diff options
Diffstat (limited to 'thirdparty/libvpx/vp8/decoder/decodeframe.c')
| -rw-r--r-- | thirdparty/libvpx/vp8/decoder/decodeframe.c | 1397 |
1 files changed, 0 insertions, 1397 deletions
diff --git a/thirdparty/libvpx/vp8/decoder/decodeframe.c b/thirdparty/libvpx/vp8/decoder/decodeframe.c deleted file mode 100644 index 51acdbb9c8..0000000000 --- a/thirdparty/libvpx/vp8/decoder/decodeframe.c +++ /dev/null @@ -1,1397 +0,0 @@ -/* - * 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)); - - 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); - } - } -#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; -#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 int data_sz = pbi->fragments.sizes[0]; - const unsigned char *data_end = data + data_sz; - 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_sz); - 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; -} |