From 9ee9f721d85c1dd4df071034b6cef3ea1eb768a0 Mon Sep 17 00:00:00 2001 From: j-b-m Date: Tue, 23 Jan 2007 23:20:50 +0000 Subject: [PATCH] Allow display of metadata and timecode git-svn-id: https://mlt.svn.sourceforge.net/svnroot/mlt/trunk/mlt@948 d19143bc-622f-0410-bfdd-b5b2a6649095 --- src/modules/core/filter_data_show.c | 63 +++++++++++++++++++++++++++++++++- 1 files changed, 61 insertions(+), 2 deletions(-) diff --git a/src/modules/core/filter_data_show.c b/src/modules/core/filter_data_show.c index fc9fb3e..b8fcd4c 100644 --- a/src/modules/core/filter_data_show.c +++ b/src/modules/core/filter_data_show.c @@ -83,6 +83,34 @@ static mlt_filter obtain_filter( mlt_filter filter, char *type ) return result; } +/** Retrieve medatata value +*/ + +const char* metadata_value(mlt_properties properties, char* name) +{ + if (name == NULL) return "-"; + char *meta = malloc( strlen(name) + 18 ); + sprintf( meta, "meta.attr.%s.markup", name); + return mlt_properties_get( properties, meta); +} + +/** Convert frames to Timecode +*/ + +const char* frame_to_timecode( int frames , int fps) +{ + char *res = malloc(12); + if (fps == 0) return "-"; + int seconds = frames / (int) fps; + frames = frames % ((int) fps); + int minutes = seconds / 60; + seconds = seconds % 60; + int hours = minutes / 60; + minutes = minutes % 60; + sprintf(res, "%.2d:%.2d:%.2d:%.2d", hours, minutes, seconds, frames); + return res; +} + /** Process the frame for the requested type */ @@ -144,8 +172,39 @@ static int process_feed( mlt_properties feed, mlt_filter filter, mlt_frame frame else { char *value = mlt_properties_get( feed, name + len ); - if ( value != NULL ) - mlt_properties_set( properties, key, value ); + if ( value != NULL ) { + // check for metadata keywords in metadata markup if user requested so + if ( mlt_properties_get_int( filter_properties, "dynamic" ) == 1 && !strcmp( name + strlen( name ) - 6, "markup") ) + { + // Find keywords which should be surrounded by '#', like: #title# + char* keywords = strtok ( value, "\\#" ); + char result[] = ""; + int ct = 0; + int fromStart = 0; + if ( value[0] == '\\' ) fromStart = 1; + + while (keywords != NULL) { + if (ct % 2 == fromStart) + strcat( result, keywords); + else if (!strcmp(keywords, "timecode")) { + // special case: replace #tc# with current frame timecode + int pos = mlt_properties_get_int( feed, "position" ); + const char *tc = frame_to_timecode(pos, mlt_properties_get_int( MLT_FRAME_PROPERTIES( frame ), "fps" )); + strcat( result, tc); + } + else { + // replace keyword with metadata value + const char * metavalue = metadata_value(MLT_FRAME_PROPERTIES( frame ), keywords); + if (metavalue == NULL) metavalue = "-"; + strcat( result, metavalue); + } + keywords = strtok ( NULL, "\\#" ); + ct++; + } + mlt_properties_set( properties, key, (char*) result ); + } + else mlt_properties_set( properties, key, value ); + } } } } -- 1.7.4.4