Move aom source to a sub-directory under media/libaom

There is no damned reason to treat this differently than any other media lib given its license and there never was.

1 files changed, 0 insertions, 424 deletions

diff --git a/third_party/aom/av1/common/txb_common.h b/third_party/aom/av1/common/txb_common.h
deleted file mode 100644
index 1dda51f8b..000000000
--- a/third_party/aom/av1/common/txb_common.h
+++ /dev/null
@@ -1,424 +0,0 @@
-/*
- * 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.
- */
-
-#ifndef AOM_AV1_COMMON_TXB_COMMON_H_
-#define AOM_AV1_COMMON_TXB_COMMON_H_
-
-extern const int16_t k_eob_group_start[12];
-extern const int16_t k_eob_offset_bits[12];
-
-extern const int8_t av1_coeff_band_4x4[16];
-
-extern const int8_t av1_coeff_band_8x8[64];
-
-extern const int8_t av1_coeff_band_16x16[256];
-
-extern const int8_t av1_coeff_band_32x32[1024];
-
-extern const int8_t *av1_nz_map_ctx_offset[TX_SIZES_ALL];
-
-typedef struct txb_ctx {
-  int txb_skip_ctx;
-  int dc_sign_ctx;
-} TXB_CTX;
-
-static const int base_level_count_to_index[13] = {
-  0, 0, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3,
-};
-
-static const TX_CLASS tx_type_to_class[TX_TYPES] = {
-  TX_CLASS_2D,     // DCT_DCT
-  TX_CLASS_2D,     // ADST_DCT
-  TX_CLASS_2D,     // DCT_ADST
-  TX_CLASS_2D,     // ADST_ADST
-  TX_CLASS_2D,     // FLIPADST_DCT
-  TX_CLASS_2D,     // DCT_FLIPADST
-  TX_CLASS_2D,     // FLIPADST_FLIPADST
-  TX_CLASS_2D,     // ADST_FLIPADST
-  TX_CLASS_2D,     // FLIPADST_ADST
-  TX_CLASS_2D,     // IDTX
-  TX_CLASS_VERT,   // V_DCT
-  TX_CLASS_HORIZ,  // H_DCT
-  TX_CLASS_VERT,   // V_ADST
-  TX_CLASS_HORIZ,  // H_ADST
-  TX_CLASS_VERT,   // V_FLIPADST
-  TX_CLASS_HORIZ,  // H_FLIPADST
-};
-
-static INLINE int get_txb_bwl(TX_SIZE tx_size) {
-  tx_size = av1_get_adjusted_tx_size(tx_size);
-  return tx_size_wide_log2[tx_size];
-}
-
-static INLINE int get_txb_wide(TX_SIZE tx_size) {
-  tx_size = av1_get_adjusted_tx_size(tx_size);
-  return tx_size_wide[tx_size];
-}
-
-static INLINE int get_txb_high(TX_SIZE tx_size) {
-  tx_size = av1_get_adjusted_tx_size(tx_size);
-  return tx_size_high[tx_size];
-}
-
-static INLINE uint8_t *set_levels(uint8_t *const levels_buf, const int width) {
-  return levels_buf + TX_PAD_TOP * (width + TX_PAD_HOR);
-}
-
-static INLINE int get_padded_idx(const int idx, const int bwl) {
-  return idx + ((idx >> bwl) << TX_PAD_HOR_LOG2);
-}
-
-static INLINE int get_base_ctx_from_count_mag(int row, int col, int count,
-                                              int sig_mag) {
-  const int ctx = base_level_count_to_index[count];
-  int ctx_idx = -1;
-
-  if (row == 0 && col == 0) {
-    if (sig_mag >= 2) return ctx_idx = 0;
-    if (sig_mag == 1) {
-      if (count >= 2)
-        ctx_idx = 1;
-      else
-        ctx_idx = 2;
-
-      return ctx_idx;
-    }
-
-    ctx_idx = 3 + ctx;
-    assert(ctx_idx <= 6);
-    return ctx_idx;
-  } else if (row == 0) {
-    if (sig_mag >= 2) return ctx_idx = 6;
-    if (sig_mag == 1) {
-      if (count >= 2)
-        ctx_idx = 7;
-      else
-        ctx_idx = 8;
-      return ctx_idx;
-    }
-
-    ctx_idx = 9 + ctx;
-    assert(ctx_idx <= 11);
-    return ctx_idx;
-  } else if (col == 0) {
-    if (sig_mag >= 2) return ctx_idx = 12;
-    if (sig_mag == 1) {
-      if (count >= 2)
