[FFmpeg-devel] [PATCH] lavc/videotoolboxenc.c: Add trc for iec61966-2-1 when available

[Hao Guan]

Signed-off-by: Hao Guan <hguandl at gmail.com>
---

Notes:
    I have checked out the code about other functions introduced after macOS 10.13 and noticed that the availability is checked during configure. Therefore I add the check for sRGB function too. It should compile now.

 configure                    | 2 ++
 libavcodec/videotoolboxenc.c | 5 +++++
 2 files changed, 7 insertions(+)

diff --git a/configure b/configure
index bb6b096414..644d9f3537 100755
--- a/configure
+++ b/configure
@@ -2325,6 +2325,7 @@ TYPES_LIST="
     kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ
     kCVImageBufferTransferFunction_ITU_R_2100_HLG
     kCVImageBufferTransferFunction_Linear
+    kCVImageBufferTransferFunction_sRGB
     socklen_t
     struct_addrinfo
     struct_group_source_req
@@ -6278,6 +6279,7 @@ enabled videotoolbox && {
     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ "-framework CoreVideo"
     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_ITU_R_2100_HLG "-framework CoreVideo"
     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_Linear "-framework CoreVideo"
+    check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_sRGB "-framework CoreVideo"
 }
 
 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
diff --git a/libavcodec/videotoolboxenc.c b/libavcodec/videotoolboxenc.c
index 4eaabed5d8..4cba781e9b 100644
--- a/libavcodec/videotoolboxenc.c
+++ b/libavcodec/videotoolboxenc.c
@@ -977,6 +977,11 @@ static int get_cv_transfer_function(AVCodecContext *avctx,
             *transfer_fnc = kCVImageBufferTransferFunction_ITU_R_2100_HLG;
             break;
 #endif
+#if HAVE_KCVIMAGEBUFFERTRANSFERFUNCTION_SRGB
+        case AVCOL_TRC_IEC61966_2_1:
+            *transfer_fnc = kCVImageBufferTransferFunction_sRGB;
+            break;
+#endif
 
         case AVCOL_TRC_GAMMA22:
             gamma = 2.2;
-- 
2.30.1 (Apple Git-130)