gstreamer/ext/gnomevfs/gstgnomevfssrc.c
2011-03-27 17:16:10 +02:00

900 lines
26 KiB
C

/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
* 2001 Bastien Nocera <hadess@hadess.net>
* 2002 Kristian Rietveld <kris@gtk.org>
* 2002,2003 Colin Walters <walters@gnu.org>
*
* gnomevfssrc.c:
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/**
* SECTION:element-gnomevfssrc
* @see_also: #GstFileSrc, #GstGnomeVFSSink
*
* This plugin reads data from a local or remote location specified
* by an URI. This location can be specified using any protocol supported by
* the GnomeVFS library. Common protocols are 'file', 'http', 'ftp', or 'smb'.
*
* In case the #GstGnomeVFSSrc:iradio-mode property is set and the
* location is a http resource, gnomevfssrc will send special icecast http
* headers to the server to request additional icecast metainformation. If
* the server is not an icecast server, it will display the same behaviour
* as if the #GstGnomeVFSSrc:iradio-mode property was not set. However,
* if the server is in fact an icecast server, gnomevfssrc will output
* data with a media type of application/x-icy, in which case you will
* need to use the #GstICYDemux element as follow-up element to extract
* the icecast meta data and to determine the underlying media type.
*
* <refsect2>
* <title>Example launch lines</title>
* |[
* gst-launch -v gnomevfssrc location=file:///home/joe/foo.xyz ! fakesink
* ]| The above pipeline will simply read a local file and do nothing with the
* data read. Instead of gnomevfssrc, we could just as well have used the
* filesrc element here.
* |[
* gst-launch -v gnomevfssrc location=smb://othercomputer/foo.xyz ! filesink location=/home/joe/foo.xyz
* ]| The above pipeline will copy a file from a remote host to the local file
* system using the Samba protocol.
* |[
* gst-launch -v gnomevfssrc location=http://music.foobar.com/demo.mp3 ! mad ! audioconvert ! audioresample ! alsasink
* ]| The above pipeline will read and decode and play an mp3 file from a
* web server using the http protocol.
* </refsect2>
*/
#define BROKEN_SIG 1
/*#undef BROKEN_SIG */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gst/gst-i18n-plugin.h"
#include "gstgnomevfssrc.h"
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/mman.h>
#include <errno.h>
#include <string.h>
#include <gst/gst.h>
#include <gst/tag/tag.h>
/* gnome-vfs.h doesn't include the following header, which we need: */
#include <libgnomevfs/gnome-vfs-standard-callbacks.h>
GST_DEBUG_CATEGORY_STATIC (gnomevfssrc_debug);
#define GST_CAT_DEFAULT gnomevfssrc_debug
static GStaticMutex count_lock = G_STATIC_MUTEX_INIT;
static gint ref_count = 0;
static gboolean vfs_owner = FALSE;
static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
enum
{
ARG_0,
ARG_HANDLE,
ARG_LOCATION,
ARG_IRADIO_MODE,
ARG_IRADIO_NAME,
ARG_IRADIO_GENRE,
ARG_IRADIO_URL,
ARG_IRADIO_TITLE
};
static void gst_gnome_vfs_src_base_init (gpointer g_class);
static void gst_gnome_vfs_src_class_init (GstGnomeVFSSrcClass * klass);
static void gst_gnome_vfs_src_init (GstGnomeVFSSrc * gnomevfssrc);
static void gst_gnome_vfs_src_finalize (GObject * object);
static void gst_gnome_vfs_src_uri_handler_init (gpointer g_iface,
