da58436f43
Make framebuffer allocations according to the chroma subsamping factors in use. A bit is placed in the raw part of the frame header for each of the two subsampling factors. This will be moved in a future commit to make them part of the TBD feature set bits, probably only set on keyframes, etc. Change-Id: I59ed38d3a3c0d4af3c7c277617de28d04a001853
1126 lines
37 KiB
C
1126 lines
37 KiB
C
/*
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* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include <assert.h>
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#include "vp9/decoder/vp9_onyxd_int.h"
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#include "vp9/common/vp9_common.h"
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#include "vp9/common/vp9_header.h"
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#include "vp9/common/vp9_reconintra.h"
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#include "vp9/common/vp9_reconinter.h"
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#include "vp9/common/vp9_entropy.h"
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#include "vp9/decoder/vp9_decodframe.h"
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#include "vp9/decoder/vp9_detokenize.h"
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#include "vp9/common/vp9_invtrans.h"
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#include "vp9/common/vp9_alloccommon.h"
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#include "vp9/common/vp9_entropymode.h"
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#include "vp9/common/vp9_quant_common.h"
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#include "vpx_scale/vpx_scale.h"
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#include "vp9/decoder/vp9_decodemv.h"
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#include "vp9/common/vp9_extend.h"
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#include "vp9/common/vp9_modecont.h"
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#include "vpx_mem/vpx_mem.h"
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#include "vp9/decoder/vp9_dboolhuff.h"
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#include "vp9/common/vp9_seg_common.h"
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#include "vp9/common/vp9_tile_common.h"
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#include "vp9_rtcd.h"
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// #define DEC_DEBUG
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#ifdef DEC_DEBUG
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int dec_debug = 0;
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#endif
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static int read_le16(const uint8_t *p) {
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return (p[1] << 8) | p[0];
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}
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static int read_le32(const uint8_t *p) {
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return (p[3] << 24) | (p[2] << 16) | (p[1] << 8) | p[0];
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}
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// len == 0 is not allowed
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static int read_is_valid(const uint8_t *start, size_t len,
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const uint8_t *end) {
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return start + len > start && start + len <= end;
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}
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static void setup_txfm_mode(VP9_COMMON *pc, int lossless, vp9_reader *r) {
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if (lossless) {
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pc->txfm_mode = ONLY_4X4;
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} else {
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pc->txfm_mode = vp9_read_literal(r, 2);
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if (pc->txfm_mode == ALLOW_32X32)
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pc->txfm_mode += vp9_read_bit(r);
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if (pc->txfm_mode == TX_MODE_SELECT) {
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pc->prob_tx[0] = vp9_read_prob(r);
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pc->prob_tx[1] = vp9_read_prob(r);
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pc->prob_tx[2] = vp9_read_prob(r);
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}
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}
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}
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static int get_unsigned_bits(unsigned int num_values) {
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int cat = 0;
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if (num_values <= 1)
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return 0;
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num_values--;
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while (num_values > 0) {
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cat++;
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num_values >>= 1;
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}
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return cat;
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}
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static int inv_recenter_nonneg(int v, int m) {
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if (v > 2 * m)
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return v;
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return v % 2 ? m - (v + 1) / 2 : m + v / 2;
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}
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static int decode_uniform(vp9_reader *r, int n) {
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int v;
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const int l = get_unsigned_bits(n);
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const int m = (1 << l) - n;
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if (!l)
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return 0;
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v = vp9_read_literal(r, l - 1);
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return v < m ? v : (v << 1) - m + vp9_read_bit(r);
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}
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static int decode_term_subexp(vp9_reader *r, int k, int num_syms) {
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int i = 0, mk = 0, word;
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while (1) {
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const int b = i ? k + i - 1 : k;
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const int a = 1 << b;
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if (num_syms <= mk + 3 * a) {
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word = decode_uniform(r, num_syms - mk) + mk;
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break;
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} else {
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if (vp9_read_bit(r)) {
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i++;
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mk += a;
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} else {
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word = vp9_read_literal(r, b) + mk;
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break;
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}
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}
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}
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return word;
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}
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static int decode_unsigned_max(vp9_reader *r, int max) {
