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gstreamer/ext/gnomevfs/gstgnomevfssrc.c
Wim Taymans 9d9f4e73e5 Removed properties that are better queried. 
Original commit message from CVS:
Removed properties that are better queried.
2002-11-27 21:07:17 +00:00

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/* 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 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.
*/
#define BROKEN_SIG 1
/*#undef BROKEN_SIG */
#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 <libgnomevfs/gnome-vfs.h>
/* gnome-vfs.h doesn't include the following header, which we need: */
#include <libgnomevfs/gnome-vfs-standard-callbacks.h>
GstElementDetails gst_gnomevfssrc_details;
#define GST_TYPE_GNOMEVFSSRC \
(gst_gnomevfssrc_get_type())
#define GST_GNOMEVFSSRC(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_GNOMEVFSSRC,GstGnomeVFSSrc))
#define GST_GNOMEVFSSRC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_GNOMEVFSSRC,GstGnomeVFSSrcClass))
#define GST_IS_GNOMEVFSSRC(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_GNOMEVFSSRC))
#define GST_IS_GNOMEVFSSRC_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_GNOMEVFSSRC))
static GStaticMutex count_lock = G_STATIC_MUTEX_INIT;
static gint ref_count = 0;
static gboolean vfs_owner = FALSE;
typedef enum {
GST_GNOMEVFSSRC_OPEN = GST_ELEMENT_FLAG_LAST,
GST_GNOMEVFSSRC_FLAG_LAST = GST_ELEMENT_FLAG_LAST + 2,
} GstGnomeVFSSrcFlags;
typedef struct _GstGnomeVFSSrc GstGnomeVFSSrc;
typedef struct _GstGnomeVFSSrcClass GstGnomeVFSSrcClass;
struct _GstGnomeVFSSrc {
GstElement element;
/* pads */
GstPad *srcpad;
/* filename */
gchar *filename;
/* is it a local file ? */
gboolean is_local;
/* uri */
GnomeVFSURI *uri;
/* handle */
GnomeVFSHandle *handle;
/* Seek stuff */
gboolean need_flush;
/* local filename */
gchar *local_name;
/* fd for local file fallback */
gint fd;
/* mmap */
guchar *map; /* where the file is mapped to */
/* details for fallback synchronous read */
GnomeVFSFileSize size;
GnomeVFSFileOffset curoffset; /* current offset in file */
gulong bytes_per_read; /* bytes per read */
gboolean new_seek;
/* icecast/audiocast metadata extraction handling */
gboolean iradio_mode;
gboolean iradio_callbacks_pushed;
gint icy_metaint;
GnomeVFSFileSize icy_count;
gchar *iradio_name;
gchar *iradio_genre;
gchar *iradio_url;
gchar *iradio_title;
GThread *audiocast_thread;
GList *audiocast_notify_queue;
GMutex *audiocast_queue_mutex;
GMutex *audiocast_udpdata_mutex;
gint audiocast_thread_die_infd;
gint audiocast_thread_die_outfd;
gint audiocast_port;
gint audiocast_fd;
};
struct _GstGnomeVFSSrcClass {
GstElementClass parent_class;
};
/* elementfactory information */
GstElementDetails gst_gnomevfssrc_details = {
"GnomeVFS Source",
"Source/File",
"LGPL",
"Read from any GnomeVFS file",
VERSION,
"Bastien Nocera <hadess@hadess.net>",
"(C) 2001",
};
GST_FORMATS_FUNCTION (gst_gnomevfssrc_get_formats,
GST_FORMAT_BYTES
)
GST_PAD_QUERY_TYPE_FUNCTION (gst_gnomevfssrc_get_query_types,
GST_PAD_QUERY_TOTAL,
GST_PAD_QUERY_POSITION
)
GST_EVENT_MASK_FUNCTION (gst_gnomevfssrc_get_event_mask,
{ GST_EVENT_SEEK, GST_SEEK_METHOD_CUR |
GST_SEEK_METHOD_SET |
GST_SEEK_METHOD_END |
GST_SEEK_FLAG_FLUSH },
{ GST_EVENT_FLUSH, 0 },
{ GST_EVENT_SIZE, 0 }
)
/* GnomeVFSSrc signals and args */
enum {
LAST_SIGNAL
};
enum {
ARG_0,
ARG_LOCATION,
ARG_BYTESPERREAD,
ARG_IRADIO_MODE,
ARG_IRADIO_NAME,
ARG_IRADIO_GENRE,
ARG_IRADIO_URL,
ARG_IRADIO_TITLE,
};
GType gst_gnomevfssrc_get_type(void);
static void gst_gnomevfssrc_class_init (GstGnomeVFSSrcClass *klass);
static void gst_gnomevfssrc_init (GstGnomeVFSSrc *gnomevfssrc);
static void gst_gnomevfssrc_dispose (GObject *object);
