libx265: Add 4:2:2 support

It is also not final yet, so require -strict experimental.

Requires a bump to version 17.
Signed-off-by: NDerek Buitenhuis <derek.buitenhuis@gmail.com>

configure

@@ -4722,8 +4722,8 @@ enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &
                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
-                             { check_cpp_condition x265.h "X265_BUILD >= 13" ||
-                               die "ERROR: libx265 version must be >= 13."; }
+                             { check_cpp_condition x265.h "X265_BUILD >= 17" ||
+                               die "ERROR: libx265 version must be >= 17."; }
 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new

libavcodec/libx265.c

@@ -82,10 +82,9 @@ static av_cold int libx265_encode_init(AVCodecContext *avctx)
     int nnal;
 
     if (avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL &&
-        !av_pix_fmt_desc_get(avctx->pix_fmt)->log2_chroma_w &&
-        !av_pix_fmt_desc_get(avctx->pix_fmt)->log2_chroma_h) {
+        !av_pix_fmt_desc_get(avctx->pix_fmt)->log2_chroma_w) {
         av_log(avctx, AV_LOG_ERROR,
-               "4:4:4 support is not fully defined for HEVC yet. "
+               "4:2:2 and 4:4:4 support is not fully defined for HEVC yet. "
                "Set -strict experimental to encode anyway.\n");
         return AVERROR(ENOSYS);
     }
@@ -134,6 +133,10 @@ static av_cold int libx265_encode_init(AVCodecContext *avctx)
     case AV_PIX_FMT_YUV420P10:
         ctx->params->internalCsp = X265_CSP_I420;
         break;
+    case AV_PIX_FMT_YUV422P:
+    case AV_PIX_FMT_YUV422P10:
+        ctx->params->internalCsp = X265_CSP_I422;
+        break;
     case AV_PIX_FMT_YUV444P:
     case AV_PIX_FMT_YUV444P10:
         ctx->params->internalCsp = X265_CSP_I444;
@@ -262,14 +265,17 @@ static int libx265_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
 
 static const enum AVPixelFormat x265_csp_eight[] = {
     AV_PIX_FMT_YUV420P,
+    AV_PIX_FMT_YUV422P,
     AV_PIX_FMT_YUV444P,
     AV_PIX_FMT_NONE
 };
 
 static const enum AVPixelFormat x265_csp_twelve[] = {
     AV_PIX_FMT_YUV420P,
+    AV_PIX_FMT_YUV422P,
     AV_PIX_FMT_YUV444P,
     AV_PIX_FMT_YUV420P10,
+    AV_PIX_FMT_YUV422P10,
     AV_PIX_FMT_YUV444P10,
     AV_PIX_FMT_NONE
 };