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fix for 256 color encoding in zmbv.dll codec patch by Avery Lee

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@3993
This commit is contained in:
Sjoerd van der Berg 2016-09-04 19:04:02 +00:00
parent 4c4f232473
commit 169ca61f9e
1 changed files with 23 additions and 1 deletions
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24
src/libs/zmbv/zmbv_vfw.cpp
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@ -300,7 +300,29 @@ DWORD CodecInst::Compress(ICCOMPRESS* icinfo, DWORD dwSize) {
if (icinfo->dwFlags & ICCOMPRESS_KEYFRAME)
flags |= 1;
codec->PrepareCompressFrame( flags, format, 0, icinfo->lpOutput, 99999999);
char palette[256 * 4];
char *pal = NULL;
if (lpbiIn->biBitCount == 8) {
const int entries = icinfo->lpbiInput->biClrUsed ? icinfo->lpbiInput->biClrUsed : 256;
const char* srcpal = (char *)icinfo->lpbiInput + icinfo->lpbiInput->biSize;
char* dstpal = palette;
memset(palette, 0, sizeof palette);
for(int i=0; i<entries; ++i) {
dstpal[0] = srcpal[2];
dstpal[1] = srcpal[1];
dstpal[2] = srcpal[0];
dstpal[3] = 0;
dstpal += 4;
srcpal += 4;
}
pal = palette;
}
codec->PrepareCompressFrame( flags, format, pal, icinfo->lpOutput, 99999999);
char *readPt = (char *)icinfo->lpInput + pitch*(lpbiIn->biHeight - 1);
for(i = 0;i<lpbiIn->biHeight;i++) {
codec->CompressLines(1, (void **)&readPt );