Mercurial > sdl-ios-xcode
view docs/man3/SDL_CDPlayTracks.3 @ 1555:780fd5b61df1
Fixed bug #89
Date: Sun, 23 Oct 2005 16:39:03 +0200
From: "A. Schmid" <sahib@phreaker.net>
Subject: [SDL] no software surfaces with svgalib driver?
Hi,
I noticed that the SDL (1.2.9) svgalib driver only makes use of linear
addressable (framebuffer) video modes. On older systems (like one of
mine), linear addressable modes are often not available.
Especially for cards with VESA VBE < 2.0 the svgalib vesa driver is
unusable, since VESA only supports framebuffering for VBE 2.0 and later.
The changes necessary to add support for software surfaces seem to be
relatively small. I only had to hack src/video/svga/SDL_svgavideo.c (see
attached patch). The code worked fine for me, but it is no more than a
proof of concept and should be reviewed (probably has a memory leak when
switching modes). It also uses the vgagl library (included in the
svgalib package) and needs to be linked against it.
-Alex
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Sun, 19 Mar 2006 12:05:16 +0000 |
parents | e5bc29de3f0a |
children | 546f7c1eb755 |
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.TH "SDL_CDPlayTracks" "3" "Tue 11 Sep 2001, 22:58" "SDL" "SDL API Reference" .SH "NAME" SDL_CDPlayTracks\- Play the given CD track(s) .SH "SYNOPSIS" .PP \fB#include "SDL\&.h" .sp \fBint \fBSDL_CDPlayTracks\fP\fR(\fBSDL_CD *cdrom, int start_track, int start_frame, int ntracks, int nframes)\fR); .SH "DESCRIPTION" .PP \fBSDL_CDPlayTracks\fP plays the given CD starting at track \fBstart_track\fR, for \fBntracks\fR tracks\&. .PP \fBstart_frame\fR is the frame offset, from the beginning of the \fBstart_track\fR, at which to start\&. \fBnframes\fR is the frame offset, from the beginning of the last track (\fBstart_track\fR+\fBntracks\fR), at which to end playing\&. .PP \fBSDL_CDPlayTracks\fP should only be called after calling \fI\fBSDL_CDStatus\fP\fR to get track information about the CD\&. .PP .RS \fBNote: .PP Data tracks are ignored\&. .RE .SH "RETURN VALUE" .PP Returns \fB0\fR, or \fB-1\fR if there was an error\&. .SH "EXAMPLES" .PP .PP .nf \f(CW/* assuming cdrom is a previously opened device */ /* Play the entire CD */ if(CD_INDRIVE(SDL_CDStatus(cdrom))) SDL_CDPlayTracks(cdrom, 0, 0, 0, 0); /* Play the first track */ if(CD_INDRIVE(SDL_CDStatus(cdrom))) SDL_CDPlayTracks(cdrom, 0, 0, 1, 0); /* Play first 15 seconds of the 2nd track */ if(CD_INDRIVE(SDL_CDStatus(cdrom))) SDL_CDPlayTracks(cdrom, 1, 0, 0, CD_FPS*15);\fR .fi .PP .SH "SEE ALSO" .PP \fI\fBSDL_CDPlay\fP\fR, \fI\fBSDL_CDStatus\fP\fR, \fI\fBSDL_CD\fP\fR ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 22:58