+++ /dev/null
-/*****************************************************************************
- * portaudio.c : portaudio (v19) audio output plugin
- *****************************************************************************
- * Copyright (C) 2002, 2006 the VideoLAN team
- * $Id$
- *
- * Authors: Frederic Ruget <frederic.ruget@free.fr>
- * Gildas Bazin <gbazin@videolan.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
- *****************************************************************************/
-
-/*****************************************************************************
- * Preamble
- *****************************************************************************/
-
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
-
-#include <vlc_common.h>
-#include <vlc_plugin.h>
-#include <vlc_aout.h>
-
-
-#include <portaudio.h>
-
-#define FRAME_SIZE 1024 /* The size is in samples, not in bytes */
-
-#ifdef WIN32
-# define PORTAUDIO_IS_SERIOUSLY_BROKEN 1
-#endif
-
-/*****************************************************************************
- * aout_sys_t: portaudio audio output method descriptor
- *****************************************************************************/
-typedef struct
-{
- audio_output_t *p_aout;
-
- vlc_thread_t thread;
- vlc_cond_t wait;
- vlc_mutex_t lock_wait;
- bool b_wait;
- vlc_cond_t signal;
- vlc_mutex_t lock_signal;
- bool b_signal;
- bool b_error;
-
-} pa_thread_t;
-
-struct aout_sys_t
-{
- aout_packet_t packet;
- audio_output_t *p_aout;
- PaStream *p_stream;
-
- PaDeviceIndex i_devices;
- int i_sample_size;
- PaDeviceIndex i_device_id;
- const PaDeviceInfo *deviceInfo;
-
- bool b_chan_reorder; /* do we need channel reordering */
- int pi_chan_table[AOUT_CHAN_MAX];
- uint32_t i_channel_mask;
- uint32_t i_bits_per_sample;
- uint32_t i_channels;
-};
-
-static const uint32_t pi_channels_out[] =
- { AOUT_CHAN_LEFT, AOUT_CHAN_RIGHT,
- AOUT_CHAN_CENTER, AOUT_CHAN_LFE,
- AOUT_CHAN_REARLEFT, AOUT_CHAN_REARRIGHT, AOUT_CHAN_REARCENTER,
- AOUT_CHAN_MIDDLELEFT, AOUT_CHAN_MIDDLERIGHT, 0 };
-
-#ifdef PORTAUDIO_IS_SERIOUSLY_BROKEN
-static bool b_init = 0;
-static pa_thread_t *pa_thread;
-static void* PORTAUDIOThread( void * );
-#endif
-
-/*****************************************************************************
- * Local prototypes.
- *****************************************************************************/
-static int Open ( vlc_object_t * );
-static void Close ( vlc_object_t * );
-static void Play ( audio_output_t *, block_t * );
-
-static int PAOpenDevice( audio_output_t * );
-static int PAOpenStream( audio_output_t * );
-
-/*****************************************************************************
- * Module descriptor
- *****************************************************************************/
-#define DEVICE_TEXT N_("Output device")
-#define DEVICE_LONGTEXT N_("Portaudio identifier for the output device")
-
-vlc_module_begin ()
- set_shortname( "PortAudio" )
- set_description( N_("PORTAUDIO audio output") )
- set_category( CAT_AUDIO )
- set_subcategory( SUBCAT_AUDIO_AOUT )
- add_integer( "portaudio-audio-device", 0,
- DEVICE_TEXT, DEVICE_LONGTEXT, false )
- set_capability( "audio output", 0 )
- set_callbacks( Open, Close )
-vlc_module_end ()
-
-/* This routine will be called by the PortAudio engine when audio is needed.
- * It may called at interrupt level on some machines so don't do anything
- * that could mess up the system like calling malloc() or free().
