--- /dev/null
+/*****************************************************************************
+ * portaudio.c : portaudio audio output plugin
+ *****************************************************************************
+ * Copyright (C) 2002 VideoLAN
+ * $Id$
+ *
+ * Authors: Frederic Ruget <frederic.ruget@free.fr>
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
+ *****************************************************************************/
+
+/*****************************************************************************
+ * Preamble
+ *****************************************************************************/
+#include <string.h>
+#include <stdlib.h>
+
+#include <vlc/vlc.h>
+#include <vlc/aout.h>
+#include <portaudio.h>
+
+#include "aout_internal.h"
+
+#define FRAME_SIZE 1024 /* The size is in samples, not in bytes */
+#define FRAMES_NUM 8
+
+/*****************************************************************************
+ * aout_sys_t: portaudio audio output method descriptor
+ *****************************************************************************/
+struct aout_sys_t
+{
+ aout_instance_t *p_aout;
+ PortAudioStream *p_stream;
+ int i_numDevices;
+ int i_nbChannels;
+ PaSampleFormat sampleFormat;
+ int i_sampleSize;
+ PaDeviceID i_deviceId;
+ PaDeviceInfo deviceInfo;
+};
+
+/*****************************************************************************
+ * Local prototypes.
+ *****************************************************************************/
+static int Open ( vlc_object_t * );
+static void Close ( vlc_object_t * );
+static void Play ( aout_instance_t * );
+static int i_once = 0;
+
+/*****************************************************************************
+ * Module descriptor
+ *****************************************************************************/
+#define DEVICE_TEXT N_("Output device")
+#define DEVICE_LONGTEXT N_("Portaudio identifier for the output device")
+
+vlc_module_begin();
+ set_description( N_("PORTAUDIO audio output") );
+ add_integer( "portaudio-device", 0, NULL,
+ DEVICE_TEXT, DEVICE_LONGTEXT, VLC_FALSE );
+ set_capability( "audio output", 40 );
+ 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( void *inputBuffer, void *outputBuffer,
+ unsigned long framesPerBuffer,
+ PaTimestamp outTime, void *p_cookie )
+{
+ struct aout_sys_t* p_sys = (struct aout_sys_t*) p_cookie;
+ aout_instance_t * p_aout = p_sys->p_aout;
+ aout_buffer_t * p_buffer;
+
+ vlc_mutex_lock( &p_aout->output_fifo_lock );
+ p_buffer = aout_FifoPop( p_aout, &p_aout->output.fifo );
+ vlc_mutex_unlock( &p_aout->output_fifo_lock );
+
+ if ( p_buffer != NULL )
+ {
+ p_aout->p_vlc->pf_memcpy( outputBuffer, p_buffer->p_buffer,
+ framesPerBuffer * p_sys->i_sampleSize );
+ aout_BufferFree( p_buffer );
+ }
+ else
+ {
+ p_aout->p_vlc->pf_memset( outputBuffer, 0,
+ framesPerBuffer * p_sys->i_sampleSize );
+ }
+ return 0;
+}
+
+/*****************************************************************************
+ * Open: open the audio device
+ *****************************************************************************/
+static int Open ( vlc_object_t * p_this )
+{
+ aout_instance_t *p_aout = (aout_instance_t *)p_this;
+ struct aout_sys_t * p_sys;
+ PortAudioStream *p_stream;
+ vlc_value_t val;
+ PaError i_err;
+ int i_nb_channels;
+ const PaDeviceInfo *p_pdi;
+ int i, j;
+
+ msg_Dbg( p_aout, "Entering Open()");
+
+ /* Allocate p_sys structure */
+ p_sys = (struct aout_sys_t*) malloc( sizeof( aout_sys_t ) );
+ if( p_sys == NULL )
+ {
+ msg_Err( p_aout, "out of memory" );
+ return VLC_ENOMEM;
+ }
+ p_sys->p_aout = p_aout;
+ p_aout->output.p_sys = p_sys;
+
+ /* Output device id */
+ var_Create( p_this, "portaudio-device",
+ VLC_VAR_INTEGER|VLC_VAR_DOINHERIT );
