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avidemux: Parse and post IDIT dates
Parses and post date tags contained in IDIT chunks. Fixes #503582
This commit is contained in:
Thiago Santos
parent
a9a5e0c7e1
commit
a5197a94ee
1 changed files with 208 additions and 4 deletions
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@ -45,6 +45,7 @@
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#endif
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#include <string.h>
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#include <ctype.h>
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#include "gst/riff/riff-media.h"
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#include "gstavidemux.h"
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@ -104,6 +105,8 @@ static GstIndex *gst_avi_demux_get_index (GstElement * element);
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static GstStateChangeReturn gst_avi_demux_change_state (GstElement * element,
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GstStateChange transition);
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static void gst_avi_demux_parse_idit (GstAviDemux * avi, GstBuffer * buf);
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static GstElementClass *parent_class = NULL;
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/* GObject methods */
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@ -2817,6 +2820,7 @@ gst_avi_demux_stream_header_push (GstAviDemux * avi)
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guint offset = 4;
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gint64 stop;
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gint i;
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GstTagList *tags = NULL;
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GST_DEBUG ("Reading and parsing avi headers: %d", avi->header_state);
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@ -2889,6 +2893,9 @@ gst_avi_demux_stream_header_push (GstAviDemux * avi)
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goto next;
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}
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break;
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case GST_RIFF_IDIT:
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gst_avi_demux_parse_idit (avi, sub);
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goto next;
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default:
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GST_WARNING_OBJECT (avi,
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"Unknown off %d tag %" GST_FOURCC_FORMAT " in AVI header",
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@ -2949,8 +2956,16 @@ gst_avi_demux_stream_header_push (GstAviDemux * avi)
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/* mind padding */
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if (size & 1)
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gst_adapter_flush (avi->adapter, 1);
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gst_riff_parse_info (GST_ELEMENT (avi), buf,
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&avi->globaltags);
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gst_riff_parse_info (GST_ELEMENT (avi), buf, &tags);
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if (tags) {
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if (avi->globaltags) {
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gst_tag_list_insert (avi->globaltags, tags,
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GST_TAG_MERGE_REPLACE);
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} else {
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avi->globaltags = tags;
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}
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}
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tags = NULL;
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gst_buffer_unref (buf);
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avi->offset += GST_ROUND_UP_2 (size) - 4;
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@ -3066,6 +3081,173 @@ header_wrong_avih:
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}
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}
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static void
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gst_avi_demux_add_date_tag (GstAviDemux * avi, gint y, gint m, gint d)
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{
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GDate *date;
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date = g_date_new_dmy (d, m, y);
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if (!g_date_valid (date)) {
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/* bogus date */
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GST_WARNING_OBJECT (avi, "Refusing to add invalid date %d-%d-%d", y, m, d);
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g_date_free (date);
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return;
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}
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if (avi->globaltags == NULL)
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avi->globaltags = gst_tag_list_new ();
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gst_tag_list_add (avi->globaltags, GST_TAG_MERGE_REPLACE, GST_TAG_DATE, date,
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NULL);
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g_date_free (date);
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}
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#define SKIP_TOKEN(data,size,label) \
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while (size > 0 && !isspace (data[0])) { \
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data++; \
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size--; \
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} \
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while (size > 0 && isspace (data[0])) { \
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data++; \
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size--; \
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} \
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if (size == 0) \
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goto label;
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#define SKIP_DIGIT(data,size,label) \
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while (size > 0 && isdigit (data[0])) { \
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data++; \
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size--; \
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} \
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while (size > 0 && !isdigit (data[0])) { \
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data++; \
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size--; \
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} \
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if (size == 0) \
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goto label;
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static void
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gst_avi_demux_parse_idit_nums_only (GstAviDemux * avi, gchar * data, guint size)
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{
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gint y, m, d;
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/* parse the year */
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y = atoi (data);
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SKIP_DIGIT (data, size, parse_fail);
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/* parse the month */
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m = atoi (data);
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SKIP_DIGIT (data, size, parse_fail);
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/* parse the day */
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d = atoi (data);
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gst_avi_demux_add_date_tag (avi, y, m, d);
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return;
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parse_fail:
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GST_WARNING_OBJECT (avi, "Failed to parse IDIT tag");
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}
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static gint
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get_month_num (gchar * data, guint size)
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{
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if (strncasecmp (data, "jan", 3) == 0) {
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return 1;
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} else if (strncasecmp (data, "fev", 3) == 0) {
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return 2;
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} else if (strncasecmp (data, "mar", 3) == 0) {
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return 3;
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} else if (strncasecmp (data, "apr", 3) == 0) {
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return 4;
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} else if (strncasecmp (data, "may", 3) == 0) {
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return 5;
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} else if (strncasecmp (data, "jun", 3) == 0) {
