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-rw-r--r--src/tests/resampler-test.c227
1 files changed, 227 insertions, 0 deletions
diff --git a/src/tests/resampler-test.c b/src/tests/resampler-test.c
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+++ b/src/tests/resampler-test.c
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+/* $Id$ */
+
+/***
+ 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_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_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, 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, FALSE));
+ pa_assert_se(back = pa_resampler_new(pool, &b, NULL, &a, NULL, PA_RESAMPLER_AUTO, FALSE));
+
+ 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;
+}