3 * Copyright (c) 2008 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
5 * This file is part of FFmpeg.
7 * FFmpeg 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 * FFmpeg 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 FFmpeg; 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);
62 return AVERROR(ENOMEM);
63 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
64 st->codec->codec_id = CODEC_ID_JPEG2000;
66 tmp = avio_r8(s->pb); // major version
67 tmp2 = avio_r8(s->pb); // minor version
68 av_dlog(s, "version %d.%d\n", tmp, tmp2);
70 tmp = avio_rb16(s->pb); // unknown
71 av_dlog(s, "unknown1 %d\n", tmp);
73 tmp = avio_rb32(s->pb);
74 avpriv_set_pts_info(st, 32, 1, tmp);
76 tmp = avio_rb32(s->pb); // filenum
77 av_dlog(s, "filenum %d\n", tmp);
79 avio_skip(s->pb, 32); // unknown
81 st->codec->width = avio_rb32(s->pb);
82 st->codec->height = avio_rb32(s->pb);
84 tmp = avio_rb16(s->pb); // unknown
85 av_dlog(s, "unknown2 %d\n", tmp);
87 st->codec->time_base.den = avio_rb16(s->pb);
88 st->codec->time_base.num = avio_rb16(s->pb);
90 tmp = avio_r8(s->pb); // audio channels
91 av_dlog(s, "audio channels %d\n", tmp);
93 AVStream *ast = avformat_new_stream(s, NULL);
95 return AVERROR(ENOMEM);
96 ast->codec->codec_type = AVMEDIA_TYPE_AUDIO;
97 ast->codec->codec_id = CODEC_ID_PCM_S32BE;
98 ast->codec->channels = tmp;
99 avpriv_set_pts_info(ast, 32, 1, st->time_base.den);
102 avio_read(s->pb, filename, 257);
103 filename[sizeof(filename)-1] = 0;
104 av_dict_set(&st->metadata, "filename", filename, 0);
106 av_dlog(s, "filename %s\n", filename);
107 av_dlog(s, "resolution %dx%d\n", st->codec->width, st->codec->height);
108 av_dlog(s, "timescale %d\n", st->time_base.den);
109 av_dlog(s, "frame rate %d/%d\n",
110 st->codec->time_base.num, st->codec->time_base.den);
115 static int r3d_read_rdvo(AVFormatContext *s, Atom *atom)
117 R3DContext *r3d = s->priv_data;
118 AVStream *st = s->streams[0];
121 r3d->video_offsets_count = (atom->size - 8) / 4;
122 r3d->video_offsets = av_malloc(atom->size);
123 if (!r3d->video_offsets)
124 return AVERROR(ENOMEM);
126 for (i = 0; i < r3d->video_offsets_count; i++) {
127 r3d->video_offsets[i] = avio_rb32(s->pb);
128 if (!r3d->video_offsets[i]) {
129 r3d->video_offsets_count = i;
132 av_dlog(s, "video offset %d: %#x\n", i, r3d->video_offsets[i]);
135 if (st->codec->time_base.den)
136 st->duration = (uint64_t)r3d->video_offsets_count*
137 st->time_base.den*st->codec->time_base.num/st->codec->time_base.den;
138 av_dlog(s, "duration %"PRId64"\n", st->duration);
143 static void r3d_read_reos(AVFormatContext *s)
145 R3DContext *r3d = s->priv_data;
148 r3d->rdvo_offset = avio_rb32(s->pb);
149 avio_rb32(s->pb); // rdvs offset
150 avio_rb32(s->pb); // rdao offset
151 avio_rb32(s->pb); // rdas offset
153 tmp = avio_rb32(s->pb);
154 av_dlog(s, "num video chunks %d\n", tmp);
156 tmp = avio_rb32(s->pb);
157 av_dlog(s, "num audio chunks %d\n", tmp);
159 avio_skip(s->pb, 6*4);
162 static int r3d_read_header(AVFormatContext *s)
164 R3DContext *r3d = s->priv_data;
168 if (read_atom(s, &atom) < 0) {
169 av_log(s, AV_LOG_ERROR, "error reading atom\n");
172 if (atom.tag == MKTAG('R','E','D','1')) {
173 if ((ret = r3d_read_red1(s)) < 0) {
174 av_log(s, AV_LOG_ERROR, "error parsing 'red1' atom\n");
178 av_log(s, AV_LOG_ERROR, "could not find 'red1' atom\n");
182 s->data_offset = avio_tell(s->pb);
183 av_dlog(s, "data offset %#"PRIx64"\n", s->data_offset);
184 if (!s->pb->seekable)
186 // find REOB/REOF/REOS to load index
187 avio_seek(s->pb, avio_size(s->pb)-48-8, SEEK_SET);
188 if (read_atom(s, &atom) < 0)
189 av_log(s, AV_LOG_ERROR, "error reading end atom\n");
191 if (atom.tag != MKTAG('R','E','O','B') &&
192 atom.tag != MKTAG('R','E','O','F') &&
193 atom.tag != MKTAG('R','E','O','S'))
198 if (r3d->rdvo_offset) {
199 avio_seek(s->pb, r3d->rdvo_offset, SEEK_SET);
200 if (read_atom(s, &atom) < 0)
201 av_log(s, AV_LOG_ERROR, "error reading 'rdvo' atom\n");