-        ctx_idx = 13;
-      else
-        ctx_idx = 14;
-
-      return ctx_idx;
-    }
-
-    ctx_idx = 15 + ctx;
-    assert(ctx_idx <= 17);
-    // TODO(angiebird): turn this on once the optimization is finalized
-    // assert(ctx_idx < 28);
-  } else {
-    if (sig_mag >= 2) return ctx_idx = 18;
-    if (sig_mag == 1) {
-      if (count >= 2)
-        ctx_idx = 19;
-      else
-        ctx_idx = 20;
-      return ctx_idx;
-    }
-
-    ctx_idx = 21 + ctx;
-
-    assert(ctx_idx <= 24);
-  }
-  return ctx_idx;
-}
-
-static INLINE int get_br_ctx_2d(const uint8_t *const levels,
-                                const int c,  // raster order
-                                const int bwl) {
-  assert(c > 0);
-  const int row = c >> bwl;
-  const int col = c - (row << bwl);
-  const int stride = (1 << bwl) + TX_PAD_HOR;
-  const int pos = row * stride + col;
-  int mag = AOMMIN(levels[pos + 1], MAX_BASE_BR_RANGE) +
-            AOMMIN(levels[pos + stride], MAX_BASE_BR_RANGE) +
-            AOMMIN(levels[pos + 1 + stride], MAX_BASE_BR_RANGE);
-  mag = AOMMIN((mag + 1) >> 1, 6);
-  //((row | col) < 2) is equivalent to ((row < 2) && (col < 2))
-  if ((row | col) < 2) return mag + 7;
-  return mag + 14;
-}
-
-static AOM_FORCE_INLINE int get_br_ctx(const uint8_t *const levels,
-                                       const int c,  // raster order
-                                       const int bwl, const TX_CLASS tx_class) {
-  const int row = c >> bwl;
-  const int col = c - (row << bwl);
-  const int stride = (1 << bwl) + TX_PAD_HOR;
-  const int pos = row * stride + col;
-  int mag = levels[pos + 1];
-  mag += levels[pos + stride];
-  switch (tx_class) {
-    case TX_CLASS_2D:
-      mag += levels[pos + stride + 1];
-      mag = AOMMIN((mag + 1) >> 1, 6);
-      if (c == 0) return mag;
-      if ((row < 2) && (col < 2)) return mag + 7;
-      break;
-    case TX_CLASS_HORIZ:
-      mag += levels[pos + 2];
-      mag = AOMMIN((mag + 1) >> 1, 6);
-      if (c == 0) return mag;
-      if (col == 0) return mag + 7;
-      break;
-    case TX_CLASS_VERT:
-      mag += levels[pos + (stride << 1)];
-      mag = AOMMIN((mag + 1) >> 1, 6);
-      if (c == 0) return mag;
-      if (row == 0) return mag + 7;
-      break;
-    default: break;
-  }
-
-  return mag + 14;
-}
-
-static const uint8_t clip_max3[256] = {
-  0, 1, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
-  3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
-  3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
-  3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
-  3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
-  3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
-  3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
-  3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
-  3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
-  3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3
-};
-
-static AOM_FORCE_INLINE int get_nz_mag(const uint8_t *const levels,
-                                       const int bwl, const TX_CLASS tx_class) {
-  int mag;
-
-  // Note: AOMMIN(level, 3) is useless for decoder since level < 3.
-  mag = clip_max3[levels[1]];                         // { 0, 1 }
-  mag += clip_max3[levels[(1 << bwl) + TX_PAD_HOR]];  // { 1, 0 }
-
