dlls/winmm/tests/mmio.c

   1 /*
   2  * Unit tests for mmio APIs
   3  *
   4  * Copyright 2005 Dmitry Timoshkov
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include <assert.h>
  22 #include <stdarg.h>
  23
  24 #include "windef.h"
  25 #include "winbase.h"
  26 #include "wingdi.h"
  27 #include "mmsystem.h"
  28 #include "vfw.h"
  29 #include "wine/test.h"
  30
  31 static DWORD RIFF_buf[] =
  32 {
  33     FOURCC_RIFF, 7*sizeof(DWORD)+sizeof(MainAVIHeader), mmioFOURCC('A','V','I',' '),
  34     FOURCC_LIST, sizeof(DWORD)+sizeof(MMCKINFO)+sizeof(MainAVIHeader), listtypeAVIHEADER,
  35     ckidAVIMAINHDR, sizeof(MainAVIHeader), 0xdeadbeef, 0xdeadbeef,
  36     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  37     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  38     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  39     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
  40 };
  41
  42 static void test_mmioDescend(char *fname)
  43 {
  44     MMRESULT ret;
  45     HMMIO hmmio;
  46     MMIOINFO mmio;
  47     MMCKINFO ckRiff, ckList, ck;
  48
  49     memset(&mmio, 0, sizeof(mmio));
  50     mmio.fccIOProc = fname ? FOURCC_DOS : FOURCC_MEM;
  51     mmio.cchBuffer = sizeof(RIFF_buf);
  52     mmio.pchBuffer = (char *)RIFF_buf;
  53     hmmio = mmioOpen(fname, &mmio, MMIO_READ);
  54     if (fname && !hmmio)
  55     {
  56         trace("%s file is missing, skipping the test\n", fname);
  57         return;
  58     }
  59     ok(hmmio != 0, "mmioOpen error %u\n", mmio.wErrorRet);
  60
  61     /* first normal RIFF AVI parsing */
  62     ret = mmioDescend(hmmio, &ckRiff, NULL, 0);
  63     ok(ret == MMSYSERR_NOERROR, "mmioDescend error %u\n", ret);
  64     ok(ckRiff.ckid == FOURCC_RIFF, "wrong ckid: %04x\n", ckRiff.ckid);
  65     ok(ckRiff.fccType == formtypeAVI, "wrong fccType: %04x\n", ckRiff.fccType);
  66     trace("ckid %4.4s cksize %04x fccType %4.4s off %04x flags %04x\n",
  67           (LPCSTR)&ckRiff.ckid, ckRiff.cksize, (LPCSTR)&ckRiff.fccType,
  68           ckRiff.dwDataOffset, ckRiff.dwFlags);
  69
  70     ret = mmioDescend(hmmio, &ckList, &ckRiff, 0);
  71     ok(ret == MMSYSERR_NOERROR, "mmioDescend error %u\n", ret);
  72     ok(ckList.ckid == FOURCC_LIST, "wrong ckid: %04x\n", ckList.ckid);
  73     ok(ckList.fccType == listtypeAVIHEADER, "wrong fccType: %04x\n", ckList.fccType);
  74     trace("ckid %4.4s cksize %04x fccType %4.4s off %04x flags %04x\n",
  75           (LPCSTR)&ckList.ckid, ckList.cksize, (LPCSTR)&ckList.fccType,
  76           ckList.dwDataOffset, ckList.dwFlags);
  77
  78     ret = mmioDescend(hmmio, &ck, &ckList, 0);
  79     ok(ret == MMSYSERR_NOERROR, "mmioDescend error %u\n", ret);
  80     ok(ck.ckid == ckidAVIMAINHDR, "wrong ckid: %04x\n", ck.ckid);
