1 /*****************************************************************************
2 * hd1000a.cpp : Roku HD1000 audio output
3 *****************************************************************************
4 * Copyright (C) 2004 VideoLAN
7 * Author: Jon Lech Johansen <jon-vl@nanocrew.net>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
36 #include "aout_internal.h"
39 #include <deschutes/libraries/hdmachinex225/PCMAudioPlayer.h>
41 #define FRAME_SIZE 4096
43 /*****************************************************************************
44 * aout_sys_t: audio output method descriptor
45 *****************************************************************************
46 * This structure is part of the audio output thread descriptor.
47 * It describes the direct sound specific properties of an audio device.
48 *****************************************************************************/
57 PCMAudioPlayer * pPlayer;
60 /*****************************************************************************
62 *****************************************************************************/
63 static int Open ( vlc_object_t * );
64 static void Close ( vlc_object_t * );
66 static void Play ( aout_instance_t * );
67 static int Thread ( aout_instance_t * );
69 /*****************************************************************************
71 *****************************************************************************/
73 set_description( N_("HD1000 audio output") );
74 set_capability( "audio output", 100 );
75 set_callbacks( Open, Close );
78 /*****************************************************************************
79 * Open: open a dummy audio device
80 *****************************************************************************/
81 static int Open( vlc_object_t * p_this )
83 aout_instance_t * p_aout = (aout_instance_t *)p_this;
84 struct aout_sys_t * p_sys;
85 PCMAudioPlayer * pPlayer;
88 /* Allocate structure */
89 p_aout->output.p_sys = p_sys =
90 (aout_sys_t *)malloc( sizeof( aout_sys_t ) );
91 if( p_aout->output.p_sys == NULL )
93 msg_Err( p_aout, "out of memory" );
97 /* New PCMAudioPlayer */
98 p_sys->pPlayer = pPlayer = new PCMAudioPlayer();
99 if( p_sys->pPlayer == NULL )
101 msg_Err( p_aout, "out of memory" );
106 /* Get Buffer Requirements */
107 if( !pPlayer->GetBufferRequirements( p_sys->nAlignment,
108 p_sys->nSizeMultiple,
111 msg_Err( p_aout, "GetBufferRequirements failed" );
117 p_sys->nBuffers = __MIN( p_sys->nBuffers, 4 );
119 p_sys->ppBuffers = (void **)malloc( p_sys->nBuffers * sizeof( void * ) );
120 if( p_sys->ppBuffers == NULL )
122 msg_Err( p_aout, "out of memory" );
128 /* Open PCMAudioPlayer */
129 p_sys->nBufferSize = FRAME_SIZE * 4;
130 if( !pPlayer->Open( p_sys->nBuffers, p_sys->nBufferSize,
133 msg_Err( p_aout, "Open failed" );
135 free( p_sys->ppBuffers );
140 p_sys->nNextBufferIndex = 0;
142 if( !pPlayer->SetSampleRate( p_aout->output.output.i_rate ) )
144 p_aout->output.output.i_rate = 44100;
145 if( !pPlayer->SetSampleRate( p_aout->output.output.i_rate ) )
147 msg_Err( p_aout, "SetSampleRate failed" );
150 free( p_sys->ppBuffers );
156 p_aout->output.output.i_format = AOUT_FMT_S16_NE;
157 p_aout->output.i_nb_samples = FRAME_SIZE;
158 p_aout->output.output.i_physical_channels
159 = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
160 p_aout->output.pf_play = Play;
161 aout_VolumeSoftInit( p_aout );
163 i_volume = config_GetInt( p_aout->p_vlc, "volume" );
164 pPlayer->SetVolume( (u32)__MIN( i_volume * 64, 0xFFFF ) );
166 /* Create thread and wait for its readiness. */
167 if( vlc_thread_create( p_aout, "aout", Thread,
168 VLC_THREAD_PRIORITY_OUTPUT, VLC_FALSE ) )
170 msg_Err( p_aout, "cannot create OSS thread (%s)", strerror(errno) );
173 free( p_sys->ppBuffers );
181 /*****************************************************************************
182 * Close: close our file
183 *****************************************************************************/
184 static void Close( vlc_object_t * p_this )
187 aout_instance_t * p_aout = (aout_instance_t *)p_this;
188 struct aout_sys_t * p_sys = p_aout->output.p_sys;
190 p_aout->b_die = VLC_TRUE;
191 vlc_thread_join( p_aout );
192 p_aout->b_die = VLC_FALSE;
196 i = p_sys->pPlayer->WaitForBuffer();
197 } while( i != 0 && i != p_sys->nBuffers );
199 p_sys->pPlayer->Close();
200 delete p_sys->pPlayer;
202 free( p_sys->ppBuffers );
206 /*****************************************************************************
208 *****************************************************************************/
209 static void Play( aout_instance_t * p_aout )
213 /*****************************************************************************
214 * Thread: thread used to DMA the data to the device
215 *****************************************************************************/
216 static int Thread( aout_instance_t * p_aout )
218 aout_buffer_t * p_buffer;
219 struct aout_sys_t * p_sys = p_aout->output.p_sys;
220 PCMAudioPlayer * pPlayer = p_sys->pPlayer;
222 while( !p_aout->b_die )
224 pPlayer->WaitForBuffer();
226 vlc_mutex_lock( &p_aout->output_fifo_lock );
227 p_buffer = aout_FifoPop( p_aout, &p_aout->output.fifo );
228 vlc_mutex_unlock( &p_aout->output_fifo_lock );
230 #define i p_sys->nNextBufferIndex
231 if( p_buffer == NULL )
233 p_aout->p_vlc->pf_memset( p_sys->ppBuffers[ i ], 0,
234 p_sys->nBufferSize );
238 p_aout->p_vlc->pf_memcpy( p_sys->ppBuffers[ i ],
240 p_sys->nBufferSize );
241 aout_BufferFree( p_buffer );
244 if( !pPlayer->QueueBuffer( (s16 *)p_sys->ppBuffers[ i ],
245 p_sys->nBufferSize / 2 ) )
247 msg_Err( p_aout, "QueueBuffer failed" );
250 i = (i + 1) % p_sys->nBuffers;