swscale/input: add UYVA input support

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

libswscale/input.c

@@ -736,6 +736,16 @@ static void read_ayuv_A_c(uint8_t *dst, const uint8_t *src, const uint8_t *unuse
         dst[i] = src[i * 4];
 }
 
+static void read_uyva_UV_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 * 4];
+        dstV[i] = src[i * 4 + 2];
+    }
+}
+
 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)
 {
@@ -1476,6 +1486,9 @@ av_cold void ff_sws_init_input_funcs(SwsContext *c,
     case AV_PIX_FMT_AYUV64LE:
         *chrToYV12 = read_ayuv64le_UV_c;
         break;
+    case AV_PIX_FMT_UYVA:
+        *chrToYV12 = read_uyva_UV_c;
+        break;
     case AV_PIX_FMT_XV36LE:
         *chrToYV12 = read_xv36le_UV_c;
         break;
@@ -1875,6 +1888,7 @@ av_cold void ff_sws_init_input_funcs(SwsContext *c,
         *lumToYV12 = read_xv30le_Y_c;
         break;
     case AV_PIX_FMT_AYUV:
+    case AV_PIX_FMT_UYVA:
         *lumToYV12 = read_ayuv_Y_c;
         break;
     case AV_PIX_FMT_AYUV64LE:
@@ -2061,6 +2075,7 @@ av_cold void ff_sws_init_input_funcs(SwsContext *c,
             *alpToYV12 = read_ya16be_alpha_c;
             break;
         case AV_PIX_FMT_VUYA:
+        case AV_PIX_FMT_UYVA:
             *alpToYV12 = read_vuya_A_c;
             break;
         case AV_PIX_FMT_AYUV:

libswscale/utils.c

@@ -269,6 +269,7 @@ static const FormatEntry format_entries[] = {
     [AV_PIX_FMT_XV30LE]      = { 1, 1 },
     [AV_PIX_FMT_XV36LE]      = { 1, 1 },
     [AV_PIX_FMT_AYUV]        = { 1, 0 },
+    [AV_PIX_FMT_UYVA]        = { 1, 0 },
 };
 
 /**