Skip to content

Commit

Permalink
Browse files Browse the repository at this point in the history
gio: allow per feature registration
  • Loading branch information
Stéphane Cerveau authored and GStreamer Marge Bot committed Mar 16, 2021
1 parent 160ba7d commit 5dcdc09
Show file tree
Hide file tree
Showing 16 changed files with 291 additions and 254 deletions.
243 changes: 7 additions & 236 deletions gst/gio/gstgio.c
Expand Up @@ -2,7 +2,7 @@
*
* Copyright (C) 2007 Rene Stadler <mail@renestadler.de>
* Copyright (C) 2007 Sebastian Dröge <sebastian.droege@collabora.co.uk>
*
*
* 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
Expand All @@ -23,246 +23,17 @@
#include "config.h"
#endif

#include "gstgio.h"
#include "gstgiosink.h"
#include "gstgiosrc.h"
#include "gstgiostreamsink.h"
#include "gstgiostreamsrc.h"

#include <string.h>

GST_DEBUG_CATEGORY_STATIC (gst_gio_debug);
#define GST_CAT_DEFAULT gst_gio_debug

/* @func_name: Name of the GIO function, for debugging messages.
* @err: Error location. *err may be NULL, but err must be non-NULL.
* @ret: Flow return location. May be NULL. Is set to either #GST_FLOW_ERROR
* or #GST_FLOW_FLUSHING.
*
* Returns: TRUE to indicate a handled error. Error at given location err will
* be freed and *err will be set to NULL. A FALSE return indicates an unhandled
* error: The err location is unchanged and guaranteed to be != NULL. ret, if
* given, is set to GST_FLOW_ERROR.
*/
gboolean
gst_gio_error (gpointer element, const gchar * func_name, GError ** err,
GstFlowReturn * ret)
{
gboolean handled = TRUE;

if (ret)
*ret = GST_FLOW_ERROR;

if (GST_GIO_ERROR_MATCHES (*err, CANCELLED)) {
GST_DEBUG_OBJECT (element, "blocking I/O call cancelled (%s)", func_name);
if (ret)
*ret = GST_FLOW_FLUSHING;
} else if (*err != NULL) {
handled = FALSE;
} else {
GST_ELEMENT_ERROR (element, LIBRARY, FAILED, (NULL),
("%s call failed without error set", func_name));
}

if (handled)
g_clear_error (err);

return handled;
}

GstFlowReturn
gst_gio_seek (gpointer element, GSeekable * stream, guint64 offset,
GCancellable * cancel)
{
gboolean success;
GstFlowReturn ret;
GError *err = NULL;

GST_LOG_OBJECT (element, "seeking to offset %" G_GINT64_FORMAT, offset);

success = g_seekable_seek (stream, offset, G_SEEK_SET, cancel, &err);

if (success)
ret = GST_FLOW_OK;
else if (!gst_gio_error (element, "g_seekable_seek", &err, &ret)) {
GST_ELEMENT_ERROR (element, RESOURCE, SEEK, (NULL),
("Could not seek: %s", err->message));
g_clear_error (&err);
}

return ret;
}

static gpointer
_internal_get_supported_protocols (gpointer data)
{
const gchar *const *schemes;
gchar **our_schemes;
guint num;
gint i, j;

schemes = g_vfs_get_supported_uri_schemes (g_vfs_get_default ());

if (schemes != NULL)
num = g_strv_length ((gchar **) schemes);
else
num = 0;

if (num == 0) {
GST_WARNING ("No GIO supported URI schemes found");
return NULL;
}

our_schemes = g_new0 (gchar *, num + 1);

/* - Filter http/https as we can't support the icy stuff with GIO.
* Use souphttpsrc if you need that.
* - Filter cdda as it doesn't support musicbrainz stuff and everything
* else one expects from a cdda source. Use cdparanoiasrc or cdiosrc
* for cdda.
*/
for (i = 0, j = 0; i < num; i++) {
if (strcmp (schemes[i], "http") == 0 || strcmp (schemes[i], "https") == 0
|| strcmp (schemes[i], "cdda") == 0)
continue;

our_schemes[j] = g_strdup (schemes[i]);
j++;
}

return our_schemes;
}

static gchar **
gst_gio_get_supported_protocols (void)
{
static GOnce once = G_ONCE_INIT;

g_once (&once, _internal_get_supported_protocols, NULL);
return (gchar **) once.retval;
}

static GstURIType
gst_gio_uri_handler_get_type_sink (GType type)
{
return GST_URI_SINK;
}

static GstURIType
gst_gio_uri_handler_get_type_src (GType type)
{
return GST_URI_SRC;
}

static const gchar *const *
gst_gio_uri_handler_get_protocols (GType type)
{
static const gchar *const *protocols = NULL;

if (!protocols)
protocols = (const gchar * const *) gst_gio_get_supported_protocols ();

return protocols;
}

static gchar *
gst_gio_uri_handler_get_uri (GstURIHandler * handler)
{
GstElement *element = GST_ELEMENT (handler);
gchar *uri;

g_return_val_if_fail (GST_IS_ELEMENT (element), NULL);

g_object_get (G_OBJECT (element), "location", &uri, NULL);

return uri;
}

static gboolean
gst_gio_uri_handler_set_uri (GstURIHandler * handler, const gchar * uri,
GError ** error)
{
GstElement *element = GST_ELEMENT (handler);

