| Index: source/libvpx/vp8/decoder/decodeframe.c
|
| ===================================================================
|
| --- source/libvpx/vp8/decoder/decodeframe.c (revision 0)
|
| +++ source/libvpx/vp8/decoder/decodeframe.c (revision 0)
|
| @@ -0,0 +1,1389 @@
|
| +/*
|
| + * 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 "vpx_config.h"
|
| +#include "vp8_rtcd.h"
|
| +#include "./vpx_scale_rtcd.h"
|
| +#include "onyxd_int.h"
|
| +#include "vp8/common/header.h"
|
| +#include "vp8/common/reconintra4x4.h"
|
| +#include "vp8/common/reconinter.h"
|
| +#include "detokenize.h"
|
| +#include "vp8/common/invtrans.h"
|
| +#include "vp8/common/alloccommon.h"
|
| +#include "vp8/common/entropymode.h"
|
| +#include "vp8/common/quant_common.h"
|
| +#include "vpx_scale/vpx_scale.h"
|
| +#include "vp8/common/setupintrarecon.h"
|
| +
|
| +#include "decodemv.h"
|
| +#include "vp8/common/extend.h"
|
| +#if CONFIG_ERROR_CONCEALMENT
|
| +#include "error_concealment.h"
|
| +#endif
|
| +#include "vpx_mem/vpx_mem.h"
|
| +#include "vp8/common/threading.h"
|
| +#include "decoderthreading.h"
|
| +#include "dboolhuff.h"
|
| +
|
| +#include <assert.h>
|
| +#include <stdio.h>
|
| +
|
| +void vp8cx_init_de_quantizer(VP8D_COMP *pbi)
|
| +{
|
| + int Q;
|
| + VP8_COMMON *const pc = & pbi->common;
|
| +
|
| + for (Q = 0; Q < QINDEX_RANGE; Q++)
|
| + {
|
| + pc->Y1dequant[Q][0] = (short)vp8_dc_quant(Q, pc->y1dc_delta_q);
|
| + pc->Y2dequant[Q][0] = (short)vp8_dc2quant(Q, pc->y2dc_delta_q);
|
| + pc->UVdequant[Q][0] = (short)vp8_dc_uv_quant(Q, pc->uvdc_delta_q);
|
| +
|
| + pc->Y1dequant[Q][1] = (short)vp8_ac_yquant(Q);
|
| + pc->Y2dequant[Q][1] = (short)vp8_ac2quant(Q, pc->y2ac_delta_q);
|
| + pc->UVdequant[Q][1] = (short)vp8_ac_uv_quant(Q, pc->uvac_delta_q);
|
| + }
|
| +}
|
| +
|
| +void vp8_mb_init_dequantizer(VP8D_COMP *pbi, MACROBLOCKD *xd)
|
| +{
|
| + int i;
|
| + int QIndex;
|
| + MB_MODE_INFO *mbmi = &xd->mode_info_context->mbmi;
|
| + VP8_COMMON *const pc = & pbi->common;
|
| +
|
| + /* Decide whether to use the default or alternate baseline Q value. */
|
| + if (xd->segmentation_enabled)
|
| + {
|
| + /* Abs Value */
|
| + if (xd->mb_segement_abs_delta == SEGMENT_ABSDATA)
|
| + QIndex = xd->segment_feature_data[MB_LVL_ALT_Q][mbmi->segment_id];
|
| +
|
| + /* Delta Value */
|
| + else
|
| + {
|
| + QIndex = pc->base_qindex + xd->segment_feature_data[MB_LVL_ALT_Q][mbmi->segment_id];
|
| + QIndex = (QIndex >= 0) ? ((QIndex <= MAXQ) ? QIndex : MAXQ) : 0; /* Clamp to valid range */
|
| + }
|
| + }
|
| + else
|
| + QIndex = pc->base_qindex;
|
| +
|
| + /* Set up the macroblock dequant constants */
|
| + xd->dequant_y1_dc[0] = 1;
|
| + xd->dequant_y1[0] = pc->Y1dequant[QIndex][0];
|
| + xd->dequant_y2[0] = pc->Y2dequant[QIndex][0];
|
| + xd->dequant_uv[0] = pc->UVdequant[QIndex][0];
|
| +
|
| + for (i = 1; i < 16; i++)
|
| + {
|
| + xd->dequant_y1_dc[i] =
|
| + xd->dequant_y1[i] = pc->Y1dequant[QIndex][1];
|
| + xd->dequant_y2[i] = pc->Y2dequant[QIndex][1];
|
| + xd->dequant_uv[i] = pc->UVdequant[QIndex][1];
|
| + }
|
| +}
|
| +
|
| +static void decode_macroblock(VP8D_COMP *pbi, MACROBLOCKD *xd,
|
| + unsigned int mb_idx)
|
| +{
|
| + MB_PREDICTION_MODE mode;
|
| + int i;
|
| +#if CONFIG_ERROR_CONCEALMENT
|
| + int corruption_detected = 0;
|
| +#endif
|
| +
|
| + if (xd->mode_info_context->mbmi.mb_skip_coeff)
|
| + {
|
| + vp8_reset_mb_tokens_context(xd);
|
| + }
|
| + else if (!vp8dx_bool_error(xd->current_bc))
|
| + {
|
| + int eobtotal;
|
| + eobtotal = vp8_decode_mb_tokens(pbi, xd);
|
| +
|
| + /* Special case: Force the loopfilter to skip when eobtotal is zero */
|
| + xd->mode_info_context->mbmi.mb_skip_coeff = (eobtotal==0);
|
| + }
|
| +
|
| + mode = xd->mode_info_context->mbmi.mode;
|
| +
|
| + if (xd->segmentation_enabled)
|
| + vp8_mb_init_dequantizer(pbi, xd);
|
| +
|
| +
|
| +#if CONFIG_ERROR_CONCEALMENT
|
| +
|
| + if(pbi->ec_active)
|
| + {
|
| + int throw_residual;
|
| + /* When we have independent partitions we can apply residual even
|
| + * though other partitions within the frame are corrupt.
|
| + */
|
| + throw_residual = (!pbi->independent_partitions &&
|
| + pbi->frame_corrupt_residual);
|
| + throw_residual = (throw_residual || vp8dx_bool_error(xd->current_bc));
|
| +
|
| + if ((mb_idx >= pbi->mvs_corrupt_from_mb || throw_residual))
|
| + {
|
| + /* MB with corrupt residuals or corrupt mode/motion vectors.
|
| + * Better to use the predictor as reconstruction.
