/** * OpenAL cross platform audio library * Copyright (C) 1999-2007 by authors. * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. * Or go to http://www.gnu.org/copyleft/lgpl.html */ #include "config.h" #include #include #include #ifdef HAVE_DLFCN_H #include #endif #include "alMain.h" #include "AL/al.h" #include "AL/alc.h" #include typedef struct { snd_pcm_t *pcmHandle; snd_pcm_format_t format; ALvoid *buffer; ALsizei size; RingBuffer *ring; int doCapture; volatile int killNow; ALvoid *thread; } alsa_data; typedef struct { ALCchar *name; int card, dev; } DevMap; static void *alsa_handle; #define MAKE_FUNC(f) static typeof(f) * p##f MAKE_FUNC(snd_strerror); MAKE_FUNC(snd_pcm_open); MAKE_FUNC(snd_pcm_close); MAKE_FUNC(snd_pcm_nonblock); MAKE_FUNC(snd_pcm_frames_to_bytes); MAKE_FUNC(snd_pcm_hw_params_malloc); MAKE_FUNC(snd_pcm_hw_params_free); MAKE_FUNC(snd_pcm_hw_params_any); MAKE_FUNC(snd_pcm_hw_params_set_access); MAKE_FUNC(snd_pcm_hw_params_set_format); MAKE_FUNC(snd_pcm_hw_params_set_channels); MAKE_FUNC(snd_pcm_hw_params_set_periods_near); MAKE_FUNC(snd_pcm_hw_params_set_rate_near); MAKE_FUNC(snd_pcm_hw_params_set_rate); MAKE_FUNC(snd_pcm_hw_params_set_buffer_size_near); MAKE_FUNC(snd_pcm_hw_params_set_period_size_near); MAKE_FUNC(snd_pcm_hw_params_set_buffer_size_min); MAKE_FUNC(snd_pcm_hw_params_get_buffer_size); MAKE_FUNC(snd_pcm_hw_params_get_period_size); MAKE_FUNC(snd_pcm_hw_params_get_access); MAKE_FUNC(snd_pcm_hw_params_get_periods); MAKE_FUNC(snd_pcm_hw_params); MAKE_FUNC(snd_pcm_sw_params_malloc); MAKE_FUNC(snd_pcm_sw_params_current); MAKE_FUNC(snd_pcm_sw_params_set_avail_min); MAKE_FUNC(snd_pcm_sw_params); MAKE_FUNC(snd_pcm_sw_params_free); MAKE_FUNC(snd_pcm_prepare); MAKE_FUNC(snd_pcm_start); MAKE_FUNC(snd_pcm_resume); MAKE_FUNC(snd_pcm_wait); MAKE_FUNC(snd_pcm_state); MAKE_FUNC(snd_pcm_avail_update); MAKE_FUNC(snd_pcm_areas_silence); MAKE_FUNC(snd_pcm_mmap_begin); MAKE_FUNC(snd_pcm_mmap_commit); MAKE_FUNC(snd_pcm_readi); MAKE_FUNC(snd_pcm_writei); MAKE_FUNC(snd_pcm_drain); MAKE_FUNC(snd_pcm_info_malloc); MAKE_FUNC(snd_pcm_info_free); MAKE_FUNC(snd_pcm_info_set_device); MAKE_FUNC(snd_pcm_info_set_subdevice); MAKE_FUNC(snd_pcm_info_set_stream); MAKE_FUNC(snd_pcm_info_get_name); MAKE_FUNC(snd_ctl_pcm_next_device); MAKE_FUNC(snd_ctl_pcm_info); MAKE_FUNC(snd_ctl_open); MAKE_FUNC(snd_ctl_close); MAKE_FUNC(snd_ctl_card_info_malloc); MAKE_FUNC(snd_ctl_card_info_free); MAKE_FUNC(snd_ctl_card_info); MAKE_FUNC(snd_ctl_card_info_get_name); MAKE_FUNC(snd_card_next); #undef MAKE_FUNC static const ALCchar alsaDevice[] = "ALSA Software"; static DevMap *allDevNameMap; static ALuint numDevNames; static DevMap *allCaptureDevNameMap; static ALuint numCaptureDevNames; static int xrun_recovery(snd_pcm_t *handle, int err) { if (err == -EPIPE) { /* under-run */ err = psnd_pcm_prepare(handle); if (err < 0) AL_PRINT("prepare failed: %s\n", psnd_strerror(err)); } else if (err == -ESTRPIPE) { while ((err = psnd_pcm_resume(handle)) == -EAGAIN) Sleep(1); /* wait until the suspend flag is released */ if (err < 0) { err = psnd_pcm_prepare(handle); if (err < 0) AL_PRINT("prepare