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);
63 return AVERROR(ENOMEM);
64 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
65 st->codec->codec_id = CODEC_ID_JPEG2000;
67 tmp = avio_r8(s->pb); // major version
68 tmp2 = avio_r8(s->pb); // minor version
69 av_dlog(s, "version %d.%d\n", tmp, tmp2);
71 tmp = avio_rb16(s->pb); // unknown
72 av_dlog(s, "unknown1 %d\n", tmp);
74 tmp = avio_rb32(s->pb);
75 avpriv_set_pts_info(st, 32, 1, tmp);
77 tmp = avio_rb32(s->pb); // filenum
78 av_dlog(s, "filenum %d\n", tmp);
80 avio_skip(s->pb, 32); // unknown
82 st->codec->width = avio_rb32(s->pb);
83 st->codec->height = avio_rb32(s->pb);
85 tmp = avio_rb16(s->pb); // unknown
86 av_dlog(s, "unknown2 %d\n", tmp);
88 framerate.num = avio_rb16(s->pb);
89 framerate.den = avio_rb16(s->pb);
90 if (framerate.num && framerate.den)
91 st->r_frame_rate = st->avg_frame_rate = framerate;
93 tmp = avio_r8(s->pb); // audio channels
94 av_dlog(s, "audio channels %d\n", tmp);
96 AVStream *ast = avformat_new_stream(s, NULL);
98 return AVERROR(ENOMEM);
99 ast->codec->codec_type = AVMEDIA_TYPE_AUDIO;
100 ast->codec->codec_id = CODEC_ID_PCM_S32BE;
101 ast->codec->channels = tmp;
102 avpriv_set_pts_info(ast, 32, 1, st->time_base.den);
105 avio_read(s->pb, filename, 257);
106 filename[sizeof(filename)-1] = 0;
107 av_dict_set(&st->metadata, "filename", filename, 0);
109 av_dlog(s, "filename %s\n", filename);
110 av_dlog(s, "resolution %dx%d\n", st->codec->width, st->codec->height);
111 av_dlog(s, "timescale %d\n", st->time_base.den);
112 av_dlog(s, "frame rate %d/%d\n",
113 framerate.num, framerate.den);
118 static int r3d_read_rdvo(AVFormatContext *s, Atom *atom)
120 R3DContext *r3d = s->priv_data;
121 AVStream *st = s->streams[0];
124 r3d->video_offsets_count = (atom->size - 8) / 4;
125 r3d->video_offsets = av_malloc(atom->size);
126 if (!r3d->video_offsets)
127 return AVERROR(ENOMEM);
129 for (i = 0; i < r3d->video_offsets_count; i++) {
130 r3d->video_offsets[i] = avio_rb32(s->pb);
131 if (!r3d->video_offsets[i]) {
132 r3d->video_offsets_count = i;
135 av_dlog(s, "video offset %d: %#x\n", i, r3d->video_offsets[i]);
138 if (st->r_frame_rate.num)
139 st->duration = av_rescale_q(r3d->video_offsets_count,
140 (AVRational){st->r_frame_rate.den,
141 st->r_frame_rate.num},
143 av_dlog(s, "duration %"PRId64"\n", st->duration);
148 static void r3d_read_reos(AVFormatContext *s)
150 R3DContext *r3d = s->priv_data;
153 r3d->rdvo_offset = avio_rb32(s->pb);
154 avio_rb32(s->pb); // rdvs offset
155 avio_rb32(s->pb); // rdao offset
156 avio_rb32(s->pb); // rdas offset
158 tmp = avio_rb32(s->pb);
159 av_dlog(s, "num video chunks %d\n", tmp);
161 tmp = avio_rb32(s->pb);
162 av_dlog(s, "num audio chunks %d\n", tmp);
164 avio_skip(s->pb, 6*4);
167 static int r3d_read_header(AVFormatContext *s)
169 R3DContext *r3d = s->priv_data;
173 if (read_atom(s, &atom) < 0) {
174 av_log(s, AV_LOG_ERROR, "error reading atom\n");
177 if (atom.tag == MKTAG('R','E','D','1')) {
178 if ((ret = r3d_read_red1(s)) < 0) {
179 av_log(s, AV_LOG_ERROR, "error parsing 'red1' atom\n");
183 av_log(s, AV_LOG_ERROR, "could not find 'red1' atom\n");
187 s->data_offset = avio_tell(s->pb);
188 av_dlog(s, "data offset %#"PRIx64"\n", s->data_offset);
189 if (!s->pb->seekable)
191 // find REOB/REOF/REOS to load index
192 avio_seek(s->pb, avio_size(s->pb)-48-8, SEEK_SET);
193 if (read_atom(s, &atom) < 0)
194 av_log(s, AV_LOG_ERROR, "error reading end atom\n");
196 if (atom.tag != MKTAG('R','E','O','B') &&
197 atom.tag != MKTAG('R','E','O','F') &&
198 atom.tag != MKTAG('R','E','O','S'))
203 if (r3d->rdvo_offset) {
204 avio_seek(s->pb, r3d->rdvo_offset, SEEK_SET);
205 if (read_atom(s, &atom) < 0)
206 av_log(s, AV_LOG_ERROR, "error reading 'rdvo' atom\n");
207 if (atom.tag == MKTAG('R','D','V','O')) {
208 if (r3d_read_rdvo(s, &atom) < 0)
