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![Eric Pouech](/assets/img/avatar_default.png)
Signed-off-by: Eric Pouech <eric.pouech@gmail.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>
601 lines
19 KiB
C
601 lines
19 KiB
C
/*
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* MPEG Layer 3 handling
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*
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* Copyright (C) 2002 Eric Pouech
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* Copyright (C) 2009 CodeWeavers, Aric Stewart
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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 <assert.h>
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#include <stdarg.h>
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#include <string.h>
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#include <mpg123.h>
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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/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(mpeg3);
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/* table to list all supported formats... those are the basic ones. this
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* also helps given a unique index to each of the supported formats
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*/
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typedef struct
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{
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int nChannels;
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int nBits;
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int rate;
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} Format;
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static const Format PCM_Formats[] =
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{
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{1, 8, 8000}, {2, 8, 8000}, {1, 16, 8000}, {2, 16, 8000},
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{1, 8, 11025}, {2, 8, 11025}, {1, 16, 11025}, {2, 16, 11025},
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{1, 8, 12000}, {2, 8, 12000}, {1, 16, 12000}, {2, 16, 12000},
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{1, 8, 16000}, {2, 8, 16000}, {1, 16, 16000}, {2, 16, 16000},
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{1, 8, 22050}, {2, 8, 22050}, {1, 16, 22050}, {2, 16, 22050},
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{1, 8, 24000}, {2, 8, 24000}, {1, 16, 24000}, {2, 16, 24000},
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{1, 8, 32000}, {2, 8, 32000}, {1, 16, 32000}, {2, 16, 32000},
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{1, 8, 44100}, {2, 8, 44100}, {1, 16, 44100}, {2, 16, 44100},
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{1, 8, 48000}, {2, 8, 48000}, {1, 16, 48000}, {2, 16, 48000}
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};
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static const Format MPEG3_Formats[] =
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{
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{1, 0, 8000}, {2, 0, 8000},
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{1, 0, 11025}, {2, 0, 11025},
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{1, 0, 12000}, {2, 0, 12000},
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{1, 0, 16000}, {2, 0, 16000},
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{1, 0, 22050}, {2, 0, 22050},
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{1, 0, 24000}, {2, 0, 24000},
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{1, 0, 32000}, {2, 0, 32000},
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{1, 0, 44100}, {2, 0, 44100},
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{1, 0, 48000}, {2, 0, 48000}
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};
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/***********************************************************************
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* MPEG3_GetFormatIndex
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*/
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static DWORD MPEG3_GetFormatIndex(LPWAVEFORMATEX wfx)
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{
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int i, hi;
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const Format *fmts;
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switch (wfx->wFormatTag)
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{
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case WAVE_FORMAT_PCM:
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hi = ARRAY_SIZE(PCM_Formats);
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fmts = PCM_Formats;
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break;
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case WAVE_FORMAT_MPEG:
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case WAVE_FORMAT_MPEGLAYER3:
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hi = ARRAY_SIZE(MPEG3_Formats);
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fmts = MPEG3_Formats;
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break;
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default:
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return 0xFFFFFFFF;
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}
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for (i = 0; i < hi; i++)
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{
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if (wfx->nChannels == fmts[i].nChannels &&
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wfx->nSamplesPerSec == fmts[i].rate &&
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(wfx->wBitsPerSample == fmts[i].nBits || !fmts[i].nBits))
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return i;
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}
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return 0xFFFFFFFF;
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}
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/***********************************************************************
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* MPEG3_drvOpen
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*/
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static LRESULT MPEG3_drvOpen(LPCSTR str)
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{
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mpg123_init();
