Skip to content
This repository
branch: master
Fetching contributors…

Cannot retrieve contributors at this time

file 685 lines (615 sloc) 21.623 kb
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685
/* Electronic Arts Multimedia File Demuxer
* Copyright (c) 2004 The ffmpeg Project
* Copyright (c) 2006-2008 Peter Ross
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/

/**
* @file
* Electronic Arts Multimedia file demuxer (WVE/UV2/etc.)
* by Robin Kay (komadori at gekkou.co.uk)
*/

#include "libavutil/intreadwrite.h"
#include "avformat.h"
#include "internal.h"

#define SCHl_TAG MKTAG('S', 'C', 'H', 'l')
#define SEAD_TAG MKTAG('S', 'E', 'A', 'D') /* Sxxx header */
#define SNDC_TAG MKTAG('S', 'N', 'D', 'C') /* Sxxx data */
#define SEND_TAG MKTAG('S', 'E', 'N', 'D') /* Sxxx end */
#define SHEN_TAG MKTAG('S', 'H', 'E', 'N') /* SxEN header */
#define SDEN_TAG MKTAG('S', 'D', 'E', 'N') /* SxEN data */
#define SEEN_TAG MKTAG('S', 'E', 'E', 'N') /* SxEN end */
#define ISNh_TAG MKTAG('1', 'S', 'N', 'h') /* 1SNx header */
#define EACS_TAG MKTAG('E', 'A', 'C', 'S')
#define ISNd_TAG MKTAG('1', 'S', 'N', 'd') /* 1SNx data */
#define ISNe_TAG MKTAG('1', 'S', 'N', 'e') /* 1SNx end */
#define PT00_TAG MKTAG('P', 'T', 0x0, 0x0)
#define GSTR_TAG MKTAG('G', 'S', 'T', 'R')
#define SCDl_TAG MKTAG('S', 'C', 'D', 'l')
#define SCEl_TAG MKTAG('S', 'C', 'E', 'l')
#define kVGT_TAG MKTAG('k', 'V', 'G', 'T') /* TGV I-frame */
#define fVGT_TAG MKTAG('f', 'V', 'G', 'T') /* TGV P-frame */
#define mTCD_TAG MKTAG('m', 'T', 'C', 'D') /* MDEC */
#define MADk_TAG MKTAG('M', 'A', 'D', 'k') /* MAD I-frame */
#define MADm_TAG MKTAG('M', 'A', 'D', 'm') /* MAD P-frame */
#define MADe_TAG MKTAG('M', 'A', 'D', 'e') /* MAD lqp-frame */
#define MPCh_TAG MKTAG('M', 'P', 'C', 'h') /* MPEG-2 */
#define TGQs_TAG MKTAG('T', 'G', 'Q', 's') /* TGQ I-frame (appears in .TGQ files) */
#define pQGT_TAG MKTAG('p', 'Q', 'G', 'T') /* TGQ I-frame (appears in .UV files) */
#define pIQT_TAG MKTAG('p', 'I', 'Q', 'T') /* TQI/UV2 I-frame (.UV2/.WVE) */
#define MVhd_TAG MKTAG('M', 'V', 'h', 'd')
#define MV0K_TAG MKTAG('M', 'V', '0', 'K')
#define MV0F_TAG MKTAG('M', 'V', '0', 'F')
#define MVIh_TAG MKTAG('M', 'V', 'I', 'h') /* CMV header */
#define MVIf_TAG MKTAG('M', 'V', 'I', 'f') /* CMV I-frame */

typedef struct EaDemuxContext {
    int big_endian;

    enum AVCodecID video_codec;
    AVRational time_base;
    int width, height;
    int nb_frames;
    int video_stream_index;

    enum AVCodecID audio_codec;
    int audio_stream_index;

    int bytes;
    int sample_rate;
    int num_channels;
    int num_samples;
} EaDemuxContext;

