diff options
Diffstat (limited to 'media/libvpx/libvpx/vp9/decoder/vp9_decodeframe.c')
| -rw-r--r-- | media/libvpx/libvpx/vp9/decoder/vp9_decodeframe.c | 3063 |
1 files changed, 3063 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vp9/decoder/vp9_decodeframe.c b/media/libvpx/libvpx/vp9/decoder/vp9_decodeframe.c new file mode 100644 index 0000000000..c5892156f4 --- /dev/null +++ b/media/libvpx/libvpx/vp9/decoder/vp9_decodeframe.c @@ -0,0 +1,3063 @@ +/* + * 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_dsp_rtcd.h" +#include "./vpx_scale_rtcd.h" + +#include "vpx_dsp/bitreader_buffer.h" +#include "vpx_dsp/bitreader.h" +#include "vpx_dsp/vpx_dsp_common.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 "vpx_util/vpx_thread.h" +#if CONFIG_BITSTREAM_DEBUG || CONFIG_MISMATCH_DEBUG +#include "vpx_util/vpx_debug_util.h" +#endif // CONFIG_BITSTREAM_DEBUG || CONFIG_MISMATCH_DEBUG + +#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_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_job_queue.h" + +#define MAX_VP9_HEADER_SIZE 80 + +typedef int (*predict_recon_func)(TileWorkerData *twd, MODE_INFO *const mi, + int plane, int row, int col, TX_SIZE tx_size); + +typedef void (*intra_recon_func)(TileWorkerData *twd, MODE_INFO *const mi, + int plane, int row, int col, TX_SIZE tx_size); + +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 vpx_read_bit_buffer *rb, int max) { + const int data = vpx_rb_read_literal(rb, get_unsigned_bits(max)); + return data > max ? max : data; +} + +static TX_MODE read_tx_mode(vpx_reader *r) { + TX_MODE tx_mode = vpx_read_literal(r, 2); + if (tx_mode == ALLOW_32X32) tx_mode += vpx_read_bit(r); + return tx_mode; +} + +static void read_tx_mode_probs(struct tx_probs *tx_probs, vpx_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, vpx_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, vpx_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, + vpx_reader *r) { + if (vp9_compound_reference_allowed(cm)) { + return vpx_read_bit(r) + ? (vpx_read_bit(r) ? REFERENCE_MODE_SELECT : COMPOUND_REFERENCE) + : SINGLE_REFERENCE; + } else { + return SINGLE_REFERENCE; + } +} + +static void read_frame_reference_mode_probs(VP9_COMMON *cm, vpx_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(vpx_prob *p, int n, vpx_reader *r) { + int i; + for (i = 0; i < n; ++i) + if (vpx_read(r, MV_UPDATE_PROB)) p[i] = (vpx_read_literal(r, 7) << 1) | 1; +} + +static void read_mv_probs(nmv_context *ctx, int allow_hp, vpx_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_inter(MACROBLOCKD *xd, int plane, + const TX_SIZE tx_size, uint8_t *dst, + int stride, int eob) { + struct macroblockd_plane *const pd = &xd->plane[plane]; + tran_low_t *const dqcoeff = pd->dqcoeff; + assert(eob > 0); +#if CONFIG_VP9_HIGHBITDEPTH + if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) { + uint16_t *const dst16 = CONVERT_TO_SHORTPTR(dst); + if (xd->lossless) { + vp9_highbd_iwht4x4_add(dqcoeff, dst16, stride, eob, xd->bd); + } else { + switch (tx_size) { + case TX_4X4: + vp9_highbd_idct4x4_add(dqcoeff, dst16, stride, eob, xd->bd); + break; + case TX_8X8: + vp9_highbd_idct8x8_add(dqcoeff, dst16, stride, eob, xd->bd); + break; + case TX_16X16: + vp9_highbd_idct16x16_add(dqcoeff, dst16, stride, eob, xd->bd); + break; + case TX_32X32: + vp9_highbd_idct32x32_add(dqcoeff, dst16, stride, eob, xd->bd); + break; + default: assert(0 && "Invalid transform size"); + } + } + } else { + if (xd->lossless) { + vp9_iwht4x4_add(dqcoeff, dst, stride, eob); + } else { + switch (tx_size) { + case TX_4X4: vp9_idct4x4_add(dqcoeff, dst, stride, eob); break; + case TX_8X8: vp9_idct8x8_add(dqcoeff, dst, stride, eob); break; + case TX_16X16: vp9_idct16x16_add(dqcoeff, dst, stride, eob); break; + case TX_32X32: vp9_idct32x32_add(dqcoeff, dst, stride, eob); break; + default: assert(0 && "Invalid transform size"); return; + } + } + } +#else + if (xd->lossless) { + vp9_iwht4x4_add(dqcoeff, dst, stride, eob); + } else { + switch (tx_size) { + case TX_4X4: vp9_idct4x4_add(dqcoeff, dst, stride, eob); break; + case TX_8X8: vp9_idct8x8_add(dqcoeff, dst, stride, eob); break; + case TX_16X16: vp9_idct16x16_add(dqcoeff, dst, stride, eob); break; + case TX_32X32: vp9_idct32x32_add(dqcoeff, dst, stride, eob); break; + default: assert(0 && "Invalid transform size"); return; + } + } +#endif // CONFIG_VP9_HIGHBITDEPTH + + if (eob == 1) { + dqcoeff[0] = 0; + } else { + if (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])); + } +} + +static void inverse_transform_block_intra(MACROBLOCKD *xd, int plane, + const TX_TYPE tx_type, + const TX_SIZE tx_size, uint8_t *dst, + int stride, int eob) { + struct macroblockd_plane *const pd = &xd->plane[plane]; + tran_low_t *const dqcoeff = pd->dqcoeff; + assert(eob > 0); +#if CONFIG_VP9_HIGHBITDEPTH + if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) { + uint16_t *const dst16 = CONVERT_TO_SHORTPTR(dst); + if (xd->lossless) { + vp9_highbd_iwht4x4_add(dqcoeff, dst16, stride, eob, xd->bd); + } else { + switch (tx_size) { + case TX_4X4: + vp9_highbd_iht4x4_add(tx_type, dqcoeff, dst16, stride, eob, xd->bd); + break; + case TX_8X8: + vp9_highbd_iht8x8_add(tx_type, dqcoeff, dst16, stride, eob, xd->bd); + break; + case TX_16X16: + vp9_highbd_iht16x16_add(tx_type, dqcoeff, dst16, stride, eob, xd->bd); + break; + case TX_32X32: + vp9_highbd_idct32x32_add(dqcoeff, dst16, stride, eob, xd->bd); + break; + default: assert(0 && "Invalid transform size"); + } + } + } else { + if (xd->lossless) { + vp9_iwht4x4_add(dqcoeff, dst, stride, eob); + } else { + switch (tx_size) { + case TX_4X4: vp9_iht4x4_add(tx_type, dqcoeff, dst, stride, eob); break; + case TX_8X8: vp9_iht8x8_add(tx_type, dqcoeff, dst, stride, eob); break; + case TX_16X16: + vp9_iht16x16_add(tx_type, dqcoeff, dst, stride, eob); + break; + case TX_32X32: vp9_idct32x32_add(dqcoeff, dst, stride, eob); break; + default: assert(0 && "Invalid transform size"); return; + } + } + } +#else + if (xd->lossless) { + vp9_iwht4x4_add(dqcoeff, dst, stride, eob); + } else { + switch (tx_size) { + case TX_4X4: vp9_iht4x4_add(tx_type, dqcoeff, dst, stride, eob); break; + case TX_8X8: vp9_iht8x8_add(tx_type, dqcoeff, dst, stride, eob); break; + case TX_16X16: + vp9_iht16x16_add(tx_type, dqcoeff, dst, stride, eob); + break; + case TX_32X32: vp9_idct32x32_add(dqcoeff, dst, stride, eob); break; + default: assert(0 && "Invalid transform size"); return; + } + } +#endif // CONFIG_VP9_HIGHBITDEPTH + + if (eob == 1) { + dqcoeff[0] = 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])); + } +} + +static void predict_and_reconstruct_intra_block(TileWorkerData *twd, + MODE_INFO *const mi, int plane, + int row, int col, + TX_SIZE tx_size) { + MACROBLOCKD *const xd = &twd->xd; + struct macroblockd_plane *const pd = &xd->plane[plane]; + PREDICTION_MODE mode = (plane == 0) ? mi->mode : mi->uv_mode; + uint8_t *dst; + dst = &pd->dst.buf[4 * row * pd->dst.stride + 4 * col]; + + if (mi->sb_type < BLOCK_8X8) + if (plane == 0) mode = xd->mi[0]->bmi[(row << 1) + col].as_mode; + + vp9_predict_intra_block(xd, pd->n4_wl, tx_size, mode, dst, pd->dst.stride, + dst, pd->dst.stride, col, row, plane); + + if (!mi->skip) { + const TX_TYPE tx_type = + (plane || xd->lossless) ? DCT_DCT : intra_mode_to_tx_type_lookup[mode]; + const ScanOrder *sc = (plane || xd->lossless) + ? &vp9_default_scan_orders[tx_size] + : &vp9_scan_orders[tx_size][tx_type]; + const int eob = vp9_decode_block_tokens(twd, plane, sc, col, row, tx_size, + mi->segment_id); + if (eob > 0) { + inverse_transform_block_intra(xd, plane, tx_type, tx_size, dst, + pd->dst.stride, eob); + } + } +} + +static void parse_intra_block_row_mt(TileWorkerData *twd, MODE_INFO *const mi, + int plane, int row, int col, + TX_SIZE tx_size) { + MACROBLOCKD *const xd = &twd->xd; + PREDICTION_MODE mode = (plane == 0) ? mi->mode : mi->uv_mode; + + if (mi->sb_type < BLOCK_8X8) + if (plane == 0) mode = xd->mi[0]->bmi[(row << 1) + col].as_mode; + + if (!mi->skip) { + struct macroblockd_plane *const pd = &xd->plane[plane]; + const TX_TYPE tx_type = + (plane || xd->lossless) ? DCT_DCT : intra_mode_to_tx_type_lookup[mode]; + const ScanOrder *sc = (plane || xd->lossless) + ? &vp9_default_scan_orders[tx_size] + : &vp9_scan_orders[tx_size][tx_type]; + *pd->eob = vp9_decode_block_tokens(twd, plane, sc, col, row, tx_size, + mi->segment_id); + /* Keep the alignment to 16 */ + pd->dqcoeff += (16 << (tx_size << 1)); + pd->eob++; + } +} + +static void predict_and_reconstruct_intra_block_row_mt(TileWorkerData *twd, + MODE_INFO *const mi, + int plane, int row, + int col, + TX_SIZE tx_size) { + MACROBLOCKD *const xd = &twd->xd; + struct macroblockd_plane *const pd = &xd->plane[plane]; + PREDICTION_MODE mode = (plane == 0) ? mi->mode : mi->uv_mode; + uint8_t *dst = &pd->dst.buf[4 * row * pd->dst.stride + 4 * col]; + + if (mi->sb_type < BLOCK_8X8) + if (plane == 0) mode = xd->mi[0]->bmi[(row << 1) + col].as_mode; + + vp9_predict_intra_block(xd, pd->n4_wl, tx_size, mode, dst, pd->dst.stride, + dst, pd->dst.stride, col, row, plane); + + if (!mi->skip) { + const TX_TYPE tx_type = + (plane || xd->lossless) ? DCT_DCT : intra_mode_to_tx_type_lookup[mode]; + if (*pd->eob > 0) { + inverse_transform_block_intra(xd, plane, tx_type, tx_size, dst, + pd->dst.stride, *pd->eob); + } + /* Keep the alignment to 16 */ + pd->dqcoeff += (16 << (tx_size << 1)); + pd->eob++; + } +} + +static int reconstruct_inter_block(TileWorkerData *twd, MODE_INFO *const mi, + int plane, int row, int col, TX_SIZE tx_size, + int mi_row, int mi_col) { + MACROBLOCKD *const xd = &twd->xd; + struct macroblockd_plane *const pd = &xd->plane[plane]; + const ScanOrder *sc = &vp9_default_scan_orders[tx_size]; + const int eob = vp9_decode_block_tokens(twd, plane, sc, col, row, tx_size, + mi->segment_id); + uint8_t *dst = &pd->dst.buf[4 * row * pd->dst.stride + 4 * col]; + + if (eob > 0) { + inverse_transform_block_inter(xd, plane, tx_size, dst, pd->dst.stride, eob); + } +#if CONFIG_MISMATCH_DEBUG + { + int pixel_c, pixel_r; + int blk_w = 1 << (tx_size + TX_UNIT_SIZE_LOG2); + int blk_h = 1 << (tx_size + TX_UNIT_SIZE_LOG2); + mi_to_pixel_loc(&pixel_c, &pixel_r, mi_col, mi_row, col, row, + pd->subsampling_x, pd->subsampling_y); + mismatch_check_block_tx(dst, pd->dst.stride, plane, pixel_c, pixel_r, blk_w, + blk_h, xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH); + } +#else + (void)mi_row; + (void)mi_col; +#endif + return eob; +} + +static int parse_inter_block_row_mt(TileWorkerData *twd, MODE_INFO *const mi, + int plane, int row, int col, + TX_SIZE tx_size) { + MACROBLOCKD *const xd = &twd->xd; + struct macroblockd_plane *const pd = &xd->plane[plane]; + const ScanOrder *sc = &vp9_default_scan_orders[tx_size]; + const int eob = vp9_decode_block_tokens(twd, plane, sc, col, row, tx_size, + mi->segment_id); + + *pd->eob = eob; + pd->dqcoeff += (16 << (tx_size << 1)); + pd->eob++; + + return eob; +} + +static int reconstruct_inter_block_row_mt(TileWorkerData *twd, + MODE_INFO *const mi, int plane, + int row, int col, TX_SIZE tx_size) { + MACROBLOCKD *const xd = &twd->xd; + struct macroblockd_plane *const pd = &xd->plane[plane]; + const int eob = *pd->eob; + + (void)mi; + if (eob > 0) { + inverse_transform_block_inter( + xd, plane, tx_size, &pd->dst.buf[4 * row * pd->dst.stride + 4 * col], + pd->dst.stride, eob); + } + pd->dqcoeff += (16 << (tx_size << 1)); + pd->eob++; + + return eob; +} + +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(TileWorkerData *twd, 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) { + uint16_t *mc_buf_high = twd->extend_and_predict_buf; + 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); + highbd_inter_predictor(mc_buf_high + border_offset, b_w, + CONVERT_TO_SHORTPTR(dst), dst_buf_stride, subpel_x, + subpel_y, sf, w, h, ref, kernel, xs, ys, xd->bd); + } 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); + inter_predictor(((uint8_t *)mc_buf_high) + border_offset, b_w, dst, + dst_buf_stride, subpel_x, subpel_y, sf, w, h, ref, kernel, + xs, ys); + } +} +#else +static void extend_and_predict(TileWorkerData *twd, 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) { + uint8_t *mc_buf = (uint8_t *)twd->extend_and_predict_buf; + 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( + TileWorkerData *twd, 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)); +#if 0 // CONFIG_BETTER_HW_COMPATIBILITY + assert(xd->mi[0]->sb_type != BLOCK_4X8 && + xd->mi[0]->sb_type != BLOCK_8X4); + assert(mv_q4.row == mv->row * (1 << (1 - pd->subsampling_y)) && + mv_q4.col == mv->col * (1 << (1 - pd->subsampling_x))); +#endif + // 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) + 1; + + // Get reference block bottom right horizontal coordinate. + int x1 = ((x0_16 + (w - 1) * xs) >> SUBPEL_BITS) + 1; + 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; + } + + // 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(twd, 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; + } + } +#if CONFIG_VP9_HIGHBITDEPTH + if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) { + highbd_inter_predictor(CONVERT_TO_SHORTPTR(buf_ptr), buf_stride, + CONVERT_TO_SHORTPTR(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 +} + +static void dec_build_inter_predictors_sb(TileWorkerData *twd, + VP9Decoder *const pbi, + MACROBLOCKD *xd, int mi_row, + int mi_col) { + 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_filter_kernels[mi->interp_filter]; + const BLOCK_SIZE sb_type = mi->sb_type; + const int is_compound = has_second_ref(mi); + int ref; + int is_scaled; + + for (ref = 0; ref < 1 + is_compound; ++ref) { + const MV_REFERENCE_FRAME frame = mi->ref_frame[ref]; + RefBuffer *ref_buf = &pbi->common.frame_refs[frame - LAST_FRAME]; + const struct scale_factors *const sf = &ref_buf->sf; + const int idx = ref_buf->idx; + BufferPool *const pool = pbi->common.buffer_pool; + RefCntBuffer *const ref_frame_buf = &pool->frame_bufs[idx]; + + if (!vp9_is_valid_scale(sf)) + vpx_internal_error(xd->error_info, VPX_CODEC_UNSUP_BITSTREAM, + "Reference frame has invalid dimensions"); + + is_scaled = vp9_is_scaled(sf); + vp9_setup_pre_planes(xd, ref, ref_buf->buf, mi_row, mi_col, + is_scaled ? sf : NULL); + xd->block_refs[ref] = ref_buf; + + if (sb_type < BLOCK_8X8) { + for (plane = 0; plane < MAX_MB_PLANE; ++plane) { + struct macroblockd_plane *const pd = &xd->plane[plane]; + struct buf_2d *const dst_buf = &pd->dst; + const int num_4x4_w = pd->n4_w; + const int num_4x4_h = pd->n4_h; + const int n4w_x4 = 4 * num_4x4_w; + const int n4h_x4 = 4 * num_4x4_h; + struct buf_2d *const pre_buf = &pd->pre[ref]; + int i = 0, x, y; + 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(twd, xd, plane, n4w_x4, n4h_x4, 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->mv[ref].as_mv; + for (plane = 0; plane < MAX_MB_PLANE; ++plane) { + struct macroblockd_plane *const pd = &xd->plane[plane]; + struct buf_2d *const dst_buf = &pd->dst; + const int num_4x4_w = pd->n4_w; + const int num_4x4_h = pd->n4_h; + const int n4w_x4 = 4 * num_4x4_w; + const int n4h_x4 = 4 * num_4x4_h; + struct buf_2d *const pre_buf = &pd->pre[ref]; + dec_build_inter_predictors(twd, xd, plane, n4w_x4, n4h_x4, 0, 0, n4w_x4, + n4h_x4, mi_x, mi_y, kernel, sf, pre_buf, + dst_buf, &mv, ref_frame_buf, is_scaled, ref); + } + } + } +} + +static INLINE void dec_reset_skip_context(MACROBLOCKD *xd) { + int i; + for (i = 0; i < MAX_MB_PLANE; i++) { + struct macroblockd_plane *const pd = &xd->plane[i]; + memset(pd->above_context, 0, sizeof(ENTROPY_CONTEXT) * pd->n4_w); + memset(pd->left_context, 0, sizeof(ENTROPY_CONTEXT) * pd->n4_h); + } +} + +static void set_plane_n4(MACROBLOCKD *const xd, int bw, int bh, int bwl, + int bhl) { + int i; + for (i = 0; i < MAX_MB_PLANE; i++) { + xd->plane[i].n4_w = (bw << 1) >> xd->plane[i].subsampling_x; + xd->plane[i].n4_h = (bh << 1) >> xd->plane[i].subsampling_y; + xd->plane[i].n4_wl = bwl - xd->plane[i].subsampling_x; + xd->plane[i].n4_hl = bhl - xd->plane[i].subsampling_y; + } +} + +static MODE_INFO *set_offsets_recon(VP9_COMMON *const cm, MACROBLOCKD *const xd, + int mi_row, int mi_col, int bw, int bh, + int bwl, int bhl) { + const int offset = mi_row * cm->mi_stride + mi_col; + const TileInfo *const tile = &xd->tile; + xd->mi = cm->mi_grid_visible + offset; + + set_plane_n4(xd, bw, bh, bwl, bhl); + + 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]; +} + +static MODE_INFO *set_offsets(VP9_COMMON *const cm, MACROBLOCKD *const xd, + BLOCK_SIZE bsize, int mi_row, int mi_col, int bw, + int bh, int x_mis, int y_mis, int bwl, int bhl) { + const int offset = mi_row * cm->mi_stride + mi_col; + int x, y; + const TileInfo *const tile = &xd->tile; + + xd->mi = cm->mi_grid_visible + offset; + xd->mi[0] = &cm->mi[offset]; + // TODO(slavarnway): Generate sb_type based on bwl and bhl, instead of + // passing bsize from decode_partition(). + xd->mi[0]->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_plane_n4(xd, bw, bh, bwl, bhl); + + 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]; +} + +static INLINE int predict_recon_inter(MACROBLOCKD *xd, MODE_INFO *mi, + TileWorkerData *twd, + predict_recon_func func) { + int eobtotal = 0; + int plane; + for (plane = 0; plane < MAX_MB_PLANE; ++plane) { + const struct macroblockd_plane *const pd = &xd->plane[plane]; + const TX_SIZE tx_size = plane ? get_uv_tx_size(mi, pd) : mi->tx_size; + const int num_4x4_w = pd->n4_w; + const int num_4x4_h = pd->n4_h; + const int step = (1 << tx_size); + int row, col; + const int max_blocks_wide = + num_4x4_w + (xd->mb_to_right_edge >= 0 + ? 