-  if (tx_class == TX_CLASS_2D) {
-    mag += clip_max3[levels[(1 << bwl) + TX_PAD_HOR + 1]];          // { 1, 1 }
-    mag += clip_max3[levels[2]];                                    // { 0, 2 }
-    mag += clip_max3[levels[(2 << bwl) + (2 << TX_PAD_HOR_LOG2)]];  // { 2, 0 }
-  } else if (tx_class == TX_CLASS_VERT) {
-    mag += clip_max3[levels[(2 << bwl) + (2 << TX_PAD_HOR_LOG2)]];  // { 2, 0 }
-    mag += clip_max3[levels[(3 << bwl) + (3 << TX_PAD_HOR_LOG2)]];  // { 3, 0 }
-    mag += clip_max3[levels[(4 << bwl) + (4 << TX_PAD_HOR_LOG2)]];  // { 4, 0 }
-  } else {
-    mag += clip_max3[levels[2]];  // { 0, 2 }
-    mag += clip_max3[levels[3]];  // { 0, 3 }
-    mag += clip_max3[levels[4]];  // { 0, 4 }
-  }
-
-  return mag;
-}
-
-#define NZ_MAP_CTX_0 SIG_COEF_CONTEXTS_2D
-#define NZ_MAP_CTX_5 (NZ_MAP_CTX_0 + 5)
-#define NZ_MAP_CTX_10 (NZ_MAP_CTX_0 + 10)
-
-static const int nz_map_ctx_offset_1d[32] = {
-  NZ_MAP_CTX_0,  NZ_MAP_CTX_5,  NZ_MAP_CTX_10, NZ_MAP_CTX_10, NZ_MAP_CTX_10,
-  NZ_MAP_CTX_10, NZ_MAP_CTX_10, NZ_MAP_CTX_10, NZ_MAP_CTX_10, NZ_MAP_CTX_10,
-  NZ_MAP_CTX_10, NZ_MAP_CTX_10, NZ_MAP_CTX_10, NZ_MAP_CTX_10, NZ_MAP_CTX_10,
-  NZ_MAP_CTX_10, NZ_MAP_CTX_10, NZ_MAP_CTX_10, NZ_MAP_CTX_10, NZ_MAP_CTX_10,
-  NZ_MAP_CTX_10, NZ_MAP_CTX_10, NZ_MAP_CTX_10, NZ_MAP_CTX_10, NZ_MAP_CTX_10,
-  NZ_MAP_CTX_10, NZ_MAP_CTX_10, NZ_MAP_CTX_10, NZ_MAP_CTX_10, NZ_MAP_CTX_10,
-  NZ_MAP_CTX_10, NZ_MAP_CTX_10,
-};
-
-static AOM_FORCE_INLINE int get_nz_map_ctx_from_stats(
-    const int stats,
-    const int coeff_idx,  // raster order
-    const int bwl, const TX_SIZE tx_size, const TX_CLASS tx_class) {
-  // tx_class == 0(TX_CLASS_2D)
-  if ((tx_class | coeff_idx) == 0) return 0;
-  int ctx = (stats + 1) >> 1;
-  ctx = AOMMIN(ctx, 4);
-  switch (tx_class) {
-    case TX_CLASS_2D: {
-      // This is the algorithm to generate av1_nz_map_ctx_offset[][]
-      //   const int width = tx_size_wide[tx_size];
-      //   const int height = tx_size_high[tx_size];
-      //   if (width < height) {
-      //     if (row < 2) return 11 + ctx;
-      //   } else if (width > height) {
-      //     if (col < 2) return 16 + ctx;
-      //   }
-      //   if (row + col < 2) return ctx + 1;
-      //   if (row + col < 4) return 5 + ctx + 1;
-      //   return 21 + ctx;
-      return ctx + av1_nz_map_ctx_offset[tx_size][coeff_idx];
-    }
-    case TX_CLASS_HORIZ: {
-      const int row = coeff_idx >> bwl;
-      const int col = coeff_idx - (row << bwl);
-      return ctx + nz_map_ctx_offset_1d[col];
-      break;
-    }
-    case TX_CLASS_VERT: {
-      const int row = coeff_idx >> bwl;
-      return ctx + nz_map_ctx_offset_1d[row];
-      break;
-    }
-    default: break;
-  }
-  return 0;
-}
-
-typedef aom_cdf_prob (*base_cdf_arr)[CDF_SIZE(4)];
-typedef aom_cdf_prob (*br_cdf_arr)[CDF_SIZE(BR_CDF_SIZE)];
-
-static INLINE int get_lower_levels_ctx_eob(int bwl, int height, int scan_idx) {
-  if (scan_idx == 0) return 0;
-  if (scan_idx <= (height << bwl) / 8) return 1;
-  if (scan_idx <= (height << bwl) / 4) return 2;
-  return 3;
-}
-
-static INLINE int get_lower_levels_ctx_2d(const uint8_t *levels, int coeff_idx,
-                                          int bwl, TX_SIZE tx_size) {
-  assert(coeff_idx > 0);
-  int mag;
-  // Note: AOMMIN(level, 3) is useless for decoder since level < 3.