  81     ok(ck.fccType == 0, "wrong fccType: %04x\n", ck.fccType);
  82     trace("ckid %4.4s cksize %04x fccType %4.4s off %04x flags %04x\n",
  83           (LPCSTR)&ck.ckid, ck.cksize, (LPCSTR)&ck.fccType,
  84           ck.dwDataOffset, ck.dwFlags);
  85
  86     /* test various mmioDescend flags */
  87
  88     mmioSeek(hmmio, 0, SEEK_SET);
  89     memset(&ck, 0x66, sizeof(ck));
  90     ret = mmioDescend(hmmio, &ck, NULL, MMIO_FINDRIFF);
  91     ok(ret == MMIOERR_CHUNKNOTFOUND ||
  92        ret == MMIOERR_INVALIDFILE, "mmioDescend returned %u\n", ret);
  93
  94     mmioSeek(hmmio, 0, SEEK_SET);
  95     memset(&ck, 0x66, sizeof(ck));
  96     ck.ckid = 0;
  97     ret = mmioDescend(hmmio, &ck, NULL, MMIO_FINDRIFF);
  98     ok(ret == MMIOERR_CHUNKNOTFOUND ||
  99        ret == MMIOERR_INVALIDFILE, "mmioDescend returned %u\n", ret);
 100
 101     mmioSeek(hmmio, 0, SEEK_SET);
 102     memset(&ck, 0x66, sizeof(ck));
 103     ck.fccType = 0;
 104     ret = mmioDescend(hmmio, &ck, NULL, MMIO_FINDRIFF);
 105     ok(ret == MMSYSERR_NOERROR, "mmioDescend error %u\n", ret);
 106     ok(ck.ckid == FOURCC_RIFF, "wrong ckid: %04x\n", ck.ckid);
 107     ok(ck.fccType == formtypeAVI, "wrong fccType: %04x\n", ck.fccType);
 108
 109     mmioSeek(hmmio, 0, SEEK_SET);
 110     memset(&ck, 0x66, sizeof(ck));
 111     ret = mmioDescend(hmmio, &ck, NULL, 0);
 112     ok(ret == MMSYSERR_NOERROR, "mmioDescend error %u\n", ret);
 113     ok(ck.ckid == FOURCC_RIFF, "wrong ckid: %04x\n", ck.ckid);
 114     ok(ck.fccType == formtypeAVI, "wrong fccType: %04x\n", ck.fccType);
 115
 116     /* do NOT seek, use current file position */
 117     memset(&ck, 0x66, sizeof(ck));
 118     ck.fccType = 0;
 119     ret = mmioDescend(hmmio, &ck, NULL, MMIO_FINDLIST);
 120     ok(ret == MMSYSERR_NOERROR, "mmioDescend error %u\n", ret);
 121     ok(ck.ckid == FOURCC_LIST, "wrong ckid: %04x\n", ck.ckid);
 122     ok(ck.fccType == listtypeAVIHEADER, "wrong fccType: %04x\n", ck.fccType);
 123
 124     mmioSeek(hmmio, 0, SEEK_SET);
 125     memset(&ck, 0x66, sizeof(ck));
 126     ck.ckid = 0;
 127     ck.fccType = listtypeAVIHEADER;
 128     ret = mmioDescend(hmmio, &ck, NULL, MMIO_FINDCHUNK);
 129     ok(ret == MMSYSERR_NOERROR, "mmioDescend error %u\n", ret);
 130     ok(ck.ckid == FOURCC_RIFF, "wrong ckid: %04x\n", ck.ckid);
 131     ok(ck.fccType == formtypeAVI, "wrong fccType: %04x\n", ck.fccType);
 132
 133     /* do NOT seek, use current file position */
 134     memset(&ck, 0x66, sizeof(ck));
 135     ck.ckid = FOURCC_LIST;
 136     ret = mmioDescend(hmmio, &ck, NULL, MMIO_FINDCHUNK);
 137     ok(ret == MMSYSERR_NOERROR, "mmioDescend error %u\n", ret);
 138     ok(ck.ckid == FOURCC_LIST, "wrong ckid: %04x\n", ck.ckid);
 139     ok(ck.fccType == listtypeAVIHEADER, "wrong fccType: %04x\n", ck.fccType);
