mirror of
https://github.com/reactos/reactos.git
synced 2024-11-11 01:04:11 +00:00
645 lines
19 KiB
C
645 lines
19 KiB
C
/*
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* GSM 06.10 codec handling
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* Copyright (C) 2009 Maarten Lankhorst
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*
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* Based on msg711.acm
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* Copyright (C) 2002 Eric Pouech
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "config.h"
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#include <wine/port.h>
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#include <assert.h>
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#include <stdarg.h>
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#include <string.h>
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#ifdef HAVE_GSM_GSM_H
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#include <gsm/gsm.h>
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#elif defined(HAVE_GSM_H)
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#include <gsm.h>
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#endif
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#include "windef.h"
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#include "winbase.h"
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#include "wingdi.h"
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#include "winuser.h"
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#include "winnls.h"
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#include "mmsystem.h"
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#include "mmreg.h"
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#include "msacm.h"
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#include "msacmdrv.h"
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#include "wine/library.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(gsm);
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#ifdef SONAME_LIBGSM
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static void *libgsm_handle;
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#define FUNCPTR(f) static typeof(f) * p##f
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FUNCPTR(gsm_create);
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FUNCPTR(gsm_destroy);
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FUNCPTR(gsm_option);
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FUNCPTR(gsm_encode);
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FUNCPTR(gsm_decode);
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#define LOAD_FUNCPTR(f) \
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if((p##f = wine_dlsym(libgsm_handle, #f, NULL, 0)) == NULL) { \
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wine_dlclose(libgsm_handle, NULL, 0); \
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libgsm_handle = NULL; \
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return 0; \
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}
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/***********************************************************************
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* GSM_drvLoad
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*/
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static LRESULT GSM_drvLoad(void)
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{
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char error[128];
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libgsm_handle = wine_dlopen(SONAME_LIBGSM, RTLD_NOW, error, sizeof(error));
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if (libgsm_handle)
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{
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LOAD_FUNCPTR(gsm_create);
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LOAD_FUNCPTR(gsm_destroy);
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LOAD_FUNCPTR(gsm_option);
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LOAD_FUNCPTR(gsm_encode);
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LOAD_FUNCPTR(gsm_decode);
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return 1;
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}
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else
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{
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ERR("Couldn't load " SONAME_LIBGSM ": %s\n", error);
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return 0;
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}
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}
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/***********************************************************************
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* GSM_drvFree
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*/
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static LRESULT GSM_drvFree(void)
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{
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if (libgsm_handle)
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wine_dlclose(libgsm_handle, NULL, 0);
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return 1;
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}
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#else
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static LRESULT GSM_drvFree(void)
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{
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return 1;
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}
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#endif
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/***********************************************************************
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* GSM_DriverDetails
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*
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*/
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static LRESULT GSM_DriverDetails(PACMDRIVERDETAILSW add)
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{
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add->fccType = ACMDRIVERDETAILS_FCCTYPE_AUDIOCODEC;
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add->fccComp = ACMDRIVERDETAILS_FCCCOMP_UNDEFINED;