static void gst_gnomevfssrc_set_property (GObject *object, guint prop_id,
const GValue *value, GParamSpec *pspec);
static void gst_gnomevfssrc_get_property (GObject *object, guint prop_id,
GValue *value, GParamSpec *pspec);
static GstBuffer* gst_gnomevfssrc_get (GstPad *pad);
static GstElementStateReturn
gst_gnomevfssrc_change_state (GstElement *element);
static void gst_gnomevfssrc_close_file (GstGnomeVFSSrc *src);
static gboolean gst_gnomevfssrc_open_file (GstGnomeVFSSrc *src);
static gboolean gst_gnomevfssrc_srcpad_event (GstPad *pad, GstEvent *event);
static gboolean gst_gnomevfssrc_srcpad_query (GstPad *pad, GstPadQueryType type,
GstFormat *format, gint64 *value);
static int audiocast_init(GstGnomeVFSSrc *src);
static int audiocast_register_listener(gint *port, gint *fd);
static void audiocast_do_notifications(GstGnomeVFSSrc *src);
static gpointer audiocast_thread_run(GstGnomeVFSSrc *src);
static void audiocast_thread_kill(GstGnomeVFSSrc *src);
static GstElementClass *parent_class = NULL;
GType gst_gnomevfssrc_get_type(void)
{
static GType gnomevfssrc_type = 0;
if (!gnomevfssrc_type) {
static const GTypeInfo gnomevfssrc_info = {
sizeof(GstGnomeVFSSrcClass), NULL,
NULL,
(GClassInitFunc) gst_gnomevfssrc_class_init,
NULL,
NULL,
sizeof(GstGnomeVFSSrc),
0,
(GInstanceInitFunc) gst_gnomevfssrc_init,
};
gnomevfssrc_type =
g_type_register_static(GST_TYPE_ELEMENT,
"GstGnomeVFSSrc",
&gnomevfssrc_info,
0);
}
return gnomevfssrc_type;
}
static void gst_gnomevfssrc_class_init(GstGnomeVFSSrcClass *klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
gst_element_class_install_std_props (
GST_ELEMENT_CLASS (klass),
"bytesperread", ARG_BYTESPERREAD, G_PARAM_READWRITE,
"location", ARG_LOCATION, G_PARAM_READWRITE,
NULL);
gobject_class->dispose = gst_gnomevfssrc_dispose;
/* 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 icecast/audiocast metadata)",
FALSE,
G_PARAM_READWRITE));
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_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_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_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));
gstelement_class->set_property = gst_gnomevfssrc_set_property;
gstelement_class->get_property = gst_gnomevfssrc_get_property;
gstelement_class->change_state = gst_gnomevfssrc_change_state;
}
static void gst_gnomevfssrc_init(GstGnomeVFSSrc *gnomevfssrc)
{
gnomevfssrc->srcpad = gst_pad_new("src", GST_PAD_SRC);
gst_pad_set_get_function(gnomevfssrc->srcpad, gst_gnomevfssrc_get);
gst_pad_set_event_mask_function (gnomevfssrc->srcpad,
gst_gnomevfssrc_get_event_mask);
gst_pad_set_event_function (gnomevfssrc->srcpad,
gst_gnomevfssrc_srcpad_event);
gst_pad_set_query_type_function (gnomevfssrc->srcpad,
gst_gnomevfssrc_get_query_types);
gst_pad_set_query_function (gnomevfssrc->srcpad,
gst_gnomevfssrc_srcpad_query);
gst_pad_set_formats_function (gnomevfssrc->srcpad,
gst_gnomevfssrc_get_formats);
gst_element_add_pad(GST_ELEMENT(gnomevfssrc), gnomevfssrc->srcpad);
gnomevfssrc->filename = NULL;
gnomevfssrc->is_local = FALSE;
gnomevfssrc->uri = NULL;
gnomevfssrc->handle = NULL;
gnomevfssrc->fd = 0;
gnomevfssrc->curoffset = 0;
gnomevfssrc->bytes_per_read = 4096;
gnomevfssrc->new_seek = FALSE;
gnomevfssrc->icy_metaint = 0;
gnomevfssrc->iradio_mode = FALSE;
gnomevfssrc->iradio_callbacks_pushed = FALSE;
gnomevfssrc->icy_count = 0;
gnomevfssrc->iradio_name = NULL;
gnomevfssrc->iradio_genre = NULL;
gnomevfssrc->iradio_url = NULL;
gnomevfssrc->iradio_title = NULL;
gnomevfssrc->audiocast_udpdata_mutex = g_mutex_new();
gnomevfssrc->audiocast_queue_mutex = g_mutex_new();
gnomevfssrc->audiocast_notify_queue = NULL;
