diff options
Diffstat (limited to 'Alc/backends/sndio.cpp')
| -rw-r--r-- | Alc/backends/sndio.cpp | 603 |
1 files changed, 603 insertions, 0 deletions
diff --git a/Alc/backends/sndio.cpp b/Alc/backends/sndio.cpp new file mode 100644 index 00000000..e35ce34e --- /dev/null +++ b/Alc/backends/sndio.cpp @@ -0,0 +1,603 @@ +/** + * 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., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * Or go to http://www.gnu.org/copyleft/lgpl.html + */ + +#include "config.h" + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "alMain.h" +#include "alu.h" +#include "threads.h" +#include "ringbuffer.h" + +#include "backends/base.h" + +#include <sndio.h> + + +static const ALCchar sndio_device[] = "SndIO Default"; + + +struct SndioPlayback final : public ALCbackend { + struct sio_hdl *sndHandle; + + ALvoid *mix_data; + ALsizei data_size; + + ATOMIC(int) killNow; + althrd_t thread; +}; + +static int SndioPlayback_mixerProc(void *ptr); + +static void SndioPlayback_Construct(SndioPlayback *self, ALCdevice *device); +static void SndioPlayback_Destruct(SndioPlayback *self); +static ALCenum SndioPlayback_open(SndioPlayback *self, const ALCchar *name); +static ALCboolean SndioPlayback_reset(SndioPlayback *self); +static ALCboolean SndioPlayback_start(SndioPlayback *self); +static void SndioPlayback_stop(SndioPlayback *self); +static DECLARE_FORWARD2(SndioPlayback, ALCbackend, ALCenum, captureSamples, void*, ALCuint) +static DECLARE_FORWARD(SndioPlayback, ALCbackend, ALCuint, availableSamples) +static DECLARE_FORWARD(SndioPlayback, ALCbackend, ClockLatency, getClockLatency) +static DECLARE_FORWARD(SndioPlayback, ALCbackend, void, lock) +static DECLARE_FORWARD(SndioPlayback, ALCbackend, void, unlock) +DECLARE_DEFAULT_ALLOCATORS(SndioPlayback) + +DEFINE_ALCBACKEND_VTABLE(SndioPlayback); + + +static void SndioPlayback_Construct(SndioPlayback *self, ALCdevice *device) +{ + new (self) SndioPlayback{}; + ALCbackend_Construct(STATIC_CAST(ALCbackend, self), device); + SET_VTABLE2(SndioPlayback, ALCbackend, self); + + self->sndHandle = nullptr; + self->mix_data = nullptr; + ATOMIC_INIT(&self->killNow, AL_TRUE); +} + +static void SndioPlayback_Destruct(SndioPlayback *self) +{ + if(self->sndHandle) + sio_close(self->sndHandle); + self->sndHandle = nullptr; + + al_free(self->mix_data); + self->mix_data = nullptr; + + ALCbackend_Destruct(STATIC_CAST(ALCbackend, self)); + self->~SndioPlayback(); +} + + +static int SndioPlayback_mixerProc(void *ptr) +{ + SndioPlayback *self = static_cast<SndioPlayback*>(ptr); + ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice; + ALsizei frameSize; + size_t wrote; + + SetRTPriority(); + althrd_setname(althrd_current(), MIXER_THREAD_NAME); + + frameSize = FrameSizeFromDevFmt(device->FmtChans, device->FmtType, device->AmbiOrder); + + while(!ATOMIC_LOAD(&self->killNow, almemory_order_acquire) && + ATOMIC_LOAD(&device->Connected, almemory_order_acquire)) + { + ALsizei len = self->data_size; + ALubyte *WritePtr = static_cast<ALubyte*>(self->mix_data); + + SndioPlayback_lock(self); + aluMixData(device, WritePtr, len/frameSize); + SndioPlayback_unlock(self); + while(len > 0 && !ATOMIC_LOAD(&self->killNow, almemory_order_acquire)) + { + wrote = sio_write(self->sndHandle, WritePtr, len); + if(wrote == 0) + { + ERR("sio_write failed\n"); + ALCdevice_Lock(device); + aluHandleDisconnect(device, "Failed to write playback samples"); + ALCdevice_Unlock(device); + break; + } + + len -= wrote; + WritePtr += wrote; + } + } + + return 0; +} + + +static ALCenum SndioPlayback_open(SndioPlayback *self, const ALCchar *name) +{ + ALCdevice *device = STATIC_CAST(ALCbackend,self)->mDevice; + + if(!name) + name = sndio_device; + else if(strcmp(name, sndio_device) != 0) + return ALC_INVALID_VALUE; + + self->sndHandle = sio_open(nullptr, SIO_PLAY, 0); + if(self->sndHandle == nullptr) + { + ERR("Could not open device\n"); + return ALC_INVALID_VALUE; + } + + alstr_copy_cstr(&device->DeviceName, name); + + return ALC_NO_ERROR; +} + +static ALCboolean SndioPlayback_reset(SndioPlayback *self) +{ + ALCdevice *device = STATIC_CAST(ALCbackend,self)->mDevice; + struct sio_par par; + + sio_initpar(&par); + + par.rate = device->Frequency; + par.pchan = ((device->FmtChans != DevFmtMono) ? 2 : 1); + + switch(device->FmtType) + { + case DevFmtByte: + par.bits = 8; + par.sig = 1; + break; + case DevFmtUByte: + par.bits = 8; + par.sig = 0; + break; + case DevFmtFloat: + case DevFmtShort: + par.bits = 16; + par.sig = 1; + break; + case DevFmtUShort: + par.bits = 16; + par.sig = 0; + break; + case DevFmtInt: + par.bits = 32; + par.sig = 1; + break; + case DevFmtUInt: + par.bits = 32; + par.sig = 0; + break; + } + par.le = SIO_LE_NATIVE; + + par.round = device->UpdateSize; + par.appbufsz = device->UpdateSize * (device->NumUpdates-1); + if(!par.appbufsz) par.appbufsz = device->UpdateSize; + + if(!sio_setpar(self->sndHandle, &par) || !sio_getpar(self->sndHandle, &par)) + { + ERR("Failed to set device parameters\n"); + return ALC_FALSE; + } + + if(par.bits != par.bps*8) + { + ERR("Padded samples not supported (%u of %u bits)\n", par.bits, par.bps*8); + return ALC_FALSE; + } + + device->Frequency = par.rate; + device->FmtChans = ((par.pchan==1) ? DevFmtMono : DevFmtStereo); + + if(par.bits == 8 && par.sig == 1) + device->FmtType = DevFmtByte; + else if(par.bits == 8 && par.sig == 0) + device->FmtType = DevFmtUByte; + else if(par.bits == 16 && par.sig == 1) + device->FmtType = DevFmtShort; + else if(par.bits == 16 && par.sig == 0) + device->FmtType = DevFmtUShort; + else if(par.bits == 32 && par.sig == 1) + device->FmtType = DevFmtInt; + else if(par.bits == 32 && par.sig == 0) + device->FmtType = DevFmtUInt; + else + { + ERR("Unhandled sample format: %s %u-bit\n", (par.sig?"signed":"unsigned"), par.bits); + return ALC_FALSE; + } + + device->UpdateSize = par.round; + device->NumUpdates = (par.bufsz/par.round) + 1; + + SetDefaultChannelOrder(device); + + return ALC_TRUE; +} + +static ALCboolean SndioPlayback_start(SndioPlayback *self) +{ + ALCdevice *device = STATIC_CAST(ALCbackend,self)->mDevice; + + self->data_size = device->UpdateSize * FrameSizeFromDevFmt( + device->FmtChans, device->FmtType, device->AmbiOrder + ); + al_free(self->mix_data); + self->mix_data = al_calloc(16, self->data_size); + + if(!sio_start(self->sndHandle)) + { + ERR("Error starting playback\n"); + return