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      1 /*
      2  *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
      3  *
      4  *  Use of this source code is governed by a BSD-style license
      5  *  that can be found in the LICENSE file in the root of the source
      6  *  tree. An additional intellectual property rights grant can be found
      7  *  in the file PATENTS.  All contributing project authors may
      8  *  be found in the AUTHORS file in the root of the source tree.
      9  */
     10 
     11 
     12 #include <stdlib.h>
     13 #include <string.h>
     14 #include "vpx/vpx_decoder.h"
     15 #include "vpx/vp8dx.h"
     16 #include "vpx/internal/vpx_codec_internal.h"
     17 #include "vpx_version.h"
     18 #include "common/onyxd.h"
     19 #include "decoder/onyxd_int.h"
     20 
     21 #define VP8_CAP_POSTPROC (CONFIG_POSTPROC ? VPX_CODEC_CAP_POSTPROC : 0)
     22 
     23 typedef vpx_codec_stream_info_t  vp8_stream_info_t;
     24 
     25 /* Structures for handling memory allocations */
     26 typedef enum
     27 {
     28     VP8_SEG_ALG_PRIV     = 256,
     29     VP8_SEG_MAX
     30 } mem_seg_id_t;
     31 #define NELEMENTS(x) ((int)(sizeof(x)/sizeof(x[0])))
     32 
     33 static unsigned long vp8_priv_sz(const vpx_codec_dec_cfg_t *si, vpx_codec_flags_t);
     34 
     35 typedef struct
     36 {
     37     unsigned int   id;
     38     unsigned long  sz;
     39     unsigned int   align;
     40     unsigned int   flags;
     41     unsigned long(*calc_sz)(const vpx_codec_dec_cfg_t *, vpx_codec_flags_t);
     42 } mem_req_t;
     43 
     44 static const mem_req_t vp8_mem_req_segs[] =
     45 {
     46     {VP8_SEG_ALG_PRIV,    0, 8, VPX_CODEC_MEM_ZERO, vp8_priv_sz},
     47     {VP8_SEG_MAX, 0, 0, 0, NULL}
     48 };
     49 
     50 struct vpx_codec_alg_priv
     51 {
     52     vpx_codec_priv_t        base;
     53     vpx_codec_mmap_t        mmaps[NELEMENTS(vp8_mem_req_segs)-1];
     54     vpx_codec_dec_cfg_t     cfg;
     55     vp8_stream_info_t       si;
     56     int                     defer_alloc;
     57     int                     decoder_init;
     58     VP8D_PTR                pbi;
     59     int                     postproc_cfg_set;
     60     vp8_postproc_cfg_t      postproc_cfg;
     61 #if CONFIG_POSTPROC_VISUALIZER
     62     unsigned int            dbg_postproc_flag;
     63     int                     dbg_color_ref_frame_flag;
     64     int                     dbg_color_mb_modes_flag;
     65     int                     dbg_color_b_modes_flag;
     66     int                     dbg_display_mv_flag;
     67 #endif
     68     vpx_image_t             img;
     69     int                     img_setup;
     70     int                     img_avail;
     71 };
     72 
     73 static unsigned long vp8_priv_sz(const vpx_codec_dec_cfg_t *si, vpx_codec_flags_t flags)
     74 {
     75     /* Although this declaration is constant, we can't use it in the requested
     76      * segments list because we want to define the requested segments list
     77      * before defining the private type (so that the number of memory maps is
     78      * known)
     79      */
     80     (void)si;
     81     return sizeof(vpx_codec_alg_priv_t);
     82 }
     83 
     84 
     85 static void vp8_mmap_dtor(vpx_codec_mmap_t *mmap)
     86 {
     87     free(mmap->priv);
     88 }
     89 
     90 static vpx_codec_err_t vp8_mmap_alloc(vpx_codec_mmap_t *mmap)