 140
 141     mmioSeek(hmmio, 0, SEEK_SET);
 142     memset(&ck, 0x66, sizeof(ck));
 143     ck.ckid = FOURCC_RIFF;
 144     ret = mmioDescend(hmmio, &ck, NULL, MMIO_FINDCHUNK);
 145     ok(ret == MMSYSERR_NOERROR, "mmioDescend error %u\n", ret);
 146     ok(ck.ckid == FOURCC_RIFF, "wrong ckid: %04x\n", ck.ckid);
 147     ok(ck.fccType == formtypeAVI, "wrong fccType: %04x\n", ck.fccType);
 148
 149     /* do NOT seek, use current file position */
 150     memset(&ckList, 0x66, sizeof(ckList));
 151     ckList.ckid = 0;
 152     ret = mmioDescend(hmmio, &ckList, &ck, MMIO_FINDCHUNK);
 153     ok(ret == MMSYSERR_NOERROR, "mmioDescend error %u\n", ret);
 154     ok(ckList.ckid == FOURCC_LIST, "wrong ckid: %04x\n", ckList.ckid);
 155     ok(ckList.fccType == listtypeAVIHEADER, "wrong fccType: %04x\n", ckList.fccType);
 156
 157     mmioSeek(hmmio, 0, SEEK_SET);
 158     memset(&ck, 0x66, sizeof(ck));
 159     ret = mmioDescend(hmmio, &ck, NULL, MMIO_FINDCHUNK);
 160     ok(ret == MMIOERR_CHUNKNOTFOUND ||
 161        ret == MMIOERR_INVALIDFILE, "mmioDescend returned %u\n", ret);
 162     ok(ck.ckid != 0x66666666, "wrong ckid: %04x\n", ck.ckid);
 163     ok(ck.fccType != 0x66666666, "wrong fccType: %04x\n", ck.fccType);
 164     ok(ck.dwDataOffset != 0x66666666, "wrong dwDataOffset: %04x\n", ck.dwDataOffset);
 165
 166     mmioSeek(hmmio, 0, SEEK_SET);
 167     memset(&ck, 0x66, sizeof(ck));
 168     ret = mmioDescend(hmmio, &ck, NULL, MMIO_FINDRIFF);
 169     ok(ret == MMIOERR_CHUNKNOTFOUND ||
 170        ret == MMIOERR_INVALIDFILE, "mmioDescend returned %u\n", ret);
 171
 172     mmioClose(hmmio, 0);
 173 }
 174
 175 static void test_mmioOpen(char *fname)
 176 {
 177     char buf[256];
 178     MMRESULT ret;
 179     HMMIO hmmio;
 180     MMIOINFO mmio;
 181
 182     memset(&mmio, 0, sizeof(mmio));
 183     mmio.fccIOProc = fname ? FOURCC_DOS : FOURCC_MEM;
 184     mmio.cchBuffer = sizeof(buf);
 185     mmio.pchBuffer = buf;
 186     hmmio = mmioOpen(fname, &mmio, MMIO_READ);
 187     if (fname && !hmmio)
 188     {
 189         trace("%s file is missing, skipping the test\n", fname);
 190         return;
 191     }
 192     ok(hmmio != 0, "mmioOpen error %u\n", mmio.wErrorRet);
 193
 194     memset(&mmio, 0, sizeof(mmio));
 195     ret = mmioGetInfo(hmmio, &mmio, 0);
 196     ok(ret == MMSYSERR_NOERROR, "mmioGetInfo error %u\n", ret);
 197     ok(mmio.dwFlags == MMIO_READ, "expected MMIO_READ, got %x\n", mmio.dwFlags);
 198     ok(mmio.wErrorRet == MMSYSERR_NOERROR, "expected MMSYSERR_NOERROR, got %u\n", mmio.wErrorRet);
 199     ok(mmio.fccIOProc == (fname ? FOURCC_DOS : FOURCC_MEM), "got %4.4s\n", (LPCSTR)&mmio.fccIOProc);
 200     ok(mmio.cchBuffer == sizeof(buf), "got %u\n", mmio.cchBuffer);
