spatializer.cpp
资源名称:vlc-1.0.5.zip [点击查看]
上传用户:kjfoods
上传日期:2020-07-06
资源大小:29949k
文件大小:12k
源码类别:
midi
开发平台:
Unix_Linux
- /*****************************************************************************
- * spatializer.cpp: sound reverberation
- *****************************************************************************
- * Copyright (C) 2004, 2006, 2007 the VideoLAN team
- *
- * Google Summer of Code 2007
- *
- * Authors: Biodun Osunkunle <biodun@videolan.org>
- *
- * Mentor : Jean-Baptiste Kempf <jb@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
- *****************************************************************************/
- #include <stdlib.h> /* malloc(), free() */
- #include <math.h>
- #ifdef HAVE_CONFIG_H
- # include "config.h"
- #endif
- #include <vlc_common.h>
- #include <vlc_plugin.h>
- #include "vlc_aout.h"
- #include "revmodel.hpp"
- #define SPAT_AMP 0.3
- /*****************************************************************************
- * Module descriptor
- *****************************************************************************/
- static int Open ( vlc_object_t * );
- static void Close( vlc_object_t * );
- #define ROOMSIZE_TEXT N_("Room size")
- #define ROOMSIZE_LONGTEXT N_("Defines the virtual surface of the room"
- "emulated by the filter." )
- #define WIDTH_TEXT N_("Room width")
- #define WIDTH_LONGTEXT N_("Width of the virtual room")
- #define WET_TEXT N_("Wet")
- #define WET_LONGTEXT NULL
- #define DRY_TEXT N_("Dry")
- #define DRY_LONGTEXT NULL
- #define DAMP_TEXT N_("Damp")
- #define DAMP_LONGTEXT NULL
- vlc_module_begin ()
- set_description( N_("Audio Spatializer") )
- set_shortname( N_("Spatializer" ) )
- set_capability( "audio filter", 0 )
- set_category( CAT_AUDIO )
- set_subcategory( SUBCAT_AUDIO_AFILTER )
- set_callbacks( Open, Close )
- add_shortcut( "spatializer" )
- add_float( "spatializer-roomsize", 1.05, NULL, ROOMSIZE_TEXT,
- ROOMSIZE_LONGTEXT, true )
- add_float( "spatializer-width", 10., NULL, WIDTH_TEXT,WIDTH_LONGTEXT, true )
- add_float( "spatializer-wet", 3., NULL, WET_TEXT,WET_LONGTEXT, true )
- add_float( "spatializer-dry", 2., NULL, DRY_TEXT,DRY_LONGTEXT, true )
- add_float( "spatializer-damp", 1., NULL, DAMP_TEXT,DAMP_LONGTEXT, true )
- vlc_module_end ()
- /*****************************************************************************
- * Local prototypes
- *****************************************************************************/
- struct aout_filter_sys_t
- {
- vlc_mutex_t lock;
- revmodel *p_reverbm;
- };
- class CLocker
- {
- public:
- CLocker( vlc_mutex_t *p_lock ) : p_lock(p_lock) {
- vlc_mutex_lock( p_lock );
- }
- virtual ~CLocker() {
- vlc_mutex_unlock( p_lock );
- }
- private:
- vlc_mutex_t *p_lock;
- };
- static const char *psz_control_names[] =
- {
- "spatializer-roomsize", "spatializer-width" ,
- "spatializer-wet", "spatializer-dry", "spatializer-damp"
- };
- static void DoWork( aout_instance_t *, aout_filter_t *,
- aout_buffer_t *, aout_buffer_t * );
- static int SpatInit( aout_filter_t *);
- static void SpatFilter( aout_instance_t *,aout_filter_t *, float *, float *,
- int, int );
- static void SpatClean( aout_filter_t * );
- static int RoomCallback ( vlc_object_t *, char const *,
- vlc_value_t, vlc_value_t, void * );
- static int WetCallback ( vlc_object_t *, char const *,
- vlc_value_t, vlc_value_t, void * );
- static int DryCallback ( vlc_object_t *, char const *,
- vlc_value_t, vlc_value_t, void * );
- static int DampCallback ( vlc_object_t *, char const *,
- vlc_value_t, vlc_value_t, void * );
- static int WidthCallback ( vlc_object_t *, char const *,
