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-rw-r--r--third_party/aom/av1/encoder/x86/encodetxb_sse2.c505
1 files changed, 505 insertions, 0 deletions
diff --git a/third_party/aom/av1/encoder/x86/encodetxb_sse2.c b/third_party/aom/av1/encoder/x86/encodetxb_sse2.c
new file mode 100644
index 0000000000..dedb4d02f6
--- /dev/null
+++ b/third_party/aom/av1/encoder/x86/encodetxb_sse2.c
@@ -0,0 +1,505 @@
+/*
+ * Copyright (c) 2017, Alliance for Open Media. All rights reserved
+ *
+ * This source code is subject to the terms of the BSD 2 Clause License and
+ * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
+ * was not distributed with this source code in the LICENSE file, you can
+ * obtain it at www.aomedia.org/license/software. If the Alliance for Open
+ * Media Patent License 1.0 was not distributed with this source code in the
+ * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
+ */
+
+#include <assert.h>
+#include <emmintrin.h> // SSE2
+
+#include "aom/aom_integer.h"
+#include "aom_dsp/x86/mem_sse2.h"
+#include "av1/common/onyxc_int.h"
+#include "av1/common/txb_common.h"
+
+static INLINE void load_levels_4x4x5_sse2(const uint8_t *const src,
+ const int stride,
+ const ptrdiff_t *const offsets,
+ __m128i *const level) {
+ level[0] = load_8bit_4x4_to_1_reg_sse2(src + 1, stride);
+ level[1] = load_8bit_4x4_to_1_reg_sse2(src + stride, stride);
+ level[2] = load_8bit_4x4_to_1_reg_sse2(src + offsets[0], stride);
+ level[3] = load_8bit_4x4_to_1_reg_sse2(src + offsets[1], stride);
+ level[4] = load_8bit_4x4_to_1_reg_sse2(src + offsets[2], stride);
+}
+
+static INLINE void load_levels_8x2x5_sse2(const uint8_t *const src,
+ const int stride,
+ const ptrdiff_t *const offsets,
+ __m128i *const level) {
+ level[0] = load_8bit_8x2_to_1_reg_sse2(src + 1, stride);
+ level[1] = load_8bit_8x2_to_1_reg_sse2(src + stride, stride);
+ level[2] = load_8bit_8x2_to_1_reg_sse2(src + offsets[0], stride);
+ level[3] = load_8bit_8x2_to_1_reg_sse2(src + offsets[1], stride);
+ level[4] = load_8bit_8x2_to_1_reg_sse2(src + offsets[2], stride);
+}
+
+static INLINE void load_levels_16x1x5_sse2(const uint8_t *const src,
+ const int stride,
+ const ptrdiff_t *const offsets,
+ __m128i *const level) {
+ level[0] = _mm_loadu_si128((__m128i *)(src + 1));
+ level[1] = _mm_loadu_si128((__m128i *)(src + stride));
+ level[2] = _mm_loadu_si128((__m128i *)(src + offsets[0]));
+ level[3] = _mm_loadu_si128((__m128i *)(src + offsets[1]));
+ level[4] = _mm_loadu_si128((__m128i *)(src + offsets[2]));
+}
+
+static INLINE __m128i get_coeff_contexts_kernel_sse2(__m128i *const level) {
+ const __m128i const_3 = _mm_set1_epi8(3);
+ const __m128i const_4 = _mm_set1_epi8(4);
+ __m128i count;
+
+ count = _mm_min_epu8(level[0], const_3);
+ level[1] = _mm_min_epu8(level[1], const_3);
+ level[2] = _mm_min_epu8(level[2], const_3);
+ level[3] = _mm_min_epu8(level[3], const_3);
+ level[4] = _mm_min_epu8(level[4], const_3);
