First attempt at a cd player plugins that uses libcdaudio.

Original commit message from CVS:
First attempt at a cd player plugins that uses libcdaudio.

diff --git a/ext/cdaudio/Makefile.am b/ext/cdaudio/Makefile.am
new file mode 100644 (file)
index 0000000..bbd758d
--- /dev/null
+++ b/ext/cdaudio/Makefile.am
@@ -0,0 +1,8 @@
+plugindir = $(libdir)/gst
+
+plugin_LTLIBRARIES = libgstcdaudio.la
+
+libgstcdaudio_la_SOURCES = gstcdaudio.c 
+libgstcdaudio_la_CFLAGS = $(GST_CFLAGS)
+libgstcdaudio_la_LIBADD =
+libgstcdaudio_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS) -lcdaudio

diff --git a/ext/cdaudio/gstcdaudio.c b/ext/cdaudio/gstcdaudio.c
new file mode 100644 (file)
index 0000000..e6133b2
--- /dev/null
+++ b/ext/cdaudio/gstcdaudio.c
@@ -0,0 +1,519 @@
+/* GStreamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.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.
+ */
+
+#include <cdaudio.h>
+
+#include <gst/gst.h>
+
+#define GST_TYPE_CDAUDIO               (gst_cdaudio_get_type())
+#define GST_CDAUDIO(obj)               (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_CDAUDIO,GstCDAudio))
+#define GST_CDAUDIO_CLASS(klass)       (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_CDAUDIO,GstCDAudioClass))
+#define GST_IS_CDAUDIO(obj)            (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_CDAUDIO))
+#define GST_IS_CDAUDIO_CLASS(klass)    (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_CDAUDIO))
+
+typedef struct _GstCDAudio GstCDAudio;
+typedef struct _GstCDAudioClass GstCDAudioClass;
+
+struct _GstCDAudio {
+  GstBin        element;
+       
+  /* properties */
+  gchar        *device;
+
+  gint                  cd_desc;
+  gulong        discid;
+
+  gboolean      was_playing;
+
+  struct disc_info     info;
+  struct disc_volume   volume;
+
+  GTimer       *timer;
+};
+
+struct _GstCDAudioClass {
+  GstBinClass   parent_class;
+
+  void                 (*close_tray)           (GstElement *element);
+  /* signal callbacks */
+  void                 (*track_change)         (GstElement *element, guint track);
+};
+
+/* props */
+enum
+{
+  ARG_0,
+  ARG_DEVICE,
+  ARG_DISCID,
+  ARG_VOLUME_FR,
+  ARG_VOLUME_FL,
+  ARG_VOLUME_BR,
+  ARG_VOLUME_BL,
+};
+
+/* signals */
+enum
+{
+  TRACK_CHANGE,
+  LAST_SIGNAL,
+};
+
+static void            gst_cdaudio_class_init          (GstCDAudioClass *klass);
+static void            gst_cdaudio_init                        (GstCDAudio *cdaudio);
+static void            gst_cdaudio_dispose             (GObject *object);
+
+static void            gst_cdaudio_set_property                (GObject *object, guint prop_id, 
+                                                        const GValue *value, GParamSpec *spec);
+static void            gst_cdaudio_get_property                (GObject *object, guint prop_id,
+                                                        GValue *value, GParamSpec *spec);
+static GstElementStateReturn 
+                       gst_cdaudio_change_state        (GstElement * element);
+
+static const GstEventMask*     gst_cdaudio_get_event_masks     (GstElement *element);
+static gboolean                gst_cdaudio_send_event          (GstElement *element, GstEvent *event);
+static const GstFormat*        gst_cdaudio_get_formats         (GstElement *element);
+static gboolean                gst_cdaudio_convert             (GstElement *element,
+                                                                GstFormat  src_format,  gint64  src_value,
+                                                                GstFormat *dest_format, gint64 *dest_value);
+static const GstQueryType*     gst_cdaudio_get_query_types     (GstElement *element);
+static gboolean                gst_cdaudio_query               (GstElement *element, GstQueryType type,
