| /* |
| * 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 "vp9/decoder/vp9_onyxd_int.h" |
| #include "vp9/common/vp9_common.h" |
| #include "vp9/common/vp9_header.h" |
| #include "vp9/common/vp9_reconintra.h" |
| #include "vp9/common/vp9_reconinter.h" |
| #include "vp9/common/vp9_entropy.h" |
| #include "vp9/decoder/vp9_decodframe.h" |
| #include "vp9/decoder/vp9_detokenize.h" |
| #include "vp9/common/vp9_invtrans.h" |
| #include "vp9/common/vp9_alloccommon.h" |
| #include "vp9/common/vp9_entropymode.h" |
| #include "vp9/common/vp9_quant_common.h" |
| #include "vpx_scale/vpx_scale.h" |
| #include "vp9/common/vp9_setupintrarecon.h" |
| |
| #include "vp9/decoder/vp9_decodemv.h" |
| #include "vp9/common/vp9_extend.h" |
| #include "vp9/common/vp9_modecont.h" |
| #include "vpx_mem/vpx_mem.h" |
| #include "vp9/decoder/vp9_dboolhuff.h" |
| |
| #include "vp9/common/vp9_seg_common.h" |
| #include "vp9/common/vp9_tile_common.h" |
| #include "vp9_rtcd.h" |
| |
| #include <assert.h> |
| #include <stdio.h> |
| |
| #define COEFCOUNT_TESTING |
| |
| // #define DEC_DEBUG |
| #ifdef DEC_DEBUG |
| int dec_debug = 0; |
| #endif |
| |
| static int merge_index(int v, int n, int modulus) { |
| int max1 = (n - 1 - modulus / 2) / modulus + 1; |
| if (v < max1) v = v * modulus + modulus / 2; |
| else { |
| int w; |
| v -= max1; |
| w = v; |
| v += (v + modulus - modulus / 2) / modulus; |
| while (v % modulus == modulus / 2 || |
| w != v - (v + modulus - modulus / 2) / modulus) v++; |
| } |
| return v; |
| } |
| |
| static int inv_remap_prob(int v, int m) { |
| const int n = 256; |
| const int modulus = MODULUS_PARAM; |
| int i; |
| v = merge_index(v, n - 1, modulus); |
| if ((m << 1) <= n) { |
| i = vp9_inv_recenter_nonneg(v + 1, m); |
| } else { |
| i = n - 1 - vp9_inv_recenter_nonneg(v + 1, n - 1 - m); |
| } |
| return i; |
| } |
| |
| static vp9_prob read_prob_diff_update(vp9_reader *const bc, int oldp) { |
| int delp = vp9_decode_term_subexp(bc, SUBEXP_PARAM, 255); |
| return (vp9_prob)inv_remap_prob(delp, oldp); |
| } |
| |
| void vp9_init_de_quantizer(VP9D_COMP *pbi) { |
| int i; |
| int q; |
| VP9_COMMON *const pc = &pbi->common; |
| |
| for (q = 0; q < QINDEX_RANGE; q++) { |
| pc->Y1dequant[q][0] = (int16_t)vp9_dc_quant(q, pc->y1dc_delta_q); |
| pc->UVdequant[q][0] = (int16_t)vp9_dc_uv_quant(q, pc->uvdc_delta_q); |
| |
| /* all the ac values =; */ |
| for (i = 1; i < 16; i++) { |
| int rc = vp9_default_zig_zag1d_4x4[i]; |
| |
| pc->Y1dequant[q][rc] = (int16_t)vp9_ac_yquant(q); |
| pc->UVdequant[q][rc] = (int16_t)vp9_ac_uv_quant(q, pc->uvac_delta_q); |
| } |
| } |
| } |
| |
| static void mb_init_dequantizer(VP9D_COMP *pbi, MACROBLOCKD *xd) { |
| int i; |
| int qindex; |
| VP9_COMMON *const pc = &pbi->common; |
| int segment_id = xd->mode_info_context->mbmi.segment_id; |
| |
| // Set the Q baseline allowing for any segment level adjustment |
| if (vp9_segfeature_active(xd, segment_id, SEG_LVL_ALT_Q)) { |
| if (xd->mb_segment_abs_delta == SEGMENT_ABSDATA) |
| /* Abs Value */ |
| qindex = vp9_get_segdata(xd, segment_id, SEG_LVL_ALT_Q); |
| else { |
| /* Delta Value */ |
| qindex = pc->base_qindex + |
| vp9_get_segdata(xd, segment_id, SEG_LVL_ALT_Q); |
| /* Clamp to valid range */ |
| qindex = (qindex >= 0) ? ((qindex <= MAXQ) ? qindex : MAXQ) : 0; |
| } |
| } else |
| qindex = pc->base_qindex; |
| |
| xd->q_index = qindex; |
| |
| /* Set up the block level dequant pointers */ |
| for (i = 0; i < 16; i++) { |
| xd->block[i].dequant = pc->Y1dequant[qindex]; |
| } |
| |
| xd->inv_txm4x4_1 = vp9_short_idct4x4llm_1; |
| xd->inv_txm4x4 = vp9_short_idct4x4llm; |
| xd->itxm_add = vp9_dequant_idct_add; |
| xd->itxm_add_y_block = vp9_dequant_idct_add_y_block; |
| xd->itxm_add_uv_block = vp9_dequant_idct_add_uv_block; |
| if (xd->lossless) { |
| assert(qindex == 0); |
| xd->inv_txm4x4_1 = vp9_short_inv_walsh4x4_1_x8; |
| xd->inv_txm4x4 = vp9_short_inv_walsh4x4_x8; |
| xd->itxm_add = vp9_dequant_idct_add_lossless_c; |
| xd->itxm_add_y_block = vp9_dequant_idct_add_y_block_lossless_c; |
| xd->itxm_add_uv_block = vp9_dequant_idct_add_uv_block_lossless_c; |
| } |
| |
| for (i = 16; i < 24; i++) { |
| xd->block[i].dequant = pc->UVdequant[qindex]; |
| } |
| } |
| |
| /* skip_recon_mb() is Modified: Instead of writing the result to predictor buffer and then copying it |
| * to dst buffer, we can write the result directly to dst buffer. This eliminates unnecessary copy. |
| */ |
| static void skip_recon_mb(VP9D_COMP *pbi, MACROBLOCKD *xd, |
| int mb_row, int mb_col) { |
| BLOCK_SIZE_TYPE sb_type = xd->mode_info_context->mbmi.sb_type; |
| |
| if (xd->mode_info_context->mbmi.ref_frame == INTRA_FRAME) { |
| if (sb_type == BLOCK_SIZE_SB64X64) { |
| vp9_build_intra_predictors_sb64uv_s(xd); |
| vp9_build_intra_predictors_sb64y_s(xd); |
| } else if (sb_type == BLOCK_SIZE_SB32X32) { |
| vp9_build_intra_predictors_sbuv_s(xd); |
| vp9_build_intra_predictors_sby_s(xd); |
| } else { |
| vp9_build_intra_predictors_mbuv_s(xd); |
| vp9_build_intra_predictors_mby_s(xd); |
| } |
| } else { |
| if (sb_type == BLOCK_SIZE_SB64X64) { |
| vp9_build_inter64x64_predictors_sb(xd, |
| xd->dst.y_buffer, |
| xd->dst.u_buffer, |
| xd->dst.v_buffer, |
| xd->dst.y_stride, |
| xd->dst.uv_stride, |
| mb_row, mb_col); |
| } else if (sb_type == BLOCK_SIZE_SB32X32) { |
| vp9_build_inter32x32_predictors_sb(xd, |
| xd->dst.y_buffer, |
| xd->dst.u_buffer, |
| xd->dst.v_buffer, |
| xd->dst.y_stride, |
| xd->dst.uv_stride, |
| mb_row, mb_col); |
| } else { |
| vp9_build_inter16x16_predictors_mb(xd, |
| xd->dst.y_buffer, |
| xd->dst.u_buffer, |
| xd->dst.v_buffer, |
| xd->dst.y_stride, |
| xd->dst.uv_stride, |
| mb_row, mb_col); |
| #if CONFIG_COMP_INTERINTRA_PRED |
| if (xd->mode_info_context->mbmi.second_ref_frame == INTRA_FRAME) { |
| vp9_build_interintra_16x16_predictors_mb(xd, |
| xd->dst.y_buffer, |
| xd->dst.u_buffer, |
| xd->dst.v_buffer, |
| xd->dst.y_stride, |
| xd->dst.uv_stride); |
| } |
| #endif |
| } |
| } |
| } |
| |
| static void decode_16x16(VP9D_COMP *pbi, MACROBLOCKD *xd, |
| BOOL_DECODER* const bc) { |
| TX_TYPE tx_type = get_tx_type_16x16(xd, 0); |
| #ifdef DEC_DEBUG |
| if (dec_debug) { |
| int i; |
| printf("\n"); |
| printf("qcoeff 16x16\n"); |
| for (i = 0; i < 400; i++) { |
| printf("%3d ", xd->qcoeff[i]); |
| if (i % 16 == 15) printf("\n"); |
| } |
| printf("\n"); |
| printf("predictor\n"); |
| for (i = 0; i < 400; i++) { |
| printf("%3d ", xd->predictor[i]); |
| if (i % 16 == 15) printf("\n"); |
| } |
| } |
| #endif |
| if (tx_type != DCT_DCT) { |
| vp9_ht_dequant_idct_add_16x16_c(tx_type, xd->qcoeff, |
| xd->block[0].dequant, xd->predictor, |
| xd->dst.y_buffer, 16, xd->dst.y_stride, |
| xd->eobs[0]); |
| } else { |
| vp9_dequant_idct_add_16x16(xd->qcoeff, xd->block[0].dequant, |
| xd->predictor, xd->dst.y_buffer, |
| 16, xd->dst.y_stride, xd->eobs[0]); |
| } |
| vp9_dequant_idct_add_uv_block_8x8( |
| xd->qcoeff + 16 * 16, xd->block[16].dequant, |
| xd->predictor + 16 * 16, xd->dst.u_buffer, xd->dst.v_buffer, |
| xd->dst.uv_stride, xd); |
| } |
| |
| static void decode_8x8(VP9D_COMP *pbi, MACROBLOCKD *xd, |
| BOOL_DECODER* const bc) { |
| // First do Y |
| // if the first one is DCT_DCT assume all the rest are as well |
| TX_TYPE tx_type = get_tx_type_8x8(xd, 0); |
| #ifdef DEC_DEBUG |
| if (dec_debug) { |
| int i; |
| printf("\n"); |
| printf("qcoeff 8x8\n"); |
| for (i = 0; i < 384; i++) { |
| printf("%3d ", xd->qcoeff[i]); |
| if (i % 16 == 15) printf("\n"); |
| } |
| } |
| #endif |
| if (tx_type != DCT_DCT || xd->mode_info_context->mbmi.mode == I8X8_PRED) { |
