mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-11 02:46:33 +00:00
136 lines
3.6 KiB
C
136 lines
3.6 KiB
C
/*
|
|
* Copyright (C) 2010 Ole André Vadla Ravnås <oleavr@soundrop.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 "coremediactx.h"
|
|
|
|
#include <gst/gst.h>
|
|
|
|
typedef struct _GstApiProvider GstApiProvider;
|
|
|
|
typedef gpointer (*GstApiProviderObtainFunc) (GError ** error);
|
|
|
|
struct _GstApiProvider
|
|
{
|
|
GstCoreMediaApi api;
|
|
GstApiProviderObtainFunc obtain;
|
|
guint offset;
|
|
};
|
|
|
|
#define API_PROVIDER(AN, a_n) \
|
|
{ GST_API_##AN, (GstApiProviderObtainFunc) gst_##a_n##_api_obtain, \
|
|
G_STRUCT_OFFSET (GstCoreMediaCtx, a_n) }
|
|
|
|
static const GstApiProvider api_provider[] = {
|
|
API_PROVIDER (CORE_VIDEO, cv),
|
|
API_PROVIDER (CORE_MEDIA, cm),
|
|
#ifdef HAVE_IOS
|
|
#if 0
|
|
API_PROVIDER (MEDIA_TOOLBOX, mt),
|
|
API_PROVIDER (CELESTIAL, cel)
|
|
#endif
|
|
#else
|
|
API_PROVIDER (MIO, mio),
|
|
#endif
|
|
};
|
|
|
|
G_DEFINE_TYPE (GstCoreMediaCtx, gst_core_media_ctx, G_TYPE_OBJECT);
|
|
|
|
static void
|
|
gst_core_media_ctx_init (GstCoreMediaCtx * self)
|
|
{
|
|
}
|
|
|
|
static void
|
|
gst_core_media_ctx_dispose (GObject * object)
|
|
{
|
|
GstCoreMediaCtx *self = GST_CORE_MEDIA_CTX_CAST (object);
|
|
guint i;
|
|
|
|
for (i = 0; i != G_N_ELEMENTS (api_provider); i++) {
|
|
const GstApiProvider *ap = &api_provider[i];
|
|
gpointer *api_ptr = (gpointer *) ((guint8 *) self + ap->offset);
|
|
|
|
if (*api_ptr != NULL) {
|
|
g_object_unref (*api_ptr);
|
|
*api_ptr = NULL;
|
|
}
|
|
}
|
|
|
|
G_OBJECT_CLASS (gst_core_media_ctx_parent_class)->dispose (object);
|
|
}
|
|
|
|
static void
|
|
gst_core_media_ctx_class_init (GstCoreMediaCtxClass * klass)
|
|
{
|
|
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
|
|
|
|
gobject_class->dispose = gst_core_media_ctx_dispose;
|
|
}
|
|
|
|
GstCoreMediaCtx *
|
|
gst_core_media_ctx_new (GstCoreMediaApi required_apis, GError ** error)
|
|
{
|
|
GstCoreMediaCtx *ctx;
|
|
GArray *error_messages;
|
|
guint i;
|
|
|
|
ctx = g_object_new (GST_TYPE_CORE_MEDIA_CTX, NULL);
|
|
|
|
error_messages = g_array_new (TRUE, FALSE, sizeof (gchar *));
|
|
|
|
for (i = 0; i != G_N_ELEMENTS (api_provider); i++) {
|
|
const GstApiProvider *ap = &api_provider[i];
|
|
|
|
if ((required_apis & ap->api) != 0) {
|
|
gpointer *api_ptr = (gpointer *) ((guint8 *) ctx + ap->offset);
|
|
GError *tmp_error = NULL;
|
|
|
|
*api_ptr = ap->obtain (&tmp_error);
|
|
if (tmp_error != NULL) {
|
|
gchar *message_copy = g_strdup (tmp_error->message);
|
|
g_array_append_val (error_messages, message_copy);
|
|
g_clear_error (&tmp_error);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (error_messages->len != 0) {
|
|
gchar *errors_joined;
|
|
|
|
errors_joined = g_strjoinv ("\n\t* ", (gchar **) error_messages->data);
|
|
g_set_error (error, GST_RESOURCE_ERROR, GST_RESOURCE_ERROR_FAILED,
|
|
"Could not obtain required API%s:%s%s",
|
|
(error_messages->len == 1) ? "" : "s",
|
|
(error_messages->len == 1) ? " " : "\n\t* ", errors_joined);
|
|
g_free (errors_joined);
|
|
|
|
g_object_unref (ctx);
|
|
ctx = NULL;
|
|
}
|
|
|
|
for (i = 0; i != error_messages->len; i++)
|
|
g_free (g_array_index (error_messages, gchar *, i));
|
|
g_array_free (error_messages, TRUE);
|
|
|
|
return ctx;
|
|
}
|