IMA ADPCM codec
Eric Pouech
eric.pouech at wanadoo.fr
Fri May 10 16:08:35 CDT 2002
since Hidenori removed his work (IMA ADPCM decoder), I resurected some
old work I had started and never finished.
The patch also contains a working encoder.
A+
-------------- next part --------------
Name: imaadpcm
ChangeLog: created an ACM IMA ADPCM codec
License: X11
GenDate: 2002/05/10 20:32:05 UTC
ModifiedFiles: documentation/samples/system.ini dlls/msacm/imaadp32/Makefile.in dlls/msacm/imaadp32/imaadp32.acm.spec dlls/msacm/imaadp32/imaadp32.c
AddedFiles:
===================================================================
RCS file: /home/cvs/cvsroot/wine/wine/documentation/samples/system.ini,v
retrieving revision 1.5
diff -u -u -r1.5 system.ini
--- documentation/samples/system.ini 5 May 2002 19:40:58 -0000 1.5
+++ documentation/samples/system.ini 10 May 2002 04:32:40 -0000
@@ -8,4 +8,4 @@
MPEGVideo=mciqtz.drv
[drivers32]
-
+MSACM.adpcm=imaadp32.acm
Index: dlls/msacm/imaadp32/Makefile.in
===================================================================
RCS file: /home/cvs/cvsroot/wine/wine/dlls/msacm/imaadp32/Makefile.in,v
retrieving revision 1.2
diff -u -u -r1.2 Makefile.in
--- dlls/msacm/imaadp32/Makefile.in 9 May 2002 00:05:50 -0000 1.2
+++ dlls/msacm/imaadp32/Makefile.in 10 May 2002 04:40:23 -0000
@@ -3,7 +3,7 @@
SRCDIR = @srcdir@
VPATH = @srcdir@
MODULE = imaadp32.acm
-IMPORTS = ntdll.dll
+IMPORTS = winmm.dll user32.dll kernel32.dll ntdll.dll
LDDLLFLAGS = @LDDLLFLAGS@
SYMBOLFILE = $(MODULE).tmp.o
Index: dlls/msacm/imaadp32/imaadp32.acm.spec
===================================================================
RCS file: /home/cvs/cvsroot/wine/wine/dlls/msacm/imaadp32/imaadp32.acm.spec,v
retrieving revision 1.3
diff -u -u -r1.3 imaadp32.acm.spec
--- dlls/msacm/imaadp32/imaadp32.acm.spec 9 May 2002 00:05:50 -0000 1.3
+++ dlls/msacm/imaadp32/imaadp32.acm.spec 10 May 2002 04:41:56 -0000
@@ -2,6 +2,6 @@
file imaadp32.acm
type win32
-debug_channels ()
+debug_channels (adpcm)
-@ stub DriverProc #(long long long long long)
+@ stdcall DriverProc (long long long long long) ADPCM_DriverProc
Index: dlls/msacm/imaadp32/imaadp32.c
===================================================================
RCS file: /home/cvs/cvsroot/wine/wine/dlls/msacm/imaadp32/imaadp32.c,v
retrieving revision 1.3
diff -u -u -r1.3 imaadp32.c
--- dlls/msacm/imaadp32/imaadp32.c 5 May 2002 19:40:58 -0000 1.3
+++ dlls/msacm/imaadp32/imaadp32.c 10 May 2002 04:39:10 -0000
@@ -1 +1,937 @@
-/* all codes are removed by author */
+/* -*- tab-width: 8; c-basic-offset: 4 -*- */
+
+/*
+ * ADPCM handling (includes both MS and IMA forms)
+ *
+ * Copyright (C) 2001 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);
+ /* IMA encoding only */
+ BYTE stepIndexL;
+ BYTE stepIndexR;
+ /* short sample; */
+} 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]))
+
+/***********************************************************************