209 av_log(s, AV_LOG_ERROR, "error parsing 'rdvo' atom\n");
214 avio_seek(s->pb, s->data_offset, SEEK_SET);
218 static int r3d_read_redv(AVFormatContext *s, AVPacket *pkt, Atom *atom)
220 AVStream *st = s->streams[0];
223 uint64_t pos = avio_tell(s->pb);
227 dts = avio_rb32(s->pb);
229 tmp = avio_rb32(s->pb);
230 av_dlog(s, "frame num %d\n", tmp);
232 tmp = avio_r8(s->pb); // major version
233 tmp2 = avio_r8(s->pb); // minor version
234 av_dlog(s, "version %d.%d\n", tmp, tmp2);
236 tmp = avio_rb16(s->pb); // unknown
237 av_dlog(s, "unknown %d\n", tmp);
240 tmp = avio_rb16(s->pb); // unknown
241 av_dlog(s, "unknown %d\n", tmp);
243 tmp = avio_rb16(s->pb); // unknown
244 av_dlog(s, "unknown %d\n", tmp);
246 tmp = avio_rb32(s->pb);
247 av_dlog(s, "width %d\n", tmp);
248 tmp = avio_rb32(s->pb);
249 av_dlog(s, "height %d\n", tmp);
251 tmp = avio_rb32(s->pb);
252 av_dlog(s, "metadata len %d\n", tmp);
254 tmp = atom->size - 8 - (avio_tell(s->pb) - pos);
257 ret = av_get_packet(s->pb, pkt, tmp);
259 av_log(s, AV_LOG_ERROR, "error reading video packet\n");
263 pkt->stream_index = 0;
265 if (st->r_frame_rate.num)
266 pkt->duration = (uint64_t)st->time_base.den*
267 st->r_frame_rate.den/st->r_frame_rate.num;
268 av_dlog(s, "pkt dts %"PRId64" duration %d\n", pkt->dts, pkt->duration);
273 static int r3d_read_reda(AVFormatContext *s, AVPacket *pkt, Atom *atom)
275 AVStream *st = s->streams[1];
276 int av_unused tmp, tmp2;
278 uint64_t pos = avio_tell(s->pb);
282 dts = avio_rb32(s->pb);
284 st->codec->sample_rate = avio_rb32(s->pb);
286 samples = avio_rb32(s->pb);
288 tmp = avio_rb32(s->pb);
289 av_dlog(s, "packet num %d\n", tmp);
291 tmp = avio_rb16(s->pb); // unknown
292 av_dlog(s, "unknown %d\n", tmp);
294 tmp = avio_r8(s->pb); // major version
295 tmp2 = avio_r8(s->pb); // minor version
296 av_dlog(s, "version %d.%d\n", tmp, tmp2);
298 tmp = avio_rb32(s->pb); // unknown
299 av_dlog(s, "unknown %d\n", tmp);
301 size = atom->size - 8 - (avio_tell(s->pb) - pos);
304 ret = av_get_packet(s->pb, pkt, size);
306 av_log(s, AV_LOG_ERROR, "error reading audio packet\n");
310 pkt->stream_index = 1;
312 pkt->duration = av_rescale(samples, st->time_base.den, st->codec->sample_rate);
313 av_dlog(s, "pkt dts %"PRId64" duration %d samples %d sample rate %d\n",
314 pkt->dts, pkt->duration, samples, st->codec->sample_rate);
319 static int r3d_read_packet(AVFormatContext *s, AVPacket *pkt)
325 if (read_atom(s, &atom) < 0) {
330 case MKTAG('R','E','D','V'):
331 if (s->streams[0]->discard == AVDISCARD_ALL)
333 if (!(err = r3d_read_redv(s, pkt, &atom)))
336 case MKTAG('R','E','D','A'):
337 if (s->nb_streams < 2)
339 if (s->streams[1]->discard == AVDISCARD_ALL)
341 if (!(err = r3d_read_reda(s, pkt, &atom)))
346 avio_skip(s->pb, atom.size-8);
352 static int r3d_probe(AVProbeData *p)
354 if (AV_RL32(p->buf + 4) == MKTAG('R','E','D','1'))
355 return AVPROBE_SCORE_MAX;
359 static int r3d_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
361 AVStream *st = s->streams[0]; // video stream
362 R3DContext *r3d = s->priv_data;
365 if (!st->r_frame_rate.num)
368 frame_num = av_rescale_q(sample_time, st->time_base,
369 (AVRational){st->r_frame_rate.den, st->r_frame_rate.num});
370 av_dlog(s, "seek frame num %d timestamp %"PRId64"\n",
371 frame_num, sample_time);
373 if (frame_num < r3d->video_offsets_count) {
374 if (avio_seek(s->pb, r3d->video_offsets_count, SEEK_SET) < 0)
377 av_log(s, AV_LOG_ERROR, "could not seek to frame %d\n", frame_num);
384 static int r3d_close(AVFormatContext *s)
386 R3DContext *r3d = s->priv_data;
388 av_freep(&r3d->video_offsets);
393 AVInputFormat ff_r3d_demuxer = {
395 .long_name = NULL_IF_CONFIG_SMALL("REDCODE R3D format"),
396 .priv_data_size = sizeof(R3DContext),
397 .read_probe = r3d_probe,
398 .read_header = r3d_read_header,
399 .read_packet = r3d_read_packet,
400 .read_close = r3d_close,
401 .read_seek = r3d_seek,