1 /* GStreamer tmplayer format subtitle parser |
1 /* GStreamer tmplayer format subtitle parser |
2 * Copyright (C) 2006-2008 Tim-Philipp Müller <tim centricular net> |
2 * Copyright (C) 2006 Tim-Philipp Müller <tim centricular net> |
3 * |
3 * |
4 * This library is free software; you can redistribute it and/or |
4 * This library is free software; you can redistribute it and/or |
5 * modify it under the terms of the GNU Library General Public |
5 * modify it under the terms of the GNU Library General Public |
6 * License as published by the Free Software Foundation; either |
6 * License as published by the Free Software Foundation; either |
7 * version 2 of the License, or (at your option) any later version. |
7 * version 2 of the License, or (at your option) any later version. |
53 * 00:00:50,1=This is the Earth at a time |
53 * 00:00:50,1=This is the Earth at a time |
54 * 00:00:50,2=when the dinosaurs roamed... |
54 * 00:00:50,2=when the dinosaurs roamed... |
55 * 00:00:53,1= |
55 * 00:00:53,1= |
56 * 00:00:54,1=a lush and fertile planet. |
56 * 00:00:54,1=a lush and fertile planet. |
57 * 00:00:56,1= |
57 * 00:00:56,1= |
58 * |
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59 * -------------------------------------------------------------------------- |
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60 * |
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61 * And another variety (which is 'time-base 0:00:00:' but without empty lines): |
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62 * |
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63 * 00:00:01:This is the Earth at a time|when the dinosaurs roamed... |
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64 * 00:00:03:a lush and fertile planet. |
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65 * 00:00:06:More text here |
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66 * 00:00:12:Yet another line |
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67 * |
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68 */ |
58 */ |
69 |
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70 static gchar * |
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71 tmplayer_process_buffer (ParserState * state) |
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72 { |
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73 gchar *ret; |
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74 |
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75 ret = g_strndup (state->buf->str, state->buf->len); |
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76 g_strdelimit (ret, "|", '\n'); |
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77 g_string_truncate (state->buf, 0); |
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78 return ret; |
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79 } |
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80 |
59 |
81 static gchar * |
60 static gchar * |
82 tmplayer_parse_line (ParserState * state, const gchar * line, guint line_num) |
61 tmplayer_parse_line (ParserState * state, const gchar * line, guint line_num) |
83 { |
62 { |
84 GstClockTime ts = GST_CLOCK_TIME_NONE; |
63 GstClockTime ts = GST_CLOCK_TIME_NONE; |
97 } else if (sscanf (line, "%u:%02u:%02u%c", &h, &m, &s, &divc) == 4 && |
76 } else if (sscanf (line, "%u:%02u:%02u%c", &h, &m, &s, &divc) == 4 && |
98 (divc == '=' || divc == ':')) { |
77 (divc == '=' || divc == ':')) { |
99 GST_LOG ("single line format %u %u %u %u %c", h, m, s, l, divc); |
78 GST_LOG ("single line format %u %u %u %u %c", h, m, s, l, divc); |
100 ts = GST_SECOND * ((((h * 60) + m) * 60) + s); |
79 ts = GST_SECOND * ((((h * 60) + m) * 60) + s); |
101 text_start = strchr (line + 6, divc); |
80 text_start = strchr (line + 6, divc); |
102 } else if (line[0] == '\0' && state->buf->len > 0 && |
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103 GST_CLOCK_TIME_IS_VALID (state->start_time)) { |
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104 /* if we get an empty line (could be the end of the file, but doesn't have |
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105 * to be), just push whatever is still in the buffer without a duration */ |
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106 GST_LOG ("empty line, and there's still text in the buffer"); |
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107 ret = tmplayer_process_buffer (state); |
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108 state->duration = GST_CLOCK_TIME_NONE; |
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109 return ret; |
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110 } else { |
81 } else { |
111 GST_WARNING ("failed to parse line: '%s'", line); |
82 GST_WARNING ("failed to parse line: '%s'", line); |
112 return NULL; |
83 return NULL; |
113 } |
84 } |
114 |
85 |
115 /* if this is a line without text, or the first line in a multiline file, |
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116 * process and return the data in the buffer, which is the previous line(s) */ |
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117 if (text_start == NULL || text_start[1] == '\0' || |
86 if (text_start == NULL || text_start[1] == '\0' || |
118 (l == 1 && state->buf->len > 0)) { |
87 (l == 1 && state->buf->len > 0)) { |
119 |
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120 if (GST_CLOCK_TIME_IS_VALID (state->start_time) && |
88 if (GST_CLOCK_TIME_IS_VALID (state->start_time) && |
121 state->start_time < ts && line_num > 0) { |
89 state->start_time < ts && line_num > 0) { |
122 ret = tmplayer_process_buffer (state); |
90 ret = g_strndup (state->buf->str, state->buf->len); |
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91 g_strdelimit (ret, "|", '\n'); |
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92 g_string_truncate (state->buf, 0); |
123 state->duration = ts - state->start_time; |
93 state->duration = ts - state->start_time; |
124 /* ..and append current line's text (if there is any) for the next round. |
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125 * We don't have to store ts as pending_start_time, since we deduce the |
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126 * durations from the start times anyway, so as long as the parser just |
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127 * forwards state->start_time by duration after it pushes the line we |
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128 * are about to return it will all be good. */ |
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129 g_string_append (state->buf, text_start + 1); |
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130 } else if (line_num > 0) { |
94 } else if (line_num > 0) { |
131 GST_WARNING ("end of subtitle unit but no valid start time?!"); |
95 GST_WARNING ("end of subtitle unit but no valid start time?!"); |
132 } |
96 } |
133 } else { |
97 } else { |
134 if (l > 1) |
98 if (l > 1) |
135 g_string_append_c (state->buf, '\n'); |
99 g_string_append_c (state->buf, '\n'); |
136 g_string_append (state->buf, text_start + 1); |
100 g_string_append (state->buf, text_start + 1); |
137 state->start_time = ts; |
101 state->start_time = ts; |
138 } |
102 } |
139 |
103 |
140 GST_LOG ("returning: '%s'", GST_STR_NULL (ret)); |
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141 return ret; |
104 return ret; |
142 } |
105 } |
143 #ifdef __SYMBIAN32__ |
106 #ifdef __SYMBIAN32__ |
144 EXPORT_C |
107 EXPORT_C |
145 #endif |
108 #endif |