V4L/DVB (9578): v4l core: add support for enumerating frame sizes and intervals

video_ioctl2 lacks implementation of those two ioctls:
	- VIDIOC_ENUM_FRAMESIZES and VIDIOC_ENUM_FRAMEINTERVALS

Adds implementation for those.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

2 files changed, 73 insertions, 0 deletions

diff --git a/drivers/media/video/v4l2-ioctl.c b/drivers/media/video/v4l2-ioctl.c
index 0e648cb3b39..213c4dd6f72 100644
--- a/drivers/media/video/v4l2-ioctl.c
+++ b/drivers/media/video/v4l2-ioctl.c
@@ -1747,6 +1747,73 @@ static int __video_do_ioctl(struct file *file,
                 ret = ops->vidioc_s_hw_freq_seek(file, fh, p);
                 break;
         }
+        case VIDIOC_ENUM_FRAMESIZES:
+        {
+                struct v4l2_frmsizeenum *p = arg;
+
+                if (!ops->vidioc_enum_framesizes)
+                        break;
+
+                memset(p, 0, sizeof(*p));
+
+                ret = ops->vidioc_enum_framesizes(file, fh, p);
+                dbgarg(cmd,
+                        "index=%d, pixelformat=%d, type=%d ",
+                        p->index, p->pixel_format, p->type);
+                switch (p->type) {
+                case V4L2_FRMSIZE_TYPE_DISCRETE:
+                        dbgarg2("width = %d, height=%d\n",
+                                p->discrete.width, p->discrete.height);
+                        break;
+                case V4L2_FRMSIZE_TYPE_STEPWISE:
+                        dbgarg2("min %dx%d, max %dx%d, step %dx%d\n",
+                                p->stepwise.min_width,  p->stepwise.min_height,
+                                p->stepwise.step_width, p->stepwise.step_height,
+                                p->stepwise.max_width,  p->stepwise.max_height);
+                        break;
+                case V4L2_FRMSIZE_TYPE_CONTINUOUS:
+                        dbgarg2("continuous\n");
+                        break;
+                default:
+                        dbgarg2("- Unknown type!\n");
+                }
+
+                break;
+        }
+        case VIDIOC_ENUM_FRAMEINTERVALS:
+        {
+                struct v4l2_frmivalenum *p = arg;
+
+                if (!ops->vidioc_enum_frameintervals)
+                        break;
+
+                memset(p, 0, sizeof(*p));
+
+                ret = ops->vidioc_enum_frameintervals(file, fh, p);
+                dbgarg(cmd,
+                        "index=%d, pixelformat=%d, width=%d, height=%d, type=%d ",
+                        p->index, p->pixel_format,
+                        p->width, p->height, p->type);
+                switch (p->type) {
+                case V4L2_FRMIVAL_TYPE_DISCRETE:
+                        dbgarg2("fps=%d/%d\n",
+                                p->discrete.numerator,
+                                p->discrete.denominator);
+                        break;
+                case V4L2_FRMIVAL_TYPE_STEPWISE:
+                        dbgarg2("min=%d, max=%d, step=%d\n",
+                                p->stepwise.min, p->stepwise.max,
+                                p->stepwise.step);
+                        break;
+                case V4L2_FRMIVAL_TYPE_CONTINUOUS:
+                        dbgarg2("continuous\n");
+                        break;
+                default:
+                        dbgarg2("- Unknown type!\n");
+                }
+                break;
+        }
+
         default:
         {
                 if (!ops->vidioc_default)
diff --git a/include/media/v4l2-ioctl.h b/include/media/v4l2-ioctl.h
index f5985724c45..c884432f938 100644
--- a/include/media/v4l2-ioctl.h
+++ b/include/media/v4l2-ioctl.h
@@ -232,6 +232,12 @@ struct v4l2_ioctl_ops {
         int (*vidioc_g_chip_ident)     (struct file *file, void *fh,
                                         struct v4l2_chip_ident *chip);
 
+        int (*vidioc_enum_framesizes)   (struct file *file, void *fh,
+                                         struct v4l2_frmsizeenum *fsize);
+
+        int (*vidioc_enum_frameintervals) (struct file *file, void *fh,
+                                           struct v4l2_frmivalenum *fival);
+
         /* For other private ioctls */
         int (*vidioc_default)          (struct file *file, void *fh,
                                         int cmd, void *arg);