ACM codec [MS ADPCM]
Eric Pouech
eric.pouech at wanadoo.fr
Mon May 20 14:50:26 CDT 2002
this patch implements the MS ADPCM ACM codec
(Alexandre, please re-generate the dlls/Makefile.in (with all
the ACM codecs coming, it's simpler this way. TIA)
A+
-------------- next part --------------
Name: msadpcm
ChangeLog: created an ACM MS ADPCM codec
License: X11
GenDate: 2002/05/20 19:32:55 UTC
ModifiedFiles: configure.ac dlls/Makefile.in documentation/samples/system.ini
AddedFiles: dlls/msacm/msadp32/.cvsignore dlls/msacm/msadp32/Makefile.in dlls/msacm/msadp32/msadp32.acm.spec dlls/msacm/msadp32/msadp32.c
===================================================================
RCS file: /home/cvs/cvsroot/wine/wine/configure.ac,v
retrieving revision 1.40
diff -u -u -r1.40 configure.ac
--- configure.ac 14 May 2002 23:18:24 -0000 1.40
+++ configure.ac 20 May 2002 07:23:38 -0000
@@ -1327,15 +1328,16 @@
dlls/mpr/Makefile
dlls/msacm/Makefile
dlls/msacm/imaadp32/Makefile
+dlls/msacm/msadp32/Makefile
dlls/msacm/msg711/Makefile
dlls/msdmo/Makefile
dlls/msimg32/Makefile
dlls/msisys/Makefile
dlls/msnet32/Makefile
dlls/msrle32/Makefile
dlls/msvcrt/Makefile
dlls/msvcrt20/Makefile
dlls/msvideo/Makefile
dlls/netapi32/Makefile
dlls/ntdll/Makefile
dlls/odbc32/Makefile
Index: dlls/Makefile.in
===================================================================
RCS file: /home/cvs/cvsroot/wine/wine/dlls/Makefile.in,v
retrieving revision 1.131
diff -u -u -r1.131 Makefile.in
--- dlls/Makefile.in 17 May 2002 04:32:20 -0000 1.131
+++ dlls/Makefile.in 20 May 2002 07:19:34 -0000
@@ -40,15 +41,16 @@
mpr \
msacm \
msacm/imaadp32 \
+ msacm/msadp32 \
msacm/msg711 \
msdmo \
msimg32 \
msisys \
msnet32 \
msrle32 \
msvcrt \
msvcrt20 \
msvideo \
netapi32 \
ntdll \
odbc32 \
@@ -155,8 +161,9 @@
msacm.dll$(DLLEXT) \
msacm.drv$(DLLEXT) \
msacm32.dll$(DLLEXT) \
+ msadp32.acm$(DLLEXT) \
msdmo.dll$(DLLEXT) \
msimg32.dll$(DLLEXT) \
msisys.ocx$(DLLEXT) \
msnet32.dll$(DLLEXT) \
Index: documentation/samples/system.ini
===================================================================
RCS file: /home/cvs/cvsroot/wine/wine/documentation/samples/system.ini,v
retrieving revision 1.6
diff -u -u -r1.6 system.ini
--- documentation/samples/system.ini 11 May 2002 22:57:40 -0000 1.6
+++ documentation/samples/system.ini 12 May 2002 05:54:56 -0000
@@ -8,4 +8,5 @@
MPEGVideo=mciqtz.drv
[drivers32]
+MSACM.msadpcm=msadp32.acm
--- /dev/null Thu Jan 1 01:00:00 1970
+++ dlls/msacm/msadp32/.cvsignore Wed May 15 21:51:43 2002
@@ -0,0 +1,3 @@
+Makefile
+msadp32.acm.dbg.c
+msadp32.acm.spec.c
--- /dev/null Thu Jan 1 01:00:00 1970
+++ dlls/msacm/msadp32/Makefile.in Wed May 15 22:07:00 2002
@@ -0,0 +1,16 @@
+TOPSRCDIR = @top_srcdir@
+TOPOBJDIR = ../../..
