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"
28 unsigned video_offsets_count;
29 unsigned *video_offsets;
39 static int read_atom(AVFormatContext *s, Atom *atom)
41 atom->offset = avio_tell(s->pb);
42 atom->size = avio_rb32(s->pb);
45 atom->tag = avio_rl32(s->pb);
46 av_dlog(s, "atom %u %.4s offset %#"PRIx64"\n",
47 atom->size, (char*)&atom->tag, atom->offset);
51 static int r3d_read_red1(AVFormatContext *s)
53 AVStream *st = av_new_stream(s, 0);
59 return AVERROR(ENOMEM);
60 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
61 st->codec->codec_id = CODEC_ID_JPEG2000;
63 tmp = avio_r8(s->pb); // major version
64 tmp2 = avio_r8(s->pb); // minor version
65 av_dlog(s, "version %d.%d\n", tmp, tmp2);
67 tmp = avio_rb16(s->pb); // unknown
68 av_dlog(s, "unknown1 %d\n", tmp);
70 tmp = avio_rb32(s->pb);
71 av_set_pts_info(st, 32, 1, tmp);
73 tmp = avio_rb32(s->pb); // filenum
74 av_dlog(s, "filenum %d\n", tmp);
76 avio_skip(s->pb, 32); // unknown
78 st->codec->width = avio_rb32(s->pb);
79 st->codec->height = avio_rb32(s->pb);
81 tmp = avio_rb16(s->pb); // unknown
82 av_dlog(s, "unknown2 %d\n", tmp);
84 st->codec->time_base.den = avio_rb16(s->pb);
85 st->codec->time_base.num = avio_rb16(s->pb);
87 tmp = avio_r8(s->pb); // audio channels
88 av_dlog(s, "audio channels %d\n", tmp);
90 AVStream *ast = av_new_stream(s, 1);
92 return AVERROR(ENOMEM);
93 ast->codec->codec_type = AVMEDIA_TYPE_AUDIO;
94 ast->codec->codec_id = CODEC_ID_PCM_S32BE;
95 ast->codec->channels = tmp;
96 av_set_pts_info(ast, 32, 1, st->time_base.den);
99 avio_read(s->pb, filename, 257);
100 filename[sizeof(filename)-1] = 0;
101 av_metadata_set2(&st->metadata, "filename", filename, 0);
103 av_dlog(s, "filename %s\n", filename);
104 av_dlog(s, "resolution %dx%d\n", st->codec->width, st->codec->height);
105 av_dlog(s, "timescale %d\n", st->time_base.den);
106 av_dlog(s, "frame rate %d/%d\n",
107 st->codec->time_base.num, st->codec->time_base.den);
112 static int r3d_read_rdvo(AVFormatContext *s, Atom *atom)
114 R3DContext *r3d = s->priv_data;
115 AVStream *st = s->streams[0];
118 r3d->video_offsets_count = (atom->size - 8) / 4;
119 r3d->video_offsets = av_malloc(atom->size);
120 if (!r3d->video_offsets)
121 return AVERROR(ENOMEM);
123 for (i = 0; i < r3d->video_offsets_count; i++) {
124 r3d->video_offsets[i] = avio_rb32(s->pb);
125 if (!r3d->video_offsets[i]) {
126 r3d->video_offsets_count = i;
129 av_dlog(s, "video offset %d: %#x\n", i, r3d->video_offsets[i]);
132 if (st->codec->time_base.den)
133 st->duration = (uint64_t)r3d->video_offsets_count*
134 st->time_base.den*st->codec->time_base.num/st->codec->time_base.den;
135 av_dlog(s, "duration %"PRId64"\n", st->duration);
140 static void r3d_read_reos(AVFormatContext *s)
142 R3DContext *r3d = s->priv_data;
145 r3d->rdvo_offset = avio_rb32(s->pb);
146 avio_rb32(s->pb); // rdvs offset
147 avio_rb32(s->pb); // rdao offset
148 avio_rb32(s->pb); // rdas offset
150 tmp = avio_rb32(s->pb);
151 av_dlog(s, "num video chunks %d\n", tmp);
153 tmp = avio_rb32(s->pb);
154 av_dlog(s, "num audio chunks %d\n", tmp);
156 avio_skip(s->pb, 6*4);
159 static int r3d_read_header(AVFormatContext *s, AVFormatParameters *ap)
161 R3DContext *r3d = s->priv_data;
165 if (read_atom(s, &atom) < 0) {
166 av_log(s, AV_LOG_ERROR, "error reading atom\n");
169 if (atom.tag == MKTAG('R','E','D','1')) {
170 if ((ret = r3d_read_red1(s)) < 0) {
171 av_log(s, AV_LOG_ERROR, "error parsing 'red1' atom\n");
175 av_log(s, AV_LOG_ERROR, "could not find 'red1' atom\n");
179 s->data_offset = avio_tell(s->pb);
180 av_dlog(s, "data offset %#"PRIx64"\n", s->data_offset);
181 if (!s->pb->seekable)
183 // find REOB/REOF/REOS to load index
184 avio_seek(s->pb, avio_size(s->pb)-48-8, SEEK_SET);
185 if (read_atom(s, &atom) < 0)
186 av_log(s, AV_LOG_ERROR, "error reading end atom\n");
188 if (atom.tag != MKTAG('R','E','O','B') &&
189 atom.tag != MKTAG('R','E','O','F') &&
