swscale/input: add VYU444 input support

Signed-off-by: James Almer <jamrial@gmail.com>

libswscale/input.c

@@ -746,6 +746,24 @@ static void read_uyva_UV_c(uint8_t *dstU, uint8_t *dstV, const uint8_t *unused0,
     }
 }
 
+static void vyuToY_c(uint8_t *dst, const uint8_t *src, const uint8_t *unused0, const uint8_t *unused1, int width,
+                     uint32_t *unused2, void *opq)
+{
+    int i;
+    for (i = 0; i < width; i++)
+        dst[i] = src[i * 3 + 1];
+}
+
+static void vyuToUV_c(uint8_t *dstU, uint8_t *dstV, const uint8_t *unused0, const uint8_t *src,
+                      const uint8_t *unused1, int width, uint32_t *unused2, void *opq)
+{
+    int i;
+    for (i = 0; i < width; i++) {
+        dstU[i] = src[i * 3 + 2];
+        dstV[i] = src[i * 3];
+    }
+}
+
 static void read_xv30le_Y_c(uint8_t *dst, const uint8_t *src, const uint8_t *unused0, const uint8_t *unused1, int width,
                                uint32_t *unused2, void *opq)
 {
@@ -1342,6 +1360,9 @@ av_cold void ff_sws_init_input_funcs(SwsContext *c,
     case AV_PIX_FMT_UYVY422:
         *chrToYV12 = uyvyToUV_c;
         break;
+    case AV_PIX_FMT_VYU444:
+        *chrToYV12 = vyuToUV_c;
+        break;
     case AV_PIX_FMT_NV12:
     case AV_PIX_FMT_NV16:
     case AV_PIX_FMT_NV24:
@@ -1905,6 +1926,9 @@ av_cold void ff_sws_init_input_funcs(SwsContext *c,
     case AV_PIX_FMT_UYVY422:
         *lumToYV12 = uyvyToY_c;
         break;
+    case AV_PIX_FMT_VYU444:
+        *lumToYV12 = vyuToY_c;
+        break;
     case AV_PIX_FMT_BGR24:
         *lumToYV12 = bgr24ToY_c;
         break;

libswscale/utils.c

@@ -270,6 +270,7 @@ static const FormatEntry format_entries[] = {
     [AV_PIX_FMT_XV36LE]      = { 1, 1 },
     [AV_PIX_FMT_AYUV]        = { 1, 0 },
     [AV_PIX_FMT_UYVA]        = { 1, 0 },
+    [AV_PIX_FMT_VYU444]      = { 1, 0 },
 };
 
 /**