.c 项目： Haifen/gst-plugins-bad

static gboolean
_gl_mem_create (GstGLMemoryPBO * gl_mem, GError ** error)
{
  GstGLContext *context = gl_mem->mem.mem.context;
  GstGLBaseMemoryAllocatorClass *alloc_class;

  alloc_class = GST_GL_BASE_MEMORY_ALLOCATOR_CLASS (parent_class);
  if (!alloc_class->create ((GstGLBaseMemory *) gl_mem, error))
    return FALSE;

  if (CONTEXT_SUPPORTS_PBO_DOWNLOAD (context)
      || CONTEXT_SUPPORTS_PBO_UPLOAD (context)) {
    GstAllocationParams alloc_params =
        { 0, GST_MEMORY_CAST (gl_mem)->align, 0, 0 };
    GstGLBaseMemoryAllocator *buf_allocator;
    GstGLBufferAllocationParams *params;

    buf_allocator =
        GST_GL_BASE_MEMORY_ALLOCATOR (gst_allocator_find
        (GST_GL_BUFFER_ALLOCATOR_NAME));
    params =
        gst_gl_buffer_allocation_params_new (context,
        GST_MEMORY_CAST (gl_mem)->size, &alloc_params, GL_PIXEL_UNPACK_BUFFER,
        GL_STREAM_DRAW);

    /* FIXME: lazy init this for resource constrained platforms
     * Will need to fix pbo detection based on the existence of the mem.id then */
    gl_mem->pbo = (GstGLBuffer *) gst_gl_base_memory_alloc (buf_allocator,
        (GstGLAllocationParams *) params);

    gst_gl_allocation_params_free ((GstGLAllocationParams *) params);
    gst_object_unref (buf_allocator);

    GST_CAT_LOG (GST_CAT_GL_MEMORY, "generated pbo %u", gl_mem->pbo->id);
  }

  return TRUE;
}