failed: %s\n", psnd_strerror(err)); } } return err; } static int verify_state(snd_pcm_t *handle) { snd_pcm_state_t state = psnd_pcm_state(handle); if(state == SND_PCM_STATE_DISCONNECTED) return -ENODEV; if(state == SND_PCM_STATE_XRUN) { int err = xrun_recovery(handle, -EPIPE); if(err < 0) return err; } else if(state == SND_PCM_STATE_SUSPENDED) { int err = xrun_recovery(handle, -ESTRPIPE); if(err < 0) return err; } return state; } static ALuint ALSAProc(ALvoid *ptr) { ALCdevice *pDevice = (ALCdevice*)ptr; alsa_data *data = (alsa_data*)pDevice->ExtraData; const snd_pcm_channel_area_t *areas = NULL; snd_pcm_sframes_t avail, commitres; snd_pcm_uframes_t offset, frames; char *WritePtr; int err; while(!data->killNow) { int state = verify_state(data->pcmHandle); if(state < 0) { AL_PRINT("Invalid state detected: %s\n", psnd_strerror(state)); aluHandleDisconnect(pDevice); break; } avail = psnd_pcm_avail_update(data->pcmHandle); if(avail < 0) { AL_PRINT("available update failed: %s\n", psnd_strerror(avail)); continue; } // make sure there's frames to process if(avail >= 0 && avail < (snd_pcm_sframes_t)pDevice->UpdateSize) { if(state != SND_PCM_STATE_RUNNING) { err = psnd_pcm_start(data->pcmHandle); if(err < 0) { AL_PRINT("start failed: %s\n", psnd_strerror(err)); continue; } } if(psnd_pcm_wait(data->pcmHandle, 1000) == 0) AL_PRINT("Wait timeout... buffer size too low?\n"); continue; } avail -= avail%pDevice->UpdateSize; // it is possible that contiguous areas are smaller, thus we use a loop while(avail > 0) { frames = avail; err = psnd_pcm_mmap_begin(data->pcmHandle, &areas, &offset, &frames); if(err < 0) { AL_PRINT("mmap begin error: %s\n", psnd_strerror(err)); break; } WritePtr = (char*)areas->addr + (offset * areas->step / 8); aluMixData(pDevice, WritePtr, frames); commitres = psnd_pcm_mmap_commit(data->pcmHandle, offset, frames); if(commitres < 0 || (commitres-frames) != 0) { AL_PRINT("mmap commit error: %s\n", psnd_strerror(commitres >= 0 ? -EPIPE : commitres)); break; } avail -= frames; } } return 0; } static ALuint ALSANoMMapProc(ALvoid *ptr) { ALCdevice *pDevice = (ALCdevice*)ptr; alsa_data *data = (alsa_data*)pDevice->ExtraData; snd_pcm_sframes_t avail; char *WritePtr; while(!data->killNow) { int state = verify_state(data->pcmHandle); if(state < 0) { AL_PRINT("Invalid state detected: %s\n", psnd_strerror(state)); aluHandleDisconnect(pDevice); break; } WritePtr = data->buffer; avail = data->size / psnd_pcm_frames_to_bytes(data->pcmHandle, 1); aluMixData(pDevice, WritePtr, avail); while(avail > 0) { int ret = psnd_pcm_writei(data->pcmHandle, WritePtr, avail); switch (ret) { case -EAGAIN: continue; case -ESTRPIPE: while((ret=psnd_pcm_resume(data->pcmHandle)) == -EAGAIN) Sleep(1); break; case -EPIPE: break; default: if (ret >= 0) { WritePtr += psnd_pcm_frames_to_bytes(data->pcmHandle, ret); avail -= ret; } break; } if (ret < 0) { ret = psnd_pcm_prepare(data->pcmHandle); if(ret < 0) break; } } } return 0; } static ALuint ALSANoMMapCaptureProc(ALvoid *ptr) { ALCdevice *pDevice = (ALCdevice*)ptr; alsa_data *data = (alsa_data*)pDevice->ExtraData; snd_pcm_sframes_t