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

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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>
This commit is contained in:
Andy Walls 2009-03-14 17:06:07 -03:00 committed by Mauro Carvalho Chehab
parent 77ac0baf24
commit 6273fda6e3
2 changed files with 52 additions and 5 deletions
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10
include/linux/ivtv.h
View File

@ -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 */

47
include/linux/videodev2.h
View File

@ -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
*/