3 * Copyright (c) 2008 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
5 * This file is part of Libav.
7 * Libav is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * Libav is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 #include "libavutil/intreadwrite.h"
25 #include "libavutil/dict.h"
26 #include "libavutil/mathematics.h"
31 unsigned video_offsets_count;
32 unsigned *video_offsets;
42 static int read_atom(AVFormatContext *s, Atom *atom)
44 atom->offset = avio_tell(s->pb);
45 atom->size = avio_rb32(s->pb);
48 atom->tag = avio_rl32(s->pb);
49 av_dlog(s, "atom %u %.4s offset %#"PRIx64"\n",
50 atom->size, (char*)&atom->tag, atom->offset);
54 static int r3d_read_red1(AVFormatContext *s)
56 AVStream *st = avformat_new_stream(s, NULL);
63 return AVERROR(ENOMEM);
64 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
65 st->codec->codec_id = AV_CODEC_ID_JPEG2000;
67 tmp = avio_r8(s->pb); // major version
68 tmp2 = avio_r8(s->pb); // minor version
69 av_dlog(s, "version %d.%d\n", tmp, tmp2);
71 tmp = avio_rb16(s->pb); // unknown
72 av_dlog(s, "unknown1 %d\n", tmp);
74 tmp = avio_rb32(s->pb);
75 avpriv_set_pts_info(st, 32, 1, tmp);
77 tmp = avio_rb32(s->pb); // filenum
78 av_dlog(s, "filenum %d\n", tmp);
80 avio_skip(s->pb, 32); // unknown
82 st->codec->width = avio_rb32(s->pb);
83 st->codec->height = avio_rb32(s->pb);
85 tmp = avio_rb16(s->pb); // unknown
86 av_dlog(s, "unknown2 %d\n", tmp);
88 framerate.num = avio_rb16(s->pb);
89 framerate.den = avio_rb16(s->pb);
90 if (framerate.num && framerate.den) {
91 st->avg_frame_rate = framerate;
94 tmp = avio_r8(s->pb); // audio channels
95 av_dlog(s, "audio channels %d\n", tmp);
97 AVStream *ast = avformat_new_stream(s, NULL);
99 return AVERROR(ENOMEM);
100 ast->codec->codec_type = AVMEDIA_TYPE_AUDIO;
101 ast->codec->codec_id = AV_CODEC_ID_PCM_S32BE;
102 ast->codec->channels = tmp;
103 avpriv_set_pts_info(ast, 32, 1, st->time_base.den);
106 avio_read(s->pb, filename, 257);
107 filename[sizeof(filename)-1] = 0;
108 av_dict_set(&st->metadata, "filename", filename, 0);
110 av_dlog(s, "filename %s\n", filename);
111 av_dlog(s, "resolution %dx%d\n", st->codec->width, st->codec->height);
112 av_dlog(s, "timescale %d\n", st->time_base.den);
113 av_dlog(s, "frame rate %d/%d\n",
114 framerate.num, framerate.den);
119 static int r3d_read_rdvo(AVFormatContext *s, Atom *atom)
121 R3DContext *r3d = s->priv_data;
122 AVStream *st = s->streams[0];
125 r3d->video_offsets_count = (atom->size - 8) / 4;
126 r3d->video_offsets = av_malloc(atom->size);
127 if (!r3d->video_offsets)
128 return AVERROR(ENOMEM);
130 for (i = 0; i < r3d->video_offsets_count; i++) {
131 r3d->video_offsets[i] = avio_rb32(s->pb);
132 if (!r3d->video_offsets[i]) {
133 r3d->video_offsets_count = i;
136 av_dlog(s, "video offset %d: %#x\n", i, r3d->video_offsets[i]);