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/* Details found from probing native msgsm32.acm */
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add->wMid = MM_MICROSOFT;
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add->wPid = 36;
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add->vdwACM = 0x3320000;
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add->vdwDriver = 0x4000000;
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add->fdwSupport = ACMDRIVERDETAILS_SUPPORTF_CODEC;
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add->cFormatTags = 2;
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add->cFilterTags = 0;
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add->hicon = NULL;
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MultiByteToWideChar( CP_ACP, 0, "Wine GSM 6.10", -1,
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add->szShortName, sizeof(add->szShortName)/sizeof(WCHAR) );
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MultiByteToWideChar( CP_ACP, 0, "Wine GSM 6.10 libgsm codec", -1,
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add->szLongName, sizeof(add->szLongName)/sizeof(WCHAR) );
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MultiByteToWideChar( CP_ACP, 0, "Brought to you by the Wine team...", -1,
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add->szCopyright, sizeof(add->szCopyright)/sizeof(WCHAR) );
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MultiByteToWideChar( CP_ACP, 0, "Refer to LICENSE file", -1,
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add->szLicensing, sizeof(add->szLicensing)/sizeof(WCHAR) );
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add->szFeatures[0] = 0;
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return MMSYSERR_NOERROR;
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}
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/* Validate a WAVEFORMATEX structure */
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static DWORD GSM_FormatValidate(const WAVEFORMATEX *wfx)
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{
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if (wfx->nChannels != 1)
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return 0;
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switch (wfx->wFormatTag)
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{
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case WAVE_FORMAT_PCM:
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if (wfx->wBitsPerSample != 16)
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{
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WARN("PCM wBitsPerSample %u\n", wfx->wBitsPerSample);
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return 0;
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}
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if (wfx->nBlockAlign != 2)
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{
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WARN("PCM nBlockAlign %u\n", wfx->nBlockAlign);
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return 0;
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}
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if (wfx->nAvgBytesPerSec != wfx->nBlockAlign * wfx->nSamplesPerSec)
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{
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WARN("PCM nAvgBytesPerSec %u/%u\n",
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wfx->nAvgBytesPerSec,
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wfx->nBlockAlign * wfx->nSamplesPerSec);
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return 0;
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}
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return 1;
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case WAVE_FORMAT_GSM610:
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if (wfx->cbSize < sizeof(WORD))
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{
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WARN("GSM cbSize %u\n", wfx->cbSize);
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return 0;
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}
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if (wfx->wBitsPerSample != 0)
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{
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WARN("GSM wBitsPerSample %u\n", wfx->wBitsPerSample);
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return 0;
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}
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if (wfx->nBlockAlign != 65)
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{
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WARN("GSM nBlockAlign %u\n", wfx->nBlockAlign);
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return 0;
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}
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if (((const GSM610WAVEFORMAT*)wfx)->wSamplesPerBlock != 320)
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{
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WARN("GSM wSamplesPerBlock %u\n",
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((const GSM610WAVEFORMAT*)wfx)->wSamplesPerBlock);
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return 0;
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}
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if (wfx->nAvgBytesPerSec != wfx->nSamplesPerSec * 65 / 320)
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{
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WARN("GSM nAvgBytesPerSec %d / %d\n",
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wfx->nAvgBytesPerSec, wfx->nSamplesPerSec * 65 / 320);
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return 0;
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}
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return 1;
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default:
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return 0;
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}
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return 0;
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}
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static const DWORD gsm_rates[] = { 8000, 11025, 22050, 44100, 48000, 96000 };
