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Unified Diff: source/libvpx/vp9/decoder/vp9_decodframe.c

Issue 111463005: libvpx: Pull from upstream (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/deps/third_party/libvpx/
Patch Set: Created 7 years ago
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Index: source/libvpx/vp9/decoder/vp9_decodframe.c
===================================================================
--- source/libvpx/vp9/decoder/vp9_decodframe.c (revision 240950)
+++ source/libvpx/vp9/decoder/vp9_decodframe.c (working copy)
@@ -1,1368 +0,0 @@
-/*
- * Copyright (c) 2010 The WebM project authors. All Rights Reserved.
- *
- * Use of this source code is governed by a BSD-style license
- * that can be found in the LICENSE file in the root of the source
- * tree. An additional intellectual property rights grant can be found
- * in the file PATENTS. All contributing project authors may
- * be found in the AUTHORS file in the root of the source tree.
- */
-
-#include <assert.h>
-
-#include "./vp9_rtcd.h"
-#include "vpx_mem/vpx_mem.h"
-#include "vpx_scale/vpx_scale.h"
-
-#include "vp9/common/vp9_alloccommon.h"
-#include "vp9/common/vp9_common.h"
-#include "vp9/common/vp9_entropy.h"
-#include "vp9/common/vp9_entropymode.h"
-#include "vp9/common/vp9_extend.h"
-#include "vp9/common/vp9_idct.h"
-#include "vp9/common/vp9_pred_common.h"
-#include "vp9/common/vp9_quant_common.h"
-#include "vp9/common/vp9_reconintra.h"
-#include "vp9/common/vp9_reconinter.h"
-#include "vp9/common/vp9_seg_common.h"
-#include "vp9/common/vp9_tile_common.h"
-
-#include "vp9/decoder/vp9_dboolhuff.h"
-#include "vp9/decoder/vp9_decodframe.h"
-#include "vp9/decoder/vp9_detokenize.h"
-#include "vp9/decoder/vp9_decodemv.h"
-#include "vp9/decoder/vp9_dsubexp.h"
-#include "vp9/decoder/vp9_onyxd_int.h"
-#include "vp9/decoder/vp9_read_bit_buffer.h"
-#include "vp9/decoder/vp9_thread.h"
-#include "vp9/decoder/vp9_treereader.h"
-
-typedef struct TileWorkerData {
- VP9_COMMON *cm;
- vp9_reader bit_reader;
- DECLARE_ALIGNED(16, MACROBLOCKD, xd);
-} TileWorkerData;
-
-static int read_be32(const uint8_t *p) {
- return (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3];
-}
-
-static int is_compound_prediction_allowed(const VP9_COMMON *cm) {
- int i;
- for (i = 1; i < ALLOWED_REFS_PER_FRAME; ++i)
- if (cm->ref_frame_sign_bias[i + 1] != cm->ref_frame_sign_bias[1])
- return 1;
-
- return 0;
-}
-
-static void setup_compound_prediction(VP9_COMMON *cm) {
- if (cm->ref_frame_sign_bias[LAST_FRAME] ==
- cm->ref_frame_sign_bias[GOLDEN_FRAME]) {
- cm->comp_fixed_ref = ALTREF_FRAME;
- cm->comp_var_ref[0] = LAST_FRAME;
- cm->comp_var_ref[1] = GOLDEN_FRAME;
- } else if (cm->ref_frame_sign_bias[LAST_FRAME] ==
- cm->ref_frame_sign_bias[ALTREF_FRAME]) {
- cm->comp_fixed_ref = GOLDEN_FRAME;
- cm->comp_var_ref[0] = LAST_FRAME;
- cm->comp_var_ref[1] = ALTREF_FRAME;
- } else {
- cm->comp_fixed_ref = LAST_FRAME;
- cm->comp_var_ref[0] = GOLDEN_FRAME;
- cm->comp_var_ref[1] = ALTREF_FRAME;
- }
-}
-
-// len == 0 is not allowed
-static int read_is_valid(const uint8_t *start, size_t len, const uint8_t *end) {
- return start + len > start && start + len <= end;
-}
-
-static int decode_unsigned_max(struct vp9_read_bit_buffer *rb, int max) {
- const int data = vp9_rb_read_literal(rb, get_unsigned_bits(max));
- return data > max ? max : data;
-}
-
-static TX_MODE read_tx_mode(vp9_reader *r) {
- TX_MODE tx_mode = vp9_read_literal(r, 2);
- if (tx_mode == ALLOW_32X32)
- tx_mode += vp9_read_bit(r);
- return tx_mode;
-}
-
-static void read_tx_probs(struct tx_probs *tx_probs, vp9_reader *r) {
- int i, j;
-
- for (i = 0; i < TX_SIZE_CONTEXTS; ++i)
- for (j = 0; j < TX_SIZES - 3; ++j)
- vp9_diff_update_prob(r, &tx_probs->p8x8[i][j]);
-
- for (i = 0; i < TX_SIZE_CONTEXTS; ++i)
- for (j = 0; j < TX_SIZES - 2; ++j)
- vp9_diff_update_prob(r, &tx_probs->p16x16[i][j]);
-
- for (i = 0; i < TX_SIZE_CONTEXTS; ++i)
- for (j = 0; j < TX_SIZES - 1; ++j)
- vp9_diff_update_prob(r, &tx_probs->p32x32[i][j]);
-}
-
-static void read_switchable_interp_probs(FRAME_CONTEXT *fc, vp9_reader *r) {
- int i, j;
- for (j = 0; j < SWITCHABLE_FILTER_CONTEXTS; ++j)
- for (i = 0; i < SWITCHABLE_FILTERS - 1; ++i)
- vp9_diff_update_prob(r, &fc->switchable_interp_prob[j][i]);
-}
-
-static void read_inter_mode_probs(FRAME_CONTEXT *fc, vp9_reader *r) {
- int i, j;
- for (i = 0; i < INTER_MODE_CONTEXTS; ++i)
- for (j = 0; j < INTER_MODES - 1; ++j)
- vp9_diff_update_prob(r, &fc->inter_mode_probs[i][j]);
-}
-
-static INLINE COMPPREDMODE_TYPE read_comp_pred_mode(vp9_reader *r) {
- COMPPREDMODE_TYPE mode = vp9_read_bit(r);
- if (mode)
- mode += vp9_read_bit(r);
- return mode;
-}
-
-static void read_comp_pred(VP9_COMMON *cm, vp9_reader *r) {
- int i;
-
- const int compound_allowed = is_compound_prediction_allowed(cm);
- cm->comp_pred_mode = compound_allowed ? read_comp_pred_mode(r)
- : SINGLE_PREDICTION_ONLY;
- if (compound_allowed)
- setup_compound_prediction(cm);
-
- if (cm->comp_pred_mode == HYBRID_PREDICTION)
- for (i = 0; i < COMP_INTER_CONTEXTS; i++)
- vp9_diff_update_prob(r, &cm->fc.comp_inter_prob[i]);
-
- if (cm->comp_pred_mode != COMP_PREDICTION_ONLY)
- for (i = 0; i < REF_CONTEXTS; i++) {
- vp9_diff_update_prob(r, &cm->fc.single_ref_prob[i][0]);
- vp9_diff_update_prob(r, &cm->fc.single_ref_prob[i][1]);
- }
-
- if (cm->comp_pred_mode != SINGLE_PREDICTION_ONLY)
- for (i = 0; i < REF_CONTEXTS; i++)
- vp9_diff_update_prob(r, &cm->fc.comp_ref_prob[i]);
-}
-
-static void update_mv(vp9_reader *r, vp9_prob *p) {
- if (vp9_read(r, NMV_UPDATE_PROB))
- *p = (vp9_read_literal(r, 7) << 1) | 1;
-}
-
-static void read_mv_probs(vp9_reader *r, nmv_context *mvc, int allow_hp) {
- int i, j, k;
-
- for (j = 0; j < MV_JOINTS - 1; ++j)
- update_mv(r, &mvc->joints[j]);
-
- for (i = 0; i < 2; ++i) {
- nmv_component *const comp = &mvc->comps[i];
-
- update_mv(r, &comp->sign);
-
- for (j = 0; j < MV_CLASSES - 1; ++j)
- update_mv(r, &comp->classes[j]);
-
- for (j = 0; j < CLASS0_SIZE - 1; ++j)
- update_mv(r, &comp->class0[j]);
-
- for (j = 0; j < MV_OFFSET_BITS; ++j)
- update_mv(r, &comp->bits[j]);
- }
-
- for (i = 0; i < 2; ++i) {
- nmv_component *const comp = &mvc->comps[i];
-
- for (j = 0; j < CLASS0_SIZE; ++j)
- for (k = 0; k < 3; ++k)
- update_mv(r, &comp->class0_fp[j][k]);
-
- for (j = 0; j < 3; ++j)
- update_mv(r, &comp->fp[j]);
- }
-
- if (allow_hp) {
- for (i = 0; i < 2; ++i) {
- update_mv(r, &mvc->comps[i].class0_hp);
- update_mv(r, &mvc->comps[i].hp);
- }
- }
-}
-
-static void setup_plane_dequants(VP9_COMMON *cm, MACROBLOCKD *xd, int q_index) {
- int i;
- xd->plane[0].dequant = cm->y_dequant[q_index];
-
- for (i = 1; i < MAX_MB_PLANE; i++)
- xd->plane[i].dequant = cm->uv_dequant[q_index];
-}
-
-// Allocate storage for each tile column.
