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avformat/mxfdec: fix frame wrapping detection for J2K essence container

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For JPEG 2000 essence, the MXF input format module currently uses the value of
byte 14 of the essence container UL to determine whether the J2K essence is
clip- (byte 14 is 0x02) or frame-wrapped (byte 14 is 0x01). Otherwise it
assumes an unknown wrapping.

Additional wrappings are documented in SMPTE ST422:2019:

0x03: Interlaced Frame, 1 field/KLV
0x04: Interlaced Frame, 2 fields/KLV
0x05: Field-wrapped Picture Element
0x06: Frame-wrapped Picture Element

And these should also be handled as frame wrapped content.

Signed-off-by: Pierre-Anthony Lemieux <pal@sandflow.com>
Signed-off-by: Marton Balint <cus@passwd.hu>
This commit is contained in:
Pierre-Anthony Lemieux 2021-07-18 11:07:43 -07:00 committed by Marton Balint
parent 610658c146
commit 74e4382442
2 changed files with 7 additions and 2 deletions
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3
libavformat/mxf.h
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@ -76,7 +76,8 @@ typedef enum {
NormalWrap = 0,
D10D11Wrap,
RawAWrap,
RawVWrap
RawVWrap,
J2KWrap
} MXFWrappingIndicatorType;
typedef struct MXFLocalTagPair {

6
libavformat/mxfdec.c
View File

@ -1411,7 +1411,7 @@ static void *mxf_resolve_strong_ref(MXFContext *mxf, UID *strong_ref, enum MXFMe
static const MXFCodecUL mxf_picture_essence_container_uls[] = {
// video essence container uls
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x0c,0x01,0x00 }, 14, AV_CODEC_ID_JPEG2000, NULL, 14 },
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x0c,0x01,0x00 }, 14, AV_CODEC_ID_JPEG2000, NULL, 14, J2KWrap },
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x02,0x0d,0x01,0x03,0x01,0x02,0x10,0x60,0x01 }, 14, AV_CODEC_ID_H264, NULL, 15 }, /* H.264 */
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x02,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 }, 14, AV_CODEC_ID_DNXHD, NULL, 14 }, /* VC-3 */
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x02,0x0d,0x01,0x03,0x01,0x02,0x12,0x01,0x00 }, 14, AV_CODEC_ID_VC1, NULL, 14 }, /* VC-1 */
@ -1495,6 +1495,10 @@ static MXFWrappingScheme mxf_get_wrapping_kind(UID *essence_container_ul)
if (val == 0x02)
val = 0x01;
break;
case J2KWrap:
if (val != 0x02)
val = 0x01;
break;
}
if (val == 0x01)
return FrameWrapped;