|
| + */
|
| + pbi->frame_corrupt_residual = 1;
|
| + vpx_memset(xd->qcoeff, 0, sizeof(xd->qcoeff));
|
| + vp8_conceal_corrupt_mb(xd);
|
| +
|
| +
|
| + corruption_detected = 1;
|
| +
|
| + /* force idct to be skipped for B_PRED and use the
|
| + * prediction only for reconstruction
|
| + * */
|
| + vpx_memset(xd->eobs, 0, 25);
|
| + }
|
| + }
|
| +#endif
|
| +
|
| + /* do prediction */
|
| + if (xd->mode_info_context->mbmi.ref_frame == INTRA_FRAME)
|
| + {
|
| + vp8_build_intra_predictors_mbuv_s(xd,
|
| + xd->recon_above[1],
|
| + xd->recon_above[2],
|
| + xd->recon_left[1],
|
| + xd->recon_left[2],
|
| + xd->recon_left_stride[1],
|
| + xd->dst.u_buffer, xd->dst.v_buffer,
|
| + xd->dst.uv_stride);
|
| +
|
| + if (mode != B_PRED)
|
| + {
|
| + vp8_build_intra_predictors_mby_s(xd,
|
| + xd->recon_above[0],
|
| + xd->recon_left[0],
|
| + xd->recon_left_stride[0],
|
| + xd->dst.y_buffer,
|
| + xd->dst.y_stride);
|
| + }
|
| + else
|
| + {
|
| + short *DQC = xd->dequant_y1;
|
| + int dst_stride = xd->dst.y_stride;
|
| +
|
| + /* clear out residual eob info */
|
| + if(xd->mode_info_context->mbmi.mb_skip_coeff)
|
| + vpx_memset(xd->eobs, 0, 25);
|
| +
|
| + intra_prediction_down_copy(xd, xd->recon_above[0] + 16);
|
| +
|
| + for (i = 0; i < 16; i++)
|
| + {
|
| + BLOCKD *b = &xd->block[i];
|
| + unsigned char *dst = xd->dst.y_buffer + b->offset;
|
| + B_PREDICTION_MODE b_mode =
|
| + xd->mode_info_context->bmi[i].as_mode;
|
| + unsigned char *Above = dst - dst_stride;
|
| + unsigned char *yleft = dst - 1;
|
| + int left_stride = dst_stride;
|
| + unsigned char top_left = Above[-1];
|
| +
|
| + vp8_intra4x4_predict(Above, yleft, left_stride, b_mode,
|
| + dst, dst_stride, top_left);
|
| +
|
| + if (xd->eobs[i])
|
| + {
|
| + if (xd->eobs[i] > 1)
|
| + {
|
| + vp8_dequant_idct_add(b->qcoeff, DQC, dst, dst_stride);
|
| + }
|
| + else
|
| + {
|
| + vp8_dc_only_idct_add
|
| + (b->qcoeff[0] * DQC[0],
|
| + dst, dst_stride,
|
| + dst, dst_stride);
|
| + vpx_memset(b->qcoeff, 0, 2 * sizeof(b->qcoeff[0]));
|
| + }
|
| + }
|
| + }
|
| + }
|
| + }
|
| + else
|
| + {
|
| + vp8_build_inter_predictors_mb(xd);
|
| + }
|
| +
|
| +
|
| +#if CONFIG_ERROR_CONCEALMENT
|
| + if (corruption_detected)
|
| + {
|
| + return;
|
| + }
|
| +#endif
|
| +
|
| + if(!xd->mode_info_context->mbmi.mb_skip_coeff)
|
| + {
|
| + /* dequantization and idct */
|
| + if (mode != B_PRED)
|
| + {
|
| + short *DQC = xd->dequant_y1;
|
| +
|
| + if (mode != SPLITMV)
|
| + {
|
| + BLOCKD *b = &xd->block[24];
|
| +
|
| + /* do 2nd order transform on the dc block */
|
| + if (xd->eobs[24] > 1)
|
| + {
|
| + vp8_dequantize_b(b, xd->dequant_y2);
|
| +
|
| + vp8_short_inv_walsh4x4(&b->dqcoeff[0],
|
| + xd->qcoeff);
|
| + vpx_memset(b->qcoeff, 0, 16 * sizeof(b->qcoeff[0]));
|
| + }
|
| + else
|
| + {
|
| + b->dqcoeff[0] = b->qcoeff[0] * xd->dequant_y2[0];
|
| + vp8_short_inv_walsh4x4_1(&b->dqcoeff[0],
|
| + xd->qcoeff);
|
| + vpx_memset(b->qcoeff, 0, 2 * sizeof(b->qcoeff[0]));
|
| + }
|
| +
|
| + /* override the dc dequant constant in order to preserve the
|
| + * dc components
|
| + */
|
| + DQC = xd->dequant_y1_dc;
|
| + }
|
| +
|
| + vp8_dequant_idct_add_y_block
|
| + (xd->qcoeff, DQC,
|
| + xd->dst.y_buffer,
|
| + xd->dst.y_stride, xd->eobs);
|
| + }
|
| +
|
| + vp8_dequant_idct_add_uv_block
|
| + (xd->qcoeff+16*16, xd->dequant_uv,
|
| + xd->dst.u_buffer, xd->dst.v_buffer,
|
| + xd->dst.uv_stride, xd->eobs+16);
|
| + }
|
| +}
|
| +
|
| +static int get_delta_q(vp8_reader *bc, int prev, int *q_update)
|
| +{
|
| + int ret_val = 0;
|
| +
|
| + if (vp8_read_bit(bc))
|
| + {
|
| + ret_val = vp8_read_literal(bc, 4);
|
| +
|
| + if (vp8_read_bit(bc))
|
| + ret_val = -ret_val;
|
| + }
|
| +
|
| + /* Trigger a quantizer update if the delta-q value has changed */
|
| + if (ret_val != prev)
|
| + *q_update = 1;
|
| +
|
| + return ret_val;
|
| +}
|
| +
|
| +#ifdef PACKET_TESTING
|
| +#include <stdio.h>
|
| +FILE *vpxlog = 0;
|
| +#endif
|
| +
|
| +static void yv12_extend_frame_top_c(YV12_BUFFER_CONFIG *ybf)
|
| +{
|
| + int i;
|
| + unsigned char *src_ptr1;
|
| + unsigned char *dest_ptr1;
|
| +
|
| + unsigned int Border;
|
| + int plane_stride;
|
| +
|
| + /***********/
|
| + /* Y Plane */
|
| + /***********/
|
| + Border = ybf->border;
|
| + plane_stride = ybf->y_stride;
|
| + src_ptr1 = ybf->y_buffer - Border;
|
| + dest_ptr1 = src_ptr1 - (Border * plane_stride);
|
| +
|
| + for (i = 0; i < (int)Border; i++)
|
| + {
|
| + vpx_memcpy(dest_ptr1, src_ptr1, plane_stride);
|
| + dest_ptr1 += plane_stride;
|
| + }
|
| +
|
| +
|
| + /***********/
|
| + /* U Plane */
|
| + /***********/
|
| + plane_stride = ybf->uv_stride;
|
| + Border /= 2;
|
| + src_ptr1 = ybf->u_buffer - Border;
|
| + dest_ptr1 = src_ptr1 - (Border * plane_stride);
|
| +
|
| + for (i = 0; i < (int)(Border); i++)
|
| + {
|
| + vpx_memcpy(dest_ptr1, src_ptr1, plane_stride);
|
| + dest_ptr1 += plane_stride;
|
| + }
|
| +
|
| + /***********/
|
| + /* V Plane */
|
| + /***********/
|
| +
|
| + src_ptr1 = ybf->v_buffer - Border;
|
| + dest_ptr1 = src_ptr1 - (Border * plane_stride);
|
| +
|
| + for (i = 0; i < (int)(Border); i++)
|
| + {
|
| + vpx_memcpy(dest_ptr1, src_ptr1, plane_stride);
|
| + dest_ptr1 += plane_stride;
|
| + }
|
| +}
|
| +
|
| +static void yv12_extend_frame_bottom_c(YV12_BUFFER_CONFIG *ybf)
|
| +{
|
| + int i;
|
| + unsigned char *src_ptr1, *src_ptr2;
|
| + unsigned char *dest_ptr2;
|
| +
|
| + unsigned int Border;
|
| + int plane_stride;
|
| + int plane_height;
|
| +
|
| + /***********/
|
| + /* Y Plane */
|
| + /***********/
|
| + Border = ybf->border;
|
| + plane_stride = ybf->y_stride;
|
| + plane_height = ybf->y_height;
|
| +
|
| + src_ptr1 = ybf->y_buffer - Border;
|
| + src_ptr2 = src_ptr1 + (plane_height * plane_stride) - plane_stride;
|
| + dest_ptr2 = src_ptr2 + plane_stride;
|
| +
|
| + for (i = 0; i < (int)Border; i++)
|
| + {
|
| + vpx_memcpy(dest_ptr2, src_ptr2, plane_stride);
|
| + dest_ptr2 += plane_stride;
|
| + }
|
| +
|
| +
|
| + /***********/
|
| + /* U Plane */
|
| + /***********/
|
| + plane_stride = ybf->uv_stride;
|
| + plane_height = ybf->uv_height;
|
| + Border /= 2;
|
| +
|
| + src_ptr1 = ybf->u_buffer - Border;
