[2/3] msvfw32: Ask the driver about how much data is required for lpbiOut

[Bruno Jesus]

Signed-off-by: Bruno Jesus <00cpxxx at gmail.com>

Depending on bpp the colors will be put just after the
BITMAPINFOHEADER so allocating a fixed buffer size is not enough.

Noticed while making a test with the MSRLE codec.
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---
 dlls/msvfw32/msvideo_main.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/dlls/msvfw32/msvideo_main.c b/dlls/msvfw32/msvideo_main.c
index db71014..717bcf9 100644
--- a/dlls/msvfw32/msvideo_main.c
+++ b/dlls/msvfw32/msvideo_main.c
@@ -1458,7 +1458,13 @@ BOOL VFWAPI ICSeqCompressFrameStart(PCOMPVARS pc, LPBITMAPINFO lpbiIn)
 
     if (!pc->lpbiOut)
     {
-        pc->lpbiOut = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(BITMAPINFO));
+        /* Ask compressor for needed header size */
+        int size = ICSendMessage(pc->hic, ICM_COMPRESS_GET_FORMAT,
+                                 (DWORD_PTR)pc->lpbiIn, 0);
+        if (size <= 0)
+            goto error;
+
+        pc->lpbiOut = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, size);
         if (!pc->lpbiOut)
             goto error;
         /* Flag to show that we allocated lpbiOut for proper cleanup */
-- 
2.1.4