+ count = _mm_add_epi8(count, level[1]);
+ count = _mm_add_epi8(count, level[2]);
+ count = _mm_add_epi8(count, level[3]);
+ count = _mm_add_epi8(count, level[4]);
+ count = _mm_avg_epu8(count, _mm_setzero_si128());
+ count = _mm_min_epu8(count, const_4);
+ return count;
+}
+
+static INLINE void get_4_nz_map_contexts_2d(const uint8_t *levels,
+ const int height,
+ const ptrdiff_t *const offsets,
+ int8_t *const coeff_contexts) {
+ const int stride = 4 + TX_PAD_HOR;
+ const __m128i pos_to_offset_large = _mm_set1_epi8(21);
+ __m128i pos_to_offset =
+ (height == 4)
+ ? _mm_setr_epi8(0, 1, 6, 6, 1, 6, 6, 21, 6, 6, 21, 21, 6, 21, 21, 21)
+ : _mm_setr_epi8(0, 11, 11, 11, 11, 11, 11, 11, 6, 6, 21, 21, 6, 21,
+ 21, 21);
+ __m128i count;
+ __m128i level[5];
+ int8_t *cc = coeff_contexts;
+ int row = height;
+
+ assert(!(height % 4));
+
+ do {
+ load_levels_4x4x5_sse2(levels, stride, offsets, level);
+ count = get_coeff_contexts_kernel_sse2(level);
+ count = _mm_add_epi8(count, pos_to_offset);
+ _mm_store_si128((__m128i *)cc, count);
+ pos_to_offset = pos_to_offset_large;
+ levels += 4 * stride;
+ cc += 16;
+ row -= 4;
+ } while (row);
+
+ coeff_contexts[0] = 0;
+}
+
+static INLINE void get_4_nz_map_contexts_hor(const uint8_t *levels,
+ const int height,
+ const ptrdiff_t *const offsets,
+ int8_t *coeff_contexts) {
+ const int stride = 4 + TX_PAD_HOR;
+ const __m128i pos_to_offset =
+ _mm_setr_epi8(SIG_COEF_CONTEXTS_2D + 0, SIG_COEF_CONTEXTS_2D + 5,
+ SIG_COEF_CONTEXTS_2D + 10, SIG_COEF_CONTEXTS_2D + 10,
+ SIG_COEF_CONTEXTS_2D + 0, SIG_COEF_CONTEXTS_2D + 5,
+ SIG_COEF_CONTEXTS_2D + 10, SIG_COEF_CONTEXTS_2D + 10,
+ SIG_COEF_CONTEXTS_2D + 0, SIG_COEF_CONTEXTS_2D + 5,
+ SIG_COEF_CONTEXTS_2D + 10, SIG_COEF_CONTEXTS_2D + 10,
+ SIG_COEF_CONTEXTS_2D + 0, SIG_COEF_CONTEXTS_2D + 5,
+ SIG_COEF_CONTEXTS_2D + 10, SIG_COEF_CONTEXTS_2D + 10);
+ __m128i count;
+ __m128i level[5];
+ int row = height;
+
+ assert(!(height % 4));
+
+ do {
+ load_levels_4x4x5_sse2(levels, stride, offsets, level);
+ count = get_coeff_contexts_kernel_sse2(level);
+ count = _mm_add_epi8(count, pos_to_offset);
+ _mm_store_si128((__m128i *)coeff_contexts, count);
+ levels += 4 * stride;
+ coeff_contexts += 16;
+ row -= 4;
+ } while (row);
+}
+
+static INLINE void get_4_nz_map_contexts_ver(const uint8_t *levels,
+ const int height,
+ const ptrdiff_t *const offsets,
+ int8_t *coeff_contexts) {
+ const int stride = 4 + TX_PAD_HOR;
+ const __m128i pos_to_offset_large = _mm_set1_epi8(SIG_COEF_CONTEXTS_2D + 10);
+ __m128i pos_to_offset =
+ _mm_setr_epi8(SIG_COEF_CONTEXTS_2D + 0, SIG_COEF_CONTEXTS_2D + 0,
+ SIG_COEF_CONTEXTS_2D + 0, SIG_COEF_CONTEXTS_2D + 0,
+ SIG_COEF_CONTEXTS_2D + 5, SIG_COEF_CONTEXTS_2D + 5,
+ SIG_COEF_CONTEXTS_2D + 5, SIG_COEF_CONTEXTS_2D + 5,
+ SIG_COEF_CONTEXTS_2D + 10, SIG_COEF_CONTEXTS_2D + 10,
+ SIG_COEF_CONTEXTS_2D + 10, SIG_COEF_CONTEXTS_2D + 10,
+ SIG_COEF_CONTEXTS_2D + 10, SIG_COEF_CONTEXTS_2D + 10,