|
| + src_ptr2 = src_ptr1 + (plane_height * plane_stride) - plane_stride;
|
| + dest_ptr2 = src_ptr2 + plane_stride;
|
| +
|
| + for (i = 0; i < (int)(Border); i++)
|
| + {
|
| + vpx_memcpy(dest_ptr2, src_ptr2, plane_stride);
|
| + dest_ptr2 += plane_stride;
|
| + }
|
| +
|
| + /***********/
|
| + /* V Plane */
|
| + /***********/
|
| +
|
| + src_ptr1 = ybf->v_buffer - Border;
|
| + src_ptr2 = src_ptr1 + (plane_height * plane_stride) - plane_stride;
|
| + dest_ptr2 = src_ptr2 + plane_stride;
|
| +
|
| + for (i = 0; i < (int)(Border); i++)
|
| + {
|
| + vpx_memcpy(dest_ptr2, src_ptr2, plane_stride);
|
| + dest_ptr2 += plane_stride;
|
| + }
|
| +}
|
| +
|
| +static void yv12_extend_frame_left_right_c(YV12_BUFFER_CONFIG *ybf,
|
| + unsigned char *y_src,
|
| + unsigned char *u_src,
|
| + unsigned char *v_src)
|
| +{
|
| + int i;
|
| + unsigned char *src_ptr1, *src_ptr2;
|
| + unsigned char *dest_ptr1, *dest_ptr2;
|
| +
|
| + unsigned int Border;
|
| + int plane_stride;
|
| + int plane_height;
|
| + int plane_width;
|
| +
|
| + /***********/
|
| + /* Y Plane */
|
| + /***********/
|
| + Border = ybf->border;
|
| + plane_stride = ybf->y_stride;
|
| + plane_height = 16;
|
| + plane_width = ybf->y_width;
|
| +
|
| + /* copy the left and right most columns out */
|
| + src_ptr1 = y_src;
|
| + src_ptr2 = src_ptr1 + plane_width - 1;
|
| + dest_ptr1 = src_ptr1 - Border;
|
| + dest_ptr2 = src_ptr2 + 1;
|
| +
|
| + for (i = 0; i < plane_height; i++)
|
| + {
|
| + vpx_memset(dest_ptr1, src_ptr1[0], Border);
|
| + vpx_memset(dest_ptr2, src_ptr2[0], Border);
|
| + src_ptr1 += plane_stride;
|
| + src_ptr2 += plane_stride;
|
| + dest_ptr1 += plane_stride;
|
| + dest_ptr2 += plane_stride;
|
| + }
|
| +
|
| + /***********/
|
| + /* U Plane */
|
| + /***********/
|
| + plane_stride = ybf->uv_stride;
|
| + plane_height = 8;
|
| + plane_width = ybf->uv_width;
|
| + Border /= 2;
|
| +
|
| + /* copy the left and right most columns out */
|
| + src_ptr1 = u_src;
|
| + src_ptr2 = src_ptr1 + plane_width - 1;
|
| + dest_ptr1 = src_ptr1 - Border;
|
| + dest_ptr2 = src_ptr2 + 1;
|
| +
|
| + for (i = 0; i < plane_height; i++)
|
| + {
|
| + vpx_memset(dest_ptr1, src_ptr1[0], Border);
|
| + vpx_memset(dest_ptr2, src_ptr2[0], Border);
|
| + src_ptr1 += plane_stride;
|
| + src_ptr2 += plane_stride;
|
| + dest_ptr1 += plane_stride;
|
| + dest_ptr2 += plane_stride;
|
| + }
|
| +
|
| + /***********/
|
| + /* V Plane */
|
| + /***********/
|
| +
|
| + /* copy the left and right most columns out */
|
| + src_ptr1 = v_src;
|
| + src_ptr2 = src_ptr1 + plane_width - 1;
|
| + dest_ptr1 = src_ptr1 - Border;
|
| + dest_ptr2 = src_ptr2 + 1;
|
| +
|
| + for (i = 0; i < plane_height; i++)
|
| + {
|
| + vpx_memset(dest_ptr1, src_ptr1[0], Border);
|
| + vpx_memset(dest_ptr2, src_ptr2[0], Border);
|
| + src_ptr1 += plane_stride;
|
| + src_ptr2 += plane_stride;
|
| + dest_ptr1 += plane_stride;
|
| + dest_ptr2 += plane_stride;
|
| + }
|
| +}
|
| +
|
| +static void decode_mb_rows(VP8D_COMP *pbi)
|
| +{
|
| + VP8_COMMON *const pc = & pbi->common;
|
| + MACROBLOCKD *const xd = & pbi->mb;
|
| +
|
| + MODE_INFO *lf_mic = xd->mode_info_context;
|
| +
|
| + int ibc = 0;
|
| + int num_part = 1 << pc->multi_token_partition;
|
| +
|
| + int recon_yoffset, recon_uvoffset;
|
| + int mb_row, mb_col;
|
| + int mb_idx = 0;
|
| +
|
| + YV12_BUFFER_CONFIG *yv12_fb_new = pbi->dec_fb_ref[INTRA_FRAME];
|
| +
|
| + int recon_y_stride = yv12_fb_new->y_stride;
|
| + int recon_uv_stride = yv12_fb_new->uv_stride;
|
| +
|
| + unsigned char *ref_buffer[MAX_REF_FRAMES][3];
|
| + unsigned char *dst_buffer[3];
|
| + unsigned char *lf_dst[3];
|
| + unsigned char *eb_dst[3];
|
| + int i;
|
| + int ref_fb_corrupted[MAX_REF_FRAMES];
|
| +
|
| + ref_fb_corrupted[INTRA_FRAME] = 0;
|
| +
|
| + for(i = 1; i < MAX_REF_FRAMES; i++)
|
| + {
|
| + YV12_BUFFER_CONFIG *this_fb = pbi->dec_fb_ref[i];
|
| +
|
| + ref_buffer[i][0] = this_fb->y_buffer;
|
| + ref_buffer[i][1] = this_fb->u_buffer;
|
| + ref_buffer[i][2] = this_fb->v_buffer;
|
| +
|
| + ref_fb_corrupted[i] = this_fb->corrupted;
|
| + }
|
| +
|
| + /* Set up the buffer pointers */
|
| + eb_dst[0] = lf_dst[0] = dst_buffer[0] = yv12_fb_new->y_buffer;
|
| + eb_dst[1] = lf_dst[1] = dst_buffer[1] = yv12_fb_new->u_buffer;
|
| + eb_dst[2] = lf_dst[2] = dst_buffer[2] = yv12_fb_new->v_buffer;
|
| +
|
| + xd->up_available = 0;
|
| +
|
| + /* Initialize the loop filter for this frame. */
|
| + if(pc->filter_level)
|
| + vp8_loop_filter_frame_init(pc, xd, pc->filter_level);
|
| +
|
| + vp8_setup_intra_recon_top_line(yv12_fb_new);
|
| +
|
| + /* Decode the individual macro block */
|
| + for (mb_row = 0; mb_row < pc->mb_rows; mb_row++)
|
| + {
|
| + if (num_part > 1)
|
| + {
|
| + xd->current_bc = & pbi->mbc[ibc];
|
| + ibc++;
|
| +
|
| + if (ibc == num_part)
|
| + ibc = 0;
|
| + }
|
| +
|
| + recon_yoffset = mb_row * recon_y_stride * 16;
|
| + recon_uvoffset = mb_row * recon_uv_stride * 8;
|
| +
|
| + /* reset contexts */
|
| + xd->above_context = pc->above_context;
|
| + vpx_memset(xd->left_context, 0, sizeof(ENTROPY_CONTEXT_PLANES));
|
| +
|
| + xd->left_available = 0;
|
| +
|
| + xd->mb_to_top_edge = -((mb_row * 16) << 3);
|
| + xd->mb_to_bottom_edge = ((pc->mb_rows - 1 - mb_row) * 16) << 3;
|
| +
|
| + xd->recon_above[0] = dst_buffer[0] + recon_yoffset;
|
| + xd->recon_above[1] = dst_buffer[1] + recon_uvoffset;
|
| + xd->recon_above[2] = dst_buffer[2] + recon_uvoffset;
|
| +
|
| + xd->recon_left[0] = xd->recon_above[0] - 1;
|
| + xd->recon_left[1] = xd->recon_above[1] - 1;
|
| + xd->recon_left[2] = xd->recon_above[2] - 1;
|
| +
|
| + xd->recon_above[0] -= xd->dst.y_stride;
|
| + xd->recon_above[1] -= xd->dst.uv_stride;
|
| + xd->recon_above[2] -= xd->dst.uv_stride;
|
| +
|
| + /* TODO: move to outside row loop */
|
| + xd->recon_left_stride[0] = xd->dst.y_stride;
|
| + xd->recon_left_stride[1] = xd->dst.uv_stride;
|
| +
|
| + setup_intra_recon_left(xd->recon_left[0], xd->recon_left[1],
|
| + xd->recon_left[2], xd->dst.y_stride,
|
| + xd->dst.uv_stride);
|
| +
|
| + for (mb_col = 0; mb_col < pc->mb_cols; mb_col++)
|
| + {
|
| + /* Distance of Mb to the various image edges.
