qtdemux: Add parsing/dumping of nmhd / metx boxes

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2453>

diff --git a/subprojects/gst-plugins-good/gst/isomp4/fourcc.h b/subprojects/gst-plugins-good/gst/isomp4/fourcc.h
index 70b219b..32fa4c8 100644 (file)
--- a/subprojects/gst-plugins-good/gst/isomp4/fourcc.h
+++ b/subprojects/gst-plugins-good/gst/isomp4/fourcc.h
@@ -418,6 +418,8 @@ G_BEGIN_DECLS
 #define FOURCC_aavd     GST_MAKE_FOURCC('a','a','v','d')
 #define FOURCC_adrm     GST_MAKE_FOURCC('a','d','r','m')
 
+#define FOURCC_metx     GST_MAKE_FOURCC('m','e','t','x')
+
 G_END_DECLS
 
 #endif /* __FOURCC_H__ */

diff --git a/subprojects/gst-plugins-good/gst/isomp4/qtdemux_dump.c b/subprojects/gst-plugins-good/gst/isomp4/qtdemux_dump.c
index e061c46..45296c2 100644 (file)
--- a/subprojects/gst-plugins-good/gst/isomp4/qtdemux_dump.c
+++ b/subprojects/gst-plugins-good/gst/isomp4/qtdemux_dump.c
@@ -348,6 +348,32 @@ qtdemux_dump_stsd_av01 (GstQTDemux * qtdemux, GstByteReader * data, guint size,
   return TRUE;
 }
 
+static gboolean
+qtdemux_dump_stsd_metx (GstQTDemux * qtdemux, GstByteReader * data, int depth)
+{
+  const gchar *content_encoding;
+  const gchar *namespaces;
+  const gchar *schema_locations;
+
+  if (gst_byte_reader_get_remaining (data) < 6 + 2)
+    return FALSE;
+
+  gst_byte_reader_skip_unchecked (data, 6);
+  GST_LOG_OBJECT (qtdemux, "%*s    data reference:%d", depth, "",
+      GET_UINT16 (data));
+
+  if (!gst_byte_reader_get_string (data, &content_encoding) ||
+      !gst_byte_reader_get_string (data, &namespaces) ||
+      !gst_byte_reader_get_string (data, &schema_locations))
+    return FALSE;
+
+  GST_LOG ("%*s  content_encoding:          %s", depth, "", content_encoding);
+  GST_LOG ("%*s  namespaces:                %s", depth, "", namespaces);
+  GST_LOG ("%*s  schema_locations:          %s", depth, "", schema_locations);
+
+  return TRUE;
+}
+
 gboolean
 qtdemux_dump_stsd (GstQTDemux * qtdemux, GstByteReader * data, int depth)
 {
@@ -402,6 +428,10 @@ qtdemux_dump_stsd (GstQTDemux * qtdemux, GstByteReader * data, int depth)
         if (!qtdemux_dump_stsd_av01 (qtdemux, &sub, size, depth + 1))
           return FALSE;
         break;
+      case FOURCC_metx:
+        if (!qtdemux_dump_stsd_metx (qtdemux, &sub, depth + 1))
+          return FALSE;
+        break;
       default:
         /* Unknown stsd data, dump the bytes */
         if (!qtdemux_dump_unknown (qtdemux, &sub, depth + 1))

diff --git a/subprojects/gst-plugins-good/gst/isomp4/qtdemux_types.c b/subprojects/gst-plugins-good/gst/isomp4/qtdemux_types.c
index a78415a..df9c99a 100644 (file)
--- a/subprojects/gst-plugins-good/gst/isomp4/qtdemux_types.c
+++ b/subprojects/gst-plugins-good/gst/isomp4/qtdemux_types.c
@@ -54,6 +54,7 @@ static const QtNodeType qt_node_types[] = {
   {FOURCC_vmhd, "video media information", 0,
       qtdemux_dump_vmhd},
   {FOURCC_smhd, "sound media information", 0},
+  {FOURCC_nmhd, "null media information", 0},
   {FOURCC_gmhd, "base media information header", QT_FLAG_CONTAINER},
   {FOURCC_gmin, "base media info", 0, qtdemux_dump_gmin},
   {FOURCC_dinf, "data information", QT_FLAG_CONTAINER},
@@ -230,6 +231,7 @@ static const QtNodeType qt_node_types[] = {
   {FOURCC_aavd, "AAX encrypted audio", 0},
   {FOURCC_adrm, "AAX DRM key data", 0},
   {FOURCC_vttc, "VTTCueBox 14496-30", QT_FLAG_CONTAINER},
+  {FOURCC_metx, "XML MetaData Sample Entry", 0},
   {0, "unknown", 0,},
 };