gnomevfssrc->audiocast_thread = 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_gnomevfssrc_dispose (GObject *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);
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void gst_gnomevfssrc_set_property(GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
{
GstGnomeVFSSrc *src;
const gchar *location;
gchar cwd[PATH_MAX];
/* it's not null if we got it, but it might not be ours */
g_return_if_fail(GST_IS_GNOMEVFSSRC(object));
src = GST_GNOMEVFSSRC(object);
switch (prop_id) {
case ARG_LOCATION:
/* the element must be stopped or paused in order to do this */
g_return_if_fail((GST_STATE(src) < GST_STATE_PLAYING)
|| (GST_STATE(src) == GST_STATE_PAUSED));
g_free(src->filename);
/* clear the filename if we get a NULL (is that possible?) */
if (g_value_get_string (value) == NULL) {
gst_element_set_state(GST_ELEMENT(object), GST_STATE_NULL);
src->filename = NULL;
} else {
/* otherwise set the new filename */
location = g_value_get_string (value);
/* if it's not a proper uri, default to file: -- this
* is a crude test */
if (!strchr (location, ':'))
{
gchar *newloc = gnome_vfs_escape_path_string(location);
if (*newloc == '/')
src->filename = g_strdup_printf ("file://%s", newloc);
else
src->filename = g_strdup_printf ("file://%s/%s", getcwd(cwd, PATH_MAX), newloc);
g_free(newloc);
}
else
src->filename = g_strdup (g_value_get_string (value));
}
if ((GST_STATE(src) == GST_STATE_PAUSED)
&& (src->filename != NULL)) {
gst_gnomevfssrc_close_file(src);
gst_gnomevfssrc_open_file(src);
}
break;
case ARG_BYTESPERREAD:
src->bytes_per_read = g_value_get_int (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_gnomevfssrc_get_property(GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
{
GstGnomeVFSSrc *src;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail(GST_IS_GNOMEVFSSRC(object));
src = GST_GNOMEVFSSRC(object);
switch (prop_id) {
case ARG_LOCATION:
g_value_set_string (value, src->filename);
break;
case ARG_BYTESPERREAD:
g_value_set_int (value, src->bytes_per_read);
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_mutex_lock(src->audiocast_udpdata_mutex);
g_value_set_string (value, src->iradio_title);
g_mutex_unlock(src->audiocast_udpdata_mutex);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/*
* icecast/audiocast metadata extraction support code
*/
static int audiocast_init(GstGnomeVFSSrc *src)
{
int pipefds[2];
GError *error = NULL;
if (!src->iradio_mode)
return TRUE;
GST_DEBUG (0,"audiocast: registering listener");
if (audiocast_register_listener(&src->audiocast_port, &src->audiocast_fd) < 0)
{
gst_element_error(GST_ELEMENT(src),
"opening vfs file \"%s\" (%s)",
src->filename,
"unable to register UDP port");
close(src->audiocast_fd);
return FALSE;
}
GST_DEBUG (0,"audiocast: creating pipe");
src->audiocast_notify_queue = NULL;
if (pipe(pipefds) < 0)
{
close(src->audiocast_fd);
return FALSE;
}
src->audiocast_thread_die_infd = pipefds[0];
src->audiocast_thread_die_outfd = pipefds[1];
GST_DEBUG (0,"audiocast: creating audiocast thread");
src->audiocast_thread = g_thread_create((GThreadFunc) audiocast_thread_run, src, TRUE, &error);
if (error != NULL) {
gst_element_error(GST_ELEMENT(src),
"opening vfs file \"%s\" (unable to create thread: %s)",
src->filename,
error->message);
close(src->audiocast_fd);
return FALSE;
}
return TRUE;
}
static int audiocast_register_listener(gint *port, gint *fd)
{
struct sockaddr_in sin;
int sock;
socklen_t sinlen = sizeof (struct sockaddr_in);
GST_DEBUG (0,"audiocast: estabilishing UDP listener");
if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0)
goto lose;
memset(&sin, 0, sinlen);
sin.sin_family = AF_INET;
sin.sin_addr.s_addr = g_htonl(INADDR_ANY);
if (bind(sock, (struct sockaddr *)&sin, sinlen) < 0)
