ref: 2b1a8636761cd1516ecdb90090d28a399ee5c10c
parent: 5443fca9c59d7e385695a23e12e2e410660d8ce7
author: robs <robs>
date: Wed Sep 17 02:10:43 EDT 2008
allow longer effect help
--- a/src/effects_i.c
+++ b/src/effects_i.c
@@ -38,6 +38,21 @@
return SOX_EOF;
}
+char * lsx_usage_lines(char * * usage, char const * const * lines, size_t n)
+{+ if (!*usage) {+ size_t i, len;
+ for (len = i = 0; i < n; len += strlen(lines[i++]) + 1);
+ *usage = lsx_malloc(len);
+ strcpy(*usage, lines[0]);
+ for (i = 1; i < n; ++i) {+ strcat(*usage, "\n");
+ strcat(*usage, lines[i]);
+ }
+ }
+ return *usage;
+}
+
/* here for linear interp. might be useful for other things */
unsigned lsx_gcd(unsigned a, unsigned b)
{--- a/src/sox_i.h
+++ b/src/sox_i.h
@@ -196,6 +196,7 @@
/*--------------------------------- Effects ----------------------------------*/
int lsx_usage(sox_effect_t * effp);
+char * lsx_usage_lines(char * * usage, char const * const * lines, size_t n);
#define EFFECT(f) extern sox_effect_handler_t const * sox_##f##_effect_fn(void);
#include "effects.h"
#undef EFFECT
--- a/src/spectrogram.c
+++ b/src/spectrogram.c
@@ -509,22 +509,26 @@
sox_effect_handler_t const * sox_spectrogram_effect_fn(void)
{ static sox_effect_handler_t handler = {- "spectrogram", "[options]\n"
- "\t-x num\tX-axis pixels/second, default 100\n"
- "\t-y num\tY-axis resolution (1 - 4), default 2\n"
- "\t-z num\tZ-axis range in dB, default 120\n"
- "\t-Z num\tZ-axis maximum in dBFS, default 0\n"
- "\t-q num\tZ-axis quantisation, default 249\n"
- "\t-w name\tWindow: Hann (default), Hamming, Bartlett, Rectangular, Kaiser\n"
- "\t-s\tSlack overlap\n"
- "\t-a\tSuppress axis lines\n"
- "\t-l\tLight background\n"
- "\t-m\tMonochrome\n"
- "\t-h\tHigh colour\n"
- "\t-p num\tPermute colours\n"
- "\t-t text\tTitle text\n"
- "\t-c text\tComment text\n"
- "\t-o text\tOutput file name, default `spectrogram.png'",
- 0, getopts, start, flow, drain, stop, NULL, sizeof(priv_t)};
+ "spectrogram", 0, 0, getopts, start, flow, drain, stop, 0, sizeof(priv_t)};
+ static char const * lines[] = {+ "[options]",
+ "\t-x num\tX-axis pixels/second, default 100",
+ "\t-y num\tY-axis resolution (1 - 4), default 2",
+ "\t-z num\tZ-axis range in dB, default 120",
+ "\t-Z num\tZ-axis maximum in dBFS, default 0",
+ "\t-q num\tZ-axis quantisation (0 - 249), default 249",
+ "\t-w name\tWindow: Hann (default), Hamming, Bartlett, Rectangular, Kaiser",
+ "\t-s\tSlack overlap of windows",
+ "\t-a\tSuppress axis lines",
+ "\t-l\tLight background",
+ "\t-m\tMonochrome",
+ "\t-h\tHigh colour",
+ "\t-p num\tPermute colours (1 - 6)",
+ "\t-t text\tTitle text",
+ "\t-c text\tComment text",
+ "\t-o text\tOutput file name, default `spectrogram.png'",
+ };
+ static char * usage;
+ handler.usage = lsx_usage_lines(&usage, lines, array_length(lines));
return &handler;
}