mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-24 01:00:37 +00:00
matroska: add chapter support in GstMatroskaReadCommon
This commit is contained in:
Alexander Saprykin
Stefan Sauer
parent
e780771223
commit
890b1752aa
2 changed files with 440 additions and 17 deletions
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@ -56,6 +56,10 @@ GST_DEBUG_CATEGORY (matroskareadcommon_debug);
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GST_DEBUG_OBJECT (common, "Parsing " element " element " \
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" finished with '%s'", gst_flow_get_name (ret))
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#define GST_MATROSKA_TOC_UID_CHAPTER "chapter"
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#define GST_MATROSKA_TOC_UID_EDITION "edition"
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#define GST_MATROSKA_TOC_UID_EMPTY "empty"
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static gboolean
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gst_matroska_decompress_data (GstMatroskaTrackEncoding * enc,
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guint8 ** data_out, guint * size_out,
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@ -694,21 +698,53 @@ gst_matroska_read_common_parse_attachments (GstMatroskaReadCommon * common,
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return ret;
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}
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GstFlowReturn
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gst_matroska_read_common_parse_chapters (GstMatroskaReadCommon * common,
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GstEbmlRead * ebml)
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static void
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gst_matroska_read_common_parse_toc_tag (GstTocEntry * entry,
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GArray * edition_targets, GArray * chapter_targtes, GstTagList * tags)
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{
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gchar *uid;
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guint i;
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guint64 tgt;
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GArray *targets;
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GList *cur;
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targets =
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(entry->type ==
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GST_TOC_ENTRY_TYPE_EDITION) ? edition_targets : chapter_targtes;
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for (i = 0; i < targets->len; ++i) {
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tgt = g_array_index (targets, guint64, i);
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if (tgt == 0)
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gst_tag_list_insert (entry->tags, tags, GST_TAG_MERGE_APPEND);
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else {
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uid = g_strdup_printf ("%" G_GUINT64_FORMAT, tgt);
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if (g_strcmp0 (entry->uid, uid) == 0)
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gst_tag_list_insert (entry->tags, tags, GST_TAG_MERGE_APPEND);
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g_free (uid);
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}
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}
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cur = entry->subentries;
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while (cur != NULL) {
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gst_matroska_read_common_parse_toc_tag (cur->data, edition_targets,
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chapter_targtes, tags);
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cur = cur->next;
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}
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}
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static GstFlowReturn
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gst_matroska_read_common_parse_metadata_targets (GstMatroskaReadCommon * common,
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GstEbmlRead * ebml, GArray * edition_targets, GArray * chapter_targets)
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{
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guint32 id;
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GstFlowReturn ret = GST_FLOW_OK;
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guint32 id;
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guint64 uid;
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GST_WARNING_OBJECT (common, "Parsing of chapters not implemented yet");
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/* TODO: implement parsing of chapters */
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DEBUG_ELEMENT_START (common, ebml, "Chapters");
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DEBUG_ELEMENT_START (common, ebml, "TagTargets");
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if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) {
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DEBUG_ELEMENT_STOP (common, ebml, "Chapters", ret);
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DEBUG_ELEMENT_STOP (common, ebml, "TagTargets", ret);
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return ret;
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}
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@ -717,12 +753,358 @@ gst_matroska_read_common_parse_chapters (GstMatroskaReadCommon * common,
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break;
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switch (id) {
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case GST_MATROSKA_ID_TARGETCHAPTERUID:
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if ((ret = gst_ebml_read_uint (ebml, &id, &uid)) == GST_FLOW_OK)
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g_array_append_val (chapter_targets, uid);
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break;
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case GST_MATROSKA_ID_TARGETEDITIONUID:
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if ((ret = gst_ebml_read_uint (ebml, &id, &uid)) == GST_FLOW_OK)
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g_array_append_val (edition_targets, uid);
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break;
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default:
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ret = gst_ebml_read_skip (ebml);