+SRCDIR = @srcdir@
+VPATH = @srcdir@
+MODULE = msadp32.acm
+IMPORTS = winmm kernel32 ntdll
+DELAYIMPORTS=user32
+
+LDDLLFLAGS = @LDDLLFLAGS@
+SYMBOLFILE = $(MODULE).tmp.o
+
+C_SRCS = msadp32.c
+
+ at MAKE_DLL_RULES@
+
+### Dependencies:
--- /dev/null Thu Jan 1 01:00:00 1970
+++ dlls/msacm/msadp32/msadp32.acm.spec Wed May 15 21:32:40 2002
@@ -0,0 +1,4 @@
+name msadp32
+file msadp32.acm
+
+@ stdcall DriverProc (long long long long long) ADPCM_DriverProc
--- /dev/null Thu Jan 1 01:00:00 1970
+++ dlls/msacm/msadp32/msadp32.c Sat May 18 06:28:17 2002
@@ -0,0 +1,776 @@
+/*
+ * MS ADPCM handling
+ *
+ * Copyright (C) 2002 Eric Pouech
+ *
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <assert.h>
+#include <string.h>
+#include "winnls.h"
+#include "winbase.h"
+#include "wingdi.h"
+#include "winuser.h"
+#include "msacm.h"
+#include "mmreg.h"
+#include "../msacmdrv.h"
+#include "wine/debug.h"
+
+/* see http://www.pcisys.net/~melanson/codecs/adpcm.txt for the details */
+
+WINE_DEFAULT_DEBUG_CHANNEL(adpcm);
+
+/***********************************************************************
+ * ADPCM_drvOpen
+ */
+static DWORD ADPCM_drvOpen(LPCSTR str)
+{
+ return 1;
+}
+
+/***********************************************************************
+ * ADPCM_drvClose
+ */
+static DWORD ADPCM_drvClose(DWORD dwDevID)
+{
+ return 1;
+}
+
+typedef struct tagAcmAdpcmData
+{
+ void (*convert)(PACMDRVSTREAMINSTANCE adsi,
+ const unsigned char*, LPDWORD, unsigned char*, LPDWORD);
+} AcmAdpcmData;
+
+/* table to list all supported formats... those are the basic ones. this
+ * also helps given a unique index to each of the supported formats
+ */
+typedef struct
+{
+ int nChannels;
+ int nBits;
+ int rate;
+} Format;
+
+static Format PCM_Formats[] =
+{
+ {1, 8, 8000}, {2, 8, 8000}, {1, 16, 8000}, {2, 16, 8000},
+ {1, 8, 11025}, {2, 8, 11025}, {1, 16, 11025}, {2, 16, 11025},
+ {1, 8, 22050}, {2, 8, 22050}, {1, 16, 22050}, {2, 16, 22050},
+ {1, 8, 44100}, {2, 8, 44100}, {1, 16, 44100}, {2, 16, 44100},
+};
+
+static Format ADPCM_Formats[] =
+{
+ {1, 4, 8000}, {2, 4, 8000}, {1, 4, 11025}, {2, 4, 11025},
+ {1, 4, 22050}, {2, 4, 22050}, {1, 4, 44100}, {2, 4, 44100},
+};
+
+#define NUM_PCM_FORMATS (sizeof(PCM_Formats) / sizeof(PCM_Formats[0]))
+#define NUM_ADPCM_FORMATS (sizeof(ADPCM_Formats) / sizeof(ADPCM_Formats[0]))
+
+static int MS_Delta[] =
+{
+ 230, 230, 230, 230, 307, 409, 512, 614,
+ 768, 614, 512, 409, 307, 230, 230, 230
+};
+
+
+static ADPCMCOEFSET MSADPCM_CoeffSet[] =
+{
+ {256, 0}, {512, -256}, {0, 0}, {192, 64}, {240, 0}, {460, -208}, {392, -232}
+};
+
+/***********************************************************************
+ * ADPCM_GetFormatIndex
+ */
+static DWORD ADPCM_GetFormatIndex(WAVEFORMATEX* wfx)
+{
+ int i, hi;
+ Format* fmts;
+
+ switch (wfx->wFormatTag)
+ {
+ case WAVE_FORMAT_PCM:
+ hi = NUM_PCM_FORMATS;
+ fmts = PCM_Formats;
+ break;
+ case WAVE_FORMAT_ADPCM:
+ hi = NUM_ADPCM_FORMATS;
+ fmts = ADPCM_Formats;
+ break;
+ default:
+ return 0xFFFFFFFF;
+ }
+
+ for (i = 0; i < hi; i++)
+ {
+ if (wfx->nChannels == fmts[i].nChannels &&
+ wfx->nSamplesPerSec == fmts[i].rate &&
+ wfx->wBitsPerSample == fmts[i].nBits)
+ return i;
+ }
+
+ return 0xFFFFFFFF;
+}
+
+static void init_wfx_adpcm(ADPCMWAVEFORMAT* awfx)
+{
+ register WAVEFORMATEX* pwfx = &awfx->wfx;
+