goto lose_and_close;
memset(&sin, 0, sinlen);
if (getsockname(sock, (struct sockaddr *)&sin, &sinlen) < 0)
goto lose_and_close;
GST_DEBUG (0,"audiocast: listening on local %s:%d", inet_ntoa(sin.sin_addr), g_ntohs(sin.sin_port));
*port = g_ntohs(sin.sin_port);
*fd = sock;
return 0;
lose_and_close:
close(sock);
lose:
return -1;
}
static void audiocast_do_notifications(GstGnomeVFSSrc *src)
{
/* Send any pending notifications we got from the UDP thread. */
if (src->iradio_mode)
{
GList *entry;
g_mutex_lock(src->audiocast_queue_mutex);
for (entry = src->audiocast_notify_queue; entry; entry = entry->next)
g_object_notify(G_OBJECT (src), (const gchar *) entry->data);
g_list_free(src->audiocast_notify_queue);
src->audiocast_notify_queue = NULL;
g_mutex_unlock(src->audiocast_queue_mutex);
}
}
static gpointer audiocast_thread_run(GstGnomeVFSSrc *src)
{
char buf[1025], **lines;
char *valptr;
gsize len;
fd_set fdset, readset;
struct sockaddr_in from;
socklen_t fromlen = sizeof(struct sockaddr_in);
FD_ZERO(&fdset);
FD_SET(src->audiocast_fd, &fdset);
FD_SET(src->audiocast_thread_die_infd, &fdset);
while (1)
{
GST_DEBUG (0,"audiocast thread: dropping into select");
readset = fdset;
if (select(FD_SETSIZE, &readset, NULL, NULL, NULL) < 0) {
perror("select");
return NULL;
}
if (FD_ISSET(src->audiocast_thread_die_infd, &readset)) {
char buf[1];
GST_DEBUG (0,"audiocast thread: got die character");
read(src->audiocast_thread_die_infd, buf, 1);
close(src->audiocast_thread_die_infd);
close(src->audiocast_fd);
return NULL;
}
GST_DEBUG (0,"audiocast thread: reading data");
len = recvfrom(src->audiocast_fd, buf, sizeof(buf) - 1, 0, (struct sockaddr *) &from, &fromlen);
if (len < 0 && errno == EAGAIN)
continue;
else if (len >= 0)
{
int i;
buf[len] = '\0';
lines = g_strsplit(buf, "\n", 0);
if (!lines)
continue;
for (i = 0; lines[i]; i++) {
while ((lines[i][strlen(lines[i]) - 1] == '\n') ||
(lines[i][strlen(lines[i]) - 1] == '\r'))
lines[i][strlen(lines[i]) - 1] = '\0';
valptr = strchr(lines[i], ':');
if (!valptr)
continue;
else
valptr++;
g_strstrip(valptr);
if (!strlen(valptr))
continue;
if (!strncmp(lines[i], "x-audiocast-streamtitle", 23)) {
g_mutex_lock(src->audiocast_udpdata_mutex);
if (src->iradio_title)
g_free(src->iradio_title);
src->iradio_title = g_strdup(valptr);
g_mutex_unlock(src->audiocast_udpdata_mutex);
g_mutex_lock(src->audiocast_queue_mutex);
src->audiocast_notify_queue = g_list_append(src->audiocast_notify_queue, "iradio-title");
GST_DEBUG(0,"audiocast title: %s\n", src->iradio_title);
g_mutex_unlock(src->audiocast_queue_mutex);
} else if (!strncmp(lines[i], "x-audiocast-streamurl", 21)) {
g_mutex_lock(src->audiocast_udpdata_mutex);
if (src->iradio_url)
g_free(src->iradio_url);
src->iradio_url = g_strdup(valptr);
g_mutex_unlock(src->audiocast_udpdata_mutex);
g_mutex_lock(src->audiocast_queue_mutex);
src->audiocast_notify_queue = g_list_append(src->audiocast_notify_queue, "iradio-url");
GST_DEBUG(0,"audiocast url: %s\n", src->iradio_title);
g_mutex_unlock(src->audiocast_queue_mutex);
} else if (!strncmp(lines[i], "x-audiocast-udpseqnr", 20)) {
gchar outbuf[120];
sprintf(outbuf, "x-audiocast-ack: %ld \r\n", atol(valptr));
if (sendto(src->audiocast_fd, outbuf, strlen(outbuf), 0, (struct sockaddr *) &from, fromlen) <= 0) {
fprintf(stderr, "Error sending response to server: %s\n", strerror(errno));
continue;
}
GST_DEBUG(0,"sent audiocast ack: %s\n", outbuf);
}
}
g_strfreev(lines);
}
}
return NULL;
}
static void audiocast_thread_kill(GstGnomeVFSSrc *src)
{
if (!src->audiocast_thread)
return;
/*
We rely on this hack to kill the
audiocast thread. If we get icecast
metadata, then we don't need the
audiocast metadata too.