gpointer iface_data);
static void gst_gnome_vfs_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_gnome_vfs_src_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static gboolean gst_gnome_vfs_src_stop (GstBaseSrc * src);
static gboolean gst_gnome_vfs_src_start (GstBaseSrc * src);
static gboolean gst_gnome_vfs_src_is_seekable (GstBaseSrc * src);
static gboolean gst_gnome_vfs_src_check_get_range (GstBaseSrc * src);
static gboolean gst_gnome_vfs_src_get_size (GstBaseSrc * src, guint64 * size);
static GstFlowReturn gst_gnome_vfs_src_create (GstBaseSrc * basesrc,
guint64 offset, guint size, GstBuffer ** buffer);
static gboolean gst_gnome_vfs_src_query (GstBaseSrc * src, GstQuery * query);
static GstElementClass *parent_class = NULL;
GType
gst_gnome_vfs_src_get_type (void)
{
static GType gnomevfssrc_type = 0;
if (!gnomevfssrc_type) {
static const GTypeInfo gnomevfssrc_info = {
sizeof (GstGnomeVFSSrcClass),
gst_gnome_vfs_src_base_init,
NULL,
(GClassInitFunc) gst_gnome_vfs_src_class_init,
NULL,
NULL,
sizeof (GstGnomeVFSSrc),
0,
(GInstanceInitFunc) gst_gnome_vfs_src_init,
};
static const GInterfaceInfo urihandler_info = {
gst_gnome_vfs_src_uri_handler_init,
NULL,
NULL
};
gnomevfssrc_type =
g_type_register_static (GST_TYPE_BASE_SRC,
"GstGnomeVFSSrc", &gnomevfssrc_info, 0);
g_type_add_interface_static (gnomevfssrc_type, GST_TYPE_URI_HANDLER,
&urihandler_info);
}
return gnomevfssrc_type;
}
static void
gst_gnome_vfs_src_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&srctemplate));
gst_element_class_set_details_simple (element_class,
"GnomeVFS Source", "Source/File",
"Read from any GnomeVFS-supported file",
"Bastien Nocera <hadess@hadess.net>, "
"GStreamer maintainers <gstreamer-devel@lists.sourceforge.net>");
GST_DEBUG_CATEGORY_INIT (gnomevfssrc_debug, "gnomevfssrc", 0,
"Gnome-VFS Source");
}
static void
gst_gnome_vfs_src_class_init (GstGnomeVFSSrcClass * klass)
{
GObjectClass *gobject_class;
GstBaseSrcClass *gstbasesrc_class;
gobject_class = G_OBJECT_CLASS (klass);
gstbasesrc_class = GST_BASE_SRC_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
gobject_class->finalize = gst_gnome_vfs_src_finalize;
gobject_class->set_property = gst_gnome_vfs_src_set_property;
gobject_class->get_property = gst_gnome_vfs_src_get_property;
/* properties */
gst_element_class_install_std_props (GST_ELEMENT_CLASS (klass),
"location", ARG_LOCATION, G_PARAM_READWRITE, NULL);
g_object_class_install_property (gobject_class,
ARG_HANDLE,
g_param_spec_boxed ("handle",
"GnomeVFSHandle", "Handle for GnomeVFS",
GST_TYPE_GNOME_VFS_HANDLE,
GST_PARAM_MUTABLE_READY | G_PARAM_READWRITE |
G_PARAM_STATIC_STRINGS));
/* icecast stuff */
g_object_class_install_property (gobject_class,
ARG_IRADIO_MODE,
g_param_spec_boolean ("iradio-mode",
"iradio-mode",
"Enable internet radio mode (extraction of shoutcast/icecast metadata)",
FALSE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class,
ARG_IRADIO_NAME,
g_param_spec_string ("iradio-name",
"iradio-name", "Name of the stream", NULL,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, ARG_IRADIO_GENRE,
g_param_spec_string ("iradio-genre", "iradio-genre",
