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Based on kernel version 3.15.4. Page generated on 2014-07-07 09:02 EST.

1	<title>DVB Video Device</title>
2	<para>The DVB video device controls the MPEG2 video decoder of the DVB hardware. It
3	can be accessed through <emphasis role="tt">/dev/dvb/adapter0/video0</emphasis>. Data types and and
4	ioctl definitions can be accessed by including <emphasis role="tt">linux/dvb/video.h</emphasis> in your
5	application.
6	</para>
7	<para>Note that the DVB video device only controls decoding of the MPEG video stream, not
8	its presentation on the TV or computer screen. On PCs this is typically handled by an
9	associated video4linux device, e.g. <emphasis role="tt">/dev/video</emphasis>, which allows scaling and defining output
10	windows.
11	</para>
12	<para>Some DVB cards don&#8217;t have their own MPEG decoder, which results in the omission of
13	the audio and video device as well as the video4linux device.
14	</para>
15	<para>The ioctls that deal with SPUs (sub picture units) and navigation packets are only
16	supported on some MPEG decoders made for DVD playback.
17	</para>
18	<para>
19	These ioctls were also used by V4L2 to control MPEG decoders implemented in V4L2. The use
20	of these ioctls for that purpose has been made obsolete and proper V4L2 ioctls or controls
21	have been created to replace that functionality.</para>
22	<section id="video_types">
23	<title>Video Data Types</title>
24	
25	<section id="video-format-t">
26	<title>video_format_t</title>
27	<para>The <emphasis role="tt">video_format_t</emphasis> data type defined by
28	</para>
29	<programlisting>
30	typedef enum {
31		VIDEO_FORMAT_4_3,     /&#x22C6; Select 4:3 format &#x22C6;/
32		VIDEO_FORMAT_16_9,    /&#x22C6; Select 16:9 format. &#x22C6;/
33		VIDEO_FORMAT_221_1    /&#x22C6; 2.21:1 &#x22C6;/
34	} video_format_t;
35	</programlisting>
36	<para>is used in the VIDEO_SET_FORMAT function (??) to tell the driver which aspect ratio
37	the output hardware (e.g. TV) has. It is also used in the data structures video_status
38	(??) returned by VIDEO_GET_STATUS (??) and video_event (??) returned by
39	VIDEO_GET_EVENT (??) which report about the display format of the current video
40	stream.
41	</para>
42	</section>
43	
44	<section id="video-displayformat-t">
45	<title>video_displayformat_t</title>
46	<para>In case the display format of the video stream and of the display hardware differ the
47	application has to specify how to handle the cropping of the picture. This can be done using
48	the VIDEO_SET_DISPLAY_FORMAT call (??) which accepts
49	</para>
50	<programlisting>
51	typedef enum {
52		VIDEO_PAN_SCAN,       /&#x22C6; use pan and scan format &#x22C6;/
53		VIDEO_LETTER_BOX,     /&#x22C6; use letterbox format &#x22C6;/
54		VIDEO_CENTER_CUT_OUT  /&#x22C6; use center cut out format &#x22C6;/
55	} video_displayformat_t;
56	</programlisting>
57	<para>as argument.
58	</para>
59	</section>
60	
61	<section id="video-stream-source-t">
62	<title>video_stream_source_t</title>
63	<para>The video stream source is set through the VIDEO_SELECT_SOURCE call and can take
64	the following values, depending on whether we are replaying from an internal (demuxer) or
65	external (user write) source.
66	</para>
67	<programlisting>
68	typedef enum {
69		VIDEO_SOURCE_DEMUX, /&#x22C6; Select the demux as the main source &#x22C6;/
70		VIDEO_SOURCE_MEMORY /&#x22C6; If this source is selected, the stream
71				       comes from the user through the write
72				       system call &#x22C6;/
73	} video_stream_source_t;
74	</programlisting>
75	<para>VIDEO_SOURCE_DEMUX selects the demultiplexer (fed either by the frontend or the
76	DVR device) as the source of the video stream. If VIDEO_SOURCE_MEMORY
77	is selected the stream comes from the application through the <emphasis role="tt">write()</emphasis> system
78	call.
79	</para>
80	</section>
81	
82	<section id="video-play-state-t">
83	<title>video_play_state_t</title>
84	<para>The following values can be returned by the VIDEO_GET_STATUS call representing the
85	state of video playback.
86	</para>
87	<programlisting>
88	typedef enum {
89		VIDEO_STOPPED, /&#x22C6; Video is stopped &#x22C6;/
90		VIDEO_PLAYING, /&#x22C6; Video is currently playing &#x22C6;/
91		VIDEO_FREEZED  /&#x22C6; Video is freezed &#x22C6;/
92	} video_play_state_t;
93	</programlisting>
94	</section>
95	
96	<section id="video-command">
97	<title>struct video_command</title>
98	<para>The structure must be zeroed before use by the application
99	This ensures it can be extended safely in the future.</para>
100	<programlisting>
101	struct video_command {
102		__u32 cmd;
103		__u32 flags;
104		union {
105			struct {
106				__u64 pts;
107			} stop;
108	
109			struct {
110				/&#x22C6; 0 or 1000 specifies normal speed,
111				   1 specifies forward single stepping,
112				   -1 specifies backward single stepping,
113				   &gt;>1: playback at speed/1000 of the normal speed,
114				   &lt;-1: reverse playback at (-speed/1000) of the normal speed. &#x22C6;/
115				__s32 speed;
116				__u32 format;
117			} play;
118	
119			struct {
120				__u32 data[16];
121			} raw;
122		};
123	};
124	</programlisting>
125	</section>
126	
127	<section id="video-size-t">
128	<title>video_size_t</title>
129	<programlisting>
130	typedef struct {
131		int w;
132		int h;
133		video_format_t aspect_ratio;
134	} video_size_t;
135	</programlisting>
136	</section>
137	
138	
139	<section id="video-event">
140	<title>struct video_event</title>
141	<para>The following is the structure of a video event as it is returned by the VIDEO_GET_EVENT
142	call.
143	</para>
144	<programlisting>
145	struct video_event {
146		__s32 type;
147	#define VIDEO_EVENT_SIZE_CHANGED	1
148	#define VIDEO_EVENT_FRAME_RATE_CHANGED	2
149	#define VIDEO_EVENT_DECODER_STOPPED 	3
150	#define VIDEO_EVENT_VSYNC 		4
151		__kernel_time_t timestamp;
152		union {
153			video_size_t size;
154			unsigned int frame_rate;	/&#x22C6; in frames per 1000sec &#x22C6;/
155			unsigned char vsync_field;	/&#x22C6; unknown/odd/even/progressive &#x22C6;/
156		} u;
157	};
158	</programlisting>
159	</section>
160	
161	<section id="video-status">
162	<title>struct video_status</title>
163	<para>The VIDEO_GET_STATUS call returns the following structure informing about various
164	states of the playback operation.
165	</para>
166	<programlisting>
167	struct video_status {
168		int                   video_blank;   /&#x22C6; blank video on freeze? &#x22C6;/
169		video_play_state_t    play_state;    /&#x22C6; current state of playback &#x22C6;/
170		video_stream_source_t stream_source; /&#x22C6; current source (demux/memory) &#x22C6;/
171		video_format_t        video_format;  /&#x22C6; current aspect ratio of stream &#x22C6;/
172		video_displayformat_t display_format;/&#x22C6; selected cropping mode &#x22C6;/
173	};
174	</programlisting>
175	<para>If video_blank is set video will be blanked out if the channel is changed or if playback is
176	stopped. Otherwise, the last picture will be displayed. play_state indicates if the video is
177	currently frozen, stopped, or being played back. The stream_source corresponds to the seleted
178	source for the video stream. It can come either from the demultiplexer or from memory.
179	The video_format indicates the aspect ratio (one of 4:3 or 16:9) of the currently
180	played video stream. Finally, display_format corresponds to the selected cropping
181	mode in case the source video format is not the same as the format of the output
182	device.
183	</para>
184	</section>
185	
186	<section id="video-still-picture">
187	<title>struct video_still_picture</title>
188	<para>An I-frame displayed via the VIDEO_STILLPICTURE call is passed on within the
189	following structure.
190	</para>
191	<programlisting>
192	/&#x22C6; pointer to and size of a single iframe in memory &#x22C6;/
193	struct video_still_picture {
194		char &#x22C6;iFrame;        /&#x22C6; pointer to a single iframe in memory &#x22C6;/
195		int32_t size;
196	};
197	</programlisting>
198	</section>
199	
200	<section id="video_caps">
201	<title>video capabilities</title>
202	<para>A call to VIDEO_GET_CAPABILITIES returns an unsigned integer with the following
203	bits set according to the hardwares capabilities.
204	</para>
205	<programlisting>
206	 /&#x22C6; bit definitions for capabilities: &#x22C6;/
207	 /&#x22C6; can the hardware decode MPEG1 and/or MPEG2? &#x22C6;/
208	 #define VIDEO_CAP_MPEG1   1
209	 #define VIDEO_CAP_MPEG2   2
210	 /&#x22C6; can you send a system and/or program stream to video device?
211	    (you still have to open the video and the audio device but only
212	     send the stream to the video device) &#x22C6;/
213	 #define VIDEO_CAP_SYS     4
214	 #define VIDEO_CAP_PROG    8
215	 /&#x22C6; can the driver also handle SPU, NAVI and CSS encoded data?
