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"
36 #include "libavcodec/bintext.h"
38 #define LINE_RATE 6000 /** characters per second */
42 uint64_t fsize; /**< file size less metadata buffer */
45 #if CONFIG_BINTEXT_DEMUXER | CONFIG_ADF_DEMUXER | CONFIG_IDF_DEMUXER
47 * Given filesize and width, calculate height (assume font_height of 16)
49 static void calculate_height(AVCodecContext *avctx, uint64_t fsize)
51 avctx->height = (fsize / ((avctx->width>>3)*2)) << 4;
55 #if CONFIG_BINTEXT_DEMUXER
56 static const uint8_t next_magic[]={
57 0x1A, 0x1B, '[', '0', ';', '3', '0', ';', '4', '0', 'm', 'N', 'E', 'X', 'T', 0x00
60 static int next_tag_read(AVFormatContext *avctx, uint64_t *fsize)
62 ByteIOContext *pb = avctx->pb;
65 uint64_t start_pos = url_fsize(pb) - 256;
67 url_fseek(pb, start_pos, SEEK_SET);
68 if (get_buffer(pb, buf, sizeof(next_magic)) != sizeof(next_magic))
70 if (memcmp(buf, next_magic, sizeof(next_magic)))
72 if (get_byte(pb) != 0x01)
77 #define GET_EFI2_META(name,size) \
79 if (len < 1 || len > size) \
81 if (get_buffer(pb, buf, size) == size && *buf) { \
83 av_metadata_set2(&avctx->metadata, name, buf, 0); \
86 GET_EFI2_META("filename", 12)
87 GET_EFI2_META("author", 20)
88 GET_EFI2_META("publisher", 20)
89 GET_EFI2_META("title", 35)
94 static void predict_width(AVCodecContext *avctx, uint64_t fsize, int got_width)
96 /** attempt to guess width */
98 avctx->width = fsize > 4000 ? (160<<3) : (80<<3);
101 static AVStream * init_stream(AVFormatContext *s,
102 AVFormatParameters *ap)
104 BinDemuxContext *bin = s->priv_data;
105 AVStream *st = av_new_stream(s, 0);
108 st->codec->codec_tag = 0;
109 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
111 if (!ap->time_base.num) {
112 av_set_pts_info(st, 60, 1, 25);
114 av_set_pts_info(st, 60, ap->time_base.num, ap->time_base.den);
117 /* simulate tty display speed */
118 bin->chars_per_frame = FFMAX(av_q2d(st->time_base) * (ap->sample_rate ? ap->sample_rate : LINE_RATE), 1);
120 st->codec->width = ap->width ? ap->width : (80<<3);
121 st->codec->height = ap->height ? ap->height : (25<<4);
125 static int bintext_read_header(AVFormatContext *s,
126 AVFormatParameters *ap)
128 BinDemuxContext *bin = s->priv_data;
129 ByteIOContext *pb = s->pb;
131 AVStream *st = init_stream(s, ap);
133 return AVERROR(ENOMEM);
134 st->codec->codec_id = CODEC_ID_BINTEXT;
136 st->codec->extradata_size = 2;
137 st->codec->extradata = av_malloc(st->codec->extradata_size);
138 if (!st->codec->extradata)
139 return AVERROR(ENOMEM);
140 st->codec->extradata[0] = 16;
141 st->codec->extradata[1] = 0;
143 if (!url_is_streamed(pb)) {
145 bin->fsize = url_fsize(pb);
146 if (ff_sauce_read(s, &bin->fsize, &got_width, 0) < 0)
147 next_tag_read(s, &bin->fsize);
149 predict_width(st->codec, bin->fsize, got_width);
151 calculate_height(st->codec, bin->fsize);
152 url_fseek(pb, 0, SEEK_SET);
156 #endif /* CONFIG_BINTEXT_DEMUXER */
158 #if CONFIG_XBIN_DEMUXER
159 static int xbin_probe(AVProbeData *p)
161 const uint8_t *d = p->buf;
163 if (AV_RL32(d) == MKTAG('X','B','I','N') && d[4] == 0x1A &&
164 AV_RL16(d+5) > 0 && AV_RL16(d+5) <= 160 &&
165 d[9] > 0 && d[9] <= 32)
166 return AVPROBE_SCORE_MAX;
170 static int xbin_read_header(AVFormatContext *s,
171 AVFormatParameters *ap)
173 BinDemuxContext *bin = s->priv_data;
174 ByteIOContext *pb = s->pb;
175 char fontheight, flags;
177 AVStream *st = init_stream(s, ap);
179 return AVERROR(ENOMEM);
182 st->codec->width = get_le16(pb)<<3;
183 st->codec->height = get_le16(pb);
184 fontheight = get_byte(pb);
185 st->codec->height *= fontheight;
186 flags = get_byte(pb);
188 st->codec->extradata_size = 2;
189 if ((flags & BINTEXT_PALETTE))
190 st->codec->extradata_size += 48;
191 if ((flags & BINTEXT_FONT))
192 st->codec->extradata_size += fontheight * (flags & 0x10 ? 512 : 256);
193 st->codec->codec_id = flags & 4 ? CODEC_ID_XBIN : CODEC_ID_BINTEXT;
195 st->codec->extradata = av_malloc(st->codec->extradata_size);
196 if (!st->codec->extradata)
197 return AVERROR(ENOMEM);
198 st->codec->extradata[0] = fontheight;
