diff options
Diffstat (limited to 'drivers/media/video/v4l2-ioctl.c')
| -rw-r--r-- | drivers/media/video/v4l2-ioctl.c | 120 |
1 files changed, 114 insertions, 6 deletions
diff --git a/drivers/media/video/v4l2-ioctl.c b/drivers/media/video/v4l2-ioctl.c index e1da8fc9dd2f..77feeb67e2db 100644 --- a/drivers/media/video/v4l2-ioctl.c +++ b/drivers/media/video/v4l2-ioctl.c @@ -238,6 +238,8 @@ static const char *v4l2_ioctls[] = { [_IOC_NR(VIDIOC_CROPCAP)] = "VIDIOC_CROPCAP", [_IOC_NR(VIDIOC_G_CROP)] = "VIDIOC_G_CROP", [_IOC_NR(VIDIOC_S_CROP)] = "VIDIOC_S_CROP", + [_IOC_NR(VIDIOC_G_SELECTION)] = "VIDIOC_G_SELECTION", + [_IOC_NR(VIDIOC_S_SELECTION)] = "VIDIOC_S_SELECTION", [_IOC_NR(VIDIOC_G_JPEGCOMP)] = "VIDIOC_G_JPEGCOMP", [_IOC_NR(VIDIOC_S_JPEGCOMP)] = "VIDIOC_S_JPEGCOMP", [_IOC_NR(VIDIOC_QUERYSTD)] = "VIDIOC_QUERYSTD", @@ -1547,11 +1549,32 @@ static long __video_do_ioctl(struct file *file, { struct v4l2_crop *p = arg; - if (!ops->vidioc_g_crop) + if (!ops->vidioc_g_crop && !ops->vidioc_g_selection) break; dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names)); - ret = ops->vidioc_g_crop(file, fh, p); + + if (ops->vidioc_g_crop) { + ret = ops->vidioc_g_crop(file, fh, p); + } else { + /* simulate capture crop using selection api */ + struct v4l2_selection s = { + .type = p->type, + }; + + /* crop means compose for output devices */ + if (V4L2_TYPE_IS_OUTPUT(p->type)) + s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE; + else + s.target = V4L2_SEL_TGT_CROP_ACTIVE; + + ret = ops->vidioc_g_selection(file, fh, &s); + + /* copying results to old structure on success */ + if (!ret) + p->c = s.r; + } + if (!ret) dbgrect(vfd, "", &p->c); break; @@ -1560,15 +1583,65 @@ static long __video_do_ioctl(struct file *file, { struct v4l2_crop *p = arg; - if (!ops->vidioc_s_crop) + if (!ops->vidioc_s_crop && !ops->vidioc_s_selection) break; + if (ret_prio) { ret = ret_prio; break; } dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names)); dbgrect(vfd, "", &p->c); - ret = ops->vidioc_s_crop(file, fh, p); + + if (ops->vidioc_s_crop) { + ret = ops->vidioc_s_crop(file, fh, p); + } else { + /* simulate capture crop using selection api */ + struct v4l2_selection s = { + .type = p->type, + .r = p->c, + }; + + /* crop means compose for output devices */ + if (V4L2_TYPE_IS_OUTPUT(p->type)) + s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE; + else + s.target = V4L2_SEL_TGT_CROP_ACTIVE; + + ret = ops->vidioc_s_selection(file, fh, &s); + } + break; + } + case VIDIOC_G_SELECTION: + { + struct v4l2_selection *p = arg; + + if (!ops->vidioc_g_selection) + break; + + dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names)); + + ret = ops->vidioc_g_selection(file, fh, p); + if (!ret) + dbgrect(vfd, "", &p->r); + break; + } + case VIDIOC_S_SELECTION: + { + struct v4l2_selection *p = arg; + + if (!ops->vidioc_s_selection) + break; + + if (ret_prio) { + ret = ret_prio; + break; + } + + dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names)); + dbgrect(vfd, "", &p->r); + + ret = ops->vidioc_s_selection(file, fh, p); break; } case VIDIOC_CROPCAP: @@ -1576,11 +1649,42 @@ static long __video_do_ioctl(struct file *file, struct v4l2_cropcap *p = arg; /*FIXME: Should also show v4l2_fract pixelaspect */ - if (!ops->vidioc_cropcap) + if (!ops->vidioc_cropcap && !ops->vidioc_g_selection) break; dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names)); - ret = ops->vidioc_cropcap(file, fh, p); + if (ops->vidioc_cropcap) { + ret = ops->vidioc_cropcap(file, fh, p); + } else { + struct v4l2_selection s = { .type = p->type }; + + /* obtaining bounds */ + if (V4L2_TYPE_IS_OUTPUT(p->type)) + s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS; + else + s.target = V4L2_SEL_TGT_CROP_BOUNDS; + + ret = ops->vidioc_g_selection(file, fh, &s); + if (ret) + break; + p->bounds = s.r; + + /* obtaining defrect */ + if (V4L2_TYPE_IS_OUTPUT(p->type)) + s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT; + else + s.target = V4L2_SEL_TGT_CROP_DEFAULT; + + ret = ops->vidioc_g_selection(file, fh, &s); + if (ret) + break; + p->defrect = s.r; + + /* setting trivial pixelaspect */ + p->pixelaspect.numerator = 1; + p->pixelaspect.denominator = 1; + } + if (!ret) { dbgrect(vfd, "bounds ", &p->bounds); dbgrect(vfd, "defrect ", &p->defrect); @@ -2226,6 +2330,10 @@ static int check_array_args(unsigned int cmd, void *parg, size_t *array_size, struct v4l2_ext_controls *ctrls = parg; if (ctrls->count != 0) { + if (ctrls->count > V4L2_CID_MAX_CTRLS) { + ret = -EINVAL; + break; + } *user_ptr = (void __user *)ctrls->controls; *kernel_ptr = (void *)&ctrls->controls; *array_size = sizeof(struct v4l2_ext_control) |