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return 1;
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}
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/***********************************************************************
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* MPEG3_drvClose
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*/
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static LRESULT MPEG3_drvClose(DWORD_PTR dwDevID)
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{
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mpg123_exit();
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return 1;
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}
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static void mp3_horse(mpg123_handle *handle, const unsigned char *src,
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DWORD *nsrc, unsigned char *dst, DWORD *ndst)
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{
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int ret;
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size_t size;
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DWORD dpos = 0;
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if (*nsrc > 0)
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{
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ret = mpg123_feed(handle, src, *nsrc);
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if (ret != MPG123_OK)
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{
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ERR("Error feeding data\n");
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*ndst = *nsrc = 0;
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return;
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}
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}
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do {
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size = 0;
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ret = mpg123_read(handle, dst + dpos, *ndst - dpos, &size);
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if (ret == MPG123_ERR)
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{
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FIXME("Error occurred during decoding!\n");
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*ndst = *nsrc = 0;
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return;
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}
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if (ret == MPG123_NEW_FORMAT)
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{
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long rate;
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int channels, enc;
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mpg123_getformat(handle, &rate, &channels, &enc);
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TRACE("New format: %li Hz, %i channels, encoding value %i\n", rate, channels, enc);
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}
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dpos += size;
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if (dpos >= *ndst) break;
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} while (ret != MPG123_ERR && ret != MPG123_NEED_MORE);
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*ndst = dpos;
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}
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/***********************************************************************
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* MPEG3_StreamOpen
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*
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*/
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static LRESULT MPEG3_StreamOpen(ACMDRVSTREAMINSTANCE *instance)
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{
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mpg123_handle *handle;
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int err;
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assert(!(instance->fdwOpen & ACM_STREAMOPENF_ASYNC));
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if (MPEG3_GetFormatIndex(instance->pwfxSrc) == 0xFFFFFFFF
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|| MPEG3_GetFormatIndex(instance->pwfxDst) == 0xFFFFFFFF)
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return ACMERR_NOTPOSSIBLE;
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if (instance->pwfxDst->wFormatTag != WAVE_FORMAT_PCM)
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return MMSYSERR_NOTSUPPORTED;
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if (instance->pwfxSrc->wFormatTag != WAVE_FORMAT_MPEGLAYER3
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&& instance->pwfxSrc->wFormatTag != WAVE_FORMAT_MPEG)
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return MMSYSERR_NOTSUPPORTED;
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if (instance->pwfxSrc->wFormatTag == WAVE_FORMAT_MPEGLAYER3)
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{
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MPEGLAYER3WAVEFORMAT *mp3_format = (MPEGLAYER3WAVEFORMAT *)instance->pwfxSrc;
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if (instance->pwfxSrc->cbSize < MPEGLAYER3_WFX_EXTRA_BYTES
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|| mp3_format->wID != MPEGLAYER3_ID_MPEG)
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return ACMERR_NOTPOSSIBLE;
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}
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if (instance->pwfxSrc->nSamplesPerSec != instance->pwfxDst->nSamplesPerSec
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|| instance->pwfxSrc->nChannels != instance->pwfxDst->nChannels
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|| instance->pwfxDst->wBitsPerSample != 16)
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return MMSYSERR_NOTSUPPORTED;
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handle = mpg123_new(NULL, &err);
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instance->dwDriver = (DWORD_PTR)handle;
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mpg123_open_feed(handle);
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/* mpg123 may find a XING header in the mp3 and use that information
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* to ask for seeks in order to read specific frames in the file.
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* We cannot allow that since the caller application is feeding us.
