DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Mercurial (777e60ca8853)

VCS Links

Line Code
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941
/*
 *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */


#include <stdlib.h>
#include <string.h>
#include "vp8_rtcd.h"
#include "vpx/vpx_decoder.h"
#include "vpx/vp8dx.h"
#include "vpx/internal/vpx_codec_internal.h"
#include "vpx_version.h"
#include "common/onyxd.h"
#include "decoder/onyxd_int.h"
#include "common/alloccommon.h"
#include "vpx_mem/vpx_mem.h"
#if CONFIG_ERROR_CONCEALMENT
#include "decoder/error_concealment.h"
#endif
#include "decoder/decoderthreading.h"

#define VP8_CAP_POSTPROC (CONFIG_POSTPROC ? VPX_CODEC_CAP_POSTPROC : 0)
#define VP8_CAP_ERROR_CONCEALMENT (CONFIG_ERROR_CONCEALMENT ? \
                                    VPX_CODEC_CAP_ERROR_CONCEALMENT : 0)

typedef vpx_codec_stream_info_t  vp8_stream_info_t;

/* Structures for handling memory allocations */
typedef enum
{
    VP8_SEG_ALG_PRIV     = 256,
    VP8_SEG_MAX
} mem_seg_id_t;
#define NELEMENTS(x) ((int)(sizeof(x)/sizeof(x[0])))

static unsigned long vp8_priv_sz(const vpx_codec_dec_cfg_t *si, vpx_codec_flags_t);

static const mem_req_t vp8_mem_req_segs[] =
{
    {VP8_SEG_ALG_PRIV,    0, 8, VPX_CODEC_MEM_ZERO, vp8_priv_sz},
    {VP8_SEG_MAX, 0, 0, 0, NULL}
};

struct vpx_codec_alg_priv
{
    vpx_codec_priv_t        base;
    vpx_codec_mmap_t        mmaps[NELEMENTS(vp8_mem_req_segs)-1];
    vpx_codec_dec_cfg_t     cfg;
    vp8_stream_info_t       si;
    int                     defer_alloc;
    int                     decoder_init;
    int                     postproc_cfg_set;
    vp8_postproc_cfg_t      postproc_cfg;
#if CONFIG_POSTPROC_VISUALIZER
    unsigned int            dbg_postproc_flag;
    int                     dbg_color_ref_frame_flag;
    int                     dbg_color_mb_modes_flag;
    int                     dbg_color_b_modes_flag;
    int                     dbg_display_mv_flag;
#endif
    vp8_decrypt_cb          *decrypt_cb;
    void                    *decrypt_state;
    vpx_image_t             img;
    int                     img_setup;
    struct frame_buffers    yv12_frame_buffers;
    void                    *user_priv;
    FRAGMENT_DATA           fragments;
};

static unsigned long vp8_priv_sz(const vpx_codec_dec_cfg_t *si, vpx_codec_flags_t flags)
{
    /* Although this declaration is constant, we can't use it in the requested
     * segments list because we want to define the requested segments list
     * before defining the private type (so that the number of memory maps is
     * known)
     */
    (void)si;
    return sizeof(vpx_codec_alg_priv_t);
}

static void vp8_init_ctx(vpx_codec_ctx_t *ctx, const vpx_codec_mmap_t *mmap)
{
    int i;

    ctx->priv = mmap->base;
    ctx->priv->sz = sizeof(*ctx->priv);
    ctx->priv->iface = ctx->iface;
    ctx->priv->alg_priv = mmap->base;

    for (i = 0; i < NELEMENTS(ctx->priv->alg_priv->mmaps); i++)
        ctx->priv->alg_priv->mmaps[i].id = vp8_mem_req_segs[i].id;

    ctx->priv->alg_priv->mmaps[0] = *mmap;
    ctx->priv->alg_priv->si.sz = sizeof(ctx->priv->alg_priv->si);
    ctx->priv->alg_priv->decrypt_cb = NULL;
    ctx->priv->alg_priv->decrypt_state = NULL;
    ctx->priv->init_flags = ctx->init_flags;

    if (ctx->config.dec)
    {
        /* Update the reference to the config structure to an internal copy. */
        ctx->priv->alg_priv->cfg = *ctx->config.dec;
        ctx->config.dec = &ctx->priv->alg_priv->cfg;
    }
}

static void vp8_finalize_mmaps(vpx_codec_alg_priv_t *ctx)
{
    /* nothing to clean up */
}

static vpx_codec_err_t vp8_init(vpx_codec_ctx_t *ctx,
                                vpx_codec_priv_enc_mr_cfg_t *data)
{
    vpx_codec_err_t        res = VPX_CODEC_OK;
    (void) data;

    vp8_rtcd();