*/
GST_DEBUG (0,"audiocast: writing die character");
write(src->audiocast_thread_die_outfd, "q", 1);
close(src->audiocast_thread_die_outfd);
GST_DEBUG (0,"audiocast: joining thread");
g_thread_join(src->audiocast_thread);
src->audiocast_thread = NULL;
}
static void
gst_gnomevfssrc_send_additional_headers_callback (gconstpointer in,
gsize in_size,
gpointer out,
gsize out_size,
gpointer callback_data)
{
GstGnomeVFSSrc *src = GST_GNOMEVFSSRC (callback_data);
GnomeVFSModuleCallbackAdditionalHeadersOut *out_args =
(GnomeVFSModuleCallbackAdditionalHeadersOut *)out;
if (!src->iradio_mode)
return;
GST_DEBUG(0,"sending headers\n");
out_args->headers = g_list_append (out_args->headers,
g_strdup ("icy-metadata:1\r\n"));
out_args->headers = g_list_append (out_args->headers,
g_strdup_printf ("x-audiocast-udpport: %d\r\n", src->audiocast_port));
}
static void
gst_gnomevfssrc_received_headers_callback (gconstpointer in,
gsize in_size,
gpointer out,
gsize out_size,
gpointer callback_data)
{
GList *i;
gint icy_metaint;
GstGnomeVFSSrc *src = GST_GNOMEVFSSRC (callback_data);
GnomeVFSModuleCallbackReceivedHeadersIn *in_args =
(GnomeVFSModuleCallbackReceivedHeadersIn *)in;
if (!src->iradio_mode)
return;
for (i = in_args->headers; i; i = i->next) {
char *data = (char *) i->data;
char *key;
char *value = strchr(data, ':');
if (!value)
continue;
value++;
g_strstrip(value);
if (!strlen(value))
continue;
/* Icecast stuff */
if (!strncmp (data, "icy-metaint:", 12)) /* ugh */
{
sscanf (data + 12, "%d", &icy_metaint);
src->icy_metaint = icy_metaint;
GST_DEBUG (0,"got icy-metaint, killing audiocast thread");
audiocast_thread_kill(src);
continue;
}
if (!strncmp(data, "icy-", 4))
key = data + 4;
else if (!strncmp(data, "x-audiocast-", 12))
key = data + 12;
else
continue;
GST_DEBUG (0,"key: %s", key);
if (!strncmp (key, "name", 4)) {
if (src->iradio_name)
g_free (src->iradio_name);
src->iradio_name = g_strdup (value);
g_object_notify (G_OBJECT (src), "iradio-name");
} else if (!strncmp (key, "genre", 5)) {
if (src->iradio_genre)
g_free (src->iradio_genre);
src->iradio_genre = g_strdup (value);
g_object_notify (G_OBJECT (src), "iradio-genre");
} else if (!strncmp (key, "url", 3)) {
if (src->iradio_url)
g_free (src->iradio_url);
src->iradio_url = g_strdup (value);
g_object_notify (G_OBJECT (src), "iradio-url");
}
}
}
static void
gst_gnomevfssrc_push_callbacks (GstGnomeVFSSrc *gnomevfssrc)
{
if (gnomevfssrc->iradio_callbacks_pushed)
return;
GST_DEBUG (0,"pushing callbacks");
gnome_vfs_module_callback_push (GNOME_VFS_MODULE_CALLBACK_HTTP_SEND_ADDITIONAL_HEADERS,
gst_gnomevfssrc_send_additional_headers_callback,
gnomevfssrc,
NULL);
gnome_vfs_module_callback_push (GNOME_VFS_MODULE_CALLBACK_HTTP_RECEIVED_HEADERS,
gst_gnomevfssrc_received_headers_callback,
gnomevfssrc,
NULL);
gnomevfssrc->iradio_callbacks_pushed = TRUE;
}
static void
gst_gnomevfssrc_pop_callbacks (GstGnomeVFSSrc *gnomevfssrc)
{
if (!gnomevfssrc->iradio_callbacks_pushed)
return;
GST_DEBUG (0,"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);
}
static void
gst_gnomevfssrc_get_icy_metadata (GstGnomeVFSSrc *src)
{
GnomeVFSFileSize length = 0;
GnomeVFSResult res;
gint metadata_length;
guchar foobyte;
guchar *data;
guchar *pos;
gchar **tags;
int i;
GST_DEBUG (0,"reading icecast metadata");
while (length == 0) {
res = gnome_vfs_read (src->handle, &foobyte, 1, &length);
if (res != GNOME_VFS_OK)
return;
}
metadata_length = foobyte * 16;