+                                                                GstFormat *format, gint64 *value);
+
+static GstFormat track_format;
+static GstFormat sector_format;
+                       
+static GstElementClass *parent_class;
+static guint gst_cdaudio_signals[LAST_SIGNAL] = { 0 };
+
+static GstElementDetails gst_cdaudio_details = {
+  "CD Player",
+  "Generic/Bin",
+  "Play CD audio through the CD Drive",
+  VERSION,
+  "Wim Taymans <wim.taymans@chello.be>",
+  "(C) 2002",
+};
+
+
+GType
+gst_cdaudio_get_type (void)
+{
+  static GType gst_cdaudio_type = 0;
+
+  if (!gst_cdaudio_type) {
+    static const GTypeInfo gst_cdaudio_info = {
+      sizeof (GstCDAudioClass),
+      NULL,
+      NULL,
+      (GClassInitFunc) gst_cdaudio_class_init,
+      NULL,
+      NULL,
+      sizeof (GstCDAudio),
+      0,
+      (GInstanceInitFunc) gst_cdaudio_init,
+      NULL
+    };
+    gst_cdaudio_type = g_type_register_static (GST_TYPE_BIN, "GstCDAudio", &gst_cdaudio_info, 0);
+
+    track_format = gst_format_register ("track", "CD track");
+    sector_format = gst_format_register ("sector", "CD sector");
+  }
+
+  return gst_cdaudio_type;
+}
+
+static void
+gst_cdaudio_class_init (GstCDAudioClass * 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->set_property = gst_cdaudio_set_property;
+  gobject_klass->get_property = gst_cdaudio_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_DISCID,
+    g_param_spec_ulong ("discid", "Disc ID", "CDDB Disc ID",
+                        0, G_MAXULONG, 0, G_PARAM_READABLE));
+  g_object_class_install_property (gobject_klass, ARG_VOLUME_FL,
+    g_param_spec_int ("volume_fl", "Volume fl", "Front left volume", 
+                     0, 255, 255, G_PARAM_READWRITE));
+  g_object_class_install_property (gobject_klass, ARG_VOLUME_FR,
+    g_param_spec_int ("volume_fr", "Volume fr", "Front right volume", 
+                     0, 255, 255, G_PARAM_READWRITE));
+  g_object_class_install_property (gobject_klass, ARG_VOLUME_BL,
+    g_param_spec_int ("volume_bl", "Volume bl", "Back left volume", 
+                     0, 255, 255, G_PARAM_READWRITE));
+  g_object_class_install_property (gobject_klass, ARG_VOLUME_BR,
+    g_param_spec_int ("volume_br", "Volume br", "Back right volume", 
+                     0, 255, 255, G_PARAM_READWRITE));
+
+  gst_cdaudio_signals[TRACK_CHANGE] =
+    g_signal_new ("track_change", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
+                 G_STRUCT_OFFSET (GstCDAudioClass, track_change), NULL, NULL, 
+                 gst_marshal_VOID__INT, G_TYPE_NONE, 1, G_TYPE_INT);
+
+  gobject_klass->dispose = GST_DEBUG_FUNCPTR (gst_cdaudio_dispose);
+
+  gstelement_klass->change_state       = GST_DEBUG_FUNCPTR (gst_cdaudio_change_state);
+  gstelement_klass->get_event_masks    = GST_DEBUG_FUNCPTR (gst_cdaudio_get_event_masks);
+  gstelement_klass->send_event         = GST_DEBUG_FUNCPTR (gst_cdaudio_send_event);
+  gstelement_klass->get_formats                = GST_DEBUG_FUNCPTR (gst_cdaudio_get_formats);
+  gstelement_klass->convert            = GST_DEBUG_FUNCPTR (gst_cdaudio_convert);
+  gstelement_klass->get_query_types    = GST_DEBUG_FUNCPTR (gst_cdaudio_get_query_types);
+  gstelement_klass->query              = GST_DEBUG_FUNCPTR (gst_cdaudio_query);
+}
+
+static void
+gst_cdaudio_init (GstCDAudio * cdaudio)
+{
+  cdaudio->device = g_strdup ("/dev/cdrom");
+  cdaudio->was_playing = FALSE;
+  cdaudio->timer = g_timer_new ();
+
+  GST_FLAG_SET (cdaudio, GST_BIN_FLAG_MANAGER);
+  GST_FLAG_SET (cdaudio, GST_BIN_SELF_SCHEDULABLE);
+}
+
+static void
+gst_cdaudio_dispose (GObject * object)
+{
+  GstCDAudio *cdaudio;
+
+  cdaudio = GST_CDAUDIO (object);
+  g_timer_destroy (cdaudio->timer);
