| /* |
| * 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/common.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/reconintra.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 "vpx_dsp/vpx_dsp_common.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; |
| #else |
| (void)mb_idx; |
| #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; |
| 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 |
| * */ |
| 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) |
| 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); |
| 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); |
| 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); |
| 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++) |
| { |
| 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++) |
| { |
| 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++) |
| { |
| 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++) |
| { |
| 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++) |
| { |
| 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++) |
| { |
| 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++) |
| { |
| memset(dest_ptr1, src_ptr1[0], Border); |
| 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++) |
| { |
| memset(dest_ptr1, src_ptr1[0], Border); |
| 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++) |
| { |
| memset(dest_ptr1, src_ptr1[0], Border); |
| 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; |
| 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; |
| |
| if (xd->mode_info_context->mbmi.ref_frame >= LAST_FRAME) { |
| const MV_REFERENCE_FRAME ref = xd->mode_info_context->mbmi.ref_frame; |
| xd->pre.y_buffer = ref_buffer[ref][0] + recon_yoffset; |
| xd->pre.u_buffer = ref_buffer[ref][1] + recon_uvoffset; |
| xd->pre.v_buffer = ref_buffer[ref][2] + recon_uvoffset; |
| } else { |
| // ref_frame is INTRA_FRAME, pre buffer should not be used. |
| xd->pre.y_buffer = 0; |
| xd->pre.u_buffer = 0; |
| xd->pre.v_buffer = 0; |
| } |
| |
| /* 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; |
| } |
| if (pbi->decoding_thread_count > pbi->common.mb_rows - 1) { |
| pbi->decoding_thread_count = pbi->common.mb_rows - 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 */ |
| 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). */ |
| 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 */ |
| memset(xd->ref_lf_deltas, 0, sizeof(xd->ref_lf_deltas)); |
| 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)VPXMIN(sizeof(clear_buffer), data_end - data); |
| 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; |
| } |
| else |
| { |
| memcpy(&xd->pre, yv12_fb_new, sizeof(YV12_BUFFER_CONFIG)); |
| 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); |
| |
| 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 */ |
| 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) |
| { |
| 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 */ |
| 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 |
| |
| 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) |
| { |
| 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; |
| } |