     91 {
     92     vpx_codec_err_t  res;
     93     unsigned int   align;
     94 
     95     align = mmap->align ? mmap->align - 1 : 0;
     96 
     97     if (mmap->flags & VPX_CODEC_MEM_ZERO)
     98         mmap->priv = calloc(1, mmap->sz + align);
     99     else
    100         mmap->priv = malloc(mmap->sz + align);
    101 
    102     res = (mmap->priv) ? VPX_CODEC_OK : VPX_CODEC_MEM_ERROR;
    103     mmap->base = (void *)((((uintptr_t)mmap->priv) + align) & ~(uintptr_t)align);
    104     mmap->dtor = vp8_mmap_dtor;
    105     return res;
    106 }
    107 
    108 static vpx_codec_err_t vp8_validate_mmaps(const vp8_stream_info_t *si,
    109         const vpx_codec_mmap_t        *mmaps,
    110         vpx_codec_flags_t              init_flags)
    111 {
    112     int i;
    113     vpx_codec_err_t res = VPX_CODEC_OK;
    114 
    115     for (i = 0; i < NELEMENTS(vp8_mem_req_segs) - 1; i++)
    116     {
    117         /* Ensure the segment has been allocated */
    118         if (!mmaps[i].base)
    119         {
    120             res = VPX_CODEC_MEM_ERROR;
    121             break;
    122         }
    123 
    124         /* Verify variable size segment is big enough for the current si. */
    125         if (vp8_mem_req_segs[i].calc_sz)
    126         {
    127             vpx_codec_dec_cfg_t cfg;
    128 
    129             cfg.w = si->w;
    130             cfg.h = si->h;
    131 
    132             if (mmaps[i].sz < vp8_mem_req_segs[i].calc_sz(&cfg, init_flags))
    133             {
    134                 res = VPX_CODEC_MEM_ERROR;
    135                 break;
    136             }
    137         }
    138     }
    139 
    140     return res;
    141 }
    142 
    143 static void vp8_init_ctx(vpx_codec_ctx_t *ctx, const vpx_codec_mmap_t *mmap)
    144 {
    145     int i;
    146 
    147     ctx->priv = mmap->base;
    148     ctx->priv->sz = sizeof(*ctx->priv);
    149     ctx->priv->iface = ctx->iface;
    150     ctx->priv->alg_priv = mmap->base;
    151 
    152     for (i = 0; i < NELEMENTS(ctx->priv->alg_priv->mmaps); i++)
    153         ctx->priv->alg_priv->mmaps[i].id = vp8_mem_req_segs[i].id;
    154 
    155     ctx->priv->alg_priv->mmaps[0] = *mmap;
    156     ctx->priv->alg_priv->si.sz = sizeof(ctx->priv->alg_priv->si);
    157     ctx->priv->init_flags = ctx->init_flags;
    158 
    159     if (ctx->config.dec)
    160     {
    161         /* Update the reference to the config structure to an internal copy. */
    162         ctx->priv->alg_priv->cfg = *ctx->config.dec;
    163         ctx->config.dec = &ctx->priv->alg_priv->cfg;
    164     }
    165 }
    166 
    167 static void *mmap_lkup(vpx_codec_alg_priv_t *ctx, unsigned int id)
    168 {
    169     int i;
    170 
    171     for (i = 0; i < NELEMENTS(ctx->mmaps); i++)
    172         if (ctx->mmaps[i].id == id)
    173             return ctx->mmaps[i].base;
    174 
    175     return NULL;
    176 }
    177 static void vp8_finalize_mmaps(vpx_codec_alg_priv_t *ctx)
    178 {
    179     /* nothing to clean up */
    180 }
    181 
    182 static vpx_codec_err_t vp8_init(vpx_codec_ctx_t *ctx)
    183 {
    184     vpx_codec_err_t        res = VPX_CODEC_OK;
    185 
    186     /* This function only allocates space for the vpx_codec_alg_priv_t
    187      * structure. More memory may be required at the time the stream
    188      * information becomes known.
