imgconvert: add avcodec_find_best_pix_fmt_of_2()

and deprecate avcodec_find_best_pix_fmt2()
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/avcodec.h

@@ -4512,7 +4512,7 @@ int avcodec_get_pix_fmt_loss(enum PixelFormat dst_pix_fmt, enum PixelFormat src_
 
 #if FF_API_FIND_BEST_PIX_FMT
 /**
- * @deprecated use avcodec_find_best_pix_fmt2() instead.
+ * @deprecated use avcodec_find_best_pix_fmt_of_2() instead.
  *
  * Find the best pixel format to convert to given a certain source pixel
  * format.  When converting from one pixel format to another, information loss
@@ -4547,7 +4547,7 @@ enum PixelFormat avcodec_find_best_pix_fmt(int64_t pix_fmt_mask, enum PixelForma
  * format.  When converting from one pixel format to another, information loss
  * may occur.  For example, when converting from RGB24 to GRAY, the color
  * information will be lost. Similarly, other losses occur when converting from
- * some formats to other formats. avcodec_find_best_pix_fmt2() searches which of
+ * some formats to other formats. avcodec_find_best_pix_fmt_of_2() searches which of
  * the given pixel formats should be used to suffer the least amount of loss.
  * The pixel formats from which it chooses one, are determined by the
  * pix_fmt_list parameter.
@@ -4568,7 +4568,7 @@ enum PixelFormat avcodec_find_best_pix_fmt_of_list(enum PixelFormat *pix_fmt_lis
  * format and a selection of two destination pixel formats. When converting from
  * one pixel format to another, information loss may occur.  For example, when converting
  * from RGB24 to GRAY, the color information will be lost. Similarly, other losses occur when
- * converting from some formats to other formats. avcodec_find_best_pix_fmt2() selects which of
+ * converting from some formats to other formats. avcodec_find_best_pix_fmt_of_2() selects which of
  * the given pixel formats should be used to suffer the least amount of loss.
  *
  * If one of the destination formats is PIX_FMT_NONE the other pixel format (if valid) will be
@@ -4580,8 +4580,8 @@ enum PixelFormat avcodec_find_best_pix_fmt_of_list(enum PixelFormat *pix_fmt_lis
  * dst_pix_fmt2= PIX_FMT_GRAY8;
  * dst_pix_fmt3= PIX_FMT_RGB8;
  * loss= FF_LOSS_CHROMA; // don't care about chroma loss, so chroma loss will be ignored.
- * dst_pix_fmt = avcodec_find_best_pix_fmt2(dst_pix_fmt1, dst_pix_fmt2, src_pix_fmt, alpha, &loss);
- * dst_pix_fmt = avcodec_find_best_pix_fmt2(dst_pix_fmt, dst_pix_fmt3, src_pix_fmt, alpha, &loss);
+ * dst_pix_fmt = avcodec_find_best_pix_fmt_of_2(dst_pix_fmt1, dst_pix_fmt2, src_pix_fmt, alpha, &loss);
+ * dst_pix_fmt = avcodec_find_best_pix_fmt_of_2(dst_pix_fmt, dst_pix_fmt3, src_pix_fmt, alpha, &loss);
  * @endcode
  *
  * @param[in] dst_pix_fmt1 One of the two destination pixel formats to choose from
@@ -4593,6 +4593,10 @@ enum PixelFormat avcodec_find_best_pix_fmt_of_list(enum PixelFormat *pix_fmt_lis
  *                               that occurs when converting from src to selected dst pixel format.
  * @return The best pixel format to convert to or -1 if none was found.
  */
+enum PixelFormat avcodec_find_best_pix_fmt_of_2(enum PixelFormat dst_pix_fmt1, enum PixelFormat dst_pix_fmt2,
+                                            enum PixelFormat src_pix_fmt, int has_alpha, int *loss_ptr);
+
+attribute_deprecated
 enum PixelFormat avcodec_find_best_pix_fmt2(enum PixelFormat dst_pix_fmt1, enum PixelFormat dst_pix_fmt2,
                                             enum PixelFormat src_pix_fmt, int has_alpha, int *loss_ptr);
 

libavcodec/imgconvert.c

@@ -529,13 +529,13 @@ enum PixelFormat avcodec_find_best_pix_fmt(int64_t pix_fmt_mask, enum PixelForma
     dst_pix_fmt = PIX_FMT_NONE; /* so first iteration doesn't have to be treated special */
     for(i = 0; i< FFMIN(PIX_FMT_NB, 64); i++){
         if (pix_fmt_mask & (1ULL << i))
-            dst_pix_fmt = avcodec_find_best_pix_fmt2(dst_pix_fmt, i, src_pix_fmt, has_alpha, loss_ptr);
+            dst_pix_fmt = avcodec_find_best_pix_fmt_of_2(dst_pix_fmt, i, src_pix_fmt, has_alpha, loss_ptr);
     }
     return dst_pix_fmt;
 }
 #endif /* FF_API_FIND_BEST_PIX_FMT */
 
-enum PixelFormat avcodec_find_best_pix_fmt2(enum PixelFormat dst_pix_fmt1, enum PixelFormat dst_pix_fmt2,
+enum PixelFormat avcodec_find_best_pix_fmt_of_2(enum PixelFormat dst_pix_fmt1, enum PixelFormat dst_pix_fmt2,
                                             enum PixelFormat src_pix_fmt, int has_alpha, int *loss_ptr)
 {
     enum PixelFormat dst_pix_fmt;
@@ -577,6 +577,12 @@ enum PixelFormat avcodec_find_best_pix_fmt2(enum PixelFormat dst_pix_fmt1, enum
     return dst_pix_fmt;
 }
 
+enum PixelFormat avcodec_find_best_pix_fmt2(enum PixelFormat dst_pix_fmt1, enum PixelFormat dst_pix_fmt2,
+                                            enum PixelFormat src_pix_fmt, int has_alpha, int *loss_ptr)
+{
+    return avcodec_find_best_pix_fmt_of_2(dst_pix_fmt1, dst_pix_fmt2, src_pix_fmt, has_alpha, loss_ptr);
+}
+
 enum PixelFormat avcodec_find_best_pix_fmt_of_list(enum PixelFormat *pix_fmt_list,
                                             enum PixelFormat src_pix_fmt,
                                             int has_alpha, int *loss_ptr){
@@ -585,7 +591,7 @@ enum PixelFormat avcodec_find_best_pix_fmt_of_list(enum PixelFormat *pix_fmt_lis
     enum PixelFormat best = PIX_FMT_NONE;
 
     for(i=0; pix_fmt_list[i] != PIX_FMT_NONE; i++)
-        best = avcodec_find_best_pix_fmt2(best, pix_fmt_list[i], src_pix_fmt, has_alpha, loss_ptr);
+        best = avcodec_find_best_pix_fmt_of_2(best, pix_fmt_list[i], src_pix_fmt, has_alpha, loss_ptr);
 
     return best;
 }