+ /* we assume wFormatTag, nChannels, nSamplesPerSec and wBitsPerSample
+ * have been initialized... */
+
+ if (pwfx->wFormatTag != WAVE_FORMAT_ADPCM) {FIXME("wrong FT\n"); return;}
+ if (ADPCM_GetFormatIndex(pwfx) == 0xFFFFFFFF) {FIXME("wrong fmt\n"); return;}
+
+ switch (pwfx->nSamplesPerSec)
+ {
+ case 8000: pwfx->nBlockAlign = 256; break;
+ case 11025: pwfx->nBlockAlign = 256; break;
+ case 22050: pwfx->nBlockAlign = 512; break;
+ default:
+ case 44100: pwfx->nBlockAlign = 1024; break;
+ }
+ pwfx->cbSize = 2 * sizeof(WORD) + 7 * sizeof(ADPCMCOEFSET);
+ /* 7 is the size of the block head (which contains two samples) */
+
+ awfx->wSamplesPerBlock = (pwfx->nBlockAlign - (7 * pwfx->nChannels)) * (2 / pwfx->nChannels) + 2;
+ pwfx->nAvgBytesPerSec = (pwfx->nSamplesPerSec * pwfx->nBlockAlign) / awfx->wSamplesPerBlock;
+ awfx->wNumCoef = 7;
+ memcpy(awfx->aCoef, MSADPCM_CoeffSet, 7 * sizeof(ADPCMCOEFSET));
+}
+
+/***********************************************************************
+ * R16
+ *
+ * Read a 16 bit sample (correctly handles endianess)
+ */
+static inline short R16(const unsigned char* src)
+{
+ return (short)((unsigned short)src[0] | ((unsigned short)src[1] << 8));
+}
+
+/***********************************************************************
+ * W16
+ *
+ * Write a 16 bit sample (correctly handles endianess)
+ */
+static inline void W16(unsigned char* dst, short s)
+{
+ dst[0] = LOBYTE(s);
+ dst[1] = HIBYTE(s);
+}
+
+static inline void clamp_sample(int* sample)
+{
+ if (*sample < -32768) *sample = -32768;
+ if (*sample > 32767) *sample = 32767;
+}
+
+static inline void process_nibble(unsigned nibble, int* idelta,
+ int* sample1, int* sample2,
+ const ADPCMCOEFSET* coeff)
+{
+ int sample;
+ int snibble;
+
+ /* nibble is in fact a signed 4 bit integer => propagate sign if needed */
+ snibble = (nibble & 0x08) ? (nibble - 16) : nibble;
+ sample = ((*sample1 * coeff->iCoef1) + (*sample2 * coeff->iCoef2)) / 256 +
+ snibble * *idelta;
+ clamp_sample(&sample);
+
+ *sample2 = *sample1;
+ *sample1 = sample;
+ *idelta = ((MS_Delta[nibble] * *idelta) / 256);
+ if (*idelta < 16) *idelta = 16;
+}
+
+static void cvtSSms16K(PACMDRVSTREAMINSTANCE adsi,
+ const unsigned char* src, LPDWORD nsrc,
+ unsigned char* dst, LPDWORD ndst)
+{
+ int ideltaL, ideltaR;
+ int sample1L, sample2L;
+ int sample1R, sample2R;
+ ADPCMCOEFSET coeffL, coeffR;
+ int nsamp;
+ int nsamp_blk = ((ADPCMWAVEFORMAT*)adsi->pwfxSrc)->wSamplesPerBlock;
+ DWORD nblock = min(*nsrc / adsi->pwfxSrc->nBlockAlign,
+ *ndst / (nsamp_blk * 2 * 2));
+
+ *nsrc = nblock * adsi->pwfxSrc->nBlockAlign;
+ *ndst = nblock * nsamp_blk * 2 * 2;
+
+ nsamp_blk -= 2; /* see below for samples from block head */
+ for (; nblock > 0; nblock--)
+ {
+ const unsigned char* in_src = src;
+
+ assert(*src <= 6);
+ coeffL = MSADPCM_CoeffSet[*src++];
+ assert(*src <= 6);
+ coeffR = MSADPCM_CoeffSet[*src++];
+
+ ideltaL = R16(src); src += 2;
+ ideltaR = R16(src); src += 2;
+ sample1L = R16(src); src += 2;
+ sample1R = R16(src); src += 2;
+ sample2L = R16(src); src += 2;
+ sample2R = R16(src); src += 2;
+
+ /* store samples from block head */
+ W16(dst, sample2L); dst += 2;
+ W16(dst, sample2R); dst += 2;
+ W16(dst, sample1L); dst += 2;
+ W16(dst, sample1R); dst += 2;
+
+ for (nsamp = nsamp_blk; nsamp > 0; nsamp--)
+ {
