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new f8a03cd98d avformat/framecrcenc: add support for Gain Map packet side
data
f8a03cd98d is described below
commit f8a03cd98daa81d16948308b5b1612aaaa831500
Author: James Almer <[email protected]>
AuthorDate: Sat Oct 24 22:44:12 2026 -0300
Commit: James Almer <[email protected]>
CommitDate: Thu Nov 5 12:07:16 2026 -0300
avformat/framecrcenc: add support for Gain Map packet side data
Signed-off-by: James Almer <[email protected]>
---
libavformat/framecrcenc.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/libavformat/framecrcenc.c b/libavformat/framecrcenc.c
index 25c59132e9..e9b4382583 100644
--- a/libavformat/framecrcenc.c
+++ b/libavformat/framecrcenc.c
@@ -24,6 +24,7 @@
#include "config.h"
#include "libavutil/adler32.h"
#include "libavutil/avstring.h"
+#include "libavutil/gain_map.h"
#include "libavutil/hdr_dynamic_metadata.h"
#include "libavutil/intreadwrite.h"
@@ -158,6 +159,25 @@ static int framecrc_write_packet(struct AVFormatContext
*s, AVPacket *pkt)
BSWAP_RAT(AVDynamicHDRPlus,
mastering_display_actual_peak_luminance[i][j]);
}
}
+ goto pod;
+ case AV_PKT_DATA_GAIN_MAP_PARAMS:
+ if (sd->size == sizeof(AVGainMapParams)) {
+ memcpy(bswap_buf, sd->data, sizeof(AVGainMapParams));
+ data = bswap_buf;
+ BSWAP(AVGainMapParams, version);
+ BSWAP(AVGainMapParams, use_base_color_space);
+ BSWAP_RAT(AVGainMapParams, base_hdr_headroom);
+ BSWAP_RAT(AVGainMapParams, alternate_hdr_headroom);
+ for (int i = 0; i <
FF_ARRAY_ELEMS(((AVGainMapParams*)0)->channels); i++) {
+ BSWAP_RAT(AVGainMapParams, channels[i].gain_map_min);
+ BSWAP_RAT(AVGainMapParams, channels[i].gain_map_max);
+ BSWAP_RAT(AVGainMapParams, channels[i].gamma);
+ BSWAP_RAT(AVGainMapParams, channels[i].base_offset);
+ BSWAP_RAT(AVGainMapParams,
channels[i].alternate_offset);
+ }
+ BSWAP(AVGainMapParams, nb_channels);
+ }
+ av_fallthrough;
pod:
#endif
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