diff options
Diffstat (limited to 'test/test_pcm_pack.c')
-rw-r--r-- | test/test_pcm_pack.c | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/test/test_pcm_pack.c b/test/test_pcm_pack.c new file mode 100644 index 000000000..81bc32575 --- /dev/null +++ b/test/test_pcm_pack.c @@ -0,0 +1,89 @@ +/* + * 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_pack.h" + +#include <glib.h> + +/** + * Generate a random 24 bit PCM sample. + */ +static int32_t +random24(void) +{ + int32_t x = g_random_int() & 0xffffff; + if (x & 0x800000) + x |= 0xff000000; + return x; +} + +void +test_pcm_pack_24(void) +{ + enum { N = 256 }; + int32_t src[N * 3]; + for (unsigned i = 0; i < N; ++i) + src[i] = random24(); + + uint8_t dest[N * 3]; + + pcm_pack_24(dest, src, N, false); + + for (unsigned i = 0; i < N; ++i) { + int32_t d; + if (G_BYTE_ORDER == G_BIG_ENDIAN) + d = (dest[i * 3] << 16) | (dest[i * 3 + 1] << 8) + | dest[i * 3 + 2]; + else + d = (dest[i * 3 + 2] << 16) | (dest[i * 3 + 1] << 8) + | dest[i * 3]; + if (d & 0x800000) + d |= 0xff000000; + + g_assert_cmpint(d, ==, src[i]); + } +} + +void +test_pcm_unpack_24(void) +{ + enum { N = 256 }; + uint8_t src[N * 3]; + for (unsigned i = 0; i < G_N_ELEMENTS(src); ++i) + src[i] = g_random_int_range(0, 256); + + int32_t dest[N]; + + pcm_unpack_24(dest, src, N, false); + + for (unsigned i = 0; i < N; ++i) { + int32_t s; + if (G_BYTE_ORDER == G_BIG_ENDIAN) + s = (src[i * 3] << 16) | (src[i * 3 + 1] << 8) + | src[i * 3 + 2]; + else + s = (src[i * 3 + 2] << 16) | (src[i * 3 + 1] << 8) + | src[i * 3]; + if (s & 0x800000) + s |= 0xff000000; + + g_assert_cmpint(s, ==, dest[i]); + } +} |