doc/filters: Documentation to add sess_config option for tensorflow backend

[ffmpeg] / libavcodec / ituh263enc.c

diff --git a/libavcodec/ituh263enc.c b/libavcodec/ituh263enc.c
index ee09f2974c207c09bda062c9d15f3c5fa2e4456b..79c8c9999eafe0deaed56c2897aa34e48ae71498 100644 (file)
--- a/libavcodec/ituh263enc.c
+++ b/libavcodec/ituh263enc.c
@@ -30,6 +30,7 @@
 #include <limits.h>
 
 #include "libavutil/attributes.h"
+#include "libavutil/thread.h"
 #include "avcodec.h"
 #include "mpegvideo.h"
 #include "mpegvideodata.h"
@@ -124,7 +125,7 @@ void ff_h263_encode_picture_header(MpegEncContext * s, int picture_number)
     coded_frame_rate= 1800000;
     coded_frame_rate_base= (1000+best_clock_code)*best_divisor;
 
-    avpriv_align_put_bits(&s->pb);
+    align_put_bits(&s->pb);
 
     /* Update the pointer to last GOB */
     s->ptr_lastgob = put_bits_ptr(&s->pb);
@@ -671,7 +672,7 @@ void ff_h263_encode_motion(PutBitContext *pb, int val, int f_code)
     }
 }
 
-static av_cold void init_mv_penalty_and_fcode(MpegEncContext *s)
+static av_cold void init_mv_penalty_and_fcode(void)
 {
     int f_code;
     int mv;
@@ -713,8 +714,7 @@ static av_cold void init_mv_penalty_and_fcode(MpegEncContext *s)
     }
 }
 
-static av_cold void init_uni_h263_rl_tab(RLTable *rl, uint32_t *bits_tab,
-                                         uint8_t *len_tab)
+static av_cold void init_uni_h263_rl_tab(const RLTable *rl, uint8_t *len_tab)
 {
     int slevel, run, last;
 
@@ -738,10 +738,9 @@ static av_cold void init_uni_h263_rl_tab(RLTable *rl, uint32_t *bits_tab,
                 len=  rl->table_vlc[code][1];
                 bits=bits*2+sign; len++;
 
-                if(code!=rl->n && len < len_tab[index]){
-                    if(bits_tab) bits_tab[index]= bits;
+                if (code != rl->n && len < len_tab[index])
                     len_tab [index]= len;
-                }
+
                 /* ESC */
                 bits= rl->table_vlc[rl->n][0];
                 len = rl->table_vlc[rl->n][1];
@@ -749,30 +748,30 @@ static av_cold void init_uni_h263_rl_tab(RLTable *rl, uint32_t *bits_tab,
                 bits=bits*64+run; len+=6;
                 bits=bits*256+(level&0xff); len+=8;
 
-                if(len < len_tab[index]){
-                    if(bits_tab) bits_tab[index]= bits;
+                if (len < len_tab[index])
                     len_tab [index]= len;
-                }
             }
         }
     }
 }
 
-av_cold void ff_h263_encode_init(MpegEncContext *s)
+static av_cold void h263_encode_init_static(void)
 {
-    static int done = 0;
+    static uint8_t rl_intra_table[2][2 * MAX_RUN + MAX_LEVEL + 3];
+
+    ff_rl_init(&ff_rl_intra_aic, rl_intra_table);
+    ff_h263_init_rl_inter();
 
-    if (!done) {
-        done = 1;
+    init_uni_h263_rl_tab(&ff_rl_intra_aic,  uni_h263_intra_aic_rl_len);
+    init_uni_h263_rl_tab(&ff_h263_rl_inter, uni_h263_inter_rl_len);
 
-        ff_rl_init(&ff_h263_rl_inter, ff_h263_static_rl_table_store[0]);
-        ff_rl_init(&ff_rl_intra_aic, ff_h263_static_rl_table_store[1]);
+    init_mv_penalty_and_fcode();
+}
 
-        init_uni_h263_rl_tab(&ff_rl_intra_aic, NULL, uni_h263_intra_aic_rl_len);
-        init_uni_h263_rl_tab(&ff_h263_rl_inter    , NULL, uni_h263_inter_rl_len);
+av_cold void ff_h263_encode_init(MpegEncContext *s)
+{
+    static AVOnce init_static_once = AV_ONCE_INIT;
 
-        init_mv_penalty_and_fcode(s);
-    }
     s->me.mv_penalty= mv_penalty; // FIXME exact table for MSMPEG4 & H.263+
 
     s->intra_ac_vlc_length     =s->inter_ac_vlc_length     = uni_h263_inter_rl_len;
@@ -820,6 +819,8 @@ av_cold void ff_h263_encode_init(MpegEncContext *s)
         s->y_dc_scale_table=
         s->c_dc_scale_table= ff_mpeg1_dc_scale_table;
     }
+
+    ff_thread_once(&init_static_once, h263_encode_init_static);
 }
 
 void ff_h263_encode_mba(MpegEncContext *s)