diff options
Diffstat (limited to 'thirdparty/libvpx/vp9/decoder/vp9_decodeframe.c')
| -rw-r--r-- | thirdparty/libvpx/vp9/decoder/vp9_decodeframe.c | 2271 |
1 files changed, 0 insertions, 2271 deletions
diff --git a/thirdparty/libvpx/vp9/decoder/vp9_decodeframe.c b/thirdparty/libvpx/vp9/decoder/vp9_decodeframe.c deleted file mode 100644 index d63912932c..0000000000 --- a/thirdparty/libvpx/vp9/decoder/vp9_decodeframe.c +++ /dev/null @@ -1,2271 +0,0 @@ -/* - * Copyright (c) 2010 The WebM project authors. All Rights Reserved. - * - * Use of this source code is governed by a BSD-style license - * that can be found in the LICENSE file in the root of the source - * tree. An additional intellectual property rights grant can be found - * in the file PATENTS. All contributing project authors may - * be found in the AUTHORS file in the root of the source tree. - */ - -#include <assert.h> -#include <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" - -#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" - -#define MAX_VP9_HEADER_SIZE 80 - -static int is_compound_reference_allowed(const VP9_COMMON *cm) { - int i; - for (i = 1; i < REFS_PER_FRAME; ++i) - if (cm->ref_frame_sign_bias[i + 1] != cm->ref_frame_sign_bias[1]) - return 1; - - return 0; -} - -static void setup_compound_reference_mode(VP9_COMMON *cm) { - if (cm->ref_frame_sign_bias[LAST_FRAME] == - cm->ref_frame_sign_bias[GOLDEN_FRAME]) { - cm->comp_fixed_ref = ALTREF_FRAME; - cm->comp_var_ref[0] = LAST_FRAME; - cm->comp_var_ref[1] = GOLDEN_FRAME; - } else if (cm->ref_frame_sign_bias[LAST_FRAME] == - cm->ref_frame_sign_bias[ALTREF_FRAME]) { - cm->comp_fixed_ref = GOLDEN_FRAME; - cm->comp_var_ref[0] = LAST_FRAME; - cm->comp_var_ref[1] = ALTREF_FRAME; - } else { - cm->comp_fixed_ref = LAST_FRAME; - cm->comp_var_ref[0] = GOLDEN_FRAME; - cm->comp_var_ref[1] = ALTREF_FRAME; - } -} - -static int read_is_valid(const uint8_t *start, size_t len, const uint8_t *end) { - return len != 0 && len <= (size_t)(end - start); -} - -static int decode_unsigned_max(struct 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 (is_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) { - if (xd->lossless) { - vp9_highbd_iwht4x4_add(dqcoeff, dst, stride, eob, xd->bd); - } else { - switch (tx_size) { - case TX_4X4: - vp9_highbd_idct4x4_add(dqcoeff, dst, stride, eob, xd->bd); - break; - case TX_8X8: - vp9_highbd_idct8x8_add(dqcoeff, dst, stride, eob, xd->bd); - break; - case TX_16X16: - vp9_highbd_idct16x16_add(dqcoeff, dst, stride, eob, xd->bd); - break; - case TX_32X32: - vp9_highbd_idct32x32_add(dqcoeff, dst, 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) { - if (xd->lossless) { - vp9_highbd_iwht4x4_add(dqcoeff, dst, stride, eob, xd->bd); - } else { - switch (tx_size) { - case TX_4X4: - vp9_highbd_iht4x4_add(tx_type, dqcoeff, dst, stride, eob, xd->bd); - break; - case TX_8X8: - vp9_highbd_iht8x8_add(tx_type, dqcoeff, dst, stride, eob, xd->bd); - break; - case TX_16X16: - vp9_highbd_iht16x16_add(tx_type, dqcoeff, dst, stride, eob, xd->bd); - break; - case TX_32X32: - vp9_highbd_idct32x32_add(dqcoeff, dst, 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(MACROBLOCKD *const xd, - vpx_reader *r, - MODE_INFO *const mi, - int plane, - int row, int col, - TX_SIZE tx_size) { - 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 scan_order *sc = (plane || xd->lossless) ? - &vp9_default_scan_orders[tx_size] : &vp9_scan_orders[tx_size][tx_type]; - const int eob = vp9_decode_block_tokens(xd, plane, sc, col, row, tx_size, - r, mi->segment_id); - if (eob > 0) { - inverse_transform_block_intra(xd, plane, tx_type, tx_size, - dst, pd->dst.stride, eob); - } - } -} - -static