GstAllocator * gst_vaapi_dmabuf_allocator_new (GstVaapiDisplay * display, const GstVideoInfo * vip, guint flags) { GstAllocator *allocator = NULL; GstVaapiSurface *surface = NULL; GstVaapiImage *image = NULL; GstVideoInfo alloc_info; g_return_val_if_fail (display != NULL, NULL); g_return_val_if_fail (vip != NULL, NULL); do { surface = gst_vaapi_surface_new_full (display, vip, flags); if (!surface) break; image = gst_vaapi_surface_derive_image (surface); if (!image || !gst_vaapi_image_map (image)) break; gst_video_info_set_format (&alloc_info, GST_VIDEO_INFO_FORMAT (vip), GST_VIDEO_INFO_WIDTH (vip), GST_VIDEO_INFO_HEIGHT (vip)); gst_video_info_update_from_image (&alloc_info, image); gst_vaapi_image_unmap (image); allocator = gst_dmabuf_allocator_new (); if (!allocator) break; gst_allocator_set_vaapi_video_info (allocator, &alloc_info, flags); } while (0); gst_vaapi_object_replace (&image, NULL); gst_vaapi_object_replace (&surface, NULL); return allocator; }
static gboolean gst_v4l2_buffer_pool_set_config (GstBufferPool * bpool, GstStructure * config) { GstV4l2BufferPool *pool = GST_V4L2_BUFFER_POOL (bpool); GstV4l2Object *obj = pool->obj; GstCaps *caps; guint size, min_buffers, max_buffers; GstAllocator *allocator; GstAllocationParams params; gboolean can_allocate = FALSE; gboolean updated = FALSE; gboolean ret; pool->add_videometa = gst_buffer_pool_config_has_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META); /* parse the config and keep around */ if (!gst_buffer_pool_config_get_params (config, &caps, &size, &min_buffers, &max_buffers)) goto wrong_config; if (!gst_buffer_pool_config_get_allocator (config, &allocator, ¶ms)) goto wrong_config; GST_DEBUG_OBJECT (pool, "config %" GST_PTR_FORMAT, config); if (pool->allocator) gst_object_unref (pool->allocator); pool->allocator = NULL; switch (obj->mode) { case GST_V4L2_IO_DMABUF: pool->allocator = gst_dmabuf_allocator_new (); can_allocate = GST_V4L2_ALLOCATOR_CAN_ALLOCATE (pool->vallocator, MMAP); break; case GST_V4L2_IO_MMAP: can_allocate = GST_V4L2_ALLOCATOR_CAN_ALLOCATE (pool->vallocator, MMAP); break; case GST_V4L2_IO_USERPTR: can_allocate = GST_V4L2_ALLOCATOR_CAN_ALLOCATE (pool->vallocator, USERPTR); break; case GST_V4L2_IO_DMABUF_IMPORT: can_allocate = GST_V4L2_ALLOCATOR_CAN_ALLOCATE (pool->vallocator, DMABUF); break; case GST_V4L2_IO_RW: pool->allocator = g_object_ref (allocator); pool->params = params; /* No need to change the configuration */ goto done; break; default: g_assert_not_reached (); break; } if (min_buffers < GST_V4L2_MIN_BUFFERS) { updated = TRUE; min_buffers = GST_V4L2_MIN_BUFFERS; GST_INFO_OBJECT (pool, "increasing minimum buffers to %u", min_buffers); } if (max_buffers > VIDEO_MAX_FRAME || max_buffers == 0) { updated = TRUE; max_buffers = VIDEO_MAX_FRAME; GST_INFO_OBJECT (pool, "reducing maximum buffers to %u", max_buffers); } if (min_buffers > max_buffers) { updated = TRUE; min_buffers = max_buffers; GST_INFO_OBJECT (pool, "reducing minimum buffers to %u", min_buffers); } else if (min_buffers != max_buffers) { if (!can_allocate) { updated = TRUE; max_buffers = min_buffers; GST_INFO_OBJECT (pool, "can't allocate, setting maximum to minimum"); } } if (!pool->add_videometa && obj->need_video_meta) { GST_INFO_OBJECT (pool, "adding needed video meta"); updated = TRUE; gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META); } if (updated) gst_buffer_pool_config_set_params (config, caps, size, min_buffers, max_buffers); /* keep a GstVideoInfo with defaults for the when we need to copy */ gst_video_info_from_caps (&pool->caps_info, caps); done: ret = GST_BUFFER_POOL_CLASS (parent_class)->set_config (bpool, config); /* If anything was changed documentation recommand to return FALSE */ return !updated && ret; /* ERRORS */ wrong_config: { GST_ERROR_OBJECT (pool, "invalid config %" GST_PTR_FORMAT, config); return FALSE; } }