+ process_nibble(*src >> 4, &ideltaL, &sample1L, &sample2L, &coeffL);
+ W16(dst, sample1L); dst += 2;
+ process_nibble(*src++ & 0x0F, &ideltaR, &sample1R, &sample2R, &coeffR);
+ W16(dst, sample1R); dst += 2;
+ }
+ src = in_src + adsi->pwfxSrc->nBlockAlign;
+ }
+}
+
+static void cvtMMms16K(PACMDRVSTREAMINSTANCE adsi,
+ const unsigned char* src, LPDWORD nsrc,
+ unsigned char* dst, LPDWORD ndst)
+{
+ int idelta;
+ int sample1, sample2;
+ ADPCMCOEFSET coeff;
+ int nsamp;
+ int nsamp_blk = ((ADPCMWAVEFORMAT*)adsi->pwfxSrc)->wSamplesPerBlock;
+ DWORD nblock = min(*nsrc / adsi->pwfxSrc->nBlockAlign,
+ *ndst / (nsamp_blk * 2));
+
+ *nsrc = nblock * adsi->pwfxSrc->nBlockAlign;
+ *ndst = nblock * nsamp_blk * 2;
+
+ nsamp_blk -= 2; /* see below for samples from block head */
+ for (; nblock > 0; nblock--)
+ {
+ const unsigned char* in_src = src;
+
+ assert(*src <= 6);
+ coeff = MSADPCM_CoeffSet[*src++];
+
+ idelta = R16(src); src += 2;
+ sample1 = R16(src); src += 2;
+ sample2 = R16(src); src += 2;
+
+ /* store samples from block head */
+ W16(dst, sample2); dst += 2;
+ W16(dst, sample1); dst += 2;
+
+ for (nsamp = nsamp_blk; nsamp > 0; nsamp -= 2)
+ {
+ process_nibble(*src >> 4, &idelta, &sample1, &sample2, &coeff);
+ W16(dst, sample1); dst += 2;
+ process_nibble(*src++ & 0x0F, &idelta, &sample1, &sample2, &coeff);
+ W16(dst, sample1); dst += 2;
+ }
+ src = in_src + adsi->pwfxSrc->nBlockAlign;
+ }
+}
+
+#if 0
+static void cvtSS16msK(PACMDRVSTREAMINSTANCE adsi,
+ const unsigned char* src, LPDWORD nsrc,
+ unsigned char* dst, LPDWORD ndst)
+{
+}
+
+static void cvtMM16msK(PACMDRVSTREAMINSTANCE adsi,
+ const unsigned char* src, LPDWORD nsrc,
+ unsigned char* dst, LPDWORD ndst)
+{
+}
+#endif
+
+/***********************************************************************
+ * ADPCM_DriverDetails
+ *
+ */
+static LRESULT ADPCM_DriverDetails(PACMDRIVERDETAILSW add)
+{
+ add->fccType = ACMDRIVERDETAILS_FCCTYPE_AUDIOCODEC;
+ add->fccComp = ACMDRIVERDETAILS_FCCCOMP_UNDEFINED;
+ add->wMid = 0xFF;
+ add->wPid = 0x00;
+ add->vdwACM = 0x01000000;
+ add->vdwDriver = 0x01000000;
+ add->fdwSupport = ACMDRIVERDETAILS_SUPPORTF_CODEC;
+ add->cFormatTags = 2; /* PCM, MS ADPCM */
+ add->cFilterTags = 0;
+ add->hicon = (HICON)0;
+ MultiByteToWideChar( CP_ACP, 0, "WINE-MS ADPCM", -1,
+ add->szShortName, sizeof(add->szShortName)/sizeof(WCHAR) );
+ MultiByteToWideChar( CP_ACP, 0, "Wine MS ADPCM converter", -1,
+ add->szLongName, sizeof(add->szLongName)/sizeof(WCHAR) );
+ MultiByteToWideChar( CP_ACP, 0, "Brought to you by the Wine team...", -1,
+ add->szCopyright, sizeof(add->szCopyright)/sizeof(WCHAR) );
+ MultiByteToWideChar( CP_ACP, 0, "Refer to LICENSE file", -1,
+ add->szLicensing, sizeof(add->szLicensing)/sizeof(WCHAR) );
+ add->szFeatures[0] = 0;
+
+ return MMSYSERR_NOERROR;
+}
+
+/***********************************************************************
+ * ADPCM_FormatTagDetails
+ *
+ */
+static LRESULT ADPCM_FormatTagDetails(PACMFORMATTAGDETAILSW aftd, DWORD dwQuery)
+{
+ static WCHAR szPcm[]={'P','C','M',0};
+ static WCHAR szMsAdPcm[]={'M','S',' ','A','d','P','C','M',0};
+
+ switch (dwQuery)
+ {
+ case ACM_FORMATTAGDETAILSF_INDEX:
+ if (aftd->dwFormatTagIndex >= 2) return ACMERR_NOTPOSSIBLE;
+ break;
+ case ACM_FORMATTAGDETAILSF_LARGESTSIZE:
+ if (aftd->dwFormatTag == WAVE_FORMAT_UNKNOWN)
+ {
