-/**

- * OpenAL cross platform audio library

- * Copyright (C) 2009 by Konstantinos Natsakis <konstantinos.natsakis@gmail.com>

- * Copyright (C) 2010 by Chris Robinson <chris.kcat@gmail.com>

- * 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 <string.h>

-

-#include "alMain.h"

-#include "alu.h"

-#include "alconfig.h"

-#include "threads.h"

-#include "compat.h"

-

-#include "backends/base.h"

-

-#include <pulse/pulseaudio.h>

-

-#if PA_API_VERSION == 12

-

-#ifdef HAVE_DYNLOAD

-static void *pa_handle;

-#define MAKE_FUNC(x) static __typeof(x) * p##x

-MAKE_FUNC(pa_context_unref);

-MAKE_FUNC(pa_sample_spec_valid);

-MAKE_FUNC(pa_frame_size);

-MAKE_FUNC(pa_stream_drop);

-MAKE_FUNC(pa_strerror);

-MAKE_FUNC(pa_context_get_state);

-MAKE_FUNC(pa_stream_get_state);

-MAKE_FUNC(pa_threaded_mainloop_signal);

-MAKE_FUNC(pa_stream_peek);

-MAKE_FUNC(pa_threaded_mainloop_wait);

-MAKE_FUNC(pa_threaded_mainloop_unlock);

-MAKE_FUNC(pa_threaded_mainloop_in_thread);

-MAKE_FUNC(pa_context_new);

-MAKE_FUNC(pa_threaded_mainloop_stop);

-MAKE_FUNC(pa_context_disconnect);

-MAKE_FUNC(pa_threaded_mainloop_start);

-MAKE_FUNC(pa_threaded_mainloop_get_api);

-MAKE_FUNC(pa_context_set_state_callback);

-MAKE_FUNC(pa_stream_write);

-MAKE_FUNC(pa_xfree);

-MAKE_FUNC(pa_stream_connect_record);

-MAKE_FUNC(pa_stream_connect_playback);

-MAKE_FUNC(pa_stream_readable_size);

-MAKE_FUNC(pa_stream_writable_size);

-MAKE_FUNC(pa_stream_is_corked);

-MAKE_FUNC(pa_stream_cork);

-MAKE_FUNC(pa_stream_is_suspended);

-MAKE_FUNC(pa_stream_get_device_name);

-MAKE_FUNC(pa_stream_get_latency);

-MAKE_FUNC(pa_path_get_filename);

-MAKE_FUNC(pa_get_binary_name);

-MAKE_FUNC(pa_threaded_mainloop_free);

-MAKE_FUNC(pa_context_errno);

-MAKE_FUNC(pa_xmalloc);

-MAKE_FUNC(pa_stream_unref);

-MAKE_FUNC(pa_threaded_mainloop_accept);

-MAKE_FUNC(pa_stream_set_write_callback);

-MAKE_FUNC(pa_threaded_mainloop_new);

-MAKE_FUNC(pa_context_connect);

-MAKE_FUNC(pa_stream_set_buffer_attr);

-MAKE_FUNC(pa_stream_get_buffer_attr);

-MAKE_FUNC(pa_stream_get_sample_spec);

-MAKE_FUNC(pa_stream_get_time);

-MAKE_FUNC(pa_stream_set_read_callback);

-MAKE_FUNC(pa_stream_set_state_callback);

-MAKE_FUNC(pa_stream_set_moved_callback);

-MAKE_FUNC(pa_stream_set_underflow_callback);

-MAKE_FUNC(pa_stream_new_with_proplist);

-MAKE_FUNC(pa_stream_disconnect);

-MAKE_FUNC(pa_threaded_mainloop_lock);

-MAKE_FUNC(pa_channel_map_init_auto);

-MAKE_FUNC(pa_channel_map_parse);

-MAKE_FUNC(pa_channel_map_snprint);

-MAKE_FUNC(pa_channel_map_equal);

-MAKE_FUNC(pa_context_get_server_info);

-MAKE_FUNC(pa_context_get_sink_info_by_name);

-MAKE_FUNC(pa_context_get_sink_info_list);

-MAKE_FUNC(pa_context_get_source_info_by_name);

-MAKE_FUNC(pa_context_get_source_info_list);

-MAKE_FUNC(pa_operation_get_state);

-MAKE_FUNC(pa_operation_unref);

-MAKE_FUNC(pa_proplist_new);

-MAKE_FUNC(pa_proplist_free);

-MAKE_FUNC(pa_proplist_set);

-MAKE_FUNC(pa_channel_map_superset);

-MAKE_FUNC(pa_stream_set_buffer_attr_callback);

-MAKE_FUNC(pa_stream_begin_write);

