Convert the SDL2 backend to C++

1 files changed, 0 insertions, 288 deletions

diff --git a/Alc/backends/sdl2.c b/Alc/backends/sdl2.c
deleted file mode 100644
index 3495e6bf..00000000
--- a/Alc/backends/sdl2.c
+++ /dev/null
@@ -1,288 +0,0 @@
-/**
- * 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 <stdlib.h>
-#include <SDL2/SDL.h>
-
-#include "alMain.h"
-#include "alu.h"
-#include "threads.h"
-#include "compat.h"
-
-#include "backends/base.h"
-
-
-#ifdef _WIN32
-#define DEVNAME_PREFIX "OpenAL Soft on "
-#else
-#define DEVNAME_PREFIX ""
-#endif
-
-typedef struct ALCsdl2Backend {
-    DERIVE_FROM_TYPE(ALCbackend);
-
-    SDL_AudioDeviceID deviceID;
-    ALsizei frameSize;
-
-    ALuint Frequency;
-    enum DevFmtChannels FmtChans;
-    enum DevFmtType     FmtType;
-    ALuint UpdateSize;
-} ALCsdl2Backend;
-
-static void ALCsdl2Backend_Construct(ALCsdl2Backend *self, ALCdevice *device);
-static void ALCsdl2Backend_Destruct(ALCsdl2Backend *self);
-static ALCenum ALCsdl2Backend_open(ALCsdl2Backend *self, const ALCchar *name);
-static ALCboolean ALCsdl2Backend_reset(ALCsdl2Backend *self);
-static ALCboolean ALCsdl2Backend_start(ALCsdl2Backend *self);
-static void ALCsdl2Backend_stop(ALCsdl2Backend *self);
-static DECLARE_FORWARD2(ALCsdl2Backend, ALCbackend, ALCenum, captureSamples, void*, ALCuint)
-static DECLARE_FORWARD(ALCsdl2Backend, ALCbackend, ALCuint, availableSamples)
-static DECLARE_FORWARD(ALCsdl2Backend, ALCbackend, ClockLatency, getClockLatency)
-static void ALCsdl2Backend_lock(ALCsdl2Backend *self);
-static void ALCsdl2Backend_unlock(ALCsdl2Backend *self);
-DECLARE_DEFAULT_ALLOCATORS(ALCsdl2Backend)
-
-DEFINE_ALCBACKEND_VTABLE(ALCsdl2Backend);
-
-static const ALCchar defaultDeviceName[] = DEVNAME_PREFIX "Default Device";
-
-static void ALCsdl2Backend_Construct(ALCsdl2Backend *self, ALCdevice *device)
-{
-    ALCbackend_Construct(STATIC_CAST(ALCbackend, self), device);
-    SET_VTABLE2(ALCsdl2Backend, ALCbackend, self);
-
-    self->deviceID = 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 ALCsdl2Backend_Destruct(ALCsdl2Backend *self)
-{
-    if(self->deviceID)
-        SDL_CloseAudioDevice(self->deviceID);
-    self->deviceID = 0;
-
-    ALCbackend_Destruct(STATIC_CAST(ALCbackend, self));
-}
-
-
-static void ALCsdl2Backend_audioCallback(void *ptr, Uint8 *stream, int len)
-{
-    ALCsdl2Backend *self = (ALCsdl2Backend*)ptr;
-    ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
-
-    assert((len % self->frameSize) == 0);
-    aluMixData(device, stream, len / self->frameSize);
-}
-
-static ALCenum ALCsdl2Backend_open(ALCsdl2Backend *self, const ALCchar *name)
-{
-    ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
-    SDL_AudioSpec want, have;
-
-    SDL_zero(want);
-    SDL_zero(have);
-
-    want.freq = device->Frequency;
-    switch(device->FmtType)
-    {
-        case DevFmtUByte: want.format = AUDIO_U8; break;
-        case DevFmtByte: want.format = AUDIO_S8; break;
-        case DevFmtUShort: want.format = AUDIO_U16SYS; break;
-        case DevFmtShort: want.format = AUDIO_S16SYS; break;
-        case DevFmtUInt: /* fall-through */
-        case DevFmtInt: want.format = AUDIO_S32SYS; break;
-        case DevFmtFloat: want.format = AUDIO_F32; break;
-    }
-    want.channels = (device->FmtChans == DevFmtMono) ? 1 : 2;
-    want.samples = device->UpdateSize;
-    want.callback = ALCsdl2Backend_audioCallback;
-    want.userdata = self;
-
-    /* Passing NULL to SDL_OpenAudioDevice opens a default, which isn't
-     * necessarily the first in the list.