216	    (CSS API is not present yet) &#x22C6;/
217	 #define VIDEO_CAP_SPU    16
218	 #define VIDEO_CAP_NAVI   32
219	 #define VIDEO_CAP_CSS    64
220	</programlisting>
221	</section>
222	
223	<section id="video-system">
224	<title>video_system_t</title>
225	<para>A call to VIDEO_SET_SYSTEM sets the desired video system for TV output. The
226	following system types can be set:
227	</para>
228	<programlisting>
229	typedef enum {
230		 VIDEO_SYSTEM_PAL,
231		 VIDEO_SYSTEM_NTSC,
232		 VIDEO_SYSTEM_PALN,
233		 VIDEO_SYSTEM_PALNc,
234		 VIDEO_SYSTEM_PALM,
235		 VIDEO_SYSTEM_NTSC60,
236		 VIDEO_SYSTEM_PAL60,
237		 VIDEO_SYSTEM_PALM60
238	} video_system_t;
239	</programlisting>
240	</section>
241	
242	<section id="video-highlight">
243	<title>struct video_highlight</title>
244	<para>Calling the ioctl VIDEO_SET_HIGHLIGHTS posts the SPU highlight information. The
245	call expects the following format for that information:
246	</para>
247	<programlisting>
248	 typedef
249	 struct video_highlight {
250		 boolean active;      /&#x22C6;    1=show highlight, 0=hide highlight &#x22C6;/
251		 uint8_t contrast1;   /&#x22C6;    7- 4  Pattern pixel contrast &#x22C6;/
252				      /&#x22C6;    3- 0  Background pixel contrast &#x22C6;/
253		 uint8_t contrast2;   /&#x22C6;    7- 4  Emphasis pixel-2 contrast &#x22C6;/
254				      /&#x22C6;    3- 0  Emphasis pixel-1 contrast &#x22C6;/
255		 uint8_t color1;      /&#x22C6;    7- 4  Pattern pixel color &#x22C6;/
256				      /&#x22C6;    3- 0  Background pixel color &#x22C6;/
257		 uint8_t color2;      /&#x22C6;    7- 4  Emphasis pixel-2 color &#x22C6;/
258				      /&#x22C6;    3- 0  Emphasis pixel-1 color &#x22C6;/
259		 uint32_t ypos;       /&#x22C6;   23-22  auto action mode &#x22C6;/
260				      /&#x22C6;   21-12  start y &#x22C6;/
261				      /&#x22C6;    9- 0  end y &#x22C6;/
262		 uint32_t xpos;       /&#x22C6;   23-22  button color number &#x22C6;/
263				      /&#x22C6;   21-12  start x &#x22C6;/
264				      /&#x22C6;    9- 0  end x &#x22C6;/
265	 } video_highlight_t;
266	</programlisting>
267	
268	</section>
269	<section id="video-spu">
270	<title>struct video_spu</title>
271	<para>Calling VIDEO_SET_SPU deactivates or activates SPU decoding, according to the
272	following format:
273	</para>
274	<programlisting>
275	 typedef
276	 struct video_spu {
277		 boolean active;
278		 int stream_id;
279	 } video_spu_t;
280	</programlisting>
281	
282	</section>
283	<section id="video-spu-palette">
284	<title>struct video_spu_palette</title>
285	<para>The following structure is used to set the SPU palette by calling VIDEO_SPU_PALETTE:
286	</para>
287	<programlisting>
288	 typedef
289	 struct video_spu_palette {
290		 int length;
291		 uint8_t &#x22C6;palette;
292	 } video_spu_palette_t;
293	</programlisting>
294	
295	</section>
296	<section id="video-navi-pack">
297	<title>struct video_navi_pack</title>
298	<para>In order to get the navigational data the following structure has to be passed to the ioctl
299	VIDEO_GET_NAVI:
300	</para>
301	<programlisting>
302	 typedef
303	 struct video_navi_pack {
304		 int length;         /&#x22C6; 0 ... 1024 &#x22C6;/
305		 uint8_t data[1024];
306	 } video_navi_pack_t;
307	</programlisting>
308	</section>
309	
310	
311	<section id="video-attributes-t">
312	<title>video_attributes_t</title>
313	<para>The following attributes can be set by a call to VIDEO_SET_ATTRIBUTES:
314	</para>
315	<programlisting>
316	 typedef uint16_t video_attributes_t;
317	 /&#x22C6;   bits: descr. &#x22C6;/
318	 /&#x22C6;   15-14 Video compression mode (0=MPEG-1, 1=MPEG-2) &#x22C6;/
319	 /&#x22C6;   13-12 TV system (0=525/60, 1=625/50) &#x22C6;/
320	 /&#x22C6;   11-10 Aspect ratio (0=4:3, 3=16:9) &#x22C6;/
321	 /&#x22C6;    9- 8 permitted display mode on 4:3 monitor (0=both, 1=only pan-sca &#x22C6;/
322	 /&#x22C6;    7    line 21-1 data present in GOP (1=yes, 0=no) &#x22C6;/
323	 /&#x22C6;    6    line 21-2 data present in GOP (1=yes, 0=no) &#x22C6;/
324	 /&#x22C6;    5- 3 source resolution (0=720x480/576, 1=704x480/576, 2=352x480/57 &#x22C6;/
325	 /&#x22C6;    2    source letterboxed (1=yes, 0=no) &#x22C6;/
326	 /&#x22C6;    0    film/camera mode (0=camera, 1=film (625/50 only)) &#x22C6;/
327	</programlisting>
328	</section></section>
329	
330	
331	<section id="video_function_calls">
332	<title>Video Function Calls</title>
333	
334	
335	<section id="video_fopen">
336	<title>open()</title>
337	<para>DESCRIPTION
338	</para>
339	<informaltable><tgroup cols="1"><tbody><row><entry
340	 align="char">
341	<para>This system call opens a named video device (e.g. /dev/dvb/adapter0/video0)
342	 for subsequent use.</para>
343	<para>When an open() call has succeeded, the device will be ready for use.
344	 The significance of blocking or non-blocking mode is described in the
345	 documentation for functions where there is a difference. It does not affect the
346	 semantics of the open() call itself. A device opened in blocking mode can later
347	 be put into non-blocking mode (and vice versa) using the F_SETFL command
348	 of the fcntl system call. This is a standard system call, documented in the Linux
349	 manual page for fcntl. Only one user can open the Video Device in O_RDWR
350	 mode. All other attempts to open the device in this mode will fail, and an
351	 error-code will be returned. If the Video Device is opened in O_RDONLY
352	 mode, the only ioctl call that can be used is VIDEO_GET_STATUS. All other
353	 call will return an error code.</para>
354	</entry>
355	 </row></tbody></tgroup></informaltable>
356	
357	<para>SYNOPSIS
358	</para>
359	<informaltable><tgroup cols="1"><tbody><row><entry
360	 align="char">
361	<para>int open(const char &#x22C6;deviceName, int flags);</para>
362	</entry>
363	 </row></tbody></tgroup></informaltable>
364	<para>PARAMETERS
365	</para>
366	<informaltable><tgroup cols="2"><tbody><row><entry
367	 align="char">
368	<para>const char
369	 *deviceName</para>
370	</entry><entry
371	 align="char">
372	<para>Name of specific video device.</para>
373	</entry>
374	 </row><row><entry
375	 align="char">
376	<para>int flags</para>
377	</entry><entry
378	 align="char">
379	<para>A bit-wise OR of the following flags:</para>
380	</entry>
381	 </row><row><entry
382	 align="char">
383	</entry><entry
384	 align="char">
385	<para>O_RDONLY read-only access</para>
386	</entry>
387	 </row><row><entry
388	 align="char">
389	</entry><entry
390	 align="char">
391	<para>O_RDWR read/write access</para>
392	</entry>
393	 </row><row><entry
394	 align="char">
395	</entry><entry
396	 align="char">
397	<para>O_NONBLOCK open in non-blocking mode</para>
398	</entry>
399	 </row><row><entry
400	 align="char">
401	</entry><entry
402	 align="char">
403	<para>(blocking mode is the default)</para>
404	</entry>
405	 </row></tbody></tgroup></informaltable>
406	<para>RETURN VALUE</para>
407	<informaltable><tgroup cols="2"><tbody><row><entry
408	 align="char">
409	<para>ENODEV</para>
410	</entry><entry
411	 align="char">
412	<para>Device driver not loaded/available.</para>
413	</entry>
414	 </row><row><entry
415	 align="char">
416	<para>EINTERNAL</para>
417	</entry><entry
418	 align="char">
419	<para>Internal error.</para>
420	</entry>
421	 </row><row><entry
422	 align="char">
423	<para>EBUSY</para>
424	</entry><entry
425	 align="char">
426	<para>Device or resource busy.</para>
427	</entry>
428	 </row><row><entry
429	 align="char">
430	<para>EINVAL</para>
431	</entry><entry
432	 align="char">
433	<para>Invalid argument.</para>
434	</entry>
435	 </row></tbody></tgroup></informaltable>
436	
437	</section>
438	<section id="video_fclose">
439	<title>close()</title>
440	<para>DESCRIPTION
441	</para>
442	<informaltable><tgroup cols="1"><tbody><row><entry
443	 align="char">
444	<para>This system call closes a previously opened video device.</para>
445	</entry>
446	 </row></tbody></tgroup></informaltable>
447	<para>SYNOPSIS
448	</para>
449	<informaltable><tgroup cols="1"><tbody><row><entry
450	 align="char">
451	<para>int close(int fd);</para>
452	</entry>
