1 /*****************************************************************************
2 * aout.cpp: BeOS audio output
3 *****************************************************************************
4 * Copyright (C) 1999, 2000, 2001 VideoLAN
5 * $Id: AudioOutput.cpp,v 1.16 2002/11/22 19:37:25 titer Exp $
7 * Authors: Jean-Marc Dressler <polux@via.ecp.fr>
8 * Samuel Hocevar <sam@zoy.org>
9 * Eric Petit <titer@videolan.org>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
24 *****************************************************************************/
26 /*****************************************************************************
28 *****************************************************************************/
30 #include <stdlib.h> /* malloc(), free() */
34 #include <SoundPlayer.h>
35 #include <media/MediaDefs.h>
39 #include <aout_internal.h>
41 #define FRAME_SIZE 2048
43 /*****************************************************************************
44 * aout_sys_t: BeOS audio output method descriptor
45 *****************************************************************************/
47 typedef struct aout_sys_t
49 BSoundPlayer *p_player;
53 /*****************************************************************************
55 *****************************************************************************/
56 static void Play ( void *p_aout, void *p_buffer, size_t size,
57 const media_raw_audio_format &format );
58 static void DoNothing ( aout_instance_t *p_aout );
60 /*****************************************************************************
62 *****************************************************************************/
63 int E_(OpenAudio) ( vlc_object_t * p_this )
66 aout_instance_t *p_aout = (aout_instance_t*) p_this;
67 p_aout->output.p_sys = (aout_sys_t *) malloc( sizeof( aout_sys_t ) );
69 aout_sys_t *p_sys = p_aout->output.p_sys;
71 aout_VolumeSoftInit( p_aout );
73 media_raw_audio_format *p_format;
74 p_format = (media_raw_audio_format*)
75 malloc( sizeof( media_raw_audio_format ) );
77 p_format->frame_rate = p_aout->output.output.i_rate;
79 i_nb_channels = aout_FormatNbChannels( &p_aout->output.output );
80 if ( i_nb_channels > 2 )
82 /* BSoundPlayer does not support more than 2 channels AFAIK */
84 p_aout->output.output.i_physical_channels
85 = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
87 p_format->channel_count = i_nb_channels;
89 p_format->format = media_raw_audio_format::B_AUDIO_FLOAT;
90 #ifdef WORDS_BIGENDIAN
91 p_format->byte_order = B_MEDIA_BIG_ENDIAN;
93 p_format->byte_order = B_MEDIA_LITTLE_ENDIAN;
95 p_aout->output.output.i_format = VLC_FOURCC('f','l','3','2');
97 p_format->buffer_size = 16384;
98 p_aout->output.i_nb_samples = FRAME_SIZE;
99 p_aout->output.pf_play = DoNothing;
101 p_sys->p_player = new BSoundPlayer( p_format, "player",
102 Play, NULL, p_this );
103 p_sys->p_player->Start();
104 p_sys->p_player->SetHasData( true );
109 /*****************************************************************************
111 *****************************************************************************/
112 void E_(CloseAudio) ( vlc_object_t *p_this )
114 aout_instance_t * p_aout = (aout_instance_t *) p_this;
115 aout_sys_t * p_sys = (aout_sys_t *) p_aout->output.p_sys;
117 p_sys->p_player->Stop();
118 delete p_sys->p_player;
122 /*****************************************************************************
124 *****************************************************************************/
125 static void Play( void *aout, void *buffer, size_t size,
126 const media_raw_audio_format &format )
128 aout_buffer_t * p_aout_buffer;
129 aout_instance_t *p_aout = (aout_instance_t*) aout;
131 float *p_buffer = (float*) buffer;
133 p_aout_buffer = aout_FifoPop( p_aout, &p_aout->output.fifo );
135 if( p_aout_buffer != NULL )
138 p_aout_buffer->p_buffer,
139 MIN( size, p_aout_buffer->i_nb_bytes ) );
140 aout_BufferFree( p_aout_buffer );
144 /*****************************************************************************
146 *****************************************************************************/
147 static void DoNothing( aout_instance_t *p_aout)