[linux-dvb] [PATCH] DVB: add AUDIO_GET_PTS and VIDEO_GET_PTS ioctls

Andreas Oberritter obi at linuxtv.org
Thu Feb 16 20:13:32 CET 2006


From: Andreas Oberritter <obi at linuxtv.org>

Add two new ioctls to read the 33 bit presentation time stamp from audio
and video devices as defined in ITU T-REC-H.222.0 and ISO/IEC 13818-1.

Signed-off-by: Andreas Oberritter <obi at linuxtv.org>
---

Mauro, please add this patch to your repository after Johannes has
ack'ed it.

diff -r 9e6d8cdea895 linux/include/linux/dvb/audio.h
--- a/linux/include/linux/dvb/audio.h	Mon Feb 13 12:19:59 2006 -0200
+++ b/linux/include/linux/dvb/audio.h	Thu Feb 16 19:56:43 2006 +0100
@@ -121,4 +121,17 @@ typedef uint16_t audio_attributes_t;
 #define AUDIO_SET_ATTRIBUTES       _IOW('o', 17, audio_attributes_t)
 #define AUDIO_SET_KARAOKE          _IOW('o', 18, audio_karaoke_t)
 
+/**
+ * AUDIO_GET_PTS
+ *
+ * Read the 33 bit presentation time stamp as defined
+ * in ITU T-REC-H.222.0 / ISO/IEC 13818-1.
+ *
+ * The PTS should belong to the currently played
+ * frame if possible, but may also be a value close to it
+ * like the PTS of the last decoded frame or the last PTS
+ * extracted by the PES parser.
+ */
+#define AUDIO_GET_PTS              _IOR('o', 19, __u64)
+
 #endif /* _DVBAUDIO_H_ */
diff -r 9e6d8cdea895 linux/include/linux/dvb/video.h
--- a/linux/include/linux/dvb/video.h	Mon Feb 13 12:19:59 2006 -0200
+++ b/linux/include/linux/dvb/video.h	Thu Feb 16 19:56:43 2006 +0100
@@ -200,4 +200,17 @@ typedef uint16_t video_attributes_t;
 #define VIDEO_GET_SIZE             _IOR('o', 55, video_size_t)
 #define VIDEO_GET_FRAME_RATE       _IOR('o', 56, unsigned int)
 
+/**
+ * VIDEO_GET_PTS
+ *
+ * Read the 33 bit presentation time stamp as defined
+ * in ITU T-REC-H.222.0 / ISO/IEC 13818-1.
+ *
+ * The PTS should belong to the currently played
+ * frame if possible, but may also be a value close to it
+ * like the PTS of the last decoded frame or the last PTS
+ * extracted by the PES parser.
+ */
+#define VIDEO_GET_PTS              _IOR('o', 57, __u64)
+
 #endif /*_DVBVIDEO_H_*/





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