libavformat/electronicarts.c

   1 /* Electronic Arts Multimedia File Demuxer
   2  * Copyright (c) 2004  The ffmpeg Project
   3  * Copyright (c) 2006-2008 Peter Ross
   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 /**
  23  * @file libavformat/electronicarts.c
  24  * Electronic Arts Multimedia file demuxer (WVE/UV2/etc.)
  25  * by Robin Kay (komadori at gekkou.co.uk)
  26  */
  27
  28 #include "libavutil/intreadwrite.h"
  29 #include "avformat.h"
  30
  31 #define SCHl_TAG MKTAG('S', 'C', 'H', 'l')
  32 #define SEAD_TAG MKTAG('S', 'E', 'A', 'D')    /* Sxxx header */
  33 #define SNDC_TAG MKTAG('S', 'N', 'D', 'C')    /* Sxxx data */
  34 #define SEND_TAG MKTAG('S', 'E', 'N', 'D')    /* Sxxx end */
  35 #define SHEN_TAG MKTAG('S', 'H', 'E', 'N')    /* SxEN header */
  36 #define SDEN_TAG MKTAG('S', 'D', 'E', 'N')    /* SxEN data */
  37 #define SEEN_TAG MKTAG('S', 'E', 'E', 'N')    /* SxEN end */
  38 #define ISNh_TAG MKTAG('1', 'S', 'N', 'h')    /* 1SNx header */
  39 #define EACS_TAG MKTAG('E', 'A', 'C', 'S')
  40 #define ISNd_TAG MKTAG('1', 'S', 'N', 'd')    /* 1SNx data */
  41 #define ISNe_TAG MKTAG('1', 'S', 'N', 'e')    /* 1SNx end */
  42 #define PT00_TAG MKTAG('P', 'T', 0x0, 0x0)
  43 #define GSTR_TAG MKTAG('G', 'S', 'T', 'R')
  44 #define SCDl_TAG MKTAG('S', 'C', 'D', 'l')
  45 #define SCEl_TAG MKTAG('S', 'C', 'E', 'l')
  46 #define kVGT_TAG MKTAG('k', 'V', 'G', 'T')    /* TGV i-frame */
  47 #define fVGT_TAG MKTAG('f', 'V', 'G', 'T')    /* TGV p-frame */
  48 #define mTCD_TAG MKTAG('m', 'T', 'C', 'D')    /* MDEC */
  49 #define MADk_TAG MKTAG('M', 'A', 'D', 'k')    /* MAD i-frame */
  50 #define MPCh_TAG MKTAG('M', 'P', 'C', 'h')    /* MPEG2 */
  51 #define TGQs_TAG MKTAG('T', 'G', 'Q', 's')    /* TGQ i-frame (appears in .TGQ files) */
  52 #define pQGT_TAG MKTAG('p', 'Q', 'G', 'T')    /* TGQ i-frame (appears in .UV files) */
  53 #define pIQT_TAG MKTAG('p', 'I', 'Q', 'T')    /* TQI/UV2 i-frame (.UV2/.WVE) */
  54 #define MVhd_TAG MKTAG('M', 'V', 'h', 'd')
  55 #define MV0K_TAG MKTAG('M', 'V', '0', 'K')
  56 #define MV0F_TAG MKTAG('M', 'V', '0', 'F')
  57 #define MVIh_TAG MKTAG('M', 'V', 'I', 'h')    /* CMV header */
  58 #define MVIf_TAG MKTAG('M', 'V', 'I', 'f')    /* CMV i-frame */
  59
  60 typedef struct EaDemuxContext {
  61     int big_endian;
  62
  63     enum CodecID video_codec;
  64     AVRational time_base;
  65     int width, height;
  66     int video_stream_index;
  67
  68     enum CodecID audio_codec;
  69     int audio_stream_index;
  70     int audio_frame_counter;
  71
  72     int64_t audio_pts;
  73
  74     int bytes;
  75     int sample_rate;
  76     int num_channels;
  77     int num_samples;
  78 } EaDemuxContext;
  79
  80 static uint32_t read_arbitary(ByteIOContext *pb) {
  81     uint8_t size, byte;
  82     int i;
  83     uint32_t word;
  84
  85     size = get_byte(pb);
  86
  87     word = 0;
  88     for (i = 0; i < size; i++) {
  89         byte = get_byte(pb);
  90         word <<= 8;
  91         word |= byte;
  92     }
  93
  94     return word;
  95 }
  96
  97 /*
  98  * Process PT/GSTR sound header
  99  * return 1 if success, 0 if invalid format, otherwise AVERROR_xxx
 100  */
 101 static int process_audio_header_elements(AVFormatContext *s)
 102 {
 103     int inHeader = 1;
 104     EaDemuxContext *ea = s->priv_data;
 105     ByteIOContext *pb = s->pb;
 106     int compression_type = -1, revision = -1, revision2 = -1;
 107
 108     ea->bytes = 2;
 109     ea->sample_rate = -1;
 110     ea->num_channels = 1;
 111
 112     while (inHeader) {
 113         int inSubheader;
 114         uint8_t byte;
 115         byte = get_byte(pb);
 116
 117         switch (byte) {
 118         case 0xFD:
 119             av_log (s, AV_LOG_INFO, "entered audio subheader\n");
 120             inSubheader = 1;
 121             while (inSubheader) {
 122                 uint8_t subbyte;
 123                 subbyte = get_byte(pb);
