swfdec/swfdec_audio_decoder.h

   1 /* Swfdec
   2  * Copyright (C) 2006-2008 Benjamin Otte <otte@gnome.org>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor,
  17  * Boston, MA  02110-1301  USA
  18  */
  19
  20 #ifndef _SWFDEC_AUDIO_DECODER_H_
  21 #define _SWFDEC_AUDIO_DECODER_H_
  22
  23 #include <swfdec/swfdec_buffer.h>
  24 #include <swfdec/swfdec_audio_internal.h>
  25
  26 G_BEGIN_DECLS
  27
  28
  29 #define SWFDEC_AUDIO_CODEC_UNDEFINED 0
  30 #define SWFDEC_AUDIO_CODEC_ADPCM 1
  31 #define SWFDEC_AUDIO_CODEC_MP3 2
  32 #define SWFDEC_AUDIO_CODEC_UNCOMPRESSED 3
  33 #define SWFDEC_AUDIO_CODEC_NELLYMOSER_8KHZ 5
  34 #define SWFDEC_AUDIO_CODEC_NELLYMOSER 6
  35
  36
  37 typedef struct _SwfdecAudioDecoder SwfdecAudioDecoder;
  38 typedef struct _SwfdecAudioDecoderClass SwfdecAudioDecoderClass;
  39
  40 #define SWFDEC_TYPE_AUDIO_DECODER                    (swfdec_audio_decoder_get_type())
  41 #define SWFDEC_IS_AUDIO_DECODER(obj)                 (G_TYPE_CHECK_INSTANCE_TYPE ((obj), SWFDEC_TYPE_AUDIO_DECODER))
  42 #define SWFDEC_IS_AUDIO_DECODER_CLASS(klass)         (G_TYPE_CHECK_CLASS_TYPE ((klass), SWFDEC_TYPE_AUDIO_DECODER))
  43 #define SWFDEC_AUDIO_DECODER(obj)                    (G_TYPE_CHECK_INSTANCE_CAST ((obj), SWFDEC_TYPE_AUDIO_DECODER, SwfdecAudioDecoder))
  44 #define SWFDEC_AUDIO_DECODER_CLASS(klass)            (G_TYPE_CHECK_CLASS_CAST ((klass), SWFDEC_TYPE_AUDIO_DECODER, SwfdecAudioDecoderClass))
  45 #define SWFDEC_AUDIO_DECODER_GET_CLASS(obj)          (G_TYPE_INSTANCE_GET_CLASS ((obj), SWFDEC_TYPE_AUDIO_DECODER, SwfdecAudioDecoderClass))
  46
  47 struct _SwfdecAudioDecoder
  48 {
  49   GObject               object;
  50
  51   /*< private >*/
  52   guint                 codec;          /* codec this decoder uses */
  53   SwfdecAudioFormat     format;         /* format the codec was initialized with */
  54   gboolean              error;          /* if this decoder is in an error state */
  55 };
  56
  57 struct _SwfdecAudioDecoderClass
  58 {
  59   /*< private >*/
  60   GObjectClass          object_class;
  61
  62   /*< public >*/
  63   gboolean              (* prepare)     (guint                  codec,
  64                                          SwfdecAudioFormat      format,
  65                                          char **                missing);
  66   SwfdecAudioDecoder *  (* create)      (guint                  codec,
  67                                          SwfdecAudioFormat      format);
  68
  69   void                  (* push)        (SwfdecAudioDecoder *   decoder,
  70                                          SwfdecBuffer *         buffer);
  71   SwfdecBuffer *        (* pull)        (SwfdecAudioDecoder *   decoder);
  72 };
  73
  74 GType                   swfdec_audio_decoder_get_type   (void);
  75
  76 void                    swfdec_audio_decoder_register   (GType                  type);
  77
  78 gboolean                swfdec_audio_decoder_prepare    (guint                  codec,
  79                                                          SwfdecAudioFormat      format,
  80                                                          char **                missing);
  81 SwfdecAudioDecoder *    swfdec_audio_decoder_new        (guint                  codec,
  82                                                          SwfdecAudioFormat      format);
  83
  84 void                    swfdec_audio_decoder_push       (SwfdecAudioDecoder *   decoder,
  85                                                          SwfdecBuffer *         buffer);
  86 SwfdecBuffer *          swfdec_audio_decoder_pull       (SwfdecAudioDecoder *   decoder);
  87 gboolean                swfdec_audio_decoder_uses_format(SwfdecAudioDecoder *   decoder,
  88                                                          guint                  codec,
  89                                                          SwfdecAudioFormat      format);
  90
  91 /* for subclasses */
  92 void                    swfdec_audio_decoder_error      (SwfdecAudioDecoder *   decoder,
  93                                                          const char *           error,
  94                                                          ...) G_GNUC_PRINTF (2, 3);
  95 void                    swfdec_audio_decoder_errorv     (SwfdecAudioDecoder *   decoder,
  96                                                          const char *           error,
  97                                                          va_list                args);
  98
  99
 100
 101 G_END_DECLS
 102 #endif