190 atom.tag != MKTAG('R','E','O','S'))
195 if (r3d->rdvo_offset) {
196 avio_seek(s->pb, r3d->rdvo_offset, SEEK_SET);
197 if (read_atom(s, &atom) < 0)
198 av_log(s, AV_LOG_ERROR, "error reading 'rdvo' atom\n");
199 if (atom.tag == MKTAG('R','D','V','O')) {
200 if (r3d_read_rdvo(s, &atom) < 0)
201 av_log(s, AV_LOG_ERROR, "error parsing 'rdvo' atom\n");
206 avio_seek(s->pb, s->data_offset, SEEK_SET);
210 static int r3d_read_redv(AVFormatContext *s, AVPacket *pkt, Atom *atom)
212 AVStream *st = s->streams[0];
215 uint64_t pos = avio_tell(s->pb);
219 dts = avio_rb32(s->pb);
221 tmp = avio_rb32(s->pb);
222 av_dlog(s, "frame num %d\n", tmp);
224 tmp = avio_r8(s->pb); // major version
225 tmp2 = avio_r8(s->pb); // minor version
226 av_dlog(s, "version %d.%d\n", tmp, tmp2);
228 tmp = avio_rb16(s->pb); // unknown
229 av_dlog(s, "unknown %d\n", tmp);
232 tmp = avio_rb16(s->pb); // unknown
233 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_rb32(s->pb);
239 av_dlog(s, "width %d\n", tmp);
240 tmp = avio_rb32(s->pb);
241 av_dlog(s, "height %d\n", tmp);
243 tmp = avio_rb32(s->pb);
244 av_dlog(s, "metadata len %d\n", tmp);
246 tmp = atom->size - 8 - (avio_tell(s->pb) - pos);
249 ret = av_get_packet(s->pb, pkt, tmp);
251 av_log(s, AV_LOG_ERROR, "error reading video packet\n");
255 pkt->stream_index = 0;
257 if (st->codec->time_base.den)
258 pkt->duration = (uint64_t)st->time_base.den*
259 st->codec->time_base.num/st->codec->time_base.den;
260 av_dlog(s, "pkt dts %"PRId64" duration %d\n", pkt->dts, pkt->duration);
265 static int r3d_read_reda(AVFormatContext *s, AVPacket *pkt, Atom *atom)
267 AVStream *st = s->streams[1];
268 int av_unused tmp, tmp2;
270 uint64_t pos = avio_tell(s->pb);
274 dts = avio_rb32(s->pb);
276 st->codec->sample_rate = avio_rb32(s->pb);
278 samples = avio_rb32(s->pb);
280 tmp = avio_rb32(s->pb);
281 av_dlog(s, "packet num %d\n", tmp);
283 tmp = avio_rb16(s->pb); // unkown
284 av_dlog(s, "unknown %d\n", tmp);
286 tmp = avio_r8(s->pb); // major version
287 tmp2 = avio_r8(s->pb); // minor version
288 av_dlog(s, "version %d.%d\n", tmp, tmp2);
290 tmp = avio_rb32(s->pb); // unknown
291 av_dlog(s, "unknown %d\n", tmp);
293 size = atom->size - 8 - (avio_tell(s->pb) - pos);
296 ret = av_get_packet(s->pb, pkt, size);
298 av_log(s, AV_LOG_ERROR, "error reading audio packet\n");
302 pkt->stream_index = 1;
304 pkt->duration = av_rescale(samples, st->time_base.den, st->codec->sample_rate);
305 av_dlog(s, "pkt dts %"PRId64" duration %d samples %d sample rate %d\n",
306 pkt->dts, pkt->duration, samples, st->codec->sample_rate);
311 static int r3d_read_packet(AVFormatContext *s, AVPacket *pkt)
317 if (read_atom(s, &atom) < 0) {
322 case MKTAG('R','E','D','V'):
323 if (s->streams[0]->discard == AVDISCARD_ALL)
325 if (!(err = r3d_read_redv(s, pkt, &atom)))
328 case MKTAG('R','E','D','A'):
329 if (s->nb_streams < 2)
331 if (s->streams[1]->discard == AVDISCARD_ALL)
333 if (!(err = r3d_read_reda(s, pkt, &atom)))
338 avio_skip(s->pb, atom.size-8);
344 static int r3d_probe(AVProbeData *p)
346 if (AV_RL32(p->buf + 4) == MKTAG('R','E','D','1'))
347 return AVPROBE_SCORE_MAX;
351 static int r3d_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
353 AVStream *st = s->streams[0]; // video stream
354 R3DContext *r3d = s->priv_data;
357 if (!st->codec->time_base.num || !st->time_base.den)
360 frame_num = sample_time*st->codec->time_base.den/
361 ((int64_t)st->codec->time_base.num*st->time_base.den);
362 av_dlog(s, "seek frame num %d timestamp %"PRId64"\n",
363 frame_num, sample_time);
365 if (frame_num < r3d->video_offsets_count) {
366 avio_seek(s->pb, r3d->video_offsets_count, SEEK_SET);
368 av_log(s, AV_LOG_ERROR, "could not seek to frame %d\n", frame_num);
375 static int r3d_close(AVFormatContext *s)
377 R3DContext *r3d = s->priv_data;
379 av_freep(&r3d->video_offsets);
384 AVInputFormat ff_r3d_demuxer = {
386 NULL_IF_CONFIG_SMALL("REDCODE R3D format"),