+ SIG_COEF_CONTEXTS_2D + 10, SIG_COEF_CONTEXTS_2D + 10);
+ __m128i count;
+ __m128i level[5];
+ int row = height;
+
+ assert(!(height % 4));
+
+ do {
+ load_levels_4x4x5_sse2(levels, stride, offsets, level);
+ count = get_coeff_contexts_kernel_sse2(level);
+ count = _mm_add_epi8(count, pos_to_offset);
+ _mm_store_si128((__m128i *)coeff_contexts, count);
+ pos_to_offset = pos_to_offset_large;
+ levels += 4 * stride;
+ coeff_contexts += 16;
+ row -= 4;
+ } while (row);
+}
+
+static INLINE void get_8_coeff_contexts_2d(const uint8_t *levels,
+ const int height,
+ const ptrdiff_t *const offsets,
+ int8_t *coeff_contexts) {
+ const int stride = 8 + TX_PAD_HOR;
+ int8_t *cc = coeff_contexts;
+ int row = height;
+ __m128i count;
+ __m128i level[5];
+ __m128i pos_to_offset[3];
+
+ assert(!(height % 2));
+
+ if (height == 8) {
+ pos_to_offset[0] =
+ _mm_setr_epi8(0, 1, 6, 6, 21, 21, 21, 21, 1, 6, 6, 21, 21, 21, 21, 21);
+ pos_to_offset[1] = _mm_setr_epi8(6, 6, 21, 21, 21, 21, 21, 21, 6, 21, 21,
+ 21, 21, 21, 21, 21);
+ } else if (height < 8) {
+ pos_to_offset[0] = _mm_setr_epi8(0, 16, 6, 6, 21, 21, 21, 21, 16, 16, 6, 21,
+ 21, 21, 21, 21);
+ pos_to_offset[1] = _mm_setr_epi8(16, 16, 21, 21, 21, 21, 21, 21, 16, 16, 21,
+ 21, 21, 21, 21, 21);
+ } else {
+ pos_to_offset[0] = _mm_setr_epi8(0, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
+ 11, 11, 11, 11, 11);
+ pos_to_offset[1] = _mm_setr_epi8(6, 6, 21, 21, 21, 21, 21, 21, 6, 21, 21,
+ 21, 21, 21, 21, 21);
+ }
+ pos_to_offset[2] = _mm_set1_epi8(21);
+
+ do {
+ load_levels_8x2x5_sse2(levels, stride, offsets, level);
+ count = get_coeff_contexts_kernel_sse2(level);
+ count = _mm_add_epi8(count, pos_to_offset[0]);
+ _mm_store_si128((__m128i *)cc, count);
+ pos_to_offset[0] = pos_to_offset[1];
+ pos_to_offset[1] = pos_to_offset[2];
+ levels += 2 * stride;
+ cc += 16;
+ row -= 2;
+ } while (row);
+
+ coeff_contexts[0] = 0;
+}
+
+static INLINE void get_8_coeff_contexts_hor(const uint8_t *levels,
+ const int height,
+ const ptrdiff_t *const offsets,
+ int8_t *coeff_contexts) {
+ const int stride = 8 + TX_PAD_HOR;
+ const __m128i pos_to_offset =
+ _mm_setr_epi8(SIG_COEF_CONTEXTS_2D + 0, SIG_COEF_CONTEXTS_2D + 5,
+ SIG_COEF_CONTEXTS_2D + 10, SIG_COEF_CONTEXTS_2D + 10,
+ SIG_COEF_CONTEXTS_2D + 10, SIG_COEF_CONTEXTS_2D + 10,
+ SIG_COEF_CONTEXTS_2D + 10, SIG_COEF_CONTEXTS_2D + 10,
+ SIG_COEF_CONTEXTS_2D + 0, SIG_COEF_CONTEXTS_2D + 5,
+ SIG_COEF_CONTEXTS_2D + 10, SIG_COEF_CONTEXTS_2D + 10,
+ SIG_COEF_CONTEXTS_2D + 10, SIG_COEF_CONTEXTS_2D + 10,
+ SIG_COEF_CONTEXTS_2D + 10, SIG_COEF_CONTEXTS_2D + 10);
+ int row = height;
+ __m128i count;
+ __m128i level[5];
+
+ assert(!(height % 2));
+
+ do {
+ load_levels_8x2x5_sse2(levels, stride, offsets, level);
+ count = get_coeff_contexts_kernel_sse2(level);
+ count = _mm_add_epi8(count, pos_to_offset);
+ _mm_store_si128((__m128i *)coeff_contexts, count);
+ levels += 2 * stride;
+ coeff_contexts += 16;
+ row -= 2;