 124
 125                 switch (subbyte) {
 126                 case 0x80:
 127                     revision = read_arbitary(pb);
 128                     av_log (s, AV_LOG_INFO, "revision (element 0x80) set to 0x%08x\n", revision);
 129                     break;
 130                 case 0x82:
 131                     ea->num_channels = read_arbitary(pb);
 132                     av_log (s, AV_LOG_INFO, "num_channels (element 0x82) set to 0x%08x\n", ea->num_channels);
 133                     break;
 134                 case 0x83:
 135                     compression_type = read_arbitary(pb);
 136                     av_log (s, AV_LOG_INFO, "compression_type (element 0x83) set to 0x%08x\n", compression_type);
 137                     break;
 138                 case 0x84:
 139                     ea->sample_rate = read_arbitary(pb);
 140                     av_log (s, AV_LOG_INFO, "sample_rate (element 0x84) set to %i\n", ea->sample_rate);
 141                     break;
 142                 case 0x85:
 143                     ea->num_samples = read_arbitary(pb);
 144                     av_log (s, AV_LOG_INFO, "num_samples (element 0x85) set to 0x%08x\n", ea->num_samples);
 145                     break;
 146                 case 0x8A:
 147                     av_log (s, AV_LOG_INFO, "element 0x%02x set to 0x%08x\n", subbyte, read_arbitary(pb));
 148                     av_log (s, AV_LOG_INFO, "exited audio subheader\n");
 149                     inSubheader = 0;
 150                     break;
 151                 case 0xA0:
 152                     revision2 = read_arbitary(pb);
 153                     av_log (s, AV_LOG_INFO, "revision2 (element 0xA0) set to 0x%08x\n", revision2);
 154                     break;
 155                 case 0xFF:
 156                     av_log (s, AV_LOG_INFO, "end of header block reached (within audio subheader)\n");
 157                     inSubheader = 0;
 158                     inHeader = 0;
 159                     break;
 160                 default:
 161                     av_log (s, AV_LOG_INFO, "element 0x%02x set to 0x%08x\n", subbyte, read_arbitary(pb));
 162                     break;
 163                 }
 164             }
 165             break;
 166         case 0xFF:
 167             av_log (s, AV_LOG_INFO, "end of header block reached\n");
 168             inHeader = 0;
 169             break;
 170         default:
 171             av_log (s, AV_LOG_INFO, "header element 0x%02x set to 0x%08x\n", byte, read_arbitary(pb));
 172             break;
 173         }
 174     }
 175
 176     switch (compression_type) {
 177     case  0: ea->audio_codec = CODEC_ID_PCM_S16LE; break;
 178     case  7: ea->audio_codec = CODEC_ID_ADPCM_EA; break;
 179     case -1:
 180         switch (revision) {
 181         case  1: ea->audio_codec = CODEC_ID_ADPCM_EA_R1; break;
 182         case  2: ea->audio_codec = CODEC_ID_ADPCM_EA_R2; break;
 183         case  3: ea->audio_codec = CODEC_ID_ADPCM_EA_R3; break;
 184         case -1: break;
 185         default:
 186             av_log(s, AV_LOG_ERROR, "unsupported stream type; revision=%i\n", revision);
 187             return 0;
 188         }
 189         switch (revision2) {
 190         case  8: ea->audio_codec = CODEC_ID_PCM_S16LE_PLANAR; break;
 191         case 10: ea->audio_codec = CODEC_ID_ADPCM_EA_R2; break;
 192         case 16: ea->audio_codec = CODEC_ID_MP3; break;
 193         case -1: break;
 194         default:
 195             av_log(s, AV_LOG_ERROR, "unsupported stream type; revision2=%i\n", revision2);
 196             return 0;
 197         }
 198         break;
 199     default:
 200         av_log(s, AV_LOG_ERROR, "unsupported stream type; compression_type=%i\n", compression_type);
 201         return 0;
 202     }
 203
 204     if (ea->sample_rate == -1)
 205         ea->sample_rate = revision==3 ? 48000 : 22050;
 206