    /* This function only allocates space for the vpx_codec_alg_priv_t
     * structure. More memory may be required at the time the stream
     * information becomes known.
     */
    if (!ctx->priv)
    {
        vpx_codec_mmap_t mmap;

        mmap.id = vp8_mem_req_segs[0].id;
        mmap.sz = sizeof(vpx_codec_alg_priv_t);
        mmap.align = vp8_mem_req_segs[0].align;
        mmap.flags = vp8_mem_req_segs[0].flags;

        res = vpx_mmap_alloc(&mmap);
        if (res != VPX_CODEC_OK) return res;

        vp8_init_ctx(ctx, &mmap);

        /* initialize number of fragments to zero */
        ctx->priv->alg_priv->fragments.count = 0;
        /* is input fragments enabled? */
        ctx->priv->alg_priv->fragments.enabled =
                (ctx->priv->alg_priv->base.init_flags &
                    VPX_CODEC_USE_INPUT_FRAGMENTS);

        ctx->priv->alg_priv->defer_alloc = 1;
        /*post processing level initialized to do nothing */
    }

    ctx->priv->alg_priv->yv12_frame_buffers.use_frame_threads =
            (ctx->priv->alg_priv->base.init_flags &
                    VPX_CODEC_USE_FRAME_THREADING);

    /* for now, disable frame threading */
    ctx->priv->alg_priv->yv12_frame_buffers.use_frame_threads = 0;

    if(ctx->priv->alg_priv->yv12_frame_buffers.use_frame_threads &&
            (( ctx->priv->alg_priv->base.init_flags &
                            VPX_CODEC_USE_ERROR_CONCEALMENT)
                    || ( ctx->priv->alg_priv->base.init_flags &
                            VPX_CODEC_USE_INPUT_FRAGMENTS) ) )
    {
        /* row-based threading, error concealment, and input fragments will
         * not be supported when using frame-based threading */
        res = VPX_CODEC_INVALID_PARAM;
    }

    return res;
}

static vpx_codec_err_t vp8_destroy(vpx_codec_alg_priv_t *ctx)
{
    int i;

    vp8_remove_decoder_instances(&ctx->yv12_frame_buffers);

    for (i = NELEMENTS(ctx->mmaps) - 1; i >= 0; i--)
    {
        if (ctx->mmaps[i].dtor)
            ctx->mmaps[i].dtor(&ctx->mmaps[i]);
    }

    return VPX_CODEC_OK;
}

static vpx_codec_err_t vp8_peek_si_internal(const uint8_t *data,
                                            unsigned int data_sz,
                                            vpx_codec_stream_info_t *si,
                                            vp8_decrypt_cb *decrypt_cb,
                                            void *decrypt_state)
{
    vpx_codec_err_t res = VPX_CODEC_OK;

    if(data + data_sz <= data)
    {
        res = VPX_CODEC_INVALID_PARAM;
    }
    else
    {
        /* Parse uncompresssed part of key frame header.
         * 3 bytes:- including version, frame type and an offset
         * 3 bytes:- sync code (0x9d, 0x01, 0x2a)
         * 4 bytes:- including image width and height in the lowest 14 bits
         *           of each 2-byte value.
         */
        uint8_t clear_buffer[10];
        const uint8_t *clear = data;
        if (decrypt_cb)
        {
            int n = data_sz > 10 ? 10 : data_sz;
            decrypt_cb(decrypt_state, data, clear_buffer, n);
            clear = clear_buffer;
        }
        si->is_kf = 0;

        if (data_sz >= 10 && !(clear[0] & 0x01))  /* I-Frame */
        {
            si->is_kf = 1;

            /* vet via sync code */
            if (clear[3] != 0x9d || clear[4] != 0x01 || clear[5] != 0x2a)
                res = VPX_CODEC_UNSUP_BITSTREAM;

            si->w = (clear[6] | (clear[7] << 8)) & 0x3fff;
            si->h = (clear[8] | (clear[9] << 8)) & 0x3fff;

