mirror of
https://github.com/ZDoom/gzdoom.git
synced 2024-11-14 08:31:23 +00:00
595 lines
17 KiB
C++
595 lines
17 KiB
C++
// Game_Music_Emu https://bitbucket.org/mpyne/game-music-emu/
|
|
|
|
#include "Effects_Buffer.h"
|
|
|
|
#include <string.h>
|
|
|
|
/* Copyright (C) 2003-2006 Shay Green. This module is free software; you
|
|
can redistribute it and/or modify it under the terms of the GNU Lesser
|
|
General Public License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version. This
|
|
module 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 Lesser General Public License for more
|
|
details. You should have received a copy of the GNU Lesser General Public
|
|
License along with this module; if not, write to the Free Software Foundation,
|
|
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */
|
|
|
|
#include "blargg_source.h"
|
|
|
|
#ifdef BLARGG_ENABLE_OPTIMIZER
|
|
#include BLARGG_ENABLE_OPTIMIZER
|
|
#endif
|
|
|
|
typedef blargg_long fixed_t;
|
|
|
|
#define TO_FIXED( f ) fixed_t ((f) * (1L << 15) + 0.5)
|
|
#define FMUL( x, y ) (((x) * (y)) >> 15)
|
|
|
|
const unsigned echo_size = 4096;
|
|
const unsigned echo_mask = echo_size - 1;
|
|
BOOST_STATIC_ASSERT( (echo_size & echo_mask) == 0 ); // must be power of 2
|
|
|
|
const unsigned reverb_size = 8192 * 2;
|
|
const unsigned reverb_mask = reverb_size - 1;
|
|
BOOST_STATIC_ASSERT( (reverb_size & reverb_mask) == 0 ); // must be power of 2
|
|
|
|
Effects_Buffer::config_t::config_t()
|
|
{
|
|
pan_1 = -0.15f;
|
|
pan_2 = 0.15f;
|
|
reverb_delay = 88.0f;
|
|
reverb_level = 0.12f;
|
|
echo_delay = 61.0f;
|
|
echo_level = 0.10f;
|
|
delay_variance = 18.0f;
|
|
effects_enabled = false;
|
|
}
|
|
|
|
void Effects_Buffer::set_depth( double d )
|
|
{
|
|
float f = (float) d;
|
|
config_t c;
|
|
c.pan_1 = -0.6f * f;
|
|
c.pan_2 = 0.6f * f;
|
|
c.reverb_delay = 880 * 0.1f;
|
|
c.echo_delay = 610 * 0.1f;
|
|
if ( f > 0.5 )
|
|
f = 0.5; // TODO: more linear reduction of extreme reverb/echo
|
|
c.reverb_level = 0.5f * f;
|
|
c.echo_level = 0.30f * f;
|
|
c.delay_variance = 180 * 0.1f;
|
|
c.effects_enabled = (d > 0.0f);
|
|
config( c );
|
|
}
|
|
|
|
Effects_Buffer::Effects_Buffer( int num_voices, bool center_only )
|
|
: Multi_Buffer( 2*num_voices )
|
|
, max_voices(num_voices)
|
|
, bufs(max_voices * (center_only ? (max_buf_count - 4) : max_buf_count))
|
|
, chan_types(max_voices * chan_types_count)
|
|
, stereo_remain(0)
|
|
, effect_remain(0)
|
|
// TODO: Reorder buf_count to be initialized before bufs to factor out channel sizing
|
|
, buf_count(max_voices * (center_only ? (max_buf_count - 4) : max_buf_count))
|
|
, effects_enabled(false)
|
|
