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author | John Koleszar <jkoleszar@google.com> | 2012-11-27 13:59:17 -0800 |
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committer | John Koleszar <jkoleszar@google.com> | 2012-11-27 14:12:30 -0800 |
commit | fcccbcbb395ce4cf31b54ce1245cc28e5e3ef4c1 (patch) | |
tree | 68e128e48e3f5ab1de1c163fa3a12ea47f5d8d51 /vp9/decoder/vp9_decodframe.c | |
parent | 3bf7b131c8ebb6b4d63a8b70d69066dcbc4ed896 (diff) | |
download | libvpx-fcccbcbb395ce4cf31b54ce1245cc28e5e3ef4c1.tar libvpx-fcccbcbb395ce4cf31b54ce1245cc28e5e3ef4c1.tar.gz libvpx-fcccbcbb395ce4cf31b54ce1245cc28e5e3ef4c1.tar.bz2 libvpx-fcccbcbb395ce4cf31b54ce1245cc28e5e3ef4c1.zip |
Add vp9_ prefix to all vp9 files
Support for gyp which doesn't support multiple objects in the same
static library having the same basename.
Change-Id: Ib947eefbaf68f8b177a796d23f875ccdfa6bc9dc
Diffstat (limited to 'vp9/decoder/vp9_decodframe.c')
-rw-r--r-- | vp9/decoder/vp9_decodframe.c | 1462 |
1 files changed, 1462 insertions, 0 deletions
diff --git a/vp9/decoder/vp9_decodframe.c b/vp9/decoder/vp9_decodframe.c new file mode 100644 index 000000000..c08332351 --- /dev/null +++ b/vp9/decoder/vp9_decodframe.c @@ -0,0 +1,1462 @@ +/* + * 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_onyxd_int.h" +#include "vp9/common/vp9_header.h" +#include "vp9/common/vp9_reconintra.h" +#include "vp9/common/vp9_reconintra4x4.h" +#include "vp9/common/vp9_reconinter.h" +#include "vp9/decoder/vp9_decodframe.h" +#include "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/vpxscale.h" +#include "vp9/common/vp9_setupintrarecon.h" + +#include "vp9_decodemv.h" +#include "vp9/common/vp9_extend.h" +#include "vp9/common/vp9_modecont.h" +#include "vpx_mem/vpx_mem.h" +#include "vp9_dboolhuff.h" + +#include "vp9/common/vp9_seg_common.h" +#include "vp9/common/vp9_entropy.h" +#include "vp9_rtcd.h" + +#include <assert.h> +#include <stdio.h> + + +#define COEFCOUNT_TESTING + +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] = (short)vp9_dc_quant(Q, pc->y1dc_delta_q); + pc->Y2dequant[Q][0] = (short)vp9_dc2quant(Q, pc->y2dc_delta_q); + pc->UVdequant[Q][0] = (short)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[i]; + + pc->Y1dequant[Q][rc] = (short)vp9_ac_yquant(Q); + pc->Y2dequant[Q][rc] = (short)vp9_ac2quant(Q, pc->y2ac_delta_q); + pc->UVdequant[Q][rc] = (short)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)) { + /* Abs Value */ + if (xd->mb_segment_abs_delta == SEGMENT_ABSDATA) + QIndex = vp9_get_segdata(xd, segment_id, SEG_LVL_ALT_Q); + + /* Delta Value */ + else { + QIndex = pc->base_qindex + + vp9_get_segdata(xd, segment_id, SEG_LVL_ALT_Q); + QIndex = (QIndex >= 0) ? ((QIndex <= MAXQ) ? QIndex : MAXQ) : 0; /* Clamp to valid range */ + } + } 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]; + } + +#if CONFIG_LOSSLESS + if (!QIndex) { + pbi->mb.inv_xform4x4_1_x8 = vp9_short_inv_walsh4x4_1_x8; + pbi->mb.inv_xform4x4_x8 = vp9_short_inv_walsh4x4_x8; + pbi->mb.inv_walsh4x4_1 = vp9_short_inv_walsh4x4_1_lossless; + pbi->mb.inv_walsh4x4_lossless = vp9_short_inv_walsh4x4_lossless; + pbi->idct_add = vp9_dequant_idct_add_lossless_c; + pbi->dc_idct_add = vp9_dequant_dc_idct_add_lossless_c; + pbi->dc_idct_add_y_block = vp9_dequant_dc_idct_add_y_block_lossless_c; + pbi->idct_add_y_block = vp9_dequant_idct_add_y_block_lossless_c; + pbi->idct_add_uv_block = vp9_dequant_idct_add_uv_block_lossless_c; + } else { + pbi->mb.inv_xform4x4_1_x8 = vp9_short_idct4x4llm_1; + pbi->mb.inv_xform4x4_x8 = vp9_short_idct4x4llm; + pbi->mb.inv_walsh4x4_1 = vp9_short_inv_walsh4x4_1; + pbi->mb.inv_walsh4x4_lossless = vp9_short_inv_walsh4x4; + pbi->idct_add = vp9_dequant_idct_add; + pbi->dc_idct_add = vp9_dequant_dc_idct_add; + pbi->dc_idct_add_y_block = vp9_dequant_dc_idct_add_y_block; + pbi->idct_add_y_block = vp9_dequant_idct_add_y_block; + pbi->idct_add_uv_block = vp9_dequant_idct_add_uv_block; + } +#else + pbi->mb.inv_xform4x4_1_x8 = vp9_short_idct4x4llm_1; + pbi->mb.inv_xform4x4_x8 = vp9_short_idct4x4llm; + pbi->mb.inv_walsh4x4_1 = vp9_short_inv_walsh4x4_1; + pbi->mb.inv_walsh4x4_lossless = vp9_short_inv_walsh4x4; + pbi->idct_add = vp9_dequant_idct_add; + pbi->dc_idct_add = vp9_dequant_dc_idct_add; + pbi->dc_idct_add_y_block = vp9_dequant_dc_idct_add_y_block; + pbi->idct_add_y_block = vp9_dequant_idct_add_y_block; + pbi->idct_add_uv_block = vp9_dequant_idct_add_uv_block; +#endif + + for (i = 16; i < 24; i++) { + xd->block[i].dequant = pc->UVdequant[QIndex]; + } + + xd->block[24].dequant = pc->Y2dequant[QIndex]; + +} + +#if CONFIG_RUNTIME_CPU_DETECT +#define RTCD_VTABLE(x) (&(pbi)->common.rtcd.x) +#else +#define RTCD_VTABLE(x) NULL +#endif + +/* 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) { + if (xd->mode_info_context->mbmi.ref_frame == INTRA_FRAME) { +#if CONFIG_SUPERBLOCKS + if (xd->mode_info_context->mbmi.encoded_as_sb) { + vp9_build_intra_predictors_sbuv_s(xd); + vp9_build_intra_predictors_sby_s(xd); + } else { +#endif + vp9_build_intra_predictors_mbuv_s(xd); + vp9_build_intra_predictors_mby_s(xd); +#if CONFIG_SUPERBLOCKS + } +#endif + } else { +#if CONFIG_SUPERBLOCKS + if (xd->mode_info_context->mbmi.encoded_as_sb) { + 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); + } else { +#endif + vp9_build_1st_inter16x16_predictors_mb(xd, + xd->dst.y_buffer, + xd->dst.u_buffer, + xd->dst.v_buffer, + xd->dst.y_stride, + xd->dst.uv_stride); + + if (xd->mode_info_context->mbmi.second_ref_frame > 0) { + vp9_build_2nd_inter16x16_predictors_mb(xd, + xd->dst.y_buffer, + xd->dst.u_buffer, + xd->dst.v_buffer, + xd->dst.y_stride, + xd->dst.uv_stride); + } +#if CONFIG_COMP_INTERINTRA_PRED + else 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 +#if CONFIG_SUPERBLOCKS + } +#endif + } +} + +#if CONFIG_SUPERBLOCKS +static void decode_superblock(VP9D_COMP *pbi, MACROBLOCKD *xd, + int mb_row, unsigned int mb_col, + BOOL_DECODER* const bc) { + int i, n, eobtotal; + TX_SIZE tx_size = xd->mode_info_context->mbmi.txfm_size; + VP9_COMMON *const pc = &pbi->common; + MODE_INFO *orig_mi = xd->mode_info_context; + + assert(xd->mode_info_context->mbmi.encoded_as_sb); + + // re-initialize macroblock dequantizer before detokenization + if (xd->segmentation_enabled) + mb_init_dequantizer(pbi, xd); + + if (pbi->common.frame_type != KEY_FRAME) + vp9_setup_interp_filters(xd, xd->mode_info_context->mbmi.interp_filter, pc); + + if (xd->mode_info_context->mbmi.mb_skip_coeff) { + vp9_reset_mb_tokens_context(xd); + if (mb_col < pc->mb_cols - 1) + xd->above_context++; + if (mb_row < pc->mb_rows - 1) + xd->left_context++; + vp9_reset_mb_tokens_context(xd); + if (mb_col < pc->mb_cols - 1) + xd->above_context--; + if (mb_row < pc->mb_rows - 1) + xd->left_context--; + + /* Special case: Force the loopfilter to skip when eobtotal and + * mb_skip_coeff are zero. + */ + skip_recon_mb(pbi, xd); + 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); + } + + /* dequantization and idct */ + for (n = 0; n < 4; n++) { + BLOCKD *b = &xd->block[24]; + int x_idx = n & 1, y_idx = n >> 1; + + if (mb_col + x_idx >= pc->mb_cols || mb_row + y_idx >= pc->mb_rows) + continue; + + xd->above_context = pc->above_context + mb_col + x_idx; + xd->left_context = pc->left_context + y_idx; + xd->mode_info_context = orig_mi + x_idx + y_idx * pc->mode_info_stride; + for (i = 0; i < 25; i++) { + xd->block[i].eob = 0; + xd->eobs[i] = 0; + } + + eobtotal = vp9_decode_mb_tokens(pbi, xd, bc); + if (eobtotal == 0) { // skip loopfilter + xd->mode_info_context->mbmi.mb_skip_coeff = 1; + continue; + } + + if (tx_size == TX_16X16) { + vp9_dequant_idct_add_16x16(xd->qcoeff, 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[0]); + vp9_dequant_idct_add_uv_block_8x8_inplace_c(xd->qcoeff + 16 * 16, + xd->block[16].dequant, + xd->dst.u_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->eobs + 16, xd); + } else if (tx_size == TX_8X8) { + vp9_dequantize_b_2x2(b); + vp9_short_ihaar2x2(&b->dqcoeff[0], b->diff, 8); + ((int *)b->qcoeff)[0] = 0; // 2nd order block are set to 0 after idct + ((int *)b->qcoeff)[1] = 0; + ((int *)b->qcoeff)[2] = 0; + ((int *)b->qcoeff)[3] = 0; + ((int *)b->qcoeff)[4] = 0; + ((int *)b->qcoeff)[5] = 0; + ((int *)b->qcoeff)[6] = 0; + ((int *)b->qcoeff)[7] = 0; + vp9_dequant_dc_idct_add_y_block_8x8_inplace_c(xd->qcoeff, + xd->block[0].dequant, + xd->dst.y_buffer + y_idx * 16 * xd->dst.y_stride + x_idx * 16, + xd->dst.y_stride, xd->eobs, xd->block[24].diff, xd); + vp9_dequant_idct_add_uv_block_8x8_inplace_c(xd->qcoeff + 16 * 16, + xd->block[16].dequant, + xd->dst.u_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->eobs + 16, xd); + } else { + vp9_dequantize_b(b); + if (xd->eobs[24] > 1) { + vp9_short_inv_walsh4x4(&b->dqcoeff[0], b->diff); + ((int *)b->qcoeff)[0] = 0; + ((int *)b->qcoeff)[1] = 0; + ((int *)b->qcoeff)[2] = 0; + ((int *)b->qcoeff)[3] = 0; + ((int *)b->qcoeff)[4] = 0; + ((int *)b->qcoeff)[5] = 0; + ((int *)b->qcoeff)[6] = 0; + ((int *)b->qcoeff)[7] = 0; + } else { + xd->inv_walsh4x4_1(&b->dqcoeff[0], b->diff); + ((int *)b->qcoeff)[0] = 0; + } + + vp9_dequant_dc_idct_add_y_block_4x4_inplace_c(xd->qcoeff, + xd->block[0].dequant, + xd->dst.y_buffer + y_idx * 16 * xd->dst.y_stride + x_idx * 16, + xd->dst.y_stride, xd->eobs, xd->block[24].diff, xd); + vp9_dequant_idct_add_uv_block_4x4_inplace_c(xd->qcoeff + 16 * 16, + xd->block[16].dequant, + xd->dst.u_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->eobs + 16, xd); + } + } + + xd->above_context = pc->above_context + mb_col; + xd->left_context = pc->left_context; + xd->mode_info_context = orig_mi; +} +#endif + +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 i; + int tx_size; + TX_TYPE tx_type; + +#if CONFIG_SUPERBLOCKS + assert(!xd->mode_info_context->mbmi.encoded_as_sb); +#endif + + // 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)) { + for (i = 0; i < 25; i++) { + xd->block[i].eob = 0; + xd->eobs[i] = 0; + } + 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); + return; + } + + // 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 { + vp9_build_inter_predictors_mb(xd); + } + + /* dequantization and idct */ + 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; + + int idx = (ib & 0x02) ? (ib + 2) : ib; + + short *q = xd->block[idx].qcoeff; + short *dq = xd->block[0].dequant; + unsigned char *pre = xd->block[ib].predictor; + unsigned char *dst = *(xd->block[ib].base_dst) + xd->block[ib].dst; + int stride = xd->dst.y_stride; + + b = &xd->block[ib]; + i8x8mode = b->bmi.as_mode.first; + vp9_intra8x8_predict(b, i8x8mode, b->predictor); + + if (xd->mode_info_context->mbmi.txfm_size == TX_8X8) { + tx_type = get_tx_type(xd, &xd->block[idx]); + if (tx_type != DCT_DCT) { + vp9_ht_dequant_idct_add_8x8_c(tx_type, + q, dq, pre, dst, 16, stride); + } else { + vp9_dequant_idct_add_8x8_c(q, dq, pre, dst, 16, stride, 0, + xd->eobs[idx]); + } + q += 64; + } else { + for (j = 0; j < 4; j++) { + b = &xd->block[ib + iblock[j]]; + vp9_dequant_idct_add(b->qcoeff, b->dequant, b->predictor, + *(b->base_dst) + b->dst, 16, b->dst_stride); + } + } + b = &xd->block[16 + i]; + vp9_intra_uv4x4_predict(b, i8x8mode, b->predictor); + pbi->idct_add(b->qcoeff, b->dequant, b->predictor, + *(b->base_dst) + b->dst, 8, b->dst_stride); + b = &xd->block[20 + i]; + vp9_intra_uv4x4_predict(b, i8x8mode, b->predictor); + pbi->idct_add(b->qcoeff, b->dequant, b->predictor, + *(b->base_dst) + b->dst, 8, b->dst_stride); + } + } else if (mode == B_PRED) { + for (i = 0; i < 16; i++) { + int b_mode; +#if CONFIG_COMP_INTRA_PRED + int b_mode2; +#endif + 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); +#if CONFIG_COMP_INTRA_PRED + b_mode2 = xd->mode_info_context->bmi[i].as_mode.second; + + if (b_mode2 == (B_PREDICTION_MODE)(B_DC_PRED - 1)) { +#endif + vp9_intra4x4_predict(b, b_mode, b->predictor); +#if CONFIG_COMP_INTRA_PRED + } else { + vp9_comp_intra4x4_predict(b, b_mode, b_mode2, b->predictor); + } +#endif + + tx_type = get_tx_type(xd, b); + 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); + } else { + vp9_dequant_idct_add(b->qcoeff, b->dequant, b->predictor, + *(b->base_dst) + b->dst, 16, b->dst_stride); + } + } + if (!xd->mode_info_context->mbmi.mb_skip_coeff) + vp9_decode_mb_tokens_4x4_uv(pbi, xd, bc); + } else if (mode == SPLITMV) { + if (tx_size == TX_8X8) { + vp9_dequant_idct_add_y_block_8x8(xd->qcoeff, xd->block[0].dequant, + xd->predictor, xd->dst.y_buffer, + xd->dst.y_stride, xd->eobs, xd); + } else { + pbi->idct_add_y_block(xd->qcoeff, xd->block[0].dequant, + xd->predictor, xd->dst.y_buffer, + xd->dst.y_stride, xd->eobs); + } + } else { + BLOCKD *b = &xd->block[24]; + + if (tx_size == TX_16X16) { + BLOCKD *bd = &xd->block[0]; + tx_type = get_tx_type(xd, bd); + 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); + } 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]); + } + } else if (tx_size == TX_8X8) { + vp9_dequantize_b_2x2(b); + vp9_short_ihaar2x2(&b->dqcoeff[0], b->diff, 8); + ((int *)b->qcoeff)[0] = 0; // 2nd order block are set to 0 after idct + ((int *)b->qcoeff)[1] = 0; + ((int *)b->qcoeff)[2] = 0; + ((int *)b->qcoeff)[3] = 0; + ((int *)b->qcoeff)[4] = 0; + ((int *)b->qcoeff)[5] = 0; + ((int *)b->qcoeff)[6] = 0; + ((int *)b->qcoeff)[7] = 0; + vp9_dequant_dc_idct_add_y_block_8x8(xd->qcoeff, + xd->block[0].dequant, xd->predictor, xd->dst.y_buffer, + xd->dst.y_stride, xd->eobs, xd->block[24].diff, xd); + } else { + vp9_dequantize_b(b); + if (xd->eobs[24] > 1) { + vp9_short_inv_walsh4x4(&b->dqcoeff[0], b->diff); + ((int *)b->qcoeff)[0] = 0; + ((int *)b->qcoeff)[1] = 0; + ((int *)b->qcoeff)[2] = 0; + ((int *)b->qcoeff)[3] = 0; + ((int *)b->qcoeff)[4] = 0; + ((int *)b->qcoeff)[5] = 0; + ((int *)b->qcoeff)[6] = 0; + ((int *)b->qcoeff)[7] = 0; + } else { + xd->inv_walsh4x4_1(&b->dqcoeff[0], b->diff); + ((int *)b->qcoeff)[0] = 0; + } + + pbi->dc_idct_add_y_block(xd->qcoeff, xd->block[0].dequant, xd->predictor, + xd->dst.y_buffer, xd->dst.y_stride, xd->eobs, + xd->block[24].diff); + } + } + + if ((tx_size == TX_8X8 && + xd->mode_info_context->mbmi.mode != I8X8_PRED && + xd->mode_info_context->mbmi.mode != SPLITMV) + || tx_size == TX_16X16 + ) + 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->eobs + 16, xd); + else if (xd->mode_info_context->mbmi.mode != I8X8_PRED) + pbi->idct_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->eobs + 16); +} + + +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 + +/* Decode a row of Superblocks (2x2 region of MBs) */ +static void +decode_sb_row(VP9D_COMP *pbi, VP9_COMMON *pc, int mbrow, MACROBLOCKD *xd, + BOOL_DECODER* const bc) { + int i; + int sb_col; + int mb_row, mb_col; + int