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dpx: always write the image offset

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According to the DPX file format description found at
http://www.fileformat.info/format/dpx/egff.htm the ImageElement part of
the GenericImageHeader also contains an an offset to the real image data
beside the same member that can be found in the GenericFileHeader.

Libav keeps this member empty (=0) while some applications expects it to
be filled properly. FATE test updated accordingly.

Bug-Id: 742
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
This commit is contained in:
Zoltan Kovacs 2014-12-05 02:42:10 +00:00 committed by Vittorio Giovara
parent 250e077ee9
commit 4843a9c74f
2 changed files with 2 additions and 1 deletions
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1
libavcodec/dpxenc.c
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@ -144,6 +144,7 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
buf[802] = 2; /* linear colorimetric */
buf[803] = s->bits_per_component;
write16(buf + 804, s->bits_per_component == 10 ? 1 : 0); /* packing method */
write32(buf + 808, HEADER_SIZE); /* data offset */
/* Image source information header */
write32(buf + 1628, avctx->sample_aspect_ratio.num);

2
tests/ref/lavf/dpx
View File

@ -1,3 +1,3 @@
808ea110635774252439722a48329d61 *./tests/data/images/dpx/02.dpx
d2f0b4e854fda2d3b3bee84cef80593c *./tests/data/images/dpx/02.dpx
./tests/data/images/dpx/%02d.dpx CRC=0x28c7369b
305792 ./tests/data/images/dpx/02.dpx