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#include "egl_gbm.h"
#include <EGL/egl.h>
WEAK uint64_t
gbm_bo_get_modifier(struct gbm_bo *bo);
WEAK int
gbm_bo_get_plane_count(struct gbm_bo *bo);
WEAK uint32_t
gbm_bo_get_stride_for_plane(struct gbm_bo *bo, int plane);
WEAK uint32_t
gbm_bo_get_offset(struct gbm_bo *bo, int plane);
typedef struct {
struct gbm_bo *bo;
uint32_t fb_id;
} DRM_FB;
static void page_flip_handler(int fd, unsigned int frame,
unsigned int sec, unsigned int usec, void *data)
{
/* suppress 'unused parameter' warnings */
(void)fd, (void)frame, (void)sec, (void)usec;
int *waiting_for_flip = data;
*waiting_for_flip = 0;
}
static drmEventContext drm_event_ctx = {
.version = 2,
.page_flip_handler = page_flip_handler,
};
static void drm_fb_destroy_callback(struct gbm_bo *bo, void *data)
{
struct gbm_device * gbmDev = gbm_bo_get_device(bo);
int drm_fd = gbm_device_get_fd(gbmDev);
DRM_FB *fb = data;
if (fb->fb_id)
drmModeRmFB(drm_fd, fb->fb_id);
free(fb);
}
static DRM_FB * drm_fb_get_from_bo(struct gbm_bo *bo)
{
struct gbm_device * gbmDev = gbm_bo_get_device(bo);
int drm_fd = gbm_device_get_fd(gbmDev);
DRM_FB *fb = gbm_bo_get_user_data(bo);
uint32_t width, height, format,
strides[4] = {0}, handles[4] = {0},
offsets[4] = {0}, flags = 0;
int ret = -1;
if (fb)
return fb;
fb = calloc(1, sizeof *fb);
fb->bo = bo;
width = gbm_bo_get_width(bo);
height = gbm_bo_get_height(bo);
format = gbm_bo_get_format(bo);
if (gbm_bo_get_modifier && gbm_bo_get_plane_count &&
gbm_bo_get_stride_for_plane && gbm_bo_get_offset) {
uint64_t modifiers[4] = {0};
modifiers[0] = gbm_bo_get_modifier(bo);
const int num_planes = gbm_bo_get_plane_count(bo);
for (int i = 0; i < num_planes; i++) {
strides[i] = gbm_bo_get_stride_for_plane(bo, i);
handles[i] = gbm_bo_get_handle(bo).u32;
offsets[i] = gbm_bo_get_offset(bo, i);
modifiers[i] = modifiers[0];
}
if (modifiers[0]) {
flags = DRM_MODE_FB_MODIFIERS;
DBG_PRINT("Using modifier %" PRIx64 "\n", modifiers[0]);
}
ret = drmModeAddFB2WithModifiers(drm_fd, width, height,
format, handles, strides, offsets,
modifiers, &fb->fb_id, flags);
if(ret) {
ERR_PRINT("drmModeAddFB2WithModifiers failed!\n");
} else {
ERR_PRINT("drmModeAddFB2WithModifiers OK!\n");
}
}
if (ret) {
memcpy(handles, (uint32_t [4]){gbm_bo_get_handle(bo).u32,0,0,0}, 16);
memcpy(strides, (uint32_t [4]){gbm_bo_get_stride(bo),0,0,0}, 16);
memset(offsets, 0, 16);
ret = drmModeAddFB2(drm_fd, width, height, format,
handles, strides, offsets, &fb->fb_id, 0);
if(ret) {
ERR_PRINT("drmModeAddFB2 failed!\n");
} else {
ERR_PRINT("drmModeAddFB2 OK!\n");
}
}
if (ret) {
ERR_PRINT("failed to create fb: %s\n", strerror(errno));
free(fb);
return NULL;
}
gbm_bo_set_user_data(bo, fb, drm_fb_destroy_callback);
return fb;
}
JNIEXPORT jlong JNICALL Java_jogamp_newt_driver_egl_gbm_WindowDriver_FirstSwapSurface0
(JNIEnv *env, jobject obj, jlong jdrm, jlong jgbmSurface, jlong jeglDisplay, jlong jeglSurface)
{
DRM_HANDLE *drm = (DRM_HANDLE*) (intptr_t) jdrm;
struct gbm_surface *gbmSurface = (struct gbm_surface *) (intptr_t) jgbmSurface;
EGLDisplay eglDisplay = (EGLDisplay) (intptr_t) jeglDisplay;
EGLSurface eglSurface = (EGLSurface) (intptr_t) jeglSurface;
struct gbm_bo *nextBO = NULL;
DRM_FB *fb = NULL;
int ret;
if ( EGL_TRUE != eglSwapBuffers(eglDisplay, eglSurface) ) {