if (metadata_length == 0)
return;
data = g_new (gchar, metadata_length + 1);
pos = data;
while (pos - data < metadata_length) {
res = gnome_vfs_read (src->handle, pos,
metadata_length - (pos - data),
&length);
/* FIXME: better error handling here? */
if (res != GNOME_VFS_OK) {
g_free (data);
return;
}
pos += length;
}
data[metadata_length] = 0;
tags = g_strsplit(data, "';", 0);
for (i = 0; tags[i]; i++)
{
if (!g_strncasecmp(tags[i], "StreamTitle=", 12))
{
if (src->iradio_title)
g_free (src->iradio_title);
src->iradio_title = g_strdup(tags[i]+13);
GST_DEBUG(0, "sending notification on icecast title");
g_object_notify (G_OBJECT (src), "iradio-title");
}
if (!g_strncasecmp(tags[i], "StreamUrl=", 10))
{
if (src->iradio_url)
g_free (src->iradio_url);
src->iradio_url = g_strdup(tags[i]+11);
GST_DEBUG(0, "sending notification on icecast url");
g_object_notify (G_OBJECT (src), "iradio-url");
}
}
g_strfreev(tags);
}
/* end of icecast/audiocast metadata extraction support code */
/**
* gst_gnomevfssrc_get:
* @pad: #GstPad to push a buffer from
*
* Push a new buffer from the gnomevfssrc at the current offset.
*/
static GstBuffer *gst_gnomevfssrc_get(GstPad *pad)
{
GstGnomeVFSSrc *src;
GnomeVFSResult result = 0;
GstBuffer *buf;
GnomeVFSFileSize readbytes;
g_return_val_if_fail(pad != NULL, NULL);
src = GST_GNOMEVFSSRC(gst_pad_get_parent(pad));
g_return_val_if_fail(GST_FLAG_IS_SET(src, GST_GNOMEVFSSRC_OPEN),
NULL);
/* deal with EOF state */
if ((src->curoffset >= src->size) && (src->size != 0))
{
gst_element_set_eos (GST_ELEMENT (src));
return GST_BUFFER (gst_event_new (GST_EVENT_EOS));
}
/* create the buffer */
/* FIXME: should eventually use a bufferpool for this */
buf = gst_buffer_new();
g_return_val_if_fail(buf, NULL);
audiocast_do_notifications(src);
/* read it in from the file */
if (src->is_local)
{
/* simply set the buffer to point to the correct region of the
* file */
GST_BUFFER_DATA (buf) = src->map + src->curoffset;
GST_BUFFER_OFFSET (buf) = src->curoffset;
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_DONTFREE);
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_READONLY);
if ((src->curoffset + src->bytes_per_read) > src->size)
{
GST_BUFFER_SIZE (buf) = src->size - src->curoffset;
} else {
GST_BUFFER_SIZE (buf) = src->bytes_per_read;
}
if (src->new_seek)
{
GstEvent *event;
gst_buffer_unref (buf);
GST_DEBUG (0,"new seek %lld", src->curoffset);
src->new_seek = FALSE;
GST_DEBUG (GST_CAT_EVENT, "gnomevfssrc sending discont");
event = gst_event_new_discontinuous (FALSE, GST_FORMAT_BYTES, src->curoffset, NULL);
src->need_flush = FALSE;
return GST_BUFFER (event);
}
src->curoffset += GST_BUFFER_SIZE (buf);
} else if (src->iradio_mode && src->icy_metaint > 0) {
GST_BUFFER_DATA (buf) = g_malloc0 (src->icy_metaint);
g_return_val_if_fail (GST_BUFFER_DATA (buf) != NULL, NULL);
result = gnome_vfs_read (src->handle, GST_BUFFER_DATA (buf),
src->icy_metaint - src->icy_count,
&readbytes);
/* EOS? */
if (readbytes == 0) {
gst_buffer_unref (buf);
gst_element_set_eos (GST_ELEMENT (src));
return GST_BUFFER (gst_event_new (GST_EVENT_EOS));
}
src->icy_count += readbytes;
GST_BUFFER_OFFSET (buf) = src->curoffset;
GST_BUFFER_SIZE (buf) = readbytes;
src->curoffset += readbytes;
if (src->icy_count == src->icy_metaint) {
gst_gnomevfssrc_get_icy_metadata (src);
src->icy_count = 0;
}
} else {
/* allocate the space for the buffer data */
GST_BUFFER_DATA(buf) = g_malloc(src->bytes_per_read);
