diff options
Diffstat (limited to 'media/libvpx/vp9/decoder/vp9_decodeframe.c')
| -rw-r--r-- | media/libvpx/vp9/decoder/vp9_decodeframe.c | 2077 |
1 files changed, 2077 insertions, 0 deletions
diff --git a/media/libvpx/vp9/decoder/vp9_decodeframe.c b/media/libvpx/vp9/decoder/vp9_decodeframe.c new file mode 100644 index 000000000..30ca2d08a --- /dev/null +++ b/media/libvpx/vp9/decoder/vp9_decodeframe.c @@ -0,0 +1,2077 @@ +/* + * 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 <stdlib.h> // qsort() + +#include "./vp9_rtcd.h" +#include "./vpx_scale_rtcd.h" + +#include "vpx_mem/vpx_mem.h" +#include "vpx_ports/mem.h" +#include "vpx_ports/mem_ops.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_idct.h" +#include "vp9/common/vp9_thread_common.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_thread.h" +#include "vp9/common/vp9_tile_common.h" + +#include "vp9/decoder/vp9_decodeframe.h" +#include "vp9/decoder/vp9_detokenize.h" +#include "vp9/decoder/vp9_decodemv.h" +#include "vp9/decoder/vp9_decoder.h" +#include "vp9/decoder/vp9_dsubexp.h" +#include "vp9/decoder/vp9_read_bit_buffer.h" +#include "vp9/decoder/vp9_reader.h" + +#define MAX_VP9_HEADER_SIZE 80 + +static int is_compound_reference_allowed(const VP9_COMMON *cm) { + int i; + for (i = 1; i < 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_reference_mode(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; + } +} + +static int read_is_valid(const uint8_t *start, size_t len, const uint8_t *end) { + return len != 0 && len <= (size_t)(end - start); +} + +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_mode_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 REFERENCE_MODE read_frame_reference_mode(const VP9_COMMON *cm, + vp9_reader *r) { + if (is_compound_reference_allowed(cm)) { + return vp9_read_bit(r) ? (vp9_read_bit(r) ? REFERENCE_MODE_SELECT + : COMPOUND_REFERENCE) + : SINGLE_REFERENCE; + } else { + return SINGLE_REFERENCE; + } +} + +static void read_frame_reference_mode_probs(VP9_COMMON *cm, vp9_reader *r) { + FRAME_CONTEXT *const fc = cm->fc; + int i; + + if (cm->reference_mode == REFERENCE_MODE_SELECT) + for (i = 0; i < COMP_INTER_CONTEXTS; ++i) + vp9_diff_update_prob(r, &fc->comp_inter_prob[i]); + + if (cm->reference_mode != COMPOUND_REFERENCE) + for (i = 0; i < REF_CONTEXTS; ++i) { + vp9_diff_update_prob(r, &fc->single_ref_prob[i][0]); + vp9_diff_update_prob(r, &fc->single_ref_prob[i][1]); + } + + if (cm->reference_mode != SINGLE_REFERENCE) + for (i = 0; i < REF_CONTEXTS; ++i) + vp9_diff_update_prob(r, &fc->comp_ref_prob[i]); +} + +static void update_mv_probs(vp9_prob *p, int n, vp9_reader *r) { + int i; + for (i = 0; i < n; ++i) + if (vp9_read(r, MV_UPDATE_PROB)) + p[i] = (vp9_read_literal(r, 7) << 1) | 1; +} + +static void read_mv_probs(nmv_context *ctx, int allow_hp, vp9_reader *r) { + int i, j; + + update_mv_probs(ctx->joints, MV_JOINTS - 1, r); + + for (i = 0; i < 2; ++i) { + nmv_component *const comp_ctx = &ctx->comps[i]; + update_mv_probs(&comp_ctx->sign, 1, r); + update_mv_probs(comp_ctx->classes, MV_CLASSES - 1, r); + update_mv_probs(comp_ctx->class0, CLASS0_SIZE - 1, r); + update_mv_probs(comp_ctx->bits, MV_OFFSET_BITS, r); + } + + for (i = 0; i < 2; ++i) { + nmv_component *const comp_ctx = &ctx->comps[i]; + for (j = 0; j < CLASS0_SIZE; ++j) + update_mv_probs(comp_ctx->class0_fp[j], MV_FP_SIZE - 1, r); + update_mv_probs(comp_ctx->fp, 3, r); + } + + if (allow_hp) { + for (i = 0; i < 2; ++i) { + nmv_component *const comp_ctx = &ctx->comps[i]; + update_mv_probs(&comp_ctx->class0_hp, 1, r); + update_mv_probs(&comp_ctx->hp, 1, r); + } + } +} + +static void inverse_transform_block(MACROBLOCKD* xd, int plane, int block, + TX_SIZE tx_size, uint8_t *dst, int stride, + int eob) { + struct macroblockd_plane *const pd = &xd->plane[plane]; + if (eob > 0) { + TX_TYPE tx_type = DCT_DCT; + tran_low_t *const dqcoeff = BLOCK_OFFSET(pd->dqcoeff, block); +#if CONFIG_VP9_HIGHBITDEPTH + if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) { + if (xd->lossless) { + tx_type = DCT_DCT; + vp9_highbd_iwht4x4_add(dqcoeff, dst, stride, eob, xd->bd); + } else { + const PLANE_TYPE plane_type = pd->plane_type; + switch (tx_size) { + case TX_4X4: + tx_type = get_tx_type_4x4(plane_type, xd, block); + vp9_highbd_iht4x4_add(tx_type, dqcoeff, dst, stride, eob, xd->bd); + break; + case TX_8X8: + tx_type = get_tx_type(plane_type, xd); + vp9_highbd_iht8x8_add(tx_type, dqcoeff, dst, stride, eob, xd->bd); + break; + case TX_16X16: + tx_type = get_tx_type(plane_type, xd); + vp9_highbd_iht16x16_add(tx_type, dqcoeff, dst, stride, eob, xd->bd); + break; + case TX_32X32: + tx_type = DCT_DCT; + vp9_highbd_idct32x32_add(dqcoeff, dst, stride, eob, xd->bd); + break; + default: + assert(0 && "Invalid transform size"); + } + } + } else { + if (xd->lossless) { + tx_type = DCT_DCT; + vp9_iwht4x4_add(dqcoeff, dst, stride, eob); + } else { + const PLANE_TYPE plane_type = pd->plane_type; + switch (tx_size) { + case TX_4X4: + tx_type = get_tx_type_4x4(plane_type, xd, block); + vp9_iht4x4_add(tx_type, dqcoeff, dst, stride, eob); + break; + case TX_8X8: + tx_type = get_tx_type(plane_type, xd); + vp9_iht8x8_add(tx_type, dqcoeff, dst, stride, eob); + break; + case TX_16X16: + tx_type = get_tx_type(plane_type, xd); + vp9_iht16x16_add(tx_type, dqcoeff, dst, stride, eob); + break; + case TX_32X32: + tx_type = DCT_DCT; + vp9_idct32x32_add(dqcoeff, dst, stride, eob); + break; + default: + assert(0 && "Invalid transform size"); + return; + } + } + } +#else + if (xd->lossless) { + tx_type = DCT_DCT; + vp9_iwht4x4_add(dqcoeff, dst, stride, eob); + } else { + const PLANE_TYPE plane_type = pd->plane_type; + switch (tx_size) { + case TX_4X4: + tx_type = get_tx_type_4x4(plane_type, xd, block); + vp9_iht4x4_add(tx_type, dqcoeff, dst, stride, eob); + break; + case TX_8X8: + tx_type = get_tx_type(plane_type, xd); + vp9_iht8x8_add(tx_type, dqcoeff, dst, stride, eob); + break; + case TX_16X16: + tx_type = get_tx_type(plane_type, xd); + vp9_iht16x16_add(tx_type, dqcoeff, dst, stride, eob); + break; + case TX_32X32: + tx_type = DCT_DCT; + vp9_idct32x32_add(dqcoeff, dst, stride, eob); + break; + default: + assert(0 && "Invalid transform size"); + return; + } + } +#endif // CONFIG_VP9_HIGHBITDEPTH + + if (eob == 1) { + memset(dqcoeff, 0, 2 * sizeof(dqcoeff[0])); + } else { + if (tx_type == DCT_DCT && tx_size <= TX_16X16 && eob <= 10) + memset(dqcoeff, 0, 4 * (4 << tx_size) * sizeof(dqcoeff[0])); + else if (tx_size == TX_32X32 && eob <= 34) + memset(dqcoeff, 0, 256 * sizeof(dqcoeff[0])); + else + memset(dqcoeff, 0, (16 << (tx_size << 1)) * sizeof(dqcoeff[0])); + } + } +} + +struct intra_args { + MACROBLOCKD *xd; + vp9_reader *r; + int seg_id; +}; + +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 = (struct intra_args *)arg; + MACROBLOCKD *const xd = args->xd; + struct macroblockd_plane *const pd = &xd->plane[plane]; + MODE_INFO *const mi = xd->mi[0]; + const PREDICTION_MODE mode = (plane == 0) ? get_y_mode(mi, block) + : mi->mbmi.uv_mode; + int x, y; + uint8_t *dst; + txfrm_block_to_raster_xy(plane_bsize, tx_size, block, &x, &y); + dst = &pd->dst.buf[4 * y * pd->dst.stride + 4 * x]; + + vp9_predict_intra_block(xd, block >> (tx_size << 1), + b_width_log2_lookup[plane_bsize], tx_size, mode, + dst, pd->dst.stride, dst, pd->dst.stride, + x, y, plane); + + if (!mi->mbmi.skip) { + const int eob = vp9_decode_block_tokens(xd, plane, block, + plane_bsize, x, y, tx_size, + args->r, args->seg_id); + inverse_transform_block(xd, plane, block, tx_size, dst, pd->dst.stride, + eob); + } +} + +struct inter_args { + MACROBLOCKD *xd; + vp9_reader *r; + int *eobtotal; + int seg_id; +}; + +static void reconstruct_inter_block(int plane, int block, + BLOCK_SIZE plane_bsize, + TX_SIZE tx_size, void *arg) { + struct inter_args *args = (struct inter_args *)arg; + MACROBLOCKD *const xd = args->xd; + struct macroblockd_plane *const pd = &xd->plane[plane]; + int x, y, eob; + txfrm_block_to_raster_xy(plane_bsize, tx_size, block, &x, &y); + eob = vp9_decode_block_tokens(xd, plane, block, plane_bsize, + x, y, tx_size, args->r, args->seg_id); + inverse_transform_block(xd, plane, block, tx_size, + &pd->dst.buf[4 * y * pd->dst.stride + 4 * x], + pd->dst.stride, eob); + *args->eobtotal += eob; +} + +static MB_MODE_INFO *set_offsets(VP9_COMMON *const cm, MACROBLOCKD *const xd, + const TileInfo *const tile, + BLOCK_SIZE bsize, int mi_row, int mi_col) { + const int bw = num_8x8_blocks_wide_lookup[bsize]; + const int bh = num_8x8_blocks_high_lookup[bsize]; + const int x_mis = MIN(bw, cm->mi_cols - mi_col); + const int y_mis = MIN(bh, cm->mi_rows - mi_row); + const int offset = mi_row * cm->mi_stride + mi_col; + int x, y; + + xd->mi = cm->mi_grid_visible + offset; + xd->mi[0] = &cm->mi[offset]; + xd->mi[0]->mbmi.sb_type = bsize; + for (y = 0; y < y_mis; ++y) + for (x = !y; x < x_mis; ++x) { + xd->mi[y * cm->mi_stride + x] = xd->mi[0]; + } + + set_skip_context(xd, 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); + + vp9_setup_dst_planes(xd->plane, get_frame_new_buffer(cm), mi_row, mi_col); + return &xd->mi[0]->mbmi; +} + +static void decode_block(VP9Decoder *const pbi, MACROBLOCKD *const xd, + const TileInfo *const tile, + int mi_row, int mi_col, + vp9_reader *r, BLOCK_SIZE bsize) { + VP9_COMMON *const cm = &pbi->common; + const int less8x8 = bsize < BLOCK_8X8; + MB_MODE_INFO *mbmi = set_offsets(cm, xd, tile, bsize, mi_row, mi_col); + + if (bsize >= BLOCK_8X8 && (cm->subsampling_x || cm->subsampling_y)) { + const BLOCK_SIZE uv_subsize = + ss_size_lookup[bsize][cm->subsampling_x][cm->subsampling_y]; + if (uv_subsize == BLOCK_INVALID) + vpx_internal_error(xd->error_info, + VPX_CODEC_CORRUPT_FRAME, "Invalid block size."); + } + + vp9_read_mode_info(pbi, xd, tile, mi_row, mi_col, r); + + if (less8x8) + bsize = BLOCK_8X8; + + if (mbmi->skip) { + reset_skip_context(xd, bsize); + } + + if (!is_inter_block(mbmi)) { + struct intra_args arg = {xd, r, mbmi->segment_id}; + vp9_foreach_transformed_block(xd, bsize, + predict_and_reconstruct_intra_block, &arg); + } else { + // Prediction + vp9_dec_build_inter_predictors_sb(pbi, xd, mi_row, mi_col, bsize); + + // Reconstruction + if (!mbmi->skip) { + int eobtotal = 0; + struct inter_args arg = {xd, r, &eobtotal, mbmi->segment_id}; + vp9_foreach_transformed_block(xd, bsize, reconstruct_inter_block, &arg); + if (!less8x8 && eobtotal == 0) + mbmi->skip = 1; // skip loopfilter + } + } + + xd->corrupted |= vp9_reader_has_error(r); +} + +static PARTITION_TYPE read_partition(VP9_COMMON *cm, MACROBLOCKD *xd, + int hbs, + int mi_row, int mi_col, BLOCK_SIZE bsize, + vp9_reader *r) { + const int ctx = partition_plane_context(xd, mi_row, mi_col, bsize); + const vp9_prob *const probs = get_partition_probs(cm, ctx); + const int has_rows = (mi_row + hbs) < cm->mi_rows; + const int has_cols = (mi_col + hbs) < cm->mi_cols; + FRAME_COUNTS *counts = xd->counts; + PARTITION_TYPE p; + + if (has_rows && has_cols) + p = (PARTITION_TYPE)vp9_read_tree(r, vp9_partition_tree, probs); + else if (!has_rows && has_cols) + p = vp9_read(r, probs[1]) ? PARTITION_SPLIT : PARTITION_HORZ; + else if (has_rows && !has_cols) + p = vp9_read(r, probs[2]) ? PARTITION_SPLIT : PARTITION_VERT; + else + p = PARTITION_SPLIT; + + if (counts) + ++counts->partition[ctx][p]; + + return p; +} + +static void decode_partition(VP9Decoder *const pbi, MACROBLOCKD *const xd, + const TileInfo *const tile, + int mi_row, int mi_col, + vp9_reader* r, BLOCK_SIZE bsize) { + VP9_COMMON *const cm = &pbi->common; + const int hbs = num_8x8_blocks_wide_lookup[bsize] / 2; + PARTITION_TYPE partition; + BLOCK_SIZE subsize; + + if (mi_row >= cm->mi_rows || mi_col >= cm->mi_cols) + return; + + partition = read_partition(cm, xd, hbs, mi_row, mi_col, bsize, r); + subsize = get_subsize(bsize, partition); + if (bsize == BLOCK_8X8) { + decode_block(pbi, xd, tile, mi_row, mi_col, r, subsize); + } else { + switch (partition) { + case PARTITION_NONE: + decode_block(pbi, xd, tile, mi_row, mi_col, r, subsize); + break; + case PARTITION_HORZ: + decode_block(pbi, xd, tile, mi_row, mi_col, r, subsize); + if (mi_row + hbs < cm->mi_rows) + decode_block(pbi, xd, tile, mi_row + hbs, mi_col, r, subsize); + break; + case PARTITION_VERT: + decode_block(pbi, xd, tile, mi_row, mi_col, r, subsize); + if (mi_col + hbs < cm->mi_cols) + decode_block(pbi, xd, tile, mi_row, mi_col + hbs, r, subsize); + break; + case PARTITION_SPLIT: + decode_partition(pbi, xd, tile, mi_row, mi_col, r, subsize); + decode_partition(pbi, xd, tile, mi_row, mi_col + hbs, r, subsize); + decode_partition(pbi, xd, tile, mi_row + hbs, mi_col, r, subsize); + decode_partition(pbi, xd, tile, mi_row + hbs, mi_col + hbs, r, subsize); + break; + default: + assert(0 && "Invalid partition type"); + } + } + + // update partition context + if (bsize >= BLOCK_8X8 && + (bsize == BLOCK_8X8 || partition != PARTITION_SPLIT)) + update_partition_context(xd, 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, + vpx_decrypt_cb decrypt_cb, + void *decrypt_state) { + // 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, decrypt_cb, decrypt_state)) + 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 < PLANE_TYPES; ++i) + for (j = 0; j < REF_TYPES; ++j) + for (k = 0; k < COEF_BANDS; ++k) + for (l = 0; l < BAND_COEFF_CONTEXTS(k); ++l) + 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) { + const TX_SIZE max_tx_size = tx_mode_to_biggest_tx_size[tx_mode]; + TX_SIZE tx_size; + for (tx_size = TX_4X4; tx_size <= max_tx_size; ++tx_size) + read_coef_probs_common(fc->coef_probs[tx_size], 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 INLINE int read_delta_q(struct vp9_read_bit_buffer *rb) { + return vp9_rb_read_bit(rb) ? vp9_rb_read_signed_literal(rb, 4) : 0; +} + +static void setup_quantization(VP9_COMMON *const cm, MACROBLOCKD *const xd, + struct vp9_read_bit_buffer *rb) { + cm->base_qindex = vp9_rb_read_literal(rb, QINDEX_BITS); + cm->y_dc_delta_q = read_delta_q(rb); + cm->uv_dc_delta_q = read_delta_q(rb); + cm->uv_ac_delta_q = read_delta_q(rb); + cm->dequant_bit_depth = cm->bit_depth; + xd->lossless = cm->base_qindex == 0 && + cm->y_dc_delta_q == 0 && + cm->uv_dc_delta_q == 0 && + cm->uv_ac_delta_q == 0; + +#if CONFIG_VP9_HIGHBITDEPTH + xd->bd = (int)cm->bit_depth; +#endif +} + +static void setup_segmentation_dequant(VP9_COMMON *const cm) { + // Build y/uv dequant values based on segmentation. + if (cm->seg.enabled) { + int i; + for (i = 0; i < MAX_SEGMENTS; ++i) { + const int qindex = vp9_get_qindex(&cm->seg, i, cm->base_qindex); + cm->y_dequant[i][0] = vp9_dc_quant(qindex, cm->y_dc_delta_q, + cm->bit_depth); + cm->y_dequant[i][1] = vp9_ac_quant(qindex, 0, cm->bit_depth); + cm->uv_dequant[i][0] = vp9_dc_quant(qindex, cm->uv_dc_delta_q, + cm->bit_depth); + cm->uv_dequant[i][1] = vp9_ac_quant(qindex, cm->uv_ac_delta_q, + cm->bit_depth); + } + } else { + const int qindex = cm->base_qindex; + // When segmentation is disabled, only the first value is used. The + // remaining are don't cares. + cm->y_dequant[0][0] = vp9_dc_quant(qindex, cm->y_dc_delta_q, cm->bit_depth); + cm->y_dequant[0][1] = vp9_ac_quant(qindex, 0, cm->bit_depth); + cm->uv_dequant[0][0] = vp9_dc_quant(qindex, cm->uv_dc_delta_q, + cm->bit_depth); + cm->uv_dequant[0][1] = vp9_ac_quant(qindex, cm->uv_ac_delta_q, + cm->bit_depth); + } +} + +static INTERP_FILTER read_interp_filter(struct vp9_read_bit_buffer *rb) { + const INTERP_FILTER literal_to_filter[] = { EIGHTTAP_SMOOTH, + EIGHTTAP, + EIGHTTAP_SHARP, + BILINEAR }; + return vp9_rb_read_bit(rb) ? SWITCHABLE + : literal_to_filter[vp9_rb_read_literal(rb, 2)]; +} + +void vp9_read_frame_size(struct vp9_read_bit_buffer *rb, + int *width, int *height) { + *width = vp9_rb_read_literal(rb, 16) + 1; + *height = vp9_rb_read_literal(rb, 16) + 1; +} + +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)) + vp9_read_frame_size(rb, &cm->display_width, &cm->display_height); +} + +static void resize_mv_buffer(VP9_COMMON *cm) { + vpx_free(cm->cur_frame->mvs); + cm->cur_frame->mi_rows = cm->mi_rows; + cm->cur_frame->mi_cols = cm->mi_cols; + cm->cur_frame->mvs = (MV_REF *)vpx_calloc(cm->mi_rows * cm->mi_cols, + sizeof(*cm->cur_frame->mvs)); +} + +static void resize_context_buffers(VP9_COMMON *cm, int width, int height) { +#if CONFIG_SIZE_LIMIT + if (width > DECODE_WIDTH_LIMIT || height > DECODE_HEIGHT_LIMIT) + vpx_internal_error(&cm->error, VPX_CODEC_CORRUPT_FRAME, + "Dimensions of %dx%d beyond allowed size of %dx%d.", + width, height, DECODE_WIDTH_LIMIT, DECODE_HEIGHT_LIMIT); +#endif + if (cm->width != width || cm->height != height) { + const int new_mi_rows = + ALIGN_POWER_OF_TWO(height, MI_SIZE_LOG2) >> MI_SIZE_LOG2; + const int new_mi_cols = + ALIGN_POWER_OF_TWO(width, MI_SIZE_LOG2) >> MI_SIZE_LOG2; + + // Allocations in vp9_alloc_context_buffers() depend on individual + // dimensions as well as the overall size. + if (new_mi_cols > cm->mi_cols || new_mi_rows > cm->mi_rows) { + if (vp9_alloc_context_buffers(cm, width, height)) + vpx_internal_error(&cm->error, VPX_CODEC_MEM_ERROR, + "Failed to allocate context buffers"); + } else { + vp9_set_mb_mi(cm, width, height); + } + vp9_init_context_buffers(cm); + cm->width = width; + cm->height = height; + } + if (cm->cur_frame->mvs == NULL || cm->mi_rows > cm->cur_frame->mi_rows || + cm->mi_cols > cm->cur_frame->mi_cols) { + resize_mv_buffer(cm); + } +} + +static void setup_frame_size(VP9_COMMON *cm, struct vp9_read_bit_buffer *rb) { + int width, height; + BufferPool *const pool = cm->buffer_pool; + vp9_read_frame_size(rb, &width, &height); + resize_context_buffers(cm, width, height); + setup_display_size(cm, rb); + + lock_buffer_pool(pool); + if (vp9_realloc_frame_buffer( + get_frame_new_buffer(cm), cm->width, cm->height, + cm->subsampling_x, cm->subsampling_y, +#if CONFIG_VP9_HIGHBITDEPTH + cm->use_highbitdepth, +#endif + VP9_DEC_BORDER_IN_PIXELS, + cm->byte_alignment, + &pool->frame_bufs[cm->new_fb_idx].raw_frame_buffer, pool->get_fb_cb, + pool->cb_priv)) { + unlock_buffer_pool(pool); + vpx_internal_error(&cm->error, VPX_CODEC_MEM_ERROR, + "Failed to allocate frame buffer"); + } + unlock_buffer_pool(pool); + + pool->frame_bufs[cm->new_fb_idx].buf.subsampling_x = cm->subsampling_x; + pool->frame_bufs[cm->new_fb_idx].buf.subsampling_y = cm->subsampling_y; + pool->frame_bufs[cm->new_fb_idx].buf.bit_depth = (unsigned int)cm->bit_depth; + pool->frame_bufs[cm->new_fb_idx].buf.color_space = cm->color_space; +} + +static INLINE int valid_ref_frame_img_fmt(vpx_bit_depth_t ref_bit_depth, + int ref_xss, int ref_yss, + vpx_bit_depth_t this_bit_depth, + int this_xss, int this_yss) { + return ref_bit_depth == this_bit_depth && ref_xss == this_xss && + ref_yss == this_yss; +} + +static void setup_frame_size_with_refs(VP9_COMMON *cm, + struct vp9_read_bit_buffer *rb) { + int width, height; + int found = 0, i; + int has_valid_ref_frame = 0; + BufferPool *const pool = cm->buffer_pool; + for (i = 0; i < REFS_PER_FRAME; ++i) { + if (vp9_rb_read_bit(rb)) { + YV12_BUFFER_CONFIG *const buf = cm->frame_refs[i].buf; + width = buf->y_crop_width; + height = buf->y_crop_height; + found = 1; + break; + } + } + + if (!found) + vp9_read_frame_size(rb, &width, &height); + + if (width <= 0 || height <= 0) + vpx_internal_error(&cm->error, VPX_CODEC_CORRUPT_FRAME, + "Invalid frame size"); + + // Check to make sure at least one of frames that this frame references + // has valid dimensions. + for (i = 0; i < REFS_PER_FRAME; ++i) { + RefBuffer *const ref_frame = &cm->frame_refs[i]; + has_valid_ref_frame |= valid_ref_frame_size(ref_frame->buf->y_crop_width, + ref_frame->buf->y_crop_height, + width, height); + } + if (!has_valid_ref_frame) + vpx_internal_error(&cm->error, VPX_CODEC_CORRUPT_FRAME, + "Referenced frame has invalid size"); + for (i = 0; i < REFS_PER_FRAME; ++i) { + RefBuffer *const ref_frame = &cm->frame_refs[i]; + if (!valid_ref_frame_img_fmt( + ref_frame->buf->bit_depth, + ref_frame->buf->subsampling_x, + ref_frame->buf->subsampling_y, + cm->bit_depth, + cm->subsampling_x, + cm->subsampling_y)) + vpx_internal_error(&cm->error, VPX_CODEC_CORRUPT_FRAME, + "Referenced frame has incompatible color format"); + } + + resize_context_buffers(cm, width, height); + setup_display_size(cm, rb); + + lock_buffer_pool(pool); + if (vp9_realloc_frame_buffer( + get_frame_new_buffer(cm), cm->width, cm->height, + cm->subsampling_x, cm->subsampling_y, +#if CONFIG_VP9_HIGHBITDEPTH + cm->use_highbitdepth, +#endif + VP9_DEC_BORDER_IN_PIXELS, + cm->byte_alignment, + &pool->frame_bufs[cm->new_fb_idx].raw_frame_buffer, pool->get_fb_cb, + pool->cb_priv)) { + unlock_buffer_pool(pool); + vpx_internal_error(&cm->error, VPX_CODEC_MEM_ERROR, + "Failed to allocate frame buffer"); + } + unlock_buffer_pool(pool); + + pool->frame_bufs[cm->new_fb_idx].buf.subsampling_x = cm->subsampling_x; + pool->frame_bufs[cm->new_fb_idx].buf.subsampling_y = cm->subsampling_y; + pool->frame_bufs[cm->new_fb_idx].buf.bit_depth = (unsigned int)cm->bit_depth; + pool->frame_bufs[cm->new_fb_idx].buf.color_space = cm->color_space; +} + +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++; + + if (cm->log2_tile_cols > 6) + vpx_internal_error(&cm->error, VPX_CODEC_CORRUPT_FRAME, + "Invalid