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-rw-r--r--polyp/sample-util.c328
1 files changed, 0 insertions, 328 deletions
diff --git a/polyp/sample-util.c b/polyp/sample-util.c
deleted file mode 100644
index 52974c46..00000000
--- a/polyp/sample-util.c
+++ /dev/null
@@ -1,328 +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 Lesser 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 Lesser 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 <stdlib.h>
-
-#include <liboil/liboilfuncs.h>
-
-#include "log.h"
-#include "sample-util.h"
-
-pa_memblock *pa_silence_memblock(pa_memblock* b, const pa_sample_spec *spec) {
- assert(b && b->data && spec);
- pa_silence_memory(b->data, b->length, spec);
- return b;
-}
-
-void pa_silence_memchunk(pa_memchunk *c, const pa_sample_spec *spec) {
- assert(c && c->memblock && c->memblock->data && spec && c->length);
-
- pa_silence_memory((uint8_t*) c->memblock->data+c->index, c->length, spec);
-}
-
-void pa_silence_memory(void *p, size_t length, const pa_sample_spec *spec) {
- uint8_t c = 0;
- assert(p && length && spec);
-
- switch (spec->format) {
- case PA_SAMPLE_U8:
- c = 0x80;
- 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(
- const pa_mix_info streams[],
- unsigned nstreams,
- void *data,
- size_t length,
- const pa_sample_spec *spec,
- const pa_cvolume *volume) {
-
- assert(streams && data && length && spec);
-
- switch (spec->format) {
- case PA_SAMPLE_S16NE:{
- size_t d;
- unsigned channel = 0;
-
- for (d = 0;; d += sizeof(int16_t)) {
- int32_t sum = 0;
-
- if (d >= length)
- return d;
-
- if (volume->values[channel] != PA_VOLUME_MUTED) {
- unsigned i;
-
- for (i = 0; i < nstreams; i++) {
- int32_t v;
- pa_volume_t cvolume = streams[i].volume.values[channel];
-
- if (d >= streams[i].chunk.length)
- return d;
-
- if (cvolume == PA_VOLUME_MUTED)
- v = 0;
- else {
- v = *((int16_t*) ((uint8_t*) streams[i].chunk.memblock->data + streams[i].chunk.index + d));
-
- if (cvolume != PA_VOLUME_NORM) {
- v *= cvolume;
- v /= PA_VOLUME_NORM;
- }
- }
-
- sum += v;
- }
-
- if (volume->values[channel] != PA_VOLUME_NORM) {
- sum *= volume->values[channel];
- sum /= PA_VOLUME_NORM;
- }
-
- if (sum < -0x8000) sum = -0x8000;
- if (sum > 0x7FFF) sum = 0x7FFF;
-
- }
-
- *((int16_t*) data) = sum;
- data = (uint8_t*) data + sizeof(int16_t);
-
- if (++channel >= spec->channels)
- channel = 0;
- }
- }
-
- case PA_SAMPLE_U8: {
- size_t d;
- unsigned channel = 0;
-
- for (d = 0;; d ++) {
- int32_t sum = 0;
-
- if (d >= length)
- return d;
-
- if (volume->values[channel] != PA_VOLUME_MUTED) {
- unsigned i;
-
- for (i = 0; i < nstreams; i++) {
- int32_t v;
- pa_volume_t cvolume = streams[i].volume.values[channel];
-
- if (d >= streams[i].chunk.length)
- return d;
-
- if (cvolume == PA_VOLUME_MUTED)
- v = 0;
- else {
- v = (int32_t) *((uint8_t*) streams[i].chunk.memblock->data + streams[i].chunk.index + d) - 0x80;
-
- if (cvolume != PA_VOLUME_NORM) {
- v *= cvolume;
- v /= PA_VOLUME_NORM;
- }
- }
-
- sum += v;
- }
-
- if (volume->values[channel] != PA_VOLUME_NORM) {
- sum *= volume->values[channel];
