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-rw-r--r--test/test_pcm_pack.c90
1 files changed, 90 insertions, 0 deletions
diff --git a/test/test_pcm_pack.c b/test/test_pcm_pack.c
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+++ b/test/test_pcm_pack.c
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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_pack.h"
+#include "test_glib_compat.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, 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, src + G_N_ELEMENTS(src), 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]);
+ }
+}