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/*
DeaDBeeF - ultimate music player for GNU/Linux systems with X11
Copyright (C) 2009-2011 Alexey Yakovenko <waker@users.sourceforge.net>
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.
*/
#include "playlist.h"
#include "volume.h"
#include "replaygain.h"
static int conf_replaygain_mode = 0;
static int conf_replaygain_scale = 1;
static float conf_replaygain_preamp = 0;
static float rg_albumgain = 1;
static float rg_albumpeak = 1;
static float rg_trackgain = 1;
static float rg_trackpeak = 1;
static float rg_albumgain_preamp = 1;
static float rg_trackgain_preamp = 1;
void
replaygain_apply (ddb_waveformat_t *fmt, playItem_t *it, char *bytes, int bytesread) {
// FIXME: separate replaygain DSP plugin?
if (fmt->bps == 16) {
apply_replay_gain_int16 (it, bytes, bytesread);
}
else if (fmt->bps == 24) {
apply_replay_gain_int24 (it, bytes, bytesread);
}
else if (fmt->bps == 8) {
apply_replay_gain_int16 (it, bytes, bytesread);
}
else if (fmt->bps == 32 && !fmt->is_float) {
apply_replay_gain_int32 (it, bytes, bytesread);
}
else if (fmt->bps == 32 && fmt->is_float) {
apply_replay_gain_float32 (it, bytes, bytesread);
}
}
void
replaygain_set (int mode, int scale, float preamp) {
conf_replaygain_mode = mode;
conf_replaygain_scale = scale;
conf_replaygain_preamp = db_to_amp (preamp);
rg_albumgain_preamp = rg_albumgain * conf_replaygain_preamp;
rg_trackgain_preamp = rg_trackgain * conf_replaygain_preamp;
}
void
replaygain_set_values (float albumgain, float albumpeak, float trackgain, float trackpeak) {
rg_albumgain = db_to_amp (albumgain);
rg_trackgain = db_to_amp (trackgain);
rg_albumgain_preamp = rg_albumgain * conf_replaygain_preamp;
rg_trackgain_preamp = rg_trackgain * conf_replaygain_preamp;
rg_albumpeak = albumpeak;
rg_trackpeak = trackpeak;
}
static inline int
get_int_volume (void) {
int vol = 1000;
if (conf_replaygain_mode == 1) {
if (rg_trackgain == 1) {
return -1;
}
vol = rg_trackgain_preamp * 1000;
if (conf_replaygain_scale) {
if (vol * rg_trackpeak > 1000) {
vol = 1000 / rg_trackpeak;
}
}
}
else if (conf_replaygain_mode == 2) {
if (rg_albumgain == 1) {
return -1;
}
vol = rg_albumgain_preamp * 1000;
if (conf_replaygain_scale) {
if (vol * rg_albumpeak > 1000) {
vol = 1000 / rg_albumpeak;
}
}
}
return vol;
}
void
apply_replay_gain_int8 (playItem_t *it, char *bytes, int size) {
if (!conf_replaygain_mode) {
return;
}
int vol = get_int_volume ();
if (vol < 0) {
return;
}
int8_t *s = (int8_t*)bytes;
for (int j = 0; j < size; j++) {
int32_t sample = ((int8_t)(*s)) * vol / 1000;
if (sample > 0x7f) {
sample = 0x7f;
}
else if (sample < -0x80) {
sample = -0x80;
}
*s = (int8_t)sample;
s++;
}
}
void
apply_replay_gain_int16 (playItem_t *it, char *bytes, int size) {
if (!conf_replaygain_mode) {
return;
}
int vol = get_int_volume ();
if (vol < 0) {
return;
}
int16_t *s = (int16_t*)bytes;
for (int j = 0; j < size/2; j++) {
int32_t sample = ((int32_t)(*s)) * vol / 1000;
if (sample > 0x7fff) {
sample = 0x7fff;
}
else if (sample < -0x8000) {
sample = -0x8000;
}
*s = (int16_t)sample;
s++;
}
}
void
apply_replay_gain_int24 (playItem_t *it, char *bytes, int size) {
if (!conf_replaygain_mode) {
return;
}
int64_t vol = get_int_volume ();
if (vol < 0) {
return;
}
char *s = (char*)bytes;
for (int j = 0; j < size/3; j++) {
int32_t sample = ((unsigned char)s[0]) | ((unsigned char)s[1]<<8) | (s[2]<<16);
sample = sample * vol / 1000;
if (sample > 0x7fffff) {
sample = 0x7fffff;
}
else if (sample < -0x800000) {
sample = -0x800000;
}
s[0] = (sample&0x0000ff);
s[1] = (sample&0x00ff00)>>8;
s[2] = (sample&0xff0000)>>16;
s += 3;
}
}
void
apply_replay_gain_int32 (playItem_t *it, char *bytes, int size) {
if (!conf_replaygain_mode) {
return;
}
int64_t vol = get_int_volume ();
if (vol < 0) {
return;
}
int32_t *s = (int32_t*)bytes;
for (int j = 0; j < size/4; j++) {
int64_t sample = ((int32_t)(*s)) * vol / 1000;
if (sample > 0x7fffffff) {
sample = 0x7fffffff;
}
else if (sample < -0x80000000) {
sample = -0x80000000;
}
*s = (int32_t)sample;
s++;
}
}
void
apply_replay_gain_float32 (playItem_t *it, char *bytes, int size) {
if (!conf_replaygain_mode) {
return;
}
float vol = 1.f;
if (conf_replaygain_mode == 1) {
if (rg_trackgain == 1) {
return;
}
vol = rg_trackgain_preamp;
if (conf_replaygain_scale) {
if (vol * rg_trackpeak > 1.f) {
vol = 1.f / rg_trackpeak;
}
}
}
else if (conf_replaygain_mode == 2) {
if (rg_albumgain == 1) {
return;
}
vol = rg_albumgain_preamp;
if (conf_replaygain_scale) {
if (vol * rg_albumpeak > 1.f) {
vol = 1.f / rg_albumpeak;
}
}
}
float *s = (float*)bytes;
for (int j = 0; j < size/4; j++) {
float sample = ((float)*s) * vol;
if (sample > 1.f) {
sample = 1.f;
}
else if (sample < -1.f) {
sample = -1.f;
}
*s = sample;
s++;
}
}
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