 207     return 1;
 208 }
 209
 210 /*
 211  * Process EACS sound header
 212  * return 1 if success, 0 if invalid format, otherwise AVERROR_xxx
 213  */
 214 static int process_audio_header_eacs(AVFormatContext *s)
 215 {
 216     EaDemuxContext *ea = s->priv_data;
 217     ByteIOContext *pb = s->pb;
 218     int compression_type;
 219
 220     ea->sample_rate  = ea->big_endian ? get_be32(pb) : get_le32(pb);
 221     ea->bytes        = get_byte(pb);   /* 1=8-bit, 2=16-bit */
 222     ea->num_channels = get_byte(pb);
 223     compression_type = get_byte(pb);
 224     url_fskip(pb, 13);
 225
 226     switch (compression_type) {
 227     case 0:
 228         switch (ea->bytes) {
 229         case 1: ea->audio_codec = CODEC_ID_PCM_S8;    break;
 230         case 2: ea->audio_codec = CODEC_ID_PCM_S16LE; break;
 231         }
 232         break;
 233     case 1: ea->audio_codec = CODEC_ID_PCM_MULAW; ea->bytes = 1; break;
 234     case 2: ea->audio_codec = CODEC_ID_ADPCM_IMA_EA_EACS; break;
 235     default:
 236         av_log (s, AV_LOG_ERROR, "unsupported stream type; audio compression_type=%i\n", compression_type);
 237     }
 238
 239     return 1;
 240 }
 241
 242 /*
 243  * Process SEAD sound header
 244  * return 1 if success, 0 if invalid format, otherwise AVERROR_xxx
 245  */
 246 static int process_audio_header_sead(AVFormatContext *s)
 247 {
 248     EaDemuxContext *ea = s->priv_data;
 249     ByteIOContext *pb = s->pb;
 250
 251     ea->sample_rate  = get_le32(pb);
 252     ea->bytes        = get_le32(pb);  /* 1=8-bit, 2=16-bit */
 253     ea->num_channels = get_le32(pb);
 254     ea->audio_codec  = CODEC_ID_ADPCM_IMA_EA_SEAD;
 255
 256     return 1;
 257 }
 258
 259 static int process_video_header_mdec(AVFormatContext *s)
 260 {
 261     EaDemuxContext *ea = s->priv_data;
 262     ByteIOContext *pb = s->pb;
 263     url_fskip(pb, 4);
 264     ea->width  = get_le16(pb);
 265     ea->height = get_le16(pb);
 266     ea->time_base = (AVRational){1,15};
 267     ea->video_codec = CODEC_ID_MDEC;
 268     return 1;
 269 }
 270
 271 static int process_video_header_vp6(AVFormatContext *s)
 272 {
 273     EaDemuxContext *ea = s->priv_data;
 274     ByteIOContext *pb = s->pb;
 275
 276     url_fskip(pb, 16);
 277     ea->time_base.den = get_le32(pb);
 278     ea->time_base.num = get_le32(pb);
 279     ea->video_codec = CODEC_ID_VP6;
 280
 281     return 1;
 282 }
 283
 284 /*
 285  * Process EA file header
 286  * Returns 1 if the EA file is valid and successfully opened, 0 otherwise
 287  */
 288 static int process_ea_header(AVFormatContext *s) {
 289     uint32_t blockid, size = 0;
 290     EaDemuxContext *ea = s->priv_data;
 291     ByteIOContext *pb = s->pb;
 292     int i;
 293
 294     for (i=0; i<5 && (!ea->audio_codec || !ea->video_codec); i++) {
 295         unsigned int startpos = url_ftell(pb);
 296         int err = 0;
 297
 298         blockid = get_le32(pb);
 299         size = get_le32(pb);
 300         if (i == 0)
 301             ea->big_endian = size > 0x000FFFFF;
 302         if (ea->big_endian)
 303             size = bswap_32(size);
 304
 305         switch (blockid) {
 306             case ISNh_TAG:
 307                 if (get_le32(pb) != EACS_TAG) {
 308                     av_log (s, AV_LOG_ERROR, "unknown 1SNh headerid\n");
 309                     return 0;
 310                 }
 311                 err = process_audio_header_eacs(s);
 312                 break;
 313
 314             case SCHl_TAG :
 315             case SHEN_TAG :
 316                 blockid = get_le32(pb);
 317                 if (blockid == GSTR_TAG) {
 318                     url_fskip(pb, 4);
 319                 } else if ((blockid & 0xFFFF)!=PT00_TAG) {
 320                     av_log (s, AV_LOG_ERROR, "unknown SCHl headerid\n");
 321                     return 0;
 322                 }
 323                 err = process_audio_header_elements(s);
 324                 break;