-#undef MAKE_FUNC

-

-#define pa_context_unref ppa_context_unref

-#define pa_sample_spec_valid ppa_sample_spec_valid

-#define pa_frame_size ppa_frame_size

-#define pa_stream_drop ppa_stream_drop

-#define pa_strerror ppa_strerror

-#define pa_context_get_state ppa_context_get_state

-#define pa_stream_get_state ppa_stream_get_state

-#define pa_threaded_mainloop_signal ppa_threaded_mainloop_signal

-#define pa_stream_peek ppa_stream_peek

-#define pa_threaded_mainloop_wait ppa_threaded_mainloop_wait

-#define pa_threaded_mainloop_unlock ppa_threaded_mainloop_unlock

-#define pa_threaded_mainloop_in_thread ppa_threaded_mainloop_in_thread

-#define pa_context_new ppa_context_new

-#define pa_threaded_mainloop_stop ppa_threaded_mainloop_stop

-#define pa_context_disconnect ppa_context_disconnect

-#define pa_threaded_mainloop_start ppa_threaded_mainloop_start

-#define pa_threaded_mainloop_get_api ppa_threaded_mainloop_get_api

-#define pa_context_set_state_callback ppa_context_set_state_callback

-#define pa_stream_write ppa_stream_write

-#define pa_xfree ppa_xfree

-#define pa_stream_connect_record ppa_stream_connect_record

-#define pa_stream_connect_playback ppa_stream_connect_playback

-#define pa_stream_readable_size ppa_stream_readable_size

-#define pa_stream_writable_size ppa_stream_writable_size

-#define pa_stream_is_corked ppa_stream_is_corked

-#define pa_stream_cork ppa_stream_cork

-#define pa_stream_is_suspended ppa_stream_is_suspended

-#define pa_stream_get_device_name ppa_stream_get_device_name

-#define pa_stream_get_latency ppa_stream_get_latency

-#define pa_path_get_filename ppa_path_get_filename

-#define pa_get_binary_name ppa_get_binary_name

-#define pa_threaded_mainloop_free ppa_threaded_mainloop_free

-#define pa_context_errno ppa_context_errno

-#define pa_xmalloc ppa_xmalloc

-#define pa_stream_unref ppa_stream_unref

-#define pa_threaded_mainloop_accept ppa_threaded_mainloop_accept

-#define pa_stream_set_write_callback ppa_stream_set_write_callback

-#define pa_threaded_mainloop_new ppa_threaded_mainloop_new

-#define pa_context_connect ppa_context_connect

-#define pa_stream_set_buffer_attr ppa_stream_set_buffer_attr

-#define pa_stream_get_buffer_attr ppa_stream_get_buffer_attr

-#define pa_stream_get_sample_spec ppa_stream_get_sample_spec

-#define pa_stream_get_time ppa_stream_get_time

-#define pa_stream_set_read_callback ppa_stream_set_read_callback

-#define pa_stream_set_state_callback ppa_stream_set_state_callback

-#define pa_stream_set_moved_callback ppa_stream_set_moved_callback

-#define pa_stream_set_underflow_callback ppa_stream_set_underflow_callback

-#define pa_stream_new_with_proplist ppa_stream_new_with_proplist

-#define pa_stream_disconnect ppa_stream_disconnect

-#define pa_threaded_mainloop_lock ppa_threaded_mainloop_lock

-#define pa_channel_map_init_auto ppa_channel_map_init_auto

-#define pa_channel_map_parse ppa_channel_map_parse

-#define pa_channel_map_snprint ppa_channel_map_snprint

-#define pa_channel_map_equal ppa_channel_map_equal

-#define pa_context_get_server_info ppa_context_get_server_info

-#define pa_context_get_sink_info_by_name ppa_context_get_sink_info_by_name

-#define pa_context_get_sink_info_list ppa_context_get_sink_info_list

-#define pa_context_get_source_info_by_name ppa_context_get_source_info_by_name

-#define pa_context_get_source_info_list ppa_context_get_source_info_list

-#define pa_operation_get_state ppa_operation_get_state

-#define pa_operation_unref ppa_operation_unref

-#define pa_proplist_new ppa_proplist_new

-#define pa_proplist_free ppa_proplist_free

-#define pa_proplist_set ppa_proplist_set

-#define pa_channel_map_superset ppa_channel_map_superset

-#define pa_stream_set_buffer_attr_callback ppa_stream_set_buffer_attr_callback

-#define pa_stream_begin_write ppa_stream_begin_write

-

-#endif

-

-static ALCboolean pulse_load(void)

-{

- ALCboolean ret = ALC_TRUE;

-#ifdef HAVE_DYNLOAD

- if(!pa_handle)

- {

- al_string missing_funcs = AL_STRING_INIT_STATIC();

-

-#ifdef _WIN32

-#define PALIB "libpulse-0.dll"

-#elif defined(__APPLE__) && defined(__MACH__)

-#define PALIB "libpulse.0.dylib"

-#else

-#define PALIB "libpulse.so.0"

-#endif

- pa_handle = LoadLib(PALIB);

- if(!pa_handle)

- {

- WARN("Failed to load %s\n", PALIB);

- return ALC_FALSE;

- }

-

-#define LOAD_FUNC(x) do { \

- p##x = GetSymbol(pa_handle, #x); \

- if(!(p##x)) { \

- ret = ALC_FALSE; \

- alstr_append_cstr(&missing_funcs, "\n" #x); \

- } \

-} while(0)

- LOAD_FUNC(pa_context_unref);

- LOAD_FUNC(pa_sample_spec_valid);

- LOAD_FUNC(pa_stream_drop);

- LOAD_FUNC(pa_frame_size);

- LOAD_FUNC(pa_strerror);

- LOAD_FUNC(pa_context_get_state);

- LOAD_FUNC(pa_stream_get_state);

- LOAD_FUNC(pa_threaded_mainloop_signal);

- LOAD_FUNC(pa_stream_peek);

- LOAD_FUNC(pa_threaded_mainloop_wait);

- LOAD_FUNC(pa_threaded_mainloop_unlock);

- LOAD_FUNC(pa_threaded_mainloop_in_thread);

- LOAD_FUNC(pa_context_new);

- LOAD_FUNC(pa_threaded_mainloop_stop);

- LOAD_FUNC(pa_context_disconnect);

- LOAD_FUNC(pa_threaded_mainloop_start);

- LOAD_FUNC(pa_threaded_mainloop_get_api);

- LOAD_FUNC(pa_context_set_state_callback);

- LOAD_FUNC(pa_stream_write);

- LOAD_FUNC(pa_xfree);

- LOAD_FUNC(pa_stream_connect_record);

- LOAD_FUNC(pa_stream_connect_playback);

- LOAD_FUNC(pa_stream_readable_size);

- LOAD_FUNC(pa_stream_writable_size);

- LOAD_FUNC(pa_stream_is_corked);

- LOAD_FUNC(pa_stream_cork);

- LOAD_FUNC(pa_stream_is_suspended);

- LOAD_FUNC(pa_stream_get_device_name);

- LOAD_FUNC(pa_stream_get_latency);

- LOAD_FUNC(pa_path_get_filename);

- LOAD_FUNC(pa_get_binary_name);

- LOAD_FUNC(pa_threaded_mainloop_free);

- LOAD_FUNC(pa_context_errno);

- LOAD_FUNC(pa_xmalloc);

- LOAD_FUNC(pa_stream_unref);

- LOAD_FUNC(pa_threaded_mainloop_accept);

- LOAD_FUNC(pa_stream_set_write_callback);

- LOAD_FUNC(pa_threaded_mainloop_new);

- LOAD_FUNC(pa_context_connect);

- LOAD_FUNC(pa_stream_set_buffer_attr);

- LOAD_FUNC(pa_stream_get_buffer_attr);

- LOAD_FUNC(pa_stream_get_sample_spec);

- LOAD_FUNC(pa_stream_get_time);

- LOAD_FUNC(pa_stream_set_read_callback);

- LOAD_FUNC(pa_stream_set_state_callback);

- LOAD_FUNC(pa_stream_set_moved_callback);

- LOAD_FUNC(pa_stream_set_underflow_callback);

- LOAD_FUNC(pa_stream_new_with_proplist);

- LOAD_FUNC(pa_stream_disconnect);

- LOAD_FUNC(pa_threaded_mainloop_lock);

- LOAD_FUNC(pa_channel_map_init_auto);

- LOAD_FUNC(pa_channel_map_parse);

- LOAD_FUNC(pa_channel_map_snprint);

- LOAD_FUNC(pa_channel_map_equal);

- LOAD_FUNC(pa_context_get_server_info);

- LOAD_FUNC(pa_context_get_sink_info_by_name);

- LOAD_FUNC(pa_context_get_sink_info_list);

- LOAD_FUNC(pa_context_get_source_info_by_name);

- LOAD_FUNC(pa_context_get_source_info_list);

- LOAD_FUNC(pa_operation_get_state);

- LOAD_FUNC(pa_operation_unref);

- LOAD_FUNC(pa_proplist_new);

- LOAD_FUNC(pa_proplist_free);

- LOAD_FUNC(pa_proplist_set);

- LOAD_FUNC(pa_channel_map_superset);

- LOAD_FUNC(pa_stream_set_buffer_attr_callback);

