Revert "pnm: remove nonsense code"

Breaks decoding pgms with 256 < maxval < 65535.

Found-by: Carl Eugen Hoyos <cehoyos@ag.or.at>.
This reverts commit a0348d0966a81a66f3a1bf061576b24d5296b933.

diff --git a/libavcodec/pnm.c b/libavcodec/pnm.c
index 6e2e96c40381ec1c87e3e2cff0028bf63653d4cd..5a24befa3673335555a7fda72edf1006d6be1db9 100644 (file)
--- a/libavcodec/pnm.c
+++ b/libavcodec/pnm.c
@@ -163,6 +163,8 @@ int ff_pnm_decode_header(AVCodecContext *avctx, PNMContext * const s)
         if (s->maxval >= 256) {
             if (avctx->pix_fmt == AV_PIX_FMT_GRAY8) {
                 avctx->pix_fmt = AV_PIX_FMT_GRAY16BE;
+                if (s->maxval != 65535)
+                    avctx->pix_fmt = AV_PIX_FMT_GRAY16;
             } else if (avctx->pix_fmt == AV_PIX_FMT_RGB24) {
                 avctx->pix_fmt = AV_PIX_FMT_RGB48BE;
             } else if (avctx->pix_fmt == AV_PIX_FMT_YUV420P && s->maxval < 65536) {