"Genre of the stream", NULL,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, ARG_IRADIO_URL,
g_param_spec_string ("iradio-url", "iradio-url",
"Homepage URL for radio stream", NULL,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, ARG_IRADIO_TITLE,
g_param_spec_string ("iradio-title", "iradio-title",
"Name of currently playing song", NULL,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
gstbasesrc_class->start = GST_DEBUG_FUNCPTR (gst_gnome_vfs_src_start);
gstbasesrc_class->stop = GST_DEBUG_FUNCPTR (gst_gnome_vfs_src_stop);
gstbasesrc_class->get_size = GST_DEBUG_FUNCPTR (gst_gnome_vfs_src_get_size);
gstbasesrc_class->is_seekable =
GST_DEBUG_FUNCPTR (gst_gnome_vfs_src_is_seekable);
gstbasesrc_class->check_get_range =
GST_DEBUG_FUNCPTR (gst_gnome_vfs_src_check_get_range);
gstbasesrc_class->create = GST_DEBUG_FUNCPTR (gst_gnome_vfs_src_create);
gstbasesrc_class->query = GST_DEBUG_FUNCPTR (gst_gnome_vfs_src_query);
}
static void
gst_gnome_vfs_src_init (GstGnomeVFSSrc * gnomevfssrc)
{
gnomevfssrc->uri = NULL;
gnomevfssrc->uri_name = NULL;
gnomevfssrc->handle = NULL;
gnomevfssrc->curoffset = 0;
gnomevfssrc->seekable = FALSE;
gnomevfssrc->iradio_mode = FALSE;
gnomevfssrc->http_callbacks_pushed = FALSE;
gnomevfssrc->iradio_name = NULL;
gnomevfssrc->iradio_genre = NULL;
gnomevfssrc->iradio_url = NULL;
gnomevfssrc->iradio_title = NULL;
g_static_mutex_lock (&count_lock);
if (ref_count == 0) {
/* gnome vfs engine init */
if (gnome_vfs_initialized () == FALSE) {
gnome_vfs_init ();
vfs_owner = TRUE;
}
}
ref_count++;
g_static_mutex_unlock (&count_lock);
}
static void
gst_gnome_vfs_src_finalize (GObject * object)
{
GstGnomeVFSSrc *src = GST_GNOME_VFS_SRC (object);
g_static_mutex_lock (&count_lock);
ref_count--;
if (ref_count == 0 && vfs_owner) {
if (gnome_vfs_initialized () == TRUE) {
gnome_vfs_shutdown ();
}
}
g_static_mutex_unlock (&count_lock);
if (src->uri) {
gnome_vfs_uri_unref (src->uri);
src->uri = NULL;
}
g_free (src->uri_name);
src->uri_name = NULL;
g_free (src->iradio_name);
src->iradio_name = NULL;
g_free (src->iradio_genre);
src->iradio_genre = NULL;
g_free (src->iradio_url);
src->iradio_url = NULL;
g_free (src->iradio_title);
src->iradio_title = NULL;
G_OBJECT_CLASS (parent_class)->finalize (object);
}
/*
* URI interface support.
*/
static GstURIType
gst_gnome_vfs_src_uri_get_type (void)
{
return GST_URI_SRC;
}
static gchar **
gst_gnome_vfs_src_uri_get_protocols (void)
{
return gst_gnomevfs_get_supported_uris ();
}
static const gchar *
gst_gnome_vfs_src_uri_get_uri (GstURIHandler * handler)
{
GstGnomeVFSSrc *src = GST_GNOME_VFS_SRC (handler);
return src->uri_name;
}
static gboolean
gst_gnome_vfs_src_uri_set_uri (GstURIHandler * handler, const gchar * uri)
{
GstGnomeVFSSrc *src = GST_GNOME_VFS_SRC (handler);
if (GST_STATE (src) == GST_STATE_PLAYING ||
GST_STATE (src) == GST_STATE_PAUSED)
return FALSE;
g_object_set (G_OBJECT (src), "location", uri, NULL);
return TRUE;
}
static void
gst_gnome_vfs_src_uri_handler_init (gpointer g_iface, gpointer iface_data)
{
GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface;
iface->get_type = gst_gnome_vfs_src_uri_get_type;
iface->get_protocols = gst_gnome_vfs_src_uri_get_protocols;