+ } while (row);
+}
+
+static INLINE void get_8_coeff_contexts_ver(const uint8_t *levels,
+ const int height,
+ const ptrdiff_t *const offsets,
+ int8_t *coeff_contexts) {
+ const int stride = 8 + TX_PAD_HOR;
+ const __m128i pos_to_offset_large = _mm_set1_epi8(SIG_COEF_CONTEXTS_2D + 10);
+ __m128i pos_to_offset =
+ _mm_setr_epi8(SIG_COEF_CONTEXTS_2D + 0, SIG_COEF_CONTEXTS_2D + 0,
+ SIG_COEF_CONTEXTS_2D + 0, SIG_COEF_CONTEXTS_2D + 0,
+ SIG_COEF_CONTEXTS_2D + 0, SIG_COEF_CONTEXTS_2D + 0,
+ SIG_COEF_CONTEXTS_2D + 0, SIG_COEF_CONTEXTS_2D + 0,
+ SIG_COEF_CONTEXTS_2D + 5, SIG_COEF_CONTEXTS_2D + 5,
+ SIG_COEF_CONTEXTS_2D + 5, SIG_COEF_CONTEXTS_2D + 5,
+ SIG_COEF_CONTEXTS_2D + 5, SIG_COEF_CONTEXTS_2D + 5,
+ SIG_COEF_CONTEXTS_2D + 5, SIG_COEF_CONTEXTS_2D + 5);
+ int row = height;
+ __m128i count;
+ __m128i level[5];
+
+ assert(!(height % 2));
+
+ do {
+ load_levels_8x2x5_sse2(levels, stride, offsets, level);
+ count = get_coeff_contexts_kernel_sse2(level);
+ count = _mm_add_epi8(count, pos_to_offset);
+ _mm_store_si128((__m128i *)coeff_contexts, count);
+ pos_to_offset = pos_to_offset_large;
+ levels += 2 * stride;
+ coeff_contexts += 16;
+ row -= 2;
+ } while (row);
+}
+
+static INLINE void get_16n_coeff_contexts_2d(const uint8_t *levels,
+ const int real_width,
+ const int real_height,
+ const int width, const int height,
+ const ptrdiff_t *const offsets,
+ int8_t *coeff_contexts) {
+ const int stride = width + TX_PAD_HOR;
+ int8_t *cc = coeff_contexts;
+ int row = height;
+ __m128i pos_to_offset[5];
+ __m128i pos_to_offset_large[3];
+ __m128i count;
+ __m128i level[5];
+
+ assert(!(width % 16));
+
+ pos_to_offset_large[2] = _mm_set1_epi8(21);
+ if (real_width == real_height) {
+ pos_to_offset[0] = _mm_setr_epi8(0, 1, 6, 6, 21, 21, 21, 21, 21, 21, 21, 21,
+ 21, 21, 21, 21);
+ pos_to_offset[1] = _mm_setr_epi8(1, 6, 6, 21, 21, 21, 21, 21, 21, 21, 21,
+ 21, 21, 21, 21, 21);
+ pos_to_offset[2] = _mm_setr_epi8(6, 6, 21, 21, 21, 21, 21, 21, 21, 21, 21,
+ 21, 21, 21, 21, 21);
+ pos_to_offset[3] = _mm_setr_epi8(6, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
+ 21, 21, 21, 21, 21);
+ pos_to_offset[4] = pos_to_offset_large[0] = pos_to_offset_large[1] =
+ pos_to_offset_large[2];
+ } else if (real_width > real_height) {
+ pos_to_offset[0] = _mm_setr_epi8(0, 16, 6, 6, 21, 21, 21, 21, 21, 21, 21,
+ 21, 21, 21, 21, 21);
+ pos_to_offset[1] = _mm_setr_epi8(16, 16, 6, 21, 21, 21, 21, 21, 21, 21, 21,
+ 21, 21, 21, 21, 21);
+ pos_to_offset[2] = pos_to_offset[3] = pos_to_offset[4] = _mm_setr_epi8(
+ 16, 16, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21);
+ pos_to_offset_large[0] = pos_to_offset_large[1] = pos_to_offset_large[2];
+ } else { // real_width < real_height
+ pos_to_offset[0] = pos_to_offset[1] = _mm_setr_epi8(
+ 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11);
+ pos_to_offset[2] = _mm_setr_epi8(6, 6, 21, 21, 21, 21, 21, 21, 21, 21, 21,
+ 21, 21, 21, 21, 21);