-     */
-    if(!name || strcmp(name, defaultDeviceName) == 0)
-        self->deviceID = SDL_OpenAudioDevice(NULL, SDL_FALSE, &want, &have,
-                                             SDL_AUDIO_ALLOW_ANY_CHANGE);
-    else
-    {
-        const size_t prefix_len = strlen(DEVNAME_PREFIX);
-        if(strncmp(name, DEVNAME_PREFIX, prefix_len) == 0)
-            self->deviceID = SDL_OpenAudioDevice(name+prefix_len, SDL_FALSE, &want, &have,
-                                                 SDL_AUDIO_ALLOW_ANY_CHANGE);
-        else
-            self->deviceID = SDL_OpenAudioDevice(name, SDL_FALSE, &want, &have,
-                                                 SDL_AUDIO_ALLOW_ANY_CHANGE);
-    }
-    if(self->deviceID == 0)
-        return ALC_INVALID_VALUE;
-
-    device->Frequency = have.freq;
-    if(have.channels == 1)
-        device->FmtChans = DevFmtMono;
-    else if(have.channels == 2)
-        device->FmtChans = DevFmtStereo;
-    else
-    {
-        ERR("Got unhandled SDL channel count: %d\n", (int)have.channels);
-        return ALC_INVALID_VALUE;
-    }
-    switch(have.format)
-    {
-        case AUDIO_U8:     device->FmtType = DevFmtUByte;  break;
-        case AUDIO_S8:     device->FmtType = DevFmtByte;   break;
-        case AUDIO_U16SYS: device->FmtType = DevFmtUShort; break;
-        case AUDIO_S16SYS: device->FmtType = DevFmtShort;  break;
-        case AUDIO_S32SYS: device->FmtType = DevFmtInt;    break;
-        case AUDIO_F32SYS: device->FmtType = DevFmtFloat;  break;
-        default:
-            ERR("Got unsupported SDL format: 0x%04x\n", have.format);
-            return ALC_INVALID_VALUE;
-    }
-    device->UpdateSize = have.samples;
-    device->NumUpdates = 2; /* SDL always (tries to) use two periods. */
-
-    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;
-
-    alstr_copy_cstr(&device->DeviceName, name ? name : defaultDeviceName);
-
-    return ALC_NO_ERROR;
-}
-
-static ALCboolean ALCsdl2Backend_reset(ALCsdl2Backend *self)
-{
-    ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
-    device->Frequency = self->Frequency;
-    device->FmtChans = self->FmtChans;
-    device->FmtType = self->FmtType;
-    device->UpdateSize = self->UpdateSize;
-    device->NumUpdates = 2;
-    SetDefaultWFXChannelOrder(device);
-    return ALC_TRUE;
-}
-
-static ALCboolean ALCsdl2Backend_start(ALCsdl2Backend *self)
-{
-    SDL_PauseAudioDevice(self->deviceID, 0);
-    return ALC_TRUE;
-}
-
-static void ALCsdl2Backend_stop(ALCsdl2Backend *self)
-{
-    SDL_PauseAudioDevice(self->deviceID, 1);
-}
-
-static void ALCsdl2Backend_lock(ALCsdl2Backend *self)
-{
-    SDL_LockAudioDevice(self->deviceID);
-}
-
-static void ALCsdl2Backend_unlock(ALCsdl2Backend *self)