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* This fixes problems for mp3 files encoded with LAME (bug 42361)
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*/
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mpg123_param(handle, MPG123_ADD_FLAGS, MPG123_IGNORE_INFOFRAME, 0);
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return MMSYSERR_NOERROR;
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}
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/***********************************************************************
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* MPEG3_StreamClose
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*
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*/
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static LRESULT MPEG3_StreamClose(ACMDRVSTREAMINSTANCE *instance)
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{
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mpg123_handle *handle = (mpg123_handle *)instance->dwDriver;
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mpg123_close(handle);
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mpg123_delete(handle);
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return MMSYSERR_NOERROR;
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}
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/***********************************************************************
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* MPEG3_DriverDetails
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*
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*/
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static LRESULT MPEG3_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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add->wMid = MM_FRAUNHOFER_IIS;
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add->wPid = MM_FHGIIS_MPEGLAYER3_DECODE;
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add->vdwACM = 0x01000000;
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add->vdwDriver = 0x01000000;
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add->fdwSupport = ACMDRIVERDETAILS_SUPPORTF_CODEC;
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add->cFormatTags = 3; /* PCM, MPEG3 */
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add->cFilterTags = 0;
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add->hicon = NULL;
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MultiByteToWideChar( CP_ACP, 0, "MPEG Layer-3 Codec", -1,
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add->szShortName, ARRAY_SIZE( add->szShortName ));
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MultiByteToWideChar( CP_ACP, 0, "Wine MPEG3 decoder", -1,
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add->szLongName, ARRAY_SIZE( add->szLongName ));
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MultiByteToWideChar( CP_ACP, 0, "Brought to you by the Wine team...", -1,
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add->szCopyright, ARRAY_SIZE( add->szCopyright ));
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MultiByteToWideChar( CP_ACP, 0, "Refer to LICENSE file", -1,
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add->szLicensing, ARRAY_SIZE( add->szLicensing ));
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add->szFeatures[0] = 0;
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return MMSYSERR_NOERROR;
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}
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/***********************************************************************
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* MPEG3_FormatTagDetails
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*
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*/
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static LRESULT MPEG3_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 szMpeg3[]={'M','P','e','g','3',0};
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static const WCHAR szMpeg[]={'M','P','e','g',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 > 2) 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 = 2; /* WAVE_FORMAT_MPEG is biggest */
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break;
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}
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/* fall through */
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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_MPEGLAYER3: aftd->dwFormatTagIndex = 1; break;
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case WAVE_FORMAT_MPEG: aftd->dwFormatTagIndex = 2; 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 %08lx\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 = ARRAY_SIZE(PCM_Formats);
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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_MPEGLAYER3;
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aftd->cbFormatSize = sizeof(MPEGLAYER3WAVEFORMAT);
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aftd->cStandardFormats = 0;
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lstrcpyW(aftd->szFormatTag, szMpeg3);
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break;
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case 2:
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aftd->dwFormatTag = WAVE_FORMAT_MPEG;
