| /* | |
| * This file is part of FFmpeg. | |
| * | |
| * FFmpeg is free software; you can redistribute it and/or | |
| * modify it under the terms of the GNU Lesser General Public | |
| * License as published by the Free Software Foundation; either | |
| * version 2.1 of the License, or (at your option) any later version. | |
| * | |
| * FFmpeg is distributed in the hope that it will be useful, | |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| * Lesser General Public License for more details. | |
| * | |
| * You should have received a copy of the GNU Lesser General Public | |
| * License along with FFmpeg; if not, write to the Free Software | |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| */ | |
| /** | |
| * @file | |
| * Serialization of AVGainMapParams into the metadata blobs that image formats | |
| * carry it in, and back. Kept separate from the codecs so that an encoder | |
| * writing the blob and a bitstream filter splicing it into an existing | |
| * bitstream can share the same code. | |
| */ | |
| #ifndef AVCODEC_GAIN_MAP_H | |
| #define AVCODEC_GAIN_MAP_H | |
| #include "libavutil/gain_map.h" | |
| /* May differ from AV_ISO21496_VERSION if libraries are not in sync */ | |
| #define FF_GAIN_MAP_VERSION 0 | |
| /* For XMP-based encoding */ | |
| #define FF_GAIN_MAP_XMP_IDENT "http://ns.adobe.com/xap/1.0/" | |
| #define FF_GAIN_MAP_XMP_NAMESPACE "http://ns.adobe.com/hdr-gain-map/1.0/" | |
| #define FF_GAIN_MAP_XMP_MAX_LEN 1024 | |
| /** | |
| * Returns 1 if the gain map parameters are compatible with the XMP-based | |
| * encoding, or 0 otherwise. | |
| */ | |
| int ff_gain_map_params_check_xmp(const AVGainMapParams *p); | |
| /** | |
| * Serialize an AVGainMapParams as an Ultra HDR XMP packet. | |
| * | |
| * @param p parameters to serialize | |
| * @param buf Byte buffer to fill with the serialized data. Must contain at | |
| * least FF_GAIN_MAP_MAX_XMP_LEN bytes. | |
| * | |
| * @return Number of bytes written on success, or a negative AVERROR on failure | |
| * | |
| * @note Always succeeds if ff_gain_map_params_check_xmp() returns 1. | |
| */ | |
| int ff_gain_map_params_to_xmp(const AVGainMapParams *p, char *buf); | |
| #endif /* AVCODEC_GAIN_MAP_H */ |