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"
29 unsigned video_offsets_count;
30 unsigned *video_offsets;
40 static int read_atom(AVFormatContext *s, Atom *atom)
42 atom->offset = avio_tell(s->pb);
43 atom->size = avio_rb32(s->pb);
46 atom->tag = avio_rl32(s->pb);
47 av_dlog(s, "atom %u %.4s offset %#"PRIx64"\n",
48 atom->size, (char*)&atom->tag, atom->offset);
52 static int r3d_read_red1(AVFormatContext *s)
54 AVStream *st = av_new_stream(s, 0);
60 return AVERROR(ENOMEM);
61 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
62 st->codec->codec_id = CODEC_ID_JPEG2000;
64 tmp = avio_r8(s->pb); // major version
65 tmp2 = avio_r8(s->pb); // minor version
66 av_dlog(s, "version %d.%d\n", tmp, tmp2);
68 tmp = avio_rb16(s->pb); // unknown
69 av_dlog(s, "unknown1 %d\n", tmp);
71 tmp = avio_rb32(s->pb);
72 av_set_pts_info(st, 32, 1, tmp);
74 tmp = avio_rb32(s->pb); // filenum
75 av_dlog(s, "filenum %d\n", tmp);
77 avio_skip(s->pb, 32); // unknown
79 st->codec->width = avio_rb32(s->pb);
80 st->codec->height = avio_rb32(s->pb);
82 tmp = avio_rb16(s->pb); // unknown
83 av_dlog(s, "unknown2 %d\n", tmp);
85 st->codec->time_base.den = avio_rb16(s->pb);
86 st->codec->time_base.num = avio_rb16(s->pb);
88 tmp = avio_r8(s->pb); // audio channels
89 av_dlog(s, "audio channels %d\n", tmp);
91 AVStream *ast = av_new_stream(s, 1);
93 return AVERROR(ENOMEM);
94 ast->codec->codec_type = AVMEDIA_TYPE_AUDIO;
95 ast->codec->codec_id = CODEC_ID_PCM_S32BE;
96 ast->codec->channels = tmp;
97 av_set_pts_info(ast, 32, 1, st->time_base.den);
100 avio_read(s->pb, filename, 257);
101 filename[sizeof(filename)-1] = 0;
102 av_dict_set(&st->metadata, "filename", filename, 0);
104 av_dlog(s, "filename %s\n", filename);
105 av_dlog(s, "resolution %dx%d\n", st->codec->width, st->codec->height);
106 av_dlog(s, "timescale %d\n", st->time_base.den);
107 av_dlog(s, "frame rate %d/%d\n",
108 st->codec->time_base.num, st->codec->time_base.den);
113 static int r3d_read_rdvo(AVFormatContext *s, Atom *atom)
115 R3DContext *r3d = s->priv_data;
116 AVStream *st = s->streams[0];
119 r3d->video_offsets_count = (atom->size - 8) / 4;
120 r3d->video_offsets = av_malloc(atom->size);
121 if (!r3d->video_offsets)
122 return AVERROR(ENOMEM);
124 for (i = 0; i < r3d->video_offsets_count; i++) {
125 r3d->video_offsets[i] = avio_rb32(s->pb);
126 if (!r3d->video_offsets[i]) {
127 r3d->video_offsets_count = i;
130 av_dlog(s, "video offset %d: %#x\n", i, r3d->video_offsets[i]);
133 if (st->codec->time_base.den)
134 st->duration = (uint64_t)r3d->video_offsets_count*
135 st->time_base.den*st->codec->time_base.num/st->codec->time_base.den;
136 av_dlog(s, "duration %"PRId64"\n", st->duration);
141 static void r3d_read_reos(AVFormatContext *s)
143 R3DContext *r3d = s->priv_data;
146 r3d->rdvo_offset = avio_rb32(s->pb);
147 avio_rb32(s->pb); // rdvs offset
148 avio_rb32(s->pb); // rdao offset
149 avio_rb32(s->pb); // rdas offset
151 tmp = avio_rb32(s->pb);
152 av_dlog(s, "num video chunks %d\n", tmp);
154 tmp = avio_rb32(s->pb);
155 av_dlog(s, "num audio chunks %d\n", tmp);
157 avio_skip(s->pb, 6*4);
160 static int r3d_read_header(AVFormatContext *s, AVFormatParameters *ap)
162 R3DContext *r3d = s->priv_data;
166 if (read_atom(s, &atom) < 0) {
167 av_log(s, AV_LOG_ERROR, "error reading atom\n");
170 if (atom.tag == MKTAG('R','E','D','1')) {
171 if ((ret = r3d_read_red1(s)) < 0) {
172 av_log(s, AV_LOG_ERROR, "error parsing 'red1' atom\n");
176 av_log(s, AV_LOG_ERROR, "could not find 'red1' atom\n");
180 s->data_offset = avio_tell(s->pb);
181 av_dlog(s, "data offset %#"PRIx64"\n", s->data_offset);
182 if (!s->pb->seekable)
184 // find REOB/REOF/REOS to load index
185 avio_seek(s->pb, avio_size(s->pb)-48-8, SEEK_SET);
186 if (read_atom(s, &atom) < 0)
187 av_log(s, AV_LOG_ERROR, "error reading end atom\n");
189 if (atom.tag != MKTAG('R','E','O','B') &&
190 atom.tag != MKTAG('R','E','O','F') &&
191 atom.tag != MKTAG('R','E','O','S'))
