swscale/input: add VUYA input support

Reviewed-by: Philip Langdale <philipl@overt.org>
Signed-off-by: James Almer <jamrial@gmail.com>

libswscale/input.c

@@ -650,6 +650,32 @@ static void read_ayuv64le_A_c(uint8_t *dst, const uint8_t *src, const uint8_t *u
         AV_WN16(dst + i * 2, AV_RL16(src + i * 8));
 }
 
+static void read_vuya_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)
+{
+    int i;
+    for (i = 0; i < width; i++) {
+        dstU[i] = src[i * 4 + 1];
+        dstV[i] = src[i * 4];
+    }
+}
+
+static void read_vuya_Y_c(uint8_t *dst, const uint8_t *src, const uint8_t *unused0, const uint8_t *unused1, int width,
+                          uint32_t *unused2)
+{
+    int i;
+    for (i = 0; i < width; i++)
+        dst[i] = src[i * 4 + 2];
+}
+
+static void read_vuya_A_c(uint8_t *dst, const uint8_t *src, const uint8_t *unused0, const uint8_t *unused1, int width,
+                          uint32_t *unused2)
+{
+    int i;
+    for (i = 0; i < width; i++)
+        dst[i] = src[i * 4 + 3];
+}
+
 /* This is almost identical to the previous, end exists only because
  * yuy2ToY/UV)(dst, src + 1, ...) would have 100% unaligned accesses. */
 static void uyvyToY_c(uint8_t *dst, const uint8_t *src, const uint8_t *unused1, const uint8_t *unused2,  int width,
@@ -1229,6 +1255,9 @@ av_cold void ff_sws_init_input_funcs(SwsContext *c)
         c->chrToYV12 = bswap16UV_c;
         break;
 #endif
+    case AV_PIX_FMT_VUYA:
+        c->chrToYV12 = read_vuya_UV_c;
+        break;
     case AV_PIX_FMT_AYUV64LE:
         c->chrToYV12 = read_ayuv64le_UV_c;
         break;
@@ -1591,6 +1620,9 @@ av_cold void ff_sws_init_input_funcs(SwsContext *c)
     case AV_PIX_FMT_YA16BE:
         c->lumToYV12 = read_ya16be_gray_c;
         break;
+    case AV_PIX_FMT_VUYA:
+        c->lumToYV12 = read_vuya_Y_c;
+        break;
     case AV_PIX_FMT_AYUV64LE:
         c->lumToYV12 = read_ayuv64le_Y_c;
         break;
@@ -1746,6 +1778,9 @@ av_cold void ff_sws_init_input_funcs(SwsContext *c)
         case AV_PIX_FMT_YA16BE:
             c->alpToYV12 = read_ya16be_alpha_c;
             break;
+        case AV_PIX_FMT_VUYA:
+            c->alpToYV12 = read_vuya_A_c;
+            break;
         case AV_PIX_FMT_AYUV64LE:
             c->alpToYV12 = read_ayuv64le_A_c;
             break;

libswscale/utils.c

@@ -258,6 +258,7 @@ static const FormatEntry format_entries[] = {
     [AV_PIX_FMT_P416BE]      = { 1, 1 },
     [AV_PIX_FMT_P416LE]      = { 1, 1 },
     [AV_PIX_FMT_NV16]        = { 1, 1 },
+    [AV_PIX_FMT_VUYA]        = { 1, 0 },
 };
 
 int ff_shuffle_filter_coefficients(SwsContext *c, int *filterPos,

libswscale/version.h

@@ -29,7 +29,7 @@
 #include "version_major.h"
 
 #define LIBSWSCALE_VERSION_MINOR   8
-#define LIBSWSCALE_VERSION_MICRO 101
+#define LIBSWSCALE_VERSION_MICRO 102
 
 #define LIBSWSCALE_VERSION_INT  AV_VERSION_INT(LIBSWSCALE_VERSION_MAJOR, \
                                                LIBSWSCALE_VERSION_MINOR, \