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tag: id3v2: Put ID3v2 frames we can't parse as binary blobs into private tags, so that they are not lost ...

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Original commit message from CVS:
* gst-libs/gst/tag/id3v2.c:
(id3demux_add_id3v2_frame_blob_to_taglist),
(id3demux_id3v2_frames_to_tag_list):
Put ID3v2 frames we can't parse as binary blobs into private
tags, so that they are not lost when retagging, at least once
id3v2mux has been taught to re-inject those frames again.
See bug #334375.
This commit is contained in:
Tim-Philipp Müller 2006-07-23 10:56:27 +00:00 committed by Tim-Philipp Müller
parent 488a625bb4
commit ba3a9d3b9d
1 changed files with 42 additions and 4 deletions
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46
gst-libs/gst/tag/id3v2.c
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@ -329,11 +329,47 @@ convert_fid_to_v240 (gchar * frame_id)
return FALSE;
}
#define GST_ID3_DEMUX_TAG_ID3V2_FRAME "private-id3v2-frame"
/* add unknown or unhandled ID3v2 frames to the taglist as binary blobs */
static void
id3demux_add_id3v2_frame_blob_to_taglist (ID3TagsWorking * work, guint size)
{
GstBuffer *blob;
GstCaps *caps;
guint8 *frame_data;
gchar *media_type;
guint frame_size;
/* ensure private tag is registered */
gst_tag_register (GST_ID3_DEMUX_TAG_ID3V2_FRAME, GST_TAG_FLAG_META,
GST_TYPE_BUFFER, "ID3v2 frame", "unparsed id3v2 tag frame",
gst_tag_merge_use_first);
frame_data = work->hdr.frame_data - ID3V2_HDR_SIZE;
frame_size = size + ID3V2_HDR_SIZE;
blob = gst_buffer_new_and_alloc (frame_size);
memcpy (GST_BUFFER_DATA (blob), frame_data, frame_size);
media_type = g_strdup_printf ("application/x-gst-id3v2-%c%c%c%c-frame",
g_ascii_tolower (frame_data[0]), g_ascii_tolower (frame_data[1]),
g_ascii_tolower (frame_data[2]), g_ascii_tolower (frame_data[3]));
caps = gst_caps_new_simple (media_type, NULL);
gst_buffer_set_caps (blob, caps);
gst_caps_unref (caps);
g_free (media_type);
gst_tag_list_add (work->tags, GST_TAG_MERGE_APPEND,
GST_ID3_DEMUX_TAG_ID3V2_FRAME, blob, NULL);
gst_buffer_unref (blob);
}
static ID3TagsResult
id3demux_id3v2_frames_to_tag_list (ID3TagsWorking * work, guint size)
{
guint frame_hdr_size;
gboolean read_a_frame = FALSE;
guint8 *start;
/* Extended header if present */
@ -438,16 +474,18 @@ id3demux_id3v2_frames_to_tag_list (ID3TagsWorking * work, guint size)
work->frame_flags = frame_flags;
if (id3demux_id3v2_parse_frame (work)) {
read_a_frame = TRUE;
GST_LOG ("Extracted frame with id %s", frame_id);
} else {
GST_LOG ("Failed to extract frame with id %s", frame_id);
id3demux_add_id3v2_frame_blob_to_taglist (work, frame_size);
}
}
work->hdr.frame_data += frame_size;
work->hdr.frame_data_size -= frame_size;
}
if (!read_a_frame) {
GST_DEBUG ("Could not extract any frames from tag. Broken tag");
if (gst_structure_n_fields (GST_STRUCTURE (work->tags)) == 0) {
GST_DEBUG ("Could not extract any frames from tag. Broken or empty tag");
gst_tag_list_free (work->tags);
work->tags = NULL;
return ID3TAGS_BROKEN_TAG;