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Diffstat (limited to '')
| -rw-r--r-- | test/test_pcm_volume.c | 190 |
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); +} |