int reconstruct_inter_block(MACROBLOCKD *const xd, vpx_reader *r, - MODE_INFO *const mi, int plane, - int row, int col, TX_SIZE tx_size) { - struct macroblockd_plane *const pd = &xd->plane[plane]; - const scan_order *sc = &vp9_default_scan_orders[tx_size]; - const int eob = vp9_decode_block_tokens(xd, plane, sc, col, row, tx_size, r, - mi->segment_id); - - 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); - } - 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(const uint8_t *buf_ptr1, int pre_buf_stride, - int x0, int y0, int b_w, int b_h, - int frame_width, int frame_height, - int border_offset, - uint8_t *const dst, int dst_buf_stride, - int subpel_x, int subpel_y, - const InterpKernel *kernel, - const struct scale_factors *sf, - MACROBLOCKD *xd, - int w, int h, int ref, int xs, int ys) { - DECLARE_ALIGNED(16, uint16_t, mc_buf_high[80 * 2 * 80 * 2]); - const uint8_t *buf_ptr; - - if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) { - high_build_mc_border(buf_ptr1, pre_buf_stride, mc_buf_high, b_w, - x0, y0, b_w, b_h, frame_width, frame_height); - buf_ptr = CONVERT_TO_BYTEPTR(mc_buf_high) + border_offset; - } else { - build_mc_border(buf_ptr1, pre_buf_stride, (uint8_t *)mc_buf_high, b_w, - x0, y0, b_w, b_h, frame_width, frame_height); - buf_ptr = ((uint8_t *)mc_buf_high) + border_offset; - } - - if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) { - highbd_inter_predictor(buf_ptr, b_w, dst, dst_buf_stride, subpel_x, - subpel_y, sf, w, h, ref, kernel, xs, ys, xd->bd); - } else { - inter_predictor(buf_ptr, b_w, dst, dst_buf_stride, subpel_x, - subpel_y, sf, w, h, ref, kernel, xs, ys); - } -} -#else -static void extend_and_predict(const uint8_t *buf_ptr1, int pre_buf_stride, - int x0, int y0, int b_w, int b_h, - int frame_width, int frame_height, - int border_offset, - uint8_t *const dst, int dst_buf_stride, - int subpel_x, int subpel_y, - const InterpKernel *kernel, - const struct scale_factors *sf, - int w, int h, int ref, int xs, int ys) { - DECLARE_ALIGNED(16, uint8_t, mc_buf[80 * 2 * 80 * 2]); - const uint8_t *buf_ptr; - - build_mc_border(buf_ptr1, pre_buf_stride, mc_buf, b_w, - x0, y0, b_w, b_h, frame_width, frame_height); - buf_ptr = mc_buf + border_offset; - - inter_predictor(buf_ptr, b_w, dst, dst_buf_stride, subpel_x, - subpel_y, sf, w, h, ref, kernel, xs, ys); -} -#endif // CONFIG_VP9_HIGHBITDEPTH - -static void dec_build_inter_predictors(VPxWorker *const worker, 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 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; - } - - // Wait until reference block is ready. Pad 7 more pixels as last 7 - // pixels of each superblock row can be changed by next superblock row. - if (worker != NULL) - vp9_frameworker_wait(worker, ref_frame_buf, - VPXMAX(0, (y1 + 7)) << (plane == 0 ? 0 : 1)); - - // Skip border extension if block is inside the frame. - if (x0 < 0 || x0 > frame_width - 1 || x1 < 0 || x1 > frame_width - 1 || - y0 < 0 || y0 > frame_height - 1 || y1 < 0 || y1 > frame_height - 1) { - // Extend the border. - const uint8_t *const buf_ptr1 = ref_frame + y0 * buf_stride + x0; - const int b_w = x1 - x0 + 1; - const int b_h = y1 - y0 + 1; - const int border_offset = y_pad * 3 * b_w + x_pad * 3; - - extend_and_predict(buf_ptr1, buf_stride, x0, y0, b_w, b_h, - frame_width, frame_height, border_offset, - dst, dst_buf->stride, - subpel_x, subpel_y, - kernel, sf, -#if CONFIG_VP9_HIGHBITDEPTH - xd, -#endif - w, h, ref, xs, ys); - return; - } - } else { - // Wait until reference block is ready. Pad 7 more pixels as last 7 - // pixels of each superblock row can be changed by next superblock row. - if (worker != NULL) { - const int y1 = (y0_16 + (h - 1) * ys) >> SUBPEL_BITS; - vp9_frameworker_wait(worker, ref_frame_buf, - VPXMAX(0, (y1 + 7)) << (plane == 0 ? 