+  g_free (cdaudio->device);
+
+  if (G_OBJECT_CLASS (parent_class)->dispose) {
+    G_OBJECT_CLASS (parent_class)->dispose (object);
+  }
+}
+
+static void
+gst_cdaudio_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * spec)
+{
+  GstCDAudio *cdaudio;
+
+  g_return_if_fail (GST_IS_CDAUDIO (object));
+
+  cdaudio = GST_CDAUDIO (object);
+
+  switch (prop_id) {
+    case ARG_DEVICE:
+      break;
+    case ARG_VOLUME_FR:
+      break;
+    case ARG_VOLUME_FL:
+      break;
+    case ARG_VOLUME_BR:
+      break;
+    case ARG_VOLUME_BL:
+      break;
+    default:
+      break;
+  }
+}
+
+static void
+gst_cdaudio_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * spec)
+{
+  GstCDAudio *cdaudio;
+
+  g_return_if_fail (GST_IS_CDAUDIO (object));
+
+  cdaudio = GST_CDAUDIO (object);
+
+  switch (prop_id) {
+    case ARG_DEVICE:
+      g_value_set_string (value, cdaudio->device);
+      break;
+    case ARG_DISCID:
+      g_value_set_ulong (value, cdaudio->discid);
+      break;
+    case ARG_VOLUME_FR:
+      g_value_set_int (value, cdaudio->volume.vol_front.right);
+      break;
+    case ARG_VOLUME_FL:
+      g_value_set_int (value, cdaudio->volume.vol_front.left);
+      break;
+    case ARG_VOLUME_BR:
+      g_value_set_int (value, cdaudio->volume.vol_back.right);
+      break;
+    case ARG_VOLUME_BL:
+      g_value_set_int (value, cdaudio->volume.vol_back.left);
+      break;
+    default:
+      break;
+  }
+}
+
+static void
+print_track_info (GstCDAudio *cdaudio)
+{
+  gint i;
+
+  for (i = 0; i < cdaudio->info.disc_total_tracks; i++) {
+    g_print ("%d %d:%02d\n", i, 
+                   cdaudio->info.disc_track[i].track_length.minutes,
+                   cdaudio->info.disc_track[i].track_length.seconds);
+  }
+}
+
+static GstElementStateReturn
+gst_cdaudio_change_state (GstElement * element)
+{
+  GstCDAudio *cdaudio;
+
+  cdaudio = GST_CDAUDIO (element);
+
+  switch (GST_STATE_TRANSITION (element)) {
+    case GST_STATE_NULL_TO_READY:
+      break;
+    case GST_STATE_READY_TO_PAUSED:
+      cdaudio->cd_desc = cd_init_device(cdaudio->device);
+      if (cdaudio->cd_desc < 0) 
+       return GST_STATE_FAILURE;
+
+      /* close tray */
+      if (cd_close (cdaudio->cd_desc) < 0)
+       return GST_STATE_FAILURE;
+
+      if (cd_stat (cdaudio->cd_desc, &cdaudio->info) < 0)
+       return GST_STATE_FAILURE;
+
+      print_track_info (cdaudio);
+
+      cdaudio->discid = cddb_discid (cdaudio->cd_desc);
+      g_object_notify (G_OBJECT (cdaudio), "discid");
+
+      cdaudio->was_playing = FALSE;
+      break;
+    case GST_STATE_PAUSED_TO_PLAYING:
+    {
+      gint res;
+
+      if (cdaudio->was_playing)
+        res = cd_resume (cdaudio->cd_desc);
+      else
+        res = cd_play (cdaudio->cd_desc, 1);
+
+      if (res < 0) 
+       return GST_STATE_FAILURE;
+
+      cdaudio->was_playing = TRUE;
+      g_timer_start (cdaudio->timer);
+      break;
+    }
+    case GST_STATE_PLAYING_TO_PAUSED:
+      if (cd_pause (cdaudio->cd_desc) < 0)
+       return GST_STATE_FAILURE;
+      g_timer_stop (cdaudio->timer);
+      break;
+    case GST_STATE_PAUSED_TO_READY:
+      if (cd_stop (cdaudio->cd_desc) < 0)
+       return GST_STATE_FAILURE;
+      if (cd_finish (cdaudio->cd_desc) < 0)
+       return GST_STATE_FAILURE;
+      break;
+    case GST_STATE_READY_TO_NULL:
+      break;
+    default:
+      break;
+  }
+
+  if (GST_ELEMENT_CLASS (parent_class)->change_state) {
+    return GST_ELEMENT_CLASS (parent_class)->change_state (element);
+  }
+
+  return GST_STATE_SUCCESS;
+}
+
+GST_ELEMENT_EVENT_MASK_FUNCTION (gst_cdaudio_get_event_masks,
+  { GST_EVENT_SEEK, GST_SEEK_FLAG_FLUSH },
+  { GST_EVENT_SEEK_SEGMENT, GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_SEGMENT_LOOP }