ALC_FALSE; + } + + ATOMIC_STORE(&self->killNow, AL_FALSE, almemory_order_release); + if(althrd_create(&self->thread, SndioPlayback_mixerProc, self) != althrd_success) + { + sio_stop(self->sndHandle); + return ALC_FALSE; + } + + return ALC_TRUE; +} + +static void SndioPlayback_stop(SndioPlayback *self) +{ + int res; + + if(ATOMIC_EXCHANGE(&self->killNow, AL_TRUE, almemory_order_acq_rel)) + return; + althrd_join(self->thread, &res); + + if(!sio_stop(self->sndHandle)) + ERR("Error stopping device\n"); + + al_free(self->mix_data); + self->mix_data = nullptr; +} + + +struct SndioCapture final : public ALCbackend { + struct sio_hdl *sndHandle; + + ll_ringbuffer_t *ring; + + ATOMIC(int) killNow; + althrd_t thread; +}; + +static int SndioCapture_recordProc(void *ptr); + +static void SndioCapture_Construct(SndioCapture *self, ALCdevice *device); +static void SndioCapture_Destruct(SndioCapture *self); +static ALCenum SndioCapture_open(SndioCapture *self, const ALCchar *name); +static DECLARE_FORWARD(SndioCapture, ALCbackend, ALCboolean, reset) +static ALCboolean SndioCapture_start(SndioCapture *self); +static void SndioCapture_stop(SndioCapture *self); +static ALCenum SndioCapture_captureSamples(SndioCapture *self, void *buffer, ALCuint samples); +static ALCuint SndioCapture_availableSamples(SndioCapture *self); +static DECLARE_FORWARD(SndioCapture, ALCbackend, ClockLatency, getClockLatency) +static DECLARE_FORWARD(SndioCapture, ALCbackend, void, lock) +static DECLARE_FORWARD(SndioCapture, ALCbackend, void, unlock) +DECLARE_DEFAULT_ALLOCATORS(SndioCapture) + +DEFINE_ALCBACKEND_VTABLE(SndioCapture); + + +static void SndioCapture_Construct(SndioCapture *self, ALCdevice *device) +{ + new (self) SndioCapture{}; + ALCbackend_Construct(STATIC_CAST(ALCbackend, self), device); + SET_VTABLE2(SndioCapture, ALCbackend, self); + + self->sndHandle = nullptr; + self->ring = nullptr; + ATOMIC_INIT(&self->killNow, AL_TRUE); +} + +static void SndioCapture_Destruct(SndioCapture *self) +{ + if(self->sndHandle) + sio_close(self->sndHandle); + self->sndHandle = nullptr; + + ll_ringbuffer_free(self->ring); + self->ring = nullptr; + + ALCbackend_Destruct(STATIC_CAST(ALCbackend, self)); + self->~SndioCapture(); +} + + +static int SndioCapture_recordProc(void* ptr) +{ + SndioCapture *self = static_cast<SndioCapture*>(ptr); + ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice; + ALsizei frameSize; + + SetRTPriority(); + althrd_setname(althrd_current(), RECORD_THREAD_NAME); + + frameSize = FrameSizeFromDevFmt(device->FmtChans, device->FmtType, device->AmbiOrder); + + while(!ATOMIC_LOAD(&self->killNow, almemory_order_acquire) && + ATOMIC_LOAD(&device->Connected, almemory_order_acquire)) + { + ll_ringbuffer_data_t data[2]; + size_t total, todo; + + ll_ringbuffer_get_write_vector(self->ring, data); + todo = data[0].len + data[1].len; + if(todo == 0) + { + static char junk[4096]; + sio_read(self->sndHandle, junk, minz(sizeof(junk)/frameSize, device->UpdateSize)*frameSize); + continue; + } + + total = 0; + data[0].len *= frameSize; + data[1].len *= frameSize; + todo = minz(todo, device->UpdateSize) * frameSize; + while(total < todo) + { + size_t got; + + if(!data[0].len) + data[0] = data[1]; + + got = sio_read(self->sndHandle, data[0].buf, minz(todo-total, data[0].len)); + if(!got) + { + SndioCapture_lock(self); + aluHandleDisconnect(device, "Failed to read capture samples"); + SndioCapture_unlock(self); + break; + } + + data[0].buf += got; + data[0].len -= got; + total += got; + } + ll_ringbuffer_write_advance(self->ring, total / frameSize); + } + + return 0; +} + + +static ALCenum SndioCapture_open(SndioCapture *self, const ALCchar *name) +{ + ALCdevice *device = STATIC_CAST(ALCbackend,self)->mDevice; + struct sio_par par; + + if(!name) + name = sndio_device; + else if(strcmp(name, sndio_device) != 0) + return ALC_INVALID_VALUE; + + self->sndHandle = sio_open(nullptr, SIO_REC, 0); + if(self->sndHandle == nullptr) + { + ERR("Could not open device\n"); + return ALC_INVALID_VALUE; + } + + sio_initpar(&par); + + switch(device->FmtType) + { + case DevFmtByte: + par.bps = 1; + par.sig = 1; + break; + case DevFmtUByte: + par.bps = 1; + par.sig = 0; + break; + case DevFmtShort: + par.bps = 2; + par.sig = 1; + break; + case DevFmtUShort: + par.bps = 2; + par.sig = 0; + break; + case DevFmtInt: + par.bps = 4; + par.sig = 1; + break; + case DevFmtUInt: + par.bps = 4; + par.sig = 0; + break; + case DevFmtFloat: + ERR("%s capture samples not supported\n", DevFmtTypeString(device->FmtType)); + return ALC_INVALID_VALUE; + } + par.bits = par.bps * 8; + par.le = SIO_LE_NATIVE; + par.msb = SIO_LE_NATIVE ? 0 : 1; + par.rchan = ChannelsFromDevFmt(device->FmtChans, device->AmbiOrder); + par.rate = device->Frequency; + + par.appbufsz = maxu(device->UpdateSize*device->NumUpdates, (device->Frequency+9)/10); + par.round = clampu(par.appbufsz/device->NumUpdates, (device->Frequency+99)/100, + (device->Frequency+19)/20); + + device->UpdateSize = par.round; + device->NumUpdates = maxu(par.appbufsz/par.round, 1); + + if(!sio_setpar(self->sndHandle, &par) || !sio_getpar(self->sndHandle, &par)) + { + ERR("Failed to set device parameters\n"); + return ALC_INVALID_VALUE; + } + + if(par.bits != par.bps*8) + { + ERR("Padded samples not supported (%u of %u bits)\n", par.bits, par.bps*8); + return ALC_INVALID_VALUE; + } + + if(!((device->FmtType == DevFmtByte && par.bits == 8 && par.sig != 0) || + (device->FmtType == DevFmtUByte && par.bits == 8 && par.sig == 0) || + (device->FmtType == DevFmtShort && par.bits == 16 && par.sig != 0) || + (device->FmtType == DevFmtUShort && par.bits == 16 && par.sig == 0) || + (device->FmtType == DevFmtInt && par.bits == 32 && par.sig != 0) || + (device->FmtType == DevFmtUInt && par.bits == 32 && par.sig == 0)) || + ChannelsFromDevFmt(device->FmtChans, device->AmbiOrder) != (ALsizei)par.rchan || + device->Frequency != par.rate) + { + ERR("Failed to set format %s %s %uhz, got %c%u %u-channel %uhz instead\n", + DevFmtTypeString(device->FmtType), DevFmtChannelsString(device->FmtChans), + device->Frequency, par.sig?'s':'u', par.bits, par.rchan, par.rate); + return ALC_INVALID_VALUE; + } + + self->ring = ll_ringbuffer_create(device->UpdateSize*device->NumUpdates, par.bps*par.rchan, 0); + if(!self->ring) + { + ERR("Failed to allocate %u-byte ringbuffer\n", + device->UpdateSize*device->NumUpdates*par.bps*par.rchan); + return