iface->get_uri = gst_gnome_vfs_src_uri_get_uri;
iface->set_uri = gst_gnome_vfs_src_uri_set_uri;
}
static void
gst_gnome_vfs_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstGnomeVFSSrc *src;
src = GST_GNOME_VFS_SRC (object);
switch (prop_id) {
case ARG_LOCATION:{
const gchar *new_location;
/* the element must be stopped or paused in order to do this */
if (GST_STATE (src) == GST_STATE_PLAYING ||
GST_STATE (src) == GST_STATE_PAUSED)
break;
if (src->uri) {
gnome_vfs_uri_unref (src->uri);
src->uri = NULL;
}
if (src->uri_name) {
g_free (src->uri_name);
src->uri_name = NULL;
}
new_location = g_value_get_string (value);
if (new_location) {
src->uri_name = gst_gnome_vfs_location_to_uri_string (new_location);
src->uri = gnome_vfs_uri_new (src->uri_name);
}
break;
}
case ARG_HANDLE:
if (GST_STATE (src) == GST_STATE_NULL ||
GST_STATE (src) == GST_STATE_READY) {
if (src->uri) {
gnome_vfs_uri_unref (src->uri);
src->uri = NULL;
}
if (src->uri_name) {
g_free (src->uri_name);
src->uri_name = NULL;
}
src->handle = g_value_get_boxed (value);
}
break;
case ARG_IRADIO_MODE:
src->iradio_mode = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_gnome_vfs_src_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstGnomeVFSSrc *src;
src = GST_GNOME_VFS_SRC (object);
switch (prop_id) {
case ARG_LOCATION:
g_value_set_string (value, src->uri_name);
break;
case ARG_HANDLE:
g_value_set_boxed (value, src->handle);
break;
case ARG_IRADIO_MODE:
g_value_set_boolean (value, src->iradio_mode);
break;
case ARG_IRADIO_NAME:
g_value_set_string (value, src->iradio_name);
break;
case ARG_IRADIO_GENRE:
g_value_set_string (value, src->iradio_genre);
break;
case ARG_IRADIO_URL:
g_value_set_string (value, src->iradio_url);
break;
case ARG_IRADIO_TITLE:
g_value_set_string (value, src->iradio_title);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static char *
gst_gnome_vfs_src_unicodify (const char *str)
{
const gchar *env_vars[] = { "GST_ICY_TAG_ENCODING",
"GST_TAG_ENCODING", NULL
};
return gst_tag_freeform_string_to_utf8 (str, -1, env_vars);
}
static void
gst_gnome_vfs_src_send_additional_headers_callback (gconstpointer in,
gsize in_size, gpointer out, gsize out_size, gpointer callback_data)
{
GstGnomeVFSSrc *src = GST_GNOME_VFS_SRC (callback_data);
GnomeVFSModuleCallbackAdditionalHeadersOut *out_args =
(GnomeVFSModuleCallbackAdditionalHeadersOut *) out;
if (!src->iradio_mode)
return;
GST_DEBUG_OBJECT (src, "sending headers\n");
out_args->headers = g_list_append (out_args->headers,
g_strdup ("icy-metadata:1\r\n"));
}
static void
gst_gnome_vfs_src_received_headers_callback (gconstpointer in,
gsize in_size, gpointer out, gsize out_size, gpointer callback_data)
{
GList *i;
gint icy_metaint;
GstGnomeVFSSrc *src = GST_GNOME_VFS_SRC (callback_data);
GnomeVFSModuleCallbackReceivedHeadersIn *in_args =
(GnomeVFSModuleCallbackReceivedHeadersIn *) in;
/* This is only used for internet radio stuff right now */
if (!src->iradio_mode)
return;
GST_DEBUG_OBJECT (src, "receiving internet radio metadata\n");
/* FIXME: Could we use "Accept-Ranges: bytes"
* http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.5
* to enable pull-mode?
