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-rw-r--r--third_party/aom/av1/encoder/arm/neon/encodetxb_neon.c646
1 files changed, 646 insertions, 0 deletions
diff --git a/third_party/aom/av1/encoder/arm/neon/encodetxb_neon.c b/third_party/aom/av1/encoder/arm/neon/encodetxb_neon.c
new file mode 100644
index 0000000000..582863a27c
--- /dev/null
+++ b/third_party/aom/av1/encoder/arm/neon/encodetxb_neon.c
@@ -0,0 +1,646 @@
+/*
+ * Copyright (c) 2016, 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 <arm_neon.h>
+#include <assert.h>
+#include <math.h>
+
+#include "config/aom_config.h"
+
+#include "aom_dsp/arm/mem_neon.h"
+#include "av1/common/txb_common.h"
+#include "av1/encoder/encodetxb.h"
+
+void av1_txb_init_levels_neon(const tran_low_t *const coeff, const int width,
+ const int height, uint8_t *const levels) {
+ const int stride = height + TX_PAD_HOR;
+ memset(levels - TX_PAD_TOP * stride, 0,
+ sizeof(*levels) * TX_PAD_TOP * stride);
+ memset(levels + stride * width, 0,
+ sizeof(*levels) * (TX_PAD_BOTTOM * stride + TX_PAD_END));
+
+ const int32x4_t zeros = vdupq_n_s32(0);
+ int i = 0;
+ uint8_t *ls = levels;
+ const tran_low_t *cf = coeff;
+ if (height == 4) {
+ do {
+ const int32x4_t coeffA = vld1q_s32(cf);
+ const int32x4_t coeffB = vld1q_s32(cf + height);
+ const int16x8_t coeffAB =
+ vcombine_s16(vqmovn_s32(coeffA), vqmovn_s32(coeffB));
+ const int16x8_t absAB = vqabsq_s16(coeffAB);
+ const int8x8_t absABs = vqmovn_s16(absAB);
+#if AOM_ARCH_AARCH64
+ const int8x16_t absAB8 =
+ vcombine_s8(absABs, vreinterpret_s8_s32(vget_low_s32(zeros)));
+ const uint8x16_t lsAB =
+ vreinterpretq_u8_s32(vzip1q_s32(vreinterpretq_s32_s8(absAB8), zeros));
+#else
+ const int32x2x2_t absAB8 =
+ vzip_s32(vreinterpret_s32_s8(absABs), vget_low_s32(zeros));
+ const uint8x16_t lsAB =
+ vreinterpretq_u8_s32(vcombine_s32(absAB8.val[0], absAB8.val[1]));
+#endif
+ vst1q_u8(ls, lsAB);
+ ls += (stride << 1);
+ cf += (height << 1);
+ i += 2;
+ } while (i < width);
+ } else if (height == 8) {
+ do {
+ const int16x8_t coeffAB = load_tran_low_to_s16q(cf);
+ const int16x8_t absAB = vqabsq_s16(coeffAB);
+ const uint8x16_t absAB8 = vreinterpretq_u8_s8(vcombine_s8(
+ vqmovn_s16(absAB), vreinterpret_s8_s32(vget_low_s32(zeros))));
+ vst1q_u8(ls, absAB8);
+ ls += stride;
+ cf += height;
+ i += 1;
+ } while (i < width);
+ } else {
+ do {
+ int j = 0;
+ do {
+ const int16x8_t coeffAB = load_tran_low_to_s16q(cf);
+ const int16x8_t coeffCD = load_tran_low_to_s16q(cf + 8);
+ const int16x8_t absAB = vqabsq_s16(coeffAB);
+ const int16x8_t absCD = vqabsq_s16(coeffCD);
+ const uint8x16_t absABCD = vreinterpretq_u8_s8(
+ vcombine_s8(vqmovn_s16(absAB), vqmovn_s16(absCD)));
+ vst1q_u8((ls + j), absABCD);
+ j += 16;
+ cf += 16;
+ } while (j < height);
+ *(int32_t *)(ls + height) = 0;
+ ls += stride;
+ i += 1;
+ } while (i < width);
+ }
+}
+
+// get_4_nz_map_contexts_2d coefficients:
+static const DECLARE_ALIGNED(16, uint8_t, c_4_po_2d[2][16]) = {
+ { 0, 1, 6, 6, 1, 6, 6, 21, 6, 6, 21, 21, 6, 21, 21, 21 },
+ { 0, 16, 16, 16, 16, 16, 16, 16, 6, 6, 21, 21, 6, 21, 21, 21 }
