| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * R3D REDCODE demuxer | ||
| 3 | * Copyright (c) 2008 Baptiste Coudurier <baptiste dot coudurier at gmail dot com> | ||
| 4 | * | ||
| 5 | * This file is part of FFmpeg. | ||
| 6 | * | ||
| 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. | ||
| 11 | * | ||
| 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. | ||
| 16 | * | ||
| 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 | ||
| 20 | */ | ||
| 21 | |||
| 22 | #include "libavutil/intreadwrite.h" | ||
| 23 | #include "libavutil/dict.h" | ||
| 24 | #include "libavutil/mathematics.h" | ||
| 25 | #include "avformat.h" | ||
| 26 | #include "demux.h" | ||
| 27 | #include "internal.h" | ||
| 28 | |||
| 29 | typedef struct R3DContext { | ||
| 30 | unsigned video_offsets_count; | ||
| 31 | unsigned rdvo_offset; | ||
| 32 | |||
| 33 | int audio_channels; | ||
| 34 | } R3DContext; | ||
| 35 | |||
| 36 | typedef struct Atom { | ||
| 37 | unsigned size; | ||
| 38 | uint32_t tag; | ||
| 39 | uint64_t offset; | ||
| 40 | } Atom; | ||
| 41 | |||
| 42 | 9 | static int read_atom(AVFormatContext *s, Atom *atom) | |
| 43 | { | ||
| 44 | 9 | atom->offset = avio_tell(s->pb); | |
| 45 | 9 | atom->size = avio_rb32(s->pb); | |
| 46 |
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9 | if (atom->size < 8) |
| 47 | 2 | return -1; | |
| 48 | 7 | atom->tag = avio_rl32(s->pb); | |
| 49 | 7 | av_log(s, AV_LOG_TRACE, "atom %u %.4s offset %#"PRIx64"\n", | |
| 50 | 7 | atom->size, (char*)&atom->tag, atom->offset); | |
| 51 | 7 | return atom->size; | |
| 52 | } | ||
| 53 | |||
| 54 | 1 | static int r3d_read_red1(AVFormatContext *s) | |
| 55 | { | ||
| 56 | 1 | AVStream *st = avformat_new_stream(s, NULL); | |
| 57 | 1 | R3DContext *r3d = s->priv_data; | |
| 58 | char filename[258]; | ||
| 59 | int tmp; | ||
| 60 | int ret; | ||
| 61 | int av_unused tmp2; | ||
| 62 | AVRational framerate; | ||
| 63 | |||
| 64 |
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1 | if (!st) |
| 65 | ✗ | return AVERROR(ENOMEM); | |
| 66 | 1 | st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO; | |
| 67 | 1 | st->codecpar->codec_id = AV_CODEC_ID_JPEG2000; | |
| 68 | |||
| 69 | 1 | tmp = avio_r8(s->pb); // major version | |
| 70 | 1 | tmp2 = avio_r8(s->pb); // minor version | |
| 71 | 1 | av_log(s, AV_LOG_TRACE, "version %d.%d\n", tmp, tmp2); | |
| 72 | |||
| 73 | 1 | tmp = avio_rb16(s->pb); // unknown | |
| 74 | 1 | av_log(s, AV_LOG_TRACE, "unknown1 %d\n", tmp); | |
| 75 | |||
| 76 | 1 | tmp = avio_rb32(s->pb); | |
| 77 | 1 | avpriv_set_pts_info(st, 32, 1, tmp); | |
| 78 | |||
| 79 | 1 | tmp = avio_rb32(s->pb); // filenum | |
| 80 | 1 | av_log(s, AV_LOG_TRACE, "filenum %d\n", tmp); | |
| 81 | |||
| 82 | 1 | avio_skip(s->pb, 32); // unknown | |
| 83 | |||
| 84 | 1 | st->codecpar->width = avio_rb32(s->pb); | |
| 85 | 1 | st->codecpar->height = avio_rb32(s->pb); | |
| 86 | |||
| 87 | 1 | tmp = avio_rb16(s->pb); // unknown | |
| 88 | 1 | av_log(s, AV_LOG_TRACE, "unknown2 %d\n", tmp); | |
| 89 | |||
| 90 | 1 | framerate.num = avio_rb16(s->pb); | |
| 91 | 1 | framerate.den = avio_rb16(s->pb); | |
| 92 |
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1 | if (framerate.num > 0 && framerate.den > 0) { |
| 93 | #if FF_API_R_FRAME_RATE | ||
| 94 | 1 | st->r_frame_rate = | |
| 95 | #endif | ||
| 96 | 1 | st->avg_frame_rate = framerate; | |
