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"
28 typedef struct R3DContext {
29 unsigned video_offsets_count;
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_log(s, AV_LOG_TRACE, "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);
56 R3DContext *r3d = s->priv_data;
63 return AVERROR(ENOMEM);
64 st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
65 st->codecpar->codec_id = AV_CODEC_ID_JPEG2000;
67 tmp = avio_r8(s->pb); // major version
68 tmp2 = avio_r8(s->pb); // minor version
69 av_log(s, AV_LOG_TRACE, "version %d.%d\n", tmp, tmp2);
71 tmp = avio_rb16(s->pb); // unknown
72 av_log(s, AV_LOG_TRACE, "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_log(s, AV_LOG_TRACE, "filenum %d\n", tmp);
80 avio_skip(s->pb, 32); // unknown
82 st->codecpar->width = avio_rb32(s->pb);
83 st->codecpar->height = avio_rb32(s->pb);
85 tmp = avio_rb16(s->pb); // unknown
86 av_log(s, AV_LOG_TRACE, "unknown2 %d\n", tmp);
88 framerate.num = avio_rb16(s->pb);
89 framerate.den = avio_rb16(s->pb);
90 if (framerate.num > 0 && framerate.den > 0) {
91 #if FF_API_R_FRAME_RATE
94 st->avg_frame_rate = framerate;
97 r3d->audio_channels = avio_r8(s->pb); // audio channels
98 av_log(s, AV_LOG_TRACE, "audio channels %d\n", tmp);
100 avio_read(s->pb, filename, 257);
101 filename[sizeof(filename)-1] = 0;
102 av_dict_set(&st->metadata, "filename", filename, 0);
104 av_log(s, AV_LOG_TRACE, "filename %s\n", filename);
105 av_log(s, AV_LOG_TRACE, "resolution %dx%d\n", st->codecpar->width, st->codecpar->height);
106 av_log(s, AV_LOG_TRACE, "timescale %d\n", st->time_base.den);
107 av_log(s, AV_LOG_TRACE, "frame rate %d/%d\n",
108 framerate.num, framerate.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;
121 for (i = 0; i < r3d->video_offsets_count; i++) {
122 unsigned video_offset = avio_rb32(s->pb);
124 r3d->video_offsets_count = i;
127 av_log(s, AV_LOG_TRACE, "video offset %d: %#x\n", i, video_offset);
130 if (st->avg_frame_rate.num)
131 st->duration = av_rescale_q(r3d->video_offsets_count,
132 av_inv_q(st->avg_frame_rate),
134 av_log(s, AV_LOG_TRACE, "duration %"PRId64"\n", st->duration);
139 static void r3d_read_reos(AVFormatContext *s)
141 R3DContext *r3d = s->priv_data;
144 r3d->rdvo_offset = avio_rb32(s->pb);
145 avio_rb32(s->pb); // rdvs offset
146 avio_rb32(s->pb); // rdao offset
147 avio_rb32(s->pb); // rdas offset
149 tmp = avio_rb32(s->pb);
150 av_log(s, AV_LOG_TRACE, "num video chunks %d\n", tmp);
152 tmp = avio_rb32(s->pb);
153 av_log(s, AV_LOG_TRACE, "num audio chunks %d\n", tmp);
155 avio_skip(s->pb, 6*4);
158 static int r3d_read_header(AVFormatContext *s)
160 R3DContext *r3d = s->priv_data;
164 if (read_atom(s, &atom) < 0) {
165 av_log(s, AV_LOG_ERROR, "error reading atom\n");
168 if (atom.tag == MKTAG('R','E','D','1')) {
169 if ((ret = r3d_read_red1(s)) < 0) {
170 av_log(s, AV_LOG_ERROR, "error parsing 'red1' atom\n");
174 av_log(s, AV_LOG_ERROR, "could not find 'red1' atom\n");
178 /* we cannot create the audio stream now because we do not know the
180 if (r3d->audio_channels)
181 s->ctx_flags |= AVFMTCTX_NOHEADER;
183 s->internal->data_offset = avio_tell(s->pb);
184 av_log(s, AV_LOG_TRACE, "data offset %#"PRIx64"\n", s->internal->data_offset);
185 if (!(s->pb->seekable & AVIO_SEEKABLE_NORMAL))
187 // find REOB/REOF/REOS to load index
188 avio_seek(s->pb, avio_size(s->pb)-48-8, SEEK_SET);
189 if (read_atom(s, &atom) < 0)
190 av_log(s, AV_LOG_ERROR, "error reading end atom\n");
192 if (atom.tag != MKTAG('R','E','O','B') &&
193 atom.tag != MKTAG('R','E','O','F') &&
194 atom.tag != MKTAG('R','E','O','S'))
199 if (r3d->rdvo_offset) {
200 avio_seek(s->pb, r3d->rdvo_offset, SEEK_SET);
201 if (read_atom(s, &atom) < 0)
202 av_log(s, AV_LOG_ERROR, "error reading 'rdvo' atom\n");
203 if (atom.tag == MKTAG('R','D','V','O')) {
204 if (r3d_read_rdvo(s, &atom) < 0)
205 av_log(s, AV_LOG_ERROR, "error parsing 'rdvo' atom\n");
210 avio_seek(s->pb, s->internal->data_offset, SEEK_SET);
214 static int r3d_read_redv(AVFormatContext *s, AVPacket *pkt, Atom *atom)
216 AVStream *st = s->streams[0];