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int data = 0, bit = 0, lmax = max;
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while (lmax) {
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data |= vp9_read_bit(r) << bit++;
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lmax >>= 1;
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}
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return data > max ? max : data;
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}
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static int merge_index(int v, int n, int modulus) {
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int max1 = (n - 1 - modulus / 2) / modulus + 1;
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if (v < max1) {
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v = v * modulus + modulus / 2;
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} else {
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int w;
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v -= max1;
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w = v;
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v += (v + modulus - modulus / 2) / modulus;
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while (v % modulus == modulus / 2 ||
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w != v - (v + modulus - modulus / 2) / modulus) v++;
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}
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return v;
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}
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static int inv_remap_prob(int v, int m) {
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const int n = 256;
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v = merge_index(v, n - 1, MODULUS_PARAM);
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if ((m << 1) <= n) {
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return inv_recenter_nonneg(v + 1, m);
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} else {
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return n - 1 - inv_recenter_nonneg(v + 1, n - 1 - m);
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}
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}
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static vp9_prob read_prob_diff_update(vp9_reader *r, int oldp) {
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int delp = decode_term_subexp(r, SUBEXP_PARAM, 255);
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return (vp9_prob)inv_remap_prob(delp, oldp);
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}
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void vp9_init_dequantizer(VP9_COMMON *pc) {
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int q;
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for (q = 0; q < QINDEX_RANGE; q++) {
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// DC value
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pc->y_dequant[q][0] = vp9_dc_quant(q, pc->y_dc_delta_q);
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pc->uv_dequant[q][0] = vp9_dc_quant(q, pc->uv_dc_delta_q);
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// AC values
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pc->y_dequant[q][1] = vp9_ac_quant(q, 0);
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pc->uv_dequant[q][1] = vp9_ac_quant(q, pc->uv_ac_delta_q);
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}
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}
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static void mb_init_dequantizer(VP9_COMMON *pc, MACROBLOCKD *xd) {
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int i;
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const int segment_id = xd->mode_info_context->mbmi.segment_id;
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xd->q_index = vp9_get_qindex(xd, segment_id, pc->base_qindex);
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xd->plane[0].dequant = pc->y_dequant[xd->q_index];
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for (i = 1; i < MAX_MB_PLANE; i++)
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xd->plane[i].dequant = pc->uv_dequant[xd->q_index];
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}
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static INLINE void dequant_add_y(MACROBLOCKD *xd, TX_TYPE tx_type, int idx,
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BLOCK_SIZE_TYPE bsize) {
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struct macroblockd_plane *const y = &xd->plane[0];
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uint8_t* const dst = raster_block_offset_uint8(xd, bsize, 0, idx,
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xd->plane[0].dst.buf,
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xd->plane[0].dst.stride);
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if (tx_type != DCT_DCT) {
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vp9_iht_add_c(tx_type, BLOCK_OFFSET(y->qcoeff, idx, 16),
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dst, xd->plane[0].dst.stride, y->eobs[idx]);
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} else {
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xd->itxm_add(BLOCK_OFFSET(y->qcoeff, idx, 16),
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dst, xd->plane[0].dst.stride, y->eobs[idx]);
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}
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}
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static void decode_block(int plane, int block, BLOCK_SIZE_TYPE bsize,
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int ss_txfrm_size, void *arg) {
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MACROBLOCKD* const xd = arg;
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int16_t* const qcoeff = BLOCK_OFFSET(xd->plane[plane].qcoeff, block, 16);
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const int stride = xd->plane[plane].dst.stride;
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const int raster_block = txfrm_block_to_raster_block(xd, bsize, plane,
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block, ss_txfrm_size);
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uint8_t* const dst = raster_block_offset_uint8(xd, bsize, plane,
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raster_block,
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xd->plane[plane].dst.buf,
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stride);
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TX_TYPE tx_type;
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switch (ss_txfrm_size / 2) {
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case TX_4X4:
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tx_type = plane == 0 ? get_tx_type_4x4(xd, raster_block) : DCT_DCT;
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if (tx_type == DCT_DCT)
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xd->itxm_add(qcoeff, dst, stride, xd->plane[plane].eobs[block]);
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else
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vp9_iht_add_c(tx_type, qcoeff, dst, stride,
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xd->plane[plane].eobs[block]);
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break;
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case TX_8X8:
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tx_type = plane == 0 ? get_tx_type_8x8(xd, raster_block) : DCT_DCT;
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vp9_iht_add_8x8_c(tx_type, qcoeff, dst, stride,
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xd->plane[plane].eobs[block]);
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break;
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case TX_16X16:
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tx_type = plane == 0 ? get_tx_type_16x16(xd, raster_block) : DCT_DCT;
