gstreamer/sys/mediafoundation/plugin.c
Seungha Yang 5ffd2c64a0 mediafoundation: Call MFShutdown when destroying plugin
MFStartup and MFShutdown should be paired as documented in
https://docs.microsoft.com/en-us/windows/win32/api/mfapi/nf-mfapi-mfstartup#remarks
Otherwise valgrind-like tools would report false positive memory leak.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1512>
2020-08-13 07:05:36 +00:00

112 lines
3.5 KiB
C

/* GStreamer
* Copyright (C) 2019 Seungha Yang <seungha.yang@navercorp.com>
* Copyright (C) 2020 Seungha Yang <seungha@centricular.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstmfconfig.h"
#include <winapifamily.h>
#include <gst/gst.h>
#include "gstmfvideosrc.h"
#include "gstmfdevice.h"
#include "gstmfutils.h"
#include "gstmfh264enc.h"
#include "gstmfh265enc.h"
#include "gstmfvp9enc.h"
#include "gstmfaacenc.h"
#include "gstmfmp3enc.h"
GST_DEBUG_CATEGORY (gst_mf_debug);
GST_DEBUG_CATEGORY (gst_mf_utils_debug);
GST_DEBUG_CATEGORY (gst_mf_source_object_debug);
GST_DEBUG_CATEGORY (gst_mf_transform_debug);
#define GST_CAT_DEFAULT gst_mf_debug
static void
plugin_deinit (gpointer data)
{
MFShutdown ();
}
static gboolean
plugin_init (GstPlugin * plugin)
{
HRESULT hr;
GstRank rank = GST_RANK_SECONDARY;
/**
* plugin-mediafoundation:
*
* Since: 1.18
*/
GST_DEBUG_CATEGORY_INIT (gst_mf_debug, "mf", 0, "media foundation");
GST_DEBUG_CATEGORY_INIT (gst_mf_utils_debug,
"mfutils", 0, "media foundation utility functions");
GST_DEBUG_CATEGORY_INIT (gst_mf_source_object_debug,
"mfsourceobject", 0, "mfsourceobject");
GST_DEBUG_CATEGORY_INIT (gst_mf_transform_debug,
"mftransform", 0, "mftransform");
hr = MFStartup (MF_VERSION, MFSTARTUP_NOSOCKET);
if (!gst_mf_result (hr)) {
GST_WARNING ("MFStartup failure, hr: 0x%x", hr);
return TRUE;
}
/* mfvideosrc should be primary rank for UWP */
#if (GST_MF_WINAPI_APP && !GST_MF_WINAPI_DESKTOP)
rank = GST_RANK_PRIMARY + 1;
#endif
gst_element_register (plugin, "mfvideosrc", rank, GST_TYPE_MF_VIDEO_SRC);
gst_device_provider_register (plugin, "mfdeviceprovider",
rank, GST_TYPE_MF_DEVICE_PROVIDER);
gst_mf_h264_enc_plugin_init (plugin, GST_RANK_SECONDARY);
gst_mf_h265_enc_plugin_init (plugin, GST_RANK_SECONDARY);
gst_mf_vp9_enc_plugin_init (plugin, GST_RANK_SECONDARY);
gst_mf_aac_enc_plugin_init (plugin, GST_RANK_SECONDARY);
gst_mf_mp3_enc_plugin_init (plugin, GST_RANK_SECONDARY);
/* So that call MFShutdown() when this plugin is no more used
* (i.e., gst_deinit). Otherwise valgrind-like tools would complain
* about un-released media foundation resources.
*
* NOTE: MFStartup and MFShutdown can be called multiple times, but the number
* of each MFStartup and MFShutdown call should be identical. This rule is
* simliar to that of CoInitialize/CoUninitialize pair */
g_object_set_data_full (G_OBJECT (plugin),
"plugin-mediafoundation-shutdown", "shutdown-data",
(GDestroyNotify) plugin_deinit);
return TRUE;
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
mediafoundation,
"Microsoft Media Foundation plugin",
plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)