| int i; |
| for (i = 0; i < 4; i++) { |
| int ib = vp9_i8x8_block[i]; |
| int idx = (ib & 0x02) ? (ib + 2) : ib; |
| int16_t *q = xd->block[idx].qcoeff; |
| int16_t *dq = xd->block[0].dequant; |
| uint8_t *pre = xd->block[ib].predictor; |
| uint8_t *dst = *(xd->block[ib].base_dst) + xd->block[ib].dst; |
| int stride = xd->dst.y_stride; |
| BLOCKD *b = &xd->block[ib]; |
| if (xd->mode_info_context->mbmi.mode == I8X8_PRED) { |
| int i8x8mode = b->bmi.as_mode.first; |
| vp9_intra8x8_predict(xd, b, i8x8mode, b->predictor); |
| } |
| tx_type = get_tx_type_8x8(xd, ib); |
| if (tx_type != DCT_DCT) { |
| vp9_ht_dequant_idct_add_8x8_c(tx_type, q, dq, pre, dst, 16, stride, |
| xd->eobs[idx]); |
| } else { |
| vp9_dequant_idct_add_8x8_c(q, dq, pre, dst, 16, stride, |
| xd->eobs[idx]); |
| } |
| } |
| } else { |
| vp9_dequant_idct_add_y_block_8x8(xd->qcoeff, |
| xd->block[0].dequant, |
| xd->predictor, |
| xd->dst.y_buffer, |
| xd->dst.y_stride, |
| xd); |
| } |
| |
| // Now do UV |
| if (xd->mode_info_context->mbmi.mode == I8X8_PRED) { |
| int i; |
| for (i = 0; i < 4; i++) { |
| int ib = vp9_i8x8_block[i]; |
| BLOCKD *b = &xd->block[ib]; |
| int i8x8mode = b->bmi.as_mode.first; |
| b = &xd->block[16 + i]; |
| vp9_intra_uv4x4_predict(xd, &xd->block[16 + i], i8x8mode, b->predictor); |
| xd->itxm_add(b->qcoeff, b->dequant, b->predictor, |
| *(b->base_dst) + b->dst, 8, b->dst_stride, xd->eobs[16 + i]); |
| b = &xd->block[20 + i]; |
| vp9_intra_uv4x4_predict(xd, &xd->block[20 + i], i8x8mode, b->predictor); |
| xd->itxm_add(b->qcoeff, b->dequant, b->predictor, |
| *(b->base_dst) + b->dst, 8, b->dst_stride, xd->eobs[20 + i]); |
| } |
| } else if (xd->mode_info_context->mbmi.mode == SPLITMV) { |
| xd->itxm_add_uv_block(xd->qcoeff + 16 * 16, xd->block[16].dequant, |
| xd->predictor + 16 * 16, xd->dst.u_buffer, xd->dst.v_buffer, |
| xd->dst.uv_stride, xd); |
| } else { |
| vp9_dequant_idct_add_uv_block_8x8 |
| (xd->qcoeff + 16 * 16, xd->block[16].dequant, |
| xd->predictor + 16 * 16, xd->dst.u_buffer, xd->dst.v_buffer, |
| xd->dst.uv_stride, xd); |
| } |
| #ifdef DEC_DEBUG |
| if (dec_debug) { |
| int i; |
| printf("\n"); |
| printf("predictor\n"); |
| for (i = 0; i < 384; i++) { |
| printf("%3d ", xd->predictor[i]); |
| if (i % 16 == 15) printf("\n"); |
| } |
| } |
| #endif |
| } |
| |
| static void decode_4x4(VP9D_COMP *pbi, MACROBLOCKD *xd, |
| BOOL_DECODER* const bc) { |
| TX_TYPE tx_type; |
| int i, eobtotal = 0; |
| MB_PREDICTION_MODE mode = xd->mode_info_context->mbmi.mode; |
| if (mode == I8X8_PRED) { |
| for (i = 0; i < 4; i++) { |
| int ib = vp9_i8x8_block[i]; |
| const int iblock[4] = {0, 1, 4, 5}; |
| int j; |
| int i8x8mode; |
| BLOCKD *b; |
| b = &xd->block[ib]; |
| i8x8mode = b->bmi.as_mode.first; |
| vp9_intra8x8_predict(xd, b, i8x8mode, b->predictor); |
| for (j = 0; j < 4; j++) { |
| b = &xd->block[ib + iblock[j]]; |
| tx_type = get_tx_type_4x4(xd, ib + iblock[j]); |
| if (tx_type != DCT_DCT) { |
| vp9_ht_dequant_idct_add_c(tx_type, b->qcoeff, |
| b->dequant, b->predictor, |
| *(b->base_dst) + b->dst, 16, |
| b->dst_stride, xd->eobs[ib + iblock[j]]); |
| } else { |
| xd->itxm_add(b->qcoeff, b->dequant, b->predictor, |
| *(b->base_dst) + b->dst, 16, b->dst_stride, |
| xd->eobs[ib + iblock[j]]); |
| } |
| } |
| b = &xd->block[16 + i]; |
| vp9_intra_uv4x4_predict(xd, b, i8x8mode, b->predictor); |
| xd->itxm_add(b->qcoeff, b->dequant, b->predictor, |
| *(b->base_dst) + b->dst, 8, b->dst_stride, xd->eobs[16 + i]); |
| b = &xd->block[20 + i]; |
| vp9_intra_uv4x4_predict(xd, b, i8x8mode, b->predictor); |
| xd->itxm_add(b->qcoeff, b->dequant, b->predictor, |
| *(b->base_dst) + b->dst, 8, b->dst_stride, xd->eobs[20 + i]); |
| } |
| } else if (mode == B_PRED) { |
| for (i = 0; i < 16; i++) { |
| int b_mode; |
| BLOCKD *b = &xd->block[i]; |
| b_mode = xd->mode_info_context->bmi[i].as_mode.first; |
| #if CONFIG_NEWBINTRAMODES |
| xd->mode_info_context->bmi[i].as_mode.context = b->bmi.as_mode.context = |
| vp9_find_bpred_context(b); |
| #endif |
| if (!xd->mode_info_context->mbmi.mb_skip_coeff) |
| eobtotal += vp9_decode_coefs_4x4(pbi, xd, bc, PLANE_TYPE_Y_WITH_DC, i); |
| |
| vp9_intra4x4_predict(xd, b, b_mode, b->predictor); |
| tx_type = get_tx_type_4x4(xd, i); |
| if (tx_type != DCT_DCT) { |
| vp9_ht_dequant_idct_add_c(tx_type, b->qcoeff, |
| b->dequant, b->predictor, |
| *(b->base_dst) + b->dst, 16, b->dst_stride, |
| xd->eobs[i]); |
| } else { |
| xd->itxm_add(b->qcoeff, b->dequant, b->predictor, |
| *(b->base_dst) + b->dst, 16, b->dst_stride, xd->eobs[i]); |
| } |
| } |
| if (!xd->mode_info_context->mbmi.mb_skip_coeff) { |
| vp9_decode_mb_tokens_4x4_uv(pbi, xd, bc); |
| } |
| vp9_build_intra_predictors_mbuv(xd); |
| xd->itxm_add_uv_block(xd->qcoeff + 16 * 16, |
| xd->block[16].dequant, |
| xd->predictor + 16 * 16, |
| xd->dst.u_buffer, |
| xd->dst.v_buffer, |
| xd->dst.uv_stride, |
| xd); |
| } else if (mode == SPLITMV || get_tx_type_4x4(xd, 0) == DCT_DCT) { |
| xd->itxm_add_y_block(xd->qcoeff, |
| xd->block[0].dequant, |
| xd->predictor, |
| xd->dst.y_buffer, |
| xd->dst.y_stride, |
| xd); |
| xd->itxm_add_uv_block(xd->qcoeff + 16 * 16, |
| xd->block[16].dequant, |
| xd->predictor + 16 * 16, |
| xd->dst.u_buffer, |
| xd->dst.v_buffer, |
| xd->dst.uv_stride, |
| xd); |
| } else { |
| #ifdef DEC_DEBUG |
| if (dec_debug) { |
| int i; |
| printf("\n"); |
| printf("qcoeff 4x4\n"); |
| for (i = 0; i < 400; i++) { |
| printf("%3d ", xd->qcoeff[i]); |
| if (i % 16 == 15) printf("\n"); |
| } |
| printf("\n"); |
| printf("predictor\n"); |
| for (i = 0; i < 400; i++) { |
| printf("%3d ", xd->predictor[i]); |
| if (i % 16 == 15) printf("\n"); |
| } |
| } |
| #endif |
| for (i = 0; i < 16; i++) { |
| BLOCKD *b = &xd->block[i]; |
| tx_type = get_tx_type_4x4(xd, i); |
| if (tx_type != DCT_DCT) { |
| vp9_ht_dequant_idct_add_c(tx_type, b->qcoeff, |
| b->dequant, b->predictor, |
| *(b->base_dst) + b->dst, 16, |
| b->dst_stride, xd->eobs[i]); |
| } else { |
| xd->itxm_add(b->qcoeff, b->dequant, b->predictor, |
| *(b->base_dst) + b->dst, 16, b->dst_stride, xd->eobs[i]); |
| } |
| } |
| xd->itxm_add_uv_block(xd->qcoeff + 16 * 16, |
| xd->block[16].dequant, |
| xd->predictor + 16 * 16, |
| xd->dst.u_buffer, |
| xd->dst.v_buffer, |
| xd->dst.uv_stride, |
| xd); |
| } |
| } |
| |
| static void decode_superblock64(VP9D_COMP *pbi, MACROBLOCKD *xd, |
| int mb_row, int mb_col, |
| BOOL_DECODER* const bc) { |
| int n, eobtotal; |
| VP9_COMMON *const pc = &pbi->common; |
| MODE_INFO *mi = xd->mode_info_context; |
| const int mis = pc->mode_info_stride; |
| |
| assert(xd->mode_info_context->mbmi.sb_type == BLOCK_SIZE_SB64X64); |
| |
| if (pbi->common.frame_type != KEY_FRAME) |
| vp9_setup_interp_filters(xd, xd->mode_info_context->mbmi.interp_filter, pc); |
| |
| // re-initialize macroblock dequantizer before detokenization |
| if (xd->segmentation_enabled) |
| mb_init_dequantizer(pbi, xd); |
| |
| if (xd->mode_info_context->mbmi.mb_skip_coeff) { |
| vp9_reset_sb64_tokens_context(xd); |
| |
| /* Special case: Force the loopfilter to skip when eobtotal and |
| * mb_skip_coeff are zero. |
| */ |
| skip_recon_mb(pbi, xd, mb_row, mb_col); |
| return; |
| } |
| |
| /* do prediction */ |
| if (xd->mode_info_context->mbmi.ref_frame == INTRA_FRAME) { |
| vp9_build_intra_predictors_sb64y_s(xd); |
| vp9_build_intra_predictors_sb64uv_s(xd); |
| } else { |
| vp9_build_inter64x64_predictors_sb(xd, xd->dst.y_buffer, |
| xd->dst.u_buffer, xd->dst.v_buffer, |
| xd->dst.y_stride, xd->dst.uv_stride, |
| mb_row, mb_col); |