avail; while(!data->killNow) { int state = verify_state(data->pcmHandle); if(state < 0) { AL_PRINT("Invalid state detected: %s\n", psnd_strerror(state)); aluHandleDisconnect(pDevice); break; } avail = (snd_pcm_uframes_t)data->size / psnd_pcm_frames_to_bytes(data->pcmHandle, 1); avail = psnd_pcm_readi(data->pcmHandle, data->buffer, avail); switch(avail) { case -EAGAIN: continue; case -ESTRPIPE: while((avail=psnd_pcm_resume(data->pcmHandle)) == -EAGAIN) Sleep(1); break; case -EPIPE: break; default: if (avail >= 0 && data->doCapture) WriteRingBuffer(data->ring, data->buffer, avail); break; } if(avail < 0) { avail = psnd_pcm_prepare(data->pcmHandle); if(avail < 0) AL_PRINT("prepare error: %s\n", psnd_strerror(avail)); } } return 0; } static ALCboolean alsa_open_playback(ALCdevice *device, const ALCchar *deviceName) { alsa_data *data; char driver[64]; int i; if(!alsa_handle) return ALC_FALSE; strncpy(driver, GetConfigValue("alsa", "device", "default"), sizeof(driver)-1); driver[sizeof(driver)-1] = 0; if(!deviceName) deviceName = alsaDevice; else if(strcmp(deviceName, alsaDevice) != 0) { size_t idx; for(idx = 0;idx < numDevNames;idx++) { if(allDevNameMap[idx].name && strcmp(deviceName, allDevNameMap[idx].name) == 0) { if(idx > 0) sprintf(driver, "hw:%d,%d", allDevNameMap[idx].card, allDevNameMap[idx].dev); goto open_alsa; } } return ALC_FALSE; } open_alsa: data = (alsa_data*)calloc(1, sizeof(alsa_data)); i = psnd_pcm_open(&data->pcmHandle, driver, SND_PCM_STREAM_PLAYBACK, SND_PCM_NONBLOCK); if(i < 0) { Sleep(200); i = psnd_pcm_open(&data->pcmHandle, driver, SND_PCM_STREAM_PLAYBACK, SND_PCM_NONBLOCK); } if(i >= 0) { i = psnd_pcm_nonblock(data->pcmHandle, 0); if(i < 0) psnd_pcm_close(data->pcmHandle); } if(i < 0) { free(data); AL_PRINT("Could not open playback device '%s': %s\n", driver, psnd_strerror(i)); return ALC_FALSE; } device->szDeviceName = strdup(deviceName); device->ExtraData = data; return ALC_TRUE; } static void alsa_close_playback(ALCdevice *device) { alsa_data *data = (alsa_data*)device->ExtraData; psnd_pcm_close(data->pcmHandle); free(data); device->ExtraData = NULL; } static ALCboolean alsa_reset_playback(ALCdevice *device) { alsa_data *data = (alsa_data*)device->ExtraData; snd_pcm_uframes_t periodSizeInFrames; snd_pcm_sw_params_t *sp = NULL; snd_pcm_hw_params_t *p = NULL; snd_pcm_access_t access; unsigned int periods; unsigned int rate; int allowmmap; char *err; int i; switch(aluBytesFromFormat(device->Format)) { case 1: data->format = SND_PCM_FORMAT_U8; break; case 2: data->format = SND_PCM_FORMAT_S16; break; case 4: data->format = SND_PCM_FORMAT_FLOAT; break; default: AL_PRINT("Unknown format: 0x%x\n", device->Format); return ALC_FALSE; } allowmmap = GetConfigValueBool("alsa", "mmap", 1); periods = device->NumUpdates; periodSizeInFrames = device->UpdateSize; rate = device->Frequency; err = NULL; psnd_pcm_hw_params_malloc(&p); if((i=psnd_pcm_hw_params_any(data->pcmHandle, p)) < 0) err = "any"; /* set interleaved access */ if(err == NULL && (!allowmmap || (i=psnd_pcm_hw_params_set_access(data->pcmHandle, p, SND_PCM_ACCESS_MMAP_INTERLEAVED)) < 0)) { if(periods > 