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cinedec: report white balance gain coefficients using metadata 

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 2093c1dc51)
This commit is contained in:
Peter Ross 2014-11-09 12:05:41 +11:00 committed by Carl Eugen Hoyos
parent 222236317b
commit e386241d54
1 changed files with 15 additions and 1 deletions
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16
libavformat/cinedec.c
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@ -27,6 +27,7 @@
#include "libavutil/intreadwrite.h"
#include "libavcodec/bmp.h"
#include "libavutil/intfloat.h"
#include "avformat.h"
#include "internal.h"
@ -78,6 +79,16 @@ static int set_metadata_int(AVDictionary **dict, const char *key, int value, int
return 0;
}
static int set_metadata_float(AVDictionary **dict, const char *key, float value, int allow_zero)
{
if (value != 0 || allow_zero) {
char tmp[64];
snprintf(tmp, sizeof(tmp), "%f", value);
return av_dict_set(dict, key, tmp, 0);
}
return 0;
}
static int cine_read_header(AVFormatContext *avctx)
{
AVIOContext *pb = avctx->pb;
@ -177,7 +188,10 @@ static int cine_read_header(AVFormatContext *avctx)
set_metadata_int(&st->metadata, "contrast", avio_rl32(pb), 1);
set_metadata_int(&st->metadata, "gamma", avio_rl32(pb), 1);
avio_skip(pb, 72); // Reserved1 .. WBView
avio_skip(pb, 12 + 16); // Reserved1 .. AutoExpRect
set_metadata_float(&st->metadata, "wbgain[0].r", av_int2float(avio_rl32(pb)), 1);
set_metadata_float(&st->metadata, "wbgain[0].b", av_int2float(avio_rl32(pb)), 1);
avio_skip(pb, 36); // WBGain[1].. WBView
st->codec->bits_per_coded_sample = avio_rl32(pb);