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vp9_iht_add_16x16_c(tx_type, qcoeff, dst, stride,
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xd->plane[plane].eobs[block]);
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break;
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case TX_32X32:
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vp9_idct_add_32x32(qcoeff, dst, stride, xd->plane[plane].eobs[block]);
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break;
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}
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}
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static void decode_atom_intra(VP9D_COMP *pbi, MACROBLOCKD *xd,
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vp9_reader *r,
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BLOCK_SIZE_TYPE bsize) {
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int i = 0;
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int bwl = b_width_log2(bsize), bhl = b_height_log2(bsize);
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int bc = 1 << (bwl + bhl);
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int tx_type;
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for (i = 0; i < bc; i++) {
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int b_mode = xd->mode_info_context->bmi[i].as_mode.first;
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uint8_t* dst = raster_block_offset_uint8(xd, bsize, 0, i,
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xd->plane[0].dst.buf,
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xd->plane[0].dst.stride);
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vp9_intra4x4_predict(xd, i, bsize, b_mode, dst, xd->plane[0].dst.stride);
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// TODO(jingning): refactor to use foreach_transformed_block_in_plane_
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tx_type = get_tx_type_4x4(xd, i);
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dequant_add_y(xd, tx_type, i, bsize);
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}
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foreach_transformed_block_uv(xd, bsize, decode_block, xd);
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}
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static void decode_atom(VP9D_COMP *pbi, MACROBLOCKD *xd,
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int mi_row, int mi_col,
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vp9_reader *r, BLOCK_SIZE_TYPE bsize) {
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MB_MODE_INFO *const mbmi = &xd->mode_info_context->mbmi;
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if (pbi->common.frame_type != KEY_FRAME)
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vp9_setup_interp_filters(xd, mbmi->interp_filter, &pbi->common);
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// prediction
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if (mbmi->ref_frame == INTRA_FRAME)
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vp9_build_intra_predictors_sbuv_s(xd, bsize);
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else
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vp9_build_inter_predictors_sb(xd, mi_row, mi_col, bsize);
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if (mbmi->mb_skip_coeff) {
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vp9_reset_sb_tokens_context(xd, bsize);
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} else {
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// re-initialize macroblock dequantizer before detokenization
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if (xd->segmentation_enabled)
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mb_init_dequantizer(&pbi->common, xd);
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if (!vp9_reader_has_error(r)) {
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vp9_decode_tokens(pbi, xd, r, bsize);
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}
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}
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if (mbmi->ref_frame == INTRA_FRAME)
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decode_atom_intra(pbi, xd, r, bsize);
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else
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foreach_transformed_block(xd, bsize, decode_block, xd);
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}
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static void decode_sb(VP9D_COMP *pbi, MACROBLOCKD *xd, int mi_row, int mi_col,
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vp9_reader *r, BLOCK_SIZE_TYPE bsize) {
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const int bwl = mi_width_log2(bsize), bhl = mi_height_log2(bsize);
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const int bw = 1 << bwl, bh = 1 << bhl;
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int n, eobtotal;
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VP9_COMMON *const pc = &pbi->common;
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MODE_INFO *const mi = xd->mode_info_context;
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MB_MODE_INFO *const mbmi = &mi->mbmi;
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const int mis = pc->mode_info_stride;
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assert(mbmi->sb_type == bsize);
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if (pbi->common.frame_type != KEY_FRAME)
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vp9_setup_interp_filters(xd, mbmi->interp_filter, pc);
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// generate prediction
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if (mbmi->ref_frame == INTRA_FRAME) {
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vp9_build_intra_predictors_sby_s(xd, bsize);
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vp9_build_intra_predictors_sbuv_s(xd, bsize);
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} else {
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vp9_build_inter_predictors_sb(xd, mi_row, mi_col, bsize);
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}
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if (mbmi->mb_skip_coeff) {
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vp9_reset_sb_tokens_context(xd, bsize);
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} else {
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// re-initialize macroblock dequantizer before detokenization
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if (xd->segmentation_enabled)
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mb_init_dequantizer(pc, xd);
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// dequantization and idct
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eobtotal = vp9_decode_tokens(pbi, xd, r, bsize);
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if (eobtotal == 0) { // skip loopfilter
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for (n = 0; n < bw * bh; n++) {
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const int x_idx = n & (bw - 1), y_idx = n >> bwl;
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if (mi_col + x_idx < pc->mi_cols && mi_row + y_idx < pc->mi_rows)
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mi[y_idx * mis + x_idx].mbmi.mb_skip_coeff = 1;
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}
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} else {
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foreach_transformed_block(xd, bsize, decode_block, xd);
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}
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}
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}
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static int get_delta_q(vp9_reader *r, int *dq) {
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const int old_value = *dq;
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if (vp9_read_bit(r)) { // Update bit
