Muxer writes (in jpeg only) whole IPTC chunk sent as tag. Muxer implemets GstTagSetter interface.

Original commit message from CVS:
Muxer writes (in jpeg only) whole IPTC chunk sent as tag. Muxer implemets GstTagSetter interface.

ChangeLog

@@ -1,3 +1,17 @@
+2007-12-03  Edgard Lima  <edgard.lima@indt.org.br>
+
+	* ext/metadata/gstmetadatamux.c:
+	* ext/metadata/gstmetadatamux.h:
+	* ext/metadata/metadataexif.c:
+	* ext/metadata/metadataexif.h:
+	* ext/metadata/metadataiptc.c:
+	* ext/metadata/metadataiptc.h:
+	* ext/metadata/metadatamuxjpeg.c:
+	* ext/metadata/metadataxmp.c:
+	* ext/metadata/metadataxmp.h:
+	  Muxer writes (in jpeg only) whole IPTC chunk sent as tag. Muxer
+	  implemets GstTagSetter interface.
+
 2007-12-03  Thijs Vermeir  <thijsvermeir@gmail.com>
 
 	* gst/librfb/rfbdecoder.c:

ext/metadata/gstmetadatamux.c

@@ -104,8 +104,17 @@ static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
     GST_STATIC_CAPS ("image/jpeg; " "image/png")
     );
 
-GST_BOILERPLATE (GstMetadataMux, gst_metadata_mux, GstElement,
+static void
-    GST_TYPE_ELEMENT);
+gst_metadata_mux_add_interfaces (GType type)
+{
+  static const GInterfaceInfo tag_setter_info = { NULL, NULL, NULL };
+
+  g_type_add_interface_static (type, GST_TYPE_TAG_SETTER, &tag_setter_info);
+}
+
+
+GST_BOILERPLATE_FULL (GstMetadataMux, gst_metadata_mux, GstElement,
+    GST_TYPE_ELEMENT, gst_metadata_mux_add_interfaces);
 
 static GstMetadataMuxClass *metadata_parent_class = NULL;
 
@@ -526,9 +535,11 @@ gst_metadata_mux_sink_event (GstPad * pad, GstEvent * event)
     case GST_EVENT_TAG:
     {
       GstTagList *taglist = NULL;
+      GstTagSetter *setter = GST_TAG_SETTER (filter);
 
       gst_event_parse_tag (event, &taglist);
-      gst_tag_list_insert (filter->taglist, taglist, GST_TAG_MERGE_REPLACE);
+      gst_tag_setter_merge_tags (setter, taglist, GST_TAG_MERGE_REPLACE);
+
     }
       break;
     default:
@@ -578,11 +589,6 @@ gst_metadata_mux_dispose_members (GstMetadataMux * filter)
     filter->adapter_holding = NULL;
   }
 
-  if (filter->taglist) {
-    gst_tag_list_free (filter->taglist);
-    filter->taglist = NULL;
-  }
-
   if (filter->append_buffer) {
     gst_buffer_unref (filter->append_buffer);
     filter->append_buffer = NULL;
@@ -602,7 +608,6 @@ gst_metadata_mux_init_members (GstMetadataMux * filter)
   filter->iptc = FALSE;
   filter->xmp = FALSE;
 
-  filter->taglist = NULL;
   filter->adapter_parsing = NULL;
   filter->adapter_holding = NULL;
   filter->next_offset = 0;
@@ -801,26 +806,31 @@ gst_metadata_create_chunks_from_tags (GstMetadataMux * filter)
 {
 
   GstMessage *msg;
-  GstTagList *taglist;
+  GstTagSetter *setter = GST_TAG_SETTER (filter);
+  const GstTagList *taglist = gst_tag_setter_get_tag_list (setter);
   GstEvent *event;
   guint8 *buf = NULL;
   guint32 size = 0;
 
+  if (taglist) {
+
     if (META_DATA_OPTION (filter->mux_data) & META_OPT_EXIF) {
-    metadatamux_exif_create_chunk_from_tag_list (&buf, &size, filter->taglist);
+      metadatamux_exif_create_chunk_from_tag_list (&buf, &size, taglist);
       gst_metadata_update_segment (filter, &buf, &size, MD_CHUNK_EXIF);
     }
 
     if (META_DATA_OPTION (filter->mux_data) & META_OPT_IPTC) {
-    metadatamux_iptc_create_chunk_from_tag_list (&buf, &size, filter->taglist);
+      metadatamux_iptc_create_chunk_from_tag_list (&buf, &size, taglist);
       gst_metadata_update_segment (filter, &buf, &size, MD_CHUNK_IPTC);
     }
 
     if (META_DATA_OPTION (filter->mux_data) & META_OPT_XMP) {
-    metadatamux_xmp_create_chunk_from_tag_list (&buf, &size, filter->taglist);
+      metadatamux_xmp_create_chunk_from_tag_list (&buf, &size, taglist);
       gst_metadata_update_segment (filter, &buf, &size, MD_CHUNK_XMP);
     }
 
