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-rw-r--r--gst/subparse/tmplayerparse.c156
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diff --git a/gst/subparse/tmplayerparse.c b/gst/subparse/tmplayerparse.c
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-/* GStreamer tmplayer format subtitle parser
- * Copyright (C) 2006-2008 Tim-Philipp Müller <tim centricular net>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
-#include "tmplayerparse.h"
-
-#include <stdio.h>
-#include <string.h>
-
-/* From http://forum.doom9.org/archive/index.php/t-81059.html:
- *
- * TMPlayer format, which comes in five varieties:
- *
- * time-base 00:00:00:
- * 00:00:50:This is the Earth at a time|when the dinosaurs roamed...
- * 00:00:53:
- * 00:00:54:a lush and fertile planet.
- * 00:00:56:
- *
- * time-base 0:00:00:
- * 0:00:50:This is the Earth at a time|when the dinosaurs roamed...
- * 0:00:53:
- * 0:00:54:a lush and fertile planet.
- * 0:00:56:
- *
- * time-base 00:00:00=
- * 00:00:50=This is the Earth at a time|when the dinosaurs roamed...
- * 00:00:53=
- * 00:00:54=a lush and fertile planet.
- * 00:00:56=
- *
- * time-base 0:00:00=
- * 0:00:50=This is the Earth at a time|when the dinosaurs roamed...
- * 0:00:53=
- * 0:00:54=a lush and fertile planet.
- * 0:00:56=
- *
- * and multiline time-base 00:00:00,1=
- * 00:00:50,1=This is the Earth at a time
- * 00:00:50,2=when the dinosaurs roamed...
- * 00:00:53,1=
- * 00:00:54,1=a lush and fertile planet.
- * 00:00:56,1=
- *
- * --------------------------------------------------------------------------
- *
- * And another variety (which is 'time-base 0:00:00:' but without empty lines):
- *
- * 00:00:01:This is the Earth at a time|when the dinosaurs roamed...
- * 00:00:03:a lush and fertile planet.
- * 00:00:06:More text here
- * 00:00:12:Yet another line
- *
- */
-
-static gchar *
-tmplayer_process_buffer (ParserState * state)
-{
- gchar *ret;
-
- ret = g_strndup (state->buf->str, state->buf->len);
- g_strdelimit (ret, "|", '\n');
- g_string_truncate (state->buf, 0);
- return ret;
-}
-
-static gchar *
-tmplayer_parse_line (ParserState * state, const gchar * line, guint line_num)
-{
- GstClockTime ts = GST_CLOCK_TIME_NONE;
- const gchar *text_start = NULL;
- gboolean multiline = FALSE;
- gchar *ret = NULL;
- gchar divc = '\0';
- guint h, m, s, l = 1;
-
- if (sscanf (line, "%u:%02u:%02u,%u%c", &h, &m, &s, &l, &divc) == 5 &&
- (divc == '=')) {
- GST_LOG ("multiline format %u %u %u %u", h, m, s, l);
- ts = GST_SECOND * ((((h * 60) + m) * 60) + s);
- text_start = strchr (line, '=');
- multiline = TRUE;
- } else if (sscanf (line, "%u:%02u:%02u%c", &h, &m, &s, &divc) == 4 &&
- (divc == '=' || divc == ':')) {
- GST_LOG ("single line format %u %u %u %u %c", h, m, s, l, divc);
- ts = GST_SECOND * ((((h * 60) + m) * 60) + s);
- text_start = strchr (line + 6, divc);
- } else if (line[0] == '\0' && state->buf->len > 0 &&
- GST_CLOCK_TIME_IS_VALID (state->start_time)) {
- /* if we get an empty line (could be the end of the file, but doesn't have
- * to be), just push whatever is still in the buffer without a duration */
- GST_LOG ("empty line, and there's still text in the buffer");
- ret = tmplayer_process_buffer (state);
- state->duration = GST_CLOCK_TIME_NONE;
- return ret;
- } else {
- GST_WARNING ("failed to parse line: '%s'", line);
- return NULL;
- }
-
- /* if this is a line without text, or the first line in a multiline file,
- * process and return the data in the buffer, which is the previous line(s) */
- if (text_start == NULL || text_start[1] == '\0' ||
- (l == 1 && state->buf->len > 0)) {
-
- if (GST_CLOCK_TIME_IS_VALID (state->start_time) &&
- state->start_time < ts && line_num > 0) {
- ret = tmplayer_process_buffer (state);
- state->duration = ts - state->start_time;
- /* ..and append current line's text (if there is any) for the next round.
- * We don't have to store ts as pending_start_time, since we deduce the
- * durations from the start times anyway, so as long as the parser just
- * forwards state->start_time by duration after it pushes the line we
- * are about to return it will all be good. */
- g_string_append (state->buf, text_start + 1);
- } else if (line_num > 0) {
- GST_WARNING ("end of subtitle unit but no valid start time?!");
- }
- } else {
- if (l > 1)
- g_string_append_c (state->buf, '\n');
- g_string_append (state->buf, text_start + 1);
- state->start_time = ts;
- }
-
- GST_LOG ("returning: '%s'", GST_STR_NULL (ret));
- return ret;
-}
-
-gchar *
-parse_tmplayer (ParserState * state, const gchar * line)
-{
- gchar *ret;
-
- /* GST_LOG ("Parsing: %s", line); */
-
- ret = tmplayer_parse_line (state, line, state->state);
- ++state->state;
-
- return ret;
-}