-// TODO(jzern): when max_threads <= 1 the same storage could be used for each
-// tile.
-static void alloc_tile_storage(VP9D_COMP *pbi, int tile_cols) {
- VP9_COMMON *const cm = &pbi->common;
- const int aligned_mi_cols = mi_cols_aligned_to_sb(cm->mi_cols);
- int i, tile_col;
-
- CHECK_MEM_ERROR(cm, pbi->mi_streams,
- vpx_realloc(pbi->mi_streams, tile_cols *
- sizeof(*pbi->mi_streams)));
- for (tile_col = 0; tile_col < tile_cols; ++tile_col) {
- TileInfo tile;
-
- vp9_tile_init(&tile, cm, 0, tile_col);
- pbi->mi_streams[tile_col] =
- &cm->mi[cm->mi_rows * tile.mi_col_start];
- }
-
- // 2 contexts per 'mi unit', so that we have one context per 4x4 txfm
- // block where mi unit size is 8x8.
- CHECK_MEM_ERROR(cm, pbi->above_context[0],
- vpx_realloc(pbi->above_context[0],
- sizeof(*pbi->above_context[0]) * MAX_MB_PLANE *
- 2 * aligned_mi_cols));
- for (i = 1; i < MAX_MB_PLANE; ++i) {
- pbi->above_context[i] = pbi->above_context[0] +
- i * sizeof(*pbi->above_context[0]) *
- 2 * aligned_mi_cols;
- }
-
- // This is sized based on the entire frame. Each tile operates within its
- // column bounds.
- CHECK_MEM_ERROR(cm, pbi->above_seg_context,
- vpx_realloc(pbi->above_seg_context,
- sizeof(*pbi->above_seg_context) *
- aligned_mi_cols));
-}
-
-static void inverse_transform_block(MACROBLOCKD* xd, int plane, int block,
- BLOCK_SIZE plane_bsize, TX_SIZE tx_size) {
- struct macroblockd_plane *const pd = &xd->plane[plane];
- int16_t* const qcoeff = BLOCK_OFFSET(pd->qcoeff, block);
- const int stride = pd->dst.stride;
- const int eob = pd->eobs[block];
- if (eob > 0) {
- TX_TYPE tx_type;
- const int raster_block = txfrm_block_to_raster_block(plane_bsize, tx_size,
- block);
- uint8_t* const dst = raster_block_offset_uint8(plane_bsize, raster_block,
- pd->dst.buf, stride);
- switch (tx_size) {
- case TX_4X4:
- tx_type = get_tx_type_4x4(pd->plane_type, xd, raster_block);
- if (tx_type == DCT_DCT)
- xd->itxm_add(qcoeff, dst, stride, eob);
- else
- vp9_iht4x4_add(tx_type, qcoeff, dst, stride, eob);
- break;
- case TX_8X8:
- tx_type = get_tx_type_8x8(pd->plane_type, xd);
- vp9_iht8x8_add(tx_type, qcoeff, dst, stride, eob);
- break;
- case TX_16X16:
- tx_type = get_tx_type_16x16(pd->plane_type, xd);
- vp9_iht16x16_add(tx_type, qcoeff, dst, stride, eob);
- break;
- case TX_32X32:
- tx_type = DCT_DCT;
- vp9_idct32x32_add(qcoeff, dst, stride, eob);
- break;
- default:
- assert(!"Invalid transform size");
- }
-
- if (eob == 1) {
- vpx_memset(qcoeff, 0, 2 * sizeof(qcoeff[0]));
- } else {
- if (tx_type == DCT_DCT && tx_size <= TX_16X16 && eob <= 10)
- vpx_memset(qcoeff, 0, 4 * (4 << tx_size) * sizeof(qcoeff[0]));
- else
- vpx_memset(qcoeff, 0, (16 << (tx_size << 1)) * sizeof(qcoeff[0]));
- }
- }
-}
-
-struct intra_args {
- VP9_COMMON *cm;
- MACROBLOCKD *xd;
- vp9_reader *r;
-};
-
-static void predict_and_reconstruct_intra_block(int plane, int block,
- BLOCK_SIZE plane_bsize,
- TX_SIZE tx_size, void *arg) {
- struct intra_args *const args = arg;
- VP9_COMMON *const cm = args->cm;
- MACROBLOCKD *const xd = args->xd;
-
- struct macroblockd_plane *const pd = &xd->plane[plane];
- MODE_INFO *const mi = xd->mi_8x8[0];
- const int raster_block = txfrm_block_to_raster_block(plane_bsize, tx_size,
- block);
- uint8_t* const dst = raster_block_offset_uint8(plane_bsize, raster_block,
- pd->dst.buf, pd->dst.stride);
- const MB_PREDICTION_MODE mode = (plane == 0)
- ? ((mi->mbmi.sb_type < BLOCK_8X8) ? mi->bmi[raster_block].as_mode
- : mi->mbmi.mode)
- : mi->mbmi.uv_mode;
-
- if (xd->mb_to_right_edge < 0 || xd->mb_to_bottom_edge < 0)
- extend_for_intra(xd, plane_bsize, plane, block, tx_size);
-
- vp9_predict_intra_block(xd, raster_block >> tx_size,
- b_width_log2(plane_bsize), tx_size, mode,
- dst, pd->dst.stride, dst, pd->dst.stride);
-
- if (!mi->mbmi.skip_coeff) {
- vp9_decode_block_tokens(cm, xd, plane, block, plane_bsize, tx_size,
- args->r);
- inverse_transform_block(xd, plane, block, plane_bsize, tx_size);
- }
-}
-
-struct inter_args {
- VP9_COMMON *cm;
- MACROBLOCKD *xd;
- vp9_reader *r;
- int *eobtotal;
-};
-
-static void reconstruct_inter_block(int plane, int block,
- BLOCK_SIZE plane_bsize,
- TX_SIZE tx_size, void *arg) {
- struct inter_args *args = arg;
- VP9_COMMON *const cm = args->cm;
- MACROBLOCKD *const xd = args->xd;
-
- *args->eobtotal += vp9_decode_block_tokens(cm, xd, plane, block,
- plane_bsize, tx_size, args->r);
- inverse_transform_block(xd, plane, block, plane_bsize, tx_size);
-}
-
-static void set_offsets(VP9_COMMON *const cm, MACROBLOCKD *const xd,
- const TileInfo *const tile,
- BLOCK_SIZE bsize, int mi_row, int mi_col) {
- const int bh = num_8x8_blocks_high_lookup[bsize];
- const int bw = num_8x8_blocks_wide_lookup[bsize];
- const int offset = mi_row * cm->mode_info_stride + mi_col;
-
- xd->mode_info_stride = cm->mode_info_stride;
-
- xd->mi_8x8 = cm->mi_grid_visible + offset;
- xd->prev_mi_8x8 = cm->prev_mi_grid_visible + offset;
-
- // we are using the mode info context stream here
- xd->mi_8x8[0] = xd->mi_stream;
- xd->mi_8x8[0]->mbmi.sb_type = bsize;
- ++xd->mi_stream;
-
- // Special case: if prev_mi is NULL, the previous mode info context
- // cannot be used.