, reverb_buf(max_voices, std::vector<blip_sample_t>(reverb_size))
|
|
, echo_buf(max_voices, std::vector<blip_sample_t>(echo_size))
|
|
, reverb_pos(max_voices)
|
|
, echo_pos(max_voices)
|
|
{
|
|
set_depth( 0 );
|
|
}
|
|
|
|
Effects_Buffer::~Effects_Buffer()
|
|
{}
|
|
|
|
blargg_err_t Effects_Buffer::set_sample_rate( long rate, int msec )
|
|
{
|
|
try
|
|
{
|
|
for(int i=0; i<max_voices; i++)
|
|
{
|
|
if ( !echo_buf[i].size() )
|
|
{
|
|
echo_buf[i].resize( echo_size );
|
|
}
|
|
|
|
if ( !reverb_buf[i].size() )
|
|
{
|
|
reverb_buf[i].resize( reverb_size );
|
|
}
|
|
}
|
|
}
|
|
catch(std::bad_alloc& ba)
|
|
{
|
|
return "Out of memory";
|
|
}
|
|
|
|
for ( int i = 0; i < buf_count; i++ )
|
|
RETURN_ERR( bufs [i].set_sample_rate( rate, msec ) );
|
|
|
|
config( config_ );
|
|
clear();
|
|
|
|
return Multi_Buffer::set_sample_rate( bufs [0].sample_rate(), bufs [0].length() );
|
|
}
|
|
|
|
void Effects_Buffer::clock_rate( long rate )
|
|
{
|
|
for ( int i = 0; i < buf_count; i++ )
|
|
bufs [i].clock_rate( rate );
|
|
}
|
|
|
|
void Effects_Buffer::bass_freq( int freq )
|
|
{
|
|
for ( int i = 0; i < buf_count; i++ )
|
|
bufs [i].bass_freq( freq );
|
|
}
|
|
|
|
void Effects_Buffer::clear()
|
|
{
|
|
stereo_remain = 0;
|
|
effect_remain = 0;
|
|
|
|
for(int i=0; i<max_voices; i++)
|
|
{
|
|
if ( echo_buf[i].size() )
|
|
memset( &echo_buf[i][0], 0, echo_size * sizeof echo_buf[i][0] );
|
|
|
|
if ( reverb_buf[i].size() )
|
|
memset( &reverb_buf[i][0], 0, reverb_size * sizeof reverb_buf[i][0] );
|
|
}
|
|
|
|
for ( int i = 0; i < buf_count; i++ )
|
|
bufs [i].clear();
|
|
}
|
|
|
|
inline int pin_range( int n, int max, int min = 0 )
|
|
{
|
|
if ( n < min )
|
|
return min;
|
|
if ( n > max )
|
|
return max;
|
|
return n;
|
|
}
|
|
|
|
void Effects_Buffer::config( const config_t& cfg )
|
|
{
|
|
channels_changed();
|
|
|
|
// clear echo and reverb buffers
|
|
// ensure the echo/reverb buffers have already been allocated, so this method can be
|
|
// called before set_sample_rate is called
|
|
if ( !config_.effects_enabled && cfg.effects_enabled && echo_buf[0].size() )
|
|
{
|
|
for(int i=0; i<max_voices; i++)
|
|
{
|
|
memset( &echo_buf[i][0], 0, echo_size * sizeof echo_buf[i][0] );
|
|
memset( &reverb_buf[i][0], 0, reverb_size * sizeof reverb_buf[i][0] );
|
|
}
|
|
}
|
|
|
|
config_ = cfg;
|
|
|
|
if ( config_.effects_enabled )
|
|
{
|
|
// convert to internal format
|
|
|
|
chans.pan_1_levels [0] = TO_FIXED( 1 ) - TO_FIXED( config_.pan_1 );
|
|
chans.pan_1_levels [1] = TO_FIXED( 2 ) - chans.pan_1_levels [0];
|
|
|
|
chans.pan_2_levels [0] = TO_FIXED( 1 ) - TO_FIXED( config_.pan_2 );
|
|
chans.pan_2_levels [1] = TO_FIXED( 2 ) - chans.pan_2_levels [0];