+ aftd->dwFormatTagIndex = 1; /* WAVE_FORMAT_ADPCM is bigger than PCM */
+ break;
+ }
+ /* fall thru */
+ case ACM_FORMATTAGDETAILSF_FORMATTAG:
+ switch (aftd->dwFormatTag)
+ {
+ case WAVE_FORMAT_PCM: aftd->dwFormatTagIndex = 0; break;
+ case WAVE_FORMAT_ADPCM: aftd->dwFormatTagIndex = 1; break;
+ default: return ACMERR_NOTPOSSIBLE;
+ }
+ break;
+ default:
+ WARN("Unsupported query %08lx\n", dwQuery);
+ return MMSYSERR_NOTSUPPORTED;
+ }
+
+ aftd->fdwSupport = ACMDRIVERDETAILS_SUPPORTF_CODEC;
+ switch (aftd->dwFormatTagIndex)
+ {
+ case 0:
+ aftd->dwFormatTag = WAVE_FORMAT_PCM;
+ aftd->cbFormatSize = sizeof(PCMWAVEFORMAT);
+ aftd->cStandardFormats = NUM_PCM_FORMATS;
+ lstrcpyW(aftd->szFormatTag, szPcm);
+ break;
+ case 1:
+ aftd->dwFormatTag = WAVE_FORMAT_ADPCM;
+ aftd->cbFormatSize = sizeof(ADPCMWAVEFORMAT) + (7 - 1) * sizeof(ADPCMCOEFSET);
+ aftd->cStandardFormats = NUM_ADPCM_FORMATS;
+ lstrcpyW(aftd->szFormatTag, szMsAdPcm);
+ break;
+ }
+ return MMSYSERR_NOERROR;
+}
+
+/***********************************************************************
+ * ADPCM_FormatDetails
+ *
+ */
+static LRESULT ADPCM_FormatDetails(PACMFORMATDETAILSW afd, DWORD dwQuery)
+{
+ switch (dwQuery)
+ {
+ case ACM_FORMATDETAILSF_FORMAT:
+ if (ADPCM_GetFormatIndex(afd->pwfx) == 0xFFFFFFFF) return ACMERR_NOTPOSSIBLE;
+ break;
+ case ACM_FORMATDETAILSF_INDEX:
+ afd->pwfx->wFormatTag = afd->dwFormatTag;
+ switch (afd->dwFormatTag)
+ {
+ case WAVE_FORMAT_PCM:
+ if (afd->dwFormatIndex >= NUM_PCM_FORMATS) return ACMERR_NOTPOSSIBLE;
+ afd->pwfx->nChannels = PCM_Formats[afd->dwFormatIndex].nChannels;
+ afd->pwfx->nSamplesPerSec = PCM_Formats[afd->dwFormatIndex].rate;
+ afd->pwfx->wBitsPerSample = PCM_Formats[afd->dwFormatIndex].nBits;
+ /* native MSACM uses a PCMWAVEFORMAT structure, so cbSize is not accessible
+ * afd->pwfx->cbSize = 0;
+ */
+ afd->pwfx->nBlockAlign =
+ (afd->pwfx->nChannels * afd->pwfx->wBitsPerSample) / 8;
+ afd->pwfx->nAvgBytesPerSec =
+ afd->pwfx->nSamplesPerSec * afd->pwfx->nBlockAlign;
+ break;
+ case WAVE_FORMAT_ADPCM:
+ if (afd->dwFormatIndex >= NUM_ADPCM_FORMATS) return ACMERR_NOTPOSSIBLE;
+ if (afd->cbwfx < sizeof(ADPCMWAVEFORMAT) + (7 - 1) * sizeof(ADPCMCOEFSET))
+ return ACMERR_NOTPOSSIBLE;
+ afd->pwfx->nChannels = ADPCM_Formats[afd->dwFormatIndex].nChannels;
+ afd->pwfx->nSamplesPerSec = ADPCM_Formats[afd->dwFormatIndex].rate;
+ afd->pwfx->wBitsPerSample = ADPCM_Formats[afd->dwFormatIndex].nBits;
+ init_wfx_adpcm((ADPCMWAVEFORMAT*)afd->pwfx);
+ break;
+ default:
+ WARN("Unsupported tag %08lx\n", afd->dwFormatTag);
+ return MMSYSERR_INVALPARAM;
+ }
+ break;
+ default:
+ WARN("Unsupported query %08lx\n", dwQuery);
+ return MMSYSERR_NOTSUPPORTED;
+ }
+ afd->fdwSupport = ACMDRIVERDETAILS_SUPPORTF_CODEC;
+ afd->szFormat[0] = 0; /* let MSACM format this for us... */
+
+ return MMSYSERR_NOERROR;
+}
+
+/***********************************************************************
+ * ADPCM_FormatSuggest
+ *
+ */
+static LRESULT ADPCM_FormatSuggest(PACMDRVFORMATSUGGEST adfs)
+{
+ /* some tests ... */
+ if (adfs->cbwfxSrc < sizeof(PCMWAVEFORMAT) ||
+ adfs->cbwfxDst < sizeof(PCMWAVEFORMAT) ||
+ ADPCM_GetFormatIndex(adfs->pwfxSrc) == 0xFFFFFFFF) return ACMERR_NOTPOSSIBLE;
+ /* FIXME: should do those tests against the real size (according to format tag */
+
+ /* If no suggestion for destination, then copy source value */