+ * ADPCM_GetFormatIndex
+ */
+static DWORD ADPCM_GetFormatIndex(LPWAVEFORMATEX wfx)
+{
+ int i, hi;
+ Format* fmts;
+
+ switch (wfx->wFormatTag)
+ {
+ case WAVE_FORMAT_PCM:
+ hi = NUM_PCM_FORMATS;
+ fmts = PCM_Formats;
+ break;
+ case WAVE_FORMAT_IMA_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;
+}
+
+/***********************************************************************
+ * 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);
+}
+
+/* IMA (or DVI) APDCM codec routines */
+
+static const unsigned IMA_StepTable[89] =
+{
+ 7, 8, 9, 10, 11, 12, 13, 14,
+ 16, 17, 19, 21, 23, 25, 28, 31,
+ 34, 37, 41, 45, 50, 55, 60, 66,
+ 73, 80, 88, 97, 107, 118, 130, 143,
+ 157, 173, 190, 209, 230, 253, 279, 307,
+ 337, 371, 408, 449, 494, 544, 598, 658,
+ 724, 796, 876, 963, 1060, 1166, 1282, 1411,
+ 1552, 1707, 1878, 2066, 2272, 2499, 2749, 3024,
+ 3327, 3660, 4026, 4428, 4871, 5358, 5894, 6484,
+ 7132, 7845, 8630, 9493, 10442, 11487, 12635, 13899,
+ 15289, 16818, 18500, 20350, 22385, 24623, 27086, 29794,
+ 32767
+};
+
+static const int IMA_IndexTable[16] =
+{
+ -1, -1, -1, -1, 2, 4, 6, 8,
+ -1, -1, -1, -1, 2, 4, 6, 8
+};
+
+static inline void clamp_step_index(int* stepIndex)
+{
+ if (*stepIndex < 0 ) *stepIndex = 0;
+ if (*stepIndex > 88) *stepIndex = 88;
+}
+
+static inline void clamp_sample(int* sample)
+{
+ if (*sample < -32768) *sample = -32768;
+ if (*sample > 32767) *sample = 32767;
+}
+
+static inline void process_nibble(unsigned char code, int* stepIndex, int* sample)
+{
+ unsigned step;
+ int diff;
+
+ code &= 0x0F;
+
+ step = IMA_StepTable[*stepIndex];
+ diff = step >> 3;
+ if (code & 1) diff += step >> 2;
+ if (code & 2) diff += step >> 1;
+ if (code & 4) diff += step;
+ if (code & 8) *sample -= diff;
+ else *sample += diff;
+ clamp_sample(sample);
+ *stepIndex += IMA_IndexTable[code];
+ clamp_step_index(stepIndex);
+}
+
+static inline unsigned char generate_nibble(int in, int* stepIndex, int* sample)
+{
+ int effdiff, diff = in - *sample;
+ unsigned step;
+ unsigned char code;
+
+ if (diff < 0)
+ {
+ diff = -diff;
+ code = 8;
+ }
+ else
+ {
+ code = 0;
+ }
+
+ step = IMA_StepTable[*stepIndex];
+ effdiff = (step >> 3);
+ if (diff >= step)
+ {
+ code |= 4;
+ diff -= step;
+ effdiff += step;
+ }
+ step >>= 1;
+ if (diff >= step)
+ {
+ code |= 2;
+ diff -= step;
+ effdiff += step;
+ }
+ step >>= 1;
+ if (diff >= step)
+ {
+ code |= 1;
+ effdiff += step;
+ }
+ if (code & 8) *sample -= effdiff;
+ else *sample += effdiff;
+ clamp_sample(sample);
+ *stepIndex += IMA_IndexTable[code];
+ clamp_step_index(stepIndex);
+ return code;
+}
+
+static void cvtSSima16K(PACMDRVSTREAMINSTANCE adsi,
+ const unsigned char* src, LPDWORD nsrc,
+ unsigned char* dst, LPDWORD ndst)
+{
+ int i;
+ int sampleL, sampleR;
+ int stepIndexL, stepIndexR;
+ int nsamp_blk = ((LPIMAADPCMWAVEFORMAT)adsi->pwfxSrc)->wSamplesPerBlock;
+ int nsamp;
+ /* compute the number of entire blocks we can decode...
