hwaccel: do not offer unsupported pixel formats

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

libavcodec/h264.c

@@ -60,10 +60,18 @@ static const uint8_t div6[QP_MAX_NUM + 1] = {
 };
 
 static const enum AVPixelFormat hwaccel_pixfmt_list_h264_jpeg_420[] = {
+#if CONFIG_H264_DXVA2_HWACCEL
     AV_PIX_FMT_DXVA2_VLD,
+#endif
+#if CONFIG_H264_VAAPI_HWACCEL
     AV_PIX_FMT_VAAPI_VLD,
+#endif
+#if CONFIG_H264_VDA_HWACCEL
     AV_PIX_FMT_VDA_VLD,
+#endif
+#if CONFIG_H264_VDPAU_HWACCEL
     AV_PIX_FMT_VDPAU,
+#endif
     AV_PIX_FMT_YUVJ420P,
     AV_PIX_FMT_NONE
 };

libavcodec/mpegvideo.c

@@ -131,10 +131,18 @@ const enum AVPixelFormat ff_pixfmt_list_420[] = {
 };
 
 const enum AVPixelFormat ff_hwaccel_pixfmt_list_420[] = {
+#if CONFIG_DXVA2
     AV_PIX_FMT_DXVA2_VLD,
+#endif
+#if CONFIG_VAAPI
     AV_PIX_FMT_VAAPI_VLD,
+#endif
+#if CONFIG_VDA
     AV_PIX_FMT_VDA_VLD,
+#endif
+#if CONFIG_VDPAU
     AV_PIX_FMT_VDPAU,
+#endif
     AV_PIX_FMT_YUV420P,
     AV_PIX_FMT_NONE
 };