- xd->last_mi = cm->prev_mi ? xd->prev_mi_8x8[0] : NULL;
-
- set_skip_context(xd, xd->above_context, xd->left_context, mi_row, mi_col);
-
- // Distance of Mb to the various image edges. These are specified to 8th pel
- // as they are always compared to values that are in 1/8th pel units
- set_mi_row_col(xd, tile, mi_row, bh, mi_col, bw, cm->mi_rows, cm->mi_cols);
-
- setup_dst_planes(xd, get_frame_new_buffer(cm), mi_row, mi_col);
-}
-
-static void set_ref(VP9_COMMON *const cm, MACROBLOCKD *const xd,
- int idx, int mi_row, int mi_col) {
- MB_MODE_INFO *const mbmi = &xd->mi_8x8[0]->mbmi;
- const int ref = mbmi->ref_frame[idx] - LAST_FRAME;
- const YV12_BUFFER_CONFIG *cfg = get_frame_ref_buffer(cm, ref);
- const struct scale_factors_common *sfc = &cm->active_ref_scale_comm[ref];
- if (!vp9_is_valid_scale(sfc))
- vpx_internal_error(&cm->error, VPX_CODEC_UNSUP_BITSTREAM,
- "Invalid scale factors");
-
- xd->scale_factor[idx].sfc = sfc;
- setup_pre_planes(xd, idx, cfg, mi_row, mi_col, &xd->scale_factor[idx]);
- xd->corrupted |= cfg->corrupted;
-}
-
-static void decode_modes_b(VP9_COMMON *const cm, MACROBLOCKD *const xd,
- const TileInfo *const tile,
- int mi_row, int mi_col,
- vp9_reader *r, BLOCK_SIZE bsize) {
- const int less8x8 = bsize < BLOCK_8X8;
- MB_MODE_INFO *mbmi;
-
- set_offsets(cm, xd, tile, bsize, mi_row, mi_col);
- vp9_read_mode_info(cm, xd, tile, mi_row, mi_col, r);
-
- if (less8x8)
- bsize = BLOCK_8X8;
-
- // Has to be called after set_offsets
- mbmi = &xd->mi_8x8[0]->mbmi;
-
- if (mbmi->skip_coeff) {
- reset_skip_context(xd, bsize);
- } else {
- if (cm->seg.enabled)
- setup_plane_dequants(cm, xd, vp9_get_qindex(&cm->seg, mbmi->segment_id,
- cm->base_qindex));
- }
-
- if (!is_inter_block(mbmi)) {
- struct intra_args arg = { cm, xd, r };
- foreach_transformed_block(xd, bsize, predict_and_reconstruct_intra_block,
- &arg);
- } else {
- // Setup
- set_ref(cm, xd, 0, mi_row, mi_col);
- if (has_second_ref(mbmi))
- set_ref(cm, xd, 1, mi_row, mi_col);
-
- xd->subpix.filter_x = xd->subpix.filter_y =
- vp9_get_filter_kernel(mbmi->interp_filter);
-
- // Prediction
- vp9_build_inter_predictors_sb(xd, mi_row, mi_col, bsize);
-
- // Reconstruction
- if (!mbmi->skip_coeff) {
- int eobtotal = 0;
- struct inter_args arg = { cm, xd, r, &eobtotal };
- foreach_transformed_block(xd, bsize, reconstruct_inter_block, &arg);
- if (!less8x8 && eobtotal == 0)
- mbmi->skip_coeff = 1; // skip loopfilter
- }
- }
-
- xd->corrupted |= vp9_reader_has_error(r);
-}
-
-static PARTITION_TYPE read_partition(int hbs, int mi_rows, int mi_cols,
- int mi_row, int mi_col,
- vp9_prob probs[PARTITION_TYPES - 1],
- vp9_reader *r) {
- const int has_rows = (mi_row + hbs) < mi_rows;
- const int has_cols = (mi_col + hbs) < mi_cols;
-
- if (has_rows && has_cols)
- return treed_read(r, vp9_partition_tree, probs);
- else if (!has_rows && has_cols)
- return vp9_read(r, probs[1]) ? PARTITION_SPLIT : PARTITION_HORZ;
- else if (has_rows && !has_cols)
- return vp9_read(r, probs[2]) ? PARTITION_SPLIT : PARTITION_VERT;
- else
- return PARTITION_SPLIT;
-}
-
-static void decode_modes_sb(VP9_COMMON *const cm, MACROBLOCKD *const xd,
- const TileInfo *const tile,
- int mi_row, int mi_col,
- vp9_reader* r, BLOCK_SIZE bsize) {
- const int hbs = num_8x8_blocks_wide_lookup[bsize] / 2;
- PARTITION_TYPE partition;
- BLOCK_SIZE subsize;
- int ctx;
-
- if (mi_row >= cm->mi_rows || mi_col >= cm->mi_cols)
- return;
-
- ctx = partition_plane_context(xd->above_seg_context, xd->left_seg_context,
- mi_row, mi_col, bsize);
- partition = read_partition(hbs, cm->mi_rows, cm->mi_cols, mi_row, mi_col,
- cm->fc.partition_prob[cm->frame_type][ctx], r);
-
- if (!cm->frame_parallel_decoding_mode)
- ++cm->counts.partition[ctx][partition];
-
- subsize = get_subsize(bsize, partition);
- if (subsize < BLOCK_8X8) {
- decode_modes_b(cm, xd, tile, mi_row, mi_col, r, subsize);
- } else {
- switch (partition) {
- case PARTITION_NONE:
- decode_modes_b(cm, xd, tile, mi_row, mi_col, r, subsize);
- break;
- case PARTITION_HORZ:
- decode_modes_b(cm, xd, tile, mi_row, mi_col, r, subsize);
- if (mi_row + hbs < cm->mi_rows)
- decode_modes_b(cm, xd, tile, mi_row + hbs, mi_col, r, subsize);
- break;
- case PARTITION_VERT:
- decode_modes_b(cm, xd, tile, mi_row, mi_col, r, subsize);
- if (mi_col + hbs < cm->mi_cols)
- decode_modes_b(cm, xd, tile, mi_row, mi_col + hbs, r, subsize);
- break;
- case PARTITION_SPLIT:
- decode_modes_sb(cm, xd, tile, mi_row, mi_col, r, subsize);
- decode_modes_sb(cm, xd, tile, mi_row, mi_col + hbs, r, subsize);
- decode_modes_sb(cm, xd, tile, mi_row + hbs, mi_col, r, subsize);
- decode_modes_sb(cm, xd, tile, mi_row + hbs, mi_col + hbs, r, subsize);
- break;
- default:
- assert(!"Invalid partition type");
- }
- }
-
- // update partition context
- if (bsize >= BLOCK_8X8 &&
- (bsize == BLOCK_8X8 || partition != PARTITION_SPLIT))
- update_partition_context(xd->above_seg_context, xd->left_seg_context,
- mi_row, mi_col, subsize, bsize);
-}
-
-static void setup_token_decoder(const uint8_t *data,
- const uint8_t *data_end,
- size_t read_size,
- struct vpx_internal_error_info *error_info,