 201     ok(mmio.pchBuffer == buf, "expected %p, got %p\n", buf, mmio.pchBuffer);
 202
 203     mmioClose(hmmio, 0);
 204
 205     memset(&mmio, 0, sizeof(mmio));
 206     mmio.fccIOProc = fname ? FOURCC_DOS : FOURCC_MEM;
 207     mmio.cchBuffer = 0;
 208     mmio.pchBuffer = buf;
 209     hmmio = mmioOpen(fname, &mmio, MMIO_READ);
 210     ok(hmmio != 0, "mmioOpen error %u\n", mmio.wErrorRet);
 211
 212     memset(&mmio, 0, sizeof(mmio));
 213     ret = mmioGetInfo(hmmio, &mmio, 0);
 214     ok(ret == MMSYSERR_NOERROR, "mmioGetInfo error %u\n", ret);
 215     ok(mmio.dwFlags == MMIO_READ, "expected MMIO_READ, got %x\n", mmio.dwFlags);
 216     ok(mmio.wErrorRet == MMSYSERR_NOERROR, "expected MMSYSERR_NOERROR, got %u\n", mmio.wErrorRet);
 217     ok(mmio.fccIOProc == (fname ? FOURCC_DOS : FOURCC_MEM), "got %4.4s\n", (LPCSTR)&mmio.fccIOProc);
 218     ok(mmio.cchBuffer == 0, "expected 0, got %u\n", mmio.cchBuffer);
 219     ok(mmio.pchBuffer == buf, "expected %p, got %p\n", buf, mmio.pchBuffer);
 220
 221     mmioClose(hmmio, 0);
 222
 223     memset(&mmio, 0, sizeof(mmio));
 224     mmio.fccIOProc = fname ? FOURCC_DOS : FOURCC_MEM;
 225     mmio.cchBuffer = 0;
 226     mmio.pchBuffer = NULL;
 227     hmmio = mmioOpen(fname, &mmio, MMIO_READ);
 228     ok(hmmio != 0, "mmioOpen error %u\n", mmio.wErrorRet);
 229
 230     memset(&mmio, 0, sizeof(mmio));
 231     ret = mmioGetInfo(hmmio, &mmio, 0);
 232     ok(ret == MMSYSERR_NOERROR, "mmioGetInfo error %u\n", ret);
 233     ok(mmio.dwFlags == MMIO_READ, "expected MMIO_READ, got %x\n", mmio.dwFlags);
 234     ok(mmio.wErrorRet == MMSYSERR_NOERROR, "expected MMSYSERR_NOERROR, got %u\n", mmio.wErrorRet);
 235     ok(mmio.fccIOProc == (fname ? FOURCC_DOS : FOURCC_MEM), "got %4.4s\n", (LPCSTR)&mmio.fccIOProc);
 236     ok(mmio.cchBuffer == 0, "expected 0, got %u\n", mmio.cchBuffer);
 237     ok(mmio.pchBuffer == NULL, "expected NULL\n");
 238
 239     mmioClose(hmmio, 0);
 240
 241     memset(&mmio, 0, sizeof(mmio));
 242     mmio.fccIOProc = fname ? FOURCC_DOS : FOURCC_MEM;
 243     mmio.cchBuffer = 256;
 244     mmio.pchBuffer = NULL;
 245     hmmio = mmioOpen(fname, &mmio, MMIO_READ);
 246     ok(hmmio != 0, "mmioOpen error %u\n", mmio.wErrorRet);
 247
 248     memset(&mmio, 0, sizeof(mmio));
 249     ret = mmioGetInfo(hmmio, &mmio, 0);
 250     ok(ret == MMSYSERR_NOERROR, "mmioGetInfo error %u\n", ret);
 251     ok(mmio.dwFlags == (MMIO_READ|MMIO_ALLOCBUF), "expected MMIO_READ|MMIO_ALLOCBUF, got %x\n", mmio.dwFlags);
 252     ok(mmio.wErrorRet == MMSYSERR_NOERROR, "expected MMSYSERR_NOERROR, got %u\n", mmio.wErrorRet);
 253     ok(mmio.fccIOProc == (fname ? FOURCC_DOS : FOURCC_MEM), "got %4.4s\n", (LPCSTR)&mmio.fccIOProc);
 254     ok(mmio.cchBuffer == 256, "expected 256, got %u\n", mmio.cchBuffer);
 255     ok(mmio.pchBuffer != NULL, "expected not NULL\n");