            /*printf("w=%d, h=%d\n", si->w, si->h);*/
            if (!(si->h | si->w))
                res = VPX_CODEC_UNSUP_BITSTREAM;
        }
        else
        {
            res = VPX_CODEC_UNSUP_BITSTREAM;
        }
    }

    return res;
}

static vpx_codec_err_t vp8_peek_si(const uint8_t *data,
                                   unsigned int data_sz,
                                   vpx_codec_stream_info_t *si) {
    return vp8_peek_si_internal(data, data_sz, si, NULL, NULL);
}

static vpx_codec_err_t vp8_get_si(vpx_codec_alg_priv_t    *ctx,
                                  vpx_codec_stream_info_t *si)
{

    unsigned int sz;

    if (si->sz >= sizeof(vp8_stream_info_t))
        sz = sizeof(vp8_stream_info_t);
    else
        sz = sizeof(vpx_codec_stream_info_t);

    memcpy(si, &ctx->si, sz);
    si->sz = sz;

    return VPX_CODEC_OK;
}


static vpx_codec_err_t
update_error_state(vpx_codec_alg_priv_t                 *ctx,
                   const struct vpx_internal_error_info *error)
{
    vpx_codec_err_t res;

    if ((res = error->error_code))
        ctx->base.err_detail = error->has_detail
                               ? error->detail
                               : NULL;

    return res;
}

static void yuvconfig2image(vpx_image_t               *img,
                            const YV12_BUFFER_CONFIG  *yv12,
                            void                      *user_priv)
{
    /** vpx_img_wrap() doesn't allow specifying independent strides for
      * the Y, U, and V planes, nor other alignment adjustments that
      * might be representable by a YV12_BUFFER_CONFIG, so we just
      * initialize all the fields.*/
    img->fmt = VPX_IMG_FMT_I420;
    img->w = yv12->y_stride;
    img->h = (yv12->y_height + 2 * VP8BORDERINPIXELS + 15) & ~15;
    img->d_w = yv12->y_width;
    img->d_h = yv12->y_height;
    img->x_chroma_shift = 1;
    img->y_chroma_shift = 1;
    img->planes[VPX_PLANE_Y] = yv12->y_buffer;
    img->planes[VPX_PLANE_U] = yv12->u_buffer;
    img->planes[VPX_PLANE_V] = yv12->v_buffer;
    img->planes[VPX_PLANE_ALPHA] = NULL;
    img->stride[VPX_PLANE_Y] = yv12->y_stride;
    img->stride[VPX_PLANE_U] = yv12->uv_stride;
    img->stride[VPX_PLANE_V] = yv12->uv_stride;
    img->stride[VPX_PLANE_ALPHA] = yv12->y_stride;
    img->bps = 12;
    img->user_priv = user_priv;
    img->img_data = yv12->buffer_alloc;
    img->img_data_owner = 0;
    img->self_allocd = 0;
}

static int
update_fragments(vpx_codec_alg_priv_t  *ctx,
                 const uint8_t         *data,
                 unsigned int           data_sz,
                 vpx_codec_err_t       *res)
{
    *res = VPX_CODEC_OK;

    if (ctx->fragments.count == 0)
    {
        /* New frame, reset fragment pointers and sizes */
        vpx_memset((void*)ctx->fragments.ptrs, 0, sizeof(ctx->fragments.ptrs));
        vpx_memset(ctx->fragments.sizes, 0, sizeof(ctx->fragments.sizes));
    }
    if (ctx->fragments.enabled && !(data == NULL && data_sz == 0))
    {
        /* Store a pointer to this fragment and return. We haven't
         * received the complete frame yet, so we will wait with decoding.
         */
        ctx->fragments.ptrs[ctx->fragments.count] = data;
        ctx->fragments.sizes[ctx->fragments.count] = data_sz;
        ctx->fragments.count++;
        if (ctx->fragments.count > (1 << EIGHT_PARTITION) + 1)
        {
            ctx->fragments.count = 0;
            *res = VPX_CODEC_INVALID_PARAM;
            return -1;
        }
        return 0;
    }

    if (!ctx->fragments.enabled)
    {
        ctx->fragments.ptrs[0] = data;
        ctx->fragments.sizes[0] = data_sz;
        ctx->fragments.count = 1;
    }

    return 1;
}

static vpx_codec_err_t vp8_decode(vpx_codec_alg_priv_t  *ctx,
                                  const uint8_t         *data,
                                  unsigned int            data_sz,
                                  void                    *user_priv,
                                  long                    deadline)
{
    vpx_codec_err_t res = VPX_CODEC_OK;
    unsigned int resolution_change = 0;
    unsigned int w, h;