ALC_OUT_OF_MEMORY; + } + + SetDefaultChannelOrder(device); + + alstr_copy_cstr(&device->DeviceName, name); + + return ALC_NO_ERROR; +} + +static ALCboolean SndioCapture_start(SndioCapture *self) +{ + if(!sio_start(self->sndHandle)) + { + ERR("Error starting playback\n"); + return ALC_FALSE; + } + + ATOMIC_STORE(&self->killNow, AL_FALSE, almemory_order_release); + if(althrd_create(&self->thread, SndioCapture_recordProc, self) != althrd_success) + { + sio_stop(self->sndHandle); + return ALC_FALSE; + } + + return ALC_TRUE; +} + +static void SndioCapture_stop(SndioCapture *self) +{ + int res; + + if(ATOMIC_EXCHANGE(&self->killNow, AL_TRUE, almemory_order_acq_rel)) + return; + althrd_join(self->thread, &res); + + if(!sio_stop(self->sndHandle)) + ERR("Error stopping device\n"); +} + +static ALCenum SndioCapture_captureSamples(SndioCapture *self, void *buffer, ALCuint samples) +{ + ll_ringbuffer_read(self->ring, static_cast<char*>(buffer), samples); + return ALC_NO_ERROR; +} + +static ALCuint SndioCapture_availableSamples(SndioCapture *self) +{ + return ll_ringbuffer_read_space(self->ring); +} + + +struct SndioBackendFactory final : public ALCbackendFactory { + SndioBackendFactory() noexcept; +}; + +ALCbackendFactory *SndioBackendFactory_getFactory(void); + +static ALCboolean SndioBackendFactory_init(SndioBackendFactory *self); +static DECLARE_FORWARD(SndioBackendFactory, ALCbackendFactory, void, deinit) +static ALCboolean SndioBackendFactory_querySupport(SndioBackendFactory *self, ALCbackend_Type type); +static void SndioBackendFactory_probe(SndioBackendFactory *self, enum DevProbe type, al_string *outnames); +static ALCbackend* SndioBackendFactory_createBackend(SndioBackendFactory *self, ALCdevice *device, ALCbackend_Type type); +DEFINE_ALCBACKENDFACTORY_VTABLE(SndioBackendFactory); + +SndioBackendFactory::SndioBackendFactory() noexcept + : ALCbackendFactory{GET_VTABLE2(SndioBackendFactory, ALCbackendFactory)} +{ } + +ALCbackendFactory *SndioBackendFactory_getFactory(void) +{ + static SndioBackendFactory factory{}; + return STATIC_CAST(ALCbackendFactory, &factory); +} + +static ALCboolean SndioBackendFactory_init(SndioBackendFactory* UNUSED(self)) +{ + /* No dynamic loading */ + return ALC_TRUE; +} + +static ALCboolean SndioBackendFactory_querySupport(SndioBackendFactory* UNUSED(self), ALCbackend_Type type) +{ + if(type == ALCbackend_Playback || type == ALCbackend_Capture) + return ALC_TRUE; + return ALC_FALSE; +} + +static void SndioBackendFactory_probe(SndioBackendFactory* UNUSED(self), enum DevProbe type, al_string *outnames) +{ + switch(type) + { + case ALL_DEVICE_PROBE: + case CAPTURE_DEVICE_PROBE: + alstr_append_range(outnames, sndio_device, sndio_device+sizeof(sndio_device)); + break; + } +} + +static ALCbackend* SndioBackendFactory_createBackend(SndioBackendFactory* UNUSED(self), ALCdevice *device, ALCbackend_Type type) +{ + if(type == ALCbackend_Playback) + { + SndioPlayback *backend; + NEW_OBJ(backend, SndioPlayback)(device); + if(!backend) return nullptr; + return STATIC_CAST(ALCbackend, backend); + } + if(type == ALCbackend_Capture) + { + SndioCapture *backend; + NEW_OBJ(backend, SndioCapture)(device); + if(!backend) return nullptr; + return STATIC_CAST(ALCbackend, backend); + } + + return nullptr; +} |