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#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include "egldisplay.h"
#include "egldriver.h"
#include "eglmode.h"
#include "eglglobals.h"
#include "eglscreen.h"
#define MIN2(A, B) (((A) < (B)) ? (A) : (B))
static char *
my_strdup(const char *s)
{
int l = strlen(s);
char *s2 = malloc(l + 1);
strcpy(s2, s);
return s2;
}
/**
* Given an EGLModeMESA handle, return the corresponding _EGLMode object
* or null if non-existant.
*/
_EGLMode *
_eglLookupMode(EGLDisplay dpy, EGLModeMESA mode)
{
const _EGLDisplay *disp = _eglLookupDisplay(dpy);
EGLint scrnum;
/* loop over all screens on the display */
for (scrnum = 0; scrnum < disp->NumScreens; scrnum++) {
const _EGLScreen *scrn = disp->Screens[scrnum];
EGLint i;
/* search list of modes for handle */
for (i = 0; i < scrn->NumModes; i++) {
if (scrn->Modes[i].Handle == mode) {
return scrn->Modes + i;
}
}
}
return NULL;
}
/**
* Add a new mode with the given attributes (width, height, depth, refreshRate)
* to the given screen.
* Assign a new mode ID/handle to the mode as well.
* \return pointer to the new _EGLMode
*/
_EGLMode *
_eglAddMode(_EGLScreen *screen, EGLint width, EGLint height,
EGLint refreshRate, const char *name)
{
EGLint n;
_EGLMode *newModes;
assert(screen);
assert(width > 0);
assert(height > 0);
assert(refreshRate > 0);
n = screen->NumModes;
newModes = (_EGLMode *) realloc(screen->Modes, (n+1) * sizeof(_EGLMode));
if (newModes) {
screen->Modes = newModes;
screen->Modes[n].Handle = n + 1;
screen->Modes[n].Width = width;
screen->Modes[n].Height = height;
screen->Modes[n].RefreshRate = refreshRate;
screen->Modes[n].Stereo = EGL_FALSE;
screen->Modes[n].Name = my_strdup(name);
screen->NumModes++;
return screen->Modes + n;
}
else {
return NULL;
}
}
/**
* Search for the EGLMode that best matches the given attribute list.
*/
EGLBoolean
_eglChooseModeMESA(_EGLDriver *drv, EGLDisplay dpy, EGLScreenMESA screen,
const EGLint *attrib_list, EGLModeMESA *modes,
EGLint modes_size, EGLint *num_modes)
{
EGLint i;
/* XXX incomplete */
for (i = 0; attrib_list[i] != EGL_NONE; i++) {
switch (attrib_list[i]) {
case EGL_WIDTH:
i++;
break;
case EGL_HEIGHT:
i++;
break;
case EGL_REFRESH_RATE_MESA:
i++;
break;
#if 0
case EGL_STEREO_MESA:
i++;
break;
#endif
default:
_eglError(EGL_BAD_ATTRIBUTE, "eglChooseMode");
return EGL_FALSE;
}
}
return EGL_TRUE;
}
/**
* Return all possible modes for the given screen
*/
EGLBoolean
_eglGetModesMESA(_EGLDriver *drv, EGLDisplay dpy, EGLScreenMESA screen,
EGLModeMESA *modes, EGLint modes_size, EGLint *num_modes)
{
_EGLScreen *scrn = _eglLookupScreen(dpy, screen);
EGLint i;
if (!scrn) {
_eglError(EGL_BAD_SCREEN_MESA, "eglGetModes");
return EGL_FALSE;
}
*num_modes = MIN2(modes_size, scrn->NumModes);
for (i = 0; i < *num_modes; i++) {
modes[i] = scrn->Modes[i].Handle;
}
return EGL_TRUE;
}
/**
* Query an attribute of a mode.
*/
EGLBoolean
_eglGetModeAttribMESA(_EGLDriver *drv, EGLDisplay dpy,
EGLModeMESA mode, EGLint attribute, EGLint *value)
{
_EGLMode *m = _eglLookupMode(dpy, mode);
switch (attribute) {
case EGL_MODE_ID_MESA:
*value = m->Handle;
break;
case EGL_WIDTH:
*value = m->Width;
break;
case EGL_HEIGHT:
*value = m->Height;
break;
#if 0
case EGL_DEPTH_MESA:
*value = m->Depth;
break;
#endif
case EGL_REFRESH_RATE_MESA:
*value = m->RefreshRate;
break;
#if 0
case EGL_STEREO_MESA:
*value = m->Stereo;
break;
#endif
default:
_eglError(EGL_BAD_ATTRIBUTE, "eglGetModeAttrib");
return EGL_FALSE;
}
return EGL_TRUE;
}
const char *
_eglQueryModeStringMESA(_EGLDriver *drv, EGLDisplay dpy, EGLModeMESA mode)
{
_EGLMode *m = _eglLookupMode(dpy, mode);
return m->Name;
}
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