From 752dfb3d95482c562e5d24c6ea839c4815de9a6d Mon Sep 17 00:00:00 2001 From: Max Kellermann Date: Sun, 14 Feb 2010 17:04:39 +0100 Subject: replay_gain: reimplement as a filter plugin Apply the replay gain in the output thread. This means a new setting will be active instantly, without going through the whole music pipe. And we might have different replay gain settings for each audio output device. --- src/replay_gain_state.c | 117 ------------------------------------------------ 1 file changed, 117 deletions(-) delete mode 100644 src/replay_gain_state.c (limited to 'src/replay_gain_state.c') diff --git a/src/replay_gain_state.c b/src/replay_gain_state.c deleted file mode 100644 index cfb2ce120..000000000 --- a/src/replay_gain_state.c +++ /dev/null @@ -1,117 +0,0 @@ -/* - * Copyright (C) 2003-2010 The Music Player Daemon Project - * 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., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#include "config.h" -#include "replay_gain_state.h" -#include "pcm_volume.h" - -#include - -#include - -struct replay_gain_state { - float preamp, missing_preamp; - - enum replay_gain_mode mode; - - struct replay_gain_info info; - - float scale; -}; - -struct replay_gain_state * -replay_gain_state_new(float preamp, float missing_preamp) -{ - struct replay_gain_state *state = g_new(struct replay_gain_state, 1); - - state->preamp = preamp; - state->scale = state->missing_preamp = missing_preamp; - state->mode = REPLAY_GAIN_OFF; - replay_gain_info_init(&state->info); - - return state; -} - -void -replay_gain_state_free(struct replay_gain_state *state) -{ - assert(state != NULL); - - g_free(state); -} - -static void -replay_gain_state_calc_scale(struct replay_gain_state *state) -{ - assert(state != NULL); - - if (state->mode == REPLAY_GAIN_OFF) - return; - - const struct replay_gain_tuple *tuple = - &state->info.tuples[state->mode]; - if (replay_gain_tuple_defined(tuple)) { - g_debug("computing ReplayGain scale with gain %f, peak %f", - tuple->gain, tuple->peak); - - state->scale = replay_gain_tuple_scale(tuple, state->preamp); - } else - state->scale = state->missing_preamp; -} - -void -replay_gain_state_set_mode(struct replay_gain_state *state, - enum replay_gain_mode mode) -{ - assert(state != NULL); - - if (mode == state->mode) - return; - - state->mode = mode; - - replay_gain_state_calc_scale(state); -} - -void -replay_gain_state_set_info(struct replay_gain_state *state, - const struct replay_gain_info *info) -{ - assert(state != NULL); - - if (info != NULL) - state->info = *info; - else - replay_gain_info_init(&state->info); - - replay_gain_state_calc_scale(state); -} - -void -replay_gain_state_apply(const struct replay_gain_state *state, - void *buffer, size_t size, - const struct audio_format *format) -{ - assert(state != NULL); - - if (state->mode == REPLAY_GAIN_OFF) - return; - - pcm_volume(buffer, size, format, pcm_float_to_volume(state->scale)); -} -- cgit v1.2.3