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-rw-r--r--media/ffvpx/libavcodec/motion_est.h135
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diff --git a/media/ffvpx/libavcodec/motion_est.h b/media/ffvpx/libavcodec/motion_est.h
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+/*
+ * Motion estimation
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVCODEC_MOTION_EST_H
+#define AVCODEC_MOTION_EST_H
+
+#include <stdint.h>
+
+#include "avcodec.h"
+#include "hpeldsp.h"
+#include "qpeldsp.h"
+
+struct MpegEncContext;
+
+#if ARCH_IA64 // Limit static arrays to avoid gcc failing "short data segment overflowed"
+#define MAX_MV 1024
+#else
+#define MAX_MV 4096
+#endif
+#define MAX_DMV (2*MAX_MV)
+#define ME_MAP_SIZE 64
+
+#define FF_ME_ZERO 0
+#define FF_ME_EPZS 1
+#define FF_ME_XONE 2
+
+/**
+ * Motion estimation context.
+ */
+typedef struct MotionEstContext {
+ AVCodecContext *avctx;
+ int skip; ///< set if ME is skipped for the current MB
+ int co_located_mv[4][2]; ///< mv from last P-frame for direct mode ME
+ int direct_basis_mv[4][2];
+ uint8_t *scratchpad; /**< data area for the ME algo, so that
+ * the ME does not need to malloc/free. */
+ uint8_t *best_mb;
+ uint8_t *temp_mb[2];
+ uint8_t *temp;
+ int best_bits;
+ uint32_t *map; ///< map to avoid duplicate evaluations
+ uint32_t *score_map; ///< map to store the scores
+ unsigned map_generation;
+ int pre_penalty_factor;
+ int penalty_factor; /**< an estimate of the bits required to
+ * code a given mv value, e.g. (1,0) takes
+ * more bits than (0,0). We have to
+ * estimate whether any reduction in
+ * residual is worth the extra bits. */
+ int sub_penalty_factor;
+ int mb_penalty_factor;
+ int flags;
+ int sub_flags;
+ int mb_flags;
+ int pre_pass; ///< = 1 for the pre pass
+ int dia_size;
+ int xmin;
+ int xmax;
+ int ymin;
+ int ymax;
+ int pred_x;
+ int pred_y;
+ uint8_t *src[4][4];
+ uint8_t *ref[4][4];
+ int stride;
+ int uvstride;
+ /* temp variables for picture complexity calculation */
+ int64_t mc_mb_var_sum_temp;
+ int64_t mb_var_sum_temp;
+ int scene_change_score;
+
+ op_pixels_func(*hpel_put)[4];
+ op_pixels_func(*hpel_avg)[4];
+ qpel_mc_func(*qpel_put)[16];
+ qpel_mc_func(*qpel_avg)[16];
+ uint8_t (*mv_penalty)[MAX_DMV * 2 + 1]; ///< bit amount needed to encode a MV
+ uint8_t *current_mv_penalty;
+ int (*sub_motion_search)(struct MpegEncContext *s,
+ int *mx_ptr, int *my_ptr, int dmin,
+ int src_index, int ref_index,
+ int size, int h);
+} MotionEstContext;
+
+static inline int ff_h263_round_chroma(int x)
+{
+ //FIXME static or not?
+ static const uint8_t h263_chroma_roundtab[16] = {
+ // 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
+ 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1,
+ };
+ return h263_chroma_roundtab[x & 0xf] + (x >> 3);
+}
+
+int ff_init_me(struct MpegEncContext *s);
+
+void ff_estimate_p_frame_motion(struct MpegEncContext *s, int mb_x, int mb_y);
+void ff_estimate_b_frame_motion(struct MpegEncContext *s, int mb_x, int mb_y);
+
+int ff_pre_estimate_p_frame_motion(struct MpegEncContext *s,
+ int mb_x, int mb_y);
+
+int ff_epzs_motion_search(struct MpegEncContext *s, int *mx_ptr, int *my_ptr,
+ int P[10][2], int src_index, int ref_index,
+ int16_t (*last_mv)[2], int ref_mv_scale, int size,
+ int h);
+
+int ff_get_mb_score(struct MpegEncContext *s, int mx, int my, int src_index,
+ int ref_index, int size, int h, int add_rate);
+
+int ff_get_best_fcode(struct MpegEncContext *s,
+ int16_t (*mv_table)[2], int type);
+
+void ff_fix_long_p_mvs(struct MpegEncContext *s);
+void ff_fix_long_mvs(struct MpegEncContext *s, uint8_t *field_select_table,
+ int field_select, int16_t (*mv_table)[2], int f_code,
+ int type, int truncate);
+
+#endif /* AVCODEC_MOTION_EST_H */