g_return_val_if_fail (GST_IS_ELEMENT (element), FALSE);

if (GST_STATE (element) == GST_STATE_PLAYING ||
GST_STATE (element) == GST_STATE_PAUSED) {
g_set_error (error, GST_URI_ERROR, GST_URI_ERROR_BAD_STATE,
"Changing the 'location' property while the element is running is "
"not supported");
return FALSE;
}

g_object_set (G_OBJECT (element), "location", uri, NULL);
return TRUE;
}

static void
gst_gio_uri_handler_init (gpointer g_iface, gpointer iface_data)
{
GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface;
gboolean sink = GPOINTER_TO_INT (iface_data); /* See in do_init below. */

if (sink)
iface->get_type = gst_gio_uri_handler_get_type_sink;
else
iface->get_type = gst_gio_uri_handler_get_type_src;
iface->get_protocols = gst_gio_uri_handler_get_protocols;
iface->get_uri = gst_gio_uri_handler_get_uri;
iface->set_uri = gst_gio_uri_handler_set_uri;
}

void
gst_gio_uri_handler_do_init (GType type)
{
GInterfaceInfo uri_handler_info = {
gst_gio_uri_handler_init,
NULL,
NULL
};

/* Store information for uri_handler_init to use for distinguishing the
* element types. This lets us use a single interface implementation for both
* classes. */
uri_handler_info.interface_data = GINT_TO_POINTER (g_type_is_a (type,
GST_TYPE_BASE_SINK));

g_type_add_interface_static (type, GST_TYPE_URI_HANDLER, &uri_handler_info);
}

#define GIO_GVFS_MOUNTS_DIR GIO_PREFIX \
G_DIR_SEPARATOR_S "share" \
G_DIR_SEPARATOR_S "gvfs" \
G_DIR_SEPARATOR_S "mounts"
#include "gstgioelements.h"

static gboolean
plugin_init (GstPlugin * plugin)
{
gboolean ret = TRUE;

GST_DEBUG_CATEGORY_INIT (gst_gio_debug, "gio", 0, "GIO elements");

gst_plugin_add_dependency_simple (plugin, NULL, GIO_MODULE_DIR, NULL,
GST_PLUGIN_DEPENDENCY_FLAG_NONE);
gst_plugin_add_dependency_simple (plugin, NULL, GIO_GVFS_MOUNTS_DIR, NULL,
GST_PLUGIN_DEPENDENCY_FLAG_NONE);

/* FIXME: Rank is MARGINAL for now, should be at least SECONDARY+1 in the future
* to replace gnomevfssink/src. For testing purposes PRIMARY+1 one makes sense
* so it gets autoplugged and preferred over filesrc/sink. */

ret &= gst_element_register (plugin, "giosink", GST_RANK_SECONDARY,
GST_TYPE_GIO_SINK);

ret &= gst_element_register (plugin, "giosrc", GST_RANK_SECONDARY,
GST_TYPE_GIO_SRC);

ret &= gst_element_register (plugin, "giostreamsink", GST_RANK_NONE,
GST_TYPE_GIO_STREAM_SINK);
gboolean ret = FALSE;

ret &= gst_element_register (plugin, "giostreamsrc", GST_RANK_NONE,
GST_TYPE_GIO_STREAM_SRC);
ret |= GST_ELEMENT_REGISTER (giosink, plugin);
ret |= GST_ELEMENT_REGISTER (giosrc, plugin);
ret |= GST_ELEMENT_REGISTER (giostreamsink, plugin);
ret |= GST_ELEMENT_REGISTER (giostreamsrc, plugin);

return ret;
}
Expand Down
1 change: 1 addition & 0 deletions gst/gio/gstgiobasesink.c
Expand Up @@ -24,6 +24,7 @@
#endif

#include "gstgiobasesink.h"
#include "gstgioelements.h"

GST_DEBUG_CATEGORY_STATIC (gst_gio_base_sink_debug);
#define GST_CAT_DEFAULT gst_gio_base_sink_debug
Expand Down
3 changes: 2 additions & 1 deletion gst/gio/gstgiobasesink.h
Expand Up @@ -22,8 +22,9 @@
#ifndef __GST_GIO_BASE_SINK_H__
#define __GST_GIO_BASE_SINK_H__

#include "gstgio.h"

#include <gst/gst.h>
#include <gio/gio.h>
#include <gst/base/gstbasesink.h>

G_BEGIN_DECLS
Expand Down
3 changes: 1 addition & 2 deletions gst/gio/gstgiobasesrc.c
Expand Up @@ -24,8 +24,7 @@
#endif

#include "gstgiobasesrc.h"

#include <gst/base/gsttypefindhelper.h>
#include "gstgioelements.h"

GST_DEBUG_CATEGORY_STATIC (gst_gio_base_src_debug);
#define GST_CAT_DEFAULT gst_gio_base_src_debug
Expand Down
4 changes: 2 additions & 2 deletions gst/gio/gstgiobasesrc.h
Expand Up @@ -22,8 +22,8 @@
#ifndef __GST_GIO_BASE_SRC_H__
#define __GST_GIO_BASE_SRC_H__

#include "gstgio.h"

#include <gst/gst.h>
#include <gio/gio.h>
#include <gst/base/gstbasesrc.h>

G_BEGIN_DECLS
Expand Down

0 comments on commit 5dcdc09

Please sign in to comment.