number of tile columns"); + + // rows + cm->log2_tile_rows = vp9_rb_read_bit(rb); + if (cm->log2_tile_rows) + cm->log2_tile_rows += vp9_rb_read_bit(rb); +} + +typedef struct TileBuffer { + const uint8_t *data; + size_t size; + int col; // only used with multi-threaded decoding +} TileBuffer; + +// Reads the next tile returning its size and adjusting '*data' accordingly +// based on 'is_last'. +static void get_tile_buffer(const uint8_t *const data_end, + int is_last, + struct vpx_internal_error_info *error_info, + const uint8_t **data, + vpx_decrypt_cb decrypt_cb, void *decrypt_state, + TileBuffer *buf) { + 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"); + + if (decrypt_cb) { + uint8_t be_data[4]; + decrypt_cb(decrypt_state, *data, be_data, 4); + size = mem_get_be32(be_data); + } else { + size = mem_get_be32(*data); + } + *data += 4; + + if (size > (size_t)(data_end - *data)) + vpx_internal_error(error_info, VPX_CODEC_CORRUPT_FRAME, + "Truncated packet or corrupt tile size"); + } else { + size = data_end - *data; + } + + buf->data = *data; + buf->size = size; + + *data += size; +} + +static void get_tile_buffers(VP9Decoder *pbi, + const uint8_t *data, const uint8_t *data_end, + int tile_cols, int tile_rows, + TileBuffer (*tile_buffers)[1 << 6]) { + int r, c; + + for (r = 0; r < tile_rows; ++r) { + for (c = 0; c < tile_cols; ++c) { + const int is_last = (r == tile_rows - 1) && (c == tile_cols - 1); + TileBuffer *const buf = &tile_buffers[r][c]; + buf->col = c; + get_tile_buffer(data_end, is_last, &pbi->common.error, &data, + pbi->decrypt_cb, pbi->decrypt_state, buf); + } + } +} + +static const uint8_t *decode_tiles(VP9Decoder *pbi, + const uint8_t *data, + const uint8_t *data_end) { + VP9_COMMON *const cm = &pbi->common; + const VP9WorkerInterface *const winterface = vp9_get_worker_interface(); + const int aligned_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; + TileBuffer tile_buffers[4][1 << 6]; + int tile_row, tile_col; + int mi_row, mi_col; + TileData *tile_data = NULL; + + if (cm->lf.filter_level && !cm->skip_loop_filter && + pbi->lf_worker.data1 == NULL) { + CHECK_MEM_ERROR(cm, pbi->lf_worker.data1, + vpx_memalign(32, sizeof(LFWorkerData))); + pbi->lf_worker.hook = (VP9WorkerHook)vp9_loop_filter_worker; + if (pbi->max_threads > 1 && !winterface->reset(&pbi->lf_worker)) { + vpx_internal_error(&cm->error, VPX_CODEC_ERROR, + "Loop filter thread creation failed"); + } + } + + if (cm->lf.filter_level && !cm->skip_loop_filter) { + LFWorkerData *const lf_data = (LFWorkerData*)pbi->lf_worker.data1; + // Be sure to sync as we might be resuming after a failed frame decode. + winterface->sync(&pbi->lf_worker); + vp9_loop_filter_data_reset(lf_data, get_frame_new_buffer(cm), cm, + pbi->mb.plane); + } + + assert(tile_rows <= 4); + assert(tile_cols <= (1 << 6)); + + // Note: this memset assumes above_context[0], [1] and [2] + // are allocated as part of the same buffer. + memset(cm->above_context, 0, + sizeof(*cm->above_context) * MAX_MB_PLANE * 2 * aligned_cols); + + memset(cm->above_seg_context, 0, + sizeof(*cm->above_seg_context) * aligned_cols); + + get_tile_buffers(pbi, data, data_end, tile_cols, tile_rows, tile_buffers); + + if (pbi->tile_data == NULL || + (tile_cols * tile_rows) != pbi->total_tiles) { + vpx_free(pbi->tile_data); + CHECK_MEM_ERROR( + cm, + pbi->tile_data, + vpx_memalign(32, tile_cols * tile_rows * (sizeof(*pbi->tile_data)))); + pbi->total_tiles = tile_rows * tile_cols; + } + + // Load all tile information into tile_data. + for (tile_row = 0; tile_row < tile_rows; ++tile_row) { + for (tile_col = 0; tile_col < tile_cols; ++tile_col) { + TileInfo tile; + const TileBuffer *const buf = &tile_buffers[tile_row][tile_col]; + tile_data = pbi->tile_data + tile_cols * tile_row + tile_col; + tile_data->cm = cm; + tile_data->xd = pbi->mb; + tile_data->xd.corrupted = 0; + tile_data->xd.counts = cm->frame_parallel_decoding_mode ? + NULL : &cm->counts; + vp9_tile_init(&tile, tile_data->cm, tile_row, tile_col); + setup_token_decoder(buf->data, data_end, buf->size, &cm->error, + &tile_data->bit_reader, pbi->decrypt_cb, + pbi->decrypt_state); + init_macroblockd(cm, &tile_data->xd); + } + } + + for (tile_row = 0; tile_row < tile_rows; ++tile_row) { + TileInfo tile; + vp9_tile_set_row(&tile, cm, tile_row); + for (mi_row = tile.mi_row_start; mi_row < tile.mi_row_end; + mi_row += MI_BLOCK_SIZE) { + for (tile_col = 0; tile_col < tile_cols; ++tile_col) { + const int col = pbi->inv_tile_order ? + tile_cols - tile_col - 1 : tile_col; + tile_data = pbi->tile_data + tile_cols * tile_row + col; + vp9_tile_set_col(&tile, tile_data->cm, col); + 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_partition(pbi, &tile_data->xd, &tile, mi_row, + mi_col, &tile_data->bit_reader, BLOCK_64X64); + } + pbi->mb.corrupted |= tile_data->xd.corrupted; + if (pbi->mb.corrupted) + vpx_internal_error(&cm->error, VPX_CODEC_CORRUPT_FRAME, + "Failed to decode tile data"); + } + // Loopfilter one row. + if (cm->lf.filter_level && !cm->skip_loop_filter) { + 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 >= cm->mi_rows) continue; + + winterface->sync(&pbi->lf_worker); + lf_data->start = lf_start; + lf_data->stop = mi_row; + if (pbi->max_threads > 1) { + winterface->launch(&pbi->lf_worker); + } else { + winterface->execute(&pbi->lf_worker); + } + } + // After loopfiltering, the last 7 row pixels in each superblock row may + // still be changed by the longest loopfilter of the next superblock + // row. + if (pbi->frame_parallel_decode) + vp9_frameworker_broadcast(pbi->cur_buf, + mi_row << MI_BLOCK_SIZE_LOG2); + } + } + + // Loopfilter remaining rows in the frame. + if (cm->lf.filter_level && !cm->skip_loop_filter) { + LFWorkerData *const lf_data = (LFWorkerData*)pbi->lf_worker.data1; + winterface->sync(&pbi->lf_worker); + lf_data->start = lf_data->stop; + lf_data->stop = cm->mi_rows; + winterface->execute(&pbi->lf_worker); + } + + // Get last tile data. + tile_data = pbi->tile_data + tile_cols * tile_rows - 1; + + if (pbi->frame_parallel_decode) + vp9_frameworker_broadcast(pbi->cur_buf, INT_MAX); + return vp9_reader_find_end(&tile_data->bit_reader); +} + +static int tile_worker_hook(TileWorkerData *const tile_data, + const TileInfo *const tile) { + int mi_row, mi_col; + + if (setjmp(tile_data->error_info.jmp)) { + tile_data->error_info.setjmp = 0; + tile_data->xd.corrupted = 1; + return 0; + } + + tile_data->error_info.setjmp = 1; + tile_data->xd.error_info = &tile_data->error_info; + + 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_partition(tile_data->pbi, &tile_data->xd, + tile, mi_row, mi_col, &tile_data->bit_reader, + BLOCK_64X64); + } + } + return !tile_data->xd.corrupted; +} + +// sorts in descending order +static int compare_tile_buffers(const void *a, const void *b) { + const TileBuffer *const buf1 = (const TileBuffer*)a; + const TileBuffer *const buf2 = (const TileBuffer*)b; + return (int)(buf2->size - buf1->size); +} + +static const uint8_t *decode_tiles_mt(VP9Decoder *pbi, + const uint8_t *data, + const uint8_t *data_end) { + VP9_COMMON *const cm = &pbi->common; + const VP9WorkerInterface *const winterface = vp9_get_worker_interface(); + const uint8_t *bit_reader_end = NULL; + 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->max_threads & ~1, tile_cols); + TileBuffer tile_buffers[1][1 << 6]; + int n; + int final_worker = -1; + + assert(tile_cols <= (1 << 6)); + assert(tile_rows == 1); + (void)tile_rows; + + // TODO(jzern): See if we can remove the restriction of passing in max + // threads to the decoder. + if (pbi->num_tile_workers == 0) { + const int num_threads = pbi->max_threads & ~1; + int i; + // TODO(jzern): Allocate one less worker, as in the current code we only + // use num_threads - 1 workers. + CHECK_MEM_ERROR(cm, pbi->tile_workers, + vpx_malloc(num_threads * sizeof(*pbi->tile_workers))); + // Ensure tile data offsets will be properly aligned. This may fail on + // platforms without DECLARE_ALIGNED(). + assert((sizeof(*pbi->tile_worker_data) % 16) == 0); + CHECK_MEM_ERROR(cm, pbi->tile_worker_data, + vpx_memalign(32, num_threads * + sizeof(*pbi->tile_worker_data))); + CHECK_MEM_ERROR(cm, pbi->tile_worker_info, + vpx_malloc(num_threads * sizeof(*pbi->tile_worker_info))); + for (i = 0; i < num_threads; ++i) { + VP9Worker *const worker = &pbi->tile_workers[i]; + ++pbi->num_tile_workers; + + winterface->init(worker); + if (i < num_threads - 1 && !winterface->reset(worker)) { + vpx_internal_error(&cm->error, VPX_CODEC_ERROR, + "Tile decoder thread creation failed"); + } + } + } + + // Reset tile decoding hook + for (n = 0; n < num_workers; ++n) { + VP9Worker *const worker = &pbi->tile_workers[n]; + winterface->sync(worker); + worker->hook = (VP9WorkerHook)tile_worker_hook; + worker->data1 = &pbi->tile_worker_data[n]; + worker->data2 = &pbi->tile_worker_info[n]; + } + + // Note: this memset assumes above_context[0], [1] and [2] + // are allocated as part of the same buffer. + memset(cm->above_context, 0, + sizeof(*cm->above_context) * MAX_MB_PLANE * 2 * aligned_mi_cols); + memset(cm->above_seg_context, 0, + sizeof(*cm->above_seg_context) * aligned_mi_cols); + + // Load tile data into tile_buffers + get_tile_buffers(pbi, data, data_end, tile_cols, tile_rows, tile_buffers); + + // Sort the buffers based on size in descending order. + qsort(tile_buffers[0], tile_cols, sizeof(tile_buffers[0][0]), + compare_tile_buffers); + + // Rearrange the tile buffers such that per-tile group the largest, and + // presumably the most difficult, tile will be decoded in the main thread. + // This should help minimize the number of instances where the main thread is + // waiting for a worker to complete. + { + int group_start = 0; + while (group_start < tile_cols) { + const TileBuffer largest = tile_buffers[0][group_start]; + const int group_end = MIN(group_start + num_workers, tile_cols) - 1; + memmove(tile_buffers[0] + group_start, tile_buffers[0] + group_start + 1, + (group_end - group_start) * sizeof(tile_buffers[0][0])); + tile_buffers[0][group_end] = largest; + group_start = group_end + 1; + } + } + + // Initialize thread frame counts. + if (!cm->frame_parallel_decoding_mode) { + int i; + + for (i = 0; i < num_workers; ++i) { + TileWorkerData *const tile_data = + (TileWorkerData*)pbi->tile_workers[i].data1; + vp9_zero(tile_data->counts); + } + } + + n = 0; + while (n < tile_cols) { + int i; + for (i = 0; i < num_workers && n < tile_cols; ++i) { + VP9Worker *const worker = &pbi->tile_workers[i]; + TileWorkerData *const tile_data = (TileWorkerData*)worker->data1; + TileInfo *const tile = (TileInfo*)worker->data2; + TileBuffer *const buf = &tile_buffers[0][n]; + + tile_data->pbi = pbi; + tile_data->xd = pbi->mb; + tile_data->xd.corrupted = 0; + tile_data->xd.counts = cm->frame_parallel_decoding_mode ? + 0 : &tile_data->counts; + vp9_tile_init(tile, cm, 0, buf->col); + setup_token_decoder(buf->data, data_end, buf->size, &cm->error, + &tile_data->bit_reader, pbi->decrypt_cb, + pbi->decrypt_state); + init_macroblockd(cm, &tile_data->xd); + + worker->had_error = 0; + if (i == num_workers - 1 || n == tile_cols - 1) { + winterface->execute(worker); + } else { + winterface->launch(worker); + } + + if (buf->col == tile_cols - 1) { + final_worker = i; + } + + ++n; + } + + for (; i > 0; --i) { + VP9Worker *const worker = &pbi->tile_workers[i - 1]; + // TODO(jzern): The tile may have specific error data associated with + // its vpx_internal_error_info which could be propagated to the main info + // in cm. Additionally once the threads have been synced and an error is + // detected, there's no point in continuing to decode tiles. + pbi->mb.corrupted |= !winterface->sync(worker); + } + if (final_worker > -1) { + TileWorkerData *const tile_data = + (TileWorkerData*)pbi->tile_workers[final_worker].data1; + bit_reader_end = vp9_reader_find_end(&tile_data->bit_reader); + final_worker = -1; + } + + // Accumulate thread frame counts. + if (n >= tile_cols && !cm->frame_parallel_decoding_mode) { + for (i = 0; i < num_workers; ++i) { + TileWorkerData *const tile_data = + (TileWorkerData*)pbi->tile_workers[i].data1; + vp9_accumulate_frame_counts(cm, &tile_data->counts, 1); + } + } + } + + return bit_reader_end; +} + +static void error_handler(void *data) { + VP9_COMMON *const cm = (VP9_COMMON *)data; + vpx_internal_error(&cm->error, VPX_CODEC_CORRUPT_FRAME, "Truncated packet"); +} + +int vp9_read_sync_code(struct vp9_read_bit_buffer *const rb) { + return 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; +} + +BITSTREAM_PROFILE vp9_read_profile(struct vp9_read_bit_buffer *rb) { + int profile = vp9_rb_read_bit(rb); + profile |= vp9_rb_read_bit(rb) << 1; + if (profile > 2) + profile += vp9_rb_read_bit(rb); + return (BITSTREAM_PROFILE) profile; +} + +static void read_bitdepth_colorspace_sampling( + VP9_COMMON *cm, struct vp9_read_bit_buffer *rb) { + if (cm->profile >= PROFILE_2) { + cm->bit_depth = vp9_rb_read_bit(rb) ? VPX_BITS_12 : VPX_BITS_10; +#if CONFIG_VP9_HIGHBITDEPTH + cm->use_highbitdepth = 1; +#endif + } else { + cm->bit_depth = VPX_BITS_8; +#if CONFIG_VP9_HIGHBITDEPTH + cm->use_highbitdepth = 0; +#endif + } + cm->color_space = vp9_rb_read_literal(rb, 3); + if (cm->color_space != VPX_CS_SRGB) { + vp9_rb_read_bit(rb); // [16,235] (including xvycc) vs [0,255] range + if (cm->profile == PROFILE_1 || cm->profile == PROFILE_3) { + cm->subsampling_x = vp9_rb_read_bit(rb); + cm->subsampling_y = vp9_rb_read_bit(rb); + if (cm->subsampling_x == 1 && cm->subsampling_y == 1) + vpx_internal_error(&cm->error, VPX_CODEC_UNSUP_BITSTREAM, + "4:2:0 color not supported in profile 1 or 3"); + if (vp9_rb_read_bit(rb)) + vpx_internal_error(&cm->error, VPX_CODEC_UNSUP_BITSTREAM, + "Reserved bit set"); + } else { + cm->subsampling_y = cm->subsampling_x = 1; + } + } else { + if (cm->profile == PROFILE_1 || cm->profile == PROFILE_3) { + // Note if colorspace is SRGB then 4:4:4 chroma sampling is assumed. + // 4:2:2 or 4:4:0 chroma sampling is not allowed. + cm->subsampling_y = cm->subsampling_x = 0; + if (vp9_rb_read_bit(rb)) + vpx_internal_error(&cm->error, VPX_CODEC_UNSUP_BITSTREAM, + "Reserved