139 if (st->avg_frame_rate.num)
140 st->duration = av_rescale_q(r3d->video_offsets_count,
141 (AVRational){st->avg_frame_rate.den,
142 st->avg_frame_rate.num},
144 av_dlog(s, "duration %"PRId64"\n", st->duration);
149 static void r3d_read_reos(AVFormatContext *s)
151 R3DContext *r3d = s->priv_data;
154 r3d->rdvo_offset = avio_rb32(s->pb);
155 avio_rb32(s->pb); // rdvs offset
156 avio_rb32(s->pb); // rdao offset
157 avio_rb32(s->pb); // rdas offset
159 tmp = avio_rb32(s->pb);
160 av_dlog(s, "num video chunks %d\n", tmp);
162 tmp = avio_rb32(s->pb);
163 av_dlog(s, "num audio chunks %d\n", tmp);
165 avio_skip(s->pb, 6*4);
168 static int r3d_read_header(AVFormatContext *s)
170 R3DContext *r3d = s->priv_data;
174 if (read_atom(s, &atom) < 0) {
175 av_log(s, AV_LOG_ERROR, "error reading atom\n");
178 if (atom.tag == MKTAG('R','E','D','1')) {
179 if ((ret = r3d_read_red1(s)) < 0) {
180 av_log(s, AV_LOG_ERROR, "error parsing 'red1' atom\n");
184 av_log(s, AV_LOG_ERROR, "could not find 'red1' atom\n");
188 s->data_offset = avio_tell(s->pb);
189 av_dlog(s, "data offset %#"PRIx64"\n", s->data_offset);
190 if (!s->pb->seekable)
192 // find REOB/REOF/REOS to load index
193 avio_seek(s->pb, avio_size(s->pb)-48-8, SEEK_SET);
194 if (read_atom(s, &atom) < 0)
195 av_log(s, AV_LOG_ERROR, "error reading end atom\n");
197 if (atom.tag != MKTAG('R','E','O','B') &&
198 atom.tag != MKTAG('R','E','O','F') &&
199 atom.tag != MKTAG('R','E','O','S'))
204 if (r3d->rdvo_offset) {
205 avio_seek(s->pb, r3d->rdvo_offset, SEEK_SET);
206 if (read_atom(s, &atom) < 0)
207 av_log(s, AV_LOG_ERROR, "error reading 'rdvo' atom\n");
208 if (atom.tag == MKTAG('R','D','V','O')) {
209 if (r3d_read_rdvo(s, &atom) < 0)
210 av_log(s, AV_LOG_ERROR, "error parsing 'rdvo' atom\n");
215 avio_seek(s->pb, s->data_offset, SEEK_SET);
219 static int r3d_read_redv(AVFormatContext *s, AVPacket *pkt, Atom *atom)
221 AVStream *st = s->streams[0];
224 uint64_t pos = avio_tell(s->pb);
228 dts = avio_rb32(s->pb);
230 tmp = avio_rb32(s->pb);
231 av_dlog(s, "frame num %d\n", tmp);
233 tmp = avio_r8(s->pb); // major version
234 tmp2 = avio_r8(s->pb); // minor version
235 av_dlog(s, "version %d.%d\n", tmp, tmp2);
237 tmp = avio_rb16(s->pb); // unknown
238 av_dlog(s, "unknown %d\n", tmp);
241 tmp = avio_rb16(s->pb); // unknown
242 av_dlog(s, "unknown %d\n", tmp);
244 tmp = avio_rb16(s->pb); // unknown
245 av_dlog(s, "unknown %d\n", tmp);
247 tmp = avio_rb32(s->pb);
248 av_dlog(s, "width %d\n", tmp);
249 tmp = avio_rb32(s->pb);
250 av_dlog(s, "height %d\n", tmp);
252 tmp = avio_rb32(s->pb);
253 av_dlog(s, "metadata len %d\n", tmp);
255 tmp = atom->size - 8 - (avio_tell(s->pb) - pos);
258 ret = av_get_packet(s->pb, pkt, tmp);
260 av_log(s, AV_LOG_ERROR, "error reading video packet\n");
264 pkt->stream_index = 0;