|
|
|
|
chans.reverb_level = TO_FIXED( config_.reverb_level );
|
|
chans.echo_level = TO_FIXED( config_.echo_level );
|
|
|
|
int delay_offset = int (1.0 / 2000 * config_.delay_variance * sample_rate());
|
|
|
|
int reverb_sample_delay = int (1.0 / 1000 * config_.reverb_delay * sample_rate());
|
|
chans.reverb_delay_l = pin_range( reverb_size -
|
|
(reverb_sample_delay - delay_offset) * 2, reverb_size - 2, 0 );
|
|
chans.reverb_delay_r = pin_range( reverb_size + 1 -
|
|
(reverb_sample_delay + delay_offset) * 2, reverb_size - 1, 1 );
|
|
|
|
int echo_sample_delay = int (1.0 / 1000 * config_.echo_delay * sample_rate());
|
|
chans.echo_delay_l = pin_range( echo_size - 1 - (echo_sample_delay - delay_offset),
|
|
echo_size - 1 );
|
|
chans.echo_delay_r = pin_range( echo_size - 1 - (echo_sample_delay + delay_offset),
|
|
echo_size - 1 );
|
|
|
|
for(int i=0; i<max_voices; i++)
|
|
{
|
|
chan_types [i*chan_types_count+0].center = &bufs [i*max_buf_count+0];
|
|
chan_types [i*chan_types_count+0].left = &bufs [i*max_buf_count+3];
|
|
chan_types [i*chan_types_count+0].right = &bufs [i*max_buf_count+4];
|
|
|
|
chan_types [i*chan_types_count+1].center = &bufs [i*max_buf_count+1];
|
|
chan_types [i*chan_types_count+1].left = &bufs [i*max_buf_count+3];
|
|
chan_types [i*chan_types_count+1].right = &bufs [i*max_buf_count+4];
|
|
|
|
chan_types [i*chan_types_count+2].center = &bufs [i*max_buf_count+2];
|
|
chan_types [i*chan_types_count+2].left = &bufs [i*max_buf_count+5];
|
|
chan_types [i*chan_types_count+2].right = &bufs [i*max_buf_count+6];
|
|
}
|
|
assert( 2 < chan_types_count );
|
|
}
|
|
else
|
|
{
|
|
for(int i=0; i<max_voices; i++)
|
|
{
|
|
// set up outputs
|
|
for ( int j = 0; j < chan_types_count; j++ )
|
|
{
|
|
channel_t& c = chan_types [i*chan_types_count+j];
|
|
c.center = &bufs [i*max_buf_count+0];
|
|
c.left = &bufs [i*max_buf_count+1];
|
|
c.right = &bufs [i*max_buf_count+2];
|
|
}
|
|
}
|
|
}
|
|
|
|
if ( buf_count < max_buf_count ) // if center_only
|
|
{
|
|
for(int i=0; i<max_voices; i++)
|
|
{
|
|
for ( int j = 0; j < chan_types_count; j++ )
|
|
{
|
|
channel_t& c = chan_types [i*chan_types_count+j];
|
|
c.left = c.center;
|
|
c.right = c.center;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
Effects_Buffer::channel_t Effects_Buffer::channel( int i, int type )
|
|
{
|
|
int out = chan_types_count-1;
|
|
if ( !type )
|
|
{
|
|
out = i % 5;
|
|
if ( out > chan_types_count-1 )
|
|
out = chan_types_count-1;
|
|
}
|
|
else if ( !(type & noise_type) && (type & type_index_mask) % 3 != 0 )
|
|
{
|
|
out = type & 1;
|
|
}
|
|
return chan_types [(i%max_voices)*chan_types_count+out];
