3 * eXtended BINary text (XBIN) demuxer
4 * Artworx Data Format demuxer
6 * Copyright (c) 2010 Peter Ross <pross@xvid.org>
8 * This file is part of FFmpeg.
10 * FFmpeg is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Lesser General Public
12 * License as published by the Free Software Foundation; either
13 * version 2.1 of the License, or (at your option) any later version.
15 * FFmpeg is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Lesser General Public License for more details.
20 * You should have received a copy of the GNU Lesser General Public
21 * License along with FFmpeg; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
28 * eXtended BINary text (XBIN) demuxer
29 * Artworx Data Format demuxer
30 * iCEDraw File demuxer
33 #include "libavutil/intreadwrite.h"
37 #include "libavcodec/bintext.h"
39 #define LINE_RATE 6000 /** characters per second */
43 uint64_t fsize; /**< file size less metadata buffer */
46 #if CONFIG_BINTEXT_DEMUXER | CONFIG_ADF_DEMUXER | CONFIG_IDF_DEMUXER
48 * Given filesize and width, calculate height (assume font_height of 16)
50 static void calculate_height(AVCodecContext *avctx, uint64_t fsize)
52 avctx->height = (fsize / ((avctx->width>>3)*2)) << 4;
56 #if CONFIG_BINTEXT_DEMUXER
57 static const uint8_t next_magic[]={
58 0x1A, 0x1B, '[', '0', ';', '3', '0', ';', '4', '0', 'm', 'N', 'E', 'X', 'T', 0x00
61 static int next_tag_read(AVFormatContext *avctx, uint64_t *fsize)
63 AVIOContext *pb = avctx->pb;
66 uint64_t start_pos = avio_size(pb) - 256;
68 avio_seek(pb, start_pos, SEEK_SET);
69 if (avio_read(pb, buf, sizeof(next_magic)) != sizeof(next_magic))
71 if (memcmp(buf, next_magic, sizeof(next_magic)))
73 if (avio_r8(pb) != 0x01)
78 #define GET_EFI2_META(name,size) \
80 if (len < 1 || len > size) \
82 if (avio_read(pb, buf, size) == size && *buf) { \
84 av_dict_set(&avctx->metadata, name, buf, 0); \
87 GET_EFI2_META("filename", 12)
88 GET_EFI2_META("author", 20)
89 GET_EFI2_META("publisher", 20)
90 GET_EFI2_META("title", 35)
95 static void predict_width(AVCodecContext *avctx, uint64_t fsize, int got_width)
97 /** attempt to guess width */
99 avctx->width = fsize > 4000 ? (160<<3) : (80<<3);
102 static AVStream * init_stream(AVFormatContext *s,
103 AVFormatParameters *ap)
105 BinDemuxContext *bin = s->priv_data;
106 AVStream *st = avformat_new_stream(s, NULL);
109 st->codec->codec_tag = 0;
110 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
112 if (!ap->time_base.num) {
113 avpriv_set_pts_info(st, 60, 1, 25);
115 avpriv_set_pts_info(st, 60, ap->time_base.num, ap->time_base.den);
118 /* simulate tty display speed */
119 bin->chars_per_frame = FFMAX(av_q2d(st->time_base) * (ap->sample_rate ? ap->sample_rate : LINE_RATE), 1);
121 st->codec->width = ap->width ? ap->width : (80<<3);
122 st->codec->height = ap->height ? ap->height : (25<<4);
126 static int bintext_read_header(AVFormatContext *s,