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ret =
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gst_matroska_read_common_parse_skip (common, ebml, "TagTargets",
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id);
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break;
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}
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}
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DEBUG_ELEMENT_STOP (common, ebml, "TagTargets", ret);
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return ret;
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}
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static void
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gst_matroska_read_common_postprocess_toc_entries (GList * toc_entries,
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guint64 max, const gchar * parent_uid)
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{
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GstTocEntry *cur_info, *prev_info, *next_info;
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GList *cur_list, *prev_list, *next_list;
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gchar *iter_digit;
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gint i = 0;
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gint64 cur_start, prev_start, stop;
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cur_list = toc_entries;
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while (cur_list != NULL) {
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++i;
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cur_info = cur_list->data;
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iter_digit = g_strdup_printf ("%d", i);
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switch (cur_info->type) {
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case GST_TOC_ENTRY_TYPE_EDITION:
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/* in Matroska terms edition has duration of full track */
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gst_toc_entry_set_start_stop (cur_info, 0, max);
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if (cur_info->uid == NULL)
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cur_info->uid =
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g_strconcat (parent_uid, "/", GST_MATROSKA_TOC_UID_EDITION,
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iter_digit, NULL);
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gst_matroska_read_common_postprocess_toc_entries (cur_info->subentries,
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max, cur_info->uid);
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break;
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case GST_TOC_ENTRY_TYPE_CHAPTER:
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prev_list = cur_list->prev;
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next_list = cur_list->next;
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if (prev_list != NULL)
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prev_info = prev_list->data;
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else
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prev_info = NULL;
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if (next_list != NULL)
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next_info = next_list->data;
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else
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next_info = NULL;
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if (cur_info->uid == NULL)
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cur_info->uid =
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g_strconcat (parent_uid, "/", GST_MATROSKA_TOC_UID_CHAPTER,
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iter_digit, NULL);
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/* updated stop time in previous chapter and it's subchapters */
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if (prev_info != NULL) {
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gst_toc_entry_get_start_stop (prev_info, &prev_start, &stop);
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gst_toc_entry_get_start_stop (cur_info, &cur_start, &stop);
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stop = cur_start;
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gst_toc_entry_set_start_stop (prev_info, prev_start, stop);
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gst_matroska_read_common_postprocess_toc_entries
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(prev_info->subentries, cur_start, prev_info->uid);
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}
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/* updated stop time in current chapter and it's subchapters */
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if (next_info == NULL) {
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gst_toc_entry_get_start_stop (cur_info, &cur_start, &stop);
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if (stop == -1) {
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stop = max;
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gst_toc_entry_set_start_stop (cur_info, cur_start, stop);
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}
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gst_matroska_read_common_postprocess_toc_entries
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(cur_info->subentries, stop, cur_info->uid);
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}
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break;
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}
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cur_list = cur_list->next;
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g_free (iter_digit);
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}
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}
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static GstFlowReturn
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gst_matroska_read_common_parse_chapter_titles (GstMatroskaReadCommon * common,
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GstEbmlRead * ebml, GstTagList * titles)
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{
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guint32 id;
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gchar *title = NULL;
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GstFlowReturn ret = GST_FLOW_OK;
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DEBUG_ELEMENT_START (common, ebml, "ChaptersTitles");
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if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) {