    189      */
    190     if (!ctx->priv)
    191     {
    192         vpx_codec_mmap_t mmap;
    193 
    194         mmap.id = vp8_mem_req_segs[0].id;
    195         mmap.sz = sizeof(vpx_codec_alg_priv_t);
    196         mmap.align = vp8_mem_req_segs[0].align;
    197         mmap.flags = vp8_mem_req_segs[0].flags;
    198 
    199         res = vp8_mmap_alloc(&mmap);
    200 
    201         if (!res)
    202         {
    203             vp8_init_ctx(ctx, &mmap);
    204 
    205             ctx->priv->alg_priv->defer_alloc = 1;
    206             /*post processing level initialized to do nothing */
    207         }
    208     }
    209 
    210     return res;
    211 }
    212 
    213 static vpx_codec_err_t vp8_destroy(vpx_codec_alg_priv_t *ctx)
    214 {
    215     int i;
    216 
    217     vp8dx_remove_decompressor(ctx->pbi);
    218 
    219     for (i = NELEMENTS(ctx->mmaps) - 1; i >= 0; i--)
    220     {
    221         if (ctx->mmaps[i].dtor)
    222             ctx->mmaps[i].dtor(&ctx->mmaps[i]);
    223     }
    224 
    225     return VPX_CODEC_OK;
    226 }
    227 
    228 static vpx_codec_err_t vp8_peek_si(const uint8_t         *data,
    229                                    unsigned int           data_sz,
    230                                    vpx_codec_stream_info_t *si)
    231 {
    232     vpx_codec_err_t res = VPX_CODEC_OK;
    233 
    234     if(data + data_sz <= data)
    235         res = VPX_CODEC_INVALID_PARAM;
    236     else
    237     {
    238         /* Parse uncompresssed part of key frame header.
    239          * 3 bytes:- including version, frame type and an offset
    240          * 3 bytes:- sync code (0x9d, 0x01, 0x2a)
    241          * 4 bytes:- including image width and height in the lowest 14 bits
    242          *           of each 2-byte value.
    243          */
    244         si->is_kf = 0;
    245 
    246         if (data_sz >= 10 && !(data[0] & 0x01))  /* I-Frame */
    247         {
    248             const uint8_t *c = data + 3;
    249             si->is_kf = 1;
    250 
    251             /* vet via sync code */
    252             if (c[0] != 0x9d || c[1] != 0x01 || c[2] != 0x2a)
    253                 res = VPX_CODEC_UNSUP_BITSTREAM;
    254 
    255             si->w = (c[3] | (c[4] << 8)) & 0x3fff;
    256             si->h = (c[5] | (c[6] << 8)) & 0x3fff;
    257 
    258             /*printf("w=%d, h=%d\n", si->w, si->h);*/
    259             if (!(si->h | si->w))
    260                 res = VPX_CODEC_UNSUP_BITSTREAM;
    261         }
    262         else
    263             res = VPX_CODEC_UNSUP_BITSTREAM;
    264     }
    265 
    266     return res;
    267 
    268 }
    269 
    270 static vpx_codec_err_t vp8_get_si(vpx_codec_alg_priv_t    *ctx,
    271                                   vpx_codec_stream_info_t *si)
    272 {
    273 
    274     unsigned int sz;
    275 
    276     if (si->sz >= sizeof(vp8_stream_info_t))
    277         sz = sizeof(vp8_stream_info_t);
    278     else
    279         sz = sizeof(vpx_codec_stream_info_t);
    280 
    281     memcpy(si, &ctx->si, sz);
    282     si->sz = sz;
    283 
    284     return VPX_CODEC_OK;
    285 }
    286 
    287 
    288 static vpx_codec_err_t
    289 update_error_state(vpx_codec_alg_priv_t                 *ctx,
    290                    const struct vpx_internal_error_info *error)
    291 {
    292     vpx_codec_err_t res;
    293 
    294     if ((res = error->error_code))
    295         ctx->base.err_detail = error->has_detail
    296                                ? error->detail
    297                                : NULL;
    298 
    299     return res;
    300 }
    301 
    302 
    303 static vpx_codec_err_t vp8_decode(vpx_codec_alg_priv_t  *ctx,
    304                                   const uint8_t         *data,
    305                                   unsigned int            data_sz,
    306                                   void                    *user_priv,
    307                                   long                    deadline)
    308 {
    309     vpx_codec_err_t res = VPX_CODEC_OK;
    310 
    311     ctx->img_avail = 0;
    312 
    313     /* Determine the stream parameters. Note that we rely on peek_si to
    314      * validate that we have a buffer that does not wrap around the top
    315      * of the heap.