*/
for (i = in_args->headers; i; i = i->next) {
char *data = (char *) i->data;
char *value = strchr (data, ':');
char *key;
if (!value)
continue;
value++;
g_strstrip (value);
if (!strlen (value))
continue;
GST_LOG_OBJECT (src, "data %s", data);
/* Icecast stuff */
if (strncmp (data, "icy-metaint:", 12) == 0) { /* ugh */
if (sscanf (data + 12, "%d", &icy_metaint) == 1) {
if (icy_metaint > 0) {
GstCaps *icy_caps;
icy_caps = gst_caps_new_simple ("application/x-icy",
"metadata-interval", G_TYPE_INT, icy_metaint, NULL);
gst_pad_set_caps (GST_BASE_SRC_PAD (src), icy_caps);
gst_caps_unref (icy_caps);
}
}
continue;
}
if (!strncmp (data, "icy-", 4))
key = data + 4;
else
continue;
GST_DEBUG_OBJECT (src, "key: %s", key);
if (!strncmp (key, "name", 4)) {
g_free (src->iradio_name);
src->iradio_name = gst_gnome_vfs_src_unicodify (value);
if (src->iradio_name)
g_object_notify (G_OBJECT (src), "iradio-name");
} else if (!strncmp (key, "genre", 5)) {
g_free (src->iradio_genre);
src->iradio_genre = gst_gnome_vfs_src_unicodify (value);
if (src->iradio_genre)
g_object_notify (G_OBJECT (src), "iradio-genre");
} else if (!strncmp (key, "url", 3)) {
g_free (src->iradio_url);
src->iradio_url = gst_gnome_vfs_src_unicodify (value);
if (src->iradio_url)
g_object_notify (G_OBJECT (src), "iradio-url");
}
}
}
static void
gst_gnome_vfs_src_push_callbacks (GstGnomeVFSSrc * src)
{
if (src->http_callbacks_pushed)
return;
GST_DEBUG_OBJECT (src, "pushing callbacks");
gnome_vfs_module_callback_push
(GNOME_VFS_MODULE_CALLBACK_HTTP_SEND_ADDITIONAL_HEADERS,
gst_gnome_vfs_src_send_additional_headers_callback, src, NULL);
gnome_vfs_module_callback_push
(GNOME_VFS_MODULE_CALLBACK_HTTP_RECEIVED_HEADERS,
gst_gnome_vfs_src_received_headers_callback, src, NULL);
src->http_callbacks_pushed = TRUE;
}
static void
gst_gnome_vfs_src_pop_callbacks (GstGnomeVFSSrc * src)
{
if (!src->http_callbacks_pushed)
return;
GST_DEBUG_OBJECT (src, "popping callbacks");
gnome_vfs_module_callback_pop
(GNOME_VFS_MODULE_CALLBACK_HTTP_SEND_ADDITIONAL_HEADERS);
gnome_vfs_module_callback_pop
(GNOME_VFS_MODULE_CALLBACK_HTTP_RECEIVED_HEADERS);
src->http_callbacks_pushed = FALSE;
}
/*
* Read a new buffer from src->reqoffset, takes care of events
* and seeking and such.
*/
static GstFlowReturn
gst_gnome_vfs_src_create (GstBaseSrc * basesrc, guint64 offset, guint size,
GstBuffer ** buffer)
{
GnomeVFSResult res;
GstBuffer *buf;
GnomeVFSFileSize readbytes;
guint8 *data, *ptr;
gsize todo;
GstGnomeVFSSrc *src;
src = GST_GNOME_VFS_SRC (basesrc);
GST_DEBUG ("now at %" G_GINT64_FORMAT ", reading from %" G_GUINT64_FORMAT
", size %u", src->curoffset, offset, size);
/* seek if required */
if (G_UNLIKELY (src->curoffset != offset)) {
GST_DEBUG ("need to seek");
if (src->seekable) {
GST_DEBUG ("seeking to %" G_GUINT64_FORMAT, offset);
res = gnome_vfs_seek (src->handle, GNOME_VFS_SEEK_START, offset);
if (res != GNOME_VFS_OK)
goto seek_failed;
src->curoffset = offset;
} else {
goto cannot_seek;
}
}
buf = gst_buffer_try_new_and_alloc (size);
if (G_UNLIKELY (buf == NULL)) {
GST_ERROR_OBJECT (src, "Failed to allocate %u bytes", size);
return GST_FLOW_ERROR;
}
