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#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include "jogamp_newt_driver_egl_gbm_DisplayDriver.h"
#include "jogamp_newt_driver_egl_gbm_ScreenDriver.h"
#include "jogamp_newt_driver_egl_gbm_WindowDriver.h"
#include <xf86drm.h>
#include <xf86drmMode.h>
#include <gbm.h>
// #define VERBOSE_ON 1
#ifdef VERBOSE_ON
#define DBG_PRINT(...) fprintf(stderr, __VA_ARGS__); fflush(stderr)
#else
#define DBG_PRINT(...)
#endif
typedef struct {
int fd; // drmClose
drmModeRes *resources; // drmModeFreeResources
drmModeConnector *connector; // drmModeFreeConnector
drmModeEncoder *encoder; // drmModeFreeEncoder
drmModeModeInfo *current_mode;
} DRM_HANDLE;
typedef struct {
struct gbm_bo *bo;
uint32_t fb_id;
} DRM_GBM_FB;
static jmethodID notifyScreenModeID = NULL;
/**
* Display
*/
static void freeDrm(DRM_HANDLE *drm) {
if( NULL != drm ) {
if( NULL != drm->encoder ) {
drmModeFreeEncoder(drm->encoder);
drm->encoder = NULL;
}
if( NULL != drm->connector ) {
drmModeFreeConnector(drm->connector);
drm->connector = NULL;
}
if( NULL != drm->resources ) {
drmModeFreeResources(drm->resources);
drm->resources = NULL;
}
if( 0 != drm->fd ) {
drmClose(drm->fd);
drm->fd = 0;
}
free(drm);
}
}
JNIEXPORT jboolean JNICALL Java_jogamp_newt_driver_egl_gbm_DisplayDriver_initIDs
(JNIEnv *env, jclass clazz)
{
DBG_PRINT( "EGL_GBM.Display initIDs ok\n" );
return JNI_TRUE;
}
JNIEXPORT jlong JNICALL Java_jogamp_newt_driver_egl_gbm_DisplayDriver_initDrm
(JNIEnv *env, jclass clazz)
{
static const char *modules[] = {
"i915", "radeon", "nouveau", "vmwgfx", "omapdrm", "exynos", "msm"
};
int i, area;
DRM_HANDLE *drm = calloc(1, sizeof(DRM_HANDLE));
for (i = 0; i < 6 /* ARRAY_SIZE(modules) */; i++) {
printf("trying to load module %s...", modules[i]);
drm->fd = drmOpen(modules[i], NULL);
if (drm->fd < 0) {
printf("failed.\n");
} else {
printf("success.\n");
break;
}
}
if (drm->fd < 0) {
printf("could not open drm device\n");
goto error;
}
drm->resources = drmModeGetResources(drm->fd);
if ( NULL == drm->resources ) {
printf("drmModeGetResources failed: %s\n", strerror(errno));
goto error;
}
/* find a connected connector: */
for (i = 0; i < drm->resources->count_connectors; i++) {
drm->connector = drmModeGetConnector(drm->fd, drm->resources->connectors[i]);
if (drm->connector->connection == DRM_MODE_CONNECTED) {
/* it's connected, let's use this! */
break;
}
/* we could be fancy and listen for hotplug events and wait for
* a connector..