    316      */
    317     if (!ctx->si.h)
    318         res = ctx->base.iface->dec.peek_si(data, data_sz, &ctx->si);
    319 
    320 
    321     /* Perform deferred allocations, if required */
    322     if (!res && ctx->defer_alloc)
    323     {
    324         int i;
    325 
    326         for (i = 1; !res && i < NELEMENTS(ctx->mmaps); i++)
    327         {
    328             vpx_codec_dec_cfg_t cfg;
    329 
    330             cfg.w = ctx->si.w;
    331             cfg.h = ctx->si.h;
    332             ctx->mmaps[i].id = vp8_mem_req_segs[i].id;
    333             ctx->mmaps[i].sz = vp8_mem_req_segs[i].sz;
    334             ctx->mmaps[i].align = vp8_mem_req_segs[i].align;
    335             ctx->mmaps[i].flags = vp8_mem_req_segs[i].flags;
    336 
    337             if (!ctx->mmaps[i].sz)
    338                 ctx->mmaps[i].sz = vp8_mem_req_segs[i].calc_sz(&cfg,
    339                                    ctx->base.init_flags);
    340 
    341             res = vp8_mmap_alloc(&ctx->mmaps[i]);
    342         }
    343 
    344         if (!res)
    345             vp8_finalize_mmaps(ctx);
    346 
    347         ctx->defer_alloc = 0;
    348     }
    349 
    350     /* Initialize the decoder instance on the first frame*/
    351     if (!res && !ctx->decoder_init)
    352     {
    353         res = vp8_validate_mmaps(&ctx->si, ctx->mmaps, ctx->base.init_flags);
    354 
    355         if (!res)
    356         {
    357             VP8D_CONFIG oxcf;
    358             VP8D_PTR optr;
    359 
    360             vp8dx_initialize();
    361 
    362             oxcf.Width = ctx->si.w;
    363             oxcf.Height = ctx->si.h;
    364             oxcf.Version = 9;
    365             oxcf.postprocess = 0;
    366             oxcf.max_threads = ctx->cfg.threads;
    367 
    368             optr = vp8dx_create_decompressor(&oxcf);
    369 
    370             /* If postprocessing was enabled by the application and a
    371              * configuration has not been provided, default it.
    372              */
    373             if (!ctx->postproc_cfg_set
    374                 && (ctx->base.init_flags & VPX_CODEC_USE_POSTPROC))
    375             {
    376                 ctx->postproc_cfg.post_proc_flag =
    377                     VP8_DEBLOCK | VP8_DEMACROBLOCK;
    378                 ctx->postproc_cfg.deblocking_level = 4;
    379                 ctx->postproc_cfg.noise_level = 0;
    380             }
    381 
    382             if (!optr)
    383                 res = VPX_CODEC_ERROR;
    384             else
    385                 ctx->pbi = optr;
    386         }
    387 
    388         ctx->decoder_init = 1;
    389     }
    390 
    391     if (!res && ctx->pbi)
    392     {
    393         YV12_BUFFER_CONFIG sd;
    394         INT64 time_stamp = 0, time_end_stamp = 0;
    395         vp8_ppflags_t flags = {0};
    396 
    397         if (ctx->base.init_flags & VPX_CODEC_USE_POSTPROC)
    398         {
    399             flags.post_proc_flag= ctx->postproc_cfg.post_proc_flag
    400 #if CONFIG_POSTPROC_VISUALIZER
    401 
    402                                 | ((ctx->dbg_color_ref_frame_flag != 0) ? VP8D_DEBUG_CLR_FRM_REF_BLKS : 0)
    403                                 | ((ctx->dbg_color_mb_modes_flag != 0) ? VP8D_DEBUG_CLR_BLK_MODES : 0)
    404                                 | ((ctx->dbg_color_b_modes_flag != 0) ? VP8D_DEBUG_CLR_BLK_MODES : 0)
