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
22 #include "libavutil/intreadwrite.h"
23 #include "libavutil/dict.h"
24 #include "libavutil/mathematics.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 = avformat_new_stream(s, NULL);
61 return AVERROR(ENOMEM);
62 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
63 st->codec->codec_id = AV_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 avpriv_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 framerate.num = avio_rb16(s->pb);
87 framerate.den = avio_rb16(s->pb);
88 if (framerate.num && framerate.den) {
89 #if FF_API_R_FRAME_RATE
92 st->avg_frame_rate = framerate;
95 tmp = avio_r8(s->pb); // audio channels
96 av_dlog(s, "audio channels %d\n", tmp);
98 AVStream *ast = avformat_new_stream(s, NULL);
100 return AVERROR(ENOMEM);
101 ast->codec->codec_type = AVMEDIA_TYPE_AUDIO;
102 ast->codec->codec_id = AV_CODEC_ID_PCM_S32BE;
103 ast->codec->channels = tmp;
104 avpriv_set_pts_info(ast, 32, 1, st->time_base.den);
107 avio_read(s->pb, filename, 257);
108 filename[sizeof(filename)-1] = 0;
109 av_dict_set(&st->metadata, "filename", filename, 0);
111 av_dlog(s, "filename %s\n", filename);
112 av_dlog(s, "resolution %dx%d\n", st->codec->width, st->codec->height);
113 av_dlog(s, "timescale %d\n", st->time_base.den);
114 av_dlog(s, "frame rate %d/%d\n",
115 framerate.num, framerate.den);
120 static int r3d_read_rdvo(AVFormatContext *s, Atom *atom)
122 R3DContext *r3d = s->priv_data;
123 AVStream *st = s->streams[0];
126 r3d->video_offsets_count = (atom->size - 8) / 4;
127 r3d->video_offsets = av_malloc(atom->size);
128 if (!r3d->video_offsets)
129 return AVERROR(ENOMEM);
131 for (i = 0; i < r3d->video_offsets_count; i++) {
132 r3d->video_offsets[i] = avio_rb32(s->pb);
133 if (!r3d->video_offsets[i]) {
134 r3d->video_offsets_count = i;
137 av_dlog(s, "video offset %d: %#x\n", i, r3d->video_offsets[i]);
140 if (st->avg_frame_rate.num)
141 st->duration = av_rescale_q(r3d->video_offsets_count,
142 av_inv_q(st->avg_frame_rate),
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);
286 if (st->codec->sample_rate < 0) {
287 av_log(s, AV_LOG_ERROR, "negative sample rate\n");
288 return AVERROR_INVALIDDATA;
291 samples = avio_rb32(s->pb);
293 tmp = avio_rb32(s->pb);
294 av_dlog(s, "packet num %d\n", tmp);
296 tmp = avio_rb16(s->pb); // unknown
297 av_dlog(s, "unknown %d\n", tmp);
299 tmp = avio_r8(s->pb); // major version
300 tmp2 = avio_r8(s->pb); // minor version
301 av_dlog(s, "version %d.%d\n", tmp, tmp2);
303 tmp = avio_rb32(s->pb); // unknown
304 av_dlog(s, "unknown %d\n", tmp);
306 size = atom->size - 8 - (avio_tell(s->pb) - pos);
309 ret = av_get_packet(s->pb, pkt, size);
311 av_log(s, AV_LOG_ERROR, "error reading audio packet\n");
315 pkt->stream_index = 1;
317 if (st->codec->sample_rate)
318 pkt->duration = av_rescale(samples, st->time_base.den, st->codec->sample_rate);
319 av_dlog(s, "pkt dts %"PRId64" duration %d samples %d sample rate %d\n",
320 pkt->dts, pkt->duration, samples, st->codec->sample_rate);
325 static int r3d_read_packet(AVFormatContext *s, AVPacket *pkt)
331 if (read_atom(s, &atom) < 0) {
336 case MKTAG('R','E','D','V'):
337 if (s->streams[0]->discard == AVDISCARD_ALL)
339 if (!(err = r3d_read_redv(s, pkt, &atom)))
342 case MKTAG('R','E','D','A'):
343 if (s->nb_streams < 2)
345 if (s->streams[1]->discard == AVDISCARD_ALL)
347 if (!(err = r3d_read_reda(s, pkt, &atom)))
352 avio_skip(s->pb, atom.size-8);
358 static int r3d_probe(AVProbeData *p)
360 if (AV_RL32(p->buf + 4) == MKTAG('R','E','D','1'))
361 return AVPROBE_SCORE_MAX;
365 static int r3d_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
367 AVStream *st = s->streams[0]; // video stream
368 R3DContext *r3d = s->priv_data;
371 if (!st->avg_frame_rate.num)
374 frame_num = av_rescale_q(sample_time, st->time_base,
375 av_inv_q(st->avg_frame_rate));
376 av_dlog(s, "seek frame num %d timestamp %"PRId64"\n",
377 frame_num, sample_time);
379 if (frame_num < r3d->video_offsets_count) {
380 if (avio_seek(s->pb, r3d->video_offsets_count, SEEK_SET) < 0)
383 av_log(s, AV_LOG_ERROR, "could not seek to frame %d\n", frame_num);
390 static int r3d_close(AVFormatContext *s)
392 R3DContext *r3d = s->priv_data;
394 av_freep(&r3d->video_offsets);
399 AVInputFormat ff_r3d_demuxer = {
401 .long_name = NULL_IF_CONFIG_SMALL("REDCODE R3D"),
402 .priv_data_size = sizeof(R3DContext),
403 .read_probe = r3d_probe,
404 .read_header = r3d_read_header,
405 .read_packet = r3d_read_packet,
406 .read_close = r3d_close,
407 .read_seek = r3d_seek,