- vp9_reader *r) {
- // 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(data, read_size, data_end))
- vpx_internal_error(error_info, VPX_CODEC_CORRUPT_FRAME,
- "Truncated packet or corrupt tile length");
-
- if (vp9_reader_init(r, data, read_size))
- vpx_internal_error(error_info, VPX_CODEC_MEM_ERROR,
- "Failed to allocate bool decoder %d", 1);
-}
-
-static void read_coef_probs_common(vp9_coeff_probs_model *coef_probs,
- vp9_reader *r) {
- int i, j, k, l, m;
-
- if (vp9_read_bit(r))
- 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 (k > 0 || l < 3)
- for (m = 0; m < UNCONSTRAINED_NODES; m++)
- vp9_diff_update_prob(r, &coef_probs[i][j][k][l][m]);
-}
-
-static void read_coef_probs(FRAME_CONTEXT *fc, TX_MODE tx_mode,
- vp9_reader *r) {
- read_coef_probs_common(fc->coef_probs[TX_4X4], r);
-
- if (tx_mode > ONLY_4X4)
- read_coef_probs_common(fc->coef_probs[TX_8X8], r);
-
- if (tx_mode > ALLOW_8X8)
- read_coef_probs_common(fc->coef_probs[TX_16X16], r);
-
- if (tx_mode > ALLOW_16X16)
- read_coef_probs_common(fc->coef_probs[TX_32X32], r);
-}
-
-static void setup_segmentation(struct segmentation *seg,
- struct vp9_read_bit_buffer *rb) {
- int i, j;
-
- seg->update_map = 0;
- seg->update_data = 0;
-
- seg->enabled = vp9_rb_read_bit(rb);
- if (!seg->enabled)
- return;
-
- // Segmentation map update
- seg->update_map = vp9_rb_read_bit(rb);
- if (seg->update_map) {
- for (i = 0; i < SEG_TREE_PROBS; i++)
- seg->tree_probs[i] = vp9_rb_read_bit(rb) ? vp9_rb_read_literal(rb, 8)
- : MAX_PROB;
-
- seg->temporal_update = vp9_rb_read_bit(rb);
- if (seg->temporal_update) {
- for (i = 0; i < PREDICTION_PROBS; i++)
- seg->pred_probs[i] = vp9_rb_read_bit(rb) ? vp9_rb_read_literal(rb, 8)
- : MAX_PROB;
- } else {
- for (i = 0; i < PREDICTION_PROBS; i++)
- seg->pred_probs[i] = MAX_PROB;
- }
- }
-
- // Segmentation data update
- seg->update_data = vp9_rb_read_bit(rb);
- if (seg->update_data) {
- seg->abs_delta = vp9_rb_read_bit(rb);
-
- vp9_clearall_segfeatures(seg);
-
- for (i = 0; i < MAX_SEGMENTS; i++) {
- for (j = 0; j < SEG_LVL_MAX; j++) {
- int data = 0;
- const int feature_enabled = vp9_rb_read_bit(rb);
- if (feature_enabled) {
- vp9_enable_segfeature(seg, i, j);
- data = decode_unsigned_max(rb, vp9_seg_feature_data_max(j));
- if (vp9_is_segfeature_signed(j))
- data = vp9_rb_read_bit(rb) ? -data : data;
- }
- vp9_set_segdata(seg, i, j, data);
- }
- }
- }
-}
-
-static void setup_loopfilter(struct loopfilter *lf,
- struct vp9_read_bit_buffer *rb) {
- lf->filter_level = vp9_rb_read_literal(rb, 6);
- lf->sharpness_level = vp9_rb_read_literal(rb, 3);
-
- // Read in loop filter deltas applied at the MB level based on mode or ref
- // frame.
- lf->mode_ref_delta_update = 0;
-
- lf->mode_ref_delta_enabled = vp9_rb_read_bit(rb);
- if (lf->mode_ref_delta_enabled) {
- lf->mode_ref_delta_update = vp9_rb_read_bit(rb);
- if (lf->mode_ref_delta_update) {
- int i;
-
- for (i = 0; i < MAX_REF_LF_DELTAS; i++)
- if (vp9_rb_read_bit(rb))
- lf->ref_deltas[i] = vp9_rb_read_signed_literal(rb, 6);
-
- for (i = 0; i < MAX_MODE_LF_DELTAS; i++)
- if (vp9_rb_read_bit(rb))
- lf->mode_deltas[i] = vp9_rb_read_signed_literal(rb, 6);
- }
- }
-}
-
-static int read_delta_q(struct vp9_read_bit_buffer *rb, int *delta_q) {
- const int old = *delta_q;
- *delta_q = vp9_rb_read_bit(rb) ? vp9_rb_read_signed_literal(rb, 4) : 0;
- return old != *delta_q;
-}
-
-static void setup_quantization(VP9_COMMON *const cm, MACROBLOCKD *const xd,
- struct vp9_read_bit_buffer *rb) {
- int update = 0;
-
- cm->base_qindex = vp9_rb_read_literal(rb, QINDEX_BITS);
- update |= read_delta_q(rb, &cm->y_dc_delta_q);
- update |= read_delta_q(rb, &cm->uv_dc_delta_q);
- update |= read_delta_q(rb, &cm->uv_ac_delta_q);
- if (update)
- vp9_init_dequantizer(cm);
-
- xd->lossless = cm->base_qindex == 0 &&
- cm->y_dc_delta_q == 0 &&
- cm->uv_dc_delta_q == 0 &&
- cm->uv_ac_delta_q == 0;
-
- xd->itxm_add = xd->lossless ? vp9_iwht4x4_add : vp9_idct4x4_add;
-}
-
-static INTERPOLATION_TYPE read_interp_filter_type(
- struct vp9_read_bit_buffer *rb) {
- const INTERPOLATION_TYPE literal_to_type[] = { EIGHTTAP_SMOOTH,
- EIGHTTAP,
- EIGHTTAP_SHARP,
- BILINEAR };
- return vp9_rb_read_bit(rb) ? SWITCHABLE
- : literal_to_type[vp9_rb_read_literal(rb, 2)];
-}
-
-static void read_frame_size(struct vp9_read_bit_buffer *rb,
- int *width, int *height) {
- const int w = vp9_rb_read_literal(rb, 16) + 1;
- const int h = vp9_rb_read_literal(rb, 16) + 1;
- *width = w;
- *height = h;
-}
-
-static void setup_display_size(VP9_COMMON *cm, struct vp9_read_bit_buffer *rb) {
- cm->display_width = cm->width;
- cm->display_height = cm->height;
- if (vp9_rb_read_bit(rb))
- read_frame_size(rb, &cm->display_width, &cm->display_height);
-}
-
-static void apply_frame_size(VP9D_COMP *pbi, int width, int height) {
- VP9_COMMON *cm = &pbi->common;
-
- if (cm->width != width || cm->height != height) {
- if (!pbi->initial_width || !pbi->initial_height) {
- if (vp9_alloc_frame_buffers(cm, width, height))
- vpx_internal_error(&cm->error, VPX_CODEC_MEM_ERROR,
- "Failed to allocate frame buffers");
- pbi->initial_width = width;