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#define NUM_RATES (sizeof(gsm_rates)/sizeof(*gsm_rates))
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/***********************************************************************
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* GSM_FormatTagDetails
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*
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*/
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static LRESULT GSM_FormatTagDetails(PACMFORMATTAGDETAILSW aftd, DWORD dwQuery)
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{
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static const WCHAR szPcm[]={'P','C','M',0};
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static const WCHAR szGsm[]={'G','S','M',' ','6','.','1','0',0};
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switch (dwQuery)
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{
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case ACM_FORMATTAGDETAILSF_INDEX:
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if (aftd->dwFormatTagIndex > 1) return ACMERR_NOTPOSSIBLE;
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break;
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case ACM_FORMATTAGDETAILSF_LARGESTSIZE:
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if (aftd->dwFormatTag == WAVE_FORMAT_UNKNOWN)
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{
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aftd->dwFormatTagIndex = 1;
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break;
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}
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/* fall thru */
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case ACM_FORMATTAGDETAILSF_FORMATTAG:
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switch (aftd->dwFormatTag)
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{
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case WAVE_FORMAT_PCM: aftd->dwFormatTagIndex = 0; break;
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case WAVE_FORMAT_GSM610: aftd->dwFormatTagIndex = 1; break;
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default: return ACMERR_NOTPOSSIBLE;
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}
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break;
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default:
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WARN("Unsupported query %08x\n", dwQuery);
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return MMSYSERR_NOTSUPPORTED;
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}
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aftd->fdwSupport = ACMDRIVERDETAILS_SUPPORTF_CODEC;
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switch (aftd->dwFormatTagIndex)
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{
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case 0:
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aftd->dwFormatTag = WAVE_FORMAT_PCM;
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aftd->cbFormatSize = sizeof(PCMWAVEFORMAT);
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aftd->cStandardFormats = NUM_RATES;
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lstrcpyW(aftd->szFormatTag, szPcm);
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break;
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case 1:
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aftd->dwFormatTag = WAVE_FORMAT_GSM610;
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aftd->cbFormatSize = sizeof(GSM610WAVEFORMAT);
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aftd->cStandardFormats = NUM_RATES;
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lstrcpyW(aftd->szFormatTag, szGsm);
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break;
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}
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return MMSYSERR_NOERROR;
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}
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/***********************************************************************
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* GSM_FormatDetails
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*
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*/
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static LRESULT GSM_FormatDetails(PACMFORMATDETAILSW afd, DWORD dwQuery)
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{
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switch (dwQuery)
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{
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case ACM_FORMATDETAILSF_FORMAT:
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if (!GSM_FormatValidate(afd->pwfx)) return ACMERR_NOTPOSSIBLE;
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break;
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case ACM_FORMATDETAILSF_INDEX:
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afd->pwfx->wFormatTag = afd->dwFormatTag;
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switch (afd->dwFormatTag)
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{
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case WAVE_FORMAT_PCM:
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if (afd->dwFormatIndex >= NUM_RATES) return ACMERR_NOTPOSSIBLE;
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afd->pwfx->nChannels = 1;
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afd->pwfx->nSamplesPerSec = gsm_rates[afd->dwFormatIndex];
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afd->pwfx->wBitsPerSample = 16;
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afd->pwfx->nBlockAlign = 2;
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afd->pwfx->nAvgBytesPerSec = afd->pwfx->nSamplesPerSec * afd->pwfx->nBlockAlign;
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break;
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case WAVE_FORMAT_GSM610:
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if (afd->dwFormatIndex >= NUM_RATES) return ACMERR_NOTPOSSIBLE;
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afd->pwfx->nChannels = 1;
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afd->pwfx->nSamplesPerSec = gsm_rates[afd->dwFormatIndex];
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afd->pwfx->wBitsPerSample = 0;