+ if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_NCHANNELS))
+ adfs->pwfxDst->nChannels = adfs->pwfxSrc->nChannels;
+ if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_NSAMPLESPERSEC))
+ adfs->pwfxDst->nSamplesPerSec = adfs->pwfxSrc->nSamplesPerSec;
+
+ if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_WBITSPERSAMPLE))
+ {
+ if (adfs->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM)
+ adfs->pwfxDst->wBitsPerSample = 4;
+ else
+ adfs->pwfxDst->wBitsPerSample = 16;
+ }
+ if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_WFORMATTAG))
+ {
+ if (adfs->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM)
+ adfs->pwfxDst->wFormatTag = WAVE_FORMAT_ADPCM;
+ else
+ adfs->pwfxDst->wFormatTag = WAVE_FORMAT_PCM;
+ }
+
+ /* check if result is ok */
+ if (ADPCM_GetFormatIndex(adfs->pwfxDst) == 0xFFFFFFFF) return ACMERR_NOTPOSSIBLE;
+
+ /* recompute other values */
+ switch (adfs->pwfxDst->wFormatTag)
+ {
+ case WAVE_FORMAT_PCM:
+ adfs->pwfxDst->nBlockAlign = (adfs->pwfxDst->nChannels * adfs->pwfxDst->wBitsPerSample) / 8;
+ adfs->pwfxDst->nAvgBytesPerSec = adfs->pwfxDst->nSamplesPerSec * adfs->pwfxDst->nBlockAlign;
+ break;
+ case WAVE_FORMAT_ADPCM:
+ init_wfx_adpcm((ADPCMWAVEFORMAT*)adfs->pwfxDst);
+ break;
+ default:
+ FIXME("\n");
+ break;
+ }
+
+ return MMSYSERR_NOERROR;
+}
+
+/***********************************************************************
+ * ADPCM_Reset
+ *
+ */
+static void ADPCM_Reset(PACMDRVSTREAMINSTANCE adsi, AcmAdpcmData* aad)
+{
+}
+
+/***********************************************************************
+ * ADPCM_StreamOpen
+ *
+ */
+static LRESULT ADPCM_StreamOpen(PACMDRVSTREAMINSTANCE adsi)
+{
+ AcmAdpcmData* aad;
+ unsigned nspb;
+
+ assert(!(adsi->fdwOpen & ACM_STREAMOPENF_ASYNC));
+
+ if (ADPCM_GetFormatIndex(adsi->pwfxSrc) == 0xFFFFFFFF ||
+ ADPCM_GetFormatIndex(adsi->pwfxDst) == 0xFFFFFFFF)
+ return ACMERR_NOTPOSSIBLE;
+
+ aad = HeapAlloc(GetProcessHeap(), 0, sizeof(AcmAdpcmData));
+ if (aad == 0) return MMSYSERR_NOMEM;
+
+ adsi->dwDriver = (DWORD)aad;
+
+ if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM &&
+ adsi->pwfxDst->wFormatTag == WAVE_FORMAT_PCM)
+ {
+ goto theEnd;
+ }
+ else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_ADPCM &&
+ adsi->pwfxDst->wFormatTag == WAVE_FORMAT_PCM)
+ {
+ /* resampling or mono <=> stereo not available
+ * ADPCM algo only define 16 bit per sample output
+ */
+ if (adsi->pwfxSrc->nSamplesPerSec != adsi->pwfxDst->nSamplesPerSec ||
+ adsi->pwfxSrc->nChannels != adsi->pwfxDst->nChannels ||
+ adsi->pwfxDst->wBitsPerSample != 16)
+ goto theEnd;
+#if 0
+ nspb = ((IMAADPCMWAVEFORMAT*)adsi->pwfxSrc)->wSamplesPerBlock;
+ FIXME("spb=%u\n", nspb);
+
+ /* we check that in a block, after the header, samples are present on
+ * 4-sample packet pattern
+ * we also check that the block alignement is bigger than the expected size
+ */
+ if (((nspb - 1) & 3) != 0) goto theEnd;
+ if ((((nspb - 1) / 2) + 4) * adsi->pwfxSrc->nChannels < adsi->pwfxSrc->nBlockAlign)
+ goto theEnd;
+#endif
+
+ /* adpcm decoding... */
+ if (adsi->pwfxDst->wBitsPerSample == 16 && adsi->pwfxDst->nChannels == 2)
+ aad->convert = cvtSSms16K;
+ if (adsi->pwfxDst->wBitsPerSample == 16 && adsi->pwfxDst->nChannels == 1)
+ aad->convert = cvtMMms16K;
+ }