- LOAD_FUNC(pa_stream_begin_write);

-#undef LOAD_FUNC

-

- if(ret == ALC_FALSE)

- {

- WARN("Missing expected functions:%s\n", alstr_get_cstr(missing_funcs));

- CloseLib(pa_handle);

- pa_handle = NULL;

- }

- alstr_reset(&missing_funcs);

- }

-#endif /* HAVE_DYNLOAD */

- return ret;

-}

-

-

-/* Global flags and properties */

-static pa_context_flags_t pulse_ctx_flags;

-static pa_proplist *prop_filter;

-

-

-/* PulseAudio Event Callbacks */

-static void context_state_callback(pa_context *context, void *pdata)

-{

- pa_threaded_mainloop *loop = pdata;

- pa_context_state_t state;

-

- state = pa_context_get_state(context);

- if(state == PA_CONTEXT_READY || !PA_CONTEXT_IS_GOOD(state))

- pa_threaded_mainloop_signal(loop, 0);

-}

-

-static void stream_state_callback(pa_stream *stream, void *pdata)

-{

- pa_threaded_mainloop *loop = pdata;

- pa_stream_state_t state;

-

- state = pa_stream_get_state(stream);

- if(state == PA_STREAM_READY || !PA_STREAM_IS_GOOD(state))

- pa_threaded_mainloop_signal(loop, 0);

-}

-

-static void stream_success_callback(pa_stream *UNUSED(stream), int UNUSED(success), void *pdata)

-{

- pa_threaded_mainloop *loop = pdata;

- pa_threaded_mainloop_signal(loop, 0);

-}

-

-static void wait_for_operation(pa_operation *op, pa_threaded_mainloop *loop)

-{

- if(op)

- {

- while(pa_operation_get_state(op) == PA_OPERATION_RUNNING)

- pa_threaded_mainloop_wait(loop);

- pa_operation_unref(op);

- }

-}

-

-

-static pa_context *connect_context(pa_threaded_mainloop *loop, ALboolean silent)

-{

- const char *name = "OpenAL Soft";

- al_string binname = AL_STRING_INIT_STATIC();

- pa_context_state_t state;

- pa_context *context;

- int err;

-

- GetProcBinary(NULL, &binname);

- if(!alstr_empty(binname))

- name = alstr_get_cstr(binname);

-

- context = pa_context_new(pa_threaded_mainloop_get_api(loop), name);

- if(!context)

- {

- ERR("pa_context_new() failed\n");

- alstr_reset(&binname);

- return NULL;

- }

-

- pa_context_set_state_callback(context, context_state_callback, loop);

-

- if((err=pa_context_connect(context, NULL, pulse_ctx_flags, NULL)) >= 0)

- {

- while((state=pa_context_get_state(context)) != PA_CONTEXT_READY)

- {

- if(!PA_CONTEXT_IS_GOOD(state))

- {

- err = pa_context_errno(context);

- if(err > 0) err = -err;

- break;

- }

-

- pa_threaded_mainloop_wait(loop);

- }

- }

- pa_context_set_state_callback(context, NULL, NULL);

-

- if(err < 0)

- {

- if(!silent)

- ERR("Context did not connect: %s\n", pa_strerror(err));

- pa_context_unref(context);

- context = NULL;

- }

-

- alstr_reset(&binname);

- return context;

-}

-

-

-static ALCboolean pulse_open(pa_threaded_mainloop **loop, pa_context **context,

- void(*state_cb)(pa_context*,void*), void *ptr)

-{

- if(!(*loop = pa_threaded_mainloop_new()))

- {

- ERR("pa_threaded_mainloop_new() failed!\n");

- return ALC_FALSE;

- }

- if(pa_threaded_mainloop_start(*loop) < 0)

- {

- ERR("pa_threaded_mainloop_start() failed\n");

- goto error;

- }

-

- pa_threaded_mainloop_lock(*loop);

-

- *context = connect_context(*loop, AL_FALSE);

- if(!*context)

- {

- pa_threaded_mainloop_unlock(*loop);

- pa_threaded_mainloop_stop(*loop);

- goto error;

- }

- pa_context_set_state_callback(*context, state_cb, ptr);

-

- pa_threaded_mainloop_unlock(*loop);

- return ALC_TRUE;

-

-error:

- pa_threaded_mainloop_free(*loop);

- *loop = NULL;

-

- return ALC_FALSE;

-}

-

-static void pulse_close(pa_threaded_mainloop *loop, pa_context *context, pa_stream *stream)

-{

- pa_threaded_mainloop_lock(loop);

-

- if(stream)

- {

- pa_stream_set_state_callback(stream, NULL, NULL);

- pa_stream_set_moved_callback(stream, NULL, NULL);

- pa_stream_set_write_callback(stream, NULL, NULL);

- pa_stream_set_buffer_attr_callback(stream, NULL, NULL);

- pa_stream_disconnect(stream);

- pa_stream_unref(stream);

- }

-

- pa_context_disconnect(context);

- pa_context_unref(context);

-

- pa_threaded_mainloop_unlock(loop);

-

- pa_threaded_mainloop_stop(loop);

- pa_threaded_mainloop_free(loop);

-}

-

-

-typedef struct {

- al_string name;

- al_string device_name;

-} DevMap;

-TYPEDEF_VECTOR(DevMap, vector_DevMap)

-

-static vector_DevMap PlaybackDevices;

-static vector_DevMap CaptureDevices;

-

-static void clear_devlist(vector_DevMap *list)

-{

-#define DEINIT_STRS(i) (AL_STRING_DEINIT((i)->name),AL_STRING_DEINIT((i)->device_name))

- VECTOR_FOR_EACH(DevMap, *list, DEINIT_STRS);

-#undef DEINIT_STRS

- VECTOR_RESIZE(*list, 0, 0);

-}

-

-

-typedef struct ALCpulsePlayback {

- DERIVE_FROM_TYPE(ALCbackend);

-

- al_string device_name;

-

- pa_buffer_attr attr;

- pa_sample_spec spec;

-

- pa_threaded_mainloop *loop;

-

- pa_stream *stream;

- pa_context *context;

-

- ATOMIC(ALenum) killNow;

- althrd_t thread;

-} ALCpulsePlayback;

-

-static void ALCpulsePlayback_deviceCallback(pa_context *context, const pa_sink_info *info, int eol, void *pdata);

-static void ALCpulsePlayback_probeDevices(void);

-

-static void ALCpulsePlayback_bufferAttrCallback(pa_stream *stream, void *pdata);

-static void ALCpulsePlayback_contextStateCallback(pa_context *context, void *pdata);

-static void ALCpulsePlayback_streamStateCallback(pa_stream *stream, void *pdata);

-static void ALCpulsePlayback_streamWriteCallback(pa_stream *p, size_t nbytes, void *userdata);

-static void ALCpulsePlayback_sinkInfoCallback(pa_context *context, const pa_sink_info *info, int eol, void *pdata);

