lavc/elbg: rename ff_ symbols to avpriv_, so they can be used in shared libs

In particular, allows the use of elbg in other FFmpeg libraries, required
by the pending elbg filter.

libavcodec/a64multienc.c

@@ -338,8 +338,8 @@ static int a64multi_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
             buf = pkt->data;
 
             /* calc optimal new charset + charmaps */
-            ff_init_elbg(meta, 32, 1000 * c->mc_lifetime, best_cb, CHARSET_CHARS, 50, charmap, &c->randctx);
-            ff_do_elbg  (meta, 32, 1000 * c->mc_lifetime, best_cb, CHARSET_CHARS, 50, charmap, &c->randctx);
+            avpriv_init_elbg(meta, 32, 1000 * c->mc_lifetime, best_cb, CHARSET_CHARS, 50, charmap, &c->randctx);
+            avpriv_do_elbg  (meta, 32, 1000 * c->mc_lifetime, best_cb, CHARSET_CHARS, 50, charmap, &c->randctx);
 
             /* create colorram map and a c64 readable charset */
             render_charset(avctx, charset, colram);

libavcodec/elbg.c

@@ -324,7 +324,7 @@ static void do_shiftings(elbg_data *elbg)
 
 #define BIG_PRIME 433494437LL
 
-void ff_init_elbg(int *points, int dim, int numpoints, int *codebook,
+void avpriv_init_elbg(int *points, int dim, int numpoints, int *codebook,
                   int numCB, int max_steps, int *closest_cb,
                   AVLFG *rand_state)
 {
@@ -339,8 +339,8 @@ void ff_init_elbg(int *points, int dim, int numpoints, int *codebook,
             memcpy(temp_points + i*dim, points + k*dim, dim*sizeof(int));
         }
 
-        ff_init_elbg(temp_points, dim, numpoints/8, codebook, numCB, 2*max_steps, closest_cb, rand_state);
-        ff_do_elbg(temp_points, dim, numpoints/8, codebook, numCB, 2*max_steps, closest_cb, rand_state);
+        avpriv_init_elbg(temp_points, dim, numpoints/8, codebook, numCB, 2*max_steps, closest_cb, rand_state);
+        avpriv_do_elbg(temp_points, dim, numpoints/8, codebook, numCB, 2*max_steps, closest_cb, rand_state);
 
         av_free(temp_points);
 
@@ -351,7 +351,7 @@ void ff_init_elbg(int *points, int dim, int numpoints, int *codebook,
 
 }
 
-void ff_do_elbg(int *points, int dim, int numpoints, int *codebook,
+void avpriv_do_elbg(int *points, int dim, int numpoints, int *codebook,
                 int numCB, int max_steps, int *closest_cb,
                 AVLFG *rand_state)
 {

libavcodec/elbg.h

@@ -37,7 +37,7 @@
  * @param closest_cb Return the closest codebook to each point. Must be allocated.
  * @param rand_state A random number generator state. Should be already initialized by av_lfg_init().
  */
-void ff_do_elbg(int *points, int dim, int numpoints, int *codebook,
+void avpriv_do_elbg(int *points, int dim, int numpoints, int *codebook,
                 int numCB, int num_steps, int *closest_cb,
                 AVLFG *rand_state);
 
@@ -45,10 +45,10 @@ void ff_do_elbg(int *points, int dim, int numpoints, int *codebook,
  * Initialize the **codebook vector for the elbg algorithm. If you have already
  * a codebook and you want to refine it, you shouldn't call this function.
  * If numpoints < 8*numCB this function fills **codebook with random numbers.
- * If not, it calls ff_do_elbg for a (smaller) random sample of the points in
- * **points. Get the same parameters as ff_do_elbg.
+ * If not, it calls avpriv_do_elbg for a (smaller) random sample of the points in
+ * **points. Get the same parameters as avpriv_do_elbg.
  */
-void ff_init_elbg(int *points, int dim, int numpoints, int *codebook,
+void avpriv_init_elbg(int *points, int dim, int numpoints, int *codebook,
                   int numCB, int num_steps, int *closest_cb,
                   AVLFG *rand_state);
 

