include/trace/events/v4l2.h

Source file repositories/reference/linux-study-clean/include/trace/events/v4l2.h

File Facts

System
Linux kernel
Corpus path
include/trace/events/v4l2.h
Extension
.h
Size
9018 bytes
Lines
269
Domain
Repository Root And Misc
Bucket
include
Inferred role
Repository Root And Misc: implementation source
Status
source implementation candidate

Why This File Exists

Top-level or miscellaneous repository surface. Use this as map coverage unless a later manual pass promotes the file into a deeper subsystem dossier.

Dependency Surface

Detected Declarations

Annotated Snippet

#undef TRACE_SYSTEM
#define TRACE_SYSTEM v4l2

#if !defined(_TRACE_V4L2_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_V4L2_H

#include <linux/tracepoint.h>
#include <media/videobuf2-v4l2.h>

/* Enums require being exported to userspace, for user tool parsing */
#undef EM
#undef EMe
#define EM(a, b)	TRACE_DEFINE_ENUM(a);
#define EMe(a, b)	TRACE_DEFINE_ENUM(a);

#define show_type(type)							\
	__print_symbolic(type, SHOW_TYPE)

#define SHOW_TYPE							\
	EM( V4L2_BUF_TYPE_VIDEO_CAPTURE,	"VIDEO_CAPTURE" )	\
	EM( V4L2_BUF_TYPE_VIDEO_OUTPUT,		"VIDEO_OUTPUT" )	\
	EM( V4L2_BUF_TYPE_VIDEO_OVERLAY,	"VIDEO_OVERLAY" )	\
	EM( V4L2_BUF_TYPE_VBI_CAPTURE,		"VBI_CAPTURE" )		\
	EM( V4L2_BUF_TYPE_VBI_OUTPUT,		"VBI_OUTPUT" )		\
	EM( V4L2_BUF_TYPE_SLICED_VBI_CAPTURE,   "SLICED_VBI_CAPTURE" )	\
	EM( V4L2_BUF_TYPE_SLICED_VBI_OUTPUT,    "SLICED_VBI_OUTPUT" )	\
	EM( V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY, "VIDEO_OUTPUT_OVERLAY" ) \
	EM( V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE, "VIDEO_CAPTURE_MPLANE" ) \
	EM( V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,  "VIDEO_OUTPUT_MPLANE" )	\
	EM( V4L2_BUF_TYPE_SDR_CAPTURE,          "SDR_CAPTURE" )		\
	EM( V4L2_BUF_TYPE_SDR_OUTPUT,           "SDR_OUTPUT" )		\
	EM( V4L2_BUF_TYPE_META_CAPTURE,		"META_CAPTURE" )	\
	EMe(V4L2_BUF_TYPE_PRIVATE,		"PRIVATE" )

SHOW_TYPE

#define show_field(field)						\
	__print_symbolic(field, SHOW_FIELD)

#define SHOW_FIELD							\
	EM( V4L2_FIELD_ANY,		"ANY" )				\
	EM( V4L2_FIELD_NONE,		"NONE" )			\
	EM( V4L2_FIELD_TOP,		"TOP" )				\
	EM( V4L2_FIELD_BOTTOM,		"BOTTOM" )			\
	EM( V4L2_FIELD_INTERLACED,	"INTERLACED" )			\
	EM( V4L2_FIELD_SEQ_TB,		"SEQ_TB" )			\
	EM( V4L2_FIELD_SEQ_BT,		"SEQ_BT" )			\
	EM( V4L2_FIELD_ALTERNATE,	"ALTERNATE" )			\
	EM( V4L2_FIELD_INTERLACED_TB,	"INTERLACED_TB" )		\
	EMe( V4L2_FIELD_INTERLACED_BT,	"INTERLACED_BT" )

SHOW_FIELD

/*
 * Now redefine the EM() and EMe() macros to map the enums to the strings
 * that will be printed in the output.
 */
#undef EM
#undef EMe
#define EM(a, b)	{a, b},
#define EMe(a, b)	{a, b}

/* V4L2_TC_TYPE_* are macros, not defines, they do not need processing */

#define show_timecode_type(type)					\
	__print_symbolic(type,						\
		{ V4L2_TC_TYPE_24FPS,		"24FPS" },		\
		{ V4L2_TC_TYPE_25FPS,		"25FPS" },		\
		{ V4L2_TC_TYPE_30FPS,		"30FPS" },		\
		{ V4L2_TC_TYPE_50FPS,		"50FPS" },		\
		{ V4L2_TC_TYPE_60FPS,		"60FPS" })

#define show_flags(flags)						      \
	__print_flags(flags, "|",					      \
		{ V4L2_BUF_FLAG_MAPPED,		     "MAPPED" },	      \
		{ V4L2_BUF_FLAG_QUEUED,		     "QUEUED" },	      \
		{ V4L2_BUF_FLAG_DONE,		     "DONE" },		      \
		{ V4L2_BUF_FLAG_KEYFRAME,	     "KEYFRAME" },	      \
		{ V4L2_BUF_FLAG_PFRAME,		     "PFRAME" },	      \
		{ V4L2_BUF_FLAG_BFRAME,		     "BFRAME" },	      \
		{ V4L2_BUF_FLAG_ERROR,		     "ERROR" },		      \
		{ V4L2_BUF_FLAG_TIMECODE,	     "TIMECODE" },	      \
		{ V4L2_BUF_FLAG_PREPARED,	     "PREPARED" },	      \
		{ V4L2_BUF_FLAG_NO_CACHE_INVALIDATE, "NO_CACHE_INVALIDATE" }, \
		{ V4L2_BUF_FLAG_NO_CACHE_CLEAN,	     "NO_CACHE_CLEAN" },      \
		{ V4L2_BUF_FLAG_TIMESTAMP_MASK,	     "TIMESTAMP_MASK" },      \
		{ V4L2_BUF_FLAG_TIMESTAMP_UNKNOWN,   "TIMESTAMP_UNKNOWN" },   \
		{ V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC, "TIMESTAMP_MONOTONIC" }, \
		{ V4L2_BUF_FLAG_TIMESTAMP_COPY,	     "TIMESTAMP_COPY" },      \
		{ V4L2_BUF_FLAG_LAST,                "LAST" })

Annotation

Implementation Notes