[sdl_omap.git] / docs / html / guidecdromexamples.html

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>CDROM Examples</H1
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><H2
CLASS="SECT2"
><A
NAME="AEN393"
></A
>Listing CD-ROM drives</H2
><P
><PRE
CLASS="PROGRAMLISTING"
>    #include "SDL.h"

    /* Initialize SDL first */
    if ( SDL_Init(SDL_INIT_CDROM) &#60; 0 ) {
        fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError());
        exit(1);
    }
    atexit(SDL_Quit);

    /* Find out how many CD-ROM drives are connected to the system */
    printf("Drives available: %d\n", SDL_CDNumDrives());
    for ( i=0; i&#60;SDL_CDNumDrives(); ++i ) {
        printf("Drive %d:  \"%s\"\n", i, SDL_CDName(i));
    }</PRE
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><H2
CLASS="SECT2"
><A
NAME="AEN397"
></A
>Opening the default drive</H2
><P
><PRE
CLASS="PROGRAMLISTING"
>    SDL_CD *cdrom;
    CDstatus status;
    char *status_str;

    cdrom = SDL_CDOpen(0);
    if ( cdrom == NULL ) {
        fprintf(stderr, "Couldn't open default CD-ROM drive: %s\n",
                        SDL_GetError());
        exit(2);
    }

    status = SDL_CDStatus(cdrom);
    switch (status) {
        case CD_TRAYEMPTY:
            status_str = "tray empty";
            break;
        case CD_STOPPED:
            status_str = "stopped";
            break;
        case CD_PLAYING:
            status_str = "playing";
            break;
        case CD_PAUSED:
            status_str = "paused";
            break;
        case CD_ERROR:
            status_str = "error state";
            break;
    }
    printf("Drive status: %s\n", status_str);
    if ( status &#62;= CD_PLAYING ) {
        int m, s, f;
        FRAMES_TO_MSF(cdrom-&#62;cur_frame, &#38;m, &#38;s, &#38;f);
        printf("Currently playing track %d, %d:%2.2d\n",
        cdrom-&#62;track[cdrom-&#62;cur_track].id, m, s);
    }</PRE
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><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN401"
></A
>Listing the tracks on a CD</H2
><P
><PRE
CLASS="PROGRAMLISTING"
>    SDL_CD *cdrom;          /* Assuming this has already been set.. */
    int i;
    int m, s, f;

    SDL_CDStatus(cdrom);
    printf("Drive tracks: %d\n", cdrom-&#62;numtracks);
    for ( i=0; i&#60;cdrom-&#62;numtracks; ++i ) {
        FRAMES_TO_MSF(cdrom-&#62;track[i].length, &#38;m, &#38;s, &#38;f);
        if ( f &#62; 0 )
            ++s;
        printf("\tTrack (index %d) %d: %d:%2.2d\n", i,
        cdrom-&#62;track[i].id, m, s);
    }</PRE
></P
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><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN405"
></A
>Play an entire CD</H2
><P
><PRE
CLASS="PROGRAMLISTING"
>    SDL_CD *cdrom;          /* Assuming this has already been set.. */

    // Play entire CD:
    if ( CD_INDRIVE(SDL_CDStatus(cdrom)) )
        SDL_CDPlayTracks(cdrom, 0, 0, 0, 0);

        // Play last track:
        if ( CD_INDRIVE(SDL_CDStatus(cdrom)) ) {
            SDL_CDPlayTracks(cdrom, cdrom-&#62;numtracks-1, 0, 0, 0);
        }

        // Play first and second track and 10 seconds of third track:
        if ( CD_INDRIVE(SDL_CDStatus(cdrom)) )
            SDL_CDPlayTracks(cdrom, 0, 0, 2, CD_FPS * 10);</PRE
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Commit	Line	Data
e14743d1	1	<HTML
	2	><HEAD
	3	><TITLE
	4	>CDROM Examples</TITLE
	5	><META
	6	NAME="GENERATOR"
	7	CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+
	8	"><LINK
	9	REL="HOME"
	10	TITLE="SDL Library Documentation"
	11	HREF="index.html"><LINK
	12	REL="UP"
	13	TITLE="Examples"
	14	HREF="guideexamples.html"><LINK
	15	REL="PREVIOUS"
	16	TITLE="Audio Examples"
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	40	>SDL Library Documentation</TH
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	45	ALIGN="left"
	46	VALIGN="bottom"
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	50	>Prev</A
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	53	WIDTH="80%"
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	55	VALIGN="bottom"
	56	>Chapter 4. Examples</TD
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	58	WIDTH="10%"
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	62	HREF="guidetimeexamples.html"
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	64	>Next</A
65	></TD
66	></TR
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68	><HR
69	ALIGN="LEFT"
70	WIDTH="100%"></DIV
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
208	></P
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275	>