266 if (st->avg_frame_rate.num)
267 pkt->duration = (uint64_t)st->time_base.den*
268 st->avg_frame_rate.den/st->avg_frame_rate.num;
269 av_dlog(s, "pkt dts %"PRId64" duration %d\n", pkt->dts, pkt->duration);
274 static int r3d_read_reda(AVFormatContext *s, AVPacket *pkt, Atom *atom)
276 AVStream *st = s->streams[1];
277 int av_unused tmp, tmp2;
279 uint64_t pos = avio_tell(s->pb);
283 dts = avio_rb32(s->pb);
285 st->codec->sample_rate = avio_rb32(s->pb);
287 samples = avio_rb32(s->pb);
289 tmp = avio_rb32(s->pb);
290 av_dlog(s, "packet num %d\n", tmp);
292 tmp = avio_rb16(s->pb); // unknown
293 av_dlog(s, "unknown %d\n", tmp);
295 tmp = avio_r8(s->pb); // major version
296 tmp2 = avio_r8(s->pb); // minor version
297 av_dlog(s, "version %d.%d\n", tmp, tmp2);
299 tmp = avio_rb32(s->pb); // unknown
300 av_dlog(s, "unknown %d\n", tmp);
302 size = atom->size - 8 - (avio_tell(s->pb) - pos);
305 ret = av_get_packet(s->pb, pkt, size);
307 av_log(s, AV_LOG_ERROR, "error reading audio packet\n");
311 pkt->stream_index = 1;
313 pkt->duration = av_rescale(samples, st->time_base.den, st->codec->sample_rate);
314 av_dlog(s, "pkt dts %"PRId64" duration %d samples %d sample rate %d\n",
315 pkt->dts, pkt->duration, samples, st->codec->sample_rate);
320 static int r3d_read_packet(AVFormatContext *s, AVPacket *pkt)
326 if (read_atom(s, &atom) < 0) {
331 case MKTAG('R','E','D','V'):
332 if (s->streams[0]->discard == AVDISCARD_ALL)
334 if (!(err = r3d_read_redv(s, pkt, &atom)))
337 case MKTAG('R','E','D','A'):
338 if (s->nb_streams < 2)
340 if (s->streams[1]->discard == AVDISCARD_ALL)
342 if (!(err = r3d_read_reda(s, pkt, &atom)))
347 avio_skip(s->pb, atom.size-8);
353 static int r3d_probe(AVProbeData *p)
355 if (AV_RL32(p->buf + 4) == MKTAG('R','E','D','1'))
356 return AVPROBE_SCORE_MAX;
360 static int r3d_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
362 AVStream *st = s->streams[0]; // video stream
363 R3DContext *r3d = s->priv_data;
366 if (!st->avg_frame_rate.num)
369 frame_num = av_rescale_q(sample_time, st->time_base,
370 (AVRational){st->avg_frame_rate.den, st->avg_frame_rate.num});
371 av_dlog(s, "seek frame num %d timestamp %"PRId64"\n",
372 frame_num, sample_time);
374 if (frame_num < r3d->video_offsets_count) {
375 if (avio_seek(s->pb, r3d->video_offsets_count, SEEK_SET) < 0)
378 av_log(s, AV_LOG_ERROR, "could not seek to frame %d\n", frame_num);
385 static int r3d_close(AVFormatContext *s)
387 R3DContext *r3d = s->priv_data;
389 av_freep(&r3d->video_offsets);
394 AVInputFormat ff_r3d_demuxer = {
396 .long_name = NULL_IF_CONFIG_SMALL("REDCODE R3D"),
397 .priv_data_size = sizeof(R3DContext),
398 .read_probe = r3d_probe,
399 .read_header = r3d_read_header,
400 .read_packet = r3d_read_packet,
401 .read_close = r3d_close,
402 .read_seek = r3d_seek,