 325
 326             case SEAD_TAG:
 327                 err = process_audio_header_sead(s);
 328                 break;
 329
 330             case MVIh_TAG :
 331                 ea->video_codec = CODEC_ID_CMV;
 332                 ea->time_base = (AVRational){0,0};
 333                 break;
 334
 335             case kVGT_TAG:
 336                 ea->video_codec = CODEC_ID_TGV;
 337                 ea->time_base = (AVRational){0,0};
 338                 break;
 339
 340             case mTCD_TAG :
 341                 err = process_video_header_mdec(s);
 342                 break;
 343
 344             case MPCh_TAG:
 345                 ea->video_codec = CODEC_ID_MPEG2VIDEO;
 346                 break;
 347
 348             case pQGT_TAG:
 349             case TGQs_TAG:
 350                 ea->video_codec = CODEC_ID_TGQ;
 351                 break;
 352
 353             case pIQT_TAG:
 354                 ea->video_codec = CODEC_ID_TQI;
 355                 break;
 356
 357             case MVhd_TAG :
 358                 err = process_video_header_vp6(s);
 359                 break;
 360         }
 361
 362         if (err < 0) {
 363             av_log(s, AV_LOG_ERROR, "error parsing header: %i\n", err);
 364             return err;
 365         }
 366
 367         url_fseek(pb, startpos + size, SEEK_SET);
 368     }
 369
 370     url_fseek(pb, 0, SEEK_SET);
 371
 372     return 1;
 373 }
 374
 375
 376 static int ea_probe(AVProbeData *p)
 377 {
 378     switch (AV_RL32(&p->buf[0])) {
 379     case ISNh_TAG:
 380     case SCHl_TAG:
 381     case SEAD_TAG:
 382     case SHEN_TAG:
 383     case kVGT_TAG:
 384     case MADk_TAG:
 385     case MPCh_TAG:
 386     case MVhd_TAG:
 387     case MVIh_TAG:
 388         return AVPROBE_SCORE_MAX;
 389     }
 390     return 0;
 391 }
 392
 393 static int ea_read_header(AVFormatContext *s,
 394                           AVFormatParameters *ap)
 395 {
 396     EaDemuxContext *ea = s->priv_data;
 397     AVStream *st;
 398
 399     if (!process_ea_header(s))
 400         return AVERROR(EIO);
 401
 402     if (ea->video_codec) {
 403         /* initialize the video decoder stream */
 404         st = av_new_stream(s, 0);
 405         if (!st)
 406             return AVERROR(ENOMEM);
 407         ea->video_stream_index = st->index;
 408         st->codec->codec_type = CODEC_TYPE_VIDEO;
 409         st->codec->codec_id = ea->video_codec;
 410         st->codec->codec_tag = 0;  /* no fourcc */
 411         st->codec->time_base = ea->time_base;
 412         st->codec->width = ea->width;
 413         st->codec->height = ea->height;
 414     }
 415
 416     if (ea->audio_codec) {
 417         /* initialize the audio decoder stream */
 418         st = av_new_stream(s, 0);
 419         if (!st)
 420             return AVERROR(ENOMEM);
 421         av_set_pts_info(st, 33, 1, ea->sample_rate);
 422         st->codec->codec_type = CODEC_TYPE_AUDIO;
 423         st->codec->codec_id = ea->audio_codec;
 424         st->codec->codec_tag = 0;  /* no tag */
 425         st->codec->channels = ea->num_channels;
 426         st->codec->sample_rate = ea->sample_rate;
 427         st->codec->bits_per_coded_sample = ea->bytes * 8;
 428         st->codec->bit_rate = st->codec->channels * st->codec->sample_rate *
 429             st->codec->bits_per_coded_sample / 4;
 430         st->codec->block_align = st->codec->channels*st->codec->bits_per_coded_sample;
 431         ea->audio_stream_index = st->index;
 432         ea->audio_frame_counter = 0;
 433     }
 434
 435     return 1;
 436 }
 437
 438 static int ea_read_packet(AVFormatContext *s,
 439                           AVPacket *pkt)
 440 {
 441     EaDemuxContext *ea = s->priv_data;
 442     ByteIOContext *pb = s->pb;
 443     int ret = 0;
 444     int packet_read = 0;
 445     unsigned int chunk_type, chunk_size;
 446     int key = 0;
 447     int av_uninit(num_samples);