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const int value = vp9_read_literal(r, 4);
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*dq = vp9_read_and_apply_sign(r, value);
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}
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// Trigger a quantizer update if the delta-q value has changed
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return old_value != *dq;
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}
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static void set_offsets(VP9D_COMP *pbi, BLOCK_SIZE_TYPE bsize,
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int mi_row, int mi_col) {
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const int bh = 1 << mi_height_log2(bsize);
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const int bw = 1 << mi_width_log2(bsize);
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VP9_COMMON *const cm = &pbi->common;
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MACROBLOCKD *const xd = &pbi->mb;
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const int mi_idx = mi_row * cm->mode_info_stride + mi_col;
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int i;
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xd->mode_info_context = cm->mi + mi_idx;
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xd->mode_info_context->mbmi.sb_type = bsize;
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xd->prev_mode_info_context = cm->prev_mi + mi_idx;
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for (i = 0; i < MAX_MB_PLANE; i++) {
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xd->plane[i].above_context = cm->above_context[i] +
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(mi_col * 2 >> xd->plane[i].subsampling_x);
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xd->plane[i].left_context = cm->left_context[i] +
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(((mi_row * 2) & 15) >> xd->plane[i].subsampling_y);
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}
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xd->above_seg_context = cm->above_seg_context + mi_col;
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xd->left_seg_context = cm->left_seg_context + (mi_row & MI_MASK);
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// Distance of Mb to the various image edges. These are specified to 8th pel
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// as they are always compared to values that are in 1/8th pel units
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set_mi_row_col(cm, xd, mi_row, bh, mi_col, bw);
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setup_dst_planes(xd, &cm->yv12_fb[cm->new_fb_idx], mi_row, mi_col);
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}
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static void set_refs(VP9D_COMP *pbi, int mi_row, int mi_col) {
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VP9_COMMON *const cm = &pbi->common;
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MACROBLOCKD *const xd = &pbi->mb;
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MB_MODE_INFO *const mbmi = &xd->mode_info_context->mbmi;
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if (mbmi->ref_frame > INTRA_FRAME) {
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// Select the appropriate reference frame for this MB
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const int fb_idx = cm->active_ref_idx[mbmi->ref_frame - 1];
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const YV12_BUFFER_CONFIG *cfg = &cm->yv12_fb[fb_idx];
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xd->scale_factor[0] = cm->active_ref_scale[mbmi->ref_frame - 1];
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xd->scale_factor_uv[0] = cm->active_ref_scale[mbmi->ref_frame - 1];
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setup_pre_planes(xd, cfg, NULL, mi_row, mi_col,
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xd->scale_factor, xd->scale_factor_uv);
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xd->corrupted |= cfg->corrupted;
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if (mbmi->second_ref_frame > INTRA_FRAME) {
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// Select the appropriate reference frame for this MB
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const int second_fb_idx = cm->active_ref_idx[mbmi->second_ref_frame - 1];
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const YV12_BUFFER_CONFIG *second_cfg = &cm->yv12_fb[second_fb_idx];
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xd->scale_factor[1] = cm->active_ref_scale[mbmi->second_ref_frame - 1];
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xd->scale_factor_uv[1] = cm->active_ref_scale[mbmi->second_ref_frame - 1];
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setup_pre_planes(xd, NULL, second_cfg, mi_row, mi_col,
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xd->scale_factor, xd->scale_factor_uv);
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xd->corrupted |= second_cfg->corrupted;
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}
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}
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}
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static void decode_modes_b(VP9D_COMP *pbi, int mi_row, int mi_col,
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vp9_reader *r, BLOCK_SIZE_TYPE bsize) {
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MACROBLOCKD *const xd = &pbi->mb;
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set_offsets(pbi, bsize, mi_row, mi_col);
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vp9_decode_mb_mode_mv(pbi, xd, mi_row, mi_col, r);
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set_refs(pbi, mi_row, mi_col);
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if (bsize == BLOCK_SIZE_SB8X8 &&
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(xd->mode_info_context->mbmi.mode == SPLITMV ||
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xd->mode_info_context->mbmi.mode == I4X4_PRED))
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decode_atom(pbi, xd, mi_row, mi_col, r, bsize);
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else
|
|
decode_sb(pbi, xd, mi_row, mi_col, r, bsize);
|
|
|
|
xd->corrupted |= vp9_reader_has_error(r);
|
|
}
|
|
|
|
static void decode_modes_sb(VP9D_COMP *pbi, int mi_row, int mi_col,
|
|
vp9_reader* r, BLOCK_SIZE_TYPE bsize) {
|
|
VP9_COMMON *const pc = &pbi->common;
|
|
MACROBLOCKD *const xd = &pbi->mb;
|
|
int bsl = mi_width_log2(bsize), bs = (1 << bsl) / 2;
|
|
int n;
|
|
PARTITION_TYPE partition = PARTITION_NONE;
|
|
BLOCK_SIZE_TYPE subsize;
|
|
|
|
if (mi_row >= pc->mi_rows || mi_col >= pc->mi_cols)
|
|
return;
|
|
|
|
if (bsize > BLOCK_SIZE_SB8X8) {
|
|
int pl;
|
|
// read the partition information
|
|
xd->left_seg_context = pc->left_seg_context + (mi_row & MI_MASK);
|
|
xd->above_seg_context = pc->above_seg_context + mi_col;
|
|
pl = partition_plane_context(xd, bsize);
|
|
partition = treed_read(r, vp9_partition_tree,
|
|
pc->fc.partition_prob[pl]);
|
|
pc->fc.partition_counts[pl][partition]++;
|
|
}
|
|
|
|
subsize = get_subsize(bsize, partition);
|
|
switch (partition) {
|
|
case PARTITION_NONE:
|
|
decode_modes_b(pbi, mi_row, mi_col, r, subsize);
|
|
break;
|
|
case PARTITION_HORZ:
|
|
decode_modes_b(pbi, mi_row, mi_col, r, subsize);
|
|
if (mi_row + bs < pc->mi_rows)
|
|
decode_modes_b(pbi, mi_row + bs, mi_col, r, subsize);
|
|
break;
|
|
case PARTITION_VERT:
|
|
decode_modes_b(pbi, mi_row, mi_col, r, subsize);
|
|
if (mi_col + bs < pc->mi_cols)
|
|
decode_modes_b(pbi, mi_row, mi_col + bs, r, subsize);
|
|
break;
|
|
case PARTITION_SPLIT:
|
|
for (n = 0; n < 4; n++) {
|
|
int j = n >> 1, i = n & 0x01;
|
|
if (subsize == BLOCK_SIZE_SB32X32)
|
|
xd->sb_index = n;
|
|
else if (subsize == BLOCK_SIZE_MB16X16)
|
|
xd->mb_index = n;
|
|
else
|
|
xd->b_index = n;
|
|