-{
-    SDL_UnlockAudioDevice(self->deviceID);
-}
-
-
-typedef struct ALCsdl2BackendFactory {
-    DERIVE_FROM_TYPE(ALCbackendFactory);
-} ALCsdl2BackendFactory;
-#define ALCsdl2BACKENDFACTORY_INITIALIZER { { GET_VTABLE2(ALCsdl2BackendFactory, ALCbackendFactory) } }
-
-ALCbackendFactory *ALCsdl2BackendFactory_getFactory(void);
-
-static ALCboolean ALCsdl2BackendFactory_init(ALCsdl2BackendFactory *self);
-static void ALCsdl2BackendFactory_deinit(ALCsdl2BackendFactory *self);
-static ALCboolean ALCsdl2BackendFactory_querySupport(ALCsdl2BackendFactory *self, ALCbackend_Type type);
-static void ALCsdl2BackendFactory_probe(ALCsdl2BackendFactory *self, enum DevProbe type, al_string *outnames);
-static ALCbackend* ALCsdl2BackendFactory_createBackend(ALCsdl2BackendFactory *self, ALCdevice *device, ALCbackend_Type type);
-DEFINE_ALCBACKENDFACTORY_VTABLE(ALCsdl2BackendFactory);
-
-
-ALCbackendFactory *ALCsdl2BackendFactory_getFactory(void)
-{
-    static ALCsdl2BackendFactory factory = ALCsdl2BACKENDFACTORY_INITIALIZER;
-    return STATIC_CAST(ALCbackendFactory, &factory);
-}
-
-
-static ALCboolean ALCsdl2BackendFactory_init(ALCsdl2BackendFactory* UNUSED(self))
-{
-    if(SDL_InitSubSystem(SDL_INIT_AUDIO) == 0)
-        return AL_TRUE;
-    return ALC_FALSE;
-}
-
-static void ALCsdl2BackendFactory_deinit(ALCsdl2BackendFactory* UNUSED(self))
-{
-    SDL_QuitSubSystem(SDL_INIT_AUDIO);
-}
-
-static ALCboolean ALCsdl2BackendFactory_querySupport(ALCsdl2BackendFactory* UNUSED(self), ALCbackend_Type type)
-{
-    if(type == ALCbackend_Playback)
-        return ALC_TRUE;
-    return ALC_FALSE;
-}
-
-static void ALCsdl2BackendFactory_probe(ALCsdl2BackendFactory* UNUSED(self), enum DevProbe type, al_string *outnames)
-{
-    int num_devices, i;
-    al_string name;
-
-    if(type != ALL_DEVICE_PROBE)
-        return;
-
-    AL_STRING_INIT(name);
-    num_devices = SDL_GetNumAudioDevices(SDL_FALSE);
-
-    alstr_append_range(outnames, defaultDeviceName, defaultDeviceName+sizeof(defaultDeviceName));
-    for(i = 0;i < num_devices;++i)
-    {
-        alstr_copy_cstr(&name, DEVNAME_PREFIX);
-        alstr_append_cstr(&name, SDL_GetAudioDeviceName(i, SDL_FALSE));
-        if(!alstr_empty(name))
-            alstr_append_range(outnames, VECTOR_BEGIN(name), VECTOR_END(name)+1);
-    }
-    alstr_reset(&name);
-}
-
-static ALCbackend* ALCsdl2BackendFactory_createBackend(ALCsdl2BackendFactory* UNUSED(self), ALCdevice *device, ALCbackend_Type type)
-{
-    if(type == ALCbackend_Playback)
-    {
-        ALCsdl2Backend *backend;
-        NEW_OBJ(backend, ALCsdl2Backend)(device);
-        if(!backend) return NULL;
-        return STATIC_CAST(ALCbackend, backend);
-    }
-
-    return NULL;
-}