ref: 478feff9f20614e5205a7486feb5ed32ceca019b
dir: /examples/dumbout.c/
#include <argtable2.h>
#include <dumb.h>
#include <stdint.h>
#include <string.h>
#include <stdbool.h>
#include <math.h>
static const int endian_test = 1;
#define is_bigendian() ((*(char*)&endian_test) == 0)
enum ENDIANNESS {
DUMB_LITTLE_ENDIAN = 0,
DUMB_BIG_ENDIAN
};
typedef struct {
DUH_SIGRENDERER *renderer;
DUH *src;
FILE *dst;
float delta;
int bufsize;
bool is_stdout;
} streamer_t;
typedef struct {
int bits;
int endianness;
int is_unsigned;
int freq;
int quality;
int n_channels;
float volume;
float delay;
const char *input;
char *output;
} settings_t;
int main(int argc, char *argv[]) {
int retcode = 1;
int nerrors = 0;
streamer_t streamer;
settings_t settings;
memset(&streamer, 0, sizeof(streamer_t));
memset(&settings, 0, sizeof(settings_t));
// Defaults
settings.freq = 44100;
settings.n_channels = 2;
settings.bits = 16;
settings.endianness = DUMB_LITTLE_ENDIAN;
settings.is_unsigned = false;
settings.volume = 1.0f;
settings.delay = 0.0f;
settings.quality = DUMB_RQ_CUBIC;
// commandline argument parser options
struct arg_lit *arg_help = arg_lit0("h", "help", "print this help and exits");
struct arg_dbl *arg_delay = arg_dbl0("d", "delay", "<delay>", "sets the initial delay in seconds (0.0 to 64.0, default 0.0)");
struct arg_dbl *arg_volume = arg_dbl0("v", "volume", "<volume", "sets the output volume (-8.0 to +8.0, default 1.0)");
struct arg_int *arg_samplerate = arg_int0("s", "samplerate", "<freq>", "sets the sampling rate (default 44100)");
struct arg_int *arg_quality = arg_int0("r", "quality", "<quality>", "specify the resampling quality to use");
struct arg_lit *arg_mono = arg_lit0("m", "mono", "generate mono output instead of stereo");
struct arg_lit *arg_bigendian = arg_lit0("b", "bigendian", "generate big-endian data instead of little-endian");
struct arg_lit *arg_eight = arg_lit0("8", "eight", "generate 8-bit instead of 16-bit");
struct arg_lit *arg_unsigned = arg_lit0("u", "unsigned", "generate unsigned output instead of signed");
struct arg_file *arg_output = arg_file0("o", "output", "<file>", "output file");
struct arg_file *arg_input = arg_file1(NULL, NULL, "<file>", "input module file");
struct arg_end *arg_fend = arg_end(20);
void* argtable[] = {arg_help, arg_input, arg_output, arg_delay, arg_volume, arg_samplerate, arg_quality,
arg_mono, arg_bigendian, arg_eight, arg_unsigned, arg_fend};
const char* progname = "dumbout";
// Make sure everything got allocated
if(arg_nullcheck(argtable) != 0) {
fprintf(stderr, "%s: insufficient memory\n", progname);
goto exit_0;
}
// Parse inputs
nerrors = arg_parse(argc, argv, argtable);
// Handle help
if(arg_help->count > 0) {
fprintf(stderr, "Usage: %s", progname);
arg_print_syntax(stderr, argtable, "\n");
fprintf(stderr, "\nArguments:\n");
arg_print_glossary(stderr, argtable, "%-25s %s\n");
goto exit_0;
}
// Handle errors
if(nerrors > 0) {
arg_print_errors(stderr, arg_fend, progname);
fprintf(stderr, "Try '%s --help' for more information.\n", progname);
goto exit_0;
}
// Get input and output filenames
settings.input = arg_input->filename[0];
if(arg_output->count > 0) {
settings.output = malloc(strlen(arg_output->filename[0])+1);
strcpy(settings.output, arg_output->filename[0]);
} else {
settings.output = malloc(strlen(arg_output->basename[0])+5);
sprintf(settings.output, "%s%s", arg_output->basename[0], ".pcm");
}
// Handle the switch options
if(arg_bigendian->count > 0) { settings.endianness = DUMB_BIG_ENDIAN; }
if(arg_eight->count > 0) { settings.bits = 8; }
if(arg_unsigned->count > 0) { settings.is_unsigned = true; }
if(arg_mono->count > 0) { settings.n_channels = 1; }
if(arg_delay->count > 0) {
settings.delay = arg_delay->dval[0];
if(settings.delay < 0.0f || settings.delay >= 64.0f) {
fprintf(stderr, "Initial delay must be between 0.0f and 64.0f.\n");
goto exit_0;
}
}
if(arg_volume->count > 0) {
settings.volume = arg_volume->dval[0];
