/* * 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 "test_glib_compat.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); }