gain_map.c File Reference

#include <stdio.h>
#include "libavutil/avassert.h"
#include "libavutil/common.h"
#include "libavutil/error.h"
#include "libavutil/gain_map.h"
#include "libavutil/mem.h"
#include "libavutil/rational.h"
#include "bytestream.h"
#include "gain_map.h"

Go to the source code of this file.

Macros
#define	XMP_GAIN_MAP_TEMPLATE

Functions
int	ff_gain_map_params_check_xmp (const AVGainMapParams *p)
	Returns 1 if the gain map parameters are compatible with the XMP-based encoding, or 0 otherwise.
int	ff_gain_map_params_to_xmp (const AVGainMapParams *p, char *buf)
	Serialize an AVGainMapParams as an Ultra HDR XMP packet.

Macro Definition Documentation

XMP_GAIN_MAP_TEMPLATE

#define XMP_GAIN_MAP_TEMPLATE

Value:

    "<x:xmpmeta xmlns:x=\"adobe:ns:meta/\" x:xmptk=\"XMP Core 5.5.0\">\n"     \
    "  <rdf:RDF xmlns:rdf=\"http://www.w3.org/1999/02/22-rdf-syntax-ns#\">\n" \
    "    <rdf:Description rdf:about=\"\"\n"                                   \
    "     xmlns:hdrgm=\"" FF_GAIN_MAP_XMP_NAMESPACE "\"\n"                    \
    "     hdrgm:Version=\"1.0\"\n"                                            \
    "     hdrgm:GainMapMin=\"%g\"\n"                                          \
    "     hdrgm:GainMapMax=\"%g\"\n"                                          \
    "     hdrgm:Gamma=\"%g\"\n"                                               \
    "     hdrgm:OffsetSDR=\"%g\"\n"                                           \
    "     hdrgm:OffsetHDR=\"%g\"\n"                                           \
    "     hdrgm:HDRCapacityMin=\"%g\"\n"                                      \
    "     hdrgm:HDRCapacityMax=\"%g\"\n"                                      \
    "     hdrgm:BaseRenditionIsHDR=\"%s\"/>\n"                                \
    "  </rdf:RDF>\n"                                                          \
    "</x:xmpmeta>"

Definition at line 47 of file gain_map.c.

Referenced by ff_gain_map_params_to_xmp().

Function Documentation

ff_gain_map_params_check_xmp()

int ff_gain_map_params_check_xmp

(

const AVGainMapParams *

p

)

Returns 1 if the gain map parameters are compatible with the XMP-based encoding, or 0 otherwise.

Definition at line 31 of file gain_map.c.

Referenced by ff_gain_map_params_to_xmp(), ff_mjpeg_add_gain_map_size(), and want_gain_map_xmp().

ff_gain_map_params_to_xmp()

int ff_gain_map_params_to_xmp	(	const AVGainMapParams *	p,
		char *	buf )

Serialize an AVGainMapParams as an Ultra HDR XMP packet.

Parameters

p	parameters to serialize
buf	Byte buffer to fill with the serialized data. Must contain at least FF_GAIN_MAP_MAX_XMP_LEN bytes.

Returns

Number of bytes written on success, or a negative AVERROR on failure

Note

Always succeeds if ff_gain_map_params_check_xmp() returns 1.

Definition at line 67 of file gain_map.c.

Referenced by jpeg_put_comments().