+)
+
+gboolean
+gst_cdaudio_send_event (GstElement *element, GstEvent *event)
+{
+  GstCDAudio *cdaudio;
+  gboolean res = TRUE;
+
+  cdaudio = GST_CDAUDIO (element);
+
+  switch (GST_EVENT_TYPE (event)) {
+    case GST_EVENT_SEEK:
+      switch (GST_EVENT_SEEK_FORMAT (event)) {
+       case GST_FORMAT_TIME:
+        {
+         struct disc_timeval time;
+
+         time.minutes = GST_EVENT_SEEK_OFFSET (event) / (60 * GST_SECOND);
+         time.seconds = (GST_EVENT_SEEK_OFFSET (event) / GST_SECOND) % 60;
+               
+          cd_advance (cdaudio->cd_desc, time);
+          break;
+       }
+        default:
+          res = FALSE;
+          break;
+      }
+      break;
+    default:
+      res = FALSE;
+      break;
+  }
+  gst_event_unref (event);
+  return res;
+}
+
+const GstFormat*
+gst_cdaudio_get_formats (GstElement *element)
+{
+  static GstFormat formats[] = {
+    GST_FORMAT_TIME,
+    GST_FORMAT_BYTES,
+    GST_FORMAT_UNITS,
+    0,                 /* fillted below */
+    0,                 /* fillted below */
+    0,
+  };
+
+  formats[3] = track_format;
+  formats[4] = sector_format;
+
+  return formats;
+}
+
+gboolean
+gst_cdaudio_convert (GstElement *element,
+                     GstFormat  src_format,  gint64  src_value,
+                     GstFormat *dest_format, gint64 *dest_value)
+{
+  return FALSE;
+}
+
+const GstQueryType*
+gst_cdaudio_get_query_types (GstElement *element)
+{
+  static const GstQueryType query_types[] = {
+    GST_QUERY_TOTAL,
+    GST_QUERY_POSITION,
+    GST_QUERY_START,
+    GST_QUERY_SEGMENT_END,
+    0
+  };
+  return query_types;
+}
+
+gboolean
+gst_cdaudio_query (GstElement *element, GstQueryType type,
+                  GstFormat *format, gint64 *value)
+{
+  GstCDAudio *cdaudio;
+  gboolean res = TRUE;
+  gulong micros;
+  gdouble seconds;
+
+  cdaudio = GST_CDAUDIO (element);
+
+  /* take new snapshot every 100000 miliseconds */
+  seconds = g_timer_elapsed (cdaudio->timer, &micros);
+  if (micros > 100000) {
+    cd_stat (cdaudio->cd_desc, &cdaudio->info);
+    g_timer_start (cdaudio->timer);
+  }
+
+  switch (type) {
+    case GST_QUERY_TOTAL:
+      switch (*format) {
+       case GST_FORMAT_DEFAULT:
+         *format = GST_FORMAT_TIME;
+       case GST_FORMAT_TIME:
+          *value = (cdaudio->info.disc_length.minutes * 60 +
+                    cdaudio->info.disc_length.seconds) * GST_SECOND;
+         break;
+       default:
+       {
+          if (*format == track_format) {
+            *value = cdaudio->info.disc_total_tracks;
+         }
+         else {
+            res = FALSE;
+         }
+         break;
+       }
+      }
+      break;
+    case GST_QUERY_POSITION:
+      switch (*format) {
+       case GST_FORMAT_DEFAULT:
+         *format = GST_FORMAT_TIME;
+       case GST_FORMAT_TIME:
+          *value = (cdaudio->info.disc_time.minutes * 60 +
+                    cdaudio->info.disc_time.seconds) * GST_SECOND;
+         break;
+       default:
+       {
+          if (*format == track_format) {
+            *value = cdaudio->info.disc_current_track;
+         }
+         else {
+            res = FALSE;
+         }
+         break;
+       }
+      }
+      break;
+    default:
+      res = FALSE;
+      break;
+  }
+  return res;
+}
+
+static gboolean
+plugin_init (GModule * module, GstPlugin * plugin)
+{
+  GstElementFactory *factory;
+
+  factory = gst_element_factory_new ("cdaudio", GST_TYPE_CDAUDIO, &gst_cdaudio_details);
+  g_return_val_if_fail (factory != NULL, FALSE);
+  gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
+
+  gst_plugin_set_longname (plugin, "CD Player");
+
+  return TRUE;
+}
+
+GstPluginDesc plugin_desc = {
+  GST_VERSION_MAJOR,
+  GST_VERSION_MINOR,
+  "cdaudio",
+  plugin_init
+};