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authorDaniel Seuthe <daniel@timmy.seuthe.homelinux.net>2009-06-19 09:02:12 +0200
committerMax Kellermann <max@duempel.org>2009-06-25 08:36:35 +0200
commit4ffd9bce5a9a12a03ecaecac7c0861e5f692d9e3 (patch)
treec3493e46ac13cb6f7c9a7dfee038ce2f52659c96 /src/replay_gain.c
parentf16d05c633971794e49635d5e16ee0ce864032a6 (diff)
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Preamp for missing replay-gain
Diffstat (limited to '')
-rw-r--r--src/replay_gain.c47
1 files changed, 38 insertions, 9 deletions
diff --git a/src/replay_gain.c b/src/replay_gain.c
index bcb501e54..d21b94e0a 100644
--- a/src/replay_gain.c
+++ b/src/replay_gain.c
@@ -38,6 +38,7 @@ static const char *const replay_gain_mode_names[] = {
enum replay_gain_mode replay_gain_mode = REPLAY_GAIN_OFF;
static float replay_gain_preamp = 1.0;
+static float replay_gain_missing_preamp = 1.0;
void replay_gain_global_init(void)
{
@@ -73,6 +74,25 @@ void replay_gain_global_init(void)
replay_gain_preamp = pow(10, f / 20.0);
}
+
+ param = config_get_param(CONF_REPLAYGAIN_MISSING_PREAMP);
+
+ if (param) {
+ char *test;
+ float f = strtod(param->value, &test);
+
+ if (*test != '\0') {
+ g_error("Replaygain missing preamp \"%s\" is not a number at "
+ "line %i\n", param->value, param->line);
+ }
+
+ if (f < -15 || f > 15) {
+ g_error("Replaygain missing preamp \"%s\" is not between -15 and"
+ "15 at line %i\n", param->value, param->line);
+ }
+
+ replay_gain_missing_preamp = pow(10, f / 20.0);
+ }
}
static float calc_replay_gain_scale(float gain, float peak)
@@ -116,19 +136,28 @@ void
replay_gain_apply(struct replay_gain_info *info, char *buffer, int size,
const struct audio_format *format)
{
- if (replay_gain_mode == REPLAY_GAIN_OFF || !info)
+ float scale;
+
+ if (replay_gain_mode == REPLAY_GAIN_OFF)
return;
- if (info->scale < 0) {
- const struct replay_gain_tuple *tuple =
- &info->tuples[replay_gain_mode];
+ if (info) {
+ if (info->scale < 0) {
+ const struct replay_gain_tuple *tuple =
+ &info->tuples[replay_gain_mode];
- g_debug("computing ReplayGain %s scale with gain %f, peak %f\n",
- replay_gain_mode_names[replay_gain_mode],
- tuple->gain, tuple->peak);
+ g_debug("computing ReplayGain %s scale with gain %f, peak %f\n",
+ replay_gain_mode_names[replay_gain_mode],
+ tuple->gain, tuple->peak);
- info->scale = calc_replay_gain_scale(tuple->gain, tuple->peak);
+ info->scale = calc_replay_gain_scale(tuple->gain, tuple->peak);
+ }
+ scale = info->scale;
+ }
+ else {
+ scale = replay_gain_missing_preamp;
+ g_debug("ReplayGain is missing, computing scale %f\n", scale);
}
- pcm_volume(buffer, size, format, pcm_float_to_volume(info->scale));
+ pcm_volume(buffer, size, format, pcm_float_to_volume(scale));
}