 256
 257     mmioClose(hmmio, 0);
 258
 259     memset(&mmio, 0, sizeof(mmio));
 260     mmio.fccIOProc = fname ? FOURCC_DOS : FOURCC_MEM;
 261     mmio.cchBuffer = sizeof(buf);
 262     mmio.pchBuffer = buf;
 263     hmmio = mmioOpen(fname, &mmio, MMIO_READ | MMIO_ALLOCBUF);
 264     ok(hmmio != 0, "mmioOpen error %u\n", mmio.wErrorRet);
 265
 266     memset(&mmio, 0, sizeof(mmio));
 267     ret = mmioGetInfo(hmmio, &mmio, 0);
 268     ok(ret == MMSYSERR_NOERROR, "mmioGetInfo error %u\n", ret);
 269     ok(mmio.dwFlags == MMIO_READ, "expected MMIO_READ, got %x\n", mmio.dwFlags);
 270     ok(mmio.wErrorRet == MMSYSERR_NOERROR, "expected MMSYSERR_NOERROR, got %u\n", mmio.wErrorRet);
 271     ok(mmio.fccIOProc == (fname ? FOURCC_DOS : FOURCC_MEM), "got %4.4s\n", (LPCSTR)&mmio.fccIOProc);
 272     ok(mmio.cchBuffer == sizeof(buf), "got %u\n", mmio.cchBuffer);
 273     ok(mmio.pchBuffer == buf, "expected %p, got %p\n", buf, mmio.pchBuffer);
 274
 275     mmioClose(hmmio, 0);
 276
 277     memset(&mmio, 0, sizeof(mmio));
 278     mmio.fccIOProc = fname ? FOURCC_DOS : FOURCC_MEM;
 279     mmio.cchBuffer = 0;
 280     mmio.pchBuffer = buf;
 281     hmmio = mmioOpen(fname, &mmio, MMIO_READ | MMIO_ALLOCBUF);
 282     ok(hmmio != 0, "mmioOpen error %u\n", mmio.wErrorRet);
 283
 284     memset(&mmio, 0, sizeof(mmio));
 285     ret = mmioGetInfo(hmmio, &mmio, 0);
 286     ok(ret == MMSYSERR_NOERROR, "mmioGetInfo error %u\n", ret);
 287     ok(mmio.dwFlags == MMIO_READ, "expected MMIO_READ, got %x\n", mmio.dwFlags);
 288     ok(mmio.wErrorRet == MMSYSERR_NOERROR, "expected MMSYSERR_NOERROR, got %u\n", mmio.wErrorRet);
 289     ok(mmio.fccIOProc == (fname ? FOURCC_DOS : FOURCC_MEM), "got %4.4s\n", (LPCSTR)&mmio.fccIOProc);
 290     ok(mmio.cchBuffer == MMIO_DEFAULTBUFFER, "expected MMIO_DEFAULTBUFFER, got %u\n", mmio.cchBuffer);
 291     ok(mmio.pchBuffer == buf, "expected %p, got %p\n", buf, mmio.pchBuffer);
 292
 293     mmioClose(hmmio, 0);
 294
 295     memset(&mmio, 0, sizeof(mmio));
 296     mmio.fccIOProc = fname ? FOURCC_DOS : FOURCC_MEM;
 297     mmio.cchBuffer = 0;
 298     mmio.pchBuffer = NULL;
 299     hmmio = mmioOpen(fname, &mmio, MMIO_READ | MMIO_ALLOCBUF);
 300     ok(hmmio != 0, "mmioOpen error %u\n", mmio.wErrorRet);
 301
 302     memset(&mmio, 0, sizeof(mmio));
 303     ret = mmioGetInfo(hmmio, &mmio, 0);
 304     ok(ret == MMSYSERR_NOERROR, "mmioGetInfo error %u\n", ret);
 305     ok(mmio.dwFlags == (MMIO_READ|MMIO_ALLOCBUF), "expected MMIO_READ|MMIO_ALLOCBUF, got %x\n", mmio.dwFlags);
 306     ok(mmio.wErrorRet == MMSYSERR_NOERROR, "expected MMSYSERR_NOERROR, got %u\n", mmio.wErrorRet);
 307     ok(mmio.fccIOProc == (fname ? FOURCC_DOS : FOURCC_MEM), "got %4.4s\n", (LPCSTR)&mmio.fccIOProc);
