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/*
* Copyright (C) 2003-2011 The Music Player Daemon Project
* http://www.musicpd.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "test_pcm_all.h"
#include "pcm_channels.h"
#include "pcm_buffer.h"
#include <glib.h>
void
test_pcm_channels_16(void)
{
enum { N = 256 };
int16_t src[N * 2];
for (unsigned i = 0; i < G_N_ELEMENTS(src); ++i)
src[i] = g_random_int();
struct pcm_buffer buffer;
pcm_buffer_init(&buffer);
/* stereo to mono */
size_t dest_size;
const int16_t *dest =
pcm_convert_channels_16(&buffer, 1, 2, src, sizeof(src),
&dest_size);
g_assert(dest != NULL);
g_assert_cmpint(dest_size, ==, sizeof(src) / 2);
for (unsigned i = 0; i < N; ++i)
g_assert_cmpint(dest[i], ==,
(src[i * 2] + src[i * 2 + 1]) / 2);
/* mono to stereo */
dest = pcm_convert_channels_16(&buffer, 2, 1, src, sizeof(src),
&dest_size);
g_assert(dest != NULL);
g_assert_cmpint(dest_size, ==, sizeof(src) * 2);
for (unsigned i = 0; i < N; ++i) {
g_assert_cmpint(dest[i * 2], ==, src[i]);
g_assert_cmpint(dest[i * 2 + 1], ==, src[i]);
}
pcm_buffer_deinit(&buffer);
}
void
test_pcm_channels_32(void)
{
enum { N = 256 };
int32_t src[N * 2];
for (unsigned i = 0; i < G_N_ELEMENTS(src); ++i)
src[i] = g_random_int();
struct pcm_buffer buffer;
pcm_buffer_init(&buffer);
/* stereo to mono */
size_t dest_size;
const int32_t *dest =
pcm_convert_channels_32(&buffer, 1, 2, src, sizeof(src),
&dest_size);
g_assert(dest != NULL);
g_assert_cmpint(dest_size, ==, sizeof(src) / 2);
for (unsigned i = 0; i < N; ++i)
g_assert_cmpint(dest[i], ==,
((int64_t)src[i * 2] + (int64_t)src[i * 2 + 1]) / 2);
/* mono to stereo */
dest = pcm_convert_channels_32(&buffer, 2, 1, src, sizeof(src),
&dest_size);
g_assert(dest != NULL);
g_assert_cmpint(dest_size, ==, sizeof(src) * 2);
for (unsigned i = 0; i < N; ++i) {
g_assert_cmpint(dest[i * 2], ==, src[i]);
g_assert_cmpint(dest[i * 2 + 1], ==, src[i]);
}
pcm_buffer_deinit(&buffer);
}
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