+ * it's the min of the number of entire blocks in source buffer and the number
+ * of entire blocks in destination buffer
+ */
+ 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--; /* remove the sample in block header */
+ for (; nblock > 0; nblock--)
+ {
+ const unsigned char* in_src = src;
+
+ /* handle headers first */
+ sampleL = R16(src);
+ stepIndexL = (unsigned)*(src + 2);
+ clamp_step_index(&stepIndexL);
+ src += 4;
+ W16(dst, sampleL); dst += 2;
+
+ sampleR = R16(src);
+ stepIndexR = (unsigned)*(src + 2);
+ clamp_step_index(&stepIndexR);
+ src += 4;
+ W16(dst, sampleR); dst += 2;
+
+ for (nsamp = nsamp_blk; nsamp > 0; nsamp -= 8)
+ {
+ for (i = 0; i < 4; i++)
+ {
+ process_nibble(*src >> 4, &stepIndexL, &sampleL);
+ W16(dst + (2 * i + 0) * 4 + 0, sampleL);
+ process_nibble(*src++, &stepIndexL, &sampleL);
+ W16(dst + (2 * i + 1) * 4 + 0, sampleL);
+ }
+ for (i = 0; i < 4; i++)
+ {
+ process_nibble(*src >> 4, &stepIndexR, &sampleR);
+ W16(dst + (2 * i + 0) * 4 + 2, sampleR);
+ process_nibble(*src++, &stepIndexR, &sampleR);
+ W16(dst + (2 * i + 1) * 4 + 2, sampleR);
+ }
+ dst += 32;
+ }
+ /* we have now to realign the source pointer on block */
+ src = in_src + adsi->pwfxSrc->nBlockAlign;
+ }
+}
+
+static void cvtMMima16K(PACMDRVSTREAMINSTANCE adsi,
+ const unsigned char* src, LPDWORD nsrc,
+ unsigned char* dst, LPDWORD ndst)
+{
+ int sample;
+ int stepIndex;
+ int nsamp_blk = ((LPIMAADPCMWAVEFORMAT)adsi->pwfxSrc)->wSamplesPerBlock;
+ int nsamp;
+ /* compute the number of entire blocks we can decode...
+ * it's the min of the number of entire blocks in source buffer and the number
+ * of entire blocks in destination buffer
+ */
+ DWORD nblock = min(*nsrc / adsi->pwfxSrc->nBlockAlign,
+ *ndst / (nsamp_blk * 2));
+
+ *nsrc = nblock * adsi->pwfxSrc->nBlockAlign;
+ *ndst = nblock * nsamp_blk * 2;
+
+ nsamp_blk--; /* remove the sample in block header */
+ for (; nblock > 0; nblock--)
+ {
+ const unsigned char* in_src = src;
+
+ /* handle header first */
+ sample = R16(src);
+ stepIndex = (unsigned)*(src + 2);
+ clamp_step_index(&stepIndex);
+ src += 4;
+ W16(dst, sample); dst += 2;
+
+ for (nsamp = nsamp_blk; nsamp > 0; nsamp -= 2)
+ {
+ process_nibble(*src >> 4, &stepIndex, &sample);
+ W16(dst, sample); dst += 2;
+ process_nibble(*src++, &stepIndex, &sample);
+ W16(dst, sample); dst += 2;
+ }
+ /* we have now to realign the source pointer on block */
+ src = in_src + adsi->pwfxSrc->nBlockAlign;
+ }
+}
+
+static void cvtSS16imaK(PACMDRVSTREAMINSTANCE adsi,
+ const unsigned char* src, LPDWORD nsrc,
+ unsigned char* dst, LPDWORD ndst)
+{
+ int stepIndexL, stepIndexR;
+ int sampleL, sampleR;
+ BYTE code1, code2;
+ int nsamp_blk = ((LPIMAADPCMWAVEFORMAT)adsi->pwfxDst)->wSamplesPerBlock;
+ int i, nsamp;
+ /* compute the number of entire blocks we can decode...
