mxfdemux: add support for Apple ProRes

gst/mxf/meson.build

@@ -15,6 +15,7 @@ mxf_sources = [
   'mxfd10.c',
   'mxfup.c',
   'mxfvc3.c',
+  'mxfprores.c',
 #  'mxfdms1.c',
 ]
 

gst/mxf/mxf.c

@@ -34,6 +34,7 @@
 #include "mxfmpeg.h"
 #include "mxfup.h"
 #include "mxfvc3.h"
+#include "mxfprores.h"
 
 GST_DEBUG_CATEGORY (mxf_debug);
 #define GST_CAT_DEFAULT mxf_debug
@@ -68,6 +69,7 @@ plugin_init (GstPlugin * plugin)
   mxf_mpeg_init ();
   mxf_up_init ();
   mxf_vc3_init ();
+  mxf_prores_init ();
 
   /* mxfmux is disabled for now - it compiles but is completely untested */
   if (!gst_element_register (plugin, "mxfdemux", GST_RANK_PRIMARY,

gst/mxf/mxfprores.c

@@ -0,0 +1,210 @@
+/* GStreamer MXF Apple ProRes Mapping
+ * Copyright (C) 2019 Tim-Philipp Müller <tim@centricular.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gst/gst.h>
+#include <gst/video/video.h>
+#include <string.h>
+
+#include "mxfprores.h"
+#include "mxfessence.h"
+
+GST_DEBUG_CATEGORY_EXTERN (mxf_debug);
+#define GST_CAT_DEFAULT mxf_debug
+
+/* Implementation of SMPTE RDD 44:2017-11 "Material Exchange Format - Mapping
+ * and Application of Apple ProRes"
+ */
+static gboolean
+mxf_is_prores_essence_track (const MXFMetadataTimelineTrack * track)
+{
+  guint i;
+
+  g_return_val_if_fail (track != NULL, FALSE);
+
+  if (track->parent.descriptor == NULL)
+    return FALSE;
+
+  for (i = 0; i < track->parent.n_descriptor; i++) {
+    MXFMetadataFileDescriptor *d = track->parent.descriptor[i];
+    MXFUL *key;
+
+    if (!d)
+      continue;
+
+    key = &d->essence_container;
+    if (mxf_is_generic_container_essence_container_label (key) &&
+        key->u[12] == 0x02 && key->u[13] == 0x1C) {
+      return TRUE;
+    }
+  }
+
+  return FALSE;
+}
+
+static GstFlowReturn
+mxf_prores_handle_essence_element (const MXFUL * key, GstBuffer * buffer,
+    GstCaps * caps,
+    MXFMetadataTimelineTrack * track,
+    gpointer mapping_data, GstBuffer ** outbuf)
+{
+  *outbuf = buffer;
+
+  /* SMPTE RDD 41:2017-11 6.3 */
+  if (key->u[12] != 0x15 || key->u[14] != 0x17) {
+    GST_MEMDUMP ("Essence element", &key->u[0], 16);
+    GST_ERROR ("Invalid ProRes essence element");
+    return GST_FLOW_ERROR;
+  }
+
+  return GST_FLOW_OK;
+}
+
+static MXFEssenceWrapping
+mxf_prores_get_track_wrapping (const MXFMetadataTimelineTrack * track)
+{
+  guint i;
+
+  g_return_val_if_fail (track != NULL, MXF_ESSENCE_WRAPPING_CUSTOM_WRAPPING);
+
+  if (track->parent.descriptor == NULL) {
+    GST_ERROR ("No descriptor found for this track");
+    return MXF_ESSENCE_WRAPPING_CUSTOM_WRAPPING;
+  }
+
+  for (i = 0; i < track->parent.n_descriptor; i++) {
+    if (!track->parent.descriptor[i])
+      continue;
+
+    if (!MXF_IS_METADATA_GENERIC_PICTURE_ESSENCE_DESCRIPTOR (track->
+            parent.descriptor[i]))
+      continue;
+
+    /* sanity check */
+    if (track->parent.descriptor[i]->essence_container.u[13] != 0x1C)
+      return MXF_ESSENCE_WRAPPING_CUSTOM_WRAPPING;
+
+    switch (track->parent.descriptor[i]->essence_container.u[14]) {