| 97 | } | ||
| 98 | |||
| 99 | 1 | r3d->audio_channels = avio_r8(s->pb); // audio channels | |
| 100 | 1 | av_log(s, AV_LOG_TRACE, "audio channels %d\n", tmp); | |
| 101 | |||
| 102 | 1 | ret = avio_read(s->pb, filename, 257); | |
| 103 |
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1 | if (ret < 257) |
| 104 | ✗ | return ret < 0 ? ret : AVERROR_EOF; | |
| 105 | 1 | filename[sizeof(filename)-1] = 0; | |
| 106 | 1 | av_dict_set(&st->metadata, "filename", filename, 0); | |
| 107 | |||
| 108 | 1 | av_log(s, AV_LOG_TRACE, "filename %s\n", filename); | |
| 109 | 1 | av_log(s, AV_LOG_TRACE, "resolution %dx%d\n", st->codecpar->width, st->codecpar->height); | |
| 110 | 1 | av_log(s, AV_LOG_TRACE, "timescale %d\n", st->time_base.den); | |
| 111 | 1 | av_log(s, AV_LOG_TRACE, "frame rate %d/%d\n", | |
| 112 | framerate.num, framerate.den); | ||
| 113 | |||
| 114 | 1 | return 0; | |
| 115 | } | ||
| 116 | |||
| 117 | ✗ | static int r3d_read_rdvo(AVFormatContext *s, Atom *atom) | |
| 118 | { | ||
| 119 | ✗ | R3DContext *r3d = s->priv_data; | |
| 120 | ✗ | AVStream *st = s->streams[0]; | |
| 121 | int i; | ||
| 122 | |||
| 123 | ✗ | r3d->video_offsets_count = (atom->size - 8) / 4; | |
| 124 | |||
| 125 | ✗ | for (i = 0; i < r3d->video_offsets_count; i++) { | |
| 126 | ✗ | unsigned video_offset = avio_rb32(s->pb); | |
| 127 | ✗ | if (!video_offset) { | |
| 128 | ✗ | r3d->video_offsets_count = i; | |
| 129 | ✗ | break; | |
| 130 | } | ||
| 131 | ✗ | av_log(s, AV_LOG_TRACE, "video offset %d: %#x\n", i, video_offset); | |
| 132 | } | ||
| 133 | |||
| 134 | ✗ | if (st->avg_frame_rate.num) | |
| 135 | ✗ | st->duration = av_rescale_q(r3d->video_offsets_count, | |
| 136 | av_inv_q(st->avg_frame_rate), | ||
| 137 | st->time_base); | ||
| 138 | ✗ | av_log(s, AV_LOG_TRACE, "duration %"PRId64"\n", st->duration); | |
| 139 | |||
| 140 | ✗ | return 0; | |
| 141 | } | ||
| 142 | |||
| 143 | ✗ | static void r3d_read_reos(AVFormatContext *s) | |
| 144 | { | ||
| 145 | ✗ | R3DContext *r3d = s->priv_data; | |
| 146 | int av_unused tmp; | ||
| 147 | |||
| 148 | ✗ | r3d->rdvo_offset = avio_rb32(s->pb); | |
| 149 | ✗ | avio_rb32(s->pb); // rdvs offset | |
| 150 | ✗ | avio_rb32(s->pb); // rdao offset | |
| 151 | ✗ | avio_rb32(s->pb); // rdas offset | |
| 152 | |||
| 153 | ✗ | tmp = avio_rb32(s->pb); | |
| 154 | ✗ | av_log(s, AV_LOG_TRACE, "num video chunks %d\n", tmp); | |
| 155 | |||
| 156 | ✗ | tmp = avio_rb32(s->pb); | |
| 157 | ✗ | av_log(s, AV_LOG_TRACE, "num audio chunks %d\n", tmp); | |
| 158 | |||
| 159 | ✗ | avio_skip(s->pb, 6*4); | |
| 160 | ✗ | } | |
| 161 | |||
| 162 | 1 | static int r3d_read_header(AVFormatContext *s) | |
| 163 | { | ||
| 164 | 1 | FFFormatContext *const si = ffformatcontext(s); | |
| 165 | 1 | R3DContext *r3d = s->priv_data; | |
| 166 | Atom atom; | ||
| 167 | int ret; | ||
| 168 | |||
| 169 |
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1 | if (read_atom(s, &atom) < 0) { |
| 170 | ✗ | av_log(s, AV_LOG_ERROR, "error reading atom\n"); | |
| 171 | ✗ | return -1; | |
| 172 | } | ||
| 173 |
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1 | if (atom.tag == MKTAG('R','E','D','1')) { |
| 174 |
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1 | if ((ret = r3d_read_red1(s)) < 0) { |
| 175 | ✗ | av_log(s, AV_LOG_ERROR, "error parsing 'red1' atom\n"); | |
| 176 | ✗ | return ret; | |
| 177 | } | ||
