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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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655 lines
17 KiB
C
655 lines
17 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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* <2006> Wim Taymans <wim@fluendo.com>
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*
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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 <string.h>
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#include <cdaudio.h>
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#include <gst/gst.h>
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GST_DEBUG_CATEGORY_STATIC (gst_cdaudio_debug);
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#define GST_CAT_DEFAULT gst_cdaudio_debug
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#define GST_TYPE_CDAUDIO (gst_cdaudio_get_type())
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#define GST_CDAUDIO(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_CDAUDIO,GstCDAudio))
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#define GST_CDAUDIO_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_CDAUDIO,GstCDAudioClass))
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#define GST_IS_CDAUDIO(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_CDAUDIO))
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#define GST_IS_CDAUDIO_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_CDAUDIO))
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typedef struct _GstCDAudio GstCDAudio;
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typedef struct _GstCDAudioClass GstCDAudioClass;
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struct _GstCDAudio
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{
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GstElement parent;
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/* properties */
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gchar *device;
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gchar *uri;
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gint cd_desc;
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gulong discid;
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gboolean was_playing;
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struct disc_info info;
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struct disc_volume volume;
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GTimer *timer;
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};
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struct _GstCDAudioClass
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{
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GstElementClass parent_class;
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void (*close_tray) (GstElement * element);
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/* signal callbacks */
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void (*track_change) (GstElement * element, guint track);
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};
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#define DEFAULT_DEVICE "/dev/cdrom"
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#define DEFAULT_VOLUME_FR 255
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#define DEFAULT_VOLUME_FL 255
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#define DEFAULT_VOLUME_BR 255
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#define DEFAULT_VOLUME_BL 255
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/* props */
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enum
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{
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PROP_0,
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PROP_DEVICE,
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PROP_VOLUME_FR,
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PROP_VOLUME_FL,
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PROP_VOLUME_BR,
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PROP_VOLUME_BL,
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PROP_LAST
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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 gst_cdaudio_finalize (GObject * object);
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static void gst_cdaudio_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * spec);
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static void gst_cdaudio_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * spec);
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static GstStateChangeReturn gst_cdaudio_change_state (GstElement * element,
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GstStateChange transition);
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static const GstQueryType *gst_cdaudio_get_query_types (GstElement * element);
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static gboolean gst_cdaudio_query (GstElement * element, GstQuery * query);
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static gboolean gst_cdaudio_send_event (GstElement * element, GstEvent * event);
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static void cdaudio_uri_handler_init (gpointer g_iface, gpointer iface_data);
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static GstFormat track_format;
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static GstFormat sector_format;
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static GstElementClass *parent_class;
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static guint gst_cdaudio_signals[LAST_SIGNAL] = { 0 };
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static void
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_do_init (GType cdaudio_type)
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{
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static const GInterfaceInfo urihandler_info = {
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cdaudio_uri_handler_init,
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NULL,
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NULL,
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};
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g_type_add_interface_static (cdaudio_type, GST_TYPE_URI_HANDLER,
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&urihandler_info);
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}
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GType gst_cdaudio_get_type (void);
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GST_BOILERPLATE_FULL (GstCDAudio, gst_cdaudio, GstElement, GST_TYPE_ELEMENT,
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_do_init);