453	 </row></tbody></tgroup></informaltable>
454	<para>PARAMETERS
455	</para>
456	<informaltable><tgroup cols="2"><tbody><row><entry
457	 align="char">
458	<para>int fd</para>
459	</entry><entry
460	 align="char">
461	<para>File descriptor returned by a previous call to open().</para>
462	</entry>
463	 </row></tbody></tgroup></informaltable>
464	<para>RETURN VALUE</para>
465	<informaltable><tgroup cols="2"><tbody><row><entry
466	 align="char">
467	<para>EBADF</para>
468	</entry><entry
469	 align="char">
470	<para>fd is not a valid open file descriptor.</para>
471	</entry>
472	 </row></tbody></tgroup></informaltable>
473	
474	</section>
475	<section id="video_fwrite">
476	<title>write()</title>
477	<para>DESCRIPTION
478	</para>
479	<informaltable><tgroup cols="1"><tbody><row><entry
480	 align="char">
481	<para>This system call can only be used if VIDEO_SOURCE_MEMORY is selected
482	 in the ioctl call VIDEO_SELECT_SOURCE. The data provided shall be in
483	 PES format, unless the capability allows other formats. If O_NONBLOCK is
484	 not specified the function will block until buffer space is available. The amount
485	 of data to be transferred is implied by count.</para>
486	</entry>
487	 </row></tbody></tgroup></informaltable>
488	<para>SYNOPSIS
489	</para>
490	<informaltable><tgroup cols="1"><tbody><row><entry
491	 align="char">
492	<para>size_t write(int fd, const void &#x22C6;buf, size_t count);</para>
493	</entry>
494	 </row></tbody></tgroup></informaltable>
495	<para>PARAMETERS
496	</para>
497	<informaltable><tgroup cols="2"><tbody><row><entry
498	 align="char">
499	<para>int fd</para>
500	</entry><entry
501	 align="char">
502	<para>File descriptor returned by a previous call to open().</para>
503	</entry>
504	 </row><row><entry
505	 align="char">
506	<para>void *buf</para>
507	</entry><entry
508	 align="char">
509	<para>Pointer to the buffer containing the PES data.</para>
510	</entry>
511	 </row><row><entry
512	 align="char">
513	<para>size_t count</para>
514	</entry><entry
515	 align="char">
516	<para>Size of buf.</para>
517	</entry>
518	 </row></tbody></tgroup></informaltable>
519	<para>RETURN VALUE</para>
520	<informaltable><tgroup cols="2"><tbody><row><entry
521	 align="char">
522	<para>EPERM</para>
523	</entry><entry
524	 align="char">
525	<para>Mode VIDEO_SOURCE_MEMORY not selected.</para>
526	</entry>
527	 </row><row><entry
528	 align="char">
529	<para>ENOMEM</para>
530	</entry><entry
531	 align="char">
532	<para>Attempted to write more data than the internal buffer can
533	 hold.</para>
534	</entry>
535	 </row><row><entry
536	 align="char">
537	<para>EBADF</para>
538	</entry><entry
539	 align="char">
540	<para>fd is not a valid open file descriptor.</para>
541	</entry>
542	 </row></tbody></tgroup></informaltable>
543	
544	</section><section id="VIDEO_STOP"
545	role="subsection"><title>VIDEO_STOP</title>
546	<para>DESCRIPTION
547	</para>
548	<para>This ioctl is for DVB devices only. To control a V4L2 decoder use the V4L2
549	&VIDIOC-DECODER-CMD; instead.</para>
550	<informaltable><tgroup cols="1"><tbody><row><entry
551	 align="char">
552	<para>This ioctl call asks the Video Device to stop playing the current stream.
553	 Depending on the input parameter, the screen can be blanked out or displaying
554	 the last decoded frame.</para>
555	</entry>
556	 </row></tbody></tgroup></informaltable>
557	<para>SYNOPSIS
558	</para>
559	<informaltable><tgroup cols="1"><tbody><row><entry
560	 align="char">
561	<para>int ioctl(fd, int request = VIDEO_STOP, boolean
562	 mode);</para>
563	</entry>
564	 </row></tbody></tgroup></informaltable>
565	<para>PARAMETERS
566	</para>
567	<informaltable><tgroup cols="2"><tbody><row><entry
568	 align="char">
569	<para>int fd</para>
570	</entry><entry
571	 align="char">
572	<para>File descriptor returned by a previous call to open().</para>
573	</entry>
574	 </row><row><entry
575	 align="char">
576	<para>int request</para>
577	</entry><entry
578	 align="char">
579	<para>Equals VIDEO_STOP for this command.</para>
580	</entry>
581	 </row><row><entry
582	 align="char">
583	<para>Boolean mode</para>
584	</entry><entry
585	 align="char">
586	<para>Indicates how the screen shall be handled.</para>
587	</entry>
588	 </row><row><entry
589	 align="char">
590	</entry><entry
591	 align="char">
592	<para>TRUE: Blank screen when stop.</para>
593	</entry>
594	 </row><row><entry
595	 align="char">
596	</entry><entry
597	 align="char">
598	<para>FALSE: Show last decoded frame.</para>
599	</entry>
600	 </row></tbody></tgroup></informaltable>
601	&return-value-dvb;
602	
603	</section><section id="VIDEO_PLAY"
604	role="subsection"><title>VIDEO_PLAY</title>
605	<para>DESCRIPTION
606	</para>
607	<para>This ioctl is for DVB devices only. To control a V4L2 decoder use the V4L2
608	&VIDIOC-DECODER-CMD; instead.</para>
609	<informaltable><tgroup cols="1"><tbody><row><entry
610	 align="char">
611	<para>This ioctl call asks the Video Device to start playing a video stream from the
612	 selected source.</para>
613	</entry>
614	 </row></tbody></tgroup></informaltable>
615	<para>SYNOPSIS
616	</para>
617	<informaltable><tgroup cols="1"><tbody><row><entry
618	 align="char">
619	<para>int ioctl(fd, int request = VIDEO_PLAY);</para>
620	</entry>
621	 </row></tbody></tgroup></informaltable>
622	<para>PARAMETERS
623	</para>
624	<informaltable><tgroup cols="2"><tbody><row><entry
625	 align="char">
626	<para>int fd</para>
627	</entry><entry
628	 align="char">
629	<para>File descriptor returned by a previous call to open().</para>
630	</entry>
631	 </row><row><entry
632	 align="char">
633	<para>int request</para>
634	</entry><entry
635	 align="char">
636	<para>Equals VIDEO_PLAY for this command.</para>
637	</entry>
638	 </row></tbody></tgroup></informaltable>
639	&return-value-dvb;
640	
641	</section><section id="VIDEO_FREEZE"
642	role="subsection"><title>VIDEO_FREEZE</title>
643	<para>DESCRIPTION
644	</para>
645	<para>This ioctl is for DVB devices only. To control a V4L2 decoder use the V4L2
646	&VIDIOC-DECODER-CMD; instead.</para>
647	<informaltable><tgroup cols="1"><tbody><row><entry
648	 align="char">
649	<para>This ioctl call suspends the live video stream being played. Decoding
650	 and playing are frozen. It is then possible to restart the decoding
651	 and playing process of the video stream using the VIDEO_CONTINUE
652	 command. If VIDEO_SOURCE_MEMORY is selected in the ioctl call
653	 VIDEO_SELECT_SOURCE, the DVB subsystem will not decode any more
654	 data until the ioctl call VIDEO_CONTINUE or VIDEO_PLAY is performed.</para>
655	</entry>
656	 </row></tbody></tgroup></informaltable>
657	<para>SYNOPSIS
658	</para>
659	<informaltable><tgroup cols="1"><tbody><row><entry
660	 align="char">
661	<para>int ioctl(fd, int request = VIDEO_FREEZE);</para>
662	</entry>
663	 </row></tbody></tgroup></informaltable>
664	<para>PARAMETERS
665	</para>
666	<informaltable><tgroup cols="2"><tbody><row><entry
667	 align="char">
668	<para>int fd</para>
669	</entry><entry
670	 align="char">
671	<para>File descriptor returned by a previous call to open().</para>
672	</entry>
673	 </row><row><entry
674	 align="char">
675	<para>int request</para>
676	</entry><entry
677	 align="char">
678	<para>Equals VIDEO_FREEZE for this command.</para>
679	</entry>
680	 </row></tbody></tgroup></informaltable>
681	&return-value-dvb;
682	
683	</section><section id="VIDEO_CONTINUE"
684	role="subsection"><title>VIDEO_CONTINUE</title>
685	<para>DESCRIPTION
686	</para>
687	<para>This ioctl is for DVB devices only. To control a V4L2 decoder use the V4L2
688	&VIDIOC-DECODER-CMD; instead.</para>
689	<informaltable><tgroup cols="1"><tbody><row><entry
690	 align="char">
691	<para>This ioctl call restarts decoding and playing processes of the video stream
692	 which was played before a call to VIDEO_FREEZE was made.</para>
693	</entry>
694	 </row></tbody></tgroup></informaltable>
695	<para>SYNOPSIS
696	</para>
697	<informaltable><tgroup cols="1"><tbody><row><entry
698	 align="char">
699	<para>int ioctl(fd, int request = VIDEO_CONTINUE);</para>
700	</entry>