decode_modes_sb(pbi, mi_row + j * bs, mi_col + i * bs, r, subsize);
|
|
}
|
|
break;
|
|
default:
|
|
assert(0);
|
|
}
|
|
// update partition context
|
|
if ((partition == PARTITION_SPLIT) && (bsize > BLOCK_SIZE_MB16X16))
|
|
return;
|
|
|
|
xd->left_seg_context = pc->left_seg_context + (mi_row & MI_MASK);
|
|
xd->above_seg_context = pc->above_seg_context + mi_col;
|
|
update_partition_context(xd, subsize, bsize);
|
|
}
|
|
|
|
static void setup_token_decoder(VP9D_COMP *pbi,
|
|
const uint8_t *data,
|
|
vp9_reader *r) {
|
|
VP9_COMMON *pc = &pbi->common;
|
|
const uint8_t *data_end = pbi->source + pbi->source_sz;
|
|
const size_t partition_size = data_end - data;
|
|
|
|
// 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, partition_size, data_end))
|
|
vpx_internal_error(&pc->error, VPX_CODEC_CORRUPT_FRAME,
|
|
"Truncated packet or corrupt partition "
|
|
"%d length", 1);
|
|
|
|
if (vp9_reader_init(r, data, partition_size))
|
|
vpx_internal_error(&pc->error, VPX_CODEC_MEM_ERROR,
|
|
"Failed to allocate bool decoder %d", 1);
|
|
}
|
|
|
|
static void init_frame(VP9D_COMP *pbi) {
|
|
VP9_COMMON *const pc = &pbi->common;
|
|
MACROBLOCKD *const xd = &pbi->mb;
|
|
|
|
if (pc->frame_type == KEY_FRAME) {
|
|
vp9_setup_past_independence(pc, xd);
|
|
// All buffers are implicitly updated on key frames.
|
|
pbi->refresh_frame_flags = (1 << NUM_REF_FRAMES) - 1;
|
|
} else if (pc->error_resilient_mode) {
|
|
vp9_setup_past_independence(pc, xd);
|
|
}
|
|
|
|
xd->mode_info_context = pc->mi;
|
|
xd->prev_mode_info_context = pc->prev_mi;
|
|
xd->frame_type = pc->frame_type;
|
|
xd->mode_info_context->mbmi.mode = DC_PRED;
|
|
xd->mode_info_stride = pc->mode_info_stride;
|
|
}
|
|
|
|
static void read_coef_probs_common(vp9_coeff_probs *coef_probs,
|
|
TX_SIZE tx_size,
|
|
vp9_reader *r) {
|
|
#if CONFIG_MODELCOEFPROB && MODEL_BASED_UPDATE
|
|
const int entropy_nodes_update = UNCONSTRAINED_UPDATE_NODES;
|
|
#else
|
|
const int entropy_nodes_update = ENTROPY_NODES;
|
|
#endif
|
|
|
|
int i, j, k, l, m;
|
|
|
|
if (vp9_read_bit(r)) {
|
|
for (i = 0; i < BLOCK_TYPES; i++) {
|
|
for (j = 0; j < REF_TYPES; j++) {
|
|
for (k = 0; k < COEF_BANDS; k++) {
|
|
for (l = 0; l < PREV_COEF_CONTEXTS; l++) {
|
|
const int mstart = 0;
|
|
if (l >= 3 && k == 0)
|
|
continue;
|
|
|
|
for (m = mstart; m < entropy_nodes_update; m++) {
|
|
vp9_prob *const p = coef_probs[i][j][k][l] + m;
|
|
|
|
if (vp9_read(r, vp9_coef_update_prob[m])) {
|
|
*p = read_prob_diff_update(r, *p);
|
|
#if CONFIG_MODELCOEFPROB && MODEL_BASED_UPDATE
|
|
if (m == UNCONSTRAINED_NODES - 1)
|
|
vp9_get_model_distribution(*p, coef_probs[i][j][k][l], i, j);
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void read_coef_probs(VP9D_COMP *pbi, vp9_reader *r) {
|
|
const TXFM_MODE mode = pbi->common.txfm_mode;
|
|
FRAME_CONTEXT *const fc = &pbi->common.fc;
|
|
|
|
read_coef_probs_common(fc->coef_probs_4x4, TX_4X4, r);
|
|
|
|
if (mode > ONLY_4X4)
|
|
read_coef_probs_common(fc->coef_probs_8x8, TX_8X8, r);
|
|
|
|
if (mode > ALLOW_8X8)
|
|
read_coef_probs_common(fc->coef_probs_16x16, TX_16X16, r);
|
|
|
|
if (mode > ALLOW_16X16)
|
|
read_coef_probs_common(fc->coef_probs_32x32, TX_32X32, r);
|
|
}
|
|
|
|
static void setup_segmentation(VP9_COMMON *pc, MACROBLOCKD *xd, vp9_reader *r) {
|
|
int i, j;
|
|
|
|
xd->update_mb_segmentation_map = 0;
|
|
xd->update_mb_segmentation_data = 0;
|
|
#if CONFIG_IMPLICIT_SEGMENTATION
|
|
xd->allow_implicit_segment_update = 0;
|
|
#endif
|
|
|
|
xd->segmentation_enabled = vp9_read_bit(r);
|
|
if (!xd->segmentation_enabled)
|
|
return;
|
|
|
|
// Segmentation map update
|
|
xd->update_mb_segmentation_map = vp9_read_bit(r);
|
|
#if CONFIG_IMPLICIT_SEGMENTATION
|
|
xd->allow_implicit_segment_update = vp9_read_bit(r);
|
|
#endif
|
|
if (xd->update_mb_segmentation_map) {
|
|
for (i = 0; i < MB_SEG_TREE_PROBS; i++)
|
|
xd->mb_segment_tree_probs[i] = vp9_read_bit(r) ? vp9_read_prob(r)
|
|
: MAX_PROB;
|
|
|
|
pc->temporal_update = vp9_read_bit(r);
|
|
if (pc->temporal_update) {
|
|
for (i = 0; i < PREDICTION_PROBS; i++)
|
|
pc->segment_pred_probs[i] = vp9_read_bit(r) ? vp9_read_prob(r)
|
|
: MAX_PROB;
|
|
} else {
|
|
for (i = 0; i < PREDICTION_PROBS; i++)
|
|
pc->segment_pred_probs[i] = MAX_PROB;
|
|
}
|
|
}
|
|
|
|
// Segmentation data update
|
|
xd->update_mb_segmentation_data = vp9_read_bit(r);
|
|
if (xd->update_mb_segmentation_data) {
|
|
xd->mb_segment_abs_delta = vp9_read_bit(r);
|
|
|
|
vp9_clearall_segfeatures(xd);
|
|
|
|
for (i = 0; i < MAX_MB_SEGMENTS; i++) {
|
|
for (j = 0; j < SEG_LVL_MAX; j++) {
|
|
int data = 0;
|
|
const int feature_enabled = vp9_read_bit(r);
|
|
if (feature_enabled) {
|
|
vp9_enable_segfeature(xd, i, j);
|
|
data = decode_unsigned_max(r, vp9_seg_feature_data_max(j));
|
|
if (vp9_is_segfeature_signed(j))
|
|
data = vp9_read_and_apply_sign(r, data);
|
|
}
|
|
vp9_set_segdata(xd, i, j, data);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void setup_pred_probs(VP9_COMMON *pc, vp9_reader *r) {
|
|
// Read common prediction model status flag probability updates for the
|
|
// reference frame
|
|
if (pc->frame_type == KEY_FRAME) {
|
|
// Set the prediction probabilities to defaults
|
|
pc->ref_pred_probs[0] = DEFAULT_PRED_PROB_0;
|
|
pc->ref_pred_probs[1] = DEFAULT_PRED_PROB_1;
|
|
pc->ref_pred_probs[2] = DEFAULT_PRED_PROB_2;
|
|
} else {
|
|
int i;
|
|
for (i = 0; i < PREDICTION_PROBS; ++i)
|
|
if (vp9_read_bit(r))
|
|
pc->ref_pred_probs[i] = vp9_read_prob(r);
|
|
}
|
|
}
|
|
|
|
static void setup_loopfilter(VP9_COMMON *pc, MACROBLOCKD *xd, vp9_reader *r) {
|
|
pc->filter_level = vp9_read_literal(r, 6);
|
|
pc->sharpness_level = vp9_read_literal(r, 3);
|
|
|
|
#if CONFIG_LOOP_DERING
|
|
if (vp9_read_bit(r))
|
|
pc->dering_enabled = 1 + vp9_read_literal(r, 4);
|
|
else
|
|
pc->dering_enabled = 0;
|
|
#endif
|
|
|
|
// Read in loop filter deltas applied at the MB level based on mode or ref
|
|
// frame.
|
|
xd->mode_ref_lf_delta_update = 0;
|
|
|
|
xd->mode_ref_lf_delta_enabled = vp9_read_bit(r);
|
|
if (xd->mode_ref_lf_delta_enabled) {
|
|
xd->mode_ref_lf_delta_update = vp9_read_bit(r);
|
|
if (xd->mode_ref_lf_delta_update) {
|
|
int i;
|
|
|
|
for (i = 0; i < MAX_REF_LF_DELTAS; i++) {
|
|
if (vp9_read_bit(r)) {
|
|
const int value = vp9_read_literal(r, 6);
|
|
xd->ref_lf_deltas[i] = vp9_read_and_apply_sign(r, value);
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < MAX_MODE_LF_DELTAS; i++) {
|
|
if (vp9_read_bit(r)) {
|
|
const int value = vp9_read_literal(r, 6);
|
|
xd->mode_lf_deltas[i] = vp9_read_and_apply_sign(r, value);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void setup_quantization(VP9D_COMP *pbi, vp9_reader *r) {
|
|
// Read the default quantizers
|
|
VP9_COMMON *const pc = &pbi->common;
|
|
|
|
pc->base_qindex = vp9_read_literal(r, QINDEX_BITS);
|
|
if (get_delta_q(r, &pc->y_dc_delta_q) |
|
|
get_delta_q(r, &pc->uv_dc_delta_q) |
|
|
get_delta_q(r, &pc->uv_ac_delta_q))
|
|
vp9_init_dequantizer(pc);
|
|
|
|
mb_init_dequantizer(pc, &pbi->mb); // MB level dequantizer setup
|
|
}
|
|
|
|
static INTERPOLATIONFILTERTYPE read_mcomp_filter_type(vp9_reader *r) {
|
|
return vp9_read_bit(r) ? SWITCHABLE
|
|
: vp9_read_literal(r, 2);
|
|
}
|
|
|
|
static const uint8_t *read_frame_size(VP9_COMMON *const pc, const uint8_t *data,
|
|
const uint8_t *data_end,
|
|
int *width, int *height) {
|
|
if (data + 4 < data_end) {
|
|
const int w = read_le16(data);
|
|
const int h = read_le16(data + 2);
|
|
if (w <= 0)
|
|
vpx_internal_error(&pc->error, VPX_CODEC_CORRUPT_FRAME,
|
|
"Invalid frame width");
|
|
|
|
if (h <= 0)
|
|
vpx_internal_error(&pc->error, VPX_CODEC_CORRUPT_FRAME,
|
|
"Invalid frame height");
|
|
*width = w;
|
|
*height = h;
|
|
data += 4;
|
|
} else {
|
|
vpx_internal_error(&pc->error, VPX_CODEC_CORRUPT_FRAME,
|
|
"Failed to read frame size");
|
|
}
|
|
return data;
|
|
}
|
|
|
|
static const uint8_t *setup_frame_size(VP9D_COMP *pbi, int scaling_active,
|
|
const uint8_t *data,
|
|
const uint8_t *data_end) {
|
|
// If error concealment is enabled we should only parse the new size
|
|
// if we have enough data. Otherwise we will end up with the wrong size.