-static void ALCpulsePlayback_sinkNameCallback(pa_context *context, const pa_sink_info *info, int eol, void *pdata);

-static void ALCpulsePlayback_streamMovedCallback(pa_stream *stream, void *pdata);

-static pa_stream *ALCpulsePlayback_connectStream(const char *device_name, pa_threaded_mainloop *loop,

- pa_context *context, pa_stream_flags_t flags,

- pa_buffer_attr *attr, pa_sample_spec *spec,

- pa_channel_map *chanmap);

-static int ALCpulsePlayback_mixerProc(void *ptr);

-

-static void ALCpulsePlayback_Construct(ALCpulsePlayback *self, ALCdevice *device);

-static void ALCpulsePlayback_Destruct(ALCpulsePlayback *self);

-static ALCenum ALCpulsePlayback_open(ALCpulsePlayback *self, const ALCchar *name);

-static ALCboolean ALCpulsePlayback_reset(ALCpulsePlayback *self);

-static ALCboolean ALCpulsePlayback_start(ALCpulsePlayback *self);

-static void ALCpulsePlayback_stop(ALCpulsePlayback *self);

-static DECLARE_FORWARD2(ALCpulsePlayback, ALCbackend, ALCenum, captureSamples, ALCvoid*, ALCuint)

-static DECLARE_FORWARD(ALCpulsePlayback, ALCbackend, ALCuint, availableSamples)

-static ClockLatency ALCpulsePlayback_getClockLatency(ALCpulsePlayback *self);

-static void ALCpulsePlayback_lock(ALCpulsePlayback *self);

-static void ALCpulsePlayback_unlock(ALCpulsePlayback *self);

-DECLARE_DEFAULT_ALLOCATORS(ALCpulsePlayback)

-

-DEFINE_ALCBACKEND_VTABLE(ALCpulsePlayback);

-

-

-static void ALCpulsePlayback_Construct(ALCpulsePlayback *self, ALCdevice *device)

-{

- ALCbackend_Construct(STATIC_CAST(ALCbackend, self), device);

- SET_VTABLE2(ALCpulsePlayback, ALCbackend, self);

-

- self->loop = NULL;

- AL_STRING_INIT(self->device_name);

- ATOMIC_INIT(&self->killNow, AL_TRUE);

-}

-

-static void ALCpulsePlayback_Destruct(ALCpulsePlayback *self)

-{

- if(self->loop)

- {

- pulse_close(self->loop, self->context, self->stream);

- self->loop = NULL;

- self->context = NULL;

- self->stream = NULL;

- }

- AL_STRING_DEINIT(self->device_name);

- ALCbackend_Destruct(STATIC_CAST(ALCbackend, self));

-}

-

-

-static void ALCpulsePlayback_deviceCallback(pa_context *UNUSED(context), const pa_sink_info *info, int eol, void *pdata)

-{

- pa_threaded_mainloop *loop = pdata;

- const DevMap *iter;

- DevMap entry;

- int count;

-

- if(eol)

- {

- pa_threaded_mainloop_signal(loop, 0);

- return;

- }

-

-#define MATCH_INFO_NAME(iter) (alstr_cmp_cstr((iter)->device_name, info->name) == 0)

- VECTOR_FIND_IF(iter, const DevMap, PlaybackDevices, MATCH_INFO_NAME);

- if(iter != VECTOR_END(PlaybackDevices)) return;

-#undef MATCH_INFO_NAME

-

- AL_STRING_INIT(entry.name);

- AL_STRING_INIT(entry.device_name);

-

- alstr_copy_cstr(&entry.device_name, info->name);

-

- count = 0;

- while(1)

- {

- alstr_copy_cstr(&entry.name, info->description);

- if(count != 0)

- {

- char str[64];

- snprintf(str, sizeof(str), " #%d", count+1);

- alstr_append_cstr(&entry.name, str);

- }

-

-#define MATCH_ENTRY(i) (alstr_cmp(entry.name, (i)->name) == 0)

- VECTOR_FIND_IF(iter, const DevMap, PlaybackDevices, MATCH_ENTRY);

- if(iter == VECTOR_END(PlaybackDevices)) break;

-#undef MATCH_ENTRY

- count++;

- }

-

- TRACE("Got device \"%s\", \"%s\"\n", alstr_get_cstr(entry.name), alstr_get_cstr(entry.device_name));

-

- VECTOR_PUSH_BACK(PlaybackDevices, entry);

-}

-

-static void ALCpulsePlayback_probeDevices(void)

-{

- pa_threaded_mainloop *loop;

-

- clear_devlist(&PlaybackDevices);

-

- if((loop=pa_threaded_mainloop_new()) &&

- pa_threaded_mainloop_start(loop) >= 0)

- {

- pa_context *context;

-

- pa_threaded_mainloop_lock(loop);

- context = connect_context(loop, AL_FALSE);

- if(context)

- {

- pa_operation *o;

- pa_stream_flags_t flags;

- pa_sample_spec spec;

- pa_stream *stream;

-

- flags = PA_STREAM_FIX_FORMAT | PA_STREAM_FIX_RATE |

- PA_STREAM_FIX_CHANNELS | PA_STREAM_DONT_MOVE;

-

- spec.format = PA_SAMPLE_S16NE;

- spec.rate = 44100;

- spec.channels = 2;

-

- stream = ALCpulsePlayback_connectStream(NULL, loop, context, flags,

- NULL, &spec, NULL);

- if(stream)

- {

- o = pa_context_get_sink_info_by_name(context, pa_stream_get_device_name(stream),

- ALCpulsePlayback_deviceCallback, loop);

- wait_for_operation(o, loop);

-

- pa_stream_disconnect(stream);

- pa_stream_unref(stream);

- stream = NULL;

- }

-

- o = pa_context_get_sink_info_list(context, ALCpulsePlayback_deviceCallback, loop);

- wait_for_operation(o, loop);

-

- pa_context_disconnect(context);

- pa_context_unref(context);

- }

- pa_threaded_mainloop_unlock(loop);

- pa_threaded_mainloop_stop(loop);

- }

- if(loop)

- pa_threaded_mainloop_free(loop);

-}

-

-

-static void ALCpulsePlayback_bufferAttrCallback(pa_stream *stream, void *pdata)

-{

- ALCpulsePlayback *self = pdata;

-

- self->attr = *pa_stream_get_buffer_attr(stream);

- TRACE("minreq=%d, tlength=%d, prebuf=%d\n", self->attr.minreq, self->attr.tlength, self->attr.prebuf);

- /* FIXME: Update the device's UpdateSize (and/or NumUpdates) using the new

- * buffer attributes? Changing UpdateSize will change the ALC_REFRESH

- * property, which probably shouldn't change between device resets. But

- * leaving it alone means ALC_REFRESH will be off.

