| /* | 
 |  *  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 <assert.h> | 
 | #include <stdlib.h> | 
 | #include <string.h> | 
 | #include "./vp8_rtcd.h" | 
 | #include "./vpx_dsp_rtcd.h" | 
 | #include "./vpx_scale_rtcd.h" | 
 | #include "vpx/vpx_decoder.h" | 
 | #include "vpx/vp8dx.h" | 
 | #include "vpx/internal/vpx_codec_internal.h" | 
 | #include "vpx_version.h" | 
 | #include "common/alloccommon.h" | 
 | #include "common/common.h" | 
 | #include "common/onyxd.h" | 
 | #include "decoder/onyxd_int.h" | 
 | #include "vpx_dsp/vpx_dsp_common.h" | 
 | #include "vpx_mem/vpx_mem.h" | 
 | #include "vpx_ports/system_state.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]))) | 
 |  | 
 | struct vpx_codec_alg_priv { | 
 |   vpx_codec_priv_t base; | 
 |   vpx_codec_dec_cfg_t cfg; | 
 |   vp8_stream_info_t si; | 
 |   int decoder_init; | 
 | #if CONFIG_MULTITHREAD | 
 |   // Restart threads on next frame if set to 1. | 
 |   // This is set when error happens in multithreaded decoding and all threads | 
 |   // are shut down. | 
 |   int restart_threads; | 
 | #endif | 
 |   int postproc_cfg_set; | 
 |   vp8_postproc_cfg_t postproc_cfg; | 
 |   vpx_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 int vp8_init_ctx(vpx_codec_ctx_t *ctx) { | 
 |   vpx_codec_alg_priv_t *priv = | 
 |       (vpx_codec_alg_priv_t *)vpx_calloc(1, sizeof(*priv)); | 
 |   if (!priv) return 1; | 
 |  | 
 |   ctx->priv = (vpx_codec_priv_t *)priv; | 
 |   ctx->priv->init_flags = ctx->init_flags; | 
 |  | 
 |   priv->si.sz = sizeof(priv->si); | 
 |   priv->decrypt_cb = NULL; | 
 |   priv->decrypt_state = NULL; | 
 |  | 
 |   if (ctx->config.dec) { | 
 |     /* Update the reference to the config structure to an internal copy. */ | 
 |     priv->cfg = *ctx->config.dec; | 
 |     ctx->config.dec = &priv->cfg; | 
 |   } | 
 |  | 
 |   return 0; | 
 | } | 
 |  | 
 | 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(); | 
 |   vpx_dsp_rtcd(); | 
 |   vpx_scale_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_alg_priv_t *priv; | 
 |  | 
 |     if (vp8_init_ctx(ctx)) return VPX_CODEC_MEM_ERROR; | 
 |  | 
 |     priv = (vpx_codec_alg_priv_t *)ctx->priv; | 
 |  | 
 |     /* initialize number of fragments to zero */ | 
 |     priv->fragments.count = 0; | 
 |     /* is input fragments enabled? */ | 
 |     priv->fragments.enabled = | 
 |         (priv->base.init_flags & VPX_CODEC_USE_INPUT_FRAGMENTS); | 
 |  | 
 |     /*post processing level initialized to do nothing */ | 
 |   } | 
 |  | 
 |   return res; | 
 | } | 
 |  | 
 | static vpx_codec_err_t vp8_destroy(vpx_codec_alg_priv_t *ctx) { | 
 |   vp8_remove_decoder_instances(&ctx->yv12_frame_buffers); | 
 |  | 
 |   vpx_free(ctx); | 
 |  | 
 |   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, | 
 |                                             vpx_decrypt_cb decrypt_cb, | 
 |                                             void *decrypt_state) { | 
 |   vpx_codec_err_t res = VPX_CODEC_OK; | 
 |  | 
 |   assert(data != NULL); | 
 |  | 
 |   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 = VPXMIN(sizeof(clear_buffer), 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) { | 
 |         return 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_CORRUPT_FRAME; | 
 |     } 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 = img->r_w = yv12->y_width; | 
 |   img->d_h = img->r_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->bit_depth = 8; | 
 |   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, | 
 |                             volatile vpx_codec_err_t *res) { | 
 |   *res = VPX_CODEC_OK; | 
 |  | 
 |   if (ctx->fragments.count == 0) { | 
 |     /* New frame, reset fragment pointers and sizes */ | 
 |     memset((void *)ctx->fragments.ptrs, 0, sizeof(ctx->fragments.ptrs)); | 
 |     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 && (data == NULL && data_sz == 0)) { | 
 |     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) { | 
 |   volatile vpx_codec_err_t res; | 