g_return_val_if_fail(GST_BUFFER_DATA(buf) != NULL, NULL);
if (src->new_seek)
{
GstEvent *event;
gst_buffer_unref (buf);
GST_DEBUG (0,"new seek %lld", src->curoffset);
src->new_seek = FALSE;
GST_DEBUG (GST_CAT_EVENT, "gnomevfssrc sending discont");
event = gst_event_new_discontinuous (FALSE, GST_FORMAT_BYTES, src->curoffset, NULL);
src->need_flush = FALSE;
return GST_BUFFER (event);
}
result = gnome_vfs_read(src->handle, GST_BUFFER_DATA(buf),
src->bytes_per_read, &readbytes);
GST_DEBUG(0, "read: %s, readbytes: %Lu",
gnome_vfs_result_to_string(result), readbytes);
/* deal with EOS */
if (readbytes == 0)
{
gst_buffer_unref(buf);
gst_element_set_eos (GST_ELEMENT (src));
return GST_BUFFER (gst_event_new (GST_EVENT_EOS));
}
GST_BUFFER_OFFSET(buf) = src->curoffset;
GST_BUFFER_SIZE(buf) = readbytes;
src->curoffset += readbytes;
}
GST_BUFFER_TIMESTAMP (buf) = -1;
/* we're done, return the buffer */
return buf;
}
/* open the file and mmap it, necessary to go to READY state */
static gboolean gst_gnomevfssrc_open_file(GstGnomeVFSSrc *src)
{
GnomeVFSResult result;
g_return_val_if_fail(!GST_FLAG_IS_SET(src, GST_GNOMEVFSSRC_OPEN),
FALSE);
/* create the uri */
src->uri = gnome_vfs_uri_new(src->filename);
if (!src->uri) {
gst_element_error(GST_ELEMENT(src),
"creating uri \"%s\" (%s)",
src->filename, strerror (errno));
return FALSE;
}
/* open the file using open() if the file is local */
src->is_local = gnome_vfs_uri_is_local(src->uri);
if (src->is_local) {
src->local_name =
gnome_vfs_get_local_path_from_uri(src->filename);
src->fd = open(src->local_name, O_RDONLY);
if (src->fd < 0)
{
gst_element_error(GST_ELEMENT(src),
"opening local file \"%s\" (%s)",
src->filename, strerror (errno));
return FALSE;
}
/* find the file length */
src->size = lseek (src->fd, 0, SEEK_END);
lseek (src->fd, 0, SEEK_SET);
src->map = mmap (NULL, src->size, PROT_READ, MAP_SHARED,
src->fd, 0);
madvise (src->map,src->size, 2);
/* collapse state if that failed */
if (src->map == NULL)
{
gst_gnomevfssrc_close_file(src);
gst_element_error (GST_ELEMENT (src),"mmapping file");
return FALSE;
}
src->new_seek = TRUE;
} else {
if (!audiocast_init(src))
return FALSE;
gst_gnomevfssrc_push_callbacks (src);
result =
gnome_vfs_open_uri(&(src->handle), src->uri,
GNOME_VFS_OPEN_READ);
if (result != GNOME_VFS_OK)
{
gst_gnomevfssrc_pop_callbacks (src);
audiocast_thread_kill(src);
gst_element_error(GST_ELEMENT(src),
"opening vfs file \"%s\" (%s)",
src->filename,
gnome_vfs_result_to_string(result));
return FALSE;
}
/* find the file length */
{
GnomeVFSResult size_result;
GnomeVFSFileInfo *info;
info = gnome_vfs_file_info_new ();
size_result = gnome_vfs_get_file_info_uri(src->uri,
info, GNOME_VFS_FILE_INFO_DEFAULT);
if (size_result != GNOME_VFS_OK)
src->size = 0;
else
src->size = info->size;
GST_DEBUG(0, "size %lld", src->size);
gnome_vfs_file_info_unref(info);
}
audiocast_do_notifications(src);
GST_DEBUG(0, "open %s", gnome_vfs_result_to_string(result));
}
GST_FLAG_SET(src, GST_GNOMEVFSSRC_OPEN);
return TRUE;
}
/* unmap and close the file */
static void gst_gnomevfssrc_close_file(GstGnomeVFSSrc *src)
{
g_return_if_fail(GST_FLAG_IS_SET(src, GST_GNOMEVFSSRC_OPEN));
gst_gnomevfssrc_pop_callbacks (src);
audiocast_thread_kill(src);
/* close the file */
if (src->is_local)
{
/* unmap the file from memory */
munmap (src->map, src->size);
close(src->fd);
} else {
gnome_vfs_close(src->handle);
}
/* zero out a lot of our state */
src->is_local = FALSE;
