From 654f0627e4874ec9f010ab7e2d523bd2a3f3fba0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sebastian=20Dr=C3=B6ge?= <sebastian.droege@collabora.co.uk>
Date: Wed, 11 Mar 2009 19:34:12 +0100
Subject: mxfmux: Add support for muxing JPEG2000 code streams

---
 gst/mxf/mxfjpeg2000.c | 117 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 117 insertions(+)

(limited to 'gst/mxf/mxfjpeg2000.c')

diff --git a/gst/mxf/mxfjpeg2000.c b/gst/mxf/mxfjpeg2000.c
index c9d7b2aa..9ff13f70 100644
--- a/gst/mxf/mxfjpeg2000.c
+++ b/gst/mxf/mxfjpeg2000.c
@@ -31,9 +31,11 @@
 #endif
 
 #include <gst/gst.h>
+#include <gst/video/video.h>
 #include <string.h>
 
 #include "mxfjpeg2000.h"
+#include "mxfwrite.h"
 
 GST_DEBUG_CATEGORY_EXTERN (mxf_debug);
 #define GST_CAT_DEFAULT mxf_debug
@@ -202,8 +204,123 @@ static const MXFEssenceElementHandler mxf_jpeg2000_essence_element_handler = {
   mxf_jpeg2000_create_caps
 };
 
+static GstFlowReturn
+mxf_jpeg2000_write_func (GstBuffer * buffer, GstCaps * caps,
+    gpointer mapping_data, GstAdapter * adapter, GstBuffer ** outbuf,
+    gboolean flush)
+{
+  *outbuf = buffer;
+  return GST_FLOW_OK;
+}
+
+static const guint8 jpeg2000_essence_container_ul[] = {
+  0x06, 0x0e, 0x2b, 0x34, 0x04, 0x01, 0x01, 0x07,
+  0x0d, 0x01, 0x03, 0x01, 0x02, 0x0c, 0x01, 0x00
+};
+
+static const guint jpeg2000_picture_essence_coding[] = {
+  0x06, 0x0E, 0x2B, 0x34, 0x04, 0x01, 0x01, 0x07,
+  0x04, 0x01, 0x02, 0x02, 0x03, 0x01, 0x01, 0x00
+};
+
+static MXFMetadataFileDescriptor *
+mxf_jpeg2000_get_descriptor (GstPadTemplate * tmpl, GstCaps * caps,
+    MXFEssenceElementWriteFunc * handler, gpointer * mapping_data)
+{
+  MXFMetadataRGBAPictureEssenceDescriptor *ret;
+  GstStructure *s;
+  guint32 fourcc;
+
+  s = gst_caps_get_structure (caps, 0);
+  if (strcmp (gst_structure_get_name (s), "image/x-jpc") != 0)
+    return NULL;
+
+  if (!gst_structure_get_fourcc (s, "fourcc", &fourcc))
+    return NULL;
+
+  ret = (MXFMetadataRGBAPictureEssenceDescriptor *)
+      gst_mini_object_new (MXF_TYPE_METADATA_RGBA_PICTURE_ESSENCE_DESCRIPTOR);
+
+  memcpy (&ret->parent.parent.essence_container, &jpeg2000_essence_container_ul,
+      16);
+  memcpy (&ret->parent.picture_essence_coding, &jpeg2000_picture_essence_coding,
+      16);
+
+  if (fourcc == GST_MAKE_FOURCC ('s', 'R', 'G', 'B')) {
+    ret->n_pixel_layout = 3;
+    ret->pixel_layout = g_new0 (guint8, 6);
+    ret->pixel_layout[0] = 'R';
+    ret->pixel_layout[1] = 8;
+    ret->pixel_layout[2] = 'G';
+    ret->pixel_layout[3] = 8;
+    ret->pixel_layout[4] = 'B';
+    ret->pixel_layout[5] = 8;
+  } else if (fourcc == GST_MAKE_FOURCC ('s', 'Y', 'U', 'V')) {
+    ret->n_pixel_layout = 3;
+    ret->pixel_layout = g_new0 (guint8, 6);
+    ret->pixel_layout[0] = 'Y';
+    ret->pixel_layout[1] = 8;
+    ret->pixel_layout[2] = 'U';
+    ret->pixel_layout[3] = 8;
+    ret->pixel_layout[4] = 'V';
+    ret->pixel_layout[5] = 8;
+  } else {
+    g_assert_not_reached ();
+  }
+
+  mxf_metadata_generic_picture_essence_descriptor_from_caps (&ret->parent,
+      caps);
+  *handler = mxf_jpeg2000_write_func;
+
+  return (MXFMetadataFileDescriptor *) ret;
+}
+
+static void
+mxf_jpeg2000_update_descriptor (MXFMetadataFileDescriptor * d, GstCaps * caps,
+    gpointer mapping_data, GstBuffer * buf)
+{
+  return;
+}
+
+static void
+mxf_jpeg2000_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_jpeg2000_get_track_number_template (MXFMetadataFileDescriptor * a,
+    GstCaps * caps, gpointer mapping_data)
+{
+  return (0x15 << 24) | (0x08 << 8);
+}
+
+static MXFEssenceElementWriter mxf_jpeg2000_essence_element_writer = {
+  mxf_jpeg2000_get_descriptor,
+  mxf_jpeg2000_update_descriptor,
+  mxf_jpeg2000_get_edit_rate,
+  mxf_jpeg2000_get_track_number_template,
+  NULL,
+  {{0,}}
+};
+
 void
 mxf_jpeg2000_init (void)
 {
   mxf_essence_element_handler_register (&mxf_jpeg2000_essence_element_handler);
+
+  mxf_jpeg2000_essence_element_writer.pad_template =
+      gst_pad_template_new ("jpeg2000_video_sink_%u", GST_PAD_SINK,
+      GST_PAD_REQUEST,
+      gst_caps_from_string ("image/x-jpc, fields = 1, width = "
+          GST_VIDEO_SIZE_RANGE ", height = " GST_VIDEO_SIZE_RANGE
+          ", framerate = " GST_VIDEO_FPS_RANGE
+          ", fourcc = (GstFourcc) { sRGB, sYUV }"));
+  memcpy (&mxf_jpeg2000_essence_element_writer.data_definition,
+      mxf_metadata_track_identifier_get (MXF_METADATA_TRACK_PICTURE_ESSENCE),
+      16);
+  mxf_essence_element_writer_register (&mxf_jpeg2000_essence_element_writer);
 }
-- 
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