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"
30 unsigned video_offsets_count;
31 unsigned *video_offsets;
41 static int read_atom(AVFormatContext *s, Atom *atom)
43 atom->offset = avio_tell(s->pb);
44 atom->size = avio_rb32(s->pb);
47 atom->tag = avio_rl32(s->pb);
48 av_dlog(s, "atom %u %.4s offset %#"PRIx64"\n",
49 atom->size, (char*)&atom->tag, atom->offset);
53 static int r3d_read_red1(AVFormatContext *s)
55 AVStream *st = avformat_new_stream(s, NULL);
61 return AVERROR(ENOMEM);
62 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
63 st->codec->codec_id = CODEC_ID_JPEG2000;
65 tmp = avio_r8(s->pb); // major version
66 tmp2 = avio_r8(s->pb); // minor version
67 av_dlog(s, "version %d.%d\n", tmp, tmp2);
69 tmp = avio_rb16(s->pb); // unknown
70 av_dlog(s, "unknown1 %d\n", tmp);
72 tmp = avio_rb32(s->pb);
73 av_set_pts_info(st, 32, 1, tmp);
75 tmp = avio_rb32(s->pb); // filenum
76 av_dlog(s, "filenum %d\n", tmp);
78 avio_skip(s->pb, 32); // unknown
80 st->codec->width = avio_rb32(s->pb);
81 st->codec->height = avio_rb32(s->pb);
83 tmp = avio_rb16(s->pb); // unknown
84 av_dlog(s, "unknown2 %d\n", tmp);
86 st->codec->time_base.den = avio_rb16(s->pb);
87 st->codec->time_base.num = avio_rb16(s->pb);
89 tmp = avio_r8(s->pb); // audio channels
90 av_dlog(s, "audio channels %d\n", tmp);
92 AVStream *ast = avformat_new_stream(s, NULL);
94 return AVERROR(ENOMEM);
95 ast->codec->codec_type = AVMEDIA_TYPE_AUDIO;
96 ast->codec->codec_id = CODEC_ID_PCM_S32BE;
97 ast->codec->channels = tmp;
98 av_set_pts_info(ast, 32, 1, st->time_base.den);
101 avio_read(s->pb, filename, 257);
102 filename[sizeof(filename)-1] = 0;
103 av_dict_set(&st->metadata, "filename", filename, 0);
105 av_dlog(s, "filename %s\n", filename);
106 av_dlog(s, "resolution %dx%d\n", st->codec->width, st->codec->height);
107 av_dlog(s, "timescale %d\n", st->time_base.den);
108 av_dlog(s, "frame rate %d/%d\n",
109 st->codec->time_base.num, st->codec->time_base.den);
114 static int r3d_read_rdvo(AVFormatContext *s, Atom *atom)
116 R3DContext *r3d = s->priv_data;
117 AVStream *st = s->streams[0];
120 r3d->video_offsets_count = (atom->size - 8) / 4;
121 r3d->video_offsets = av_malloc(atom->size);
122 if (!r3d->video_offsets)
123 return AVERROR(ENOMEM);
125 for (i = 0; i < r3d->video_offsets_count; i++) {
126 r3d->video_offsets[i] = avio_rb32(s->pb);
127 if (!r3d->video_offsets[i]) {
128 r3d->video_offsets_count = i;
131 av_dlog(s, "video offset %d: %#x\n", i, r3d->video_offsets[i]);
134 if (st->codec->time_base.den)
135 st->duration = (uint64_t)r3d->video_offsets_count*
136 st->time_base.den*st->codec->time_base.num/st->codec->time_base.den;
137 av_dlog(s, "duration %"PRId64"\n", st->duration);
142 static void r3d_read_reos(AVFormatContext *s)
144 R3DContext *r3d = s->priv_data;
147 r3d->rdvo_offset = avio_rb32(s->pb);
148 avio_rb32(s->pb); // rdvs offset
149 avio_rb32(s->pb); // rdao offset
150 avio_rb32(s->pb); // rdas offset
152 tmp = avio_rb32(s->pb);
153 av_dlog(s, "num video chunks %d\n", tmp);
155 tmp = avio_rb32(s->pb);
156 av_dlog(s, "num audio chunks %d\n", tmp);
158 avio_skip(s->pb, 6*4);
161 static int r3d_read_header(AVFormatContext *s, AVFormatParameters *ap)
163 R3DContext *r3d = s->priv_data;
167 if (read_atom(s, &atom) < 0) {
168 av_log(s, AV_LOG_ERROR, "error reading atom\n");
171 if (atom.tag == MKTAG('R','E','D','1')) {
172 if ((ret = r3d_read_red1(s)) < 0) {
173 av_log(s, AV_LOG_ERROR, "error parsing 'red1' atom\n");
177 av_log(s, AV_LOG_ERROR, "could not find 'red1' atom\n");
181 s->data_offset = avio_tell(s->pb);
182 av_dlog(s, "data offset %#"PRIx64"\n", s->data_offset);
183 if (!s->pb->seekable)
185 // find REOB/REOF/REOS to load index
186 avio_seek(s->pb, avio_size(s->pb)-48-8, SEEK_SET);
187 if (read_atom(s, &atom) < 0)
188 av_log(s, AV_LOG_ERROR, "error reading end atom\n");
190 if (atom.tag != MKTAG('R','E','O','B') &&
191 atom.tag != MKTAG('R','E','O','F') &&
192 atom.tag != MKTAG('R','E','O','S'))
197 if (r3d->rdvo_offset) {
198 avio_seek(s->pb, r3d->rdvo_offset, SEEK_SET);
199 if (read_atom(s, &atom) < 0)
