Add vita playback/capture backends, courtesy of @dwhinham with some fixes

Alc/ALc.c

@@ -105,6 +105,9 @@ static struct BackendInfo BackendList[] = {
 #ifdef HAVE_SDL2
     { "sdl2", ALCsdl2BackendFactory_getFactory },
 #endif
+#ifdef HAVE_VITA
+    { "vita", ALCvitaBackendFactory_getFactory },
+#endif
 
     { "null", ALCnullBackendFactory_getFactory },
 #ifdef HAVE_WAVE

Alc/backends/base.h

@@ -150,6 +150,7 @@ ALCbackendFactory *ALCdsoundBackendFactory_getFactory(void);
 ALCbackendFactory *ALCwinmmBackendFactory_getFactory(void);
 ALCbackendFactory *ALCportBackendFactory_getFactory(void);
 ALCbackendFactory *ALCopenslBackendFactory_getFactory(void);
+ALCbackendFactory *ALCvitaBackendFactory_getFactory(void);
 ALCbackendFactory *ALCnullBackendFactory_getFactory(void);
 ALCbackendFactory *ALCwaveBackendFactory_getFactory(void);
 ALCbackendFactory *ALCsdl2BackendFactory_getFactory(void);

Alc/backends/vita.c

@@ -0,0 +1,411 @@
+/**
+ * OpenAL cross platform audio library
+ * Copyright (C) 2018 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 <psp2/audioin.h>
+#include <psp2/audioout.h>
+#include <stdlib.h>
+
+#include "alMain.h"
+#include "alu.h"
+#include "ringbuffer.h"
+#include "threads.h"
+
+#include "backends/base.h"
+
+static const ALCchar playbackDeviceName[] = "PS Vita Speakers/Headphones";
+static const ALCchar captureDeviceName[] = "PS Vita Microphone";
+
+// -----------------------------------------------------------------------------
+// Playback
+// -----------------------------------------------------------------------------
+typedef struct ALCvitaPlayback
+{
+    DERIVE_FROM_TYPE(ALCbackend);
+
+    ATOMIC(int) killNow;
+    althrd_t thread;
+
+    int portNumber;
+    ALsizei frameSize;
+    void* waveBuffer;
+
+    ALuint Frequency;
+    enum DevFmtChannels FmtChans;
+    enum DevFmtType     FmtType;
+    ALuint UpdateSize;
+} ALCvitaPlayback;
+
+static void ALCvitaPlayback_Construct(ALCvitaPlayback *self, ALCdevice *device);
+static void ALCvitaPlayback_Destruct(ALCvitaPlayback *self);
+static ALCenum ALCvitaPlayback_open(ALCvitaPlayback *self, const ALCchar *name);
+static ALCboolean ALCvitaPlayback_reset(ALCvitaPlayback *self);
+static ALCboolean ALCvitaPlayback_start(ALCvitaPlayback *self);
+static void ALCvitaPlayback_stop(ALCvitaPlayback *self);
+static DECLARE_FORWARD2(ALCvitaPlayback, ALCbackend, ALCenum, captureSamples, void*, ALCuint)
+static DECLARE_FORWARD(ALCvitaPlayback, ALCbackend, ALCuint, availableSamples)
+static DECLARE_FORWARD(ALCvitaPlayback, ALCbackend, ClockLatency, getClockLatency)
+static DECLARE_FORWARD(ALCvitaPlayback, ALCbackend, void, lock)
+static DECLARE_FORWARD(ALCvitaPlayback, ALCbackend, void, unlock)
+DECLARE_DEFAULT_ALLOCATORS(ALCvitaPlayback)
+
+DEFINE_ALCBACKEND_VTABLE(ALCvitaPlayback);
+
+static void ALCvitaPlayback_Construct(ALCvitaPlayback *self, ALCdevice *device)
+{
+    ALCbackend_Construct(STATIC_CAST(ALCbackend, self), device);
+    SET_VTABLE2(ALCvitaPlayback, ALCbackend, self);
+
+    self->portNumber = 0;
+    self->frameSize = FrameSizeFromDevFmt(device->FmtChans, device->FmtType, device->AmbiOrder);
+    self->Frequency = device->Frequency;
+    self->FmtChans = device->FmtChans;
+    self->FmtType = device->FmtType;
+    self->UpdateSize = device->UpdateSize;
+}
+
+static void ALCvitaPlayback_Destruct(ALCvitaPlayback *self)
+{
+    if (self->portNumber)
+    {
+        sceAudioOutReleasePort(self->portNumber);