 |   volatile unsigned int resolution_change = 0; | 
 |   unsigned int w, h; | 
 |  | 
 |   if (!ctx->fragments.enabled && (data == NULL && data_sz == 0)) { | 
 |     return 0; | 
 |   } | 
 |  | 
 |   /* 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; | 
 |  | 
 | #if CONFIG_MULTITHREAD | 
 |   if (!res && ctx->restart_threads) { | 
 |     struct frame_buffers *fb = &ctx->yv12_frame_buffers; | 
 |     VP8D_COMP *pbi = ctx->yv12_frame_buffers.pbi[0]; | 
 |     VP8_COMMON *const pc = &pbi->common; | 
 |     if (setjmp(pbi->common.error.jmp)) { | 
 |       vp8_remove_decoder_instances(fb); | 
 |       vp8_zero(fb->pbi); | 
 |       vpx_clear_system_state(); | 
 |       return VPX_CODEC_ERROR; | 
 |     } | 
 |     pbi->common.error.setjmp = 1; | 
 |     pbi->max_threads = ctx->cfg.threads; | 
 |     vp8_decoder_create_threads(pbi); | 
 |     if (vpx_atomic_load_acquire(&pbi->b_multithreaded_rd)) { | 
 |       vp8mt_alloc_temp_buffers(pbi, pc->Width, pc->mb_rows); | 
 |     } | 
 |     ctx->restart_threads = 0; | 
 |     pbi->common.error.setjmp = 0; | 
 |   } | 
 | #endif | 
 |   /* Initialize the decoder instance on the first frame*/ | 
 |   if (!res && !ctx->decoder_init) { | 
 |     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); | 
 |     if (res == VPX_CODEC_OK) ctx->decoder_init = 1; | 
 |   } | 
 |  | 
 |   /* Set these even if already initialized.  The caller may have changed the | 
 |    * decrypt config between frames. | 
 |    */ | 
 |   if (ctx->decoder_init) { | 
 |     ctx->yv12_frame_buffers.pbi[0]->decrypt_cb = ctx->decrypt_cb; | 
 |     ctx->yv12_frame_buffers.pbi[0]->decrypt_state = ctx->decrypt_state; | 
 |   } | 
 |  | 
 |   if (!res) { | 
 |     VP8D_COMP *pbi = ctx->yv12_frame_buffers.pbi[0]; | 
 |     VP8_COMMON *const pc = &pbi->common; | 
 |     if (resolution_change) { | 
 |       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; | 
 |           /* on failure clear the cached resolution to ensure a full | 
 |            * reallocation is attempted on resync. */ | 
 |           ctx->si.w = 0; | 
 |           ctx->si.h = 0; | 
 |           vpx_clear_system_state(); | 
 |           /* 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 (vpx_atomic_load_acquire(&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; | 
 |     } | 
 |  | 
 |     if (setjmp(pbi->common.error.jmp)) { | 
 |       vpx_clear_system_state(); | 
 |       /* We do not know if the missing frame(s) was supposed to update | 
 |        * any of the reference buffers, but we act conservative and | 
 |        * mark only the last buffer as corrupted. | 
 |        */ | 
 |       pc->yv12_fb[pc->lst_fb_idx].corrupted = 1; | 
 |  | 
 |       if (pc->fb_idx_ref_cnt[pc->new_fb_idx] > 0) { | 
 |         pc->fb_idx_ref_cnt[pc->new_fb_idx]--; | 
 |       } | 
 |       pc->error.setjmp = 0; | 
 | #if CONFIG_MULTITHREAD | 
 |       if (pbi->restart_threads) { | 
 |         ctx->si.w = 0; | 
 |         ctx->si.h = 0; | 
 |         ctx->restart_threads = 1; | 
 |       } | 
 | #endif | 
 |       res = update_error_state(ctx, &pbi->common.error); | 
 |       return res; | 
 |     } | 
 |  | 
 |     pbi->common.error.setjmp = 1; | 
 |  | 
 |     /* update the pbi fragment data */ | 
 |     pbi->fragments = ctx->fragments; | 
 | #if CONFIG_MULTITHREAD | 
 |     pbi->restart_threads = 0; | 
 | #endif | 
 |     ctx->user_priv = user_priv; | 
 |     if (vp8dx_receive_compressed_data(pbi, 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; | 
 |     vp8_zero(flags); | 
 |  | 
 |     if (ctx->base.init_flags & VPX_CODEC_USE_POSTPROC) { | 
 |       flags.post_proc_flag = ctx->postproc_cfg.post_proc_flag; | 
 |       flags.deblocking_level = ctx->postproc_cfg.deblocking_level; | 
 |       flags.noise_level = ctx->postproc_cfg.noise_level; | 
 |     } | 
 |  | 
 |     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 image2yuvconfig(const vpx_image_t *img, | 
 |                                        YV12_BUFFER_CONFIG *yv12) { | 
