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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 AV1_ENCODER_FIRSTPASS_H_
+#define AV1_ENCODER_FIRSTPASS_H_
+
+#include "av1/encoder/lookahead.h"
+#include "av1/encoder/ratectrl.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if CONFIG_FP_MB_STATS
+
+#define FPMB_DCINTRA_MASK 0x01
+
+#define FPMB_MOTION_ZERO_MASK 0x02
+#define FPMB_MOTION_LEFT_MASK 0x04
+#define FPMB_MOTION_RIGHT_MASK 0x08
+#define FPMB_MOTION_UP_MASK 0x10
+#define FPMB_MOTION_DOWN_MASK 0x20
+
+#define FPMB_ERROR_SMALL_MASK 0x40
+#define FPMB_ERROR_LARGE_MASK 0x80
+#define FPMB_ERROR_SMALL_TH 2000
+#define FPMB_ERROR_LARGE_TH 48000
+
+typedef struct {
+ uint8_t *mb_stats_start;
+ uint8_t *mb_stats_end;
+} FIRSTPASS_MB_STATS;
+#endif
+
+#if CONFIG_EXT_REFS
+// Length of the bi-predictive frame group (BFG)
+// NOTE: Currently each BFG contains one backward ref (BWF) frame plus a certain
+// number of bi-predictive frames.
+#define BFG_INTERVAL 2
+// The maximum number of extra ALT_REF's
+// NOTE: This number cannot be greater than 2 or the reference frame buffer will
+// overflow.
+#define MAX_EXT_ARFS 2
+#define MIN_EXT_ARF_INTERVAL 4
+#endif // CONFIG_EXT_REFS
+
+#define VLOW_MOTION_THRESHOLD 950
+
+typedef struct {
+ double frame;
+ double weight;
+ double intra_error;
+ double coded_error;
+ double sr_coded_error;
+ double pcnt_inter;
+ double pcnt_motion;
+ double pcnt_second_ref;
+ double pcnt_neutral;
+ double intra_skip_pct;
+ double inactive_zone_rows; // Image mask rows top and bottom.
+ double inactive_zone_cols; // Image mask columns at left and right edges.
+ double MVr;
+ double mvr_abs;
+ double MVc;
+ double mvc_abs;
+ double MVrv;
+ double MVcv;
+ double mv_in_out_count;
+ double new_mv_count;
+ double duration;
+ double count;
+} FIRSTPASS_STATS;
+
+typedef enum {
+ KF_UPDATE = 0,
+ LF_UPDATE = 1,
+ GF_UPDATE = 2,
+ ARF_UPDATE = 3,
+ OVERLAY_UPDATE = 4,
+#if CONFIG_EXT_REFS
+ BRF_UPDATE = 5, // Backward Reference Frame
+ LAST_BIPRED_UPDATE = 6, // Last Bi-predictive Frame
+ BIPRED_UPDATE = 7, // Bi-predictive Frame, but not the last one
+ INTNL_OVERLAY_UPDATE = 8, // Internal Overlay Frame
+ FRAME_UPDATE_TYPES = 9
+#else
+ FRAME_UPDATE_TYPES = 5
+#endif // CONFIG_EXT_REFS
+} FRAME_UPDATE_TYPE;
+
+#define FC_ANIMATION_THRESH 0.15
+typedef enum {
+ FC_NORMAL = 0,
+ FC_GRAPHICS_ANIMATION = 1,
+ FRAME_CONTENT_TYPES = 2
+} FRAME_CONTENT_TYPE;
+
+typedef struct {
+ unsigned char index;
+ RATE_FACTOR_LEVEL rf_level[(MAX_LAG_BUFFERS * 2) + 1];
+ FRAME_UPDATE_TYPE update_type[(MAX_LAG_BUFFERS * 2) + 1];
+ unsigned char arf_src_offset[(MAX_LAG_BUFFERS * 2) + 1];
+ unsigned char arf_update_idx[(MAX_LAG_BUFFERS * 2) + 1];
+ unsigned char arf_ref_idx[(MAX_LAG_BUFFERS * 2) + 1];
+#if CONFIG_EXT_REFS
+ unsigned char brf_src_offset[(MAX_LAG_BUFFERS * 2) + 1];
+ unsigned char bidir_pred_enabled[(MAX_LAG_BUFFERS * 2) + 1];
+#endif // CONFIG_EXT_REFS
+ int bit_allocation[(MAX_LAG_BUFFERS * 2) + 1];
+} GF_GROUP;
+
+typedef struct {
+ unsigned int section_intra_rating;
+ FIRSTPASS_STATS total_stats;
+ FIRSTPASS_STATS this_frame_stats;
+ const FIRSTPASS_STATS *stats_in;
+ const FIRSTPASS_STATS *stats_in_start;
+ const FIRSTPASS_STATS *stats_in_end;
+ FIRSTPASS_STATS total_left_stats;
+ int first_pass_done;
+ int64_t bits_left;
+ double modified_error_min;
+ double modified_error_max;
+ double modified_error_left;
+ double mb_av_energy;
+
+#if CONFIG_FP_MB_STATS
+ uint8_t *frame_mb_stats_buf;
+ uint8_t *this_frame_mb_stats;
+ FIRSTPASS_MB_STATS firstpass_mb_stats;
+#endif
+ // An indication of the content type of the current frame
+ FRAME_CONTENT_TYPE fr_content_type;
+
+ // Projected total bits available for a key frame group of frames
+ int64_t kf_group_bits;
+
+ // Error score of frames still to be coded in kf group
+ int64_t kf_group_error_left;
+
+ // The fraction for a kf groups total bits allocated to the inter frames
+ double kfgroup_inter_fraction;
+
+ int sr_update_lag;
+
+ int kf_zeromotion_pct;
+ int last_kfgroup_zeromotion_pct;
+ int gf_zeromotion_pct;
+ int active_worst_quality;
+ int baseline_active_worst_quality;
+ int extend_minq;
+ int extend_maxq;
+ int extend_minq_fast;
+
+ GF_GROUP gf_group;
+} TWO_PASS;
+
+struct AV1_COMP;
+
+void av1_init_first_pass(struct AV1_COMP *cpi);
+void av1_rc_get_first_pass_params(struct AV1_COMP *cpi);
+void av1_first_pass(struct AV1_COMP *cpi, const struct lookahead_entry *source);
+void av1_end_first_pass(struct AV1_COMP *cpi);
+
+void av1_init_second_pass(struct AV1_COMP *cpi);
+void av1_rc_get_second_pass_params(struct AV1_COMP *cpi);
+void av1_twopass_postencode_update(struct AV1_COMP *cpi);
+
+// Post encode update of the rate control parameters for 2-pass
+void av1_twopass_postencode_update(struct AV1_COMP *cpi);
+
+void av1_init_subsampling(struct AV1_COMP *cpi);
+
+void av1_calculate_coded_size(struct AV1_COMP *cpi, int *scaled_frame_width,
+ int *scaled_frame_height);
+
+#if CONFIG_EXT_REFS
+static INLINE int get_number_of_extra_arfs(int interval, int arf_pending) {
+ if (arf_pending && MAX_EXT_ARFS > 0)
+ return interval >= MIN_EXT_ARF_INTERVAL * (MAX_EXT_ARFS + 1)
+ ? MAX_EXT_ARFS
+ : interval >= MIN_EXT_ARF_INTERVAL * MAX_EXT_ARFS
+ ? MAX_EXT_ARFS - 1
+ : 0;
+ else
+ return 0;
+}
+#endif // CONFIG_EXT_REFS
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif // AV1_ENCODER_FIRSTPASS_H_