0 + : xd->mb_to_right_edge >> (5 + pd->subsampling_x)); + const int max_blocks_high = + num_4x4_h + (xd->mb_to_bottom_edge >= 0 + ? 0 + : xd->mb_to_bottom_edge >> (5 + pd->subsampling_y)); + + xd->max_blocks_wide = xd->mb_to_right_edge >= 0 ? 0 : max_blocks_wide; + xd->max_blocks_high = xd->mb_to_bottom_edge >= 0 ? 0 : max_blocks_high; + + for (row = 0; row < max_blocks_high; row += step) + for (col = 0; col < max_blocks_wide; col += step) + eobtotal += func(twd, mi, plane, row, col, tx_size); + } + return eobtotal; +} + +static INLINE void predict_recon_intra(MACROBLOCKD *xd, MODE_INFO *mi, + TileWorkerData *twd, + intra_recon_func func) { + int plane; + for (plane = 0; plane < MAX_MB_PLANE; ++plane) { + const struct macroblockd_plane *const pd = &xd->plane[plane]; + const TX_SIZE tx_size = plane ? get_uv_tx_size(mi, pd) : mi->tx_size; + const int num_4x4_w = pd->n4_w; + const int num_4x4_h = pd->n4_h; + const int step = (1 << tx_size); + int row, col; + const int max_blocks_wide = + num_4x4_w + (xd->mb_to_right_edge >= 0 + ? 0 + : xd->mb_to_right_edge >> (5 + pd->subsampling_x)); + const int max_blocks_high = + num_4x4_h + (xd->mb_to_bottom_edge >= 0 + ? 0 + : xd->mb_to_bottom_edge >> (5 + pd->subsampling_y)); + + xd->max_blocks_wide = xd->mb_to_right_edge >= 0 ? 0 : max_blocks_wide; + xd->max_blocks_high = xd->mb_to_bottom_edge >= 0 ? 0 : max_blocks_high; + + for (row = 0; row < max_blocks_high; row += step) + for (col = 0; col < max_blocks_wide; col += step) + func(twd, mi, plane, row, col, tx_size); + } +} + +static void decode_block(TileWorkerData *twd, VP9Decoder *const pbi, int mi_row, + int mi_col, BLOCK_SIZE bsize, int bwl, int bhl) { + VP9_COMMON *const cm = &pbi->common; + const int less8x8 = bsize < BLOCK_8X8; + const int bw = 1 << (bwl - 1); + const int bh = 1 << (bhl - 1); + const int x_mis = VPXMIN(bw, cm->mi_cols - mi_col); + const int y_mis = VPXMIN(bh, cm->mi_rows - mi_row); + vpx_reader *r = &twd->bit_reader; + MACROBLOCKD *const xd = &twd->xd; + + MODE_INFO *mi = set_offsets(cm, xd, bsize, mi_row, mi_col, bw, bh, x_mis, + y_mis, bwl, bhl); + + 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(twd, pbi, mi_row, mi_col, x_mis, y_mis); + + if (mi->skip) { + dec_reset_skip_context(xd); + } + + if (!is_inter_block(mi)) { + int plane; + for (plane = 0; plane < MAX_MB_PLANE; ++plane) { + const struct macroblockd_plane *const pd = &xd->plane[plane]; + const TX_SIZE tx_size = plane ? get_uv_tx_size(mi, pd) : mi->tx_size; + const int num_4x4_w = pd->n4_w; + const int num_4x4_h = pd->n4_h; + const int step = (1 << tx_size); + int row, col; + const int max_blocks_wide = + num_4x4_w + (xd->mb_to_right_edge >= 0 + ? 0 + : xd->mb_to_right_edge >> (5 + pd->subsampling_x)); + const int max_blocks_high = + num_4x4_h + (xd->mb_to_bottom_edge >= 0 + ? 0 + : xd->mb_to_bottom_edge >> (5 + pd->subsampling_y)); + + xd->max_blocks_wide = xd->mb_to_right_edge >= 0 ? 0 : max_blocks_wide; + xd->max_blocks_high = xd->mb_to_bottom_edge >= 0 ? 0 : max_blocks_high; + + for (row = 0; row < max_blocks_high; row += step) + for (col = 0; col < max_blocks_wide; col += step) + predict_and_reconstruct_intra_block(twd, mi, plane, row, col, + tx_size); + } + } else { + // Prediction + dec_build_inter_predictors_sb(twd, pbi, xd, mi_row, mi_col); +#if CONFIG_MISMATCH_DEBUG + { + int plane; + for (plane = 0; plane < MAX_MB_PLANE; ++plane) { + const struct macroblockd_plane *pd = &xd->plane[plane]; + int pixel_c, pixel_r; + const BLOCK_SIZE plane_bsize = + get_plane_block_size(VPXMAX(bsize, BLOCK_8X8), &xd->plane[plane]); + const int bw = get_block_width(plane_bsize); + const int bh = get_block_height(plane_bsize); + mi_to_pixel_loc(&pixel_c, &pixel_r, mi_col, mi_row, 0, 0, + pd->subsampling_x, pd->subsampling_y); + mismatch_check_block_pre(pd->dst.buf, pd->dst.stride, plane, pixel_c, + pixel_r, bw, bh, + xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH); + } + } +#endif + + // Reconstruction + if (!mi->skip) { + int eobtotal = 0; + int plane; + + for (plane = 0; plane < MAX_MB_PLANE; ++plane) { + const struct macroblockd_plane *const pd = &xd->plane[plane]; + const TX_SIZE tx_size = plane ? get_uv_tx_size(mi, pd) : mi->tx_size; + const int num_4x4_w = pd->n4_w; + const int num_4x4_h = pd->n4_h; + const int step = (1 << tx_size); + int row, col; + const int max_blocks_wide = + num_4x4_w + (xd->mb_to_right_edge >= 0 + ? 0 + : xd->mb_to_right_edge >> (5 + pd->subsampling_x)); + const int max_blocks_high = + num_4x4_h + + (xd->mb_to_bottom_edge >= 0 + ? 0 + : xd->mb_to_bottom_edge >> (5 + pd->subsampling_y)); + + xd->max_blocks_wide = xd->mb_to_right_edge >= 0 ? 0 : max_blocks_wide; + xd->max_blocks_high = xd->mb_to_bottom_edge >= 0 ? 0 : max_blocks_high; + + for (row = 0; row < max_blocks_high; row += step) + for (col = 0; col < max_blocks_wide; col += step) + eobtotal += reconstruct_inter_block(twd, mi, plane, row, col, + tx_size, mi_row, mi_col); + } + + if (!less8x8 && eobtotal == 0) mi->skip = 1; // skip loopfilter + } + } + + xd->corrupted |= vpx_reader_has_error(r); + + if (cm->lf.filter_level) { + vp9_build_mask(cm, mi, mi_row, mi_col, bw, bh); + } +} + +static void recon_block(TileWorkerData *twd, VP9Decoder *const pbi, int mi_row, + int mi_col, BLOCK_SIZE bsize, int bwl, int bhl) { + VP9_COMMON *const cm = &pbi->common; + const int bw = 1 << (bwl - 1); + const int bh = 1 << (bhl - 1); + MACROBLOCKD *const xd = &twd->xd; + + MODE_INFO *mi = set_offsets_recon(cm, xd, mi_row, mi_col, bw, bh, bwl, bhl); + + 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."); + } + + if (!is_inter_block(mi)) { + predict_recon_intra(xd, mi, twd, + predict_and_reconstruct_intra_block_row_mt); + } else { + // Prediction + dec_build_inter_predictors_sb(twd, pbi, xd, mi_row, mi_col); + + // Reconstruction + if (!mi->skip) { + predict_recon_inter(xd, mi, twd, reconstruct_inter_block_row_mt); + } + } + + vp9_build_mask(cm, mi, mi_row, mi_col, bw, bh); +} + +static void parse_block(TileWorkerData *twd, VP9Decoder *const pbi, int mi_row, + int mi_col, BLOCK_SIZE bsize, int bwl, int bhl) { + VP9_COMMON *const cm = &pbi->common; + const int bw = 1 << (bwl - 1); + const int bh = 1 << (bhl - 1); + const int x_mis = VPXMIN(bw, cm->mi_cols - mi_col); + const int y_mis = VPXMIN(bh, cm->mi_rows - mi_row); + vpx_reader *r = &twd->bit_reader; + MACROBLOCKD *const xd = &twd->xd; + + MODE_INFO *mi = set_offsets(cm, xd, bsize, mi_row, mi_col, bw, bh, x_mis, + y_mis, bwl, bhl); + + 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(twd, pbi, mi_row, mi_col, x_mis, y_mis); + + if (mi->skip) { + dec_reset_skip_context(xd); + } + + if (!is_inter_block(mi)) { + predict_recon_intra(xd, mi, twd, parse_intra_block_row_mt); + } else { + if (!mi->skip) { + tran_low_t *dqcoeff[MAX_MB_PLANE]; + int *eob[MAX_MB_PLANE]; + int plane; + int eobtotal; + // Based on eobtotal and bsize, this may be mi->skip may be set to true + // In that case dqcoeff and eob need to be backed up and restored as + // recon_block will not increment these pointers for skip cases + for (plane = 0; plane < MAX_MB_PLANE; ++plane) { + const struct macroblockd_plane *const pd = &xd->plane[plane]; + dqcoeff[plane] = pd->dqcoeff; + eob[plane] = pd->eob; + } + eobtotal = predict_recon_inter(xd, mi, twd, parse_inter_block_row_mt); + + if (bsize >= BLOCK_8X8 && eobtotal == 0) { + mi->skip = 1; // skip loopfilter + for (plane = 0; plane < MAX_MB_PLANE; ++plane) { + struct macroblockd_plane *pd = &xd->plane[plane]; + pd->dqcoeff = dqcoeff[plane]; + pd->eob = eob[plane]; + } + } + } + } + + xd->corrupted |= vpx_reader_has_error(r); +} + +static INLINE int dec_partition_plane_context(TileWorkerData *twd, int mi_row, + int mi_col, int bsl) { + const PARTITION_CONTEXT *above_ctx = twd->xd.above_seg_context + mi_col; + const PARTITION_CONTEXT *left_ctx = + twd->xd.left_seg_context + (mi_row & MI_MASK); + int above = (*above_ctx >> bsl) & 1, left = (*left_ctx >> bsl) & 1; + + // assert(bsl >= 0); + + return (left * 2 + above) + bsl * PARTITION_PLOFFSET; +} + +static INLINE void dec_update_partition_context(TileWorkerData *twd, int mi_row, + int mi_col, BLOCK_SIZE subsize, + int bw) { + PARTITION_CONTEXT *const above_ctx = twd->xd.above_seg_context + mi_col; + PARTITION_CONTEXT *const left_ctx = + twd->xd.left_seg_context + (mi_row & MI_MASK); + + // update the partition context at the end notes. set partition bits + // of block sizes larger than the current one to be one, and partition + // bits of smaller block sizes to be zero. + memset(above_ctx, partition_context_lookup[subsize].above, bw); + memset(left_ctx, partition_context_lookup[subsize].left, bw); +} + +static PARTITION_TYPE