    405                                 | ((ctx->dbg_display_mv_flag != 0) ? VP8D_DEBUG_DRAW_MV : 0)
    406 #endif
    407                                 ;
    408             flags.deblocking_level      = ctx->postproc_cfg.deblocking_level;
    409             flags.noise_level           = ctx->postproc_cfg.noise_level;
    410 #if CONFIG_POSTPROC_VISUALIZER
    411             flags.display_ref_frame_flag= ctx->dbg_color_ref_frame_flag;
    412             flags.display_mb_modes_flag = ctx->dbg_color_mb_modes_flag;
    413             flags.display_b_modes_flag  = ctx->dbg_color_b_modes_flag;
    414             flags.display_mv_flag       = ctx->dbg_display_mv_flag;
    415 #endif
    416         }
    417 
    418         if (vp8dx_receive_compressed_data(ctx->pbi, data_sz, data, deadline))
    419         {
    420             VP8D_COMP *pbi = (VP8D_COMP *)ctx->pbi;
    421             res = update_error_state(ctx, &pbi->common.error);
    422         }
    423 
    424         if (!res && 0 == vp8dx_get_raw_frame(ctx->pbi, &sd, &time_stamp, &time_end_stamp, &flags))
    425         {
    426             /* Align width/height */
    427             unsigned int a_w = (sd.y_width + 15) & ~15;
    428             unsigned int a_h = (sd.y_height + 15) & ~15;
    429 
    430             vpx_img_wrap(&ctx->img, VPX_IMG_FMT_I420,
    431                          a_w + 2 * VP8BORDERINPIXELS,
    432                          a_h + 2 * VP8BORDERINPIXELS,
    433                          1,
    434                          sd.buffer_alloc);
    435             vpx_img_set_rect(&ctx->img,
    436                              VP8BORDERINPIXELS, VP8BORDERINPIXELS,
    437                              sd.y_width, sd.y_height);
    438             ctx->img.user_priv = user_priv;
    439             ctx->img_avail = 1;
    440 
    441         }
    442     }
    443 
    444     return res;
    445 }
    446 
    447 static vpx_image_t *vp8_get_frame(vpx_codec_alg_priv_t  *ctx,
    448                                   vpx_codec_iter_t      *iter)
    449 {
    450     vpx_image_t *img = NULL;
    451 
    452     if (ctx->img_avail)
    453     {
    454         /* iter acts as a flip flop, so an image is only returned on the first
    455          * call to get_frame.
    456          */
    457         if (!(*iter))
    458         {
    459             img = &ctx->img;
    460             *iter = img;
    461         }
    462     }
    463 
    464     return img;
    465 }
    466 
    467 
    468 static
    469 vpx_codec_err_t vp8_xma_get_mmap(const vpx_codec_ctx_t      *ctx,
    470                                  vpx_codec_mmap_t           *mmap,
    471                                  vpx_codec_iter_t           *iter)
    472 {
    473     vpx_codec_err_t     res;
    474     const mem_req_t  *seg_iter = *iter;
    475 
    476     /* Get address of next segment request */
    477     do
    478     {
    479         if (!seg_iter)
    480             seg_iter = vp8_mem_req_segs;
    481         else if (seg_iter->id != VP8_SEG_MAX)
    482             seg_iter++;
    483 
    484         *iter = (vpx_codec_iter_t)seg_iter;
    485 
    486         if (seg_iter->id != VP8_SEG_MAX)
    487         {
    488             mmap->id = seg_iter->id;
    489             mmap->sz = seg_iter->sz;
    490             mmap->align = seg_iter->align;