0 : 1)); - } - } -#if CONFIG_VP9_HIGHBITDEPTH - if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) { - highbd_inter_predictor(buf_ptr, buf_stride, dst, dst_buf->stride, subpel_x, - subpel_y, sf, w, h, ref, kernel, xs, ys, xd->bd); - } else { - inter_predictor(buf_ptr, buf_stride, dst, dst_buf->stride, subpel_x, - subpel_y, sf, w, h, ref, kernel, xs, ys); - } -#else - inter_predictor(buf_ptr, buf_stride, dst, dst_buf->stride, subpel_x, - subpel_y, sf, w, h, ref, kernel, xs, ys); -#endif // CONFIG_VP9_HIGHBITDEPTH -} - -static void dec_build_inter_predictors_sb(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; - VPxWorker *const fwo = pbi->frame_parallel_decode ? - pbi->frame_worker_owner : NULL; - - 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(fwo, 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(fwo, 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 TX_SIZE dec_get_uv_tx_size(const MODE_INFO *mi, - int n4_wl, int n4_hl) { - // get minimum log2 num4x4s dimension - const int x = VPXMIN(n4_wl, n4_hl); - return VPXMIN(mi->tx_size, x); -} - -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(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 void decode_block(VP9Decoder *const pbi, MACROBLOCKD *const xd, - int mi_row, int mi_col, - vpx_reader *r, 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); - - 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(pbi, xd, mi_row, mi_col, r, 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 ? dec_get_uv_tx_size(mi, pd->n4_wl, pd->n4_hl) - : 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(xd, r, mi, plane, - row, col, tx_size); - } - } else { - // Prediction - dec_build_inter_predictors_sb(pbi, xd, mi_row, mi_col); - - // 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 ? dec_get_uv_tx_size(mi, pd->n4_wl, pd->n4_hl) - : 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(xd, r, mi, plane, row, col, - tx_size); - } - - 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 INLINE int dec_partition_plane_context(const MACROBLOCKD *xd, - int mi_row, int mi_col, - int bsl) { - const PARTITION_CONTEXT *above_ctx = xd->above_seg_context + mi_col; - const PARTITION_CONTEXT *left_ctx = 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(MACROBLOCKD *xd, - int mi_row, int mi_col, - BLOCK_SIZE subsize, - int bw) { - PARTITION_CONTEXT *const above_ctx = xd->above_seg_context + mi_col; - PARTITION_CONTEXT *const left_ctx = 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(MACROBLOCKD *xd, int mi_row, int mi_col, - vpx_reader *r, - int has_rows, int has_cols, int bsl) { - const int ctx = dec_partition_plane_context(xd, mi_row, mi_col, bsl); - const vpx_prob *const probs = get_partition_probs(xd, ctx); - FRAME_COUNTS *counts = xd->counts; - PARTITION_TYPE p; - - 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(VP9Decoder *const pbi, MACROBLOCKD *const xd, - int mi_row, int mi_col, - vpx_reader* r, 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; - - if (mi_row >= cm->mi_rows || mi_col >= cm->mi_cols) - return; - - partition = read_partition(xd, mi_row, mi_col, r, 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(pbi, xd, mi_row, mi_col, r, subsize, 1, 1); - } else { - switch (partition) { - case PARTITION_NONE: - decode_block(pbi, xd, mi_row, mi_col, r, subsize, n4x4_l2, n4x4_l2); - break; - case PARTITION_HORZ: - decode_block(pbi, xd, mi_row, mi_col, r, subsize, n4x4_l2, n8x8_l2); - if (has_rows) - decode_block(pbi, xd, mi_row + hbs, mi_col, r, subsize, n4x4_l2, - n8x8_l2); - break; - case PARTITION_VERT: - decode_block(pbi, xd, mi_row, mi_col, r, subsize, n8x8_l2, n4x4_l2); - if (has_cols) - decode_block(pbi, xd, mi_row, mi_col + hbs, r, subsize, n8x8_l2, - n4x4_l2); - break; - case PARTITION_SPLIT: - decode_partition(pbi, xd, mi_row, mi_col, r, subsize, n8x8_l2); - decode_partition(pbi, xd, mi_row, mi_col + hbs, r, subsize, n8x8_l2); - decode_partition(pbi, xd, mi_row + hbs, mi_col, r, subsize, n8x8_l2); - decode_partition(pbi, xd, mi_row + hbs, mi_col + hbs, r, 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(xd, 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 restrict - // it to the portion that can be (for EC mode) or throw an error. - if (!read_is_valid(data, read_size, data_end)) - vpx_internal_error(error_info, VPX_CODEC_CORRUPT_FRAME, - "Truncated packet or corrupt tile length"); - - if (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, cm->cur_frame->mvs, - (MV_REF *)vpx_calloc(cm->mi_rows * cm->mi_cols, - sizeof(*cm->cur_frame->mvs))); -} - -static void resize_context_buffers(VP9_COMMON *cm, int width, int height) { -#if CONFIG_SIZE_LIMIT - if (width > DECODE_WIDTH_LIMIT || height > DECODE_HEIGHT_LIMIT) - vpx_internal_error(&cm->error, VPX_CODEC_CORRUPT_FRAME, - "Dimensions of %dx%d beyond allowed size of %dx%d.", - width, height, DECODE_WIDTH_LIMIT, DECODE_HEIGHT_LIMIT); -#endif - if (cm->width != width || cm->height != height) { - const int new_mi_rows = - ALIGN_POWER_OF_TWO(height, MI_SIZE_LOG2) >> MI_SIZE_LOG2; - const int new_mi_cols = - ALIGN_POWER_OF_TWO(width, MI_SIZE_LOG2) >> MI_SIZE_LOG2; - - // Allocations in vp9_alloc_context_buffers() depend on individual - // dimensions as well as the overall size. - if (new_mi_cols > cm->mi_cols || new_mi_rows > cm->mi_rows) { - if (vp9_alloc_context_buffers(cm, width, height)) - vpx_internal_error(&cm->error, VPX_CODEC_MEM_ERROR, - "Failed to allocate context buffers"); - } else { - vp9_set_mb_mi(cm, width, height); - } - vp9_init_context_buffers(cm); - cm->width = width; - cm->height = height; - } - if (cm->cur_frame->mvs == NULL || cm->mi_rows > cm->cur_frame->mi_rows || - cm->mi_cols > cm->cur_frame->mi_cols) { - resize_mv_buffer(cm); - } -} - -static void setup_frame_size(VP9_COMMON *cm, struct 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); - - lock_buffer_pool(pool); - 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)) { - unlock_buffer_pool(pool); - vpx_internal_error(&cm->error, VPX_CODEC_MEM_ERROR, - "Failed to allocate frame buffer"); - } - unlock_buffer_pool(pool); - - pool->frame_bufs[cm->new_fb_idx].buf.subsampling_x = cm->subsampling_x; - pool->frame_bufs[cm->new_fb_idx].buf.subsampling_y = cm->subsampling_y; - pool->frame_bufs[cm->new_fb_idx].buf.bit_depth = (unsigned int)cm->bit_depth; - pool->frame_bufs[cm->new_fb_idx].buf.color_space = cm->color_space; - 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); - - lock_buffer_pool(pool); - 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)) { - unlock_buffer_pool(pool); - vpx_internal_error(&cm->error, VPX_CODEC_MEM_ERROR, - "Failed to allocate frame buffer"); - } - unlock_buffer_pool(pool); - - pool->frame_bufs[cm->new_fb_idx].buf.subsampling_x = cm->subsampling_x; - pool->frame_bufs[cm->new_fb_idx].buf.subsampling_y = cm->subsampling_y; - pool->frame_bufs[cm->new_fb_idx].buf.bit_depth = (unsigned int)cm->bit_depth; - pool->frame_bufs[cm->new_fb_idx].buf.color_space = cm->color_space; - 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 