|
| + * These are specified to 8th pel as they are always compared to values
|
| + * that are in 1/8th pel units
|
| + */
|
| + xd->mb_to_left_edge = -((mb_col * 16) << 3);
|
| + xd->mb_to_right_edge = ((pc->mb_cols - 1 - mb_col) * 16) << 3;
|
| +
|
| +#if CONFIG_ERROR_CONCEALMENT
|
| + {
|
| + int corrupt_residual = (!pbi->independent_partitions &&
|
| + pbi->frame_corrupt_residual) ||
|
| + vp8dx_bool_error(xd->current_bc);
|
| + if (pbi->ec_active &&
|
| + xd->mode_info_context->mbmi.ref_frame == INTRA_FRAME &&
|
| + corrupt_residual)
|
| + {
|
| + /* We have an intra block with corrupt coefficients, better to
|
| + * conceal with an inter block. Interpolate MVs from neighboring
|
| + * MBs.
|
| + *
|
| + * Note that for the first mb with corrupt residual in a frame,
|
| + * we might not discover that before decoding the residual. That
|
| + * happens after this check, and therefore no inter concealment
|
| + * will be done.
|
| + */
|
| + vp8_interpolate_motion(xd,
|
| + mb_row, mb_col,
|
| + pc->mb_rows, pc->mb_cols,
|
| + pc->mode_info_stride);
|
| + }
|
| + }
|
| +#endif
|
| +
|
| + xd->dst.y_buffer = dst_buffer[0] + recon_yoffset;
|
| + xd->dst.u_buffer = dst_buffer[1] + recon_uvoffset;
|
| + xd->dst.v_buffer = dst_buffer[2] + recon_uvoffset;
|
| +
|
| + xd->pre.y_buffer = ref_buffer[xd->mode_info_context->mbmi.ref_frame][0] + recon_yoffset;
|
| + xd->pre.u_buffer = ref_buffer[xd->mode_info_context->mbmi.ref_frame][1] + recon_uvoffset;
|
| + xd->pre.v_buffer = ref_buffer[xd->mode_info_context->mbmi.ref_frame][2] + recon_uvoffset;
|
| +
|
| + /* propagate errors from reference frames */
|
| + xd->corrupted |= ref_fb_corrupted[xd->mode_info_context->mbmi.ref_frame];
|
| +
|
| + decode_macroblock(pbi, xd, mb_idx);
|
| +
|
| + mb_idx++;
|
| + xd->left_available = 1;
|
| +
|
| + /* check if the boolean decoder has suffered an error */
|
| + xd->corrupted |= vp8dx_bool_error(xd->current_bc);
|
| +
|
| + xd->recon_above[0] += 16;
|
| + xd->recon_above[1] += 8;
|
| + xd->recon_above[2] += 8;
|
| + xd->recon_left[0] += 16;
|
| + xd->recon_left[1] += 8;
|
| + xd->recon_left[2] += 8;
|
| +
|
| + recon_yoffset += 16;
|
| + recon_uvoffset += 8;
|
| +
|
| + ++xd->mode_info_context; /* next mb */
|
| +
|
| + xd->above_context++;
|
| + }
|
| +
|
| + /* adjust to the next row of mbs */
|
| + vp8_extend_mb_row(yv12_fb_new, xd->dst.y_buffer + 16,
|
| + xd->dst.u_buffer + 8, xd->dst.v_buffer + 8);
|
| +
|
| + ++xd->mode_info_context; /* skip prediction column */
|
| + xd->up_available = 1;
|
| +
|
| + if(pc->filter_level)
|
| + {
|
| + if(mb_row > 0)
|
| + {
|
| + if (pc->filter_type == NORMAL_LOOPFILTER)
|
| + vp8_loop_filter_row_normal(pc, lf_mic, mb_row-1,
|
| + recon_y_stride, recon_uv_stride,
|
| + lf_dst[0], lf_dst[1], lf_dst[2]);
|
| + else
|
| + vp8_loop_filter_row_simple(pc, lf_mic, mb_row-1,
|
| + recon_y_stride, recon_uv_stride,
|
| + lf_dst[0], lf_dst[1], lf_dst[2]);
|
| + if(mb_row > 1)
|
| + {
|
| + yv12_extend_frame_left_right_c(yv12_fb_new,
|
| + eb_dst[0],
|
| + eb_dst[1],
|
| + eb_dst[2]);
|
| +
|
| + eb_dst[0] += recon_y_stride * 16;
|
| + eb_dst[1] += recon_uv_stride * 8;
|
| + eb_dst[2] += recon_uv_stride * 8;
|
| + }
|
| +
|
| + lf_dst[0] += recon_y_stride * 16;
|
| + lf_dst[1] += recon_uv_stride * 8;
|
| + lf_dst[2] += recon_uv_stride * 8;
|
| + lf_mic += pc->mb_cols;
|
| + lf_mic++; /* Skip border mb */
|
| + }
|
| + }
|
| + else
|
| + {
|
| + if(mb_row > 0)
|
| + {
|
| + /**/
|
| + yv12_extend_frame_left_right_c(yv12_fb_new,
|
| + eb_dst[0],
|
| + eb_dst[1],
|
| + eb_dst[2]);
|
| + eb_dst[0] += recon_y_stride * 16;
|
| + eb_dst[1] += recon_uv_stride * 8;
|
| + eb_dst[2] += recon_uv_stride * 8;
|
| + }
|
| + }
|
| + }
|
| +
|
| + if(pc->filter_level)
|
| + {
|
| + if (pc->filter_type == NORMAL_LOOPFILTER)
|
| + vp8_loop_filter_row_normal(pc, lf_mic, mb_row-1, recon_y_stride,
|
| + recon_uv_stride, lf_dst[0], lf_dst[1],
|
| + lf_dst[2]);
|
| + else
|
| + vp8_loop_filter_row_simple(pc, lf_mic, mb_row-1, recon_y_stride,
|
| + recon_uv_stride, lf_dst[0], lf_dst[1],
|
| + lf_dst[2]);
|
| +
|
| + yv12_extend_frame_left_right_c(yv12_fb_new,
|
| + eb_dst[0],
|
| + eb_dst[1],
|
| + eb_dst[2]);
|
| + eb_dst[0] += recon_y_stride * 16;
|
| + eb_dst[1] += recon_uv_stride * 8;
|
| + eb_dst[2] += recon_uv_stride * 8;
|
| + }
|
| + yv12_extend_frame_left_right_c(yv12_fb_new,
|
| + eb_dst[0],
|
| + eb_dst[1],
|
| + eb_dst[2]);
|
| + yv12_extend_frame_top_c(yv12_fb_new);
|
| + yv12_extend_frame_bottom_c(yv12_fb_new);
|
| +
|
| +}
|
| +
|
| +static unsigned int read_partition_size(VP8D_COMP *pbi,
|
| + const unsigned char *cx_size)