static uint32_t read_arbitrary(AVIOContext *pb)
{
    uint8_t size, byte;
    int i;
    uint32_t word;

    size = avio_r8(pb);

    word = 0;
    for (i = 0; i < size; i++) {
        byte = avio_r8(pb);
        word <<= 8;
        word |= byte;
    }

    return word;
}

static int process_audio_header_elements(AVFormatContext *s)
{
    EaDemuxContext *ea = s->priv_data;
    AVIOContext *pb = s->pb;
    int in_header = 1;
    int compression_type = -1, revision = -1, revision2 = -1;

    ea->bytes = 2;
    ea->sample_rate = -1;
    ea->num_channels = 1;

    while (!url_feof(pb) && in_header) {
        int in_subheader;
        uint8_t byte;
        byte = avio_r8(pb);

        switch (byte) {
        case 0xFD:
            av_log(s, AV_LOG_DEBUG, "entered audio subheader\n");
            in_subheader = 1;
            while (!url_feof(pb) && in_subheader) {
                uint8_t subbyte;
                subbyte = avio_r8(pb);

                switch (subbyte) {
                case 0x80:
                    revision = read_arbitrary(pb);
                    av_log(s, AV_LOG_DEBUG,
                           "revision (element 0x80) set to 0x%08x\n", revision);
                    break;
                case 0x82:
                    ea->num_channels = read_arbitrary(pb);
                    av_log(s, AV_LOG_DEBUG,
                           "num_channels (element 0x82) set to 0x%08x\n",
                           ea->num_channels);
                    break;
                case 0x83:
                    compression_type = read_arbitrary(pb);
                    av_log(s, AV_LOG_DEBUG,
                           "compression_type (element 0x83) set to 0x%08x\n",
                           compression_type);
                    break;
                case 0x84:
                    ea->sample_rate = read_arbitrary(pb);
                    av_log(s, AV_LOG_DEBUG,
                           "sample_rate (element 0x84) set to %i\n",
                           ea->sample_rate);
                    break;
                case 0x85:
                    ea->num_samples = read_arbitrary(pb);
                    av_log(s, AV_LOG_DEBUG,
                           "num_samples (element 0x85) set to 0x%08x\n",
                           ea->num_samples);
                    break;
                case 0x8A:
                    av_log(s, AV_LOG_DEBUG,
                           "element 0x%02x set to 0x%08x\n",
                           subbyte, read_arbitrary(pb));
                    av_log(s, AV_LOG_DEBUG, "exited audio subheader\n");
                    in_subheader = 0;
                    break;
                case 0xA0:
                    revision2 = read_arbitrary(pb);
                    av_log(s, AV_LOG_DEBUG,
                           "revision2 (element 0xA0) set to 0x%08x\n",
                           revision2);
                    break;
                case 0xFF:
                    av_log(s, AV_LOG_DEBUG,
                           "end of header block reached (within audio subheader)\n");
                    in_subheader = 0;
                    in_header = 0;
                    break;
                default:
                    av_log(s, AV_LOG_DEBUG,
                           "element 0x%02x set to 0x%08x\n",
                           subbyte, read_arbitrary(pb));
                    break;
                }
            }
            break;
        case 0xFF:
            av_log(s, AV_LOG_DEBUG, "end of header block reached\n");
            in_header = 0;
            break;
        default:
            av_log(s, AV_LOG_DEBUG,
                   "header element 0x%02x set to 0x%08x\n",
                   byte, read_arbitrary(pb));
            break;
        }
    }