| 178 | } else { | ||
| 179 | ✗ | av_log(s, AV_LOG_ERROR, "could not find 'red1' atom\n"); | |
| 180 | ✗ | return -1; | |
| 181 | } | ||
| 182 | |||
| 183 | /* we cannot create the audio stream now because we do not know the | ||
| 184 | * sample rate */ | ||
| 185 |
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1 | if (r3d->audio_channels) |
| 186 | 1 | s->ctx_flags |= AVFMTCTX_NOHEADER; | |
| 187 | |||
| 188 | 1 | si->data_offset = avio_tell(s->pb); | |
| 189 | 1 | av_log(s, AV_LOG_TRACE, "data offset %#"PRIx64"\n", si->data_offset); | |
| 190 |
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1 | if (!(s->pb->seekable & AVIO_SEEKABLE_NORMAL)) |
| 191 | ✗ | return 0; | |
| 192 | // find REOB/REOF/REOS to load index | ||
| 193 | 1 | avio_seek(s->pb, avio_size(s->pb)-48-8, SEEK_SET); | |
| 194 |
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1 | if (read_atom(s, &atom) < 0) |
| 195 | ✗ | av_log(s, AV_LOG_ERROR, "error reading end atom\n"); | |
| 196 | |||
| 197 |
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1 | if (atom.tag != MKTAG('R','E','O','B') && |
| 198 |
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1 | atom.tag != MKTAG('R','E','O','F') && |
| 199 |
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1 | atom.tag != MKTAG('R','E','O','S')) |
| 200 | 1 | goto out; | |
| 201 | |||
| 202 | ✗ | r3d_read_reos(s); | |
| 203 | |||
| 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"); | |
| 211 | } | ||
| 212 | } | ||
| 213 | |||
| 214 | ✗ | out: | |
| 215 | 1 | avio_seek(s->pb, si->data_offset, SEEK_SET); | |
| 216 | 1 | return 0; | |
| 217 | } | ||
| 218 | |||
| 219 | 3 | static int r3d_read_redv(AVFormatContext *s, AVPacket *pkt, Atom *atom) | |
| 220 | { | ||
| 221 | 3 | AVStream *st = s->streams[0]; | |
| 222 | int tmp; | ||
| 223 | int av_unused tmp2; | ||
| 224 | 3 | int64_t pos = avio_tell(s->pb); | |
| 225 | unsigned dts; | ||
| 226 | int ret; | ||
| 227 | |||
| 228 | 3 | dts = avio_rb32(s->pb); | |
| 229 | |||
| 230 | 3 | tmp = avio_rb32(s->pb); | |
| 231 | 3 | av_log(s, AV_LOG_TRACE, "frame num %d\n", tmp); | |
| 232 | |||
| 233 | 3 | tmp = avio_r8(s->pb); // major version | |
| 234 | 3 | tmp2 = avio_r8(s->pb); // minor version | |
| 235 | 3 | av_log(s, AV_LOG_TRACE, "version %d.%d\n", tmp, tmp2); | |
| 236 | |||
| 237 | 3 | tmp = avio_rb16(s->pb); // unknown | |
| 238 | 3 | av_log(s, AV_LOG_TRACE, "unknown %d\n", tmp); | |
| 239 | |||
| 240 |
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3 | if (tmp > 4) { |
| 241 | ✗ | tmp = avio_rb16(s->pb); // unknown | |
| 242 | ✗ | av_log(s, AV_LOG_TRACE, "unknown %d\n", tmp); | |
| 243 | |||
| 244 | ✗ | tmp = avio_rb16(s->pb); // unknown | |
| 245 | ✗ | av_log(s, AV_LOG_TRACE, "unknown %d\n", tmp); | |
| 246 | |||
| 247 | ✗ | tmp = avio_rb32(s->pb); | |
| 248 | ✗ | av_log(s, AV_LOG_TRACE, "width %d\n", tmp); | |
| 249 | ✗ | tmp = avio_rb32(s->pb); | |
| 250 | ✗ | av_log(s, AV_LOG_TRACE, "height %d\n", tmp); | |
| 251 | |||
| 252 | ✗ | tmp = avio_rb32(s->pb); | |
| 253 | ✗ | av_log(s, AV_LOG_TRACE, "metadata len %d\n", tmp); | |
| 254 | } | ||
| 255 | 3 | tmp = atom->size - 8 - (avio_tell(s->pb) - pos); | |
| 256 |
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3 | if (tmp < 0) |
| 257 | ✗ | return -1; | |
| 258 | 3 | ret = av_get_packet(s->pb, pkt, tmp); | |
| 259 |
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3 | if (ret < 0) { |
