commit 5a9588b088423772ba567a71a3b0d4800c77d407
author Reinhard Tartler <siretart@tauware.de> Sun Jun 03 19:35:50 2012 +0200
committer Reinhard Tartler <siretart@tauware.de> Sun Jun 03 19:35:50 2012 +0200
tree ddd3563c04b472b53400ea63551ff177704b290b
parent 02cd93f4ad432769bdda96c36e920d3664bc3e75

png: check bit depth for PAL8/Y400A pixel formats.

Wrong bit depth can lead to invalid rowsize values, which crashes the
decoder further down.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
(cherry picked from commit d2205d6543881f2e6fa18c8a354bbcf91a1235f7)

Signed-off-by: Reinhard Tartler <siretart@tauware.de>
(cherry picked from commit b8d6ba9d50e80fdce2ed74cdaffd4960df8a21c5)

Signed-off-by: Reinhard Tartler <siretart@tauware.de>
(cherry picked from commit 33f93005f1a86c108302b4c5978aa1a3d8e092cc)

Signed-off-by: Reinhard Tartler <siretart@tauware.de>
(cherry picked from commit 4c8c2660bd9252775c9a1dc2e2f36cb34718595a)

Signed-off-by: Reinhard Tartler <siretart@tauware.de>

Conflicts:

	libavcodec/pngdec.c

libavcodec/pngdec.c

diff --git a/libavcodec/pngdec.c b/libavcodec/pngdec.c
index a343152..d583a52 100644
--- a/libavcodec/pngdec.c
+++ b/libavcodec/pngdec.c
@@ -473,7 +473,8 @@
                 } else if (s->bit_depth == 1 &&
                            s->color_type == PNG_COLOR_TYPE_GRAY) {
                     avctx->pix_fmt = PIX_FMT_MONOBLACK;
-                } else if (s->color_type == PNG_COLOR_TYPE_PALETTE) {
+                } else if (s->bit_depth == 8 &&
+                           s->color_type == PNG_COLOR_TYPE_PALETTE) {
                     avctx->pix_fmt = PIX_FMT_PAL8;
                 } else {
                     goto fail;