Add option to set the default pan amplitude

Signed-off-by: Claudio Matsuoka <cmatsuoka@gmail.com>

Changelog

@@ -1,6 +1,9 @@
 Stable versions
 ---------------
 
+4.0.9:
+	- Add option '-p' to set the default pan amplitude
+
 4.0.8 (20140714):
 	- Add command 'c' to display module comment
 	- Add command-line option -C to display module comment

configure.ac

@@ -28,7 +28,7 @@ esac
 AC_PROG_INSTALL
 AM_INIT_AUTOMAKE([foreign subdir-objects tar-pax])
 
-PKG_CHECK_MODULES([libxmp], [libxmp >= 4.1])
+PKG_CHECK_MODULES([libxmp], [libxmp >= 4.3])
 
 dnl Don't use things like /usr/etc or /usr/var
 

src/common.h

@@ -24,6 +24,7 @@ struct options {
 	int format;		/* sample format */
 	int max_time;		/* max. replay time */
 	int mix;		/* channel separation */
+	int defpan;		/* default pan */
 	int interp;		/* interpolation type */
 	int dsp;		/* dsp effects */
 	int loop;		/* loop module */

src/main.c

@@ -221,6 +221,7 @@ int main(int argc, char **argv)
 	opt.verbose = 1;
 	opt.rate = 44100;
 	opt.mix = -1;
+	opt.defpan = 100;
 	opt.driver_id = NULL;
 	opt.interp = XMP_INTERP_SPLINE;
 	opt.dsp = XMP_DSP_LOWPASS;
@@ -333,6 +334,8 @@ int main(int argc, char **argv)
 				argv[optind], optind - first + 1, argc - first);
 		}
 
+		xmp_set_player(xc, XMP_PLAYER_DEFPAN, opt.defpan);
+
 		/* load module */
 
 		val = xmp_load_module(xc, argv[optind]);

src/options.c

@@ -90,6 +90,7 @@ static void usage(char *s)
 "   -F --nofilter          Disable IT lowpass filters\n"
 "   -o --output-file name  Mix the module to file ('-' for stdout)\n"
 "   -P --pan pan           Percentual pan separation\n"
+"   -p --default-pan       Percentual default pan setting\n"
 "   -r --reverse           Reverse left/right stereo channels\n"
 "   -u --unsigned          Set the mixer to use unsigned samples\n"
 "\nEnvironment options:\n"
@@ -109,6 +110,7 @@ static const struct option lopt[] = {
 	{ "amplify",		1, 0, 'a' },
 	{ "bits",		1, 0, 'b' },
 	{ "driver",		1, 0, 'd' },
+	{ "default-pan",	1, 0, 'p' },
 	{ "fix-sample-loops",	0, 0, OPT_FIXLOOP },
 	{ "frequency",		1, 0, 'f' },
 	{ "help",		0, 0, 'h' },
@@ -151,7 +153,7 @@ void get_options(int argc, char **argv, struct options *options)
 	int optidx = 0;
 	int o;
 
-#define OPTIONS "a:b:CcD:d:Ff:hI:i:LlM:mNo:P:qRrS:s:T:t:uVvZz:"
+#define OPTIONS "a:b:CcD:d:Ff:hI:i:LlM:mNo:P:p:qRrS:s:T:t:uVvZz:"
 	while ((o = getopt_long(argc, argv, OPTIONS, lopt, &optidx)) != -1) {
 		switch (o) {
 		case 'a':
@@ -249,6 +251,13 @@ void get_options(int argc, char **argv, struct options *options)
 			if (options->mix > 100)
 				options->mix = 100;
 			break;
+		case 'p':
+			options->defpan = strtoul(optarg, NULL, 0);
+			if (options->defpan < 0)
+				options->defpan = 0;
+			if (options->defpan > 100)
+				options->defpan = 100;
+			break;
 		case OPT_PROBEONLY:
 			options->probeonly = 1;
 			break;

src/xmp.1

@@ -1,4 +1,4 @@
-.TH "XMP" "1" "Version 4\&.0\&.8" "Jul 2014" "Extended Module Player" 
+.TH "XMP" "1" "Version 4\&.0\&.9" "Ago 2014" "Extended Module Player" 
 .PP 
 .SH "NAME" 
 xmp - Extended Module Player
@@ -27,7 +27,8 @@ xmp - Extended Module Player
 [\fB\-\-nocmd\fP]
 [\fB\-o, \-\-output\-file\fP \fIfilename\fP]
 [\fB\-\-offset\-bug\-emulation\fP]
-[\fB\-P, \-\-pan\fP \fIpan\fP]
+[\fB\-P, \-\-pan\fP \fInum\fP]
+[\fB\-p, \-\-default\-pan\fP \fInum\fP]
 [\fB\-\-probe\-only\fP]
 [\fB\-q, \-\-quiet\fP]
 [\fB\-R, \-\-random\fP]
@@ -107,6 +108,9 @@ given as the file name, the output will be sent to stdout\&.
 Emulate Protracker 2.x handling of effect 0x09 (set sample offset)\&.
 .IP "\fB\-P, \-\-pan\fP \fInum\fP" 
 Set the percentual panning amplitude\&.
+.IP "\fB\-P, \-\-default\-pan\fP \fInum\fP" 
+Set the percentual default pan setting for modules that don\'t set their
+own pan values\&. Useful to reduce LRRL pan separation on headphones\&.
 .IP "\fB\-\-probe\-only\fP" 
 Exit after probing the audio device\&.
 .IP "\fB\-R, \-\-random\fP"