- */

-}

-

-static void ALCpulsePlayback_contextStateCallback(pa_context *context, void *pdata)

-{

- ALCpulsePlayback *self = pdata;

- if(pa_context_get_state(context) == PA_CONTEXT_FAILED)

- {

- ERR("Received context failure!\n");

- aluHandleDisconnect(STATIC_CAST(ALCbackend,self)->mDevice, "Playback state failure");

- }

- pa_threaded_mainloop_signal(self->loop, 0);

-}

-

-static void ALCpulsePlayback_streamStateCallback(pa_stream *stream, void *pdata)

-{

- ALCpulsePlayback *self = pdata;

- if(pa_stream_get_state(stream) == PA_STREAM_FAILED)

- {

- ERR("Received stream failure!\n");

- aluHandleDisconnect(STATIC_CAST(ALCbackend,self)->mDevice, "Playback stream failure");

- }

- pa_threaded_mainloop_signal(self->loop, 0);

-}

-

-static void ALCpulsePlayback_streamWriteCallback(pa_stream* UNUSED(p), size_t UNUSED(nbytes), void *pdata)

-{

- ALCpulsePlayback *self = pdata;

- pa_threaded_mainloop_signal(self->loop, 0);

-}

-

-static void ALCpulsePlayback_sinkInfoCallback(pa_context *UNUSED(context), const pa_sink_info *info, int eol, void *pdata)

-{

- static const struct {

- enum DevFmtChannels chans;

- pa_channel_map map;

- } chanmaps[] = {

- { DevFmtX71, { 8, {

- PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT,

- PA_CHANNEL_POSITION_FRONT_CENTER, PA_CHANNEL_POSITION_LFE,

- PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT,

- PA_CHANNEL_POSITION_SIDE_LEFT, PA_CHANNEL_POSITION_SIDE_RIGHT

- } } },

- { DevFmtX61, { 7, {

- PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT,

- PA_CHANNEL_POSITION_FRONT_CENTER, PA_CHANNEL_POSITION_LFE,

- PA_CHANNEL_POSITION_REAR_CENTER,

- PA_CHANNEL_POSITION_SIDE_LEFT, PA_CHANNEL_POSITION_SIDE_RIGHT

- } } },

- { DevFmtX51, { 6, {

- PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT,

- PA_CHANNEL_POSITION_FRONT_CENTER, PA_CHANNEL_POSITION_LFE,

- PA_CHANNEL_POSITION_SIDE_LEFT, PA_CHANNEL_POSITION_SIDE_RIGHT

- } } },

- { DevFmtX51Rear, { 6, {

- PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT,

- PA_CHANNEL_POSITION_FRONT_CENTER, PA_CHANNEL_POSITION_LFE,

- PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT

- } } },

- { DevFmtQuad, { 4, {

- PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT,

- PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT

- } } },

- { DevFmtStereo, { 2, {

- PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT

- } } },

- { DevFmtMono, { 1, {PA_CHANNEL_POSITION_MONO} } }

- };

- ALCpulsePlayback *self = pdata;

- ALCdevice *device = STATIC_CAST(ALCbackend,self)->mDevice;

- size_t i;

-

- if(eol)

- {

- pa_threaded_mainloop_signal(self->loop, 0);

- return;

- }

-

- for(i = 0;i < COUNTOF(chanmaps);i++)

- {

- if(pa_channel_map_superset(&info->channel_map, &chanmaps[i].map))

- {

- if(!(device->Flags&DEVICE_CHANNELS_REQUEST))

- device->FmtChans = chanmaps[i].chans;

- break;

- }

- }

- if(i == COUNTOF(chanmaps))

- {

- char chanmap_str[PA_CHANNEL_MAP_SNPRINT_MAX] = "";

- pa_channel_map_snprint(chanmap_str, sizeof(chanmap_str), &info->channel_map);

- WARN("Failed to find format for channel map:\n %s\n", chanmap_str);

- }

-

- if(info->active_port)

- TRACE("Active port: %s (%s)\n", info->active_port->name, info->active_port->description);

- device->IsHeadphones = (info->active_port &&

- strcmp(info->active_port->name, "analog-output-headphones") == 0 &&

- device->FmtChans == DevFmtStereo);

-}

-

-static void ALCpulsePlayback_sinkNameCallback(pa_context *UNUSED(context), const pa_sink_info *info, int eol, void *pdata)

-{

- ALCpulsePlayback *self = pdata;

- ALCdevice *device = STATIC_CAST(ALCbackend,self)->mDevice;

-

- if(eol)

- {

- pa_threaded_mainloop_signal(self->loop, 0);

- return;

- }

-

- alstr_copy_cstr(&device->DeviceName, info->description);

-}

-

-

-static void ALCpulsePlayback_streamMovedCallback(pa_stream *stream, void *pdata)

-{

- ALCpulsePlayback *self = pdata;

-

- alstr_copy_cstr(&self->device_name, pa_stream_get_device_name(stream));

-

- TRACE("Stream moved to %s\n", alstr_get_cstr(self->device_name));

-}

-

-

-static pa_stream *ALCpulsePlayback_connectStream(const char *device_name,

- pa_threaded_mainloop *loop, pa_context *context,

- pa_stream_flags_t flags, pa_buffer_attr *attr, pa_sample_spec *spec,

- pa_channel_map *chanmap)

-{

- pa_stream_state_t state;

- pa_stream *stream;

-

- if(!device_name)

- {

- device_name = getenv("ALSOFT_PULSE_DEFAULT");

- if(device_name && !device_name[0])

- device_name = NULL;

- }

-

- stream = pa_stream_new_with_proplist(context, "Playback Stream", spec, chanmap, prop_filter);

- if(!stream)

- {

- ERR("pa_stream_new_with_proplist() failed: %s\n", pa_strerror(pa_context_errno(context)));

- return NULL;

- }

-

- pa_stream_set_state_callback(stream, stream_state_callback, loop);

-

- if(pa_stream_connect_playback(stream, device_name, attr, flags, NULL, NULL) < 0)

- {

- ERR("Stream did not connect: %s\n", pa_strerror(pa_context_errno(context)));

- pa_stream_unref(stream);

- return NULL;

- }

-

- while((state=pa_stream_get_state(stream)) != PA_STREAM_READY)

- {

- if(!PA_STREAM_IS_GOOD(state))

- {

- ERR("Stream did not get ready: %s\n", pa_strerror(pa_context_errno(context)));

- pa_stream_unref(stream);

- return NULL;

- }

-

- pa_threaded_mainloop_wait(loop);

- }

- pa_stream_set_state_callback(stream, NULL, NULL);

-

- return stream;

-}

-

-

-static int ALCpulsePlayback_mixerProc(void *ptr)

-{

- ALCpulsePlayback *self = ptr;

- ALCdevice *device = STATIC_CAST(ALCbackend,self)->mDevice;

- ALuint buffer_size;

- size_t frame_size;

- ssize_t len;

-

- SetRTPriority();

- althrd_setname(althrd_current(), MIXER_THREAD_NAME);

-

- pa_threaded_mainloop_lock(self->loop);

- frame_size = pa_frame_size(&self->spec);

-

- while(!ATOMIC_LOAD(&self->killNow, almemory_order_acquire) &&

- ATOMIC_LOAD(&device->Connected, almemory_order_acquire))

- {

- void *buf;

- int ret;

-

- len = pa_stream_writable_size(self->stream);

- if(len < 0)

- {

- ERR("Failed to get writable size: %ld", (long)len);

- aluHandleDisconnect(device, "Failed to get writable size: %ld", (long)len);

- break;

- }

-

- /* Make sure we're going to write at least 2 'periods' (minreqs), in

- * case the server increased it since starting playback. Also round up

- * the number of writable periods if it's not an integer count.

