backends/rb-encoder.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-
   2  *
   3  *  Copyright (C) 2006  James Livingston  <jrl@ids.org.au>
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program; if not, write to the Free Software
  17  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA.
  18  *
  19  */
  20
  21 #include <config.h>
  22
  23 #include "rb-encoder.h"
  24 #include "rb-encoder-gst.h"
  25
  26 /* Signals */
  27 enum {
  28         PROGRESS,
  29         COMPLETED,
  30         ERROR,
  31         LAST_SIGNAL
  32 };
  33
  34 static guint signals[LAST_SIGNAL] = { 0 };
  35
  36 static void
  37 rb_encoder_interface_init (RBEncoderIface *iface)
  38 {
  39         signals[PROGRESS] =
  40                 g_signal_new ("progress",
  41                               G_TYPE_FROM_INTERFACE (iface),
  42                               G_SIGNAL_RUN_LAST,
  43                               G_STRUCT_OFFSET (RBEncoderIface, progress),
  44                               NULL, NULL,
  45                               g_cclosure_marshal_VOID__DOUBLE,
  46                               G_TYPE_NONE,
  47                               1, G_TYPE_DOUBLE);
  48         signals[COMPLETED] =
  49                 g_signal_new ("completed",
  50                               G_TYPE_FROM_INTERFACE (iface),
  51                               G_SIGNAL_RUN_LAST,
  52                               G_STRUCT_OFFSET (RBEncoderIface, completed),
  53                               NULL, NULL,
  54                               g_cclosure_marshal_VOID__VOID,
  55                               G_TYPE_NONE,
  56                               0);
  57         signals[ERROR] =
  58                 g_signal_new ("error",
  59                               G_TYPE_FROM_INTERFACE (iface),
  60                               G_SIGNAL_RUN_LAST,
  61                               G_STRUCT_OFFSET (RBEncoderIface, error),
  62                               NULL, NULL,
  63                               g_cclosure_marshal_VOID__POINTER,
  64                               G_TYPE_NONE,
  65                               1, G_TYPE_POINTER);
  66
  67 }
  68
  69 GType
  70 rb_encoder_get_type (void)
  71 {
  72         static GType our_type = 0;
  73
  74         if (!our_type) {
  75                 static const GTypeInfo our_info = {
  76                         sizeof (RBEncoderIface),
  77                         NULL,   /* base_init */
  78                         NULL,   /* base_finalize */
  79                         (GClassInitFunc)rb_encoder_interface_init,
  80                         NULL,   /* class_finalize */
  81                         NULL,   /* class_data */
  82                         0,
  83                         0,
  84                         NULL
  85                 };
  86
  87                 our_type = g_type_register_static (G_TYPE_INTERFACE, "RBEncoder", &our_info, 0);
  88         }
  89
  90         return our_type;
  91 }
  92
  93 gboolean
  94 rb_encoder_encode (RBEncoder *encoder,
  95                    RhythmDBEntry *entry,
  96                    const char *dest,
  97                    const char *mime_type)
  98 {
  99         RBEncoderIface *iface = RB_ENCODER_GET_IFACE (encoder);
 100
 101         return iface->encode (encoder, entry, dest, mime_type);
 102 }
 103
 104 void
 105 rb_encoder_cancel (RBEncoder *encoder)
 106 {
 107         RBEncoderIface *iface = RB_ENCODER_GET_IFACE (encoder);
 108
 109         iface->cancel (encoder);
 110 }
 111
 112 RBEncoder*
 113 rb_encoder_new (void)
 114 {
 115         return rb_encoder_gst_new ();
 116 }
 117
 118 void
 119 _rb_encoder_emit_progress (RBEncoder *encoder, double fraction)
 120 {
 121         g_signal_emit (encoder, signals[PROGRESS], 0, fraction);
 122 }
 123
 124 void
 125 _rb_encoder_emit_completed (RBEncoder *encoder)
 126 {
 127         g_signal_emit (encoder, signals[COMPLETED], 0);
 128 }
 129
 130 void
 131 _rb_encoder_emit_error (RBEncoder *encoder, GError *error)
 132 {
 133         g_signal_emit (encoder, signals[ERROR], 0, error);
 134 }
 135
 136 GQuark
 137 rb_encoder_error_quark (void)
 138 {
 139         static GQuark quark = 0;
 140         if (!quark)
 141                 quark = g_quark_from_static_string ("rb_encoder_error");
 142
 143         return quark;
 144 }