+};
+
+// get_4_nz_map_contexts_hor coefficients:
+/* clang-format off */
+#define SIG_COEF_CONTEXTS_2D_X4_051010 \
+ (SIG_COEF_CONTEXTS_2D + ((SIG_COEF_CONTEXTS_2D + 5) << 8) + \
+ ((SIG_COEF_CONTEXTS_2D + 10) << 16) + ((SIG_COEF_CONTEXTS_2D + 10) << 24))
+/* clang-format on */
+
+// get_4_nz_map_contexts_ver coefficients:
+static const DECLARE_ALIGNED(16, uint8_t, c_4_po_hor[16]) = {
+ 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
+};
+
+// get_8_coeff_contexts_2d coefficients:
+// if (width == 8)
+static const DECLARE_ALIGNED(16, uint8_t, c_8_po_2d_8[2][16]) = {
+ { 0, 1, 6, 6, 21, 21, 21, 21, 1, 6, 6, 21, 21, 21, 21, 21 },
+ { 6, 6, 21, 21, 21, 21, 21, 21, 6, 21, 21, 21, 21, 21, 21, 21 }
+};
+// if (width < 8)
+static const DECLARE_ALIGNED(16, uint8_t, c_8_po_2d_l[2][16]) = {
+ { 0, 11, 6, 6, 21, 21, 21, 21, 11, 11, 6, 21, 21, 21, 21, 21 },
+ { 11, 11, 21, 21, 21, 21, 21, 21, 11, 11, 21, 21, 21, 21, 21, 21 }
+};
+
+// if (width > 8)
+static const DECLARE_ALIGNED(16, uint8_t, c_8_po_2d_g[2][16]) = {
+ { 0, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16 },
+ { 6, 6, 21, 21, 21, 21, 21, 21, 6, 21, 21, 21, 21, 21, 21, 21 }
+};
+
+// get_4_nz_map_contexts_ver coefficients:
+static const DECLARE_ALIGNED(16, uint8_t, c_8_po_ver[16]) = {
+ 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
+};
+
+// get_16n_coeff_contexts_2d coefficients:
+// real_width == real_height
+static const DECLARE_ALIGNED(16, uint8_t, c_16_po_2d_e[4][16]) = {
+ { 0, 1, 6, 6, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21 },
+ { 1, 6, 6, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21 },
+ { 6, 6, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21 },
+ { 6, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21 }
+};
+
+// real_width < real_height
+static const DECLARE_ALIGNED(16, uint8_t, c_16_po_2d_g[3][16]) = {
+ { 0, 11, 6, 6, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21 },
+ { 11, 11, 6, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21 },
+ { 11, 11, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21 }
+};
+
+// real_width > real_height
+static const DECLARE_ALIGNED(16, uint8_t, c_16_po_2d_l[3][16]) = {
+ { 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16 },
+ { 6, 6, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21 },
+ { 6, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21 }
+};
+
+// get_16n_coeff_contexts_hor coefficients:
+static const DECLARE_ALIGNED(16, uint8_t, c_16_po_ver[16]) = {
+ 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
+};
+
+// end of coefficients declaration area
+
+static INLINE uint8x16_t load_8bit_4x4_to_1_reg(const uint8_t *const src,
+ const int byte_stride) {
+#if AOM_ARCH_AARCH64
+ uint32x4_t v_data = vld1q_u32((uint32_t *)src);
+ v_data = vld1q_lane_u32((uint32_t *)(src + 1 * byte_stride), v_data, 1);
+ v_data = vld1q_lane_u32((uint32_t *)(src + 2 * byte_stride), v_data, 2);
+ v_data = vld1q_lane_u32((uint32_t *)(src + 3 * byte_stride), v_data, 3);
+
+ return vreinterpretq_u8_u32(v_data);
