struct drm_device { struct drm_mode_create_dumb create ; //创建的dumb struct drm_mode_map_dumb map; //内存映射结构体 }; static int drm_create_fb(struct drm_device *bo) { /* create a dumb-buffer, the pixel format is XRGB888 */ bo->create.width = bo->width; bo->create.height...
static int modeset_create_fb(int fd, struct modeset_dev *dev) { struct drm_mode_create_dumb creq; struct drm_mode_destroy_dumb dreq; struct drm_mode_map_dumb mreq; int ret; /* create dumb buffer */ memset(&creq, 0, sizeof(creq)); creq.width = dev->width; creq.height = d...
static int modeset_create_fb(int fd, struct buffer_object *bo) { struct drm_mode_create_dumb create = {}; struct drm_mode_map_dumb map = {}; create.width = bo->width; create.height = bo->height; create.bpp = 32; drmIoctl(fd, DRM_IOCTL_MODE_CREATE_DUMB, &create); bo->pitch...
vdisplay; drm_create_fb(&buf); drmSetClientCap(fd, DRM_CLIENT_CAP_ATOMIC, 1); /* get connector properties */ props = drmModeObjectGetProperties(fd, conn_id, DRM_MODE_OBJECT_CONNECTOR); printf("/---conn_Property---/\n"); get_property(fd, props); printf("\n"); pc.property...
MODE_CREATE_DUMB failed: Invalid argument KMS: DRM_IOCTL_MODE_CREATE_DUMB failed: Invalid argument /GstPipeline:pipeline0/GstVideoTestSrc:videotestsrc0.GstPad:src: caps = video/x-raw, format=(string)P010_10LE, width=(int)1920, height=(int)1200, framerate=(fraction)30/1, multiview-mode...
struct drm_mode_map_dumb map_req = {}; fd = open("/dev/dri/card0", O_RDWR); create_req.bpp = 32; create_req.width = 240; create_req.height = 320; drmIoctl(fd, DRM_IOCTL_MODE_CREATE_DUMB, &create_req); printf("create dumb: handle = %u, pitch = %u, size = %llu\n", ...
fourcc = DRM_FORMAT_ARGB8888; ret = drmIoctl(fd, DRM_IOCTL_MODE_CREATE_DUMB, &creq); if (ret < 0) { fprintf(stderr, "cannot create dumb buffer (%d): %m\n", errno); return -errno; } 3.7 提交DRM请求 代码调用实例如下: int drmModeAtomicCommit(int fd, drmModeAtomicReqPtr req,...
创建DUMB Buffer: ret=drmIoctl(fd,DRM_IOCTL_MODE_CREATE_DUMB,&creq);if(ret<0){fprintf(stderr,"cannot create dumb buffer (%d): %m\n",errno);return-errno;} 添加FrameBuffer: /* create framebuffer object for the dumb-buffer */ret=drmModeAddFB(fd,dev->width,dev->height,24,32,dev->...
struct drm_mode_create_dumb arg; int handle, size, pitch; int ret; memset(&arg, 0, sizeof(arg)); arg.bpp = bpp; arg.width = width; arg.height = height; ret = drmIoctl(bo->fd, DRM_IOCTL_MODE_CREATE_DUMB, &arg); if (ret) { ...
1.新建Dumb对象。 2.Dumb新建frambuffer 对象。 3.通过 DRM_IOCTL_MODE_MAP_DUMB 来获取DUMB的 offset。 4.映射Dumb到用户空间。 Prime 示例: static int modeset_create_fb(int fd, struct modeset_dev *dev) { struct drm_mode_destroy_dumb dreq; ...