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80 lines
2.6 KiB
C
80 lines
2.6 KiB
C
/* GStreamer
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* Copyright (C) 2011 Collabora Ltd.
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* Copyright (C) 2011 Intel
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*
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* Author: Nicolas Dufresne <nicolas.dufresne@collabora.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 Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 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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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "gstsurfaceconverter.h"
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#include "gstsurfacemeta.h"
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/**
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* SECTION:gstsurfaceconverter
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* @short_description: Interface for #GstSurfaceBuffer convertion
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*
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* Objects implementing this interface are used as a convertion context. This
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* allow element optimizing the upload by keeping required resources between
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* uploads. The context must be discarded when the pipeline goes to
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* #GST_STATE_NULL or renewed whenever the caps are changed.
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* <note>
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* The GstVideoContext interface is unstable API and may change in future.
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* One can define GST_USE_UNSTABLE_API to acknowledge and avoid this warning.
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* </note>
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*
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* <refsect2>
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* <title>Example uploading to GL texture</title>
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* |[
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* if (G_UNLIKELY (priv->converter == NULL))
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* priv->converter = gst_surface_buffer_create_converter (surface, "opengl", &value);
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*
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* gst_surface_converter_uplaod (priv->converter, surface);
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* ]|
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* </refsect2>
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*/
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G_DEFINE_INTERFACE (GstSurfaceConverter, gst_surface_converter, G_TYPE_INVALID);
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static void
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gst_surface_converter_default_init (GstSurfaceConverterInterface * iface)
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{
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/* default virtual functions */
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iface->upload = NULL;
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}
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/**
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* gst_surface_converter_upload:
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* @converter: a #GstSurfaceConverter
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* @buffer: the #GstBuffer to upload
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*
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* Convert and uploads the #GstSurfaceBuffer to the converter destination.
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*
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* Returns: #TRUE on success, #FALSE otherwise
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*/
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gboolean
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gst_surface_converter_upload (GstSurfaceConverter * converter,
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GstBuffer * buffer)
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{
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g_return_val_if_fail (GST_IS_SURFACE_CONVERTER (converter), FALSE);
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g_return_val_if_fail (GST_IS_BUFFER (buffer), FALSE);
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return GST_SURFACE_CONVERTER_GET_IFACE (converter)->upload (converter,
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buffer);
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}
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