200 av_log(s, AV_LOG_ERROR, "error reading 'rdvo' atom\n");
201 if (atom.tag == MKTAG('R','D','V','O')) {
202 if (r3d_read_rdvo(s, &atom) < 0)
203 av_log(s, AV_LOG_ERROR, "error parsing 'rdvo' atom\n");
208 avio_seek(s->pb, s->data_offset, SEEK_SET);
212 static int r3d_read_redv(AVFormatContext *s, AVPacket *pkt, Atom *atom)
214 AVStream *st = s->streams[0];
217 uint64_t pos = avio_tell(s->pb);
221 dts = avio_rb32(s->pb);
223 tmp = avio_rb32(s->pb);
224 av_dlog(s, "frame num %d\n", tmp);
226 tmp = avio_r8(s->pb); // major version
227 tmp2 = avio_r8(s->pb); // minor version
228 av_dlog(s, "version %d.%d\n", tmp, tmp2);
230 tmp = avio_rb16(s->pb); // unknown
231 av_dlog(s, "unknown %d\n", tmp);
234 tmp = avio_rb16(s->pb); // unknown
235 av_dlog(s, "unknown %d\n", tmp);
237 tmp = avio_rb16(s->pb); // unknown
238 av_dlog(s, "unknown %d\n", tmp);
240 tmp = avio_rb32(s->pb);
241 av_dlog(s, "width %d\n", tmp);
242 tmp = avio_rb32(s->pb);
243 av_dlog(s, "height %d\n", tmp);
245 tmp = avio_rb32(s->pb);
246 av_dlog(s, "metadata len %d\n", tmp);
248 tmp = atom->size - 8 - (avio_tell(s->pb) - pos);
251 ret = av_get_packet(s->pb, pkt, tmp);
253 av_log(s, AV_LOG_ERROR, "error reading video packet\n");
257 pkt->stream_index = 0;
259 if (st->codec->time_base.den)
260 pkt->duration = (uint64_t)st->time_base.den*
261 st->codec->time_base.num/st->codec->time_base.den;
262 av_dlog(s, "pkt dts %"PRId64" duration %d\n", pkt->dts, pkt->duration);
267 static int r3d_read_reda(AVFormatContext *s, AVPacket *pkt, Atom *atom)
269 AVStream *st = s->streams[1];
270 int av_unused tmp, tmp2;
272 uint64_t pos = avio_tell(s->pb);
276 dts = avio_rb32(s->pb);
278 st->codec->sample_rate = avio_rb32(s->pb);
280 samples = avio_rb32(s->pb);
282 tmp = avio_rb32(s->pb);
283 av_dlog(s, "packet num %d\n", tmp);
285 tmp = avio_rb16(s->pb); // unkown
286 av_dlog(s, "unknown %d\n", tmp);
288 tmp = avio_r8(s->pb); // major version
289 tmp2 = avio_r8(s->pb); // minor version
290 av_dlog(s, "version %d.%d\n", tmp, tmp2);
292 tmp = avio_rb32(s->pb); // unknown
293 av_dlog(s, "unknown %d\n", tmp);
295 size = atom->size - 8 - (avio_tell(s->pb) - pos);
298 ret = av_get_packet(s->pb, pkt, size);
300 av_log(s, AV_LOG_ERROR, "error reading audio packet\n");
304 pkt->stream_index = 1;
306 pkt->duration = av_rescale(samples, st->time_base.den, st->codec->sample_rate);
307 av_dlog(s, "pkt dts %"PRId64" duration %d samples %d sample rate %d\n",
308 pkt->dts, pkt->duration, samples, st->codec->sample_rate);
313 static int r3d_read_packet(AVFormatContext *s, AVPacket *pkt)
319 if (read_atom(s, &atom) < 0) {
324 case MKTAG('R','E','D','V'):
325 if (s->streams[0]->discard == AVDISCARD_ALL)
327 if (!(err = r3d_read_redv(s, pkt, &atom)))
330 case MKTAG('R','E','D','A'):
331 if (s->nb_streams < 2)
333 if (s->streams[1]->discard == AVDISCARD_ALL)
335 if (!(err = r3d_read_reda(s, pkt, &atom)))
340 avio_skip(s->pb, atom.size-8);
346 static int r3d_probe(AVProbeData *p)
348 if (AV_RL32(p->buf + 4) == MKTAG('R','E','D','1'))
349 return AVPROBE_SCORE_MAX;
353 static int r3d_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
355 AVStream *st = s->streams[0]; // video stream
356 R3DContext *r3d = s->priv_data;
359 if (!st->codec->time_base.num || !st->time_base.den)
362 frame_num = sample_time*st->codec->time_base.den/
363 ((int64_t)st->codec->time_base.num*st->time_base.den);
364 av_dlog(s, "seek frame num %d timestamp %"PRId64"\n",
365 frame_num, sample_time);
367 if (frame_num < r3d->video_offsets_count) {
368 if (avio_seek(s->pb, r3d->video_offsets_count, SEEK_SET) < 0)
371 av_log(s, AV_LOG_ERROR, "could not seek to frame %d\n", frame_num);
378 static int r3d_close(AVFormatContext *s)
380 R3DContext *r3d = s->priv_data;
382 av_freep(&r3d->video_offsets);
387 AVInputFormat ff_r3d_demuxer = {
389 .long_name = NULL_IF_CONFIG_SMALL("REDCODE R3D format"),
390 .priv_data_size = sizeof(R3DContext),
391 .read_probe = r3d_probe,
392 .read_header = r3d_read_header,
393 .read_packet = r3d_read_packet,
394 .read_close = r3d_close,
395 .read_seek = r3d_seek,