bit set"); + } else { + vpx_internal_error(&cm->error, VPX_CODEC_UNSUP_BITSTREAM, + "4:4:4 color not supported in profile 0 or 2"); + } + } +} + +static size_t read_uncompressed_header(VP9Decoder *pbi, + struct vp9_read_bit_buffer *rb) { + VP9_COMMON *const cm = &pbi->common; + BufferPool *const pool = cm->buffer_pool; + RefCntBuffer *const frame_bufs = pool->frame_bufs; + int i, mask, ref_index = 0; + size_t sz; + + 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->profile = vp9_read_profile(rb); + + if (cm->profile >= MAX_PROFILES) + vpx_internal_error(&cm->error, VPX_CODEC_UNSUP_BITSTREAM, + "Unsupported bitstream profile"); + + cm->show_existing_frame = vp9_rb_read_bit(rb); + if (cm->show_existing_frame) { + // Show an existing frame directly. + const int frame_to_show = cm->ref_frame_map[vp9_rb_read_literal(rb, 3)]; + lock_buffer_pool(pool); + if (frame_to_show < 0 || frame_bufs[frame_to_show].ref_count < 1) { + unlock_buffer_pool(pool); + vpx_internal_error(&cm->error, VPX_CODEC_UNSUP_BITSTREAM, + "Buffer %d does not contain a decoded frame", + frame_to_show); + } + + ref_cnt_fb(frame_bufs, &cm->new_fb_idx, frame_to_show); + unlock_buffer_pool(pool); + pbi->refresh_frame_flags = 0; + cm->lf.filter_level = 0; + cm->show_frame = 1; + + if (pbi->frame_parallel_decode) { + for (i = 0; i < REF_FRAMES; ++i) + cm->next_ref_frame_map[i] = cm->ref_frame_map[i]; + } + 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) { + if (!vp9_read_sync_code(rb)) + vpx_internal_error(&cm->error, VPX_CODEC_UNSUP_BITSTREAM, + "Invalid frame sync code"); + + read_bitdepth_colorspace_sampling(cm, rb); + pbi->refresh_frame_flags = (1 << REF_FRAMES) - 1; + + for (i = 0; i < REFS_PER_FRAME; ++i) { + cm->frame_refs[i].idx = INVALID_IDX; + cm->frame_refs[i].buf = NULL; + } + + setup_frame_size(cm, rb); + if (pbi->need_resync) { + memset(&cm->ref_frame_map, -1, sizeof(cm->ref_frame_map)); + pbi->need_resync = 0; + } + } 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) { + if (!vp9_read_sync_code(rb)) + vpx_internal_error(&cm->error, VPX_CODEC_UNSUP_BITSTREAM, + "Invalid frame sync code"); + if (cm->profile > PROFILE_0) { + read_bitdepth_colorspace_sampling(cm, rb); + } else { + // NOTE: The intra-only frame header does not include the specification + // of either the color format or color sub-sampling in profile 0. VP9 + // specifies that the default color format should be YUV 4:2:0 in this + // case (normative). + cm->color_space = VPX_CS_BT_601; + cm->subsampling_y = cm->subsampling_x = 1; + cm->bit_depth = VPX_BITS_8; +#if CONFIG_VP9_HIGHBITDEPTH + cm->use_highbitdepth = 0; +#endif + } + + pbi->refresh_frame_flags = vp9_rb_read_literal(rb, REF_FRAMES); + setup_frame_size(cm, rb); + if (pbi->need_resync) { + memset(&cm->ref_frame_map, -1, sizeof(cm->ref_frame_map)); + pbi->need_resync = 0; + } + } else if (pbi->need_resync != 1) { /* Skip if need resync */ + pbi->refresh_frame_flags = vp9_rb_read_literal(rb, REF_FRAMES); + for (i = 0; i < REFS_PER_FRAME; ++i) { + const int ref = vp9_rb_read_literal(rb, REF_FRAMES_LOG2); + const int idx = cm->ref_frame_map[ref]; + RefBuffer *const ref_frame = &cm->frame_refs[i]; + ref_frame->idx = idx; + ref_frame->buf = &frame_bufs[idx].buf; + cm->ref_frame_sign_bias[LAST_FRAME + i] = vp9_rb_read_bit(rb); + } + + setup_frame_size_with_refs(cm, rb); + + cm->allow_high_precision_mv = vp9_rb_read_bit(rb); + cm->interp_filter = read_interp_filter(rb); + + for (i = 0; i < REFS_PER_FRAME; ++i) { + RefBuffer *const ref_buf = &cm->frame_refs[i]; +#if CONFIG_VP9_HIGHBITDEPTH + vp9_setup_scale_factors_for_frame(&ref_buf->sf, + ref_buf->buf->y_crop_width, + ref_buf->buf->y_crop_height, + cm->width, cm->height, + cm->use_highbitdepth); +#else + vp9_setup_scale_factors_for_frame(&ref_buf->sf, + ref_buf->buf->y_crop_width, + ref_buf->buf->y_crop_height, + cm->width, cm->height); +#endif + } + } + } +#if CONFIG_VP9_HIGHBITDEPTH + get_frame_new_buffer(cm)->bit_depth = cm->bit_depth; +#endif + get_frame_new_buffer(cm)->color_space = cm->color_space; + + if (pbi->need_resync) { + vpx_internal_error(&cm->error, VPX_CODEC_CORRUPT_FRAME, + "Keyframe / intra-only frame required to reset decoder" + " state"); + } + + 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, FRAME_CONTEXTS_LOG2); + + // Generate next_ref_frame_map. + lock_buffer_pool(pool); + for (mask = pbi->refresh_frame_flags; mask; mask >>= 1) { + if (mask & 1) { + cm->next_ref_frame_map[ref_index] = cm->new_fb_idx; + ++frame_bufs[cm->new_fb_idx].ref_count; + } else { + cm->next_ref_frame_map[ref_index] = cm->ref_frame_map[ref_index]; + } + // Current thread holds the reference frame. + if (cm->ref_frame_map[ref_index] >= 0) + ++frame_bufs[cm->ref_frame_map[ref_index]].ref_count; + ++ref_index; + } + + for (; ref_index < REF_FRAMES; ++ref_index) { + cm->next_ref_frame_map[ref_index] = cm->ref_frame_map[ref_index]; + // Current thread holds the reference frame. + if (cm->ref_frame_map[ref_index] >= 0) + ++frame_bufs[cm->ref_frame_map[ref_index]].ref_count; + } + unlock_buffer_pool(pool); + pbi->hold_ref_buf = 1; + + 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_segmentation_dequant(cm); + + 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(VP9Decoder *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, pbi->decrypt_cb, + pbi->decrypt_state)) + 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_mode_probs(&fc->tx_probs, &r); + read_coef_probs(fc, cm->tx_mode, &r); + + for (k = 0; k < SKIP_CONTEXTS; ++k) + vp9_diff_update_prob(&r, &fc->skip_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->interp_filter == 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]); + + cm->reference_mode = read_frame_reference_mode(cm, &r); + if (cm->reference_mode != SINGLE_REFERENCE) + setup_compound_reference_mode(cm); + read_frame_reference_mode_probs(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[j][i]); + + read_mv_probs(nmvc, cm->allow_high_precision_mv, &r); + } + + return vp9_reader_has_error(&r); +} + +#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.skip, zero_counts.skip, sizeof(cm->counts.skip))); + assert(!memcmp(&cm->counts.mv, &zero_counts.mv, sizeof(cm->counts.mv))); +} +#endif // NDEBUG + +static struct vp9_read_bit_buffer* init_read_bit_buffer( + VP9Decoder *pbi, + struct vp9_read_bit_buffer *rb, + const uint8_t *data, + const uint8_t *data_end, + uint8_t *clear_data /* buffer size MAX_VP9_HEADER_SIZE */) { + rb->bit_offset = 0; + rb->error_handler = error_handler; + rb->error_handler_data = &pbi->common; + if (pbi->decrypt_cb) { + const int n = (int)MIN(MAX_VP9_HEADER_SIZE, data_end - data); + pbi->decrypt_cb(pbi->decrypt_state, data, clear_data, n); + rb->bit_buffer = clear_data; + rb->bit_buffer_end = clear_data + n; + } else { + rb->bit_buffer = data; + rb->bit_buffer_end = data_end; + } + return rb; +} + +void vp9_decode_frame(VP9Decoder *pbi, + const uint8_t *data, const uint8_t *data_end, + const uint8_t **p_data_end) { + VP9_COMMON *const cm = &pbi->common; + MACROBLOCKD *const xd = &pbi->mb; + struct vp9_read_bit_buffer rb = { NULL, NULL, 0, NULL, 0}; + int context_updated = 0; + uint8_t clear_data[MAX_VP9_HEADER_SIZE]; + const size_t first_partition_size = read_uncompressed_header(pbi, + init_read_bit_buffer(pbi, &rb, data, data_end, clear_data)); + 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); + xd->cur_buf = new_fb; + + if (!first_partition_size) { + // showing a frame directly + *p_data_end = data + (cm->profile <= PROFILE_2 ? 