- */
-static int paCallback( const void *inputBuffer, void *outputBuffer,
- unsigned long framesPerBuffer,
- const PaStreamCallbackTimeInfo *paDate,
- PaStreamCallbackFlags statusFlags, void *p_cookie )
-{
- VLC_UNUSED( inputBuffer ); VLC_UNUSED( statusFlags );
-
- struct aout_sys_t *p_sys = (struct aout_sys_t*) p_cookie;
- audio_output_t *p_aout = p_sys->p_aout;
- aout_buffer_t *p_buffer;
- mtime_t out_date;
-
- out_date = mdate() + (mtime_t) ( 1000000 *
- ( paDate->outputBufferDacTime - paDate->currentTime ) );
- p_buffer = aout_PacketNext( p_aout, out_date );
-
- if ( p_buffer != NULL )
- {
- if( p_sys->b_chan_reorder )
- {
- /* Do the channel reordering here */
- aout_ChannelReorder( p_buffer->p_buffer, p_buffer->i_buffer,
- p_sys->i_channels, p_sys->pi_chan_table,
- p_sys->i_bits_per_sample );
- }
- vlc_memcpy( outputBuffer, p_buffer->p_buffer,
- framesPerBuffer * p_sys->i_sample_size );
- aout_BufferFree( p_buffer );
- }
- else
- /* Audio output buffer shortage -> stop the fill process and wait */
- {
- vlc_memset( outputBuffer, 0, framesPerBuffer * p_sys->i_sample_size );
- }
- return 0;
-}
-
-/*****************************************************************************
- * Open: open the audio device
- *****************************************************************************/
-static int Open( vlc_object_t * p_this )
-{
- audio_output_t *p_aout = (audio_output_t *)p_this;
- struct aout_sys_t * p_sys;
-
- msg_Dbg( p_aout, "entering Open()");
-
- /* Allocate p_sys structure */
- p_sys = malloc( sizeof(aout_sys_t) );
- if( p_sys == NULL )
- return VLC_ENOMEM;
- p_sys->p_aout = p_aout;
- p_sys->p_stream = 0;
- p_aout->sys = p_sys;
- p_aout->pf_play = aout_PacketPlay;
- p_aout->pf_pause = aout_PacketPause;
- p_aout->pf_flush = aout_PacketFlush;
-
- /* Retrieve output device id from config */
- p_sys->i_device_id = var_CreateGetInteger( p_aout, "portaudio-audio-device" );
-
-#ifdef PORTAUDIO_IS_SERIOUSLY_BROKEN
- if( !b_init )
- {
- int i_err;
-
- /* Test device */
- if( PAOpenDevice( p_aout ) != VLC_SUCCESS )
- {
- msg_Err( p_aout, "cannot open portaudio device" );
- free( p_sys );
- return VLC_EGENERIC;
- }
-
- /* Close device for now. We'll re-open it later on */
- if( ( i_err = Pa_Terminate() ) != paNoError )
- {
- msg_Err( p_aout, "closing the device returned %d", i_err );
- }
-
- b_init = true;
-
- /* Now we need to setup our DirectSound play notification structure */
- pa_thread = calloc( 1, sizeof(*pa_thread) );
- pa_thread->p_aout = p_aout;
- pa_thread->b_error = false;
- vlc_mutex_init( &pa_thread->lock_wait );
- vlc_cond_init( &pa_thread->wait );
- pa_thread->b_wait = false;
- vlc_mutex_init( &pa_thread->lock_signal );
- vlc_cond_init( &pa_thread->signal );
- pa_thread->b_signal = false;
-
- /* Create PORTAUDIOThread */
- if( vlc_clone( &pa_thread->thread, PORTAUDIOThread, pa_thread,
- VLC_THREAD_PRIORITY_OUTPUT ) )
- {
- msg_Err( p_aout, "cannot create PORTAUDIO thread" );
- return VLC_EGENERIC;
- }
- }
- else
- {
- pa_thread->p_aout = p_aout;
- pa_thread->b_wait = false;
- pa_thread->b_signal = false;
- pa_thread->b_error = false;
- }
-
- /* Signal start of stream */
- vlc_mutex_lock( &pa_thread->lock_signal );
- pa_thread->b_signal = true;
- vlc_cond_signal( &pa_thread->signal );
- vlc_mutex_unlock( &pa_thread->lock_signal );
-
- /* Wait until thread is ready */
- vlc_mutex_lock( &pa_thread->lock_wait );
- while( !pa_thread->b_wait )
- vlc_cond_wait( &pa_thread->wait, &pa_thread->lock_wait );
- vlc_mutex_unlock( &pa_thread->lock_wait );
- pa_thread->b_wait = false;
-
- if( pa_thread->b_error )
- {
- msg_Err( p_aout, "PORTAUDIO thread failed" );
- Close( p_this );