 |   const int y_w = img->d_w; | 
 |   const int y_h = img->d_h; | 
 |   const int uv_w = (img->d_w + 1) / 2; | 
 |   const int uv_h = (img->d_h + 1) / 2; | 
 |   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 = y_w; | 
 |   yv12->y_crop_height = y_h; | 
 |   yv12->y_width = y_w; | 
 |   yv12->y_height = y_h; | 
 |   yv12->uv_crop_width = uv_w; | 
 |   yv12->uv_crop_height = uv_h; | 
 |   yv12->uv_width = uv_w; | 
 |   yv12->uv_height = uv_h; | 
 |  | 
 |   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, | 
 |                                          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 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, | 
 |                                          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 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_get_quantizer(vpx_codec_alg_priv_t *ctx, | 
 |                                          va_list args) { | 
 |   int *const arg = va_arg(args, int *); | 
 |   VP8D_COMP *pbi = ctx->yv12_frame_buffers.pbi[0]; | 
 |   if (arg == NULL) return VPX_CODEC_INVALID_PARAM; | 
 |   if (pbi == NULL) return VPX_CODEC_CORRUPT_FRAME; | 
 |   *arg = vp8dx_get_quantizer(pbi); | 
 |   return VPX_CODEC_OK; | 
 | } | 
 |  | 
 | static vpx_codec_err_t vp8_set_postproc(vpx_codec_alg_priv_t *ctx, | 
 |                                         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 | 
 |   (void)ctx; | 
 |   (void)args; | 
 |   return VPX_CODEC_INCAPABLE; | 
 | #endif | 
 | } | 
 |  | 
 | static vpx_codec_err_t vp8_get_last_ref_updates(vpx_codec_alg_priv_t *ctx, | 
 |                                                 va_list args) { | 
 |   int *update_info = va_arg(args, int *); | 
 |  | 
 |   if (update_info) { | 
 |     VP8D_COMP *pbi = (VP8D_COMP *)ctx->yv12_frame_buffers.pbi[0]; | 
 |     if (pbi == NULL) return VPX_CODEC_CORRUPT_FRAME; | 
 |  | 
 |     *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; | 
 |   } | 
 | } | 
 |  | 
 | static vpx_codec_err_t vp8_get_last_ref_frame(vpx_codec_alg_priv_t *ctx, | 
 |                                               va_list args) { | 
 |   int *ref_info = va_arg(args, int *); | 
 |  | 
 |   if (ref_info) { | 
 |     VP8D_COMP *pbi = (VP8D_COMP *)ctx->yv12_frame_buffers.pbi[0]; | 
 |     if (pbi) { | 
 |       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_CORRUPT_FRAME; | 
 |     } | 
 |   } else { | 
 |     return VPX_CODEC_INVALID_PARAM; | 
 |   } | 
 | } | 
 |  | 
 | static vpx_codec_err_t vp8_get_frame_corrupted(vpx_codec_alg_priv_t *ctx, | 
 |                                                va_list args) { | 
 |   int *corrupted = va_arg(args, int *); | 
 |   VP8D_COMP *pbi = (VP8D_COMP *)ctx->yv12_frame_buffers.pbi[0]; | 
 |  | 
 |   if (corrupted && pbi) { | 
 |     const YV12_BUFFER_CONFIG *const frame = pbi->common.frame_to_show; | 
 |     if (frame == NULL) return VPX_CODEC_ERROR; | 
 |     *corrupted = frame->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, | 
 |                                          va_list args) { | 
 |   vpx_decrypt_init *init = va_arg(args, vpx_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; | 
 | } | 
 |  | 
 | static 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 }, | 
 |   { 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 }, | 
 |   { VPXD_GET_LAST_QUANTIZER, vp8_get_quantizer }, | 
 |   { VPXD_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_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; */ | 
 |       NULL, | 
 |   }, | 
 |   { | 
 |       /* encoder functions */ | 
 |       0, NULL, /* vpx_codec_enc_cfg_map_t */ | 
 |       NULL,    /* vpx_codec_encode_fn_t */ | 
 |       NULL,    /* vpx_codec_get_cx_data_fn_t */ | 
 |       NULL,    /* vpx_codec_enc_config_set_fn_t */ | 
 |       NULL,    /* vpx_codec_get_global_headers_fn_t */ | 
 |       NULL,    /* vpx_codec_get_preview_frame_fn_t */ | 
 |       NULL     /* vpx_codec_enc_mr_get_mem_loc_fn_t */ | 
 |   } | 
 | }; |