+#else
+ return load_unaligned_u8q(src, byte_stride);
+#endif
+}
+
+static INLINE uint8x16_t load_8bit_8x2_to_1_reg(const uint8_t *const src,
+ const int byte_stride) {
+#if AOM_ARCH_AARCH64
+ uint64x2_t v_data = vld1q_u64((uint64_t *)src);
+ v_data = vld1q_lane_u64((uint64_t *)(src + 1 * byte_stride), v_data, 1);
+
+ return vreinterpretq_u8_u64(v_data);
+#else
+ uint8x8_t v_data_low = vld1_u8(src);
+ uint8x8_t v_data_high = vld1_u8(src + byte_stride);
+
+ return vcombine_u8(v_data_low, v_data_high);
+#endif
+}
+
+static INLINE uint8x16_t load_8bit_16x1_to_1_reg(const uint8_t *const src,
+ const int byte_stride) {
+ (void)byte_stride;
+ return vld1q_u8(src);
+}
+
+static INLINE void load_levels_4x4x5(const uint8_t *const src, const int stride,
+ const ptrdiff_t *const offsets,
+ uint8x16_t *const level) {
+ level[0] = load_8bit_4x4_to_1_reg(&src[1], stride);
+ level[1] = load_8bit_4x4_to_1_reg(&src[stride], stride);
+ level[2] = load_8bit_4x4_to_1_reg(&src[offsets[0]], stride);
+ level[3] = load_8bit_4x4_to_1_reg(&src[offsets[1]], stride);
+ level[4] = load_8bit_4x4_to_1_reg(&src[offsets[2]], stride);
+}
+
+static INLINE void load_levels_8x2x5(const uint8_t *const src, const int stride,
+ const ptrdiff_t *const offsets,
+ uint8x16_t *const level) {
+ level[0] = load_8bit_8x2_to_1_reg(&src[1], stride);
+ level[1] = load_8bit_8x2_to_1_reg(&src[stride], stride);
+ level[2] = load_8bit_8x2_to_1_reg(&src[offsets[0]], stride);
+ level[3] = load_8bit_8x2_to_1_reg(&src[offsets[1]], stride);
+ level[4] = load_8bit_8x2_to_1_reg(&src[offsets[2]], stride);
+}
+
+static INLINE void load_levels_16x1x5(const uint8_t *const src,
+ const int stride,
+ const ptrdiff_t *const offsets,
+ uint8x16_t *const level) {
+ level[0] = load_8bit_16x1_to_1_reg(&src[1], stride);
+ level[1] = load_8bit_16x1_to_1_reg(&src[stride], stride);
+ level[2] = load_8bit_16x1_to_1_reg(&src[offsets[0]], stride);
+ level[3] = load_8bit_16x1_to_1_reg(&src[offsets[1]], stride);
+ level[4] = load_8bit_16x1_to_1_reg(&src[offsets[2]], stride);
+}
+
+static INLINE uint8x16_t get_coeff_contexts_kernel(uint8x16_t *const level) {
+ const uint8x16_t const_3 = vdupq_n_u8(3);
+ const uint8x16_t const_4 = vdupq_n_u8(4);
+ uint8x16_t count;
+
+ count = vminq_u8(level[0], const_3);
+ level[1] = vminq_u8(level[1], const_3);
+ level[2] = vminq_u8(level[2], const_3);
+ level[3] = vminq_u8(level[3], const_3);
+ level[4] = vminq_u8(level[4], const_3);
+ count = vaddq_u8(count, level[1]);
+ count = vaddq_u8(count, level[2]);
+ count = vaddq_u8(count, level[3]);
+ count = vaddq_u8(count, level[4]);
+
+ count = vrshrq_n_u8(count, 1);
+ count = vminq_u8(count, const_4);
+ return count;
+}
+
+static INLINE void get_4_nz_map_contexts_2d(const uint8_t *levels,
+ const int width,
+ const ptrdiff_t *const offsets,
+ uint8_t *const coeff_contexts) {
+ const int stride = 4 + TX_PAD_HOR;
+ const uint8x16_t pos_to_offset_large = vdupq_n_u8(21);
+
+ uint8x16_t pos_to_offset =
+ (width == 4) ? vld1q_u8(c_4_po_2d[0]) : vld1q_u8(c_4_po_2d[1]);
+
+ uint8x16_t count;