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static void
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gst_cdaudio_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", "Wim Taymans <wim@fluendo.com>");
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/* Register the track and sector format */
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track_format = gst_format_register ("track", "CD track");
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sector_format = gst_format_register ("sector", "CD sector");
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}
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static void
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gst_cdaudio_class_init (GstCDAudioClass * klass)
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{
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GObjectClass *gobject_klass;
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GstElementClass *gstelement_klass;
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gobject_klass = (GObjectClass *) klass;
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gstelement_klass = (GstElementClass *) klass;
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parent_class = g_type_class_peek_parent (klass);
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gobject_klass->set_property = gst_cdaudio_set_property;
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gobject_klass->get_property = gst_cdaudio_get_property;
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g_object_class_install_property (gobject_klass, PROP_DEVICE,
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g_param_spec_string ("device", "Device", "CDROM device",
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NULL, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_klass, PROP_VOLUME_FL,
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g_param_spec_int ("volume-fl", "Volume fl", "Front left volume",
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0, 255, 255, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_klass, PROP_VOLUME_FR,
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g_param_spec_int ("volume-fr", "Volume fr", "Front right volume",
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0, 255, 255, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_klass, PROP_VOLUME_BL,
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g_param_spec_int ("volume-bl", "Volume bl", "Back left volume",
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0, 255, 255, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_klass, PROP_VOLUME_BR,
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g_param_spec_int ("volume-br", "Volume br", "Back right volume",
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0, 255, 255, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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gst_cdaudio_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 (GstCDAudioClass, track_change), NULL,
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NULL, gst_marshal_VOID__INT, G_TYPE_NONE, 1, G_TYPE_INT);
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gobject_klass->finalize = GST_DEBUG_FUNCPTR (gst_cdaudio_finalize);
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gstelement_klass->change_state = GST_DEBUG_FUNCPTR (gst_cdaudio_change_state);
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gstelement_klass->send_event = GST_DEBUG_FUNCPTR (gst_cdaudio_send_event);
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gstelement_klass->get_query_types =
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GST_DEBUG_FUNCPTR (gst_cdaudio_get_query_types);
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gstelement_klass->query = GST_DEBUG_FUNCPTR (gst_cdaudio_query);
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GST_DEBUG_CATEGORY_INIT (gst_cdaudio_debug, "cdaudio", 0, "CDAudio Element");
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}
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static void
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gst_cdaudio_init (GstCDAudio * cdaudio, GstCDAudioClass * g_class)
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{
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cdaudio->device = g_strdup (DEFAULT_DEVICE);
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cdaudio->volume.vol_front.right = DEFAULT_VOLUME_FR;
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cdaudio->volume.vol_front.left = DEFAULT_VOLUME_FL;
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cdaudio->volume.vol_back.right = DEFAULT_VOLUME_BR;
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cdaudio->volume.vol_back.left = DEFAULT_VOLUME_BL;
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cdaudio->was_playing = FALSE;
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cdaudio->timer = g_timer_new ();
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GST_OBJECT_FLAG_SET (cdaudio, GST_ELEMENT_IS_SINK);
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}
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static void
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gst_cdaudio_finalize (GObject * object)
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{
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GstCDAudio *cdaudio = GST_CDAUDIO (object);
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g_timer_destroy (cdaudio->timer);
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g_free (cdaudio->device);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static void
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gst_cdaudio_set_property (GObject * object, guint prop_id, const GValue * value,
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GParamSpec * spec)
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{
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GstCDAudio *cdaudio;
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cdaudio = GST_CDAUDIO (object);
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switch (prop_id) {
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case PROP_DEVICE:
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g_free (cdaudio->device);
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cdaudio->device = g_value_dup_string (value);
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break;
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case PROP_VOLUME_FR:
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cdaudio->volume.vol_front.right = g_value_get_int (value);
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break;
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case PROP_VOLUME_FL:
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cdaudio->volume.vol_front.left = g_value_get_int (value);