    switch (compression_type) {
    case 0:
        ea->audio_codec = AV_CODEC_ID_PCM_S16LE;
        break;
    case 7:
        ea->audio_codec = AV_CODEC_ID_ADPCM_EA;
        break;
    case -1:
        switch (revision) {
        case 1:
            ea->audio_codec = AV_CODEC_ID_ADPCM_EA_R1;
            break;
        case 2:
            ea->audio_codec = AV_CODEC_ID_ADPCM_EA_R2;
            break;
        case 3:
            ea->audio_codec = AV_CODEC_ID_ADPCM_EA_R3;
            break;
        case -1:
            break;
        default:
            avpriv_request_sample(s, "stream type; revision=%i", revision);
            return 0;
        }
        switch (revision2) {
        case 8:
            ea->audio_codec = AV_CODEC_ID_PCM_S16LE_PLANAR;
            break;
        case 10:
            switch (revision) {
            case -1:
            case 2: ea->audio_codec = AV_CODEC_ID_ADPCM_EA_R1; break;
            case 3: ea->audio_codec = AV_CODEC_ID_ADPCM_EA_R2; break;
            default:
                avpriv_request_sample(s, "stream type; revision=%i, revision2=%i", revision, revision2);
                return 0;
            }
            break;
        case 16:
            ea->audio_codec = AV_CODEC_ID_MP3;
            break;
        case -1:
            break;
        default:
            ea->audio_codec = AV_CODEC_ID_NONE;
            avpriv_request_sample(s, "stream type; revision2=%i", revision2);
            return 0;
        }
        break;
    default:
        avpriv_request_sample(s,
                              "stream type; compression_type=%i",
                              compression_type);
        return 0;
    }

    if (ea->sample_rate == -1)
        ea->sample_rate = revision == 3 ? 48000 : 22050;

    return 1;
}

static void process_audio_header_eacs(AVFormatContext *s)
{
    EaDemuxContext *ea = s->priv_data;
    AVIOContext *pb = s->pb;
    int compression_type;

    ea->sample_rate = ea->big_endian ? avio_rb32(pb) : avio_rl32(pb);
    ea->bytes = avio_r8(pb); /* 1=8-bit, 2=16-bit */
    ea->num_channels = avio_r8(pb);
    compression_type = avio_r8(pb);
    avio_skip(pb, 13);

    switch (compression_type) {
    case 0:
        switch (ea->bytes) {
        case 1:
            ea->audio_codec = AV_CODEC_ID_PCM_S8;
            break;
        case 2:
            ea->audio_codec = AV_CODEC_ID_PCM_S16LE;
            break;
        }
        break;
    case 1:
        ea->audio_codec = AV_CODEC_ID_PCM_MULAW;
        ea->bytes = 1;
        break;
    case 2:
        ea->audio_codec = AV_CODEC_ID_ADPCM_IMA_EA_EACS;
        break;
    default:
        avpriv_request_sample(s,
                              "stream type; audio compression_type=%i",
                              compression_type);
    }
}

static void process_audio_header_sead(AVFormatContext *s)
{
    EaDemuxContext *ea = s->priv_data;
    AVIOContext *pb = s->pb;

    ea->sample_rate = avio_rl32(pb);
    ea->bytes = avio_rl32(pb); /* 1=8-bit, 2=16-bit */
    ea->num_channels = avio_rl32(pb);
    ea->audio_codec = AV_CODEC_ID_ADPCM_IMA_EA_SEAD;
}

static void process_video_header_mdec(AVFormatContext *s)
{
    EaDemuxContext *ea = s->priv_data;
    AVIOContext *pb = s->pb;
    avio_skip(pb, 4);
    ea->width = avio_rl16(pb);
    ea->height = avio_rl16(pb);
    ea->time_base = (AVRational) { 1, 15 };
    ea->video_codec = AV_CODEC_ID_MDEC;
}

static int process_video_header_vp6(AVFormatContext *s)
{
    EaDemuxContext *ea = s->priv_data;
    AVIOContext *pb = s->pb;

