C++ (Cpp) GST_GL_MEMORY_ALLOCATOR примеры использования

Пример #1

Файл: gstglbufferpool.c Проект: Haifen/gst-plugins-bad

/* This function handles GstBuffer creation */
static GstFlowReturn
gst_gl_buffer_pool_alloc (GstBufferPool * pool, GstBuffer ** buffer,
    GstBufferPoolAcquireParams * params)
{
  GstGLMemoryAllocator *alloc;
  GstGLBufferPool *glpool = GST_GL_BUFFER_POOL_CAST (pool);
  GstGLBufferPoolPrivate *priv = glpool->priv;
  GstBuffer *buf;

  if (!(buf = gst_buffer_new ())) {
    goto no_buffer;
  }
#if GST_GL_HAVE_PLATFORM_EGL
  if (priv->want_eglimage) {
    /* alloc and append memories, also add video_meta and
     * texture_upload_meta */
    if (!gst_egl_image_memory_setup_buffer (glpool->context,
            priv->gl_params->v_info, buf))
      goto egl_image_mem_create_failed;

    *buffer = buf;

    return GST_FLOW_OK;
  }
#endif

  alloc = GST_GL_MEMORY_ALLOCATOR (priv->allocator);
  if (!gst_gl_memory_setup_buffer (alloc, buf, priv->gl_params))
    goto mem_create_failed;

  if (priv->add_glsyncmeta)
    gst_buffer_add_gl_sync_meta (glpool->context, buf);

  *buffer = buf;

  return GST_FLOW_OK;

  /* ERROR */
no_buffer:
  {
    GST_WARNING_OBJECT (pool, "can't create image");
    return GST_FLOW_ERROR;
  }
mem_create_failed:
  {
    GST_WARNING_OBJECT (pool, "Could not create GL Memory");
    return GST_FLOW_ERROR;
  }

#if GST_GL_HAVE_PLATFORM_EGL
egl_image_mem_create_failed:
  {
    GST_WARNING_OBJECT (pool, "Could not create EGLImage Memory");
    return GST_FLOW_ERROR;
  }
#endif
}

Пример #2

Файл: gstglbufferpool.c Проект: thaytan/gst-plugins-base

/* This function handles GstBuffer creation */
static GstFlowReturn
gst_gl_buffer_pool_alloc (GstBufferPool * pool, GstBuffer ** buffer,
    GstBufferPoolAcquireParams * params)
{
  GstGLMemoryAllocator *alloc;
  GstGLBufferPool *glpool = GST_GL_BUFFER_POOL_CAST (pool);
  GstGLBufferPoolPrivate *priv = glpool->priv;
  GstBuffer *buf;

  if (!(buf = gst_buffer_new ())) {
    goto no_buffer;
  }

  alloc = GST_GL_MEMORY_ALLOCATOR (priv->allocator);
  if (!gst_gl_memory_setup_buffer (alloc, buf, priv->gl_params, NULL, NULL, 0))
    goto mem_create_failed;

  if (priv->add_glsyncmeta)
    gst_buffer_add_gl_sync_meta (glpool->context, buf);

  *buffer = buf;

  return GST_FLOW_OK;

  /* ERROR */
no_buffer:
  {
    GST_WARNING_OBJECT (pool, "can't create image");
    return GST_FLOW_ERROR;
  }
mem_create_failed:
  {
    GST_WARNING_OBJECT (pool, "Could not create GL Memory");
    return GST_FLOW_ERROR;
  }
}