| } |
| |
| /* dequantization and idct */ |
| eobtotal = vp9_decode_sb64_tokens(pbi, xd, bc); |
| if (eobtotal == 0) { // skip loopfilter |
| for (n = 0; n < 16; n++) { |
| const int x_idx = n & 3, y_idx = n >> 2; |
| |
| if (mb_col + x_idx < pc->mb_cols && mb_row + y_idx < pc->mb_rows) |
| mi[y_idx * mis + x_idx].mbmi.mb_skip_coeff = mi->mbmi.mb_skip_coeff; |
| } |
| } else { |
| switch (xd->mode_info_context->mbmi.txfm_size) { |
| case TX_32X32: |
| for (n = 0; n < 4; n++) { |
| const int x_idx = n & 1, y_idx = n >> 1; |
| vp9_dequant_idct_add_32x32(xd->qcoeff + n * 1024, |
| xd->block[0].dequant, |
| xd->dst.y_buffer + x_idx * 32 + y_idx * xd->dst.y_stride * 32, |
| xd->dst.y_buffer + x_idx * 32 + y_idx * xd->dst.y_stride * 32, |
| xd->dst.y_stride, xd->dst.y_stride, xd->eobs[n * 64]); |
| } |
| vp9_dequant_idct_add_32x32(xd->qcoeff + 4096, |
| xd->block[16].dequant, xd->dst.u_buffer, xd->dst.u_buffer, |
| xd->dst.uv_stride, xd->dst.uv_stride, xd->eobs[256]); |
| vp9_dequant_idct_add_32x32(xd->qcoeff + 4096 + 1024, |
| xd->block[20].dequant, xd->dst.v_buffer, xd->dst.v_buffer, |
| xd->dst.uv_stride, xd->dst.uv_stride, xd->eobs[320]); |
| break; |
| case TX_16X16: |
| for (n = 0; n < 16; n++) { |
| const int x_idx = n & 3, y_idx = n >> 2; |
| const TX_TYPE tx_type = get_tx_type_16x16(xd, |
| (y_idx * 16 + x_idx) * 4); |
| if (tx_type == DCT_DCT) { |
| vp9_dequant_idct_add_16x16(xd->qcoeff + n * 256, |
| xd->block[0].dequant, |
| xd->dst.y_buffer + y_idx * 16 * xd->dst.y_stride + x_idx * 16, |
| xd->dst.y_buffer + y_idx * 16 * xd->dst.y_stride + x_idx * 16, |
| xd->dst.y_stride, xd->dst.y_stride, xd->eobs[n * 16]); |
| } else { |
| vp9_ht_dequant_idct_add_16x16_c(tx_type, xd->qcoeff + n * 256, |
| xd->block[0].dequant, |
| xd->dst.y_buffer + y_idx * 16 * xd->dst.y_stride + x_idx * 16, |
| xd->dst.y_buffer + y_idx * 16 * xd->dst.y_stride + x_idx * 16, |
| xd->dst.y_stride, xd->dst.y_stride, xd->eobs[n * 16]); |
| } |
| } |
| for (n = 0; n < 4; n++) { |
| const int x_idx = n & 1, y_idx = n >> 1; |
| vp9_dequant_idct_add_16x16(xd->qcoeff + 4096 + n * 256, |
| xd->block[16].dequant, |
| xd->dst.u_buffer + y_idx * 16 * xd->dst.uv_stride + x_idx * 16, |
| xd->dst.u_buffer + y_idx * 16 * xd->dst.uv_stride + x_idx * 16, |
| xd->dst.uv_stride, xd->dst.uv_stride, xd->eobs[256 + n * 16]); |
| vp9_dequant_idct_add_16x16(xd->qcoeff + 4096 + 1024 + n * 256, |
| xd->block[20].dequant, |
| xd->dst.v_buffer + y_idx * 16 * xd->dst.uv_stride + x_idx * 16, |
| xd->dst.v_buffer + y_idx * 16 * xd->dst.uv_stride + x_idx * 16, |
| xd->dst.uv_stride, xd->dst.uv_stride, xd->eobs[320 + n * 16]); |
| } |
| break; |
| case TX_8X8: |
| for (n = 0; n < 64; n++) { |
| const int x_idx = n & 7, y_idx = n >> 3; |
| const TX_TYPE tx_type = get_tx_type_8x8(xd, (y_idx * 16 + x_idx) * 2); |
| if (tx_type == DCT_DCT) { |
| vp9_dequant_idct_add_8x8_c(xd->qcoeff + n * 64, |
| xd->block[0].dequant, |
| xd->dst.y_buffer + y_idx * 8 * xd->dst.y_stride + x_idx * 8, |
| xd->dst.y_buffer + y_idx * 8 * xd->dst.y_stride + x_idx * 8, |
| xd->dst.y_stride, xd->dst.y_stride, xd->eobs[n * 4]); |
| } else { |
| vp9_ht_dequant_idct_add_8x8_c(tx_type, xd->qcoeff + n * 64, |
| xd->block[0].dequant, |
| xd->dst.y_buffer + y_idx * 8 * xd->dst.y_stride + x_idx * 8, |
| xd->dst.y_buffer + y_idx * 8 * xd->dst.y_stride + x_idx * 8, |
| xd->dst.y_stride, xd->dst.y_stride, xd->eobs[n * 4]); |
| } |
| } |
| for (n = 0; n < 16; n++) { |
| const int x_idx = n & 3, y_idx = n >> 2; |
| vp9_dequant_idct_add_8x8_c(xd->qcoeff + n * 64 + 4096, |
| xd->block[16].dequant, |
| xd->dst.u_buffer + y_idx * 8 * xd->dst.uv_stride + x_idx * 8, |
| xd->dst.u_buffer + y_idx * 8 * xd->dst.uv_stride + x_idx * 8, |
| xd->dst.uv_stride, xd->dst.uv_stride, xd->eobs[256 + n * 4]); |
| vp9_dequant_idct_add_8x8_c(xd->qcoeff + n * 64 + 4096 + 1024, |
| xd->block[20].dequant, |
| xd->dst.v_buffer + y_idx * 8 * xd->dst.uv_stride + x_idx * 8, |
| xd->dst.v_buffer + y_idx * 8 * xd->dst.uv_stride + x_idx * 8, |
| xd->dst.uv_stride, xd->dst.uv_stride, xd->eobs[320 + n * 4]); |
| } |
| break; |
| case TX_4X4: |
| for (n = 0; n < 256; n++) { |
| const int x_idx = n & 15, y_idx = n >> 4; |
| const TX_TYPE tx_type = get_tx_type_4x4(xd, y_idx * 16 + x_idx); |
| if (tx_type == DCT_DCT) { |
| xd->itxm_add(xd->qcoeff + n * 16, xd->block[0].dequant, |
| xd->dst.y_buffer + y_idx * 4 * xd->dst.y_stride + x_idx * 4, |
| xd->dst.y_buffer + y_idx * 4 * xd->dst.y_stride + x_idx * 4, |
| xd->dst.y_stride, xd->dst.y_stride, xd->eobs[n]); |
| } else { |
| vp9_ht_dequant_idct_add_c(tx_type, xd->qcoeff + n * 16, |
| xd->block[0].dequant, |
| xd->dst.y_buffer + y_idx * 4 * xd->dst.y_stride + x_idx * 4, |
| xd->dst.y_buffer + y_idx * 4 * xd->dst.y_stride + x_idx * 4, |
| xd->dst.y_stride, xd->dst.y_stride, xd->eobs[n]); |
| } |
| } |
| for (n = 0; n < 64; n++) { |
| const int x_idx = n & 7, y_idx = n >> 3; |
| xd->itxm_add(xd->qcoeff + 4096 + n * 16, |
| xd->block[16].dequant, |
| xd->dst.u_buffer + y_idx * 4 * xd->dst.uv_stride + x_idx * 4, |
| xd->dst.u_buffer + y_idx * 4 * xd->dst.uv_stride + x_idx * 4, |
| xd->dst.uv_stride, xd->dst.uv_stride, xd->eobs[256 + n]); |
| xd->itxm_add(xd->qcoeff + 4096 + 1024 + n * 16, |
| xd->block[20].dequant, |
| xd->dst.v_buffer + y_idx * 4 * xd->dst.uv_stride + x_idx * 4, |
| xd->dst.v_buffer + y_idx * 4 * xd->dst.uv_stride + x_idx * 4, |
| xd->dst.uv_stride, xd->dst.uv_stride, xd->eobs[320 + n]); |
| } |
| break; |
| default: assert(0); |
| } |
| } |
| } |
| |
| static void decode_superblock32(VP9D_COMP *pbi, MACROBLOCKD *xd, |
| int mb_row, int mb_col, |
| BOOL_DECODER* const bc) { |
| int n, eobtotal; |
| VP9_COMMON *const pc = &pbi->common; |
| const int mis = pc->mode_info_stride; |
| |
| assert(xd->mode_info_context->mbmi.sb_type == BLOCK_SIZE_SB32X32); |
| |
| if (pbi->common.frame_type != KEY_FRAME) |
| vp9_setup_interp_filters(xd, xd->mode_info_context->mbmi.interp_filter, pc); |
| |
| // re-initialize macroblock dequantizer before detokenization |
| if (xd->segmentation_enabled) |
| mb_init_dequantizer(pbi, xd); |
| |
| if (xd->mode_info_context->mbmi.mb_skip_coeff) { |
| vp9_reset_sb_tokens_context(xd); |
| |
| /* Special case: Force the loopfilter to skip when eobtotal and |
| * mb_skip_coeff are zero. |
| */ |
| skip_recon_mb(pbi, xd, mb_row, mb_col); |
| return; |
| } |
| |
| /* do prediction */ |
| if (xd->mode_info_context->mbmi.ref_frame == INTRA_FRAME) { |
| vp9_build_intra_predictors_sby_s(xd); |
| vp9_build_intra_predictors_sbuv_s(xd); |
| } else { |
| vp9_build_inter32x32_predictors_sb(xd, xd->dst.y_buffer, |
| xd->dst.u_buffer, xd->dst.v_buffer, |
| xd->dst.y_stride, xd->dst.uv_stride, |
| mb_row, mb_col); |
| } |
| |
| /* dequantization and idct */ |
| eobtotal = vp9_decode_sb_tokens(pbi, xd, bc); |
| if (eobtotal == 0) { // skip loopfilter |
| xd->mode_info_context->mbmi.mb_skip_coeff = 1; |
| if (mb_col + 1 < pc->mb_cols) |
| xd->mode_info_context[1].mbmi.mb_skip_coeff = 1; |
| if (mb_row + 1 < pc->mb_rows) { |
| xd->mode_info_context[mis].mbmi.mb_skip_coeff = 1; |
| if (mb_col + 1 < pc->mb_cols) |
| xd->mode_info_context[mis + 1].mbmi.mb_skip_coeff = 1; |
| } |
| } else { |
| switch (xd->mode_info_context->mbmi.txfm_size) { |
| case TX_32X32: |
| vp9_dequant_idct_add_32x32(xd->qcoeff, xd->block[0].dequant, |
| xd->dst.y_buffer, xd->dst.y_buffer, |
| xd->dst.y_stride, xd->dst.y_stride, |
| xd->eobs[0]); |
| vp9_dequant_idct_add_uv_block_16x16_c(xd->qcoeff + 1024, |
| xd->block[16].dequant, |
| xd->dst.u_buffer, |
| xd->dst.v_buffer, |
| xd->dst.uv_stride, xd); |