    avio_skip(pb, 8);
    ea->nb_frames = avio_rl32(pb);
    avio_skip(pb, 4);
    ea->time_base.den = avio_rl32(pb);
    ea->time_base.num = avio_rl32(pb);
    if (ea->time_base.den <= 0 || ea->time_base.num <= 0) {
        av_log(s, AV_LOG_ERROR, "Timebase is invalid\n");
        return AVERROR_INVALIDDATA;
    }
    ea->video_codec = AV_CODEC_ID_VP6;

    return 1;
}

static void process_video_header_cmv(AVFormatContext *s)
{
    EaDemuxContext *ea = s->priv_data;
    int fps;

    avio_skip(s->pb, 10);
    fps = avio_rl16(s->pb);
    if (fps)
        ea->time_base = (AVRational) { 1, fps };
    ea->video_codec = AV_CODEC_ID_CMV;
}

/* Process EA file header.
* Return 1 if the EA file is valid and successfully opened, 0 otherwise. */
static int process_ea_header(AVFormatContext *s)
{
    uint32_t blockid, size = 0;
    EaDemuxContext *ea = s->priv_data;
    AVIOContext *pb = s->pb;
    int i;

    for (i = 0; i < 5 && (!ea->audio_codec || !ea->video_codec); i++) {
        uint64_t startpos = avio_tell(pb);
        int err = 0;

        blockid = avio_rl32(pb);
        size = avio_rl32(pb);
        if (i == 0)
            ea->big_endian = size > av_bswap32(size);
        if (ea->big_endian)
            size = av_bswap32(size);

        if (size < 8) {
            av_log(s, AV_LOG_ERROR, "chunk size too small\n");
            return AVERROR_INVALIDDATA;
        }

        switch (blockid) {
        case ISNh_TAG:
            if (avio_rl32(pb) != EACS_TAG) {
                avpriv_request_sample(s, "unknown 1SNh headerid");
                return 0;
            }
            process_audio_header_eacs(s);
            break;

        case SCHl_TAG:
        case SHEN_TAG:
            blockid = avio_rl32(pb);
            if (blockid == GSTR_TAG) {
                avio_skip(pb, 4);
            } else if ((blockid & 0xFFFF) != PT00_TAG) {
                avpriv_request_sample(s, "unknown SCHl headerid");
                return 0;
            }
            err = process_audio_header_elements(s);
            break;

        case SEAD_TAG:
            process_audio_header_sead(s);
            break;

        case MVIh_TAG:
            process_video_header_cmv(s);
            break;

        case kVGT_TAG:
            ea->video_codec = AV_CODEC_ID_TGV;
            break;

        case mTCD_TAG:
            process_video_header_mdec(s);
            break;

        case MPCh_TAG:
            ea->video_codec = AV_CODEC_ID_MPEG2VIDEO;
            break;

        case pQGT_TAG:
        case TGQs_TAG:
            ea->video_codec = AV_CODEC_ID_TGQ;
            break;

        case pIQT_TAG:
            ea->video_codec = AV_CODEC_ID_TQI;
            break;

        case MADk_TAG:
            ea->video_codec = AV_CODEC_ID_MAD;
            break;

        case MVhd_TAG:
            err = process_video_header_vp6(s);
            break;
        }

        if (err < 0) {
            av_log(s, AV_LOG_ERROR, "error parsing header: %i\n", err);
            return err;
        }

        avio_seek(pb, startpos + size, SEEK_SET);
    }

    avio_seek(pb, 0, SEEK_SET);

    return 1;
}

static int ea_probe(AVProbeData *p)
{
    unsigned big_endian, size;

    switch (AV_RL32(&p->buf[0])) {
    case ISNh_TAG:
    case SCHl_TAG:
    case SEAD_TAG:
    case SHEN_TAG:
    case kVGT_TAG:
    case MADk_TAG:
    case MPCh_TAG:
    case MVhd_TAG:
    case MVIh_TAG:
        break;
    default:
        return 0;
    }
    size = AV_RL32(&p->buf[4]);
    big_endian = size > 0x000FFFFF;
    if (big_endian)
        size = av_bswap32(size);
    if (size > 0xfffff || size < 8)
        return 0;

