mpegvideo: Move MotionEstContext and function declarations to a separate header

1 files changed, 128 insertions, 0 deletions

diff --git a/libavcodec/motion_est.h b/libavcodec/motion_est.h
new file mode 100644
index 0000000000..cbfbbe8176
--- /dev/null
+++ b/libavcodec/motion_est.h
@@ -0,0 +1,128 @@
+/*
+ * Motion estimation
+ *
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVCODEC_MOTIONEST_H
+#define AVCODEC_MOTIONEST_H
+
+#include <stdint.h>
+
+#include "avcodec.h"
+#include "hpeldsp.h"
+#include "qpeldsp.h"
+
+struct MpegEncContext;
+
+#define MAX_MV 2048
+
+/**
+ * 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 */
+    int mc_mb_var_sum_temp;
+    int 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_MV * 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);
+
+extern const uint8_t ff_aic_dc_scale_table[32];
+extern const uint8_t ff_h263_chroma_qscale_table[32];
+
+#endif /* AVCODEC_MOTIONEST_H */