aboutsummaryrefslogtreecommitdiffstats
path: root/test/test_pcm_volume.c
diff options
context:
space:
mode:
authorMax Kellermann <max@duempel.org>2012-07-09 23:11:40 +0200
committerMax Kellermann <max@duempel.org>2012-07-10 01:30:02 +0200
commit6dd70926faa3b5f920e9bcf9d2201425a0ac225f (patch)
tree274e53c98d5a4f1e0b2071735a593a5127090e31 /test/test_pcm_volume.c
parent5dfc0918c37c40063b92a55c365ec87e29f0ecef (diff)
downloadmpd-6dd70926faa3b5f920e9bcf9d2201425a0ac225f.tar.gz
mpd-6dd70926faa3b5f920e9bcf9d2201425a0ac225f.tar.xz
mpd-6dd70926faa3b5f920e9bcf9d2201425a0ac225f.zip
test/test_pcm: add pcm_volume tests
Diffstat (limited to '')
-rw-r--r--test/test_pcm_volume.c190
1 files changed, 190 insertions, 0 deletions
diff --git a/test/test_pcm_volume.c b/test/test_pcm_volume.c
new file mode 100644
index 000000000..713645cf1
--- /dev/null
+++ b/test/test_pcm_volume.c
@@ -0,0 +1,190 @@
+/*
+ * Copyright (C) 2003-2012 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_volume.h"
+
+#include <glib.h>
+
+#include <string.h>
+
+void
+test_pcm_volume_8(void)
+{
+ enum { N = 256 };
+ static const int8_t zero[N];
+ int8_t src[N];
+ for (unsigned i = 0; i < N; ++i)
+ src[i] = g_random_int();
+
+ int8_t dest[N];
+
+ memcpy(dest, src, sizeof(src));
+ g_assert_cmpint(pcm_volume(dest, sizeof(dest), SAMPLE_FORMAT_S8,
+ 0), ==, true);
+ g_assert_cmpint(memcmp(dest, zero, sizeof(zero)), ==, 0);
+
+ memcpy(dest, src, sizeof(src));
+ g_assert_cmpint(pcm_volume(dest, sizeof(dest), SAMPLE_FORMAT_S8,
+ PCM_VOLUME_1), ==, true);
+ g_assert_cmpint(memcmp(dest, src, sizeof(src)), ==, 0);
+
+ memcpy(dest, src, sizeof(src));
+ g_assert_cmpint(pcm_volume(dest, sizeof(dest), SAMPLE_FORMAT_S8,
+ PCM_VOLUME_1 / 2), ==, true);
+
+ for (unsigned i = 0; i < N; ++i) {
+ g_assert_cmpint(dest[i], >=, (src[i] - 1) / 2);
+ g_assert_cmpint(dest[i], <=, src[i] / 2 + 1);
+ }
+}
+
+void
+test_pcm_volume_16(void)
+{
+ enum { N = 256 };
+ static const int16_t zero[N];
+ int16_t src[N];
+ for (unsigned i = 0; i < N; ++i)
+ src[i] = g_random_int();
+
+ int16_t dest[N];
+
+ memcpy(dest, src, sizeof(src));
+ g_assert_cmpint(pcm_volume(dest, sizeof(dest), SAMPLE_FORMAT_S16,
+ 0), ==, true);
+ g_assert_cmpint(memcmp(dest, zero, sizeof(zero)), ==, 0);
+
+ memcpy(dest, src, sizeof(src));
+ g_assert_cmpint(pcm_volume(dest, sizeof(dest), SAMPLE_FORMAT_S16,
+ PCM_VOLUME_1), ==, true);
+ g_assert_cmpint(memcmp(dest, src, sizeof(src)), ==, 0);
+
+ memcpy(dest, src, sizeof(src));
+ g_assert_cmpint(pcm_volume(dest, sizeof(dest), SAMPLE_FORMAT_S16,
+ PCM_VOLUME_1 / 2), ==, true);
+
+ for (unsigned i = 0; i < N; ++i) {
