rawdec: Fix decoding of QT WRAW files.

From some tests it results that:
1. All of the AVI/MOV WRAW files need to be flipped.
2. MOV WRAW files need to use AVI color modes.
3. Assigning PAL8 mode by default to WRAW codec is not correct.

libavcodec/raw.c

@@ -123,7 +123,6 @@ const PixelFormatTag ff_raw_pix_fmt_tags[] = {
     { PIX_FMT_YUYV422, MKTAG('y', 'u', 'v', '2') },
     { PIX_FMT_YUYV422, MKTAG('y', 'u', 'v', 's') },
     { PIX_FMT_YUYV422, MKTAG('D', 'V', 'O', 'O') }, /* Digital Voodoo SD 8 Bit */
-    { PIX_FMT_PAL8,    MKTAG('W', 'R', 'A', 'W') },
     { PIX_FMT_RGB555LE,MKTAG('L', '5', '5', '5') },
     { PIX_FMT_RGB565LE,MKTAG('L', '5', '6', '5') },
     { PIX_FMT_RGB565BE,MKTAG('B', '5', '6', '5') },

libavcodec/rawdec.c

@@ -78,6 +78,8 @@ static av_cold int raw_init_decoder(AVCodecContext *avctx)
 
     if (avctx->codec_tag == MKTAG('r','a','w',' '))
         avctx->pix_fmt = find_pix_fmt(pix_fmt_bps_mov, avctx->bits_per_coded_sample);
+    else if (avctx->codec_tag == MKTAG('W','R','A','W'))
+        avctx->pix_fmt = find_pix_fmt(pix_fmt_bps_avi, avctx->bits_per_coded_sample);
     else if (avctx->codec_tag)
         avctx->pix_fmt = find_pix_fmt(ff_raw_pix_fmt_tags, avctx->codec_tag);
     else if (avctx->pix_fmt == PIX_FMT_NONE && avctx->bits_per_coded_sample)
@@ -98,7 +100,7 @@ static av_cold int raw_init_decoder(AVCodecContext *avctx)
     avctx->coded_frame= &context->pic;
 
     if((avctx->extradata_size >= 9 && !memcmp(avctx->extradata + avctx->extradata_size - 9, "BottomUp", 9)) ||
-       avctx->codec_tag == MKTAG( 3 ,  0 ,  0 ,  0 ))
+        avctx->codec_tag == MKTAG(3, 0, 0, 0) || avctx->codec_tag == MKTAG('W','R','A','W'))
         context->flip=1;
 
     return 0;