- pbi->initial_height = height;
- } else {
- if (width > pbi->initial_width)
- vpx_internal_error(&cm->error, VPX_CODEC_CORRUPT_FRAME,
- "Frame width too large");
-
- if (height > pbi->initial_height)
- vpx_internal_error(&cm->error, VPX_CODEC_CORRUPT_FRAME,
- "Frame height too large");
- }
-
- cm->width = width;
- cm->height = height;
-
- vp9_update_frame_size(cm);
- }
-
- vp9_realloc_frame_buffer(get_frame_new_buffer(cm), cm->width, cm->height,
- cm->subsampling_x, cm->subsampling_y,
- VP9BORDERINPIXELS);
-}
-
-static void setup_frame_size(VP9D_COMP *pbi,
- struct vp9_read_bit_buffer *rb) {
- int width, height;
- read_frame_size(rb, &width, &height);
- apply_frame_size(pbi, width, height);
- setup_display_size(&pbi->common, rb);
-}
-
-static void setup_frame_size_with_refs(VP9D_COMP *pbi,
- struct vp9_read_bit_buffer *rb) {
- VP9_COMMON *const cm = &pbi->common;
-
- int width, height;
- int found = 0, i;
- for (i = 0; i < ALLOWED_REFS_PER_FRAME; ++i) {
- if (vp9_rb_read_bit(rb)) {
- YV12_BUFFER_CONFIG *const cfg = get_frame_ref_buffer(cm, i);
- width = cfg->y_crop_width;
- height = cfg->y_crop_height;
- found = 1;
- break;
- }
- }
-
- if (!found)
- read_frame_size(rb, &width, &height);
-
- if (!width || !height)
- vpx_internal_error(&cm->error, VPX_CODEC_CORRUPT_FRAME,
- "Referenced frame with invalid size");
-
- apply_frame_size(pbi, width, height);
- setup_display_size(cm, rb);
-}
-
-static void setup_tile_context(VP9D_COMP *const pbi, MACROBLOCKD *const xd,
- int tile_col) {
- int i;
- xd->mi_stream = pbi->mi_streams[tile_col];
-
- for (i = 0; i < MAX_MB_PLANE; ++i) {
- xd->above_context[i] = pbi->above_context[i];
- }
- // see note in alloc_tile_storage().
- xd->above_seg_context = pbi->above_seg_context;
-}
-
-static void decode_tile(VP9D_COMP *pbi, const TileInfo *const tile,
- vp9_reader *r) {
- const int num_threads = pbi->oxcf.max_threads;
- VP9_COMMON *const cm = &pbi->common;
- int mi_row, mi_col;
- MACROBLOCKD *xd = &pbi->mb;
-
- if (pbi->do_loopfilter_inline) {
- LFWorkerData *const lf_data = (LFWorkerData*)pbi->lf_worker.data1;
- lf_data->frame_buffer = get_frame_new_buffer(cm);
- lf_data->cm = cm;
- lf_data->xd = pbi->mb;
- lf_data->stop = 0;
- lf_data->y_only = 0;
- vp9_loop_filter_frame_init(cm, cm->lf.filter_level);
- }
-
- for (mi_row = tile->mi_row_start; mi_row < tile->mi_row_end;
- mi_row += MI_BLOCK_SIZE) {
- // For a SB there are 2 left contexts, each pertaining to a MB row within
- vp9_zero(xd->left_context);
- vp9_zero(xd->left_seg_context);
- for (mi_col = tile->mi_col_start; mi_col < tile->mi_col_end;
- mi_col += MI_BLOCK_SIZE)
- decode_modes_sb(cm, xd, tile, mi_row, mi_col, r, BLOCK_64X64);
-
- if (pbi->do_loopfilter_inline) {
- const int lf_start = mi_row - MI_BLOCK_SIZE;
- LFWorkerData *const lf_data = (LFWorkerData*)pbi->lf_worker.data1;
-
- // delay the loopfilter by 1 macroblock row.
- if (lf_start < 0) continue;
-
- // decoding has completed: finish up the loop filter in this thread.
- if (mi_row + MI_BLOCK_SIZE >= tile->mi_row_end) continue;
-
- vp9_worker_sync(&pbi->lf_worker);
- lf_data->start = lf_start;
- lf_data->stop = mi_row;
- if (num_threads > 1) {
- vp9_worker_launch(&pbi->lf_worker);
- } else {
- vp9_worker_execute(&pbi->lf_worker);
- }
- }
- }
-
- if (pbi->do_loopfilter_inline) {
- LFWorkerData *const lf_data = (LFWorkerData*)pbi->lf_worker.data1;
-
- vp9_worker_sync(&pbi->lf_worker);
- lf_data->start = lf_data->stop;
- lf_data->stop = cm->mi_rows;
- vp9_worker_execute(&pbi->lf_worker);
- }
-}
-
-static void setup_tile_info(VP9_COMMON *cm, struct vp9_read_bit_buffer *rb) {
- int min_log2_tile_cols, max_log2_tile_cols, max_ones;
- vp9_get_tile_n_bits(cm->mi_cols, &min_log2_tile_cols, &max_log2_tile_cols);
-
- // columns
- max_ones = max_log2_tile_cols - min_log2_tile_cols;
- cm->log2_tile_cols = min_log2_tile_cols;
- while (max_ones-- && vp9_rb_read_bit(rb))
- cm->log2_tile_cols++;
-
- // rows
- cm->log2_tile_rows = vp9_rb_read_bit(rb);
- if (cm->log2_tile_rows)
- cm->log2_tile_rows += vp9_rb_read_bit(rb);
-}
-
-// Reads the next tile returning its size and adjusting '*data' accordingly
-// based on 'is_last'.
-static size_t get_tile(const uint8_t *const data_end,
- int is_last,
- struct vpx_internal_error_info *error_info,
- const uint8_t **data) {
- size_t size;
-
- if (!is_last) {
- if (!read_is_valid(*data, 4, data_end))
- vpx_internal_error(error_info, VPX_CODEC_CORRUPT_FRAME,
- "Truncated packet or corrupt tile length");
-
- size = read_be32(*data);
- *data += 4;
- } else {
- size = data_end - *data;
- }
- return size;
-}
-
-static const uint8_t *decode_tiles(VP9D_COMP *pbi, const uint8_t *data) {
- vp9_reader residual_bc;
-
- VP9_COMMON *const cm = &pbi->common;
- MACROBLOCKD *const xd = &pbi->mb;
-
- const uint8_t *const data_end = pbi->source + pbi->source_sz;
- const int aligned_mi_cols = mi_cols_aligned_to_sb(cm->mi_cols);
- const int tile_cols = 1 << cm->log2_tile_cols;
- const int tile_rows = 1 << cm->log2_tile_rows;
- int tile_row, tile_col;
-
- // Note: this memset assumes above_context[0], [1] and [2]
- // are allocated as part of the same buffer.