|
| +{
|
| + unsigned char temp[3];
|
| + if (pbi->decrypt_cb)
|
| + {
|
| + pbi->decrypt_cb(pbi->decrypt_state, cx_size, temp, 3);
|
| + cx_size = temp;
|
| + }
|
| + return cx_size[0] + (cx_size[1] << 8) + (cx_size[2] << 16);
|
| +}
|
| +
|
| +static int read_is_valid(const unsigned char *start,
|
| + size_t len,
|
| + const unsigned char *end)
|
| +{
|
| + return (start + len > start && start + len <= end);
|
| +}
|
| +
|
| +static unsigned int read_available_partition_size(
|
| + VP8D_COMP *pbi,
|
| + const unsigned char *token_part_sizes,
|
| + const unsigned char *fragment_start,
|
| + const unsigned char *first_fragment_end,
|
| + const unsigned char *fragment_end,
|
| + int i,
|
| + int num_part)
|
| +{
|
| + VP8_COMMON* pc = &pbi->common;
|
| + const unsigned char *partition_size_ptr = token_part_sizes + i * 3;
|
| + unsigned int partition_size = 0;
|
| + ptrdiff_t bytes_left = fragment_end - fragment_start;
|
| + /* Calculate the length of this partition. The last partition
|
| + * size is implicit. If the partition size can't be read, then
|
| + * either use the remaining data in the buffer (for EC mode)
|
| + * or throw an error.
|
| + */
|
| + if (i < num_part - 1)
|
| + {
|
| + if (read_is_valid(partition_size_ptr, 3, first_fragment_end))
|
| + partition_size = read_partition_size(pbi, partition_size_ptr);
|
| + else if (pbi->ec_active)
|
| + partition_size = (unsigned int)bytes_left;
|
| + else
|
| + vpx_internal_error(&pc->error, VPX_CODEC_CORRUPT_FRAME,
|
| + "Truncated partition size data");
|
| + }
|
| + else
|
| + partition_size = (unsigned int)bytes_left;
|
| +
|
| + /* Validate the calculated partition length. If the buffer
|
| + * described by the partition can't be fully read, then restrict
|
| + * it to the portion that can be (for EC mode) or throw an error.
|
| + */
|
| + if (!read_is_valid(fragment_start, partition_size, fragment_end))
|
| + {
|
| + if (pbi->ec_active)
|
| + partition_size = (unsigned int)bytes_left;
|
| + else
|
| + vpx_internal_error(&pc->error, VPX_CODEC_CORRUPT_FRAME,
|
| + "Truncated packet or corrupt partition "
|
| + "%d length", i + 1);
|
| + }
|
| + return partition_size;
|
| +}
|
| +
|
| +
|
| +static void setup_token_decoder(VP8D_COMP *pbi,
|
| + const unsigned char* token_part_sizes)
|
| +{
|
| + vp8_reader *bool_decoder = &pbi->mbc[0];
|
| + unsigned int partition_idx;
|
| + unsigned int fragment_idx;
|
| + unsigned int num_token_partitions;
|
| + const unsigned char *first_fragment_end = pbi->fragments.ptrs[0] +
|
| + pbi->fragments.sizes[0];
|
| +
|
| + TOKEN_PARTITION multi_token_partition =
|
| + (TOKEN_PARTITION)vp8_read_literal(&pbi->mbc[8], 2);
|
| + if (!vp8dx_bool_error(&pbi->mbc[8]))
|
| + pbi->common.multi_token_partition = multi_token_partition;
|
| + num_token_partitions = 1 << pbi->common.multi_token_partition;
|
| +
|
| + /* Check for partitions within the fragments and unpack the fragments
|
| + * so that each fragment pointer points to its corresponding partition. */
|
| + for (fragment_idx = 0; fragment_idx < pbi->fragments.count; ++fragment_idx)
|
| + {
|
| + unsigned int fragment_size = pbi->fragments.sizes[fragment_idx];
|
| + const unsigned char *fragment_end = pbi->fragments.ptrs[fragment_idx] +
|
| + fragment_size;
|
| + /* Special case for handling the first partition since we have already
|
| + * read its size. */
|
| + if (fragment_idx == 0)
|
| + {
|
| + /* Size of first partition + token partition sizes element */
|
| + ptrdiff_t ext_first_part_size = token_part_sizes -
|
| + pbi->fragments.ptrs[0] + 3 * (num_token_partitions - 1);
|
| + fragment_size -= (unsigned int)ext_first_part_size;
|
| + if (fragment_size > 0)
|
| + {
|
| + pbi->fragments.sizes[0] = (unsigned int)ext_first_part_size;
|
| + /* The fragment contains an additional partition. Move to
|
| + * next. */
|
| + fragment_idx++;
|
| + pbi->fragments.ptrs[fragment_idx] = pbi->fragments.ptrs[0] +
|
| + pbi->fragments.sizes[0];
|
| + }
|
| + }
|
| + /* Split the chunk into partitions read from the bitstream */
|
| + while (fragment_size > 0)
|
| + {
|
| + ptrdiff_t partition_size = read_available_partition_size(
|
| + pbi,
|
| + token_part_sizes,
|
| + pbi->fragments.ptrs[fragment_idx],
|
| + first_fragment_end,
|
| + fragment_end,
|
| + fragment_idx - 1,
|
| + num_token_partitions);
|
| + pbi->fragments.sizes[fragment_idx] = (unsigned int)partition_size;
|
| + fragment_size -= (unsigned int)partition_size;
|
| + assert(fragment_idx <= num_token_partitions);
|
| + if (fragment_size > 0)
|
| + {
|
| + /* The fragment contains an additional partition.
