[PATCH 09/11] filetype: add PNG support

[Jean-Christophe PLAGNIOL-VILLARD]

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj at jcrosoft.com>
---
 common/filetype.c  |    3 +++
 include/filetype.h |    1 +
 2 files changed, 4 insertions(+)

diff --git a/common/filetype.c b/common/filetype.c
index 5710394..0eaf119 100644
--- a/common/filetype.c
+++ b/common/filetype.c
@@ -71,6 +71,7 @@ static int is_fat(u8 *buf)
 enum filetype file_detect_type(void *_buf)
 {
 	u32 *buf = _buf;
+	u64 *buf64 = _buf;
 	u8 *buf8 = _buf;
 
 	if (strncmp(buf8, "#!/bin/sh", 9) == 0)
@@ -103,6 +104,8 @@ enum filetype file_detect_type(void *_buf)
 		return filetype_fat;
 	if (strncmp(buf8, "BM", 2) == 0)
 		return filetype_bmp;
+	if (buf64[0] == le64_to_cpu(0x0a1a0a0d474e5089ull))
+		return filetype_png;
 
 	return filetype_unknown;
 }
diff --git a/include/filetype.h b/include/filetype.h
index 6c97159..2924032 100644
--- a/include/filetype.h
+++ b/include/filetype.h
@@ -20,6 +20,7 @@ enum filetype {
 	filetype_mips_barebox,
 	filetype_fat,
 	filetype_bmp,
+	filetype_png,
 };
 
 const char *file_type_to_string(enum filetype f);
-- 
1.7.10.4