219 int64_t pos = avio_tell(s->pb);
223 dts = avio_rb32(s->pb);
225 tmp = avio_rb32(s->pb);
226 av_log(s, AV_LOG_TRACE, "frame num %d\n", tmp);
228 tmp = avio_r8(s->pb); // major version
229 tmp2 = avio_r8(s->pb); // minor version
230 av_log(s, AV_LOG_TRACE, "version %d.%d\n", tmp, tmp2);
232 tmp = avio_rb16(s->pb); // unknown
233 av_log(s, AV_LOG_TRACE, "unknown %d\n", tmp);
236 tmp = avio_rb16(s->pb); // unknown
237 av_log(s, AV_LOG_TRACE, "unknown %d\n", tmp);
239 tmp = avio_rb16(s->pb); // unknown
240 av_log(s, AV_LOG_TRACE, "unknown %d\n", tmp);
242 tmp = avio_rb32(s->pb);
243 av_log(s, AV_LOG_TRACE, "width %d\n", tmp);
244 tmp = avio_rb32(s->pb);
245 av_log(s, AV_LOG_TRACE, "height %d\n", tmp);
247 tmp = avio_rb32(s->pb);
248 av_log(s, AV_LOG_TRACE, "metadata len %d\n", tmp);
250 tmp = atom->size - 8 - (avio_tell(s->pb) - pos);
253 ret = av_get_packet(s->pb, pkt, tmp);
255 av_log(s, AV_LOG_ERROR, "error reading video packet\n");
259 pkt->stream_index = 0;
261 if (st->avg_frame_rate.num)
262 pkt->duration = (uint64_t)st->time_base.den*
263 st->avg_frame_rate.den/st->avg_frame_rate.num;
264 av_log(s, AV_LOG_TRACE, "pkt dts %"PRId64" duration %"PRId64"\n", pkt->dts, pkt->duration);
269 static int r3d_read_reda(AVFormatContext *s, AVPacket *pkt, Atom *atom)
271 R3DContext *r3d = s->priv_data;
273 int av_unused tmp, tmp2;
275 int64_t pos = avio_tell(s->pb);
279 if (s->nb_streams < 2) {
280 st = avformat_new_stream(s, NULL);
282 return AVERROR(ENOMEM);
283 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
284 st->codecpar->codec_id = AV_CODEC_ID_PCM_S32BE;
285 st->codecpar->channels = r3d->audio_channels;
286 avpriv_set_pts_info(st, 32, 1, s->streams[0]->time_base.den);
291 dts = avio_rb32(s->pb);
293 st->codecpar->sample_rate = avio_rb32(s->pb);
294 if (st->codecpar->sample_rate <= 0) {
295 av_log(s, AV_LOG_ERROR, "Bad sample rate\n");
296 return AVERROR_INVALIDDATA;
299 samples = avio_rb32(s->pb);
301 tmp = avio_rb32(s->pb);
302 av_log(s, AV_LOG_TRACE, "packet num %d\n", tmp);
304 tmp = avio_rb16(s->pb); // unknown
305 av_log(s, AV_LOG_TRACE, "unknown %d\n", tmp);
307 tmp = avio_r8(s->pb); // major version
308 tmp2 = avio_r8(s->pb); // minor version
309 av_log(s, AV_LOG_TRACE, "version %d.%d\n", tmp, tmp2);
311 tmp = avio_rb32(s->pb); // unknown
312 av_log(s, AV_LOG_TRACE, "unknown %d\n", tmp);
314 size = atom->size - 8 - (avio_tell(s->pb) - pos);
317 ret = av_get_packet(s->pb, pkt, size);
319 av_log(s, AV_LOG_ERROR, "error reading audio packet\n");
323 pkt->stream_index = 1;
325 if (st->codecpar->sample_rate)
326 pkt->duration = av_rescale(samples, st->time_base.den, st->codecpar->sample_rate);
327 av_log(s, AV_LOG_TRACE, "pkt dts %"PRId64" duration %"PRId64" samples %d sample rate %d\n",
328 pkt->dts, pkt->duration, samples, st->codecpar->sample_rate);
333 static int r3d_read_packet(AVFormatContext *s, AVPacket *pkt)
335 R3DContext *r3d = s->priv_data;
340 if (read_atom(s, &atom) < 0) {
345 case MKTAG('R','E','D','V'):
346 if (s->streams[0]->discard == AVDISCARD_ALL)
348 if (!(err = r3d_read_redv(s, pkt, &atom)))
351 case MKTAG('R','E','D','A'):
352 if (!r3d->audio_channels)
354 if (s->nb_streams >= 2 && s->streams[1]->discard == AVDISCARD_ALL)
356 if (!(err = r3d_read_reda(s, pkt, &atom)))
361 avio_skip(s->pb, atom.size-8);
367 static int r3d_probe(const AVProbeData *p)
369 if (AV_RL32(p->buf + 4) == MKTAG('R','E','D','1'))
370 return AVPROBE_SCORE_MAX;
374 static int r3d_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
376 AVStream *st = s->streams[0]; // video stream
377 R3DContext *r3d = s->priv_data;
380 if (!st->avg_frame_rate.num)
383 frame_num = av_rescale_q(sample_time, st->time_base,
384 av_inv_q(st->avg_frame_rate));
385 av_log(s, AV_LOG_TRACE, "seek frame num %d timestamp %"PRId64"\n",
386 frame_num, sample_time);
388 if (frame_num < r3d->video_offsets_count) {
389 if (avio_seek(s->pb, r3d->video_offsets_count, SEEK_SET) < 0)
392 av_log(s, AV_LOG_ERROR, "could not seek to frame %d\n", frame_num);
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_seek = r3d_seek,