/[cebix]/SIDPlayer/src/main_sdl.cpp
ViewVC logotype

Annotation of /SIDPlayer/src/main_sdl.cpp

Parent Directory Parent Directory | Revision Log Revision Log | View Revision Graph Revision Graph


Revision 1.9 - (hide annotations)
2001-04-01T17:04:43Z (17 years, 3 months ago) by cebix
Branch: MAIN
Changes since 1.8: +71 -9 lines
File MIME type: text/x-c++src
SDL version can output to WAV file

1 cebix 1.1 /*
2     * main_sdl.cpp - SIDPlayer SDL main program
3     *
4 cebix 1.6 * SIDPlayer (C) Copyright 1996-2001 Christian Bauer
5 cebix 1.1 *
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 cebix 1.9 #include <SDL/SDL_endian.h>
25    
26 cebix 1.1 #include <stdio.h>
27     #include <stdlib.h>
28 cebix 1.9 #include <errno.h>
29 cebix 1.1
30     #include "main.h"
31 cebix 1.4 #include "prefs.h"
32     #include "sid.h"
33 cebix 1.1
34    
35     /*
36     * Main program
37     */
38    
39     static void usage(const char *prg_name)
40     {
41 cebix 1.7 printf("Usage: %s [OPTION...] FILE [song_number]\n", prg_name);
42 cebix 1.5 PrefsPrintUsage();
43 cebix 1.1 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 cebix 1.5 "Copyright (C) 1996-2001 Christian Bauer\n"
58 cebix 1.1 "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 cebix 1.5 // 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    
73     // Parse non-option arguments
74 cebix 1.8 const char *file_name = NULL;
75 cebix 1.1 int song = 0;
76 cebix 1.8 for (int i=1; i<argc; i++) {
77     if (strcmp(argv[i], "--help") == 0)
78     usage(argv[0]);
79     else if (argv[i][0] == '-') {
80     fprintf(stderr, "Unrecognized option '%s'\n", argv[i]);
81     usage(argv[0]);
82     } else {
83     if (file_name == NULL)
84     file_name = argv[i]; // First non-option argument is file name
85     else
86     song = atoi(argv[i]); // Second non-option argument is song number
87 cebix 1.3 }
88     }
89 cebix 1.8 if (file_name == NULL)
90     usage(argv[0]);
91 cebix 1.1
92     // Load given PSID file
93 cebix 1.3 if (!LoadPSIDFile(file_name)) {
94     fprintf(stderr, "Couldn't load '%s' (not a PSID file?)\n", file_name);
95 cebix 1.1 exit(1);
96     }
97    
98     // Select song
99     if (song > 0) {
100     if (song > number_of_songs)
101     song = number_of_songs;
102     SelectSong(song - 1);
103 cebix 1.9 SIDAdjustSpeed(PrefsFindInt32("speed")); // SelectSong resets this to 100%
104 cebix 1.1 }
105    
106     // Print file information
107     printf("Module Name: %s\n", module_name);
108     printf("Author : %s\n", author_name);
109     printf("Copyright : %s\n\n", copyright_info);
110     printf("Playing song %d/%d\n", current_song + 1, number_of_songs);
111    
112 cebix 1.9 // Replay or output to file?
113     const char *outfile = PrefsFindString("outfile");
114     if (outfile) {
115    
116     // Open file
117     SDL_RWops *f = SDL_RWFromFile(outfile, "wb");
118     if (f == NULL) {
119     fprintf(stderr, "Can't open '%s' for writing (%s)\n", outfile, strerror(errno));
120     exit(1);
121     }
122    
123     // Get format information
124     int32 channels = (PrefsFindBool("stereo") ? 2 : 1);
125     int32 bits = (PrefsFindBool("audio16bit") ? 16 : 8);
126     int32 rate = PrefsFindInt32("samplerate");
127     int32 time = PrefsFindInt32("time");
128     int32 bytes_per_frame = channels * (bits / 8);
129     int32 bytes_per_second = rate * bytes_per_frame;
130     int32 data_length = time * bytes_per_second;
131    
132     // Write header
133     SDL_WriteLE32(f, 0x46464952); // "RIFF"
134     SDL_WriteLE32(f, 36 + data_length);
135     SDL_WriteLE32(f, 0x45564157); // "WAVE"
136     SDL_WriteLE32(f, 0x20746D66); // "fmt "
137     SDL_WriteLE32(f, 16);
138     SDL_WriteLE16(f, 1);
139     SDL_WriteLE16(f, channels);
140     SDL_WriteLE32(f, rate);
141     SDL_WriteLE32(f, bytes_per_second);
142     SDL_WriteLE16(f, bytes_per_frame);
143     SDL_WriteLE16(f, bits);
144     SDL_WriteLE32(f, 0x61746164); // "data"
145     SDL_WriteLE32(f, data_length);
146    
147     // Calculate sound and write to file
148     uint8 *buf = new uint8[bytes_per_second];
149     for (int i=0; i<time; i++) {
150     SIDCalcBuffer(buf, bytes_per_second);
151     #if SDL_BYTEORDER == SDL_BIG_ENDIAN
152     if (bits > 8) {
153     // WAV file is little-endian, swap audio data
154     for (int b=0; b<bytes_per_second; b+=2) {
155     uint8 tmp = buf[b];
156     buf[b] = buf[b+1];
157     buf[b+1] = tmp;
158     }
159     }
160     #endif
161     SDL_RWwrite(f, buf, bytes_per_second, 1);
162     }
163     delete[] buf;
164    
165     // Close file
166     SDL_RWclose(f);
167     printf("Output written to '%s'\n", outfile);
168    
169     } else {
170    
171     // Start replay and enter main loop
172     SDL_PauseAudio(false);
173     while (true) {
174     SDL_Event e;
175     if (SDL_WaitEvent(&e)) {
176     if (e.type == SDL_QUIT)
177     break;
178     }
179 cebix 1.1 }
180     }
181    
182     return 0;
183     }

  ViewVC Help
Powered by ViewVC 1.1.26