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, 212 insertions, 0 deletions

diff --git a/media/libaom/src/av1/common/entropymode.h b/media/libaom/src/av1/common/entropymode.h
new file mode 100644
index 000000000..7047f34d2
--- /dev/null
+++ b/media/libaom/src/av1/common/entropymode.h
@@ -0,0 +1,212 @@
+/*
+ * 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.
+ */
+
+#ifndef AOM_AV1_COMMON_ENTROPYMODE_H_
+#define AOM_AV1_COMMON_ENTROPYMODE_H_
+
+#include "av1/common/entropy.h"
+#include "av1/common/entropymv.h"
+#include "av1/common/filter.h"
+#include "av1/common/seg_common.h"
+#include "aom_dsp/aom_filter.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define BLOCK_SIZE_GROUPS 4
+
+#define TX_SIZE_CONTEXTS 3
+
+#define INTER_OFFSET(mode) ((mode)-NEARESTMV)
+#define INTER_COMPOUND_OFFSET(mode) (uint8_t)((mode)-NEAREST_NEARESTMV)
+
+// Number of possible contexts for a color index.
+// As can be seen from av1_get_palette_color_index_context(), the possible
+// contexts are (2,0,0), (2,2,1), (3,2,0), (4,1,0), (5,0,0). These are mapped to
+// a value from 0 to 4 using 'palette_color_index_context_lookup' table.
+#define PALETTE_COLOR_INDEX_CONTEXTS 5
+
+// Palette Y mode context for a block is determined by number of neighboring
+// blocks (top and/or left) using a palette for Y plane. So, possible Y mode'
+// context values are:
+// 0 if neither left nor top block uses palette for Y plane,
+// 1 if exactly one of left or top block uses palette for Y plane, and
+// 2 if both left and top blocks use palette for Y plane.
+#define PALETTE_Y_MODE_CONTEXTS 3
+
+// Palette UV mode context for a block is determined by whether this block uses
+// palette for the Y plane. So, possible values are:
+// 0 if this block doesn't use palette for Y plane.
+// 1 if this block uses palette for Y plane (i.e. Y palette size > 0).
+#define PALETTE_UV_MODE_CONTEXTS 2
+
+// Map the number of pixels in a block size to a context
+//   64(BLOCK_8X8, BLOCK_4x16, BLOCK_16X4)  -> 0
+//  128(BLOCK_8X16, BLOCK_16x8)             -> 1
+//   ...
+// 4096(BLOCK_64X64)                        -> 6
+#define PALATTE_BSIZE_CTXS 7
+
+#define KF_MODE_CONTEXTS 5
+
+struct AV1Common;
+
+typedef struct {
+  const int16_t *scan;
+  const int16_t *iscan;
+  const int16_t *neighbors;
+} SCAN_ORDER;
+
+typedef struct frame_contexts {
+  aom_cdf_prob txb_skip_cdf[TX_SIZES][TXB_SKIP_CONTEXTS][CDF_SIZE(2)];
+  aom_cdf_prob eob_extra_cdf[TX_SIZES][PLANE_TYPES][EOB_COEF_CONTEXTS]
+                            [CDF_SIZE(2)];
+  aom_cdf_prob dc_sign_cdf[PLANE_TYPES][DC_SIGN_CONTEXTS][CDF_SIZE(2)];
+  aom_cdf_prob eob_flag_cdf16[PLANE_TYPES][2][CDF_SIZE(5)];
+  aom_cdf_prob eob_flag_cdf32[PLANE_TYPES][2][CDF_SIZE(6)];
+  aom_cdf_prob eob_flag_cdf64[PLANE_TYPES][2][CDF_SIZE(7)];
+  aom_cdf_prob eob_flag_cdf128[PLANE_TYPES][2][CDF_SIZE(8)];
+  aom_cdf_prob eob_flag_cdf256[PLANE_TYPES][2][CDF_SIZE(9)];
+  aom_cdf_prob eob_flag_cdf512[PLANE_TYPES][2][CDF_SIZE(10)];
+  aom_cdf_prob eob_flag_cdf1024[PLANE_TYPES][2][CDF_SIZE(11)];
+  aom_cdf_prob coeff_base_eob_cdf[TX_SIZES][PLANE_TYPES][SIG_COEF_CONTEXTS_EOB]
+                                 [CDF_SIZE(3)];
+  aom_cdf_prob coeff_base_cdf[TX_SIZES][PLANE_TYPES][SIG_COEF_CONTEXTS]
+                             [CDF_SIZE(4)];
+  aom_cdf_prob coeff_br_cdf[TX_SIZES][PLANE_TYPES][LEVEL_CONTEXTS]
+                           [CDF_SIZE(BR_CDF_SIZE)];
+