    /* Update the input fragment data */
    if(update_fragments(ctx, data, data_sz, &res) <= 0)
        return res;

    /* Determine the stream parameters. Note that we rely on peek_si to
     * validate that we have a buffer that does not wrap around the top
     * of the heap.
     */
    w = ctx->si.w;
    h = ctx->si.h;

    res = vp8_peek_si_internal(ctx->fragments.ptrs[0], ctx->fragments.sizes[0],
                               &ctx->si, ctx->decrypt_cb, ctx->decrypt_state);

    if((res == VPX_CODEC_UNSUP_BITSTREAM) && !ctx->si.is_kf)
    {
        /* the peek function returns an error for non keyframes, however for
         * this case, it is not an error */
        res = VPX_CODEC_OK;
    }

    if(!ctx->decoder_init && !ctx->si.is_kf)
        res = VPX_CODEC_UNSUP_BITSTREAM;

    if ((ctx->si.h != h) || (ctx->si.w != w))
        resolution_change = 1;

    /* Perform deferred allocations, if required */
    if (!res && ctx->defer_alloc)
    {
        int i;

        for (i = 1; !res && i < NELEMENTS(ctx->mmaps); i++)
        {
            vpx_codec_dec_cfg_t cfg;

            cfg.w = ctx->si.w;
            cfg.h = ctx->si.h;
            ctx->mmaps[i].id = vp8_mem_req_segs[i].id;
            ctx->mmaps[i].sz = vp8_mem_req_segs[i].sz;
            ctx->mmaps[i].align = vp8_mem_req_segs[i].align;
            ctx->mmaps[i].flags = vp8_mem_req_segs[i].flags;

            if (!ctx->mmaps[i].sz)
                ctx->mmaps[i].sz = vp8_mem_req_segs[i].calc_sz(&cfg,
                                   ctx->base.init_flags);

            res = vpx_mmap_alloc(&ctx->mmaps[i]);
        }

        if (!res)
            vp8_finalize_mmaps(ctx);

        ctx->defer_alloc = 0;
    }

    /* Initialize the decoder instance on the first frame*/
    if (!res && !ctx->decoder_init)
    {
        res = vpx_validate_mmaps(&ctx->si, ctx->mmaps,
                                 vp8_mem_req_segs, NELEMENTS(vp8_mem_req_segs),
                                 ctx->base.init_flags);

        if (!res)
        {
            VP8D_CONFIG oxcf;

            oxcf.Width = ctx->si.w;
            oxcf.Height = ctx->si.h;
            oxcf.Version = 9;
            oxcf.postprocess = 0;
            oxcf.max_threads = ctx->cfg.threads;
            oxcf.error_concealment =
                    (ctx->base.init_flags & VPX_CODEC_USE_ERROR_CONCEALMENT);

            /* If postprocessing was enabled by the application and a
             * configuration has not been provided, default it.
             */
            if (!ctx->postproc_cfg_set
                && (ctx->base.init_flags & VPX_CODEC_USE_POSTPROC))
            {
                ctx->postproc_cfg.post_proc_flag =
                    VP8_DEBLOCK | VP8_DEMACROBLOCK | VP8_MFQE;
                ctx->postproc_cfg.deblocking_level = 4;
                ctx->postproc_cfg.noise_level = 0;
            }

            res = vp8_create_decoder_instances(&ctx->yv12_frame_buffers, &oxcf);
            ctx->yv12_frame_buffers.pbi[0]->decrypt_cb = ctx->decrypt_cb;
            ctx->yv12_frame_buffers.pbi[0]->decrypt_state = ctx->decrypt_state;
        }

        ctx->decoder_init = 1;
    }

    if (!res)
    {
        VP8D_COMP *pbi = ctx->yv12_frame_buffers.pbi[0];
        if(resolution_change)
        {
            VP8_COMMON *const pc = & pbi->common;
            MACROBLOCKD *const xd  = & pbi->mb;
#if CONFIG_MULTITHREAD
            int i;
#endif
            pc->Width = ctx->si.w;
            pc->Height = ctx->si.h;
            {
                int prev_mb_rows = pc->mb_rows;

                if (setjmp(pbi->common.error.jmp))
                {
                    pbi->common.error.setjmp = 0;
                    /* same return value as used in vp8dx_receive_compressed_data */
                    return -1;
                }

