/[cebix]/SIDPlayer/src/main_sdl.cpp
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Contents of /SIDPlayer/src/main_sdl.cpp

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Revision 1.10 - (show annotations)
2001-05-22T20:01:34Z (17 years, 5 months ago) by cebix
Branch: MAIN
Changes since 1.9: +3 -1 lines
File MIME type: text/x-c++src
--speed option had no effect

1 /*
2 * main_sdl.cpp - SIDPlayer SDL main program
3 *
4 * SIDPlayer (C) Copyright 1996-2001 Christian Bauer
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20
21 #include "sys.h"
22
23 #include <SDL.h>
24 #include <SDL/SDL_endian.h>
25
26 #include <stdio.h>
27 #include <stdlib.h>
28 #include <errno.h>
29
30 #include "main.h"
31 #include "prefs.h"
32 #include "sid.h"
33
34
35 /*
36 * Main program
37 */
38
39 static void usage(const char *prg_name)
40 {
41 printf("Usage: %s [OPTION...] FILE [song_number]\n", prg_name);
42 PrefsPrintUsage();
43 exit(0);
44 }
45
46 static void quit(void)
47 {
48 ExitAll();
49 SDL_Quit();
50 }
51
52 int main(int argc, char **argv)
53 {
54 // Print banner
55 printf(
56 PACKAGE " Version " VERSION "\n\n"
57 "Copyright (C) 1996-2001 Christian Bauer\n"
58 "E-mail: Christian.Bauer@uni-mainz.de\n"
59 "http://www.uni-mainz.de/~bauec002/\n\n"
60 "This is free software with ABSOLUTELY NO WARRANTY.\n"
61 "You are welcome to redistribute it under certain conditions.\n"
62 "For details, see the file COPYING.\n\n"
63 );
64
65 // Initialize everything
66 if (SDL_Init(SDL_INIT_AUDIO) < 0) {
67 fprintf(stderr, "Couldn't initialize SDL (%s)\n", SDL_GetError());
68 exit(1);
69 }
70 atexit(quit);
71 InitAll(argc, argv);
72 int32 speed = PrefsFindInt32("speed");
73
74 // Parse non-option arguments
75 const char *file_name = NULL;
76 int song = 0;
77 for (int i=1; i<argc; i++) {
78 if (strcmp(argv[i], "--help") == 0)
79 usage(argv[0]);
80 else if (argv[i][0] == '-') {
81 fprintf(stderr, "Unrecognized option '%s'\n", argv[i]);
82 usage(argv[0]);
83 } else {
84 if (file_name == NULL)
85 file_name = argv[i]; // First non-option argument is file name
86 else
87 song = atoi(argv[i]); // Second non-option argument is song number
88 }
89 }
90 if (file_name == NULL)
91 usage(argv[0]);
92
93 // Load given PSID file
94 if (!LoadPSIDFile(file_name)) {
95 fprintf(stderr, "Couldn't load '%s' (not a PSID file?)\n", file_name);
96 exit(1);
97 }
98
99 // Select song
100 if (song > 0) {
101 if (song > number_of_songs)
102 song = number_of_songs;
103 SelectSong(song - 1);
104 }
105
106 SIDAdjustSpeed(speed); // SelectSong and LoadPSIDFile() reset this to 100%
107
108 // Print file information
109 printf("Module Name: %s\n", module_name);
110 printf("Author : %s\n", author_name);
111 printf("Copyright : %s\n\n", copyright_info);
112 printf("Playing song %d/%d\n", current_song + 1, number_of_songs);
113
114 // Replay or output to file?
115 const char *outfile = PrefsFindString("outfile");
116 if (outfile) {
117
118 // Open file
119 SDL_RWops *f = SDL_RWFromFile(outfile, "wb");
120 if (f == NULL) {
121 fprintf(stderr, "Can't open '%s' for writing (%s)\n", outfile, strerror(errno));
122 exit(1);
123 }
124
125 // Get format information
126 int32 channels = (PrefsFindBool("stereo") ? 2 : 1);
127 int32 bits = (PrefsFindBool("audio16bit") ? 16 : 8);
128 int32 rate = PrefsFindInt32("samplerate");
129 int32 time = PrefsFindInt32("time");
130 int32 bytes_per_frame = channels * (bits / 8);
131 int32 bytes_per_second = rate * bytes_per_frame;
132 int32 data_length = time * bytes_per_second;
133
134 // Write header
135 SDL_WriteLE32(f, 0x46464952); // "RIFF"
136 SDL_WriteLE32(f, 36 + data_length);
137 SDL_WriteLE32(f, 0x45564157); // "WAVE"
138 SDL_WriteLE32(f, 0x20746D66); // "fmt "
139 SDL_WriteLE32(f, 16);
140 SDL_WriteLE16(f, 1);
141 SDL_WriteLE16(f, channels);
142 SDL_WriteLE32(f, rate);
143 SDL_WriteLE32(f, bytes_per_second);
144 SDL_WriteLE16(f, bytes_per_frame);
145 SDL_WriteLE16(f, bits);
146 SDL_WriteLE32(f, 0x61746164); // "data"
147 SDL_WriteLE32(f, data_length);
148
149 // Calculate sound and write to file
150 uint8 *buf = new uint8[bytes_per_second];
151 for (int i=0; i<time; i++) {
152 SIDCalcBuffer(buf, bytes_per_second);
153 #if SDL_BYTEORDER == SDL_BIG_ENDIAN
154 if (bits > 8) {
155 // WAV file is little-endian, swap audio data
156 for (int b=0; b<bytes_per_second; b+=2) {
157 uint8 tmp = buf[b];
158 buf[b] = buf[b+1];
159 buf[b+1] = tmp;
160 }
161 }
162 #endif
163 SDL_RWwrite(f, buf, bytes_per_second, 1);
164 }
165 delete[] buf;
166
167 // Close file
168 SDL_RWclose(f);
169 printf("Output written to '%s'\n", outfile);
170
171 } else {
172
173 // Start replay and enter main loop
174 SDL_PauseAudio(false);
175 while (true) {
176 SDL_Event e;
177 if (SDL_WaitEvent(&e)) {
178 if (e.type == SDL_QUIT)
179 break;
180 }
181 }
182 }
183
184 return 0;
185 }

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