| break; |
| case TX_16X16: |
| for (n = 0; n < 4; n++) { |
| const int x_idx = n & 1, y_idx = n >> 1; |
| const TX_TYPE tx_type = get_tx_type_16x16(xd, |
| (y_idx * 8 + x_idx) * 4); |
| if (tx_type == DCT_DCT) { |
| vp9_dequant_idct_add_16x16( |
| xd->qcoeff + n * 256, xd->block[0].dequant, |
| xd->dst.y_buffer + y_idx * 16 * xd->dst.y_stride + x_idx * 16, |
| xd->dst.y_buffer + y_idx * 16 * xd->dst.y_stride + x_idx * 16, |
| xd->dst.y_stride, xd->dst.y_stride, xd->eobs[n * 16]); |
| } else { |
| vp9_ht_dequant_idct_add_16x16_c(tx_type, xd->qcoeff + n * 256, |
| xd->block[0].dequant, |
| xd->dst.y_buffer + y_idx * 16 * xd->dst.y_stride + x_idx * 16, |
| xd->dst.y_buffer + y_idx * 16 * xd->dst.y_stride + x_idx * 16, |
| xd->dst.y_stride, xd->dst.y_stride, xd->eobs[n * 16]); |
| } |
| } |
| vp9_dequant_idct_add_uv_block_16x16_c(xd->qcoeff + 1024, |
| xd->block[16].dequant, |
| xd->dst.u_buffer, |
| xd->dst.v_buffer, |
| xd->dst.uv_stride, xd); |
| break; |
| case TX_8X8: |
| for (n = 0; n < 16; n++) { |
| const int x_idx = n & 3, y_idx = n >> 2; |
| const TX_TYPE tx_type = get_tx_type_8x8(xd, (y_idx * 8 + x_idx) * 2); |
| if (tx_type == DCT_DCT) { |
| vp9_dequant_idct_add_8x8_c(xd->qcoeff + n * 64, |
| xd->block[0].dequant, |
| xd->dst.y_buffer + y_idx * 8 * xd->dst.y_stride + x_idx * 8, |
| xd->dst.y_buffer + y_idx * 8 * xd->dst.y_stride + x_idx * 8, |
| xd->dst.y_stride, xd->dst.y_stride, xd->eobs[n * 4]); |
| } else { |
| vp9_ht_dequant_idct_add_8x8_c(tx_type, xd->qcoeff + n * 64, |
| xd->block[0].dequant, |
| xd->dst.y_buffer + y_idx * 8 * xd->dst.y_stride + x_idx * 8, |
| xd->dst.y_buffer + y_idx * 8 * xd->dst.y_stride + x_idx * 8, |
| xd->dst.y_stride, xd->dst.y_stride, xd->eobs[n * 4]); |
| } |
| } |
| for (n = 0; n < 4; n++) { |
| const int x_idx = n & 1, y_idx = n >> 1; |
| vp9_dequant_idct_add_8x8_c(xd->qcoeff + n * 64 + 1024, |
| xd->block[16].dequant, |
| xd->dst.u_buffer + y_idx * 8 * xd->dst.uv_stride + x_idx * 8, |
| xd->dst.u_buffer + y_idx * 8 * xd->dst.uv_stride + x_idx * 8, |
| xd->dst.uv_stride, xd->dst.uv_stride, xd->eobs[64 + n * 4]); |
| vp9_dequant_idct_add_8x8_c(xd->qcoeff + n * 64 + 1280, |
| xd->block[20].dequant, |
| xd->dst.v_buffer + y_idx * 8 * xd->dst.uv_stride + x_idx * 8, |
| xd->dst.v_buffer + y_idx * 8 * xd->dst.uv_stride + x_idx * 8, |
| xd->dst.uv_stride, xd->dst.uv_stride, xd->eobs[80 + n * 4]); |
| } |
| break; |
| case TX_4X4: |
| for (n = 0; n < 64; n++) { |
| const int x_idx = n & 7, y_idx = n >> 3; |
| const TX_TYPE tx_type = get_tx_type_4x4(xd, y_idx * 8 + x_idx); |
| if (tx_type == DCT_DCT) { |
| xd->itxm_add(xd->qcoeff + n * 16, xd->block[0].dequant, |
| xd->dst.y_buffer + y_idx * 4 * xd->dst.y_stride + x_idx * 4, |
| xd->dst.y_buffer + y_idx * 4 * xd->dst.y_stride + x_idx * 4, |
| xd->dst.y_stride, xd->dst.y_stride, xd->eobs[n]); |
| } else { |
| vp9_ht_dequant_idct_add_c(tx_type, xd->qcoeff + n * 16, |
| xd->block[0].dequant, |
| xd->dst.y_buffer + y_idx * 4 * xd->dst.y_stride + x_idx * 4, |
| xd->dst.y_buffer + y_idx * 4 * xd->dst.y_stride + x_idx * 4, |
| xd->dst.y_stride, xd->dst.y_stride, xd->eobs[n]); |
| } |
| } |
| for (n = 0; n < 16; n++) { |
| const int x_idx = n & 3, y_idx = n >> 2; |
| xd->itxm_add(xd->qcoeff + 1024 + n * 16, |
| xd->block[16].dequant, |
| xd->dst.u_buffer + y_idx * 4 * xd->dst.uv_stride + x_idx * 4, |
| xd->dst.u_buffer + y_idx * 4 * xd->dst.uv_stride + x_idx * 4, |
| xd->dst.uv_stride, xd->dst.uv_stride, xd->eobs[64 + n]); |
| xd->itxm_add(xd->qcoeff + 1280 + n * 16, |
| xd->block[20].dequant, |
| xd->dst.v_buffer + y_idx * 4 * xd->dst.uv_stride + x_idx * 4, |
| xd->dst.v_buffer + y_idx * 4 * xd->dst.uv_stride + x_idx * 4, |
| xd->dst.uv_stride, xd->dst.uv_stride, xd->eobs[80 + n]); |
| } |
| break; |
| default: assert(0); |
| } |
| } |
| } |
| |
| static void decode_macroblock(VP9D_COMP *pbi, MACROBLOCKD *xd, |
| int mb_row, unsigned int mb_col, |
| BOOL_DECODER* const bc) { |
| int eobtotal = 0; |
| MB_PREDICTION_MODE mode; |
| int tx_size; |
| |
| assert(!xd->mode_info_context->mbmi.sb_type); |
| |
| // re-initialize macroblock dequantizer before detokenization |
| if (xd->segmentation_enabled) |
| mb_init_dequantizer(pbi, xd); |
| |
| tx_size = xd->mode_info_context->mbmi.txfm_size; |
| mode = xd->mode_info_context->mbmi.mode; |
| |
| if (xd->mode_info_context->mbmi.mb_skip_coeff) { |
| vp9_reset_mb_tokens_context(xd); |
| } else if (!bool_error(bc)) { |
| if (mode != B_PRED) { |
| eobtotal = vp9_decode_mb_tokens(pbi, xd, bc); |
| } |
| } |
| |
| //mode = xd->mode_info_context->mbmi.mode; |
| if (pbi->common.frame_type != KEY_FRAME) |
| vp9_setup_interp_filters(xd, xd->mode_info_context->mbmi.interp_filter, |
| &pbi->common); |
| |
| if (eobtotal == 0 && |
| mode != B_PRED && |
| mode != SPLITMV && |
| mode != I8X8_PRED && |
| !bool_error(bc)) { |
| /* Special case: Force the loopfilter to skip when eobtotal and |
| mb_skip_coeff are zero. */ |
| xd->mode_info_context->mbmi.mb_skip_coeff = 1; |
| skip_recon_mb(pbi, xd, mb_row, mb_col); |
| return; |
| } |
| #ifdef DEC_DEBUG |
| if (dec_debug) |
| printf("Decoding mb: %d %d\n", xd->mode_info_context->mbmi.mode, tx_size); |
| #endif |
| |
| // moved to be performed before detokenization |
| // if (xd->segmentation_enabled) |
| // mb_init_dequantizer(pbi, xd); |
| |
| /* do prediction */ |
| if (xd->mode_info_context->mbmi.ref_frame == INTRA_FRAME) { |
| if (mode != I8X8_PRED) { |
| vp9_build_intra_predictors_mbuv(xd); |
| if (mode != B_PRED) { |
| vp9_build_intra_predictors_mby(xd); |
| } |
| } |
| } else { |
| #ifdef DEC_DEBUG |
| if (dec_debug) |
| printf("Decoding mb: %d %d interp %d\n", |
| xd->mode_info_context->mbmi.mode, tx_size, |
| xd->mode_info_context->mbmi.interp_filter); |
| #endif |
| vp9_build_inter_predictors_mb(xd, mb_row, mb_col); |
| } |
| |
| if (tx_size == TX_16X16) { |
| decode_16x16(pbi, xd, bc); |
| } else if (tx_size == TX_8X8) { |
| decode_8x8(pbi, xd, bc); |
| } else { |
| decode_4x4(pbi, xd, bc); |
| } |
| #ifdef DEC_DEBUG |
| if (dec_debug) { |
| int i, j; |
| printf("\n"); |
| printf("final y\n"); |
| for (i = 0; i < 16; i++) { |
| for (j = 0; j < 16; j++) |
| printf("%3d ", xd->dst.y_buffer[i * xd->dst.y_stride + j]); |
| printf("\n"); |
| } |
| printf("\n"); |
| printf("final u\n"); |
| for (i = 0; i < 8; i++) { |
| for (j = 0; j < 8; j++) |
| printf("%3d ", xd->dst.u_buffer[i * xd->dst.uv_stride + j]); |
| printf("\n"); |
| } |
| printf("\n"); |
| printf("final v\n"); |
| for (i = 0; i < 8; i++) { |
| for (j = 0; j < 8; j++) |
| printf("%3d ", xd->dst.v_buffer[i * xd->dst.uv_stride + j]); |
| printf("\n"); |
| } |
| fflush(stdout); |
| } |
| #endif |
| } |
| |
| |
| static int get_delta_q(vp9_reader *bc, int prev, int *q_update) { |
| int ret_val = 0; |
| |
| if (vp9_read_bit(bc)) { |
| ret_val = vp9_read_literal(bc, 4); |
| |
| if (vp9_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 set_offsets(VP9D_COMP *pbi, int block_size, |
| int mb_row, int mb_col) { |
| VP9_COMMON *const cm = &pbi->common; |
| MACROBLOCKD *const xd = &pbi->mb; |
| const int mis = cm->mode_info_stride; |
| const int idx = mis * mb_row + mb_col; |
| const int dst_fb_idx = cm->new_fb_idx; |
| const int recon_y_stride = cm->yv12_fb[dst_fb_idx].y_stride; |
| const int recon_uv_stride = cm->yv12_fb[dst_fb_idx].uv_stride; |
| const int recon_yoffset = mb_row * 16 * recon_y_stride + 16 * mb_col; |
| const int recon_uvoffset = mb_row * 8 * recon_uv_stride + 8 * mb_col; |
| |
| xd->mode_info_context = cm->mi + idx; |
| xd->mode_info_context->mbmi.sb_type = block_size >> 5; |