 448
 449     while (!packet_read) {
 450         chunk_type = get_le32(pb);
 451         chunk_size = (ea->big_endian ? get_be32(pb) : get_le32(pb)) - 8;
 452
 453         switch (chunk_type) {
 454         /* audio data */
 455         case ISNh_TAG:
 456             /* header chunk also contains data; skip over the header portion*/
 457             url_fskip(pb, 32);
 458             chunk_size -= 32;
 459         case ISNd_TAG:
 460         case SCDl_TAG:
 461         case SNDC_TAG:
 462         case SDEN_TAG:
 463             if (!ea->audio_codec) {
 464                 url_fskip(pb, chunk_size);
 465                 break;
 466             } else if (ea->audio_codec == CODEC_ID_PCM_S16LE_PLANAR ||
 467                        ea->audio_codec == CODEC_ID_MP3) {
 468                 num_samples = get_le32(pb);
 469                 url_fskip(pb, 8);
 470                 chunk_size -= 12;
 471             }
 472             ret = av_get_packet(pb, pkt, chunk_size);
 473             if (ret != chunk_size)
 474                 ret = AVERROR(EIO);
 475             else {
 476                     pkt->stream_index = ea->audio_stream_index;
 477                     pkt->pts = 90000;
 478                     pkt->pts *= ea->audio_frame_counter;
 479                     pkt->pts /= ea->sample_rate;
 480
 481                     switch (ea->audio_codec) {
 482                     case CODEC_ID_ADPCM_EA:
 483                     /* 2 samples/byte, 1 or 2 samples per frame depending
 484                      * on stereo; chunk also has 12-byte header */
 485                     ea->audio_frame_counter += ((chunk_size - 12) * 2) /
 486                         ea->num_channels;
 487                         break;
 488                     case CODEC_ID_PCM_S16LE_PLANAR:
 489                     case CODEC_ID_MP3:
 490                         ea->audio_frame_counter += num_samples;
 491                         break;
 492                     default:
 493                         ea->audio_frame_counter += chunk_size /
 494                             (ea->bytes * ea->num_channels);
 495                     }
 496             }
 497
 498             packet_read = 1;
 499             break;
 500
 501         /* ending tag */
 502         case 0:
 503         case ISNe_TAG:
 504         case SCEl_TAG:
 505         case SEND_TAG:
 506         case SEEN_TAG:
 507             ret = AVERROR(EIO);
 508             packet_read = 1;
 509             break;
 510
 511         case MVIh_TAG:
 512         case kVGT_TAG:
 513         case pQGT_TAG:
 514         case TGQs_TAG:
 515             key = PKT_FLAG_KEY;
 516         case MVIf_TAG:
 517         case fVGT_TAG:
 518             url_fseek(pb, -8, SEEK_CUR);     // include chunk preamble
 519             chunk_size += 8;
 520             goto get_video_packet;
 521
 522         case mTCD_TAG:
 523             url_fseek(pb, 8, SEEK_CUR);  // skip ea dct header
 524             chunk_size -= 8;
 525             goto get_video_packet;
 526
 527         case MV0K_TAG:
 528         case MPCh_TAG:
 529         case pIQT_TAG:
 530             key = PKT_FLAG_KEY;
 531         case MV0F_TAG:
 532 get_video_packet:
 533             ret = av_get_packet(pb, pkt, chunk_size);
 534             if (ret != chunk_size)
 535                 ret = AVERROR_IO;
 536             else {
 537                 pkt->stream_index = ea->video_stream_index;
 538                 pkt->flags |= key;
 539             }
 540             packet_read = 1;
 541             break;
 542
 543         default:
 544             url_fseek(pb, chunk_size, SEEK_CUR);
 545             break;
 546         }
 547     }
 548
 549     return ret;
 550 }
 551
 552 AVInputFormat ea_demuxer = {
 553     "ea",
 554     NULL_IF_CONFIG_SMALL("Electronic Arts Multimedia Format"),
 555     sizeof(EaDemuxContext),
 556     ea_probe,
 557     ea_read_header,
 558     ea_read_packet,
 559 };