                pbi->common.error.setjmp = 1;

                if (pc->Width <= 0)
                {
                    pc->Width = w;
                    vpx_internal_error(&pc->error, VPX_CODEC_CORRUPT_FRAME,
                                       "Invalid frame width");
                }

                if (pc->Height <= 0)
                {
                    pc->Height = h;
                    vpx_internal_error(&pc->error, VPX_CODEC_CORRUPT_FRAME,
                                       "Invalid frame height");
                }

                if (vp8_alloc_frame_buffers(pc, pc->Width, pc->Height))
                    vpx_internal_error(&pc->error, VPX_CODEC_MEM_ERROR,
                                       "Failed to allocate frame buffers");

                xd->pre = pc->yv12_fb[pc->lst_fb_idx];
                xd->dst = pc->yv12_fb[pc->new_fb_idx];

#if CONFIG_MULTITHREAD
                for (i = 0; i < pbi->allocated_decoding_thread_count; i++)
                {
                    pbi->mb_row_di[i].mbd.dst = pc->yv12_fb[pc->new_fb_idx];
                    vp8_build_block_doffsets(&pbi->mb_row_di[i].mbd);
                }
#endif
                vp8_build_block_doffsets(&pbi->mb);

                /* allocate memory for last frame MODE_INFO array */
#if CONFIG_ERROR_CONCEALMENT

                if (pbi->ec_enabled)
                {
                    /* old prev_mip was released by vp8_de_alloc_frame_buffers()
                     * called in vp8_alloc_frame_buffers() */
                    pc->prev_mip = vpx_calloc(
                                       (pc->mb_cols + 1) * (pc->mb_rows + 1),
                                       sizeof(MODE_INFO));

                    if (!pc->prev_mip)
                    {
                        vp8_de_alloc_frame_buffers(pc);
                        vpx_internal_error(&pc->error, VPX_CODEC_MEM_ERROR,
                                           "Failed to allocate"
                                           "last frame MODE_INFO array");
                    }

                    pc->prev_mi = pc->prev_mip + pc->mode_info_stride + 1;

                    if (vp8_alloc_overlap_lists(pbi))
                        vpx_internal_error(&pc->error, VPX_CODEC_MEM_ERROR,
                                           "Failed to allocate overlap lists "
                                           "for error concealment");
                }

#endif

#if CONFIG_MULTITHREAD
                if (pbi->b_multithreaded_rd)
                    vp8mt_alloc_temp_buffers(pbi, pc->Width, prev_mb_rows);
#else
                (void)prev_mb_rows;
#endif
            }

            pbi->common.error.setjmp = 0;

            /* required to get past the first get_free_fb() call */
            pbi->common.fb_idx_ref_cnt[0] = 0;
        }

        /* update the pbi fragment data */
        pbi->fragments = ctx->fragments;

        ctx->user_priv = user_priv;
        if (vp8dx_receive_compressed_data(pbi, data_sz, data, deadline))
        {
            res = update_error_state(ctx, &pbi->common.error);
        }

        /* get ready for the next series of fragments */
        ctx->fragments.count = 0;
    }

    return res;
}

static vpx_image_t *vp8_get_frame(vpx_codec_alg_priv_t  *ctx,
                                  vpx_codec_iter_t      *iter)
{
    vpx_image_t *img = NULL;

    /* iter acts as a flip flop, so an image is only returned on the first
     * call to get_frame.
     */
    if (!(*iter) && ctx->yv12_frame_buffers.pbi[0])
    {
        YV12_BUFFER_CONFIG sd;
        int64_t time_stamp = 0, time_end_stamp = 0;
        vp8_ppflags_t flags = {0};

        if (ctx->base.init_flags & VPX_CODEC_USE_POSTPROC)
        {
            flags.post_proc_flag= ctx->postproc_cfg.post_proc_flag
#if CONFIG_POSTPROC_VISUALIZER