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aftd->cbFormatSize = sizeof(MPEG1WAVEFORMAT);
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aftd->cStandardFormats = 0;
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lstrcpyW(aftd->szFormatTag, szMpeg);
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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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* MPEG3_FormatDetails
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*
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*/
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static LRESULT MPEG3_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 (MPEG3_GetFormatIndex(afd->pwfx) == 0xFFFFFFFF) 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 >= ARRAY_SIZE(PCM_Formats)) return ACMERR_NOTPOSSIBLE;
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afd->pwfx->nChannels = PCM_Formats[afd->dwFormatIndex].nChannels;
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afd->pwfx->nSamplesPerSec = PCM_Formats[afd->dwFormatIndex].rate;
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afd->pwfx->wBitsPerSample = PCM_Formats[afd->dwFormatIndex].nBits;
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/* native MSACM uses a PCMWAVEFORMAT structure, so cbSize is not accessible
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* afd->pwfx->cbSize = 0;
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*/
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afd->pwfx->nBlockAlign =
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(afd->pwfx->nChannels * afd->pwfx->wBitsPerSample) / 8;
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afd->pwfx->nAvgBytesPerSec =
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afd->pwfx->nSamplesPerSec * afd->pwfx->nBlockAlign;
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break;
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case WAVE_FORMAT_MPEGLAYER3:
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case WAVE_FORMAT_MPEG:
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WARN("Encoding to MPEG is not supported\n");
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return ACMERR_NOTPOSSIBLE;
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default:
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WARN("Unsupported tag %08lx\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 %08lx\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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* MPEG3_FormatSuggest
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*
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*/
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static LRESULT MPEG3_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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MPEG3_GetFormatIndex(adfs->pwfxSrc) == 0xFFFFFFFF) 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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adfs->pwfxDst->wBitsPerSample = 16;
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if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_WFORMATTAG))
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{
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if (adfs->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM)
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{
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WARN("Encoding to MPEG is not supported\n");
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return ACMERR_NOTPOSSIBLE;
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}
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else
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adfs->pwfxDst->wFormatTag = WAVE_FORMAT_PCM;
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}
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/* check if result is ok */
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if (MPEG3_GetFormatIndex(adfs->pwfxDst) == 0xFFFFFFFF) return ACMERR_NOTPOSSIBLE;
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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 = (adfs->pwfxDst->nChannels * adfs->pwfxDst->wBitsPerSample) / 8;
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adfs->pwfxDst->nAvgBytesPerSec = adfs->pwfxDst->nSamplesPerSec * adfs->pwfxDst->nBlockAlign;
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break;
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case WAVE_FORMAT_MPEG:
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case WAVE_FORMAT_MPEGLAYER3:
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WARN("Encoding to MPEG is not supported\n");
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return ACMERR_NOTPOSSIBLE;
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break;
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default:
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FIXME("\n");
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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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* MPEG3_StreamSize
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*
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*/
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static LRESULT MPEG3_StreamSize(PACMDRVSTREAMINSTANCE adsi, PACMDRVSTREAMSIZE adss)
