lavu/pixfmt: Add packed 4:4:4 format

The "AYUV" format is defined by Microsoft as their preferred format for
4:4:4 content, and so it is the format used by Intel VAAPI and QSV.

As Microsoft like to define their byte ordering in little-endian
fashion, the memory order is reversed, and so our pix_fmt, which
follows memory order, has a reversed name (VUYA).

doc/APIchanges

@@ -14,6 +14,9 @@ libavutil:     2021-04-27
 
 API changes, most recent first:
 
+2022-08-03 - xxxxxxxxxx - lavu 57.32.100 - pixfmt.h
+  Add AV_PIX_FMT_VUYA.
+
 2022-08-xx - xxxxxxxxxx - lavc 59.41.100 - avcodec.h codec.h
   Add AV_CODEC_FLAG_RECON_FRAME and AV_CODEC_CAP_ENCODER_RECON_FRAME.
   avcodec_receive_frame() may now be used on encoders when

libavutil/pixdesc.c

@@ -2491,6 +2491,19 @@ static const AVPixFmtDescriptor av_pix_fmt_descriptors[AV_PIX_FMT_NB] = {
         },
         .flags = AV_PIX_FMT_FLAG_PLANAR,
     },
+    [AV_PIX_FMT_VUYA] = {
+        .name = "vuya",
+        .nb_components = 4,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 4, 2, 0, 8 },        /* Y */
+            { 0, 4, 1, 0, 8 },        /* U */
+            { 0, 4, 0, 0, 8 },        /* V */
+            { 0, 4, 3, 0, 8 },        /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_ALPHA,
+    },
 };
 
 static const char * const color_range_names[] = {

libavutil/pixfmt.h

@@ -367,6 +367,8 @@ enum AVPixelFormat {
     AV_PIX_FMT_P416BE,      ///< interleaved chroma YUV 4:4:4, 48bpp, big-endian
     AV_PIX_FMT_P416LE,      ///< interleaved chroma YUV 4:4:4, 48bpp, little-endian
 
+    AV_PIX_FMT_VUYA,        ///< packed VUYA 4:4:4, 32bpp, VUYAVUYA...
+
     AV_PIX_FMT_NB         ///< number of pixel formats, DO NOT USE THIS if you want to link with shared libav* because the number of formats might differ between versions
 };
 

libavutil/version.h

@@ -79,7 +79,7 @@
  */
 
 #define LIBAVUTIL_VERSION_MAJOR  57
-#define LIBAVUTIL_VERSION_MINOR  31
+#define LIBAVUTIL_VERSION_MINOR  32
 #define LIBAVUTIL_VERSION_MICRO 100
 
 #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \

tests/ref/fate/imgutils

@@ -246,3 +246,4 @@ p216be          planes: 2, linesizes: 128 128   0   0, plane_sizes:  6144  6144
 p216le          planes: 2, linesizes: 128 128   0   0, plane_sizes:  6144  6144     0     0, plane_offsets:  6144     0     0, total_size: 12288
 p416be          planes: 2, linesizes: 128 256   0   0, plane_sizes:  6144 12288     0     0, plane_offsets:  6144     0     0, total_size: 18432
 p416le          planes: 2, linesizes: 128 256   0   0, plane_sizes:  6144 12288     0     0, plane_offsets:  6144     0     0, total_size: 18432
+vuya            planes: 1, linesizes: 256   0   0   0, plane_sizes: 12288     0     0     0, plane_offsets:     0     0     0, total_size: 12288

tests/ref/fate/sws-pixdesc-query

@@ -215,6 +215,7 @@ isYUV:
   p416le
   uyvy422
   uyyvyy411
+  vuya
   xyz12be
   xyz12le
   y210be
@@ -654,6 +655,7 @@ ALPHA:
   rgb32_1
   rgba64be
   rgba64le
+  vuya
   ya16be
   ya16le
   ya8
@@ -739,6 +741,7 @@ Packed:
   rgba64le
   uyvy422
   uyyvyy411
+  vuya
   x2bgr10be
   x2bgr10le
   x2rgb10be
@@ -967,5 +970,6 @@ DataInHighBits:
 SwappedChroma:
   nv21
   nv42
+  vuya
   yvyu422