|
| + * Move to next. */
|
| + fragment_idx++;
|
| + pbi->fragments.ptrs[fragment_idx] =
|
| + pbi->fragments.ptrs[fragment_idx - 1] + partition_size;
|
| + }
|
| + }
|
| + }
|
| +
|
| + pbi->fragments.count = num_token_partitions + 1;
|
| +
|
| + for (partition_idx = 1; partition_idx < pbi->fragments.count; ++partition_idx)
|
| + {
|
| + if (vp8dx_start_decode(bool_decoder,
|
| + pbi->fragments.ptrs[partition_idx],
|
| + pbi->fragments.sizes[partition_idx],
|
| + pbi->decrypt_cb, pbi->decrypt_state))
|
| + vpx_internal_error(&pbi->common.error, VPX_CODEC_MEM_ERROR,
|
| + "Failed to allocate bool decoder %d",
|
| + partition_idx);
|
| +
|
| + bool_decoder++;
|
| + }
|
| +
|
| +#if CONFIG_MULTITHREAD
|
| + /* Clamp number of decoder threads */
|
| + if (pbi->decoding_thread_count > num_token_partitions - 1)
|
| + pbi->decoding_thread_count = num_token_partitions - 1;
|
| +#endif
|
| +}
|
| +
|
| +
|
| +static void init_frame(VP8D_COMP *pbi)
|
| +{
|
| + VP8_COMMON *const pc = & pbi->common;
|
| + MACROBLOCKD *const xd = & pbi->mb;
|
| +
|
| + if (pc->frame_type == KEY_FRAME)
|
| + {
|
| + /* Various keyframe initializations */
|
| + vpx_memcpy(pc->fc.mvc, vp8_default_mv_context, sizeof(vp8_default_mv_context));
|
| +
|
| + vp8_init_mbmode_probs(pc);
|
| +
|
| + vp8_default_coef_probs(pc);
|
| +
|
| + /* reset the segment feature data to 0 with delta coding (Default state). */
|
| + vpx_memset(xd->segment_feature_data, 0, sizeof(xd->segment_feature_data));
|
| + xd->mb_segement_abs_delta = SEGMENT_DELTADATA;
|
| +
|
| + /* reset the mode ref deltasa for loop filter */
|
| + vpx_memset(xd->ref_lf_deltas, 0, sizeof(xd->ref_lf_deltas));
|
| + vpx_memset(xd->mode_lf_deltas, 0, sizeof(xd->mode_lf_deltas));
|
| +
|
| + /* All buffers are implicitly updated on key frames. */
|
| + pc->refresh_golden_frame = 1;
|
| + pc->refresh_alt_ref_frame = 1;
|
| + pc->copy_buffer_to_gf = 0;
|
| + pc->copy_buffer_to_arf = 0;
|
| +
|
| + /* Note that Golden and Altref modes cannot be used on a key frame so
|
| + * ref_frame_sign_bias[] is undefined and meaningless
|
| + */
|
| + pc->ref_frame_sign_bias[GOLDEN_FRAME] = 0;
|
| + pc->ref_frame_sign_bias[ALTREF_FRAME] = 0;
|
| + }
|
| + else
|
| + {
|
| + /* To enable choice of different interploation filters */
|
| + if (!pc->use_bilinear_mc_filter)
|
| + {
|
| + xd->subpixel_predict = vp8_sixtap_predict4x4;
|
| + xd->subpixel_predict8x4 = vp8_sixtap_predict8x4;
|
| + xd->subpixel_predict8x8 = vp8_sixtap_predict8x8;
|
| + xd->subpixel_predict16x16 = vp8_sixtap_predict16x16;
|
| + }
|
| + else
|
| + {
|
| + xd->subpixel_predict = vp8_bilinear_predict4x4;
|
| + xd->subpixel_predict8x4 = vp8_bilinear_predict8x4;
|
| + xd->subpixel_predict8x8 = vp8_bilinear_predict8x8;
|
| + xd->subpixel_predict16x16 = vp8_bilinear_predict16x16;
|
| + }
|
| +
|
| + if (pbi->decoded_key_frame && pbi->ec_enabled && !pbi->ec_active)
|
| + pbi->ec_active = 1;
|
| + }
|
| +
|
| + xd->left_context = &pc->left_context;
|
| + xd->mode_info_context = pc->mi;
|
| + xd->frame_type = pc->frame_type;
|
| + xd->mode_info_context->mbmi.mode = DC_PRED;
|
| + xd->mode_info_stride = pc->mode_info_stride;
|
| + xd->corrupted = 0; /* init without corruption */
|
| +
|
| + xd->fullpixel_mask = 0xffffffff;
|
| + if(pc->full_pixel)
|
| + xd->fullpixel_mask = 0xfffffff8;
|
| +
|
| +}
|
| +
|
| +int vp8_decode_frame(VP8D_COMP *pbi)
|
| +{
|
| + vp8_reader *const bc = &pbi->mbc[8];
|
| + VP8_COMMON *const pc = &pbi->common;
|
| + MACROBLOCKD *const xd = &pbi->mb;
|
| + const unsigned char *data = pbi->fragments.ptrs[0];
|
| + const unsigned char *data_end = data + pbi->fragments.sizes[0];
|
| + ptrdiff_t first_partition_length_in_bytes;
|
| +
|
| + int i, j, k, l;
|
| + const int *const mb_feature_data_bits = vp8_mb_feature_data_bits;
|
| + int corrupt_tokens = 0;
|
| + int prev_independent_partitions = pbi->independent_partitions;
|
| +
|
| + YV12_BUFFER_CONFIG *yv12_fb_new = pbi->dec_fb_ref[INTRA_FRAME];
|
| +
|
| + /* start with no corruption of current frame */
|
| + xd->corrupted = 0;
|
| + yv12_fb_new->corrupted = 0;
|
| +
|
| + if (data_end - data < 3)
|
| + {
|
| + if (!pbi->ec_active)
|
| + {
|
| + vpx_internal_error(&pc->error, VPX_CODEC_CORRUPT_FRAME,
|
| + "Truncated packet");
|
| + }
|
| +
|
| + /* Declare the missing frame as an inter frame since it will
|
| + be handled as an inter frame when we have estimated its
|
| + motion vectors. */
|
| + pc->frame_type = INTER_FRAME;
|
| + pc->version = 0;
|
| + pc->show_frame = 1;
|
| + first_partition_length_in_bytes = 0;
|
| + }
|
| + else
|
| + {
|
| + unsigned char clear_buffer[10];
|
| + const unsigned char *clear = data;
|
| + if (pbi->decrypt_cb)
|
| + {
|
| + int n = (int)(data_end - data);
|
| + if (n > 10) n = 10;
|
| + pbi->decrypt_cb(pbi->decrypt_state, data, clear_buffer, n);
|
| + clear = clear_buffer;
|
| + }
|
| +
|
| + pc->frame_type = (FRAME_TYPE)(clear[0] & 1);
|
| + pc->version = (clear[0] >> 1) & 7;
|
| + pc->show_frame = (clear[0] >> 4) & 1;
|
| + first_partition_length_in_bytes =
|
| + (clear[0] | (clear[1] << 8) | (clear[2] << 16)) >> 5;
|
| +
|
| + if (!pbi->ec_active &&
|
| + (data + first_partition_length_in_bytes > data_end
|
| + || data + first_partition_length_in_bytes < data))
|
| + vpx_internal_error(&pc->error, VPX_CODEC_CORRUPT_FRAME,
|
| + "Truncated packet or corrupt partition 0 length");
|
| +
|
| + data += 3;
|
| + clear += 3;
|
| +
|
| + vp8_setup_version(pc);
|
| +
|
| +
|
| + if (pc->frame_type == KEY_FRAME)
|
| + {
|
| + /* vet via sync code */
|
| + /* When error concealment is enabled we should only check the sync
|
| + * code if we have enough bits available
|
| + */
|
| + if (!pbi->ec_active || data + 3 < data_end)
|
| + {
|
| + if (clear[0] != 0x9d || clear[1] != 0x01 || clear[2] != 0x2a)
|
| + vpx_internal_error(&pc->error, VPX_CODEC_UNSUP_BITSTREAM,
|
| + "Invalid frame sync code");
|
| + }
|
| +
|
| + /* If error concealment is enabled we should only parse the new size
|
| + * if we have enough data. Otherwise we will end up with the wrong
|
| + * size.