+  aom_cdf_prob newmv_cdf[NEWMV_MODE_CONTEXTS][CDF_SIZE(2)];
+  aom_cdf_prob zeromv_cdf[GLOBALMV_MODE_CONTEXTS][CDF_SIZE(2)];
+  aom_cdf_prob refmv_cdf[REFMV_MODE_CONTEXTS][CDF_SIZE(2)];
+  aom_cdf_prob drl_cdf[DRL_MODE_CONTEXTS][CDF_SIZE(2)];
+
+  aom_cdf_prob inter_compound_mode_cdf[INTER_MODE_CONTEXTS]
+                                      [CDF_SIZE(INTER_COMPOUND_MODES)];
+  aom_cdf_prob compound_type_cdf[BLOCK_SIZES_ALL][CDF_SIZE(COMPOUND_TYPES - 1)];
+  aom_cdf_prob wedge_idx_cdf[BLOCK_SIZES_ALL][CDF_SIZE(16)];
+  aom_cdf_prob interintra_cdf[BLOCK_SIZE_GROUPS][CDF_SIZE(2)];
+  aom_cdf_prob wedge_interintra_cdf[BLOCK_SIZES_ALL][CDF_SIZE(2)];
+  aom_cdf_prob interintra_mode_cdf[BLOCK_SIZE_GROUPS]
+                                  [CDF_SIZE(INTERINTRA_MODES)];
+  aom_cdf_prob motion_mode_cdf[BLOCK_SIZES_ALL][CDF_SIZE(MOTION_MODES)];
+  aom_cdf_prob obmc_cdf[BLOCK_SIZES_ALL][CDF_SIZE(2)];
+  aom_cdf_prob palette_y_size_cdf[PALATTE_BSIZE_CTXS][CDF_SIZE(PALETTE_SIZES)];
+  aom_cdf_prob palette_uv_size_cdf[PALATTE_BSIZE_CTXS][CDF_SIZE(PALETTE_SIZES)];
+  aom_cdf_prob palette_y_color_index_cdf[PALETTE_SIZES]
+                                        [PALETTE_COLOR_INDEX_CONTEXTS]
+                                        [CDF_SIZE(PALETTE_COLORS)];
+  aom_cdf_prob palette_uv_color_index_cdf[PALETTE_SIZES]
+                                         [PALETTE_COLOR_INDEX_CONTEXTS]
+                                         [CDF_SIZE(PALETTE_COLORS)];
+  aom_cdf_prob palette_y_mode_cdf[PALATTE_BSIZE_CTXS][PALETTE_Y_MODE_CONTEXTS]
+                                 [CDF_SIZE(2)];
+  aom_cdf_prob palette_uv_mode_cdf[PALETTE_UV_MODE_CONTEXTS][CDF_SIZE(2)];
+  aom_cdf_prob comp_inter_cdf[COMP_INTER_CONTEXTS][CDF_SIZE(2)];
+  aom_cdf_prob single_ref_cdf[REF_CONTEXTS][SINGLE_REFS - 1][CDF_SIZE(2)];
+  aom_cdf_prob comp_ref_type_cdf[COMP_REF_TYPE_CONTEXTS][CDF_SIZE(2)];
+  aom_cdf_prob uni_comp_ref_cdf[UNI_COMP_REF_CONTEXTS][UNIDIR_COMP_REFS - 1]
+                               [CDF_SIZE(2)];
+  aom_cdf_prob comp_ref_cdf[REF_CONTEXTS][FWD_REFS - 1][CDF_SIZE(2)];
+  aom_cdf_prob comp_bwdref_cdf[REF_CONTEXTS][BWD_REFS - 1][CDF_SIZE(2)];
+  aom_cdf_prob txfm_partition_cdf[TXFM_PARTITION_CONTEXTS][CDF_SIZE(2)];
+  aom_cdf_prob compound_index_cdf[COMP_INDEX_CONTEXTS][CDF_SIZE(2)];
+  aom_cdf_prob comp_group_idx_cdf[COMP_GROUP_IDX_CONTEXTS][CDF_SIZE(2)];
+  aom_cdf_prob skip_mode_cdfs[SKIP_CONTEXTS][CDF_SIZE(2)];
+  aom_cdf_prob skip_cdfs[SKIP_CONTEXTS][CDF_SIZE(2)];
+  aom_cdf_prob intra_inter_cdf[INTRA_INTER_CONTEXTS][CDF_SIZE(2)];
+  nmv_context nmvc;
+  nmv_context ndvc;
+  aom_cdf_prob intrabc_cdf[CDF_SIZE(2)];
+  struct segmentation_probs seg;
+  aom_cdf_prob filter_intra_cdfs[BLOCK_SIZES_ALL][CDF_SIZE(2)];
+  aom_cdf_prob filter_intra_mode_cdf[CDF_SIZE(FILTER_INTRA_MODES)];
+  aom_cdf_prob switchable_restore_cdf[CDF_SIZE(RESTORE_SWITCHABLE_TYPES)];
+  aom_cdf_prob wiener_restore_cdf[CDF_SIZE(2)];
+  aom_cdf_prob sgrproj_restore_cdf[CDF_SIZE(2)];
+  aom_cdf_prob y_mode_cdf[BLOCK_SIZE_GROUPS][CDF_SIZE(INTRA_MODES)];
+  aom_cdf_prob uv_mode_cdf[CFL_ALLOWED_TYPES][INTRA_MODES]
+                          [CDF_SIZE(UV_INTRA_MODES)];
+  aom_cdf_prob partition_cdf[PARTITION_CONTEXTS][CDF_SIZE(EXT_PARTITION_TYPES)];
+  aom_cdf_prob switchable_interp_cdf[SWITCHABLE_FILTER_CONTEXTS]
+                                    [CDF_SIZE(SWITCHABLE_FILTERS)];
+  /* kf_y_cdf is discarded after use, so does not require persistent storage.
