/* $Id$ */ /* * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com) * Copyright (C) 2003-2008 Benny Prijono * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include #include #include #include #include #include #if PJMEDIA_AUDIO_DEV_HAS_WMME #ifdef _MSC_VER # pragma warning(push, 3) #endif #include #include #include #ifdef _MSC_VER # pragma warning(pop) #endif #ifndef PJMEDIA_WMME_DEV_USE_MMDEVICE_API # define PJMEDIA_WMME_DEV_USE_MMDEVICE_API \ (defined(_WIN32_WINNT) && (_WIN32_WINNT>=0x0600)) #endif #if PJMEDIA_WMME_DEV_USE_MMDEVICE_API != 0 # define DRV_QUERYFUNCTIONINSTANCEID (DRV_RESERVED + 17) # define DRV_QUERYFUNCTIONINSTANCEIDSIZE (DRV_RESERVED + 18) #endif /* mingw lacks WAVE_FORMAT_ALAW/MULAW */ #ifndef WAVE_FORMAT_ALAW # define WAVE_FORMAT_ALAW 0x0006 #endif #ifndef WAVE_FORMAT_MULAW # define WAVE_FORMAT_MULAW 0x0007 #endif #if defined(PJ_WIN32_WINCE) && PJ_WIN32_WINCE!=0 # pragma comment(lib, "Coredll.lib") #elif defined(_MSC_VER) # pragma comment(lib, "winmm.lib") #endif #define THIS_FILE "wmme_dev.c" /* WMME device info */ struct wmme_dev_info { pjmedia_aud_dev_info info; unsigned deviceId; const wchar_t *endpointId; }; /* WMME factory */ struct wmme_factory { pjmedia_aud_dev_factory base; pj_pool_t *base_pool; pj_pool_t *pool; pj_pool_factory *pf; unsigned dev_count; struct wmme_dev_info *dev_info; }; /* Individual WMME capture/playback stream descriptor */ struct wmme_channel { union { HWAVEIN In; HWAVEOUT Out; } hWave; WAVEHDR *WaveHdr; HANDLE hEvent; DWORD dwBufIdx; DWORD dwMaxBufIdx; pj_timestamp timestamp; }; /* Sound stream. */ struct wmme_stream { pjmedia_aud_stream base; /**< Base stream */ pjmedia_aud_param param; /**< Settings */ pj_pool_t *pool; /**< Memory pool. */ pjmedia_aud_rec_cb rec_cb; /**< Capture callback. */ pjmedia_aud_play_cb play_cb; /**< Playback callback. */ void *user_data; /**< Application data. */ struct wmme_channel play_strm; /**< Playback stream. */ struct wmme_channel rec_strm; /**< Capture stream. */ void *buffer; /**< Temp. frame buffer. */ pjmedia_format_id fmt_id; /**< Frame format */ pj_uint8_t silence_char; /**< Silence pattern */ unsigned bytes_per_frame; /**< Bytes per frame */ pjmedia_frame_ext *xfrm; /**< Extended frame buffer */ unsigned xfrm_size; /**< Total ext frm size */ pj_thread_t *thread; /**< Thread handle. */ HANDLE thread_quit_event; /**< Quit signal to thread */ }; /* Prototypes */ static pj_status_t factory_init(pjmedia_aud_dev_factory *f); static pj_status_t factory_destroy(pjmedia_aud_dev_factory *f); static pj_status_t factory_refresh(pjmedia_aud_dev_factory *f); static unsigned factory_get_dev_count(pjmedia_aud_dev_factory *f); static pj_status_t factory_get_dev_info(pjmedia_aud_dev_factory *f, unsigned index, pjmedia_aud_dev_info *info); static pj_status_t factory_default_param(pjmedia_aud_dev_factory *f, unsigned index, pjmedia_aud_param *param); static pj_status_t factory_create_stream(pjmedia_aud_dev_factory *f, const pjmedia_aud_param *param, pjmedia_aud_rec_cb rec_cb, pjmedia_aud_play_cb play_cb, void *user_data, pjmedia_aud_stream **p_aud_strm); static pj_status_t stream_get_param(pjmedia_aud_stream *strm, pjmedia_aud_param *param); static pj_status_t stream_get_cap(pjmedia_aud_stream *strm, pjmedia_aud_dev_cap cap, void *value); static pj_status_t stream_set_cap(pjmedia_aud_stream *strm, pjmedia_aud_dev_cap cap, const void *value); static pj_status_t stream_start(pjmedia_aud_stream *strm); static pj_status_t stream_stop(pjmedia_aud_stream *strm); static pj_status_t stream_destroy(pjmedia_aud_stream *strm); /* Operations */ static pjmedia_aud_dev_factory_op factory_op = { &factory_init, &factory_destroy, &factory_get_dev_count, &factory_get_dev_info, &factory_default_param, &factory_create_stream, &factory_refresh }; static pjmedia_aud_stream_op stream_op = { &stream_get_param, &stream_get_cap, &stream_set_cap, &stream_start, &stream_stop, &stream_destroy }; /**************************************************************************** * Factory operations */ /* * Init WMME audio driver. */ pjmedia_aud_dev_factory* pjmedia_wmme_factory(pj_pool_factory *pf) { struct wmme_factory *f; pj_pool_t *pool; pool = pj_pool_create(pf, "WMME base", 1000, 1000, NULL); f = PJ_POOL_ZALLOC_T(pool, struct wmme_factory); f->pf = pf; f->base_pool = pool; f->base.op = &factory_op; return &f->base; } /* Internal: Windows Vista and Windows 7 have their device * names truncated when using the waveXXX api. The names * should be acquired from the MMDevice APIs */ #if PJMEDIA_WMME_DEV_USE_MMDEVICE_API != 