+ uint8x16_t level[5];
+ uint8_t *cc = coeff_contexts;
+
+ assert(!(width % 4));
+
+ int col = width;
+ do {
+ load_levels_4x4x5(levels, stride, offsets, level);
+ count = get_coeff_contexts_kernel(level);
+ count = vaddq_u8(count, pos_to_offset);
+ vst1q_u8(cc, count);
+ pos_to_offset = pos_to_offset_large;
+ levels += 4 * stride;
+ cc += 16;
+ col -= 4;
+ } while (col);
+
+ coeff_contexts[0] = 0;
+}
+
+static INLINE void get_4_nz_map_contexts_ver(const uint8_t *levels,
+ const int width,
+ const ptrdiff_t *const offsets,
+ uint8_t *coeff_contexts) {
+ const int stride = 4 + TX_PAD_HOR;
+
+ const uint8x16_t pos_to_offset =
+ vreinterpretq_u8_u32(vdupq_n_u32(SIG_COEF_CONTEXTS_2D_X4_051010));
+
+ uint8x16_t count;
+ uint8x16_t level[5];
+
+ assert(!(width % 4));
+
+ int col = width;
+ do {
+ load_levels_4x4x5(levels, stride, offsets, level);
+ count = get_coeff_contexts_kernel(level);
+ count = vaddq_u8(count, pos_to_offset);
+ vst1q_u8(coeff_contexts, count);
+ levels += 4 * stride;
+ coeff_contexts += 16;
+ col -= 4;
+ } while (col);
+}
+
+static INLINE void get_4_nz_map_contexts_hor(const uint8_t *levels,
+ const int width,
+ const ptrdiff_t *const offsets,
+ uint8_t *coeff_contexts) {
+ const int stride = 4 + TX_PAD_HOR;
+ const uint8x16_t pos_to_offset_large = vdupq_n_u8(SIG_COEF_CONTEXTS_2D + 10);
+
+ uint8x16_t pos_to_offset = vld1q_u8(c_4_po_hor);
+
+ uint8x16_t count;
+ uint8x16_t level[5];
+
+ assert(!(width % 4));
+
+ int col = width;
+ do {
+ load_levels_4x4x5(levels, stride, offsets, level);
+ count = get_coeff_contexts_kernel(level);
+ count = vaddq_u8(count, pos_to_offset);
+ vst1q_u8(coeff_contexts, count);
+ pos_to_offset = pos_to_offset_large;
+ levels += 4 * stride;
+ coeff_contexts += 16;
+ col -= 4;
+ } while (col);
+}
+
+static INLINE void get_8_coeff_contexts_2d(const uint8_t *levels,
+ const int width,
+ const ptrdiff_t *const offsets,
+ uint8_t *coeff_contexts) {
+ const int stride = 8 + TX_PAD_HOR;
+ uint8_t *cc = coeff_contexts;
+ uint8x16_t count;
+ uint8x16_t level[5];
+ uint8x16_t pos_to_offset[3];
+
+ assert(!(width % 2));
+
+ if (width == 8) {
+ pos_to_offset[0] = vld1q_u8(c_8_po_2d_8[0]);
+ pos_to_offset[1] = vld1q_u8(c_8_po_2d_8[1]);
+ } else if (width < 8) {
+ pos_to_offset[0] = vld1q_u8(c_8_po_2d_l[0]);
+ pos_to_offset[1] = vld1q_u8(c_8_po_2d_l[1]);
+ } else {
+ pos_to_offset[0] = vld1q_u8(c_8_po_2d_g[0]);
+ pos_to_offset[1] = vld1q_u8(c_8_po_2d_g[1]);
+ }
+ pos_to_offset[2] = vdupq_n_u8(21);
+
+ int col = width;
+ do {
+ load_levels_8x2x5(levels, stride, offsets, level);
+ count = get_coeff_contexts_kernel(level);
+ count = vaddq_u8(count, pos_to_offset[0]);
+ vst1q_u8(cc, count);
+ pos_to_offset[0] = pos_to_offset[1];
+ pos_to_offset[1] = pos_to_offset[2];
+ levels += 2 * stride;
+ cc += 16;
+ col -= 2;
+ } while (col);
+
+ coeff_contexts[0] = 0;
+}
+
+static INLINE void get_8_coeff_contexts_ver(const uint8_t *levels,
+ const int width,
+ const ptrdiff_t *const offsets,
+ uint8_t *coeff_contexts) {
+ const int stride = 8 + TX_PAD_HOR;
+
+ const uint8x16_t pos_to_offset = vld1q_u8(c_8_po_ver);