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afd->pwfx->nBlockAlign = 65;
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afd->pwfx->nAvgBytesPerSec = afd->pwfx->nSamplesPerSec * 65 / 320;
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afd->pwfx->cbSize = sizeof(WORD);
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((GSM610WAVEFORMAT*)afd->pwfx)->wSamplesPerBlock = 320;
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break;
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default:
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WARN("Unsupported tag %08x\n", afd->dwFormatTag);
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return MMSYSERR_INVALPARAM;
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}
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break;
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default:
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WARN("Unsupported query %08x\n", dwQuery);
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return MMSYSERR_NOTSUPPORTED;
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}
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afd->fdwSupport = ACMDRIVERDETAILS_SUPPORTF_CODEC;
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afd->szFormat[0] = 0; /* let MSACM format this for us... */
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return MMSYSERR_NOERROR;
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}
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/***********************************************************************
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* GSM_FormatSuggest
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*
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*/
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static LRESULT GSM_FormatSuggest(PACMDRVFORMATSUGGEST adfs)
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{
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/* some tests ... */
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if (adfs->cbwfxSrc < sizeof(PCMWAVEFORMAT) ||
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adfs->cbwfxDst < sizeof(PCMWAVEFORMAT) ||
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!GSM_FormatValidate(adfs->pwfxSrc)) return ACMERR_NOTPOSSIBLE;
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/* FIXME: should do those tests against the real size (according to format tag */
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/* If no suggestion for destination, then copy source value */
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if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_NCHANNELS))
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adfs->pwfxDst->nChannels = adfs->pwfxSrc->nChannels;
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if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_NSAMPLESPERSEC))
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adfs->pwfxDst->nSamplesPerSec = adfs->pwfxSrc->nSamplesPerSec;
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if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_WBITSPERSAMPLE))
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{
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if (adfs->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM)
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adfs->pwfxDst->wBitsPerSample = 0;
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else
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adfs->pwfxDst->wBitsPerSample = 16;
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}
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if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_WFORMATTAG))
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{
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switch (adfs->pwfxSrc->wFormatTag)
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{
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case WAVE_FORMAT_PCM: adfs->pwfxDst->wFormatTag = WAVE_FORMAT_GSM610; break;
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case WAVE_FORMAT_GSM610: adfs->pwfxDst->wFormatTag = WAVE_FORMAT_PCM; break;
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}
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}
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/* recompute other values */
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switch (adfs->pwfxDst->wFormatTag)
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{
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case WAVE_FORMAT_PCM:
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adfs->pwfxDst->nBlockAlign = 2;
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adfs->pwfxDst->nAvgBytesPerSec = adfs->pwfxDst->nSamplesPerSec * 2;
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break;
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case WAVE_FORMAT_GSM610:
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if (adfs->pwfxDst->cbSize < sizeof(WORD))
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return ACMERR_NOTPOSSIBLE;
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adfs->pwfxDst->nBlockAlign = 65;
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adfs->pwfxDst->nAvgBytesPerSec = adfs->pwfxDst->nSamplesPerSec * 65 / 320;
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((GSM610WAVEFORMAT*)adfs->pwfxDst)->wSamplesPerBlock = 320;
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break;
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default:
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return ACMERR_NOTPOSSIBLE;
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}
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/* check if result is ok */
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if (!GSM_FormatValidate(adfs->pwfxDst)) return ACMERR_NOTPOSSIBLE;
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return MMSYSERR_NOERROR;
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}
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#ifdef SONAME_LIBGSM
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/***********************************************************************
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* GSM_StreamOpen
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*
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*/