read_partition(TileWorkerData *twd, int mi_row, + int mi_col, int has_rows, int has_cols, + int bsl) { + const int ctx = dec_partition_plane_context(twd, mi_row, mi_col, bsl); + const vpx_prob *const probs = twd->xd.partition_probs[ctx]; + FRAME_COUNTS *counts = twd->xd.counts; + PARTITION_TYPE p; + vpx_reader *r = &twd->bit_reader; + + if (has_rows && has_cols) + p = (PARTITION_TYPE)vpx_read_tree(r, vp9_partition_tree, probs); + else if (!has_rows && has_cols) + p = vpx_read(r, probs[1]) ? PARTITION_SPLIT : PARTITION_HORZ; + else if (has_rows && !has_cols) + p = vpx_read(r, probs[2]) ? PARTITION_SPLIT : PARTITION_VERT; + else + p = PARTITION_SPLIT; + + if (counts) ++counts->partition[ctx][p]; + + return p; +} + +// TODO(slavarnway): eliminate bsize and subsize in future commits +static void decode_partition(TileWorkerData *twd, VP9Decoder *const pbi, + int mi_row, int mi_col, BLOCK_SIZE bsize, + int n4x4_l2) { + VP9_COMMON *const cm = &pbi->common; + const int n8x8_l2 = n4x4_l2 - 1; + const int num_8x8_wh = 1 << n8x8_l2; + const int hbs = num_8x8_wh >> 1; + PARTITION_TYPE partition; + BLOCK_SIZE subsize; + const int has_rows = (mi_row + hbs) < cm->mi_rows; + const int has_cols = (mi_col + hbs) < cm->mi_cols; + MACROBLOCKD *const xd = &twd->xd; + + if (mi_row >= cm->mi_rows || mi_col >= cm->mi_cols) return; + + partition = read_partition(twd, mi_row, mi_col, has_rows, has_cols, n8x8_l2); + subsize = subsize_lookup[partition][bsize]; // get_subsize(bsize, partition); + if (!hbs) { + // calculate bmode block dimensions (log 2) + xd->bmode_blocks_wl = 1 >> !!(partition & PARTITION_VERT); + xd->bmode_blocks_hl = 1 >> !!(partition & PARTITION_HORZ); + decode_block(twd, pbi, mi_row, mi_col, subsize, 1, 1); + } else { + switch (partition) { + case PARTITION_NONE: + decode_block(twd, pbi, mi_row, mi_col, subsize, n4x4_l2, n4x4_l2); + break; + case PARTITION_HORZ: + decode_block(twd, pbi, mi_row, mi_col, subsize, n4x4_l2, n8x8_l2); + if (has_rows) + decode_block(twd, pbi, mi_row + hbs, mi_col, subsize, n4x4_l2, + n8x8_l2); + break; + case PARTITION_VERT: + decode_block(twd, pbi, mi_row, mi_col, subsize, n8x8_l2, n4x4_l2); + if (has_cols) + decode_block(twd, pbi, mi_row, mi_col + hbs, subsize, n8x8_l2, + n4x4_l2); + break; + case PARTITION_SPLIT: + decode_partition(twd, pbi, mi_row, mi_col, subsize, n8x8_l2); + decode_partition(twd, pbi, mi_row, mi_col + hbs, subsize, n8x8_l2); + decode_partition(twd, pbi, mi_row + hbs, mi_col, subsize, n8x8_l2); + decode_partition(twd, pbi, mi_row + hbs, mi_col + hbs, subsize, + n8x8_l2); + break; + default: assert(0 && "Invalid partition type"); + } + } + + // update partition context + if (bsize >= BLOCK_8X8 && + (bsize == BLOCK_8X8 || partition != PARTITION_SPLIT)) + dec_update_partition_context(twd, mi_row, mi_col, subsize, num_8x8_wh); +} + +static void process_partition(TileWorkerData *twd, VP9Decoder *const pbi, + int mi_row, int mi_col, BLOCK_SIZE bsize, + int n4x4_l2, int parse_recon_flag, + process_block_fn_t process_block) { + VP9_COMMON *const cm = &pbi->common; + const int n8x8_l2 = n4x4_l2 - 1; + const int num_8x8_wh = 1 << n8x8_l2; + const int hbs = num_8x8_wh >> 1; + PARTITION_TYPE partition; + BLOCK_SIZE subsize; + const int has_rows = (mi_row + hbs) < cm->mi_rows; + const int has_cols = (mi_col + hbs) < cm->mi_cols; + MACROBLOCKD *const xd = &twd->xd; + + if (mi_row >= cm->mi_rows || mi_col >= cm->mi_cols) return; + + if (parse_recon_flag & PARSE) { + *xd->partition = + read_partition(twd, mi_row, mi_col, has_rows, has_cols, n8x8_l2); + } + + partition = *xd->partition; + xd->partition++; + + subsize = get_subsize(bsize, partition); + if (!hbs) { + // calculate bmode block dimensions (log 2) + xd->bmode_blocks_wl = 1 >> !!(partition & PARTITION_VERT); + xd->bmode_blocks_hl = 1 >> !!(partition & PARTITION_HORZ); + process_block(twd, pbi, mi_row, mi_col, subsize, 1, 1); + } else { + switch (partition) { + case PARTITION_NONE: + process_block(twd, pbi, mi_row, mi_col, subsize, n4x4_l2, n4x4_l2); + break; + case PARTITION_HORZ: + process_block(twd, pbi, mi_row, mi_col, subsize, n4x4_l2, n8x8_l2); + if (has_rows) + process_block(twd, pbi, mi_row + hbs, mi_col, subsize, n4x4_l2, + n8x8_l2); + break; + case PARTITION_VERT: + process_block(twd, pbi, mi_row, mi_col, subsize, n8x8_l2, n4x4_l2); + if (has_cols) + process_block(twd, pbi, mi_row, mi_col + hbs, subsize, n8x8_l2, + n4x4_l2); + break; + case PARTITION_SPLIT: + process_partition(twd, pbi, mi_row, mi_col, subsize, n8x8_l2, + parse_recon_flag, process_block); + process_partition(twd, pbi, mi_row, mi_col + hbs, subsize, n8x8_l2, + parse_recon_flag, process_block); + process_partition(twd, pbi, mi_row + hbs, mi_col, subsize, n8x8_l2, + parse_recon_flag, process_block); + process_partition(twd, pbi, mi_row + hbs, mi_col + hbs, subsize, + n8x8_l2, parse_recon_flag, process_block); + break; + default: assert(0 && "Invalid partition type"); + } + } + + if (parse_recon_flag & PARSE) { + // update partition context + if ((bsize == BLOCK_8X8 || partition != PARTITION_SPLIT) && + bsize >= BLOCK_8X8) + dec_update_partition_context(twd, mi_row, mi_col, subsize, num_8x8_wh); + } +} + +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, + vpx_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 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 (vpx_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, + vpx_reader *r) { + int i, j, k, l, m; + + if (vpx_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, vpx_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 vpx_read_bit_buffer *rb) { + int i, j; + + seg->update_map = 0; + seg->update_data = 0; + + seg->enabled = vpx_rb_read_bit(rb); + if (!seg->enabled) return; + + // Segmentation map update + seg->update_map = vpx_rb_read_bit(rb); + if (seg->update_map) { + for (i = 0; i < SEG_TREE_PROBS; i++) + seg->tree_probs[i] = + vpx_rb_read_bit(rb) ? vpx_rb_read_literal(rb, 8) : MAX_PROB; + + seg->temporal_update = vpx_rb_read_bit(rb); + if (seg->temporal_update) { + for (i = 0; i < PREDICTION_PROBS; i++) + seg->pred_probs[i] = + vpx_rb_read_bit(rb) ? vpx_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 = vpx_rb_read_bit(rb); + if (seg->update_data) { + seg->abs_delta = vpx_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 = vpx_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 = vpx_rb_read_bit(rb) ? -data : data; + } + vp9_set_segdata(seg, i, j, data); + } + } + } +} + +static void setup_loopfilter(struct loopfilter *lf, + struct vpx_read_bit_buffer *rb) { + lf->filter_level = vpx_rb_read_literal(rb, 6); + lf->sharpness_level = vpx_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 = vpx_rb_read_bit(rb); + if (lf->mode_ref_delta_enabled) { + lf->mode_ref_delta_update = vpx_rb_read_bit(rb); + if (lf->mode_ref_delta_update) { + int i; + + for (i = 0; i < MAX_REF_LF_DELTAS; i++) + if (vpx_rb_read_bit(rb)) + lf->ref_deltas[i] = vpx_rb_read_signed_literal(rb, 6); + + for (i = 0; i < MAX_MODE_LF_DELTAS; i++) + if (vpx_rb_read_bit(rb)) + lf->mode_deltas[i] = vpx_rb_read_signed_literal(rb, 6); + } + } +} + +static INLINE int read_delta_q(struct vpx_read_bit_buffer *rb) { + return vpx_rb_read_bit(rb) ? vpx_rb_read_signed_literal(rb, 4) : 0; +} + +static void setup_quantization(VP9_COMMON *const cm, MACROBLOCKD *const xd, + struct vpx_read_bit_buffer *rb) { + cm->base_qindex = vpx_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 vpx_read_bit_buffer *rb) { + const INTERP_FILTER literal_to_filter[] = { EIGHTTAP_SMOOTH, EIGHTTAP, + EIGHTTAP_SHARP, BILINEAR }; + return vpx_rb_read_bit(rb) ? SWITCHABLE + : literal_to_filter[vpx_rb_read_literal(rb, 2)]; +} + +static void setup_render_size(VP9_COMMON *cm, struct vpx_read_bit_buffer *rb) { + cm->render_width = cm->width; + cm->render_height = cm->height; + if (vpx_rb_read_bit(rb)) + vp9_read_frame_size(rb, &cm->render_width, &cm->render_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; + CHECK_MEM_ERROR(&cm->error, 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)) { + // The cm->mi_* values have been cleared and any existing context + // buffers have been freed. Clear cm->width and cm->height to be + // consistent and to force a realloc next time. + cm->width = 0; + cm->height = 0; + 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 vpx_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_render_size(cm, rb); + + if (vpx_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)) { + vpx_internal_error(&cm->error, VPX_CODEC_MEM_ERROR, + "Failed to allocate frame buffer"); + } + + pool->frame_bufs[cm->new_fb_idx].released = 0; + 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; + pool->frame_bufs[cm->new_fb_idx].buf.color_range = cm->color_range; + pool->frame_bufs[cm->new_fb_idx].buf.render_width = cm->render_width; + pool->frame_bufs[cm->new_fb_idx].buf.render_height = cm->render_height; +} + +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 vpx_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 (vpx_rb_read_bit(rb)) { + if (cm->frame_refs[i].idx != INVALID_IDX) { + YV12_BUFFER_CONFIG *const buf = cm->frame_refs[i].buf; + width = buf->y_crop_width; + height = buf->y_crop_height; + found = 1; + break; + } else { + vpx_internal_error(&cm->error, VPX_CODEC_CORRUPT_FRAME, + "Failed to decode frame size"); + } + } + } + + 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 |= + (ref_frame->idx != INVALID_IDX && + 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 (ref_frame->idx == INVALID_IDX || + !