- */

- buffer_size = maxu((self->attr.tlength + self->attr.minreq/2) / self->attr.minreq, 2) *

- self->attr.minreq;

-

- /* NOTE: This assumes pa_stream_writable_size returns between 0 and

- * tlength, else there will be more latency than intended.

- */

- len = mini(len - (ssize_t)self->attr.tlength, 0) + buffer_size;

- if(len < (int32_t)self->attr.minreq)

- {

- if(pa_stream_is_corked(self->stream))

- {

- pa_operation *o;

- o = pa_stream_cork(self->stream, 0, NULL, NULL);

- if(o) pa_operation_unref(o);

- }

- pa_threaded_mainloop_wait(self->loop);

- continue;

- }

-

- len -= len%self->attr.minreq;

- len -= len%frame_size;

-

- buf = pa_xmalloc(len);

-

- aluMixData(device, buf, len/frame_size);

-

- ret = pa_stream_write(self->stream, buf, len, pa_xfree, 0, PA_SEEK_RELATIVE);

- if(ret != PA_OK) ERR("Failed to write to stream: %d, %s\n", ret, pa_strerror(ret));

- }

- pa_threaded_mainloop_unlock(self->loop);

-

- return 0;

-}

-

-

-static ALCenum ALCpulsePlayback_open(ALCpulsePlayback *self, const ALCchar *name)

-{

- const_al_string dev_name = AL_STRING_INIT_STATIC();

- const char *pulse_name = NULL;

- pa_stream_flags_t flags;

- pa_sample_spec spec;

-

- if(name)

- {

- const DevMap *iter;

-

- if(VECTOR_SIZE(PlaybackDevices) == 0)

- ALCpulsePlayback_probeDevices();

-

-#define MATCH_NAME(iter) (alstr_cmp_cstr((iter)->name, name) == 0)

- VECTOR_FIND_IF(iter, const DevMap, PlaybackDevices, MATCH_NAME);

-#undef MATCH_NAME

- if(iter == VECTOR_END(PlaybackDevices))

- return ALC_INVALID_VALUE;

- pulse_name = alstr_get_cstr(iter->device_name);

- dev_name = iter->name;

- }

-

- if(!pulse_open(&self->loop, &self->context, ALCpulsePlayback_contextStateCallback, self))

- return ALC_INVALID_VALUE;

-

- pa_threaded_mainloop_lock(self->loop);

-

- flags = PA_STREAM_FIX_FORMAT | PA_STREAM_FIX_RATE |

- PA_STREAM_FIX_CHANNELS;

- if(!GetConfigValueBool(NULL, "pulse", "allow-moves", 0))

- flags |= PA_STREAM_DONT_MOVE;

-

- spec.format = PA_SAMPLE_S16NE;

- spec.rate = 44100;

- spec.channels = 2;

-

- TRACE("Connecting to \"%s\"\n", pulse_name ? pulse_name : "(default)");

- self->stream = ALCpulsePlayback_connectStream(pulse_name, self->loop, self->context,

- flags, NULL, &spec, NULL);

- if(!self->stream)

- {

- pa_threaded_mainloop_unlock(self->loop);

- pulse_close(self->loop, self->context, self->stream);

- self->loop = NULL;

- self->context = NULL;

- return ALC_INVALID_VALUE;

- }

- pa_stream_set_moved_callback(self->stream, ALCpulsePlayback_streamMovedCallback, self);

-

- alstr_copy_cstr(&self->device_name, pa_stream_get_device_name(self->stream));

- if(alstr_empty(dev_name))

- {

- pa_operation *o = pa_context_get_sink_info_by_name(

- self->context, alstr_get_cstr(self->device_name),

- ALCpulsePlayback_sinkNameCallback, self

- );

- wait_for_operation(o, self->loop);

- }

- else

- {

- ALCdevice *device = STATIC_CAST(ALCbackend,self)->mDevice;

- alstr_copy(&device->DeviceName, dev_name);

- }

-

- pa_threaded_mainloop_unlock(self->loop);

-

- return ALC_NO_ERROR;

-}

-

-static ALCboolean ALCpulsePlayback_reset(ALCpulsePlayback *self)

-{

- ALCdevice *device = STATIC_CAST(ALCbackend,self)->mDevice;

- pa_stream_flags_t flags = 0;

- const char *mapname = NULL;

- pa_channel_map chanmap;

- pa_operation *o;

-

- pa_threaded_mainloop_lock(self->loop);

-

- if(self->stream)

- {

- pa_stream_set_state_callback(self->stream, NULL, NULL);

- pa_stream_set_moved_callback(self->stream, NULL, NULL);

- pa_stream_set_write_callback(self->stream, NULL, NULL);

- pa_stream_set_buffer_attr_callback(self->stream, NULL, NULL);

- pa_stream_disconnect(self->stream);

- pa_stream_unref(self->stream);

- self->stream = NULL;

- }

-

- o = pa_context_get_sink_info_by_name(self->context, alstr_get_cstr(self->device_name),

- ALCpulsePlayback_sinkInfoCallback, self);

- wait_for_operation(o, self->loop);

-

- if(GetConfigValueBool(alstr_get_cstr(device->DeviceName), "pulse", "fix-rate", 0) ||

- !(device->Flags&DEVICE_FREQUENCY_REQUEST))

- flags |= PA_STREAM_FIX_RATE;

- flags |= PA_STREAM_INTERPOLATE_TIMING | PA_STREAM_AUTO_TIMING_UPDATE;

- flags |= PA_STREAM_ADJUST_LATENCY;

- flags |= PA_STREAM_START_CORKED;

- if(!GetConfigValueBool(NULL, "pulse", "allow-moves", 0))

- flags |= PA_STREAM_DONT_MOVE;

-

- switch(device->FmtType)

- {

- case DevFmtByte:

- device->FmtType = DevFmtUByte;

- /* fall-through */

- case DevFmtUByte:

- self->spec.format = PA_SAMPLE_U8;

- break;

- case DevFmtUShort:

- device->FmtType = DevFmtShort;

- /* fall-through */

- case DevFmtShort:

- self->spec.format = PA_SAMPLE_S16NE;

- break;

- case DevFmtUInt:

- device->FmtType = DevFmtInt;

- /* fall-through */

- case DevFmtInt:

- self->spec.format = PA_SAMPLE_S32NE;

- break;

- case DevFmtFloat:

- self->spec.format = PA_SAMPLE_FLOAT32NE;

- break;

- }

- self->spec.rate = device->Frequency;