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static LRESULT GSM_StreamOpen(PACMDRVSTREAMINSTANCE adsi)
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{
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int used = 1;
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gsm r;
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if (!GSM_FormatValidate(adsi->pwfxSrc) || !GSM_FormatValidate(adsi->pwfxDst))
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return MMSYSERR_NOTSUPPORTED;
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if (adsi->pwfxSrc->nSamplesPerSec != adsi->pwfxDst->nSamplesPerSec)
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return MMSYSERR_NOTSUPPORTED;
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if (!GSM_drvLoad()) return MMSYSERR_NOTSUPPORTED;
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r = pgsm_create();
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if (!r)
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return MMSYSERR_NOMEM;
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if (pgsm_option(r, GSM_OPT_WAV49, &used) < 0)
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{
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FIXME("Your libgsm library doesn't support GSM_OPT_WAV49\n");
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FIXME("Please recompile libgsm with WAV49 support\n");
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pgsm_destroy(r);
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return MMSYSERR_NOTSUPPORTED;
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}
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adsi->dwDriver = (DWORD_PTR)r;
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return MMSYSERR_NOERROR;
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}
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/***********************************************************************
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* GSM_StreamClose
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*
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*/
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static LRESULT GSM_StreamClose(PACMDRVSTREAMINSTANCE adsi)
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{
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pgsm_destroy((gsm)adsi->dwDriver);
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return MMSYSERR_NOERROR;
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}
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/***********************************************************************
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* GSM_StreamSize
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*
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*/
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static LRESULT GSM_StreamSize(const ACMDRVSTREAMINSTANCE *adsi, PACMDRVSTREAMSIZE adss)
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{
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switch (adss->fdwSize)
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{
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case ACM_STREAMSIZEF_DESTINATION:
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/* cbDstLength => cbSrcLength */
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if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM &&
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adsi->pwfxDst->wFormatTag == WAVE_FORMAT_GSM610)
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{
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adss->cbSrcLength = adss->cbDstLength / 65 * 640;
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}
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else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_GSM610 &&
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adsi->pwfxDst->wFormatTag == WAVE_FORMAT_PCM)
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{
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adss->cbSrcLength = adss->cbDstLength / 640 * 65;
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}
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else
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{
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return MMSYSERR_NOTSUPPORTED;
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}
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return MMSYSERR_NOERROR;
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case ACM_STREAMSIZEF_SOURCE:
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/* cbSrcLength => cbDstLength */
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if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM &&
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adsi->pwfxDst->wFormatTag == WAVE_FORMAT_GSM610)
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{
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adss->cbDstLength = (adss->cbSrcLength + 639) / 640 * 65;
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}
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else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_GSM610 &&
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adsi->pwfxDst->wFormatTag == WAVE_FORMAT_PCM)
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{
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adss->cbDstLength = adss->cbSrcLength / 65 * 640;
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}
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else
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{
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return MMSYSERR_NOTSUPPORTED;
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}
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return MMSYSERR_NOERROR;
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default:
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WARN("Unsupported query %08x\n", adss->fdwSize);
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return MMSYSERR_NOTSUPPORTED;
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}
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}
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/***********************************************************************
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* GSM_StreamConvert
