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matroska: Read only the data written in the scratch buffer 

The private buffer is 20bytes but depending on the type only 12 bytes
are actually filled.
This commit is contained in:
Luca Barbato 2017-04-07 11:41:27 +02:00
parent 6ac0e78183
commit d32d59bc97
1 changed files with 2 additions and 2 deletions
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4
libavformat/matroskaenc.c
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@ -686,7 +686,7 @@ static int mkv_write_video_projection(AVFormatContext *s, AVIOContext *pb,
avio_wb32(&b, spherical->bound_left);
avio_wb32(&b, spherical->bound_right);
put_ebml_binary(dyn_cp, MATROSKA_ID_VIDEOPROJECTIONPRIVATE,
private, sizeof(private));
private, avio_tell(&b));
break;
case AV_SPHERICAL_CUBEMAP:
ffio_init_context(&b, private, 12, 1, NULL, NULL, NULL, NULL);
@ -696,7 +696,7 @@ static int mkv_write_video_projection(AVFormatContext *s, AVIOContext *pb,
avio_wb32(&b, 0); // layout
avio_wb32(&b, spherical->padding);
put_ebml_binary(dyn_cp, MATROSKA_ID_VIDEOPROJECTIONPRIVATE,
private, sizeof(private));
private, avio_tell(&b));
break;
default:
av_log(s, AV_LOG_WARNING, "Unknown projection type\n");