|
| + */
|
| + if (!pbi->ec_active || data + 6 < data_end)
|
| + {
|
| + pc->Width = (clear[3] | (clear[4] << 8)) & 0x3fff;
|
| + pc->horiz_scale = clear[4] >> 6;
|
| + pc->Height = (clear[5] | (clear[6] << 8)) & 0x3fff;
|
| + pc->vert_scale = clear[6] >> 6;
|
| + }
|
| + data += 7;
|
| + clear += 7;
|
| + }
|
| + else
|
| + {
|
| + vpx_memcpy(&xd->pre, yv12_fb_new, sizeof(YV12_BUFFER_CONFIG));
|
| + vpx_memcpy(&xd->dst, yv12_fb_new, sizeof(YV12_BUFFER_CONFIG));
|
| + }
|
| + }
|
| + if ((!pbi->decoded_key_frame && pc->frame_type != KEY_FRAME))
|
| + {
|
| + return -1;
|
| + }
|
| +
|
| + init_frame(pbi);
|
| +
|
| + if (vp8dx_start_decode(bc, data, (unsigned int)(data_end - data),
|
| + pbi->decrypt_cb, pbi->decrypt_state))
|
| + vpx_internal_error(&pc->error, VPX_CODEC_MEM_ERROR,
|
| + "Failed to allocate bool decoder 0");
|
| + if (pc->frame_type == KEY_FRAME) {
|
| + (void)vp8_read_bit(bc); // colorspace
|
| + pc->clamp_type = (CLAMP_TYPE)vp8_read_bit(bc);
|
| + }
|
| +
|
| + /* Is segmentation enabled */
|
| + xd->segmentation_enabled = (unsigned char)vp8_read_bit(bc);
|
| +
|
| + if (xd->segmentation_enabled)
|
| + {
|
| + /* Signal whether or not the segmentation map is being explicitly updated this frame. */
|
| + xd->update_mb_segmentation_map = (unsigned char)vp8_read_bit(bc);
|
| + xd->update_mb_segmentation_data = (unsigned char)vp8_read_bit(bc);
|
| +
|
| + if (xd->update_mb_segmentation_data)
|
| + {
|
| + xd->mb_segement_abs_delta = (unsigned char)vp8_read_bit(bc);
|
| +
|
| + vpx_memset(xd->segment_feature_data, 0, sizeof(xd->segment_feature_data));
|
| +
|
| + /* For each segmentation feature (Quant and loop filter level) */
|
| + for (i = 0; i < MB_LVL_MAX; i++)
|
| + {
|
| + for (j = 0; j < MAX_MB_SEGMENTS; j++)
|
| + {
|
| + /* Frame level data */
|
| + if (vp8_read_bit(bc))
|
| + {
|
| + xd->segment_feature_data[i][j] = (signed char)vp8_read_literal(bc, mb_feature_data_bits[i]);
|
| +
|
| + if (vp8_read_bit(bc))
|
| + xd->segment_feature_data[i][j] = -xd->segment_feature_data[i][j];
|
| + }
|
| + else
|
| + xd->segment_feature_data[i][j] = 0;
|
| + }
|
| + }
|
| + }
|
| +
|
| + if (xd->update_mb_segmentation_map)
|
| + {
|
| + /* Which macro block level features are enabled */
|
| + vpx_memset(xd->mb_segment_tree_probs, 255, sizeof(xd->mb_segment_tree_probs));
|
| +
|
| + /* Read the probs used to decode the segment id for each macro block. */
|
| + for (i = 0; i < MB_FEATURE_TREE_PROBS; i++)
|
| + {
|
| + /* If not explicitly set value is defaulted to 255 by memset above */
|
| + if (vp8_read_bit(bc))
|
| + xd->mb_segment_tree_probs[i] = (vp8_prob)vp8_read_literal(bc, 8);
|
| + }
|
| + }
|
| + }
|
| + else
|
| + {
|
| + /* No segmentation updates on this frame */
|
| + xd->update_mb_segmentation_map = 0;
|
| + xd->update_mb_segmentation_data = 0;
|
| + }
|
| +
|
| + /* Read the loop filter level and type */
|
| + pc->filter_type = (LOOPFILTERTYPE) vp8_read_bit(bc);
|
| + pc->filter_level = vp8_read_literal(bc, 6);
|
| + pc->sharpness_level = vp8_read_literal(bc, 3);
|
| +
|
| + /* Read in loop filter deltas applied at the MB level based on mode or ref frame. */
|
| + xd->mode_ref_lf_delta_update = 0;
|
| + xd->mode_ref_lf_delta_enabled = (unsigned char)vp8_read_bit(bc);
|
| +
|
| + if (xd->mode_ref_lf_delta_enabled)
|
| + {
|
| + /* Do the deltas need to be updated */
|
| + xd->mode_ref_lf_delta_update = (unsigned char)vp8_read_bit(bc);
|
| +
|
| + if (xd->mode_ref_lf_delta_update)
|
| + {
|
| + /* Send update */
|
| + for (i = 0; i < MAX_REF_LF_DELTAS; i++)
|
| + {
|
| + if (vp8_read_bit(bc))
|
| + {
|
| + /*sign = vp8_read_bit( bc );*/
|
| + xd->ref_lf_deltas[i] = (signed char)vp8_read_literal(bc, 6);
|
| +
|
| + if (vp8_read_bit(bc)) /* Apply sign */
|
| + xd->ref_lf_deltas[i] = xd->ref_lf_deltas[i] * -1;
|
| + }
|
| + }
|
| +
|
| + /* Send update */
|
| + for (i = 0; i < MAX_MODE_LF_DELTAS; i++)
|
| + {
|
| + if (vp8_read_bit(bc))
|
| + {
|
| + /*sign = vp8_read_bit( bc );*/
|
| + xd->mode_lf_deltas[i] = (signed char)vp8_read_literal(bc, 6);
|
| +
|
| + if (vp8_read_bit(bc)) /* Apply sign */
|
| + xd->mode_lf_deltas[i] = xd->mode_lf_deltas[i] * -1;
|
| + }
|
| + }
|
| + }
|
| + }
|
| +
|
| + setup_token_decoder(pbi, data + first_partition_length_in_bytes);
|
| +
|
| + xd->current_bc = &pbi->mbc[0];
|
| +
|
| + /* Read the default quantizers. */
|
| + {
|
| + int Q, q_update;
|
| +
|
| + Q = vp8_read_literal(bc, 7); /* AC 1st order Q = default */
|
| + pc->base_qindex = Q;
|
| + q_update = 0;
|
| + pc->y1dc_delta_q = get_delta_q(bc, pc->y1dc_delta_q, &q_update);
|
| + pc->y2dc_delta_q = get_delta_q(bc, pc->y2dc_delta_q, &q_update);
|
| + pc->y2ac_delta_q = get_delta_q(bc, pc->y2ac_delta_q, &q_update);
|
| + pc->uvdc_delta_q = get_delta_q(bc, pc->uvdc_delta_q, &q_update);
|
| + pc->uvac_delta_q = get_delta_q(bc, pc->uvac_delta_q, &q_update);
|
| +
|
| + if (q_update)
|
| + vp8cx_init_de_quantizer(pbi);
|
| +
|
| + /* MB level dequantizer setup */
|
| + vp8_mb_init_dequantizer(pbi, &pbi->mb);
|
| + }
|
| +
|
| + /* Determine if the golden frame or ARF buffer should be updated and how.
|
| + * For all non key frames the GF and ARF refresh flags and sign bias
|
| + * flags must be set explicitly.
