1 files changed, 134 insertions, 0 deletions
diff --git a/third_party/aom/av1/encoder/av1_temporal_denoiser.h b/third_party/aom/av1/encoder/av1_temporal_denoiser.h
new file mode 100644
index 0000000000..14dcccce69
--- /dev/null
+++ b/third_party/aom/av1/encoder/av1_temporal_denoiser.h
@@ -0,0 +1,134 @@
+/*
+ * Copyright (c) 2020, 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_AV1_TEMPORAL_DENOISER_H_
+#define AOM_AV1_ENCODER_AV1_TEMPORAL_DENOISER_H_
+
+#include "av1/encoder/block.h"
+#include "aom_scale/yv12config.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define MOTION_MAGNITUDE_THRESHOLD (8 * 3)
+
+// Denoiser is used in non svc real-time mode which does not use alt-ref, so no
+// need to allocate for it, and hence we need MAX_REF_FRAME - 1
+#define NONSVC_REF_FRAMES REF_FRAMES - 1
+
+// Number of frame buffers when SVC is used. [0] for current denoised buffer and
+// [1..8] for REF_FRAMES
+#define SVC_REF_FRAMES 9
+
+typedef enum av1_denoiser_decision {
+  COPY_BLOCK,
+  FILTER_BLOCK,
+  FILTER_ZEROMV_BLOCK
+} AV1_DENOISER_DECISION;
+
+typedef enum av1_denoiser_level {
+  kDenLowLow,
+  kDenLow,
+  kDenMedium,
+  kDenHigh
+} AV1_DENOISER_LEVEL;
+
+typedef struct av1_denoiser {
+  YV12_BUFFER_CONFIG *running_avg_y;
+  YV12_BUFFER_CONFIG *mc_running_avg_y;
+  YV12_BUFFER_CONFIG last_source;
+  int frame_buffer_initialized;
+  int reset;
+  int num_ref_frames;
+  int num_layers;
+  unsigned int current_denoiser_frame;
+  AV1_DENOISER_LEVEL denoising_level;
+  AV1_DENOISER_LEVEL prev_denoising_level;
+} AV1_DENOISER;
+
+typedef struct {
+  int64_t zero_last_cost_orig;
+  unsigned int *ref_frame_cost;
+  int_mv (*frame_mv)[REF_FRAMES];
+  int reuse_inter_pred;
+  TX_SIZE best_tx_size;
+  PREDICTION_MODE best_mode;
+  MV_REFERENCE_FRAME best_ref_frame;
+  int_interpfilters best_pred_filter;
+  uint8_t best_mode_skip_txfm;
+} AV1_PICKMODE_CTX_DEN;
+
+struct AV1_COMP;
+struct SVC;
+struct RTC_REF;
+
+void av1_denoiser_update_frame_info(
+    AV1_DENOISER *denoiser, YV12_BUFFER_CONFIG src, struct RTC_REF *rtc_ref,
+    struct SVC *svc, FRAME_TYPE frame_type, int refresh_alt_ref_frame,
+    int refresh_golden_frame, int refresh_last_frame, int alt_fb_idx,
+    int gld_fb_idx, int lst_fb_idx, int resized,
+    int svc_refresh_denoiser_buffers, int second_spatial_layer);
+
+void av1_denoiser_denoise(struct AV1_COMP *cpi, MACROBLOCK *mb, int mi_row,
+                          int mi_col, BLOCK_SIZE bs, PICK_MODE_CONTEXT *ctx,
+                          AV1_DENOISER_DECISION *denoiser_decision,
+                          int use_gf_temporal_ref);
+
+void av1_denoiser_reset_frame_stats(PICK_MODE_CONTEXT *ctx);
+
+void av1_denoiser_update_frame_stats(MB_MODE_INFO *mi, int64_t sse,
+                                     PREDICTION_MODE mode,
+                                     PICK_MODE_CONTEXT *ctx);
+
+int av1_denoiser_realloc_svc(AV1_COMMON *cm, AV1_DENOISER *denoiser,
+                             struct RTC_REF *rtc, struct SVC *svc,
+                             int svc_buf_shift, int refresh_alt,
+                             int refresh_gld, int refresh_lst, int alt_fb_idx,
+                             int gld_fb_idx, int lst_fb_idx);
+
+int av1_denoiser_alloc(AV1_COMMON *cm, struct SVC *svc, AV1_DENOISER *denoiser,
+                       int use_svc, int noise_sen, int width, int height,
+                       int ssx, int ssy, int use_highbitdepth, int border);
+
+#if CONFIG_AV1_TEMPORAL_DENOISING
+// This function is used by both c and sse2 denoiser implementations.
+// Define it as a static function within the scope where av1_denoiser.h
+// is referenced.
+static INLINE int total_adj_strong_thresh(BLOCK_SIZE bs,
+                                          int increase_denoising) {
+  return (1 << num_pels_log2_lookup[bs]) * (increase_denoising ? 3 : 2);
+}
+#endif
+
+void av1_denoiser_free(AV1_DENOISER *denoiser);
+
+void av1_denoiser_set_noise_level(struct AV1_COMP *const cpi, int noise_level);
+
+void av1_denoiser_reset_on_first_frame(struct AV1_COMP *const cpi);
+
+int64_t av1_scale_part_thresh(int64_t threshold, AV1_DENOISER_LEVEL noise_level,
+                              CONTENT_STATE_SB content_state,
+                              int temporal_layer_id);
+
+int64_t av1_scale_acskip_thresh(int64_t threshold,
+                                AV1_DENOISER_LEVEL noise_level, int abs_sumdiff,
+                                int temporal_layer_id);
+
+void av1_denoiser_update_ref_frame(struct AV1_COMP *const cpi);
+
+void aom_write_yuv_frame(FILE *yuv_file, YV12_BUFFER_CONFIG *s);
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+
+#endif  // AOM_AV1_ENCODER_AV1_TEMPORAL_DENOISER_H_