1 : 2); + return; + } + + 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"); + + cm->use_prev_frame_mvs = !cm->error_resilient_mode && + cm->width == cm->last_width && + cm->height == cm->last_height && + !cm->intra_only && + cm->last_show_frame; + + vp9_setup_block_planes(xd, cm->subsampling_x, cm->subsampling_y); + + *cm->fc = cm->frame_contexts[cm->frame_context_idx]; + if (!cm->fc->initialized) + vpx_internal_error(&cm->error, VPX_CODEC_CORRUPT_FRAME, + "Uninitialized entropy context."); + + vp9_zero(cm->counts); + + xd->corrupted = 0; + new_fb->corrupted = read_compressed_header(pbi, data, first_partition_size); + if (new_fb->corrupted) + vpx_internal_error(&cm->error, VPX_CODEC_CORRUPT_FRAME, + "Decode failed. Frame data header is corrupted."); + + if (cm->lf.filter_level && !cm->skip_loop_filter) { + vp9_loop_filter_frame_init(cm, cm->lf.filter_level); + } + + // If encoded in frame parallel mode, frame context is ready after decoding + // the frame header. + if (pbi->frame_parallel_decode && cm->frame_parallel_decoding_mode) { + VP9Worker *const worker = pbi->frame_worker_owner; + FrameWorkerData *const frame_worker_data = worker->data1; + if (cm->refresh_frame_context) { + context_updated = 1; + cm->frame_contexts[cm->frame_context_idx] = *cm->fc; + } + vp9_frameworker_lock_stats(worker); + pbi->cur_buf->row = -1; + pbi->cur_buf->col = -1; + frame_worker_data->frame_context_ready = 1; + // Signal the main thread that context is ready. + vp9_frameworker_signal_stats(worker); + vp9_frameworker_unlock_stats(worker); + } + + if (pbi->max_threads > 1 && tile_rows == 1 && tile_cols > 1) { + // Multi-threaded tile decoder + *p_data_end = decode_tiles_mt(pbi, data + first_partition_size, data_end); + if (!xd->corrupted) { + if (!cm->skip_loop_filter) { + // If multiple threads are used to decode tiles, then we use those + // threads to do parallel loopfiltering. + vp9_loop_filter_frame_mt(new_fb, cm, pbi->mb.plane, + cm->lf.filter_level, 0, 0, pbi->tile_workers, + pbi->num_tile_workers, &pbi->lf_row_sync); + } + } else { + vpx_internal_error(&cm->error, VPX_CODEC_CORRUPT_FRAME, + "Decode failed. Frame data is corrupted."); + + } + } else { + *p_data_end = decode_tiles(pbi, data + first_partition_size, data_end); + } + + if (!xd->corrupted) { + 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); + } + } else { + vpx_internal_error(&cm->error, VPX_CODEC_CORRUPT_FRAME, + "Decode failed. Frame data is corrupted."); + } + + // Non frame parallel update frame context here. + if (cm->refresh_frame_context && !context_updated) + cm->frame_contexts[cm->frame_context_idx] = *cm->fc; +} + +static void build_mc_border(const uint8_t *src, int src_stride, + uint8_t *dst, int dst_stride, + int x, int y, int b_w, int b_h, int w, int h) { + // Get a pointer to the start of the real data for this row. + const uint8_t *ref_row = src - x - y * src_stride; + + if (y >= h) + ref_row += (h - 1) * src_stride; + else if (y > 0) + ref_row += y * src_stride; + + do { + int right = 0, copy; + int left = x < 0 ? -x : 0; + + if (left > b_w) + left = b_w; + + if (x + b_w > w) + right = x + b_w - w; + + if (right > b_w) + right = b_w; + + copy = b_w - left - right; + + if (left) + memset(dst, ref_row[0], left); + + if (copy) + memcpy(dst + left, ref_row + x + left, copy); + + if (right) + memset(dst + left + copy, ref_row[w - 1], right); + + dst += dst_stride; + ++y; + + if (y > 0 && y < h) + ref_row += src_stride; + } while (--b_h); +} + +#if CONFIG_VP9_HIGHBITDEPTH +static void high_build_mc_border(const uint8_t *src8, int src_stride, + uint16_t *dst, int dst_stride, + int x, int y, int b_w, int b_h, + int w, int h) { + // Get a pointer to the start of the real data for this row. + const uint16_t *src = CONVERT_TO_SHORTPTR(src8); + const uint16_t *ref_row = src - x - y * src_stride; + + if (y >= h) + ref_row += (h - 1) * src_stride; + else if (y > 0) + ref_row += y * src_stride; + + do { + int right = 0, copy; + int left = x < 0 ? -x : 0; + + if (left > b_w) + left = b_w; + + if (x + b_w > w) + right = x + b_w - w; + + if (right > b_w) + right = b_w; + + copy = b_w - left - right; + + if (left) + vpx_memset16(dst, ref_row[0], left); + + if (copy) + memcpy(dst + left, ref_row + x + left, copy * sizeof(uint16_t)); + + if (right) + vpx_memset16(dst + left + copy, ref_row[w - 1], right); + + dst += dst_stride; + ++y; + + if (y > 0 && y < h) + ref_row += src_stride; + } while (--b_h); +} +#endif // CONFIG_VP9_HIGHBITDEPTH + +#if CONFIG_VP9_HIGHBITDEPTH +static void extend_and_predict(const uint8_t *buf_ptr1, int pre_buf_stride, + int x0, int y0, int b_w, int b_h, + int frame_width, int frame_height, + int border_offset, + uint8_t *const dst, int dst_buf_stride, + int subpel_x, int subpel_y, + const InterpKernel *kernel, + const struct scale_factors *sf, + MACROBLOCKD *xd, + int w, int h, int ref, int xs, int ys) { + DECLARE_ALIGNED(16, uint16_t, mc_buf_high[80 * 2 * 80 * 2]); + const uint8_t *buf_ptr; + + if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) { + high_build_mc_border(buf_ptr1, pre_buf_stride, mc_buf_high, b_w, + x0, y0, b_w, b_h, frame_width, frame_height); + buf_ptr = CONVERT_TO_BYTEPTR(mc_buf_high) + border_offset; + } else { + build_mc_border(buf_ptr1, pre_buf_stride, (uint8_t *)mc_buf_high, b_w, + x0, y0, b_w, b_h, frame_width, frame_height); + buf_ptr = ((uint8_t *)mc_buf_high) + border_offset; + } + + if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) { + high_inter_predictor(buf_ptr, b_w, dst, dst_buf_stride, subpel_x, + subpel_y, sf, w, h, ref, kernel, xs, ys, xd->bd); + } else { + inter_predictor(buf_ptr, b_w, dst, dst_buf_stride, subpel_x, + subpel_y, sf, w, h, ref, kernel, xs, ys); + } +} +#else +static void extend_and_predict(const uint8_t *buf_ptr1, int pre_buf_stride, + int x0, int y0, int b_w, int b_h, + int frame_width, int frame_height, + int border_offset, + uint8_t *const dst, int dst_buf_stride, + int subpel_x, int subpel_y, + const InterpKernel *kernel, + const struct scale_factors *sf, + int w, int h, int ref, int xs, int ys) { + DECLARE_ALIGNED(16, uint8_t, mc_buf[80 * 2 * 80 * 2]); + const uint8_t *buf_ptr; + + build_mc_border(buf_ptr1, pre_buf_stride, mc_buf, b_w, + x0, y0, b_w, b_h, frame_width, frame_height); + buf_ptr = mc_buf + border_offset; + + inter_predictor(buf_ptr, b_w, dst, dst_buf_stride, subpel_x, + subpel_y, sf, w, h, ref, kernel, xs, ys); +} +#endif // CONFIG_VP9_HIGHBITDEPTH + +static void dec_build_inter_predictors(VP9Decoder *const pbi, MACROBLOCKD *xd, + int plane, int bw, int bh, int x, + int y, int w, int h, int mi_x, int