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DEBUG_ELEMENT_STOP (common, ebml, "ChaptersTitles", ret);
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return ret;
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}
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while (ret == GST_FLOW_OK && gst_ebml_read_has_remaining (ebml, 1, TRUE)) {
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if ((ret = gst_ebml_peek_id (ebml, &id)) != GST_FLOW_OK)
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break;
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switch (id) {
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case GST_MATROSKA_ID_CHAPSTRING:
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ret = gst_ebml_read_utf8 (ebml, &id, &title);
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break;
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default:
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ret =
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gst_matroska_read_common_parse_skip (common, ebml, "ChaptersTitles",
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id);
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break;
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}
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}
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DEBUG_ELEMENT_STOP (common, ebml, "ChaptersTitles", ret);
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if (title != NULL && ret == GST_FLOW_OK)
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gst_tag_list_add (titles, GST_TAG_MERGE_APPEND, GST_TAG_TITLE, title, NULL);
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g_free (title);
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return ret;
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}
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static GstFlowReturn
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gst_matroska_read_common_parse_chapter_element (GstMatroskaReadCommon * common,
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GstEbmlRead * ebml, GstTocEntry * toc_entry)
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{
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guint32 id;
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guint64 start_time = -1, stop_time = -1;
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guint64 is_hidden = 0, is_enabled = 1, uid = 0;
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GstFlowReturn ret = GST_FLOW_OK;
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GstTocEntry *chapter_info;
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GstTagList *titles;
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DEBUG_ELEMENT_START (common, ebml, "ChaptersElement");
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if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) {
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DEBUG_ELEMENT_STOP (common, ebml, "ChaptersElement", ret);
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return ret;
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}
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titles = gst_tag_list_new ();
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chapter_info = gst_toc_entry_new (GST_TOC_ENTRY_TYPE_CHAPTER,
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GST_MATROSKA_TOC_UID_EMPTY);
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while (ret == GST_FLOW_OK && gst_ebml_read_has_remaining (ebml, 1, TRUE)) {
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if ((ret = gst_ebml_peek_id (ebml, &id)) != GST_FLOW_OK)
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break;
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switch (id) {
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case GST_MATROSKA_ID_CHAPTERUID:
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ret = gst_ebml_read_uint (ebml, &id, &uid);
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break;
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case GST_MATROSKA_ID_CHAPTERTIMESTART:
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ret = gst_ebml_read_uint (ebml, &id, &start_time);
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break;
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case GST_MATROSKA_ID_CHAPTERTIMESTOP:
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ret = gst_ebml_read_uint (ebml, &id, &stop_time);
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break;
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case GST_MATROSKA_ID_CHAPTERATOM:
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ret =
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gst_matroska_read_common_parse_chapter_element (common, ebml,
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chapter_info);
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break;
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case GST_MATROSKA_ID_CHAPTERDISPLAY:
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ret =
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gst_matroska_read_common_parse_chapter_titles (common, ebml,
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titles);
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break;
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case GST_MATROSKA_ID_CHAPTERFLAGHIDDEN:
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ret = gst_ebml_read_uint (ebml, &id, &is_hidden);
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break;
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case GST_MATROSKA_ID_CHAPTERFLAGENABLED:
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ret = gst_ebml_read_uint (ebml, &id, &is_enabled);
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break;
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default:
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ret =
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gst_matroska_read_common_parse_skip (common, ebml,
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"ChaptersElement", id);
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break;
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}
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}
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gst_toc_entry_set_start_stop (chapter_info, start_time, stop_time);
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DEBUG_ELEMENT_STOP (common, ebml, "ChaptersElement", ret);
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g_free (chapter_info->uid);
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if (uid != 0)
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chapter_info->uid = g_strdup_printf ("%" G_GUINT64_FORMAT, uid);