*/
printf("no connected connector!\n");
goto error;
}
/* find highest resolution mode: */
for (i = 0, area = 0; i < drm->connector->count_modes; i++) {
drmModeModeInfo *current_mode = &drm->connector->modes[i];
int current_area = current_mode->hdisplay * current_mode->vdisplay;
if (current_area > area) {
drm->current_mode = current_mode;
area = current_area;
}
}
if ( NULL == drm->current_mode ) {
printf("could not find mode!\n");
goto error;
}
/* find encoder: */
for (i = 0; i < drm->resources->count_encoders; i++) {
drm->encoder = drmModeGetEncoder(drm->fd, drm->resources->encoders[i]);
if (drm->encoder->encoder_id == drm->connector->encoder_id) {
break;
}
printf("no encoder!\n");
goto error;
}
// drm->crtc_id = encoder->crtc_id;
// drm->connector_id = connector->connector_id;
return (jlong) (intptr_t) drm;
error:
freeDrm(drm);
return 0;
}
JNIEXPORT void JNICALL Java_jogamp_newt_driver_egl_gbm_DisplayDriver_freeDrm
(JNIEnv *env, jclass clazz, jlong jdrm) {
freeDrm( (DRM_HANDLE*) (intptr_t) jdrm );
}
JNIEXPORT jlong JNICALL Java_jogamp_newt_driver_egl_gbm_DisplayDriver_OpenGBMDisplay0
(JNIEnv *env, jclass clazz, jlong jdrm)
{
DRM_HANDLE *drm = (DRM_HANDLE*) (intptr_t) jdrm;
struct gbm_device * dev = gbm_create_device(drm->fd);
return (jlong) (intptr_t) dev;
}
JNIEXPORT void JNICALL Java_jogamp_newt_driver_egl_gbm_DisplayDriver_CloseGBMDisplay0
(JNIEnv *env, jclass clazz, jlong jgbm)
{
struct gbm_device * dev = (struct gbm_device *) (intptr_t) jgbm;
gbm_device_destroy(dev);
}
/**
* Screen
*/
JNIEXPORT jboolean JNICALL Java_jogamp_newt_driver_egl_gbm_ScreenDriver_initIDs
(JNIEnv *env, jclass clazz)
{
notifyScreenModeID = (*env)->GetMethodID(env, clazz, "notifyScreenMode", "(III)V");
if (notifyScreenModeID == NULL) {
DBG_PRINT( "EGL_GBM.Screen initIDs FALSE\n" );
return JNI_FALSE;
}
DBG_PRINT( "EGL_GBM.Screen initIDs ok\n" );
return JNI_TRUE;
}
JNIEXPORT void JNICALL Java_jogamp_newt_driver_egl_gbm_ScreenDriver_initNative
(JNIEnv *env, jobject obj, jlong jdrm)
{
DRM_HANDLE *drm = (DRM_HANDLE*) (intptr_t) jdrm;
uint32_t screen_width = 0;
uint32_t screen_height = 0;
uint32_t screen_vrefresh = 0;
int32_t success = 0;
if( NULL != drm ) {
/**
connector.modes.hdisplay; // width
connector.modes.vdisplay; // height
connector.modes.flags; // flags
encoder.crtc_id; // crt_idx
*/
screen_width = drm->current_mode->hdisplay;
screen_height = drm->current_mode->vdisplay;
screen_vrefresh = drm->current_mode->vrefresh;
DBG_PRINT( "EGL_GBM.Screen initNative ok %dx%d @ %d\n", screen_width, screen_height, screen_vrefresh );
(*env)->CallVoidMethod(env, obj, notifyScreenModeID, (jint) screen_width, (jint) screen_height, (jint) screen_vrefresh);
} else {
DBG_PRINT( "BCM.Screen initNative failed\n" );
}
}
/**
* Window
*/
JNIEXPORT jlong JNICALL Java_jogamp_newt_driver_egl_gbm_WindowDriver_CreateWindow0
(JNIEnv *env, jobject obj, jlong jdrm, jlong jgbm, jint x, jint y, jint width, jint height, jboolean opaque, jint alphaBits)
{
DRM_HANDLE *drm = (DRM_HANDLE*) (intptr_t) jdrm;
struct gbm_device *dev = (struct gbm_device *) (intptr_t) jgbm;
struct gbm_surface *surface = gbm_surface_create(dev,
drm->current_mode->hdisplay, drm->current_mode->vdisplay,
opaque ? GBM_FORMAT_XRGB8888 : GBM_BO_FORMAT_ARGB8888,
GBM_BO_USE_SCANOUT | GBM_BO_USE_RENDERING);
if ( NULL == surface ) {
printf("failed to create gbm surface\n");
return -1;
}
return (jlong) (intptr_t) surface;
}
JNIEXPORT void JNICALL Java_jogamp_newt_driver_egl_gbm_WindowDriver_CloseWindow0
(JNIEnv *env, jobject obj, jlong display, jlong window)
{
struct gbm_surface *surface = (struct gbm_surface *) (intptr_t) window;
gbm_surface_destroy(surface);
}
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