2) periods--; if((i=psnd_pcm_hw_params_set_access(data->pcmHandle, p, SND_PCM_ACCESS_RW_INTERLEAVED)) < 0) err = "set access"; } /* set format (implicitly sets sample bits) */ if(err == NULL && (i=psnd_pcm_hw_params_set_format(data->pcmHandle, p, data->format)) < 0) err = "set format"; /* set channels (implicitly sets frame bits) */ if(err == NULL && (i=psnd_pcm_hw_params_set_channels(data->pcmHandle, p, aluChannelsFromFormat(device->Format))) < 0) err = "set channels"; /* set periods (implicitly constrains period/buffer parameters) */ if(err == NULL && (i=psnd_pcm_hw_params_set_periods_near(data->pcmHandle, p, &periods, NULL)) < 0) err = "set periods near"; /* set rate (implicitly constrains period/buffer parameters) */ if(err == NULL && (i=psnd_pcm_hw_params_set_rate_near(data->pcmHandle, p, &rate, NULL)) < 0) err = "set rate near"; /* set period size in frame units (implicitly sets buffer size/bytes/time and period time/bytes) */ if(err == NULL && (i=psnd_pcm_hw_params_set_period_size_near(data->pcmHandle, p, &periodSizeInFrames, NULL)) < 0) err = "set period size near"; /* install and prepare hardware configuration */ if(err == NULL && (i=psnd_pcm_hw_params(data->pcmHandle, p)) < 0) err = "set params"; if(err == NULL && (i=psnd_pcm_hw_params_get_access(p, &access)) < 0) err = "get access"; if(err == NULL && (i=psnd_pcm_hw_params_get_period_size(p, &periodSizeInFrames, NULL)) < 0) err = "get period size"; if(err == NULL && (i=psnd_pcm_hw_params_get_periods(p, &periods, NULL)) < 0) err = "get periods"; if(err != NULL) { AL_PRINT("%s failed: %s\n", err, psnd_strerror(i)); psnd_pcm_hw_params_free(p); return ALC_FALSE; } psnd_pcm_hw_params_free(p); err = NULL; psnd_pcm_sw_params_malloc(&sp); if((i=psnd_pcm_sw_params_current(data->pcmHandle, sp)) != 0) err = "sw current"; if(err == NULL && (i=psnd_pcm_sw_params_set_avail_min(data->pcmHandle, sp, periodSizeInFrames)) != 0) err = "sw set avail min"; if(err == NULL && (i=psnd_pcm_sw_params(data->pcmHandle, sp)) != 0) err = "sw set params"; if(err != NULL) { AL_PRINT("%s failed: %s\n", err, psnd_strerror(i)); psnd_pcm_sw_params_free(sp); return ALC_FALSE; } psnd_pcm_sw_params_free(sp); data->size = psnd_pcm_frames_to_bytes(data->pcmHandle, periodSizeInFrames); if(access == SND_PCM_ACCESS_RW_INTERLEAVED) { /* Increase periods by one, since the temp buffer counts as an extra * period */ periods++; data->buffer = malloc(data->size); if(!data->buffer) { AL_PRINT("buffer malloc failed\n"); return ALC_FALSE; } data->thread = StartThread(ALSANoMMapProc, device); } else { i = psnd_pcm_prepare(data->pcmHandle); if(i < 0) { AL_PRINT("prepare error: %s\n", psnd_strerror(i)); free(data->buffer); data->buffer = NULL; return ALC_FALSE; } data->thread = StartThread(ALSAProc, device); } if(data->thread == NULL) { AL_PRINT("Could not create playback thread\n"); free(data->buffer); data->buffer = NULL; return ALC_FALSE; } device->UpdateSize = periodSizeInFrames; device->NumUpdates = periods; device->Frequency = rate; return ALC_TRUE; } static void alsa_stop_playback(ALCdevice *device) { alsa_data *data = (alsa_data*)device->ExtraData; if(!data->thread) return; data->killNow = 1; StopThread(data->thread); data->thread = NULL; free(data->buffer); data->buffer = NULL; } static ALCboolean alsa_open_capture(ALCdevice *pDevice, const ALCchar *deviceName) { const char *devName; snd_pcm_hw_params_t *p; snd_pcm_uframes_t bufferSizeInFrames; ALuint frameSize; alsa_data *data; char driver[64]; char *err; int i; if(!alsa_handle) return ALC_FALSE; strncpy(driver, GetConfigValue("alsa", "capture", "default"), sizeof(driver)-1); driver[sizeof(driver)-1] = 0; if(!deviceName) deviceName = allCaptureDevNameMap[0].name; else { size_t idx; for(idx = 0;idx < numCaptureDevNames;idx++) { if(allCaptureDevNameMap[idx].name && strcmp(deviceName, allCaptureDevNameMap[idx].name) == 0) { devName = allCaptureDevNameMap[idx].name; if(idx > 0) sprintf(driver, "plughw:%d,%d", allCaptureDevNameMap[idx].card, allCaptureDevNameMap[idx].dev); goto open_alsa; } } return ALC_FALSE; } open_alsa: data = (alsa_data*)calloc(1, sizeof(alsa_data)); i = psnd_pcm_open(&data->pcmHandle, driver, SND_PCM_STREAM_CAPTURE, SND_PCM_NONBLOCK); if(i < 0) { Sleep(200); i = psnd_pcm_open(&data->pcmHandle, driver, SND_PCM_STREAM_CAPTURE, SND_PCM_NONBLOCK); } if(i >= 0) { i = psnd_pcm_nonblock(data->pcmHandle, 0); if(i < 0) psnd_pcm_close(data->pcmHandle); } if(i < 0) { free(data); AL_PRINT("Could not open capture device '%s': %s\n", driver, psnd_strerror(i)); return ALC_FALSE; } switch(aluBytesFromFormat(pDevice->Format)) { case 1: data->format = SND_PCM_FORMAT_U8; break; case 2: data->format = SND_PCM_FORMAT_S16; break; case 4: data->format = SND_PCM_FORMAT_FLOAT; break; default: AL_PRINT("Unknown format: 0x%x\n", pDevice->Format); psnd_pcm_close(data->pcmHandle); free(data); return ALC_FALSE; } err = NULL; bufferSizeInFrames = pDevice->UpdateSize * pDevice->NumUpdates; psnd_pcm_hw_params_malloc(&p); if((i=psnd_pcm_hw_params_any(data->pcmHandle, p)) < 0) err = "any"; /* set interleaved access */ if(err == NULL && (i=psnd_pcm_hw_params_set_access(data->pcmHandle, p, SND_PCM_ACCESS_RW_INTERLEAVED)) < 0) err = "set access"; /* set format (implicitly sets sample bits) */ if(err == NULL && (i=psnd_pcm_hw_params_set_format(data->pcmHandle, p, data->format)) < 0) err = "set format"; /* set channels (implicitly sets frame bits) */ if(err == NULL && (i=psnd_pcm_hw_params_set_channels(data->pcmHandle, p, aluChannelsFromFormat(pDevice->Format))) < 0) err = "set channels"; /* set rate (implicitly constrains period/buffer parameters) */ if(err == NULL && (i=psnd_pcm_hw_params_set_rate(data->pcmHandle, p, pDevice->Frequency, 0)) < 0) err = "set rate near"; /* set buffer size in frame units (implicitly sets period size/bytes/time and buffer time/bytes) */ if(err == NULL && (i=psnd_pcm_hw_params_set_buffer_size_near(data->pcmHandle, p, &bufferSizeInFrames)) < 0) err = "set buffer size near"; /* install and prepare hardware configuration */ if(err == NULL && (i=psnd_pcm_hw_params(data->pcmHandle, p)) < 0) err = "set params"; if(err != NULL) { AL_PRINT("%s failed: %s\n", err, psnd_strerror(i)); psnd_pcm_hw_params_free(p); psnd_pcm_close(data->pcmHandle); free(data); return