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else
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chapter_info->uid = NULL;
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/* start time is mandatory and has no default value,
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* so we should skip chapters without it */
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if (is_hidden == 0 && is_enabled > 0 &&
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start_time != -1 && ret == GST_FLOW_OK) {
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if (!gst_tag_list_is_empty (titles))
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gst_tag_list_insert (chapter_info->tags, titles, GST_TAG_MERGE_APPEND);
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toc_entry->subentries = g_list_append (toc_entry->subentries, chapter_info);
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} else
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gst_toc_entry_free (chapter_info);
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gst_tag_list_free (titles);
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return ret;
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}
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static GstFlowReturn
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gst_matroska_read_common_parse_chapter_edition (GstMatroskaReadCommon * common,
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GstEbmlRead * ebml, GstToc * toc)
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{
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guint32 id;
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guint64 is_hidden = 0, uid = 0;
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GstFlowReturn ret = GST_FLOW_OK;
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GstTocEntry *edition_info;
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DEBUG_ELEMENT_START (common, ebml, "ChaptersEdition");
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if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) {
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DEBUG_ELEMENT_STOP (common, ebml, "ChaptersEdition", ret);
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return ret;
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}
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edition_info = gst_toc_entry_new (GST_TOC_ENTRY_TYPE_EDITION,
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GST_MATROSKA_TOC_UID_EMPTY);
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gst_toc_entry_set_start_stop (edition_info, -1, -1);
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while (ret == GST_FLOW_OK && gst_ebml_read_has_remaining (ebml, 1, TRUE)) {
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if ((ret = gst_ebml_peek_id (ebml, &id)) != GST_FLOW_OK)
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break;
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switch (id) {
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case GST_MATROSKA_ID_EDITIONUID:
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ret = gst_ebml_read_uint (ebml, &id, &uid);
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break;
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case GST_MATROSKA_ID_CHAPTERATOM:
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ret =
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gst_matroska_read_common_parse_chapter_element (common, ebml,
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edition_info);
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break;
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case GST_MATROSKA_ID_EDITIONFLAGHIDDEN:
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ret = gst_ebml_read_uint (ebml, &id, &is_hidden);
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break;
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default:
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ret =
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gst_matroska_read_common_parse_skip (common, ebml,
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"ChaptersEdition", id);
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break;
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}
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}
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DEBUG_ELEMENT_STOP (common, ebml, "ChaptersEdition", ret);
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g_free (edition_info->uid);
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if (uid != 0)
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edition_info->uid = g_strdup_printf ("%" G_GUINT64_FORMAT, uid);
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else
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edition_info->uid = NULL;
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if (is_hidden == 0 && edition_info->subentries != NULL && ret == GST_FLOW_OK)
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toc->entries = g_list_prepend (toc->entries, edition_info);
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else {
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GST_DEBUG_OBJECT (common,
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"Skipping empty or hidden edition in the chapters TOC");
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gst_toc_entry_free (edition_info);
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}
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return ret;
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}
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GstFlowReturn
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gst_matroska_read_common_parse_chapters (GstMatroskaReadCommon * common,
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GstEbmlRead * ebml)
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{
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guint32 id;
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GstFlowReturn ret = GST_FLOW_OK;
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GstToc *toc;
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DEBUG_ELEMENT_START (common, ebml, "Chapters");
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if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) {
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DEBUG_ELEMENT_STOP (common, ebml, "Chapters", ret);
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return ret;
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}
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toc = gst_toc_new ();
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while (ret == GST_FLOW_OK && gst_ebml_read_has_remaining (ebml, 1, TRUE)) {
