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/* $Id: resampler-test.c 2037 2007-11-09 02:45:07Z lennart $ */
/***
This file is part of PulseAudio.
PulseAudio 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.
PulseAudio 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 PulseAudio; 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 <pulse/sample.h>
#include <pulse/volume.h>
#include <pulsecore/resampler.h>
#include <pulsecore/macro.h>
#include <pulsecore/endianmacros.h>
#include <pulsecore/memblock.h>
#include <pulsecore/sample-util.h>
#include <liboil/liboil.h>
static float swap_float(float a) {
uint32_t *b = (uint32_t*) &a;
*b = PA_UINT32_SWAP(*b);
return a;
}
static void dump_block(const pa_sample_spec *ss, const pa_memchunk *chunk) {
void *d;
unsigned i;
d = pa_memblock_acquire(chunk->memblock);
switch (ss->format) {
case PA_SAMPLE_U8:
case PA_SAMPLE_ULAW:
case PA_SAMPLE_ALAW: {
uint8_t *u = d;
for (i = 0; i < chunk->length / pa_frame_size(ss); i++)
printf("0x%02x ", *(u++));
break;
}
case PA_SAMPLE_S16NE:
case PA_SAMPLE_S16RE: {
uint16_t *u = d;
for (i = 0; i < chunk->length / pa_frame_size(ss); i++)
printf("0x%04x ", *(u++));
break;
}
case PA_SAMPLE_S32NE:
case PA_SAMPLE_S32RE: {
uint32_t *u = d;
for (i = 0; i < chunk->length / pa_frame_size(ss); i++)
printf("0x%08x ", *(u++));
break;
}
case PA_SAMPLE_FLOAT32NE:
case PA_SAMPLE_FLOAT32RE: {
float *u = d;
for (i = 0; i < chunk->length / pa_frame_size(ss); i++) {
printf("%1.5f ", ss->format == PA_SAMPLE_FLOAT32NE ? *u : swap_float(*u));
u++;
}
break;
}
default:
pa_assert_not_reached();
}
printf("\n");
pa_memblock_release(chunk->memblock);
}
static pa_memblock* generate_block(pa_mempool *pool, const pa_sample_spec *ss) {
pa_memblock *r;
void *d;
unsigned i;
pa_assert_se(r = pa_memblock_new(pool, pa_frame_size(ss) * 10));
d = pa_memblock_acquire(r);
switch (ss->format) {
case PA_SAMPLE_U8:
case PA_SAMPLE_ULAW:
case PA_SAMPLE_ALAW: {
uint8_t *u = d;
u[0] = 0x00;
u[1] = 0xFF;
u[2] = 0x7F;
u[3] = 0x80;
u[4] = 0x9f;
u[5] = 0x3f;
u[6] = 0x1;
u[7] = 0xF0;
u[8] = 0x20;
u[9] = 0x21;
break;
}
case PA_SAMPLE_S16NE:
case PA_SAMPLE_S16RE: {
uint16_t *u = d;
u[0] = 0x0000;
u[1] = 0xFFFF;
u[2] = 0x7FFF;
u[3] = 0x8000;
u[4] = 0x9fff;
u[5] = 0x3fff;
u[6] = 0x1;
u[7] = 0xF000;
u[8] = 0x20;
u[9] = 0x21;
break;
}
case PA_SAMPLE_S32NE:
case PA_SAMPLE_S32RE: {
uint32_t *u = d;
u[0] = 0x00000001;
u[1] = 0xFFFF0002;
u[2] = 0x7FFF0003;
u[3] = 0x80000004;
u[4] = 0x9fff0005;
u[5] = 0x3fff0006;
u[6] = 0x10007;
u[7] = 0xF0000008;
u[8] = 0x200009;
u[9] = 0x21000A;
break;
}
case PA_SAMPLE_FLOAT32NE:
case PA_SAMPLE_FLOAT32RE: {
float *u = d;
u[0] = 0.0;
u[1] = -1.0;
u[2] = 1.0;
u[3] = 4711;
u[4] = 0.222;
u[5] = 0.33;
u[6] = -.3;
u[7] = 99;
u[8] = -0.555;
u[9] = -.123;
if (ss->format == PA_SAMPLE_FLOAT32RE)
for (i = 0; i < 10; i++)
u[i] = swap_float(u[i]);
break;
}
default:
pa_assert_not_reached();
}
pa_memblock_release(r);
return r;
}
int main(int argc, char *argv[]) {
pa_mempool *pool;
pa_sample_spec a;
pa_cvolume v;
oil_init();
pa_log_set_maximal_level(PA_LOG_DEBUG);
pa_assert_se(pool = pa_mempool_new(FALSE));
a.channels = 1;
a.rate = 44100;
v.channels = a.channels;
v.values[0] = pa_sw_volume_from_linear(0.9);
for (a.format = 0; a.format < PA_SAMPLE_MAX; a.format ++) {
pa_memchunk i, j, k;
pa_mix_info m[2];
void *ptr;
printf("=== mixing: %s\n", pa_sample_format_to_string(a.format));
/* Generate block */
i.memblock = generate_block(pool, &a);
i.length = pa_memblock_get_length(i.memblock);
i.index = 0;
/* Make a copy */
j = i;
pa_memblock_ref(j.memblock);
pa_memchunk_make_writable(&j, 0);
/* Adjust volume of the copy */
pa_volume_memchunk(&j, &a, &v);
m[0].chunk = i;
m[0].volume.values[0] = PA_VOLUME_NORM;
m[0].volume.channels = a.channels;
m[1].chunk = j;
m[1].volume.values[0] = PA_VOLUME_NORM;
m[1].volume.channels = a.channels;
k.memblock = pa_memblock_new(pool, i.length);
k.length = i.length;
k.index = 0;
ptr = (uint8_t*) pa_memblock_acquire(k.memblock) + k.index;
pa_mix(m, 2, ptr, k.length, &a, NULL, FALSE);
pa_memblock_release(k.memblock);
dump_block(&a, &i);
dump_block(&a, &j);
dump_block(&a, &k);
pa_memblock_unref(i.memblock);
pa_memblock_unref(j.memblock);
pa_memblock_unref(k.memblock);
}
pa_mempool_free(pool);
return 0;
}
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