recon_yoffset, recon_uvoffset; + int ref_fb_idx = pc->lst_fb_idx; + int dst_fb_idx = pc->new_fb_idx; + int recon_y_stride = pc->yv12_fb[ref_fb_idx].y_stride; + int recon_uv_stride = pc->yv12_fb[ref_fb_idx].uv_stride; + int row_delta[4] = { 0, +1, 0, -1}; + int col_delta[4] = { +1, -1, +1, +1}; + int sb_cols = (pc->mb_cols + 1) >> 1; + + // 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)); + + mb_row = mbrow; + mb_col = 0; + + for (sb_col = 0; sb_col < sb_cols; sb_col++) { + MODE_INFO *mi = xd->mode_info_context; + +#if CONFIG_SUPERBLOCKS + mi->mbmi.encoded_as_sb = vp9_read(bc, pc->sb_coded); +#endif + + // Process the 4 MBs within the SB in the order: + // top-left, top-right, bottom-left, bottom-right + for (i = 0; i < 4; i++) { + int dy = row_delta[i]; + int dx = col_delta[i]; + int offset_extended = dy * xd->mode_info_stride + dx; + + xd->mb_index = i; + + mi = xd->mode_info_context; + if ((mb_row >= pc->mb_rows) || (mb_col >= pc->mb_cols)) { + // MB lies outside frame, skip on to next + mb_row += dy; + mb_col += dx; + xd->mode_info_context += offset_extended; + xd->prev_mode_info_context += offset_extended; + continue; + } +#if CONFIG_SUPERBLOCKS + if (i) + mi->mbmi.encoded_as_sb = 0; +#endif + + // Set above context pointer + xd->above_context = pc->above_context + mb_col; + xd->left_context = pc->left_context + (i >> 1); + + /* 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_top_edge = -((mb_row * 16)) << 3; + xd->mb_to_left_edge = -((mb_col * 16) << 3); +#if CONFIG_SUPERBLOCKS + if (mi->mbmi.encoded_as_sb) { + xd->mb_to_bottom_edge = ((pc->mb_rows - 2 - mb_row) * 16) << 3; + xd->mb_to_right_edge = ((pc->mb_cols - 2 - mb_col) * 16) << 3; + } else { +#endif + xd->mb_to_bottom_edge = ((pc->mb_rows - 1 - mb_row) * 16) << 3; + xd->mb_to_right_edge = ((pc->mb_cols - 1 - mb_col) * 16) << 3; +#if CONFIG_SUPERBLOCKS + } +#endif + + xd->up_available = (mb_row != 0); + xd->left_available = (mb_col != 0); + + + recon_yoffset = (mb_row * recon_y_stride * 16) + (mb_col * 16); + recon_uvoffset = (mb_row * recon_uv_stride * 8) + (mb_col * 8); + + xd->dst.y_buffer = pc->yv12_fb[dst_fb_idx].y_buffer + recon_yoffset; + xd->dst.u_buffer = pc->yv12_fb[dst_fb_idx].u_buffer + recon_uvoffset; + xd->dst.v_buffer = pc->yv12_fb[dst_fb_idx].v_buffer + recon_uvoffset; + + vp9_decode_mb_mode_mv(pbi, xd, mb_row, mb_col, bc); + + update_blockd_bmi(xd); + + /* Select the appropriate reference frame for this MB */ + if (xd->mode_info_context->mbmi.ref_frame == LAST_FRAME) + ref_fb_idx = pc->lst_fb_idx; + else if (xd->mode_info_context->mbmi.ref_frame == GOLDEN_FRAME) + ref_fb_idx = pc->gld_fb_idx; + else + ref_fb_idx = pc->alt_fb_idx; + + xd->pre.y_buffer = pc->yv12_fb[ref_fb_idx].y_buffer + recon_yoffset; + xd->pre.u_buffer = pc->yv12_fb[ref_fb_idx].u_buffer + recon_uvoffset; + xd->pre.v_buffer = pc->yv12_fb[ref_fb_idx].v_buffer + recon_uvoffset; + + if (xd->mode_info_context->mbmi.second_ref_frame > 0) { + int second_ref_fb_idx; + + /* Select the appropriate reference frame for this MB */ + if (xd->mode_info_context->mbmi.second_ref_frame == LAST_FRAME) + second_ref_fb_idx = pc->lst_fb_idx; + else if (xd->mode_info_context->mbmi.second_ref_frame == + GOLDEN_FRAME) + second_ref_fb_idx = pc->gld_fb_idx; + else + second_ref_fb_idx = pc->alt_fb_idx; + + xd->second_pre.y_buffer = + pc->yv12_fb[second_ref_fb_idx].y_buffer + recon_yoffset; + xd->second_pre.u_buffer = + pc->yv12_fb[second_ref_fb_idx].u_buffer + recon_uvoffset; + xd->second_pre.v_buffer = + pc->yv12_fb[second_ref_fb_idx].v_buffer + recon_uvoffset; + } + + if (xd->mode_info_context->mbmi.ref_frame != INTRA_FRAME) { + /* propagate errors