- vpx_memset(pbi->above_context[0], 0,
- sizeof(*pbi->above_context[0]) * MAX_MB_PLANE *
- 2 * aligned_mi_cols);
-
- vpx_memset(pbi->above_seg_context, 0,
- sizeof(*pbi->above_seg_context) * aligned_mi_cols);
-
- if (pbi->oxcf.inv_tile_order) {
- const uint8_t *data_ptr2[4][1 << 6];
- vp9_reader bc_bak = {0};
-
- // pre-initialize the offsets, we're going to decode in inverse order
- data_ptr2[0][0] = data;
- for (tile_row = 0; tile_row < tile_rows; tile_row++) {
- for (tile_col = 0; tile_col < tile_cols; tile_col++) {
- const int last_tile =
- tile_row == tile_rows - 1 && tile_col == tile_cols - 1;
- const size_t size = get_tile(data_end, last_tile, &cm->error, &data);
- data_ptr2[tile_row][tile_col] = data;
- data += size;
- }
- }
-
- for (tile_row = 0; tile_row < tile_rows; tile_row++) {
- for (tile_col = tile_cols - 1; tile_col >= 0; tile_col--) {
- TileInfo tile;
-
- vp9_tile_init(&tile, cm, tile_row, tile_col);
- setup_token_decoder(data_ptr2[tile_row][tile_col], data_end,
- data_end - data_ptr2[tile_row][tile_col],
- &cm->error, &residual_bc);
- setup_tile_context(pbi, xd, tile_col);
- decode_tile(pbi, &tile, &residual_bc);
- if (tile_row == tile_rows - 1 && tile_col == tile_cols - 1)
- bc_bak = residual_bc;
- }
- }
- residual_bc = bc_bak;
- } else {
- for (tile_row = 0; tile_row < tile_rows; tile_row++) {
- for (tile_col = 0; tile_col < tile_cols; tile_col++) {
- const int last_tile =
- tile_row == tile_rows - 1 && tile_col == tile_cols - 1;
- const size_t size = get_tile(data_end, last_tile, &cm->error, &data);
- TileInfo tile;
-
- vp9_tile_init(&tile, cm, tile_row, tile_col);
-
- setup_token_decoder(data, data_end, size, &cm->error, &residual_bc);
- setup_tile_context(pbi, xd, tile_col);
- decode_tile(pbi, &tile, &residual_bc);
- data += size;
- }
- }
- }
-
- return vp9_reader_find_end(&residual_bc);
-}
-
-static int tile_worker_hook(void *arg1, void *arg2) {
- TileWorkerData *const tile_data = (TileWorkerData*)arg1;
- const TileInfo *const tile = (TileInfo*)arg2;
- int mi_row, mi_col;
-
- for (mi_row = tile->mi_row_start; mi_row < tile->mi_row_end;
- mi_row += MI_BLOCK_SIZE) {
- vp9_zero(tile_data->xd.left_context);
- vp9_zero(tile_data->xd.left_seg_context);
- for (mi_col = tile->mi_col_start; mi_col < tile->mi_col_end;
- mi_col += MI_BLOCK_SIZE)
- decode_modes_sb(tile_data->cm, &tile_data->xd, tile,
- mi_row, mi_col, &tile_data->bit_reader, BLOCK_64X64);
- }
- return !tile_data->xd.corrupted;
-}
-
-static const uint8_t *decode_tiles_mt(VP9D_COMP *pbi, const uint8_t *data) {
- VP9_COMMON *const cm = &pbi->common;
- const uint8_t *const data_end = pbi->source + pbi->source_sz;
- const int aligned_mi_cols = mi_cols_aligned_to_sb(cm->mi_cols);
- const int tile_cols = 1 << cm->log2_tile_cols;
- const int tile_rows = 1 << cm->log2_tile_rows;
- const int num_workers = MIN(pbi->oxcf.max_threads & ~1, tile_cols);
- int tile_col = 0;
-
- assert(tile_rows == 1);
- (void)tile_rows;
-
- if (num_workers > pbi->num_tile_workers) {
- int i;
- CHECK_MEM_ERROR(cm, pbi->tile_workers,
- vpx_realloc(pbi->tile_workers,
- num_workers * sizeof(*pbi->tile_workers)));
- for (i = pbi->num_tile_workers; i < num_workers; ++i) {
- VP9Worker *const worker = &pbi->tile_workers[i];
- ++pbi->num_tile_workers;
-
- vp9_worker_init(worker);
- worker->hook = (VP9WorkerHook)tile_worker_hook;
- CHECK_MEM_ERROR(cm, worker->data1,
- vpx_memalign(32, sizeof(TileWorkerData)));
- CHECK_MEM_ERROR(cm, worker->data2, vpx_malloc(sizeof(TileInfo)));
- if (i < num_workers - 1 && !vp9_worker_reset(worker)) {
- vpx_internal_error(&cm->error, VPX_CODEC_ERROR,
- "Tile decoder thread creation failed");
- }
- }
- }
-
- // Note: this memset assumes above_context[0], [1] and [2]
- // are allocated as part of the same buffer.
