diff options
Diffstat (limited to '')
-rw-r--r-- | src/replay_gain.c | 61 |
1 files changed, 31 insertions, 30 deletions
diff --git a/src/replay_gain.c b/src/replay_gain.c index 094c1c4f7..b9b2fe276 100644 --- a/src/replay_gain.c +++ b/src/replay_gain.c @@ -26,11 +26,11 @@ #include "os_compat.h" /* Added 4/14/2004 by AliasMrJones */ -int replayGainState = REPLAYGAIN_OFF; +int replay_gain_mode = REPLAY_GAIN_OFF; -static float replayGainPreamp = 1.0; +static float replay_gain_preamp = 1.0; -void initReplayGainState(void) +void replay_gain_global_init(void) { ConfigParam *param = getConfigParam(CONF_REPLAYGAIN); @@ -38,9 +38,9 @@ void initReplayGainState(void) return; if (strcmp(param->value, "track") == 0) { - replayGainState = REPLAYGAIN_TRACK; + replay_gain_mode = REPLAY_GAIN_TRACK; } else if (strcmp(param->value, "album") == 0) { - replayGainState = REPLAYGAIN_ALBUM; + replay_gain_mode = REPLAY_GAIN_ALBUM; } else { FATAL("replaygain value \"%s\" at line %i is invalid\n", param->value, param->line); @@ -62,18 +62,18 @@ void initReplayGainState(void) "15 at line %i\n", param->value, param->line); } - replayGainPreamp = pow(10, f / 20.0); + replay_gain_preamp = pow(10, f / 20.0); } } -static float computeReplayGainScale(float gain, float peak) +static float calc_replay_gain_scale(float gain, float peak) { float scale; if (gain == 0.0) return (1); scale = pow(10.0, gain / 20.0); - scale *= replayGainPreamp; + scale *= replay_gain_preamp; if (scale > 15.0) scale = 15.0; @@ -83,28 +83,29 @@ static float computeReplayGainScale(float gain, float peak) return (scale); } -ReplayGainInfo *newReplayGainInfo(void) +struct replay_gain_info *replay_gain_info_new(void) { - ReplayGainInfo *ret = xmalloc(sizeof(ReplayGainInfo)); + struct replay_gain_info *ret = xmalloc(sizeof(*ret)); - ret->albumGain = 0.0; - ret->albumPeak = 0.0; + ret->album_gain = 0.0; + ret->album_peak = 0.0; - ret->trackGain = 0.0; - ret->trackPeak = 0.0; + ret->track_gain = 0.0; + ret->track_peak = 0.0; - /* set to -1 so that we know in doReplayGain to compute the scale */ + /* set to -1 so that we know in replay_gain_apply to compute the scale */ ret->scale = -1.0; return ret; } -void freeReplayGainInfo(ReplayGainInfo * info) +void replay_gain_info_free(struct replay_gain_info *info) { free(info); } -void doReplayGain(ReplayGainInfo * info, char *buffer, int bufferSize, +void +replay_gain_apply(struct replay_gain_info *info, char *buffer, int size, const struct audio_format *format) { int16_t *buffer16; @@ -112,22 +113,22 @@ void doReplayGain(ReplayGainInfo * info, char *buffer, int bufferSize, int32_t temp32; float scale; - if (replayGainState == REPLAYGAIN_OFF || !info) + if (replay_gain_mode == REPLAY_GAIN_OFF || !info) return; if (info->scale < 0) { - switch (replayGainState) { - case REPLAYGAIN_TRACK: + switch (replay_gain_mode) { + case REPLAY_GAIN_TRACK: DEBUG("computing ReplayGain track scale with gain %f, " - "peak %f\n", info->trackGain, info->trackPeak); - info->scale = computeReplayGainScale(info->trackGain, - info->trackPeak); + "peak %f\n", info->track_gain, info->track_peak); + info->scale = calc_replay_gain_scale(info->track_gain, + info->track_peak); break; default: DEBUG("computing ReplayGain album scale with gain %f, " - "peak %f\n", info->albumGain, info->albumPeak); - info->scale = computeReplayGainScale(info->albumGain, - info->albumPeak); + "peak %f\n", info->album_gain, info->album_peak); + info->scale = calc_replay_gain_scale(info->album_gain, + info->album_peak); break; } } @@ -142,23 +143,23 @@ void doReplayGain(ReplayGainInfo * info, char *buffer, int bufferSize, switch (format->bits) { case 16: - while (bufferSize > 0) { + while (size > 0) { temp32 = *buffer16; temp32 *= scale; *buffer16 = temp32 > 32767 ? 32767 : (temp32 < -32768 ? -32768 : temp32); buffer16++; - bufferSize -= 2; + size -= 2; } break; case 8: - while (bufferSize > 0) { + while (size > 0) { temp32 = *buffer8; temp32 *= scale; *buffer8 = temp32 > 127 ? 127 : (temp32 < -128 ? -128 : temp32); buffer8++; - bufferSize--; + size--; } break; default: |