0 #define COBJMACROS #include #define INITGUID #include #include DEFINE_GUID(CLSID_MMDeviceEnumerator, 0xBCDE0395, 0xE52F, 0x467C, 0x8E, 0x3D, 0xC4, 0x57, 0x92, 0x91, 0x69, 0x2E); DEFINE_GUID(IID_IMMDeviceEnumerator, 0xA95664D2, 0x9614, 0x4F35, 0xA7, 0x46, 0xDE, 0x8D, 0xB6, 0x36, 0x17, 0xE6); static void get_dev_names(pjmedia_aud_dev_factory *f) { struct wmme_factory *wf = (struct wmme_factory*)f; HRESULT coinit = S_OK; HRESULT hr = S_OK; IMMDeviceEnumerator *pEnumerator = NULL; IMMDeviceCollection *pDevices = NULL; UINT cDevices = 0; UINT nDevice = 0; coinit = CoInitializeEx(NULL, COINIT_MULTITHREADED); if (coinit == RPC_E_CHANGED_MODE) coinit = CoInitializeEx(NULL, COINIT_APARTMENTTHREADED); if (FAILED(coinit)) goto on_error; hr = CoCreateInstance(&CLSID_MMDeviceEnumerator, NULL, CLSCTX_INPROC_SERVER, &IID_IMMDeviceEnumerator, (void**)&pEnumerator); if (FAILED(hr)) goto on_error; hr = IMMDeviceEnumerator_EnumAudioEndpoints(pEnumerator, eAll, DEVICE_STATE_ACTIVE, &pDevices); if (FAILED(hr)) goto on_error; hr = IMMDeviceCollection_GetCount(pDevices, &cDevices); if (FAILED(hr)) goto on_error; for (nDevice = 0; nDevice < cDevices; ++nDevice) { IMMDevice *pDevice = NULL; IPropertyStore *pProps = NULL; LPWSTR pwszID = NULL; PROPVARIANT varName; unsigned i; PropVariantInit(&varName); hr = IMMDeviceCollection_Item(pDevices, nDevice, &pDevice); if (FAILED(hr)) goto cleanup; hr = IMMDevice_GetId(pDevice, &pwszID); if (FAILED(hr)) goto cleanup; hr = IMMDevice_OpenPropertyStore(pDevice, STGM_READ, &pProps); if (FAILED(hr)) goto cleanup; hr = IPropertyStore_GetValue(pProps, &PKEY_Device_FriendlyName, &varName); if (FAILED(hr)) goto cleanup; for (i = 0; i < wf->dev_count; ++i) { if (0 == wcscmp(wf->dev_info[i].endpointId, pwszID)) { wcstombs(wf->dev_info[i].info.name, varName.pwszVal, sizeof(wf->dev_info[i].info.name)); break; } } PropVariantClear(&varName); cleanup: if (pProps) IPropertyStore_Release(pProps); if (pwszID) CoTaskMemFree(pwszID); if (pDevice) hr = IMMDevice_Release(pDevice); } on_error: if (pDevices) hr = IMMDeviceCollection_Release(pDevices); if (pEnumerator) hr = IMMDeviceEnumerator_Release(pEnumerator); if (SUCCEEDED(coinit)) CoUninitialize(); } #else static void get_dev_names(pjmedia_aud_dev_factory *f) { PJ_UNUSED_ARG(f); } #endif /* Internal: build device info from WAVEINCAPS/WAVEOUTCAPS */ static void build_dev_info(UINT deviceId, struct wmme_dev_info *wdi, const WAVEINCAPS *wic, const WAVEOUTCAPS *woc) { #define WIC_WOC(wic,woc,field) (wic? wic->field : woc->field) pj_bzero(wdi, sizeof(*wdi)); wdi->deviceId = deviceId; /* Device Name */ if (deviceId==WAVE_MAPPER) { strncpy(wdi->info.name, "Wave mapper", sizeof(wdi->info.name)); wdi->info.name[sizeof(wdi->info.name)-1] = '\0'; } else { const pj_char_t *szPname = WIC_WOC(wic, woc, szPname); PJ_DECL_ANSI_TEMP_BUF(wTmp, sizeof(wdi->info.name)); strncpy(wdi->info.name, PJ_NATIVE_TO_STRING(szPname, wTmp, PJ_ARRAY_SIZE(wTmp)), sizeof(wdi->info.name)); wdi->info.name[sizeof(wdi->info.name)-1] = '\0'; } wdi->info.default_samples_per_sec = 16000; strcpy(wdi->info.driver, "WMME"); if (wic) { wdi->info.input_count = wic->wChannels; wdi->info.caps |= PJMEDIA_AUD_DEV_CAP_INPUT_LATENCY; /* Sometimes a device can return a rediculously large number of * channels. This happened with an SBLive card on a Windows ME box. * It also happens on Win XP! */ if (wdi->info.input_count<1 || wdi->info.input_count>256) { wdi->info.input_count = 2; } } if (woc) { wdi->info.output_count = woc->wChannels; wdi->info.caps |= PJMEDIA_AUD_DEV_CAP_OUTPUT_LATENCY; if (woc->dwSupport & WAVECAPS_VOLUME) { wdi->info.caps |= PJMEDIA_AUD_DEV_CAP_OUTPUT_VOLUME_SETTING; } /* Sometimes a device can return a rediculously large number of * channels. This happened with an SBLive card on a Windows ME box. * It also happens on Win XP! */ if (wdi->info.output_count<1 || wdi->info.output_count>256) { wdi->info.output_count = 2; } } /* Extended formats */ wdi->info.caps |= PJMEDIA_AUD_DEV_CAP_EXT_FORMAT; wdi->info.ext_fmt_cnt = 2; pjmedia_format_init_audio(&wdi->info.ext_fmt[0], PJMEDIA_FORMAT_PCMU, 8000, 1, 8, 20000, 64000, 64000); pjmedia_format_init_audio(&wdi->info.ext_fmt[0], PJMEDIA_FORMAT_PCMA, 8000, 1, 8, 20000, 64000, 64000); } /* API: init factory */ static pj_status_t factory_init(pjmedia_aud_dev_factory *f) { pj_status_t ret = factory_refresh(f); if (ret != PJ_SUCCESS) return ret; PJ_LOG(4, (THIS_FILE, "WMME initialized")); return PJ_SUCCESS; } /* API: refresh the device list */ static pj_status_t factory_refresh(pjmedia_aud_dev_factory *f) { struct