+ var_Get( p_this, "portaudio-device", &val );
+ p_sys->i_deviceId = val.i_int;
+
+ if (! i_once)
+ {
+ i_once = 1;
+ 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_numDevices = Pa_CountDevices();
+ if( p_sys->i_numDevices < 0 )
+ {
+ i_err = p_sys->i_numDevices;
+ msg_Err( p_aout, "Pa_CountDevices returned %d : %s", i_err, Pa_GetErrorText( i_err ));
+ (void) Pa_Terminate();
+ return VLC_EGENERIC;
+ }
+ msg_Info( p_aout, "Number of devices = %d", p_sys->i_numDevices );
+ if ( p_sys->i_deviceId >= p_sys->i_numDevices )
+ {
+ msg_Err( p_aout, "Device %d does not exist", p_sys->i_deviceId );
+ (void) Pa_Terminate();
+ return VLC_EGENERIC;
+ }
+ for( i = 0; i < p_sys->i_numDevices; i++ )
+ {
+ p_pdi = Pa_GetDeviceInfo( i );
+ if ( i == p_sys->i_deviceId )
+ {
+ p_sys->deviceInfo = *p_pdi;
+ }
+ msg_Info( p_aout, "---------------------------------------------- #%d", i );
+ msg_Info( p_aout, "Name = %s", p_pdi->name );
+ msg_Info( p_aout, "Max Inputs = %d, Max Outputs = %d",
+ p_pdi->maxInputChannels, p_pdi->maxOutputChannels );
+ if( p_pdi->numSampleRates == -1 )
+ {
+ msg_Info( p_aout, "Sample Rate Range = %f to %f", p_pdi->sampleRates[0], p_pdi->sampleRates[1] );
+ }
+ else
+ {
+ msg_Info( p_aout, "Sample Rates =");
+ for( j = 0; j < p_pdi->numSampleRates; j++ )
+ {
+ msg_Info( p_aout, " %8.2f,", p_pdi->sampleRates[j] );
+ }
+ }
+ msg_Info( p_aout, "Native Sample Formats = ");
+ if( p_pdi->nativeSampleFormats & paInt8 ) msg_Info( p_aout, "paInt8");
+ if( p_pdi->nativeSampleFormats & paUInt8 ) msg_Info( p_aout, "paUInt8");
+ if( p_pdi->nativeSampleFormats & paInt16 ) msg_Info( p_aout, "paInt16");
+ if( p_pdi->nativeSampleFormats & paInt32 ) msg_Info( p_aout, "paInt32");
+ if( p_pdi->nativeSampleFormats & paFloat32 ) msg_Info( p_aout, "paFloat32");
+ if( p_pdi->nativeSampleFormats & paInt24 ) msg_Info( p_aout, "paInt24");
+ if( p_pdi->nativeSampleFormats & paPackedInt24 ) msg_Info( p_aout, "paPackedInt24");
+ }
+
+ msg_Info( p_aout, "----------------------------------------------");
+
+
+ /*
+portaudio warning: Number of devices = 3
+portaudio warning: ---------------------------------------------- #0 DefaultInput DefaultOutput
+portaudio warning: Name = PORTAUDIO DirectX Full Duplex Driver
+portaudio warning: Max Inputs = 2, Max Outputs = 2
+portaudio warning: Sample Rates =
+portaudio warning: 11025.00,
+portaudio warning: 22050.00,
+portaudio warning: 32000.00,
+portaudio warning: 44100.00,
+portaudio warning: 48000.00,
+portaudio warning: 88200.00,
+portaudio warning: 96000.00,
+portaudio warning: Native Sample Formats =
+portaudio warning: paInt16
+portaudio warning: ---------------------------------------------- #1
+portaudio warning: Name = PORTAUDIO Multimedia Driver
+portaudio warning: Max Inputs = 2, Max Outputs = 2
+portaudio warning: Sample Rates =
+portaudio warning: 11025.00,
+portaudio warning: 22050.00,
+portaudio warning: 32000.00,
+portaudio warning: 44100.00,
+portaudio warning: 48000.00,
+portaudio warning: 88200.00,
+portaudio warning: 96000.00,
+portaudio warning: Native Sample Formats =
+portaudio warning: paInt16
+portaudio warning: ---------------------------------------------- #2
+portaudio warning: Name = E-MU PORTAUDIO
+portaudio warning: Max Inputs = 0, Max Outputs = 4
+portaudio warning: Sample Rates =
+portaudio warning: 44100.00,
+portaudio warning: 48000.00,
+portaudio warning: 96000.00,
+portaudio warning: Native Sample Formats =
+portaudio warning: paInt16
+portaudio warning: ----------------------------------------------
+ */
+
+ p_aout->output.pf_play = Play;
+ aout_VolumeSoftInit( p_aout );
+
+ /* select audio format */
+ if( p_sys->deviceInfo.nativeSampleFormats & paFloat32 )
+ {
+ p_sys->sampleFormat = paFloat32;