199 st->codec->extradata[1] = flags;
200 if (get_buffer(pb, st->codec->extradata + 2, st->codec->extradata_size - 2) < 0)
203 if (!url_is_streamed(pb)) {
204 bin->fsize = url_fsize(pb) - 9 - st->codec->extradata_size;
205 ff_sauce_read(s, &bin->fsize, NULL, 0);
206 url_fseek(pb, 9 + st->codec->extradata_size, SEEK_SET);
211 #endif /* CONFIG_XBIN_DEMUXER */
213 #if CONFIG_ADF_DEMUXER
214 static int adf_read_header(AVFormatContext *s,
215 AVFormatParameters *ap)
217 BinDemuxContext *bin = s->priv_data;
218 ByteIOContext *pb = s->pb;
221 if (get_byte(pb) != 1)
222 return AVERROR_INVALIDDATA;
224 st = init_stream(s, ap);
226 return AVERROR(ENOMEM);
227 st->codec->codec_id = CODEC_ID_BINTEXT;
229 st->codec->extradata_size = 2 + 48 + 4096;
230 st->codec->extradata = av_malloc(st->codec->extradata_size);
231 if (!st->codec->extradata)
232 return AVERROR(ENOMEM);
233 st->codec->extradata[0] = 16;
234 st->codec->extradata[1] = BINTEXT_PALETTE|BINTEXT_FONT;
236 if (get_buffer(pb, st->codec->extradata + 2, 24) < 0)
239 if (get_buffer(pb, st->codec->extradata + 2 + 24, 24) < 0)
241 if (get_buffer(pb, st->codec->extradata + 2 + 48, 4096) < 0)
244 if (!url_is_streamed(pb)) {
246 bin->fsize = url_fsize(pb) - 1 - 192 - 4096;
247 st->codec->width = 80<<3;
248 ff_sauce_read(s, &bin->fsize, &got_width, 0);
250 calculate_height(st->codec, bin->fsize);
251 url_fseek(pb, 1 + 192 + 4096, SEEK_SET);
255 #endif /* CONFIG_ADF_DEMUXER */
257 #if CONFIG_IDF_DEMUXER
258 static const uint8_t idf_magic[] = {
259 0x04, 0x31, 0x2e, 0x34, 0x00, 0x00, 0x00, 0x00, 0x4f, 0x00, 0x15, 0x00
262 static int idf_probe(AVProbeData *p)
264 if (p->buf_size < sizeof(idf_magic))
266 if (!memcmp(p->buf, idf_magic, sizeof(idf_magic)))
267 return AVPROBE_SCORE_MAX;
271 static int idf_read_header(AVFormatContext *s,
272 AVFormatParameters *ap)
274 BinDemuxContext *bin = s->priv_data;
275 ByteIOContext *pb = s->pb;
279 if (url_is_streamed(pb))
282 st = init_stream(s, ap);
284 return AVERROR(ENOMEM);
285 st->codec->codec_id = CODEC_ID_IDF;
287 st->codec->extradata_size = 2 + 48 + 4096;
288 st->codec->extradata = av_malloc(st->codec->extradata_size);
289 if (!st->codec->extradata)
290 return AVERROR(ENOMEM);
291 st->codec->extradata[0] = 16;
292 st->codec->extradata[1] = BINTEXT_PALETTE|BINTEXT_FONT;
294 url_fseek(pb, url_fsize(pb) - 4096 - 48, SEEK_SET);
296 if (get_buffer(pb, st->codec->extradata + 2 + 48, 4096) < 0)
298 if (get_buffer(pb, st->codec->extradata + 2, 48) < 0)
301 bin->fsize = url_fsize(pb) - 12 - 4096 - 48;
302 ff_sauce_read(s, &bin->fsize, &got_width, 0);
304 calculate_height(st->codec, bin->fsize);
305 url_fseek(pb, 12, SEEK_SET);
308 #endif /* CONFIG_IDF_DEMUXER */
310 static int read_packet(AVFormatContext *s,
313 BinDemuxContext *bin = s->priv_data;
315 if (bin->fsize > 0) {
316 if (av_get_packet(s->pb, pkt, bin->fsize) < 0)
318 bin->fsize = -1; /* done */
319 } else if (!bin->fsize) {
322 if (av_get_packet(s->pb, pkt, bin->chars_per_frame) < 0)
328 pkt->flags |= AV_PKT_FLAG_KEY;
332 #if CONFIG_BINTEXT_DEMUXER
333 AVInputFormat ff_bintext_demuxer = {
335 .long_name = NULL_IF_CONFIG_SMALL("Binary text"),
336 .priv_data_size = sizeof(BinDemuxContext),
337 .read_header = bintext_read_header,
338 .read_packet = read_packet,
343 #if CONFIG_XBIN_DEMUXER
344 AVInputFormat ff_xbin_demuxer = {
346 .long_name = NULL_IF_CONFIG_SMALL("eXtended BINary text (XBIN)"),
347 .priv_data_size = sizeof(BinDemuxContext),
348 .read_probe = xbin_probe,
349 .read_header = xbin_read_header,
350 .read_packet = read_packet,
354 #if CONFIG_ADF_DEMUXER
355 AVInputFormat ff_adf_demuxer = {
357 .long_name = NULL_IF_CONFIG_SMALL("Artworx Data Format"),
358 .priv_data_size = sizeof(BinDemuxContext),
359 .read_header = adf_read_header,
360 .read_packet = read_packet,
365 #if CONFIG_IDF_DEMUXER
366 AVInputFormat ff_idf_demuxer = {
368 .long_name = NULL_IF_CONFIG_SMALL("iCE Draw File"),
369 .priv_data_size = sizeof(BinDemuxContext),
370 .read_probe = idf_probe,
371 .read_header = idf_read_header,
372 .read_packet = read_packet,