vidstab*: Remove accidentally exported av_2_vs_pixel_format()

Also correctly namespace other functions in vidstabutils, and decrease
difference from Libav.

Initial-patch-by: Vittorio Giovara <vittorio.giovara@gmail.com>
Signed-off-by: Timothy Gu <timothygu99@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavfilter/vf_vidstabdetect.c

@@ -63,7 +63,7 @@ AVFILTER_DEFINE_CLASS(vidstabdetect);
 static av_cold int init(AVFilterContext *ctx)
 {
     StabData *sd = ctx->priv;
-    vs_set_mem_and_log_functions();
+    ff_vs_init();
     sd->class = &vidstabdetect_class;
     av_log(ctx, AV_LOG_VERBOSE, "vidstabdetect filter: init %s\n", LIBVIDSTAB_VERSION);
     return 0;
@@ -106,7 +106,8 @@ static int config_input(AVFilterLink *inlink)
     VSFrameInfo fi;
     const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
 
-    vsFrameInfoInit(&fi, inlink->w, inlink->h, av_2_vs_pixel_format(ctx, inlink->format));
+    vsFrameInfoInit(&fi, inlink->w, inlink->h,
+                    ff_av2vs_pixfmt(ctx, inlink->format));
     if (fi.bytesPerPixel != av_get_bits_per_pixel(desc)/8) {
         av_log(ctx, AV_LOG_ERROR, "pixel-format error: wrong bits/per/pixel, please report a BUG");
         return AVERROR(EINVAL);

libavfilter/vf_vidstabtransform.c

@@ -107,7 +107,7 @@ AVFILTER_DEFINE_CLASS(vidstabtransform);
 static av_cold int init(AVFilterContext *ctx)
 {
     TransformContext *tc = ctx->priv;
-    vs_set_mem_and_log_functions();
+    ff_vs_init();
     tc->class = &vidstabtransform_class;
     av_log(ctx, AV_LOG_VERBOSE, "vidstabtransform filter: init %s\n", LIBVIDSTAB_VERSION);
     return 0;
@@ -151,9 +151,9 @@ static int config_input(AVFilterLink *inlink)
     VSFrameInfo fi_dest;
 
     if (!vsFrameInfoInit(&fi_src, inlink->w, inlink->h,
-                         av_2_vs_pixel_format(ctx, inlink->format)) ||
+                         ff_av2vs_pixfmt(ctx, inlink->format)) ||
         !vsFrameInfoInit(&fi_dest, inlink->w, inlink->h,
-                         av_2_vs_pixel_format(ctx, inlink->format))) {
+                         ff_av2vs_pixfmt(ctx, inlink->format))) {
         av_log(ctx, AV_LOG_ERROR, "unknown pixel format: %i (%s)",
                inlink->format, desc->name);
         return AVERROR(EINVAL);

libavfilter/vidstabutils.c

@@ -21,7 +21,7 @@
 #include "vidstabutils.h"
 
 /** convert AV's pixelformat to vid.stab pixelformat */
-VSPixelFormat av_2_vs_pixel_format(AVFilterContext *ctx, enum AVPixelFormat pf)
+VSPixelFormat ff_av2vs_pixfmt(AVFilterContext *ctx, enum AVPixelFormat pf)
 {
     switch (pf) {
     case AV_PIX_FMT_YUV420P:  return PF_YUV420P;
@@ -47,7 +47,7 @@ typedef struct {
 } VS2AVLogCtx;
 
 /** wrapper to log vs_log into av_log */
-static int vs_2_av_log_wrapper(int type, const char *tag, const char *format, ...)
+static int vs2av_log(int type, const char *tag, const char *format, ...)
 {
     va_list ap;
     VS2AVLogCtx ctx;
@@ -66,7 +66,7 @@ static int vs_2_av_log_wrapper(int type, const char *tag, const char *format, ..
 }
 
 /** sets the memory allocation function and logging constants to av versions */
-void vs_set_mem_and_log_functions(void)
+void ff_vs_init(void)
 {
     vs_malloc  = av_malloc;
     vs_zalloc  = av_mallocz;
@@ -78,7 +78,7 @@ void vs_set_mem_and_log_functions(void)
     VS_INFO_TYPE  = AV_LOG_INFO;
     VS_MSG_TYPE   = AV_LOG_VERBOSE;
 
-    vs_log   = vs_2_av_log_wrapper;
+    vs_log   = vs2av_log;
 
     VS_ERROR = 0;
     VS_OK    = 1;

libavfilter/vidstabutils.h

@@ -28,9 +28,9 @@
 /* ** some conversions from avlib to vid.stab constants and functions *** */
 
 /** converts the pixelformat of avlib into the one of the vid.stab library */
-VSPixelFormat av_2_vs_pixel_format(AVFilterContext *ctx, enum AVPixelFormat pf);
+VSPixelFormat ff_av2vs_pixfmt(AVFilterContext *ctx, enum AVPixelFormat pf);
 
 /** sets the memory allocation function and logging constants to av versions */
-void vs_set_mem_and_log_functions(void);
+void ff_vs_init(void);
 
 #endif