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if ((ret = gst_ebml_peek_id (ebml, &id)) != GST_FLOW_OK)
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break;
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switch (id) {
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case GST_MATROSKA_ID_EDITIONENTRY:
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ret =
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gst_matroska_read_common_parse_chapter_edition (common, ebml, toc);
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break;
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default:
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ret =
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gst_matroska_read_common_parse_skip (common, ebml, "Chapters", id);
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break;
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}
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}
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if (toc->entries != NULL) {
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toc->entries = g_list_reverse (toc->entries);
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gst_matroska_read_common_postprocess_toc_entries (toc->entries,
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common->segment.duration, "");
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common->toc = toc;
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} else
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gst_toc_free (toc);
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common->chapters_parsed = TRUE;
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DEBUG_ELEMENT_STOP (common, ebml, "Chapters", ret);
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return ret;
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}
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@ -1470,6 +1852,9 @@ gst_matroska_read_common_parse_metadata_id_tag (GstMatroskaReadCommon * common,
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{
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guint32 id;
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GstFlowReturn ret;
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GArray *chapter_targets, *edition_targets;
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GstTagList *taglist;
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GList *cur;
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DEBUG_ELEMENT_START (common, ebml, "Tag");
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@ -1478,6 +1863,10 @@ gst_matroska_read_common_parse_metadata_id_tag (GstMatroskaReadCommon * common,
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return ret;
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}
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edition_targets = g_array_new (FALSE, FALSE, sizeof (guint64));
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chapter_targets = g_array_new (FALSE, FALSE, sizeof (guint64));
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taglist = gst_tag_list_new ();
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while (ret == GST_FLOW_OK && gst_ebml_read_has_remaining (ebml, 1, TRUE)) {
|
||||
/* read all sub-entries */
|
||||
|
||||
|
|
@ -1487,7 +1876,13 @@ gst_matroska_read_common_parse_metadata_id_tag (GstMatroskaReadCommon * common,
|
|||
switch (id) {
|
||||
case GST_MATROSKA_ID_SIMPLETAG:
|
||||
ret = gst_matroska_read_common_parse_metadata_id_simple_tag (common,
|
||||
ebml, p_taglist);
|
||||
ebml, &taglist);
|
||||
break;
|
||||
|
||||
case GST_MATROSKA_ID_TARGETS:
|
||||
ret =
|
||||
gst_matroska_read_common_parse_metadata_targets (common, ebml,
|
||||
edition_targets, chapter_targets);
|
||||
break;
|
||||
|
||||
default:
|
||||
|
|
@ -1498,6 +1893,27 @@ gst_matroska_read_common_parse_metadata_id_tag (GstMatroskaReadCommon * common,
|
|||
|
||||
DEBUG_ELEMENT_STOP (common, ebml, "Tag", ret);
|
||||
|
||||
/* if tag is chapter/edition specific - try to find that entry */
|
||||
if (G_UNLIKELY (chapter_targets->len > 0 || edition_targets->len > 0)) {
|
||||
if (common->toc == NULL)
|
||||
GST_WARNING_OBJECT (common,
|
||||
"Found chapter/edition specific tag, but TOC doesn't present");
|
||||
else {
|
||||
cur = common->toc->entries;
|
||||
while (cur != NULL) {
|
||||
gst_matroska_read_common_parse_toc_tag (cur->data, edition_targets,
|
||||
chapter_targets, taglist);
|
||||
cur = cur->next;
|
||||
}
|
||||
common->toc_updated = TRUE;
|
||||
}
|
||||
} else
|
||||
gst_tag_list_insert (*p_taglist, taglist, GST_TAG_MERGE_APPEND);
|
||||
|
||||
gst_tag_list_free (taglist);
|
||||
g_array_unref (chapter_targets);
|
||||
g_array_unref (edition_targets);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
|
@ -1537,6 +1953,7 @@ gst_matroska_read_common_parse_metadata (GstMatroskaReadCommon * common,
|
|||
}
|
||||
|
||||
taglist = gst_tag_list_new ();
|
||||
common->toc_updated = FALSE;
|
||||
|
||||
while (ret == GST_FLOW_OK && gst_ebml_read_has_remaining (ebml, 1, TRUE)) {
|
||||
if ((ret = gst_ebml_peek_id (ebml, &id)) != GST_FLOW_OK)
|
||||
|
|
@ -1552,15 +1969,15 @@ gst_matroska_read_common_parse_metadata (GstMatroskaReadCommon * common,
|
|||
ret = gst_matroska_read_common_parse_skip (common, ebml, "Tags", id);
|
||||
break;
|
||||
/* FIXME: Use to limit the tags to specific pads */
|
||||
case GST_MATROSKA_ID_TARGETS:
|
||||
ret = gst_ebml_read_skip (ebml);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
DEBUG_ELEMENT_STOP (common, ebml, "Tags", ret);
|
||||
|
||||
gst_matroska_read_common_found_global_tag (common, el, taglist);
|
||||
if (G_LIKELY (!gst_tag_list_is_empty (taglist)))
|
||||
gst_matroska_read_common_found_global_tag (common, el, taglist);
|
||||
else
|
||||
gst_tag_list_free (taglist);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -59,12 +59,18 @@ typedef struct _GstMatroskaReadCommon {
|
|||
/* state */
|
||||
GstMatroskaReadState state;
|
||||
|
||||
|
||||
/* did we parse cues/tracks/segmentinfo already? */
|
||||
gboolean index_parsed;
|
||||
gboolean segmentinfo_parsed;
|
||||
gboolean attachments_parsed;
|
||||
gboolean chapters_parsed;
|
||||
GList *tags_parsed;
|
||||
|
||||
/* chapters stuff */
|
||||
GstToc *toc;
|
||||
gboolean toc_updated;
|
||||
|
||||
/* start-of-segment */
|
||||
guint64 ebml_segment_start;
|
||||
|
||||
|
|
@ -80,7 +86,7 @@ typedef struct _GstMatroskaReadCommon {
|
|||
GstTagList *global_tags;
|
||||
|
||||
/* pull mode caching */
|
||||
GstBuffer *cached_buffer;
|
||||
GstBuffer *cached_buffer;
|
||||
|
||||
/* push and pull mode */
|
||||
guint64 offset;
|
||||
|
|
|
|||
Loading…
Reference in a new issue