+ else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM &&
+ adsi->pwfxDst->wFormatTag == WAVE_FORMAT_ADPCM)
+ {
+ if (adsi->pwfxSrc->nSamplesPerSec != adsi->pwfxDst->nSamplesPerSec ||
+ adsi->pwfxSrc->nChannels != adsi->pwfxDst->nChannels ||
+ adsi->pwfxSrc->wBitsPerSample != 16)
+ goto theEnd;
+#if 0
+ nspb = ((IMAADPCMWAVEFORMAT*)adsi->pwfxDst)->wSamplesPerBlock;
+ FIXME("spb=%u\n", nspb);
+
+ /* we check that in a block, after the header, samples are present on
+ * 4-sample packet pattern
+ * we also check that the block alignement is bigger than the expected size
+ */
+ if (((nspb - 1) & 3) != 0) goto theEnd;
+ if ((((nspb - 1) / 2) + 4) * adsi->pwfxDst->nChannels < adsi->pwfxDst->nBlockAlign)
+ goto theEnd;
+#endif
+#if 0
+ /* adpcm coding... */
+ if (adsi->pwfxSrc->wBitsPerSample == 16 && adsi->pwfxSrc->nChannels == 2)
+ aad->convert = cvtSS16msK;
+ if (adsi->pwfxSrc->wBitsPerSample == 16 && adsi->pwfxSrc->nChannels == 1)
+ aad->convert = cvtMM16msK;
+#endif
+ FIXME("We don't support encoding yet\n");
+ goto theEnd;
+ }
+ else goto theEnd;
+ ADPCM_Reset(adsi, aad);
+
+ return MMSYSERR_NOERROR;
+
+ theEnd:
+ HeapFree(GetProcessHeap(), 0, aad);
+ adsi->dwDriver = 0L;
+ return MMSYSERR_NOTSUPPORTED;
+}
+
+/***********************************************************************
+ * ADPCM_StreamClose
+ *
+ */
+static LRESULT ADPCM_StreamClose(PACMDRVSTREAMINSTANCE adsi)
+{
+ HeapFree(GetProcessHeap(), 0, (void*)adsi->dwDriver);
+ return MMSYSERR_NOERROR;
+}
+
+/***********************************************************************
+ * ADPCM_round
+ *
+ */
+static inline DWORD ADPCM_round(DWORD a, DWORD b, DWORD c)
+{
+ assert(a && b && c);
+ /* to be sure, always return an entire number of c... */
+ return ((double)a * (double)b + (double)c - 1) / (double)c;
+}
+
+/***********************************************************************
+ * ADPCM_StreamSize
+ *
+ */
+static LRESULT ADPCM_StreamSize(PACMDRVSTREAMINSTANCE adsi, PACMDRVSTREAMSIZE adss)
+{
+ switch (adss->fdwSize)
+ {
+ case ACM_STREAMSIZEF_DESTINATION:
+ /* cbDstLength => cbSrcLength */
+ if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM &&
+ adsi->pwfxDst->wFormatTag == WAVE_FORMAT_ADPCM)
+ {
+ /* don't take block overhead into account, doesn't matter too much */
+ adss->cbSrcLength = adss->cbDstLength * 4;
+ }
+ else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_ADPCM &&
+ adsi->pwfxDst->wFormatTag == WAVE_FORMAT_PCM)
+ {
+ FIXME("misses the block header overhead\n");
+ adss->cbSrcLength = 256 + adss->cbDstLength / 4;
+ }
+ else
+ {
+ return MMSYSERR_NOTSUPPORTED;
+ }
+ break;
+ case ACM_STREAMSIZEF_SOURCE:
+ /* cbSrcLength => cbDstLength */
+ if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM &&
+ adsi->pwfxDst->wFormatTag == WAVE_FORMAT_ADPCM)
+ {
+ FIXME("misses the block header overhead\n");
+ adss->cbDstLength = 256 + adss->cbSrcLength / 4;
+ }
+ else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_ADPCM &&
+ adsi->pwfxDst->wFormatTag == WAVE_FORMAT_PCM)
+ {
+ /* don't take block overhead into account, doesn't matter too much */
+ adss->cbDstLength = adss->cbSrcLength * 4;
+ }
+ else
+ {
+ return MMSYSERR_NOTSUPPORTED;
+ }
+ break;
+ default:
+ WARN("Unsupported query %08lx\n", adss->fdwSize);
+ return MMSYSERR_NOTSUPPORTED;
+ }
+ return MMSYSERR_NOERROR;
+}
+