wmme_factory *wf = (struct wmme_factory*)f; unsigned c; int i; int inputDeviceCount, outputDeviceCount, devCount=0; pj_bool_t waveMapperAdded = PJ_FALSE; if (wf->pool != NULL) { pj_pool_release(wf->pool); wf->pool = NULL; } /* Enumerate sound devices */ wf->dev_count = 0; wf->pool = pj_pool_create(wf->pf, "WMME", 1000, 1000, NULL); inputDeviceCount = waveInGetNumDevs(); devCount += inputDeviceCount; outputDeviceCount = waveOutGetNumDevs(); devCount += outputDeviceCount; if (devCount) { /* Assume there is WAVE_MAPPER */ devCount += 2; } if (devCount==0) { PJ_LOG(4,(THIS_FILE, "WMME found no sound devices")); /* Enabling this will cause pjsua-lib initialization to fail when there * is no sound device installed in the system, even when pjsua has been * run with --null-audio. Moreover, it might be better to think that * the WMME backend initialization is successfull, regardless there is * no audio device installed, as later application can check it using * get_dev_count(). return PJMEDIA_EAUD_NODEV; */ return PJ_SUCCESS; } wf->dev_info = (struct wmme_dev_info*) pj_pool_calloc(wf->pool, devCount, sizeof(struct wmme_dev_info)); if (inputDeviceCount && outputDeviceCount) { /* Attempt to add WAVE_MAPPER as input and output device */ WAVEINCAPS wic; MMRESULT mr; pj_bzero(&wic, sizeof(WAVEINCAPS)); mr = waveInGetDevCaps(WAVE_MAPPER, &wic, sizeof(WAVEINCAPS)); if (mr == MMSYSERR_NOERROR) { WAVEOUTCAPS woc; pj_bzero(&woc, sizeof(WAVEOUTCAPS)); mr = waveOutGetDevCaps(WAVE_MAPPER, &woc, sizeof(WAVEOUTCAPS)); if (mr == MMSYSERR_NOERROR) { build_dev_info(WAVE_MAPPER, &wf->dev_info[wf->dev_count], &wic, &woc); wf->dev_info[wf->dev_count].endpointId = L""; ++wf->dev_count; waveMapperAdded = PJ_TRUE; } } } if (inputDeviceCount > 0) { /* -1 is the WAVE_MAPPER */ for (i = (waveMapperAdded? 0 : -1); i < inputDeviceCount; ++i) { UINT uDeviceID = (UINT)((i==-1) ? WAVE_MAPPER : i); WAVEINCAPS wic; MMRESULT mr; DWORD cbEndpointId; pj_bzero(&wic, sizeof(WAVEINCAPS)); mr = waveInGetDevCaps(uDeviceID, &wic, sizeof(WAVEINCAPS)); if (mr == MMSYSERR_NOMEM) return PJ_ENOMEM; if (mr != MMSYSERR_NOERROR) continue; build_dev_info(uDeviceID, &wf->dev_info[wf->dev_count], &wic, NULL); #if PJMEDIA_WMME_DEV_USE_MMDEVICE_API != 0 /* Try to get the endpoint id of the audio device */ wf->dev_info[wf->dev_count].endpointId = L""; mr = waveInMessage((HWAVEIN)IntToPtr(uDeviceID), DRV_QUERYFUNCTIONINSTANCEIDSIZE, (DWORD_PTR)&cbEndpointId, (DWORD_PTR)NULL); if (mr == MMSYSERR_NOERROR) { const wchar_t **epid = &wf->dev_info[wf->dev_count].endpointId; *epid = (const wchar_t*) pj_pool_calloc(wf->pool, cbEndpointId, 1); mr = waveInMessage((HWAVEIN)IntToPtr(uDeviceID), DRV_QUERYFUNCTIONINSTANCEID, (DWORD_PTR)*epid, cbEndpointId); } #else PJ_UNUSED_ARG(cbEndpointId); #endif ++wf->dev_count; } } if( outputDeviceCount > 0 ) { /* -1 is the WAVE_MAPPER */ for (i = (waveMapperAdded? 0 : -1); i < outputDeviceCount; ++i) { UINT uDeviceID = (UINT)((i==-1) ? WAVE_MAPPER : i); WAVEOUTCAPS woc; MMRESULT mr; DWORD cbEndpointId; pj_bzero(&woc, sizeof(WAVEOUTCAPS)); mr = waveOutGetDevCaps(uDeviceID, &woc, sizeof(WAVEOUTCAPS)); if (mr == MMSYSERR_NOMEM) return PJ_ENOMEM; if (mr != MMSYSERR_NOERROR) continue; build_dev_info(uDeviceID, &wf->dev_info[wf->dev_count], NULL, &woc); #if PJMEDIA_WMME_DEV_USE_MMDEVICE_API != 0 /* Try to get the endpoint id of the audio device */ wf->dev_info[wf->dev_count].endpointId = L""; mr = waveOutMessage((HWAVEOUT)IntToPtr(uDeviceID), DRV_QUERYFUNCTIONINSTANCEIDSIZE, (DWORD_PTR)&cbEndpointId, (DWORD_PTR)NULL); if (mr == MMSYSERR_NOERROR) { const wchar_t **epid = &wf->dev_info[wf->dev_count].endpointId; *epid = (const wchar_t*)pj_pool_calloc(wf->pool, cbEndpointId, 1); mr = waveOutMessage((HWAVEOUT)IntToPtr(uDeviceID), DRV_QUERYFUNCTIONINSTANCEID, (DWORD_PTR)*epid, cbEndpointId); } #else PJ_UNUSED_ARG(cbEndpointId); #endif ++wf->dev_count; } } /* On Windows Vista and Windows 7 get the full device names */ get_dev_names(f); PJ_LOG(4, (THIS_FILE, "WMME found %d devices:", wf->dev_count)); for (c = 0; c < wf->dev_count; ++c) { PJ_LOG(4, (THIS_FILE, " dev_id %d: %s (in=%d, out=%d)", c, wf->dev_info[c].info.name, wf->dev_info[c].info.input_count, wf->dev_info[c].info.output_count)); } return PJ_SUCCESS; } /* API: destroy factory */ static pj_status_t factory_destroy(pjmedia_aud_dev_factory *f) { struct wmme_factory *wf = (struct wmme_factory*)f; pj_pool_t *pool = wf->base_pool; pj_pool_release(wf->pool); wf->base_pool = NULL; pj_pool_release(pool); return PJ_SUCCESS; } /* API: get number of devices */ static unsigned