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71 | ><DIV |
72 | CLASS="SECT1" |
73 | ><H1 |
74 | CLASS="SECT1" |
75 | ><A |
76 | NAME="GUIDECDROMEXAMPLES" |
77 | ></A |
78 | >CDROM Examples</H1 |
79 | ><P |
80 | ></P |
81 | ><DIV |
82 | CLASS="SECT2" |
83 | ><H2 |
84 | CLASS="SECT2" |
85 | ><A |
86 | NAME="AEN393" |
87 | ></A |
88 | >Listing CD-ROM drives</H2 |
89 | ><P |
90 | ><PRE |
91 | CLASS="PROGRAMLISTING" |
92 | > #include "SDL.h" |
93 | |
94 | /* Initialize SDL first */ |
95 | if ( SDL_Init(SDL_INIT_CDROM) < 0 ) { |
96 | fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError()); |
97 | exit(1); |
98 | } |
99 | atexit(SDL_Quit); |
100 | |
101 | /* Find out how many CD-ROM drives are connected to the system */ |
102 | printf("Drives available: %d\n", SDL_CDNumDrives()); |
103 | for ( i=0; i<SDL_CDNumDrives(); ++i ) { |
104 | printf("Drive %d: \"%s\"\n", i, SDL_CDName(i)); |
105 | }</PRE |
106 | ></P |
107 | ></DIV |
108 | ><DIV |
109 | CLASS="SECT2" |
110 | ><H2 |
111 | CLASS="SECT2" |
112 | ><A |
113 | NAME="AEN397" |
114 | ></A |
115 | >Opening the default drive</H2 |
116 | ><P |
117 | ><PRE |
118 | CLASS="PROGRAMLISTING" |
119 | > SDL_CD *cdrom; |
120 | CDstatus status; |
121 | char *status_str; |
122 | |
123 | cdrom = SDL_CDOpen(0); |
124 | if ( cdrom == NULL ) { |
125 | fprintf(stderr, "Couldn't open default CD-ROM drive: %s\n", |
126 | SDL_GetError()); |
127 | exit(2); |
128 | } |
129 | |
130 | status = SDL_CDStatus(cdrom); |
131 | switch (status) { |
132 | case CD_TRAYEMPTY: |
133 | status_str = "tray empty"; |
134 | break; |
135 | case CD_STOPPED: |
136 | status_str = "stopped"; |
137 | break; |
138 | case CD_PLAYING: |
139 | status_str = "playing"; |
140 | break; |
141 | case CD_PAUSED: |
142 | status_str = "paused"; |
143 | break; |
144 | case CD_ERROR: |
145 | status_str = "error state"; |
146 | break; |
147 | } |
148 | printf("Drive status: %s\n", status_str); |
149 | if ( status >= CD_PLAYING ) { |
150 | int m, s, f; |
151 | FRAMES_TO_MSF(cdrom->cur_frame, &m, &s, &f); |
152 | printf("Currently playing track %d, %d:%2.2d\n", |
153 | cdrom->track[cdrom->cur_track].id, m, s); |
154 | }</PRE |
155 | ></P |
156 | ></DIV |
157 | ><DIV |
158 | CLASS="SECT2" |
159 | ><H2 |
160 | CLASS="SECT2" |
161 | ><A |
162 | NAME="AEN401" |
163 | ></A |
164 | >Listing the tracks on a CD</H2 |
165 | ><P |
166 | ><PRE |
167 | CLASS="PROGRAMLISTING" |
168 | > SDL_CD *cdrom; /* Assuming this has already been set.. */ |
169 | int i; |
170 | int m, s, f; |
171 | |
172 | SDL_CDStatus(cdrom); |
173 | printf("Drive tracks: %d\n", cdrom->numtracks); |
174 | for ( i=0; i<cdrom->numtracks; ++i ) { |
175 | FRAMES_TO_MSF(cdrom->track[i].length, &m, &s, &f); |
176 | if ( f > 0 ) |
177 | ++s; |
178 | printf("\tTrack (index %d) %d: %d:%2.2d\n", i, |
179 | cdrom->track[i].id, m, s); |
180 | }</PRE |
181 | ></P |
182 | ></DIV |
183 | ><DIV |
184 | CLASS="SECT2" |
185 | ><H2 |
186 | CLASS="SECT2" |
187 | ><A |
188 | NAME="AEN405" |
189 | ></A |
190 | >Play an entire CD</H2 |
191 | ><P |
192 | ><PRE |
193 | CLASS="PROGRAMLISTING" |
194 | > SDL_CD *cdrom; /* Assuming this has already been set.. */ |
195 | |
196 | // Play entire CD: |
197 | if ( CD_INDRIVE(SDL_CDStatus(cdrom)) ) |
198 | SDL_CDPlayTracks(cdrom, 0, 0, 0, 0); |
199 | |
200 | // Play last track: |
201 | if ( CD_INDRIVE(SDL_CDStatus(cdrom)) ) { |
202 | SDL_CDPlayTracks(cdrom, cdrom->numtracks-1, 0, 0, 0); |
203 | } |
204 | |
205 | // Play first and second track and 10 seconds of third track: |
206 | if ( CD_INDRIVE(SDL_CDStatus(cdrom)) ) |
207 | SDL_CDPlayTracks(cdrom, 0, 0, 2, CD_FPS * 10);</PRE |
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