diff options
Diffstat (limited to 'src/replayGain.c')
| -rw-r--r-- | src/replayGain.c | 167 |
1 files changed, 0 insertions, 167 deletions
diff --git a/src/replayGain.c b/src/replayGain.c deleted file mode 100644 index af3d33553..000000000 --- a/src/replayGain.c +++ /dev/null @@ -1,167 +0,0 @@ -/* the Music Player Daemon (MPD) - * Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com) - * (c)2004 replayGain code by AliasMrJones - * This project's homepage is: http://www.musicpd.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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#include "replayGain.h" -#include "utils.h" - -#include "log.h" -#include "conf.h" -#include "audio_format.h" -#include "os_compat.h" - -/* Added 4/14/2004 by AliasMrJones */ -int replayGainState = REPLAYGAIN_OFF; - -static float replayGainPreamp = 1.0; - -void initReplayGainState(void) -{ - ConfigParam *param = getConfigParam(CONF_REPLAYGAIN); - - if (!param) - return; - - if (strcmp(param->value, "track") == 0) { - replayGainState = REPLAYGAIN_TRACK; - } else if (strcmp(param->value, "album") == 0) { - replayGainState = REPLAYGAIN_ALBUM; - } else { - FATAL("replaygain value \"%s\" at line %i is invalid\n", - param->value, param->line); - } - - param = getConfigParam(CONF_REPLAYGAIN_PREAMP); - - if (param) { - char *test; - float f = strtod(param->value, &test); - - if (*test != '\0') { - FATAL("Replaygain preamp \"%s\" is not a number at " - "line %i\n", param->value, param->line); - } - - if (f < -15 || f > 15) { - FATAL("Replaygain preamp \"%s\" is not between -15 and" - "15 at line %i\n", param->value, param->line); - } - - replayGainPreamp = pow(10, f / 20.0); - } -} - -static float computeReplayGainScale(float gain, float peak) -{ - float scale; - - if (gain == 0.0) - return (1); - scale = pow(10.0, gain / 20.0); - scale *= replayGainPreamp; - if (scale > 15.0) - scale = 15.0; - - if (scale * peak > 1.0) { - scale = 1.0 / peak; - } - return (scale); -} - -ReplayGainInfo *newReplayGainInfo(void) -{ - ReplayGainInfo *ret = xmalloc(sizeof(ReplayGainInfo)); - - ret->albumGain = 0.0; - ret->albumPeak = 0.0; - - ret->trackGain = 0.0; - ret->trackPeak = 0.0; - - /* set to -1 so that we know in doReplayGain to compute the scale */ - ret->scale = -1.0; - - return ret; -} - -void freeReplayGainInfo(ReplayGainInfo * info) -{ - free(info); -} - -void doReplayGain(ReplayGainInfo * info, char *buffer, int bufferSize, - const struct audio_format *format) -{ - int16_t *buffer16; - int8_t *buffer8; - int32_t temp32; - float scale; - - if (replayGainState == REPLAYGAIN_OFF || !info) - return; - - if (info->scale < 0) { - switch (replayGainState) { - case REPLAYGAIN_TRACK: - DEBUG("computing ReplayGain track scale with gain %f, " - "peak %f\n", info->trackGain, info->trackPeak); - info->scale = computeReplayGainScale(info->trackGain, - info->trackPeak); - break; - default: - DEBUG("computing ReplayGain album scale with gain %f, " - "peak %f\n", info->albumGain, info->albumPeak); - info->scale = computeReplayGainScale(info->albumGain, - info->albumPeak); - break; - } - } - - if (info->scale <= 1.01 && info->scale >= 0.99) - return; - - buffer16 = (int16_t *) buffer; - buffer8 = (int8_t *) buffer; - - scale = info->scale; - - switch (format->bits) { - case 16: - while (bufferSize > 0) { - temp32 = *buffer16; - temp32 *= scale; - *buffer16 = temp32 > 32767 ? 32767 : - (temp32 < -32768 ? -32768 : temp32); - buffer16++; - bufferSize -= 2; - } - break; - case 8: - while (bufferSize > 0) { - temp32 = *buffer8; - temp32 *= scale; - *buffer8 = temp32 > 127 ? 127 : - (temp32 < -128 ? -128 : temp32); - buffer8++; - bufferSize--; - } - break; - default: - ERROR("%i bits not supported by doReplaygain!\n", format->bits); - } -} |