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, pbi->lf_worker.data1, - vpx_memalign(32, sizeof(LFWorkerData))); - pbi->lf_worker.hook = (VPxWorkerHook)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) { - decode_partition(pbi, &tile_data->xd, mi_row, - mi_col, &tile_data->bit_reader, 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); - } - } - // After loopfiltering, the last 7 row pixels in each superblock row may - // still be changed by the longest loopfilter of the next superblock - // row. - if (pbi->frame_parallel_decode) - vp9_frameworker_broadcast(pbi->cur_buf, - mi_row << MI_BLOCK_SIZE_LOG2); - } - } - - // Loopfilter remaining rows in the frame. - if (cm->lf.filter_level && !cm->skip_loop_filter) { - LFWorkerData *const lf_data = (LFWorkerData*)pbi->lf_worker.data1; - winterface->sync(&pbi->lf_worker); - lf_data->start = lf_data->stop; - lf_data->stop = cm->mi_rows; - winterface->execute(&pbi->lf_worker); - } - - // Get last tile data. - tile_data = pbi->tile_worker_data + tile_cols * tile_rows - 1; - - if (pbi->frame_parallel_decode) - vp9_frameworker_broadcast(pbi->cur_buf, INT_MAX); - return vpx_reader_find_end(&tile_data->bit_reader); -} - -// 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(TileWorkerData *const tile_data, - VP9Decoder *const pbi) { - 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; - volatile int n = tile_data->buf_start; - tile_data->error_info.setjmp = 1; - - if (setjmp(tile_data->error_info.jmp)) { - tile_data->error_info.setjmp = 0; - tile_data->xd.corrupted = 1; - tile_data->data_end = NULL; - return 0; - } - - tile_data->xd.error_info = &tile_data->error_info; - tile_data->xd.corrupted = 0; - - do { - int mi_row, mi_col; - const TileBuffer *const buf = pbi->tile_buffers + n; - 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); - - 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(pbi, &tile_data->xd, mi_row, mi_col, - &tile_data->bit_reader, BLOCK_64X64, 4); - } - } - - 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); - - 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 buf1 = (const TileBuffer*)a; - const TileBuffer *const buf2 = (const TileBuffer*)b; - return (int)(buf2->size - buf1->size); -} - -static const uint8_t *decode_tiles_mt(VP9Decoder *pbi, - const uint8_t *data, - const uint8_t *data_end) { - VP9_COMMON *const cm = &pbi->common; - const VPxWorkerInterface *const winterface = vpx_get_worker_interface(); - const uint8_t *bit_reader_end = NULL; - const int aligned_mi_cols = mi_cols_aligned_to_sb(cm->mi_cols); - const int tile_cols = 1 << cm->log2_tile_cols; - const int tile_rows = 1 << cm->log2_tile_rows; - const int num_workers = VPXMIN(pbi->max_threads, tile_cols); - int n; - - assert(tile_cols <= (1 << 6)); - assert(tile_rows == 1); - (void)tile_rows; - - if (pbi->num_tile_workers == 0) { - const int num_threads = pbi->max_threads; - CHECK_MEM_ERROR(cm, 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)) { - vpx_internal_error(&cm->error, VPX_CODEC_ERROR, - "Tile decoder thread creation failed"); - } - } - } - - // 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); - tile_data->xd = pbi->mb; - tile_data->xd.counts = - cm->frame_parallel_decoding_mode ? NULL : &tile_data->counts; - worker->hook = (VPxWorkerHook)tile_worker_hook; - worker->data1 = tile_data; - worker->data2 = pbi; - } - - // 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); - - // 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 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)]; - lock_buffer_pool(pool); - if (frame_to_show < 0 || frame_bufs[frame_to_show].ref_count < 1) { - unlock_buffer_pool(pool); - vpx_internal_error(&cm->error, VPX_CODEC_UNSUP_BITSTREAM, - "Buffer %d does not contain a decoded frame", - frame_to_show); - } - - ref_cnt_fb(frame_bufs, &cm->new_fb_idx, frame_to_show); - unlock_buffer_pool(pool); - pbi->refresh_frame_flags = 0; - cm->lf.filter_level = 0; - cm->show_frame = 1; - - if (pbi->frame_parallel_decode) { - for (i = 0; i < REF_FRAMES; ++i) - cm->next_ref_frame_map[i] = cm->ref_frame_map[i]; - } - return 0; - } - - cm->frame_type = (FRAME_TYPE) 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)); - 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. - lock_buffer_pool(pool); - for (mask = pbi->refresh_frame_flags; mask; mask >>= 1) { - if (mask & 1) { - cm->next_ref_frame_map[ref_index] = cm->new_fb_idx; - ++frame_bufs[cm->new_fb_idx].ref_count; - } else { - cm->next_ref_frame_map[ref_index] = cm->ref_frame_map[ref_index]; - } - // Current thread holds the reference frame. - if (cm->ref_frame_map[ref_index] >= 0) - ++frame_bufs[cm->ref_frame_map[ref_index]].ref_count; - ++ref_index; - } - - for (; ref_index < REF_FRAMES; ++ref_index) { - cm->next_ref_frame_map[ref_index] = cm->ref_frame_map[ref_index]; - // Current thread holds the reference frame. - if (cm->ref_frame_map[ref_index] >= 0) - ++frame_bufs[cm->ref_frame_map[ref_index]].ref_count; - } - unlock_buffer_pool(pool); - pbi->hold_ref_buf = 1; - - if (frame_is_intra_only(cm) || cm->error_resilient_mode) - vp9_setup_past_independence(cm); - - setup_loopfilter(&cm->lf, rb); - setup_quantization(cm, &pbi->mb, rb); - setup_segmentation(&cm->seg, rb); - setup_segmentation_dequant(cm); - - setup_tile_info(cm, rb); - sz = 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) - 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); - 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 encoded in frame parallel mode, frame context is ready after decoding - // the frame header. - if (pbi->frame_parallel_decode && cm->frame_parallel_decoding_mode) { - VPxWorker *const worker = pbi->frame_worker_owner; - FrameWorkerData *const frame_worker_data = worker->data1; - if (cm->refresh_frame_context) { - context_updated = 1; - cm->frame_contexts[cm->frame_context_idx] = *cm->fc; - } - vp9_frameworker_lock_stats(worker); - pbi->cur_buf->row = -1; - pbi->cur_buf->col = -1; - frame_worker_data->frame_context_ready = 1; - // Signal the main thread that context is ready. - vp9_frameworker_signal_stats(worker); - vp9_frameworker_unlock_stats(worker); - } - - if (pbi->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, 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) { - // Multi-threaded tile decoder - *p_data_end = decode_tiles_mt(pbi, data + first_partition_size, data_end); - if (!xd->corrupted) { - if (!cm->skip_loop_filter) { - // If multiple threads are used to decode tiles, then we use those - // threads to do parallel loopfiltering. - vp9_loop_filter_frame_mt(new_fb, cm, pbi->mb.plane, - cm->lf.filter_level, 0, 0, pbi->tile_workers, - pbi->num_tile_workers, &pbi->lf_row_sync); - } - } else { - vpx_internal_error(&cm->error, VPX_CODEC_CORRUPT_FRAME, - "Decode failed. Frame data is corrupted."); - } - } else { - *p_data_end = decode_tiles(pbi, data + first_partition_size, data_end); - } - - if (!xd->corrupted) { - if (!cm->error_resilient_mode && !cm->frame_parallel_decoding_mode) { - vp9_adapt_coef_probs(cm); - - if (!frame_is_intra_only(cm)) { - vp9_adapt_mode_probs(cm); - vp9_adapt_mv_probs(cm, cm->allow_high_precision_mv); - } - } - } else { - 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; -} |