| 260 | ✗ | av_log(s, AV_LOG_ERROR, "error reading video packet\n"); | |
| 261 | ✗ | return -1; | |
| 262 | } | ||
| 263 | |||
| 264 | 3 | pkt->stream_index = 0; | |
| 265 | 3 | pkt->dts = dts; | |
| 266 |
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3 | if (st->avg_frame_rate.num) |
| 267 | 3 | pkt->duration = (uint64_t)st->time_base.den* | |
| 268 | 3 | st->avg_frame_rate.den/st->avg_frame_rate.num; | |
| 269 | 3 | av_log(s, AV_LOG_TRACE, "pkt dts %"PRId64" duration %"PRId64"\n", pkt->dts, pkt->duration); | |
| 270 | |||
| 271 | 3 | return 0; | |
| 272 | } | ||
| 273 | |||
| 274 | 2 | static int r3d_read_reda(AVFormatContext *s, AVPacket *pkt, Atom *atom) | |
| 275 | { | ||
| 276 | 2 | R3DContext *r3d = s->priv_data; | |
| 277 | AVStream *st; | ||
| 278 | int av_unused tmp, tmp2; | ||
| 279 | int samples, size; | ||
| 280 | 2 | int64_t pos = avio_tell(s->pb); | |
| 281 | unsigned dts; | ||
| 282 | int ret; | ||
| 283 | |||
| 284 |
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2 | if (s->nb_streams < 2) { |
| 285 | 1 | st = avformat_new_stream(s, NULL); | |
| 286 |
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1 | if (!st) |
| 287 | ✗ | return AVERROR(ENOMEM); | |
| 288 | 1 | st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO; | |
| 289 | 1 | st->codecpar->codec_id = AV_CODEC_ID_PCM_S32BE; | |
| 290 | 1 | st->codecpar->ch_layout.nb_channels = r3d->audio_channels; | |
| 291 | 1 | avpriv_set_pts_info(st, 32, 1, s->streams[0]->time_base.den); | |
| 292 | } else { | ||
| 293 | 1 | st = s->streams[1]; | |
| 294 | } | ||
| 295 | |||
| 296 | 2 | dts = avio_rb32(s->pb); | |
| 297 | |||
| 298 | 2 | st->codecpar->sample_rate = avio_rb32(s->pb); | |
| 299 |
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2 | if (st->codecpar->sample_rate <= 0) { |
| 300 | ✗ | av_log(s, AV_LOG_ERROR, "Bad sample rate\n"); | |
| 301 | ✗ | return AVERROR_INVALIDDATA; | |
| 302 | } | ||
| 303 | |||
| 304 | 2 | samples = avio_rb32(s->pb); | |
| 305 | |||
| 306 | 2 | tmp = avio_rb32(s->pb); | |
| 307 | 2 | av_log(s, AV_LOG_TRACE, "packet num %d\n", tmp); | |
| 308 | |||
| 309 | 2 | tmp = avio_rb16(s->pb); // unknown | |
| 310 | 2 | av_log(s, AV_LOG_TRACE, "unknown %d\n", tmp); | |
| 311 | |||
| 312 | 2 | tmp = avio_r8(s->pb); // major version | |
| 313 | 2 | tmp2 = avio_r8(s->pb); // minor version | |
| 314 | 2 | av_log(s, AV_LOG_TRACE, "version %d.%d\n", tmp, tmp2); | |
| 315 | |||
| 316 | 2 | tmp = avio_rb32(s->pb); // unknown | |
| 317 | 2 | av_log(s, AV_LOG_TRACE, "unknown %d\n", tmp); | |
| 318 | |||
| 319 | 2 | size = atom->size - 8 - (avio_tell(s->pb) - pos); | |
| 320 |
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2 | if (size < 0) |
| 321 | ✗ | return -1; | |
| 322 | 2 | ret = av_get_packet(s->pb, pkt, size); | |
| 323 |
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2 | if (ret < 0) { |
| 324 | ✗ | av_log(s, AV_LOG_ERROR, "error reading audio packet\n"); | |
| 325 | ✗ | return ret; | |
| 326 | } | ||
| 327 | |||
| 328 | 2 | pkt->stream_index = 1; | |
| 329 | 2 | pkt->dts = dts; | |
| 330 | |||
| 331 |
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2 | if (st->codecpar->sample_rate && samples > 0) |
| 332 | 2 | pkt->duration = av_rescale(samples, st->time_base.den, st->codecpar->sample_rate); | |
| 333 | 2 | av_log(s, AV_LOG_TRACE, "pkt dts %"PRId64" duration %"PRId64" samples %d sample rate %d\n", | |
