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mxfmux: Add support for muxing VC-3 (aka DNxHD) video

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This commit is contained in:
Sebastian Dröge 2009-03-11 19:33:54 +01:00
parent 60d0dc07bf
commit 244c0a4707
1 changed files with 81 additions and 0 deletions
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81
gst/mxf/mxfvc3.c
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@ -26,9 +26,11 @@
#endif #endif
#include <gst/gst.h> #include <gst/gst.h>
#include <gst/video/video.h>
#include <string.h> #include <string.h>
#include "mxfvc3.h" #include "mxfvc3.h"
#include "mxfwrite.h"
GST_DEBUG_CATEGORY_EXTERN (mxf_debug); GST_DEBUG_CATEGORY_EXTERN (mxf_debug);
#define GST_CAT_DEFAULT mxf_debug #define GST_CAT_DEFAULT mxf_debug
@ -154,8 +156,87 @@ static const MXFEssenceElementHandler mxf_vc3_essence_element_handler = {
mxf_vc3_create_caps mxf_vc3_create_caps
}; };
static GstFlowReturn
mxf_vc3_write_func (GstBuffer * buffer, GstCaps * caps, gpointer mapping_data,
GstAdapter * adapter, GstBuffer ** outbuf, gboolean flush)
{
*outbuf = buffer;
return GST_FLOW_OK;
}
/* FIXME: In which version was this added? Byte 7, assuming version 10 */
static const guint8 vc3_essence_container_ul[] = {
0x06, 0x0e, 0x2b, 0x34, 0x04, 0x01, 0x01, 0x0A,
0x0d, 0x01, 0x03, 0x01, 0x02, 0x11, 0x01, 0x00
};
static MXFMetadataFileDescriptor *
mxf_vc3_get_descriptor (GstPadTemplate * tmpl, GstCaps * caps,
MXFEssenceElementWriteFunc * handler, gpointer * mapping_data)
{
MXFMetadataCDCIPictureEssenceDescriptor *ret;
GstStructure *s;
s = gst_caps_get_structure (caps, 0);
if (strcmp (gst_structure_get_name (s), "video/x-dnxhd") != 0)
return NULL;
ret = (MXFMetadataCDCIPictureEssenceDescriptor *)
gst_mini_object_new (MXF_TYPE_METADATA_CDCI_PICTURE_ESSENCE_DESCRIPTOR);
memcpy (&ret->parent.parent.essence_container, &vc3_essence_container_ul, 16);
mxf_metadata_generic_picture_essence_descriptor_from_caps (&ret->parent,
caps);
*handler = mxf_vc3_write_func;
return (MXFMetadataFileDescriptor *) ret;
}
static void
mxf_vc3_update_descriptor (MXFMetadataFileDescriptor * d, GstCaps * caps,
gpointer mapping_data, GstBuffer * buf)
{
return;
}
static void
mxf_vc3_get_edit_rate (MXFMetadataFileDescriptor * a, GstCaps * caps,
gpointer mapping_data, GstBuffer * buf, MXFMetadataSourcePackage * package,
MXFMetadataTimelineTrack * track, MXFFraction * edit_rate)
{
(*edit_rate).n = a->sample_rate.n;
(*edit_rate).d = a->sample_rate.d;
}
static guint32
mxf_vc3_get_track_number_template (MXFMetadataFileDescriptor * a,
GstCaps * caps, gpointer mapping_data)
{
return (0x15 << 24) | (0x05 << 8);
}
static MXFEssenceElementWriter mxf_vc3_essence_element_writer = {
mxf_vc3_get_descriptor,
mxf_vc3_update_descriptor,
mxf_vc3_get_edit_rate,
mxf_vc3_get_track_number_template,
NULL,
{{0,}}
};
void void
mxf_vc3_init (void) mxf_vc3_init (void)
{ {
mxf_essence_element_handler_register (&mxf_vc3_essence_element_handler); mxf_essence_element_handler_register (&mxf_vc3_essence_element_handler);
mxf_vc3_essence_element_writer.pad_template =
gst_pad_template_new ("vc3_video_sink_%u", GST_PAD_SINK, GST_PAD_REQUEST,
gst_caps_from_string ("video/x-dnxhd, width = " GST_VIDEO_SIZE_RANGE
", height = " GST_VIDEO_SIZE_RANGE ", framerate = "
GST_VIDEO_FPS_RANGE));
memcpy (&mxf_vc3_essence_element_writer.data_definition,
mxf_metadata_track_identifier_get (MXF_METADATA_TRACK_PICTURE_ESSENCE),
16);
mxf_essence_element_writer_register (&mxf_vc3_essence_element_writer);
} }