gnome_vfs_uri_unref(src->uri);
g_free(src->local_name);
src->fd = 0;
src->map = NULL;
src->size = 0;
src->curoffset = 0;
src->new_seek = FALSE;
GST_FLAG_UNSET(src, GST_GNOMEVFSSRC_OPEN);
}
static GstElementStateReturn gst_gnomevfssrc_change_state(GstElement *element)
{
g_return_val_if_fail(GST_IS_GNOMEVFSSRC(element),
GST_STATE_FAILURE);
switch (GST_STATE_TRANSITION (element)) {
case GST_STATE_READY_TO_PAUSED:
if (!GST_FLAG_IS_SET(element, GST_GNOMEVFSSRC_OPEN)) {
if (!gst_gnomevfssrc_open_file
(GST_GNOMEVFSSRC(element)))
return GST_STATE_FAILURE;
}
break;
case GST_STATE_PAUSED_TO_READY:
if (GST_FLAG_IS_SET(element, GST_GNOMEVFSSRC_OPEN))
gst_gnomevfssrc_close_file(GST_GNOMEVFSSRC
(element));
break;
case GST_STATE_NULL_TO_READY:
case GST_STATE_READY_TO_NULL:
default:
break;
}
if (GST_ELEMENT_CLASS(parent_class)->change_state)
return GST_ELEMENT_CLASS(parent_class)->
change_state(element);
return GST_STATE_SUCCESS;
}
static gboolean plugin_init(GModule *module, GstPlugin *plugin)
{
GstElementFactory *factory;
/* create an elementfactory for the aasink element */
factory =
gst_element_factory_new("gnomevfssrc", GST_TYPE_GNOMEVFSSRC,
&gst_gnomevfssrc_details);
g_return_val_if_fail(factory != NULL, FALSE);
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
return TRUE;
}
static gboolean
gst_gnomevfssrc_srcpad_query (GstPad *pad, GstPadQueryType type,
GstFormat *format, gint64 *value)
{
GstGnomeVFSSrc *src = GST_GNOMEVFSSRC (gst_pad_get_parent (pad));
switch (type) {
case GST_PAD_QUERY_TOTAL:
if (*format != GST_FORMAT_BYTES) {
return FALSE;
}
*value = src->size;
break;
case GST_PAD_QUERY_POSITION:
if (*format != GST_FORMAT_BYTES) {
return FALSE;
}
*value = src->curoffset;
break;
default:
return FALSE;
break;
}
return TRUE;
}
static gboolean
gst_gnomevfssrc_srcpad_event (GstPad *pad, GstEvent *event)
{
GstGnomeVFSSrc *src = GST_GNOMEVFSSRC(GST_PAD_PARENT(pad));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEEK:
{
gint64 desired_offset;
if (GST_EVENT_SEEK_FORMAT (event) != GST_FORMAT_BYTES) {
gst_event_unref (event);
return FALSE;
}
switch (GST_EVENT_SEEK_METHOD (event)) {
case GST_SEEK_METHOD_SET:
desired_offset = (guint64) GST_EVENT_SEEK_OFFSET (event);
break;
case GST_SEEK_METHOD_CUR:
desired_offset = src->curoffset + GST_EVENT_SEEK_OFFSET (event);
break;
case GST_SEEK_METHOD_END:
desired_offset = src->size - ABS (GST_EVENT_SEEK_OFFSET (event));
break;
default:
gst_event_unref (event);
return FALSE;
break;
}
if (!src->is_local) {
GnomeVFSResult result;
result = gnome_vfs_seek(src->handle,
GNOME_VFS_SEEK_START, desired_offset);
GST_DEBUG(0, "new_seek: %s",
gnome_vfs_result_to_string(result));
if (result != GNOME_VFS_OK) {
gst_event_unref (event);
return FALSE;
}
}
src->curoffset = desired_offset;
src->new_seek = TRUE;
src->need_flush = GST_EVENT_SEEK_FLAGS (event) & GST_SEEK_FLAG_FLUSH;
break;
}
case GST_EVENT_SIZE:
if (GST_EVENT_SIZE_FORMAT (event) != GST_FORMAT_BYTES) {
gst_event_unref (event);
return FALSE;
}
src->bytes_per_read = GST_EVENT_SIZE_VALUE (event);
g_object_notify (G_OBJECT (src), "bytesperread");
break;
case GST_EVENT_FLUSH:
src->need_flush = TRUE;
break;
default:
gst_event_unref (event);
return FALSE;
break;
}
gst_event_unref (event);
return TRUE;
}
GstPluginDesc plugin_desc = {
GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"gnomevfssrc",
plugin_init
};
/*
Local Variables:
c-file-style: "linux"
End:
*/
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