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return 6;
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} else if (strncasecmp (data, "jul", 3) == 0) {
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return 7;
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} else if (strncasecmp (data, "aug", 3) == 0) {
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return 8;
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} else if (strncasecmp (data, "sep", 3) == 0) {
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return 9;
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} else if (strncasecmp (data, "oct", 3) == 0) {
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return 10;
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} else if (strncasecmp (data, "nov", 3) == 0) {
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return 11;
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} else if (strncasecmp (data, "dec", 3) == 0) {
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return 12;
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}
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return 0;
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}
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static void
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gst_avi_demux_parse_idit_text (GstAviDemux * avi, gchar * data, guint size)
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{
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gint y, m, d;
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/* skip the week day */
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SKIP_TOKEN (data, size, parse_fail);
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/* get the month */
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m = get_month_num (data, size);
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SKIP_TOKEN (data, size, parse_fail);
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d = atoi (data);
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SKIP_TOKEN (data, size, parse_fail);
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/* skip the hour */
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SKIP_TOKEN (data, size, parse_fail);
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y = atoi (data);
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gst_avi_demux_add_date_tag (avi, y, m, d);
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return;
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parse_fail:
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GST_WARNING_OBJECT (avi, "Failed to parse IDIT tag");
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}
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static void
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gst_avi_demux_parse_idit (GstAviDemux * avi, GstBuffer * buf)
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{
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gchar *data = (gchar *) GST_BUFFER_DATA (buf);
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guint size = GST_BUFFER_SIZE (buf);
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/*
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* According to:
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* http://www.eden-foundation.org/products/code/film_date_stamp/index.html
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*
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* This tag could be in one of the below formats
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* 2005:08:17 11:42:43
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* THU OCT 26 16:46:04 2006
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* Mon Mar 3 09:44:56 2008
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*
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* FIXME: Our date tag doesn't include hours
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*/
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/* skip eventual initial whitespace */
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while (size > 0 && isspace (data[0])) {
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data++;
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size--;
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}
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if (size == 0) {
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goto non_parsable;
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}
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/* test if the first char is a alpha or a number */
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if (isdigit (data[0])) {
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gst_avi_demux_parse_idit_nums_only (avi, data, size);
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return;
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} else if (isalpha (data[0])) {
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gst_avi_demux_parse_idit_text (avi, data, size);
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return;
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}
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non_parsable:
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GST_WARNING_OBJECT (avi, "IDIT tag has no parsable info");
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}
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/*
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* Read full AVI headers.
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*/
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@ -3079,6 +3261,7 @@ gst_avi_demux_stream_header_pull (GstAviDemux * avi)
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gint64 stop;
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GstElement *element = GST_ELEMENT_CAST (avi);
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GstClockTime stamp;
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GstTagList *tags = NULL;
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stamp = gst_util_get_timestamp ();
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@ -3157,7 +3340,16 @@ gst_avi_demux_stream_header_pull (GstAviDemux * avi)
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case GST_RIFF_LIST_INFO:
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GST_BUFFER_DATA (sub) = data + 4;
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GST_BUFFER_SIZE (sub) -= 4;
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gst_riff_parse_info (element, sub, &avi->globaltags);
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gst_riff_parse_info (element, sub, &tags);
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if (tags) {
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if (avi->globaltags) {
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gst_tag_list_insert (avi->globaltags, tags,
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GST_TAG_MERGE_REPLACE);
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} else {
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avi->globaltags = tags;
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}
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}
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tags = NULL;
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break;
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default:
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GST_WARNING_OBJECT (avi,
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@ -3171,6 +3363,9 @@ gst_avi_demux_stream_header_pull (GstAviDemux * avi)
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}
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break;
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}
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case GST_RIFF_IDIT:
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gst_avi_demux_parse_idit (avi, sub);
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goto next;
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default:
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GST_WARNING_OBJECT (avi,
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"Unknown tag %" GST_FOURCC_FORMAT " in AVI header at off %d",
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@ -3253,7 +3448,16 @@ gst_avi_demux_stream_header_pull (GstAviDemux * avi)
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}
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sub = gst_buffer_create_sub (buf, 4, GST_BUFFER_SIZE (buf) - 4);
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gst_riff_parse_info (element, sub, &avi->globaltags);
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gst_riff_parse_info (element, sub, &tags);
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if (tags) {
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if (avi->globaltags) {
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gst_tag_list_insert (avi->globaltags, tags,
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GST_TAG_MERGE_REPLACE);
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} else {
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avi->globaltags = tags;
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}
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}
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tags = NULL;
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if (sub) {
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gst_buffer_unref (sub);
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sub = NULL;
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