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author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2007-10-12 21:27:47 -0400 |
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committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2007-10-12 21:27:47 -0400 |
commit | b981d8b3f5e008ff10d993be633ad00564fc22cd (patch) | |
tree | e292dc07b22308912cf6a58354a608b9e5e8e1fd /include/linux/ivtv.h | |
parent | b11d2127c4893a7315d1e16273bc8560049fa3ca (diff) | |
parent | 2b9e0aae1d50e880c58d46788e5e3ebd89d75d62 (diff) |
Merge master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:
drivers/macintosh/adbhid.c
Diffstat (limited to 'include/linux/ivtv.h')
-rw-r--r-- | include/linux/ivtv.h | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/include/linux/ivtv.h b/include/linux/ivtv.h new file mode 100644 index 000000000000..794b8daa9378 --- /dev/null +++ b/include/linux/ivtv.h | |||
@@ -0,0 +1,72 @@ | |||
1 | /* | ||
2 | Public ivtv API header | ||
3 | Copyright (C) 2003-2004 Kevin Thayer <nufan_wfk at yahoo.com> | ||
4 | Copyright (C) 2004-2007 Hans Verkuil <hverkuil@xs4all.nl> | ||
5 | |||
6 | This program is free software; you can redistribute it and/or modify | ||
7 | it under the terms of the GNU General Public License as published by | ||
8 | the Free Software Foundation; either version 2 of the License, or | ||
9 | (at your option) any later version. | ||
10 | |||
11 | This program is distributed in the hope that it will be useful, | ||
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
14 | GNU General Public License for more details. | ||
15 | |||
16 | You should have received a copy of the GNU General Public License | ||
17 | along with this program; if not, write to the Free Software | ||
18 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
19 | */ | ||
20 | |||
21 | #ifndef __LINUX_IVTV_H__ | ||
22 | #define __LINUX_IVTV_H__ | ||
23 | |||
24 | #ifdef __KERNEL__ | ||
25 | #include <linux/compiler.h> /* need __user */ | ||
26 | #else | ||
27 | #define __user | ||
28 | #endif | ||
29 | #include <linux/types.h> | ||
30 | |||
31 | /* ivtv knows several distinct output modes: MPEG streaming, | ||
32 | YUV streaming, YUV updates through user DMA and the passthrough | ||
33 | mode. | ||
34 | |||
35 | In order to clearly tell the driver that we are in user DMA | ||
36 | YUV mode you need to call IVTV_IOC_DMA_FRAME with y_source == NULL | ||
37 | first (althrough if you don't then the first time | ||
38 | DMA_FRAME is called the mode switch is done automatically). | ||
39 | |||
40 | When you close the file handle the user DMA mode is exited again. | ||
41 | |||
42 | While in one mode, you cannot use another mode (EBUSY is returned). | ||
43 | |||
44 | All this means that if you want to change the YUV interlacing | ||
45 | for the user DMA YUV mode you first need to do call IVTV_IOC_DMA_FRAME | ||
46 | with y_source == NULL before you can set the correct format using | ||
47 | VIDIOC_S_FMT. | ||
48 | |||
49 | Eventually all this should be replaced with a proper V4L2 API, | ||
50 | but for now we have to do it this way. */ | ||
51 | |||
52 | struct ivtv_dma_frame { | ||
53 | enum v4l2_buf_type type; /* V4L2_BUF_TYPE_VIDEO_OUTPUT */ | ||
54 | __u32 pixelformat; /* 0 == same as destination */ | ||
55 | void __user *y_source; /* if NULL and type == V4L2_BUF_TYPE_VIDEO_OUTPUT, | ||
56 | then just switch to user DMA YUV output mode */ | ||
57 | void __user *uv_source; /* Unused for RGB pixelformats */ | ||
58 | struct v4l2_rect src; | ||
59 | struct v4l2_rect dst; | ||
60 | __u32 src_width; | ||
61 | __u32 src_height; | ||
62 | }; | ||
63 | |||
64 | #define IVTV_IOC_DMA_FRAME _IOW ('V', BASE_VIDIOC_PRIVATE+0, struct ivtv_dma_frame) | ||
65 | |||
66 | /* These are the VBI types as they appear in the embedded VBI private packets. */ | ||
67 | #define IVTV_SLICED_TYPE_TELETEXT_B (1) | ||
68 | #define IVTV_SLICED_TYPE_CAPTION_525 (4) | ||
69 | #define IVTV_SLICED_TYPE_WSS_625 (5) | ||
70 | #define IVTV_SLICED_TYPE_VPS (7) | ||
71 | |||
72 | #endif /* _LINUX_IVTV_H */ | ||