|
| + */
|
| + if (pc->frame_type != KEY_FRAME)
|
| + {
|
| + /* Should the GF or ARF be updated from the current frame */
|
| + pc->refresh_golden_frame = vp8_read_bit(bc);
|
| +#if CONFIG_ERROR_CONCEALMENT
|
| + /* Assume we shouldn't refresh golden if the bit is missing */
|
| + xd->corrupted |= vp8dx_bool_error(bc);
|
| + if (pbi->ec_active && xd->corrupted)
|
| + pc->refresh_golden_frame = 0;
|
| +#endif
|
| +
|
| + pc->refresh_alt_ref_frame = vp8_read_bit(bc);
|
| +#if CONFIG_ERROR_CONCEALMENT
|
| + /* Assume we shouldn't refresh altref if the bit is missing */
|
| + xd->corrupted |= vp8dx_bool_error(bc);
|
| + if (pbi->ec_active && xd->corrupted)
|
| + pc->refresh_alt_ref_frame = 0;
|
| +#endif
|
| +
|
| + /* Buffer to buffer copy flags. */
|
| + pc->copy_buffer_to_gf = 0;
|
| +
|
| + if (!pc->refresh_golden_frame)
|
| + pc->copy_buffer_to_gf = vp8_read_literal(bc, 2);
|
| +
|
| +#if CONFIG_ERROR_CONCEALMENT
|
| + /* Assume we shouldn't copy to the golden if the bit is missing */
|
| + xd->corrupted |= vp8dx_bool_error(bc);
|
| + if (pbi->ec_active && xd->corrupted)
|
| + pc->copy_buffer_to_gf = 0;
|
| +#endif
|
| +
|
| + pc->copy_buffer_to_arf = 0;
|
| +
|
| + if (!pc->refresh_alt_ref_frame)
|
| + pc->copy_buffer_to_arf = vp8_read_literal(bc, 2);
|
| +
|
| +#if CONFIG_ERROR_CONCEALMENT
|
| + /* Assume we shouldn't copy to the alt-ref if the bit is missing */
|
| + xd->corrupted |= vp8dx_bool_error(bc);
|
| + if (pbi->ec_active && xd->corrupted)
|
| + pc->copy_buffer_to_arf = 0;
|
| +#endif
|
| +
|
| +
|
| + pc->ref_frame_sign_bias[GOLDEN_FRAME] = vp8_read_bit(bc);
|
| + pc->ref_frame_sign_bias[ALTREF_FRAME] = vp8_read_bit(bc);
|
| + }
|
| +
|
| + pc->refresh_entropy_probs = vp8_read_bit(bc);
|
| +#if CONFIG_ERROR_CONCEALMENT
|
| + /* Assume we shouldn't refresh the probabilities if the bit is
|
| + * missing */
|
| + xd->corrupted |= vp8dx_bool_error(bc);
|
| + if (pbi->ec_active && xd->corrupted)
|
| + pc->refresh_entropy_probs = 0;
|
| +#endif
|
| + if (pc->refresh_entropy_probs == 0)
|
| + {
|
| + vpx_memcpy(&pc->lfc, &pc->fc, sizeof(pc->fc));
|
| + }
|
| +
|
| + pc->refresh_last_frame = pc->frame_type == KEY_FRAME || vp8_read_bit(bc);
|
| +
|
| +#if CONFIG_ERROR_CONCEALMENT
|
| + /* Assume we should refresh the last frame if the bit is missing */
|
| + xd->corrupted |= vp8dx_bool_error(bc);
|
| + if (pbi->ec_active && xd->corrupted)
|
| + pc->refresh_last_frame = 1;
|
| +#endif
|
| +
|
| + if (0)
|
| + {
|
| + FILE *z = fopen("decodestats.stt", "a");
|
| + fprintf(z, "%6d F:%d,G:%d,A:%d,L:%d,Q:%d\n",
|
| + pc->current_video_frame,
|
| + pc->frame_type,
|
| + pc->refresh_golden_frame,
|
| + pc->refresh_alt_ref_frame,
|
| + pc->refresh_last_frame,
|
| + pc->base_qindex);
|
| + fclose(z);
|
| + }
|
| +
|
| + {
|
| + pbi->independent_partitions = 1;
|
| +
|
| + /* read coef probability tree */
|
| + for (i = 0; i < BLOCK_TYPES; i++)
|
| + for (j = 0; j < COEF_BANDS; j++)
|
| + for (k = 0; k < PREV_COEF_CONTEXTS; k++)
|
| + for (l = 0; l < ENTROPY_NODES; l++)
|
| + {
|
| +
|
| + vp8_prob *const p = pc->fc.coef_probs [i][j][k] + l;
|
| +
|
| + if (vp8_read(bc, vp8_coef_update_probs [i][j][k][l]))
|
| + {
|
| + *p = (vp8_prob)vp8_read_literal(bc, 8);
|
| +
|
| + }
|
| + if (k > 0 && *p != pc->fc.coef_probs[i][j][k-1][l])
|
| + pbi->independent_partitions = 0;
|
| +
|
| + }
|
| + }
|
| +
|
| + /* clear out the coeff buffer */
|
| + vpx_memset(xd->qcoeff, 0, sizeof(xd->qcoeff));
|
| +
|
| + vp8_decode_mode_mvs(pbi);
|
| +
|
| +#if CONFIG_ERROR_CONCEALMENT
|
| + if (pbi->ec_active &&
|
| + pbi->mvs_corrupt_from_mb < (unsigned int)pc->mb_cols * pc->mb_rows)
|
| + {
|
| + /* Motion vectors are missing in this frame. We will try to estimate
|
| + * them and then continue decoding the frame as usual */
|
| + vp8_estimate_missing_mvs(pbi);
|
| + }
|
| +#endif
|
| +
|
| + vpx_memset(pc->above_context, 0, sizeof(ENTROPY_CONTEXT_PLANES) * pc->mb_cols);
|
| + pbi->frame_corrupt_residual = 0;
|
| +
|
| +#if CONFIG_MULTITHREAD
|
| + if (pbi->b_multithreaded_rd && pc->multi_token_partition != ONE_PARTITION)
|
| + {
|
| + unsigned int thread;
|
| + vp8mt_decode_mb_rows(pbi, xd);
|
| + vp8_yv12_extend_frame_borders(yv12_fb_new);
|
| + for (thread = 0; thread < pbi->decoding_thread_count; ++thread)
|
| + corrupt_tokens |= pbi->mb_row_di[thread].mbd.corrupted;
|
| + }
|
| + else
|
| +#endif
|
| + {
|
| + decode_mb_rows(pbi);
|
| + corrupt_tokens |= xd->corrupted;
|
| + }
|
| +
|
| + /* Collect information about decoder corruption. */
|
| + /* 1. Check first boolean decoder for errors. */
|
| + yv12_fb_new->corrupted = vp8dx_bool_error(bc);
|
| + /* 2. Check the macroblock information */
|
| + yv12_fb_new->corrupted |= corrupt_tokens;
|
| +
|
| + if (!pbi->decoded_key_frame)
|
| + {
|
| + if (pc->frame_type == KEY_FRAME &&
|
| + !yv12_fb_new->corrupted)
|
| + pbi->decoded_key_frame = 1;
|
| + else
|
| + vpx_internal_error(&pbi->common.error, VPX_CODEC_CORRUPT_FRAME,
|
| + "A stream must start with a complete key frame");
|
| + }
|
| +
|
| + /* vpx_log("Decoder: Frame Decoded, Size Roughly:%d bytes \n",bc->pos+pbi->bc2.pos); */
|
| +
|
| + if (pc->refresh_entropy_probs == 0)
|
| + {
|
| + vpx_memcpy(&pc->fc, &pc->lfc, sizeof(pc->fc));
|
| + pbi->independent_partitions = prev_independent_partitions;
|
| + }
|
| +
|
| +#ifdef PACKET_TESTING
|
| + {
|
| + FILE *f = fopen("decompressor.VP8", "ab");
|
| + unsigned int size = pbi->bc2.pos + pbi->bc.pos + 8;
|
| + fwrite((void *) &size, 4, 1, f);
|
| + fwrite((void *) pbi->Source, size, 1, f);
|
| + fclose(f);
|
| + }
|
| +#endif
|
| +
|
| + return 0;
|
| +}
|
|
|
Chromium Code Reviews
Issue 111463005:
libvpx: Pull from upstream (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/deps/third_party/libvpx/