/* GStreamer * Copyright (C) 1999,2000 Erik Walthinsen * 2000 Wim Taymans * 2001 Bastien Nocera * 2002 Kristian Rietveld * 2002,2003 Colin Walters * * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include /* gnome-vfs.h doesn't include the following header, which we need: */ #include 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 ", "(C) 2001", }; GST_PAD_FORMATS_FUNCTION (gst_gnomevfssrc_get_formats, GST_FORMAT_BYTES ) GST_PAD_QUERY_TYPE_FUNCTION (gst_gnomevfssrc_get_query_types, GST_QUERY_TOTAL, GST_QUERY_POSITION ) GST_PAD_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, GstQueryType 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 (but skip it in iradio mode, * since it will require a separate request, and we * know the length is undefined anyways) */ if (!src->iradio_mode) { 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; gnome_vfs_file_info_unref(info); } else src->size = 0; GST_DEBUG(0, "size %lld", src->size); 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, GstQueryType type, GstFormat *format, gint64 *value) { GstGnomeVFSSrc *src = GST_GNOMEVFSSRC (gst_pad_get_parent (pad)); switch (type) { case GST_QUERY_TOTAL: if (*format != GST_FORMAT_BYTES) { return FALSE; } *value = src->size; break; case GST_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: */