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break;
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case PROP_VOLUME_BR:
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cdaudio->volume.vol_back.right = g_value_get_int (value);
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break;
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case PROP_VOLUME_BL:
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cdaudio->volume.vol_back.left = 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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}
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static void
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gst_cdaudio_get_property (GObject * object, guint prop_id, GValue * value,
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GParamSpec * spec)
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{
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GstCDAudio *cdaudio;
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cdaudio = GST_CDAUDIO (object);
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switch (prop_id) {
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case PROP_DEVICE:
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g_value_set_string (value, cdaudio->device);
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break;
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case PROP_VOLUME_FR:
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g_value_set_int (value, cdaudio->volume.vol_front.right);
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break;
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case PROP_VOLUME_FL:
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g_value_set_int (value, cdaudio->volume.vol_front.left);
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break;
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case PROP_VOLUME_BR:
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g_value_set_int (value, cdaudio->volume.vol_back.right);
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break;
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case PROP_VOLUME_BL:
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g_value_set_int (value, cdaudio->volume.vol_back.left);
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break;
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default:
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break;
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}
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}
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static void
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debug_track_info (GstCDAudio * cdaudio)
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{
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gint i;
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for (i = 0; i < cdaudio->info.disc_total_tracks; i++) {
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GST_DEBUG_OBJECT (cdaudio, "%d %d %d %d:%02d", i,
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cdaudio->info.disc_track[i].track_length.frames,
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cdaudio->info.disc_track[i].track_pos.frames,
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cdaudio->info.disc_track[i].track_length.minutes,
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cdaudio->info.disc_track[i].track_length.seconds);
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}
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}
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static GstStateChangeReturn
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gst_cdaudio_change_state (GstElement * element, GstStateChange transition)
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{
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GstCDAudio *cdaudio;
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GstStateChangeReturn ret;
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gint res;
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cdaudio = GST_CDAUDIO (element);
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switch (transition) {
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case GST_STATE_CHANGE_NULL_TO_READY:
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break;
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case GST_STATE_CHANGE_READY_TO_PAUSED:
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if ((res = cd_init_device (cdaudio->device)) < 0)
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goto init_failed;
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cdaudio->cd_desc = res;
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/* close tray */
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if ((res = cd_close (cdaudio->cd_desc)) < 0)
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goto close_failed;
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if ((res = cd_stat (cdaudio->cd_desc, &cdaudio->info)) < 0) {
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/* we just give a warning here */
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GST_ELEMENT_WARNING (cdaudio, LIBRARY, INIT,
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("Could not retrieve CD track info."), (NULL));
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} else {
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debug_track_info (cdaudio);
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cdaudio->discid = cddb_discid (cdaudio->cd_desc);
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/* FIXME, post message with discid */
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}
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cdaudio->was_playing = FALSE;
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break;
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case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
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{
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if (cdaudio->was_playing)
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res = cd_resume (cdaudio->cd_desc);
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else
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res = cd_play (cdaudio->cd_desc, 1);
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if (res < 0)
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goto play_failed;
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cdaudio->was_playing = TRUE;
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g_timer_start (cdaudio->timer);
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break;
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}
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default:
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break;
