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check for NA(no alpha) in formatHeader in RDP6_BITMAP_STREAM

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This commit is contained in:
Jay Sorg 2011-10-05 12:14:17 -07:00
parent f6cd71026e
commit d8e0df3af7
1 changed files with 14 additions and 8 deletions
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22
libfreerdp-codec/bitmap.c
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@ -251,6 +251,7 @@ static uint32 ExtractRunLength(uint32 code, uint8* pbOrderHdr, uint32* advance)
/**
* decompress a color plane
* RDP6_BITMAP_STREAM
*/
static int process_plane(uint8* in, int width, int height, uint8* out, int size)
{
@ -358,22 +359,28 @@ static int process_plane(uint8* in, int width, int height, uint8* out, int size)
/**
* 4 byte bitmap decompress
* RDP6_BITMAP_STREAM
*/
static boolean bitmap_decompress4(uint8* srcData, uint8* dstData, int width, int height, int size)
{
int code;
int bytes_pro;
int total_pro;
int RLE;
int NA; /* no alpha */
code = IN_UINT8_MV(srcData);
if (code != 0x10)
RLE = code & 0x10;
if (RLE == 0)
return False;
total_pro = 1;
bytes_pro = process_plane(srcData, width, height, dstData + 3, size - total_pro);
total_pro += bytes_pro;
srcData += bytes_pro;
NA = code & 0x20;
if (NA == 0)
{
bytes_pro = process_plane(srcData, width, height, dstData + 3, size - total_pro);
total_pro += bytes_pro;
srcData += bytes_pro;
}
bytes_pro = process_plane(srcData, width, height, dstData + 2, size - total_pro);
total_pro += bytes_pro;
srcData += bytes_pro;
@ -382,7 +389,6 @@ static boolean bitmap_decompress4(uint8* srcData, uint8* dstData, int width, int
srcData += bytes_pro;
bytes_pro = process_plane(srcData, width, height, dstData + 0, size - total_pro);
total_pro += bytes_pro;
return (size == total_pro) ? True : False;
}
@ -419,7 +425,7 @@ boolean bitmap_decompress(uint8* srcData, uint8* dstData, int width, int height,
}
else if (srcBpp == 32 && dstBpp == 32)
{
if (bitmap_decompress4(srcData, dstData, width, height, size) != True)
if (!bitmap_decompress4(srcData, dstData, width, height, size))
return False;
}
else if (srcBpp == 15 && dstBpp == 15)