factory_get_dev_count(pjmedia_aud_dev_factory *f) { struct wmme_factory *wf = (struct wmme_factory*)f; return wf->dev_count; } /* API: get device info */ static pj_status_t factory_get_dev_info(pjmedia_aud_dev_factory *f, unsigned index, pjmedia_aud_dev_info *info) { struct wmme_factory *wf = (struct wmme_factory*)f; PJ_ASSERT_RETURN(index < wf->dev_count, PJMEDIA_EAUD_INVDEV); pj_memcpy(info, &wf->dev_info[index].info, sizeof(*info)); return PJ_SUCCESS; } /* API: create default device parameter */ static pj_status_t factory_default_param(pjmedia_aud_dev_factory *f, unsigned index, pjmedia_aud_param *param) { struct wmme_factory *wf = (struct wmme_factory*)f; struct wmme_dev_info *di = &wf->dev_info[index]; PJ_ASSERT_RETURN(index < wf->dev_count, PJMEDIA_EAUD_INVDEV); pj_bzero(param, sizeof(*param)); if (di->info.input_count && di->info.output_count) { param->dir = PJMEDIA_DIR_CAPTURE_PLAYBACK; param->rec_id = index; param->play_id = index; } else if (di->info.input_count) { param->dir = PJMEDIA_DIR_CAPTURE; param->rec_id = index; param->play_id = PJMEDIA_AUD_INVALID_DEV; } else if (di->info.output_count) { param->dir = PJMEDIA_DIR_PLAYBACK; param->play_id = index; param->rec_id = PJMEDIA_AUD_INVALID_DEV; } else { return PJMEDIA_EAUD_INVDEV; } param->clock_rate = di->info.default_samples_per_sec; param->channel_count = 1; param->samples_per_frame = di->info.default_samples_per_sec * 20 / 1000; param->bits_per_sample = 16; param->flags = PJMEDIA_AUD_DEV_CAP_INPUT_LATENCY | PJMEDIA_AUD_DEV_CAP_OUTPUT_LATENCY; param->input_latency_ms = PJMEDIA_SND_DEFAULT_REC_LATENCY; param->output_latency_ms = PJMEDIA_SND_DEFAULT_PLAY_LATENCY; return PJ_SUCCESS; } /* Internal: init WAVEFORMATEX */ static pj_status_t init_waveformatex(LPWAVEFORMATEX wfx, const pjmedia_aud_param *prm) { pj_bzero(wfx, sizeof(WAVEFORMATEX)); if (prm->ext_fmt.id == PJMEDIA_FORMAT_L16) { enum { BYTES_PER_SAMPLE = 2 }; wfx->wFormatTag = WAVE_FORMAT_PCM; wfx->nChannels = (pj_uint16_t)prm->channel_count; wfx->nSamplesPerSec = prm->clock_rate; wfx->nBlockAlign = (pj_uint16_t)(prm->channel_count * BYTES_PER_SAMPLE); wfx->nAvgBytesPerSec = prm->clock_rate * prm->channel_count * BYTES_PER_SAMPLE; wfx->wBitsPerSample = 16; return PJ_SUCCESS; } else if ((prm->flags & PJMEDIA_AUD_DEV_CAP_EXT_FORMAT) && (prm->ext_fmt.id == PJMEDIA_FORMAT_PCMA || prm->ext_fmt.id == PJMEDIA_FORMAT_PCMU)) { unsigned ptime; ptime = prm->samples_per_frame * 1000 / (prm->clock_rate * prm->channel_count); wfx->wFormatTag = (pj_uint16_t) ((prm->ext_fmt.id==PJMEDIA_FORMAT_PCMA) ? WAVE_FORMAT_ALAW : WAVE_FORMAT_MULAW); wfx->nChannels = (pj_uint16_t)prm->channel_count; wfx->nSamplesPerSec = prm->clock_rate; wfx->nAvgBytesPerSec = prm->clock_rate * prm->channel_count; wfx->nBlockAlign = (pj_uint16_t)(wfx->nAvgBytesPerSec * ptime / 1000); wfx->wBitsPerSample = 8; wfx->cbSize = 0; return PJ_SUCCESS; } else { return PJMEDIA_EAUD_BADFORMAT; } } /* Get format name */ static const char *get_fmt_name(pj_uint32_t id) { static char name[8]; if (id == PJMEDIA_FORMAT_L16) return "PCM"; pj_memcpy(name, &id, 4); name[4] = '\0'; return name; } /* Internal: create WMME player device. */ static pj_status_t init_player_stream( struct wmme_factory *wf, pj_pool_t *pool, struct wmme_stream *parent, struct wmme_channel *wmme_strm, const pjmedia_aud_param *prm, unsigned buffer_count) { MMRESULT mr; WAVEFORMATEX wfx; unsigned i, ptime; DWORD flag; pj_status_t status; PJ_ASSERT_RETURN(prm->play_id < (int)wf->dev_count, PJ_EINVAL); /* * Create a wait event. */ wmme_strm->hEvent = CreateEvent(NULL, FALSE, FALSE, NULL); if (NULL == wmme_strm->hEvent) return pj_get_os_error(); /* * Set up wave format structure for opening the device. */ status = init_waveformatex(&wfx, prm); if (status != PJ_SUCCESS) return status; ptime = prm->samples_per_frame * 1000 / (prm->clock_rate * prm->channel_count); parent->bytes_per_frame = wfx.nAvgBytesPerSec * ptime / 1000; flag = CALLBACK_EVENT; if (prm->ext_fmt.id == PJMEDIA_FORMAT_L16) flag |= WAVE_FORMAT_DIRECT; /* * Open wave device. */ mr = waveOutOpen(&wmme_strm->hWave.Out, wf->dev_info[prm->play_id].deviceId, &wfx, (DWORD_PTR)wmme_strm->hEvent, 0, flag); if (mr != MMSYSERR_NOERROR) { return PJMEDIA_AUDIODEV_ERRNO_FROM_WMME_OUT(mr); } /* Pause the wave out device */ mr = waveOutPause(wmme_strm->hWave.Out); if (mr != MMSYSERR_NOERROR) { return PJMEDIA_AUDIODEV_ERRNO_FROM_WMME_OUT(mr); } /* * Create the buffers. */ wmme_strm->WaveHdr = (WAVEHDR*) pj_pool_zalloc(pool, sizeof(WAVEHDR) * buffer_count); for (i = 0; i < buffer_count; ++i) { wmme_strm->WaveHdr[i].lpData = pj_pool_zalloc(pool, parent->bytes_per_frame); wmme_strm->WaveHdr[i].dwBufferLength = parent->bytes_per_frame; mr = waveOutPrepareHeader(wmme_strm->hWave.Out, &(wmme_strm->WaveHdr[i]), sizeof(WAVEHDR)); if (mr != MMSYSERR_NOERROR) { return PJMEDIA_AUDIODEV_ERRNO_FROM_WMME_OUT(mr); } mr = waveOutWrite(wmme_strm->hWave.Out, &(wmme_strm->WaveHdr[i]), sizeof(WAVEHDR)); if (mr != MMSYSERR_NOERROR) { return PJMEDIA_AUDIODEV_ERRNO_FROM_WMME_OUT(mr); } } wmme_strm->dwBufIdx = 0; wmme_strm->dwMaxBufIdx = buffer_count; wmme_strm->timestamp.u64 = 0; /* Done setting up play device. */ PJ_LOG(4, (THIS_FILE, " WaveAPI Sound player \"%s\" initialized (" "format=%s, clock_rate=%d, " "channel_count=%d, samples_per_frame=%d (%dms))", wf->dev_info[prm->play_id].info.name, get_fmt_name(prm->ext_fmt.id), prm->clock_rate, prm->channel_count, prm->samples_per_frame, prm->samples_per_frame * 1000 / prm->clock_rate)); return PJ_SUCCESS; } /* Internal: create Windows Multimedia recorder device */ static pj_status_t init_capture_stream( struct wmme_factory *wf, pj_pool_t *pool, struct wmme_stream *parent, struct wmme_channel *wmme_strm, const pjmedia_aud_param *prm, unsigned buffer_count) { MMRESULT mr; WAVEFORMATEX wfx; DWORD flag; unsigned i, ptime; PJ_ASSERT_RETURN(prm->rec_id < (int)wf->dev_count, PJ_EINVAL); /* * Create a wait event. */ wmme_strm->hEvent = CreateEvent(NULL, FALSE, FALSE, NULL); if (NULL == wmme_strm->hEvent) { return pj_get_os_error(); } /* * Set up wave format structure for opening the device. */ init_waveformatex(&wfx, prm); ptime = prm->samples_per_frame * 1000 / (prm->clock_rate * prm->channel_count); parent->bytes_per_frame = wfx.nAvgBytesPerSec * ptime / 1000; flag = CALLBACK_EVENT; if (prm->ext_fmt.id == PJMEDIA_FORMAT_L16) flag |= WAVE_FORMAT_DIRECT; /* * Open wave device. */ mr = waveInOpen(&wmme_strm->hWave.In, wf->dev_info[prm->rec_id].deviceId, &wfx, (DWORD_PTR)wmme_strm->hEvent, 0, flag); if (mr != MMSYSERR_NOERROR) { return PJMEDIA_AUDIODEV_ERRNO_FROM_WMME_IN(mr); } /* * Create the buffers. */ wmme_strm->WaveHdr = (WAVEHDR*) pj_pool_zalloc(pool, sizeof(WAVEHDR) * buffer_count); for (i = 0; i < buffer_count; ++i) { wmme_strm->WaveHdr[i].lpData = pj_pool_zalloc(pool, parent->bytes_per_frame); wmme_strm->WaveHdr[i].dwBufferLength = parent->bytes_per_frame; mr = waveInPrepareHeader(wmme_strm->hWave.In, &(wmme_strm->WaveHdr[i]), sizeof(WAVEHDR)); if (mr != MMSYSERR_NOERROR) { return PJMEDIA_AUDIODEV_ERRNO_FROM_WMME_IN(mr); } mr = waveInAddBuffer(wmme_strm->hWave.In, &(wmme_strm->WaveHdr[i]), sizeof(WAVEHDR)); if (mr != MMSYSERR_NOERROR) { return PJMEDIA_AUDIODEV_ERRNO_FROM_WMME_IN(mr); } } wmme_strm->dwBufIdx = 0; wmme_strm->dwMaxBufIdx = buffer_count; wmme_strm->timestamp.u64 = 0; /* Done setting up play device. */ PJ_LOG(4,(THIS_FILE, " WaveAPI Sound recorder \"%s\" initialized " "(format=%s, clock_rate=%d, " "channel_count=%d, samples_per_frame=%d (%dms))", wf->dev_info[prm->rec_id].info.name, get_fmt_name(prm->ext_fmt.id), prm->clock_rate, prm->channel_count, prm->samples_per_frame, prm->samples_per_frame * 1000 / prm->clock_rate)); return PJ_SUCCESS; } /* WMME capture and playback thread. */ static int PJ_THREAD_FUNC wmme_dev_thread(void *arg) { struct wmme_stream *strm = (struct wmme_stream*)arg; HANDLE events[3]; unsigned eventCount; pj_status_t status = PJ_SUCCESS; static unsigned rec_cnt, play_cnt; enum { MAX_BURST = 1000 }; rec_cnt = play_cnt = 0; eventCount = 0; events[eventCount++] = strm->thread_quit_event; if (strm->param.dir & PJMEDIA_DIR_PLAYBACK) events[eventCount++] = strm->play_strm.hEvent; if (strm->param.dir & PJMEDIA_DIR_CAPTURE) events[eventCount++] = strm->rec_strm.hEvent; /* Raise self priority. We don't want the audio to be distorted by * system activity. */ #if defined(PJ_WIN32_WINCE) && PJ_WIN32_WINCE != 0 if (strm->param.dir & PJMEDIA_DIR_PLAYBACK) CeSetThreadPriority(GetCurrentThread(), 153); else CeSetThreadPriority(GetCurrentThread(), 247); #else SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_TIME_CRITICAL); #endif /* * Loop while not signalled to quit, wait for event objects to be * signalled by WMME capture and play buffer. */ while (status == PJ_SUCCESS) { DWORD rc; pjmedia_dir signalled_dir; /* Swap hWaveIn and hWaveOut to get equal opportunity for both */ if (eventCount==3) { HANDLE hTemp = events[2]; events[2] = events[1]; events[1] = hTemp; } rc = WaitForMultipleObjects(eventCount, events, FALSE, INFINITE); if (rc < WAIT_OBJECT_0 || rc >= WAIT_OBJECT_0 + eventCount) continue; if (rc == WAIT_OBJECT_0) break; if (rc == (WAIT_OBJECT_0 + 1)) { if (events[1] == strm->play_strm.hEvent) signalled_dir = PJMEDIA_DIR_PLAYBACK; else signalled_dir = PJMEDIA_DIR_CAPTURE; } else { if (events[2] == strm->play_strm.hEvent) signalled_dir = PJMEDIA_DIR_PLAYBACK; else signalled_dir = PJMEDIA_DIR_CAPTURE; } if (signalled_dir == PJMEDIA_DIR_PLAYBACK) { struct wmme_channel *wmme_strm = &strm->play_strm; unsigned burst; status = PJ_SUCCESS; /* * Windows Multimedia has requested us to feed some frames to * playback buffer. */ for (burst=0; burstWaveHdr[wmme_strm->dwBufIdx].dwFlags & WHDR_DONE); ++burst) { void *buffer = wmme_strm->WaveHdr[wmme_strm->dwBufIdx].lpData; pjmedia_frame pcm_frame, *frame; MMRESULT mr = MMSYSERR_NOERROR; //PJ_LOG(5,(THIS_FILE, "Finished writing buffer %d", // wmme_strm->dwBufIdx)); if (strm->fmt_id == PJMEDIA_FORMAT_L16) { /* PCM mode */ frame = &pcm_frame; frame->type = PJMEDIA_FRAME_TYPE_AUDIO; frame->size = strm->bytes_per_frame; frame->buf = buffer; frame->timestamp.u64 = wmme_strm->timestamp.u64; frame->bit_info = 0; } else { /* Codec mode */ frame = &strm->xfrm->base; strm->xfrm->base.type = PJMEDIA_FRAME_TYPE_EXTENDED; strm->xfrm->base.size = strm->bytes_per_frame; strm->xfrm->base.buf = NULL; strm->xfrm->base.timestamp.u64 = wmme_strm->timestamp.u64; strm->xfrm->base.bit_info = 0; } /* Get frame from application. */ //PJ_LOG(5,(THIS_FILE, "xxx %u play_cb", play_cnt++)); status = (*strm->play_cb)(strm->user_data, frame); if (status != PJ_SUCCESS) break; if (strm->fmt_id == PJMEDIA_FORMAT_L16) { /* PCM mode */ if (frame->type == PJMEDIA_FRAME_TYPE_NONE) { pj_bzero(buffer, strm->bytes_per_frame); } else if (frame->type == PJMEDIA_FRAME_TYPE_EXTENDED) { pj_assert(!"Frame type not supported"); } else if (frame->type == PJMEDIA_FRAME_TYPE_AUDIO) { /* Nothing to do */ } else { pj_assert(!"Frame type not supported"); } } else { /* Codec mode */ if (frame->type == PJMEDIA_FRAME_TYPE_NONE) { pj_memset(buffer, strm->silence_char, strm->bytes_per_frame); } else if (frame->type == PJMEDIA_FRAME_TYPE_EXTENDED) { unsigned sz; sz = pjmedia_frame_ext_copy_payload(strm->xfrm, buffer, strm->bytes_per_frame); if (sz < strm->bytes_per_frame) { pj_memset((char*)buffer+sz, strm->silence_char, strm->bytes_per_frame - sz); } } else { pj_assert(!"Frame type not supported"); } } /* Write to the device. */ mr = waveOutWrite(wmme_strm->hWave.Out, &(wmme_strm->WaveHdr[wmme_strm->dwBufIdx]), sizeof(WAVEHDR)); if (mr != MMSYSERR_NOERROR) { status = PJMEDIA_AUDIODEV_ERRNO_FROM_WMME_OUT(mr); break; } /* Increment position. */ if (++wmme_strm->dwBufIdx >= wmme_strm->dwMaxBufIdx) wmme_strm->dwBufIdx = 0; wmme_strm->timestamp.u64 += strm->param.samples_per_frame / strm->param.channel_count; } /* for */ } else { struct wmme_channel *wmme_strm = &strm->rec_strm; unsigned burst; MMRESULT mr = MMSYSERR_NOERROR; status = PJ_SUCCESS; /* * Windows Multimedia has indicated that it has some frames ready * in the capture buffer. Get as much frames as possible to * prevent overflows. */ #if 0 { static DWORD tc = 0; DWORD now = GetTickCount(); DWORD i = 0; DWORD bits = 0; if (tc == 0) tc = now; for (i = 0; i < wmme_strm->dwMaxBufIdx; ++i) { bits = bits << 4; bits |= wmme_strm->WaveHdr[i].dwFlags & WHDR_DONE; } PJ_LOG(5,(THIS_FILE, "Record Signal> Index: %d, Delta: %4.4d, " "Flags: %6.6x\n", wmme_strm->dwBufIdx, now - tc, bits)); tc = now; } #endif for (burst=0; burstWaveHdr[wmme_strm->dwBufIdx].dwFlags & WHDR_DONE); ++burst) { char* buffer = (char*) wmme_strm->WaveHdr[wmme_strm->dwBufIdx].lpData; unsigned cap_len = wmme_strm->WaveHdr[wmme_strm->dwBufIdx].dwBytesRecorded; pjmedia_frame pcm_frame, *frame; /* PJ_LOG(5,(THIS_FILE, "Read %d bytes from buffer %d", cap_len, wmme_strm->dwBufIdx)); */ if (strm->fmt_id == PJMEDIA_FORMAT_L16) { /* PCM mode */ if (cap_len < strm->bytes_per_frame) pj_bzero(buffer + cap_len, strm->bytes_per_frame - cap_len); /* Copy the audio data out of the wave buffer. */ pj_memcpy(strm->buffer, buffer, strm->bytes_per_frame); /* Prepare frame */ frame = &pcm_frame; frame->type = PJMEDIA_FRAME_TYPE_AUDIO; frame->buf = strm->buffer; frame->size = strm->bytes_per_frame; frame->timestamp.u64 = wmme_strm->timestamp.u64; frame->bit_info = 0; } else { /* Codec mode */ frame = &strm->xfrm->base; frame->type = PJMEDIA_FRAME_TYPE_EXTENDED; frame->buf = NULL; frame->size = strm->bytes_per_frame; frame->timestamp.u64 = wmme_strm->timestamp.u64; frame->bit_info = 0; strm->xfrm->samples_cnt = 0; strm->xfrm->subframe_cnt = 0; pjmedia_frame_ext_append_subframe( strm->xfrm, buffer, strm->bytes_per_frame *8, strm->param.samples_per_frame ); } /* Re-add the buffer to the device. */ mr = waveInAddBuffer(wmme_strm->hWave.In, &(wmme_strm->WaveHdr[wmme_strm->dwBufIdx]), sizeof(WAVEHDR)); if (mr != MMSYSERR_NOERROR) { status = PJMEDIA_AUDIODEV_ERRNO_FROM_WMME_IN(mr); break; } /* Call callback */ //PJ_LOG(5,(THIS_FILE, "xxx %u rec_cb", rec_cnt++)); status = (*strm->rec_cb)(strm->user_data, frame); if (status != PJ_SUCCESS) break; /* Increment position. */ if (++wmme_strm->dwBufIdx >= wmme_strm->dwMaxBufIdx) wmme_strm->dwBufIdx = 0; wmme_strm->timestamp.u64 += strm->param.samples_per_frame / strm->param.channel_count; } /* for */ } } PJ_LOG(5,(THIS_FILE, "WMME: thread stopping..")); return 0; } /* API: create stream */ static pj_status_t factory_create_stream(pjmedia_aud_dev_factory *f, const pjmedia_aud_param *param, pjmedia_aud_rec_cb rec_cb, pjmedia_aud_play_cb play_cb, void *user_data, pjmedia_aud_stream **p_aud_strm) { struct wmme_factory *wf = (struct wmme_factory*)f; pj_pool_t *pool; struct wmme_stream *strm; pj_uint8_t silence_char; pj_status_t status; switch (param->ext_fmt.id) { case PJMEDIA_FORMAT_L16: silence_char = '\0'; break; case PJMEDIA_FORMAT_ALAW: silence_char = (pj_uint8_t)'\xd5'; break; case PJMEDIA_FORMAT_ULAW: silence_char = (pj_uint8_t)'\xff'; break; default: return PJMEDIA_EAUD_BADFORMAT; } /* Create and Initialize stream descriptor */ pool = pj_pool_create(wf->pf, "wmme-dev", 1000, 1000, NULL); PJ_ASSERT_RETURN(pool != NULL, PJ_ENOMEM); strm = PJ_POOL_ZALLOC_T(pool, struct wmme_stream); pj_memcpy(&strm->param, param, sizeof(*param)); strm->pool = pool; strm->rec_cb = rec_cb; strm->play_cb = play_cb; strm->user_data = user_data; strm->fmt_id = param->ext_fmt.id; strm->silence_char = silence_char; /* Create player stream */ if (param->dir & PJMEDIA_DIR_PLAYBACK) { unsigned buf_count; if ((param->flags & PJMEDIA_AUD_DEV_CAP_OUTPUT_LATENCY)==0) { strm->param.flags |= PJMEDIA_AUD_DEV_CAP_OUTPUT_LATENCY; strm->param.output_latency_ms = PJMEDIA_SND_DEFAULT_PLAY_LATENCY; } buf_count = strm->param.output_latency_ms * param->clock_rate * param->channel_count / param->samples_per_frame / 1000; status = init_player_stream(wf, strm->pool, strm, &strm->play_strm, param, buf_count); if (status != PJ_SUCCESS) { stream_destroy(&strm->base); return status; } } /* Create capture stream */ if (param->dir & PJMEDIA_DIR_CAPTURE) { unsigned buf_count; if ((param->flags & PJMEDIA_AUD_DEV_CAP_INPUT_LATENCY)==0) { strm->param.flags |= PJMEDIA_AUD_DEV_CAP_INPUT_LATENCY; strm->param.input_latency_ms = PJMEDIA_SND_DEFAULT_REC_LATENCY; } buf_count = strm->param.input_latency_ms * param->clock_rate * param->channel_count / param->samples_per_frame / 1000; status = init_capture_stream(wf, strm->pool, strm, &strm->rec_strm, param, buf_count); if (status != PJ_SUCCESS) { stream_destroy(&strm->base); return status; } } strm->buffer = pj_pool_alloc(pool, strm->bytes_per_frame); if (!strm->buffer) { pj_pool_release(pool); return PJ_ENOMEM; } /* If format is extended, must create buffer for the extended frame. */ if (strm->fmt_id != PJMEDIA_FORMAT_L16) { strm->xfrm_size = sizeof(pjmedia_frame_ext) + 32 * sizeof(pjmedia_frame_ext_subframe) + strm->bytes_per_frame + 4; strm->xfrm = (pjmedia_frame_ext*) pj_pool_alloc(pool, strm->xfrm_size); } /* Create the stop event */ strm->thread_quit_event = CreateEvent(NULL, FALSE, FALSE, NULL); if (strm->thread_quit_event == NULL) { status = pj_get_os_error(); stream_destroy(&strm->base); return status; } /* Create and start the thread */ status = pj_thread_create(pool, "wmme", &wmme_dev_thread, strm, 0, 0, &strm->thread); if (status != PJ_SUCCESS) { stream_destroy(&strm->base); return status; } /* Apply the remaining settings */ if (param->flags & PJMEDIA_AUD_DEV_CAP_OUTPUT_VOLUME_SETTING) { stream_set_cap(&strm->base, PJMEDIA_AUD_DEV_CAP_OUTPUT_VOLUME_SETTING, ¶m->output_vol); } /* Done */ strm->base.op = &stream_op; *p_aud_strm = &strm->base; return PJ_SUCCESS; } /* API: Get stream info. */ static pj_status_t stream_get_param(pjmedia_aud_stream *s, pjmedia_aud_param *pi) { struct wmme_stream *strm = (struct wmme_stream*)s; PJ_ASSERT_RETURN(strm && pi, PJ_EINVAL); pj_memcpy(pi, &strm->param, sizeof(*pi)); /* Update the volume setting */ if (stream_get_cap(s, PJMEDIA_AUD_DEV_CAP_OUTPUT_VOLUME_SETTING, &pi->output_vol) == PJ_SUCCESS) { pi->flags |= PJMEDIA_AUD_DEV_CAP_OUTPUT_VOLUME_SETTING; } return PJ_SUCCESS; } /* API: get capability */ static pj_status_t stream_get_cap(pjmedia_aud_stream *s, pjmedia_aud_dev_cap cap, void *pval) { struct