C++ (Cpp) gst_buffer_add_texture_upload_metaの例

コード例 #1

ファイル: gstvaapivideometa_texture.c プロジェクト: AdrianAtHumboldt/gstreamer-vaapi

gboolean
gst_buffer_ensure_texture_upload_meta (GstBuffer * buffer)
{
  GstVideoGLTextureUploadMeta *const meta =
      gst_buffer_get_video_gl_texture_upload_meta (buffer);

  return meta ?
      meta_texture_ensure_info_from_buffer (meta->user_data, buffer) :
      gst_buffer_add_texture_upload_meta (buffer);
}

コード例 #2

ファイル: gstvaapivideobufferpool.c プロジェクト: rexxster/gstreamer-vaapi

static GstFlowReturn
gst_vaapi_video_buffer_pool_alloc_buffer (GstBufferPool * pool,
    GstBuffer ** out_buffer_ptr, GstBufferPoolAcquireParams * params)
{
  GstVaapiVideoBufferPoolPrivate *const priv =
      GST_VAAPI_VIDEO_BUFFER_POOL (pool)->priv;
  GstVaapiVideoBufferPoolAcquireParams *const priv_params =
      (GstVaapiVideoBufferPoolAcquireParams *) params;
  GstVaapiVideoMeta *meta;
  GstMemory *mem;
  GstBuffer *buffer;

  const gboolean alloc_vaapi_video_meta = !params ||
      !(params->flags & GST_VAAPI_VIDEO_BUFFER_POOL_ACQUIRE_FLAG_NO_ALLOC);

  if (!priv->allocator)
    goto error_no_allocator;

  if (alloc_vaapi_video_meta) {
    meta = gst_vaapi_video_meta_new (priv->display);
    if (!meta)
      goto error_create_meta;

    buffer = gst_vaapi_video_buffer_new (meta);
  } else {
    meta = NULL;
    buffer = gst_vaapi_video_buffer_new_empty ();
  }
  if (!buffer)
    goto error_create_buffer;

  if (priv_params && priv_params->proxy)
    gst_vaapi_video_meta_set_surface_proxy (meta, priv_params->proxy);

  if (priv->use_dmabuf_memory)
    mem = gst_vaapi_dmabuf_memory_new (priv->allocator, meta);
  else
    mem = gst_vaapi_video_memory_new (priv->allocator, meta);
  if (!mem)
    goto error_create_memory;
  gst_vaapi_video_meta_replace (&meta, NULL);
  gst_buffer_append_memory (buffer, mem);

  if (priv->options & GST_VAAPI_VIDEO_BUFFER_POOL_OPTION_VIDEO_META) {
    GstVideoInfo *const vip = &priv->vmeta_vinfo;
    GstVideoMeta *vmeta;

    vmeta = gst_buffer_add_video_meta_full (buffer, 0,
        GST_VIDEO_INFO_FORMAT (vip), GST_VIDEO_INFO_WIDTH (vip),
        GST_VIDEO_INFO_HEIGHT (vip), GST_VIDEO_INFO_N_PLANES (vip),
        &GST_VIDEO_INFO_PLANE_OFFSET (vip, 0),
        &GST_VIDEO_INFO_PLANE_STRIDE (vip, 0));

    if (GST_VAAPI_IS_VIDEO_MEMORY (mem)) {
      vmeta->map = gst_video_meta_map_vaapi_memory;
      vmeta->unmap = gst_video_meta_unmap_vaapi_memory;
    }
  }
#if (USE_GLX || USE_EGL)
  if (priv->options & GST_VAAPI_VIDEO_BUFFER_POOL_OPTION_GL_TEXTURE_UPLOAD)
    gst_buffer_add_texture_upload_meta (buffer);
#endif

  *out_buffer_ptr = buffer;
  return GST_FLOW_OK;

  /* ERRORS */
error_no_allocator:
  {
    GST_ERROR_OBJECT (pool, "no GstAllocator in buffer pool");
    return GST_FLOW_ERROR;
  }
error_create_meta:
  {
    GST_ERROR_OBJECT (pool, "failed to allocate vaapi video meta");
    return GST_FLOW_ERROR;
  }
error_create_buffer:
  {
    GST_ERROR_OBJECT (pool, "failed to create video buffer");
    gst_vaapi_video_meta_unref (meta);
    return GST_FLOW_ERROR;
  }
error_create_memory:
  {
    GST_ERROR_OBJECT (pool, "failed to create video memory");
    gst_buffer_unref (buffer);
    gst_vaapi_video_meta_unref (meta);
    return GST_FLOW_ERROR;
  }
}