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}
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ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
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switch (transition) {
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case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
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if ((res = cd_pause (cdaudio->cd_desc)) < 0)
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goto pause_failed;
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g_timer_stop (cdaudio->timer);
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break;
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case GST_STATE_CHANGE_PAUSED_TO_READY:
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if ((res = cd_stop (cdaudio->cd_desc)) < 0)
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goto stop_failed;
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if ((res = cd_finish (cdaudio->cd_desc)) < 0)
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goto finish_failed;
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cdaudio->cd_desc = -1;
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break;
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case GST_STATE_CHANGE_READY_TO_NULL:
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break;
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default:
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break;
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}
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return ret;
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/* ERRORS */
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init_failed:
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{
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GST_ELEMENT_ERROR (cdaudio, LIBRARY, INIT,
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("Could not init CD device %s. (%d)", cdaudio->device, res), (NULL));
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cdaudio->cd_desc = -1;
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return GST_STATE_CHANGE_FAILURE;
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}
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close_failed:
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{
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GST_ELEMENT_ERROR (cdaudio, LIBRARY, INIT,
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("Could not close CD tray for device %s. (%d)", cdaudio->device, res),
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(NULL));
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return GST_STATE_CHANGE_FAILURE;
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}
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play_failed:
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{
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GST_ELEMENT_ERROR (cdaudio, LIBRARY, INIT,
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("Could not play CD device %s. (%d)", cdaudio->device, res), (NULL));
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return GST_STATE_CHANGE_FAILURE;
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}
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pause_failed:
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{
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GST_ELEMENT_ERROR (cdaudio, LIBRARY, INIT,
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("Could not pause CD device %s. (%d)", cdaudio->device, res), (NULL));
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return GST_STATE_CHANGE_FAILURE;
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}
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stop_failed:
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{
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GST_ELEMENT_ERROR (cdaudio, LIBRARY, INIT,
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("Could not stop CD device %s. (%d)", cdaudio->device, res), (NULL));
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return GST_STATE_CHANGE_FAILURE;
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}
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finish_failed:
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{
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GST_ELEMENT_ERROR (cdaudio, LIBRARY, INIT,
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("Could not finish CD device %s. (%d)", cdaudio->device, res), (NULL));
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return GST_STATE_CHANGE_FAILURE;
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}
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}
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static gboolean
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gst_cdaudio_send_event (GstElement * element, GstEvent * event)
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{
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GstCDAudio *cdaudio;
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gboolean res = TRUE;
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cdaudio = GST_CDAUDIO (element);
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_SEEK:
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{
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gdouble rate;
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GstFormat format;
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GstSeekFlags flags;
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GstSeekType start_type, stop_type;
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gint64 start, stop;
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gint ret;
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gst_event_parse_seek (event, &rate, &format, &flags, &start_type, &start,
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&stop_type, &stop);
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/* FIXME, implement more formats */
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if (format != GST_FORMAT_TIME)
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goto wrong_format;
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if (rate != 1.0)
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goto wrong_rate;
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if (start_type != GST_SEEK_TYPE_SET)
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goto unsupported;
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ret = cd_play_pos (cdaudio->cd_desc, 1, start / GST_SECOND);
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if (ret < 0)
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goto seek_failed;
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}