EGLint err = eglGetError();
ERR_PRINT("Failed eglSwapBuffers, err 0x%x\n", err);
return 0;
}
nextBO = gbm_surface_lock_front_buffer(gbmSurface);
fb = drm_fb_get_from_bo(nextBO);
if (!fb) {
ERR_PRINT("Failed to get a new framebuffer BO\n");
return 0;
}
/* set mode: */
ret = drmModeSetCrtc(drm->fd, drm->encoder->crtc_id, fb->fb_id, 0, 0,
&drm->connector->connector_id, 1, drm->current_mode);
/**
int drmModeSetCrtc(int fd, uint32_t crtcId, uint32_t bufferId,
uint32_t x, uint32_t y, uint32_t *connectors, int count,
drmModeModeInfoPtr mode);
*/
if (ret) {
ERR_PRINT("drmModeSetCrtc failed to set mode: fd %d, enc_id 0x%x, crtc_id 0x%x, fb_id 0x%x, conn_id 0x%x, curMode %s: %d %s\n",
drm->fd, drm->encoder->encoder_id, drm->encoder->crtc_id, fb->fb_id,
drm->connector->connector_id, drm->current_mode->name, ret, strerror(errno));
return 0;
}
DBG_PRINT( "EGL_GBM.Window FirstSwapSurface0 nextBO %p, fd %d, enc_id 0x%x, crtc_id 0x%x, fb_id 0x%x, conn_id 0x%x, curMode %s\n",
nextBO,
drm->fd, drm->encoder->encoder_id, drm->encoder->crtc_id, fb->fb_id,
drm->connector->connector_id, drm->current_mode->name);
return (jlong) (intptr_t) nextBO;
}
JNIEXPORT jlong JNICALL Java_jogamp_newt_driver_egl_gbm_WindowDriver_NextSwapSurface0
(JNIEnv *env, jobject obj, jlong jdrm, jlong jgbmSurface, jlong jlastBO, jlong jeglDisplay, jlong jeglSurface)
{
DRM_HANDLE *drm = (DRM_HANDLE*) (intptr_t) jdrm;
struct gbm_surface *gbmSurface = (struct gbm_surface *) (intptr_t) jgbmSurface;
struct gbm_bo *lastBO = (struct gbm_bo*) (intptr_t) jlastBO, *nextBO = NULL;
EGLDisplay eglDisplay = (EGLDisplay) (intptr_t) jeglDisplay;
EGLSurface eglSurface = (EGLSurface) (intptr_t) jeglSurface;
DRM_FB *fb = NULL;
int ret, waiting_for_flip = 1;
fd_set fds;
if ( EGL_TRUE != eglSwapBuffers(eglDisplay, eglSurface) ) {
EGLint err = eglGetError();
ERR_PRINT("Failed eglSwapBuffers, err 0x%x\n", err);
return 0;
}
nextBO = gbm_surface_lock_front_buffer(gbmSurface);
fb = drm_fb_get_from_bo(nextBO);
if (!fb) {
ERR_PRINT("Failed to get a new framebuffer BO\n");
return 0;
}
/**
* Here you could also update drm plane layers if you want
* hw composition
*/
ret = drmModePageFlip(drm->fd, drm->encoder->crtc_id, fb->fb_id,
DRM_MODE_PAGE_FLIP_EVENT, &waiting_for_flip);
if (ret) {
ERR_PRINT("drmModePageFlip failed to queue page flip: fd %d, enc_id 0x%x, crtc_id 0x%x, fb_id 0x%x, conn_id 0x%x, curMode %s: %p -> %p: %d %s\n",
drm->fd, drm->encoder->encoder_id, drm->encoder->crtc_id, fb->fb_id,
drm->connector->connector_id, drm->current_mode->name,
lastBO, nextBO, ret, strerror(errno));
return 0;
}
while (waiting_for_flip) {
FD_ZERO(&fds);
FD_SET(0, &fds);
FD_SET(drm->fd, &fds);
ret = select(drm->fd + 1, &fds, NULL, NULL, NULL);
if (ret < 0) {
ERR_PRINT("select err: %s\n", strerror(errno));
return ret;
} else if (ret == 0) {
ERR_PRINT("select timeout!\n");
return -1;
} else if (FD_ISSET(0, &fds)) {
ERR_PRINT("user interrupted!\n");
return 0;
}
drmHandleEvent(drm->fd, &drm_event_ctx);
}
/* release last buffer to render on again: */
if( NULL != lastBO ) {
gbm_surface_release_buffer(gbmSurface, lastBO);
}
DBG_PRINT( "EGL_GBM.Window NextSwapSurface0 %p -> %p\n", lastBO, nextBO);
return (jlong) (intptr_t) nextBO;
}
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