    return AVPROBE_SCORE_MAX;
}

static int ea_read_header(AVFormatContext *s)
{
    EaDemuxContext *ea = s->priv_data;
    AVStream *st;

    if (process_ea_header(s)<=0)
        return AVERROR(EIO);

    if (ea->video_codec) {
        /* initialize the video decoder stream */
        st = avformat_new_stream(s, NULL);
        if (!st)
            return AVERROR(ENOMEM);
        ea->video_stream_index = st->index;
        st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
        st->codec->codec_id = ea->video_codec;
        // parsing is necessary to make FFmpeg generate correct timestamps
        if (st->codec->codec_id == AV_CODEC_ID_MPEG2VIDEO)
            st->need_parsing = AVSTREAM_PARSE_HEADERS;
        st->codec->codec_tag = 0; /* no fourcc */
        st->codec->width = ea->width;
        st->codec->height = ea->height;
        st->duration = st->nb_frames = ea->nb_frames;
        if (ea->time_base.num)
            avpriv_set_pts_info(st, 64, ea->time_base.num, ea->time_base.den);
        st->r_frame_rate =
        st->avg_frame_rate = av_inv_q(ea->time_base);
    }

    if (ea->audio_codec) {
        if (ea->num_channels <= 0 || ea->num_channels > 2) {
            av_log(s, AV_LOG_WARNING,
                   "Unsupported number of channels: %d\n", ea->num_channels);
            ea->audio_codec = 0;
            return 1;
        }
        if (ea->sample_rate <= 0) {
            av_log(s, AV_LOG_ERROR,
                   "Unsupported sample rate: %d\n", ea->sample_rate);
            ea->audio_codec = 0;
            return 1;
        }
        if (ea->bytes <= 0) {
            av_log(s, AV_LOG_ERROR,
                   "Invalid number of bytes per sample: %d\n", ea->bytes);
            ea->audio_codec = AV_CODEC_ID_NONE;
            return 1;
        }

        /* initialize the audio decoder stream */
        st = avformat_new_stream(s, NULL);
        if (!st)
            return AVERROR(ENOMEM);
        avpriv_set_pts_info(st, 33, 1, ea->sample_rate);
        st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
        st->codec->codec_id = ea->audio_codec;
        st->codec->codec_tag = 0; /* no tag */
        st->codec->channels = ea->num_channels;
        st->codec->sample_rate = ea->sample_rate;
        st->codec->bits_per_coded_sample = ea->bytes * 8;
        st->codec->bit_rate = st->codec->channels *
                                           st->codec->sample_rate *
                                           st->codec->bits_per_coded_sample / 4;
        st->codec->block_align = st->codec->channels *
                                           st->codec->bits_per_coded_sample;
        ea->audio_stream_index = st->index;
        st->start_time = 0;
    }

    return 1;
}

static int ea_read_packet(AVFormatContext *s, AVPacket *pkt)
{
    EaDemuxContext *ea = s->priv_data;
    AVIOContext *pb = s->pb;
    int partial_packet = 0;
    unsigned int chunk_type, chunk_size;
    int ret = 0, packet_read = 0, key = 0;
    int av_uninit(num_samples);

    while (!packet_read || partial_packet) {
        chunk_type = avio_rl32(pb);
        chunk_size = ea->big_endian ? avio_rb32(pb) : avio_rl32(pb);
        if (chunk_size <= 8)
            return AVERROR_INVALIDDATA;
        chunk_size -= 8;

