Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 332 insertions, 0 deletions

diff --git a/third_party/aom/av1/encoder/aq_cyclicrefresh.h b/third_party/aom/av1/encoder/aq_cyclicrefresh.h
new file mode 100644
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+++ b/third_party/aom/av1/encoder/aq_cyclicrefresh.h
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+/*
+ * 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_ENCODER_AQ_CYCLICREFRESH_H_
+#define AOM_AV1_ENCODER_AQ_CYCLICREFRESH_H_
+
+#include "av1/common/blockd.h"
+#include "av1/encoder/block.h"
+#include "av1/encoder/tokenize.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// The segment ids used in cyclic refresh: from base (no boost) to increasing
+// boost (higher delta-qp).
+#define CR_SEGMENT_ID_BASE 0
+#define CR_SEGMENT_ID_BOOST1 1
+#define CR_SEGMENT_ID_BOOST2 2
+
+// Maximum rate target ratio for setting segment delta-qp.
+#define CR_MAX_RATE_TARGET_RATIO 4.0
+
+/*!
+ * \brief The stucture of CYCLIC_REFRESH.
+ * \ingroup cyclic_refresh
+ */
+struct CYCLIC_REFRESH {
+  /*!
+   * Percentage of blocks per frame that are targeted as candidates
+   * for cyclic refresh.
+   */
+  int percent_refresh;
+
+  /*!
+   * Active adjustment delta for cyclic refresh for rate control.
+   */
+  int percent_refresh_adjustment;
+
+  /*!
+   * Maximum q-delta as percentage of base q.
+   */
+  int max_qdelta_perc;
+  /*!
+   *Superblock starting index for cycling through the frame.
+   */
+  int sb_index;
+  /*!
+   *Superblock index cyclic refresh index last frame
+   */
+  int last_sb_index;
+  /*!
+   * Controls how long block will need to wait to be refreshed again, in
+   * excess of the cycle time, i.e., in the case of all zero motion, block
+   * will be refreshed every (100/percent_refresh + time_for_refresh) frames.
+   */
+  int time_for_refresh;
+  /*!
+   * Target number of (4x4) blocks that are set for delta-q.
+   */
+  int target_num_seg_blocks;
+  /*!
+   * Actual number of (4x4) blocks that were applied delta-q,
+   * for segment 1.
+   */
+  int actual_num_seg1_blocks;
+  /*!
+   * Actual number of (4x4) blocks that were applied delta-q,
+   * for segment 2.
+   */
+  int actual_num_seg2_blocks;
+  /*!
+   * RD mult. parameters for segment 1.
+   */
+  int rdmult;
+  /*!
+   * Cyclic refresh map.
+   */
+  int8_t *map;
+  /*!
+   * Threshold applied to the projected rate of the coding block,
+   * when deciding whether block should be refreshed.
+   */
+  int64_t thresh_rate_sb;
+  /*!
+   * Threshold applied to the projected distortion of the coding block,
+   * when deciding whether block should be refreshed.
+   */
+  int64_t thresh_dist_sb;
+  /*!
+   * Threshold applied to the motion vector (in units of 1/8 pel) of the
+   * coding block, when deciding whether block should be refreshed.
+   */
+  int16_t motion_thresh;
+  /*!
+   * Rate target ratio to set q delta.
+   */
+  double rate_ratio_qdelta;
+
+  /*!
+   * Active adjustment of qdelta rate ratio for enhanced rate control
+   */
+  double rate_ratio_qdelta_adjustment;
+
+  /*!
+   * Boost factor for rate target ratio, for segment CR_SEGMENT_ID_BOOST2.
+   */
+  int rate_boost_fac;
+
+  /*!\cond */
+  int qindex_delta[3];
+  int apply_cyclic_refresh;
+  int skip_over4x4;
+  int counter_encode_maxq_scene_change;
+  int use_block_sad_scene_det;
+  /*!\endcond */
+};
+
+struct AV1_COMP;
+
+typedef struct CYCLIC_REFRESH CYCLIC_REFRESH;
+
+CYCLIC_REFRESH *av1_cyclic_refresh_alloc(int mi_rows, int mi_cols);
+
+void av1_cyclic_refresh_free(CYCLIC_REFRESH *cr);
+
+/*!\brief Estimate the bits, incorporating the delta-q from the segments.