| 334 | 2 | pkt->dts, pkt->duration, samples, st->codecpar->sample_rate); | |
| 335 | |||
| 336 | 2 | return 0; | |
| 337 | } | ||
| 338 | |||
| 339 | 7 | static int r3d_read_packet(AVFormatContext *s, AVPacket *pkt) | |
| 340 | { | ||
| 341 | 7 | R3DContext *r3d = s->priv_data; | |
| 342 | Atom atom; | ||
| 343 | 7 | int err = 0; | |
| 344 | |||
| 345 |
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7 | while (!err) { |
| 346 |
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7 | if (read_atom(s, &atom) < 0) { |
| 347 | 2 | err = -1; | |
| 348 | 2 | break; | |
| 349 | } | ||
| 350 |
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5 | switch (atom.tag) { |
| 351 | 3 | case MKTAG('R','E','D','V'): | |
| 352 |
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3 | if (s->streams[0]->discard == AVDISCARD_ALL) |
| 353 | ✗ | goto skip; | |
| 354 |
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3 | if (!(err = r3d_read_redv(s, pkt, &atom))) |
| 355 | 3 | return 0; | |
| 356 | ✗ | break; | |
| 357 | 2 | case MKTAG('R','E','D','A'): | |
| 358 |
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2 | if (!r3d->audio_channels) |
| 359 | ✗ | return -1; | |
| 360 |
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2 | if (s->nb_streams >= 2 && s->streams[1]->discard == AVDISCARD_ALL) |
| 361 | ✗ | goto skip; | |
| 362 |
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2 | if (!(err = r3d_read_reda(s, pkt, &atom))) |
| 363 | 2 | return 0; | |
| 364 | ✗ | break; | |
| 365 | default: | ||
| 366 | ✗ | skip: | |
| 367 | ✗ | avio_skip(s->pb, atom.size-8); | |
| 368 | } | ||
| 369 | } | ||
| 370 | 2 | return err; | |
| 371 | } | ||
| 372 | |||
| 373 | 7241 | static int r3d_probe(const AVProbeData *p) | |
| 374 | { | ||
| 375 |
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7241 | if (AV_RL32(p->buf + 4) == MKTAG('R','E','D','1')) |
| 376 | 1 | return AVPROBE_SCORE_MAX; | |
| 377 | 7240 | return 0; | |
| 378 | } | ||
| 379 | |||
| 380 | ✗ | static int r3d_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags) | |
| 381 | { | ||
| 382 | ✗ | AVStream *st = s->streams[0]; // video stream | |
| 383 | ✗ | R3DContext *r3d = s->priv_data; | |
| 384 | int frame_num; | ||
| 385 | |||
| 386 | ✗ | if (!st->avg_frame_rate.num) | |
| 387 | ✗ | return -1; | |
| 388 | |||
| 389 | ✗ | frame_num = av_rescale_q(sample_time, st->time_base, | |
| 390 | av_inv_q(st->avg_frame_rate)); | ||
| 391 | ✗ | av_log(s, AV_LOG_TRACE, "seek frame num %d timestamp %"PRId64"\n", | |
| 392 | frame_num, sample_time); | ||
| 393 | |||
| 394 | ✗ | if (frame_num < r3d->video_offsets_count) { | |
| 395 | ✗ | if (avio_seek(s->pb, r3d->video_offsets_count, SEEK_SET) < 0) | |
| 396 | ✗ | return -1; | |
| 397 | } else { | ||
| 398 | ✗ | av_log(s, AV_LOG_ERROR, "could not seek to frame %d\n", frame_num); | |
| 399 | ✗ | return -1; | |
| 400 | } | ||
| 401 | |||
| 402 | ✗ | return 0; | |
| 403 | } | ||
| 404 | |||
| 405 | const FFInputFormat ff_r3d_demuxer = { | ||
| 406 | .p.name = "r3d", | ||
| 407 | .p.long_name = NULL_IF_CONFIG_SMALL("REDCODE R3D"), | ||
| 408 | .priv_data_size = sizeof(R3DContext), | ||
| 409 | .read_probe = r3d_probe, | ||
| 410 | .read_header = r3d_read_header, | ||
| 411 | .read_packet = r3d_read_packet, | ||
| 412 | .read_seek = r3d_seek, | ||
| 413 | }; | ||
| 414 |