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78 lines
2.5 KiB
C
78 lines
2.5 KiB
C
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/*
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* gstvaapisurface_drm.c - VA surface abstraction (DRM interop)
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*
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* Copyright (C) 2014 Intel Corporation
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* Author: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either version 2.1
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* of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA
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*/
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#include "sysdeps.h"
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#include "gstvaapisurface_drm.h"
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#include "gstvaapisurface_priv.h"
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#include "gstvaapiimage_priv.h"
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#include "gstvaapibufferproxy_priv.h"
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static GstVaapiBufferProxy *
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gst_vaapi_surface_get_drm_buf_handle (GstVaapiSurface * surface, guint type)
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{
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GstVaapiBufferProxy *proxy;
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GstVaapiImage *image;
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image = gst_vaapi_surface_derive_image (surface);
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if (!image)
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goto error_derive_image;
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proxy =
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gst_vaapi_buffer_proxy_new_from_object (GST_VAAPI_OBJECT (surface),
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image->internal_image.buf, type, gst_vaapi_object_unref, image);
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if (!proxy)
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goto error_alloc_export_buffer;
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return proxy;
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/* ERRORS */
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error_derive_image:
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GST_ERROR ("failed to extract image handle from surface");
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return NULL;
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error_alloc_export_buffer:
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GST_ERROR ("failed to allocate export buffer proxy");
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gst_vaapi_object_unref (image);
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return NULL;
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}
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/**
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* gst_vaapi_surface_get_dma_buf_handle:
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* @surface: a #GstVaapiSurface
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*
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* If the underlying VA driver implementation supports it, this
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* function allows for returning a suitable dma_buf (DRM) buffer
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* handle as a #GstVaapiBufferProxy instance. The resulting buffer
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* handle is live until the last reference to the proxy gets
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* released. Besides, any further change to the parent VA @surface may
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* fail.
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*
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* Return value: the underlying buffer as a #GstVaapiBufferProxy
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* instance.
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*/
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GstVaapiBufferProxy *
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gst_vaapi_surface_get_dma_buf_handle (GstVaapiSurface * surface)
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{
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g_return_val_if_fail (surface != NULL, NULL);
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return gst_vaapi_surface_get_drm_buf_handle (surface,
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GST_VAAPI_BUFFER_MEMORY_TYPE_DMA_BUF);
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}
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