| xd->prev_mode_info_context = cm->prev_mi + idx; |
| xd->above_context = cm->above_context + mb_col; |
| xd->left_context = cm->left_context + (mb_row & 3); |
| |
| /* 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 |
| */ |
| block_size >>= 4; // in mb units |
| |
| set_mb_row(cm, xd, mb_row, block_size); |
| set_mb_col(cm, xd, mb_col, block_size); |
| |
| xd->dst.y_buffer = cm->yv12_fb[dst_fb_idx].y_buffer + recon_yoffset; |
| xd->dst.u_buffer = cm->yv12_fb[dst_fb_idx].u_buffer + recon_uvoffset; |
| xd->dst.v_buffer = cm->yv12_fb[dst_fb_idx].v_buffer + recon_uvoffset; |
| } |
| |
| static void set_refs(VP9D_COMP *pbi, int block_size, |
| int mb_row, int mb_col) { |
| VP9_COMMON *const cm = &pbi->common; |
| MACROBLOCKD *const xd = &pbi->mb; |
| MODE_INFO *mi = xd->mode_info_context; |
| MB_MODE_INFO *const mbmi = &mi->mbmi; |
| |
| if (mbmi->ref_frame > INTRA_FRAME) { |
| int ref_fb_idx; |
| |
| /* Select the appropriate reference frame for this MB */ |
| ref_fb_idx = cm->active_ref_idx[mbmi->ref_frame - 1]; |
| xd->scale_factor[0] = cm->active_ref_scale[mbmi->ref_frame - 1]; |
| xd->scale_factor_uv[0] = cm->active_ref_scale[mbmi->ref_frame - 1]; |
| setup_pred_block(&xd->pre, &cm->yv12_fb[ref_fb_idx], mb_row, mb_col, |
| &xd->scale_factor[0], &xd->scale_factor_uv[0]); |
| |
| /* propagate errors from reference frames */ |
| xd->corrupted |= cm->yv12_fb[ref_fb_idx].corrupted; |
| |
| if (mbmi->second_ref_frame > INTRA_FRAME) { |
| int second_ref_fb_idx; |
| |
| /* Select the appropriate reference frame for this MB */ |
| second_ref_fb_idx = cm->active_ref_idx[mbmi->second_ref_frame - 1]; |
| |
| setup_pred_block(&xd->second_pre, &cm->yv12_fb[second_ref_fb_idx], |
| mb_row, mb_col, |
| &xd->scale_factor[1], &xd->scale_factor_uv[1]); |
| |
| /* propagate errors from reference frames */ |
| xd->corrupted |= cm->yv12_fb[second_ref_fb_idx].corrupted; |
| } |
| } |
| } |
| |
| /* Decode a row of Superblocks (2x2 region of MBs) */ |
| static void decode_sb_row(VP9D_COMP *pbi, VP9_COMMON *pc, |
| int mb_row, MACROBLOCKD *xd, |
| BOOL_DECODER* const bc) { |
| int mb_col; |
| |
| // For a SB there are 2 left contexts, each pertaining to a MB row within |
| vpx_memset(pc->left_context, 0, sizeof(pc->left_context)); |
| |
| for (mb_col = pc->cur_tile_mb_col_start; |
| mb_col < pc->cur_tile_mb_col_end; mb_col += 4) { |
| if (vp9_read(bc, pc->sb64_coded)) { |
| #ifdef DEC_DEBUG |
| dec_debug = (pc->current_video_frame == 1 && mb_row == 0 && mb_col == 0); |
| if (dec_debug) |
| printf("Debug\n"); |
| #endif |
| set_offsets(pbi, 64, mb_row, mb_col); |
| vp9_decode_mb_mode_mv(pbi, xd, mb_row, mb_col, bc); |
| set_refs(pbi, 64, mb_row, mb_col); |
| decode_superblock64(pbi, xd, mb_row, mb_col, bc); |
| xd->corrupted |= bool_error(bc); |
| } else { |
| int j; |
| |
| for (j = 0; j < 4; j++) { |
| const int x_idx_sb = (j & 1) << 1, y_idx_sb = j & 2; |
| |
| if (mb_row + y_idx_sb >= pc->mb_rows || |
| mb_col + x_idx_sb >= pc->mb_cols) { |
| // MB lies outside frame, skip on to next |
| continue; |
| } |
| |
| xd->sb_index = j; |
| |
| if (vp9_read(bc, pc->sb32_coded)) { |
| #ifdef DEC_DEBUG |
| dec_debug = (pc->current_video_frame == 1 && |
| mb_row + y_idx_sb == 0 && mb_col + x_idx_sb == 0); |
| #endif |
| set_offsets(pbi, 32, mb_row + y_idx_sb, mb_col + x_idx_sb); |
| vp9_decode_mb_mode_mv(pbi, |
| xd, mb_row + y_idx_sb, mb_col + x_idx_sb, bc); |
| set_refs(pbi, 32, mb_row + y_idx_sb, mb_col + x_idx_sb); |
| decode_superblock32(pbi, |
| xd, mb_row + y_idx_sb, mb_col + x_idx_sb, bc); |
| xd->corrupted |= bool_error(bc); |
| } else { |
| int i; |
| |
| // Process the 4 MBs within the SB in the order: |
| // top-left, top-right, bottom-left, bottom-right |
| for (i = 0; i < 4; i++) { |
| const int x_idx = x_idx_sb + (i & 1), y_idx = y_idx_sb + (i >> 1); |
| |
| if (mb_row + y_idx >= pc->mb_rows || |
| mb_col + x_idx >= pc->mb_cols) { |
| // MB lies outside frame, skip on to next |
| continue; |
| } |
| #ifdef DEC_DEBUG |
| dec_debug = (pc->current_video_frame == 1 && |
| mb_row + y_idx == 0 && mb_col + x_idx == 0); |
| #endif |
| |
| set_offsets(pbi, 16, mb_row + y_idx, mb_col + x_idx); |
| xd->mb_index = i; |
| vp9_decode_mb_mode_mv(pbi, xd, mb_row + y_idx, mb_col + x_idx, bc); |
| set_refs(pbi, 16, mb_row + y_idx, mb_col + x_idx); |
| decode_macroblock(pbi, xd, mb_row + y_idx, mb_col + x_idx, bc); |
| |
| /* check if the boolean decoder has suffered an error */ |
| xd->corrupted |= bool_error(bc); |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| static unsigned int read_partition_size(const unsigned char *cx_size) { |
| const unsigned int size = |
| cx_size[0] + (cx_size[1] << 8) + (cx_size[2] << 16); |
| return size; |
| } |
| |
| static int read_is_valid(const unsigned char *start, |
| size_t len, |
| const unsigned char *end) { |
| return start + len > start && start + len <= end; |
| } |
| |
| |
| static void setup_token_decoder(VP9D_COMP *pbi, |
| const unsigned char *cx_data, |
| BOOL_DECODER* const bool_decoder) { |
| VP9_COMMON *pc = &pbi->common; |
| const unsigned char *user_data_end = pbi->Source + pbi->source_sz; |
| const unsigned char *partition; |
| |
| ptrdiff_t partition_size; |
| ptrdiff_t bytes_left; |
| |
| // Set up pointers to token partition |
| partition = cx_data; |
| bytes_left = user_data_end - partition; |
| partition_size = 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(partition, partition_size, user_data_end)) { |
| vpx_internal_error(&pc->error, VPX_CODEC_CORRUPT_FRAME, |
| "Truncated packet or corrupt partition " |
| "%d length", 1); |
| } |
| |
| if (vp9_start_decode(bool_decoder, |
| partition, (unsigned int)partition_size)) |
| vpx_internal_error(&pc->error, VPX_CODEC_MEM_ERROR, |
| "Failed to allocate bool decoder %d", 1); |
| } |
| |
| static void init_frame(VP9D_COMP *pbi) { |
| VP9_COMMON *const pc = &pbi->common; |
| MACROBLOCKD *const xd = &pbi->mb; |
| |
| if (pc->frame_type == KEY_FRAME) { |
| vp9_setup_past_independence(pc, xd); |
| /* All buffers are implicitly updated on key frames. */ |
| pbi->refresh_frame_flags = (1 << NUM_REF_FRAMES) - 1; |
| } else if (pc->error_resilient_mode) { |
| vp9_setup_past_independence(pc, xd); |
| } |
| |
| if (pc->frame_type != KEY_FRAME) { |
| if (!pc->use_bilinear_mc_filter) |
| pc->mcomp_filter_type = EIGHTTAP; |
| else |
| pc->mcomp_filter_type = BILINEAR; |
| |
| /* To enable choice of different interpolation filters */ |
| vp9_setup_interp_filters(xd, pc->mcomp_filter_type, pc); |
| } |
| |
| xd->mode_info_context = pc->mi; |
| xd->prev_mode_info_context = pc->prev_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; |
| } |
| |
| #if CONFIG_CODE_NONZEROCOUNT |
| static void read_nzc_probs_common(VP9_COMMON *cm, |
| BOOL_DECODER* const bc, |
| int block_size) { |
| int c, r, b, t; |
| int tokens, nodes; |
| vp9_prob *nzc_probs; |
| vp9_prob upd; |
| |
| if (!vp9_read_bit(bc)) return; |
| |
| if (block_size == 32) { |
| tokens = NZC32X32_TOKENS; |
| nzc_probs = cm->fc.nzc_probs_32x32[0][0][0]; |
| upd = NZC_UPDATE_PROB_32X32; |
| } else if (block_size == 16) { |
| tokens = NZC16X16_TOKENS; |
| nzc_probs = cm->fc.nzc_probs_16x16[0][0][0]; |
| upd = NZC_UPDATE_PROB_16X16; |
| } else if (block_size == 8) { |
| tokens = NZC8X8_TOKENS; |
| nzc_probs = cm->fc.nzc_probs_8x8[0][0][0]; |
| upd = NZC_UPDATE_PROB_8X8; |
| } else { |
| tokens = NZC4X4_TOKENS; |
| nzc_probs = cm->fc.nzc_probs_4x4[0][0][0]; |
| upd = NZC_UPDATE_PROB_4X4; |
| } |
| nodes = tokens - 1; |
| for (c = 0; c < MAX_NZC_CONTEXTS; ++c) { |