ALC_FALSE; } if((i=psnd_pcm_hw_params_get_period_size(p, &bufferSizeInFrames, NULL)) < 0) { AL_PRINT("get size failed: %s\n", psnd_strerror(i)); psnd_pcm_hw_params_free(p); psnd_pcm_close(data->pcmHandle); free(data); return ALC_FALSE; } psnd_pcm_hw_params_free(p); frameSize = aluChannelsFromFormat(pDevice->Format); frameSize *= aluBytesFromFormat(pDevice->Format); data->ring = CreateRingBuffer(frameSize, pDevice->UpdateSize*pDevice->NumUpdates); if(!data->ring) { AL_PRINT("ring buffer create failed\n"); psnd_pcm_close(data->pcmHandle); free(data); return ALC_FALSE; } data->size = psnd_pcm_frames_to_bytes(data->pcmHandle, bufferSizeInFrames); data->buffer = malloc(data->size); if(!data->buffer) { AL_PRINT("buffer malloc failed\n"); psnd_pcm_close(data->pcmHandle); DestroyRingBuffer(data->ring); free(data); return ALC_FALSE; } pDevice->ExtraData = data; data->thread = StartThread(ALSANoMMapCaptureProc, pDevice); if(data->thread == NULL) { AL_PRINT("Could not create capture thread\n"); psnd_pcm_close(data->pcmHandle); DestroyRingBuffer(data->ring); pDevice->ExtraData = NULL; free(data->buffer); free(data); return ALC_FALSE; } pDevice->szDeviceName = strdup(deviceName); return ALC_TRUE; } static void alsa_close_capture(ALCdevice *pDevice) { alsa_data *data = (alsa_data*)pDevice->ExtraData; data->killNow = 1; StopThread(data->thread); psnd_pcm_close(data->pcmHandle); DestroyRingBuffer(data->ring); free(data->buffer); free(data); pDevice->ExtraData = NULL; } static void alsa_start_capture(ALCdevice *pDevice) { alsa_data *data = (alsa_data*)pDevice->ExtraData; data->doCapture = 1; } static void alsa_stop_capture(ALCdevice *pDevice) { alsa_data *data = (alsa_data*)pDevice->ExtraData; data->doCapture = 0; } static void alsa_capture_samples(ALCdevice *pDevice, ALCvoid *pBuffer, ALCuint lSamples) { alsa_data *data = (alsa_data*)pDevice->ExtraData; if(lSamples <= (ALCuint)RingBufferSize(data->ring)) ReadRingBuffer(data->ring, pBuffer, lSamples); else SetALCError(ALC_INVALID_VALUE); } static ALCuint alsa_available_samples(ALCdevice *pDevice) { alsa_data *data = (alsa_data*)pDevice->ExtraData; return RingBufferSize(data->ring); } BackendFuncs alsa_funcs = { alsa_open_playback, alsa_close_playback, alsa_reset_playback, alsa_stop_playback, alsa_open_capture, alsa_close_capture, alsa_start_capture, alsa_stop_capture, alsa_capture_samples, alsa_available_samples }; void alc_alsa_init(BackendFuncs *func_list) { char *str; if(func_list) *func_list = alsa_funcs; #ifdef HAVE_DLFCN_H alsa_handle = dlopen("libasound.so.2", RTLD_NOW); if(!alsa_handle) return; dlerror(); #define LOAD_FUNC(f) do { \ p##f = (typeof(f)*)dlsym(alsa_handle, #f); \ if((str=dlerror()) != NULL) \ { \ dlclose(alsa_handle); \ alsa_handle = NULL; \ AL_PRINT("Could not load %s from libasound.so.2: %s\n", #f, str); \ return; \ } \ } while(0) #else str = NULL; alsa_handle = (void*)0xDEADBEEF; #define LOAD_FUNC(f) p##f = f #endif