- vpx_memset(pbi->above_context[0], 0,
- sizeof(*pbi->above_context[0]) * MAX_MB_PLANE *
- 2 * aligned_mi_cols);
- vpx_memset(pbi->above_seg_context, 0,
- sizeof(*pbi->above_seg_context) * aligned_mi_cols);
-
- while (tile_col < tile_cols) {
- int i;
- for (i = 0; i < num_workers && tile_col < tile_cols; ++i) {
- VP9Worker *const worker = &pbi->tile_workers[i];
- TileWorkerData *const tile_data = (TileWorkerData*)worker->data1;
- TileInfo *const tile = (TileInfo*)worker->data2;
- const size_t size =
- get_tile(data_end, tile_col == tile_cols - 1, &cm->error, &data);
-
- tile_data->cm = cm;
- tile_data->xd = pbi->mb;
- tile_data->xd.corrupted = 0;
- vp9_tile_init(tile, tile_data->cm, 0, tile_col);
-
- setup_token_decoder(data, data_end, size, &cm->error,
- &tile_data->bit_reader);
- setup_tile_context(pbi, &tile_data->xd, tile_col);
-
- worker->had_error = 0;
- if (i == num_workers - 1 || tile_col == tile_cols - 1) {
- vp9_worker_execute(worker);
- } else {
- vp9_worker_launch(worker);
- }
-
- data += size;
- ++tile_col;
- }
-
- for (; i > 0; --i) {
- VP9Worker *const worker = &pbi->tile_workers[i - 1];
- pbi->mb.corrupted |= !vp9_worker_sync(worker);
- }
- }
-
- {
- const int final_worker = (tile_cols + num_workers - 1) % num_workers;
- TileWorkerData *const tile_data =
- (TileWorkerData*)pbi->tile_workers[final_worker].data1;
- return vp9_reader_find_end(&tile_data->bit_reader);
- }
-}
-
-static void check_sync_code(VP9_COMMON *cm, struct vp9_read_bit_buffer *rb) {
- if (vp9_rb_read_literal(rb, 8) != VP9_SYNC_CODE_0 ||
- vp9_rb_read_literal(rb, 8) != VP9_SYNC_CODE_1 ||
- vp9_rb_read_literal(rb, 8) != VP9_SYNC_CODE_2) {
- vpx_internal_error(&cm->error, VPX_CODEC_UNSUP_BITSTREAM,
- "Invalid frame sync code");
- }
-}
-
-static void error_handler(void *data, size_t bit_offset) {
- VP9_COMMON *const cm = (VP9_COMMON *)data;
- vpx_internal_error(&cm->error, VPX_CODEC_CORRUPT_FRAME, "Truncated packet");
-}
-
-#define RESERVED \
- if (vp9_rb_read_bit(rb)) \
- vpx_internal_error(&cm->error, VPX_CODEC_UNSUP_BITSTREAM, \
- "Reserved bit must be unset")
-
-static size_t read_uncompressed_header(VP9D_COMP *pbi,
- struct vp9_read_bit_buffer *rb) {
- VP9_COMMON *const cm = &pbi->common;
- size_t sz;
- int i;
-
- cm->last_frame_type = cm->frame_type;
-
- if (vp9_rb_read_literal(rb, 2) != VP9_FRAME_MARKER)
- vpx_internal_error(&cm->error, VPX_CODEC_UNSUP_BITSTREAM,
- "Invalid frame marker");
-
- cm->version = vp9_rb_read_bit(rb);
- RESERVED;
-
- if (vp9_rb_read_bit(rb)) {
- // show an existing frame directly
- int frame_to_show = cm->ref_frame_map[vp9_rb_read_literal(rb, 3)];
- ref_cnt_fb(cm->fb_idx_ref_cnt, &cm->new_fb_idx, frame_to_show);
- pbi->refresh_frame_flags = 0;
- cm->lf.filter_level = 0;
- return 0;
- }
-
- cm->frame_type = (FRAME_TYPE) vp9_rb_read_bit(rb);
- cm->show_frame = vp9_rb_read_bit(rb);
- cm->error_resilient_mode = vp9_rb_read_bit(rb);
-
- if (cm->frame_type == KEY_FRAME) {
- check_sync_code(cm, rb);
-
- cm->color_space = vp9_rb_read_literal(rb, 3); // colorspace
- if (cm->color_space != SRGB) {
- vp9_rb_read_bit(rb); // [16,235] (including xvycc) vs [0,255] range
- if (cm->version == 1) {
- cm->subsampling_x = vp9_rb_read_bit(rb);
- cm->subsampling_y = vp9_rb_read_bit(rb);
- vp9_rb_read_bit(rb); // has extra plane
- } else {
- cm->subsampling_y = cm->subsampling_x = 1;
- }
- } else {
- if (cm->version == 1) {
- cm->subsampling_y = cm->subsampling_x = 0;
- vp9_rb_read_bit(rb); // has extra plane
- } else {
- vpx_internal_error(&cm->error, VPX_CODEC_UNSUP_BITSTREAM,
- "RGB not supported in profile 0");
- }
- }
-
- pbi->refresh_frame_flags = (1 << NUM_REF_FRAMES) - 1;
-
- for (i = 0; i < ALLOWED_REFS_PER_FRAME; ++i)
- cm->active_ref_idx[i] = cm->new_fb_idx;
-
- setup_frame_size(pbi, rb);
- } else {
- cm->intra_only = cm->show_frame ? 0 : vp9_rb_read_bit(rb);
-
- cm->reset_frame_context = cm->error_resilient_mode ?
- 0 : vp9_rb_read_literal(rb, 2);
-
- if (cm->intra_only) {
- check_sync_code(cm, rb);
-
- pbi->refresh_frame_flags = vp9_rb_read_literal(rb, NUM_REF_FRAMES);
- setup_frame_size(pbi, rb);
- } else {
- pbi->refresh_frame_flags = vp9_rb_read_literal(rb, NUM_REF_FRAMES);
-
- for (i = 0; i < ALLOWED_REFS_PER_FRAME; ++i) {
- const int ref = vp9_rb_read_literal(rb, NUM_REF_FRAMES_LOG2);
- cm->active_ref_idx[i] = cm->ref_frame_map[ref];
- cm->ref_frame_sign_bias[LAST_FRAME + i] = vp9_rb_read_bit(rb);
- }
-
- setup_frame_size_with_refs(pbi, rb);
-
- cm->allow_high_precision_mv = vp9_rb_read_bit(rb);
- cm->mcomp_filter_type = read_interp_filter_type(rb);
-
- for (i = 0; i < ALLOWED_REFS_PER_FRAME; ++i)
- vp9_setup_scale_factors(cm, i);
- }
- }
-
- if (!cm->error_resilient_mode) {
- cm->refresh_frame_context = vp9_rb_read_bit(rb);
- cm->frame_parallel_decoding_mode = vp9_rb_read_bit(rb);
- } else {
- cm->refresh_frame_context = 0;
- cm->frame_parallel_decoding_mode = 1;
- }
-
- // This flag will be overridden by the call to vp9_setup_past_independence
- // below, forcing the use of context 0 for those frame types.
- cm->frame_context_idx = vp9_rb_read_literal(rb, NUM_FRAME_CONTEXTS_LOG2);
-
- if (frame_is_intra_only(cm) || cm->error_resilient_mode)
- vp9_setup_past_independence(cm);
-
- setup_loopfilter(&cm->lf, rb);
- setup_quantization(cm, &pbi->mb, rb);
- setup_segmentation(&cm->seg, rb);
-
- setup_tile_info(cm, rb);
- sz = vp9_rb_read_literal(rb, 16);
-
- if (sz == 0)
- vpx_internal_error(&cm->error, VPX_CODEC_CORRUPT_FRAME,
- "Invalid header size");
-
- return sz;
-}
-
-static int read_compressed_header(VP9D_COMP *pbi, const uint8_t *data,
- size_t partition_size) {
- VP9_COMMON *const cm = &pbi->common;
- MACROBLOCKD *const xd = &pbi->mb;
- FRAME_CONTEXT *const fc = &cm->fc;
- vp9_reader r;
- int k;
-
- if (vp9_reader_init(&r, data, partition_size))
- vpx_internal_error(&cm->error, VPX_CODEC_MEM_ERROR,
- "Failed to allocate bool decoder 0");
-
- cm->tx_mode = xd->lossless ? ONLY_4X4 : read_tx_mode(&r);
- if (cm->tx_mode == TX_MODE_SELECT)
- read_tx_probs(&fc->tx_probs, &r);
- read_coef_probs(fc, cm->tx_mode, &r);
-
- for (k = 0; k < MBSKIP_CONTEXTS; ++k)
- vp9_diff_update_prob(&r, &fc->mbskip_probs[k]);
-
- if (!frame_is_intra_only(cm)) {
- nmv_context *const nmvc = &fc->nmvc;
- int i, j;
-
- read_inter_mode_probs(fc, &r);
-
- if (cm->mcomp_filter_type == SWITCHABLE)
- read_switchable_interp_probs(fc, &r);
-
- for (i = 0; i < INTRA_INTER_CONTEXTS; i++)
- vp9_diff_update_prob(&r, &fc->intra_inter_prob[i]);
-
- read_comp_pred(cm, &r);
-
- for (j = 0; j < BLOCK_SIZE_GROUPS; j++)
- for (i = 0; i < INTRA_MODES - 1; ++i)
- vp9_diff_update_prob(&r, &fc->y_mode_prob[j][i]);
-
- for (j = 0; j < PARTITION_CONTEXTS; ++j)
- for (i = 0; i < PARTITION_TYPES - 1; ++i)
- vp9_diff_update_prob(&r, &fc->partition_prob[INTER_FRAME][j][i]);
-
- read_mv_probs(&r, nmvc, cm->allow_high_precision_mv);
- }
-
- return vp9_reader_has_error(&r);
-}
-
-void vp9_init_dequantizer(VP9_COMMON *cm) {
- int q;
-
- for (q = 0; q < QINDEX_RANGE; q++) {
- cm->y_dequant[q][0] = vp9_dc_quant(q, cm->y_dc_delta_q);
- cm->y_dequant[q][1] = vp9_ac_quant(q, 0);
-
- cm->uv_dequant[q][0] = vp9_dc_quant(q, cm->uv_dc_delta_q);
- cm->uv_dequant[q][1] = vp9_ac_quant(q, cm->uv_ac_delta_q);
- }
-}
-
-#ifdef NDEBUG
-#define debug_check_frame_counts(cm) (void)0
-#else // !NDEBUG
-// Counts should only be incremented when frame_parallel_decoding_mode and
-// error_resilient_mode are disabled.
