thirdparty/scummvm
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Option "desired_screen_aspect_ratio" for fullscreen mode in the SDL backend

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Shortcoming: the picture is not centered

svn-id: r43214
This commit is contained in:
Bertrand Augereau 2009-08-10 18:03:54 +00:00
parent 19d5aa25dc
commit 10b74c336b
4 changed files with 94 additions and 5 deletions
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26
backends/platform/sdl/sdl.cpp
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@ -85,6 +85,31 @@ static Uint32 timer_handler(Uint32 interval, void *param) {
return interval;
}
AspectRatio::AspectRatio(int w, int h) {
// TODO : Validation and so on...
// Currently, we just ensure the program don't instantiate non-supported aspect ratios
_kw = w;
_kh = h;
}
static const size_t AR_COUNT = 4;
static const char* desiredAspectRatioAsStrings[AR_COUNT] = { "auto", "4/3", "16/9", "16/10" };
static const AspectRatio desiredAspectRatios[AR_COUNT] = { AspectRatio(0, 0), AspectRatio(4,3), AspectRatio(16,9), AspectRatio(16,10) };
static AspectRatio getDesiredAspectRatio() {
//TODO : We could parse an arbitrary string, if we code enough proper validation
Common::String desiredAspectRatio = ConfMan.get("desired_screen_aspect_ratio");
for (size_t i = 0; i < AR_COUNT; i++) {
assert(desiredAspectRatioAsStrings[i] != NULL);
if (!scumm_stricmp(desiredAspectRatio.c_str(), desiredAspectRatioAsStrings[i])) {
return desiredAspectRatios[i];
}
}
// TODO : Report a warning
return AspectRatio(0, 0);
}
void OSystem_SDL::initBackend() {
assert(!_inited);
@ -124,6 +149,7 @@ void OSystem_SDL::initBackend() {
_videoMode.mode = GFX_DOUBLESIZE;
_videoMode.scaleFactor = 2;
_videoMode.aspectRatioCorrection = ConfMan.getBool("aspect_ratio");
_videoMode.desiredAspectRatio = getDesiredAspectRatio();
_scalerProc = Normal2x;
#else // for small screen platforms
_videoMode.mode = GFX_NORMAL;