msvfw32: Ask the driver about how much data is required for lpbiOut.

Signed-off-by: Bruno Jesus <00cpxxx@gmail.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>

msvfw32: Ask the driver about how much data is required for lpbiOut.
bd4ead0f · Bruno Jesus · Alexandre Julliard · f12a970c · bd4ead0f
Commit bd4ead0f authored Oct 21, 2015 by Bruno Jesus Committed by Alexandre Julliard Oct 21, 2015
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msvideo_main.c dlls/msvfw32/msvideo_main.c +7 -1

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--- 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 */