+      case 0x01:
+        return MXF_ESSENCE_WRAPPING_FRAME_WRAPPING;
+      case 0x02:
+        return MXF_ESSENCE_WRAPPING_CLIP_WRAPPING;
+      default:
+        return MXF_ESSENCE_WRAPPING_CUSTOM_WRAPPING;
+    }
+  }
+
+  return MXF_ESSENCE_WRAPPING_CUSTOM_WRAPPING;
+}
+
+static GstCaps *
+mxf_prores_create_caps (MXFMetadataTimelineTrack * track, GstTagList ** tags,
+    gboolean * intra_only, MXFEssenceElementHandleFunc * handler,
+    gpointer * mapping_data)
+{
+  MXFMetadataGenericPictureEssenceDescriptor *d = NULL;
+  const gchar *variant;
+  GstCaps *caps;
+  guint i;
+
+  g_return_val_if_fail (track != NULL, NULL);
+
+  if (track->parent.descriptor == NULL) {
+    GST_ERROR ("No descriptor found for this track");
+    return NULL;
+  }
+
+  for (i = 0; i < track->parent.n_descriptor; i++) {
+    if (MXF_IS_METADATA_GENERIC_PICTURE_ESSENCE_DESCRIPTOR (track->
+            parent.descriptor[i])) {
+      d = MXF_METADATA_GENERIC_PICTURE_ESSENCE_DESCRIPTOR (track->
+          parent.descriptor[i]);
+      break;
+    }
+  }
+
+  if (d == NULL) {
+    GST_ERROR ("No picture essence coding descriptor found for this track");
+    return NULL;
+  }
+
+  if (d->picture_essence_coding.u[13] != 0x06) {
+    GST_MEMDUMP ("Picture essence", &d->picture_essence_coding.u[0], 16);
+    GST_ERROR ("Picture essence coding descriptor not for ProRes?!");
+    return NULL;
+  }
+
+  GST_INFO ("Found Apple ProRes video stream");
+
+  switch (d->picture_essence_coding.u[14]) {
+    case 0x01:
+      variant = "proxy";
+      break;
+    case 0x02:
+      variant = "lt";
+      break;
+    case 0x03:
+      variant = "standard";
+      break;
+    case 0x04:
+      variant = "hq";
+      break;
+    case 0x05:
+      variant = "4444";
+      break;
+    case 0x06:
+      variant = "4444xq";
+      break;
+    default:
+      GST_ERROR ("Unknown ProRes profile %2d", d->picture_essence_coding.u[14]);
+      return NULL;
+  }
+
+  *handler = mxf_prores_handle_essence_element;
+
+  caps = gst_caps_new_simple ("video/x-prores",
+      "variant", G_TYPE_STRING, variant, NULL);
+
+  if (d)
+    mxf_metadata_generic_picture_essence_descriptor_set_caps (d, caps);
+
+  if (!*tags)
+    *tags = gst_tag_list_new_empty ();
+
+  gst_tag_list_add (*tags, GST_TAG_MERGE_APPEND, GST_TAG_CODEC, "Apple ProRes",
+      NULL);
+
+  *intra_only = TRUE;
+
+  return caps;
+}
+
+static const MXFEssenceElementHandler mxf_prores_essence_element_handler = {
+  mxf_is_prores_essence_track,
+  mxf_prores_get_track_wrapping,
+  mxf_prores_create_caps
+};
+
+void
+mxf_prores_init (void)
+{
+  mxf_essence_element_handler_register (&mxf_prores_essence_element_handler);
+}

gst/mxf/mxfprores.h

@@ -0,0 +1,26 @@
+/* GStreamer MXF Apple ProRes Mapping
+ * Copyright (C) 2019 Tim-Philipp Müller <tim@centricular.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+#ifndef __MXF_PRORES_H__
+#define __MXF_PRORES_H__
+
+#include <gst/gst.h>
+
+void mxf_prores_init (void);
+
+#endif /* __MXF_PRORES_H__ */