Go to the source code of this file.
Classes | |
| struct | audio_codec |
Functions | |
| audio_codec * | new_audio_codec (char *name) |
| void | close_audio_codec (audio_codec *a) |
| void | code_audio (audio_codec *a) |
| void | decode_audio (audio_codec *a) |
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Definition at line 41 of file audio.c. References a, audio_codec::input_file, audio_codec::name, and print_time(). Referenced by cleanup(). 00045 {
00046 if (a->input_file != NULL) {
00047 printf("%s AUDIO [%s] closing input file.\n", print_time(), a->name);
00048 fclose(a->input_file);
00049 }
00050 free(a);
00051 }
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Definition at line 54 of file audio.c. References a, al_send_request(), bytes::block, error(), get_clock(), audio_codec::input_file, audio_codec::input_filename, audio_codec::name, new_bytes(), audio_codec::output, print_time(), randomize_byte(), and warn(). Referenced by main_loop(). 00058 {
00059 bytes *b;
00060 int size,r,i,sendok;
00061
00062 if (get_clock() % 30 == 0) /* encode every 30 ms */
00063 {
00064 /* generate bytes structure to send of size 27 23 or 6*/
00065 r = rand() % 3;
00066 switch (r) {
00067 case 0:
00068 size = 27;
00069 break;
00070 case 1:
00071 size = 23;
00072 break;
00073 case 2:
00074 size = 6;
00075 break;
00076 }
00077
00078 if (debug) {
00079 printf("%s AUDIO [%s] sent %d bytes\n", print_time(), a->name, size);
00080 }
00081
00082 b = new_bytes(size);
00083 if (!a->input_file) {
00084 a->input_file=fopen(a->input_filename, "r");
00085 if (!a->input_file) {
00086 warn("code_audio", "input audio file does not exist.\n");
00087 a->input_filename[0]=0;
00088 }
00089 }
00090 for (i=0;i<size;i++) {
00091 if (a->input_filename[0]) {
00092 if (feof(a->input_file))
00093 fseek(a->input_file,0,0);
00094 b->block[i] = fgetc(a->input_file);
00095 }
00096 else {
00097 randomize_byte((b->block)+i);
00098 }
00099 }
00100
00101 /* send it to the al sending entity */
00102 sendok = al_send_request(a->output, b);
00103 if (!sendok)
00104 error("code_audio","Sending bytes to AL failed");
00105 }
00106 }
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Definition at line 110 of file audio.c. References a, al_indication(), al_receive(), byte, error(), audio_codec::input, and audio_codec::output_filename. Referenced by main_loop(). 00115 {
00116 byte b;
00117
00118 FILE *outfile=NULL;
00119
00120 if (al_indication(a->input)) {
00121 outfile = fopen(a->output_filename, "a");
00122 if (outfile == NULL) {
00123 error("decode_audio", "couldn't open output file");
00124 }
00125 }
00126
00127 while (al_indication(a->input)) {
00128 b = al_receive(a->input);
00129
00130 fputc(b, outfile);
00131 }
00132
00133 if (outfile) {
00134 fclose(outfile);
00135 }
00136 }
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Definition at line 17 of file audio.c. References a, DEF_AUD_INPUT_FILE, DEF_AUD_OUTPUT_FILE, error(), audio_codec::input_file, audio_codec::input_filename, audio_codec::name, and audio_codec::output_filename. Referenced by start_config(). 00021 {
00022 char s[256];
00023 int x;
00024 audio_codec *a;
00025
00026 a = (audio_codec *) malloc(sizeof(audio_codec));
00027 if (a == NULL)
00028 error("new_audio_codec","can't malloc audio codec");
00029
00030 strcpy(a->name, name);
00031
00032 strcpy(a->input_filename, DEF_AUD_INPUT_FILE);
00033 strcpy(a->output_filename, DEF_AUD_OUTPUT_FILE);
00034
00035 a->input_file=NULL;
00036
00037 return a;
00038 }
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1.3.9.1