--- /dev/null
+// Reverb model implementation
+//
+//
+// Google Summer of Code 2007
+//
+// Authors: Biodun Osunkunle <biodun@videolan.org>
+//
+// Mentor : Jean-Baptiste Kempf <jb@videolan.org>
+//
+// Original written by Jezar at Dreampoint, June 2000
+
+// This code is public domain
+
+#include "revmodel.hpp"
+#include <stdlib.h>
+
+revmodel::revmodel()
+{
+ // Tie the components to their buffers
+ combL[0].setbuffer(bufcombL1,combtuningL1);
+ combR[0].setbuffer(bufcombR1,combtuningR1);
+ combL[1].setbuffer(bufcombL2,combtuningL2);
+ combR[1].setbuffer(bufcombR2,combtuningR2);
+ combL[2].setbuffer(bufcombL3,combtuningL3);
+ combR[2].setbuffer(bufcombR3,combtuningR3);
+ combL[3].setbuffer(bufcombL4,combtuningL4);
+ combR[3].setbuffer(bufcombR4,combtuningR4);
+ combL[4].setbuffer(bufcombL5,combtuningL5);
+ combR[4].setbuffer(bufcombR5,combtuningR5);
+ combL[5].setbuffer(bufcombL6,combtuningL6);
+ combR[5].setbuffer(bufcombR6,combtuningR6);
+ combL[6].setbuffer(bufcombL7,combtuningL7);
+ combR[6].setbuffer(bufcombR7,combtuningR7);
+ combL[7].setbuffer(bufcombL8,combtuningL8);
+ combR[7].setbuffer(bufcombR8,combtuningR8);
+ allpassL[0].setbuffer(bufallpassL1,allpasstuningL1);
+ allpassR[0].setbuffer(bufallpassR1,allpasstuningR1);
+ allpassL[1].setbuffer(bufallpassL2,allpasstuningL2);
+ allpassR[1].setbuffer(bufallpassR2,allpasstuningR2);
+ allpassL[2].setbuffer(bufallpassL3,allpasstuningL3);
+ allpassR[2].setbuffer(bufallpassR3,allpasstuningR3);
+ allpassL[3].setbuffer(bufallpassL4,allpasstuningL4);
+ allpassR[3].setbuffer(bufallpassR4,allpasstuningR4);
+
+ // Set default values
+ allpassL[0].setfeedback(0.5f);
+ allpassR[0].setfeedback(0.5f);
+ allpassL[1].setfeedback(0.5f);
+ allpassR[1].setfeedback(0.5f);
+ allpassL[2].setfeedback(0.5f);
+ allpassR[2].setfeedback(0.5f);
+ allpassL[3].setfeedback(0.5f);
+ allpassR[3].setfeedback(0.5f);
+ setwet(initialwet);
+ setroomsize(initialroom);
+ setdry(initialdry);
+ setdamp(initialdamp);
+ setwidth(initialwidth);
+ setmode(initialmode);
+
+ // Buffer will be full of rubbish - so we MUST mute them
+ mute();
+}
+
+void revmodel::mute()
+{
+ int i;
+ if (getmode() >= freezemode)
+ return;
+
+ for (i = 0 ; i < numcombs ; i++)
+ {
+ combL[i].mute();
+ combR[i].mute();
+ }
+ for (i=0;i<numallpasses;i++)
+ {
+ allpassL[i].mute();
+ allpassR[i].mute();
+ }
+}
+
+void revmodel::processreplace(float *inputL, float *outputL, long numsamples, int skip)
+{
+ float outL,outR,input;
+ float inputR;
+ int i;
+
+ outL = outR = 0;
+ if (skip > 1)
+ inputR = inputL[1];
+ else
+ inputR = inputL[0];
+ input = (inputL[0] + inputR) * gain;
+
+ // Accumulate comb filters in parallel
+ for(i=0; i<numcombs; i++)
+ {
+ outL += combL[i].process(input);
+ outR += combR[i].process(input);
+ }
+
+ // Feed through allpasses in series
+ for(i=0; i<numallpasses; i++)
+ {
+ outL = allpassL[i].process(outL);
+ outR = allpassR[i].process(outR);
+ }
+
+ // Calculate output REPLACING anything already there
+ outputL[0] = (outL*wet1 + outR*wet2 + inputR*dry);
+ if (skip > 1)
+ outputL[1] = (outR*wet1 + outL*wet2 + inputR*dry);
+}
+
+void revmodel::processmix(float *inputL, float *outputL, long numsamples, int skip)