- self->spec.channels = ChannelsFromDevFmt(device->FmtChans, device->AmbiOrder);

-

- if(pa_sample_spec_valid(&self->spec) == 0)

- {

- ERR("Invalid sample format\n");

- pa_threaded_mainloop_unlock(self->loop);

- return ALC_FALSE;

- }

-

- switch(device->FmtChans)

- {

- case DevFmtMono:

- mapname = "mono";

- break;

- case DevFmtAmbi3D:

- device->FmtChans = DevFmtStereo;

- /*fall-through*/

- case DevFmtStereo:

- mapname = "front-left,front-right";

- break;

- case DevFmtQuad:

- mapname = "front-left,front-right,rear-left,rear-right";

- break;

- case DevFmtX51:

- mapname = "front-left,front-right,front-center,lfe,side-left,side-right";

- break;

- case DevFmtX51Rear:

- mapname = "front-left,front-right,front-center,lfe,rear-left,rear-right";

- break;

- case DevFmtX61:

- mapname = "front-left,front-right,front-center,lfe,rear-center,side-left,side-right";

- break;

- case DevFmtX71:

- mapname = "front-left,front-right,front-center,lfe,rear-left,rear-right,side-left,side-right";

- break;

- }

- if(!pa_channel_map_parse(&chanmap, mapname))

- {

- ERR("Failed to build channel map for %s\n", DevFmtChannelsString(device->FmtChans));

- pa_threaded_mainloop_unlock(self->loop);

- return ALC_FALSE;

- }

- SetDefaultWFXChannelOrder(device);

-

- self->attr.fragsize = -1;

- self->attr.prebuf = 0;

- self->attr.minreq = device->UpdateSize * pa_frame_size(&self->spec);

- self->attr.tlength = self->attr.minreq * maxu(device->NumUpdates, 2);

- self->attr.maxlength = -1;

-

- self->stream = ALCpulsePlayback_connectStream(alstr_get_cstr(self->device_name),

- self->loop, self->context, flags, &self->attr, &self->spec, &chanmap

- );

- if(!self->stream)

- {

- pa_threaded_mainloop_unlock(self->loop);

- return ALC_FALSE;

- }

- pa_stream_set_state_callback(self->stream, ALCpulsePlayback_streamStateCallback, self);

- pa_stream_set_moved_callback(self->stream, ALCpulsePlayback_streamMovedCallback, self);

- pa_stream_set_write_callback(self->stream, ALCpulsePlayback_streamWriteCallback, self);

-

- self->spec = *(pa_stream_get_sample_spec(self->stream));

- if(device->Frequency != self->spec.rate)

- {

- /* Server updated our playback rate, so modify the buffer attribs

- * accordingly. */

- device->NumUpdates = (ALuint)clampd(

- (ALdouble)device->NumUpdates/device->Frequency*self->spec.rate + 0.5, 2.0, 16.0

- );

-

- self->attr.minreq = device->UpdateSize * pa_frame_size(&self->spec);

- self->attr.tlength = self->attr.minreq * device->NumUpdates;

- self->attr.maxlength = -1;

- self->attr.prebuf = 0;

-

- o = pa_stream_set_buffer_attr(self->stream, &self->attr,

- stream_success_callback, self->loop);

- wait_for_operation(o, self->loop);

-

- device->Frequency = self->spec.rate;

- }

-

- pa_stream_set_buffer_attr_callback(self->stream, ALCpulsePlayback_bufferAttrCallback, self);

- ALCpulsePlayback_bufferAttrCallback(self->stream, self);

-

- device->NumUpdates = (ALuint)clampu64(

- (self->attr.tlength + self->attr.minreq/2) / self->attr.minreq, 2, 16

- );

- device->UpdateSize = self->attr.minreq / pa_frame_size(&self->spec);

-

- /* HACK: prebuf should be 0 as that's what we set it to. However on some

- * systems it comes back as non-0, so we have to make sure the device will

- * write enough audio to start playback. The lack of manual start control

- * may have unintended consequences, but it's better than not starting at

- * all.

- */

- if(self->attr.prebuf != 0)

- {

- ALuint len = self->attr.prebuf / pa_frame_size(&self->spec);

- if(len <= device->UpdateSize*device->NumUpdates)

- ERR("Non-0 prebuf, %u samples (%u bytes), device has %u samples\n",

- len, self->attr.prebuf, device->UpdateSize*device->NumUpdates);

- else

- {

- ERR("Large prebuf, %u samples (%u bytes), increasing device from %u samples",

- len, self->attr.prebuf, device->UpdateSize*device->NumUpdates);

- device->NumUpdates = (len+device->UpdateSize-1) / device->UpdateSize;

- }

- }

-

- pa_threaded_mainloop_unlock(self->loop);

- return ALC_TRUE;

-}

-

-static ALCboolean ALCpulsePlayback_start(ALCpulsePlayback *self)

-{

- ATOMIC_STORE(&self->killNow, AL_FALSE, almemory_order_release);

- if(althrd_create(&self->thread, ALCpulsePlayback_mixerProc, self) != althrd_success)

- return ALC_FALSE;

- return ALC_TRUE;

-}

-

-static void ALCpulsePlayback_stop(ALCpulsePlayback *self)

-{

- pa_operation *o;

- int res;

-

- if(!self->stream || ATOMIC_EXCHANGE(&self->killNow, AL_TRUE, almemory_order_acq_rel))

- return;

-

- /* Signal the main loop in case PulseAudio isn't sending us audio requests

- * (e.g. if the device is suspended). We need to lock the mainloop in case

- * the mixer is between checking the killNow flag but before waiting for

- * the signal.

- */

- pa_threaded_mainloop_lock(self->loop);

- pa_threaded_mainloop_unlock(self->loop);

- pa_threaded_mainloop_signal(self->loop, 0);

- althrd_join(self->thread, &res);

-

- pa_threaded_mainloop_lock(self->loop);

-

- o = pa_stream_cork(self->stream, 1, stream_success_callback, self->loop);

- wait_for_operation(o, self->loop);

-

- pa_threaded_mainloop_unlock(self->loop);

-}

-

-

-static ClockLatency ALCpulsePlayback_getClockLatency(ALCpulsePlayback *self)

-{

- ClockLatency ret;

- pa_usec_t latency;

- int neg, err;

-

- pa_threaded_mainloop_lock(self->loop);

- ret.ClockTime = GetDeviceClockTime(STATIC_CAST(ALCbackend,self)->mDevice);

- err = pa_stream_get_latency(self->stream, &latency, &neg);

- pa_threaded_mainloop_unlock(self->loop);

-

- if(UNLIKELY(err != 0))

- {

- /* FIXME: if err = -PA_ERR_NODATA, it means we were called too soon

- * after starting the stream and no timing info has been received from

- * the server yet. Should we wait, possibly stalling the app, or give a

- * dummy value? Either way, it shouldn't be 0. */

- if(err != -PA_ERR_NODATA)

- ERR("Failed to get stream latency: 0x%x\n", err);

