1 /*****************************************************************************
2 * AudioOutput.cpp: BeOS audio output
3 *****************************************************************************
4 * Copyright (C) 1999, 2000, 2001 the VideoLAN team
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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
24 *****************************************************************************/
26 /*****************************************************************************
28 *****************************************************************************/
31 #include <SoundPlayer.h>
32 #include <media/MediaDefs.h>
39 #include <vlc_common.h>
43 #include <aout_internal.h>
46 /*****************************************************************************
47 * aout_sys_t: BeOS audio output method descriptor
48 *****************************************************************************/
50 typedef struct aout_sys_t
52 BSoundPlayer * p_player;
57 /*****************************************************************************
59 *****************************************************************************/
60 static void Play ( void * p_aout, void * p_buffer, size_t size,
61 const media_raw_audio_format & format );
62 static void DoNothing ( aout_instance_t * p_aout );
64 /*****************************************************************************
66 *****************************************************************************/
67 int OpenAudio ( vlc_object_t * p_this )
69 aout_instance_t * p_aout = (aout_instance_t*) p_this;
70 p_aout->output.p_sys = (aout_sys_t*) malloc( sizeof( aout_sys_t ) );
71 if( p_aout->output.p_sys == NULL )
73 aout_sys_t * p_sys = p_aout->output.p_sys;
75 aout_VolumeSoftInit( p_aout );
77 int i_nb_channels = aout_FormatNbChannels( &p_aout->output.output );
78 /* BSoundPlayer does not support more than 2 channels AFAIK */
79 if( i_nb_channels > 2 )
82 p_aout->output.output.i_physical_channels
83 = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
86 media_raw_audio_format * p_format;
87 p_format = (media_raw_audio_format*)
88 malloc( sizeof( media_raw_audio_format ) );
90 p_format->channel_count = i_nb_channels;
91 p_format->frame_rate = p_aout->output.output.i_rate;
92 p_format->format = media_raw_audio_format::B_AUDIO_FLOAT;
93 #ifdef WORDS_BIGENDIAN
94 p_format->byte_order = B_MEDIA_BIG_ENDIAN;
96 p_format->byte_order = B_MEDIA_LITTLE_ENDIAN;
98 p_format->buffer_size = 8192;
100 p_aout->output.output.i_format = VLC_FOURCC('f','l','3','2');
101 p_aout->output.i_nb_samples = 2048 / i_nb_channels;
102 p_aout->output.pf_play = DoNothing;
104 p_sys->p_player = new BSoundPlayer( p_format, "player", Play, NULL, p_aout );
105 if( p_sys->p_player->InitCheck() != B_OK )
107 msg_Err( p_aout, "BSoundPlayer InitCheck failed" );
108 delete p_sys->p_player;
114 p_sys->latency = p_sys->p_player->Latency();
115 p_sys->p_player->Start();
116 p_sys->p_player->SetHasData( true );
121 /*****************************************************************************
123 *****************************************************************************/
124 void CloseAudio ( vlc_object_t * p_this )
126 aout_instance_t * p_aout = (aout_instance_t *) p_this;
127 aout_sys_t * p_sys = (aout_sys_t *) p_aout->output.p_sys;
130 p_sys->p_player->Stop();
131 delete p_sys->p_player;
135 /*****************************************************************************
137 *****************************************************************************/
138 static void Play( void * _p_aout, void * _p_buffer, size_t i_size,
139 const media_raw_audio_format &format )
141 aout_instance_t * p_aout = (aout_instance_t*) _p_aout;
142 float * p_buffer = (float*) _p_buffer;
143 aout_sys_t * p_sys = (aout_sys_t*) p_aout->output.p_sys;
144 aout_buffer_t * p_aout_buffer;
146 p_aout_buffer = aout_OutputNextBuffer( p_aout,
147 mdate() + p_sys->latency,
150 if( p_aout_buffer != NULL )
152 vlc_memcpy( p_buffer, p_aout_buffer->p_buffer,
153 MIN( i_size, p_aout_buffer->i_nb_bytes ) );
154 if( p_aout_buffer->i_nb_bytes < i_size )
156 vlc_memset( p_buffer + p_aout_buffer->i_nb_bytes,
157 0, i_size - p_aout_buffer->i_nb_bytes );
159 aout_BufferFree( p_aout_buffer );
163 vlc_memset( p_buffer, 0, i_size );
167 /*****************************************************************************
169 *****************************************************************************/
170 static void DoNothing( aout_instance_t *p_aout )