                                | ((ctx->dbg_color_ref_frame_flag != 0) ? VP8D_DEBUG_CLR_FRM_REF_BLKS : 0)
                                | ((ctx->dbg_color_mb_modes_flag != 0) ? VP8D_DEBUG_CLR_BLK_MODES : 0)
                                | ((ctx->dbg_color_b_modes_flag != 0) ? VP8D_DEBUG_CLR_BLK_MODES : 0)
                                | ((ctx->dbg_display_mv_flag != 0) ? VP8D_DEBUG_DRAW_MV : 0)
#endif
                                ;
            flags.deblocking_level      = ctx->postproc_cfg.deblocking_level;
            flags.noise_level           = ctx->postproc_cfg.noise_level;
#if CONFIG_POSTPROC_VISUALIZER
            flags.display_ref_frame_flag= ctx->dbg_color_ref_frame_flag;
            flags.display_mb_modes_flag = ctx->dbg_color_mb_modes_flag;
            flags.display_b_modes_flag  = ctx->dbg_color_b_modes_flag;
            flags.display_mv_flag       = ctx->dbg_display_mv_flag;
#endif
        }

        if (0 == vp8dx_get_raw_frame(ctx->yv12_frame_buffers.pbi[0], &sd,
                                     &time_stamp, &time_end_stamp, &flags))
        {
            yuvconfig2image(&ctx->img, &sd, ctx->user_priv);

            img = &ctx->img;
            *iter = img;
        }
    }

    return img;
}


static
vpx_codec_err_t vp8_xma_get_mmap(const vpx_codec_ctx_t      *ctx,
                                 vpx_codec_mmap_t           *mmap,
                                 vpx_codec_iter_t           *iter)
{
    vpx_codec_err_t     res;
    const mem_req_t  *seg_iter = *iter;

    /* Get address of next segment request */
    do
    {
        if (!seg_iter)
            seg_iter = vp8_mem_req_segs;
        else if (seg_iter->id != VP8_SEG_MAX)
            seg_iter++;

        *iter = (vpx_codec_iter_t)seg_iter;

        if (seg_iter->id != VP8_SEG_MAX)
        {
            mmap->id = seg_iter->id;
            mmap->sz = seg_iter->sz;
            mmap->align = seg_iter->align;
            mmap->flags = seg_iter->flags;

            if (!seg_iter->sz)
                mmap->sz = seg_iter->calc_sz(ctx->config.dec, ctx->init_flags);

            res = VPX_CODEC_OK;
        }
        else
            res = VPX_CODEC_LIST_END;
    }
    while (!mmap->sz && res != VPX_CODEC_LIST_END);

    return res;
}

static vpx_codec_err_t vp8_xma_set_mmap(vpx_codec_ctx_t         *ctx,
                                        const vpx_codec_mmap_t  *mmap)
{
    vpx_codec_err_t res = VPX_CODEC_MEM_ERROR;
    int i, done;

    if (!ctx->priv)
    {
        if (mmap->id == VP8_SEG_ALG_PRIV)
        {
            if (!ctx->priv)
            {
                vp8_init_ctx(ctx, mmap);
                res = VPX_CODEC_OK;
            }
        }
    }

    done = 1;

    if (!res && ctx->priv->alg_priv)
    {
        for (i = 0; i < NELEMENTS(ctx->priv->alg_priv->mmaps); i++)
        {
            if (ctx->priv->alg_priv->mmaps[i].id == mmap->id)
                if (!ctx->priv->alg_priv->mmaps[i].base)
                {
                    ctx->priv->alg_priv->mmaps[i] = *mmap;
                    res = VPX_CODEC_OK;
                }

            done &= (ctx->priv->alg_priv->mmaps[i].base != NULL);
        }
    }

    if (done && !res)
    {
        vp8_finalize_mmaps(ctx->priv->alg_priv);
        res = ctx->iface->init(ctx, NULL);
    }

    return res;
}

static vpx_codec_err_t image2yuvconfig(const vpx_image_t   *img,
                                       YV12_BUFFER_CONFIG  *yv12)
{
    vpx_codec_err_t        res = VPX_CODEC_OK;
    yv12->y_buffer = img->planes[VPX_PLANE_Y];
    yv12->u_buffer = img->planes[VPX_PLANE_U];
    yv12->v_buffer = img->planes[VPX_PLANE_V];

    yv12->y_crop_width  = img->d_w;
    yv12->y_crop_height = img->d_h;
    yv12->y_width  = img->d_w;
    yv12->y_height = img->d_h;
    yv12->uv_width = yv12->y_width / 2;
    yv12->uv_height = yv12->y_height / 2;

    yv12->y_stride = img->stride[VPX_PLANE_Y];
    yv12->uv_stride = img->stride[VPX_PLANE_U];

