[linux-dvb] [PATCH] new video event and ioctl

[Andreas Oberritter]

Hi,

I'd like to add this patch to dvb-kernel's linux/dvb/video.h, so
userspace programs can adjust video system settings (PAL/NTSC) depending
on the frame rate and video size. I think it won't break binary
compatibility. The frame rate values are taken from ITU-T Rec. H.262
(2000 E) Table 6-4. May I proceed?

Regards,
Andreas

? video_event.diff
Index: linux/dvb/video.h
===================================================================
RCS file: /cvs/linuxtv/dvb-kernel/linux/include/linux/dvb/video.h,v
retrieving revision 1.3
diff -u -r1.3 video.h
--- linux/dvb/video.h   22 Apr 2003 13:19:06 -0000      1.3
+++ linux/dvb/video.h   19 Dec 2003 23:06:59 -0000
@@ -64,6 +64,17 @@
 } video_size_t;
 
 typedef enum {
+       VIDEO_FRAME_RATE_23_976,
+       VIDEO_FRAME_RATE_24,
+       VIDEO_FRAME_RATE_25,
+       VIDEO_FRAME_RATE_29_97,
+       VIDEO_FRAME_RATE_30,
+       VIDEO_FRAME_RATE_50,
+       VIDEO_FRAME_RATE_59_94,
+       VIDEO_FRAME_RATE_60
+} video_frame_rate_t;
+
+typedef enum {
         VIDEO_SOURCE_DEMUX, /* Select the demux as the main source */ 
        VIDEO_SOURCE_MEMORY /* If this source is selected, the stream 
                               comes from the user through the write 
@@ -80,10 +91,12 @@
 
 struct video_event { 
         int32_t type; 
-#define VIDEO_EVENT_SIZE_CHANGED 1
+#define VIDEO_EVENT_SIZE_CHANGED       1
+#define VIDEO_EVENT_FRAME_RATE_CHANGED 2
         time_t timestamp;
        union {
                video_size_t size;
+               video_frame_rate_t frame_rate;
        } u;
 };
 
@@ -194,6 +207,7 @@
 #define VIDEO_GET_NAVI             _IOR('o', 52, video_navi_pack_t)
 #define VIDEO_SET_ATTRIBUTES       _IO('o', 53)
 #define VIDEO_GET_SIZE             _IOR('o', 55, video_size_t)
+#define VIDEO_GET_FRAME_RATE       _IOR('o', 56, video_frame_rate_t)
 
 #endif /*_DVBVIDEO_H_*/
 

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