from reference frames */ + xd->corrupted |= pc->yv12_fb[ref_fb_idx].corrupted; + } + +#if CONFIG_SUPERBLOCKS + if (xd->mode_info_context->mbmi.encoded_as_sb) { + if (mb_col < pc->mb_cols - 1) + mi[1] = mi[0]; + if (mb_row < pc->mb_rows - 1) { + mi[pc->mode_info_stride] = mi[0]; + if (mb_col < pc->mb_cols - 1) + mi[pc->mode_info_stride + 1] = mi[0]; + } + } + if (xd->mode_info_context->mbmi.encoded_as_sb) { + decode_superblock(pbi, xd, mb_row, mb_col, bc); + } else { +#endif + vp9_intra_prediction_down_copy(xd); + decode_macroblock(pbi, xd, mb_row, mb_col, bc); +#if CONFIG_SUPERBLOCKS + } +#endif + + /* check if the boolean decoder has suffered an error */ + xd->corrupted |= bool_error(bc); + +#if CONFIG_SUPERBLOCKS + if (mi->mbmi.encoded_as_sb) { + assert(!i); + mb_col += 2; + xd->mode_info_context += 2; + xd->prev_mode_info_context += 2; + break; + } +#endif + + // skip to next MB + xd->mode_info_context += offset_extended; + xd->prev_mode_info_context += offset_extended; + mb_row += dy; + mb_col += dx; + } + } + + /* skip prediction column */ + xd->mode_info_context += 1 - (pc->mb_cols & 0x1) + xd->mode_info_stride; + xd->prev_mode_info_context += 1 - (pc->mb_cols & 0x1) + xd->mode_info_stride; +} + +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) { + /* Various keyframe initializations */ + vp9_init_mv_probs(pc); + + vp9_init_mbmode_probs(pc); + vp9_default_bmode_probs(pc->fc.bmode_prob); + + vp9_default_coef_probs(pc); + vp9_kf_default_bmode_probs(pc->kf_bmode_prob); + + // Reset the segment feature data to the default stats: + // Features disabled, 0, with delta coding (Default state). + vp9_clearall_segfeatures(xd); + + xd->mb_segment_abs_delta = SEGMENT_DELTADATA; + + /* reset the mode ref deltasa for loop filter */ + vpx_memset(xd->ref_lf_deltas, 0, sizeof(xd->ref_lf_deltas)); + vpx_memset(xd->mode_lf_deltas, 0, sizeof(xd->mode_lf_deltas)); + + /* All buffers are implicitly updated on key frames. */ + pc->refresh_golden_frame = 1; + pc->refresh_alt_ref_frame = 1; + pc->copy_buffer_to_gf = 0; + pc->copy_buffer_to_arf = 0; + + /* Note that Golden and Altref modes cannot be used on a key frame so + * ref_frame_sign_bias[] is undefined and meaningless + */ + pc->ref_frame_sign_bias[GOLDEN_FRAME] = 0; + pc->ref_frame_sign_bias[ALTREF_FRAME] = 0; + + vp9_init_mode_contexts(&pbi->common); + vpx_memcpy(&pc->lfc, &pc->fc, sizeof(pc->fc)); + vpx_memcpy(&pc->lfc_a, &pc->fc, sizeof(pc->fc)); + + vpx_memcpy(pbi->common.fc.vp9_mode_contexts, + pbi->common.fc.mode_context, + sizeof(pbi->common.fc.mode_context)); + vpx_memset(pc->prev_mip, 0, + (pc->mb_cols + 1) * (pc->mb_rows + 1)* sizeof(MODE_INFO)); + vpx_memset(pc->mip, 0, + (pc->mb_cols + 1) * (pc->mb_rows + 1)* sizeof(MODE_INFO)); + + vp9_update_mode_info_border(pc, pc->mip); + vp9_update_mode_info_in_image(pc, pc->mi); + + } else { + + 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 0 +static void read_coef_probs2(VP9D_COMP *pbi) { + const vp9_prob grpupd = 192; + int i, j, k, l; + vp9_reader *const bc = &pbi->bc; + VP9_COMMON *const pc = &pbi->common; + for (l = 0; l < ENTROPY_NODES; l++) { + if (vp9_read(bc, grpupd)) { + // printf("Decoding %d\n", l); + for (i = 0; i < BLOCK_TYPES; i++) + for (j = !i; j < COEF_BANDS; j++) + for (k = 0; k < PREV_COEF_CONTEXTS; k++) { + if (k >= 3 && ((i == 0 && j == 1) || + (i > 0 && j == 0))) + continue; + { + vp9_prob *const p = pc->fc.coef_probs [i][j][k] + l; + int u = vp9_read(bc, COEF_UPDATE_PROB); + if (u) *p = read_prob_diff_update(bc, *p); + } + } + } + } + if (pbi->common.txfm_mode == ALLOW_8X8) { + for (l = 0; l < ENTROPY_NODES; l++) { + if (vp9_read(bc, grpupd)) { + for (i = 0; i < BLOCK_TYPES_8X8; i++) + for (j = !i; j < COEF_BANDS; j++) + for (k = 0; k < PREV_COEF_CONTEXTS; k++) { + if (k >= 3 && ((i == 0 && j == 1) || + (i > 0 && j == 0))) + continue; + { + vp9_prob *const p = pc->fc.coef_probs_8x8 [i][j][k] + l; + + int u = vp9_read(bc, COEF_UPDATE_PROB_8X8); + if (u) *p = read_prob_diff_update(bc, *p); + } + } + } + } + } +} +#endif + +static void read_coef_probs_common( + BOOL_DECODER* const bc, + vp9_prob coef_probs[BLOCK_TYPES][COEF_BANDS] + [PREV_COEF_CONTEXTS][ENTROPY_NODES]) { + int i, j, k, l; + + if (vp9_read_bit(bc)) { + for (i = 0; i < BLOCK_TYPES; i++) { + for (j = !i; j < COEF_BANDS; j++) { + /* NB: This j loop starts from 1 on block type i == 0 */ + for (k = 0; k < PREV_COEF_CONTEXTS; k++) { + if (k >= 3 && ((i == 0 && j == 1) || + (i > 0 && j == 0))) + continue; + for (l = 0; l < ENTROPY_NODES; l++) { + vp9_prob *const p = coef_probs[i][j][k] + l; + + 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); + read_coef_probs_common(bc, pc->fc.hybrid_coef_probs); + + if (pbi->common.txfm_mode != ONLY_4X4) { + read_coef_probs_common(bc, pc->fc.coef_probs_8x8); + read_coef_probs_common(bc, pc->fc.hybrid_coef_probs_8x8); + } + if (pbi->common.txfm_mode > ALLOW_8X8) { + read_coef_probs_common(bc, pc->fc.coef_probs_16x16); + read_coef_probs_common(bc, pc->fc.hybrid_coef_probs_16x16); + } +} + +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; + + /* 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) { + const int Width = pc->Width; + const int Height = pc->Height; + + /* 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"); + } + + /* 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 + 6 < data_end) { + pc->Width = (data[3] | (data[4] << 8)) & 0x3fff; + pc->horiz_scale = data[4] >> 6; + pc->Height = (data[5] | (data[6] << 8)) & 0x3fff; + pc->vert_scale = data[6] >> 6; + } + data += 7; + + 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 (vp9_alloc_frame_buffers(pc, pc->Width, pc->Height)) + vpx_internal_error(&pc->error, VPX_CODEC_MEM_ERROR, + "Failed to allocate frame buffers"); + } + } + } + + if ((!pbi->decoded_key_frame && pc->frame_type != KEY_FRAME) || + pc->Width == 0 || pc->Height == 0) { + return -1; + } + + init_frame(pbi); + + 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"); + if (pc->frame_type == KEY_FRAME) { + pc->clr_type = (YUV_TYPE)vp9_read_bit(&header_bc); + pc->clamp_type = (CLAMP_TYPE)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; + } + } + } + // 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 = (signed char)vp9_read_literal( + &header_bc, vp9_seg_feature_data_bits(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); + } + } + +#if CONFIG_SUPERBLOCKS + pc->sb_coded = vp9_read_literal(&header_bc, 8); +#endif + + /* Read the loop filter level and type */ + pc->txfm_mode = vp9_read_literal(&header_bc, 2); + 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->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); + + setup_token_decoder(pbi, data + first_partition_length_in_bytes, + &residual_bc); + + /* Read the default quantizers. */ + { + int Q, q_update; + + Q = vp9_read_literal(&header_bc, QINDEX_BITS); + pc->base_qindex = Q; + q_update = 0; + /* AC 1st order Q = default */ + pc->y1dc_delta_q = get_delta_q(&header_bc, pc->y1dc_delta_q, &q_update); + pc->y2dc_delta_q = get_delta_q(&header_bc, pc->y2dc_delta_q, &q_update); + pc->y2ac_delta_q = get_delta_q(&header_bc, pc->y2ac_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) { + /* Should the GF or ARF be updated from the current frame */ + pc->refresh_golden_frame = vp9_read_bit(&header_bc); + pc->refresh_alt_ref_frame = vp9_read_bit(&header_bc); + + if (pc->refresh_alt_ref_frame) { + vpx_memcpy(&pc->fc, &pc->lfc_a, sizeof(pc->fc)); + vpx_memcpy(pc->fc.vp9_mode_contexts, + pc->fc.mode_context_a, + sizeof(pc->fc.vp9_mode_contexts)); + } else { + vpx_memcpy(&pc->fc, &pc->lfc, sizeof(pc->fc)); + vpx_memcpy(pc->fc.vp9_mode_contexts, + pc->fc.mode_context, + sizeof(pc->fc.vp9_mode_contexts)); + } + + /* Buffer to buffer copy flags. */ + pc->copy_buffer_to_gf = 0; + + if (!pc->refresh_golden_frame) + pc->copy_buffer_to_gf = vp9_read_literal(&header_bc, 2); + + pc->copy_buffer_to_arf = 0; + + if (!pc->refresh_alt_ref_frame) + pc->copy_buffer_to_arf = vp9_read_literal(&header_bc, 2); + + 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); + } + + pc->refresh_entropy_probs = vp9_read_bit(&header_bc); + if (pc->refresh_entropy_probs == 0) { + vpx_memcpy(&pc->lfc, &pc->fc, sizeof(pc->fc)); + } + + pc->refresh_last_frame = (pc->frame_type == KEY_FRAME) + || vp9_read_bit(&header_bc); + + // 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 (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); + } + + vp9_copy(pbi->common.fc.pre_coef_probs, + pbi->common.fc.coef_probs); + vp9_copy(pbi->common.fc.pre_hybrid_coef_probs, + pbi->common.fc.hybrid_coef_probs); + vp9_copy(pbi->common.fc.pre_coef_probs_8x8, + pbi->common.fc.coef_probs_8x8); + vp9_copy(pbi->common.fc.pre_hybrid_coef_probs_8x8, + pbi->common.fc.hybrid_coef_probs_8x8); + vp9_copy(pbi->common.fc.pre_coef_probs_16x16, + pbi->common.fc.coef_probs_16x16); + vp9_copy(pbi->common.fc.pre_hybrid_coef_probs_16x16, + pbi->common.fc.hybrid_coef_probs_16x16); + vp9_copy(pbi->common.fc.pre_ymode_prob, pbi->common.fc.ymode_prob); +#if CONFIG_SUPERBLOCKS + vp9_copy(pbi->common.fc.pre_sb_ymode_prob, pbi->common.fc.sb_ymode_prob); +#endif + 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; + vp9_zero(pbi->common.fc.coef_counts); + vp9_zero(pbi->common.fc.hybrid_coef_counts); + vp9_zero(pbi->common.fc.coef_counts_8x8); + vp9_zero(pbi->common.fc.hybrid_coef_counts_8x8); + vp9_zero(pbi->common.fc.coef_counts_16x16); + vp9_zero(pbi->common.fc.hybrid_coef_counts_16x16); + vp9_zero(pbi->common.fc.ymode_counts); +#if CONFIG_SUPERBLOCKS + vp9_zero(pbi->common.fc.sb_ymode_counts); +#endif + 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 + + read_coef_probs(pbi, &header_bc); + + vpx_memcpy(&xd->pre, &pc->yv12_fb[pc->lst_fb_idx], 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); + + vpx_memset(pc->above_context, 0, sizeof(ENTROPY_CONTEXT_PLANES) * pc->mb_cols); + + // Resset the macroblock mode info context to the start of the list + xd->mode_info_context = pc->mi; + xd->prev_mode_info_context = pc->prev_mi; + + /* Decode a row of superblocks */ + for (mb_row = 0; mb_row < pc->mb_rows; mb_row += 2) { + decode_sb_row(pbi, pc, mb_row, xd, &residual_bc); + } + corrupt_tokens |= xd->corrupted; + + /* 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"); + } + + vp9_adapt_coef_probs(pc); + if (pc->frame_type != KEY_FRAME) { + vp9_adapt_mode_probs(pc); + vp9_adapt_nmv_probs(pc, xd->allow_high_precision_mv); + vp9_update_mode_context(&pbi->common); + } + + /* If this was a kf or Gf note the Q used */ + if ((pc->frame_type == KEY_FRAME) || + pc->refresh_golden_frame || pc->refresh_alt_ref_frame) { + pc->last_kf_gf_q = pc->base_qindex; + } + if (pc->refresh_entropy_probs) { + if (pc->refresh_alt_ref_frame) + vpx_memcpy(&pc->lfc_a, &pc->fc, sizeof(pc->fc)); + else + vpx_memcpy(&pc->lfc, &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 + // printf("Frame %d Done\n", frame_count++); + + /* 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; +} |