|
|
}
|
|
|
|
void Effects_Buffer::end_frame( blip_time_t clock_count )
|
|
{
|
|
int bufs_used = 0;
|
|
int stereo_mask = (config_.effects_enabled ? 0x78 : 0x06);
|
|
|
|
const int buf_count_per_voice = buf_count/max_voices;
|
|
for ( int v = 0; v < max_voices; v++ ) // foreach voice
|
|
{
|
|
for ( int i = 0; i < buf_count_per_voice; i++) // foreach buffer of that voice
|
|
{
|
|
bufs_used |= bufs [v*buf_count_per_voice + i].clear_modified() << i;
|
|
bufs [v*buf_count_per_voice + i].end_frame( clock_count );
|
|
|
|
if ( (bufs_used & stereo_mask) && buf_count == max_voices*max_buf_count )
|
|
stereo_remain = max(stereo_remain, bufs [v*buf_count_per_voice + i].samples_avail() + bufs [v*buf_count_per_voice + i].output_latency());
|
|
if ( effects_enabled || config_.effects_enabled )
|
|
effect_remain = max(effect_remain, bufs [v*buf_count_per_voice + i].samples_avail() + bufs [v*buf_count_per_voice + i].output_latency());
|
|
}
|
|
bufs_used = 0;
|
|
}
|
|
|
|
effects_enabled = config_.effects_enabled;
|
|
}
|
|
|
|
long Effects_Buffer::samples_avail() const
|
|
{
|
|
return bufs [0].samples_avail() * 2;
|
|
}
|
|
|
|
long Effects_Buffer::read_samples( blip_sample_t* out, long total_samples )
|
|
{
|
|
const int n_channels = max_voices * 2;
|
|
const int buf_count_per_voice = buf_count/max_voices;
|
|
|
|
require( total_samples % n_channels == 0 ); // as many items needed to fill at least one frame
|
|
|
|
long remain = bufs [0].samples_avail();
|
|
total_samples = remain = min( remain, total_samples/n_channels );
|
|
|
|
while ( remain )
|
|
{
|
|
int active_bufs = buf_count_per_voice;
|
|
long count = remain;
|
|
|
|
// optimizing mixing to skip any channels which had nothing added
|
|
if ( effect_remain )
|
|
{
|
|
if ( count > effect_remain )
|
|
count = effect_remain;
|
|
|
|
if ( stereo_remain )
|
|
{
|
|
mix_enhanced( out, count );
|
|
}
|
|
else
|
|
{
|
|
mix_mono_enhanced( out, count );
|
|
active_bufs = 3;
|
|
}
|
|
}
|
|
else if ( stereo_remain )
|
|
{
|
|
mix_stereo( out, count );
|
|
active_bufs = 3;
|
|
}
|
|
else
|
|
{
|
|
mix_mono( out, count );
|
|
active_bufs = 1;
|
|
}
|
|
|
|
out += count * n_channels;
|
|
remain -= count;
|
|
|
|
stereo_remain -= count;
|
|
if ( stereo_remain < 0 )
|
|
stereo_remain = 0;
|
|
|
|
effect_remain -= count;
|
|
if ( effect_remain < 0 )
|
|
effect_remain = 0;
|
|
|
|
// skip the output from any buffers that didn't contribute to the sound output
|
|
// during this frame (e.g. if we only render mono then only the very first buf
|
|
// is 'active')
|
|
for ( int v = 0; v < max_voices; v++ ) // foreach voice
|
|
{
|
|
for ( int i = 0; i < buf_count_per_voice; i++) // foreach buffer of that voice