202 if (atom.tag == MKTAG('R','D','V','O')) {
203 if (r3d_read_rdvo(s, &atom) < 0)
204 av_log(s, AV_LOG_ERROR, "error parsing 'rdvo' atom\n");
209 avio_seek(s->pb, s->data_offset, SEEK_SET);
213 static int r3d_read_redv(AVFormatContext *s, AVPacket *pkt, Atom *atom)
215 AVStream *st = s->streams[0];
218 uint64_t pos = avio_tell(s->pb);
222 dts = avio_rb32(s->pb);
224 tmp = avio_rb32(s->pb);
225 av_dlog(s, "frame num %d\n", tmp);
227 tmp = avio_r8(s->pb); // major version
228 tmp2 = avio_r8(s->pb); // minor version
229 av_dlog(s, "version %d.%d\n", tmp, tmp2);
231 tmp = avio_rb16(s->pb); // unknown
232 av_dlog(s, "unknown %d\n", tmp);
235 tmp = avio_rb16(s->pb); // unknown
236 av_dlog(s, "unknown %d\n", tmp);
238 tmp = avio_rb16(s->pb); // unknown
239 av_dlog(s, "unknown %d\n", tmp);
241 tmp = avio_rb32(s->pb);
242 av_dlog(s, "width %d\n", tmp);
243 tmp = avio_rb32(s->pb);
244 av_dlog(s, "height %d\n", tmp);
246 tmp = avio_rb32(s->pb);
247 av_dlog(s, "metadata len %d\n", tmp);
249 tmp = atom->size - 8 - (avio_tell(s->pb) - pos);
252 ret = av_get_packet(s->pb, pkt, tmp);
254 av_log(s, AV_LOG_ERROR, "error reading video packet\n");
258 pkt->stream_index = 0;
260 if (st->codec->time_base.den)
261 pkt->duration = (uint64_t)st->time_base.den*
262 st->codec->time_base.num/st->codec->time_base.den;
263 av_dlog(s, "pkt dts %"PRId64" duration %d\n", pkt->dts, pkt->duration);
268 static int r3d_read_reda(AVFormatContext *s, AVPacket *pkt, Atom *atom)
270 AVStream *st = s->streams[1];
271 int av_unused tmp, tmp2;
273 uint64_t pos = avio_tell(s->pb);
277 dts = avio_rb32(s->pb);
279 st->codec->sample_rate = avio_rb32(s->pb);
281 samples = avio_rb32(s->pb);
283 tmp = avio_rb32(s->pb);
284 av_dlog(s, "packet num %d\n", tmp);
286 tmp = avio_rb16(s->pb); // unkown
287 av_dlog(s, "unknown %d\n", tmp);
289 tmp = avio_r8(s->pb); // major version
290 tmp2 = avio_r8(s->pb); // minor version
291 av_dlog(s, "version %d.%d\n", tmp, tmp2);
293 tmp = avio_rb32(s->pb); // unknown
294 av_dlog(s, "unknown %d\n", tmp);
296 size = atom->size - 8 - (avio_tell(s->pb) - pos);
299 ret = av_get_packet(s->pb, pkt, size);
301 av_log(s, AV_LOG_ERROR, "error reading audio packet\n");
305 pkt->stream_index = 1;
307 pkt->duration = av_rescale(samples, st->time_base.den, st->codec->sample_rate);
308 av_dlog(s, "pkt dts %"PRId64" duration %d samples %d sample rate %d\n",
309 pkt->dts, pkt->duration, samples, st->codec->sample_rate);
314 static int r3d_read_packet(AVFormatContext *s, AVPacket *pkt)
320 if (read_atom(s, &atom) < 0) {
325 case MKTAG('R','E','D','V'):
326 if (s->streams[0]->discard == AVDISCARD_ALL)
328 if (!(err = r3d_read_redv(s, pkt, &atom)))
331 case MKTAG('R','E','D','A'):
332 if (s->nb_streams < 2)
334 if (s->streams[1]->discard == AVDISCARD_ALL)
336 if (!(err = r3d_read_reda(s, pkt, &atom)))
341 avio_skip(s->pb, atom.size-8);
347 static int r3d_probe(AVProbeData *p)
349 if (AV_RL32(p->buf + 4) == MKTAG('R','E','D','1'))
350 return AVPROBE_SCORE_MAX;
354 static int r3d_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
356 AVStream *st = s->streams[0]; // video stream
357 R3DContext *r3d = s->priv_data;
360 if (!st->codec->time_base.num || !st->time_base.den)
363 frame_num = sample_time*st->codec->time_base.den/
364 ((int64_t)st->codec->time_base.num*st->time_base.den);
365 av_dlog(s, "seek frame num %d timestamp %"PRId64"\n",
366 frame_num, sample_time);
368 if (frame_num < r3d->video_offsets_count) {
369 if (avio_seek(s->pb, r3d->video_offsets_count, SEEK_SET) < 0)
372 av_log(s, AV_LOG_ERROR, "could not seek to frame %d\n", frame_num);
379 static int r3d_close(AVFormatContext *s)
381 R3DContext *r3d = s->priv_data;
383 av_freep(&r3d->video_offsets);
388 AVInputFormat ff_r3d_demuxer = {
390 .long_name = NULL_IF_CONFIG_SMALL("REDCODE R3D format"),
391 .priv_data_size = sizeof(R3DContext),
392 .read_probe = r3d_probe,
393 .read_header = r3d_read_header,
394 .read_packet = r3d_read_packet,
395 .read_close = r3d_close,
396 .read_seek = r3d_seek,