127 AVFormatParameters *ap)
129 BinDemuxContext *bin = s->priv_data;
130 AVIOContext *pb = s->pb;
132 AVStream *st = init_stream(s, ap);
134 return AVERROR(ENOMEM);
135 st->codec->codec_id = CODEC_ID_BINTEXT;
137 st->codec->extradata_size = 2;
138 st->codec->extradata = av_malloc(st->codec->extradata_size);
139 if (!st->codec->extradata)
140 return AVERROR(ENOMEM);
141 st->codec->extradata[0] = 16;
142 st->codec->extradata[1] = 0;
146 bin->fsize = avio_size(pb);
147 if (ff_sauce_read(s, &bin->fsize, &got_width, 0) < 0)
148 next_tag_read(s, &bin->fsize);
150 predict_width(st->codec, bin->fsize, got_width);
152 calculate_height(st->codec, bin->fsize);
153 avio_seek(pb, 0, SEEK_SET);
157 #endif /* CONFIG_BINTEXT_DEMUXER */
159 #if CONFIG_XBIN_DEMUXER
160 static int xbin_probe(AVProbeData *p)
162 const uint8_t *d = p->buf;
164 if (AV_RL32(d) == MKTAG('X','B','I','N') && d[4] == 0x1A &&
165 AV_RL16(d+5) > 0 && AV_RL16(d+5) <= 160 &&
166 d[9] > 0 && d[9] <= 32)
167 return AVPROBE_SCORE_MAX;
171 static int xbin_read_header(AVFormatContext *s,
172 AVFormatParameters *ap)
174 BinDemuxContext *bin = s->priv_data;
175 AVIOContext *pb = s->pb;
176 char fontheight, flags;
178 AVStream *st = init_stream(s, ap);
180 return AVERROR(ENOMEM);
183 st->codec->width = avio_rl16(pb)<<3;
184 st->codec->height = avio_rl16(pb);
185 fontheight = avio_r8(pb);
186 st->codec->height *= fontheight;
189 st->codec->extradata_size = 2;
190 if ((flags & BINTEXT_PALETTE))
191 st->codec->extradata_size += 48;
192 if ((flags & BINTEXT_FONT))
193 st->codec->extradata_size += fontheight * (flags & 0x10 ? 512 : 256);
194 st->codec->codec_id = flags & 4 ? CODEC_ID_XBIN : CODEC_ID_BINTEXT;
196 st->codec->extradata = av_malloc(st->codec->extradata_size);
197 if (!st->codec->extradata)
198 return AVERROR(ENOMEM);
199 st->codec->extradata[0] = fontheight;
200 st->codec->extradata[1] = flags;
201 if (avio_read(pb, st->codec->extradata + 2, st->codec->extradata_size - 2) < 0)
205 bin->fsize = avio_size(pb) - 9 - st->codec->extradata_size;
206 ff_sauce_read(s, &bin->fsize, NULL, 0);
207 avio_seek(pb, 9 + st->codec->extradata_size, SEEK_SET);
212 #endif /* CONFIG_XBIN_DEMUXER */
214 #if CONFIG_ADF_DEMUXER
215 static int adf_read_header(AVFormatContext *s,
216 AVFormatParameters *ap)
218 BinDemuxContext *bin = s->priv_data;
219 AVIOContext *pb = s->pb;
222 if (avio_r8(pb) != 1)
223 return AVERROR_INVALIDDATA;
225 st = init_stream(s, ap);
227 return AVERROR(ENOMEM);
228 st->codec->codec_id = CODEC_ID_BINTEXT;
230 st->codec->extradata_size = 2 + 48 + 4096;
231 st->codec->extradata = av_malloc(st->codec->extradata_size);
232 if (!st->codec->extradata)
233 return AVERROR(ENOMEM);
234 st->codec->extradata[0] = 16;
235 st->codec->extradata[1] = BINTEXT_PALETTE|BINTEXT_FONT;
237 if (avio_read(pb, st->codec->extradata + 2, 24) < 0)
240 if (avio_read(pb, st->codec->extradata + 2 + 24, 24) < 0)
