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authorMax Kellermann <max@duempel.org>2010-02-14 17:04:39 +0100
committerMax Kellermann <max@duempel.org>2010-02-17 07:23:13 +0100
commit752dfb3d95482c562e5d24c6ea839c4815de9a6d (patch)
tree46b62f26c4c68ebe81b72b9ca30366ffa14af1a5 /src/replay_gain_state.c
parent5e0117b4441f257fcb1aab48b42a787567ebcbe6 (diff)
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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.
Diffstat (limited to 'src/replay_gain_state.c')
-rw-r--r--src/replay_gain_state.c117
1 files changed, 0 insertions, 117 deletions
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 <glib.h>
-
-#include <assert.h>
-
-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));
-}