libavcodec/msvideo1enc.c

@@ -118,8 +118,8 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
             }
             // try to find optimal value to fill whole 4x4 block
             score = 0;
-            ff_init_elbg(c->block, 3, 16, c->avg, 1, 1, c->output, &c->rnd);
-            ff_do_elbg  (c->block, 3, 16, c->avg, 1, 1, c->output, &c->rnd);
+            avpriv_init_elbg(c->block, 3, 16, c->avg, 1, 1, c->output, &c->rnd);
+            avpriv_do_elbg  (c->block, 3, 16, c->avg, 1, 1, c->output, &c->rnd);
             if(c->avg[0] == 1) // red component = 1 will be written as skip code
                 c->avg[0] = 0;
             for(j = 0; j < 4; j++){
@@ -138,8 +138,8 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
             }
             // search for optimal filling of 2-color block
             score = 0;
-            ff_init_elbg(c->block, 3, 16, c->codebook, 2, 1, c->output, &c->rnd);
-            ff_do_elbg  (c->block, 3, 16, c->codebook, 2, 1, c->output, &c->rnd);
+            avpriv_init_elbg(c->block, 3, 16, c->codebook, 2, 1, c->output, &c->rnd);
+            avpriv_do_elbg  (c->block, 3, 16, c->codebook, 2, 1, c->output, &c->rnd);
             // last output value should be always 1, swap codebooks if needed
             if(!c->output[15]){
                 for(i = 0; i < 3; i++)
@@ -164,8 +164,8 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
             // search for optimal filling of 2-color 2x2 subblocks
             score = 0;
             for(i = 0; i < 4; i++){
-                ff_init_elbg(c->block2 + i*4*3, 3, 4, c->codebook2 + i*2*3, 2, 1, c->output2 + i*4, &c->rnd);
-                ff_do_elbg  (c->block2 + i*4*3, 3, 4, c->codebook2 + i*2*3, 2, 1, c->output2 + i*4, &c->rnd);
+                avpriv_init_elbg(c->block2 + i*4*3, 3, 4, c->codebook2 + i*2*3, 2, 1, c->output2 + i*4, &c->rnd);
+                avpriv_do_elbg  (c->block2 + i*4*3, 3, 4, c->codebook2 + i*2*3, 2, 1, c->output2 + i*4, &c->rnd);
             }
             // last value should be always 1, swap codebooks if needed
             if(!c->output2[15]){

libavcodec/roqvideoenc.c

@@ -806,8 +806,8 @@ static void generate_codebook(RoqContext *enc, RoqTempdata *tempdata,
     else
         closest_cb = tempdata->closest_cb2;
 
-    ff_init_elbg(points, 6*c_size, inputCount, codebook, cbsize, 1, closest_cb, &enc->randctx);
-    ff_do_elbg(points, 6*c_size, inputCount, codebook, cbsize, 1, closest_cb, &enc->randctx);
+    avpriv_init_elbg(points, 6*c_size, inputCount, codebook, cbsize, 1, closest_cb, &enc->randctx);
+    avpriv_do_elbg(points, 6*c_size, inputCount, codebook, cbsize, 1, closest_cb, &enc->randctx);
 
     if (size == 4)
         av_free(closest_cb);

libavcodec/version.h

@@ -30,7 +30,7 @@
 
 #define LIBAVCODEC_VERSION_MAJOR 55
 #define LIBAVCODEC_VERSION_MINOR  41
-#define LIBAVCODEC_VERSION_MICRO 100
+#define LIBAVCODEC_VERSION_MICRO 101
 
 #define LIBAVCODEC_VERSION_INT  AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
                                                LIBAVCODEC_VERSION_MINOR, \