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*
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*/
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static LRESULT GSM_StreamConvert(PACMDRVSTREAMINSTANCE adsi, PACMDRVSTREAMHEADER adsh)
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{
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gsm r = (gsm)adsi->dwDriver;
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DWORD nsrc = 0;
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DWORD ndst = 0;
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BYTE *src = adsh->pbSrc;
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BYTE *dst = adsh->pbDst;
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int odd = 0;
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if (adsh->fdwConvert &
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~(ACM_STREAMCONVERTF_BLOCKALIGN|
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ACM_STREAMCONVERTF_END|
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ACM_STREAMCONVERTF_START))
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{
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FIXME("Unsupported fdwConvert (%08x), ignoring it\n", adsh->fdwConvert);
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}
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/* Reset the index to 0, just to be sure */
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pgsm_option(r, GSM_OPT_FRAME_INDEX, &odd);
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/* The native ms codec writes 65 bytes, and this requires 2 libgsm calls.
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* First 32 bytes are written, or 33 bytes read
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* Second 33 bytes are written, or 32 bytes read
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*/
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/* Decode */
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if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_GSM610)
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{
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if (adsh->cbSrcLength / 65 * 640 > adsh->cbDstLength)
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{
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return ACMERR_NOTPOSSIBLE;
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}
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|
|
while (nsrc + 65 <= adsh->cbSrcLength)
|
|
{
|
|
/* Decode data */
|
|
if (pgsm_decode(r, src + nsrc, (gsm_signal*)(dst + ndst)) < 0)
|
|
FIXME("Couldn't decode data\n");
|
|
ndst += 320;
|
|
nsrc += 33;
|
|
|
|
if (pgsm_decode(r, src + nsrc, (gsm_signal*)(dst + ndst)) < 0)
|
|
FIXME("Couldn't decode data\n");
|
|
ndst += 320;
|
|
nsrc += 32;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Testing a little seems to reveal that despite being able to fit
|
|
* inside the buffer if ACM_STREAMCONVERTF_BLOCKALIGN is set
|
|
* it still rounds up
|
|
*/
|
|
if ((adsh->cbSrcLength + 639) / 640 * 65 > adsh->cbDstLength)
|
|
{
|
|
return ACMERR_NOTPOSSIBLE;
|
|
}
|
|
|
|
/* The packing algorythm writes 32 bytes, then 33 bytes,
|
|
* and it seems to pad to align to 65 bytes always
|
|
* adding extra data where necessary
|
|
*/
|
|
while (nsrc + 640 <= adsh->cbSrcLength)
|
|
{
|
|
/* Encode data */
|
|
pgsm_encode(r, (gsm_signal*)(src+nsrc), dst+ndst);
|
|
nsrc += 320;
|
|
ndst += 32;
|
|
pgsm_encode(r, (gsm_signal*)(src+nsrc), dst+ndst);
|
|
nsrc += 320;
|
|
ndst += 33;
|
|
}
|
|
|
|
/* If ACM_STREAMCONVERTF_BLOCKALIGN isn't set pad with zeros */
|
|
if (!(adsh->fdwConvert & ACM_STREAMCONVERTF_BLOCKALIGN) &&
|
|
nsrc < adsh->cbSrcLength)
|
|
{
|
|
char emptiness[320];
|
|
int todo = adsh->cbSrcLength - nsrc;
|
|
|
|
if (todo > 320)
|
|
{
|
|
pgsm_encode(r, (gsm_signal*)(src+nsrc), dst+ndst);
|
|
ndst += 32;
|
|
todo -= 320;
|
|
nsrc += 320;
|
|
|
|
memcpy(emptiness, src+nsrc, todo);
|
|
memset(emptiness + todo, 0, 320 - todo);
|
|
pgsm_encode(r, (gsm_signal*)emptiness, dst+ndst);
|
|
ndst += 33;
|
|
}
|
|
else
|
|
{
|
|
memcpy(emptiness, src+nsrc, todo);
|
|
memset(emptiness + todo, 0, 320 - todo);
|
|
pgsm_encode(r, (gsm_signal*)emptiness, dst+ndst);
|
|
ndst += 32;
|
|
|
|
memset(emptiness, 0, todo);
|
|
pgsm_encode(r, (gsm_signal*)emptiness, dst+ndst);
|
|
ndst += 33;
|
|
}
|
|
nsrc = adsh->cbSrcLength;
|
|
}
|
|
}
|
|
|
|
adsh->cbSrcLengthUsed = nsrc;
|
|
adsh->cbDstLengthUsed = ndst;
|
|
TRACE("%d(%d) -> %d(%d)\n", nsrc, adsh->cbSrcLength, ndst, adsh->cbDstLength);
|
|
return MMSYSERR_NOERROR;
|
|
}
|
|
|
|
#endif
|
|
|
|
/**************************************************************************
|
|
* GSM_DriverProc [exported]
|
|
*/
|
|
LRESULT CALLBACK GSM_DriverProc(DWORD_PTR dwDevID, HDRVR hDriv, UINT wMsg,
|
|
LPARAM dwParam1, LPARAM dwParam2)
|
|
{
|
|
TRACE("(%08lx %p %04x %08lx %08lx);\n",
|
|
dwDevID, hDriv, wMsg, dwParam1, dwParam2);
|
|
|
|
switch (wMsg)
|
|
{
|
|
case DRV_LOAD: return 1;
|
|
case DRV_FREE: return GSM_drvFree();
|
|
case DRV_OPEN: return 1;
|
|
case DRV_CLOSE: return 1;
|
|
case DRV_ENABLE: return 1;
|
|
case DRV_DISABLE: return 1;
|
|
case DRV_QUERYCONFIGURE: return 1;
|
|
case DRV_CONFIGURE: MessageBoxA(0, "GSM 06.10 codec", "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 GSM_DriverDetails((PACMDRIVERDETAILSW)dwParam1);
|
|
|
|
case ACMDM_FORMATTAG_DETAILS:
|
|
return GSM_FormatTagDetails((PACMFORMATTAGDETAILSW)dwParam1, dwParam2);
|
|
|
|
case ACMDM_FORMAT_DETAILS:
|
|
return GSM_FormatDetails((PACMFORMATDETAILSW)dwParam1, dwParam2);
|
|
|
|
case ACMDM_FORMAT_SUGGEST:
|
|
return GSM_FormatSuggest((PACMDRVFORMATSUGGEST)dwParam1);
|
|
|
|
#ifdef SONAME_LIBGSM
|
|
case ACMDM_STREAM_OPEN:
|
|
return GSM_StreamOpen((PACMDRVSTREAMINSTANCE)dwParam1);
|
|
|
|
case ACMDM_STREAM_CLOSE:
|
|
return GSM_StreamClose((PACMDRVSTREAMINSTANCE)dwParam1);
|
|
|
|
case ACMDM_STREAM_SIZE:
|
|
return GSM_StreamSize((PACMDRVSTREAMINSTANCE)dwParam1, (PACMDRVSTREAMSIZE)dwParam2);
|
|
|
|
case ACMDM_STREAM_CONVERT:
|
|
return GSM_StreamConvert((PACMDRVSTREAMINSTANCE)dwParam1, (PACMDRVSTREAMHEADER)dwParam2);
|
|
#else
|
|
case ACMDM_STREAM_OPEN: ERR("libgsm support not compiled in!\n");
|
|
case ACMDM_STREAM_CLOSE:
|
|
case ACMDM_STREAM_SIZE:
|
|
case ACMDM_STREAM_CONVERT:
|
|
return MMSYSERR_NOTSUPPORTED;
|
|
#endif
|
|
|
|
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);
|
|
}
|
|
}
|