+        self->portNumber = 0;
+    }
+
+    if (self->waveBuffer)
+    {
+        free(self->waveBuffer);
+        self->waveBuffer = NULL;
+    }
+
+    ALCbackend_Destruct(STATIC_CAST(ALCbackend, self));
+}
+
+static int ALCvitaPlayback_MixerProc(void *ptr)
+{
+    ALCvitaPlayback *self = (ALCvitaPlayback*)ptr;
+    ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
+
+    while (!ATOMIC_LOAD(&self->killNow, almemory_order_acquire))
+    {
+        ALCvitaPlayback_lock(self);
+        aluMixData(device, self->waveBuffer, device->UpdateSize);
+        ALCvitaPlayback_unlock(self);
+        sceAudioOutOutput(self->portNumber, self->waveBuffer);
+    }
+
+    return 0;
+}
+
+static ALCenum ALCvitaPlayback_open(ALCvitaPlayback *self, const ALCchar *name)
+{
+    ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
+
+    /* Only signed short output sample format is supported */
+    device->FmtType = DevFmtShort;
+
+    /* Only mono/stereo channel configurations are supported */
+    if (device->FmtChans != DevFmtMono && device->FmtChans != DevFmtStereo)
+        device->FmtChans = DevFmtStereo;
+
+    /* TODO: Validate samplerate and update size */
+
+    self->portNumber = sceAudioOutOpenPort(
+        SCE_AUDIO_OUT_PORT_TYPE_BGM,
+        device->UpdateSize,
+        device->Frequency,
+        device->FmtChans == DevFmtStereo ? SCE_AUDIO_OUT_MODE_STEREO : SCE_AUDIO_OUT_MODE_MONO
+    );
+
+    if (self->portNumber < 0)
+        return ALC_INVALID_VALUE;
+
+    self->frameSize = FrameSizeFromDevFmt(device->FmtChans, device->FmtType, device->AmbiOrder);
+    self->Frequency = device->Frequency;
+    self->FmtChans = device->FmtChans;
+    self->FmtType = device->FmtType;
+    self->UpdateSize = device->UpdateSize;
+
+    self->waveBuffer = calloc(device->UpdateSize * self->frameSize, 1);
+
+    alstr_copy_cstr(&device->DeviceName, name ? name : playbackDeviceName);
+
+    return ALC_NO_ERROR;
+}
+
+static ALCboolean ALCvitaPlayback_reset(ALCvitaPlayback *self)
+{
+    ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
+    SetDefaultWFXChannelOrder(device);
+    return ALC_TRUE;
+}
+
+static ALCboolean ALCvitaPlayback_start(ALCvitaPlayback *self)
+{
+    ATOMIC_STORE(&self->killNow, AL_FALSE, almemory_order_release);
+    if (althrd_create(&self->thread, ALCvitaPlayback_MixerProc, self) != althrd_success)
+        return ALC_FALSE;
+
+    return ALC_TRUE;
+}
+
+static void ALCvitaPlayback_stop(ALCvitaPlayback *self)
+{
+    int res;
+
+    if (ATOMIC_EXCHANGE(&self->killNow, AL_TRUE, almemory_order_acq_rel))
+        return;
+
+    althrd_join(self->thread, &res);
+}
+
+// -----------------------------------------------------------------------------
+// Capture
+// -----------------------------------------------------------------------------
+typedef struct ALCvitaCapture
+{
+    DERIVE_FROM_TYPE(ALCbackend);
+
+    ATOMIC(int) killNow;
+    althrd_t thread;
+
+    int portNumber;
+    ALsizei frameSize;
+    ll_ringbuffer_t *ring;
+
+    ALuint Frequency;
+    enum DevFmtChannels FmtChans;
+    enum DevFmtType     FmtType;
+    ALuint UpdateSize;
+} ALCvitaCapture;
+
+static void ALCvitaCapture_Construct(ALCvitaCapture *self, ALCdevice *device);
+static void ALCvitaCapture_Destruct(ALCvitaCapture *self);
+static ALCenum ALCvitaCapture_open(ALCvitaCapture *self, const ALCchar *name);
+static ALCboolean ALCvitaCapture_reset(ALCvitaCapture *self);
+static ALCboolean ALCvitaCapture_start(ALCvitaCapture *self);