- return VLC_EGENERIC;
- }
-
- return VLC_SUCCESS;
-
-#else
-
- if( PAOpenDevice( p_aout ) != VLC_SUCCESS )
- {
- msg_Err( p_aout, "cannot open portaudio device" );
- free( p_sys );
- return VLC_EGENERIC;
- }
-
- if( PAOpenStream( p_aout ) != VLC_SUCCESS )
- {
- msg_Err( p_aout, "cannot open portaudio device" );
- }
-
- return VLC_SUCCESS;
-
-#endif
-}
-
-/*****************************************************************************
- * Close: close the audio device
- *****************************************************************************/
-static void Close ( vlc_object_t *p_this )
-{
- audio_output_t *p_aout = (audio_output_t *)p_this;
- aout_sys_t *p_sys = p_aout->sys;
-
- msg_Dbg( p_aout, "closing portaudio");
-
-#ifdef PORTAUDIO_IS_SERIOUSLY_BROKEN
-
- /* Signal end of stream */
- vlc_mutex_lock( &pa_thread->lock_signal );
- pa_thread->b_signal = true;
- vlc_cond_signal( &pa_thread->signal );
- vlc_mutex_unlock( &pa_thread->lock_signal );
-
- /* Wait until thread is ready */
- vlc_mutex_lock( &pa_thread->lock_wait );
- while( !pa_thread->b_wait )
- vlc_cond_wait( &pa_thread->wait, &pa_thread->lock_wait );
- vlc_mutex_unlock( &pa_thread->lock_wait );
- pa_thread->b_wait = false;
-
-#else
-
- int i_err = Pa_StopStream( p_sys->p_stream );
- if( i_err != paNoError )
- {
- msg_Err( p_aout, "Pa_StopStream: %d (%s)", i_err,
- Pa_GetErrorText( i_err ) );
- }
- i_err = Pa_CloseStream( p_sys->p_stream );
- if( i_err != paNoError )
- {
- msg_Err( p_aout, "Pa_CloseStream: %d (%s)", i_err,
- Pa_GetErrorText( i_err ) );
- }
-
- i_err = Pa_Terminate();
- if( i_err != paNoError )
- {
- msg_Err( p_aout, "Pa_Terminate: %d (%s)", i_err,
- Pa_GetErrorText( i_err ) );
- }
-
-#endif
-
- msg_Dbg( p_aout, "portaudio closed");
- aout_PacketDestroy( p_aout );
- free( p_sys );
-}
-
-static int PAOpenDevice( audio_output_t *p_aout )
-{
- aout_sys_t *p_sys = p_aout->sys;
- const PaDeviceInfo *p_pdi;
- PaError i_err;
- vlc_value_t val, text;
- int i;
-
- /* Initialize portaudio */
- i_err = Pa_Initialize();
- if( i_err != paNoError )
- {
- msg_Err( p_aout, "Pa_Initialize returned %d : %s",
- i_err, Pa_GetErrorText( i_err ) );
-
- return VLC_EGENERIC;
- }
-
- p_sys->i_devices = Pa_GetDeviceCount();
- if( p_sys->i_devices < 0 )
- {
- i_err = p_sys->i_devices;
- msg_Err( p_aout, "Pa_GetDeviceCount returned %d : %s", i_err,
- Pa_GetErrorText( i_err ) );
-
- goto error;
- }
-
- /* Display all devices info */
- msg_Dbg( p_aout, "number of devices = %d", p_sys->i_devices );
- for( i = 0; i < p_sys->i_devices; i++ )
- {
- p_pdi = Pa_GetDeviceInfo( i );
- msg_Dbg( p_aout, "------------------------------------- #%d", i );
- msg_Dbg( p_aout, "Name = %s", p_pdi->name );
- msg_Dbg( p_aout, "Max Inputs = %d, Max Outputs = %d",
- p_pdi->maxInputChannels, p_pdi->maxOutputChannels );
- }
- msg_Dbg( p_aout, "-------------------------------------" );
-
- msg_Dbg( p_aout, "requested device is #%d", p_sys->i_device_id );
- if( p_sys->i_device_id >= p_sys->i_devices )
- {
- msg_Err( p_aout, "device %d does not exist", p_sys->i_device_id );
- goto error;
- }
- p_sys->deviceInfo = Pa_GetDeviceInfo( p_sys->i_device_id );
-
- if( p_sys->deviceInfo->maxOutputChannels < 1 )
- {
- msg_Err( p_aout, "no channel available" );
- goto error;
- }
-
- if( var_Type( p_aout, "audio-device" ) == 0 )
- {
- var_Create( p_aout, "audio-device", VLC_VAR_INTEGER|VLC_VAR_HASCHOICE);
- text.psz_string = _("Audio Device");
- var_Change( p_aout, "audio-device", VLC_VAR_SETTEXT, &text, NULL );
-
- if( p_sys->deviceInfo->maxOutputChannels >= 1 )
- {
- val.i_int = AOUT_VAR_MONO;
- text.psz_string = _("Mono");
- var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE,
