swscale: fix conversion into yuva444p from non-alpha formats

Signed-off-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libswscale/swscale.c

@@ -2804,7 +2804,7 @@ static int swScale(SwsContext *c, const uint8_t* src[],
         }
     }
 
-    if ((dstFormat == PIX_FMT_YUVA420P) && !alpPixBuf)
+    if (isPlanarYUV(dstFormat) && isALPHA(dstFormat) && !alpPixBuf)
         fillPlane(dst[3], dstStride[3], dstW, dstY-lastDstY, lastDstY, 255);
 
 #if HAVE_MMX2

tests/ref/lavfi/pixdesc

@@ -61,7 +61,7 @@ yuv444p16le         20f86bc2f68d2b3f1f2b48b97b2189f4
 yuv444p9be          6ab31f4c12b533ce318ecdff83cdd054
 yuv444p9le          f0606604a5c08becab6ba500124c4b7c
 yuva420p            a29884f3f3dfe1e00b961bc17bef3d47
-yuva444p            f531f0aceeda53adfd2f89f2cb43488c
+yuva444p            c523716e4900cfe515eaab1d7124fdd9
 yuvj420p            32eec78ba51857b16ce9b813a49b7189
 yuvj422p            0dfa0ed434f73be51428758c69e082cb
 yuvj440p            657501a28004e27a592757a7509f5189

tests/ref/lavfi/pixfmts_copy

@@ -62,7 +62,7 @@ yuv444p16le         20f86bc2f68d2b3f1f2b48b97b2189f4
 yuv444p9be          6ab31f4c12b533ce318ecdff83cdd054
 yuv444p9le          f0606604a5c08becab6ba500124c4b7c
 yuva420p            a29884f3f3dfe1e00b961bc17bef3d47
-yuva444p            f531f0aceeda53adfd2f89f2cb43488c
+yuva444p            c523716e4900cfe515eaab1d7124fdd9
 yuvj420p            32eec78ba51857b16ce9b813a49b7189
 yuvj422p            0dfa0ed434f73be51428758c69e082cb
 yuvj440p            657501a28004e27a592757a7509f5189

tests/ref/lavfi/pixfmts_null

@@ -62,7 +62,7 @@ yuv444p16le         20f86bc2f68d2b3f1f2b48b97b2189f4
 yuv444p9be          6ab31f4c12b533ce318ecdff83cdd054
 yuv444p9le          f0606604a5c08becab6ba500124c4b7c
 yuva420p            a29884f3f3dfe1e00b961bc17bef3d47
-yuva444p            f531f0aceeda53adfd2f89f2cb43488c
+yuva444p            c523716e4900cfe515eaab1d7124fdd9
 yuvj420p            32eec78ba51857b16ce9b813a49b7189
 yuvj422p            0dfa0ed434f73be51428758c69e082cb
 yuvj440p            657501a28004e27a592757a7509f5189

tests/ref/lavfi/pixfmts_scale

@@ -62,7 +62,7 @@ yuv444p16le         a0c5d3c7bf3f181db503cf8e450d1335
 yuv444p9be          9ac2643ce7f7e5c4e17c8c9fd8494d4a
 yuv444p9le          896a1cc9cccca1ba410dd53942d33cc4
 yuva420p            8673a9131fb47de69788863f93a50eb7
-yuva444p            2d09fa4aaf1f6def1d41f0af78fe4433
+yuva444p            3268c6abe5e3cdbd16552a1eddced816
 yuvj420p            30427bd6caf5bda93a173dbebe759e09
 yuvj422p            fc8288f64fd149573f73cf8da05d8e6d
 yuvj440p            508ac7a9ddeb6d1794a1100ba7a1664c

tests/ref/lavfi/pixfmts_vflip

@@ -62,7 +62,7 @@ yuv444p16le         8e83323cf102d6c823a03ae8a7b7e033
 yuv444p9be          6ac92b7dc9ab2fc59bee99204886899a
 yuv444p9le          85aef13a654953d3455d89770b0d74bd
 yuva420p            c705d1cf061d8c6580ac690b55f92276
-yuva444p            f374c860e711e8226105de8f02f08f3b
+yuva444p            da5d64f2b2bd2013c186456f595fad65
 yuvj420p            41fd02b204da0ab62452cd14b595e2e4
 yuvj422p            7f6ca9bc1812cde02036d7d29a7cce43
 yuvj440p            25711c3c0fd15ec19c59a10784fcfb96