|
|
{
|
|
if ( i < active_bufs )
|
|
bufs [v*buf_count_per_voice + i].remove_samples( count );
|
|
else // keep time synchronized
|
|
bufs [v*buf_count_per_voice + i].remove_silence( count );
|
|
}
|
|
}
|
|
}
|
|
|
|
return total_samples * n_channels;
|
|
}
|
|
|
|
void Effects_Buffer::mix_mono( blip_sample_t* out_, blargg_long count )
|
|
{
|
|
for(int i=0; i<max_voices; i++)
|
|
{
|
|
blip_sample_t* BLIP_RESTRICT out = out_;
|
|
int const bass = BLIP_READER_BASS( bufs [i*max_buf_count+0] );
|
|
BLIP_READER_BEGIN( c, bufs [i*max_buf_count+0] );
|
|
|
|
// unrolled loop
|
|
for ( blargg_long n = count >> 1; n; --n )
|
|
{
|
|
blargg_long cs0 = BLIP_READER_READ( c );
|
|
BLIP_READER_NEXT( c, bass );
|
|
|
|
blargg_long cs1 = BLIP_READER_READ( c );
|
|
BLIP_READER_NEXT( c, bass );
|
|
|
|
if ( (int16_t) cs0 != cs0 )
|
|
cs0 = 0x7FFF - (cs0 >> 24);
|
|
((uint32_t*) out) [i*2+0] = ((uint16_t) cs0) | (uint16_t(cs0) << 16);
|
|
|
|
if ( (int16_t) cs1 != cs1 )
|
|
cs1 = 0x7FFF - (cs1 >> 24);
|
|
((uint32_t*) out) [i*2+1] = ((uint16_t) cs1) | (uint16_t(cs1) << 16);
|
|
out += max_voices*4;
|
|
}
|
|
|
|
if ( count & 1 )
|
|
{
|
|
int s = BLIP_READER_READ( c );
|
|
BLIP_READER_NEXT( c, bass );
|
|
out [i*2+0] = s;
|
|
out [i*2+1] = s;
|
|
if ( (int16_t) s != s )
|
|
{
|
|
s = 0x7FFF - (s >> 24);
|
|
out [i*2+0] = s;
|
|
out [i*2+1] = s;
|
|
}
|
|
}
|
|
|
|
BLIP_READER_END( c, bufs [i*max_buf_count+0] );
|
|
}
|
|
}
|
|
|
|
void Effects_Buffer::mix_stereo( blip_sample_t* out_, blargg_long frames )
|
|
{
|
|
for(int i=0; i<max_voices; i++)
|
|
{
|
|
blip_sample_t* BLIP_RESTRICT out = out_;
|
|
int const bass = BLIP_READER_BASS( bufs [i*max_buf_count+0] );
|
|
BLIP_READER_BEGIN( c, bufs [i*max_buf_count+0] );
|
|
BLIP_READER_BEGIN( l, bufs [i*max_buf_count+1] );
|
|
BLIP_READER_BEGIN( r, bufs [i*max_buf_count+2] );
|
|
|
|
int count = frames;
|
|
while ( count-- )
|
|
{
|
|
int cs = BLIP_READER_READ( c );
|
|
BLIP_READER_NEXT( c, bass );
|
|
int left = cs + BLIP_READER_READ( l );
|
|
int right = cs + BLIP_READER_READ( r );
|
|
BLIP_READER_NEXT( l, bass );
|
|
BLIP_READER_NEXT( r, bass );
|
|
|
|
if ( (int16_t) left != left )
|
|
left = 0x7FFF - (left >> 24);
|
|
|
|
if ( (int16_t) right != right )
|
|
right = 0x7FFF - (right >> 24);
|
|
|
|
out [i*2+0] = left;
|
|
out [i*2+1] = right;
|
|
|
|
out += max_voices*2;
|
|
|
|
}
|
|
|
|
BLIP_READER_END( r, bufs [i*max_buf_count+2] );
|
|
BLIP_READER_END( l, bufs [i*max_buf_count+1] );
|
|
BLIP_READER_END( c, bufs [i*max_buf_count+0] );
|
|
}
|
|
}
|
|
|
|
void Effects_Buffer::mix_mono_enhanced( blip_sample_t* out_, blargg_long frames )
|
|
{
|
|