+
+ uint8x16_t count;
+ uint8x16_t level[5];
+
+ assert(!(width % 2));
+
+ int col = width;
+ do {
+ load_levels_8x2x5(levels, stride, offsets, level);
+ count = get_coeff_contexts_kernel(level);
+ count = vaddq_u8(count, pos_to_offset);
+ vst1q_u8(coeff_contexts, count);
+ levels += 2 * stride;
+ coeff_contexts += 16;
+ col -= 2;
+ } while (col);
+}
+
+static INLINE void get_8_coeff_contexts_hor(const uint8_t *levels,
+ const int width,
+ const ptrdiff_t *const offsets,
+ uint8_t *coeff_contexts) {
+ const int stride = 8 + TX_PAD_HOR;
+ const uint8x16_t pos_to_offset_large = vdupq_n_u8(SIG_COEF_CONTEXTS_2D + 10);
+
+ uint8x16_t pos_to_offset = vcombine_u8(vdup_n_u8(SIG_COEF_CONTEXTS_2D + 0),
+ vdup_n_u8(SIG_COEF_CONTEXTS_2D + 5));
+
+ uint8x16_t count;
+ uint8x16_t level[5];
+
+ assert(!(width % 2));
+
+ int col = width;
+ do {
+ load_levels_8x2x5(levels, stride, offsets, level);
+ count = get_coeff_contexts_kernel(level);
+ count = vaddq_u8(count, pos_to_offset);
+ vst1q_u8(coeff_contexts, count);
+ pos_to_offset = pos_to_offset_large;
+ levels += 2 * stride;
+ coeff_contexts += 16;
+ col -= 2;
+ } while (col);
+}
+
+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,
+ uint8_t *coeff_contexts) {
+ const int stride = height + TX_PAD_HOR;
+ uint8_t *cc = coeff_contexts;
+ int col = width;
+ uint8x16_t pos_to_offset[5];
+ uint8x16_t pos_to_offset_large[3];
+ uint8x16_t count;
+ uint8x16_t level[5];
+
+ assert(!(height % 16));
+
+ pos_to_offset_large[2] = vdupq_n_u8(21);
+ if (real_width == real_height) {
+ pos_to_offset[0] = vld1q_u8(c_16_po_2d_e[0]);
+ pos_to_offset[1] = vld1q_u8(c_16_po_2d_e[1]);
+ pos_to_offset[2] = vld1q_u8(c_16_po_2d_e[2]);
+ pos_to_offset[3] = vld1q_u8(c_16_po_2d_e[3]);
+ 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] = vld1q_u8(c_16_po_2d_g[0]);
+ pos_to_offset[1] = vld1q_u8(c_16_po_2d_g[1]);
+ pos_to_offset[2] = pos_to_offset[3] = pos_to_offset[4] =
+ vld1q_u8(c_16_po_2d_g[2]);
+ 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] = vld1q_u8(c_16_po_2d_l[0]);
+ pos_to_offset[2] = vld1q_u8(c_16_po_2d_l[1]);
+ pos_to_offset[3] = vld1q_u8(c_16_po_2d_l[2]);
+ pos_to_offset[4] = pos_to_offset_large[2];
+ pos_to_offset_large[0] = pos_to_offset_large[1] = vdupq_n_u8(16);
+ }
+
+ do {
+ int h = height;
+
+ do {
+ load_levels_16x1x5(levels, stride, offsets, level);
+ count = get_coeff_contexts_kernel(level);
+ count = vaddq_u8(count, pos_to_offset[0]);
+ vst1q_u8(cc, count);
+ levels += 16;
+ cc += 16;
+ h -= 16;
+ pos_to_offset[0] = pos_to_offset_large[0];
+ } while (h);
+
+ 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 (--col);
+
+ coeff_contexts[0] = 0;
+}
+
+static INLINE void get_16n_coeff_contexts_ver(const uint8_t *levels,
+ const int width, const int height,
+ const ptrdiff_t *const offsets,
+ uint8_t *coeff_contexts) {
+ const int stride = height + TX_PAD_HOR;
+
+ const uint8x16_t pos_to_offset_large = vdupq_n_u8(SIG_COEF_CONTEXTS_2D + 10);
+
+ uint8x16_t count;
+ uint8x16_t level[5];
+
+ assert(!(height % 16));
+
+ int col = width;