+ pos_to_offset[3] = _mm_setr_epi8(6, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
+ 21, 21, 21, 21, 21);
+ pos_to_offset[4] = pos_to_offset_large[2];
+ pos_to_offset_large[0] = pos_to_offset_large[1] = _mm_set1_epi8(11);
+ }
+
+ do {
+ int w = width;
+
+ do {
+ load_levels_16x1x5_sse2(levels, stride, offsets, level);
+ count = get_coeff_contexts_kernel_sse2(level);
+ count = _mm_add_epi8(count, pos_to_offset[0]);
+ _mm_store_si128((__m128i *)cc, count);
+ levels += 16;
+ cc += 16;
+ w -= 16;
+ pos_to_offset[0] = pos_to_offset_large[0];
+ } while (w);
+
+ pos_to_offset[0] = pos_to_offset[1];
+ pos_to_offset[1] = pos_to_offset[2];
+ pos_to_offset[2] = pos_to_offset[3];
+ pos_to_offset[3] = pos_to_offset[4];
+ pos_to_offset_large[0] = pos_to_offset_large[1];
+ pos_to_offset_large[1] = pos_to_offset_large[2];
+ levels += TX_PAD_HOR;
+ } while (--row);
+
+ coeff_contexts[0] = 0;
+}
+
+static INLINE void get_16n_coeff_contexts_hor(const uint8_t *levels,
+ const int width, const int height,
+ const ptrdiff_t *const offsets,
+ int8_t *coeff_contexts) {
+ const int stride = width + TX_PAD_HOR;
+ const __m128i pos_to_offset_large =
+ _mm_setr_epi8(SIG_COEF_CONTEXTS_2D + 10, SIG_COEF_CONTEXTS_2D + 10,
+ SIG_COEF_CONTEXTS_2D + 10, SIG_COEF_CONTEXTS_2D + 10,
+ SIG_COEF_CONTEXTS_2D + 10, SIG_COEF_CONTEXTS_2D + 10,
+ SIG_COEF_CONTEXTS_2D + 10, SIG_COEF_CONTEXTS_2D + 10,
+ SIG_COEF_CONTEXTS_2D + 10, SIG_COEF_CONTEXTS_2D + 10,
+ SIG_COEF_CONTEXTS_2D + 10, SIG_COEF_CONTEXTS_2D + 10,
+ SIG_COEF_CONTEXTS_2D + 10, SIG_COEF_CONTEXTS_2D + 10,
+ SIG_COEF_CONTEXTS_2D + 10, SIG_COEF_CONTEXTS_2D + 10);
+ __m128i count;
+ __m128i level[5];
+ int row = height;
+
+ assert(!(width % 16));
+
+ do {
+ __m128i pos_to_offset =
+ _mm_setr_epi8(SIG_COEF_CONTEXTS_2D + 0, SIG_COEF_CONTEXTS_2D + 5,
+ SIG_COEF_CONTEXTS_2D + 10, SIG_COEF_CONTEXTS_2D + 10,
+ SIG_COEF_CONTEXTS_2D + 10, SIG_COEF_CONTEXTS_2D + 10,
+ SIG_COEF_CONTEXTS_2D + 10, SIG_COEF_CONTEXTS_2D + 10,
+ SIG_COEF_CONTEXTS_2D + 10, SIG_COEF_CONTEXTS_2D + 10,
+ SIG_COEF_CONTEXTS_2D + 10, SIG_COEF_CONTEXTS_2D + 10,
+ SIG_COEF_CONTEXTS_2D + 10, SIG_COEF_CONTEXTS_2D + 10,
+ SIG_COEF_CONTEXTS_2D + 10, SIG_COEF_CONTEXTS_2D + 10);
+ int w = width;
+
+ do {
+ load_levels_16x1x5_sse2(levels, stride, offsets, level);
+ count = get_coeff_contexts_kernel_sse2(level);
+ count = _mm_add_epi8(count, pos_to_offset);
+ _mm_store_si128((__m128i *)coeff_contexts, count);
+ pos_to_offset = pos_to_offset_large;
+ levels += 16;
+ coeff_contexts += 16;
+ w -= 16;
+ } while (w);
+
+ levels += TX_PAD_HOR;
+ } while (--row);
+}
+
+static INLINE void get_16n_coeff_contexts_ver(const uint8_t *levels,
+ const int width, const int height,
+ const ptrdiff_t *const offsets,
+ int8_t *coeff_contexts) {
+ const int stride = width + TX_PAD_HOR;
+ __m128i pos_to_offset[3];
+ __m128i count;
+ __m128i level[5];
+ int row = height;
+
+ assert(!(width % 16));
+
+ pos_to_offset[0] = _mm_set1_epi8(SIG_COEF_CONTEXTS_2D + 0);
