... | ... |
@@ -184,4 +184,35 @@ the script is directly played, the actual times will match the absolute |
184 | 184 |
timestamps up to the sound controller's clock accuracy, but if the user |
185 | 185 |
somehow pauses the playback or seeks, all times will be shifted accordingly. |
186 | 186 |
|
187 |
+@section concat |
|
188 |
+ |
|
189 |
+Virtual concatenation script demuxer. |
|
190 |
+ |
|
191 |
+This demuxer reads a list of files and other directives from a text file and |
|
192 |
+demuxes them one after the other, as if all their packet had been muxed |
|
193 |
+together. |
|
194 |
+ |
|
195 |
+The timestamps in the files are adjusted so that the first file starts at 0 |
|
196 |
+and each next file starts where the previous one finishes. Note that it is |
|
197 |
+done globally and may cause gaps if all streams do not have exactly the same |
|
198 |
+length. |
|
199 |
+ |
|
200 |
+All files must have the same streams (same codecs, same time base, etc.). |
|
201 |
+ |
|
202 |
+This script format can currently not be probed, it must be specified explicitly. |
|
203 |
+ |
|
204 |
+@subsection Syntax |
|
205 |
+ |
|
206 |
+The script is a text file in extended-ASCII, with one directive per line. |
|
207 |
+Empty lines, leading spaces and lines starting with '#' are ignored. The |
|
208 |
+following directive is recognized: |
|
209 |
+ |
|
210 |
+@table @option |
|
211 |
+ |
|
212 |
+@item @code{file @var{path}} |
|
213 |
+Path to a file to read; special characters and spaces must be escaped with |
|
214 |
+backslash or single quotes. |
|
215 |
+ |
|
216 |
+@end table |
|
217 |
+ |
|
187 | 218 |
@c man end INPUT DEVICES |
... | ... |
@@ -96,6 +96,7 @@ OBJS-$(CONFIG_CAVSVIDEO_DEMUXER) += cavsvideodec.o rawdec.o |
96 | 96 |
OBJS-$(CONFIG_CAVSVIDEO_MUXER) += rawenc.o |
97 | 97 |
OBJS-$(CONFIG_CDG_DEMUXER) += cdg.o |
98 | 98 |
OBJS-$(CONFIG_CDXL_DEMUXER) += cdxl.o |
99 |
+OBJS-$(CONFIG_CONCAT_DEMUXER) += concatdec.o |
|
99 | 100 |
OBJS-$(CONFIG_CRC_MUXER) += crcenc.o |
100 | 101 |
OBJS-$(CONFIG_DAUD_DEMUXER) += daud.o |
101 | 102 |
OBJS-$(CONFIG_DAUD_MUXER) += daud.o |
... | ... |
@@ -85,6 +85,7 @@ void av_register_all(void) |
85 | 85 |
REGISTER_MUXDEMUX (CAVSVIDEO, cavsvideo); |
86 | 86 |
REGISTER_DEMUXER (CDG, cdg); |
87 | 87 |
REGISTER_DEMUXER (CDXL, cdxl); |
88 |
+ REGISTER_DEMUXER (CONCAT, concat); |
|
88 | 89 |
REGISTER_MUXER (CRC, crc); |
89 | 90 |
REGISTER_MUXDEMUX (DAUD, daud); |
90 | 91 |
REGISTER_DEMUXER (DFA, dfa); |
91 | 92 |
new file mode 100644 |
... | ... |
@@ -0,0 +1,221 @@ |
0 |
+/* |
|
1 |
+ * Copyright (c) 2012 Nicolas George |
|
2 |
+ * |
|
3 |
+ * This file is part of FFmpeg. |
|
4 |
+ * |
|
5 |
+ * FFmpeg is free software; you can redistribute it and/or |