- vlc_value_t, vlc_value_t, void * );
- /*****************************************************************************
- * Open:
- *****************************************************************************/
- static int Open( vlc_object_t *p_this )
- {
- aout_filter_t *p_filter = (aout_filter_t *)p_this;
- aout_filter_sys_t *p_sys;
- bool b_fit = true;
- msg_Dbg(p_this, "Opening filter spatializer %s %s %d", __FILE__,__func__,__LINE__);
- if( p_filter->input.i_format != VLC_FOURCC('f','l','3','2' ) ||
- p_filter->output.i_format != VLC_FOURCC('f','l','3','2') )
- {
- b_fit = false;
- p_filter->input.i_format = VLC_FOURCC('f','l','3','2');
- p_filter->output.i_format = VLC_FOURCC('f','l','3','2');
- msg_Warn( p_filter, "bad input or output format" );
- }
- if ( !AOUT_FMTS_SIMILAR( &p_filter->input, &p_filter->output ) )
- {
- b_fit = false;
- memcpy( &p_filter->output, &p_filter->input,
- sizeof(audio_sample_format_t) );
- msg_Warn( p_filter, "input and output formats are not similar" );
- }
- if ( ! b_fit )
- {
- return VLC_EGENERIC;
- }
- p_filter->pf_do_work = DoWork;
- p_filter->b_in_place = true;
- /* Allocate structure */
- p_sys = p_filter->p_sys = (aout_filter_sys_t*)malloc( sizeof( aout_filter_sys_t ) );
- if( !p_sys )
- return VLC_ENOMEM;
- vlc_mutex_init( &p_sys->lock );
- p_sys->p_reverbm = new revmodel();
- p_sys->p_reverbm->setroomsize(1.05);
- p_sys->p_reverbm->setwet(10.0f);
- p_sys->p_reverbm->setdry(1.0f);
- p_sys->p_reverbm->setdamp(0.3);
- p_sys->p_reverbm->setwidth(0.9);
- SpatInit( p_filter);
- return VLC_SUCCESS;
- }
- /*****************************************************************************
- * Close: close the plugin
- *****************************************************************************/
- static void Close( vlc_object_t *p_this )
- {
- aout_filter_t *p_filter = (aout_filter_t *)p_this;
- aout_filter_sys_t *p_sys = p_filter->p_sys;
- SpatClean( p_filter );
- delete p_sys->p_reverbm;
- vlc_mutex_destroy( &p_sys->lock );
- free( p_sys );
- msg_Dbg(p_this, "Closing filter spatializer %s %s %d", __FILE__,__func__,__LINE__);
- }
- /*****************************************************************************
- * DoWork: process samples buffer
- *****************************************************************************/
- static void DoWork( aout_instance_t * p_aout, aout_filter_t * p_filter,
- aout_buffer_t * p_in_buf, aout_buffer_t * p_out_buf )
- {
- p_out_buf->i_nb_samples = p_in_buf->i_nb_samples;
- p_out_buf->i_nb_bytes = p_in_buf->i_nb_bytes;
- SpatFilter( p_aout, p_filter, (float*)p_out_buf->p_buffer,
- (float*)p_in_buf->p_buffer, p_in_buf->i_nb_samples,
- aout_FormatNbChannels( &p_filter->input ) );
- }
- static int SpatInit( aout_filter_t *p_filter )
- {
- aout_filter_sys_t *p_sys = p_filter->p_sys;
- int i, ch;
- vlc_value_t val1, val2, val3, val4, val5;
- aout_instance_t *p_aout = (aout_instance_t *)p_filter->p_parent;
- for( i = 0; i < 5 ; i ++ )
- var_Create( p_aout, psz_control_names[i], VLC_VAR_FLOAT
- | VLC_VAR_DOINHERIT | VLC_VAR_ISCOMMAND );
- /* Get initial values */
- var_Get( p_aout, psz_control_names[0], &val1 );
- var_Get( p_aout, psz_control_names[1], &val2 );
- var_Get( p_aout, psz_control_names[2], &val3 );
- var_Get( p_aout, psz_control_names[3], &val4 );
- var_Get( p_aout, psz_control_names[4], &val5);
- RoomCallback( VLC_OBJECT( p_aout ), NULL, val1, val1, p_sys );
- WidthCallback( VLC_OBJECT( p_aout ), NULL, val2, val2, p_sys );
- WetCallback( VLC_OBJECT( p_aout ), NULL, val3, val3, p_sys );
- DryCallback( VLC_OBJECT( p_aout ), NULL, val4, val4, p_sys );
