Now using getopt for options parsing
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Phyks
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README.md
21
README.md
@ -1,13 +1,13 @@
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(Bad) Artificial Song Generator
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===============================
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This is just a simple C code to handle wave files (see files wave_stuf.* for the functions) and a simple application to generating purely artificial sounds (just by creating a wave file with values from a sine wave at the good frequency to make a note.
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This is just a simple C code to handle wave files (see files wave_stuf.* for the functions) and a simple application to generate purely artificial sounds (just by creating a wave file with values from a sine wave at the good frequency to make a note).
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### Included files are :
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* _examples_ folder with some examples music sheets and the resulting generated wave files
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* _generateur.c_ which is the main program
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* _generateur_partition.py_ which is just a simple program to generate basic music sheet to use with the main program
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* _generateur_musicsheet.py_ which is just a simple program to generate basic music sheet to use with the main program
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* _wave_stuff.*_ which are the functions to handle wave files
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## Usage of the main program
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@ -15,12 +15,15 @@ This is just a simple C code to handle wave files (see files wave_stuf.* for the
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The main program should be compiled using the makefile.
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To use it, just run from command line :
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<code>generateur.out partition output.wav bpm silence</code> where
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<code>./generateur.out options</code> where
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* _partition_ is the path to the music sheet you want to generate
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* _output.wav_ is the resulting wave files
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* _bpm_ is the speed of the song (in bpm)
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* _silence_ is an integer that should be set to 1 to add silences between notes
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options are amongst :
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* _-m_ (or _--musicsheet_) _file_ where _file_ is the path to the music sheet you want to generate. [mandatory argument]
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* _-o_ (or _--output_) _file_ where _file_ is the resulting wave file. [mandatory argument]
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* _-b_ (or _--bpm_) _bpm_ where _bpm_ is the speed of the song (in bpm). [mandatory argument]
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* _-s_ (or _--silence_) to add silences between notes. [optional argument]
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* _-h_ (or _--help_) to display an help message.
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## Usage of the basic music sheet generator
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@ -29,9 +32,9 @@ This program allows you to write a simple music sheet without always looking for
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* RE, MI, FA, SOL, LA, SI, DO (where LA is 440Hz)
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* RE2, MI2, FA2, SOL2, LA2, SI2, DO2 (where LA is 880Hz).
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Length is any integer you want. It will define the length of the note (play with both length and bpm params to get what you want).
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Length is any integer you want. It will define the length of the note (play with both _length_ and _bpm_ (during playback) params to get what you want).
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You can use the -o (--output) option with a filename as argument to store the generated music sheet to this specific file.
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You can use the _-o_ (_--output_) option with a filename as argument to store the generated music sheet to this specific file.
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## License
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### TLDR;
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227
generateur.c
227
generateur.c
@ -3,117 +3,170 @@
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# include "string.h"
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# include "math.h"
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# include "wave_stuff.h"
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# include "getopt.h"
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# ifndef M_PI
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# define M_PI 3.14159265358979323846
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# define M_PI 3.14159265358979323846
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# endif
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# define TAILLE_MAX 100
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char **str_split (char *s, const char *ct)
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{
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char **tab = NULL;
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char **tab = NULL;
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if (s != NULL && ct != NULL)
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{
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int i;
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char *cs = NULL;
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size_t size = 1;
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if (s != NULL && ct != NULL)
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{
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int i;
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char *cs = NULL;
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size_t size = 1;
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/* (1) */
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for (i = 0; (cs = strtok (s, ct)); i++)
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{
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if (size <= i + 1)
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{
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void *tmp = NULL;
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/* (2) */
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size <<= 1;
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tmp = realloc (tab, sizeof (*tab) * size);
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if (tmp != NULL)
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/* (1) */
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for (i = 0; (cs = strtok (s, ct)); i++)
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{
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if (size <= i + 1)
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{
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tab = tmp;
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void *tmp = NULL;
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/* (2) */
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size <<= 1;
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tmp = realloc (tab, sizeof (*tab) * size);
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if (tmp != NULL)
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{
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tab = tmp;
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}
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else
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{
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fprintf (stderr, "Memoire insuffisante\n");
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free (tab);
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tab = NULL;
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exit (EXIT_FAILURE);
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}
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}
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else
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{
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fprintf (stderr, "Memoire insuffisante\n");
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free (tab);
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tab = NULL;
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exit (EXIT_FAILURE);
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}
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}
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/* (3) */
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tab[i] = cs;
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s = NULL;
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}
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tab[i] = NULL;
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}
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return tab;
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/* (3) */
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tab[i] = cs;
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s = NULL;
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}
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tab[i] = NULL;
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}
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return tab;
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}
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void generer_note(int freq, int note, int duree, float *xd, int start)
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{
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int i;
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for (i = start; i < start+duree; i++)
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{
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xd[i] += (int)(32767 *sin(2*M_PI*note*i/freq));
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}
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int i;
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for (i = start; i < start+duree; i++)