|
|
VP9_COMMON *const pc = &pbi->common;
|
|
int display_width = pc->display_width;
|
|
int display_height = pc->display_height;
|
|
int width = pc->width;
|
|
int height = pc->height;
|
|
|
|
if (scaling_active)
|
|
data = read_frame_size(pc, data, data_end, &display_width, &display_height);
|
|
|
|
data = read_frame_size(pc, data, data_end, &width, &height);
|
|
|
|
if (pc->width != width || pc->height != height) {
|
|
if (!pbi->initial_width || !pbi->initial_height) {
|
|
if (vp9_alloc_frame_buffers(pc, width, height))
|
|
vpx_internal_error(&pc->error, VPX_CODEC_MEM_ERROR,
|
|
"Failed to allocate frame buffers");
|
|
pbi->initial_width = width;
|
|
pbi->initial_height = height;
|
|
} else {
|
|
if (width > pbi->initial_width)
|
|
vpx_internal_error(&pc->error, VPX_CODEC_CORRUPT_FRAME,
|
|
"Frame width too large");
|
|
|
|
if (height > pbi->initial_height)
|
|
vpx_internal_error(&pc->error, VPX_CODEC_CORRUPT_FRAME,
|
|
"Frame height too large");
|
|
}
|
|
|
|
pc->width = width;
|
|
pc->height = height;
|
|
pc->display_width = scaling_active ? display_width : width;
|
|
pc->display_height = scaling_active ? display_height : height;
|
|
|
|
vp9_update_frame_size(pc);
|
|
}
|
|
|
|
return data;
|
|
}
|
|
|
|
static void update_frame_context(FRAME_CONTEXT *fc) {
|
|
vp9_copy(fc->pre_coef_probs_4x4, fc->coef_probs_4x4);
|
|
vp9_copy(fc->pre_coef_probs_8x8, fc->coef_probs_8x8);
|
|
vp9_copy(fc->pre_coef_probs_16x16, fc->coef_probs_16x16);
|
|
vp9_copy(fc->pre_coef_probs_32x32, fc->coef_probs_32x32);
|
|
vp9_copy(fc->pre_ymode_prob, fc->ymode_prob);
|
|
vp9_copy(fc->pre_sb_ymode_prob, fc->sb_ymode_prob);
|
|
vp9_copy(fc->pre_uv_mode_prob, fc->uv_mode_prob);
|
|
vp9_copy(fc->pre_bmode_prob, fc->bmode_prob);
|
|
vp9_copy(fc->pre_sub_mv_ref_prob, fc->sub_mv_ref_prob);
|
|
vp9_copy(fc->pre_partition_prob, fc->partition_prob);
|
|
fc->pre_nmvc = fc->nmvc;
|
|
|
|
vp9_zero(fc->coef_counts_4x4);
|
|
vp9_zero(fc->coef_counts_8x8);
|
|
vp9_zero(fc->coef_counts_16x16);
|
|
vp9_zero(fc->coef_counts_32x32);
|
|
vp9_zero(fc->eob_branch_counts);
|
|
vp9_zero(fc->ymode_counts);
|
|
vp9_zero(fc->sb_ymode_counts);
|
|
vp9_zero(fc->uv_mode_counts);
|
|
vp9_zero(fc->bmode_counts);
|
|
vp9_zero(fc->sub_mv_ref_counts);
|
|
vp9_zero(fc->NMVcount);
|
|
vp9_zero(fc->mv_ref_ct);
|
|
vp9_zero(fc->partition_counts);
|
|
}
|
|
|
|
static void decode_tile(VP9D_COMP *pbi, vp9_reader *r) {
|
|
VP9_COMMON *const pc = &pbi->common;
|
|
int mi_row, mi_col;
|
|
|
|
for (mi_row = pc->cur_tile_mi_row_start;
|
|
mi_row < pc->cur_tile_mi_row_end; mi_row += 8) {
|
|
// For a SB there are 2 left contexts, each pertaining to a MB row within
|
|
vpx_memset(&pc->left_context, 0, sizeof(pc->left_context));
|
|
vpx_memset(pc->left_seg_context, 0, sizeof(pc->left_seg_context));
|
|
for (mi_col = pc->cur_tile_mi_col_start;
|
|
mi_col < pc->cur_tile_mi_col_end; mi_col += 8)
|
|
decode_modes_sb(pbi, mi_row, mi_col, r, BLOCK_SIZE_SB64X64);
|
|
}
|
|
}
|
|
|
|
static void decode_tiles(VP9D_COMP *pbi,
|
|
const uint8_t *data, int first_partition_size,
|
|
vp9_reader *header_bc, vp9_reader *residual_bc) {
|
|
VP9_COMMON *const pc = &pbi->common;
|
|
|
|
const uint8_t *data_ptr = data + first_partition_size;
|
|
int tile_row, tile_col, delta_log2_tiles;
|
|
|
|
vp9_get_tile_n_bits(pc, &pc->log2_tile_columns, &delta_log2_tiles);
|
|
while (delta_log2_tiles--) {
|
|
if (vp9_read_bit(header_bc)) {
|
|
pc->log2_tile_columns++;
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
pc->log2_tile_rows = vp9_read_bit(header_bc);
|
|
if (pc->log2_tile_rows)
|
|
pc->log2_tile_rows += vp9_read_bit(header_bc);
|
|
pc->tile_columns = 1 << pc->log2_tile_columns;
|
|
pc->tile_rows = 1 << pc->log2_tile_rows;
|
|
|
|
// Note: this memset assumes above_context[0], [1] and [2]
|
|
// are allocated as part of the same buffer.
