swfdec/swfdec_audio_internal.h

   1 /* Swfdec
   2  * Copyright (C) 2003-2006 David Schleef <ds@schleef.org>
   3  *               2005-2006 Eric Anholt <eric@anholt.net>
   4  *               2006-2008 Benjamin Otte <otte@gnome.org>
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor,
  19  * Boston, MA  02110-1301  USA
  20  */
  21
  22 #ifndef _SWFDEC_AUDIO_INTERNAL_H_
  23 #define _SWFDEC_AUDIO_INTERNAL_H_
  24
  25 #include <swfdec/swfdec.h>
  26 #include <swfdec/swfdec_audio.h>
  27 #include <swfdec/swfdec_bits.h>
  28 #include <swfdec/swfdec_sound_matrix.h>
  29 #include <swfdec/swfdec_types.h>
  30
  31 G_BEGIN_DECLS
  32
  33 typedef guint SwfdecAudioFormat;
  34 #define SWFDEC_IS_AUDIO_FORMAT(format) ((format) <= 0xF)
  35 #define SWFDEC_AUDIO_FORMAT_INVALID ((SwfdecAudioFormat) -1)
  36
  37
  38 struct _SwfdecAudio {
  39   GObject                       object;
  40
  41   SwfdecPlayer *                player;         /* the player that plays us */
  42   gboolean                      added;          /* set to TRUE after the added signal has been emitted */
  43   SwfdecActor *                 actor;          /* NULL or movieclip that controls our volume */
  44   const SwfdecSoundMatrix *     matrix;         /* matrix this audio references or NULL if none */
  45   SwfdecSoundMatrix             matrix_cache;   /* matrix used by this audio instance */
  46 };
  47
  48 struct _SwfdecAudioClass {
  49   GObjectClass          object_class;
  50
  51   gsize                 (* iterate)                     (SwfdecAudio *          audio,
  52                                                          gsize                  n_samples);
  53   gsize                 (* render)                      (SwfdecAudio *          audio,
  54                                                          gint16 *               dest,
  55                                                          gsize                  start,
  56                                                          gsize                  n_samples);
  57 };
  58
  59 void                    swfdec_audio_add                (SwfdecAudio *          audio,
  60                                                          SwfdecPlayer *         player);
  61 void                    swfdec_audio_remove             (SwfdecAudio *          audio);
  62 void                    swfdec_audio_set_actor          (SwfdecAudio *          audio,
  63                                                          SwfdecActor *          actor);
  64 void                    swfdec_audio_set_matrix         (SwfdecAudio *          audio,
  65                                                          const SwfdecSoundMatrix *matrix);
  66
  67 gsize                   swfdec_audio_iterate            (SwfdecAudio *          audio,
  68                                                          gsize                  n_samples);
  69 void                    swfdec_audio_update_matrix      (SwfdecAudio *          audio);
  70
  71 SwfdecAudioFormat       swfdec_audio_format_parse       (SwfdecBits *           bits);
  72 SwfdecAudioFormat       swfdec_audio_format_new         (guint                  rate,
  73                                                          guint                  channels,
  74                                                          gboolean               is_16bit);
  75 guint                   swfdec_audio_format_get_channels(SwfdecAudioFormat      format);
  76 gboolean                swfdec_audio_format_is_16bit    (SwfdecAudioFormat      format);
  77 guint                   swfdec_audio_format_get_rate    (SwfdecAudioFormat      format);
  78 guint                   swfdec_audio_format_get_granularity
  79                                                         (SwfdecAudioFormat      format);
  80 guint                   swfdec_audio_format_get_bytes_per_sample
  81                                                         (SwfdecAudioFormat      format);
  82 const char *            swfdec_audio_format_to_string   (SwfdecAudioFormat      format);
  83
  84
  85 G_END_DECLS
  86 #endif