+ * it's the min of the number of entire blocks in source buffer and the number
+ * of entire blocks in destination buffer
+ */
+ DWORD nblock = min(*nsrc / (nsamp_blk * 2 * 2),
+ *ndst / adsi->pwfxDst->nBlockAlign);
+
+ *nsrc = nblock * (nsamp_blk * 2 * 2);
+ *ndst = nblock * adsi->pwfxDst->nBlockAlign;
+
+ stepIndexL = ((AcmAdpcmData*)adsi->dwDriver)->stepIndexL;
+ stepIndexR = ((AcmAdpcmData*)adsi->dwDriver)->stepIndexR;
+
+ nsamp_blk--; /* so that we won't count the sample in header while filling the block */
+
+ for (; nblock > 0; nblock--)
+ {
+ char* in_dst = dst;
+
+ /* generate header */
+ sampleL = R16(src); src += 2;
+ W16(dst, sampleL); dst += 2;
+ *dst = (unsigned char)(unsigned)stepIndexL;
+ dst += 2;
+
+ sampleR = R16(src); src += 2;
+ W16(dst, sampleR); dst += 2;
+ *dst = (unsigned char)(unsigned)stepIndexR;
+ dst += 2;
+
+ for (nsamp = nsamp_blk; nsamp > 0; nsamp -= 8)
+ {
+ for (i = 0; i < 4; i++)
+ {
+ code1 = generate_nibble(R16(src + (2 * i + 0) * 2 + 0),
+ &stepIndexL, &sampleL);
+ code2 = generate_nibble(R16(src + (2 * i + 1) * 2 + 0),
+ &stepIndexL, &sampleL);
+ *dst++ = (code1 << 4) | code2;
+ }
+ for (i = 0; i < 4; i++)
+ {
+ code1 = generate_nibble(R16(src + (2 * i + 0) * 2 + 1),
+ &stepIndexR, &sampleR);
+ code2 = generate_nibble(R16(src + (2 * i + 1) * 2 + 1),
+ &stepIndexR, &sampleR);
+ *dst++ = (code1 << 4) | code2;
+ }
+ src += 32;
+ }
+ dst = in_dst + adsi->pwfxDst->nBlockAlign;
+ }
+ ((AcmAdpcmData*)adsi->dwDriver)->stepIndexL = stepIndexL;
+ ((AcmAdpcmData*)adsi->dwDriver)->stepIndexR = stepIndexR;
+}
+
+static void cvtMM16imaK(PACMDRVSTREAMINSTANCE adsi,
+ const unsigned char* src, LPDWORD nsrc,
+ unsigned char* dst, LPDWORD ndst)
+{
+ int stepIndex;
+ int sample;
+ BYTE code1, code2;
+ int nsamp_blk = ((LPIMAADPCMWAVEFORMAT)adsi->pwfxDst)->wSamplesPerBlock;
+ int nsamp;
+ /* compute the number of entire blocks we can decode...
+ * it's the min of the number of entire blocks in source buffer and the number
+ * of entire blocks in destination buffer
+ */
+ DWORD nblock = min(*nsrc / (nsamp_blk * 2),
+ *ndst / adsi->pwfxDst->nBlockAlign);
+
+ *nsrc = nblock * (nsamp_blk * 2);
+ *ndst = nblock * adsi->pwfxDst->nBlockAlign;
+
+ stepIndex = ((AcmAdpcmData*)adsi->dwDriver)->stepIndexL;
+ nsamp_blk--; /* so that we won't count the sample in header while filling the block */
+
+ for (; nblock > 0; nblock--)
+ {
+ char* in_dst = dst;
+
+ /* generate header */
+ /* FIXME: what about the last effective sample from previous block ??? */
+ /* perhaps something like:
+ * sample += R16(src);
+ * clamp_sample(sample);
+ * and with :
+ * + saving the sample in adsi->dwDriver when all blocks are done
+ + + reset should set the field in adsi->dwDriver to 0 too
+ */
+ sample = R16(src); src += 2;
+ W16(dst, sample); dst += 2;
+ *dst = (unsigned char)(unsigned)stepIndex;
+ dst += 2;
+
+ for (nsamp = nsamp_blk; nsamp > 0; nsamp -= 2)
+ {
+ code1 = generate_nibble(R16(src), &stepIndex, &sample);
+ src += 2;
+ code2 = generate_nibble(R16(src), &stepIndex, &sample);
+ src += 2;
+ *dst++ = (code1 << 4) | code2;
+ }
+ dst = in_dst + adsi->pwfxDst->nBlockAlign;
+ }
+ ((AcmAdpcmData*)adsi->dwDriver)->stepIndexL = stepIndex;
+}
+
+/***********************************************************************
+ * 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, IMA ADPCM */
+ add->cFilterTags = 0;
+ add->hicon = (HICON)0;
+ MultiByteToWideChar( CP_ACP, 0, "WINE-ADPCM", -1,
+ add->szShortName, sizeof(add->szShortName)/sizeof(WCHAR) );