mi_y, + const InterpKernel *kernel, + const struct scale_factors *sf, + struct buf_2d *pre_buf, + struct buf_2d *dst_buf, const MV* mv, + RefCntBuffer *ref_frame_buf, + int is_scaled, int ref) { + struct macroblockd_plane *const pd = &xd->plane[plane]; + uint8_t *const dst = dst_buf->buf + dst_buf->stride * y + x; + MV32 scaled_mv; + int xs, ys, x0, y0, x0_16, y0_16, frame_width, frame_height, + buf_stride, subpel_x, subpel_y; + uint8_t *ref_frame, *buf_ptr; + + // Get reference frame pointer, width and height. + if (plane == 0) { + frame_width = ref_frame_buf->buf.y_crop_width; + frame_height = ref_frame_buf->buf.y_crop_height; + ref_frame = ref_frame_buf->buf.y_buffer; + } else { + frame_width = ref_frame_buf->buf.uv_crop_width; + frame_height = ref_frame_buf->buf.uv_crop_height; + ref_frame = plane == 1 ? ref_frame_buf->buf.u_buffer + : ref_frame_buf->buf.v_buffer; + } + + if (is_scaled) { + const MV mv_q4 = clamp_mv_to_umv_border_sb(xd, mv, bw, bh, + pd->subsampling_x, + pd->subsampling_y); + // Co-ordinate of containing block to pixel precision. + int x_start = (-xd->mb_to_left_edge >> (3 + pd->subsampling_x)); + int y_start = (-xd->mb_to_top_edge >> (3 + pd->subsampling_y)); + + // Co-ordinate of the block to 1/16th pixel precision. + x0_16 = (x_start + x) << SUBPEL_BITS; + y0_16 = (y_start + y) << SUBPEL_BITS; + + // Co-ordinate of current block in reference frame + // to 1/16th pixel precision. + x0_16 = sf->scale_value_x(x0_16, sf); + y0_16 = sf->scale_value_y(y0_16, sf); + + // Map the top left corner of the block into the reference frame. + x0 = sf->scale_value_x(x_start + x, sf); + y0 = sf->scale_value_y(y_start + y, sf); + + // Scale the MV and incorporate the sub-pixel offset of the block + // in the reference frame. + scaled_mv = vp9_scale_mv(&mv_q4, mi_x + x, mi_y + y, sf); + xs = sf->x_step_q4; + ys = sf->y_step_q4; + } else { + // Co-ordinate of containing block to pixel precision. + x0 = (-xd->mb_to_left_edge >> (3 + pd->subsampling_x)) + x; + y0 = (-xd->mb_to_top_edge >> (3 + pd->subsampling_y)) + y; + + // Co-ordinate of the block to 1/16th pixel precision. + x0_16 = x0 << SUBPEL_BITS; + y0_16 = y0 << SUBPEL_BITS; + + scaled_mv.row = mv->row * (1 << (1 - pd->subsampling_y)); + scaled_mv.col = mv->col * (1 << (1 - pd->subsampling_x)); + xs = ys = 16; + } + subpel_x = scaled_mv.col & SUBPEL_MASK; + subpel_y = scaled_mv.row & SUBPEL_MASK; + + // Calculate the top left corner of the best matching block in the + // reference frame. + x0 += scaled_mv.col >> SUBPEL_BITS; + y0 += scaled_mv.row >> SUBPEL_BITS; + x0_16 += scaled_mv.col; + y0_16 += scaled_mv.row; + + // Get reference block pointer. + buf_ptr = ref_frame + y0 * pre_buf->stride + x0; + buf_stride = pre_buf->stride; + + // Do border extension if there is motion or the + // width/height is not a multiple of 8 pixels. + if (is_scaled || scaled_mv.col || scaled_mv.row || + (frame_width & 0x7) || (frame_height & 0x7)) { + int y1 = (y0_16 + (h - 1) * ys) >> SUBPEL_BITS; + + // Get reference block bottom right horizontal coordinate. + int x1 = (x0_16 + (w - 1) * xs) >> SUBPEL_BITS; + int x_pad = 0, y_pad = 0; + + if (subpel_x || (sf->x_step_q4 != SUBPEL_SHIFTS)) { + x0 -= VP9_INTERP_EXTEND - 1; + x1 += VP9_INTERP_EXTEND; + x_pad = 1; + } + + if (subpel_y || (sf->y_step_q4 != SUBPEL_SHIFTS)) { + y0 -= VP9_INTERP_EXTEND - 1; + y1 += VP9_INTERP_EXTEND; + y_pad = 1; + } + + // Wait until reference block is ready. Pad 7 more pixels as last 7 + // pixels of each superblock row can be changed by next superblock row. + if (pbi->frame_parallel_decode) + vp9_frameworker_wait(pbi->frame_worker_owner, ref_frame_buf, + MAX(0, (y1 + 7)) << (plane == 0 ? 0 : 1)); + + // Skip border extension if block is inside the frame. + if (x0 < 0 || x0 > frame_width - 1 || x1 < 0 || x1 > frame_width - 1 || + y0 < 0 || y0 > frame_height - 1 || y1 < 0 || y1 > frame_height - 1) { + // Extend the border. + const uint8_t *const buf_ptr1 = ref_frame + y0 * buf_stride + x0; + const int b_w = x1 - x0 + 1; + const int b_h = y1 - y0 + 1; + const int border_offset = y_pad * 3 * b_w + x_pad * 3; + + extend_and_predict(buf_ptr1, buf_stride, x0, y0, b_w, b_h, + frame_width, frame_height, border_offset, + dst, dst_buf->stride, + subpel_x, subpel_y, + kernel, sf, +#if CONFIG_VP9_HIGHBITDEPTH + xd, +#endif + w, h, ref, xs, ys); + return; + } + } else { + // Wait until reference block is ready. Pad 7 more pixels as last 7 + // pixels of each superblock row can be changed by next superblock row. + if (pbi->frame_parallel_decode) { + const int y1 = (y0_16 + (h - 1) * ys) >> SUBPEL_BITS; + vp9_frameworker_wait(pbi->frame_worker_owner, ref_frame_buf, + MAX(0, (y1 + 7)) << (plane == 0 ? 0 : 1)); + } + } +#if CONFIG_VP9_HIGHBITDEPTH + if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) { + high_inter_predictor(buf_ptr, buf_stride, dst, dst_buf->stride, subpel_x, + subpel_y, sf, w, h, ref, kernel, xs, ys, xd->bd); + } else { + inter_predictor(buf_ptr, buf_stride, dst, dst_buf->stride, subpel_x, + subpel_y, sf, w, h, ref, kernel, xs, ys); + } +#else + inter_predictor(buf_ptr, buf_stride, dst, dst_buf->stride, subpel_x, + subpel_y, sf, w, h, ref, kernel, xs, ys); +#endif // CONFIG_VP9_HIGHBITDEPTH +} + +void vp9_dec_build_inter_predictors_sb(VP9Decoder *const pbi, MACROBLOCKD *xd, + int mi_row, int mi_col, + BLOCK_SIZE bsize) { + int plane; + const int mi_x = mi_col * MI_SIZE; + const int mi_y = mi_row * MI_SIZE; + const MODE_INFO *mi = xd->mi[0]; + const InterpKernel *kernel = vp9_get_interp_kernel(mi->mbmi.interp_filter); + const BLOCK_SIZE sb_type = mi->mbmi.sb_type; + const int is_compound = has_second_ref(&mi->mbmi); + + for (plane = 0; plane < MAX_MB_PLANE; ++plane) { + const BLOCK_SIZE plane_bsize = get_plane_block_size(bsize, + &xd->plane[plane]); + struct macroblockd_plane *const pd = &xd->plane[plane]; + struct buf_2d *const dst_buf = &pd->dst; + const int num_4x4_w = num_4x4_blocks_wide_lookup[plane_bsize]; + const int num_4x4_h = num_4x4_blocks_high_lookup[plane_bsize]; + + const int bw = 4 * num_4x4_w; + const int bh = 4 * num_4x4_h; + int ref; + + for (ref = 0; ref < 1 + is_compound; ++ref) { + const struct scale_factors *const sf = &xd->block_refs[ref]->sf; + struct buf_2d *const pre_buf = &pd->pre[ref]; + const int idx = xd->block_refs[ref]->idx; + BufferPool *const pool = pbi->common.buffer_pool; + RefCntBuffer *const ref_frame_buf = &pool->frame_bufs[idx]; + const int is_scaled = vp9_is_scaled(sf); + + if (sb_type < BLOCK_8X8) { + int i = 0, x, y; + assert(bsize == BLOCK_8X8); + for (y = 0; y < num_4x4_h; ++y) { + for (x = 0; x < num_4x4_w; ++x) { + const MV mv = average_split_mvs(pd, mi, ref, i++); + dec_build_inter_predictors(pbi, xd, plane, bw, bh, + 4 * x, 4 * y, 4, 4, mi_x, mi_y, kernel, + sf, pre_buf, dst_buf, &mv, + ref_frame_buf, is_scaled, ref); + } + } + } else { + const MV mv = mi->mbmi.mv[ref].as_mv; + dec_build_inter_predictors(pbi, xd, plane, bw, bh, + 0, 0, bw, bh, mi_x, mi_y, kernel, + sf, pre_buf, dst_buf, &mv, ref_frame_buf, + is_scaled, ref); + } + } + } +} |