data = gst_buffer_map (buf, NULL, NULL, GST_MAP_WRITE);
ptr = data;
todo = size;
while (todo > 0) {
/* this can return less that we ask for */
res = gnome_vfs_read (src->handle, ptr, todo, &readbytes);
if (G_UNLIKELY (res == GNOME_VFS_ERROR_EOF || (res == GNOME_VFS_OK
&& readbytes == 0)))
goto eos;
if (G_UNLIKELY (res != GNOME_VFS_OK))
goto read_failed;
if (readbytes < todo) {
ptr += readbytes;
todo -= readbytes;
} else {
todo = 0;
}
GST_LOG (" got size %" G_GUINT64_FORMAT, readbytes);
}
gst_buffer_unmap (buf, data, size);
GST_BUFFER_OFFSET (buf) = src->curoffset;
src->curoffset += size;
/* we're done, return the buffer */
*buffer = buf;
return GST_FLOW_OK;
seek_failed:
{
GST_ELEMENT_ERROR (src, RESOURCE, SEEK, (NULL),
("Failed to seek to requested position %" G_GINT64_FORMAT ": %s",
offset, gnome_vfs_result_to_string (res)));
return GST_FLOW_ERROR;
}
cannot_seek:
{
GST_ELEMENT_ERROR (src, RESOURCE, SEEK, (NULL),
("Requested seek from %" G_GINT64_FORMAT " to %" G_GINT64_FORMAT
" on non-seekable stream", src->curoffset, offset));
return GST_FLOW_ERROR;
}
read_failed:
{
gst_buffer_unmap (buf, data, size);
gst_buffer_unref (buf);
GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL),
("Failed to read data: %s", gnome_vfs_result_to_string (res)));
return GST_FLOW_ERROR;
}
eos:
{
gst_buffer_unmap (buf, data, size);
gst_buffer_unref (buf);
GST_DEBUG_OBJECT (src, "Reading data gave EOS");
return GST_FLOW_UNEXPECTED;
}
}
static gboolean
gst_gnome_vfs_src_query (GstBaseSrc * basesrc, GstQuery * query)
{
gboolean ret = FALSE;
GstGnomeVFSSrc *src = GST_GNOME_VFS_SRC (basesrc);
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_URI:
gst_query_set_uri (query, src->uri_name);
ret = TRUE;
break;
default:
ret = FALSE;
break;
}
if (!ret)
ret = GST_BASE_SRC_CLASS (parent_class)->query (basesrc, query);
return ret;
}
static gboolean
gst_gnome_vfs_src_is_seekable (GstBaseSrc * basesrc)
{
GstGnomeVFSSrc *src;
src = GST_GNOME_VFS_SRC (basesrc);
return src->seekable;
}
static gboolean
gst_gnome_vfs_src_check_get_range (GstBaseSrc * basesrc)
{
GstGnomeVFSSrc *src;
const gchar *protocol;
src = GST_GNOME_VFS_SRC (basesrc);
if (src->uri == NULL) {
GST_WARNING_OBJECT (src, "no URI set yet");
return FALSE;
}
if (gnome_vfs_uri_is_local (src->uri)) {
GST_LOG_OBJECT (src, "local URI (%s), assuming random access is possible",
GST_STR_NULL (src->uri_name));
return TRUE;
}
/* blacklist certain protocols we know won't work getrange-based */
protocol = gnome_vfs_uri_get_scheme (src->uri);
if (protocol == NULL)
goto undecided;
if (strcmp (protocol, "http") == 0 || strcmp (protocol, "https") == 0) {
GST_LOG_OBJECT (src, "blacklisted protocol '%s', no random access possible"
" (URI=%s)", protocol, GST_STR_NULL (src->uri_name));
return FALSE;
}
/* fall through to undecided */
undecided:
{
/* don't know what to do, let the basesrc class decide for us */
GST_LOG_OBJECT (src, "undecided about URI '%s', let base class handle it",
GST_STR_NULL (src->uri_name));
if (GST_BASE_SRC_CLASS (parent_class)->check_get_range)
return GST_BASE_SRC_CLASS (parent_class)->check_get_range (basesrc);
return FALSE;
}
}
static gboolean