+static void ALCvitaCapture_stop(ALCvitaCapture *self);
+static ALCenum ALCvitaCapture_captureSamples(ALCvitaCapture *self, ALCvoid *buffer, ALCuint samples);
+static ALCuint ALCvitaCapture_availableSamples(ALCvitaCapture *self);
+static DECLARE_FORWARD(ALCvitaCapture, ALCbackend, ClockLatency, getClockLatency)
+static DECLARE_FORWARD(ALCvitaCapture, ALCbackend, void, lock)
+static DECLARE_FORWARD(ALCvitaCapture, ALCbackend, void, unlock)
+DECLARE_DEFAULT_ALLOCATORS(ALCvitaCapture)
+
+DEFINE_ALCBACKEND_VTABLE(ALCvitaCapture);
+
+static void ALCvitaCapture_Construct(ALCvitaCapture *self, ALCdevice *device)
+{
+    ALCbackend_Construct(STATIC_CAST(ALCbackend, self), device);
+    SET_VTABLE2(ALCvitaCapture, ALCbackend, self);
+
+    self->portNumber = 0;
+    self->frameSize = FrameSizeFromDevFmt(device->FmtChans, device->FmtType, device->AmbiOrder);
+    self->Frequency = device->Frequency;
+    self->FmtChans = device->FmtChans;
+    self->FmtType = device->FmtType;
+    self->UpdateSize = device->UpdateSize;
+}
+
+static void ALCvitaCapture_Destruct(ALCvitaCapture *self)
+{
+    if (self->portNumber)
+    {
+        sceAudioOutReleasePort(self->portNumber);
+        self->portNumber = 0;
+    }
+
+    if (self->ring)
+    {
+        ll_ringbuffer_free(self->ring);
+        self->ring = NULL;
+    }
+
+    ALCbackend_Destruct(STATIC_CAST(ALCbackend, self));
+}
+
+static int ALCvitaCapture_MixerProc(void *ptr)
+{
+    ALCvitaCapture *self = (ALCvitaCapture*)ptr;
+    ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
+
+    void* buf = malloc(self->frameSize * device->UpdateSize);
+
+    while (!ATOMIC_LOAD(&self->killNow, almemory_order_acquire))
+    {
+        sceAudioInInput(self->portNumber, buf);
+        ll_ringbuffer_write(self->ring, buf, self->frameSize * device->UpdateSize);
+    }
+
+    free(buf);
+
+    return 0;
+}
+
+static ALCenum ALCvitaCapture_open(ALCvitaCapture *self, const ALCchar *name)
+{
+    ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
+
+    /* Only signed short output sample format is supported */
+    device->FmtType = DevFmtShort;
+
+    /* Only mono channel configuration is supported */
+    if (device->FmtChans != DevFmtMono)
+        device->FmtChans = DevFmtMono;
+
+    /* TODO: Validate samplerate and update size */
+
+    self->portNumber = sceAudioInOpenPort(
+        SCE_AUDIO_IN_PORT_TYPE_RAW,
+        device->UpdateSize,
+        device->Frequency,
+        SCE_AUDIO_IN_PARAM_FORMAT_S16_MONO
+    );
+
+    if (self->portNumber < 0)
+    {
+        return ALC_INVALID_VALUE;
+    }
+
+    self->frameSize = FrameSizeFromDevFmt(device->FmtChans, device->FmtType, device->AmbiOrder);
+    self->Frequency = device->Frequency;
+    self->FmtChans = device->FmtChans;
+    self->FmtType = device->FmtType;
+    self->UpdateSize = device->UpdateSize;
+
+    self->ring = ll_ringbuffer_create(device->UpdateSize * device->NumUpdates, self->frameSize, false);
+    if (self->ring == NULL)
+        return ALC_INVALID_VALUE;
+
+    alstr_copy_cstr(&device->DeviceName, name ? name : captureDeviceName);
+
+    return ALC_NO_ERROR;
+}
+
+static ALCboolean ALCvitaCapture_reset(ALCvitaCapture *self)
+{
+    ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
+    SetDefaultWFXChannelOrder(device);
+    return ALC_TRUE;
+}
+
+static ALCboolean ALCvitaCapture_start(ALCvitaCapture *self)
+{
+    ATOMIC_STORE(&self->killNow, AL_FALSE, almemory_order_release);