|
|
vpx_memset(pc->above_context[0], 0, sizeof(ENTROPY_CONTEXT) * 2 *
|
|
MAX_MB_PLANE * mi_cols_aligned_to_sb(pc));
|
|
|
|
vpx_memset(pc->above_seg_context, 0, sizeof(PARTITION_CONTEXT) *
|
|
mi_cols_aligned_to_sb(pc));
|
|
|
|
if (pbi->oxcf.inv_tile_order) {
|
|
const int n_cols = pc->tile_columns;
|
|
const uint8_t *data_ptr2[4][1 << 6];
|
|
vp9_reader bc_bak = {0};
|
|
|
|
// pre-initialize the offsets, we're going to read in inverse order
|
|
data_ptr2[0][0] = data_ptr;
|
|
for (tile_row = 0; tile_row < pc->tile_rows; tile_row++) {
|
|
if (tile_row) {
|
|
const int size = read_le32(data_ptr2[tile_row - 1][n_cols - 1]);
|
|
data_ptr2[tile_row - 1][n_cols - 1] += 4;
|
|
data_ptr2[tile_row][0] = data_ptr2[tile_row - 1][n_cols - 1] + size;
|
|
}
|
|
|
|
for (tile_col = 1; tile_col < n_cols; tile_col++) {
|
|
const int size = read_le32(data_ptr2[tile_row][tile_col - 1]);
|
|
data_ptr2[tile_row][tile_col - 1] += 4;
|
|
data_ptr2[tile_row][tile_col] =
|
|
data_ptr2[tile_row][tile_col - 1] + size;
|
|
}
|
|
}
|
|
|
|
for (tile_row = 0; tile_row < pc->tile_rows; tile_row++) {
|
|
vp9_get_tile_row_offsets(pc, tile_row);
|
|
for (tile_col = n_cols - 1; tile_col >= 0; tile_col--) {
|
|
vp9_get_tile_col_offsets(pc, tile_col);
|
|
setup_token_decoder(pbi, data_ptr2[tile_row][tile_col], residual_bc);
|
|
decode_tile(pbi, residual_bc);
|
|
if (tile_row == pc->tile_rows - 1 && tile_col == n_cols - 1)
|
|
bc_bak = *residual_bc;
|
|
}
|
|
}
|
|
*residual_bc = bc_bak;
|
|
} else {
|
|
int has_more;
|
|
|
|
for (tile_row = 0; tile_row < pc->tile_rows; tile_row++) {
|
|
vp9_get_tile_row_offsets(pc, tile_row);
|
|
for (tile_col = 0; tile_col < pc->tile_columns; tile_col++) {
|
|
vp9_get_tile_col_offsets(pc, tile_col);
|
|
|
|
has_more = tile_col < pc->tile_columns - 1 ||
|
|
tile_row < pc->tile_rows - 1;
|
|
|
|
setup_token_decoder(pbi, data_ptr + (has_more ? 4 : 0), residual_bc);
|
|
decode_tile(pbi, residual_bc);
|
|
|
|
if (has_more) {
|
|
const int size = read_le32(data_ptr);
|
|
data_ptr += 4 + size;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
int vp9_decode_frame(VP9D_COMP *pbi, const uint8_t **p_data_end) {
|
|
vp9_reader header_bc, residual_bc;
|
|
VP9_COMMON *const pc = &pbi->common;
|
|
MACROBLOCKD *const xd = &pbi->mb;
|
|
const uint8_t *data = pbi->source;
|
|
const uint8_t *data_end = data + pbi->source_sz;
|
|
size_t first_partition_size = 0;
|
|
YV12_BUFFER_CONFIG *new_fb = &pc->yv12_fb[pc->new_fb_idx];
|
|
int i;
|
|
|
|
xd->corrupted = 0; // start with no corruption of current frame
|
|
new_fb->corrupted = 0;
|
|
|
|
if (data_end - data < 3) {
|
|
vpx_internal_error(&pc->error, VPX_CODEC_CORRUPT_FRAME, "Truncated packet");
|
|
} else {
|
|
int scaling_active;
|
|
pc->last_frame_type = pc->frame_type;
|
|
pc->frame_type = (FRAME_TYPE)(data[0] & 1);
|
|
pc->version = (data[0] >> 1) & 7;
|
|
pc->show_frame = (data[0] >> 4) & 1;
|
|
scaling_active = (data[0] >> 5) & 1;
|
|
pc->subsampling_x = (data[0] >> 6) & 1;
|
|
pc->subsampling_y = (data[0] >> 7) & 1;
|
|
first_partition_size = read_le16(data + 1);
|
|
|
|
if (!read_is_valid(data, first_partition_size, data_end))
|
|
vpx_internal_error(&pc->error, VPX_CODEC_CORRUPT_FRAME,
|
|
"Truncated packet or corrupt partition 0 length");
|
|
|
|
data += 3;
|
|
|
|
vp9_setup_version(pc);
|
|
|
|
if (pc->frame_type == KEY_FRAME) {
|
|
// When error concealment is enabled we should only check the sync
|
|
// code if we have enough bits available
|
|
if (data + 3 < data_end) {
|
|
if (data[0] != 0x9d || data[1] != 0x01 || data[2] != 0x2a)
|
|
vpx_internal_error(&pc->error, VPX_CODEC_UNSUP_BITSTREAM,
|
|
"Invalid frame sync code");
|
|
}
|
|
data += 3;
|
|
}
|
|
|
|
data = setup_frame_size(pbi, scaling_active, data, data_end);
|
|
}
|
|
|
|
if ((!pbi->decoded_key_frame && pc->frame_type != KEY_FRAME) ||
|
|
pc->width == 0 || pc->height == 0) {
|
|
return -1;
|
|
}
|
|
|
|
init_frame(pbi);
|
|
|
|
// Reset the frame pointers to the current frame size
|
|
vp9_realloc_frame_buffer(new_fb, pc->width, pc->height,
|
|
pc->subsampling_x, pc->subsampling_y,
|
|
VP9BORDERINPIXELS);
|
|
|
|
if (vp9_reader_init(&header_bc, data, first_partition_size))
|
|
vpx_internal_error(&pc->error, VPX_CODEC_MEM_ERROR,
|
|
"Failed to allocate bool decoder 0");
|
|
|
|
pc->clr_type = (YUV_TYPE)vp9_read_bit(&header_bc);
|
|
pc->clamp_type = (CLAMP_TYPE)vp9_read_bit(&header_bc);
|
|
pc->error_resilient_mode = vp9_read_bit(&header_bc);
|
|
|
|
xd->lossless = vp9_read_bit(&header_bc);
|
|
if (xd->lossless) {
|
|
xd->inv_txm4x4_1 = vp9_short_iwalsh4x4_1;
|
|
xd->inv_txm4x4 = vp9_short_iwalsh4x4;
|
|
xd->itxm_add = vp9_idct_add_lossless_c;
|
|
xd->itxm_add_y_block = vp9_idct_add_y_block_lossless_c;
|
|
xd->itxm_add_uv_block = vp9_idct_add_uv_block_lossless_c;
|
|
} else {
|
|
xd->inv_txm4x4_1 = vp9_short_idct4x4_1;
|
|
xd->inv_txm4x4 = vp9_short_idct4x4;
|
|
xd->itxm_add = vp9_idct_add;
|
|
xd->itxm_add_y_block = vp9_idct_add_y_block;
|
|
xd->itxm_add_uv_block = vp9_idct_add_uv_block;
|
|
}
|
|
|
|
setup_loopfilter(pc, xd, &header_bc);
|
|
|
|
setup_quantization(pbi, &header_bc);
|
|
|
|
// Determine if the golden frame or ARF buffer should be updated and how.
