diff options
author | Lennart Poettering <lennart@poettering.net> | 2008-04-23 18:19:45 +0000 |
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committer | Lennart Poettering <lennart@poettering.net> | 2008-04-23 18:19:45 +0000 |
commit | a197644ea2cac5e35f2ca6d3d2af149ebedc13ba (patch) | |
tree | eac0e3465da602b95506525eff362a3ed3767f08 | |
parent | f2dffb717d592fb02f009f235e8a05763c500684 (diff) |
add new tool 'stripnul' which can be used to drop leading zeros from a file which is useful to do byte-by-byte comparison of what goes in and comes out of PA
git-svn-id: file:///home/lennart/svn/public/pulseaudio/branches/glitch-free@2307 fefdeb5f-60dc-0310-8127-8f9354f1896f
-rw-r--r-- | src/tests/stripnul.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/src/tests/stripnul.c b/src/tests/stripnul.c new file mode 100644 index 00000000..2f87e877 --- /dev/null +++ b/src/tests/stripnul.c @@ -0,0 +1,72 @@ +/* $Id$ */ + +/*** + This file is part of PulseAudio. + + PulseAudio is free software; you can redistribute it and/or modify + it under the terms of the GNU Lesser General Public License as published + by the Free Software Foundation; either version 2 of the License, + or (at your option) any later version. + + PulseAudio 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 Lesser General Public License + along with PulseAudio; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + USA. +***/ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include <stdio.h> +#include <string.h> +#include <inttypes.h> + +#include <pulse/xmalloc.h> +#include <pulsecore/macro.h> + +int main(int argc, char *argv[]) { + FILE *i, *o; + size_t granularity; + pa_bool_t found; + uint8_t *zero; + + pa_assert_se(argc >= 2); + pa_assert_se((granularity = atoi(argv[1])) >= 1); + pa_assert_se((i = (argc >= 3) ? fopen(argv[2], "r") : stdin)); + pa_assert_se((o = (argc >= 4) ? fopen(argv[3], "w") : stdout)); + + zero = pa_xmalloc0(granularity); + + for (;;) { + uint8_t buffer[16*1024], *p; + size_t k; + + k = fread(buffer, granularity, sizeof(buffer)/granularity, i); + + if (k <= 0) + break; + + if (found) + pa_assert_se(fwrite(buffer, granularity, k, o) == k); + else { + for (p = buffer; (p-buffer)/granularity < k; p += granularity) + if (memcmp(p, zero, granularity)) { + size_t left; + found = TRUE; + left = k - (p-buffer)/granularity; + pa_assert_se(fwrite(p, granularity, left, o) == left); + break; + } + } + } + + fflush(o); + + return 0; +} |