701	 </row></tbody></tgroup></informaltable>
702	<para>PARAMETERS
703	</para>
704	<informaltable><tgroup cols="2"><tbody><row><entry
705	 align="char">
706	<para>int fd</para>
707	</entry><entry
708	 align="char">
709	<para>File descriptor returned by a previous call to open().</para>
710	</entry>
711	 </row><row><entry
712	 align="char">
713	<para>int request</para>
714	</entry><entry
715	 align="char">
716	<para>Equals VIDEO_CONTINUE for this command.</para>
717	</entry>
718	 </row></tbody></tgroup></informaltable>
719	&return-value-dvb;
720	
721	</section><section id="VIDEO_SELECT_SOURCE"
722	role="subsection"><title>VIDEO_SELECT_SOURCE</title>
723	<para>DESCRIPTION
724	</para>
725	<para>This ioctl is for DVB devices only. This ioctl was also supported by the
726	V4L2 ivtv driver, but that has been replaced by the ivtv-specific
727	<constant>IVTV_IOC_PASSTHROUGH_MODE</constant> ioctl.</para>
728	<informaltable><tgroup cols="1"><tbody><row><entry
729	 align="char">
730	<para>This ioctl call informs the video device which source shall be used for the input
731	 data. The possible sources are demux or memory. If memory is selected, the
732	 data is fed to the video device through the write command.</para>
733	</entry>
734	 </row></tbody></tgroup></informaltable>
735	<para>SYNOPSIS
736	</para>
737	<informaltable><tgroup cols="1"><tbody><row><entry
738	 align="char">
739	<para>int ioctl(fd, int request = VIDEO_SELECT_SOURCE,
740	 video_stream_source_t source);</para>
741	</entry>
742	 </row></tbody></tgroup></informaltable>
743	<para>PARAMETERS
744	</para>
745	<informaltable><tgroup cols="2"><tbody><row><entry
746	 align="char">
747	<para>int fd</para>
748	</entry><entry
749	 align="char">
750	<para>File descriptor returned by a previous call to open().</para>
751	</entry>
752	 </row><row><entry
753	 align="char">
754	<para>int request</para>
755	</entry><entry
756	 align="char">
757	<para>Equals VIDEO_SELECT_SOURCE for this command.</para>
758	</entry>
759	 </row><row><entry
760	 align="char">
761	<para>video_stream_source_t
762	 source</para>
763	</entry><entry
764	 align="char">
765	<para>Indicates which source shall be used for the Video stream.</para>
766	</entry>
767	 </row></tbody></tgroup></informaltable>
768	&return-value-dvb;
769	
770	</section><section id="VIDEO_SET_BLANK"
771	role="subsection"><title>VIDEO_SET_BLANK</title>
772	<para>DESCRIPTION
773	</para>
774	<informaltable><tgroup cols="1"><tbody><row><entry
775	 align="char">
776	<para>This ioctl call asks the Video Device to blank out the picture.</para>
777	</entry>
778	 </row></tbody></tgroup></informaltable>
779	<para>SYNOPSIS
780	</para>
781	<informaltable><tgroup cols="1"><tbody><row><entry
782	 align="char">
783	<para>int ioctl(fd, int request = VIDEO_SET_BLANK, boolean
784	 mode);</para>
785	</entry>
786	 </row></tbody></tgroup></informaltable>
787	<para>PARAMETERS
788	</para>
789	<informaltable><tgroup cols="2"><tbody><row><entry
790	 align="char">
791	<para>int fd</para>
792	</entry><entry
793	 align="char">
794	<para>File descriptor returned by a previous call to open().</para>
795	</entry>
796	 </row><row><entry
797	 align="char">
798	<para>int request</para>
799	</entry><entry
800	 align="char">
801	<para>Equals VIDEO_SET_BLANK for this command.</para>
802	</entry>
803	 </row><row><entry
804	 align="char">
805	<para>boolean mode</para>
806	</entry><entry
807	 align="char">
808	<para>TRUE: Blank screen when stop.</para>
809	</entry>
810	 </row><row><entry
811	 align="char">
812	</entry><entry
813	 align="char">
814	<para>FALSE: Show last decoded frame.</para>
815	</entry>
816	 </row></tbody></tgroup></informaltable>
817	&return-value-dvb;
818	
819	</section><section id="VIDEO_GET_STATUS"
820	role="subsection"><title>VIDEO_GET_STATUS</title>
821	<para>DESCRIPTION
822	</para>
823	<informaltable><tgroup cols="1"><tbody><row><entry
824	 align="char">
825	<para>This ioctl call asks the Video Device to return the current status of the device.</para>
826	</entry>
827	 </row></tbody></tgroup></informaltable>
828	<para>SYNOPSIS
829	</para>
830	<informaltable><tgroup cols="1"><tbody><row><entry
831	 align="char">
832	<para> int ioctl(fd, int request = VIDEO_GET_STATUS, struct
833	 video_status &#x22C6;status);</para>
834	</entry>
835	 </row></tbody></tgroup></informaltable>
836	<para>PARAMETERS
837	</para>
838	<informaltable><tgroup cols="2"><tbody><row><entry
839	 align="char">
840	<para>int fd</para>
841	</entry><entry
842	 align="char">
843	<para>File descriptor returned by a previous call to open().</para>
844	</entry>
845	 </row><row><entry
846	 align="char">
847	<para>int request</para>
848	</entry><entry
849	 align="char">
850	<para>Equals VIDEO_GET_STATUS for this command.</para>
851	</entry>
852	 </row><row><entry
853	 align="char">
854	<para>struct video_status
855	 *status</para>
856	</entry><entry
857	 align="char">
858	<para>Returns the current status of the Video Device.</para>
859	</entry>
860	 </row></tbody></tgroup></informaltable>
861	&return-value-dvb;
862	
863	</section><section id="VIDEO_GET_FRAME_COUNT"
864	role="subsection"><title>VIDEO_GET_FRAME_COUNT</title>
865	<para>DESCRIPTION
866	</para>
867	<para>This ioctl is obsolete. Do not use in new drivers. For V4L2 decoders this
868	ioctl has been replaced by the <constant>V4L2_CID_MPEG_VIDEO_DEC_FRAME</constant> control.</para>
869	<informaltable><tgroup cols="1"><tbody><row><entry
870	 align="char">
871	<para>This ioctl call asks the Video Device to return the number of displayed frames
872	since the decoder was started.</para>
873	</entry>
874	 </row></tbody></tgroup></informaltable>
875	<para>SYNOPSIS
876	</para>
877	<informaltable><tgroup cols="1"><tbody><row><entry
878	 align="char">
879	<para>int ioctl(int fd, int request =
880	 VIDEO_GET_FRAME_COUNT, __u64 *pts);</para>
881	</entry>
882	 </row></tbody></tgroup></informaltable>
883	<para>PARAMETERS
884	</para>
885	<informaltable><tgroup cols="2"><tbody><row><entry
886	 align="char">
887	<para>int fd</para>
888	</entry><entry
889	 align="char">
890	<para>File descriptor returned by a previous call to open().</para>
891	</entry>
892	 </row><row><entry
893	 align="char">
894	<para>int request</para>
895	</entry><entry
896	 align="char">
897	<para>Equals VIDEO_GET_FRAME_COUNT for this
898	 command.</para>
899	</entry>
900	 </row><row><entry
901	 align="char">
902	<para>__u64 *pts
903	</para>
904	</entry><entry
905	 align="char">
906	<para>Returns the number of frames displayed since the decoder was started.
907	</para>
908	</entry>
909	 </row></tbody></tgroup></informaltable>
910	&return-value-dvb;
911	
912	</section><section id="VIDEO_GET_PTS"
913	role="subsection"><title>VIDEO_GET_PTS</title>
914	<para>DESCRIPTION
915	</para>
916	<para>This ioctl is obsolete. Do not use in new drivers. For V4L2 decoders this
917	ioctl has been replaced by the <constant>V4L2_CID_MPEG_VIDEO_DEC_PTS</constant> control.</para>
918	<informaltable><tgroup cols="1"><tbody><row><entry
919	 align="char">
920	<para>This ioctl call asks the Video Device to return the current PTS timestamp.</para>
921	</entry>
922	 </row></tbody></tgroup></informaltable>
923	<para>SYNOPSIS
924	</para>
925	<informaltable><tgroup cols="1"><tbody><row><entry
926	 align="char">
927	<para>int ioctl(int fd, int request =
928	 VIDEO_GET_PTS, __u64 *pts);</para>
929	</entry>
930	 </row></tbody></tgroup></informaltable>
931	<para>PARAMETERS
932	</para>
933	<informaltable><tgroup cols="2"><tbody><row><entry
934	 align="char">
935	<para>int fd</para>
936	</entry><entry
937	 align="char">
938	<para>File descriptor returned by a previous call to open().</para>
939	</entry>
940	 </row><row><entry
941	 align="char">
942	<para>int request</para>
943	</entry><entry
944	 align="char">
945	<para>Equals VIDEO_GET_PTS for this
946	 command.</para>
947	</entry>
948	 </row><row><entry
949	 align="char">
950	<para>__u64 *pts
951	</para>
952	</entry><entry
953	 align="char">
954	<para>Returns the 33-bit timestamp as defined in ITU T-REC-H.222.0 / ISO/IEC 13818-1.