+ g_assert_cmpint(dest[i], >=, (src[i] - 1) / 2);
+ g_assert_cmpint(dest[i], <=, src[i] / 2 + 1);
+ }
+}
+
+/**
+ * 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_volume_24(void)
+{
+ enum { N = 256 };
+ static const int32_t zero[N];
+ int32_t src[N];
+ for (unsigned i = 0; i < N; ++i)
+ src[i] = random24();
+
+ int32_t dest[N];
+
+ memcpy(dest, src, sizeof(src));
+ g_assert_cmpint(pcm_volume(dest, sizeof(dest), SAMPLE_FORMAT_S24_P32,
+ 0), ==, true);
+ g_assert_cmpint(memcmp(dest, zero, sizeof(zero)), ==, 0);
+
+ memcpy(dest, src, sizeof(src));
+ g_assert_cmpint(pcm_volume(dest, sizeof(dest), SAMPLE_FORMAT_S24_P32,
+ PCM_VOLUME_1), ==, true);
+ g_assert_cmpint(memcmp(dest, src, sizeof(src)), ==, 0);
+
+ memcpy(dest, src, sizeof(src));
+ g_assert_cmpint(pcm_volume(dest, sizeof(dest), SAMPLE_FORMAT_S24_P32,
+ PCM_VOLUME_1 / 2), ==, true);
+
+ for (unsigned i = 0; i < N; ++i) {
+ g_assert_cmpint(dest[i], >=, (src[i] - 1) / 2);
+ g_assert_cmpint(dest[i], <=, src[i] / 2 + 1);
+ }
+}
+
+void
+test_pcm_volume_32(void)
+{
+ enum { N = 256 };
+ static const int32_t zero[N];
+ int32_t src[N];
+ for (unsigned i = 0; i < N; ++i)
+ src[i] = g_random_int();
+
+ int32_t dest[N];
+
+ memcpy(dest, src, sizeof(src));
+ g_assert_cmpint(pcm_volume(dest, sizeof(dest), SAMPLE_FORMAT_S32,
+ 0), ==, true);
+ g_assert_cmpint(memcmp(dest, zero, sizeof(zero)), ==, 0);
+
+ memcpy(dest, src, sizeof(src));
+ g_assert_cmpint(pcm_volume(dest, sizeof(dest), SAMPLE_FORMAT_S32,
+ PCM_VOLUME_1), ==, true);
+ g_assert_cmpint(memcmp(dest, src, sizeof(src)), ==, 0);
+
+ memcpy(dest, src, sizeof(src));
+ g_assert_cmpint(pcm_volume(dest, sizeof(dest), SAMPLE_FORMAT_S32,
+ PCM_VOLUME_1 / 2), ==, true);
+
+ for (unsigned i = 0; i < N; ++i) {
+ g_assert_cmpint(dest[i], >=, (src[i] - 1) / 2);
+ g_assert_cmpint(dest[i], <=, src[i] / 2 + 1);
+ }
+}
+
+void
+test_pcm_volume_float(void)
+{
+ enum { N = 256 };
+ static const float zero[N];
+ float src[N];
+ for (unsigned i = 0; i < N; ++i)
+ src[i] = g_random_double_range(-1.0, 1.0);
+
+ float dest[N];
+
+ memcpy(dest, src, sizeof(src));
+ g_assert_cmpint(pcm_volume(dest, sizeof(dest), SAMPLE_FORMAT_FLOAT,
+ 0), ==, true);
+ g_assert_cmpint(memcmp(dest, zero, sizeof(zero)), ==, 0);
+
+ memcpy(dest, src, sizeof(src));
+ g_assert_cmpint(pcm_volume(dest, sizeof(dest), SAMPLE_FORMAT_FLOAT,
+ PCM_VOLUME_1), ==, true);
+ g_assert_cmpint(memcmp(dest, src, sizeof(src)), ==, 0);
+
+ memcpy(dest, src, sizeof(src));
+ g_assert_cmpint(pcm_volume(dest, sizeof(dest), SAMPLE_FORMAT_FLOAT,
+ PCM_VOLUME_1 / 2), ==, true);
+
+ for (unsigned i = 0; i < N; ++i)
+ g_assert_cmpfloat(dest[i], ==, src[i] / 2);
+}