-/*
- * Copyright (C) 2005 Andre Noll <maan@tuebingen.mpg.de>
- *
- * Licensed under the GPL v2. For licencing details see COPYING.
- */
+/* Copyright (C) 2005 Andre Noll <maan@tuebingen.mpg.de>, see file COPYING. */
/** \file compress_filter.c Paraslash's dynamic audio range compressor. */
int16_t *ip, *op;
uint32_t inertia = U32_OPTVAL(INERTIA, fn->lpr);
unsigned gain_shift = inertia + U32_OPTVAL(DAMP, fn->lpr),
- mask = (1 << U32_OPTVAL(BLOCKSIZE, fn->lpr)) - 1;
+ mask = (1U << U32_OPTVAL(BLOCKSIZE, fn->lpr)) - 1U;
//inplace = false;
next_buffer:
ret = btr_node_status(btrn, fn->min_iqs, BTR_NT_INTERNAL);
sample *= pcd->current_gain;
sample >>= gain_shift;
if (sample > 32767) { /* clip */
+ PARA_WARNING_LOG("clip: %d\n", sample);
sample = 32767;
pcd->current_gain = (3 * pcd->current_gain +
(1 << inertia)) / 4;
pcd->max_gain = 1U << (inertia + aggressiveness);
}
+static void *compress_setup(const struct lls_parse_result *lpr)
+{
+ uint32_t val;
+
+ val = U32_OPTVAL(BLOCKSIZE, lpr);
+ if (val == 0 || val > 31) {
+ PARA_EMERG_LOG("blocksize (%u) out of range\n", val);
+ exit(EXIT_FAILURE);
+ }
+ val = U32_OPTVAL(AGGRESSIVENESS, lpr);
+ if (val == 0 || val > 15) {
+ PARA_EMERG_LOG("aggressiveness (%u) out of range\n", val);
+ exit(EXIT_FAILURE);
+ }
+ val = U32_OPTVAL(INERTIA, lpr);
+ if (val == 0 || val > 15) {
+ PARA_EMERG_LOG("inertia (%u) out of range\n", val);
+ exit(EXIT_FAILURE);
+ }
+ val = U32_OPTVAL(AGGRESSIVENESS, lpr) + U32_OPTVAL(INERTIA, lpr);
+ if (val > 16) {
+ PARA_EMERG_LOG("inertia + aggressiveness (%u) > 16\n", val);
+ exit(EXIT_FAILURE);
+ }
+ val = U32_OPTVAL(TARGET_LEVEL, lpr);
+ if (val > 32767) {
+ PARA_EMERG_LOG("target-level (%u) out of range\n", val);
+ exit(EXIT_FAILURE);
+ }
+ val = U32_OPTVAL(DAMP, lpr);
+ if (val > 16) {
+ PARA_EMERG_LOG("damp (%u) out of range\n", val);
+ exit(EXIT_FAILURE);
+ }
+ return NULL; /* no need for a config structure */
+}
+
const struct filter lsg_filter_cmd_com_compress_user_data = {
+ .setup = compress_setup,
.open = compress_open,
.close = compress_close,
.pre_select = generic_filter_pre_select,