    491             mmap->flags = seg_iter->flags;
    492 
    493             if (!seg_iter->sz)
    494                 mmap->sz = seg_iter->calc_sz(ctx->config.dec, ctx->init_flags);
    495 
    496             res = VPX_CODEC_OK;
    497         }
    498         else
    499             res = VPX_CODEC_LIST_END;
    500     }
    501     while (!mmap->sz && res != VPX_CODEC_LIST_END);
    502 
    503     return res;
    504 }
    505 
    506 static vpx_codec_err_t vp8_xma_set_mmap(vpx_codec_ctx_t         *ctx,
    507                                         const vpx_codec_mmap_t  *mmap)
    508 {
    509     vpx_codec_err_t res = VPX_CODEC_MEM_ERROR;
    510     int i, done;
    511 
    512     if (!ctx->priv)
    513     {
    514         if (mmap->id == VP8_SEG_ALG_PRIV)
    515         {
    516             if (!ctx->priv)
    517             {
    518                 vp8_init_ctx(ctx, mmap);
    519                 res = VPX_CODEC_OK;
    520             }
    521         }
    522     }
    523 
    524     done = 1;
    525 
    526     if (!res && ctx->priv->alg_priv)
    527     {
    528         for (i = 0; i < NELEMENTS(ctx->priv->alg_priv->mmaps); i++)
    529         {
    530             if (ctx->priv->alg_priv->mmaps[i].id == mmap->id)
    531                 if (!ctx->priv->alg_priv->mmaps[i].base)
    532                 {
    533                     ctx->priv->alg_priv->mmaps[i] = *mmap;
    534                     res = VPX_CODEC_OK;
    535                 }
    536 
    537             done &= (ctx->priv->alg_priv->mmaps[i].base != NULL);
    538         }
    539     }
    540 
    541     if (done && !res)
    542     {
    543         vp8_finalize_mmaps(ctx->priv->alg_priv);
    544         res = ctx->iface->init(ctx);
    545     }
    546 
    547     return res;
    548 }
    549 
    550 static vpx_codec_err_t image2yuvconfig(const vpx_image_t   *img,
    551                                        YV12_BUFFER_CONFIG  *yv12)
    552 {
    553     vpx_codec_err_t        res = VPX_CODEC_OK;
    554     yv12->y_buffer = img->planes[VPX_PLANE_Y];
    555     yv12->u_buffer = img->planes[VPX_PLANE_U];
    556     yv12->v_buffer = img->planes[VPX_PLANE_V];
    557 
    558     yv12->y_width  = img->d_w;
    559     yv12->y_height = img->d_h;
    560     yv12->uv_width = yv12->y_width / 2;
    561     yv12->uv_height = yv12->y_height / 2;
    562 
    563     yv12->y_stride = img->stride[VPX_PLANE_Y];
    564     yv12->uv_stride = img->stride[VPX_PLANE_U];
    565 
    566     yv12->border  = (img->stride[VPX_PLANE_Y] - img->d_w) / 2;
    567     yv12->clrtype = (img->fmt == VPX_IMG_FMT_VPXI420 || img->fmt == VPX_IMG_FMT_VPXYV12);
    568 
    569     return res;
    570 }
    571 
    572 
    573 static vpx_codec_err_t vp8_set_reference(vpx_codec_alg_priv_t *ctx,
    574         int ctr_id,
    575         va_list args)
    576 {
    577 
    578     vpx_ref_frame_t *data = va_arg(args, vpx_ref_frame_t *);
    579 
    580     if (data)
    581     {
    582         vpx_ref_frame_t *frame = (vpx_ref_frame_t *)data;
    583         YV12_BUFFER_CONFIG sd;
    584 
    585         image2yuvconfig(&frame->img, &sd);
    586 
    587         vp8dx_set_reference(ctx->pbi, frame->frame_type, &sd);
    588         return VPX_CODEC_OK;
    589     }
    590     else
    591         return VPX_CODEC_INVALID_PARAM;
    592 
    593 }
    594 
    595 static vpx_codec_err_t vp8_get_reference(vpx_codec_alg_priv_t *ctx,
