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-rw-r--r--src/sample-util.c144
1 files changed, 0 insertions, 144 deletions
diff --git a/src/sample-util.c b/src/sample-util.c
deleted file mode 100644
index d608ce1b..00000000
--- a/src/sample-util.c
+++ /dev/null
@@ -1,144 +0,0 @@
-/* $Id$ */
-
-/***
- This file is part of polypaudio.
-
- polypaudio 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.
-
- polypaudio 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 polypaudio; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
- USA.
-***/
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include <stdio.h>
-#include <string.h>
-#include <assert.h>
-
-#include "sample-util.h"
-
-struct pa_memblock *pa_silence_memblock(struct pa_memblock* b, const struct pa_sample_spec *spec) {
- assert(b && b->data && spec);
- pa_silence_memory(b->data, b->length, spec);
- return b;
-}
-
-void pa_silence_memchunk(struct pa_memchunk *c, const struct pa_sample_spec *spec) {
- assert(c && c->memblock && c->memblock->data && spec && c->length);
- pa_silence_memory(c->memblock->data+c->index, c->length, spec);
-}
-
-void pa_silence_memory(void *p, size_t length, const struct pa_sample_spec *spec) {
- char c = 0;
- assert(p && length && spec);
-
- switch (spec->format) {
- case PA_SAMPLE_U8:
- c = 127;
- break;
- case PA_SAMPLE_S16LE:
- case PA_SAMPLE_S16BE:
- case PA_SAMPLE_FLOAT32:
- c = 0;
- break;
- case PA_SAMPLE_ALAW:
- case PA_SAMPLE_ULAW:
- c = 80;
- break;
- default:
- assert(0);
- }
-
- memset(p, c, length);
-}
-
-size_t pa_mix(struct pa_mix_info channels[], unsigned nchannels, void *data, size_t length, const struct pa_sample_spec *spec, uint32_t volume) {
- unsigned c, d;
- assert(channels && data && length && spec);
- assert(spec->format == PA_SAMPLE_S16NE);
-
- for (d = 0;; d += sizeof(int16_t)) {
- int32_t sum = 0;
-
- if (d >= length)
- return d;
-
- for (c = 0; c < nchannels; c++) {
- int32_t v;
- uint32_t volume = channels[c].volume;
-
- if (d >= channels[c].chunk.length)
- return d;
-
- if (volume == PA_VOLUME_MUTE)
- v = 0;
- else {
- v = *((int16_t*) (channels[c].chunk.memblock->data + channels[c].chunk.index + d));
-
- if (volume != PA_VOLUME_NORM)
- v = (int32_t) ((float)v*volume/PA_VOLUME_NORM);
- }
-
- sum += v;
- }
-
- if (volume == PA_VOLUME_MUTE)
- sum = 0;
- else if (volume != PA_VOLUME_NORM)
- sum = (int32_t) ((float) sum*volume/PA_VOLUME_NORM);
-
- if (sum < -0x8000) sum = -0x8000;
- if (sum > 0x7FFF) sum = 0x7FFF;
-
- *((int16_t*) data) = sum;
- data += sizeof(int16_t);
- }
-}
-
-
-void pa_volume_memchunk(struct pa_memchunk*c, const struct pa_sample_spec *spec, uint32_t volume) {
- int16_t *d;
- size_t n;
- assert(c && spec && (c->length % pa_sample_size(spec) == 0));
- assert(spec->format == PA_SAMPLE_S16NE);
-
- if (volume == PA_VOLUME_NORM)
- return;
-
- if (volume == PA_VOLUME_MUTE) {
- pa_silence_memchunk(c, spec);
- return;
- }
-
- for (d = (c->memblock->data+c->index), n = c->length/sizeof(int16_t); n > 0; d++, n--) {
- int32_t t = (int32_t)(*d);
-
- t *= volume;
- t /= PA_VOLUME_NORM;
-
- if (t < -0x8000) t = -0x8000;
- if (t > 0x7FFF) t = 0x7FFF;
-
- *d = (int16_t) t;
- }
-}
-
-uint32_t pa_volume_multiply(uint32_t a, uint32_t b) {
- uint64_t p = a;
- p *= b;
- p /= PA_VOLUME_NORM;
-
- return (uint32_t) p;
-}