196 if (r3d->rdvo_offset) {
197 avio_seek(s->pb, r3d->rdvo_offset, SEEK_SET);
198 if (read_atom(s, &atom) < 0)
199 av_log(s, AV_LOG_ERROR, "error reading 'rdvo' atom\n");
200 if (atom.tag == MKTAG('R','D','V','O')) {
201 if (r3d_read_rdvo(s, &atom) < 0)
202 av_log(s, AV_LOG_ERROR, "error parsing 'rdvo' atom\n");
207 avio_seek(s->pb, s->data_offset, SEEK_SET);
211 static int r3d_read_redv(AVFormatContext *s, AVPacket *pkt, Atom *atom)
213 AVStream *st = s->streams[0];
216 uint64_t pos = avio_tell(s->pb);
220 dts = avio_rb32(s->pb);
222 tmp = avio_rb32(s->pb);
223 av_dlog(s, "frame num %d\n", tmp);
225 tmp = avio_r8(s->pb); // major version
226 tmp2 = avio_r8(s->pb); // minor version
227 av_dlog(s, "version %d.%d\n", tmp, tmp2);
229 tmp = avio_rb16(s->pb); // unknown
230 av_dlog(s, "unknown %d\n", tmp);
233 tmp = avio_rb16(s->pb); // unknown
234 av_dlog(s, "unknown %d\n", tmp);
236 tmp = avio_rb16(s->pb); // unknown
237 av_dlog(s, "unknown %d\n", tmp);
239 tmp = avio_rb32(s->pb);
240 av_dlog(s, "width %d\n", tmp);
241 tmp = avio_rb32(s->pb);
242 av_dlog(s, "height %d\n", tmp);
244 tmp = avio_rb32(s->pb);
245 av_dlog(s, "metadata len %d\n", tmp);
247 tmp = atom->size - 8 - (avio_tell(s->pb) - pos);
250 ret = av_get_packet(s->pb, pkt, tmp);
252 av_log(s, AV_LOG_ERROR, "error reading video packet\n");
256 pkt->stream_index = 0;
258 if (st->codec->time_base.den)
259 pkt->duration = (uint64_t)st->time_base.den*
260 st->codec->time_base.num/st->codec->time_base.den;
261 av_dlog(s, "pkt dts %"PRId64" duration %d\n", pkt->dts, pkt->duration);
266 static int r3d_read_reda(AVFormatContext *s, AVPacket *pkt, Atom *atom)
268 AVStream *st = s->streams[1];
269 int av_unused tmp, tmp2;
271 uint64_t pos = avio_tell(s->pb);
275 dts = avio_rb32(s->pb);
277 st->codec->sample_rate = avio_rb32(s->pb);
279 samples = avio_rb32(s->pb);
281 tmp = avio_rb32(s->pb);
282 av_dlog(s, "packet num %d\n", tmp);
284 tmp = avio_rb16(s->pb); // unkown
285 av_dlog(s, "unknown %d\n", tmp);
287 tmp = avio_r8(s->pb); // major version
288 tmp2 = avio_r8(s->pb); // minor version
289 av_dlog(s, "version %d.%d\n", tmp, tmp2);
291 tmp = avio_rb32(s->pb); // unknown
292 av_dlog(s, "unknown %d\n", tmp);
294 size = atom->size - 8 - (avio_tell(s->pb) - pos);
297 ret = av_get_packet(s->pb, pkt, size);
299 av_log(s, AV_LOG_ERROR, "error reading audio packet\n");
303 pkt->stream_index = 1;
305 pkt->duration = av_rescale(samples, st->time_base.den, st->codec->sample_rate);
306 av_dlog(s, "pkt dts %"PRId64" duration %d samples %d sample rate %d\n",
307 pkt->dts, pkt->duration, samples, st->codec->sample_rate);
312 static int r3d_read_packet(AVFormatContext *s, AVPacket *pkt)
318 if (read_atom(s, &atom) < 0) {
323 case MKTAG('R','E','D','V'):
324 if (s->streams[0]->discard == AVDISCARD_ALL)
326 if (!(err = r3d_read_redv(s, pkt, &atom)))
329 case MKTAG('R','E','D','A'):
330 if (s->nb_streams < 2)
332 if (s->streams[1]->discard == AVDISCARD_ALL)
334 if (!(err = r3d_read_reda(s, pkt, &atom)))
339 avio_skip(s->pb, atom.size-8);
345 static int r3d_probe(AVProbeData *p)
347 if (AV_RL32(p->buf + 4) == MKTAG('R','E','D','1'))
348 return AVPROBE_SCORE_MAX;
352 static int r3d_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
354 AVStream *st = s->streams[0]; // video stream
355 R3DContext *r3d = s->priv_data;
358 if (!st->codec->time_base.num || !st->time_base.den)
361 frame_num = sample_time*st->codec->time_base.den/
362 ((int64_t)st->codec->time_base.num*st->time_base.den);
363 av_dlog(s, "seek frame num %d timestamp %"PRId64"\n",
364 frame_num, sample_time);
366 if (frame_num < r3d->video_offsets_count) {
367 avio_seek(s->pb, r3d->video_offsets_count, SEEK_SET);
369 av_log(s, AV_LOG_ERROR, "could not seek to frame %d\n", frame_num);
376 static int r3d_close(AVFormatContext *s)
378 R3DContext *r3d = s->priv_data;
380 av_freep(&r3d->video_offsets);
385 AVInputFormat ff_r3d_demuxer = {
387 NULL_IF_CONFIG_SMALL("REDCODE R3D format"),