955	</para>
956	<para>
957	The PTS should belong to the currently played
958	frame if possible, but may also be a value close to it
959	like the PTS of the last decoded frame or the last PTS
960	extracted by the PES parser.</para>
961	</entry>
962	 </row></tbody></tgroup></informaltable>
963	&return-value-dvb;
964	
965	</section><section id="VIDEO_GET_FRAME_RATE"
966	role="subsection"><title>VIDEO_GET_FRAME_RATE</title>
967	<para>DESCRIPTION
968	</para>
969	<informaltable><tgroup cols="1"><tbody><row><entry
970	 align="char">
971	<para>This ioctl call asks the Video Device to return the current framerate.</para>
972	</entry>
973	 </row></tbody></tgroup></informaltable>
974	<para>SYNOPSIS
975	</para>
976	<informaltable><tgroup cols="1"><tbody><row><entry
977	 align="char">
978	<para>int ioctl(int fd, int request =
979	 VIDEO_GET_FRAME_RATE, unsigned int *rate);</para>
980	</entry>
981	 </row></tbody></tgroup></informaltable>
982	<para>PARAMETERS
983	</para>
984	<informaltable><tgroup cols="2"><tbody><row><entry
985	 align="char">
986	<para>int fd</para>
987	</entry><entry
988	 align="char">
989	<para>File descriptor returned by a previous call to open().</para>
990	</entry>
991	 </row><row><entry
992	 align="char">
993	<para>int request</para>
994	</entry><entry
995	 align="char">
996	<para>Equals VIDEO_GET_FRAME_RATE for this
997	 command.</para>
998	</entry>
999	 </row><row><entry
1000	 align="char">
1001	<para>unsigned int *rate
1002	</para>
1003	</entry><entry
1004	 align="char">
1005	<para>Returns the framerate in number of frames per 1000 seconds.
1006	</para>
1007	</entry>
1008	 </row></tbody></tgroup></informaltable>
1009	&return-value-dvb;
1010	
1011	</section><section id="VIDEO_GET_EVENT"
1012	role="subsection"><title>VIDEO_GET_EVENT</title>
1013	<para>DESCRIPTION
1014	</para>
1015	<para>This ioctl is for DVB devices only. To get events from a V4L2 decoder use the V4L2
1016	&VIDIOC-DQEVENT; ioctl instead.</para>
1017	<informaltable><tgroup cols="1"><tbody><row><entry
1018	 align="char">
1019	<para>This ioctl call returns an event of type video_event if available. If an event is
1020	 not available, the behavior depends on whether the device is in blocking or
1021	 non-blocking mode. In the latter case, the call fails immediately with errno
1022	 set to EWOULDBLOCK. In the former case, the call blocks until an event
1023	 becomes available. The standard Linux poll() and/or select() system calls can
1024	 be used with the device file descriptor to watch for new events. For select(),
1025	 the file descriptor should be included in the exceptfds argument, and for
1026	 poll(), POLLPRI should be specified as the wake-up condition. Read-only
1027	 permissions are sufficient for this ioctl call.</para>
1028	</entry>
1029	 </row></tbody></tgroup></informaltable>
1030	<para>SYNOPSIS
1031	</para>
1032	<informaltable><tgroup cols="1"><tbody><row><entry
1033	 align="char">
1034	<para> int ioctl(fd, int request = VIDEO_GET_EVENT, struct
1035	 video_event &#x22C6;ev);</para>
1036	</entry>
1037	 </row></tbody></tgroup></informaltable>
1038	<para>PARAMETERS
1039	</para>
1040	<informaltable><tgroup cols="2"><tbody><row><entry
1041	 align="char">
1042	<para>int fd</para>
1043	</entry><entry
1044	 align="char">
1045	<para>File descriptor returned by a previous call to open().</para>
1046	</entry>
1047	 </row><row><entry
1048	 align="char">
1049	<para>int request</para>
1050	</entry><entry
1051	 align="char">
1052	<para>Equals VIDEO_GET_EVENT for this command.</para>
1053	</entry>
1054	 </row><row><entry
1055	 align="char">
1056	<para>struct video_event
1057	 *ev</para>
1058	</entry><entry
1059	 align="char">
1060	<para>Points to the location where the event, if any, is to be
1061	 stored.</para>
1062	</entry>
1063	 </row></tbody></tgroup></informaltable>
1064	&return-value-dvb;
1065	<informaltable><tgroup cols="2"><tbody><row><entry
1066	 align="char">
1067	<para>EWOULDBLOCK</para>
1068	</entry><entry
1069	 align="char">
1070	<para>There is no event pending, and the device is in
1071	 non-blocking mode.</para>
1072	</entry>
1073	 </row><row><entry
1074	 align="char">
1075	<para>EOVERFLOW</para>
1076	</entry><entry
1077	 align="char">
1078	<para>Overflow in event queue - one or more events were lost.</para>
1079	</entry>
1080	 </row></tbody></tgroup></informaltable>
1081	
1082	</section><section id="VIDEO_COMMAND"
1083	role="subsection"><title>VIDEO_COMMAND</title>
1084	<para>DESCRIPTION
1085	</para>
1086	<para>This ioctl is obsolete. Do not use in new drivers. For V4L2 decoders this
1087	ioctl has been replaced by the &VIDIOC-DECODER-CMD; ioctl.</para>
1088	<informaltable><tgroup cols="1"><tbody><row><entry
1089	 align="char">
1090	<para>This ioctl commands the decoder. The <constant>video_command</constant> struct
1091	is a subset of the <constant>v4l2_decoder_cmd</constant> struct, so refer to the
1092	&VIDIOC-DECODER-CMD; documentation for more information.</para>
1093	</entry>
1094	 </row></tbody></tgroup></informaltable>
1095	<para>SYNOPSIS
1096	</para>
1097	<informaltable><tgroup cols="1"><tbody><row><entry
1098	 align="char">
1099	<para>int ioctl(int fd, int request =
1100	 VIDEO_COMMAND, struct video_command *cmd);</para>
1101	</entry>
1102	 </row></tbody></tgroup></informaltable>
1103	<para>PARAMETERS
1104	</para>
1105	<informaltable><tgroup cols="2"><tbody><row><entry
1106	 align="char">
1107	<para>int fd</para>
1108	</entry><entry
1109	 align="char">
1110	<para>File descriptor returned by a previous call to open().</para>
1111	</entry>
1112	 </row><row><entry
1113	 align="char">
1114	<para>int request</para>
1115	</entry><entry
1116	 align="char">
1117	<para>Equals VIDEO_COMMAND for this
1118	 command.</para>
1119	</entry>
1120	 </row><row><entry
1121	 align="char">
1122	<para>struct video_command *cmd
1123	</para>
1124	</entry><entry
1125	 align="char">
1126	<para>Commands the decoder.
1127	</para>
1128	</entry>
1129	 </row></tbody></tgroup></informaltable>
1130	&return-value-dvb;
1131	
1132	</section><section id="VIDEO_TRY_COMMAND"
1133	role="subsection"><title>VIDEO_TRY_COMMAND</title>
1134	<para>DESCRIPTION
1135	</para>
1136	<para>This ioctl is obsolete. Do not use in new drivers. For V4L2 decoders this
1137	ioctl has been replaced by the &VIDIOC-TRY-DECODER-CMD; ioctl.</para>
1138	<informaltable><tgroup cols="1"><tbody><row><entry
1139	 align="char">
1140	<para>This ioctl tries a decoder command. The <constant>video_command</constant> struct
1141	is a subset of the <constant>v4l2_decoder_cmd</constant> struct, so refer to the
1142	&VIDIOC-TRY-DECODER-CMD; documentation for more information.</para>
1143	</entry>
1144	 </row></tbody></tgroup></informaltable>
1145	<para>SYNOPSIS
1146	</para>
1147	<informaltable><tgroup cols="1"><tbody><row><entry
1148	 align="char">
1149	<para>int ioctl(int fd, int request =
1150	 VIDEO_TRY_COMMAND, struct video_command *cmd);</para>
1151	</entry>
1152	 </row></tbody></tgroup></informaltable>
1153	<para>PARAMETERS
1154	</para>
1155	<informaltable><tgroup cols="2"><tbody><row><entry
1156	 align="char">
1157	<para>int fd</para>
1158	</entry><entry
1159	 align="char">
1160	<para>File descriptor returned by a previous call to open().</para>
1161	</entry>
1162	 </row><row><entry
1163	 align="char">
1164	<para>int request</para>
1165	</entry><entry
1166	 align="char">
1167	<para>Equals VIDEO_TRY_COMMAND for this
1168	 command.</para>
1169	</entry>
1170	 </row><row><entry
1171	 align="char">
1172	<para>struct video_command *cmd
1173	</para>
1174	</entry><entry
1175	 align="char">
1176	<para>Try a decoder command.
1177	</para>
1178	</entry>
1179	 </row></tbody></tgroup></informaltable>
1180	&return-value-dvb;
1181	
1182	</section><section id="VIDEO_GET_SIZE"
1183	role="subsection"><title>VIDEO_GET_SIZE</title>
1184	<para>DESCRIPTION
1185	</para>
1186	<informaltable><tgroup cols="1"><tbody><row><entry
1187	 align="char">
1188	<para>This ioctl returns the size and aspect ratio.</para>
1189	</entry>
1190	 </row></tbody></tgroup></informaltable>
1191	<para>SYNOPSIS
1192	</para>
1193	<informaltable><tgroup cols="1"><tbody><row><entry
1194	 align="char">
1195	<para>int ioctl(int fd, int request =
1196	 VIDEO_GET_SIZE, video_size_t *size);</para>
1197	</entry>
1198	 </row></tbody></tgroup></informaltable>
1199	<para>PARAMETERS
1200	</para>
1201	<informaltable><tgroup cols="2"><tbody><row><entry
1202	 align="char">
1203	<para>int fd</para>
1204	</entry><entry
1205	 align="char">
1206	<para>File descriptor returned by a previous call to open().</para>
1207	</entry>
1208	 </row><row><entry
1209	 align="char">
1210	<para>int request</para>
1211	</entry><entry
1212	 align="char">
1213	<para>Equals VIDEO_GET_SIZE for this
1214	 command.</para>
1215	</entry>
1216	 </row><row><entry
1217	 align="char">
1218	<para>video_size_t *size
1219	</para>
1220	</entry><entry
1221	 align="char">
1222	<para>Returns the size and aspect ratio.