+{
+ float outL,outR,input;
+ float inputR;
+ int i;
+
+ outL = outR = 0;
+ if (skip > 1)
+ inputR = inputL[1];
+ else
+ inputR = inputL[0];
+ input = (inputL[0] + inputR) * gain;
+
+ // Accumulate comb filters in parallel
+ for(i=0; i<numcombs; i++)
+ {
+ outL += combL[i].process(input);
+ outR += combR[i].process(input);
+ }
+
+ // Feed through allpasses in series
+ for(i=0; i<numallpasses; i++)
+ {
+ outL = allpassL[i].process(outL);
+ outR = allpassR[i].process(outR);
+ }
+
+ // Calculate output REPLACING anything already there
+ outputL[0] += (outL*wet1 + outR*wet2 + inputR*dry);
+ if (skip > 1)
+ outputL[1] += (outR*wet1 + outL*wet2 + inputR*dry);
+}
+
+void revmodel::update()
+{
+// Recalculate internal values after parameter change
+
+ int i;
+
+ wet1 = wet*(width/2 + 0.5f);
+ wet2 = wet*((1-width)/2);
+
+ if (mode >= freezemode)
+ {
+ roomsize1 = 1;
+ damp1 = 0;
+ gain = muted;
+ }
+ else
+ {
+ roomsize1 = roomsize;
+ damp1 = damp;
+ gain = fixedgain;
+ }
+
+ for(i=0; i<numcombs; i++)
+ {
+ combL[i].setfeedback(roomsize1);
+ combR[i].setfeedback(roomsize1);
+ }
+
+ for(i=0; i<numcombs; i++)
+ {
+ combL[i].setdamp(damp1);
+ combR[i].setdamp(damp1);
+ }
+}
+
+// The following get/set functions are not inlined, because
+// speed is never an issue when calling them, and also
+// because as you develop the reverb model, you may
+// wish to take dynamic action when they are called.
+
+void revmodel::setroomsize(float value)
+{
+ roomsize = (value*scaleroom) + offsetroom;
+ update();
+}
+
+float revmodel::getroomsize()
+{
+ return (roomsize-offsetroom)/scaleroom;
+}
+
+void revmodel::setdamp(float value)
+{
+ damp = value*scaledamp;
+ update();
+}
+
+float revmodel::getdamp()
+{
+ return damp/scaledamp;
+}
+
+void revmodel::setwet(float value)
+{
+ wet = value*scalewet;
+ update();
+}
+
+float revmodel::getwet()
+{
+ return wet/scalewet;
+}
+
+void revmodel::setdry(float value)
+{
+ dry = value*scaledry;
+}
+
+float revmodel::getdry()
+{
+ return dry/scaledry;
+}
+
+void revmodel::setwidth(float value)
+{
+ width = value;
+ update();
+}
+
+float revmodel::getwidth()
+{
+ return width;
+}
+
+void revmodel::setmode(float value)
+{
+ mode = value;
+ update();
+}
+
+float revmodel::getmode()
+{
+ if (mode >= freezemode)
+ return 1;
+ else
+ return 0;
+}
+
+//ends
--- /dev/null
+/*****************************************************************************
+ * spatializer.cpp:
+ *****************************************************************************
+ * 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>
+
+#include <vlc/vlc.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 * );
+
+vlc_module_begin();
+ set_description( _("spatializer") );
+ set_shortname( _("spatializer" ) );
+ set_capability( "audio filter", 0 );
+ set_category( CAT_AUDIO );
+ set_subcategory( SUBCAT_AUDIO_AFILTER );
+
+ set_callbacks( Open, Close );
+ add_shortcut( "spatializer" );
+ add_float( "Roomsize", 1.05, NULL, NULL,NULL, VLC_TRUE);
+ add_float( "Width", 10.0, NULL, NULL,NULL, VLC_TRUE);
+ add_float( "Wet", 3.0, NULL, NULL,NULL, VLC_TRUE);