+  }
+
   metadata_chunk_array_remove_zero_size (&filter->mux_data.inject_chunks);
 
 }
@@ -900,8 +910,8 @@ gst_metadata_mux_calculate_offsets (GstMetadataMux * filter)
   guint32 bytes_striped, bytes_inject;
   MetadataChunk *strip = filter->mux_data.strip_chunks.chunk;
   MetadataChunk *inject = filter->mux_data.inject_chunks.chunk;
-  const gsize strip_len = filter->mux_data.strip_chunks.len;
+  gsize strip_len;
-  const gsize inject_len = filter->mux_data.inject_chunks.len;
+  gsize inject_len;
 
   if (filter->state != MT_STATE_MUXED)
     return FALSE;
@@ -910,6 +920,9 @@ gst_metadata_mux_calculate_offsets (GstMetadataMux * filter)
 
   metadata_lazy_update (&filter->mux_data);
 
+  strip_len = filter->mux_data.strip_chunks.len;
+  inject_len = filter->mux_data.inject_chunks.len;
+
   bytes_striped = 0;
   bytes_inject = 0;
 
@@ -1755,7 +1768,6 @@ gst_metadata_mux_change_state (GstElement * element, GstStateChange transition)
     case GST_STATE_CHANGE_NULL_TO_READY:
       gst_metadata_mux_init_members (filter);
       filter->adapter_parsing = gst_adapter_new ();
-      filter->taglist = gst_tag_list_new ();
       metadata_init (&filter->mux_data, FALSE);
       break;
     default:

ext/metadata/gstmetadatamux.h

@@ -98,7 +98,6 @@ struct _GstMetadataMux
 
   gboolean need_more_data;
 
-  GstTagList *taglist;
   gboolean need_calculate_offset; /* mux need to calculate offsets of insert chunks */
 
 };

ext/metadata/metadataexif.c

@@ -65,7 +65,7 @@ metadataparse_exif_tag_list_add (GstTagList * taglist, GstTagMergeMode mode,
 
 void
 metadatamux_exif_create_chunk_from_tag_list (guint8 ** buf, guint32 * size,
-    GstTagList * taglist)
+    const GstTagList * taglist)
 {
   /* do nothing */
 }
@@ -203,7 +203,7 @@ exif_content_foreach_entry_func (ExifEntry * entry, void *user_data)
 
 void
 metadatamux_exif_create_chunk_from_tag_list (guint8 ** buf, guint32 * size,
-    GstTagList * taglist)
+    const GstTagList * taglist)
 {
   ExifData *ed = NULL;
   GstBuffer *exif_chunk = NULL;

ext/metadata/metadataexif.h

@@ -56,7 +56,7 @@ metadataparse_exif_tag_list_add (GstTagList * taglist, GstTagMergeMode mode,
 
 extern void
 metadatamux_exif_create_chunk_from_tag_list (guint8 ** buf, guint32 *size,
-    GstTagList * taglist);
+    const GstTagList * taglist);
 
 G_END_DECLS
 #endif /* __GST_METADATAPARSE_EXIF_H__ */

ext/metadata/metadataiptc.c

@@ -66,7 +66,7 @@ metadataparse_iptc_tag_list_add (GstTagList * taglist, GstTagMergeMode mode,
 
 void
 metadatamux_iptc_create_chunk_from_tag_list (guint8 ** buf, guint32 * size,
-    GstTagList * taglist)
+    const GstTagList * taglist)
 {
   /* do nothing */
 }
@@ -133,8 +133,11 @@ iptc_data_foreach_dataset_func (IptcDataSet * dataset, void *user_data)
 
 void
 metadatamux_iptc_create_chunk_from_tag_list (guint8 ** buf, guint32 * size,
-    GstTagList * taglist)
+    const GstTagList * taglist)
 {
+  GstBuffer *iptc_chunk = NULL;
+  const GValue *val = NULL;
+
   if (!(buf && size))
     goto done;
   if (*buf) {
@@ -143,6 +146,16 @@ metadatamux_iptc_create_chunk_from_tag_list (guint8 ** buf, guint32 * size,
   }
   *size = 0;
 
