pixdesc: add function to return pixel format with swapped endiannes

libavutil/pixdesc.c

@@ -1512,3 +1512,51 @@ int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
         ret += planes[i];
     return ret;
 }
+
+
+enum AVPixelFormat av_pix_fmt_swap_endianness(enum AVPixelFormat pix_fmt)
+{
+#define PIX_FMT_SWAP_ENDIANNESS(fmt)                                           \
+    case AV_PIX_FMT_ ## fmt ## BE: return AV_PIX_FMT_ ## fmt ## LE;            \
+    case AV_PIX_FMT_ ## fmt ## LE: return AV_PIX_FMT_ ## fmt ## BE
+
+    switch (pix_fmt) {
+    PIX_FMT_SWAP_ENDIANNESS(GRAY16);
+    PIX_FMT_SWAP_ENDIANNESS(RGB48);
+    PIX_FMT_SWAP_ENDIANNESS(RGB565);
+    PIX_FMT_SWAP_ENDIANNESS(RGB555);
+    PIX_FMT_SWAP_ENDIANNESS(RGB444);
+    PIX_FMT_SWAP_ENDIANNESS(BGR48);
+    PIX_FMT_SWAP_ENDIANNESS(BGR565);
+    PIX_FMT_SWAP_ENDIANNESS(BGR555);
+    PIX_FMT_SWAP_ENDIANNESS(BGR444);
+
+    PIX_FMT_SWAP_ENDIANNESS(YUV420P9);
+    PIX_FMT_SWAP_ENDIANNESS(YUV422P9);
+    PIX_FMT_SWAP_ENDIANNESS(YUV444P9);
+    PIX_FMT_SWAP_ENDIANNESS(YUV420P10);
+    PIX_FMT_SWAP_ENDIANNESS(YUV422P10);
+    PIX_FMT_SWAP_ENDIANNESS(YUV444P10);
+    PIX_FMT_SWAP_ENDIANNESS(YUV420P16);
+    PIX_FMT_SWAP_ENDIANNESS(YUV422P16);
+    PIX_FMT_SWAP_ENDIANNESS(YUV444P16);
+
+    PIX_FMT_SWAP_ENDIANNESS(GBRP9);
+    PIX_FMT_SWAP_ENDIANNESS(GBRP10);
+    PIX_FMT_SWAP_ENDIANNESS(GBRP16);
+    PIX_FMT_SWAP_ENDIANNESS(YUVA420P9);
+    PIX_FMT_SWAP_ENDIANNESS(YUVA422P9);
+    PIX_FMT_SWAP_ENDIANNESS(YUVA444P9);
+    PIX_FMT_SWAP_ENDIANNESS(YUVA420P10);
+    PIX_FMT_SWAP_ENDIANNESS(YUVA422P10);
+    PIX_FMT_SWAP_ENDIANNESS(YUVA444P10);
+    PIX_FMT_SWAP_ENDIANNESS(YUVA420P16);
+    PIX_FMT_SWAP_ENDIANNESS(YUVA422P16);
+    PIX_FMT_SWAP_ENDIANNESS(YUVA444P16);
+
+    PIX_FMT_SWAP_ENDIANNESS(XYZ12);
+    default:
+        return AV_PIX_FMT_NONE;
+    }
+#undef PIX_FMT_SWAP_ENDIANNESS
+}

libavutil/pixdesc.h

@@ -226,4 +226,15 @@ int av_pix_fmt_get_chroma_sub_sample(enum AVPixelFormat pix_fmt,
 int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt);
 
 
+/**
+ * Utility function to swap the endianness of a pixel format.
+ *
+ * @param[in]  pix_fmt the pixel format
+ *
+ * @return pixel format with swapped endianness if it exists,
+ * otherwise AV_PIX_FMT_NONE
+ */
+enum AVPixelFormat av_pix_fmt_swap_endianness(enum AVPixelFormat pix_fmt);
+
+
 #endif /* AVUTIL_PIXDESC_H */

libavutil/version.h

@@ -38,7 +38,7 @@
 
 #define LIBAVUTIL_VERSION_MAJOR 52
 #define LIBAVUTIL_VERSION_MINOR 10
-#define LIBAVUTIL_VERSION_MICRO  0
+#define LIBAVUTIL_VERSION_MICRO  1
 
 #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
                                                LIBAVUTIL_VERSION_MINOR, \