SDL_sound_CoreAudio: playsound/playsound.c comparison

comparison playsound/playsound.c @ 135:69cd80e80363

Added Torbj�rn Andersson's command lines, and cleaned up the usage output.

author	Ryan C. Gordon <icculus@icculus.org>
date	Fri, 12 Oct 2001 16:54:35 +0000
parents	3fcb23da06ba
children	e3f4767d6037

comparison

equal deleted inserted replaced

-:3ce7ede90d24
+:69cd80e80363
 #include "SDL.h"
 #include "SDL_sound.h"
 #define PLAYSOUND_VER_MAJOR  0
 #define PLAYSOUND_VER_MINOR  1
-#define PLAYSOUND_VER_PATCH  2
+#define PLAYSOUND_VER_PATCH  3
 static void output_versions(const char *argv0)
 {
 Sound_Version compiled;
 static void output_usage(const char *argv0)
 {
 fprintf(stderr,
-"USAGE: %s [--decoders] [soundFile1] ... [soundFileN]\n",
+"USAGE: %s [...options...] [soundFile1] ... [soundFileN]\n"
+"\n"
+"   Options:\n"
+"     --rate x      Playback at sample rate of x HZ.\n"
+"     --format fmt  Playback in fmt format (see below).\n"
+"     --channels n  Playback on n channels (1 or 2).\n"
+"     --version     Display version information and exit.\n"
+"     --decoders    List supported sound formats and exit.\n"
+"     --help        Display this information and exit.\n"
+"\n"
+"   Valid arguments to the --format option are:\n"
+"     U8      Unsigned 8-bit.\n"
+"     S8      Signed 8-bit.\n"
+"     U16LSB  Unsigned 16-bit (least significant byte first).\n"
+"     U16MSB  Unsigned 16-bit (most significant byte first).\n"
+"     S16LSB  Signed 16-bit (least significant byte first).\n"
+"     S16MSB  Signed 16-bit (most significant byte first).\n"
+"\n",
 argv0);
 } /* output_usage */
+static int str_to_fmt(char *str)
+{
+if (strcmp(str, "U8") == 0)
+return AUDIO_U8;
+if (strcmp(str, "S8") == 0)
+return AUDIO_S8;
+if (strcmp(str, "U16LSB") == 0)
+return AUDIO_U16LSB;
+if (strcmp(str, "S16LSB") == 0)
+return AUDIO_S16LSB;
+if (strcmp(str, "U16MSB") == 0)
+return AUDIO_U16MSB;
+if (strcmp(str, "S16MSB") == 0)
+return AUDIO_S16MSB;
+return 0;
+} /* str_to_fmt */
 int main(int argc, char **argv)
 {
 Sound_AudioInfo sound_desired;
 SDL_AudioSpec sdl_desired;
 SDL_AudioSpec sdl_actual;
 Sound_Sample *sample;
+int use_specific_audiofmt = 0;
 int i;
 /* !!! FIXME: Move this to a parse_cmdline() function... */
 if (argc < 2)
 {
 output_usage(argv[0]);
 return(42);
 } /* if */
+memset(&sound_desired, '\0', sizeof (sound_desired));
 for (i = 0; i < argc; i++)
 {
 if (strncmp(argv[i], "--", 2) != 0)
 continue;
-if ( (strcmp(argv[i], "--version") == 0) ||
+if (strcmp(argv[i], "--version") == 0)
-(strcmp(argv[i], "--help") == 0 ) )
 {
 output_versions(argv[0]);
+return(42);
+} /* if */
+else if (strcmp(argv[i], "--help") == 0)
+{
 output_usage(argv[0]);
-} /* if */
+return(42);
+} /* if */
+else if (strcmp(argv[i], "--rate") == 0 && argc > i + 1)
+{
+use_specific_audiofmt = 1;
+sound_desired.rate = atoi(argv[++i]);
+if (sound_desired.rate <= 0)
+{
+fprintf(stderr, "Bad argument to --rate!\n");
+return(42);
+}
+} /* else if */
+else if (strcmp(argv[i], "--format") == 0 && argc > i + 1)
+{
+use_specific_audiofmt = 1;
+sound_desired.format = str_to_fmt(argv[++i]);
+if (sound_desired.format == 0)
+{
+fprintf(stderr, "Bad argument to --format! Try one of:\n"
+"U8, S8, U16LSB, S16LSB, U16MSB, S16MSB\n");
+return(42);
+}
+} /* else if */
+else if (strcmp(argv[i], "--channels") == 0 && argc > i + 1)
+{
+use_specific_audiofmt = 1;
+sound_desired.channels = atoi(argv[++i]);
+if (sound_desired.channels < 1 || sound_desired.channels > 2)
+{
+fprintf(stderr,
+"Bad argument to --channels! Try 1 (mono) or 2 "
+"(stereo).\n");
+return(42);
+}
+} /* else if */
 else if (strcmp(argv[i], "--decoders") == 0)
 {
 if (!Sound_Init())
 {
 fprintf(stderr, "unknown option: \"%s\"\n", argv[i]);
 return(42);
 } /* else */
 } /* for */
+/* Pick sensible defaults for any value not explicitly specified. */
+if (use_specific_audiofmt)
+{
+if (sound_desired.rate == 0)
+sound_desired.rate = 44100;
+if (sound_desired.format == 0)
+sound_desired.format = AUDIO_S16SYS;
+if (sound_desired.channels == 0)
+sound_desired.channels = 2;
+} /* if */
 if (SDL_Init(SDL_INIT_AUDIO) == -1)
 {
 fprintf(stderr, "SDL_Init(SDL_INIT_AUDIO) failed!\n"
 "  reason: [%s].\n", SDL_GetError());
 return(42);
 return(42);
 } /* if */
 for (i = 1; i < argc; i++)
 {
+/* !!! FIXME: This is ugly! */
+if ( (strcmp(argv[i], "--rate") == 0) ||
+(strcmp(argv[i], "--format") == 0) ||
+(strcmp(argv[i], "--channels") == 0) )
+{
+i++;
+continue;
+} /* if */
 if (strncmp(argv[i], "--", 2) == 0)
 continue;
-sample = Sound_NewSampleFromFile(argv[i], NULL, 4096 * 4);
+sample = Sound_NewSampleFromFile(argv[i],
+use_specific_audiofmt ? &sound_desired : NULL, 4096 * 4);
 if (!sample)
 {
 fprintf(stderr, "Couldn't load \"%s\"!\n"
 "  reason: [%s].\n", argv[i], Sound_GetError());
 continue;
 } /* if */
-sdl_desired.freq = sample->actual.rate;
+/*
-sdl_desired.format = sample->actual.format;
+* Unless explicitly specified, pick the format from the sound
-sdl_desired.channels = sample->actual.channels;
+* to be played.
-sdl_desired.samples = 4096;
+*/
+if (use_specific_audiofmt)
+{
+sdl_desired.freq = sound_desired.rate;
+sdl_desired.format = sound_desired.format;
+sdl_desired.channels = sound_desired.channels;
+} /* if */
+else
+{
+sdl_desired.freq = sample->actual.rate;
+sdl_desired.format = sample->actual.format;
+sdl_desired.channels = sample->actual.channels;
+} /* else */
+sdl_desired.samples = 4096 * 2;
 sdl_desired.callback = audio_callback;
 sdl_desired.userdata = sample;
 if (SDL_OpenAudio(&sdl_desired, NULL) < 0)
 {

Mercurial > SDL_sound_CoreAudio

comparison playsound/playsound.c @ 135:69cd80e80363