-  levels = levels + get_padded_idx(coeff_idx, bwl);
-  mag = AOMMIN(levels[1], 3);                                     // { 0, 1 }
-  mag += AOMMIN(levels[(1 << bwl) + TX_PAD_HOR], 3);              // { 1, 0 }
-  mag += AOMMIN(levels[(1 << bwl) + TX_PAD_HOR + 1], 3);          // { 1, 1 }
-  mag += AOMMIN(levels[2], 3);                                    // { 0, 2 }
-  mag += AOMMIN(levels[(2 << bwl) + (2 << TX_PAD_HOR_LOG2)], 3);  // { 2, 0 }
-
-  const int ctx = AOMMIN((mag + 1) >> 1, 4);
-  return ctx + av1_nz_map_ctx_offset[tx_size][coeff_idx];
-}
-static AOM_FORCE_INLINE int get_lower_levels_ctx(const uint8_t *levels,
-                                                 int coeff_idx, int bwl,
-                                                 TX_SIZE tx_size,
-                                                 TX_CLASS tx_class) {
-  const int stats =
-      get_nz_mag(levels + get_padded_idx(coeff_idx, bwl), bwl, tx_class);
-  return get_nz_map_ctx_from_stats(stats, coeff_idx, bwl, tx_size, tx_class);
-}
-
-static INLINE int get_lower_levels_ctx_general(int is_last, int scan_idx,
-                                               int bwl, int height,
-                                               const uint8_t *levels,
-                                               int coeff_idx, TX_SIZE tx_size,
-                                               TX_CLASS tx_class) {
-  if (is_last) {
-    if (scan_idx == 0) return 0;
-    if (scan_idx <= (height << bwl) >> 3) return 1;
-    if (scan_idx <= (height << bwl) >> 2) return 2;
-    return 3;
-  }
-  return get_lower_levels_ctx(levels, coeff_idx, bwl, tx_size, tx_class);
-}
-
-static INLINE void set_dc_sign(int *cul_level, int dc_val) {
-  if (dc_val < 0)
-    *cul_level |= 1 << COEFF_CONTEXT_BITS;
-  else if (dc_val > 0)
-    *cul_level += 2 << COEFF_CONTEXT_BITS;
-}
-
-static INLINE void get_txb_ctx(const BLOCK_SIZE plane_bsize,
-                               const TX_SIZE tx_size, const int plane,
-                               const ENTROPY_CONTEXT *const a,
-                               const ENTROPY_CONTEXT *const l,
-                               TXB_CTX *const txb_ctx) {
-#define MAX_TX_SIZE_UNIT 16
-  static const int8_t signs[3] = { 0, -1, 1 };
-  static const int8_t dc_sign_contexts[4 * MAX_TX_SIZE_UNIT + 1] = {
-    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2
-  };
-  const int txb_w_unit = tx_size_wide_unit[tx_size];
-  const int txb_h_unit = tx_size_high_unit[tx_size];
-  int dc_sign = 0;
-  int k = 0;
-
-  do {
-    const unsigned int sign = ((uint8_t)a[k]) >> COEFF_CONTEXT_BITS;
-    assert(sign <= 2);
-    dc_sign += signs[sign];
-  } while (++k < txb_w_unit);
-
-  k = 0;
-  do {
-    const unsigned int sign = ((uint8_t)l[k]) >> COEFF_CONTEXT_BITS;
-    assert(sign <= 2);
-    dc_sign += signs[sign];
-  } while (++k < txb_h_unit);
-
-  txb_ctx->dc_sign_ctx = dc_sign_contexts[dc_sign + 2 * MAX_TX_SIZE_UNIT];
-
-  if (plane == 0) {
-    if (plane_bsize == txsize_to_bsize[tx_size]) {
-      txb_ctx->txb_skip_ctx = 0;
-    } else {
-      // This is the algorithm to generate table skip_contexts[min][max].
-      //    if (!max)
-      //      txb_skip_ctx = 1;
-      //    else if (!min)
-      //      txb_skip_ctx = 2 + (max > 3);
-      //    else if (max <= 3)
-      //      txb_skip_ctx = 4;
-      //    else if (min <= 3)
-      //      txb_skip_ctx = 5;
-      //    else
-      //      txb_skip_ctx = 6;
-      static const uint8_t skip_contexts[5][5] = { { 1, 2, 2, 2, 3 },
-                                                   { 1, 4, 4, 4, 5 },
-                                                   { 1, 4, 4, 4, 5 },
-                                                   { 1, 4, 4, 4, 5 },
-                                                   { 1, 4, 4, 4, 6 } };
-      int top = 0;
-      int left = 0;
-
-      k = 0;
-      do {
-        top |= a[k];
-      } while (++k < txb_w_unit);
-      top &= COEFF_CONTEXT_MASK;
-
-      k = 0;
-      do {
-        left |= l[k];
-      } while (++k < txb_h_unit);
-      left &= COEFF_CONTEXT_MASK;
-      const int max = AOMMIN(top | left, 4);
-      const int min = AOMMIN(AOMMIN(top, left), 4);
-
-      txb_ctx->txb_skip_ctx = skip_contexts[min][max];
-    }
-  } else {
-    const int ctx_base = get_entropy_context(tx_size, a, l);
-    const int ctx_offset = (num_pels_log2_lookup[plane_bsize] >
-                            num_pels_log2_lookup[txsize_to_bsize[tx_size]])
-                               ? 10
-                               : 7;
-    txb_ctx->txb_skip_ctx = ctx_base + ctx_offset;
-  }
-#undef MAX_TX_SIZE_UNIT
-}
-
-void av1_init_lv_map(AV1_COMMON *cm);
-
-#endif  // AOM_AV1_COMMON_TXB_COMMON_H_