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_render_size(cm, rb); + + if (vpx_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)) { + vpx_internal_error(&cm->error, VPX_CODEC_MEM_ERROR, + "Failed to allocate frame buffer"); + } + + pool->frame_bufs[cm->new_fb_idx].released = 0; + 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; + pool->frame_bufs[cm->new_fb_idx].buf.color_range = cm->color_range; + pool->frame_bufs[cm->new_fb_idx].buf.render_width = cm->render_width; + pool->frame_bufs[cm->new_fb_idx].buf.render_height = cm->render_height; +} + +static void setup_tile_info(VP9_COMMON *cm, struct vpx_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-- && vpx_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 = vpx_rb_read_bit(rb); + if (cm->log2_tile_rows) cm->log2_tile_rows += vpx_rb_read_bit(rb); +} + +// 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 void map_write(RowMTWorkerData *const row_mt_worker_data, int map_idx, + int sync_idx) { +#if CONFIG_MULTITHREAD + pthread_mutex_lock(&row_mt_worker_data->recon_sync_mutex[sync_idx]); + row_mt_worker_data->recon_map[map_idx] = 1; + pthread_cond_signal(&row_mt_worker_data->recon_sync_cond[sync_idx]); + pthread_mutex_unlock(&row_mt_worker_data->recon_sync_mutex[sync_idx]); +#else + (void)row_mt_worker_data; + (void)map_idx; + (void)sync_idx; +#endif // CONFIG_MULTITHREAD +} + +static void map_read(RowMTWorkerData *const row_mt_worker_data, int map_idx, + int sync_idx) { +#if CONFIG_MULTITHREAD + volatile int8_t *map = row_mt_worker_data->recon_map + map_idx; + pthread_mutex_t *const mutex = + &row_mt_worker_data->recon_sync_mutex[sync_idx]; + pthread_mutex_lock(mutex); + while (!(*map)) { + pthread_cond_wait(&row_mt_worker_data->recon_sync_cond[sync_idx], mutex); + } + pthread_mutex_unlock(mutex); +#else + (void)row_mt_worker_data; + (void)map_idx; + (void)sync_idx; +#endif // CONFIG_MULTITHREAD +} + +static int lpf_map_write_check(VP9LfSync *lf_sync, int row, int num_tile_cols) { + int return_val = 0; +#if CONFIG_MULTITHREAD + int corrupted; + pthread_mutex_lock(lf_sync->lf_mutex); + corrupted = lf_sync->corrupted; + pthread_mutex_unlock(lf_sync->lf_mutex); + if (!corrupted) { + pthread_mutex_lock(&lf_sync->recon_done_mutex[row]); + lf_sync->num_tiles_done[row] += 1; + if (num_tile_cols == lf_sync->num_tiles_done[row]) return_val = 1; + pthread_mutex_unlock(&lf_sync->recon_done_mutex[row]); + } +#else + (void)lf_sync; + (void)row; + (void)num_tile_cols; +#endif + return return_val; +} + +static void vp9_tile_done(VP9Decoder *pbi) { +#if CONFIG_MULTITHREAD + int terminate; + RowMTWorkerData *const row_mt_worker_data = pbi->row_mt_worker_data; + const int all_parse_done = 1 << pbi->common.log2_tile_cols; + pthread_mutex_lock(&row_mt_worker_data->recon_done_mutex); + row_mt_worker_data->num_tiles_done++; + terminate = all_parse_done == row_mt_worker_data->num_tiles_done; + pthread_mutex_unlock(&row_mt_worker_data->recon_done_mutex); + if (terminate) { + vp9_jobq_terminate(&row_mt_worker_data->jobq); + } +#else + (void)pbi; +#endif +} + +static void vp9_jobq_alloc(VP9Decoder *pbi) { + VP9_COMMON *const cm = &pbi->common; + RowMTWorkerData *const row_mt_worker_data = pbi->row_mt_worker_data; + const int aligned_rows = mi_cols_aligned_to_sb(cm->mi_rows); + const int sb_rows = aligned_rows >> MI_BLOCK_SIZE_LOG2; + const int tile_cols = 1 << cm->log2_tile_cols; + const size_t jobq_size = (tile_cols * sb_rows * 2 + sb_rows) * sizeof(Job); + + if (jobq_size > row_mt_worker_data->jobq_size) { + vpx_free(row_mt_worker_data->jobq_buf); + CHECK_MEM_ERROR(&cm->error, row_mt_worker_data->jobq_buf, + vpx_calloc(1, jobq_size)); + vp9_jobq_init(&row_mt_worker_data->jobq, row_mt_worker_data->jobq_buf, + jobq_size); + row_mt_worker_data->jobq_size = jobq_size; + } +} + +static void recon_tile_row(TileWorkerData *tile_data, VP9Decoder *pbi, + int mi_row, int is_last_row, VP9LfSync *lf_sync, + int cur_tile_col) { + VP9_COMMON *const cm = &pbi->common; + RowMTWorkerData *const row_mt_worker_data = pbi->row_mt_worker_data; + const int tile_cols = 1 << cm->log2_tile_cols; + const int aligned_cols = mi_cols_aligned_to_sb(cm->mi_cols); + const int sb_cols = aligned_cols >> MI_BLOCK_SIZE_LOG2; + const int cur_sb_row = mi_row >> MI_BLOCK_SIZE_LOG2; + int mi_col_start = tile_data->xd.tile.mi_col_start; + int mi_col_end = tile_data->xd.tile.mi_col_end; + int mi_col; + + vp9_zero(tile_data->xd.left_context); + vp9_zero(tile_data->xd.left_seg_context); + for (mi_col = mi_col_start; mi_col < mi_col_end; mi_col += MI_BLOCK_SIZE) { + const int c = mi_col >> MI_BLOCK_SIZE_LOG2; + int plane; + const int sb_num = (cur_sb_row * (aligned_cols >> MI_BLOCK_SIZE_LOG2) + c); + + // Top Dependency + if (cur_sb_row) { + map_read(row_mt_worker_data, ((cur_sb_row - 1) * sb_cols) + c, + ((cur_sb_row - 1) * tile_cols) + cur_tile_col); + } + + for (plane = 0; plane < MAX_MB_PLANE; ++plane) { + tile_data->xd.plane[plane].eob = + row_mt_worker_data->eob[plane] + (sb_num << EOBS_PER_SB_LOG2); + tile_data->xd.plane[plane].dqcoeff = + row_mt_worker_data->dqcoeff[plane] + (sb_num << DQCOEFFS_PER_SB_LOG2); + } + tile_data->xd.partition = + row_mt_worker_data->partition + (sb_num * PARTITIONS_PER_SB); + process_partition(tile_data, pbi, mi_row, mi_col, BLOCK_64X64, 4, RECON, + recon_block); + if (cm->lf.filter_level && !cm->skip_loop_filter) { + // Queue LPF_JOB + int is_lpf_job_ready = 0; + + if (mi_col + MI_BLOCK_SIZE >= mi_col_end) { + // Checks if this row has been decoded in all tiles + is_lpf_job_ready = lpf_map_write_check(lf_sync, cur_sb_row, tile_cols); + + if (is_lpf_job_ready) { + Job lpf_job; + lpf_job.job_type = LPF_JOB; + if (cur_sb_row > 0) { + lpf_job.row_num = mi_row - MI_BLOCK_SIZE; + vp9_jobq_queue(&row_mt_worker_data->jobq, &lpf_job, + sizeof(lpf_job)); + } + if (is_last_row) { + lpf_job.row_num = mi_row; + vp9_jobq_queue(&row_mt_worker_data->jobq, &lpf_job, + sizeof(lpf_job)); + } + } + } + } + map_write(row_mt_worker_data, (cur_sb_row * sb_cols) + c, + (cur_sb_row * tile_cols) + cur_tile_col); + } +} + +static void parse_tile_row(TileWorkerData *tile_data, VP9Decoder *pbi, + int mi_row, int cur_tile_col, uint8_t **data_end) { + int mi_col; + VP9_COMMON *const cm = &pbi->common; + RowMTWorkerData *const row_mt_worker_data = pbi->row_mt_worker_data; + TileInfo *tile = &tile_data->xd.tile; + TileBuffer *const buf = &pbi->tile_buffers[cur_tile_col]; + const int aligned_cols = mi_cols_aligned_to_sb(cm->mi_cols); + + vp9_zero(tile_data->dqcoeff); + vp9_tile_init(tile, cm, 0, cur_tile_col); + + /* Update reader only at the beginning of each row in a tile */ + if (mi_row == 0) { + setup_token_decoder(buf->data, *data_end, buf->size, &tile_data->error_info, + &tile_data->bit_reader, pbi->decrypt_cb, + pbi->decrypt_state); + } + vp9_init_macroblockd(cm, &tile_data->xd, tile_data->dqcoeff); + tile_data->xd.error_info = &tile_data->error_info; + + 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) { + const int r = mi_row >> MI_BLOCK_SIZE_LOG2; + const int c = mi_col >> MI_BLOCK_SIZE_LOG2; + int plane; + const int sb_num = (r * (aligned_cols >> MI_BLOCK_SIZE_LOG2) + c); + for (plane = 0; plane < MAX_MB_PLANE; ++plane) { + tile_data->xd.plane[plane].eob = + row_mt_worker_data->eob[plane] + (sb_num << EOBS_PER_SB_LOG2); + tile_data->xd.plane[plane].dqcoeff = + row_mt_worker_data->dqcoeff[plane] + (sb_num << DQCOEFFS_PER_SB_LOG2); + } + tile_data->xd.partition = + row_mt_worker_data->partition + sb_num * PARTITIONS_PER_SB; + process_partition(tile_data, pbi, mi_row, mi_col, BLOCK_64X64, 4, PARSE, + parse_block); + } +} + +static int row_decode_worker_hook(void *arg1, void *arg2) { + ThreadData *const thread_data = (ThreadData *)arg1; + uint8_t **data_end = (uint8_t **)arg2; + VP9Decoder *const pbi = thread_data->pbi; + VP9_COMMON *const cm = &pbi->common; + RowMTWorkerData *const row_mt_worker_data = pbi->row_mt_worker_data; + const int aligned_cols = mi_cols_aligned_to_sb(cm->mi_cols); + const int