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
> 0 && framerate
.den
> 0) {
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
, "Bad 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
,