V4L/DVB (11042): v4l2-api: Add definitions for V4L2_MPEG_STREAM_VBI_FMT_IVTV payloads

This addition to the v4l2-api add definitions for the constants and
data structures used for sliced VBI data insertion into MPEG streams triggered
by V4L2_MPEG_STREAM_VBI_FMT_IVTV.  This simply declares what the ivtv and
cx18 drivers and MythTV have already been doing and provides a proper data
structure definition to user space.

Signed-off-by: Andy Walls <awalls@radix.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/include/linux/ivtv.h b/include/linux/ivtv.h
index f2720280b9ec5e12d596baf2e4e8a63a890dc364..062d20f74322795c08fc7651409259f7387c4fe4 100644 (file)
--- a/include/linux/ivtv.h
+++ b/include/linux/ivtv.h
@@ -60,10 +60,10 @@ struct ivtv_dma_frame {
 
 #define IVTV_IOC_DMA_FRAME  _IOW ('V', BASE_VIDIOC_PRIVATE+0, struct ivtv_dma_frame)
 
-/* These are the VBI types as they appear in the embedded VBI private packets. */
-#define IVTV_SLICED_TYPE_TELETEXT_B     (1)
-#define IVTV_SLICED_TYPE_CAPTION_525    (4)
-#define IVTV_SLICED_TYPE_WSS_625        (5)
-#define IVTV_SLICED_TYPE_VPS            (7)
+/* Deprecated defines: applications should use the defines from videodev2.h */
+#define IVTV_SLICED_TYPE_TELETEXT_B     V4L2_MPEG_VBI_IVTV_TELETEXT_B
+#define IVTV_SLICED_TYPE_CAPTION_525    V4L2_MPEG_VBI_IVTV_CAPTION_525
+#define IVTV_SLICED_TYPE_WSS_625        V4L2_MPEG_VBI_IVTV_WSS_625
+#define IVTV_SLICED_TYPE_VPS            V4L2_MPEG_VBI_IVTV_VPS
 
 #endif /* _LINUX_IVTV_H */

diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h
index 78ba0755ffb3ec87afa171af90c7b4b94c2a34d9..61f1a4921afdca55db7ee6a9682120b40759b435 100644 (file)
--- a/include/linux/videodev2.h
+++ b/include/linux/videodev2.h
@@ -1347,6 +1347,53 @@ struct v4l2_sliced_vbi_data {
        __u8    data[48];
 };
 
+/*
+ * Sliced VBI data inserted into MPEG Streams
+ */
+
+/*
+ * V4L2_MPEG_STREAM_VBI_FMT_IVTV:
+ *
+ * Structure of payload contained in an MPEG 2 Private Stream 1 PES Packet in an
+ * MPEG-2 Program Pack that contains V4L2_MPEG_STREAM_VBI_FMT_IVTV Sliced VBI
+ * data
+ *
+ * Note, the MPEG-2 Program Pack and Private Stream 1 PES packet header
+ * definitions are not included here.  See the MPEG-2 specifications for details
+ * on these headers.
+ */
+
+/* Line type IDs */
+#define V4L2_MPEG_VBI_IVTV_TELETEXT_B     (1)
+#define V4L2_MPEG_VBI_IVTV_CAPTION_525    (4)
+#define V4L2_MPEG_VBI_IVTV_WSS_625        (5)
+#define V4L2_MPEG_VBI_IVTV_VPS            (7)
+
+struct v4l2_mpeg_vbi_itv0_line {
+       __u8 id;        /* One of V4L2_MPEG_VBI_IVTV_* above */
+       __u8 data[42];  /* Sliced VBI data for the line */
+} __attribute__ ((packed));
+
+struct v4l2_mpeg_vbi_itv0 {
+       __le32 linemask[2]; /* Bitmasks of VBI service lines present */
+       struct v4l2_mpeg_vbi_itv0_line line[35];
+} __attribute__ ((packed));
+
+struct v4l2_mpeg_vbi_ITV0 {
+       struct v4l2_mpeg_vbi_itv0_line line[36];
+} __attribute__ ((packed));
+
+#define V4L2_MPEG_VBI_IVTV_MAGIC0      "itv0"
+#define V4L2_MPEG_VBI_IVTV_MAGIC1      "ITV0"
+
+struct v4l2_mpeg_vbi_fmt_ivtv {
+       __u8 magic[4];
+       union {
+               struct v4l2_mpeg_vbi_itv0 itv0;
+               struct v4l2_mpeg_vbi_ITV0 ITV0;
+       };
+} __attribute__ ((packed));
+
 /*
  *     A G G R E G A T E   S T R U C T U R E S
  */