+  val = gst_tag_list_get_value_index (taglist, GST_TAG_IPTC, 0);
+  if (val) {
+    iptc_chunk = gst_value_get_buffer (val);
+    if (iptc_chunk) {
+      *size = GST_BUFFER_SIZE (iptc_chunk);
+      *buf = g_new (guint8, *size);
+      memcpy (*buf, GST_BUFFER_DATA (iptc_chunk), *size);
+    }
+  }
+
 done:
 
   return;

ext/metadata/metadataiptc.h

@@ -56,7 +56,7 @@ metadataparse_iptc_tag_list_add (GstTagList * taglist, GstTagMergeMode mode,
 
 extern void
 metadatamux_iptc_create_chunk_from_tag_list (guint8 ** buf, guint32 *size,
-    GstTagList * taglist);
+    const GstTagList * taglist);
 
 G_END_DECLS
 #endif /* __GST_METADATAPARSE_IPTC_H__ */

ext/metadata/metadatamuxjpeg.c

@@ -77,6 +77,7 @@ void
 metadatamux_jpeg_lazy_update (JpegMuxData * jpeg_data)
 {
   gsize i;
+  gboolean has_exif = FALSE;
 
   for (i = 0; i < jpeg_data->inject_chunks->len; ++i) {
     if (jpeg_data->inject_chunks->chunk[i].size > 0 &&
@@ -85,6 +86,28 @@ metadatamux_jpeg_lazy_update (JpegMuxData * jpeg_data)
         case MD_CHUNK_EXIF:
           metadatamux_wrap_chunk (&jpeg_data->inject_chunks->chunk[i], NULL, 0,
               0xFF, 0xE1);
+          has_exif = TRUE;
+          break;
+        case MD_CHUNK_IPTC:
+        {
+          unsigned int size = jpeg_data->inject_chunks->chunk[i].size + 256;
+          unsigned char *buf = g_new (guint8, size);
+
+          size = iptc_jpeg_ps3_save_iptc (NULL, 0,
+              jpeg_data->inject_chunks->chunk[i].data,
+              jpeg_data->inject_chunks->chunk[i].size, buf, size);
+          if (size > 0) {
+            g_free (jpeg_data->inject_chunks->chunk[i].data);
+            jpeg_data->inject_chunks->chunk[i].data = buf;
+            jpeg_data->inject_chunks->chunk[i].size = size;
+            metadatamux_wrap_chunk (&jpeg_data->inject_chunks->chunk[i], NULL,
+                0, 0xFF, 0xED);
+          } else {
+            GST_ERROR ("Invalid IPTC chunk\n");
+            g_free (buf);
+            /* FIXME: remove entry from list */
+          }
+        }
           break;
         case MD_CHUNK_XMP:
         {
@@ -99,7 +122,7 @@ metadatamux_jpeg_lazy_update (JpegMuxData * jpeg_data)
       }
     }
   }
-  if (i == jpeg_data->inject_chunks->len) {
+  if (!has_exif) {
     /* EXIF not injected so not strip JFIF anymore */
     metadata_chunk_array_clear (jpeg_data->strip_chunks);
   }

ext/metadata/metadataxmp.c

@@ -76,7 +76,7 @@ metadataparse_xmp_dispose (void)
 
 void
 metadatamux_xmp_create_chunk_from_tag_list (guint8 ** buf, guint32 * size,
-    GstTagList * taglist)
+    const GstTagList * taglist)
 {
   /* do nothing */
 }
@@ -248,7 +248,7 @@ metadataparse_xmp_iter (XmpPtr xmp, XmpIteratorPtr iter)
 
 void
 metadatamux_xmp_create_chunk_from_tag_list (guint8 ** buf, guint32 * size,
-    GstTagList * taglist)
+    const GstTagList * taglist)
 {
   GstBuffer *xmp_chunk = NULL;
   const GValue *val = NULL;

ext/metadata/metadataxmp.h

@@ -60,7 +60,7 @@ extern void metadataparse_xmp_dispose (void);
 
 extern void
 metadatamux_xmp_create_chunk_from_tag_list (guint8 ** buf, guint32 *size,
-    GstTagList * taglist);
+    const GstTagList * taglist);
 
 G_END_DECLS
 #endif /* __GST_METADATAPARSE_XMP_H__ */