/* gstcdplay * Copyright (c) 2002 Charles Schmidt <cbschmid@uiuc.edu> * 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. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "gstcdplayer.h" /* props */ enum { ARG_0, ARG_DEVICE, ARG_NUM_TRACKS, ARG_START_TRACK, ARG_END_TRACK, ARG_CURRENT_TRACK, ARG_CDDB_DISCID, }; /* signals */ enum { TRACK_CHANGE, LAST_SIGNAL, }; static void cdplayer_base_init (gpointer g_class); static void cdplayer_class_init (CDPlayerClass *klass); static void cdplayer_init (CDPlayer *cdp); static void cdplayer_dispose (GObject *object); static void cdplayer_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *spec); static void cdplayer_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *spec); static gboolean cdplayer_iterate (GstBin *bin); static GstElementStateReturn cdplayer_change_state (GstElement * element); static GstElementClass *parent_class; static guint cdplayer_signals[LAST_SIGNAL] = { 0 }; static GstElementDetails cdplayer_details = GST_ELEMENT_DETAILS ( "CD Player", "Generic/Bin", "Play CD audio through the CD Drive", "Charles Schmidt <cbschmid@uiuc.edu>, " "Wim Taymans <wim.taymans@chello.be>" ); GType cdplayer_get_type (void) { static GType cdplayer_type = 0; if (!cdplayer_type) { static const GTypeInfo cdplayer_info = { sizeof (CDPlayerClass), cdplayer_base_init, NULL, (GClassInitFunc) cdplayer_class_init, NULL, NULL, sizeof (CDPlayer), 0, (GInstanceInitFunc) cdplayer_init, NULL }; cdplayer_type = g_type_register_static (GST_TYPE_BIN, "CDPlayer", &cdplayer_info, 0); } return cdplayer_type; } static void cdplayer_base_init (gpointer g_class) { GstElementClass *element_class = GST_ELEMENT_CLASS (g_class); gst_element_class_set_details (element_class, &cdplayer_details); } static void cdplayer_class_init (CDPlayerClass * klass) { GObjectClass *gobject_klass; GstElementClass *gstelement_klass; GstBinClass *gstbin_klass; gobject_klass = (GObjectClass *) klass; gstelement_klass = (GstElementClass *) klass; gstbin_klass = (GstBinClass *) klass; parent_class = g_type_class_ref (gst_bin_get_type ()); gobject_klass->dispose = GST_DEBUG_FUNCPTR (cdplayer_dispose); gstelement_klass->change_state = GST_DEBUG_FUNCPTR (cdplayer_change_state); gstbin_klass->iterate = GST_DEBUG_FUNCPTR (cdplayer_iterate); gobject_klass->set_property = cdplayer_set_property; gobject_klass->get_property = cdplayer_get_property; g_object_class_install_property (gobject_klass, ARG_DEVICE, g_param_spec_string ("device", "device", "CDROM device", NULL, G_PARAM_READWRITE)); g_object_class_install_property (gobject_klass, ARG_NUM_TRACKS, g_param_spec_int ("num_tracks", "num_tracks", "Number of Tracks", G_MININT, G_MAXINT, 0, G_PARAM_READABLE)); g_object_class_install_property (gobject_klass, ARG_START_TRACK, g_param_spec_int ("start_track", "start_track", "Track to start playback on", 1, CDPLAYER_MAX_TRACKS - 1, 1, G_PARAM_READWRITE)); g_object_class_install_property (gobject_klass, ARG_END_TRACK, g_param_spec_int ("end_track", "end_track", "Track to end playback on", 0, CDPLAYER_MAX_TRACKS - 1, 0, G_PARAM_READWRITE)); g_object_class_install_property (gobject_klass, ARG_CURRENT_TRACK, g_param_spec_int ("current_track", "current_track", "Current track playing", 1, CDPLAYER_MAX_TRACKS - 1, 1, G_PARAM_READABLE)); g_object_class_install_property (gobject_klass, ARG_CDDB_DISCID, g_param_spec_uint ("cddb_discid", "cddb_discid", "CDDB Disc ID", 0, G_MAXUINT, 1, G_PARAM_READABLE)); cdplayer_signals[TRACK_CHANGE] = g_signal_new ("track_change", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (CDPlayerClass, track_change), NULL, NULL, gst_marshal_VOID__INT, G_TYPE_NONE, 1, G_TYPE_INT); return; } static void cdplayer_init (CDPlayer * cdp) { cdp->device = g_strdup ("/dev/cdrom"); cdp->num_tracks = -1; cdp->start_track = 1; cdp->end_track = 0; cdp->current_track = 1; cdp->paused = FALSE; GST_FLAG_SET (cdp, GST_BIN_FLAG_MANAGER); return; } static void cdplayer_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * spec) { CDPlayer *cdp; g_return_if_fail (GST_IS_CDPLAYER (object)); cdp = CDPLAYER (object); switch (prop_id) { case ARG_DEVICE: // FIXME prolly should uhh.. stop it or something if (cdp->device) { g_free (cdp->device); } cdp->device = g_strdup (g_value_get_string (value)); break; case ARG_START_TRACK: // FIXME prolly should uhh.. restart play, i guess... or something whatever // FIXME we should only set current_track if its not playing... cdp->current_track = cdp->start_track = g_value_get_int (value); break; case ARG_END_TRACK: // FIXME prolly should restart play, maybe, or try to set it without interrupt.. cdp->end_track = g_value_get_int (value); break; default: break; } return; } static void cdplayer_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * spec) { CDPlayer *cdp; g_return_if_fail (GST_IS_CDPLAYER (object)); cdp = CDPLAYER (object); switch (prop_id) { case ARG_DEVICE: g_value_set_string (value, cdp->device); break; case ARG_NUM_TRACKS: g_value_set_int (value, cdp->num_tracks); break; case ARG_START_TRACK: g_value_set_int (value, cdp->start_track); break; case ARG_END_TRACK: g_value_set_int (value, cdp->end_track); case ARG_CURRENT_TRACK: g_value_set_int (value, cdp->current_track); break; case ARG_CDDB_DISCID: g_value_set_uint (value, cdp->cddb_discid); default: break; } return; } static void cdplayer_dispose (GObject * object) { CDPlayer *cdp; g_return_if_fail (GST_IS_CDPLAYER (object)); cdp = CDPLAYER (object); g_free (cdp->device); if (G_OBJECT_CLASS (parent_class)->dispose) { G_OBJECT_CLASS (parent_class)->dispose (object); } return; } static gboolean cdplayer_iterate (GstBin * bin) { CDPlayer *cdp = CDPLAYER (bin); gint current_track; switch (cd_status (CDPLAYER_CD (cdp))) { case CD_PLAYING: current_track = cd_current_track (CDPLAYER_CD (cdp)); if (current_track > cdp->end_track && cdp->end_track != 0) { return FALSE; } if (current_track != -1 && current_track != cdp->current_track) { cdp->current_track = current_track; g_signal_emit (G_OBJECT (cdp), cdplayer_signals[TRACK_CHANGE], 0, cdp->current_track); } return TRUE; break; case CD_ERROR: gst_element_set_state (GST_ELEMENT (bin), GST_STATE_PAUSED); return FALSE; break; case CD_COMPLETED: gst_element_set_state (GST_ELEMENT (bin), GST_STATE_PAUSED); gst_element_set_eos (GST_ELEMENT (bin)); return FALSE; break; } return FALSE; } static GstElementStateReturn cdplayer_change_state (GstElement * element) { CDPlayer *cdp; GstElementState state = GST_STATE (element); GstElementState pending = GST_STATE_PENDING (element); g_return_val_if_fail (GST_IS_CDPLAYER (element), GST_STATE_FAILURE); cdp = CDPLAYER (element); switch (pending) { case GST_STATE_READY: if (state != GST_STATE_PAUSED) { if (cd_init (CDPLAYER_CD (cdp), cdp->device) == FALSE) { return GST_STATE_FAILURE; } cdp->num_tracks = cdp->cd.num_tracks; cdp->cddb_discid = cd_cddb_discid (CDPLAYER_CD (cdp)); } break; case GST_STATE_PAUSED: /* ready->paused is not useful */ if (state != GST_STATE_READY) { if (cd_pause (CDPLAYER_CD (cdp)) == FALSE) { return GST_STATE_FAILURE; } cdp->paused = TRUE; } break; case GST_STATE_PLAYING: if (cdp->paused == TRUE) { if (cd_resume (CDPLAYER_CD (cdp)) == FALSE) { return GST_STATE_FAILURE; } cdp->paused = FALSE; } else { if (cd_start (CDPLAYER_CD (cdp), cdp->start_track, cdp->end_track) == FALSE) { return GST_STATE_FAILURE; } } break; case GST_STATE_NULL: /* stop & close fd */ if (cd_stop (CDPLAYER_CD (cdp)) == FALSE || cd_close (CDPLAYER_CD (cdp)) == FALSE) { return GST_STATE_FAILURE; } break; default: break; } if (GST_ELEMENT_CLASS (parent_class)->change_state) { GST_ELEMENT_CLASS (parent_class)->change_state (element); } return GST_STATE_SUCCESS; } static gboolean plugin_init (GstPlugin * plugin) { return gst_element_register (plugin, "cdplayer", GST_RANK_NONE, GST_TYPE_CDPLAYER); } GST_PLUGIN_DEFINE ( GST_VERSION_MAJOR, GST_VERSION_MINOR, "cdplayer", "CD Player", plugin_init, VERSION, GST_LICENSE, /* ? */ GST_PACKAGE, GST_ORIGIN );