|
|
// For all non key frames the GF and ARF refresh flags and sign bias
|
|
// flags must be set explicitly.
|
|
if (pc->frame_type == KEY_FRAME) {
|
|
for (i = 0; i < ALLOWED_REFS_PER_FRAME; ++i)
|
|
pc->active_ref_idx[i] = pc->new_fb_idx;
|
|
} else {
|
|
// Should the GF or ARF be updated from the current frame
|
|
pbi->refresh_frame_flags = vp9_read_literal(&header_bc, NUM_REF_FRAMES);
|
|
|
|
// Select active reference frames and calculate scaling factors
|
|
for (i = 0; i < ALLOWED_REFS_PER_FRAME; ++i) {
|
|
const int ref = vp9_read_literal(&header_bc, NUM_REF_FRAMES_LG2);
|
|
const int mapped_ref = pc->ref_frame_map[ref];
|
|
YV12_BUFFER_CONFIG *const fb = &pc->yv12_fb[mapped_ref];
|
|
struct scale_factors *const sf = &pc->active_ref_scale[i];
|
|
|
|
pc->active_ref_idx[i] = mapped_ref;
|
|
if (mapped_ref >= NUM_YV12_BUFFERS)
|
|
memset(sf, 0, sizeof(*sf));
|
|
else
|
|
vp9_setup_scale_factors_for_frame(sf,
|
|
fb->y_crop_width, fb->y_crop_height,
|
|
pc->width, pc->height);
|
|
}
|
|
|
|
// Read the sign bias for each reference frame buffer.
|
|
for (i = 0; i < ALLOWED_REFS_PER_FRAME; ++i) {
|
|
pc->ref_frame_sign_bias[i + 1] = vp9_read_bit(&header_bc);
|
|
}
|
|
|
|
xd->allow_high_precision_mv = vp9_read_bit(&header_bc);
|
|
pc->mcomp_filter_type = read_mcomp_filter_type(&header_bc);
|
|
|
|
// To enable choice of different interpolation filters
|
|
vp9_setup_interp_filters(xd, pc->mcomp_filter_type, pc);
|
|
}
|
|
|
|
if (!pc->error_resilient_mode) {
|
|
pc->refresh_frame_context = vp9_read_bit(&header_bc);
|
|
pc->frame_parallel_decoding_mode = vp9_read_bit(&header_bc);
|
|
} else {
|
|
pc->refresh_frame_context = 0;
|
|
pc->frame_parallel_decoding_mode = 1;
|
|
}
|
|
|
|
pc->frame_context_idx = vp9_read_literal(&header_bc, NUM_FRAME_CONTEXTS_LG2);
|
|
pc->fc = pc->frame_contexts[pc->frame_context_idx];
|
|
|
|
setup_segmentation(pc, xd, &header_bc);
|
|
|
|
setup_pred_probs(pc, &header_bc);
|
|
|
|
setup_txfm_mode(pc, xd->lossless, &header_bc);
|
|
|
|
// Read inter mode probability context updates
|
|
if (pc->frame_type != KEY_FRAME) {
|
|
int i, j;
|
|
for (i = 0; i < INTER_MODE_CONTEXTS; ++i)
|
|
for (j = 0; j < 4; ++j)
|
|
if (vp9_read(&header_bc, 252))
|
|
pc->fc.vp9_mode_contexts[i][j] = vp9_read_prob(&header_bc);
|
|
}
|
|
#if CONFIG_MODELCOEFPROB
|
|
if (pc->frame_type == KEY_FRAME)
|
|
vp9_default_coef_probs(pc);
|
|
#endif
|
|
|
|
update_frame_context(&pc->fc);
|
|
|
|
read_coef_probs(pbi, &header_bc);
|
|
|
|
// Initialize xd pointers. Any reference should do for xd->pre, so use 0.
|
|
setup_pre_planes(xd, &pc->yv12_fb[pc->active_ref_idx[0]], NULL,
|
|
0, 0, NULL, NULL);
|
|
setup_dst_planes(xd, new_fb, 0, 0);
|
|
|
|
// Create the segmentation map structure and set to 0
|
|
if (!pc->last_frame_seg_map)
|
|
CHECK_MEM_ERROR(pc->last_frame_seg_map,
|
|
vpx_calloc((pc->mi_rows * pc->mi_cols), 1));
|
|
|
|
vp9_setup_block_dptrs(xd, pc->subsampling_x, pc->subsampling_y);
|
|
|
|
// clear out the coeff buffer
|
|
for (i = 0; i < MAX_MB_PLANE; ++i)
|
|
vp9_zero(xd->plane[i].qcoeff);
|
|
|
|
vp9_decode_mode_mvs_init(pbi, &header_bc);
|
|
|
|
decode_tiles(pbi, data, first_partition_size, &header_bc, &residual_bc);
|
|
|
|
pc->last_width = pc->width;
|
|
pc->last_height = pc->height;
|
|
|
|
new_fb->corrupted = vp9_reader_has_error(&header_bc) | xd->corrupted;
|
|
|
|
if (!pbi->decoded_key_frame) {
|
|
if (pc->frame_type == KEY_FRAME && !new_fb->corrupted)
|
|
pbi->decoded_key_frame = 1;
|
|
else
|
|
vpx_internal_error(&pc->error, VPX_CODEC_CORRUPT_FRAME,
|
|
"A stream must start with a complete key frame");
|
|
}
|
|
|
|
// Adaptation
|
|
if (!pc->error_resilient_mode && !pc->frame_parallel_decoding_mode) {
|
|
vp9_adapt_coef_probs(pc);
|
|
|
|
if (pc->frame_type != KEY_FRAME) {
|
|
vp9_adapt_mode_probs(pc);
|
|
vp9_adapt_nmv_probs(pc, xd->allow_high_precision_mv);
|
|
vp9_adapt_mode_context(pc);
|
|
}
|
|
}
|
|
|
|
#if CONFIG_IMPLICIT_SEGMENTATION
|
|
// If signalled at the frame level apply implicit updates to the segment map.
|
|
if (!pc->error_resilient_mode && xd->allow_implicit_segment_update) {
|
|
vp9_implicit_segment_map_update(pc);
|
|
}
|
|
#endif
|
|
|
|
if (pc->refresh_frame_context)
|
|
pc->frame_contexts[pc->frame_context_idx] = pc->fc;
|
|
|
|
*p_data_end = vp9_reader_find_end(&residual_bc);
|
|
return 0;
|
|
}
|