1 /*****************************************************************************
2 * AudioOutput.cpp: BeOS audio output
3 *****************************************************************************
4 * Copyright (C) 1999, 2000, 2001 VideoLAN
5 * $Id: AudioOutput.cpp,v 1.30 2004/01/26 16:52:31 zorglub 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>
42 #include <aout_internal.h>
45 /*****************************************************************************
46 * aout_sys_t: BeOS audio output method descriptor
47 *****************************************************************************/
49 typedef struct aout_sys_t
51 BSoundPlayer * p_player;
56 /*****************************************************************************
58 *****************************************************************************/
59 static void Play ( void * p_aout, void * p_buffer, size_t size,
60 const media_raw_audio_format & format );
61 static void DoNothing ( aout_instance_t * p_aout );
63 /*****************************************************************************
65 *****************************************************************************/
66 int E_(OpenAudio) ( vlc_object_t * p_this )
68 aout_instance_t * p_aout = (aout_instance_t*) p_this;
69 p_aout->output.p_sys = (aout_sys_t*) malloc( sizeof( aout_sys_t ) );
70 if( p_aout->output.p_sys == NULL )
72 msg_Err( p_aout, "out of memory" );
75 aout_sys_t * p_sys = p_aout->output.p_sys;
77 aout_VolumeSoftInit( p_aout );
79 int i_nb_channels = aout_FormatNbChannels( &p_aout->output.output );
80 /* BSoundPlayer does not support more than 2 channels AFAIK */
81 if( i_nb_channels > 2 )
84 p_aout->output.output.i_physical_channels
85 = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
88 media_raw_audio_format * p_format;
89 p_format = (media_raw_audio_format*)
90 malloc( sizeof( media_raw_audio_format ) );
92 p_format->channel_count = i_nb_channels;
93 p_format->frame_rate = p_aout->output.output.i_rate;
94 p_format->format = media_raw_audio_format::B_AUDIO_FLOAT;
95 #ifdef WORDS_BIGENDIAN
96 p_format->byte_order = B_MEDIA_BIG_ENDIAN;
98 p_format->byte_order = B_MEDIA_LITTLE_ENDIAN;
100 p_format->buffer_size = 8192;
102 p_aout->output.output.i_format = VLC_FOURCC('f','l','3','2');
103 p_aout->output.i_nb_samples = 2048 / i_nb_channels;
104 p_aout->output.pf_play = DoNothing;
106 p_sys->p_player = new BSoundPlayer( p_format, "player", Play, NULL, p_aout );
107 if( p_sys->p_player->InitCheck() != B_OK )
109 msg_Err( p_aout, "BSoundPlayer InitCheck failed" );
110 delete p_sys->p_player;
116 p_sys->latency = p_sys->p_player->Latency();
117 p_sys->p_player->Start();
118 p_sys->p_player->SetHasData( true );
123 /*****************************************************************************
125 *****************************************************************************/
126 void E_(CloseAudio) ( vlc_object_t * p_this )
128 aout_instance_t * p_aout = (aout_instance_t *) p_this;
129 aout_sys_t * p_sys = (aout_sys_t *) p_aout->output.p_sys;
132 p_sys->p_player->Stop();
133 delete p_sys->p_player;
137 /*****************************************************************************
139 *****************************************************************************/
140 static void Play( void * _p_aout, void * _p_buffer, size_t i_size,
141 const media_raw_audio_format &format )
143 aout_instance_t * p_aout = (aout_instance_t*) _p_aout;
144 float * p_buffer = (float*) _p_buffer;
145 aout_sys_t * p_sys = (aout_sys_t*) p_aout->output.p_sys;
146 aout_buffer_t * p_aout_buffer;
148 p_aout_buffer = aout_OutputNextBuffer( p_aout,
149 mdate() + p_sys->latency,
152 if( p_aout_buffer != NULL )
154 p_aout->p_vlc->pf_memcpy( p_buffer, p_aout_buffer->p_buffer,
155 MIN( i_size, p_aout_buffer->i_nb_bytes ) );
156 if( p_aout_buffer->i_nb_bytes < i_size )
158 p_aout->p_vlc->pf_memset( p_buffer + p_aout_buffer->i_nb_bytes,
159 0, i_size - p_aout_buffer->i_nb_bytes );
161 aout_BufferFree( p_aout_buffer );
165 p_aout->p_vlc->pf_memset( p_buffer, 0, i_size );
169 /*****************************************************************************
171 *****************************************************************************/
172 static void DoNothing( aout_instance_t *p_aout )