From 9723d7d523b0871159e56f8144d59bd35a0390e2 Mon Sep 17 00:00:00 2001
From: Linjie Fu <linjie.fu@intel.com>
Date: Wed, 26 Feb 2020 16:39:29 +0800
Subject: lavc/qsvdec: add decode support for HEVC 4:2:2 8-bit and 10-bit

Enables HEVC Range Extension decoding support (Linux) for 4:2:2 8/10 bit
on ICL+ (gen11 +) platform.

Restricted to linux only for now.

Signed-off-by: Linjie Fu <linjie.fu@intel.com>
---
 libavcodec/qsv.c          | 16 ++++++++++++++++
 libavutil/hwcontext_qsv.c | 24 ++++++++++++++++++++++++
 2 files changed, 40 insertions(+)

diff --git a/libavcodec/qsv.c b/libavcodec/qsv.c
index db98c75073..171a8d6077 100644
--- a/libavcodec/qsv.c
+++ b/libavcodec/qsv.c
@@ -195,6 +195,12 @@ enum AVPixelFormat ff_qsv_map_fourcc(uint32_t fourcc)
     case MFX_FOURCC_NV12: return AV_PIX_FMT_NV12;
     case MFX_FOURCC_P010: return AV_PIX_FMT_P010;
     case MFX_FOURCC_P8:   return AV_PIX_FMT_PAL8;
+#if CONFIG_VAAPI
+    case MFX_FOURCC_YUY2: return AV_PIX_FMT_YUYV422;
+#if QSV_VERSION_ATLEAST(1, 27)
+    case MFX_FOURCC_Y210: return AV_PIX_FMT_Y210;
+#endif
+#endif
     }
     return AV_PIX_FMT_NONE;
 }
@@ -211,6 +217,16 @@ int ff_qsv_map_pixfmt(enum AVPixelFormat format, uint32_t *fourcc)
     case AV_PIX_FMT_P010:
         *fourcc = MFX_FOURCC_P010;
         return AV_PIX_FMT_P010;
+#if CONFIG_VAAPI
+    case AV_PIX_FMT_YUV422P:
+        *fourcc = MFX_FOURCC_YUY2;
+        return AV_PIX_FMT_YUYV422;
+#if QSV_VERSION_ATLEAST(1, 27)
+    case AV_PIX_FMT_YUV422P10:
+        *fourcc = MFX_FOURCC_Y210;
+        return AV_PIX_FMT_Y210;
+#endif
+#endif
     default:
         return AVERROR(ENOSYS);
     }
diff --git a/libavutil/hwcontext_qsv.c b/libavutil/hwcontext_qsv.c
index b1b67400de..4306c6e3b9 100644
--- a/libavutil/hwcontext_qsv.c
+++ b/libavutil/hwcontext_qsv.c
@@ -44,6 +44,10 @@
 #include "pixdesc.h"
 #include "time.h"
 
+#define QSV_VERSION_ATLEAST(MAJOR, MINOR)   \
+    (MFX_VERSION_MAJOR > (MAJOR) ||         \
+     MFX_VERSION_MAJOR == (MAJOR) && MFX_VERSION_MINOR >= (MINOR))
+
 typedef struct QSVDevicePriv {
     AVBufferRef *child_device_ctx;
 } QSVDevicePriv;
@@ -103,6 +107,14 @@ static const struct {
     { AV_PIX_FMT_BGRA, MFX_FOURCC_RGB4 },
     { AV_PIX_FMT_P010, MFX_FOURCC_P010 },
     { AV_PIX_FMT_PAL8, MFX_FOURCC_P8   },
+#if CONFIG_VAAPI
+    { AV_PIX_FMT_YUYV422,
+                       MFX_FOURCC_YUY2 },
+#if QSV_VERSION_ATLEAST(1, 27)
+    { AV_PIX_FMT_Y210,
+                       MFX_FOURCC_Y210 },
+#endif
+#endif
 };
 
 static uint32_t qsv_fourcc_from_pix_fmt(enum AVPixelFormat pix_fmt)
@@ -773,7 +785,19 @@ static int map_frame_to_surface(const AVFrame *frame, mfxFrameSurface1 *surface)
         surface->Data.R = frame->data[0] + 2;
         surface->Data.A = frame->data[0] + 3;
         break;
+#if CONFIG_VAAPI
+    case AV_PIX_FMT_YUYV422:
+        surface->Data.Y = frame->data[0];
+        surface->Data.U = frame->data[0] + 1;
+        surface->Data.V = frame->data[0] + 3;
+        break;
 
+    case AV_PIX_FMT_Y210:
+        surface->Data.Y16 = (mfxU16 *)frame->data[0];
+        surface->Data.U16 = (mfxU16 *)frame->data[0] + 1;
+        surface->Data.V16 = (mfxU16 *)frame->data[0] + 3;
+        break;
+#endif
     default:
         return MFX_ERR_UNSUPPORTED;
     }
-- 
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