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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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362 lines
9.6 KiB
C
362 lines
9.6 KiB
C
/* gstcdplay
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* Copyright (c) 2002 Charles Schmidt <cbschmid@uiuc.edu>
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "gstcdplayer.h"
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/* props */
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enum
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{
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ARG_0,
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ARG_DEVICE,
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ARG_NUM_TRACKS,
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ARG_START_TRACK,
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ARG_END_TRACK,
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ARG_CURRENT_TRACK,
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ARG_CDDB_DISCID
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};
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/* signals */
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enum
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{
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TRACK_CHANGE,
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LAST_SIGNAL
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};
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static void cdplayer_base_init (gpointer g_class);
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static void cdplayer_class_init (CDPlayerClass * klass);
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static void cdplayer_init (CDPlayer * cdp);
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static void cdplayer_finalize (GObject * object);
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static void cdplayer_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * spec);
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static void cdplayer_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * spec);
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static gboolean cdplayer_iterate (GstBin * bin);
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static GstStateChangeReturn cdplayer_change_state (GstElement * element,
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GstStateChange transition);
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static GstElementClass *parent_class;
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static guint cdplayer_signals[LAST_SIGNAL] = { 0 };
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GType
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cdplayer_get_type (void)
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{
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static GType cdplayer_type = 0;
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if (!cdplayer_type) {
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static const GTypeInfo cdplayer_info = {
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sizeof (CDPlayerClass),
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cdplayer_base_init,
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NULL,
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(GClassInitFunc) cdplayer_class_init,
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NULL,
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NULL,
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sizeof (CDPlayer),
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0,
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(GInstanceInitFunc) cdplayer_init,
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NULL
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};
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cdplayer_type =
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g_type_register_static (GST_TYPE_BIN, "CDPlayer", &cdplayer_info, 0);
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}
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return cdplayer_type;
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}
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static void
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cdplayer_base_init (gpointer g_class)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
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gst_element_class_set_details_simple (element_class, "CD Player",
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"Generic/Bin",
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"Play CD audio through the CD Drive",
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"Charles Schmidt <cbschmid@uiuc.edu>, "
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"Wim Taymans <wim.taymans@chello.be>");
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}
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static void
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cdplayer_class_init (CDPlayerClass * klass)
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{
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GObjectClass *gobject_klass;
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GstElementClass *gstelement_klass;
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GstBinClass *gstbin_klass;
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gobject_klass = (GObjectClass *) klass;
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gstelement_klass = (GstElementClass *) klass;
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gstbin_klass = (GstBinClass *) klass;
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parent_class = g_type_class_peek_parent (klass);
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gobject_klass->finalize = GST_DEBUG_FUNCPTR (cdplayer_finalize);
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gstelement_klass->change_state = GST_DEBUG_FUNCPTR (cdplayer_change_state);
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gstbin_klass->iterate = GST_DEBUG_FUNCPTR (cdplayer_iterate);
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gobject_klass->set_property = cdplayer_set_property;
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gobject_klass->get_property = cdplayer_get_property;
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g_object_class_install_property (gobject_klass, ARG_DEVICE,
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g_param_spec_string ("device", "device", "CDROM device", NULL,
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G_PARAM_READWRITE));
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g_object_class_install_property (gobject_klass, ARG_NUM_TRACKS,
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g_param_spec_int ("num_tracks", "num_tracks", "Number of Tracks",
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G_MININT, G_MAXINT, 0, G_PARAM_READABLE));
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g_object_class_install_property (gobject_klass, ARG_START_TRACK,
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g_param_spec_int ("start_track", "start_track",
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"Track to start playback on", 1,
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CDPLAYER_MAX_TRACKS - 1, 1, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_klass, ARG_END_TRACK,
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g_param_spec_int ("end_track", "end_track",
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"Track to end playback on", 0,
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CDPLAYER_MAX_TRACKS - 1, 0, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_klass, ARG_CURRENT_TRACK,
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g_param_spec_int ("current_track", "current_track",
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"Current track playing", 1,
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CDPLAYER_MAX_TRACKS - 1, 1, G_PARAM_READABLE));
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g_object_class_install_property (gobject_klass, ARG_CDDB_DISCID,
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g_param_spec_uint ("cddb_discid", "cddb_discid", "CDDB Disc ID",
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0, G_MAXUINT, 1, G_PARAM_READABLE));
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cdplayer_signals[TRACK_CHANGE] =
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g_signal_new ("track-change", G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (CDPlayerClass, track_change), NULL,
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NULL, gst_marshal_VOID__INT, G_TYPE_NONE, 1, G_TYPE_INT);
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return;
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}
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static void
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cdplayer_init (CDPlayer * cdp)
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{
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cdp->device = g_strdup ("/dev/cdrom");
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cdp->num_tracks = -1;
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cdp->start_track = 1;
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cdp->end_track = 0;
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cdp->current_track = 1;
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cdp->paused = FALSE;
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GST_OBJECT_FLAG_SET (cdp, GST_BIN_FLAG_MANAGER);
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return;
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}
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static void
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cdplayer_set_property (GObject * object, guint prop_id, const GValue * value,
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GParamSpec * spec)
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{
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CDPlayer *cdp;
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g_return_if_fail (GST_IS_CDPLAYER (object));
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cdp = CDPLAYER (object);
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switch (prop_id) {
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case ARG_DEVICE:
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// FIXME prolly should uhh.. stop it or something
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if (cdp->device) {
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g_free (cdp->device);
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}
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cdp->device = g_strdup (g_value_get_string (value));
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break;
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case ARG_START_TRACK:
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// FIXME prolly should uhh.. restart play, i guess... or something whatever
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// FIXME we should only set current_track if its not playing...