+    if (althrd_create(&self->thread, ALCvitaCapture_MixerProc, self) != althrd_success)
+        return ALC_FALSE;
+
+    return ALC_TRUE;
+}
+
+static void ALCvitaCapture_stop(ALCvitaCapture *self)
+{
+    int res;
+
+    if (ATOMIC_EXCHANGE(&self->killNow, AL_TRUE, almemory_order_acq_rel))
+        return;
+
+    althrd_join(self->thread, &res);
+}
+
+static ALCuint ALCvitaCapture_availableSamples(ALCvitaCapture *self)
+{
+    return ll_ringbuffer_read_space(self->ring);
+}
+
+static ALCenum ALCvitaCapture_captureSamples(ALCvitaCapture *self, ALCvoid *buffer, ALCuint samples)
+{
+    ll_ringbuffer_read(self->ring, buffer, samples);
+    return ALC_NO_ERROR;
+}
+
+typedef struct ALCvitaBackendFactory {
+    DERIVE_FROM_TYPE(ALCbackendFactory);
+} ALCvitaBackendFactory;
+#define ALCvitaBACKENDFACTORY_INITIALIZER { { GET_VTABLE2(ALCvitaBackendFactory, ALCbackendFactory) } }
+
+ALCbackendFactory *ALCvitaBackendFactory_getFactory(void);
+
+static ALCboolean ALCvitaBackendFactory_init(ALCvitaBackendFactory *self);
+static void ALCvitaBackendFactory_deinit(ALCvitaBackendFactory *self);
+static ALCboolean ALCvitaBackendFactory_querySupport(ALCvitaBackendFactory *self, ALCbackend_Type type);
+static void ALCvitaBackendFactory_probe(ALCvitaBackendFactory *self, enum DevProbe type, al_string *outnames);
+static ALCbackend* ALCvitaBackendFactory_createBackend(ALCvitaBackendFactory *self, ALCdevice *device, ALCbackend_Type type);
+
+DEFINE_ALCBACKENDFACTORY_VTABLE(ALCvitaBackendFactory);
+
+ALCbackendFactory *ALCvitaBackendFactory_getFactory(void)
+{
+    static ALCvitaBackendFactory factory = ALCvitaBACKENDFACTORY_INITIALIZER;
+    return STATIC_CAST(ALCbackendFactory, &factory);
+}
+
+
+static ALCboolean ALCvitaBackendFactory_init(ALCvitaBackendFactory* UNUSED(self))
+{
+    return AL_TRUE;
+}
+
+static void ALCvitaBackendFactory_deinit(ALCvitaBackendFactory* UNUSED(self))
+{
+}
+
+static ALCboolean ALCvitaBackendFactory_querySupport(ALCvitaBackendFactory* UNUSED(self), ALCbackend_Type type)
+{
+    if (type == ALCbackend_Playback || type == ALCbackend_Capture)
+        return ALC_TRUE;
+
+    return ALC_FALSE;
+}
+
+static void ALCvitaBackendFactory_probe(ALCvitaBackendFactory* UNUSED(self), enum DevProbe type, al_string *outnames)
+{
+    if (type == ALL_DEVICE_PROBE)
+        alstr_append_range(outnames, playbackDeviceName, playbackDeviceName+sizeof(playbackDeviceName));
+    else if (type == CAPTURE_DEVICE_PROBE)
+        alstr_append_range(outnames, captureDeviceName, playbackDeviceName+sizeof(captureDeviceName));
+}
+
+static ALCbackend* ALCvitaBackendFactory_createBackend(ALCvitaBackendFactory* UNUSED(self), ALCdevice *device, ALCbackend_Type type)
+{
+    if (type == ALCbackend_Playback)
+    {
+        ALCvitaPlayback *backend;
+        NEW_OBJ(backend, ALCvitaPlayback)(device);
+
+        if (!backend)
+            return NULL;
+
+        return STATIC_CAST(ALCbackend, backend);
+    }
+
+    if (type == ALCbackend_Capture)
+    {
+        ALCvitaCapture *backend;
+        NEW_OBJ(backend, ALCvitaCapture)(device);
+
+        if (!backend)
+            return NULL;
+
+        return STATIC_CAST(ALCbackend, backend);
+    }
+    return NULL;
+}

config.h.in

@@ -83,6 +83,9 @@
 /* Define if we have the SDL2 backend */
 #cmakedefine HAVE_SDL2
 
+/* Define if we have the PS Vita backend */
+#cmakedefine HAVE_VITA
+
 /* Define if we have the stat function */
 #cmakedefine HAVE_STAT