if(settings.volume < -8.0f || settings.volume > 8.0f) {
fprintf(stderr, "Volume must be between -8.0f and 8.0f.\n");
goto exit_0;
}
}
if(arg_samplerate->count > 0) {
settings.freq = arg_samplerate->ival[0];
if(settings.freq < 1 || settings.freq > 96000) {
fprintf(stderr, "Sampling rate must be between 1 and 96000.\n");
goto exit_0;
}
}
if(arg_quality->count > 0) {
settings.quality = arg_quality->ival[0];
if(settings.quality < 0 || settings.quality >= DUMB_RQ_N_LEVELS) {
fprintf(stderr, "Quality must be between %d and %d.\n", 0, DUMB_RQ_N_LEVELS-1);
goto exit_0;
}
}
// dumb settings stuff
dumb_register_stdfiles();
// Load source
streamer.src = dumb_load_any(settings.input, 0, 0);
if(!streamer.src) {
fprintf(stderr, "Unable to load file %s for playback!\n", settings.input);
goto exit_0;
}
// Set up playback
streamer.renderer = duh_start_sigrenderer(streamer.src, 0, settings.n_channels, 0);
streamer.delta = 65536.0f / settings.freq;
streamer.bufsize = 4096 * (settings.bits / 8) * settings.n_channels;
// Stop producing samples on module end
DUMB_IT_SIGRENDERER *itsr = duh_get_it_sigrenderer(streamer.renderer);
dumb_it_set_loop_callback(itsr, &dumb_it_callback_terminate, NULL);
dumb_it_set_xm_speed_zero_callback(itsr, &dumb_it_callback_terminate, NULL);
dumb_it_set_resampling_quality(itsr, settings.quality);
// Open output
if(strcmp(settings.output, "-") == 0) {
streamer.dst = stdout;
streamer.is_stdout = true;
} else {
streamer.dst = fopen(settings.output, "wb");
streamer.is_stdout = false;
if(!streamer.dst) {
fprintf(stderr, "Could not open output file %s!", settings.output);
goto exit_1;
}
}
bool run = true;
char *buffer = malloc(streamer.bufsize);
int read_samples;
int read_bytes;
// If output endianness is different than machine endianness, and output is 16 bits, reorder bytes.
int switch_endianness = ((is_bigendian() && settings.endianness == DUMB_LITTLE_ENDIAN) ||
(!is_bigendian() && settings.endianness == DUMB_BIG_ENDIAN));
// Write the initial delay to the file if one was requested.
long d = ((long)floor(settings.delay * settings.freq + 0.5f)) * settings.n_channels * (settings.bits / 8);
if(d) {
// Fill the buffer with silence. Remember to take into account endianness
if(settings.is_unsigned) {
if(settings.bits == 16) {
if(settings.endianness == DUMB_BIG_ENDIAN) {
// Unsigned 16bits big endian
for(int i = 0; i < streamer.bufsize; i += 2) {
buffer[i ] = (char)0x80;
buffer[i+1] = (char)0x00;
}
} else {
// Unsigned 16bits little endian
for(int i = 0; i < streamer.bufsize; i += 2) {
buffer[i ] = (char)0x00;
buffer[i+1] = (char)0x80;
}
}
} else {
// Unsigned 8 bits
memset(buffer, 0x80, streamer.bufsize);
}
} else {
// Signed
memset(buffer, 0, streamer.bufsize);
}
while(d >= streamer.bufsize) {
fwrite(buffer, 1, streamer.bufsize, streamer.dst);
d -= streamer.bufsize;
}
if(d) {
fwrite(buffer, 1, d, streamer.dst);
}
}
// Loop until we have nothing to loop through. Dumb will stop giving out bytes when the file is done.
while(run) {
read_samples = duh_render(streamer.renderer,
settings.bits,
(int)settings.is_unsigned,
settings.volume,
streamer.delta,
4096, buffer);
read_bytes = read_samples * (settings.bits / 8) * settings.n_channels;
// switch endianness if required
if(switch_endianness && settings.bits == 16) {
char tmp;
for(int i = 0; i < read_bytes / 2; i++) {
tmp = buffer[i*2+0];
buffer[i*2+0] = buffer[i*2+1];
buffer[i*2+1] = tmp;
}
}
// Write to output stream and flush if it happens to be stdout
fwrite(buffer, 1, read_bytes, streamer.dst);
if(streamer.is_stdout) {
fflush(streamer.dst);
}
run = (read_samples > 0);
}
free(buffer);
// We made it this far without crashing, so let's just exit with no error :)
retcode = 0;
if(!streamer.is_stdout && streamer.dst) {
fclose(streamer.dst);
}
exit_1:
if(streamer.renderer) {
duh_end_sigrenderer(streamer.renderer);
}
if(streamer.src) {
unload_duh(streamer.src);
}
exit_0:
free(settings.output);
arg_freetable(argtable, sizeof(argtable)/sizeof(argtable[0]));
return retcode;
}