+/***********************************************************************
+ * ADPCM_StreamConvert
+ *
+ */
+static LRESULT ADPCM_StreamConvert(PACMDRVSTREAMINSTANCE adsi, PACMDRVSTREAMHEADER adsh)
+{
+ AcmAdpcmData* aad = (AcmAdpcmData*)adsi->dwDriver;
+ DWORD nsrc = adsh->cbSrcLength;
+ DWORD ndst = adsh->cbDstLength;
+
+ if (adsh->fdwConvert &
+ ~(ACM_STREAMCONVERTF_BLOCKALIGN|
+ ACM_STREAMCONVERTF_END|
+ ACM_STREAMCONVERTF_START))
+ {
+ FIXME("Unsupported fdwConvert (%08lx), ignoring it\n", adsh->fdwConvert);
+ }
+ /* ACM_STREAMCONVERTF_BLOCKALIGN
+ * currently all conversions are block aligned, so do nothing for this flag
+ * ACM_STREAMCONVERTF_END
+ * no pending data, so do nothing for this flag
+ */
+ if ((adsh->fdwConvert & ACM_STREAMCONVERTF_START))
+ {
+ ADPCM_Reset(adsi, aad);
+ }
+
+ aad->convert(adsi, adsh->pbSrc, &nsrc, adsh->pbDst, &ndst);
+ adsh->cbSrcLengthUsed = nsrc;
+ adsh->cbDstLengthUsed = ndst;
+
+ return MMSYSERR_NOERROR;
+}
+
+/**************************************************************************
+ * ADPCM_DriverProc [exported]
+ */
+LRESULT CALLBACK ADPCM_DriverProc(DWORD dwDevID, HDRVR hDriv, UINT wMsg,
+ LPARAM dwParam1, LPARAM dwParam2)
+{
+ TRACE("(%08lx %08lx %04x %08lx %08lx);\n",
+ dwDevID, (DWORD)hDriv, wMsg, dwParam1, dwParam2);
+
+ switch (wMsg)
+ {
+ case DRV_LOAD: return 1;
+ case DRV_FREE: return 1;
+ case DRV_OPEN: return ADPCM_drvOpen((LPSTR)dwParam1);
+ case DRV_CLOSE: return ADPCM_drvClose(dwDevID);
+ case DRV_ENABLE: return 1;
+ case DRV_DISABLE: return 1;
+ case DRV_QUERYCONFIGURE: return 1;
+ case DRV_CONFIGURE: MessageBoxA(0, "MSACM MS ADPCM filter !", "Wine Driver", MB_OK); return 1;
+ case DRV_INSTALL: return DRVCNF_RESTART;
+ case DRV_REMOVE: return DRVCNF_RESTART;
+
+ case ACMDM_DRIVER_NOTIFY:
+ /* no caching from other ACM drivers is done so far */
+ return MMSYSERR_NOERROR;
+
+ case ACMDM_DRIVER_DETAILS:
+ return ADPCM_DriverDetails((PACMDRIVERDETAILSW)dwParam1);
+
+ case ACMDM_FORMATTAG_DETAILS:
+ return ADPCM_FormatTagDetails((PACMFORMATTAGDETAILSW)dwParam1, dwParam2);
+
+ case ACMDM_FORMAT_DETAILS:
+ return ADPCM_FormatDetails((PACMFORMATDETAILSW)dwParam1, dwParam2);
+
+ case ACMDM_FORMAT_SUGGEST:
+ return ADPCM_FormatSuggest((PACMDRVFORMATSUGGEST)dwParam1);
+
+ case ACMDM_STREAM_OPEN:
+ return ADPCM_StreamOpen((PACMDRVSTREAMINSTANCE)dwParam1);
+
+ case ACMDM_STREAM_CLOSE:
+ return ADPCM_StreamClose((PACMDRVSTREAMINSTANCE)dwParam1);
+
+ case ACMDM_STREAM_SIZE:
+ return ADPCM_StreamSize((PACMDRVSTREAMINSTANCE)dwParam1, (PACMDRVSTREAMSIZE)dwParam2);
+
+ case ACMDM_STREAM_CONVERT:
+ return ADPCM_StreamConvert((PACMDRVSTREAMINSTANCE)dwParam1, (PACMDRVSTREAMHEADER)dwParam2);
+
+ case ACMDM_HARDWARE_WAVE_CAPS_INPUT:
+ case ACMDM_HARDWARE_WAVE_CAPS_OUTPUT:
+ /* this converter is not a hardware driver */
+ case ACMDM_FILTERTAG_DETAILS:
+ case ACMDM_FILTER_DETAILS:
+ /* this converter is not a filter */
+ case ACMDM_STREAM_RESET:
+ /* only needed for asynchronous driver... we aren't, so just say it */
+ return MMSYSERR_NOTSUPPORTED;
+ case ACMDM_STREAM_PREPARE:
+ case ACMDM_STREAM_UNPREPARE:
+ /* nothing special to do here... so don't do anything */
+ return MMSYSERR_NOERROR;
+
+ default:
+ return DefDriverProc(dwDevID, hDriv, wMsg, dwParam1, dwParam2);
+ }
+ return 0;
+}
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