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{
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xd[i] += (int)(32767 *sin(2*M_PI*note*i/freq));
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}
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}
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void print_help() {
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fprintf(stderr, "\t\t\t\t================\n");
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fprintf(stderr, "\t\t\t\t|| SongPlayer ||\n");
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fprintf(stderr, "\t\t\t\t================\n\n");
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fprintf(stderr, "Usage :\n");
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fprintf(stderr, "=======\n\tgenererateur.out options\n\n");
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fprintf(stderr, "Options :\n");
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fprintf(stderr, "=========\n");
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fprintf(stderr, "\t-h\t\t--help\t\t\tPrint this help message.\n");
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fprintf(stderr, "\t-o file\t\t--output file\t\tSpecify the output wave file (mandatory).\n");
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fprintf(stderr, "\t-b bpm\t\t--bpm bpm\t\tSpecify the speed in bpm to play the song (mandatory).\n");
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fprintf(stderr, "\t-m musicsheet\t--musicsheet\t\tSpecify the input music sheet to use (mandatory).\n");
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fprintf(stderr, "\t-s\t\t--silence\t\tAdd some silences between notes (optional).\n");
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}
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int main(int argc, char **argv)
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{
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if (argc < 5)
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{
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fprintf(stderr,"Usage: %s partition output.wav bpm silence\nsilence should be 1 to add silence between notes.\n",argv[0]);
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return 0;
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}
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float *xd;
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int nx = 0, freq = 44100, canal = 0, verbose = 0, BitsPerSample = 16, dureeNote = 0, start = 0, n = 0, silence, Split1, Split2;
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float time = 1./atof(argv[3])*60.;
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char ligne[TAILLE_MAX];
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FILE* partition = NULL;
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partition = fopen(argv[1], "r");
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fgets(ligne, TAILLE_MAX, partition);
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n = atoi(ligne);
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silence = atoi(argv[4]);
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if(silence == 1)
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{
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nx = (int)(freq*time*(n+n/8));
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}
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else
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{
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nx = (int)(freq*time*n);
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}
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dureeNote = (int)(freq*time);
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xd = (float*)calloc(nx,sizeof(float));
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float *xd;
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int nx = 0, freq = 44100, canal = 0, verbose = 0, BitsPerSample = 16, dureeNote = 0, start = 0, n = 0, silence = 0, Split1, Split2;
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float time = 0.5;
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char ligne[TAILLE_MAX];
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char* output = NULL;
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FILE* musicsheet = NULL;
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while(fgets(ligne, TAILLE_MAX, partition) != NULL)
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{
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if(strchr(ligne, ':')!=NULL)
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const char* const short_options = "hm:b:o:s";
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const struct option long_options[] = {
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{ "help", 0, NULL, 'h' },
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{ "bpm", 1, NULL, 'b' },
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{ "musicsheet", 1, NULL, 'm' },
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{ "output", 1, NULL, 'o' },
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{ "silence", 0, NULL, 's' },
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{ NULL, 0, NULL, 0 }
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};
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int next_option = 0;
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do {
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next_option = getopt_long(argc, argv, short_options, long_options, NULL);
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switch(next_option)
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{
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case 'h':
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print_help();
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return EXIT_SUCCESS;
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break;
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case 'm':
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musicsheet = fopen(optarg, "r");
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break;
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case 'o':
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output = optarg;
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break;
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case 's':
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silence = 1;
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break;
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case 'b':
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time = 1./atof(optarg)*60.;
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break;
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}
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} while(next_option != -1);
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if(musicsheet == NULL || output == NULL) {
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print_help();
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return EXIT_SUCCESS;
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}
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fgets(ligne, TAILLE_MAX, musicsheet);
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n = atoi(ligne);
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if(silence == 1)
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{
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char** Split=str_split(ligne, ":");
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Split1=atoi(Split[0]);
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Split2=atoi(Split[1]);
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nx = (int)(freq*time*(n+n/8));
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}
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else
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{
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Split1=atoi(ligne);
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Split2=1;
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nx = (int)(freq*time*n);
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}
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generer_note(freq, Split1, Split2*dureeNote, xd, start);
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start += Split2*dureeNote;
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if(silence == 1)
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dureeNote = (int)(freq*time);
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xd = (float*)calloc(nx,sizeof(float));
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while(fgets(ligne, TAILLE_MAX, musicsheet) != NULL)
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{
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generer_note(freq, 0, (int)(Split2*dureeNote/8), xd, start);
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start += (int)(Split2*dureeNote/8);
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if(strchr(ligne, ':')!=NULL)
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{
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char** Split=str_split(ligne, ":");
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Split1=atoi(Split[0]);
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Split2=atoi(Split[1]);
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}
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else
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{
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Split1=atoi(ligne);
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Split2=1;
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}
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generer_note(freq, Split1, Split2*dureeNote, xd, start);
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start += Split2*dureeNote;
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if(silence == 1)
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{
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generer_note(freq, 0, (int)(Split2*dureeNote/8), xd, start);
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start += (int)(Split2*dureeNote/8);
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}
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}
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}
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save_wave_from_array(xd, nx, argv[2], freq, BitsPerSample);
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return 0;
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save_wave_from_array(xd, nx, output, freq, BitsPerSample);
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return 0;
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}
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