1223	</para>
1224	</entry>
1225	 </row></tbody></tgroup></informaltable>
1226	&return-value-dvb;
1227	
1228	</section><section id="VIDEO_SET_DISPLAY_FORMAT"
1229	role="subsection"><title>VIDEO_SET_DISPLAY_FORMAT</title>
1230	<para>DESCRIPTION
1231	</para>
1232	<informaltable><tgroup cols="1"><tbody><row><entry
1233	 align="char">
1234	<para>This ioctl call asks the Video Device to select the video format to be applied
1235	 by the MPEG chip on the video.</para>
1236	</entry>
1237	 </row></tbody></tgroup></informaltable>
1238	<para>SYNOPSIS
1239	</para>
1240	<informaltable><tgroup cols="1"><tbody><row><entry
1241	 align="char">
1242	<para> int ioctl(fd, int request =
1243	 VIDEO_SET_DISPLAY_FORMAT, video_display_format_t
1244	 format);</para>
1245	</entry>
1246	 </row></tbody></tgroup></informaltable>
1247	<para>PARAMETERS
1248	</para>
1249	<informaltable><tgroup cols="2"><tbody><row><entry
1250	 align="char">
1251	<para>int fd</para>
1252	</entry><entry
1253	 align="char">
1254	<para>File descriptor returned by a previous call to open().</para>
1255	</entry>
1256	 </row><row><entry
1257	 align="char">
1258	<para>int request</para>
1259	</entry><entry
1260	 align="char">
1261	<para>Equals VIDEO_SET_DISPLAY_FORMAT for this
1262	 command.</para>
1263	</entry>
1264	 </row><row><entry
1265	 align="char">
1266	<para>video_display_format_t
1267	 format</para>
1268	</entry><entry
1269	 align="char">
1270	<para>Selects the video format to be used.</para>
1271	</entry>
1272	 </row></tbody></tgroup></informaltable>
1273	&return-value-dvb;
1274	
1275	</section><section id="VIDEO_STILLPICTURE"
1276	role="subsection"><title>VIDEO_STILLPICTURE</title>
1277	<para>DESCRIPTION
1278	</para>
1279	<informaltable><tgroup cols="1"><tbody><row><entry
1280	 align="char">
1281	<para>This ioctl call asks the Video Device to display a still picture (I-frame). The
1282	 input data shall contain an I-frame. If the pointer is NULL, then the current
1283	 displayed still picture is blanked.</para>
1284	</entry>
1285	 </row></tbody></tgroup></informaltable>
1286	<para>SYNOPSIS
1287	</para>
1288	<informaltable><tgroup cols="1"><tbody><row><entry
1289	 align="char">
1290	<para>int ioctl(fd, int request = VIDEO_STILLPICTURE,
1291	 struct video_still_picture &#x22C6;sp);</para>
1292	</entry>
1293	 </row></tbody></tgroup></informaltable>
1294	<para>PARAMETERS
1295	</para>
1296	<informaltable><tgroup cols="2"><tbody><row><entry
1297	 align="char">
1298	<para>int fd</para>
1299	</entry><entry
1300	 align="char">
1301	<para>File descriptor returned by a previous call to open().</para>
1302	</entry>
1303	 </row><row><entry
1304	 align="char">
1305	<para>int request</para>
1306	</entry><entry
1307	 align="char">
1308	<para>Equals VIDEO_STILLPICTURE for this command.</para>
1309	</entry>
1310	 </row><row><entry
1311	 align="char">
1312	<para>struct
1313	 video_still_picture
1314	 *sp</para>
1315	</entry><entry
1316	 align="char">
1317	<para>Pointer to a location where an I-frame and size is stored.</para>
1318	</entry>
1319	 </row></tbody></tgroup></informaltable>
1320	&return-value-dvb;
1321	
1322	</section><section id="VIDEO_FAST_FORWARD"
1323	role="subsection"><title>VIDEO_FAST_FORWARD</title>
1324	<para>DESCRIPTION
1325	</para>
1326	<informaltable><tgroup cols="1"><tbody><row><entry
1327	 align="char">
1328	<para>This ioctl call asks the Video Device to skip decoding of N number of I-frames.
1329	 This call can only be used if VIDEO_SOURCE_MEMORY is selected.</para>
1330	</entry>
1331	 </row></tbody></tgroup></informaltable>
1332	<para>SYNOPSIS
1333	</para>
1334	<informaltable><tgroup cols="1"><tbody><row><entry
1335	 align="char">
1336	<para>int ioctl(fd, int request = VIDEO_FAST_FORWARD, int
1337	 nFrames);</para>
1338	</entry>
1339	 </row></tbody></tgroup></informaltable>
1340	<para>PARAMETERS
1341	</para>
1342	<informaltable><tgroup cols="2"><tbody><row><entry
1343	 align="char">
1344	<para>int fd</para>
1345	</entry><entry
1346	 align="char">
1347	<para>File descriptor returned by a previous call to open().</para>
1348	</entry>
1349	 </row><row><entry
1350	 align="char">
1351	<para>int request</para>
1352	</entry><entry
1353	 align="char">
1354	<para>Equals VIDEO_FAST_FORWARD for this command.</para>
1355	</entry>
1356	 </row><row><entry
1357	 align="char">
1358	<para>int nFrames</para>
1359	</entry><entry
1360	 align="char">
1361	<para>The number of frames to skip.</para>
1362	</entry>
1363	 </row></tbody></tgroup></informaltable>
1364	&return-value-dvb;
1365	<informaltable><tgroup cols="2"><tbody><row><entry
1366	 align="char">
1367	<para>EPERM</para>
1368	</entry><entry
1369	 align="char">
1370	<para>Mode VIDEO_SOURCE_MEMORY not selected.</para>
1371	</entry>
1372	 </row></tbody></tgroup></informaltable>
1373	
1374	</section><section id="VIDEO_SLOWMOTION"
1375	role="subsection"><title>VIDEO_SLOWMOTION</title>
1376	<para>DESCRIPTION
1377	</para>
1378	<informaltable><tgroup cols="1"><tbody><row><entry
1379	 align="char">
1380	<para>This ioctl call asks the video device to repeat decoding frames N number of
1381	 times. This call can only be used if VIDEO_SOURCE_MEMORY is selected.</para>
1382	</entry>
1383	 </row></tbody></tgroup></informaltable>
1384	<para>SYNOPSIS
1385	</para>
1386	<informaltable><tgroup cols="1"><tbody><row><entry
1387	 align="char">
1388	<para>int ioctl(fd, int request = VIDEO_SLOWMOTION, int
1389	 nFrames);</para>
1390	</entry>
1391	 </row></tbody></tgroup></informaltable>
1392	<para>PARAMETERS
1393	</para>
1394	<informaltable><tgroup cols="2"><tbody><row><entry
1395	 align="char">
1396	<para>int fd</para>
1397	</entry><entry
1398	 align="char">
1399	<para>File descriptor returned by a previous call to open().</para>
1400	</entry>
1401	 </row><row><entry
1402	 align="char">
1403	<para>int request</para>
1404	</entry><entry
1405	 align="char">
1406	<para>Equals VIDEO_SLOWMOTION for this command.</para>
1407	</entry>
1408	 </row><row><entry
1409	 align="char">
1410	<para>int nFrames</para>
1411	</entry><entry
1412	 align="char">
1413	<para>The number of times to repeat each frame.</para>
1414	</entry>
1415	 </row></tbody></tgroup></informaltable>
1416	&return-value-dvb;
1417	<informaltable><tgroup cols="2"><tbody><row><entry
1418	 align="char">
1419	<para>EPERM</para>
1420	</entry><entry
1421	 align="char">
1422	<para>Mode VIDEO_SOURCE_MEMORY not selected.</para>
1423	</entry>
1424	 </row></tbody></tgroup></informaltable>
1425	
1426	</section><section id="VIDEO_GET_CAPABILITIES"
1427	role="subsection"><title>VIDEO_GET_CAPABILITIES</title>
1428	<para>DESCRIPTION
1429	</para>
1430	<informaltable><tgroup cols="1"><tbody><row><entry
1431	 align="char">
1432	<para>This ioctl call asks the video device about its decoding capabilities. On success
1433	 it returns and integer which has bits set according to the defines in section ??.</para>
1434	</entry>
1435	 </row></tbody></tgroup></informaltable>
1436	<para>SYNOPSIS
1437	</para>
1438	<informaltable><tgroup cols="1"><tbody><row><entry
1439	 align="char">
1440	<para>int ioctl(fd, int request = VIDEO_GET_CAPABILITIES,
1441	 unsigned int &#x22C6;cap);</para>
1442	</entry>
1443	 </row></tbody></tgroup></informaltable>
1444	<para>PARAMETERS
1445	</para>
1446	<informaltable><tgroup cols="2"><tbody><row><entry
1447	 align="char">
1448	<para>int fd</para>
1449	</entry><entry
1450	 align="char">
1451	<para>File descriptor returned by a previous call to open().</para>
1452	</entry>
1453	 </row><row><entry
1454	 align="char">
1455	<para>int request</para>
1456	</entry><entry
1457	 align="char">
1458	<para>Equals VIDEO_GET_CAPABILITIES for this
1459	 command.</para>
1460	</entry>
1461	 </row><row><entry
1462	 align="char">
1463	<para>unsigned int *cap</para>
1464	</entry><entry
1465	 align="char">
1466	<para>Pointer to a location where to store the capability
1467	 information.</para>
1468	</entry>
1469	 </row></tbody></tgroup></informaltable>
1470	&return-value-dvb;
1471	
1472	</section><section id="VIDEO_SET_ID"
