91 lines
2.1 KiB
C
91 lines
2.1 KiB
C
/*
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* Copyright (C) 2003-2011 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "test_pcm_all.h"
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#include "pcm_pack.h"
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#include "test_glib_compat.h"
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#include <glib.h>
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/**
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* Generate a random 24 bit PCM sample.
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*/
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static int32_t
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random24(void)
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{
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int32_t x = g_random_int() & 0xffffff;
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if (x & 0x800000)
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x |= 0xff000000;
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return x;
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}
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void
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test_pcm_pack_24(void)
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{
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enum { N = 256 };
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int32_t src[N * 3];
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for (unsigned i = 0; i < N; ++i)
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src[i] = random24();
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uint8_t dest[N * 3];
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pcm_pack_24(dest, src, src + N);
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for (unsigned i = 0; i < N; ++i) {
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int32_t d;
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if (G_BYTE_ORDER == G_BIG_ENDIAN)
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d = (dest[i * 3] << 16) | (dest[i * 3 + 1] << 8)
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| dest[i * 3 + 2];
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else
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d = (dest[i * 3 + 2] << 16) | (dest[i * 3 + 1] << 8)
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| dest[i * 3];
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if (d & 0x800000)
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d |= 0xff000000;
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g_assert_cmpint(d, ==, src[i]);
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}
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}
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void
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test_pcm_unpack_24(void)
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{
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enum { N = 256 };
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uint8_t src[N * 3];
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for (unsigned i = 0; i < G_N_ELEMENTS(src); ++i)
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src[i] = g_random_int_range(0, 256);
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int32_t dest[N];
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pcm_unpack_24(dest, src, src + G_N_ELEMENTS(src));
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for (unsigned i = 0; i < N; ++i) {
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int32_t s;
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if (G_BYTE_ORDER == G_BIG_ENDIAN)
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s = (src[i * 3] << 16) | (src[i * 3 + 1] << 8)
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| src[i * 3 + 2];
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else
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s = (src[i * 3 + 2] << 16) | (src[i * 3 + 1] << 8)
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| src[i * 3];
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if (s & 0x800000)
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s |= 0xff000000;
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g_assert_cmpint(s, ==, dest[i]);
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}
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}
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