for(int i=0; i<max_voices; i++)
|
|
{
|
|
blip_sample_t* BLIP_RESTRICT out = out_;
|
|
int const bass = BLIP_READER_BASS( bufs [i*max_buf_count+2] );
|
|
BLIP_READER_BEGIN( center, bufs [i*max_buf_count+2] );
|
|
BLIP_READER_BEGIN( sq1, bufs [i*max_buf_count+0] );
|
|
BLIP_READER_BEGIN( sq2, bufs [i*max_buf_count+1] );
|
|
|
|
blip_sample_t* const reverb_buf = &this->reverb_buf[i][0];
|
|
blip_sample_t* const echo_buf = &this->echo_buf[i][0];
|
|
int echo_pos = this->echo_pos[i];
|
|
int reverb_pos = this->reverb_pos[i];
|
|
|
|
int count = frames;
|
|
while ( count-- )
|
|
{
|
|
int sum1_s = BLIP_READER_READ( sq1 );
|
|
int sum2_s = BLIP_READER_READ( sq2 );
|
|
|
|
BLIP_READER_NEXT( sq1, bass );
|
|
BLIP_READER_NEXT( sq2, bass );
|
|
|
|
int new_reverb_l = FMUL( sum1_s, chans.pan_1_levels [0] ) +
|
|
FMUL( sum2_s, chans.pan_2_levels [0] ) +
|
|
reverb_buf [(reverb_pos + chans.reverb_delay_l) & reverb_mask];
|
|
|
|
int new_reverb_r = FMUL( sum1_s, chans.pan_1_levels [1] ) +
|
|
FMUL( sum2_s, chans.pan_2_levels [1] ) +
|
|
reverb_buf [(reverb_pos + chans.reverb_delay_r) & reverb_mask];
|
|
|
|
fixed_t reverb_level = chans.reverb_level;
|
|
reverb_buf [reverb_pos] = (blip_sample_t) FMUL( new_reverb_l, reverb_level );
|
|
reverb_buf [reverb_pos + 1] = (blip_sample_t) FMUL( new_reverb_r, reverb_level );
|
|
reverb_pos = (reverb_pos + 2) & reverb_mask;
|
|
|
|
int sum3_s = BLIP_READER_READ( center );
|
|
BLIP_READER_NEXT( center, bass );
|
|
|
|
int left = new_reverb_l + sum3_s + FMUL( chans.echo_level,
|
|
echo_buf [(echo_pos + chans.echo_delay_l) & echo_mask] );
|
|
int right = new_reverb_r + sum3_s + FMUL( chans.echo_level,
|
|
echo_buf [(echo_pos + chans.echo_delay_r) & echo_mask] );
|
|
|
|
echo_buf [echo_pos] = sum3_s;
|
|
echo_pos = (echo_pos + 1) & echo_mask;
|
|
|
|
if ( (int16_t) left != left )
|
|
left = 0x7FFF - (left >> 24);
|
|
|
|
if ( (int16_t) right != right )
|
|
right = 0x7FFF - (right >> 24);
|
|
|
|
out [i*2+0] = left;
|
|
out [i*2+1] = right;
|
|
out += max_voices*2;
|
|
}
|
|
this->reverb_pos[i] = reverb_pos;
|
|
this->echo_pos[i] = echo_pos;
|
|
|
|
BLIP_READER_END( sq1, bufs [i*max_buf_count+0] );
|
|
BLIP_READER_END( sq2, bufs [i*max_buf_count+1] );
|
|
BLIP_READER_END( center, bufs [i*max_buf_count+2] );
|
|
}
|
|
}
|
|
|
|
void Effects_Buffer::mix_enhanced( blip_sample_t* out_, blargg_long frames )
|
|
{
|
|
for(int i=0; i<max_voices; i++)
|
|
{
|
|
blip_sample_t* BLIP_RESTRICT out = out_;
|
|
int const bass = BLIP_READER_BASS( bufs [i*max_buf_count+2] );
|
|
BLIP_READER_BEGIN( center, bufs [i*max_buf_count+2] );
|
|
BLIP_READER_BEGIN( l1, bufs [i*max_buf_count+3] );
|
|
BLIP_READER_BEGIN( r1, bufs [i*max_buf_count+4] );