gst_gnome_vfs_src_get_size (GstBaseSrc * basesrc, guint64 * size)
{
GstGnomeVFSSrc *src;
GnomeVFSFileInfo *info;
GnomeVFSFileInfoOptions options;
GnomeVFSResult res;
src = GST_GNOME_VFS_SRC (basesrc);
*size = -1;
info = gnome_vfs_file_info_new ();
options = GNOME_VFS_FILE_INFO_DEFAULT | GNOME_VFS_FILE_INFO_FOLLOW_LINKS;
res = gnome_vfs_get_file_info_from_handle (src->handle, info, options);
if (res == GNOME_VFS_OK) {
if ((info->valid_fields & GNOME_VFS_FILE_INFO_FIELDS_SIZE) != 0) {
*size = info->size;
GST_DEBUG_OBJECT (src, "from handle: %" G_GUINT64_FORMAT " bytes", *size);
} else if (src->own_handle && gnome_vfs_uri_is_local (src->uri)) {
GST_DEBUG_OBJECT (src,
"file size not known, file local, trying fallback");
res = gnome_vfs_get_file_info_uri (src->uri, info, options);
if (res == GNOME_VFS_OK &&
(info->valid_fields & GNOME_VFS_FILE_INFO_FIELDS_SIZE) != 0) {
*size = info->size;
GST_DEBUG_OBJECT (src, "from uri: %" G_GUINT64_FORMAT " bytes", *size);
}
}
} else {
GST_WARNING_OBJECT (src, "getting info failed: %s",
gnome_vfs_result_to_string (res));
}
gnome_vfs_file_info_unref (info);
if (*size == (GnomeVFSFileSize) - 1)
return FALSE;
GST_DEBUG_OBJECT (src, "return size %" G_GUINT64_FORMAT, *size);
return TRUE;
}
/* open the file, do stuff necessary to go to PAUSED state */
static gboolean
gst_gnome_vfs_src_start (GstBaseSrc * basesrc)
{
GnomeVFSResult res;
GstGnomeVFSSrc *src;
src = GST_GNOME_VFS_SRC (basesrc);
gst_gnome_vfs_src_push_callbacks (src);
if (src->uri != NULL) {
GnomeVFSOpenMode mode = GNOME_VFS_OPEN_READ;
/* this can block... */
res = gnome_vfs_open_uri (&src->handle, src->uri, mode);
if (res != GNOME_VFS_OK)
goto open_failed;
src->own_handle = TRUE;
} else if (!src->handle) {
goto no_filename;
} else {
src->own_handle = FALSE;
}
if (gnome_vfs_seek (src->handle, GNOME_VFS_SEEK_CURRENT, 0) == GNOME_VFS_OK) {
src->seekable = TRUE;
} else {
src->seekable = FALSE;
}
return TRUE;
/* ERRORS */
open_failed:
{
gchar *filename = gnome_vfs_uri_to_string (src->uri,
GNOME_VFS_URI_HIDE_PASSWORD);
gst_gnome_vfs_src_pop_callbacks (src);
if (res == GNOME_VFS_ERROR_NOT_FOUND ||
res == GNOME_VFS_ERROR_HOST_NOT_FOUND ||
res == GNOME_VFS_ERROR_SERVICE_NOT_AVAILABLE) {
GST_ELEMENT_ERROR (src, RESOURCE, NOT_FOUND, (NULL),
("Could not open vfs file \"%s\" for reading: %s (%d)",
filename, gnome_vfs_result_to_string (res), res));
} else {
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL),
("Could not open vfs file \"%s\" for reading: %s (%d)",
filename, gnome_vfs_result_to_string (res), res));
}
g_free (filename);
return FALSE;
}
no_filename:
{
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL), ("No filename given"));
return FALSE;
}
}
static gboolean
gst_gnome_vfs_src_stop (GstBaseSrc * basesrc)
{
GstGnomeVFSSrc *src;
src = GST_GNOME_VFS_SRC (basesrc);
gst_gnome_vfs_src_pop_callbacks (src);
if (src->own_handle) {
GnomeVFSResult res;
res = gnome_vfs_close (src->handle);
if (res != GNOME_VFS_OK) {
GST_ELEMENT_ERROR (src, RESOURCE, CLOSE, (NULL),
("Could not close vfs handle: %s", gnome_vfs_result_to_string (res)));
}
src->handle = NULL;
}
src->curoffset = 0;
return TRUE;
}