    yv12->border  = (img->stride[VPX_PLANE_Y] - img->d_w) / 2;
    return res;
}


static vpx_codec_err_t vp8_set_reference(vpx_codec_alg_priv_t *ctx,
        int ctr_id,
        va_list args)
{

    vpx_ref_frame_t *data = va_arg(args, vpx_ref_frame_t *);

    if (data && !ctx->yv12_frame_buffers.use_frame_threads)
    {
        vpx_ref_frame_t *frame = (vpx_ref_frame_t *)data;
        YV12_BUFFER_CONFIG sd;

        image2yuvconfig(&frame->img, &sd);

        return vp8dx_set_reference(ctx->yv12_frame_buffers.pbi[0],
                                   frame->frame_type, &sd);
    }
    else
        return VPX_CODEC_INVALID_PARAM;

}

static vpx_codec_err_t vp8_get_reference(vpx_codec_alg_priv_t *ctx,
        int ctr_id,
        va_list args)
{

    vpx_ref_frame_t *data = va_arg(args, vpx_ref_frame_t *);

    if (data && !ctx->yv12_frame_buffers.use_frame_threads)
    {
        vpx_ref_frame_t *frame = (vpx_ref_frame_t *)data;
        YV12_BUFFER_CONFIG sd;

        image2yuvconfig(&frame->img, &sd);

        return vp8dx_get_reference(ctx->yv12_frame_buffers.pbi[0],
                                   frame->frame_type, &sd);
    }
    else
        return VPX_CODEC_INVALID_PARAM;

}

static vpx_codec_err_t vp8_set_postproc(vpx_codec_alg_priv_t *ctx,
                                        int ctr_id,
                                        va_list args)
{
#if CONFIG_POSTPROC
    vp8_postproc_cfg_t *data = va_arg(args, vp8_postproc_cfg_t *);

    if (data)
    {
        ctx->postproc_cfg_set = 1;
        ctx->postproc_cfg = *((vp8_postproc_cfg_t *)data);
        return VPX_CODEC_OK;
    }
    else
        return VPX_CODEC_INVALID_PARAM;

#else
    return VPX_CODEC_INCAPABLE;
#endif
}

static vpx_codec_err_t vp8_set_dbg_options(vpx_codec_alg_priv_t *ctx,
                                        int ctrl_id,
                                        va_list args)
{
#if CONFIG_POSTPROC_VISUALIZER && CONFIG_POSTPROC
    int data = va_arg(args, int);

#define MAP(id, var) case id: var = data; break;

    switch (ctrl_id)
    {
        MAP (VP8_SET_DBG_COLOR_REF_FRAME,   ctx->dbg_color_ref_frame_flag);
        MAP (VP8_SET_DBG_COLOR_MB_MODES,    ctx->dbg_color_mb_modes_flag);
        MAP (VP8_SET_DBG_COLOR_B_MODES,     ctx->dbg_color_b_modes_flag);
        MAP (VP8_SET_DBG_DISPLAY_MV,        ctx->dbg_display_mv_flag);
    }

    return VPX_CODEC_OK;
#else
    return VPX_CODEC_INCAPABLE;
#endif
}

static vpx_codec_err_t vp8_get_last_ref_updates(vpx_codec_alg_priv_t *ctx,
                                                int ctrl_id,
                                                va_list args)
{
    int *update_info = va_arg(args, int *);

    if (update_info && !ctx->yv12_frame_buffers.use_frame_threads)
    {
        VP8D_COMP *pbi = (VP8D_COMP *)ctx->yv12_frame_buffers.pbi[0];

        *update_info = pbi->common.refresh_alt_ref_frame * (int) VP8_ALTR_FRAME
            + pbi->common.refresh_golden_frame * (int) VP8_GOLD_FRAME
            + pbi->common.refresh_last_frame * (int) VP8_LAST_FRAME;

        return VPX_CODEC_OK;
    }
    else
        return VPX_CODEC_INVALID_PARAM;
}

extern int vp8dx_references_buffer( VP8_COMMON *oci, int ref_frame );
static vpx_codec_err_t vp8_get_last_ref_frame(vpx_codec_alg_priv_t *ctx,
                                              int ctrl_id,
                                              va_list args)
{
    int *ref_info = va_arg(args, int *);