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cdp->current_track = cdp->start_track = g_value_get_int (value);
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break;
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case ARG_END_TRACK:
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// FIXME prolly should restart play, maybe, or try to set it without interrupt..
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cdp->end_track = g_value_get_int (value);
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break;
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default:
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break;
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}
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return;
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}
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static void
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cdplayer_get_property (GObject * object, guint prop_id, GValue * value,
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GParamSpec * spec)
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{
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CDPlayer *cdp;
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g_return_if_fail (GST_IS_CDPLAYER (object));
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cdp = CDPLAYER (object);
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switch (prop_id) {
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case ARG_DEVICE:
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g_value_set_string (value, cdp->device);
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break;
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case ARG_NUM_TRACKS:
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g_value_set_int (value, cdp->num_tracks);
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break;
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case ARG_START_TRACK:
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g_value_set_int (value, cdp->start_track);
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break;
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case ARG_END_TRACK:
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g_value_set_int (value, cdp->end_track);
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case ARG_CURRENT_TRACK:
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g_value_set_int (value, cdp->current_track);
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break;
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case ARG_CDDB_DISCID:
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g_value_set_uint (value, cdp->cddb_discid);
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default:
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break;
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}
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return;
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}
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static void
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cdplayer_finalize (GObject * object)
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{
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CDPlayer *cdp;
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g_return_if_fail (GST_IS_CDPLAYER (object));
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cdp = CDPLAYER (object);
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g_free (cdp->device);
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if (G_OBJECT_CLASS (parent_class)->finalize) {
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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}
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static gboolean
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cdplayer_iterate (GstBin * bin)
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{
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CDPlayer *cdp = CDPLAYER (bin);
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gint current_track;
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switch (cd_status (CDPLAYER_CD (cdp))) {
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case CD_PLAYING:
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current_track = cd_current_track (CDPLAYER_CD (cdp));
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if (current_track > cdp->end_track && cdp->end_track != 0) {
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return FALSE;
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}
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if (current_track != -1 && current_track != cdp->current_track) {
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cdp->current_track = current_track;
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g_signal_emit (G_OBJECT (cdp), cdplayer_signals[TRACK_CHANGE], 0,
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cdp->current_track);
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}
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return TRUE;
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break;
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case CD_ERROR:
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gst_element_set_state (GST_ELEMENT (bin), GST_STATE_PAUSED);
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return FALSE;
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break;
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case CD_COMPLETED:
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gst_element_set_state (GST_ELEMENT (bin), GST_STATE_PAUSED);
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gst_element_set_eos (GST_ELEMENT (bin));
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return FALSE;
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break;
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}
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return FALSE;
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}
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static GstStateChangeReturn
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cdplayer_change_state (GstElement * element, GstStateChange transition)
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{
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CDPlayer *cdp;
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GstState state = GST_STATE (element);
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GstState pending = GST_STATE_PENDING (element);
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g_return_val_if_fail (GST_IS_CDPLAYER (element), GST_STATE_CHANGE_FAILURE);
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cdp = CDPLAYER (element);
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switch (pending) {
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case GST_STATE_READY:
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if (state != GST_STATE_PAUSED) {
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if (cd_init (CDPLAYER_CD (cdp), cdp->device) == FALSE) {
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return GST_STATE_CHANGE_FAILURE;
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}
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cdp->num_tracks = cdp->cd.num_tracks;
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cdp->cddb_discid = cd_cddb_discid (CDPLAYER_CD (cdp));
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}
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break;
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case GST_STATE_PAUSED:
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/* ready->paused is not useful */
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if (state != GST_STATE_READY) {
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if (cd_pause (CDPLAYER_CD (cdp)) == FALSE) {
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return GST_STATE_CHANGE_FAILURE;
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}
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cdp->paused = TRUE;
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}
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break;
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case GST_STATE_PLAYING:
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if (cdp->paused == TRUE) {
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if (cd_resume (CDPLAYER_CD (cdp)) == FALSE) {
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return GST_STATE_CHANGE_FAILURE;
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}
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cdp->paused = FALSE;
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} else {
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if (cd_start (CDPLAYER_CD (cdp), cdp->start_track,
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cdp->end_track) == FALSE) {
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return GST_STATE_CHANGE_FAILURE;
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}
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}
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break;
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case GST_STATE_NULL:
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/* stop & close fd */
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if (cd_stop (CDPLAYER_CD (cdp)) == FALSE
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|| cd_close (CDPLAYER_CD (cdp)) == FALSE) {
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return GST_STATE_CHANGE_FAILURE;
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}
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break;
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default:
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break;
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}
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if (GST_ELEMENT_CLASS (parent_class)->change_state) {
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GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
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}
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return GST_STATE_CHANGE_SUCCESS;
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}
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static gboolean
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plugin_init (GstPlugin * plugin)
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{
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return gst_element_register (plugin, "cdplayer", GST_RANK_NONE,
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GST_TYPE_CDPLAYER);
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}
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GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, GST_VERSION_MINOR, "cdplayer", "CD Player", plugin_init, VERSION, GST_LICENSE, /* ? */
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GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);
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