|
|
BLIP_READER_BEGIN( l2, bufs [i*max_buf_count+5] );
|
|
BLIP_READER_BEGIN( r2, bufs [i*max_buf_count+6] );
|
|
BLIP_READER_BEGIN( sq1, bufs [i*max_buf_count+0] );
|
|
BLIP_READER_BEGIN( sq2, bufs [i*max_buf_count+1] );
|
|
|
|
blip_sample_t* const reverb_buf = &this->reverb_buf[i][0];
|
|
blip_sample_t* const echo_buf = &this->echo_buf[i][0];
|
|
int echo_pos = this->echo_pos[i];
|
|
int reverb_pos = this->reverb_pos[i];
|
|
|
|
int count = frames;
|
|
while ( count-- )
|
|
{
|
|
int sum1_s = BLIP_READER_READ( sq1 );
|
|
int sum2_s = BLIP_READER_READ( sq2 );
|
|
|
|
BLIP_READER_NEXT( sq1, bass );
|
|
BLIP_READER_NEXT( sq2, bass );
|
|
|
|
int new_reverb_l = FMUL( sum1_s, chans.pan_1_levels [0] ) +
|
|
FMUL( sum2_s, chans.pan_2_levels [0] ) + BLIP_READER_READ( l1 ) +
|
|
reverb_buf [(reverb_pos + chans.reverb_delay_l) & reverb_mask];
|
|
|
|
int new_reverb_r = FMUL( sum1_s, chans.pan_1_levels [1] ) +
|
|
FMUL( sum2_s, chans.pan_2_levels [1] ) + BLIP_READER_READ( r1 ) +
|
|
reverb_buf [(reverb_pos + chans.reverb_delay_r) & reverb_mask];
|
|
|
|
BLIP_READER_NEXT( l1, bass );
|
|
BLIP_READER_NEXT( r1, bass );
|
|
|
|
fixed_t reverb_level = chans.reverb_level;
|
|
reverb_buf [reverb_pos] = (blip_sample_t) FMUL( new_reverb_l, reverb_level );
|
|
reverb_buf [reverb_pos + 1] = (blip_sample_t) FMUL( new_reverb_r, reverb_level );
|
|
reverb_pos = (reverb_pos + 2) & reverb_mask;
|
|
|
|
int sum3_s = BLIP_READER_READ( center );
|
|
BLIP_READER_NEXT( center, bass );
|
|
|
|
int left = new_reverb_l + sum3_s + BLIP_READER_READ( l2 ) + FMUL( chans.echo_level,
|
|
echo_buf [(echo_pos + chans.echo_delay_l) & echo_mask] );
|
|
int right = new_reverb_r + sum3_s + BLIP_READER_READ( r2 ) + FMUL( chans.echo_level,
|
|
echo_buf [(echo_pos + chans.echo_delay_r) & echo_mask] );
|
|
|
|
BLIP_READER_NEXT( l2, bass );
|
|
BLIP_READER_NEXT( r2, bass );
|
|
|
|
echo_buf [echo_pos] = sum3_s;
|
|
echo_pos = (echo_pos + 1) & echo_mask;
|
|
|
|
if ( (int16_t) left != left )
|
|
left = 0x7FFF - (left >> 24);
|
|
|
|
if ( (int16_t) right != right )
|
|
right = 0x7FFF - (right >> 24);
|
|
|
|
out [i*2+0] = left;
|
|
out [i*2+1] = right;
|
|
|
|
out += max_voices*2;
|
|
}
|
|
this->reverb_pos[i] = reverb_pos;
|
|
this->echo_pos[i] = echo_pos;
|
|
|
|
BLIP_READER_END( l1, bufs [i*max_buf_count+3] );
|
|
BLIP_READER_END( r1, bufs [i*max_buf_count+4] );
|
|
BLIP_READER_END( l2, bufs [i*max_buf_count+5] );
|
|
BLIP_READER_END( r2, bufs [i*max_buf_count+6] );
|
|
BLIP_READER_END( sq1, bufs [i*max_buf_count+0] );
|
|
BLIP_READER_END( sq2, bufs [i*max_buf_count+1] );
|
|
BLIP_READER_END( center, bufs [i*max_buf_count+2] );
|
|
}
|
|
}
|
|
|