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_16KHZ 4
  34 #define SWFDEC_AUDIO_CODEC_NELLYMOSER_8KHZ 5
  35 #define SWFDEC_AUDIO_CODEC_NELLYMOSER 6
  36 #define SWFDEC_AUDIO_CODEC_ALAW 7
  37 #define SWFDEC_AUDIO_CODEC_MULAW 8
  38 #define SWFDEC_AUDIO_CODEC_AAC 10
  39 #define SWFDEC_AUDIO_CODEC_SPEEX 11
  40 #define SWFDEC_AUDIO_CODEC_MP3_8KHZ 14
  41
  42
  43 typedef struct _SwfdecAudioDecoder SwfdecAudioDecoder;
  44 typedef struct _SwfdecAudioDecoderClass SwfdecAudioDecoderClass;
  45
  46 #define SWFDEC_TYPE_AUDIO_DECODER                    (swfdec_audio_decoder_get_type())
  47 #define SWFDEC_IS_AUDIO_DECODER(obj)                 (G_TYPE_CHECK_INSTANCE_TYPE ((obj), SWFDEC_TYPE_AUDIO_DECODER))
  48 #define SWFDEC_IS_AUDIO_DECODER_CLASS(klass)         (G_TYPE_CHECK_CLASS_TYPE ((klass), SWFDEC_TYPE_AUDIO_DECODER))
  49 #define SWFDEC_AUDIO_DECODER(obj)                    (G_TYPE_CHECK_INSTANCE_CAST ((obj), SWFDEC_TYPE_AUDIO_DECODER, SwfdecAudioDecoder))
  50 #define SWFDEC_AUDIO_DECODER_CLASS(klass)            (G_TYPE_CHECK_CLASS_CAST ((klass), SWFDEC_TYPE_AUDIO_DECODER, SwfdecAudioDecoderClass))
  51 #define SWFDEC_AUDIO_DECODER_GET_CLASS(obj)          (G_TYPE_INSTANCE_GET_CLASS ((obj), SWFDEC_TYPE_AUDIO_DECODER, SwfdecAudioDecoderClass))
  52
  53 struct _SwfdecAudioDecoder
  54 {
  55   GObject               object;
  56
  57   /*< private >*/
  58   guint                 codec;          /* codec this decoder uses */
  59   SwfdecAudioFormat     format;         /* format the codec was initialized with */
  60   gboolean              error;          /* if this decoder is in an error state */
  61 };
  62
  63 struct _SwfdecAudioDecoderClass
  64 {
  65   /*< private >*/
  66   GObjectClass          object_class;
  67
  68   /*< public >*/
  69   gboolean              (* prepare)     (guint                  codec,
  70                                          SwfdecAudioFormat      format,
  71                                          char **                missing);
  72   SwfdecAudioDecoder *  (* create)      (guint                  codec,
  73                                          SwfdecAudioFormat      format,
  74                                          SwfdecBuffer *         data);
  75
  76   void                  (* push)        (SwfdecAudioDecoder *   decoder,
  77                                          SwfdecBuffer *         buffer);
  78   SwfdecBuffer *        (* pull)        (SwfdecAudioDecoder *   decoder);
  79 };
  80
  81 GType                   swfdec_audio_decoder_get_type   (void);
  82
  83 void                    swfdec_audio_decoder_register   (GType                  type);
  84
  85 gboolean                swfdec_audio_decoder_prepare    (guint                  codec,
  86                                                          SwfdecAudioFormat      format,
  87                                                          char **                missing);
  88 SwfdecAudioDecoder *    swfdec_audio_decoder_new        (guint                  codec,
  89                                                          SwfdecAudioFormat      format,
  90                                                          SwfdecBuffer *         data);
  91
  92 void                    swfdec_audio_decoder_push       (SwfdecAudioDecoder *   decoder,
  93                                                          SwfdecBuffer *         buffer);
  94 SwfdecBuffer *          swfdec_audio_decoder_pull       (SwfdecAudioDecoder *   decoder);
  95 gboolean                swfdec_audio_decoder_uses_format(SwfdecAudioDecoder *   decoder,
  96                                                          guint                  codec,
  97                                                          SwfdecAudioFormat      format);
  98
  99 /* for subclasses */
 100 void                    swfdec_audio_decoder_error      (SwfdecAudioDecoder *   decoder,
 101                                                          const char *           error,
 102                                                          ...) G_GNUC_PRINTF (2, 3);
 103 void                    swfdec_audio_decoder_errorv     (SwfdecAudioDecoder *   decoder,
 104                                                          const char *           error,
 105                                                          va_list                args);
 106
 107
 108
 109 G_END_DECLS
 110 #endif