- &val, &text );
- msg_Dbg( p_aout, "device supports 1 channel" );
- }
- if( p_sys->deviceInfo->maxOutputChannels >= 2 )
- {
- val.i_int = AOUT_VAR_STEREO;
- text.psz_string = _("Stereo");
- var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE,
- &val, &text );
- var_Change( p_aout, "audio-device", VLC_VAR_SETDEFAULT,
- &val, NULL );
- var_Set( p_aout, "audio-device", val );
- msg_Dbg( p_aout, "device supports 2 channels" );
- }
- if( p_sys->deviceInfo->maxOutputChannels >= 4 )
- {
- val.i_int = AOUT_VAR_2F2R;
- text.psz_string = _("2 Front 2 Rear");
- var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE,
- &val, &text );
- msg_Dbg( p_aout, "device supports 4 channels" );
- }
- if( p_sys->deviceInfo->maxOutputChannels >= 5 )
- {
- val.i_int = AOUT_VAR_3F2R;
- text.psz_string = _("3 Front 2 Rear");
- var_Change( p_aout, "audio-device",
- VLC_VAR_ADDCHOICE, &val, &text );
- msg_Dbg( p_aout, "device supports 5 channels" );
- }
- if( p_sys->deviceInfo->maxOutputChannels >= 6 )
- {
- val.i_int = AOUT_VAR_5_1;
- text.psz_string = _("5.1");
- var_Change( p_aout, "audio-device", VLC_VAR_ADDCHOICE,
- &val, &text );
- msg_Dbg( p_aout, "device supports 5.1 channels" );
- }
-
- var_AddCallback( p_aout, "audio-device", aout_ChannelsRestart, NULL );
- var_TriggerCallback( p_aout, "intf-change" );
- }
-
- /* Audio format is paFloat32 (always supported by portaudio v19) */
- p_aout->format.i_format = VLC_CODEC_FL32;
-
- return VLC_SUCCESS;
-
- error:
- if( ( i_err = Pa_Terminate() ) != paNoError )
- {
- msg_Err( p_aout, "Pa_Terminate returned %d", i_err );
- }
- return VLC_EGENERIC;
-}
-
-static int PAOpenStream( audio_output_t *p_aout )
-{
- aout_sys_t *p_sys = p_aout->sys;
- const PaHostErrorInfo* paLastHostErrorInfo = Pa_GetLastHostErrorInfo();
- PaStreamParameters paStreamParameters;
- vlc_value_t val;
- int i_channels, i_err;
- uint32_t i_channel_mask;
-
- if( var_Get( p_aout, "audio-device", &val ) < 0 )
- {
- return VLC_EGENERIC;
- }
-
- if( val.i_int == AOUT_VAR_5_1 )
- {
- p_aout->format.i_physical_channels
- = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
- | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT
- | AOUT_CHAN_LFE;
- }
- else if( val.i_int == AOUT_VAR_3F2R )
- {
- p_aout->format.i_physical_channels
- = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
- | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT;
- }
- else if( val.i_int == AOUT_VAR_2F2R )
- {
- p_aout->format.i_physical_channels
- = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT
- | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT;
- }
- else if( val.i_int == AOUT_VAR_MONO )
- {
- p_aout->format.i_physical_channels = AOUT_CHAN_CENTER;
- }
- else
- {
- p_aout->format.i_physical_channels
- = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
- }
-
- i_channels = aout_FormatNbChannels( &p_aout->format );
- msg_Dbg( p_aout, "nb_channels requested = %d", i_channels );
- i_channel_mask = p_aout->format.i_physical_channels;
-
- /* Calculate the frame size in bytes */
- p_sys->i_sample_size = 4 * i_channels;
- aout_FormatPrepare( &p_aout->format );
- aout_PacketInit( p_aout, &p_sys->packet, FRAME_SIZE );
- aout_VolumeSoftInit( p_aout );
-
- /* Check for channel reordering */
- p_aout->sys->i_channel_mask = i_channel_mask;
- p_aout->sys->i_bits_per_sample = 32; /* forced to paFloat32 */
- p_aout->sys->i_channels = i_channels;
-
- p_aout->sys->b_chan_reorder =
- aout_CheckChannelReorder( NULL, pi_channels_out,
- i_channel_mask, i_channels,
- p_aout->sys->pi_chan_table );
-
- if( p_aout->sys->b_chan_reorder )
- {
- msg_Dbg( p_aout, "channel reordering needed" );
- }
-