+ add_float( "Dry", 2.0, NULL, NULL,NULL, VLC_TRUE);
+ add_float( "Damp", 1.0, NULL, NULL,NULL, VLC_TRUE);
+vlc_module_end();
+
+/*****************************************************************************
+ * Local prototypes
+ *****************************************************************************/
+typedef struct aout_filter_sys_t
+{
+ /* reverb static config */
+ vlc_bool_t b_first;
+
+} aout_filter_sys_t;
+
+static revmodel reverbm;
+
+static const char *psz_control_names[] =
+{
+ "Roomsize", "Width" , "Wet", "Dry", "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;
+ vlc_bool_t b_fit = VLC_TRUE;
+ msg_Dbg(p_this, "Opening filter spatializer %s %s %d\n", __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 = VLC_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 = VLC_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 = VLC_TRUE;
+
+ /* Allocate structure */
+ p_sys = p_filter->p_sys = (aout_filter_sys_t*)malloc( sizeof( aout_filter_sys_t ) );
+ reverbm.setroomsize(1.05);
+ reverbm.setwet(10.0f);
+ reverbm.setdry(1.0f);
+ reverbm.setdamp(0.3);
+ 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 );
+ free( p_sys );
+ msg_Dbg(p_this, "Closing filter spatializer %s %s %d\n", __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( int i = 0; i < 5 ; i ++ )
+ {
+ var_CreateGetFloatCommand( p_aout, psz_control_names[i] );
+ }
+
+ /* 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 )
+{
+ int i, ch, j;
+ for( i = 0; i < i_samples; i++ )
+ {
+ for( ch = 0 ; ch < 2; ch++)
+ {
+ in[ch] = in[ch] * SPAT_AMP;
+ }
+ reverbm.processreplace( in, out , 1, i_channels);
+ in += i_channels;
+ out += i_channels;
+ }
+}
+
+static void SpatClean( aout_filter_t *p_filter )
+{
+ aout_filter_sys_t *p_sys = p_filter->p_sys;
+
+ var_DelCallback( (aout_instance_t *)p_filter->p_parent,
+ "Roomsize", RoomCallback, p_sys );
+ var_DelCallback( (aout_instance_t *)p_filter->p_parent,
+ "Width", WidthCallback, p_sys );
+ var_DelCallback( (aout_instance_t *)p_filter->p_parent,
+ "Wet", WetCallback, p_sys );
+ var_DelCallback( (aout_instance_t *)p_filter->p_parent,
+ "Dry", DryCallback, p_sys );
+ var_DelCallback( (aout_instance_t *)p_filter->p_parent,
+ "Damp", DampCallback, p_sys );
+
+}
+
+static int RoomCallback( vlc_object_t *p_this, char const *psz_cmd,
+ vlc_value_t oldval, vlc_value_t newval, void *p_data )
+{
+ msg_Dbg (p_this,"room callback %3.1f %s %s %d\n", newval.f_float, __FILE__,__func__,__LINE__);
+ reverbm.setroomsize(newval.f_float);
+ 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 )
+{
+ reverbm.setwidth(newval.f_float);
+ msg_Dbg (p_this,"width callback %3.1f %s %s %d\n", 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 )
+{
+ reverbm.setwet(newval.f_float);
+ msg_Dbg (p_this,"wet callback %3.1f %s %s %d\n", 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 )
+{
+ reverbm.setdry(newval.f_float);
+ msg_Dbg (p_this,"dry callback %3.1f %s %s %d\n", 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 )
+{
+ reverbm.setdamp(newval.f_float);
+ msg_Dbg (p_this, "damp callback %3.1f %s %s %d\n", newval.f_float, __FILE__,__func__,__LINE__);
+ return VLC_SUCCESS;
+}
+