|
6 |
+ * modify it under the terms of the GNU Lesser General Public License |
|
7 |
+ * as published by the Free Software Foundation; either |
|
8 |
+ * version 2.1 of the License, or (at your option) any later version. |
|
9 |
+ * |
|
10 |
+ * FFmpeg is distributed in the hope that it will be useful, |
|
11 |
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
12 |
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|
13 |
+ * GNU Lesser General Public License for more details. |
|
14 |
+ * |
|
15 |
+ * You should have received a copy of the GNU Lesser General Public License |
|
16 |
+ * along with FFmpeg; if not, write to the Free Software Foundation, Inc., |
|
17 |
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
|
18 |
+ */ |
|
19 |
+ |
|
20 |
+#include "libavutil/avstring.h" |
|
21 |
+#include "avformat.h" |
|
22 |
+#include "internal.h" |
|
23 |
+ |
|
24 |
+typedef struct { |
|
25 |
+ char *url; |
|
26 |
+ int64_t start_time; |
|
27 |
+ int64_t duration; |
|
28 |
+} ConcatFile; |
|
29 |
+ |
|
30 |
+typedef struct { |
|
31 |
+ ConcatFile *files; |
|
32 |
+ ConcatFile *cur_file; |
|
33 |
+ unsigned nb_files; |
|
34 |
+ AVFormatContext *avf; |
|
35 |
+} ConcatContext; |
|
36 |
+ |
|
37 |
+static int concat_probe(AVProbeData *probe) |
|
38 |
+{ |
|
39 |
+ return 0; |
|
40 |
+} |
|
41 |
+ |
|
42 |
+static char *get_keyword(uint8_t **cursor) |
|
43 |
+{ |
|
44 |
+ char *ret = *cursor += strspn(*cursor, SPACE_CHARS); |
|
45 |
+ *cursor += strcspn(*cursor, SPACE_CHARS); |
|
46 |
+ if (**cursor) { |
|
47 |
+ *((*cursor)++) = 0; |
|
48 |
+ *cursor += strspn(*cursor, SPACE_CHARS); |
|
49 |
+ } |
|
50 |
+ return ret; |
|
51 |
+} |
|
52 |
+ |
|
53 |
+#define FAIL(retcode) do { ret = (retcode); goto fail; } while(0) |
|
54 |
+ |
|
55 |
+static int add_file(AVFormatContext *avf, char *filename, ConcatFile **rfile, |
|
56 |
+ unsigned *nb_files_alloc) |
|
57 |
+{ |
|
58 |
+ ConcatContext *cat = avf->priv_data; |
|
59 |
+ ConcatFile *file; |
|
60 |
+ char *url; |
|
61 |
+ size_t url_len; |
|
62 |
+ |
|
63 |
+ url_len = strlen(avf->filename) + strlen(filename) + 16; |
|
64 |
+ if (!(url = av_malloc(url_len))) |
|
65 |
+ return AVERROR(ENOMEM); |
|
66 |
+ ff_make_absolute_url(url, url_len, avf->filename, filename); |
|
67 |
+ av_free(filename); |
|
68 |
+ |
|
69 |
+ if (cat->nb_files >= *nb_files_alloc) { |
|
70 |
+ unsigned n = FFMAX(*nb_files_alloc * 2, 16); |
|
71 |
+ if (n <= cat->nb_files || |
|
72 |
+ !(cat->files = av_realloc_f(cat->files, n, sizeof(*cat->files)))) |
|
73 |
+ return AVERROR(ENOMEM); |
|
74 |
+ *nb_files_alloc = n; |
|
75 |
+ } |
|
76 |
+ |
|
77 |
+ file = &cat->files[cat->nb_files++]; |
|
78 |
+ memset(file, 0, sizeof(*file)); |
