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/***
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("%1.3g ", 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] = 0.0f;
u[1] = -1.0f;
u[2] = 1.0f;
u[3] = 4711.0f;
u[4] = 0.222f;
u[5] = 0.33f;
u[6] = -.3f;
u[7] = 99.0f;
u[8] = -0.555f;
u[9] = -.123f;
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, b;
pa_cvolume v;
oil_init();
pa_log_set_maximal_level(PA_LOG_DEBUG);
pa_assert_se(pool = pa_mempool_new(FALSE));
a.channels = b.channels = 1;
a.rate = b.rate = 44100;
v.channels = a.channels;
v.values[0] = pa_sw_volume_from_linear(0.5);
for (a.format = 0; a.format < PA_SAMPLE_MAX; a.format ++) {
for (b.format = 0; b.format < PA_SAMPLE_MAX; b.format ++) {
pa_resampler *forth, *back;
pa_memchunk i, j, k;
printf("=== %s -> %s -> %s -> /2\n",
pa_sample_format_to_string(a.format),
pa_sample_format_to_string(b.format),
pa_sample_format_to_string(a.format));
pa_assert_se(forth = pa_resampler_new(pool, &a, NULL, &b, NULL, PA_RESAMPLER_AUTO, 0));
pa_assert_se(back = pa_resampler_new(pool, &b, NULL, &a, NULL, PA_RESAMPLER_AUTO, 0));
i.memblock = generate_block(pool, &a);
i.length = pa_memblock_get_length(i.memblock);
i.index = 0;
pa_resampler_run(forth, &i, &j);
pa_resampler_run(back, &j, &k);
dump_block(&a, &i);
dump_block(&b, &j);
dump_block(&a, &k);
pa_memblock_unref(j.memblock);
pa_memblock_unref(k.memblock);
pa_volume_memchunk(&i, &a, &v);
dump_block(&a, &i);
pa_memblock_unref(i.memblock);
pa_resampler_free(forth);
pa_resampler_free(back);
}
}
pa_mempool_free(pool);
return 0;
}
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