+ *
+ * For the just encoded frame, estimate the bits, incorporating the delta-q
+ * from non-base segment(s). Note this function is called in the postencode
+ * (called from rc_update_rate_correction_factors()).
+ *
+ * \ingroup cyclic_refresh
+ * \callgraph
+ * \callergraph
+ *
+ * \param[in]       cpi               Top level encoder structure
+ * \param[in]       correction_factor rate correction factor
+ *
+ * \return Return the estimated bits at given q.
+ */
+int av1_cyclic_refresh_estimate_bits_at_q(const struct AV1_COMP *cpi,
+                                          double correction_factor);
+
+/*!\brief Estimate the bits per mb, for given q = i and delta-q.
+ *
+ * Prior to encoding the frame, estimate the bits per mb, for a given q = i and
+ * a corresponding delta-q (for segment 1). This function is called in the
+ * rc_regulate_q() to set the base qp index. Note: the segment map is set to
+ * either 0/CR_SEGMENT_ID_BASE (no refresh) or to 1/CR_SEGMENT_ID_BOOST1
+ * (refresh) for each superblock, prior to encoding.
+ *
+ * \ingroup cyclic_refresh
+ * \callgraph
+ * \callergraph
+ *
+ * \param[in]       cpi               Top level encoder structure
+ * \param[in]       i                 q index
+ * \param[in]       correction_factor rate correction factor
+ *
+ * \return Return the estimated bits for q = i and delta-q (segment 1).
+ */
+int av1_cyclic_refresh_rc_bits_per_mb(const struct AV1_COMP *cpi, int i,
+                                      double correction_factor);
+
+/*!\brief Update segment_id for blocks are skipped.
+ *
+ * After encoding a given prediction block, of size bsize at (mi_row, mi_col),
+ * check if we should reset the segment_id based on skip_txfm,
+ * and update the cyclic_refresh map and segmentation counters.
+ *
+ * \ingroup cyclic_refresh
+ * \callgraph
+ * \callergraph
+ *
+ * \param[in]   cpi       Top level encoder structure
+ * \param[in]   x         Pointer to MACROBLOCK structure
+ * \param[in]   mi_row    Row coordinate of the block in a step size of MI_SIZE
+ * \param[in]   mi_col    Col coordinate of the block in a step size of MI_SIZE
+ * \param[in]   bsize     Block size
+ * \param[in]   dry_run   A code indicating whether it is part of the final
+ *                        pass for reconstructing the superblock
+ *
+ * \remark Update the \c mbmi->segment_id, the \c cpi->cyclic_refresh and
+ * the \c cm->cpi->enc_seg.map.
+ */
+
+void av1_cyclic_reset_segment_skip(const struct AV1_COMP *cpi,
+                                   MACROBLOCK *const x, int mi_row, int mi_col,
+                                   BLOCK_SIZE bsize, RUN_TYPE dry_run);
+
+/*!\brief Update segment_id for block based on mode selected.
+ *
+ * Prior to coding a given prediction block, of size bsize at (mi_row, mi_col),
+ * check if we should reset the segment_id (based on mode/motion/skip selected
+ * for that block) and update the cyclic_refresh map and segmentation map.
+ *
+ * \ingroup cyclic_refresh
+ * \callgraph
+ * \callergraph
+ *
+ * \param[in]   cpi       Top level encoder structure
+ * \param[in]   x         Pointer to MACROBLOCK structure
+ * \param[in]   mi_row    Row coordinate of the block in a step size of MI_SIZE
+ * \param[in]   mi_col    Col coordinate of the block in a step size of MI_SIZE
+ * \param[in]   bsize     Block size
+ * \param[in]   rate      Projected block rate from pickmode
+ * \param[in]   dist      Projected block dist from pickmode
+ * \param[in]   skip      Skip flag set from picmode
+ * \param[in]   dry_run   A code indicating whether it is part of the final
+ *                         pass for reconstructing the superblock
+ *
+ * \remark Update the \c mbmi->segment_id, the \c cpi->cyclic_refresh and
+ * the \c cm->cpi->enc_seg.map.
+ */
+void av1_cyclic_refresh_update_segment(const struct AV1_COMP *cpi,
+                                       MACROBLOCK *const x, int mi_row,
+                                       int mi_col, BLOCK_SIZE bsize,
+                                       int64_t rate, int64_t dist, int skip,
+                                       RUN_TYPE dry_run);
+
+/*!\brief Initialize counters used for cyclic refresh.