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default:
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res = FALSE;
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break;
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}
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done:
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gst_event_unref (event);
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return res;
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/* ERRORS */
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wrong_format:
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{
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GST_DEBUG_OBJECT (cdaudio, "only seek in TIME is supported");
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res = FALSE;
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goto done;
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}
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wrong_rate:
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{
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GST_DEBUG_OBJECT (cdaudio, "only seek with 1.0 rate is supported");
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res = FALSE;
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goto done;
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}
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unsupported:
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{
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GST_DEBUG_OBJECT (cdaudio, "only seek SET is supported");
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res = FALSE;
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goto done;
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}
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seek_failed:
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{
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GST_DEBUG_OBJECT (cdaudio, "seek failed");
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res = FALSE;
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goto done;
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}
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}
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static const GstQueryType *
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gst_cdaudio_get_query_types (GstElement * element)
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{
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static const GstQueryType query_types[] = {
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GST_QUERY_DURATION,
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GST_QUERY_POSITION,
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0
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};
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return query_types;
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}
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static gboolean
|
|
gst_cdaudio_query (GstElement * element, GstQuery * query)
|
|
{
|
|
GstCDAudio *cdaudio;
|
|
gboolean res = TRUE;
|
|
gulong micros;
|
|
gdouble seconds;
|
|
|
|
cdaudio = GST_CDAUDIO (element);
|
|
|
|
GST_LOG_OBJECT (element, "handling %s query",
|
|
gst_query_type_get_name (GST_QUERY_TYPE (query)));
|
|
|
|
/* take new snapshot every 1000 miliseconds */
|
|
seconds = g_timer_elapsed (cdaudio->timer, µs);
|
|
if (micros > 1000 || seconds > 1) {
|
|
cd_stat (cdaudio->cd_desc, &cdaudio->info);
|
|
g_timer_start (cdaudio->timer);
|
|
}
|
|
|
|
switch (GST_QUERY_TYPE (query)) {
|
|
case GST_QUERY_DURATION:
|
|
{
|
|
GstFormat dest_format;
|
|
gint64 dest_val;
|
|
|
|
gst_query_parse_duration (query, &dest_format, NULL);
|
|
|
|
switch (dest_format) {
|
|
case GST_FORMAT_TIME:
|
|
dest_val = (cdaudio->info.disc_length.minutes * 60 +
|
|
cdaudio->info.disc_length.seconds) * GST_SECOND;
|
|
break;
|
|
default:
|
|
{
|
|
if (dest_format == track_format) {
|
|
dest_val = cdaudio->info.disc_total_tracks;
|
|
} else {
|
|
res = FALSE;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
if (res)
|
|
gst_query_set_duration (query, dest_format, dest_val);
|
|
break;
|
|
}
|
|
case GST_QUERY_POSITION:
|
|
{
|
|
GstFormat dest_format;
|
|
gint64 dest_val;
|
|
|
|
gst_query_parse_position (query, &dest_format, NULL);
|
|
|
|
switch (dest_format) {
|
|
case GST_FORMAT_TIME:
|
|
dest_val = (cdaudio->info.disc_time.minutes * 60 +
|
|
cdaudio->info.disc_time.seconds) * GST_SECOND;
|
|
break;
|
|
default:
|
|
{
|
|
if (dest_format == track_format) {
|
|
dest_val = cdaudio->info.disc_current_track;
|
|
} else {
|
|
res = FALSE;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
if (res)
|
|
gst_query_set_position (query, dest_format, dest_val);
|
|
break;
|
|
}
|
|
default:
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
return res;
|
|
}
|
|
|
|
|
|
static gboolean
|
|
plugin_init (GstPlugin * plugin)
|
|
{
|
|
if (!gst_element_register (plugin, "cdaudio", GST_RANK_NONE,
|
|
GST_TYPE_CDAUDIO))
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/*** GSTURIHANDLER INTERFACE *************************************************/
|
|
|
|
static guint
|
|
cdaudio_uri_get_type (void)
|
|
{
|
|
return GST_URI_SRC;
|
|
}
|
|
|
|
static gchar **
|
|
cdaudio_uri_get_protocols (void)
|
|
{
|
|
static gchar *protocols[] = { (char *) "cd", NULL };
|
|
|
|
return protocols;
|
|
}
|
|
|
|
static const gchar *
|
|
cdaudio_uri_get_uri (GstURIHandler * handler)
|
|
{
|
|
GstCDAudio *cdaudio = GST_CDAUDIO (handler);
|
|
|
|
return cdaudio->uri;
|
|
}
|
|
|
|
static gboolean
|
|
cdaudio_uri_set_uri (GstURIHandler * handler, const gchar * uri)
|
|
{
|
|
gchar *protocol, *location;
|
|
gboolean ret;
|
|
|
|
ret = TRUE;
|
|
|
|
//GstCDAudio *cdaudio = GST_CDAUDIO(handler);
|
|
|
|
protocol = gst_uri_get_protocol (uri);
|
|
if (strcmp (protocol, "cd") != 0)
|
|
goto wrong_protocol;
|
|
|
|
g_free (protocol);
|
|
|
|
location = gst_uri_get_location (uri);
|
|
/*
|
|
cdaudio->uri_track = strtol(location,NULL,10);
|
|
if (cdaudio->uri_track > 0) {
|
|
cdaudio->seek_request = cdaudio->uri_track;
|
|
}
|
|
*/
|
|
g_free (location);
|
|
|
|
return ret;
|
|
|
|
/* ERRORS */
|
|
wrong_protocol:
|
|
{
|
|
g_free (protocol);
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
static void
|
|
cdaudio_uri_handler_init (gpointer g_iface, gpointer iface_data)
|
|
{
|
|
GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface;
|
|
|
|
iface->get_type = cdaudio_uri_get_type;
|
|
iface->get_protocols = cdaudio_uri_get_protocols;
|
|
iface->get_uri = cdaudio_uri_get_uri;
|
|
iface->set_uri = cdaudio_uri_set_uri;
|
|
}
|
|
|
|
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
|
|
GST_VERSION_MINOR,
|
|
"cdaudio",
|
|
"Play CD audio through the CD Drive",
|
|
plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)
|