V4L/DVB (5270): Add VIDIOC_G_ENC_INDEX ioctl

The VIDIOC_G_ENC_INDEX ioctl can obtain the MPEG index from an MPEG
encoder.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

2 files changed, 32 insertions, 0 deletions

diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h
index e3ab047f90ef..42cfdd2d50db 100644
--- a/include/linux/videodev2.h
+++ b/include/linux/videodev2.h
@@ -1193,6 +1193,35 @@ struct v4l2_audioout
 };
 
 /*
+ *      M P E G   I N D E X
+ *
+ *      NOTE: EXPERIMENTAL API
+ */
+#if 1
+#define V4L2_ENC_IDX_FRAME_I    (0)
+#define V4L2_ENC_IDX_FRAME_P    (1)
+#define V4L2_ENC_IDX_FRAME_B    (2)
+#define V4L2_ENC_IDX_FRAME_MASK (0xf)
+
+struct v4l2_enc_idx_entry {
+        __u64 offset;
+        __u64 pts;
+        __u32 length;
+        __u32 flags;
+        __u32 reserved[2];
+};
+
+#define V4L2_ENC_IDX_ENTRIES (64)
+struct v4l2_enc_idx {
+        __u32 entries;
+        __u32 entries_cap;
+        __u32 reserved[4];
+        struct v4l2_enc_idx_entry entry[V4L2_ENC_IDX_ENTRIES];
+};
+#endif
+
+
+/*
  *      D A T A   S E R V I C E S   ( V B I )
  *
  *      Data services API by Michael Schimek
@@ -1385,6 +1414,7 @@ struct v4l2_register {
 #if 1
 #define VIDIOC_ENUM_FRAMESIZES  _IOWR ('V', 74, struct v4l2_frmsizeenum)
 #define VIDIOC_ENUM_FRAMEINTERVALS      _IOWR ('V', 75, struct v4l2_frmivalenum)
+#define VIDIOC_G_ENC_INDEX      _IOR  ('V', 76, struct v4l2_enc_idx)
 #endif
 /* only implemented if CONFIG_VIDEO_ADV_DEBUG is defined */
 #define VIDIOC_DBG_S_REGISTER   _IOW ('d', 100, struct v4l2_register)
diff --git a/include/media/v4l2-dev.h b/include/media/v4l2-dev.h
index aeec56992ef5..e5e87e44c585 100644
--- a/include/media/v4l2-dev.h
+++ b/include/media/v4l2-dev.h
@@ -271,6 +271,8 @@ struct video_device
                                         struct v4l2_jpegcompression *a);
         int (*vidioc_s_jpegcomp)       (struct file *file, void *fh,
                                         struct v4l2_jpegcompression *a);
+        int (*vidioc_g_enc_index)      (struct file *file, void *fh,
+                                        struct v4l2_enc_idx *a);
 
         /* Stream type-dependent parameter ioctls */
         int (*vidioc_g_parm)           (struct file *file, void *fh,