    596         int ctr_id,
    597         va_list args)
    598 {
    599 
    600     vpx_ref_frame_t *data = va_arg(args, vpx_ref_frame_t *);
    601 
    602     if (data)
    603     {
    604         vpx_ref_frame_t *frame = (vpx_ref_frame_t *)data;
    605         YV12_BUFFER_CONFIG sd;
    606 
    607         image2yuvconfig(&frame->img, &sd);
    608 
    609         vp8dx_get_reference(ctx->pbi, frame->frame_type, &sd);
    610         return VPX_CODEC_OK;
    611     }
    612     else
    613         return VPX_CODEC_INVALID_PARAM;
    614 
    615 }
    616 
    617 static vpx_codec_err_t vp8_set_postproc(vpx_codec_alg_priv_t *ctx,
    618                                         int ctr_id,
    619                                         va_list args)
    620 {
    621     vp8_postproc_cfg_t *data = va_arg(args, vp8_postproc_cfg_t *);
    622 #if CONFIG_POSTPROC
    623 
    624     if (data)
    625     {
    626         ctx->postproc_cfg_set = 1;
    627         ctx->postproc_cfg = *((vp8_postproc_cfg_t *)data);
    628         return VPX_CODEC_OK;
    629     }
    630     else
    631         return VPX_CODEC_INVALID_PARAM;
    632 
    633 #else
    634     return VPX_CODEC_INCAPABLE;
    635 #endif
    636 }
    637 
    638 static vpx_codec_err_t vp8_set_dbg_options(vpx_codec_alg_priv_t *ctx,
    639                                         int ctrl_id,
    640                                         va_list args)
    641 {
    642 #if CONFIG_POSTPROC_VISUALIZER && CONFIG_POSTPROC
    643     int data = va_arg(args, int);
    644 
    645 #define MAP(id, var) case id: var = data; break;
    646 
    647     switch (ctrl_id)
    648     {
    649         MAP (VP8_SET_DBG_COLOR_REF_FRAME,   ctx->dbg_color_ref_frame_flag);
    650         MAP (VP8_SET_DBG_COLOR_MB_MODES,    ctx->dbg_color_mb_modes_flag);
    651         MAP (VP8_SET_DBG_COLOR_B_MODES,     ctx->dbg_color_b_modes_flag);
    652         MAP (VP8_SET_DBG_DISPLAY_MV,        ctx->dbg_display_mv_flag);
    653     }
    654 
    655     return VPX_CODEC_OK;
    656 #else
    657     return VPX_CODEC_INCAPABLE;
    658 #endif
    659 }
    660 
    661 static vpx_codec_err_t vp8_get_last_ref_updates(vpx_codec_alg_priv_t *ctx,
    662                                                 int ctrl_id,
    663                                                 va_list args)
    664 {
    665     int *update_info = va_arg(args, int *);
    666     VP8D_COMP *pbi = (VP8D_COMP *)ctx->pbi;
    667 
    668     if (update_info)
    669     {
    670         *update_info = pbi->common.refresh_alt_ref_frame * (int) VP8_ALTR_FRAME
    671             + pbi->common.refresh_golden_frame * (int) VP8_GOLD_FRAME
    672             + pbi->common.refresh_last_frame * (int) VP8_LAST_FRAME;
    673 
    674         return VPX_CODEC_OK;
    675     }
    676     else
    677         return VPX_CODEC_INVALID_PARAM;
    678 }
    679 
    680 
    681 static vpx_codec_err_t vp8_get_frame_corrupted(vpx_codec_alg_priv_t *ctx,
    682                                                int ctrl_id,
    683                                                va_list args)
    684 {
    685 
    686     int *corrupted = va_arg(args, int *);
    687 
    688     if (corrupted)
    689     {
    690         VP8D_COMP *pbi = (VP8D_COMP *)ctx->pbi;
    691         *corrupted = pbi->common.frame_to_show->corrupted;
    692 
    693         return VPX_CODEC_OK;
    694     }
    695     else
    696         return VPX_CODEC_INVALID_PARAM;
    697 
    698 }
    699 
    700 vpx_codec_ctrl_fn_map_t vp8_ctf_maps[] =
    701 {
    702     {VP8_SET_REFERENCE,             vp8_set_reference},
    703     {VP8_COPY_REFERENCE,            vp8_get_reference},
    704     {VP8_SET_POSTPROC,              vp8_set_postproc},
    705     {VP8_SET_DBG_COLOR_REF_FRAME,   vp8_set_dbg_options},
    706     {VP8_SET_DBG_COLOR_MB_MODES,    vp8_set_dbg_options},
    707     {VP8_SET_DBG_COLOR_B_MODES,     vp8_set_dbg_options},
    708     {VP8_SET_DBG_DISPLAY_MV,        vp8_set_dbg_options},
    709     {VP8D_GET_LAST_REF_UPDATES,     vp8_get_last_ref_updates},
    710     {VP8D_GET_FRAME_CORRUPTED,      vp8_get_frame_corrupted},
    711     { -1, NULL},
    712 };
    713 
    714 
    715 #ifndef VERSION_STRING
    716 #define VERSION_STRING
    717 #endif
    718 CODEC_INTERFACE(vpx_codec_vp8_dx) =
    719 {
    720     "WebM Project VP8 Decoder" VERSION_STRING,
    721     VPX_CODEC_INTERNAL_ABI_VERSION,
    722     VPX_CODEC_CAP_DECODER | VP8_CAP_POSTPROC,
    723     /* vpx_codec_caps_t          caps; */
    724     vp8_init,         /* vpx_codec_init_fn_t       init; */
    725     vp8_destroy,      /* vpx_codec_destroy_fn_t    destroy; */
    726     vp8_ctf_maps,     /* vpx_codec_ctrl_fn_map_t  *ctrl_maps; */
    727     vp8_xma_get_mmap, /* vpx_codec_get_mmap_fn_t   get_mmap; */
    728     vp8_xma_set_mmap, /* vpx_codec_set_mmap_fn_t   set_mmap; */
    729     {
    730         vp8_peek_si,      /* vpx_codec_peek_si_fn_t    peek_si; */
    731         vp8_get_si,       /* vpx_codec_get_si_fn_t     get_si; */
    732         vp8_decode,       /* vpx_codec_decode_fn_t     decode; */
    733         vp8_get_frame,    /* vpx_codec_frame_get_fn_t  frame_get; */
    734     },
    735     { /* encoder functions */
    736         NOT_IMPLEMENTED,
    737         NOT_IMPLEMENTED,
    738         NOT_IMPLEMENTED,
    739         NOT_IMPLEMENTED,
    740         NOT_IMPLEMENTED,
    741         NOT_IMPLEMENTED
    742     }
    743 };
    744 
    745 /*
    746  * BEGIN BACKWARDS COMPATIBILITY SHIM.
    747  */
    748 vpx_codec_iface_t vpx_codec_vp8_algo =
    749 {
    750     "WebM Project VP8 Decoder (Deprecated API)" VERSION_STRING,
    751     VPX_CODEC_INTERNAL_ABI_VERSION,
    752     VPX_CODEC_CAP_DECODER | VP8_CAP_POSTPROC,
    753     /* vpx_codec_caps_t          caps; */
    754     vp8_init,         /* vpx_codec_init_fn_t       init; */
    755     vp8_destroy,      /* vpx_codec_destroy_fn_t    destroy; */
    756     vp8_ctf_maps,     /* vpx_codec_ctrl_fn_map_t  *ctrl_maps; */
    757     vp8_xma_get_mmap, /* vpx_codec_get_mmap_fn_t   get_mmap; */
    758     vp8_xma_set_mmap, /* vpx_codec_set_mmap_fn_t   set_mmap; */
    759     {
    760         vp8_peek_si,      /* vpx_codec_peek_si_fn_t    peek_si; */
    761         vp8_get_si,       /* vpx_codec_get_si_fn_t     get_si; */
    762         vp8_decode,       /* vpx_codec_decode_fn_t     decode; */
    763         vp8_get_frame,    /* vpx_codec_frame_get_fn_t  frame_get; */
    764     },
    765     { /* encoder functions */
    766         NOT_IMPLEMENTED,
    767         NOT_IMPLEMENTED,
    768         NOT_IMPLEMENTED,
    769         NOT_IMPLEMENTED,
    770         NOT_IMPLEMENTED,
    771         NOT_IMPLEMENTED
    772     }
    773 };
    774