- paStreamParameters.device = p_sys->i_device_id;
- paStreamParameters.channelCount = i_channels;
- paStreamParameters.sampleFormat = paFloat32;
- paStreamParameters.suggestedLatency =
- p_sys->deviceInfo->defaultLowOutputLatency;
- paStreamParameters.hostApiSpecificStreamInfo = NULL;
-
- i_err = Pa_OpenStream( &p_sys->p_stream, NULL /* no input */,
- &paStreamParameters, (double)p_aout->format.i_rate,
- FRAME_SIZE, paClipOff, paCallback, p_sys );
- if( i_err != paNoError )
- {
- msg_Err( p_aout, "Pa_OpenStream returns %d : %s", i_err,
- Pa_GetErrorText( i_err ) );
- if( i_err == paUnanticipatedHostError )
- {
- msg_Err( p_aout, "type %d code %ld : %s",
- paLastHostErrorInfo->hostApiType,
- paLastHostErrorInfo->errorCode,
- paLastHostErrorInfo->errorText );
- }
- p_sys->p_stream = 0;
- aout_PacketDestroy( p_aout );
- return VLC_EGENERIC;
- }
-
- i_err = Pa_StartStream( p_sys->p_stream );
- if( i_err != paNoError )
- {
- msg_Err( p_aout, "Pa_StartStream() failed" );
- Pa_CloseStream( p_sys->p_stream );
- aout_PacketDestroy( p_aout );
- return VLC_EGENERIC;
- }
-
- return VLC_SUCCESS;
-}
-
-#ifdef PORTAUDIO_IS_SERIOUSLY_BROKEN
-/*****************************************************************************
- * PORTAUDIOThread: all interactions with libportaudio.a are handled
- * in this single thread. Otherwise libportaudio.a is _not_ happy :-(
- *****************************************************************************/
-static void* PORTAUDIOThread( void *data )
-{
- pa_thread_t *pa_thread = (pa_thread_t*)data;
- audio_output_t *p_aout;
- aout_sys_t *p_sys;
- int i_err;
- int canc = vlc_savecancel ();
-
- for( ;; )
- {
- /* Wait for start of stream */
- vlc_mutex_lock( &pa_thread->lock_signal );
- while( !pa_thread->b_signal )
- vlc_cond_wait( &pa_thread->signal, &pa_thread->lock_signal );
- vlc_mutex_unlock( &pa_thread->lock_signal );
- pa_thread->b_signal = false;
-
- p_aout = pa_thread->p_aout;
- p_sys = p_aout->sys;
-
- if( PAOpenDevice( p_aout ) != VLC_SUCCESS )
- {
- msg_Err( p_aout, "cannot open portaudio device" );
- pa_thread->b_error = true;
- }
-
- if( !pa_thread->b_error && PAOpenStream( p_aout ) != VLC_SUCCESS )
- {
- msg_Err( p_aout, "cannot open portaudio device" );
- pa_thread->b_error = true;
-
- i_err = Pa_Terminate();
- if( i_err != paNoError )
- {
- msg_Err( p_aout, "Pa_Terminate: %d (%s)", i_err,
- Pa_GetErrorText( i_err ) );
- }
- }
-
- /* Tell the main thread that we are ready */
- vlc_mutex_lock( &pa_thread->lock_wait );
- pa_thread->b_wait = true;
- vlc_cond_signal( &pa_thread->wait );
- vlc_mutex_unlock( &pa_thread->lock_wait );
-
- /* Wait for end of stream */
- vlc_mutex_lock( &pa_thread->lock_signal );
- while( !pa_thread->b_signal )
- vlc_cond_wait( &pa_thread->signal, &pa_thread->lock_signal );
- vlc_mutex_unlock( &pa_thread->lock_signal );
- pa_thread->b_signal = false;
-
- if( pa_thread->b_error ) continue;
-
- i_err = Pa_StopStream( p_sys->p_stream );
- if( i_err != paNoError )
- {
- msg_Err( p_aout, "Pa_StopStream: %d (%s)", i_err,
- Pa_GetErrorText( i_err ) );
- }
- i_err = Pa_CloseStream( p_sys->p_stream );
- if( i_err != paNoError )
- {
- msg_Err( p_aout, "Pa_CloseStream: %d (%s)", i_err,
- Pa_GetErrorText( i_err ) );
- }
- i_err = Pa_Terminate();
- if( i_err != paNoError )
- {
- msg_Err( p_aout, "Pa_Terminate: %d (%s)", i_err,
- Pa_GetErrorText( i_err ) );
- }
-
- /* Tell the main thread that we are ready */
- vlc_mutex_lock( &pa_thread->lock_wait );
- pa_thread->b_wait = true;
- vlc_cond_signal( &pa_thread->wait );
- vlc_mutex_unlock( &pa_thread->lock_wait );
- }
- vlc_restorecancel (canc);
- return NULL;
-}
-#endif
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