+ p_aout->output.output.i_format = VLC_FOURCC('f','l','3','2');
+ p_sys->i_sampleSize = 4;
+ }
+ else if( p_sys->deviceInfo.nativeSampleFormats & paInt16 )
+ {
+ p_sys->sampleFormat = paInt16;
+ p_aout->output.output.i_format = AOUT_FMT_S16_NE;
+ p_sys->i_sampleSize = 2;
+ }
+ else
+ {
+ msg_Err( p_aout, "Audio format not supported" );
+ (void) Pa_Terminate();
+ return VLC_EGENERIC;
+ }
+
+ i_nb_channels = aout_FormatNbChannels( &p_aout->output.output );
+ msg_Info( p_aout, "nb_channels = %d", i_nb_channels );
+ if ( i_nb_channels > p_sys->deviceInfo.maxOutputChannels )
+ {
+ if ( p_sys->deviceInfo.maxOutputChannels < 1 )
+ {
+ msg_Err( p_aout, "No channel available" );
+ (void) Pa_Terminate();
+ return VLC_EGENERIC;
+ }
+ else if ( p_sys->deviceInfo.maxOutputChannels < 2 )
+ {
+ p_sys->i_nbChannels = 1;
+ p_aout->output.output.i_physical_channels
+ = AOUT_CHAN_CENTER;
+ }
+ else if ( p_sys->deviceInfo.maxOutputChannels < 4 )
+ {
+ p_sys->i_nbChannels = 2;
+ p_aout->output.output.i_physical_channels
+ = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
+ }
+ else if ( p_sys->deviceInfo.maxOutputChannels < 6 )
+ {
+ p_sys->i_nbChannels = 4;
+ p_aout->output.output.i_physical_channels
+ = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT
+ | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT;
+ }
+ else
+ {
+ p_sys->i_nbChannels = 6;
+ p_aout->output.output.i_physical_channels
+ = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
+ | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT
+ | AOUT_CHAN_LFE;
+ }
+ }
+ p_sys->i_sampleSize *= p_sys->i_nbChannels;
+
+ /* Open portaudio stream */
+ p_aout->output.i_nb_samples = FRAME_SIZE;
+ msg_Info( p_aout, "rate = %d", p_aout->output.output.i_rate );
+ msg_Info( p_aout, "samples = %d", p_aout->output.i_nb_samples );
+
+ i_err = Pa_OpenStream(
+ &p_stream,
+ paNoDevice, 0, 0, 0, /* no input device */
+ p_sys->i_deviceId, /* output device */
+ p_sys->i_nbChannels,
+ p_sys->sampleFormat,
+ NULL,
+ (double) p_aout->output.output.i_rate,
+ (unsigned long) p_aout->output.i_nb_samples, /* FRAMES_PER_BUFFER */
+ FRAMES_NUM, /* number of buffers, if zero then use default minimum */
+ paClipOff, /* we won't output out of range samples so don't bother clipping them */
+ paCallback, p_sys );
+ if( i_err != paNoError )
+ {
+ msg_Err( p_aout, "Pa_OpenStream returns %d : %s", i_err,
+ Pa_GetErrorText( i_err ) );
+ (void) Pa_Terminate();
+ return VLC_EGENERIC;
+ }
+
+ p_sys->p_stream = p_stream;
+ i_err = Pa_StartStream( p_stream );
+ if( i_err != paNoError )
+ {
+ (void) Pa_CloseStream( p_stream);
+ (void) Pa_Terminate();
+ return VLC_EGENERIC;
+ }
+
+ msg_Dbg( p_aout, "Leaving Open()" );
+ return VLC_SUCCESS;
+}
+
+/*****************************************************************************
+ * Close: close the audio device
+ *****************************************************************************/
+static void Close ( vlc_object_t *p_this )
+{
+ aout_instance_t *p_aout = (aout_instance_t *)p_this;
+ struct aout_sys_t * p_sys = p_aout->output.p_sys;
+ PortAudioStream *p_stream = p_sys->p_stream;
+ PaError i_err;
+
+ msg_Dbg( p_aout, "Entering Close()");
+
+ i_err = Pa_AbortStream( p_stream );
+ if ( i_err != paNoError )
+ {
+ msg_Err( p_aout, "Pa_AbortStream: %d (%s)", i_err, Pa_GetErrorText( i_err ) );
+ }
+ i_err = Pa_CloseStream( 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 ) );
+ }
+ msg_Dbg( p_aout, "Leaving Close()");
+}
+
+/*****************************************************************************
+ * Play: play sound
+ *****************************************************************************/
+static void Play( aout_instance_t * p_aout )
+{
+}
projects / vlc / commitdiff