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gst/mxf/mxfjpeg2000.c: Implement detection of the colorspace used by the

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Original commit message from CVS:
* gst/mxf/mxfjpeg2000.c: (mxf_jpeg2000_create_caps):
Implement detection of the colorspace used by the
JPEG2000 codestream. XYZ colorspace isn't supported by
our decoders yet unfortunately.
This commit is contained in:
Sebastian Dröge 2008-12-09 13:44:45 +00:00
parent d23484c483
commit db08161b6d
2 changed files with 70 additions and 4 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2008-12-09 Sebastian Dröge <sebastian.droege@collabora.co.uk>
* gst/mxf/mxfjpeg2000.c: (mxf_jpeg2000_create_caps):
Implement detection of the colorspace used by the
JPEG2000 codestream. XYZ colorspace isn't supported by
our decoders yet unfortunately.
2008-12-08 Sebastian Dröge <sebastian.droege@collabora.co.uk>
* gst/mxf/mxfparse.c:

67
gst/mxf/mxfjpeg2000.c
View file

@ -87,6 +87,7 @@ mxf_jpeg2000_create_caps (MXFMetadataGenericPackage * package,
MXFMetadataGenericPictureEssenceDescriptor *p = NULL;
guint i;
GstCaps *caps = NULL;
guint32 fourcc;
g_return_val_if_fail (package != NULL, NULL);
g_return_val_if_fail (track != NULL, NULL);
@ -106,8 +107,8 @@ mxf_jpeg2000_create_caps (MXFMetadataGenericPackage * package,
p = (MXFMetadataGenericPictureEssenceDescriptor *) track->descriptor[i];
f = track->descriptor[i];
break;
} else if (((MXFMetadataGenericDescriptor *) track->descriptor[i])->
is_file_descriptor
} else if (((MXFMetadataGenericDescriptor *) track->
descriptor[i])->is_file_descriptor
&& ((MXFMetadataGenericDescriptor *) track->descriptor[i])->type !=
MXF_METADATA_MULTIPLE_DESCRIPTOR) {
f = track->descriptor[i];
@ -119,13 +120,71 @@ mxf_jpeg2000_create_caps (MXFMetadataGenericPackage * package,
return NULL;
}
fourcc = GST_MAKE_FOURCC ('s', 'R', 'G', 'B');
if (p
&& ((MXFMetadataGenericDescriptor *) p)->type ==
MXF_METADATA_CDCI_PICTURE_ESSENCE_DESCRIPTOR) {
fourcc = GST_MAKE_FOURCC ('s', 'Y', 'U', 'V');
} else if (p
&& ((MXFMetadataGenericDescriptor *) p)->type ==
MXF_METADATA_CDCI_PICTURE_ESSENCE_DESCRIPTOR) {
MXFMetadataRGBAPictureEssenceDescriptor *r =
(MXFMetadataRGBAPictureEssenceDescriptor *) p;
gboolean rgb = TRUE;
gboolean xyz = TRUE;
gboolean yuv = TRUE;
guint i;
if (r->pixel_layout) {
for (i = 0; i < r->n_pixel_layout; i++) {
guint8 c = r->pixel_layout[2 * i];
switch (c) {
case 'R':
case 'r':
case 'G':
case 'g':
case 'B':
case 'b':
xyz = yuv = FALSE;
break;
case 'Y':
case 'y':
rgb = FALSE;
break;
case 'U':
case 'u':
case 'V':
case 'v':
xyz = rgb = FALSE;
break;
case 'X':
case 'x':
case 'Z':
case 'z':
rgb = yuv = FALSE;
break;
default:
break;
}
}
if (rgb) {
fourcc = GST_MAKE_FOURCC ('s', 'R', 'G', 'B');
} else if (yuv) {
fourcc = GST_MAKE_FOURCC ('s', 'Y', 'U', 'V');
} else if (xyz) {
GST_ERROR ("JPEG2000 with XYZ colorspace not supported yet");
return NULL;
}
}
}
*handler = mxf_jpeg2000_handle_essence_element;
/* TODO: What about other field values? */
/* FIXME: For now assume sRGB but get the correct value from the descriptor */
caps =
gst_caps_new_simple ("image/x-jpc", "fields", G_TYPE_INT, 1, "fourcc",
GST_TYPE_FOURCC, GST_MAKE_FOURCC ('s', 'R', 'G', 'B'), NULL);
GST_TYPE_FOURCC, fourcc, NULL);
if (p) {
mxf_metadata_generic_picture_essence_descriptor_set_caps (p, caps);
} else {