|
79 |
+ *rfile = file; |
|
80 |
+ |
|
81 |
+ file->url = url; |
|
82 |
+ file->start_time = AV_NOPTS_VALUE; |
|
83 |
+ file->duration = AV_NOPTS_VALUE; |
|
84 |
+ |
|
85 |
+ return 0; |
|
86 |
+} |
|
87 |
+ |
|
88 |
+static int open_file(AVFormatContext *avf, unsigned fileno) |
|
89 |
+{ |
|
90 |
+ ConcatContext *cat = avf->priv_data; |
|
91 |
+ ConcatFile *file = &cat->files[fileno]; |
|
92 |
+ int ret; |
|
93 |
+ |
|
94 |
+ if ((ret = avformat_open_input(&cat->avf, file->url, NULL, NULL)) < 0 || |
|
95 |
+ (ret = avformat_find_stream_info(cat->avf, NULL)) < 0) { |
|
96 |
+ av_log(avf, AV_LOG_ERROR, "Impossible to open '%s'\n", file->url); |
|
97 |
+ return ret; |
|
98 |
+ } |
|
99 |
+ cat->cur_file = file; |
|
100 |
+ if (file->start_time == AV_NOPTS_VALUE) |
|
101 |
+ file->start_time = !fileno ? 0 : |
|
102 |
+ cat->files[fileno - 1].start_time + |
|
103 |
+ cat->files[fileno - 1].duration; |
|
104 |
+ return 0; |
|
105 |
+} |
|
106 |
+ |
|
107 |
+static int concat_read_close(AVFormatContext *avf) |
|
108 |
+{ |
|
109 |
+ ConcatContext *cat = avf->priv_data; |
|
110 |
+ unsigned i; |
|
111 |
+ |
|
112 |
+ if (cat->avf) |
|
113 |
+ avformat_close_input(&cat->avf); |
|
114 |
+ for (i = 0; i < cat->nb_files; i++) |
|
115 |
+ av_freep(&cat->files[i].url); |
|
116 |
+ av_freep(&cat->files); |
|
117 |
+ return 0; |
|
118 |
+} |
|
119 |
+ |
|
120 |
+static int concat_read_header(AVFormatContext *avf) |
|
121 |
+{ |
|
122 |
+ ConcatContext *cat = avf->priv_data; |
|
123 |
+ uint8_t buf[4096]; |
|
124 |
+ uint8_t *cursor, *keyword; |
|
125 |
+ int ret, line = 0, i; |
|
126 |
+ unsigned nb_files_alloc = 0; |
|
127 |
+ ConcatFile *file = NULL; |
|
128 |
+ AVStream *st, *source_st; |
|
129 |
+ |
|
130 |
+ while (1) { |
|
131 |
+ if ((ret = ff_get_line(avf->pb, buf, sizeof(buf))) <= 0) |
|
132 |
+ break; |
|
133 |
+ line++; |
|
134 |
+ cursor = buf; |
|
135 |
+ keyword = get_keyword(&cursor); |
|
136 |
+ if (!*keyword || *keyword == '#') |
|
137 |
+ continue; |
|
138 |
+ |
|
139 |
+ if (!strcmp(keyword, "file")) { |
|
140 |
+ char *filename = av_get_token((const char **)&cursor, SPACE_CHARS); |
|
141 |
+ if (!filename) { |
|
142 |
+ av_log(avf, AV_LOG_ERROR, "Line %d: filename required\n", line); |
|
143 |
+ FAIL(AVERROR_INVALIDDATA); |
|
144 |
+ } |
|
145 |
+ if ((ret = add_file(avf, filename, &file, &nb_files_alloc)) < 0) |
|
146 |
+ FAIL(ret); |
|
147 |
+ } else { |
|
148 |
+ av_log(avf, AV_LOG_ERROR, "Line %d: unknown keyword '%s'\n", |
|
149 |
+ line, keyword); |
|
150 |
+ FAIL(AVERROR_INVALIDDATA); |
|
151 |
+ } |
|
152 |
+ } |
|
153 |
+ if (ret < 0) |
|
154 |
+ FAIL(ret); |
|
155 |
+ |
|
156 |
+ if ((ret = open_file(avf, 0)) < 0) |
|
157 |
+ FAIL(ret); |