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{
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DWORD nblocks;
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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_MPEGLAYER3 ||
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adsi->pwfxDst->wFormatTag == WAVE_FORMAT_MPEG))
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{
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nblocks = (adss->cbDstLength - 3000) / (DWORD)(adsi->pwfxDst->nAvgBytesPerSec * 1152 / adsi->pwfxDst->nSamplesPerSec + 0.5);
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if (nblocks == 0)
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return ACMERR_NOTPOSSIBLE;
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adss->cbSrcLength = nblocks * 1152 * adsi->pwfxSrc->nBlockAlign;
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}
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else if ((adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_MPEGLAYER3 ||
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adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_MPEG) &&
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adsi->pwfxDst->wFormatTag == WAVE_FORMAT_PCM)
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{
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nblocks = adss->cbDstLength / (adsi->pwfxDst->nBlockAlign * 1152);
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if (nblocks == 0)
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return ACMERR_NOTPOSSIBLE;
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adss->cbSrcLength = nblocks * (DWORD)(adsi->pwfxSrc->nAvgBytesPerSec * 1152 / adsi->pwfxSrc->nSamplesPerSec);
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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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break;
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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 &&
|
|
(adsi->pwfxDst->wFormatTag == WAVE_FORMAT_MPEGLAYER3 ||
|
|
adsi->pwfxDst->wFormatTag == WAVE_FORMAT_MPEG))
|
|
{
|
|
nblocks = adss->cbSrcLength / (adsi->pwfxSrc->nBlockAlign * 1152);
|
|
if (adss->cbSrcLength % (DWORD)(adsi->pwfxSrc->nBlockAlign * 1152))
|
|
/* Round block count up. */
|
|
nblocks++;
|
|
if (nblocks == 0)
|
|
return ACMERR_NOTPOSSIBLE;
|
|
adss->cbDstLength = 3000 + nblocks * (DWORD)(adsi->pwfxDst->nAvgBytesPerSec * 1152 / adsi->pwfxDst->nSamplesPerSec + 0.5);
|
|
}
|
|
else if ((adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_MPEGLAYER3 ||
|
|
adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_MPEG) &&
|
|
adsi->pwfxDst->wFormatTag == WAVE_FORMAT_PCM)
|
|
{
|
|
nblocks = adss->cbSrcLength / (DWORD)(adsi->pwfxSrc->nAvgBytesPerSec * 1152 / adsi->pwfxSrc->nSamplesPerSec);
|
|
if (adss->cbSrcLength % (DWORD)(adsi->pwfxSrc->nAvgBytesPerSec * 1152 / adsi->pwfxSrc->nSamplesPerSec))
|
|
/* Round block count up. */
|
|
nblocks++;
|
|
if (nblocks == 0)
|
|
return ACMERR_NOTPOSSIBLE;
|
|
adss->cbDstLength = nblocks * 1152 * adsi->pwfxDst->nBlockAlign;
|
|
}
|
|
else
|
|
{
|
|
return MMSYSERR_NOTSUPPORTED;
|
|
}
|
|
break;
|
|
default:
|
|
WARN("Unsupported query %08lx\n", adss->fdwSize);
|
|
return MMSYSERR_NOTSUPPORTED;
|
|
}
|
|
return MMSYSERR_NOERROR;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* MPEG3_StreamConvert
|
|
*
|
|
*/
|
|
static LRESULT MPEG3_StreamConvert(ACMDRVSTREAMINSTANCE *instance, ACMDRVSTREAMHEADER *adsh)
|
|
{
|
|
mpg123_handle *handle = (mpg123_handle *)instance->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))
|
|
{
|
|
mpg123_feedseek(handle, 0, SEEK_SET, NULL);
|
|
mpg123_close(handle);
|
|
mpg123_open_feed(handle);
|
|
}
|
|
|
|
mp3_horse(handle, adsh->pbSrc, &nsrc, adsh->pbDst, &ndst);
|
|
adsh->cbSrcLengthUsed = nsrc;
|
|
adsh->cbDstLengthUsed = ndst;
|
|
|
|
return MMSYSERR_NOERROR;
|
|
}
|
|
|
|
/**************************************************************************
|
|
* MPEG3_DriverProc [exported]
|
|
*/
|
|
LRESULT CALLBACK MPEG3_DriverProc(DWORD_PTR dwDevID, HDRVR hDriv, UINT wMsg,
|
|
LPARAM dwParam1, LPARAM dwParam2)
|
|
{
|
|
TRACE("(%08Ix %p %04x %08Ix %08Ix);\n",
|
|
dwDevID, hDriv, wMsg, dwParam1, dwParam2);
|
|
|
|
switch (wMsg)
|
|
{
|
|
case DRV_LOAD: return 1;
|
|
case DRV_FREE: return 1;
|
|
case DRV_OPEN: return MPEG3_drvOpen((LPSTR)dwParam1);
|
|
case DRV_CLOSE: return MPEG3_drvClose(dwDevID);
|
|
case DRV_ENABLE: return 1;
|
|
case DRV_DISABLE: return 1;
|
|
case DRV_QUERYCONFIGURE: return 1;
|
|
case DRV_CONFIGURE: MessageBoxA(0, "MPEG3 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 MPEG3_DriverDetails((PACMDRIVERDETAILSW)dwParam1);
|
|
|
|
case ACMDM_FORMATTAG_DETAILS:
|
|
return MPEG3_FormatTagDetails((PACMFORMATTAGDETAILSW)dwParam1, dwParam2);
|
|
|
|
case ACMDM_FORMAT_DETAILS:
|
|
return MPEG3_FormatDetails((PACMFORMATDETAILSW)dwParam1, dwParam2);
|
|
|
|
case ACMDM_FORMAT_SUGGEST:
|
|
return MPEG3_FormatSuggest((PACMDRVFORMATSUGGEST)dwParam1);
|
|
|
|
case ACMDM_STREAM_OPEN:
|
|
return MPEG3_StreamOpen((PACMDRVSTREAMINSTANCE)dwParam1);
|
|
|
|
case ACMDM_STREAM_CLOSE:
|
|
return MPEG3_StreamClose((PACMDRVSTREAMINSTANCE)dwParam1);
|
|
|
|
case ACMDM_STREAM_SIZE:
|
|
return MPEG3_StreamSize((PACMDRVSTREAMINSTANCE)dwParam1, (PACMDRVSTREAMSIZE)dwParam2);
|
|
|
|
case ACMDM_STREAM_CONVERT:
|
|
return MPEG3_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);
|
|
}
|
|
}
|