1473	role="subsection"><title>VIDEO_SET_ID</title>
1474	<para>DESCRIPTION
1475	</para>
1476	<informaltable><tgroup cols="1"><tbody><row><entry
1477	 align="char">
1478	<para>This ioctl selects which sub-stream is to be decoded if a program or system
1479	 stream is sent to the video device.</para>
1480	</entry>
1481	 </row></tbody></tgroup></informaltable>
1482	<para>SYNOPSIS
1483	</para>
1484	<informaltable><tgroup cols="1"><tbody><row><entry
1485	 align="char">
1486	<para>int ioctl(int fd, int request = VIDEO_SET_ID, int
1487	 id);</para>
1488	</entry>
1489	 </row></tbody></tgroup></informaltable>
1490	<para>PARAMETERS
1491	</para>
1492	<informaltable><tgroup cols="2"><tbody><row><entry
1493	 align="char">
1494	<para>int fd</para>
1495	</entry><entry
1496	 align="char">
1497	<para>File descriptor returned by a previous call to open().</para>
1498	</entry>
1499	 </row><row><entry
1500	 align="char">
1501	<para>int request</para>
1502	</entry><entry
1503	 align="char">
1504	<para>Equals VIDEO_SET_ID for this command.</para>
1505	</entry>
1506	 </row><row><entry
1507	 align="char">
1508	<para>int id</para>
1509	</entry><entry
1510	 align="char">
1511	<para>video sub-stream id</para>
1512	</entry>
1513	 </row></tbody></tgroup></informaltable>
1514	&return-value-dvb;
1515	<informaltable><tgroup cols="2"><tbody><row><entry
1516	 align="char">
1517	<para>EINVAL</para>
1518	</entry><entry
1519	 align="char">
1520	<para>Invalid sub-stream id.</para>
1521	</entry>
1522	 </row></tbody></tgroup></informaltable>
1523	
1524	</section><section id="VIDEO_CLEAR_BUFFER"
1525	role="subsection"><title>VIDEO_CLEAR_BUFFER</title>
1526	<para>DESCRIPTION
1527	</para>
1528	<informaltable><tgroup cols="1"><tbody><row><entry
1529	 align="char">
1530	<para>This ioctl call clears all video buffers in the driver and in the decoder hardware.</para>
1531	</entry>
1532	 </row></tbody></tgroup></informaltable>
1533	<para>SYNOPSIS
1534	</para>
1535	<informaltable><tgroup cols="1"><tbody><row><entry
1536	 align="char">
1537	<para>int ioctl(fd, int request = VIDEO_CLEAR_BUFFER);</para>
1538	</entry>
1539	 </row></tbody></tgroup></informaltable>
1540	<para>PARAMETERS
1541	</para>
1542	<informaltable><tgroup cols="2"><tbody><row><entry
1543	 align="char">
1544	<para>int fd</para>
1545	</entry><entry
1546	 align="char">
1547	<para>File descriptor returned by a previous call to open().</para>
1548	</entry>
1549	 </row><row><entry
1550	 align="char">
1551	<para>int request</para>
1552	</entry><entry
1553	 align="char">
1554	<para>Equals VIDEO_CLEAR_BUFFER for this command.</para>
1555	</entry>
1556	 </row></tbody></tgroup></informaltable>
1557	&return-value-dvb;
1558	
1559	</section><section id="VIDEO_SET_STREAMTYPE"
1560	role="subsection"><title>VIDEO_SET_STREAMTYPE</title>
1561	<para>DESCRIPTION
1562	</para>
1563	<informaltable><tgroup cols="1"><tbody><row><entry
1564	 align="char">
1565	<para>This ioctl tells the driver which kind of stream to expect being written to it. If
1566	 this call is not used the default of video PES is used. Some drivers might not
1567	 support this call and always expect PES.</para>
1568	</entry>
1569	 </row></tbody></tgroup></informaltable>
1570	<para>SYNOPSIS
1571	</para>
1572	<informaltable><tgroup cols="1"><tbody><row><entry
1573	 align="char">
1574	<para>int ioctl(fd, int request = VIDEO_SET_STREAMTYPE,
1575	 int type);</para>
1576	</entry>
1577	 </row></tbody></tgroup></informaltable>
1578	<para>PARAMETERS
1579	</para>
1580	<informaltable><tgroup cols="2"><tbody><row><entry
1581	 align="char">
1582	<para>int fd</para>
1583	</entry><entry
1584	 align="char">
1585	<para>File descriptor returned by a previous call to open().</para>
1586	</entry>
1587	 </row><row><entry
1588	 align="char">
1589	<para>int request</para>
1590	</entry><entry
1591	 align="char">
1592	<para>Equals VIDEO_SET_STREAMTYPE for this command.</para>
1593	</entry>
1594	 </row><row><entry
1595	 align="char">
1596	<para>int type</para>
1597	</entry><entry
1598	 align="char">
1599	<para>stream type</para>
1600	</entry>
1601	 </row></tbody></tgroup></informaltable>
1602	&return-value-dvb;
1603	
1604	</section><section id="VIDEO_SET_FORMAT"
1605	role="subsection"><title>VIDEO_SET_FORMAT</title>
1606	<para>DESCRIPTION
1607	</para>
1608	<informaltable><tgroup cols="1"><tbody><row><entry
1609	 align="char">
1610	<para>This ioctl sets the screen format (aspect ratio) of the connected output device
1611	 (TV) so that the output of the decoder can be adjusted accordingly.</para>
1612	</entry>
1613	 </row></tbody></tgroup></informaltable>
1614	<para>SYNOPSIS
1615	</para>
1616	<informaltable><tgroup cols="1"><tbody><row><entry
1617	 align="char">
1618	<para> int ioctl(fd, int request = VIDEO_SET_FORMAT,
1619	 video_format_t format);</para>
1620	</entry>
1621	 </row></tbody></tgroup></informaltable>
1622	<para>PARAMETERS
1623	</para>
1624	<informaltable><tgroup cols="2"><tbody><row><entry
1625	 align="char">
1626	<para>int fd</para>
1627	</entry><entry
1628	 align="char">
1629	<para>File descriptor returned by a previous call to open().</para>
1630	</entry>
1631	 </row><row><entry
1632	 align="char">
1633	<para>int request</para>
1634	</entry><entry
1635	 align="char">
1636	<para>Equals VIDEO_SET_FORMAT for this command.</para>
1637	</entry>
1638	 </row><row><entry
1639	 align="char">
1640	<para>video_format_t
1641	 format</para>
1642	</entry><entry
1643	 align="char">
1644	<para>video format of TV as defined in section ??.</para>
1645	</entry>
1646	 </row></tbody></tgroup></informaltable>
1647	&return-value-dvb;
1648	<informaltable><tgroup cols="2"><tbody><row><entry
1649	 align="char">
1650	<para>EINVAL</para>
1651	</entry><entry
1652	 align="char">
1653	<para>format is not a valid video format.</para>
1654	</entry>
1655	 </row></tbody></tgroup></informaltable>
1656	
1657	</section><section id="VIDEO_SET_SYSTEM"
1658	role="subsection"><title>VIDEO_SET_SYSTEM</title>
1659	<para>DESCRIPTION
1660	</para>
1661	<informaltable><tgroup cols="1"><tbody><row><entry
1662	 align="char">
1663	<para>This ioctl sets the television output format. The format (see section ??) may
1664	 vary from the color format of the displayed MPEG stream. If the hardware is
1665	 not able to display the requested format the call will return an error.</para>
1666	</entry>
1667	 </row></tbody></tgroup></informaltable>
1668	<para>SYNOPSIS
1669	</para>
1670	<informaltable><tgroup cols="1"><tbody><row><entry
1671	 align="char">
1672	<para> int ioctl(fd, int request = VIDEO_SET_SYSTEM ,
1673	 video_system_t system);</para>
1674	</entry>
1675	 </row></tbody></tgroup></informaltable>
1676	<para>PARAMETERS
1677	</para>
1678	<informaltable><tgroup cols="2"><tbody><row><entry
1679	 align="char">
1680	<para>int fd</para>
1681	</entry><entry
1682	 align="char">
1683	<para>File descriptor returned by a previous call to open().</para>
1684	</entry>
1685	 </row><row><entry
1686	 align="char">
1687	<para>int request</para>
1688	</entry><entry
1689	 align="char">
1690	<para>Equals VIDEO_SET_FORMAT for this command.</para>
1691	</entry>
1692	 </row><row><entry
1693	 align="char">
1694	<para>video_system_t
1695	 system</para>
1696	</entry><entry
1697	 align="char">
1698	<para>video system of TV output.</para>
1699	</entry>
1700	 </row></tbody></tgroup></informaltable>
1701	&return-value-dvb;
1702	<informaltable><tgroup cols="2"><tbody><row><entry
1703	 align="char">
1704	<para>EINVAL</para>
1705	</entry><entry
1706	 align="char">
1707	<para>system is not a valid or supported video system.</para>
1708	</entry>
1709	 </row></tbody></tgroup></informaltable>
1710	
1711	</section><section id="VIDEO_SET_HIGHLIGHT"
1712	role="subsection"><title>VIDEO_SET_HIGHLIGHT</title>
1713	<para>DESCRIPTION
1714	</para>
1715	<informaltable><tgroup cols="1"><tbody><row><entry
1716	 align="char">
1717	<para>This ioctl sets the SPU highlight information for the menu access of a DVD.</para>
1718	</entry>
1719	 </row></tbody></tgroup></informaltable>
1720	<para>SYNOPSIS