        switch (chunk_type) {
        /* audio data */
        case ISNh_TAG:
            /* header chunk also contains data; skip over the header portion */
            if (chunk_size < 32)
                return AVERROR_INVALIDDATA;
            avio_skip(pb, 32);
            chunk_size -= 32;
        case ISNd_TAG:
        case SCDl_TAG:
        case SNDC_TAG:
        case SDEN_TAG:
            if (!ea->audio_codec) {
                avio_skip(pb, chunk_size);
                break;
            } else if (ea->audio_codec == AV_CODEC_ID_PCM_S16LE_PLANAR ||
                       ea->audio_codec == AV_CODEC_ID_MP3) {
                num_samples = avio_rl32(pb);
                avio_skip(pb, 8);
                chunk_size -= 12;
            }
            if (partial_packet) {
                avpriv_request_sample(s, "video header followed by audio packet");
                av_free_packet(pkt);
                partial_packet = 0;
            }
            ret = av_get_packet(pb, pkt, chunk_size);
            if (ret < 0)
                return ret;
            pkt->stream_index = ea->audio_stream_index;

            switch (ea->audio_codec) {
            case AV_CODEC_ID_ADPCM_EA:
            case AV_CODEC_ID_ADPCM_EA_R1:
            case AV_CODEC_ID_ADPCM_EA_R2:
            case AV_CODEC_ID_ADPCM_IMA_EA_EACS:
            case AV_CODEC_ID_ADPCM_EA_R3:
                if (pkt->size < 4) {
                    av_log(s, AV_LOG_ERROR, "Packet is too short\n");
                    av_free_packet(pkt);
                    return AVERROR_INVALIDDATA;
                }
                if (ea->audio_codec == AV_CODEC_ID_ADPCM_EA_R3)
                    pkt->duration = AV_RB32(pkt->data);
                else
                    pkt->duration = AV_RL32(pkt->data);
                break;
            case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
                pkt->duration = ret * 2 / ea->num_channels;
                break;
            case AV_CODEC_ID_PCM_S16LE_PLANAR:
            case AV_CODEC_ID_MP3:
                pkt->duration = num_samples;
                break;
            default:
                pkt->duration = chunk_size / (ea->bytes * ea->num_channels);
            }

            packet_read = 1;
            break;

        /* ending tag */
        case 0:
        case ISNe_TAG:
        case SCEl_TAG:
        case SEND_TAG:
        case SEEN_TAG:
            ret = AVERROR(EIO);
            packet_read = 1;
            break;

        case MVIh_TAG:
        case kVGT_TAG:
        case pQGT_TAG:
        case TGQs_TAG:
        case MADk_TAG:
            key = AV_PKT_FLAG_KEY;
        case MVIf_TAG:
        case fVGT_TAG:
        case MADm_TAG:
        case MADe_TAG:
            avio_seek(pb, -8, SEEK_CUR); // include chunk preamble
            chunk_size += 8;
            goto get_video_packet;

        case mTCD_TAG:
            avio_skip(pb, 8); // skip ea DCT header
            chunk_size -= 8;
            goto get_video_packet;

        case MV0K_TAG:
        case MPCh_TAG:
        case pIQT_TAG:
            key = AV_PKT_FLAG_KEY;
        case MV0F_TAG:
get_video_packet:
            if (partial_packet) {
                ret = av_append_packet(pb, pkt, chunk_size);
            } else
                ret = av_get_packet(pb, pkt, chunk_size);
            if (ret < 0) {
                packet_read = 1;
                break;
            }
            partial_packet = chunk_type == MVIh_TAG;
            pkt->stream_index = ea->video_stream_index;
            pkt->flags |= key;
            packet_read = 1;
            break;

        default:
            avio_skip(pb, chunk_size);
            break;
        }
    }

    if (ret < 0 && partial_packet)
        av_free_packet(pkt);
    return ret;
}

AVInputFormat ff_ea_demuxer = {
    .name = "ea",
    .long_name = NULL_IF_CONFIG_SMALL("Electronic Arts Multimedia"),
    .priv_data_size = sizeof(EaDemuxContext),
    .read_probe = ea_probe,
    .read_header = ea_read_header,
    .read_packet = ea_read_packet,
};
Something went wrong with that request. Please try again.