lavu/videotoolbox: expose conversion routines for color parameters

Also fixes symbol lookup errors on older macOS when built with a newer SDK,
introduced in 6cab5206b0ad94990c435cb7c5cf3b29675e0231

1 files changed, 25 insertions, 0 deletions

diff --git a/libavutil/hwcontext_videotoolbox.h b/libavutil/hwcontext_videotoolbox.h
index 62cde07c51..916899e97d 100644
--- a/libavutil/hwcontext_videotoolbox.h
+++ b/libavutil/hwcontext_videotoolbox.h
@@ -60,4 +60,29 @@ uint32_t av_map_videotoolbox_format_from_pixfmt(enum AVPixelFormat pix_fmt);
  */
 uint32_t av_map_videotoolbox_format_from_pixfmt2(enum AVPixelFormat pix_fmt, bool full_range);
 
+/**
+ * Convert an AVChromaLocation to a VideoToolbox/CoreVideo chroma location string.
+ * Returns 0 if no known equivalent was found.
+ */
+CFStringRef av_map_videotoolbox_chroma_loc_from_av(enum AVChromaLocation loc);
+
+/**
+ * Convert an AVColorSpace to a VideoToolbox/CoreVideo color matrix string.
+ * Returns 0 if no known equivalent was found.
+ */
+CFStringRef av_map_videotoolbox_color_matrix_from_av(enum AVColorSpace space);
+
+/**
+ * Convert an AVColorPrimaries to a VideoToolbox/CoreVideo color primaries string.
+ * Returns 0 if no known equivalent was found.
+ */
+CFStringRef av_map_videotoolbox_color_primaries_from_av(enum AVColorPrimaries pri);
+
+/**
+ * Convert an AVColorTransferCharacteristic to a VideoToolbox/CoreVideo color transfer
+ * function string.
+ * Returns 0 if no known equivalent was found.
+ */
+CFStringRef av_map_videotoolbox_color_trc_from_av(enum AVColorTransferCharacteristic trc);
+
 #endif /* AVUTIL_HWCONTEXT_VIDEOTOOLBOX_H */