- DampCallback( VLC_OBJECT( p_aout ), NULL, val5, val5, p_sys );
- msg_Dbg( p_filter, "%f", val1.f_float );
- /* Add our own callbacks */
- var_AddCallback( p_aout, psz_control_names[0], RoomCallback, p_sys );
- var_AddCallback( p_aout, psz_control_names[1], WidthCallback, p_sys );
- var_AddCallback( p_aout, psz_control_names[2], WetCallback, p_sys );
- var_AddCallback( p_aout, psz_control_names[3], DryCallback, p_sys );
- var_AddCallback( p_aout, psz_control_names[4], DampCallback, p_sys );
- return VLC_SUCCESS;
- }
- static void SpatFilter( aout_instance_t *p_aout,
- aout_filter_t *p_filter, float *out, float *in,
- int i_samples, int i_channels )
- {
- aout_filter_sys_t *p_sys = p_filter->p_sys;
- CLocker locker( &p_sys->lock );
- int i, ch, j;
- for( i = 0; i < i_samples; i++ )
- {
- for( ch = 0 ; ch < 2; ch++)
- {
- in[ch] = in[ch] * SPAT_AMP;
- }
- p_sys->p_reverbm->processreplace( in, out , 1, i_channels);
- in += i_channels;
- out += i_channels;
- }
- }
- static void SpatClean( aout_filter_t *p_filter )
- {
- aout_instance_t *p_aout = (aout_instance_t *)p_filter->p_parent;
- aout_filter_sys_t *p_sys = p_filter->p_sys;
- var_DelCallback( p_aout, psz_control_names[0], RoomCallback, p_sys );
- var_DelCallback( p_aout, psz_control_names[1], WidthCallback, p_sys );
- var_DelCallback( p_aout, psz_control_names[2], WetCallback, p_sys );
- var_DelCallback( p_aout, psz_control_names[3], DryCallback, p_sys );
- var_DelCallback( p_aout, psz_control_names[4], DampCallback, p_sys );
- }
- /*****************************************************************************
- * Variables callbacks
- *****************************************************************************/
- static int RoomCallback( vlc_object_t *p_this, char const *psz_cmd,
- vlc_value_t oldval, vlc_value_t newval, void *p_data )
- {
- aout_filter_sys_t *p_sys = (aout_filter_sys_t*)p_data;
- CLocker locker( &p_sys->lock );
- p_sys->p_reverbm->setroomsize(newval.f_float);
- msg_Dbg (p_this,"room callback %3.1f %s %s %d", newval.f_float, __FILE__,__func__,__LINE__);
- return VLC_SUCCESS;
- }
- static int WidthCallback( vlc_object_t *p_this, char const *psz_cmd,
- vlc_value_t oldval, vlc_value_t newval, void *p_data )
- {
- aout_filter_sys_t *p_sys = (aout_filter_sys_t*)p_data;
- CLocker locker( &p_sys->lock );
- p_sys->p_reverbm->setwidth(newval.f_float);
- msg_Dbg (p_this,"width callback %3.1f %s %s %d", newval.f_float, __FILE__,__func__,__LINE__);
- return VLC_SUCCESS;
- }
- static int WetCallback( vlc_object_t *p_this, char const *psz_cmd,
- vlc_value_t oldval, vlc_value_t newval, void *p_data )
- {
- aout_filter_sys_t *p_sys = (aout_filter_sys_t*)p_data;
- CLocker locker( &p_sys->lock );
- p_sys->p_reverbm->setwet(newval.f_float);
- msg_Dbg (p_this,"wet callback %3.1f %s %s %d", newval.f_float, __FILE__,__func__,__LINE__);
- return VLC_SUCCESS;
- }
- static int DryCallback( vlc_object_t *p_this, char const *psz_cmd,
- vlc_value_t oldval, vlc_value_t newval, void *p_data )
- {
- aout_filter_sys_t *p_sys = (aout_filter_sys_t*)p_data;
- CLocker locker( &p_sys->lock );
- p_sys->p_reverbm->setdry(newval.f_float);
- msg_Dbg (p_this,"dry callback %3.1f %s %s %d", newval.f_float, __FILE__,__func__,__LINE__);
- return VLC_SUCCESS;
- }
- static int DampCallback( vlc_object_t *p_this, char const *psz_cmd,
- vlc_value_t oldval, vlc_value_t newval, void *p_data )
- {
- aout_filter_sys_t *p_sys = (aout_filter_sys_t*)p_data;
- CLocker locker( &p_sys->lock );
- p_sys->p_reverbm->setdamp(newval.f_float);
- msg_Dbg (p_this, "damp callback %3.1f %s %s %d", newval.f_float, __FILE__,__func__,__LINE__);
- return VLC_SUCCESS;
- }