242 if (avio_read(pb, st->codec->extradata + 2 + 48, 4096) < 0)
247 bin->fsize = avio_size(pb) - 1 - 192 - 4096;
248 st->codec->width = 80<<3;
249 ff_sauce_read(s, &bin->fsize, &got_width, 0);
251 calculate_height(st->codec, bin->fsize);
252 avio_seek(pb, 1 + 192 + 4096, SEEK_SET);
256 #endif /* CONFIG_ADF_DEMUXER */
258 #if CONFIG_IDF_DEMUXER
259 static const uint8_t idf_magic[] = {
260 0x04, 0x31, 0x2e, 0x34, 0x00, 0x00, 0x00, 0x00, 0x4f, 0x00, 0x15, 0x00
263 static int idf_probe(AVProbeData *p)
265 if (p->buf_size < sizeof(idf_magic))
267 if (!memcmp(p->buf, idf_magic, sizeof(idf_magic)))
268 return AVPROBE_SCORE_MAX;
272 static int idf_read_header(AVFormatContext *s,
273 AVFormatParameters *ap)
275 BinDemuxContext *bin = s->priv_data;
276 AVIOContext *pb = s->pb;
283 st = init_stream(s, ap);
285 return AVERROR(ENOMEM);
286 st->codec->codec_id = CODEC_ID_IDF;
288 st->codec->extradata_size = 2 + 48 + 4096;
289 st->codec->extradata = av_malloc(st->codec->extradata_size);
290 if (!st->codec->extradata)
291 return AVERROR(ENOMEM);
292 st->codec->extradata[0] = 16;
293 st->codec->extradata[1] = BINTEXT_PALETTE|BINTEXT_FONT;
295 avio_seek(pb, avio_size(pb) - 4096 - 48, SEEK_SET);
297 if (avio_read(pb, st->codec->extradata + 2 + 48, 4096) < 0)
299 if (avio_read(pb, st->codec->extradata + 2, 48) < 0)
302 bin->fsize = avio_size(pb) - 12 - 4096 - 48;
303 ff_sauce_read(s, &bin->fsize, &got_width, 0);
305 calculate_height(st->codec, bin->fsize);
306 avio_seek(pb, 12, SEEK_SET);
309 #endif /* CONFIG_IDF_DEMUXER */
311 static int read_packet(AVFormatContext *s,
314 BinDemuxContext *bin = s->priv_data;
316 if (bin->fsize > 0) {
317 if (av_get_packet(s->pb, pkt, bin->fsize) < 0)
319 bin->fsize = -1; /* done */
320 } else if (!bin->fsize) {
323 if (av_get_packet(s->pb, pkt, bin->chars_per_frame) < 0)
329 pkt->flags |= AV_PKT_FLAG_KEY;
333 #if CONFIG_BINTEXT_DEMUXER
334 AVInputFormat ff_bintext_demuxer = {
336 .long_name = NULL_IF_CONFIG_SMALL("Binary text"),
337 .priv_data_size = sizeof(BinDemuxContext),
338 .read_header = bintext_read_header,
339 .read_packet = read_packet,
344 #if CONFIG_XBIN_DEMUXER
345 AVInputFormat ff_xbin_demuxer = {
347 .long_name = NULL_IF_CONFIG_SMALL("eXtended BINary text (XBIN)"),
348 .priv_data_size = sizeof(BinDemuxContext),
349 .read_probe = xbin_probe,
350 .read_header = xbin_read_header,
351 .read_packet = read_packet,
355 #if CONFIG_ADF_DEMUXER
356 AVInputFormat ff_adf_demuxer = {
358 .long_name = NULL_IF_CONFIG_SMALL("Artworx Data Format"),
359 .priv_data_size = sizeof(BinDemuxContext),
360 .read_header = adf_read_header,
361 .read_packet = read_packet,
366 #if CONFIG_IDF_DEMUXER
367 AVInputFormat ff_idf_demuxer = {
369 .long_name = NULL_IF_CONFIG_SMALL("iCE Draw File"),
370 .priv_data_size = sizeof(BinDemuxContext),
371 .read_probe = idf_probe,
372 .read_header = idf_read_header,
373 .read_packet = read_packet,