    if (ref_info && !ctx->yv12_frame_buffers.use_frame_threads)
    {
        VP8D_COMP *pbi = (VP8D_COMP *)ctx->yv12_frame_buffers.pbi[0];
        VP8_COMMON *oci = &pbi->common;
        *ref_info =
            (vp8dx_references_buffer( oci, ALTREF_FRAME )?VP8_ALTR_FRAME:0) |
            (vp8dx_references_buffer( oci, GOLDEN_FRAME )?VP8_GOLD_FRAME:0) |
            (vp8dx_references_buffer( oci, LAST_FRAME )?VP8_LAST_FRAME:0);

        return VPX_CODEC_OK;
    }
    else
        return VPX_CODEC_INVALID_PARAM;
}

static vpx_codec_err_t vp8_get_frame_corrupted(vpx_codec_alg_priv_t *ctx,
                                               int ctrl_id,
                                               va_list args)
{

    int *corrupted = va_arg(args, int *);
    VP8D_COMP *pbi = (VP8D_COMP *)ctx->yv12_frame_buffers.pbi[0];

    if (corrupted && pbi)
    {
        *corrupted = pbi->common.frame_to_show->corrupted;

        return VPX_CODEC_OK;
    }
    else
        return VPX_CODEC_INVALID_PARAM;

}

static vpx_codec_err_t vp8_set_decryptor(vpx_codec_alg_priv_t *ctx,
                                         int ctrl_id,
                                         va_list args)
{
    vp8_decrypt_init *init = va_arg(args, vp8_decrypt_init *);

    if (init)
    {
        ctx->decrypt_cb = init->decrypt_cb;
        ctx->decrypt_state = init->decrypt_state;
    }
    else
    {
        ctx->decrypt_cb = NULL;
        ctx->decrypt_state = NULL;
    }
    return VPX_CODEC_OK;
}

vpx_codec_ctrl_fn_map_t vp8_ctf_maps[] =
{
    {VP8_SET_REFERENCE,             vp8_set_reference},
    {VP8_COPY_REFERENCE,            vp8_get_reference},
    {VP8_SET_POSTPROC,              vp8_set_postproc},
    {VP8_SET_DBG_COLOR_REF_FRAME,   vp8_set_dbg_options},
    {VP8_SET_DBG_COLOR_MB_MODES,    vp8_set_dbg_options},
    {VP8_SET_DBG_COLOR_B_MODES,     vp8_set_dbg_options},
    {VP8_SET_DBG_DISPLAY_MV,        vp8_set_dbg_options},
    {VP8D_GET_LAST_REF_UPDATES,     vp8_get_last_ref_updates},
    {VP8D_GET_FRAME_CORRUPTED,      vp8_get_frame_corrupted},
    {VP8D_GET_LAST_REF_USED,        vp8_get_last_ref_frame},
    {VP8D_SET_DECRYPTOR,            vp8_set_decryptor},
    { -1, NULL},
};


#ifndef VERSION_STRING
#define VERSION_STRING
#endif
CODEC_INTERFACE(vpx_codec_vp8_dx) =
{
    "WebM Project VP8 Decoder" VERSION_STRING,
    VPX_CODEC_INTERNAL_ABI_VERSION,
    VPX_CODEC_CAP_DECODER | VP8_CAP_POSTPROC | VP8_CAP_ERROR_CONCEALMENT |
    VPX_CODEC_CAP_INPUT_FRAGMENTS,
    /* vpx_codec_caps_t          caps; */
    vp8_init,         /* vpx_codec_init_fn_t       init; */
    vp8_destroy,      /* vpx_codec_destroy_fn_t    destroy; */
    vp8_ctf_maps,     /* vpx_codec_ctrl_fn_map_t  *ctrl_maps; */
    vp8_xma_get_mmap, /* vpx_codec_get_mmap_fn_t   get_mmap; */
    vp8_xma_set_mmap, /* vpx_codec_set_mmap_fn_t   set_mmap; */
    {
        vp8_peek_si,      /* vpx_codec_peek_si_fn_t    peek_si; */
        vp8_get_si,       /* vpx_codec_get_si_fn_t     get_si; */
        vp8_decode,       /* vpx_codec_decode_fn_t     decode; */
        vp8_get_frame,    /* vpx_codec_frame_get_fn_t  frame_get; */
    },
    { /* encoder functions */
        NOT_IMPLEMENTED,
        NOT_IMPLEMENTED,
        NOT_IMPLEMENTED,
        NOT_IMPLEMENTED,
        NOT_IMPLEMENTED,
        NOT_IMPLEMENTED
    }
};