aligned_rows = mi_cols_aligned_to_sb(cm->mi_rows); + const int sb_rows = aligned_rows >> MI_BLOCK_SIZE_LOG2; + const int tile_cols = 1 << cm->log2_tile_cols; + Job job; + LFWorkerData *lf_data = thread_data->lf_data; + VP9LfSync *lf_sync = thread_data->lf_sync; + volatile int corrupted = 0; + TileWorkerData *volatile tile_data_recon = NULL; + + while (!vp9_jobq_dequeue(&row_mt_worker_data->jobq, &job, sizeof(job), 1)) { + int mi_col; + const int mi_row = job.row_num; + + if (job.job_type == LPF_JOB) { + lf_data->start = mi_row; + lf_data->stop = lf_data->start + MI_BLOCK_SIZE; + + if (cm->lf.filter_level && !cm->skip_loop_filter && + mi_row < cm->mi_rows) { + vp9_loopfilter_job(lf_data, lf_sync); + } + } else if (job.job_type == RECON_JOB) { + const int cur_sb_row = mi_row >> MI_BLOCK_SIZE_LOG2; + const int is_last_row = sb_rows - 1 == cur_sb_row; + int mi_col_start, mi_col_end; + if (!tile_data_recon) + CHECK_MEM_ERROR(&cm->error, tile_data_recon, + vpx_memalign(32, sizeof(TileWorkerData))); + + tile_data_recon->xd = pbi->mb; + vp9_tile_init(&tile_data_recon->xd.tile, cm, 0, job.tile_col); + vp9_init_macroblockd(cm, &tile_data_recon->xd, tile_data_recon->dqcoeff); + mi_col_start = tile_data_recon->xd.tile.mi_col_start; + mi_col_end = tile_data_recon->xd.tile.mi_col_end; + + if (setjmp(tile_data_recon->error_info.jmp)) { + const int sb_cols = aligned_cols >> MI_BLOCK_SIZE_LOG2; + tile_data_recon->error_info.setjmp = 0; + corrupted = 1; + for (mi_col = mi_col_start; mi_col < mi_col_end; + mi_col += MI_BLOCK_SIZE) { + const int c = mi_col >> MI_BLOCK_SIZE_LOG2; + map_write(row_mt_worker_data, (cur_sb_row * sb_cols) + c, + (cur_sb_row * tile_cols) + job.tile_col); + } + if (is_last_row) { + vp9_tile_done(pbi); + } + continue; + } + + tile_data_recon->error_info.setjmp = 1; + tile_data_recon->xd.error_info = &tile_data_recon->error_info; + + recon_tile_row(tile_data_recon, pbi, mi_row, is_last_row, lf_sync, + job.tile_col); + + if (corrupted) + vpx_internal_error(&tile_data_recon->error_info, + VPX_CODEC_CORRUPT_FRAME, + "Failed to decode tile data"); + + if (is_last_row) { + vp9_tile_done(pbi); + } + } else if (job.job_type == PARSE_JOB) { + TileWorkerData *const tile_data = &pbi->tile_worker_data[job.tile_col]; + + if (setjmp(tile_data->error_info.jmp)) { + tile_data->error_info.setjmp = 0; + corrupted = 1; + vp9_tile_done(pbi); + continue; + } + + tile_data->xd = pbi->mb; + tile_data->xd.counts = + cm->frame_parallel_decoding_mode ? 0 : &tile_data->counts; + + tile_data->error_info.setjmp = 1; + + parse_tile_row(tile_data, pbi, mi_row, job.tile_col, data_end); + + corrupted |= tile_data->xd.corrupted; + if (corrupted) + vpx_internal_error(&tile_data->error_info, VPX_CODEC_CORRUPT_FRAME, + "Failed to decode tile data"); + + /* Queue in the recon_job for this row */ + { + Job recon_job; + recon_job.row_num = mi_row; + recon_job.tile_col = job.tile_col; + recon_job.job_type = RECON_JOB; + vp9_jobq_queue(&row_mt_worker_data->jobq, &recon_job, + sizeof(recon_job)); + } + + /* Queue next parse job */ + if (mi_row + MI_BLOCK_SIZE < cm->mi_rows) { + Job parse_job; + parse_job.row_num = mi_row + MI_BLOCK_SIZE; + parse_job.tile_col = job.tile_col; + parse_job.job_type = PARSE_JOB; + vp9_jobq_queue(&row_mt_worker_data->jobq, &parse_job, + sizeof(parse_job)); + } + } + } + + vpx_free(tile_data_recon); + return !corrupted; +} + +static const uint8_t *decode_tiles(VP9Decoder *pbi, const uint8_t *data, + const uint8_t *data_end) { + VP9_COMMON *const cm = &pbi->common; + const VPxWorkerInterface *const winterface = vpx_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; + TileWorkerData *tile_data = NULL; + + if (cm->lf.filter_level && !cm->skip_loop_filter && + pbi->lf_worker.data1 == NULL) { + CHECK_MEM_ERROR(&cm->error, pbi->lf_worker.data1, + vpx_memalign(32, sizeof(LFWorkerData))); + pbi->lf_worker.hook = 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); + + vp9_reset_lfm(cm); + + get_tile_buffers(pbi, data, data_end, tile_cols, tile_rows, tile_buffers); + + // 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) { + const TileBuffer *const buf = &tile_buffers[tile_row][tile_col]; + tile_data = pbi->tile_worker_data + tile_cols * tile_row + tile_col; + tile_data->xd = pbi->mb; + tile_data->xd.corrupted = 0; + tile_data->xd.counts = + cm->frame_parallel_decoding_mode ? NULL : &cm->counts; + vp9_zero(tile_data->dqcoeff); + vp9_tile_init(&tile_data->xd.tile, 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); + vp9_init_macroblockd(cm, &tile_data->xd, tile_data->dqcoeff); + } + } + + 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_worker_data + tile_cols * tile_row + col; + vp9_tile_set_col(&tile, 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) { + if (pbi->row_mt == 1) { + int plane; + RowMTWorkerData *const row_mt_worker_data = pbi->row_mt_worker_data; + for (plane = 0; plane < MAX_MB_PLANE; ++plane) { + tile_data->xd.plane[plane].eob = row_mt_worker_data->eob[plane]; + tile_data->xd.plane[plane].dqcoeff = + row_mt_worker_data->dqcoeff[plane]; + } + tile_data->xd.partition = row_mt_worker_data->partition; + process_partition(tile_data, pbi, mi_row, mi_col, BLOCK_64X64, 4, + PARSE, parse_block); + + for (plane = 0; plane < MAX_MB_PLANE; ++plane) { + tile_data->xd.plane[plane].eob = row_mt_worker_data->eob[plane]; + tile_data->xd.plane[plane].dqcoeff = + row_mt_worker_data->dqcoeff[plane]; + } + tile_data->xd.partition = row_mt_worker_data->partition; + process_partition(tile_data, pbi, mi_row, mi_col, BLOCK_64X64, 4, + RECON, recon_block); + } else { + decode_partition(tile_data, pbi, mi_row, mi_col, BLOCK_64X64, 4); + } + } + 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); + } + } + } + } + + // 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_worker_data + tile_cols * tile_rows - 1; + + return vpx_reader_find_end(&tile_data->bit_reader); +} + +static void set_rows_after_error(VP9LfSync *lf_sync, int start_row, int mi_rows, + int num_tiles_left, int total_num_tiles) { + do { + int mi_row; + const int aligned_rows = mi_cols_aligned_to_sb(mi_rows); + const int sb_rows = (aligned_rows >> MI_BLOCK_SIZE_LOG2); + const int corrupted = 1; + for (mi_row = start_row; mi_row < mi_rows; mi_row += MI_BLOCK_SIZE) { + const int is_last_row = (sb_rows - 1 == mi_row >> MI_BLOCK_SIZE_LOG2); + vp9_set_row(lf_sync, total_num_tiles, mi_row >> MI_BLOCK_SIZE_LOG2, + is_last_row, corrupted); + } + /* If there are multiple tiles, the second tile should start marking row + * progress from row 0. + */ + start_row = 0; + } while (num_tiles_left--); +} + +// On entry 'tile_data->data_end' points to the end of the input frame, on exit +// it is updated to reflect the bitreader position of the final tile column if +// present in the tile buffer group or NULL otherwise. +static int tile_worker_hook(void *arg1, void *arg2) { + TileWorkerData *const tile_data = (TileWorkerData *)arg1; + VP9Decoder *const pbi = (VP9Decoder *)arg2; + + TileInfo *volatile tile = &tile_data->xd.tile; + const int final_col = (1 << pbi->common.log2_tile_cols) - 1; + const uint8_t *volatile bit_reader_end = NULL; + VP9_COMMON *cm = &pbi->common; + + LFWorkerData *lf_data = tile_data->lf_data; + VP9LfSync *lf_sync = tile_data->lf_sync; + + volatile int mi_row = 0; + volatile int n = tile_data->buf_start; + if (setjmp(tile_data->error_info.jmp)) { + tile_data->error_info.setjmp = 0; + tile_data->xd.corrupted = 1; + tile_data->data_end = NULL; + if (pbi->lpf_mt_opt && cm->lf.filter_level && !cm->skip_loop_filter) { + const int num_tiles_left = tile_data->buf_end - n; + const int mi_row_start = mi_row; + set_rows_after_error(lf_sync, mi_row_start, cm->mi_rows, num_tiles_left, + 1 << cm->log2_tile_cols); + } + return 0; + } + tile_data->error_info.setjmp = 1; + + tile_data->xd.corrupted = 0; + + do { + int mi_col; + const TileBuffer *const buf = pbi->tile_buffers + n; + + /* Initialize to 0 is safe since we do not deal with streams that have + * more than one row of tiles. (So tile->mi_row_start will be 0) + */ + assert(cm->log2_tile_rows == 0); + mi_row = 0; + vp9_zero(tile_data->dqcoeff); + vp9_tile_init(tile, &pbi->common, 0, buf->col); + setup_token_decoder(buf->data, tile_data->data_end, buf->size, + &tile_data->error_info, &tile_data->bit_reader, + pbi->decrypt_cb, pbi->decrypt_state); + vp9_init_macroblockd(&pbi->common, &tile_data->xd, tile_data->dqcoeff); + // init resets xd.error_info + 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, mi_row, mi_col, BLOCK_64X64, 4); + } + if (pbi->lpf_mt_opt && cm->lf.filter_level && !cm->skip_loop_filter) { + const int aligned_rows = mi_cols_aligned_to_sb(cm->mi_rows); + const int sb_rows = (aligned_rows >> MI_BLOCK_SIZE_LOG2); + const int is_last_row = (sb_rows - 1 == mi_row >> MI_BLOCK_SIZE_LOG2); + vp9_set_row(lf_sync, 1 << cm->log2_tile_cols, + mi_row >> MI_BLOCK_SIZE_LOG2, is_last_row, + tile_data->xd.corrupted); + } + } + + if (buf->col == final_col) { + bit_reader_end = vpx_reader_find_end(&tile_data->bit_reader); + } + } while (!tile_data->xd.corrupted && ++n <= tile_data->buf_end); + + if (pbi->lpf_mt_opt && n < tile_data->buf_end && cm->lf.filter_level && + !cm->skip_loop_filter) { + /* This was not incremented in the tile loop, so increment before tiles left + * calculation + */ + ++n; + set_rows_after_error(lf_sync, 0, cm->mi_rows, tile_data->buf_end - n, + 1 << cm->log2_tile_cols); + } + + if (pbi->lpf_mt_opt && !tile_data->xd.corrupted && cm->lf.filter_level && + !cm->skip_loop_filter) { + vp9_loopfilter_rows(lf_data, lf_sync); + } + + tile_data->data_end = bit_reader_end; + return !tile_data->xd.corrupted; +} + +// sorts in descending order +static int compare_tile_buffers(const void *a, const void *b) { + const TileBuffer *const buf_a = (const TileBuffer *)a; + const TileBuffer *const buf_b = (const TileBuffer *)b; + return (buf_a->size < buf_b->size) - (buf_a->size > buf_b->size); +} + +static INLINE void init_mt(VP9Decoder *pbi) { + int n; + VP9_COMMON *const cm = &pbi->common; + VP9LfSync *lf_row_sync = &pbi->lf_row_sync; + const int aligned_mi_cols = mi_cols_aligned_to_sb(cm->mi_cols); + const VPxWorkerInterface *const winterface = vpx_get_worker_interface(); + + if (pbi->num_tile_workers == 0) { + const int num_threads = pbi->max_threads; + CHECK_MEM_ERROR(&cm->error, pbi->tile_workers, + vpx_malloc(num_threads * sizeof(*pbi->tile_workers))); + for (n = 0; n < num_threads; ++n) { + VPxWorker *const worker = &pbi->tile_workers[n]; + ++pbi->num_tile_workers; + + winterface->init(worker); + if (n < num_threads - 1 && !winterface->reset(worker)) { + do { + winterface->end(&pbi->tile_workers[pbi->num_tile_workers - 1]); + } while (--pbi->num_tile_workers != 0); + vpx_free(pbi->tile_workers); + pbi->tile_workers = NULL; + vpx_internal_error(&cm->error, VPX_CODEC_ERROR, + "Tile decoder thread creation failed"); + } + } + } + + // Initialize LPF + if ((pbi->lpf_mt_opt || pbi->row_mt) && cm->lf.filter_level && + !cm->skip_loop_filter) { + vp9_lpf_mt_init(lf_row_sync, cm, cm->lf.filter_level, + pbi->num_tile_workers); + } + + // 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); + + vp9_reset_lfm(cm); +} + +static const uint8_t *decode_tiles_row_wise_mt(VP9Decoder *pbi, + const uint8_t *data, + const uint8_t *data_end) { + VP9_COMMON *const cm = &pbi->common; + RowMTWorkerData *const row_mt_worker_data = pbi->row_mt_worker_data; + const VPxWorkerInterface *const winterface = vpx_get_worker_interface(); + const int tile_cols = 1 << cm->log2_tile_cols; + const int tile_rows = 1 << cm->log2_tile_rows; + const int num_workers = pbi->max_threads; + int i, n; + int col; + int corrupted = 0; + const int sb_rows = mi_cols_aligned_to_sb(cm->mi_rows) >> MI_BLOCK_SIZE_LOG2; + const int sb_cols = mi_cols_aligned_to_sb(cm->mi_cols) >> MI_BLOCK_SIZE_LOG2; + VP9LfSync *lf_row_sync = &pbi->lf_row_sync; + YV12_BUFFER_CONFIG *const new_fb = get_frame_new_buffer(cm); + + assert(tile_cols <= (1 << 6)); + assert(tile_rows == 1); + (void)tile_rows; + + memset(row_mt_worker_data->recon_map, 0, + sb_rows * sb_cols * sizeof(*row_mt_worker_data->recon_map)); + + init_mt(pbi); + + // Reset tile decoding hook + for (n = 0; n < num_workers; ++n) { + VPxWorker *const worker = &pbi->tile_workers[n]; + ThreadData *const thread_data = &pbi->row_mt_worker_data->thread_data[n]; + winterface->sync(worker); + + if (cm->lf.filter_level && !cm->skip_loop_filter) { + thread_data->lf_sync = lf_row_sync; + thread_data->lf_data = &thread_data->lf_sync->lfdata[n]; + vp9_loop_filter_data_reset(thread_data->lf_data, new_fb, cm, + pbi->mb.plane); + } + + thread_data->pbi = pbi; + + worker->hook = row_decode_worker_hook; + worker->data1 = thread_data; + worker->data2 = (void *)&row_mt_worker_data->data_end; + } + + for (col = 0; col < tile_cols; ++col) { + TileWorkerData *const tile_data = &pbi->tile_worker_data[col]; + tile_data->xd = pbi->mb; + tile_data->xd.counts = + cm->frame_parallel_decoding_mode ? NULL : &tile_data->counts; + } + + /* Reset the jobq to start of the jobq buffer */ + vp9_jobq_reset(&row_mt_worker_data->jobq); + row_mt_worker_data->num_tiles_done = 0; + row_mt_worker_data->data_end = NULL; + + // Load tile data into tile_buffers + get_tile_buffers(pbi, data, data_end, tile_cols, tile_rows, + &pbi->tile_buffers); + + // Initialize thread frame counts. + if (!cm->frame_parallel_decoding_mode) { + for (col = 0; col < tile_cols; ++col) { + TileWorkerData *const tile_data = &pbi->tile_worker_data[col]; + vp9_zero(tile_data->counts); + } + } + + // queue parse jobs for 0th row of every tile + for (col = 0; col < tile_cols; ++col) { + Job parse_job; + parse_job.row_num = 0; + parse_job.tile_col = col; + parse_job.job_type = PARSE_JOB; + vp9_jobq_queue(&row_mt_worker_data->jobq, &parse_job, sizeof(parse_job)); + } + + for (i = 0; i < num_workers; ++i) { + VPxWorker *const worker = &pbi->tile_workers[i]; + worker->had_error = 0; + if (i == num_workers - 1) { + winterface->execute(worker); + } else { + winterface->launch(worker); + } + } + + for (; n > 0; --n) { + VPxWorker *const worker = &pbi->tile_workers[n - 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. + corrupted |= !winterface->sync(worker); + } + + pbi->mb.corrupted = corrupted; + + { + /* Set data end */ + TileWorkerData *const tile_data = &pbi->tile_worker_data[tile_cols - 1]; + row_mt_worker_data->data_end = vpx_reader_find_end(&tile_data->bit_reader); + } + + // Accumulate thread frame counts. + if (!cm->frame_parallel_decoding_mode) { + for (i = 0; i < tile_cols; ++i) { + TileWorkerData *const tile_data = &pbi->tile_worker_data[i]; + vp9_accumulate_frame_counts(&cm->counts, &tile_data->counts, 1); + } + } + + return row_mt_worker_data->data_end; +} + +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 VPxWorkerInterface *const winterface = vpx_get_worker_interface(); + const uint8_t *bit_reader_end = NULL; + VP9LfSync *lf_row_sync = &pbi->lf_row_sync; + YV12_BUFFER_CONFIG *const new_fb = get_frame_new_buffer(cm); + const int tile_cols = 1 << cm->log2_tile_cols; + const int tile_rows = 1 << cm->log2_tile_rows; + const int num_workers = VPXMIN(pbi->max_threads, tile_cols); + int n; + + assert(tile_cols <= (1 << 6)); + assert(tile_rows == 1); + (void)tile_rows; + + init_mt(pbi); + + // Reset tile decoding hook + for (n = 0; n < num_workers; ++n) { + VPxWorker *const worker = &pbi->tile_workers[n]; + TileWorkerData *const tile_data = + &pbi->tile_worker_data[n + pbi->total_tiles]; + winterface->sync(worker); + + if (pbi->lpf_mt_opt && cm->lf.filter_level && !cm->skip_loop_filter) { + tile_data->lf_sync = lf_row_sync; + tile_data->lf_data = &tile_data->lf_sync->lfdata[n]; + vp9_loop_filter_data_reset(tile_data->lf_data, new_fb, cm, pbi->mb.plane); + tile_data->lf_data->y_only = 0; + } + + tile_data->xd = pbi->mb; + tile_data->xd.counts = + cm->frame_parallel_decoding_mode ? NULL : &tile_data->counts; + worker->hook = tile_worker_hook; + worker->data1 = tile_data; + worker->data2 = pbi; + } + + // Load tile data into tile_buffers + get_tile_buffers(pbi, data, data_end, tile_cols, tile_rows, + &pbi->tile_buffers); + + // Sort the buffers based on size in descending order. + qsort(pbi->tile_buffers, tile_cols, sizeof(pbi->tile_buffers[0]), + compare_tile_buffers); + + if (num_workers == tile_cols) { + // Rearrange the tile buffers such that 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. + const TileBuffer largest = pbi->tile_buffers[0]; + memmove(pbi->tile_buffers, pbi->tile_buffers + 1, + (tile_cols - 1) * sizeof(pbi->tile_buffers[0])); + pbi->tile_buffers[tile_cols - 1] = largest; + } else { + int start = 0, end = tile_cols - 2; + TileBuffer tmp; + + // Interleave the tiles to distribute the load between threads, assuming a + // larger tile implies it is more difficult to decode. + while (start < end) { + tmp = pbi->tile_buffers[start]; + pbi->tile_buffers[start] = pbi->tile_buffers[end]; + pbi->tile_buffers[end] = tmp; + start += 2; + end -= 2; + } + } + + // Initialize thread frame counts. + if (!cm->frame_parallel_decoding_mode) { + for (n = 0; n < num_workers; ++n) { + TileWorkerData *const tile_data = + (TileWorkerData *)pbi->tile_workers[n].data1; + vp9_zero(tile_data->counts); + } + } + + { + const int base = tile_cols / num_workers; + const int remain = tile_cols % num_workers; + int buf_start = 0; + + for (n = 0; n < num_workers; ++n) { + const int count = base + (remain + n) / num_workers; + VPxWorker *const worker = &pbi->tile_workers[n]; + TileWorkerData *const tile_data = (TileWorkerData *)worker->data1; + + tile_data->buf_start = buf_start; + tile_data->buf_end = buf_start + count - 1; + tile_data->data_end = data_end; + buf_start += count; + + worker->had_error = 0; + if (n == num_workers - 1) { + assert(tile_data->buf_end == tile_cols - 1); + winterface->execute(worker); + } else { + winterface->launch(worker); + } + } + + for (; n > 0; --n) { + VPxWorker *const worker = &pbi->tile_workers[n - 1]; + TileWorkerData *const tile_data = (TileWorkerData *)worker->data1; + // 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 (!bit_reader_end) bit_reader_end = tile_data->data_end; + } + } + + // Accumulate thread frame counts. + if (!cm->frame_parallel_decoding_mode) { + for (n = 0; n < num_workers; ++n) { + TileWorkerData *const tile_data = + (TileWorkerData *)pbi->tile_workers[n].data1; + vp9_accumulate_frame_counts(&cm->counts, &tile_data->counts, 1); + } + } + + assert(bit_reader_end || pbi->mb.corrupted); + 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"); +} + +static void read_bitdepth_colorspace_sampling(VP9_COMMON *cm, + struct vpx_read_bit_buffer *rb) { + if (cm->profile >= PROFILE_2) { + cm->bit_depth = vpx_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 = vpx_rb_read_literal(rb, 3); + if (cm->color_space != VPX_CS_SRGB) { + cm->color_range = (vpx_color_range_t)vpx_rb_read_bit(rb); + if (cm->profile == PROFILE_1 || cm->profile == PROFILE_3) { + cm->subsampling_x = vpx_rb_read_bit(rb); + cm->subsampling_y = vpx_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 (vpx_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 { + cm->color_range = VPX_CR_FULL_RANGE; + 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 (vpx_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 INLINE void flush_all_fb_on_key(VP9_COMMON *cm) { + if (cm->frame_type == KEY_FRAME && cm->current_video_frame > 0) { + RefCntBuffer *const frame_bufs = cm->buffer_pool->frame_bufs; + BufferPool *const pool = cm->buffer_pool; + int i; + for (i = 0; i < FRAME_BUFFERS; ++i) { + if (i == cm->new_fb_idx) continue; + frame_bufs[i].ref_count = 0; + if (!frame_bufs[i].released) { + pool->release_fb_cb(pool->cb_priv, &frame_bufs[i].raw_frame_buffer); + frame_bufs[i].released = 1; + } + } + } +} + +static size_t read_uncompressed_header(VP9Decoder *pbi, + struct vpx_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; + cm->last_intra_only = cm->intra_only; + + if (vpx_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 CONFIG_VP9_HIGHBITDEPTH + if (cm->profile >= MAX_PROFILES) + vpx_internal_error(&cm->error, VPX_CODEC_UNSUP_BITSTREAM, + "Unsupported bitstream profile"); +#else + if (cm->profile >= PROFILE_2) + vpx_internal_error(&cm->error, VPX_CODEC_UNSUP_BITSTREAM, + "Unsupported bitstream profile"); +#endif + + cm->show_existing_frame = vpx_rb_read_bit(rb); + if (cm->show_existing_frame) { + // Show an existing frame directly. + const int frame_to_show = cm->ref_frame_map[vpx_rb_read_literal(rb, 3)]; + if (frame_to_show < 0 || frame_bufs[frame_to_show].ref_count < 1) { + 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); + pbi->refresh_frame_flags = 0; + cm->lf.filter_level = 0; + cm->show_frame = 1; + + return 0; + } + + cm->frame_type = (FRAME_TYPE)vpx_rb_read_bit(rb); + cm->show_frame = vpx_rb_read_bit(rb); + cm->error_resilient_mode = vpx_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)); + flush_all_fb_on_key(cm); + pbi->need_resync = 0; + } + } else { + cm->intra_only = cm->show_frame ? 0 : vpx_rb_read_bit(rb); + + cm->reset_frame_context = + cm->error_resilient_mode ? 0 : vpx_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->color_range = VPX_CR_STUDIO_RANGE; + 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 = vpx_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 = vpx_rb_read_literal(rb, REF_FRAMES); + for (i = 0; i < REFS_PER_FRAME; ++i) { + const int ref = vpx_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] = vpx_rb_read_bit(rb); + } + + setup_frame_size_with_refs(cm, rb); + + cm->allow_high_precision_mv = vpx_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; + get_frame_new_buffer(cm)->color_range = cm->color_range; + get_frame_new_buffer(cm)->render_width = cm->render_width; + get_frame_new_buffer(cm)->render_height = cm->render_height; + + 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 = vpx_rb_read_bit(rb); + cm->frame_parallel_decoding_mode = vpx_rb_read_bit(rb); + if (!cm->frame_parallel_decoding_mode) vp9_zero(cm->counts); + } 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 = vpx_rb_read_literal(rb, FRAME_CONTEXTS_LOG2); + + // Generate next_ref_frame_map. + 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; + } + 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); + if (pbi->row_mt == 1) { + int num_sbs = 1; + const int aligned_rows = mi_cols_aligned_to_sb(cm->mi_rows); + const int sb_rows = aligned_rows >> MI_BLOCK_SIZE_LOG2; + const int num_jobs = sb_rows << cm->log2_tile_cols; + + if (pbi->row_mt_worker_data == NULL) { + CHECK_MEM_ERROR(&cm->error, pbi->row_mt_worker_data, + vpx_calloc(1, sizeof(*pbi->row_mt_worker_data))); +#if CONFIG_MULTITHREAD + pthread_mutex_init(&pbi->row_mt_worker_data->recon_done_mutex, NULL); +#endif + } + + if (pbi->max_threads > 1) { + const int aligned_cols = mi_cols_aligned_to_sb(cm->mi_cols); + const int sb_cols = aligned_cols >> MI_BLOCK_SIZE_LOG2; + + num_sbs = sb_cols * sb_rows; + } + + if (num_sbs > pbi->row_mt_worker_data->num_sbs || + num_jobs > pbi->row_mt_worker_data->num_jobs) { + vp9_dec_free_row_mt_mem(pbi->row_mt_worker_data); + vp9_dec_alloc_row_mt_mem(pbi->row_mt_worker_data, cm, num_sbs, + pbi->max_threads, num_jobs); + } + vp9_jobq_alloc(pbi); + } + sz = vpx_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; + vpx_reader r; + int k; + + if (vpx_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) + vp9_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 vpx_reader_has_error(&r); +} + +static struct vpx_read_bit_buffer *init_read_bit_buffer( + VP9Decoder *pbi, struct vpx_read_bit_buffer *rb, const uint8_t *data, + const uint8_t *data_end, uint8_t clear_data[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)VPXMIN(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; +} + +//------------------------------------------------------------------------------ + +int vp9_read_sync_code(struct vpx_read_bit_buffer *const rb) { + return vpx_rb_read_literal(rb, 8) == VP9_SYNC_CODE_0 && + vpx_rb_read_literal(rb, 8) == VP9_SYNC_CODE_1 && + vpx_rb_read_literal(rb, 8) == VP9_SYNC_CODE_2; +} + +void vp9_read_frame_size(struct vpx_read_bit_buffer *rb, int *width, + int *height) { + *width = vpx_rb_read_literal(rb, 16) + 1; + *height = vpx_rb_read_literal(rb, 16) + 1; +} + +BITSTREAM_PROFILE vp9_read_profile(struct vpx_read_bit_buffer *rb) { + int profile = vpx_rb_read_bit(rb); + profile |= vpx_rb_read_bit(rb) << 1; + if (profile > 2) profile += vpx_rb_read_bit(rb); + return (BITSTREAM_PROFILE)profile; +} + +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 vpx_read_bit_buffer rb; + 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); +#if CONFIG_BITSTREAM_DEBUG || CONFIG_MISMATCH_DEBUG + bitstream_queue_set_frame_read(cm->current_video_frame * 2 + cm->show_frame); +#endif +#if CONFIG_MISMATCH_DEBUG + mismatch_move_frame_idx_r(); +#endif + 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 += vpx_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->last_intra_only && + cm->last_show_frame && (cm->last_frame_type != KEY_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."); + + 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 (pbi->tile_worker_data == NULL || + (tile_cols * tile_rows) != pbi->total_tiles) { + const int num_tile_workers = + tile_cols * tile_rows + ((pbi->max_threads > 1) ? pbi->max_threads : 0); + const size_t twd_size = num_tile_workers * sizeof(*pbi->tile_worker_data); + // Ensure tile data offsets will be properly aligned. This may fail on + // platforms without DECLARE_ALIGNED(). + assert((sizeof(*pbi->tile_worker_data) % 16) == 0); + vpx_free(pbi->tile_worker_data); + CHECK_MEM_ERROR(&cm->error, pbi->tile_worker_data, + vpx_memalign(32, twd_size)); + pbi->total_tiles = tile_rows * tile_cols; + } + + if (pbi->max_threads > 1 && tile_rows == 1 && + (tile_cols > 1 || pbi->row_mt == 1)) { + if (pbi->row_mt == 1) { + *p_data_end = + decode_tiles_row_wise_mt(pbi, data + first_partition_size, data_end); + } else { + // Multi-threaded tile decoder + *p_data_end = decode_tiles_mt(pbi, data + first_partition_size, data_end); + if (!pbi->lpf_mt_opt) { + 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 { + 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; +} |