+     However, we keep it with the other CDFs in this struct since it needs to
+     be copied to each tile to support parallelism just like the others.
+  */
+  aom_cdf_prob kf_y_cdf[KF_MODE_CONTEXTS][KF_MODE_CONTEXTS]
+                       [CDF_SIZE(INTRA_MODES)];
+
+  aom_cdf_prob angle_delta_cdf[DIRECTIONAL_MODES]
+                              [CDF_SIZE(2 * MAX_ANGLE_DELTA + 1)];
+
+  aom_cdf_prob tx_size_cdf[MAX_TX_CATS][TX_SIZE_CONTEXTS]
+                          [CDF_SIZE(MAX_TX_DEPTH + 1)];
+  aom_cdf_prob delta_q_cdf[CDF_SIZE(DELTA_Q_PROBS + 1)];
+  aom_cdf_prob delta_lf_multi_cdf[FRAME_LF_COUNT][CDF_SIZE(DELTA_LF_PROBS + 1)];
+  aom_cdf_prob delta_lf_cdf[CDF_SIZE(DELTA_LF_PROBS + 1)];
+  aom_cdf_prob intra_ext_tx_cdf[EXT_TX_SETS_INTRA][EXT_TX_SIZES][INTRA_MODES]
+                               [CDF_SIZE(TX_TYPES)];
+  aom_cdf_prob inter_ext_tx_cdf[EXT_TX_SETS_INTER][EXT_TX_SIZES]
+                               [CDF_SIZE(TX_TYPES)];
+  aom_cdf_prob cfl_sign_cdf[CDF_SIZE(CFL_JOINT_SIGNS)];
+  aom_cdf_prob cfl_alpha_cdf[CFL_ALPHA_CONTEXTS][CDF_SIZE(CFL_ALPHABET_SIZE)];
+  int initialized;
+} FRAME_CONTEXT;
+
+static const int av1_ext_tx_ind[EXT_TX_SET_TYPES][TX_TYPES] = {
+  { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
+  { 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
+  { 1, 3, 4, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
+  { 1, 5, 6, 4, 0, 0, 0, 0, 0, 0, 2, 3, 0, 0, 0, 0 },
+  { 3, 4, 5, 8, 6, 7, 9, 10, 11, 0, 1, 2, 0, 0, 0, 0 },
+  { 7, 8, 9, 12, 10, 11, 13, 14, 15, 0, 1, 2, 3, 4, 5, 6 },
+};
+
+static const int av1_ext_tx_inv[EXT_TX_SET_TYPES][TX_TYPES] = {
+  { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
+  { 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
+  { 9, 0, 3, 1, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
+  { 9, 0, 10, 11, 3, 1, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
+  { 9, 10, 11, 0, 1, 2, 4, 5, 3, 6, 7, 8, 0, 0, 0, 0 },
+  { 9, 10, 11, 12, 13, 14, 15, 0, 1, 2, 4, 5, 3, 6, 7, 8 },
+};
+
+void av1_set_default_ref_deltas(int8_t *ref_deltas);
+void av1_set_default_mode_deltas(int8_t *mode_deltas);
+void av1_setup_frame_contexts(struct AV1Common *cm);
+void av1_setup_past_independence(struct AV1Common *cm);
+
+// Returns (int)ceil(log2(n)).
+// NOTE: This implementation only works for n <= 2^30.
+static INLINE int av1_ceil_log2(int n) {
+  if (n < 2) return 0;
+  int i = 1, p = 2;
+  while (p < n) {
+    i++;
+    p = p << 1;
+  }
+  return i;
+}
+
+// Returns the context for palette color index at row 'r' and column 'c',
+// along with the 'color_order' of neighbors and the 'color_idx'.
+// The 'color_map' is a 2D array with the given 'stride'.
+int av1_get_palette_color_index_context(const uint8_t *color_map, int stride,
+                                        int r, int c, int palette_size,
+                                        uint8_t *color_order, int *color_idx);
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+
+#endif  // AOM_AV1_COMMON_ENTROPYMODE_H_