+ do {
+ uint8x16_t pos_to_offset = vld1q_u8(c_16_po_ver);
+
+ int h = height;
+ do {
+ load_levels_16x1x5(levels, stride, offsets, level);
+ count = get_coeff_contexts_kernel(level);
+ count = vaddq_u8(count, pos_to_offset);
+ vst1q_u8(coeff_contexts, count);
+ pos_to_offset = pos_to_offset_large;
+ levels += 16;
+ coeff_contexts += 16;
+ h -= 16;
+ } while (h);
+
+ levels += TX_PAD_HOR;
+ } while (--col);
+}
+
+static INLINE void get_16n_coeff_contexts_hor(const uint8_t *levels,
+ const int width, const int height,
+ const ptrdiff_t *const offsets,
+ uint8_t *coeff_contexts) {
+ const int stride = height + TX_PAD_HOR;
+
+ uint8x16_t pos_to_offset[3];
+ uint8x16_t count;
+ uint8x16_t level[5];
+
+ assert(!(height % 16));
+
+ pos_to_offset[0] = vdupq_n_u8(SIG_COEF_CONTEXTS_2D + 0);
+ pos_to_offset[1] = vdupq_n_u8(SIG_COEF_CONTEXTS_2D + 5);
+ pos_to_offset[2] = vdupq_n_u8(SIG_COEF_CONTEXTS_2D + 10);
+
+ int col = width;
+ do {
+ int h = height;
+ do {
+ load_levels_16x1x5(levels, stride, offsets, level);
+ count = get_coeff_contexts_kernel(level);
+ count = vaddq_u8(count, pos_to_offset[0]);
+ vst1q_u8(coeff_contexts, count);
+ levels += 16;
+ coeff_contexts += 16;
+ h -= 16;
+ } while (h);
+
+ pos_to_offset[0] = pos_to_offset[1];
+ pos_to_offset[1] = pos_to_offset[2];
+ levels += TX_PAD_HOR;
+ } while (--col);
+}
+
+// Note: levels[] must be in the range [0, 127], inclusive.
+void av1_get_nz_map_contexts_neon(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;
+ }
+
+ uint8_t *const coefficients = (uint8_t *const)coeff_contexts;
+
+ 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 = height + 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 (height == 4) {
+ get_4_nz_map_contexts_2d(levels, width, offsets, coefficients);
+ } else if (height == 8) {
+ get_8_coeff_contexts_2d(levels, width, offsets, coefficients);
+ } else {
+ get_16n_coeff_contexts_2d(levels, real_width, real_height, width, height,
+ offsets, coefficients);
+ }
+ } else if (tx_class == TX_CLASS_HORIZ) {
+ offsets[0] = 2 * stride;
+ offsets[1] = 3 * stride;
+ offsets[2] = 4 * stride;
+ if (height == 4) {
+ get_4_nz_map_contexts_hor(levels, width, offsets, coefficients);
+ } else if (height == 8) {
+ get_8_coeff_contexts_hor(levels, width, offsets, coefficients);
+ } else {
+ get_16n_coeff_contexts_hor(levels, width, height, offsets, coefficients);
+ }
+ } else { // TX_CLASS_VERT
+ offsets[0] = 2;
+ offsets[1] = 3;
+ offsets[2] = 4;
+ if (height == 4) {
+ get_4_nz_map_contexts_ver(levels, width, offsets, coefficients);
+ } else if (height == 8) {
+ get_8_coeff_contexts_ver(levels, width, offsets, coefficients);
+ } else {
+ get_16n_coeff_contexts_ver(levels, width, height, offsets, coefficients);
+ }
+ }
+
+ const int bhl = get_txb_bhl(tx_size);
+ const int pos = scan[last_idx];
+ if (last_idx <= (width << bhl) / 8)
+ coeff_contexts[pos] = 1;
+ else if (last_idx <= (width << bhl) / 4)
+ coeff_contexts[pos] = 2;
+ else
+ coeff_contexts[pos] = 3;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-17 01:10:10 +0000