mirror of
https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git
synced 2025-11-04 13:29:59 -05:00
Reorganised the source tree. We now have src/ with a couple of subdirs:
* daemon/ - Contains the files specific to the polypaudio daemon. * modules/ - All loadable modules. * polyp/ - Files that are part of the public, application interface or are only used in libpolyp. * polypcore/ - All other shared files. * tests/ - Test programs. * utils/ - Utility programs. git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@487 fefdeb5f-60dc-0310-8127-8f9354f1896f
This commit is contained in:
Pierre Ossman
parent
5b881e6228
commit
e205b25d65
246 changed files with 724 additions and 689 deletions
328
src/polypcore/sample-util.c
Normal file
328
src/polypcore/sample-util.c
Normal file
|
|
@ -0,0 +1,328 @@
|
|||
/* $Id$ */
|
||||
|
||||
/***
|
||||
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();
|
||||
}
|
||||
}
|
||||
|
||||
Loading…
Add table
Add a link
Reference in a new issue