| for (r = 0; r < REF_TYPES; ++r) { |
| for (b = 0; b < BLOCK_TYPES; ++b) { |
| int offset = c * REF_TYPES * BLOCK_TYPES + r * BLOCK_TYPES + b; |
| int offset_nodes = offset * nodes; |
| for (t = 0; t < nodes; ++t) { |
| vp9_prob *p = &nzc_probs[offset_nodes + t]; |
| if (vp9_read(bc, upd)) { |
| *p = read_prob_diff_update(bc, *p); |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| static void read_nzc_probs(VP9_COMMON *cm, |
| BOOL_DECODER* const bc) { |
| read_nzc_probs_common(cm, bc, 4); |
| if (cm->txfm_mode != ONLY_4X4) |
| read_nzc_probs_common(cm, bc, 8); |
| if (cm->txfm_mode > ALLOW_8X8) |
| read_nzc_probs_common(cm, bc, 16); |
| if (cm->txfm_mode > ALLOW_16X16) |
| read_nzc_probs_common(cm, bc, 32); |
| } |
| #endif // CONFIG_CODE_NONZEROCOUNT |
| |
| static void read_coef_probs_common(BOOL_DECODER* const bc, |
| vp9_coeff_probs *coef_probs, |
| int block_types) { |
| int i, j, k, l, m; |
| |
| if (vp9_read_bit(bc)) { |
| for (i = 0; i < block_types; i++) { |
| for (j = 0; j < REF_TYPES; j++) { |
| for (k = 0; k < COEF_BANDS; k++) { |
| for (l = 0; l < PREV_COEF_CONTEXTS; l++) { |
| if (l >= 3 && k == 0) |
| continue; |
| for (m = CONFIG_CODE_NONZEROCOUNT; m < ENTROPY_NODES; m++) { |
| vp9_prob *const p = coef_probs[i][j][k][l] + m; |
| |
| if (vp9_read(bc, COEF_UPDATE_PROB)) { |
| *p = read_prob_diff_update(bc, *p); |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| static void read_coef_probs(VP9D_COMP *pbi, BOOL_DECODER* const bc) { |
| VP9_COMMON *const pc = &pbi->common; |
| |
| read_coef_probs_common(bc, pc->fc.coef_probs_4x4, BLOCK_TYPES); |
| |
| if (pbi->common.txfm_mode != ONLY_4X4) { |
| read_coef_probs_common(bc, pc->fc.coef_probs_8x8, BLOCK_TYPES); |
| } |
| if (pbi->common.txfm_mode > ALLOW_8X8) { |
| read_coef_probs_common(bc, pc->fc.coef_probs_16x16, BLOCK_TYPES); |
| } |
| if (pbi->common.txfm_mode > ALLOW_16X16) { |
| read_coef_probs_common(bc, pc->fc.coef_probs_32x32, BLOCK_TYPES); |
| } |
| } |
| |
| static void update_frame_size(VP9D_COMP *pbi) { |
| VP9_COMMON *cm = &pbi->common; |
| |
| /* our internal buffers are always multiples of 16 */ |
| int width = (cm->Width + 15) & ~15; |
| int height = (cm->Height + 15) & ~15; |
| |
| cm->mb_rows = height >> 4; |
| cm->mb_cols = width >> 4; |
| cm->MBs = cm->mb_rows * cm->mb_cols; |
| cm->mode_info_stride = cm->mb_cols + 1; |
| memset(cm->mip, 0, |
| (cm->mb_cols + 1) * (cm->mb_rows + 1) * sizeof(MODE_INFO)); |
| vp9_update_mode_info_border(cm, cm->mip); |
| |
| cm->mi = cm->mip + cm->mode_info_stride + 1; |
| cm->prev_mi = cm->prev_mip + cm->mode_info_stride + 1; |
| vp9_update_mode_info_in_image(cm, cm->mi); |
| } |
| |
| int vp9_decode_frame(VP9D_COMP *pbi, const unsigned char **p_data_end) { |
| BOOL_DECODER header_bc, residual_bc; |
| VP9_COMMON *const pc = &pbi->common; |
| MACROBLOCKD *const xd = &pbi->mb; |
| const unsigned char *data = (const unsigned char *)pbi->Source; |
| const unsigned char *data_end = data + pbi->source_sz; |
| ptrdiff_t first_partition_length_in_bytes = 0; |
| |
| int mb_row; |
| int i, j; |
| int corrupt_tokens = 0; |
| |
| // printf("Decoding frame %d\n", pc->current_video_frame); |
| /* start with no corruption of current frame */ |
| xd->corrupted = 0; |
| pc->yv12_fb[pc->new_fb_idx].corrupted = 0; |
| |
| if (data_end - data < 3) { |
| vpx_internal_error(&pc->error, VPX_CODEC_CORRUPT_FRAME, "Truncated packet"); |
| } else { |
| pc->last_frame_type = pc->frame_type; |
| pc->frame_type = (FRAME_TYPE)(data[0] & 1); |
| pc->version = (data[0] >> 1) & 7; |
| pc->show_frame = (data[0] >> 4) & 1; |
| first_partition_length_in_bytes = |
| (data[0] | (data[1] << 8) | (data[2] << 16)) >> 5; |
| |
| if ((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; |
| |
| vp9_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 (data + 3 < data_end) { |
| if (data[0] != 0x9d || data[1] != 0x01 || data[2] != 0x2a) |
| vpx_internal_error(&pc->error, VPX_CODEC_UNSUP_BITSTREAM, |
| "Invalid frame sync code"); |
| } |
| data += 3; |
| } |
| { |
| const int width = pc->Width; |
| const int height = pc->Height; |
| |
| /* 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 (data + 5 < data_end) { |
| pc->Width = (data[0] | (data[1] << 8)); |
| pc->Height = (data[2] | (data[3] << 8)); |
| |
| pc->horiz_scale = data[4] >> 4; |
| pc->vert_scale = data[4] & 0x0F; |
| } |
| data += 5; |
| |
| if (width != pc->Width || height != pc->Height) { |
| if (pc->Width <= 0) { |
| pc->Width = width; |
| vpx_internal_error(&pc->error, VPX_CODEC_CORRUPT_FRAME, |
| "Invalid frame width"); |
| } |
| |
| if (pc->Height <= 0) { |
| pc->Height = height; |
| vpx_internal_error(&pc->error, VPX_CODEC_CORRUPT_FRAME, |
| "Invalid frame height"); |
| } |
| |
| if (!pbi->initial_width || !pbi->initial_height) { |
| if (vp9_alloc_frame_buffers(pc, pc->Width, pc->Height)) |
| vpx_internal_error(&pc->error, VPX_CODEC_MEM_ERROR, |
| "Failed to allocate frame buffers"); |
| pbi->initial_width = pc->Width; |
| pbi->initial_height = pc->Height; |
| } |
| |
| if (pc->Width > pbi->initial_width) { |
| vpx_internal_error(&pc->error, VPX_CODEC_CORRUPT_FRAME, |
| "Frame width too large"); |
| } |
| |
| if (pc->Height > pbi->initial_height) { |
| vpx_internal_error(&pc->error, VPX_CODEC_CORRUPT_FRAME, |
| "Frame height too large"); |
| } |
| |
| update_frame_size(pbi); |
| } |
| } |
| } |
| |
| if ((!pbi->decoded_key_frame && pc->frame_type != KEY_FRAME) || |
| pc->Width == 0 || pc->Height == 0) { |
| return -1; |
| } |
| |
| init_frame(pbi); |
| |
| /* Reset the frame pointers to the current frame size */ |
| vp8_yv12_realloc_frame_buffer(&pc->yv12_fb[pc->new_fb_idx], |
| pc->mb_cols * 16, pc->mb_rows * 16, |
| VP9BORDERINPIXELS); |
| |
| if (vp9_start_decode(&header_bc, data, |
| (unsigned int)first_partition_length_in_bytes)) |
| vpx_internal_error(&pc->error, VPX_CODEC_MEM_ERROR, |
| "Failed to allocate bool decoder 0"); |
| pc->clr_type = (YUV_TYPE)vp9_read_bit(&header_bc); |
| pc->clamp_type = (CLAMP_TYPE)vp9_read_bit(&header_bc); |
| |
| pc->error_resilient_mode = vp9_read_bit(&header_bc); |
| /* Is segmentation enabled */ |
| xd->segmentation_enabled = (unsigned char)vp9_read_bit(&header_bc); |
| |
| if (xd->segmentation_enabled) { |
| // Read whether or not the segmentation map is being explicitly |
| // updated this frame. |
| xd->update_mb_segmentation_map = (unsigned char)vp9_read_bit(&header_bc); |
| |
| // If so what method will be used. |
| if (xd->update_mb_segmentation_map) { |
| // Which macro block level features are enabled |
| |
| // Read the probs used to decode the segment id for each macro |
| // block. |
| for (i = 0; i < MB_FEATURE_TREE_PROBS; i++) { |
| xd->mb_segment_tree_probs[i] = vp9_read_bit(&header_bc) ? |
| (vp9_prob)vp9_read_literal(&header_bc, 8) : 255; |
| } |
| |
| // Read the prediction probs needed to decode the segment id |
| pc->temporal_update = (unsigned char)vp9_read_bit(&header_bc); |
| for (i = 0; i < PREDICTION_PROBS; i++) { |
| if (pc->temporal_update) { |
| pc->segment_pred_probs[i] = vp9_read_bit(&header_bc) ? |
| (vp9_prob)vp9_read_literal(&header_bc, 8) : 255; |
| } else { |
| pc->segment_pred_probs[i] = 255; |
| } |
| } |
| |
| if (pc->temporal_update) { |
| int count[4]; |
| const vp9_prob *p = xd->mb_segment_tree_probs; |
| vp9_prob *p_mod = xd->mb_segment_mispred_tree_probs; |
| |
| count[0] = p[0] * p[1]; |
| count[1] = p[0] * (256 - p[1]); |
| count[2] = (256 - p[0]) * p[2]; |
| count[3] = (256 - p[0]) * (256 - p[2]); |
| |
| p_mod[0] = get_binary_prob(count[1], count[2] + count[3]); |