|
158 |
+ for (i = 0; i < cat->avf->nb_streams; i++) { |
|
159 |
+ if (!(st = avformat_new_stream(avf, NULL))) |
|
160 |
+ FAIL(AVERROR(ENOMEM)); |
|
161 |
+ source_st = cat->avf->streams[i]; |
|
162 |
+ if ((ret = avcodec_copy_context(st->codec, source_st->codec)) < 0) |
|
163 |
+ FAIL(ret); |
|
164 |
+ st->r_frame_rate = source_st->r_frame_rate; |
|
165 |
+ st->avg_frame_rate = source_st->avg_frame_rate; |
|
166 |
+ st->time_base = source_st->time_base; |
|
167 |
+ st->sample_aspect_ratio = source_st->sample_aspect_ratio; |
|
168 |
+ } |
|
169 |
+ |
|
170 |
+ return 0; |
|
171 |
+ |
|
172 |
+fail: |
|
173 |
+ concat_read_close(avf); |
|
174 |
+ return ret; |
|
175 |
+} |
|
176 |
+ |
|
177 |
+static int open_next_file(AVFormatContext *avf) |
|
178 |
+{ |
|
179 |
+ ConcatContext *cat = avf->priv_data; |
|
180 |
+ unsigned fileno = cat->cur_file - cat->files; |
|
181 |
+ |
|
182 |
+ if (cat->cur_file->duration == AV_NOPTS_VALUE) |
|
183 |
+ cat->cur_file->duration = cat->avf->duration; |
|
184 |
+ |
|
185 |
+ if (++fileno >= cat->nb_files) |
|
186 |
+ return AVERROR_EOF; |
|
187 |
+ avformat_close_input(&cat->avf); |
|
188 |
+ return open_file(avf, fileno); |
|
189 |
+} |
|
190 |
+ |
|
191 |
+static int concat_read_packet(AVFormatContext *avf, AVPacket *pkt) |
|
192 |
+{ |
|
193 |
+ ConcatContext *cat = avf->priv_data; |
|
194 |
+ int ret; |
|
195 |
+ int64_t delta; |
|
196 |
+ |
|
197 |
+ while (1) { |
|
198 |
+ if ((ret = av_read_frame(cat->avf, pkt)) != AVERROR_EOF || |
|
199 |
+ (ret = open_next_file(avf)) < 0) |
|
200 |
+ break; |
|
201 |
+ } |
|
202 |
+ delta = av_rescale_q(cat->cur_file->start_time - cat->avf->start_time, |
|
203 |
+ AV_TIME_BASE_Q, |
|
204 |
+ cat->avf->streams[pkt->stream_index]->time_base); |
|
205 |
+ if (pkt->pts != AV_NOPTS_VALUE) |
|
206 |
+ pkt->pts += delta; |
|
207 |
+ if (pkt->dts != AV_NOPTS_VALUE) |
|
208 |
+ pkt->dts += delta; |
|
209 |
+ return ret; |
|
210 |
+} |
|
211 |
+ |
|
212 |
+AVInputFormat ff_concat_demuxer = { |
|
213 |
+ .name = "concat", |
|
214 |
+ .long_name = NULL_IF_CONFIG_SMALL("Virtual concatenation script"), |
|
215 |
+ .priv_data_size = sizeof(ConcatContext), |
|
216 |
+ .read_probe = concat_probe, |
|
217 |
+ .read_header = concat_read_header, |
|
218 |
+ .read_packet = concat_read_packet, |
|
219 |
+ .read_close = concat_read_close, |
|
220 |
+}; |
... | ... |
@@ -30,7 +30,7 @@ |
30 | 30 |
#include "libavutil/avutil.h" |
31 | 31 |
|
32 | 32 |
#define LIBAVFORMAT_VERSION_MAJOR 54 |
33 |
-#define LIBAVFORMAT_VERSION_MINOR 46 |
|
33 |
+#define LIBAVFORMAT_VERSION_MINOR 47 |
|
34 | 34 |
#define LIBAVFORMAT_VERSION_MICRO 100 |
35 | 35 |
|
36 | 36 |
#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \ |