The Tor Browser: media/libvpx/vp9/vp9_dx_iface.c@ac0c01689b40 (annotated)

media/libvpx/vp9/vp9_dx_iface.c@ac0c01689b40 (annotated)

media/libvpx/vp9/vp9_dx_iface.c

Thu, 15 Jan 2015 15:59:08 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 15 Jan 2015 15:59:08 +0100
branch: TOR_BUG_9701
changeset 10: ac0c01689b40
permissions: -rw-r--r--

Implement a real Private Browsing Mode condition by changing the API/ABI;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

 /*
  *  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 "vpx/vpx_decoder.h"
 #include "vpx/vp8dx.h"
 #include "vpx/internal/vpx_codec_internal.h"
 #include "./vpx_version.h"
 #include "vp9/decoder/vp9_onyxd.h"
 #include "vp9/decoder/vp9_onyxd_int.h"
 #include "vp9/decoder/vp9_read_bit_buffer.h"
 #include "vp9/vp9_iface_common.h"
 #define VP9_CAP_POSTPROC (CONFIG_VP9_POSTPROC ? VPX_CODEC_CAP_POSTPROC : 0)
 typedef vpx_codec_stream_info_t  vp9_stream_info_t;
 /* Structures for handling memory allocations */
 typedef enum {
   VP9_SEG_ALG_PRIV     = 256,
   VP9_SEG_MAX
 } mem_seg_id_t;
 #define NELEMENTS(x) ((int)(sizeof(x)/sizeof(x[0])))
 static unsigned long priv_sz(const vpx_codec_dec_cfg_t *si,
                              vpx_codec_flags_t flags);
 static const mem_req_t vp9_mem_req_segs[] = {
   {VP9_SEG_ALG_PRIV, 0, 8, VPX_CODEC_MEM_ZERO, priv_sz},
   {VP9_SEG_MAX, 0, 0, 0, NULL}
 };
 struct vpx_codec_alg_priv {
   vpx_codec_priv_t        base;
   vpx_codec_mmap_t        mmaps[NELEMENTS(vp9_mem_req_segs) - 1];
   vpx_codec_dec_cfg_t     cfg;
   vp9_stream_info_t       si;
   int                     defer_alloc;
   int                     decoder_init;
   VP9D_PTR                pbi;
   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
   vpx_image_t             img;
   int                     img_setup;
   int                     img_avail;
   int                     invert_tile_order;
 };
 static unsigned long 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 vp9_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 = vp9_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->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 vp9_finalize_mmaps(vpx_codec_alg_priv_t *ctx) {
   /* nothing to clean up */
 }
 static vpx_codec_err_t vp9_init(vpx_codec_ctx_t *ctx,
                                 vpx_codec_priv_enc_mr_cfg_t *data) {
   vpx_codec_err_t        res = VPX_CODEC_OK;
   /* 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 = vp9_mem_req_segs[0].id;
     mmap.sz = sizeof(vpx_codec_alg_priv_t);
     mmap.align = vp9_mem_req_segs[0].align;
     mmap.flags = vp9_mem_req_segs[0].flags;
     res = vpx_mmap_alloc(&mmap);
     if (!res) {
       vp9_init_ctx(ctx, &mmap);
       ctx->priv->alg_priv->defer_alloc = 1;
       /*post processing level initialized to do nothing */
     }
   }
   return res;
 }
 static vpx_codec_err_t vp9_destroy(vpx_codec_alg_priv_t *ctx) {
   int i;
   vp9_remove_decompressor(ctx->pbi);
   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 vp9_peek_si(const uint8_t         *data,
                                    unsigned int           data_sz,
                                    vpx_codec_stream_info_t *si) {
   if (data_sz <= 8) return VPX_CODEC_UNSUP_BITSTREAM;
   if (data + data_sz <= data) return VPX_CODEC_INVALID_PARAM;
   si->is_kf = 0;
   si->w = si->h = 0;
   {
     struct vp9_read_bit_buffer rb = { data, data + data_sz, 0, NULL, NULL };
     const int frame_marker = vp9_rb_read_literal(&rb, 2);
     const int version = vp9_rb_read_bit(&rb) | (vp9_rb_read_bit(&rb) << 1);
     if (frame_marker != 0x2) return VPX_CODEC_UNSUP_BITSTREAM;
 #if CONFIG_NON420
     if (version > 1) return VPX_CODEC_UNSUP_BITSTREAM;
 #else
     if (version != 0) return VPX_CODEC_UNSUP_BITSTREAM;
 #endif
     if (vp9_rb_read_bit(&rb)) {  // show an existing frame
       return VPX_CODEC_OK;
     }
     si->is_kf = !vp9_rb_read_bit(&rb);
     if (si->is_kf) {
       const int sRGB = 7;
       int colorspace;
       rb.bit_offset += 1;  // show frame
       rb.bit_offset += 1;  // error resilient
       if (vp9_rb_read_literal(&rb, 8) != VP9_SYNC_CODE_0 ||
           vp9_rb_read_literal(&rb, 8) != VP9_SYNC_CODE_1 ||
           vp9_rb_read_literal(&rb, 8) != VP9_SYNC_CODE_2) {
         return VPX_CODEC_UNSUP_BITSTREAM;
       }
       colorspace = vp9_rb_read_literal(&rb, 3);
       if (colorspace != sRGB) {
         rb.bit_offset += 1;  // [16,235] (including xvycc) vs [0,255] range
         if (version == 1) {
           rb.bit_offset += 2;  // subsampling x/y
           rb.bit_offset += 1;  // has extra plane
         }
       } else {
         if (version == 1) {
           rb.bit_offset += 1;  // has extra plane
         } else {
           // RGB is only available in version 1
           return VPX_CODEC_UNSUP_BITSTREAM;
         }
       }
       // TODO(jzern): these are available on non-keyframes in intra only mode.
       si->w = vp9_rb_read_literal(&rb, 16) + 1;
       si->h = vp9_rb_read_literal(&rb, 16) + 1;
     }
   }
   return VPX_CODEC_OK;
 }
 static vpx_codec_err_t vp9_get_si(vpx_codec_alg_priv_t    *ctx,
                                   vpx_codec_stream_info_t *si) {
   unsigned int sz;
   if (si->sz >= sizeof(vp9_stream_info_t))
     sz = sizeof(vp9_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 vpx_codec_err_t decode_one(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;
   ctx->img_avail = 0;
   /* 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.
    */
   if (!ctx->si.h)
     res = ctx->base.iface->dec.peek_si(*data, data_sz, &ctx->si);
   /* 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 = vp9_mem_req_segs[i].id;
       ctx->mmaps[i].sz = vp9_mem_req_segs[i].sz;
       ctx->mmaps[i].align = vp9_mem_req_segs[i].align;
       ctx->mmaps[i].flags = vp9_mem_req_segs[i].flags;
       if (!ctx->mmaps[i].sz)
         ctx->mmaps[i].sz = vp9_mem_req_segs[i].calc_sz(&cfg,
                                                        ctx->base.init_flags);
       res = vpx_mmap_alloc(&ctx->mmaps[i]);
     }
     if (!res)
       vp9_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,
                              vp9_mem_req_segs, NELEMENTS(vp9_mem_req_segs),
                              ctx->base.init_flags);
     if (!res) {
       VP9D_CONFIG oxcf;
       VP9D_PTR optr;
       vp9_initialize_dec();
       oxcf.width = ctx->si.w;
       oxcf.height = ctx->si.h;
       oxcf.version = 9;
       oxcf.postprocess = 0;
       oxcf.max_threads = ctx->cfg.threads;
       oxcf.inv_tile_order = ctx->invert_tile_order;
       optr = vp9_create_decompressor(&oxcf);
       /* 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;
         ctx->postproc_cfg.deblocking_level = 4;
         ctx->postproc_cfg.noise_level = 0;
       }
       if (!optr)
         res = VPX_CODEC_ERROR;
       else
         ctx->pbi = optr;
     }
     ctx->decoder_init = 1;
   }
   if (!res && ctx->pbi) {
     YV12_BUFFER_CONFIG sd;
     int64_t time_stamp = 0, time_end_stamp = 0;
     vp9_ppflags_t flags = {0};
     if (ctx->base.init_flags & VPX_CODEC_USE_POSTPROC) {
       flags.post_proc_flag =
 #if CONFIG_POSTPROC_VISUALIZER
           ((ctx->dbg_color_ref_frame_flag != 0) ?
               VP9D_DEBUG_CLR_FRM_REF_BLKS : 0)
           | ((ctx->dbg_color_mb_modes_flag != 0) ?
               VP9D_DEBUG_CLR_BLK_MODES : 0)
           | ((ctx->dbg_color_b_modes_flag != 0) ?
               VP9D_DEBUG_CLR_BLK_MODES : 0)
           | ((ctx->dbg_display_mv_flag != 0) ?
               VP9D_DEBUG_DRAW_MV : 0)
           |
 #endif
           ctx->postproc_cfg.post_proc_flag;
       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 (vp9_receive_compressed_data(ctx->pbi, data_sz, data, deadline)) {
       VP9D_COMP *pbi = (VP9D_COMP *)ctx->pbi;
       res = update_error_state(ctx, &pbi->common.error);
     }
     if (!res && 0 == vp9_get_raw_frame(ctx->pbi, &sd, &time_stamp,
                                        &time_end_stamp, &flags)) {
       yuvconfig2image(&ctx->img, &sd, user_priv);
       ctx->img_avail = 1;
     }
   }
   return res;
 }
 static void parse_superframe_index(const uint8_t *data,
                                    size_t         data_sz,
                                    uint32_t       sizes[8],
                                    int           *count) {
   uint8_t marker;
   assert(data_sz);
   marker = data[data_sz - 1];
   *count = 0;
   if ((marker & 0xe0) == 0xc0) {
     const uint32_t frames = (marker & 0x7) + 1;
     const uint32_t mag = ((marker >> 3) & 0x3) + 1;
     const size_t index_sz = 2 + mag * frames;
     if (data_sz >= index_sz && data[data_sz - index_sz] == marker) {
       // found a valid superframe index
       uint32_t i, j;
       const uint8_t *x = data + data_sz - index_sz + 1;
       for (i = 0; i < frames; i++) {
         uint32_t this_sz = 0;
         for (j = 0; j < mag; j++)
           this_sz |= (*x++) << (j * 8);
         sizes[i] = this_sz;
       }
       *count = frames;
     }
   }
 }
 static vpx_codec_err_t vp9_decode(vpx_codec_alg_priv_t  *ctx,
                                   const uint8_t         *data,
                                   unsigned int           data_sz,
                                   void                  *user_priv,
                                   long                   deadline) {
   const uint8_t *data_start = data;
   const uint8_t *data_end = data + data_sz;
   vpx_codec_err_t res = 0;
   uint32_t sizes[8];
   int frames_this_pts, frame_count = 0;
   if (data == NULL || data_sz == 0) return VPX_CODEC_INVALID_PARAM;
   parse_superframe_index(data, data_sz, sizes, &frames_this_pts);
   do {
     // Skip over the superframe index, if present
     if (data_sz && (*data_start & 0xe0) == 0xc0) {
       const uint8_t marker = *data_start;
       const uint32_t frames = (marker & 0x7) + 1;
       const uint32_t mag = ((marker >> 3) & 0x3) + 1;
       const uint32_t index_sz = 2 + mag * frames;
       if (data_sz >= index_sz && data_start[index_sz - 1] == marker) {
         data_start += index_sz;
         data_sz -= index_sz;
         if (data_start < data_end)
           continue;
         else
           break;
       }
     }
     // Use the correct size for this frame, if an index is present.
     if (frames_this_pts) {
       uint32_t this_sz = sizes[frame_count];
       if (data_sz < this_sz) {
         ctx->base.err_detail = "Invalid frame size in index";
         return VPX_CODEC_CORRUPT_FRAME;
       }
       data_sz = this_sz;
       frame_count++;
     }
     res = decode_one(ctx, &data_start, data_sz, user_priv, deadline);
     assert(data_start >= data);
     assert(data_start <= data_end);
     /* Early exit if there was a decode error */
     if (res)
       break;
     /* Account for suboptimal termination by the encoder. */
     while (data_start < data_end && *data_start == 0)
       data_start++;
     data_sz = data_end - data_start;
   } while (data_start < data_end);
   return res;
 }
 static vpx_image_t *vp9_get_frame(vpx_codec_alg_priv_t  *ctx,
                                   vpx_codec_iter_t      *iter) {
   vpx_image_t *img = NULL;
   if (ctx->img_avail) {
     /* iter acts as a flip flop, so an image is only returned on the first
      * call to get_frame.
      */
     if (!(*iter)) {
       img = &ctx->img;
       *iter = img;
     }
   }
   ctx->img_avail = 0;
   return img;
 }
 static vpx_codec_err_t vp9_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 = vp9_mem_req_segs;
     else if (seg_iter->id != VP9_SEG_MAX)
       seg_iter++;
     *iter = (vpx_codec_iter_t)seg_iter;
     if (seg_iter->id != VP9_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 vp9_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 == VP9_SEG_ALG_PRIV) {
       if (!ctx->priv) {
         vp9_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) {
     vp9_finalize_mmaps(ctx->priv->alg_priv);
     res = ctx->iface->init(ctx, NULL);
   }
   return res;
 }
 static vpx_codec_err_t 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) {
     vpx_ref_frame_t *frame = (vpx_ref_frame_t *)data;
     YV12_BUFFER_CONFIG sd;
     image2yuvconfig(&frame->img, &sd);
     return vp9_set_reference_dec(ctx->pbi,
                                  (VP9_REFFRAME)frame->frame_type, &sd);
   } else {
     return VPX_CODEC_INVALID_PARAM;
   }
 }
 static vpx_codec_err_t copy_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) {
     vpx_ref_frame_t *frame = (vpx_ref_frame_t *)data;
     YV12_BUFFER_CONFIG sd;
     image2yuvconfig(&frame->img, &sd);
     return vp9_copy_reference_dec(ctx->pbi,
                                   (VP9_REFFRAME)frame->frame_type, &sd);
   } else {
     return VPX_CODEC_INVALID_PARAM;
   }
 }
 static vpx_codec_err_t get_reference(vpx_codec_alg_priv_t *ctx,
                                      int ctr_id,
                                      va_list args) {
   vp9_ref_frame_t *data = va_arg(args, vp9_ref_frame_t *);
   if (data) {
     YV12_BUFFER_CONFIG* fb;
     vp9_get_reference_dec(ctx->pbi, data->idx, &fb);
     yuvconfig2image(&data->img, fb, NULL);
     return VPX_CODEC_OK;
   } else {
     return VPX_CODEC_INVALID_PARAM;
   }
 }
 static vpx_codec_err_t set_postproc(vpx_codec_alg_priv_t *ctx,
                                     int ctr_id,
                                     va_list args) {
 #if CONFIG_VP9_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 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 get_last_ref_updates(vpx_codec_alg_priv_t *ctx,
                                             int ctrl_id,
                                             va_list args) {
   int *update_info = va_arg(args, int *);
   VP9D_COMP *pbi = (VP9D_COMP *)ctx->pbi;
   if (update_info) {
     *update_info = pbi->refresh_frame_flags;
     return VPX_CODEC_OK;
   } else {
     return VPX_CODEC_INVALID_PARAM;
   }
 }
 static vpx_codec_err_t get_frame_corrupted(vpx_codec_alg_priv_t *ctx,
                                            int ctrl_id,
                                            va_list args) {
   int *corrupted = va_arg(args, int *);
   if (corrupted) {
     VP9D_COMP *pbi = (VP9D_COMP *)ctx->pbi;
     if (pbi)
       *corrupted = pbi->common.frame_to_show->corrupted;
     else
       return VPX_CODEC_ERROR;
     return VPX_CODEC_OK;
   } else {
     return VPX_CODEC_INVALID_PARAM;
   }
 }
 static vpx_codec_err_t set_invert_tile_order(vpx_codec_alg_priv_t *ctx,
                                              int ctr_id,
                                              va_list args) {
   ctx->invert_tile_order = va_arg(args, int);
   return VPX_CODEC_OK;
 }
 static vpx_codec_ctrl_fn_map_t ctf_maps[] = {
   {VP8_SET_REFERENCE,             set_reference},
   {VP8_COPY_REFERENCE,            copy_reference},
   {VP8_SET_POSTPROC,              set_postproc},
   {VP8_SET_DBG_COLOR_REF_FRAME,   set_dbg_options},
   {VP8_SET_DBG_COLOR_MB_MODES,    set_dbg_options},
   {VP8_SET_DBG_COLOR_B_MODES,     set_dbg_options},
   {VP8_SET_DBG_DISPLAY_MV,        set_dbg_options},
   {VP8D_GET_LAST_REF_UPDATES,     get_last_ref_updates},
   {VP8D_GET_FRAME_CORRUPTED,      get_frame_corrupted},
   {VP9_GET_REFERENCE,             get_reference},
   {VP9_INVERT_TILE_DECODE_ORDER,  set_invert_tile_order},
   { -1, NULL},
 };
 #ifndef VERSION_STRING
 #define VERSION_STRING
 #endif
 CODEC_INTERFACE(vpx_codec_vp9_dx) = {
   "WebM Project VP9 Decoder" VERSION_STRING,
   VPX_CODEC_INTERNAL_ABI_VERSION,
   VPX_CODEC_CAP_DECODER | VP9_CAP_POSTPROC,
   /* vpx_codec_caps_t          caps; */
   vp9_init,         /* vpx_codec_init_fn_t       init; */
   vp9_destroy,      /* vpx_codec_destroy_fn_t    destroy; */
   ctf_maps,         /* vpx_codec_ctrl_fn_map_t  *ctrl_maps; */
   vp9_xma_get_mmap, /* vpx_codec_get_mmap_fn_t   get_mmap; */
   vp9_xma_set_mmap, /* vpx_codec_set_mmap_fn_t   set_mmap; */
   { // NOLINT
     vp9_peek_si,      /* vpx_codec_peek_si_fn_t    peek_si; */
     vp9_get_si,       /* vpx_codec_get_si_fn_t     get_si; */
     vp9_decode,       /* vpx_codec_decode_fn_t     decode; */
     vp9_get_frame,    /* vpx_codec_frame_get_fn_t  frame_get; */
   },
   { // NOLINT
     /* encoder functions */
     NOT_IMPLEMENTED,
     NOT_IMPLEMENTED,
     NOT_IMPLEMENTED,
     NOT_IMPLEMENTED,
     NOT_IMPLEMENTED,
     NOT_IMPLEMENTED
   }
 };

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media/libvpx/vp9/vp9_dx_iface.c@ac0c01689b40 (annotated)

media/libvpx/vp9/vp9_dx_iface.c