 308     ok(mmio.cchBuffer == MMIO_DEFAULTBUFFER, "expected MMIO_DEFAULTBUFFER, got %u\n", mmio.cchBuffer);
 309     ok(mmio.pchBuffer != NULL, "expected not NULL\n");
 310
 311     mmioClose(hmmio, 0);
 312
 313     memset(&mmio, 0, sizeof(mmio));
 314     mmio.fccIOProc = fname ? FOURCC_DOS : FOURCC_MEM;
 315     mmio.cchBuffer = 256;
 316     mmio.pchBuffer = NULL;
 317     hmmio = mmioOpen(fname, &mmio, MMIO_READ | MMIO_ALLOCBUF);
 318     ok(hmmio != 0, "mmioOpen error %u\n", mmio.wErrorRet);
 319
 320     memset(&mmio, 0, sizeof(mmio));
 321     ret = mmioGetInfo(hmmio, &mmio, 0);
 322     ok(ret == MMSYSERR_NOERROR, "mmioGetInfo error %u\n", ret);
 323     ok(mmio.dwFlags == (MMIO_READ|MMIO_ALLOCBUF), "expected MMIO_READ|MMIO_ALLOCBUF, got %x\n", mmio.dwFlags);
 324     ok(mmio.wErrorRet == MMSYSERR_NOERROR, "expected MMSYSERR_NOERROR, got %u\n", mmio.wErrorRet);
 325     ok(mmio.fccIOProc == (fname ? FOURCC_DOS : FOURCC_MEM), "got %4.4s\n", (LPCSTR)&mmio.fccIOProc);
 326     ok(mmio.cchBuffer == 256, "expected 256, got %u\n", mmio.cchBuffer);
 327     ok(mmio.pchBuffer != NULL, "expected not NULL\n");
 328
 329     mmioClose(hmmio, 0);
 330 }
 331
 332 static void test_mmioSetBuffer(char *fname)
 333 {
 334     char buf[256];
 335     MMRESULT ret;
 336     HMMIO hmmio;
 337     MMIOINFO mmio;
 338
 339     memset(&mmio, 0, sizeof(mmio));
 340     mmio.fccIOProc = fname ? FOURCC_DOS : FOURCC_MEM;
 341     mmio.cchBuffer = sizeof(buf);
 342     mmio.pchBuffer = buf;
 343     hmmio = mmioOpen(fname, &mmio, MMIO_READ);
 344     if (fname && !hmmio)
 345     {
 346         trace("%s file is missing, skipping the test\n", fname);
 347         return;
 348     }
 349     ok(hmmio != 0, "mmioOpen error %u\n", mmio.wErrorRet);
 350
 351     memset(&mmio, 0, sizeof(mmio));
 352     ret = mmioGetInfo(hmmio, &mmio, 0);
 353     ok(ret == MMSYSERR_NOERROR, "mmioGetInfo error %u\n", ret);
 354     ok(mmio.dwFlags == MMIO_READ, "expected MMIO_READ, got %x\n", mmio.dwFlags);
 355     ok(mmio.wErrorRet == MMSYSERR_NOERROR, "expected MMSYSERR_NOERROR, got %u\n", mmio.wErrorRet);
 356     ok(mmio.fccIOProc == (fname ? FOURCC_DOS : FOURCC_MEM), "got %4.4s\n", (LPCSTR)&mmio.fccIOProc);
 357     ok(mmio.cchBuffer == sizeof(buf), "got %u\n", mmio.cchBuffer);
 358     ok(mmio.pchBuffer == buf, "expected %p, got %p\n", buf, mmio.pchBuffer);
 359
 360     ret = mmioSetBuffer(hmmio, NULL, 0, 0);
 361     ok(ret == MMSYSERR_NOERROR, "mmioSetBuffer error %u\n", ret);
 362
 363     memset(&mmio, 0, sizeof(mmio));
 364     ret = mmioGetInfo(hmmio, &mmio, 0);
 365     ok(ret == MMSYSERR_NOERROR, "mmioGetInfo error %u\n", ret);
 366     ok(mmio.dwFlags == MMIO_READ, "expected MMIO_READ, got %x\n", mmio.dwFlags);
 367     ok(mmio.wErrorRet == MMSYSERR_NOERROR, "expected MMSYSERR_NOERROR, got %u\n", mmio.wErrorRet);