LOAD_FUNC(snd_strerror); LOAD_FUNC(snd_pcm_open); LOAD_FUNC(snd_pcm_close); LOAD_FUNC(snd_pcm_nonblock); LOAD_FUNC(snd_pcm_frames_to_bytes); LOAD_FUNC(snd_pcm_hw_params_malloc); LOAD_FUNC(snd_pcm_hw_params_free); LOAD_FUNC(snd_pcm_hw_params_any); LOAD_FUNC(snd_pcm_hw_params_set_access); LOAD_FUNC(snd_pcm_hw_params_set_format); LOAD_FUNC(snd_pcm_hw_params_set_channels); LOAD_FUNC(snd_pcm_hw_params_set_periods_near); LOAD_FUNC(snd_pcm_hw_params_set_rate_near); LOAD_FUNC(snd_pcm_hw_params_set_rate); LOAD_FUNC(snd_pcm_hw_params_set_buffer_size_near); LOAD_FUNC(snd_pcm_hw_params_set_buffer_size_min); LOAD_FUNC(snd_pcm_hw_params_set_period_size_near); LOAD_FUNC(snd_pcm_hw_params_get_buffer_size); LOAD_FUNC(snd_pcm_hw_params_get_period_size); LOAD_FUNC(snd_pcm_hw_params_get_access); LOAD_FUNC(snd_pcm_hw_params_get_periods); LOAD_FUNC(snd_pcm_hw_params); LOAD_FUNC(snd_pcm_sw_params_malloc); LOAD_FUNC(snd_pcm_sw_params_current); LOAD_FUNC(snd_pcm_sw_params_set_avail_min); LOAD_FUNC(snd_pcm_sw_params); LOAD_FUNC(snd_pcm_sw_params_free); LOAD_FUNC(snd_pcm_prepare); LOAD_FUNC(snd_pcm_start); LOAD_FUNC(snd_pcm_resume); LOAD_FUNC(snd_pcm_wait); LOAD_FUNC(snd_pcm_state); LOAD_FUNC(snd_pcm_avail_update); LOAD_FUNC(snd_pcm_areas_silence); LOAD_FUNC(snd_pcm_mmap_begin); LOAD_FUNC(snd_pcm_mmap_commit); LOAD_FUNC(snd_pcm_readi); LOAD_FUNC(snd_pcm_writei); LOAD_FUNC(snd_pcm_drain); LOAD_FUNC(snd_pcm_info_malloc); LOAD_FUNC(snd_pcm_info_free); LOAD_FUNC(snd_pcm_info_set_device); LOAD_FUNC(snd_pcm_info_set_subdevice); LOAD_FUNC(snd_pcm_info_set_stream); LOAD_FUNC(snd_pcm_info_get_name); LOAD_FUNC(snd_ctl_pcm_next_device); LOAD_FUNC(snd_ctl_pcm_info); LOAD_FUNC(snd_ctl_open); LOAD_FUNC(snd_ctl_close); LOAD_FUNC(snd_ctl_card_info_malloc); LOAD_FUNC(snd_ctl_card_info_free); LOAD_FUNC(snd_ctl_card_info); LOAD_FUNC(snd_ctl_card_info_get_name); LOAD_FUNC(snd_card_next); #undef LOAD_FUNC } void alc_alsa_deinit(void) { ALuint i; for(i = 0;i < numDevNames;++i) free(allDevNameMap[i].name); free(allDevNameMap); allDevNameMap = NULL; numDevNames = 0; for(i = 0;i < numCaptureDevNames;++i) free(allCaptureDevNameMap[i].name); free(allCaptureDevNameMap); allCaptureDevNameMap = NULL; numCaptureDevNames = 0; #ifdef HAVE_DLFCN_H if(alsa_handle) dlclose(alsa_handle); #endif alsa_handle = NULL; } void alc_alsa_probe(int type) { snd_ctl_t *handle; int card, err, dev, idx; snd_ctl_card_info_t *info; snd_pcm_info_t *pcminfo; snd_pcm_stream_t stream; char name[128]; ALuint i; if(!alsa_handle) alc_alsa_init(NULL); if(!alsa_handle) return; psnd_ctl_card_info_malloc(&info); psnd_pcm_info_malloc(&pcminfo); if(type == DEVICE_PROBE) AppendDeviceList(alsaDevice); else if(type == ALL_DEVICE_PROBE) { stream = SND_PCM_STREAM_PLAYBACK; card = -1; if(psnd_card_next(&card) < 0 || card < 0) { AL_PRINT("no playback cards found...\n"); psnd_pcm_info_free(pcminfo); psnd_ctl_card_info_free(info); return; } for(i = 0;i < numDevNames;++i) free(allDevNameMap[i].name); allDevNameMap = realloc(allDevNameMap, sizeof(DevMap) * 1); allDevNameMap[0].name = strdup("ALSA Software on default"); AppendAllDeviceList(allDevNameMap[0].name); idx = 1; while(card >= 0) { sprintf(name, "hw:%d", card); if ((err = psnd_ctl_open(&handle, name, 0)) < 0) { AL_PRINT("control open (%i): %s\n", card, psnd_strerror(err)); goto next_card; } if ((err = psnd_ctl_card_info(handle, info)) < 0) { AL_PRINT("control hardware info (%i): %s\n", card, psnd_strerror(err)); psnd_ctl_close(handle); goto next_card; } dev = -1; while(1) { const char *cname, *dname; void *temp; if (psnd_ctl_pcm_next_device(handle, &dev)<0) AL_PRINT("snd_ctl_pcm_next_device failed\n"); if (dev < 0) break; psnd_pcm_info_set_device(pcminfo, dev); psnd_pcm_info_set_subdevice(pcminfo, 0); psnd_pcm_info_set_stream(pcminfo, stream); if ((err = psnd_ctl_pcm_info(handle, pcminfo)) < 0) { if (err != -ENOENT) AL_PRINT("control digital audio info (%i): %s\n", card, psnd_strerror(err)); continue; } temp = realloc(allDevNameMap, sizeof(DevMap) * (idx+1)); if(temp) { allDevNameMap = temp; cname = psnd_ctl_card_info_get_name(info); dname = psnd_pcm_info_get_name(pcminfo); snprintf(name, sizeof(name), "ALSA Software on %s [%s] (hw:%d,%d)", cname, dname, card, dev); AppendAllDeviceList(name); allDevNameMap[idx].name = strdup(name); allDevNameMap[idx].card = card; allDevNameMap[idx].dev = dev; idx++; } } psnd_ctl_close(handle); next_card: if(psnd_card_next(&card) < 0) { AL_PRINT("snd_card_next failed\n"); break; } } numDevNames = idx; } else if(type == CAPTURE_DEVICE_PROBE) { stream = SND_PCM_STREAM_CAPTURE; card = -1; if(psnd_card_next(&card) < 0 || card < 0) { AL_PRINT("no capture cards found...\n"); psnd_pcm_info_free(pcminfo); psnd_ctl_card_info_free(info); return; } for(i = 0;i < numCaptureDevNames;++i) free(allCaptureDevNameMap[i].name); allCaptureDevNameMap = realloc(allCaptureDevNameMap, sizeof(DevMap) * 1); allCaptureDevNameMap[0].name = strdup("ALSA Capture on default"); AppendCaptureDeviceList(allCaptureDevNameMap[0].name); idx = 1; while (card >= 0) { sprintf(name, "hw:%d", card); handle = NULL; if ((err = psnd_ctl_open(&handle, name, 0)) < 0) { AL_PRINT("control open (%i): %s\n", card, psnd_strerror(err)); } if (err >= 0 && (err = psnd_ctl_card_info(handle, info)) < 0) { AL_PRINT("control hardware info (%i): %s\n", card, psnd_strerror(err)); } else if (err >= 0) { dev = -1; while(1) { const char *cname, *dname; void *temp; if (psnd_ctl_pcm_next_device(handle, &dev)<0) AL_PRINT("snd_ctl_pcm_next_device failed\n"); if (dev < 0) break; psnd_pcm_info_set_device(pcminfo, dev); psnd_pcm_info_set_subdevice(pcminfo, 0); psnd_pcm_info_set_stream(pcminfo, stream); if ((err = psnd_ctl_pcm_info(handle, pcminfo)) < 0) { if (err != -ENOENT) AL_PRINT("control digital audio info (%i): %s\n", card, psnd_strerror(err)); continue; } temp = realloc(allCaptureDevNameMap, sizeof(DevMap) * (idx+1)); if(temp) { allCaptureDevNameMap = temp; cname = psnd_ctl_card_info_get_name(info); dname = psnd_pcm_info_get_name(pcminfo); snprintf(name, sizeof(name), "ALSA Capture on %s [%s] (hw:%d,%d)", cname, dname, card, dev); AppendCaptureDeviceList(name); allCaptureDevNameMap[idx].name = strdup(name); allCaptureDevNameMap[idx].card = card; allCaptureDevNameMap[idx].dev = dev; idx++; } } } if(handle) psnd_ctl_close(handle); if(psnd_card_next(&card) < 0) { AL_PRINT("snd_card_next failed\n"); break; } } numCaptureDevNames = idx; } psnd_pcm_info_free(pcminfo); psnd_ctl_card_info_free(info); }