+ MultiByteToWideChar( CP_ACP, 0, "Wine IMA 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 szImaAdPcm[]={'I','M','A',' ','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_IMA_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_IMA_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_IMA_ADPCM;
+ aftd->cbFormatSize = sizeof(IMAADPCMWAVEFORMAT);
+ aftd->cStandardFormats = NUM_ADPCM_FORMATS;
+ lstrcpyW(aftd->szFormatTag, szImaAdPcm);
+ 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_IMA_ADPCM:
+ if (afd->dwFormatIndex >= NUM_ADPCM_FORMATS) 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;
+ afd->pwfx->nBlockAlign = 1024;
+ /* we got 4 bits per sample */
+ afd->pwfx->nAvgBytesPerSec =
+ (afd->pwfx->nSamplesPerSec * 4) / 8;
+ if (afd->cbwfx >= sizeof(WAVEFORMATEX))
+ afd->pwfx->cbSize = sizeof(WORD);
+ if (afd->cbwfx >= sizeof(IMAADPCMWAVEFORMAT))
+ ((IMAADPCMWAVEFORMAT*)afd->pwfx)->wSamplesPerBlock = (1024 - 4 * afd->pwfx->nChannels) * (2 / afd->pwfx->nChannels) + 1;
+ 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_IMA_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_IMA_ADPCM:
+ adfs->pwfxDst->nBlockAlign = 1024;
+ /* FIXME: not handling header overhead */
+ adfs->pwfxDst->nAvgBytesPerSec = ((adfs->pwfxDst->nSamplesPerSec * 4) / 8) * adfs->pwfxSrc->nChannels;
+ ((IMAADPCMWAVEFORMAT*)adfs->pwfxDst)->wSamplesPerBlock = (1024 - 4 * adfs->pwfxSrc->nChannels) * (2 / adfs->pwfxSrc->nChannels) + 1;
+ FIXME("setting spb=%u\n", ((IMAADPCMWAVEFORMAT*)adfs->pwfxDst)->wSamplesPerBlock);
+ break;
+ default:
+ FIXME("\n");
+ break;
+ }
+
+ return MMSYSERR_NOERROR;
+}
+
+/***********************************************************************
+ * ADPCM_Reset
+ *
+ */
+static void ADPCM_Reset(PACMDRVSTREAMINSTANCE adsi, AcmAdpcmData* aad)
+{
+ aad->stepIndexL = aad->stepIndexR = 0;
+}
+
+/***********************************************************************
+ * 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_IMA_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;
+
+ nspb = ((LPIMAADPCMWAVEFORMAT)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;
+
+ /* adpcm decoding... */
+ if (adsi->pwfxDst->wBitsPerSample == 16 && adsi->pwfxDst->nChannels == 2)
+ aad->convert = cvtSSima16K;
+ if (adsi->pwfxDst->wBitsPerSample == 16 && adsi->pwfxDst->nChannels == 1)
+ aad->convert = cvtMMima16K;
+ }
+ else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM &&
+ adsi->pwfxDst->wFormatTag == WAVE_FORMAT_IMA_ADPCM)
+ {
+ if (adsi->pwfxSrc->nSamplesPerSec != adsi->pwfxDst->nSamplesPerSec ||
+ adsi->pwfxSrc->nChannels != adsi->pwfxDst->nChannels ||
+ adsi->pwfxSrc->wBitsPerSample != 16)
+ goto theEnd;
+
+ nspb = ((LPIMAADPCMWAVEFORMAT)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;
+
+ /* adpcm coding... */
+ if (adsi->pwfxSrc->wBitsPerSample == 16 && adsi->pwfxSrc->nChannels == 2)
+ aad->convert = cvtSS16imaK;
+ if (adsi->pwfxSrc->wBitsPerSample == 16 && adsi->pwfxSrc->nChannels == 1)
+ aad->convert = cvtMM16imaK;
+ }
+ 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_IMA_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_IMA_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_IMA_ADPCM)
+ {
+ FIXME("misses the block header overhead\n");
+ adss->cbDstLength = 256 + adss->cbSrcLength / 4;
+ }
+ else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_IMA_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 IMA 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;
+}
More information about the wine-patches
mailing list