| p_mod[1] = get_binary_prob(count[0], count[2] + count[3]); |
| p_mod[2] = get_binary_prob(count[0] + count[1], count[3]); |
| p_mod[3] = get_binary_prob(count[0] + count[1], count[2]); |
| } |
| } |
| // Is the segment data being updated |
| xd->update_mb_segmentation_data = (unsigned char)vp9_read_bit(&header_bc); |
| |
| if (xd->update_mb_segmentation_data) { |
| int data; |
| |
| xd->mb_segment_abs_delta = (unsigned char)vp9_read_bit(&header_bc); |
| |
| vp9_clearall_segfeatures(xd); |
| |
| // For each segmentation... |
| for (i = 0; i < MAX_MB_SEGMENTS; i++) { |
| // For each of the segments features... |
| for (j = 0; j < SEG_LVL_MAX; j++) { |
| // Is the feature enabled |
| if (vp9_read_bit(&header_bc)) { |
| // Update the feature data and mask |
| vp9_enable_segfeature(xd, i, j); |
| |
| data = vp9_decode_unsigned_max(&header_bc, |
| vp9_seg_feature_data_max(j)); |
| |
| // Is the segment data signed.. |
| if (vp9_is_segfeature_signed(j)) { |
| if (vp9_read_bit(&header_bc)) |
| data = -data; |
| } |
| } else |
| data = 0; |
| |
| vp9_set_segdata(xd, i, j, data); |
| } |
| } |
| } |
| } |
| |
| // Read common prediction model status flag probability updates for the |
| // reference frame |
| if (pc->frame_type == KEY_FRAME) { |
| // Set the prediction probabilities to defaults |
| pc->ref_pred_probs[0] = 120; |
| pc->ref_pred_probs[1] = 80; |
| pc->ref_pred_probs[2] = 40; |
| |
| } else { |
| for (i = 0; i < PREDICTION_PROBS; i++) { |
| if (vp9_read_bit(&header_bc)) |
| pc->ref_pred_probs[i] = (vp9_prob)vp9_read_literal(&header_bc, 8); |
| } |
| } |
| |
| pc->sb64_coded = vp9_read_literal(&header_bc, 8); |
| pc->sb32_coded = vp9_read_literal(&header_bc, 8); |
| xd->lossless = vp9_read_bit(&header_bc); |
| if (xd->lossless) { |
| pc->txfm_mode = ONLY_4X4; |
| } else { |
| /* Read the loop filter level and type */ |
| pc->txfm_mode = vp9_read_literal(&header_bc, 2); |
| if (pc->txfm_mode == 3) |
| pc->txfm_mode += vp9_read_bit(&header_bc); |
| if (pc->txfm_mode == TX_MODE_SELECT) { |
| pc->prob_tx[0] = vp9_read_literal(&header_bc, 8); |
| pc->prob_tx[1] = vp9_read_literal(&header_bc, 8); |
| pc->prob_tx[2] = vp9_read_literal(&header_bc, 8); |
| } |
| } |
| pc->filter_type = (LOOPFILTERTYPE) vp9_read_bit(&header_bc); |
| pc->filter_level = vp9_read_literal(&header_bc, 6); |
| pc->sharpness_level = vp9_read_literal(&header_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)vp9_read_bit(&header_bc); |
| |
| if (xd->mode_ref_lf_delta_enabled) { |
| /* Do the deltas need to be updated */ |
| xd->mode_ref_lf_delta_update = (unsigned char)vp9_read_bit(&header_bc); |
| |
| if (xd->mode_ref_lf_delta_update) { |
| /* Send update */ |
| for (i = 0; i < MAX_REF_LF_DELTAS; i++) { |
| if (vp9_read_bit(&header_bc)) { |
| /*sign = vp9_read_bit( &header_bc );*/ |
| xd->ref_lf_deltas[i] = (signed char)vp9_read_literal(&header_bc, 6); |
| |
| if (vp9_read_bit(&header_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 (vp9_read_bit(&header_bc)) { |
| /*sign = vp9_read_bit( &header_bc );*/ |
| xd->mode_lf_deltas[i] = (signed char)vp9_read_literal(&header_bc, 6); |
| |
| if (vp9_read_bit(&header_bc)) /* Apply sign */ |
| xd->mode_lf_deltas[i] = xd->mode_lf_deltas[i] * -1; |
| } |
| } |
| } |
| } |
| |
| // Dummy read for now |
| vp9_read_literal(&header_bc, 2); |
| |
| /* Read the default quantizers. */ |
| { |
| int q_update = 0; |
| pc->base_qindex = vp9_read_literal(&header_bc, QINDEX_BITS); |
| |
| /* AC 1st order Q = default */ |
| pc->y1dc_delta_q = get_delta_q(&header_bc, pc->y1dc_delta_q, &q_update); |
| pc->uvdc_delta_q = get_delta_q(&header_bc, pc->uvdc_delta_q, &q_update); |
| pc->uvac_delta_q = get_delta_q(&header_bc, pc->uvac_delta_q, &q_update); |
| |
| if (q_update) |
| vp9_init_de_quantizer(pbi); |
| |
| /* MB level dequantizer setup */ |
| 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) { |
| pc->active_ref_idx[0] = pc->new_fb_idx; |
| pc->active_ref_idx[1] = pc->new_fb_idx; |
| pc->active_ref_idx[2] = pc->new_fb_idx; |
| } else { |
| /* Should the GF or ARF be updated from the current frame */ |
| pbi->refresh_frame_flags = vp9_read_literal(&header_bc, NUM_REF_FRAMES); |
| |
| /* Select active reference frames */ |
| for (i = 0; i < 3; i++) { |
| int ref_frame_num = vp9_read_literal(&header_bc, NUM_REF_FRAMES_LG2); |
| |
| pc->active_ref_idx[i] = pc->ref_frame_map[ref_frame_num]; |
| } |
| |
| pc->ref_frame_sign_bias[GOLDEN_FRAME] = vp9_read_bit(&header_bc); |
| pc->ref_frame_sign_bias[ALTREF_FRAME] = vp9_read_bit(&header_bc); |
| |
| /* Is high precision mv allowed */ |
| xd->allow_high_precision_mv = (unsigned char)vp9_read_bit(&header_bc); |
| // Read the type of subpel filter to use |
| if (vp9_read_bit(&header_bc)) { |
| pc->mcomp_filter_type = SWITCHABLE; |
| } else { |
| pc->mcomp_filter_type = vp9_read_literal(&header_bc, 2); |
| } |
| #if CONFIG_COMP_INTERINTRA_PRED |
| pc->use_interintra = vp9_read_bit(&header_bc); |
| #endif |
| /* To enable choice of different interploation filters */ |
| vp9_setup_interp_filters(xd, pc->mcomp_filter_type, pc); |
| } |
| |
| if (!pc->error_resilient_mode) { |
| pc->refresh_entropy_probs = vp9_read_bit(&header_bc); |
| pc->frame_parallel_decoding_mode = vp9_read_bit(&header_bc); |
| } else { |
| pc->refresh_entropy_probs = 0; |
| pc->frame_parallel_decoding_mode = 1; |
| } |
| pc->frame_context_idx = vp9_read_literal(&header_bc, NUM_FRAME_CONTEXTS_LG2); |
| vpx_memcpy(&pc->fc, &pc->frame_contexts[pc->frame_context_idx], |
| sizeof(pc->fc)); |
| |
| // Read inter mode probability context updates |
| if (pc->frame_type != KEY_FRAME) { |
| int i, j; |
| for (i = 0; i < INTER_MODE_CONTEXTS; i++) { |
| for (j = 0; j < 4; j++) { |
| if (vp9_read(&header_bc, 252)) { |
| pc->fc.vp9_mode_contexts[i][j] = |
| (vp9_prob)vp9_read_literal(&header_bc, 8); |
| } |
| } |
| } |
| } |
| |
| #if CONFIG_NEW_MVREF |
| // If Key frame reset mv ref id probabilities to defaults |
| if (pc->frame_type != KEY_FRAME) { |
| // Read any mv_ref index probability updates |
| int i, j; |
| |
| for (i = 0; i < MAX_REF_FRAMES; ++i) { |
| // Skip the dummy entry for intra ref frame. |
| if (i == INTRA_FRAME) { |
| continue; |
| } |
| |
| // Read any updates to probabilities |
| for (j = 0; j < MAX_MV_REF_CANDIDATES - 1; ++j) { |
| if (vp9_read(&header_bc, VP9_MVREF_UPDATE_PROB)) { |
| xd->mb_mv_ref_probs[i][j] = |
| (vp9_prob)vp9_read_literal(&header_bc, 8); |
| } |
| } |
| } |
| } |
| #endif |
| |
| if (0) { |
| FILE *z = fopen("decodestats.stt", "a"); |
| fprintf(z, "%6d F:%d,R:%d,Q:%d\n", |
| pc->current_video_frame, |
| pc->frame_type, |
| pbi->refresh_frame_flags, |
| pc->base_qindex); |
| fclose(z); |
| } |
| |
| vp9_copy(pbi->common.fc.pre_coef_probs_4x4, |
| pbi->common.fc.coef_probs_4x4); |
| vp9_copy(pbi->common.fc.pre_coef_probs_8x8, |
| pbi->common.fc.coef_probs_8x8); |
| vp9_copy(pbi->common.fc.pre_coef_probs_16x16, |
| pbi->common.fc.coef_probs_16x16); |
| vp9_copy(pbi->common.fc.pre_coef_probs_32x32, |
| pbi->common.fc.coef_probs_32x32); |
| vp9_copy(pbi->common.fc.pre_ymode_prob, pbi->common.fc.ymode_prob); |
| vp9_copy(pbi->common.fc.pre_sb_ymode_prob, pbi->common.fc.sb_ymode_prob); |
| vp9_copy(pbi->common.fc.pre_uv_mode_prob, pbi->common.fc.uv_mode_prob); |
| vp9_copy(pbi->common.fc.pre_bmode_prob, pbi->common.fc.bmode_prob); |
| vp9_copy(pbi->common.fc.pre_i8x8_mode_prob, pbi->common.fc.i8x8_mode_prob); |
| vp9_copy(pbi->common.fc.pre_sub_mv_ref_prob, pbi->common.fc.sub_mv_ref_prob); |