+ *
+ * Initializes cyclic refresh counters actual_num_seg1_blocks and
+ * actual_num_seg2_blocks.
+ *
+ * \ingroup cyclic_refresh
+ * \callgraph
+ * \callergraph
+ *
+ * \param[in]   x         Pointer to MACROBLOCK structure
+ *
+ * \remark Update the \c x->actual_num_seg1_blocks and the
+ * \c x->actual_num_seg2_blocks.
+ */
+void av1_init_cyclic_refresh_counters(MACROBLOCK *const x);
+
+/*!\brief Accumulate cyclic refresh counters.
+ *
+ * Accumulates cyclic refresh counters actual_num_seg1_blocks and
+ * actual_num_seg2_blocks from MACROBLOCK strcture to CYCLIC_REFRESH strcture.
+ *
+ * \ingroup cyclic_refresh
+ * \callgraph
+ * \callergraph
+ *
+ * \param[in]   cyclic_refresh Pointer to CYCLIC_REFRESH structure
+ * \param[in]   x              Pointer to MACROBLOCK structure
+ *
+ * \remark Update the \c cyclic_refresh->actual_num_seg1_blocks and the
+ * \c cyclic_refresh->actual_num_seg2_blocks.
+ */
+void av1_accumulate_cyclic_refresh_counters(
+    CYCLIC_REFRESH *const cyclic_refresh, const MACROBLOCK *const x);
+
+/*!\brief Set golden frame update interval nased on cyclic refresh.
+ *
+ * \ingroup cyclic_refresh
+ * \callgraph
+ * \callergraph
+ *
+ * \param[in]   cpi       Top level encoder structure
+ *
+ * \remark Returns the interval in \c cpi->rc.baseline_gf_interval.
+ */
+void av1_cyclic_refresh_set_golden_update(struct AV1_COMP *const cpi);
+
+/*!\brief Set the global/frame level parameters for cyclic refresh.
+ *
+ * First call to the cyclic refresh, before encoding the frame.
+ * Sets the flag on whether cyclic refresh should be applied, sets
+ * the amount/percent of refresh, and the amount of boost applied to
+ * the two segments (set by rate_ratio_qdelta and rate_boost_fac).
+ *
+ * \ingroup cyclic_refresh
+ * \callgraph
+ * \callergraph
+ *
+ * \param[in]       cpi          Top level encoder structure
+ *
+ * \remark Updates the \c cpi->cyclic_refresh with the settings.
+ */
+void av1_cyclic_refresh_update_parameters(struct AV1_COMP *const cpi);
+
+/*!\brief Setup the cyclic background refresh.
+ *
+ * Set the delta q for the segment(s), and set the segmentation map.
+ *
+ * \ingroup cyclic_refresh
+ * \callgraph
+ * \callergraph
+ *
+ * \param[in]       cpi          Top level encoder structure
+ *
+ * \remark Updates the \c cpi->cyclic_refresh with the cyclic refresh
+ * parameters and the \c cm->seg with the segmentation data.
+ */
+void av1_cyclic_refresh_setup(struct AV1_COMP *const cpi);
+
+int av1_cyclic_refresh_get_rdmult(const CYCLIC_REFRESH *cr);
+
+void av1_cyclic_refresh_reset_resize(struct AV1_COMP *const cpi);
+
+int av1_cyclic_refresh_disable_lf_cdef(struct AV1_COMP *const cpi);
+
+static INLINE int cyclic_refresh_segment_id_boosted(int segment_id) {
+  return segment_id == CR_SEGMENT_ID_BOOST1 ||
+         segment_id == CR_SEGMENT_ID_BOOST2;
+}
+
+static INLINE int cyclic_refresh_segment_id(int segment_id) {
+  if (segment_id == CR_SEGMENT_ID_BOOST1)
+    return CR_SEGMENT_ID_BOOST1;
+  else if (segment_id == CR_SEGMENT_ID_BOOST2)
+    return CR_SEGMENT_ID_BOOST2;
+  else
+    return CR_SEGMENT_ID_BASE;
+}
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+
+#endif  // AOM_AV1_ENCODER_AQ_CYCLICREFRESH_H_