1721	</para>
1722	<informaltable><tgroup cols="1"><tbody><row><entry
1723	 align="char">
1724	<para> int ioctl(fd, int request = VIDEO_SET_HIGHLIGHT
1725	 ,video_highlight_t &#x22C6;vhilite)</para>
1726	</entry>
1727	 </row></tbody></tgroup></informaltable>
1728	<para>PARAMETERS
1729	</para>
1730	<informaltable><tgroup cols="2"><tbody><row><entry
1731	 align="char">
1732	<para>int fd</para>
1733	</entry><entry
1734	 align="char">
1735	<para>File descriptor returned by a previous call to open().</para>
1736	</entry>
1737	 </row><row><entry
1738	 align="char">
1739	<para>int request</para>
1740	</entry><entry
1741	 align="char">
1742	<para>Equals VIDEO_SET_HIGHLIGHT for this command.</para>
1743	</entry>
1744	 </row><row><entry
1745	 align="char">
1746	<para>video_highlight_t
1747	 *vhilite</para>
1748	</entry><entry
1749	 align="char">
1750	<para>SPU Highlight information according to section ??.</para>
1751	</entry>
1752	 </row></tbody></tgroup></informaltable>
1753	&return-value-dvb;
1754	
1755	</section><section id="VIDEO_SET_SPU"
1756	role="subsection"><title>VIDEO_SET_SPU</title>
1757	<para>DESCRIPTION
1758	</para>
1759	<informaltable><tgroup cols="1"><tbody><row><entry
1760	 align="char">
1761	<para>This ioctl activates or deactivates SPU decoding in a DVD input stream. It can
1762	 only be used, if the driver is able to handle a DVD stream.</para>
1763	</entry>
1764	 </row></tbody></tgroup></informaltable>
1765	<para>SYNOPSIS
1766	</para>
1767	<informaltable><tgroup cols="1"><tbody><row><entry
1768	 align="char">
1769	<para> int ioctl(fd, int request = VIDEO_SET_SPU ,
1770	 video_spu_t &#x22C6;spu)</para>
1771	</entry>
1772	 </row></tbody></tgroup></informaltable>
1773	<para>PARAMETERS
1774	</para>
1775	<informaltable><tgroup cols="2"><tbody><row><entry
1776	 align="char">
1777	<para>int fd</para>
1778	</entry><entry
1779	 align="char">
1780	<para>File descriptor returned by a previous call to open().</para>
1781	</entry>
1782	 </row><row><entry
1783	 align="char">
1784	<para>int request</para>
1785	</entry><entry
1786	 align="char">
1787	<para>Equals VIDEO_SET_SPU for this command.</para>
1788	</entry>
1789	 </row><row><entry
1790	 align="char">
1791	<para>video_spu_t *spu</para>
1792	</entry><entry
1793	 align="char">
1794	<para>SPU decoding (de)activation and subid setting according
1795	 to section ??.</para>
1796	</entry>
1797	 </row></tbody></tgroup></informaltable>
1798	&return-value-dvb;
1799	<informaltable><tgroup cols="2"><tbody><row><entry
1800	 align="char">
1801	<para>EINVAL</para>
1802	</entry><entry
1803	 align="char">
1804	<para>input is not a valid spu setting or driver cannot handle
1805	 SPU.</para>
1806	</entry>
1807	 </row></tbody></tgroup></informaltable>
1808	
1809	</section><section id="VIDEO_SET_SPU_PALETTE"
1810	role="subsection"><title>VIDEO_SET_SPU_PALETTE</title>
1811	<para>DESCRIPTION
1812	</para>
1813	<informaltable><tgroup cols="1"><tbody><row><entry
1814	 align="char">
1815	<para>This ioctl sets the SPU color palette.</para>
1816	</entry>
1817	 </row></tbody></tgroup></informaltable>
1818	<para>SYNOPSIS
1819	</para>
1820	<informaltable><tgroup cols="1"><tbody><row><entry
1821	 align="char">
1822	<para> int ioctl(fd, int request = VIDEO_SET_SPU_PALETTE
1823	 ,video_spu_palette_t &#x22C6;palette )</para>
1824	</entry>
1825	 </row></tbody></tgroup></informaltable>
1826	<para>PARAMETERS
1827	</para>
1828	<informaltable><tgroup cols="2"><tbody><row><entry
1829	 align="char">
1830	<para>int fd</para>
1831	</entry><entry
1832	 align="char">
1833	<para>File descriptor returned by a previous call to open().</para>
1834	</entry>
1835	 </row><row><entry
1836	 align="char">
1837	<para>int request</para>
1838	</entry><entry
1839	 align="char">
1840	<para>Equals VIDEO_SET_SPU_PALETTE for this command.</para>
1841	</entry>
1842	 </row><row><entry
1843	 align="char">
1844	<para>video_spu_palette_t
1845	 *palette</para>
1846	</entry><entry
1847	 align="char">
1848	<para>SPU palette according to section ??.</para>
1849	</entry>
1850	 </row></tbody></tgroup></informaltable>
1851	&return-value-dvb;
1852	<informaltable><tgroup cols="2"><tbody><row><entry
1853	 align="char">
1854	<para>EINVAL</para>
1855	</entry><entry
1856	 align="char">
1857	<para>input is not a valid palette or driver doesn&#8217;t handle SPU.</para>
1858	</entry>
1859	 </row></tbody></tgroup></informaltable>
1860	
1861	</section><section id="VIDEO_GET_NAVI"
1862	role="subsection"><title>VIDEO_GET_NAVI</title>
1863	<para>DESCRIPTION
1864	</para>
1865	<informaltable><tgroup cols="1"><tbody><row><entry
1866	 align="char">
1867	<para>This ioctl returns navigational information from the DVD stream. This is
1868	 especially needed if an encoded stream has to be decoded by the hardware.</para>
1869	</entry>
1870	 </row></tbody></tgroup></informaltable>
1871	<para>SYNOPSIS
1872	</para>
1873	<informaltable><tgroup cols="1"><tbody><row><entry
1874	 align="char">
1875	<para> int ioctl(fd, int request = VIDEO_GET_NAVI ,
1876	 video_navi_pack_t &#x22C6;navipack)</para>
1877	</entry>
1878	 </row></tbody></tgroup></informaltable>
1879	<para>PARAMETERS
1880	</para>
1881	<informaltable><tgroup cols="2"><tbody><row><entry
1882	 align="char">
1883	<para>int fd</para>
1884	</entry><entry
1885	 align="char">
1886	<para>File descriptor returned by a previous call to open().</para>
1887	</entry>
1888	 </row><row><entry
1889	 align="char">
1890	<para>int request</para>
1891	</entry><entry
1892	 align="char">
1893	<para>Equals VIDEO_GET_NAVI for this command.</para>
1894	</entry>
1895	 </row><row><entry
1896	 align="char">
1897	<para>video_navi_pack_t
1898	 *navipack</para>
1899	</entry><entry
1900	 align="char">
1901	<para>PCI or DSI pack (private stream 2) according to section
1902	 ??.</para>
1903	</entry>
1904	 </row></tbody></tgroup></informaltable>
1905	&return-value-dvb;
1906	<informaltable><tgroup cols="2"><tbody><row><entry
1907	 align="char">
1908	<para>EFAULT</para>
1909	</entry><entry
1910	 align="char">
1911	<para>driver is not able to return navigational information</para>
1912	</entry>
1913	 </row></tbody></tgroup></informaltable>
1914	
1915	</section><section id="VIDEO_SET_ATTRIBUTES"
1916	role="subsection"><title>VIDEO_SET_ATTRIBUTES</title>
1917	<para>DESCRIPTION
1918	</para>
1919	<informaltable><tgroup cols="1"><tbody><row><entry
1920	 align="char">
1921	<para>This ioctl is intended for DVD playback and allows you to set certain
1922	 information about the stream. Some hardware may not need this information,
1923	 but the call also tells the hardware to prepare for DVD playback.</para>
1924	</entry>
1925	 </row></tbody></tgroup></informaltable>
1926	<para>SYNOPSIS
1927	</para>
1928	<informaltable><tgroup cols="1"><tbody><row><entry
1929	 align="char">
1930	<para> int ioctl(fd, int request = VIDEO_SET_ATTRIBUTE
1931	 ,video_attributes_t vattr)</para>
1932	</entry>
1933	 </row></tbody></tgroup></informaltable>
1934	<para>PARAMETERS
1935	</para>
1936	<informaltable><tgroup cols="2"><tbody><row><entry
1937	 align="char">
1938	<para>int fd</para>
1939	</entry><entry
1940	 align="char">
1941	<para>File descriptor returned by a previous call to open().</para>
1942	</entry>
1943	 </row><row><entry
1944	 align="char">
1945	<para>int request</para>
1946	</entry><entry
1947	 align="char">
1948	<para>Equals VIDEO_SET_ATTRIBUTE for this command.</para>
1949	</entry>
1950	 </row><row><entry
1951	 align="char">
1952	<para>video_attributes_t
1953	 vattr</para>
1954	</entry><entry
1955	 align="char">
1956	<para>video attributes according to section ??.</para>
1957	</entry>
1958	 </row></tbody></tgroup></informaltable>
1959	&return-value-dvb;
1960	<informaltable><tgroup cols="2"><tbody><row><entry
1961	 align="char">
1962	<para>EINVAL</para>
1963	</entry><entry
1964	 align="char">
1965	<para>input is not a valid attribute setting.</para>
1966	</entry>
1967	 </row></tbody></tgroup></informaltable>
1968	 </section></section>
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