| vp9_copy(pbi->common.fc.pre_mbsplit_prob, pbi->common.fc.mbsplit_prob); |
| #if CONFIG_COMP_INTERINTRA_PRED |
| pbi->common.fc.pre_interintra_prob = pbi->common.fc.interintra_prob; |
| #endif |
| pbi->common.fc.pre_nmvc = pbi->common.fc.nmvc; |
| #if CONFIG_CODE_NONZEROCOUNT |
| vp9_copy(pbi->common.fc.pre_nzc_probs_4x4, |
| pbi->common.fc.nzc_probs_4x4); |
| vp9_copy(pbi->common.fc.pre_nzc_probs_8x8, |
| pbi->common.fc.nzc_probs_8x8); |
| vp9_copy(pbi->common.fc.pre_nzc_probs_16x16, |
| pbi->common.fc.nzc_probs_16x16); |
| vp9_copy(pbi->common.fc.pre_nzc_probs_32x32, |
| pbi->common.fc.nzc_probs_32x32); |
| #endif |
| |
| vp9_zero(pbi->common.fc.coef_counts_4x4); |
| vp9_zero(pbi->common.fc.coef_counts_8x8); |
| vp9_zero(pbi->common.fc.coef_counts_16x16); |
| vp9_zero(pbi->common.fc.coef_counts_32x32); |
| vp9_zero(pbi->common.fc.ymode_counts); |
| vp9_zero(pbi->common.fc.sb_ymode_counts); |
| vp9_zero(pbi->common.fc.uv_mode_counts); |
| vp9_zero(pbi->common.fc.bmode_counts); |
| vp9_zero(pbi->common.fc.i8x8_mode_counts); |
| vp9_zero(pbi->common.fc.sub_mv_ref_counts); |
| vp9_zero(pbi->common.fc.mbsplit_counts); |
| vp9_zero(pbi->common.fc.NMVcount); |
| vp9_zero(pbi->common.fc.mv_ref_ct); |
| #if CONFIG_COMP_INTERINTRA_PRED |
| vp9_zero(pbi->common.fc.interintra_counts); |
| #endif |
| #if CONFIG_CODE_NONZEROCOUNT |
| vp9_zero(pbi->common.fc.nzc_counts_4x4); |
| vp9_zero(pbi->common.fc.nzc_counts_8x8); |
| vp9_zero(pbi->common.fc.nzc_counts_16x16); |
| vp9_zero(pbi->common.fc.nzc_counts_32x32); |
| #endif |
| |
| read_coef_probs(pbi, &header_bc); |
| #if CONFIG_CODE_NONZEROCOUNT |
| read_nzc_probs(&pbi->common, &header_bc); |
| #endif |
| |
| /* Initialize xd pointers. Any reference should do for xd->pre, so use 0. */ |
| vpx_memcpy(&xd->pre, &pc->yv12_fb[pc->active_ref_idx[0]], |
| sizeof(YV12_BUFFER_CONFIG)); |
| vpx_memcpy(&xd->dst, &pc->yv12_fb[pc->new_fb_idx], |
| sizeof(YV12_BUFFER_CONFIG)); |
| |
| // Create the segmentation map structure and set to 0 |
| if (!pc->last_frame_seg_map) |
| CHECK_MEM_ERROR(pc->last_frame_seg_map, |
| vpx_calloc((pc->mb_rows * pc->mb_cols), 1)); |
| |
| /* set up frame new frame for intra coded blocks */ |
| vp9_setup_intra_recon(&pc->yv12_fb[pc->new_fb_idx]); |
| |
| vp9_setup_block_dptrs(xd); |
| |
| vp9_build_block_doffsets(xd); |
| |
| /* clear out the coeff buffer */ |
| vpx_memset(xd->qcoeff, 0, sizeof(xd->qcoeff)); |
| |
| /* Read the mb_no_coeff_skip flag */ |
| pc->mb_no_coeff_skip = (int)vp9_read_bit(&header_bc); |
| |
| vp9_decode_mode_mvs_init(pbi, &header_bc); |
| |
| /* tile info */ |
| { |
| const unsigned char *data_ptr = data + first_partition_length_in_bytes; |
| int tile_row, tile_col, delta_log2_tiles; |
| |
| vp9_get_tile_n_bits(pc, &pc->log2_tile_columns, &delta_log2_tiles); |
| while (delta_log2_tiles--) { |
| if (vp9_read_bit(&header_bc)) { |
| pc->log2_tile_columns++; |
| } else { |
| break; |
| } |
| } |
| pc->log2_tile_rows = vp9_read_bit(&header_bc); |
| if (pc->log2_tile_rows) |
| pc->log2_tile_rows += vp9_read_bit(&header_bc); |
| pc->tile_columns = 1 << pc->log2_tile_columns; |
| pc->tile_rows = 1 << pc->log2_tile_rows; |
| |
| vpx_memset(pc->above_context, 0, |
| sizeof(ENTROPY_CONTEXT_PLANES) * pc->mb_cols); |
| |
| if (pbi->oxcf.inv_tile_order) { |
| const int n_cols = pc->tile_columns; |
| const unsigned char *data_ptr2[4][1 << 6]; |
| BOOL_DECODER UNINITIALIZED_IS_SAFE(bc_bak); |
| |
| // pre-initialize the offsets, we're going to read in inverse order |
| data_ptr2[0][0] = data_ptr; |
| for (tile_row = 0; tile_row < pc->tile_rows; tile_row++) { |
| if (tile_row) { |
| int size = data_ptr2[tile_row - 1][n_cols - 1][0] | |
| (data_ptr2[tile_row - 1][n_cols - 1][1] << 8) | |
| (data_ptr2[tile_row - 1][n_cols - 1][2] << 16) | |
| (data_ptr2[tile_row - 1][n_cols - 1][3] << 24); |
| data_ptr2[tile_row - 1][n_cols - 1] += 4; |
| data_ptr2[tile_row][0] = data_ptr2[tile_row - 1][n_cols - 1] + size; |
| } |
| |
| for (tile_col = 1; tile_col < n_cols; tile_col++) { |
| int size = data_ptr2[tile_row][tile_col - 1][0] | |
| (data_ptr2[tile_row][tile_col - 1][1] << 8) | |
| (data_ptr2[tile_row][tile_col - 1][2] << 16) | |
| (data_ptr2[tile_row][tile_col - 1][3] << 24); |
| data_ptr2[tile_row][tile_col - 1] += 4; |
| data_ptr2[tile_row][tile_col] = |
| data_ptr2[tile_row][tile_col - 1] + size; |
| } |
| } |
| |
| for (tile_row = 0; tile_row < pc->tile_rows; tile_row++) { |
| vp9_get_tile_row_offsets(pc, tile_row); |
| for (tile_col = n_cols - 1; tile_col >= 0; tile_col--) { |
| vp9_get_tile_col_offsets(pc, tile_col); |
| setup_token_decoder(pbi, data_ptr2[tile_row][tile_col], &residual_bc); |
| |
| /* Decode a row of superblocks */ |
| for (mb_row = pc->cur_tile_mb_row_start; |
| mb_row < pc->cur_tile_mb_row_end; mb_row += 4) { |
| decode_sb_row(pbi, pc, mb_row, xd, &residual_bc); |
| } |
| if (tile_row == pc->tile_rows - 1 && tile_col == n_cols - 1) |
| bc_bak = residual_bc; |
| } |
| } |
| residual_bc = bc_bak; |
| } else { |
| for (tile_row = 0; tile_row < pc->tile_rows; tile_row++) { |
| vp9_get_tile_row_offsets(pc, tile_row); |
| for (tile_col = 0; tile_col < pc->tile_columns; tile_col++) { |
| vp9_get_tile_col_offsets(pc, tile_col); |
| |
| if (tile_col < pc->tile_columns - 1 || tile_row < pc->tile_rows - 1) |
| setup_token_decoder(pbi, data_ptr + 4, &residual_bc); |
| else |
| setup_token_decoder(pbi, data_ptr, &residual_bc); |
| |
| /* Decode a row of superblocks */ |
| for (mb_row = pc->cur_tile_mb_row_start; |
| mb_row < pc->cur_tile_mb_row_end; mb_row += 4) { |
| decode_sb_row(pbi, pc, mb_row, xd, &residual_bc); |
| } |
| |
| if (tile_col < pc->tile_columns - 1 || tile_row < pc->tile_rows - 1) { |
| int size = data_ptr[0] | |
| (data_ptr[1] << 8) | |
| (data_ptr[2] << 16) | |
| (data_ptr[3] << 24); |
| data_ptr += 4 + size; |
| } |
| } |
| } |
| } |
| } |
| corrupt_tokens |= xd->corrupted; |
| |
| // keep track of the last coded dimensions |
| pc->last_width = pc->Width; |
| pc->last_height = pc->Height; |
| |
| /* Collect information about decoder corruption. */ |
| /* 1. Check first boolean decoder for errors. */ |
| pc->yv12_fb[pc->new_fb_idx].corrupted = bool_error(&header_bc); |
| /* 2. Check the macroblock information */ |
| pc->yv12_fb[pc->new_fb_idx].corrupted |= corrupt_tokens; |
| |
| if (!pbi->decoded_key_frame) { |
| if (pc->frame_type == KEY_FRAME && |
| !pc->yv12_fb[pc->new_fb_idx].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"); |
| } |
| |
| if (!pc->error_resilient_mode && |
| !pc->frame_parallel_decoding_mode) { |
| vp9_adapt_coef_probs(pc); |
| #if CONFIG_CODE_NONZEROCOUNT |
| vp9_adapt_nzc_probs(pc); |
| #endif |
| } |
| if (pc->frame_type != KEY_FRAME) { |
| if (!pc->error_resilient_mode && |
| !pc->frame_parallel_decoding_mode) { |
| vp9_adapt_mode_probs(pc); |
| vp9_adapt_nmv_probs(pc, xd->allow_high_precision_mv); |
| vp9_adapt_mode_context(&pbi->common); |
| } |
| } |
| |
| if (pc->refresh_entropy_probs) { |
| vpx_memcpy(&pc->frame_contexts[pc->frame_context_idx], &pc->fc, |
| sizeof(pc->fc)); |
| } |
| |
| #ifdef PACKET_TESTING |
| { |
| FILE *f = fopen("decompressor.VP8", "ab"); |
| unsigned int size = residual_bc.pos + header_bc.pos + 8; |
| fwrite((void *) &size, 4, 1, f); |
| fwrite((void *) pbi->Source, size, 1, f); |
| fclose(f); |
| } |
| #endif |
| |
| /* Find the end of the coded buffer */ |
| while (residual_bc.count > CHAR_BIT |
| && residual_bc.count < VP9_BD_VALUE_SIZE) { |
| residual_bc.count -= CHAR_BIT; |
| residual_bc.user_buffer--; |
| } |
| *p_data_end = residual_bc.user_buffer; |
| return 0; |
| } |
