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mxf: Add support for muxing/demuxing subsampled YUV formats

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This commit is contained in:
Sebastian Dröge 2009-03-16 17:49:40 +01:00
parent c95ba980b2
commit c6730cd223
1 changed files with 105 additions and 4 deletions
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109
gst/mxf/mxfup.c
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@ -78,6 +78,21 @@ static const struct
'A', 8, 'Y', 8, 'U', 8, 'V', 8}, GST_MAKE_FOURCC ('A', 'Y', 'U', 'V')}
};
static const struct
{
const gchar *caps;
guint bpp;
guint horizontal_subsampling;
guint vertical_subsampling;
gboolean reversed_byte_order;
guint32 fourcc;
} _cdci_mapping_table[] = {
{
GST_VIDEO_CAPS_YUV ("YUY2"), 2, 1, 0, TRUE, GST_MAKE_FOURCC ('Y', 'U', 'Y',
'2')}, {
GST_VIDEO_CAPS_YUV ("UYVY"), 2, 1, 0, FALSE, GST_MAKE_FOURCC ('U', 'Y', 'V',
'Y')},};
typedef struct
{
guint32 fourcc; /* fourcc or RGB format specifier */
@ -225,6 +240,52 @@ mxf_up_rgba_create_caps (MXFMetadataTimelineTrack * track,
return caps;
}
static GstCaps *
mxf_up_cdci_create_caps (MXFMetadataTimelineTrack * track,
MXFMetadataCDCIPictureEssenceDescriptor * d, GstTagList ** tags,
MXFEssenceElementHandleFunc * handler, gpointer * mapping_data)
{
GstCaps *caps = NULL;
guint i;
guint32 fourcc;
guint bpp;
for (i = 0; i < G_N_ELEMENTS (_cdci_mapping_table); i++) {
if (_cdci_mapping_table[i].horizontal_subsampling ==
d->horizontal_subsampling
&& _cdci_mapping_table[i].vertical_subsampling ==
d->vertical_subsampling
&& _cdci_mapping_table[i].reversed_byte_order ==
d->reversed_byte_order) {
caps = gst_caps_from_string (_cdci_mapping_table[i].caps);
fourcc = _cdci_mapping_table[i].fourcc;
bpp = _cdci_mapping_table[i].bpp;
break;
}
}
if (caps) {
MXFUPMappingData *data = g_new0 (MXFUPMappingData, 1);
mxf_metadata_generic_picture_essence_descriptor_set_caps (&d->parent, caps);
data->width = d->parent.stored_width;
data->height = d->parent.stored_height;
data->fourcc = fourcc;
data->bpp = bpp;
data->image_start_offset =
((MXFMetadataGenericPictureEssenceDescriptor *) d)->image_start_offset;
data->image_end_offset =
((MXFMetadataGenericPictureEssenceDescriptor *) d)->image_end_offset;
*mapping_data = data;
} else {
GST_WARNING ("Unsupported CDCI format");
}
return caps;
}
static GstCaps *
mxf_up_create_caps (MXFMetadataTimelineTrack * track, GstTagList ** tags,
MXFEssenceElementHandleFunc * handler, gpointer * mapping_data)
@ -271,8 +332,9 @@ mxf_up_create_caps (MXFMetadataTimelineTrack * track, GstTagList ** tags,
if (r) {
caps = mxf_up_rgba_create_caps (track, r, tags, handler, mapping_data);
} else if (c) {
caps = mxf_up_cdci_create_caps (track, c, tags, handler, mapping_data);
} else {
GST_ERROR ("CDCI uncompressed picture essence not supported yet");
return NULL;
}
@ -379,8 +441,45 @@ static MXFMetadataFileDescriptor *
mxf_up_get_cdci_descriptor (GstPadTemplate * tmpl, GstCaps * caps,
MXFEssenceElementWriteFunc * handler, gpointer * mapping_data)
{
g_assert_not_reached ();
return NULL;
MXFMetadataCDCIPictureEssenceDescriptor *ret;
guint i;
GstCaps *tmp, *intersection;
MXFUPMappingData *md = g_new0 (MXFUPMappingData, 1);
*mapping_data = md;
ret = (MXFMetadataCDCIPictureEssenceDescriptor *)
gst_mini_object_new (MXF_TYPE_METADATA_CDCI_PICTURE_ESSENCE_DESCRIPTOR);
for (i = 0; i < G_N_ELEMENTS (_cdci_mapping_table); i++) {
tmp = gst_caps_from_string (_cdci_mapping_table[i].caps);
intersection = gst_caps_intersect (caps, tmp);
gst_caps_unref (tmp);
if (!gst_caps_is_empty (intersection)) {
gst_caps_unref (intersection);
ret->horizontal_subsampling =
_cdci_mapping_table[i].horizontal_subsampling;
ret->vertical_subsampling = _cdci_mapping_table[i].vertical_subsampling;
ret->reversed_byte_order = _cdci_mapping_table[i].reversed_byte_order;
md->fourcc = _cdci_mapping_table[i].fourcc;
md->bpp = _cdci_mapping_table[i].bpp;
break;
}
gst_caps_unref (intersection);
}
memcpy (&ret->parent.parent.essence_container, &up_essence_container_ul, 16);
mxf_metadata_generic_picture_essence_descriptor_from_caps (&ret->parent,
caps);
md->width = ret->parent.stored_width;
md->height = ret->parent.stored_height;
*handler = mxf_up_write_func;
return (MXFMetadataFileDescriptor *) ret;
}
static MXFMetadataFileDescriptor *
@ -457,7 +556,9 @@ mxf_up_init (void)
GST_VIDEO_CAPS_RGBA "; "
GST_VIDEO_CAPS_ABGR "; "
GST_VIDEO_CAPS_BGRA "; "
GST_VIDEO_CAPS_YUV ("AYUV") "; " GST_VIDEO_CAPS_YUV ("v308")));
GST_VIDEO_CAPS_YUV ("AYUV") "; "
GST_VIDEO_CAPS_YUV ("v308") "; "
GST_VIDEO_CAPS_YUV ("UYVY") "; " GST_VIDEO_CAPS_YUV ("YUY2")));
memcpy (&mxf_up_essence_element_writer.data_definition,
mxf_metadata_track_identifier_get (MXF_METADATA_TRACK_PICTURE_ESSENCE),