+ pos_to_offset[1] = _mm_set1_epi8(SIG_COEF_CONTEXTS_2D + 5);
+ pos_to_offset[2] = _mm_set1_epi8(SIG_COEF_CONTEXTS_2D + 10);
+
+ do {
+ int w = width;
+
+ do {
+ load_levels_16x1x5_sse2(levels, stride, offsets, level);
+ count = get_coeff_contexts_kernel_sse2(level);
+ count = _mm_add_epi8(count, pos_to_offset[0]);
+ _mm_store_si128((__m128i *)coeff_contexts, count);
+ levels += 16;
+ coeff_contexts += 16;
+ w -= 16;
+ } while (w);
+
+ pos_to_offset[0] = pos_to_offset[1];
+ pos_to_offset[1] = pos_to_offset[2];
+ levels += TX_PAD_HOR;
+ } while (--row);
+}
+
+// Note: levels[] must be in the range [0, 127], inclusive.
+void av1_get_nz_map_contexts_sse2(const uint8_t *const levels,
+ const int16_t *const scan, const uint16_t eob,
+ const TX_SIZE tx_size,
+ const TX_CLASS tx_class,
+ int8_t *const coeff_contexts) {
+ const int last_idx = eob - 1;
+ if (!last_idx) {
+ coeff_contexts[0] = 0;
+ return;
+ }
+
+ const int real_width = tx_size_wide[tx_size];
+ const int real_height = tx_size_high[tx_size];
+ const int width = get_txb_wide(tx_size);
+ const int height = get_txb_high(tx_size);
+ const int stride = width + TX_PAD_HOR;
+ ptrdiff_t offsets[3];
+
+ /* coeff_contexts must be 16 byte aligned. */
+ assert(!((intptr_t)coeff_contexts & 0xf));
+
+ if (tx_class == TX_CLASS_2D) {
+ offsets[0] = 0 * stride + 2;
+ offsets[1] = 1 * stride + 1;
+ offsets[2] = 2 * stride + 0;
+
+ if (width == 4) {
+ get_4_nz_map_contexts_2d(levels, height, offsets, coeff_contexts);
+ } else if (width == 8) {
+ get_8_coeff_contexts_2d(levels, height, offsets, coeff_contexts);
+ } else if (width == 16) {
+ get_16n_coeff_contexts_2d(levels, real_width, real_height, width, height,
+ offsets, coeff_contexts);
+ } else {
+ get_16n_coeff_contexts_2d(levels, real_width, real_height, width, height,
+ offsets, coeff_contexts);
+ }
+ } else if (tx_class == TX_CLASS_HORIZ) {
+ offsets[0] = 2;
+ offsets[1] = 3;
+ offsets[2] = 4;
+ if (width == 4) {
+ get_4_nz_map_contexts_hor(levels, height, offsets, coeff_contexts);
+ } else if (width == 8) {
+ get_8_coeff_contexts_hor(levels, height, offsets, coeff_contexts);
+ } else {
+ get_16n_coeff_contexts_hor(levels, width, height, offsets,
+ coeff_contexts);
+ }
+ } else { // TX_CLASS_VERT
+ offsets[0] = 2 * stride;
+ offsets[1] = 3 * stride;
+ offsets[2] = 4 * stride;
+ if (width == 4) {
+ get_4_nz_map_contexts_ver(levels, height, offsets, coeff_contexts);
+ } else if (width == 8) {
+ get_8_coeff_contexts_ver(levels, height, offsets, coeff_contexts);
+ } else {
+ get_16n_coeff_contexts_ver(levels, width, height, offsets,
+ coeff_contexts);
+ }
+ }
+
+ const int bwl = get_txb_bwl(tx_size);
+ const int pos = scan[last_idx];
+ if (last_idx <= (height << bwl) / 8)
+ coeff_contexts[pos] = 1;
+ else if (last_idx <= (height << bwl) / 4)
+ coeff_contexts[pos] = 2;
+ else
+ coeff_contexts[pos] = 3;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-11 22:10:12 +0000