 368     ok(mmio.fccIOProc == (fname ? FOURCC_DOS : FOURCC_MEM), "got %4.4s\n", (LPCSTR)&mmio.fccIOProc);
 369     ok(mmio.cchBuffer == 0, "got not 0\n");
 370     ok(mmio.pchBuffer == NULL, "got not NULL buf\n");
 371
 372     ret = mmioSetBuffer(hmmio, NULL, 0, MMIO_ALLOCBUF);
 373     ok(ret == MMSYSERR_NOERROR, "mmioSetBuffer error %u\n", ret);
 374
 375     memset(&mmio, 0, sizeof(mmio));
 376     ret = mmioGetInfo(hmmio, &mmio, 0);
 377     ok(ret == MMSYSERR_NOERROR, "mmioGetInfo error %u\n", ret);
 378     ok(mmio.dwFlags == MMIO_READ, "expected MMIO_READ, got %x\n", mmio.dwFlags);
 379     ok(mmio.wErrorRet == MMSYSERR_NOERROR, "expected MMSYSERR_NOERROR, got %u\n", mmio.wErrorRet);
 380     ok(mmio.fccIOProc == (fname ? FOURCC_DOS : FOURCC_MEM), "got %4.4s\n", (LPCSTR)&mmio.fccIOProc);
 381     ok(mmio.cchBuffer == 0, "got not 0\n");
 382     ok(mmio.pchBuffer == NULL, "got not NULL buf\n");
 383
 384     ret = mmioSetBuffer(hmmio, buf, 0, MMIO_ALLOCBUF);
 385     ok(ret == MMSYSERR_NOERROR, "mmioSetBuffer error %u\n", ret);
 386
 387     memset(&mmio, 0, sizeof(mmio));
 388     ret = mmioGetInfo(hmmio, &mmio, 0);
 389     ok(ret == MMSYSERR_NOERROR, "mmioGetInfo error %u\n", ret);
 390     ok(mmio.dwFlags == MMIO_READ, "expected MMIO_READ, got %x\n", mmio.dwFlags);
 391     ok(mmio.wErrorRet == MMSYSERR_NOERROR, "expected MMSYSERR_NOERROR, got %u\n", mmio.wErrorRet);
 392     ok(mmio.fccIOProc == (fname ? FOURCC_DOS : FOURCC_MEM), "got %4.4s\n", (LPCSTR)&mmio.fccIOProc);
 393     ok(mmio.cchBuffer == 0, "got not 0\n");
 394     ok(mmio.pchBuffer == buf, "expected %p, got %p\n", buf, mmio.pchBuffer);
 395
 396     ret = mmioSetBuffer(hmmio, NULL, 256, MMIO_WRITE|MMIO_ALLOCBUF);
 397     ok(ret == MMSYSERR_NOERROR, "mmioSetBuffer error %u\n", ret);
 398
 399     memset(&mmio, 0, sizeof(mmio));
 400     ret = mmioGetInfo(hmmio, &mmio, 0);
 401     ok(ret == MMSYSERR_NOERROR, "mmioGetInfo error %u\n", ret);
 402     ok(mmio.dwFlags == (MMIO_READ|MMIO_ALLOCBUF), "expected MMIO_READ|MMIO_ALLOCBUF, got %x\n", mmio.dwFlags);
 403     ok(mmio.wErrorRet == MMSYSERR_NOERROR, "expected MMSYSERR_NOERROR, got %u\n", mmio.wErrorRet);
 404     ok(mmio.fccIOProc == (fname ? FOURCC_DOS : FOURCC_MEM), "got %4.4s\n", (LPCSTR)&mmio.fccIOProc);
 405     ok(mmio.cchBuffer == 256, "got %u\n", mmio.cchBuffer);
 406     ok(mmio.pchBuffer != NULL, "expected not NULL\n");
 407     ok(mmio.pchBuffer != buf, "expected != buf\n");
 408
 409     mmioClose(hmmio, 0);
 410 }
 411
 412 START_TEST(mmio)
 413 {
 414     char fname[] = "msrle.avi";
 415
 416     test_mmioDescend(NULL);
 417     test_mmioDescend(fname);
 418     test_mmioOpen(NULL);
 419     test_mmioOpen(fname);
 420     test_mmioSetBuffer(NULL);
 421     test_mmioSetBuffer(fname);
 422 }