-static void debug_check_frame_counts(const VP9_COMMON *const cm) {
- FRAME_COUNTS zero_counts;
- vp9_zero(zero_counts);
- assert(cm->frame_parallel_decoding_mode || cm->error_resilient_mode);
- assert(!memcmp(cm->counts.y_mode, zero_counts.y_mode,
- sizeof(cm->counts.y_mode)));
- assert(!memcmp(cm->counts.uv_mode, zero_counts.uv_mode,
- sizeof(cm->counts.uv_mode)));
- assert(!memcmp(cm->counts.partition, zero_counts.partition,
- sizeof(cm->counts.partition)));
- assert(!memcmp(cm->counts.coef, zero_counts.coef,
- sizeof(cm->counts.coef)));
- assert(!memcmp(cm->counts.eob_branch, zero_counts.eob_branch,
- sizeof(cm->counts.eob_branch)));
- assert(!memcmp(cm->counts.switchable_interp, zero_counts.switchable_interp,
- sizeof(cm->counts.switchable_interp)));
- assert(!memcmp(cm->counts.inter_mode, zero_counts.inter_mode,
- sizeof(cm->counts.inter_mode)));
- assert(!memcmp(cm->counts.intra_inter, zero_counts.intra_inter,
- sizeof(cm->counts.intra_inter)));
- assert(!memcmp(cm->counts.comp_inter, zero_counts.comp_inter,
- sizeof(cm->counts.comp_inter)));
- assert(!memcmp(cm->counts.single_ref, zero_counts.single_ref,
- sizeof(cm->counts.single_ref)));
- assert(!memcmp(cm->counts.comp_ref, zero_counts.comp_ref,
- sizeof(cm->counts.comp_ref)));
- assert(!memcmp(&cm->counts.tx, &zero_counts.tx, sizeof(cm->counts.tx)));
- assert(!memcmp(cm->counts.mbskip, zero_counts.mbskip,
- sizeof(cm->counts.mbskip)));
- assert(!memcmp(&cm->counts.mv, &zero_counts.mv, sizeof(cm->counts.mv)));
-}
-#endif // NDEBUG
-
-int vp9_decode_frame(VP9D_COMP *pbi, const uint8_t **p_data_end) {
- int i;
- VP9_COMMON *const cm = &pbi->common;
- MACROBLOCKD *const xd = &pbi->mb;
-
- const uint8_t *data = pbi->source;
- const uint8_t *const data_end = pbi->source + pbi->source_sz;
-
- struct vp9_read_bit_buffer rb = { data, data_end, 0, cm, error_handler };
- const size_t first_partition_size = read_uncompressed_header(pbi, &rb);
- const int keyframe = cm->frame_type == KEY_FRAME;
- const int tile_rows = 1 << cm->log2_tile_rows;
- const int tile_cols = 1 << cm->log2_tile_cols;
- YV12_BUFFER_CONFIG *const new_fb = get_frame_new_buffer(cm);
-
- if (!first_partition_size) {
- // showing a frame directly
- *p_data_end = data + 1;
- return 0;
- }
-
- if (!pbi->decoded_key_frame && !keyframe)
- return -1;
-
- data += vp9_rb_bytes_read(&rb);
- if (!read_is_valid(data, first_partition_size, data_end))
- vpx_internal_error(&cm->error, VPX_CODEC_CORRUPT_FRAME,
- "Truncated packet or corrupt header length");
-
- pbi->do_loopfilter_inline =
- (cm->log2_tile_rows | cm->log2_tile_cols) == 0 && cm->lf.filter_level;
- if (pbi->do_loopfilter_inline && pbi->lf_worker.data1 == NULL) {
- CHECK_MEM_ERROR(cm, pbi->lf_worker.data1, vpx_malloc(sizeof(LFWorkerData)));
- pbi->lf_worker.hook = (VP9WorkerHook)vp9_loop_filter_worker;
- if (pbi->oxcf.max_threads > 1 && !vp9_worker_reset(&pbi->lf_worker)) {
- vpx_internal_error(&cm->error, VPX_CODEC_ERROR,
- "Loop filter thread creation failed");
- }
- }
-
- alloc_tile_storage(pbi, tile_cols);
-
- xd->mi_8x8 = cm->mi_grid_visible;
- xd->mode_info_stride = cm->mode_info_stride;
- set_prev_mi(cm);
-
- setup_plane_dequants(cm, xd, cm->base_qindex);
- setup_block_dptrs(xd, cm->subsampling_x, cm->subsampling_y);
-
- cm->fc = cm->frame_contexts[cm->frame_context_idx];
- vp9_zero(cm->counts);
- for (i = 0; i < MAX_MB_PLANE; ++i)
- vp9_zero(xd->plane[i].qcoeff);
-
- xd->corrupted = 0;
- new_fb->corrupted = read_compressed_header(pbi, data, first_partition_size);
-
- // TODO(jzern): remove frame_parallel_decoding_mode restriction for
- // single-frame tile decoding.
- if (pbi->oxcf.max_threads > 1 && tile_rows == 1 && tile_cols > 1 &&
- cm->frame_parallel_decoding_mode) {
- *p_data_end = decode_tiles_mt(pbi, data + first_partition_size);
- } else {
- *p_data_end = decode_tiles(pbi, data + first_partition_size);
- }
-
- cm->last_width = cm->width;
- cm->last_height = cm->height;
-
- new_fb->corrupted |= xd->corrupted;
-
- if (!pbi->decoded_key_frame) {
- if (keyframe && !new_fb->corrupted)
- pbi->decoded_key_frame = 1;
- else
- vpx_internal_error(&cm->error, VPX_CODEC_CORRUPT_FRAME,
- "A stream must start with a complete key frame");
- }
-
- if (!cm->error_resilient_mode && !cm->frame_parallel_decoding_mode) {
- vp9_adapt_coef_probs(cm);
-
- if (!frame_is_intra_only(cm)) {
- vp9_adapt_mode_probs(cm);
- vp9_adapt_mv_probs(cm, cm->allow_high_precision_mv);
- }
- } else {
- debug_check_frame_counts(cm);
- }
-
- if (cm->refresh_frame_context)
- cm->frame_contexts[cm->frame_context_idx] = cm->fc;
-
- return 0;
-}
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