wmme_stream *strm = (struct wmme_stream*)s; PJ_ASSERT_RETURN(s && pval, PJ_EINVAL); if (cap==PJMEDIA_AUD_DEV_CAP_INPUT_LATENCY && (strm->param.dir & PJMEDIA_DIR_CAPTURE)) { /* Recording latency */ *(unsigned*)pval = strm->param.input_latency_ms; return PJ_SUCCESS; } else if (cap==PJMEDIA_AUD_DEV_CAP_OUTPUT_LATENCY && (strm->param.dir & PJMEDIA_DIR_PLAYBACK)) { /* Playback latency */ *(unsigned*)pval = strm->param.output_latency_ms; return PJ_SUCCESS; } else if (cap==PJMEDIA_AUD_DEV_CAP_OUTPUT_VOLUME_SETTING && strm->play_strm.hWave.Out) { /* Output volume setting */ DWORD waveVol; MMRESULT mr; mr = waveOutGetVolume(strm->play_strm.hWave.Out, &waveVol); if (mr != MMSYSERR_NOERROR) { return PJMEDIA_AUDIODEV_ERRNO_FROM_WMME_OUT(mr); } waveVol &= 0xFFFF; *(unsigned*)pval = (waveVol * 100) / 0xFFFF; return PJ_SUCCESS; } else { return PJMEDIA_EAUD_INVCAP; } } /* API: set capability */ static pj_status_t stream_set_cap(pjmedia_aud_stream *s, pjmedia_aud_dev_cap cap, const void *pval) { struct wmme_stream *strm = (struct wmme_stream*)s; PJ_ASSERT_RETURN(s && pval, PJ_EINVAL); if (cap==PJMEDIA_AUD_DEV_CAP_OUTPUT_VOLUME_SETTING && strm->play_strm.hWave.Out) { /* Output volume setting */ unsigned vol = *(unsigned*)pval; DWORD waveVol; MMRESULT mr; pj_status_t status; if (vol > 100) vol = 100; waveVol = (vol * 0xFFFF) / 100; waveVol |= (waveVol << 16); mr = waveOutSetVolume(strm->play_strm.hWave.Out, waveVol); status = (mr==MMSYSERR_NOERROR)? PJ_SUCCESS : PJMEDIA_AUDIODEV_ERRNO_FROM_WMME_OUT(mr); if (status == PJ_SUCCESS) { strm->param.output_vol = *(unsigned*)pval; } return status; } return PJMEDIA_EAUD_INVCAP; } /* API: Start stream. */ static pj_status_t stream_start(pjmedia_aud_stream *strm) { struct wmme_stream *stream = (struct wmme_stream*)strm; MMRESULT mr; if (stream->play_strm.hWave.Out != NULL) { mr = waveOutRestart(stream->play_strm.hWave.Out); if (mr != MMSYSERR_NOERROR) { return PJMEDIA_AUDIODEV_ERRNO_FROM_WMME_OUT(mr); } PJ_LOG(4,(THIS_FILE, "WMME playback stream started")); } if (stream->rec_strm.hWave.In != NULL) { mr = waveInStart(stream->rec_strm.hWave.In); if (mr != MMSYSERR_NOERROR) { return PJMEDIA_AUDIODEV_ERRNO_FROM_WMME_IN(mr); } PJ_LOG(4,(THIS_FILE, "WMME capture stream started")); } return PJ_SUCCESS; } /* API: Stop stream. */ static pj_status_t stream_stop(pjmedia_aud_stream *strm) { struct wmme_stream *stream = (struct wmme_stream*)strm; MMRESULT mr; PJ_ASSERT_RETURN(stream != NULL, PJ_EINVAL); if (stream->play_strm.hWave.Out != NULL) { mr = waveOutPause(stream->play_strm.hWave.Out); if (mr != MMSYSERR_NOERROR) { return PJMEDIA_AUDIODEV_ERRNO_FROM_WMME_OUT(mr); } PJ_LOG(4,(THIS_FILE, "Stopped WMME playback stream")); } if (stream->rec_strm.hWave.In != NULL) { mr = waveInStop(stream->rec_strm.hWave.In); if (mr != MMSYSERR_NOERROR) { return PJMEDIA_AUDIODEV_ERRNO_FROM_WMME_IN(mr); } PJ_LOG(4,(THIS_FILE, "Stopped WMME capture stream")); } return PJ_SUCCESS; } /* API: Destroy stream. */ static pj_status_t stream_destroy(pjmedia_aud_stream *strm) { struct wmme_stream *stream = (struct wmme_stream*)strm; unsigned i; PJ_ASSERT_RETURN(stream != NULL, PJ_EINVAL); stream_stop(strm); /* Stop the stream thread */ if (stream->thread) { SetEvent(stream->thread_quit_event); pj_thread_join(stream->thread); pj_thread_destroy(stream->thread); stream->thread = NULL; } /* Close the thread quit event */ if (stream->thread_quit_event) { CloseHandle(stream->thread_quit_event); stream->thread_quit_event = NULL; } /* Unprepare the headers and close the play device */ if (stream->play_strm.hWave.Out) { waveOutReset(stream->play_strm.hWave.Out); for (i = 0; i < stream->play_strm.dwMaxBufIdx; ++i) waveOutUnprepareHeader(stream->play_strm.hWave.Out, &(stream->play_strm.WaveHdr[i]), sizeof(WAVEHDR)); waveOutClose(stream->play_strm.hWave.Out); stream->play_strm.hWave.Out = NULL; } /* Close the play event */ if (stream->play_strm.hEvent) { CloseHandle(stream->play_strm.hEvent); stream->play_strm.hEvent = NULL; } /* Unprepare the headers and close the record device */ if (stream->rec_strm.hWave.In) { waveInReset(stream->rec_strm.hWave.In); for (i = 0; i < stream->play_strm.dwMaxBufIdx; ++i) waveInUnprepareHeader(stream->rec_strm.hWave.In, &(stream->rec_strm.WaveHdr[i]), sizeof(WAVEHDR)); waveInClose(stream->rec_strm.hWave.In); stream->rec_strm.hWave.In = NULL; } /* Close the record event */ if (stream->rec_strm.hEvent) { CloseHandle(stream->rec_strm.hEvent); stream->rec_strm.hEvent = NULL; } pj_pool_release(stream->pool); return PJ_SUCCESS; } #endif /* PJMEDIA_AUDIO_DEV_HAS_WMME */