- sum /= PA_VOLUME_NORM;
- }
-
- if (sum < -0x80) sum = -0x80;
- if (sum > 0x7F) sum = 0x7F;
-
- }
-
- *((uint8_t*) data) = (uint8_t) (sum + 0x80);
- data = (uint8_t*) data + 1;
-
- if (++channel >= spec->channels)
- channel = 0;
- }
- }
-
- case PA_SAMPLE_FLOAT32NE: {
- size_t d;
- unsigned channel = 0;
-
- for (d = 0;; d += sizeof(float)) {
- float sum = 0;
-
- if (d >= length)
- return d;
-
- if (volume->values[channel] != PA_VOLUME_MUTED) {
- unsigned i;
-
- for (i = 0; i < nstreams; i++) {
- float v;
- pa_volume_t cvolume = streams[i].volume.values[channel];
-
- if (d >= streams[i].chunk.length)
- return d;
-
- if (cvolume == PA_VOLUME_MUTED)
- v = 0;
- else {
- v = *((float*) ((uint8_t*) streams[i].chunk.memblock->data + streams[i].chunk.index + d));
-
- if (cvolume != PA_VOLUME_NORM) {
- v *= cvolume;
- v /= PA_VOLUME_NORM;
- }
- }
-
- sum += v;
- }
-
- if (volume->values[channel] != PA_VOLUME_NORM) {
- sum *= volume->values[channel];
- sum /= PA_VOLUME_NORM;
- }
- }
-
- *((float*) data) = sum;
- data = (uint8_t*) data + sizeof(float);
-
- if (++channel >= spec->channels)
- channel = 0;
- }
- }
-
- default:
- abort();
- }
-}
-
-
-void pa_volume_memchunk(pa_memchunk*c, const pa_sample_spec *spec, const pa_cvolume *volume) {
- assert(c && spec && (c->length % pa_frame_size(spec) == 0));
- assert(volume);
-
- if (pa_cvolume_channels_equal_to(volume, PA_VOLUME_NORM))
- return;
-
- if (pa_cvolume_channels_equal_to(volume, PA_VOLUME_MUTED)) {
- pa_silence_memchunk(c, spec);
- return;
- }
-
- switch (spec->format) {
- case PA_SAMPLE_S16NE: {
- int16_t *d;
- size_t n;
- unsigned channel = 0;
-
- for (d = (int16_t*) ((uint8_t*) c->memblock->data+c->index), n = c->length/sizeof(int16_t); n > 0; d++, n--) {
- int32_t t = (int32_t)(*d);
-
- t *= volume->values[channel];
- t /= PA_VOLUME_NORM;
-
- if (t < -0x8000) t = -0x8000;
- if (t > 0x7FFF) t = 0x7FFF;
-
- *d = (int16_t) t;
-
- if (++channel >= spec->channels)
- channel = 0;
- }
- break;
- }
-
- case PA_SAMPLE_U8: {
- uint8_t *d;
- size_t n;
- unsigned channel = 0;
-
- for (d = (uint8_t*) c->memblock->data + c->index, n = c->length; n > 0; d++, n--) {
- int32_t t = (int32_t) *d - 0x80;
-
- t *= volume->values[channel];
- t /= PA_VOLUME_NORM;
-
- if (t < -0x80) t = -0x80;
- if (t > 0x7F) t = 0x7F;
-
- *d = (uint8_t) (t + 0x80);
-
- if (++channel >= spec->channels)
- channel = 0;
- }
- break;
- }
-
- case PA_SAMPLE_FLOAT32NE: {
- float *d;
- int skip;
- unsigned n;
- unsigned channel;
-
- d = (float*) ((uint8_t*) c->memblock->data + c->index);
- skip = spec->channels * sizeof(float);
- n = c->length/sizeof(float)/spec->channels;
-
- for (channel = 0; channel < spec->channels ; channel ++) {
- float v, *t;
-
- if (volume->values[channel] == PA_VOLUME_NORM)
- continue;
-
- v = (float) volume->values[channel] / PA_VOLUME_NORM;
-
- t = d + channel;
- oil_scalarmult_f32(t, skip, t, skip, &v, n);
- }
- break;
- }
-
- default:
- pa_log_error(__FILE__": ERROR: Unable to change volume of format %s.\n",
- pa_sample_format_to_string(spec->format));
- abort();
- }
-}
-
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