- latency = 0;

- neg = 0;

- }

- else if(UNLIKELY(neg))

- latency = 0;

- ret.Latency = (ALint64)minu64(latency, U64(0x7fffffffffffffff)/1000) * 1000;

-

- return ret;

-}

-

-

-static void ALCpulsePlayback_lock(ALCpulsePlayback *self)

-{

- pa_threaded_mainloop_lock(self->loop);

-}

-

-static void ALCpulsePlayback_unlock(ALCpulsePlayback *self)

-{

- pa_threaded_mainloop_unlock(self->loop);

-}

-

-

-typedef struct ALCpulseCapture {

- DERIVE_FROM_TYPE(ALCbackend);

-

- al_string device_name;

-

- const void *cap_store;

- size_t cap_len;

- size_t cap_remain;

-

- ALCuint last_readable;

-

- pa_buffer_attr attr;

- pa_sample_spec spec;

-

- pa_threaded_mainloop *loop;

-

- pa_stream *stream;

- pa_context *context;

-} ALCpulseCapture;

-

-static void ALCpulseCapture_deviceCallback(pa_context *context, const pa_source_info *info, int eol, void *pdata);

-static void ALCpulseCapture_probeDevices(void);

-

-static void ALCpulseCapture_contextStateCallback(pa_context *context, void *pdata);

-static void ALCpulseCapture_streamStateCallback(pa_stream *stream, void *pdata);

-static void ALCpulseCapture_sourceNameCallback(pa_context *context, const pa_source_info *info, int eol, void *pdata);

-static void ALCpulseCapture_streamMovedCallback(pa_stream *stream, void *pdata);

-static pa_stream *ALCpulseCapture_connectStream(const char *device_name,

- pa_threaded_mainloop *loop, pa_context *context,

- pa_stream_flags_t flags, pa_buffer_attr *attr,

- pa_sample_spec *spec, pa_channel_map *chanmap);

-

-static void ALCpulseCapture_Construct(ALCpulseCapture *self, ALCdevice *device);

-static void ALCpulseCapture_Destruct(ALCpulseCapture *self);

-static ALCenum ALCpulseCapture_open(ALCpulseCapture *self, const ALCchar *name);

-static DECLARE_FORWARD(ALCpulseCapture, ALCbackend, ALCboolean, reset)

-static ALCboolean ALCpulseCapture_start(ALCpulseCapture *self);

-static void ALCpulseCapture_stop(ALCpulseCapture *self);

-static ALCenum ALCpulseCapture_captureSamples(ALCpulseCapture *self, ALCvoid *buffer, ALCuint samples);

-static ALCuint ALCpulseCapture_availableSamples(ALCpulseCapture *self);

-static ClockLatency ALCpulseCapture_getClockLatency(ALCpulseCapture *self);

-static void ALCpulseCapture_lock(ALCpulseCapture *self);

-static void ALCpulseCapture_unlock(ALCpulseCapture *self);

-DECLARE_DEFAULT_ALLOCATORS(ALCpulseCapture)

-

-DEFINE_ALCBACKEND_VTABLE(ALCpulseCapture);

-

-

-static void ALCpulseCapture_Construct(ALCpulseCapture *self, ALCdevice *device)

-{

- ALCbackend_Construct(STATIC_CAST(ALCbackend, self), device);

- SET_VTABLE2(ALCpulseCapture, ALCbackend, self);

-

- self->loop = NULL;

- AL_STRING_INIT(self->device_name);

-}

-

-static void ALCpulseCapture_Destruct(ALCpulseCapture *self)

-{

- if(self->loop)

- {

- pulse_close(self->loop, self->context, self->stream);

- self->loop = NULL;

- self->context = NULL;

- self->stream = NULL;

- }

- AL_STRING_DEINIT(self->device_name);

- ALCbackend_Destruct(STATIC_CAST(ALCbackend, self));

-}

-

-

-static void ALCpulseCapture_deviceCallback(pa_context *UNUSED(context), const pa_source_info *info, int eol, void *pdata)

-{

- pa_threaded_mainloop *loop = pdata;

- const DevMap *iter;

- DevMap entry;

- int count;

-

- if(eol)

- {

- pa_threaded_mainloop_signal(loop, 0);

- return;

- }

-

-#define MATCH_INFO_NAME(iter) (alstr_cmp_cstr((iter)->device_name, info->name) == 0)

- VECTOR_FIND_IF(iter, const DevMap, CaptureDevices, MATCH_INFO_NAME);

- if(iter != VECTOR_END(CaptureDevices)) return;

-#undef MATCH_INFO_NAME

-

- AL_STRING_INIT(entry.name);

- AL_STRING_INIT(entry.device_name);

-

- alstr_copy_cstr(&entry.device_name, info->name);

-

- count = 0;

- while(1)

- {

- alstr_copy_cstr(&entry.name, info->description);

- if(count != 0)

- {

- char str[64];

- snprintf(str, sizeof(str), " #%d", count+1);

- alstr_append_cstr(&entry.name, str);

- }

-

-#define MATCH_ENTRY(i) (alstr_cmp(entry.name, (i)->name) == 0)

- VECTOR_FIND_IF(iter, const DevMap, CaptureDevices, MATCH_ENTRY);

- if(iter == VECTOR_END(CaptureDevices)) break;

-#undef MATCH_ENTRY

- count++;

- }

-

- TRACE("Got device \"%s\", \"%s\"\n", alstr_get_cstr(entry.name), alstr_get_cstr(entry.device_name));

-

- VECTOR_PUSH_BACK(CaptureDevices, entry);

-}

-

-static void ALCpulseCapture_probeDevices(void)

-{

- pa_threaded_mainloop *loop;

-

- clear_devlist(&CaptureDevices);

-

- if((loop=pa_threaded_mainloop_new()) &&

- pa_threaded_mainloop_start(loop) >= 0)

- {

- pa_context *context;

-

- pa_threaded_mainloop_lock(loop);

- context = connect_context(loop, AL_FALSE);

- if(context)

- {

- pa_operation *o;

- pa_stream_flags_t flags;

- pa_sample_spec spec;

- pa_stream *stream;

-

- flags = PA_STREAM_FIX_FORMAT | PA_STREAM_FIX_RATE |

- PA_STREAM_FIX_CHANNELS | PA_STREAM_DONT_MOVE;

-

- spec.format = PA_SAMPLE_S16NE;

- spec.rate = 44100;

- spec.channels = 1;

-

- stream = ALCpulseCapture_connectStream(NULL, loop, context, flags,

- NULL, &spec, NULL);

- if(stream)

- {

- o = pa_context_get_source_info_by_name(context, pa_stream_get_device_name(stream),

- ALCpulseCapture_deviceCallback, loop);

- wait_for_operation(o, loop);

-

- pa_stream_disconnect(stream);

- pa_stream_unref(stream);

- stream = NULL;

- }

-

- o = pa_context_get_source_info_list(context, ALCpulseCapture_deviceCallback, loop);

- wait_for_operation(o, loop);

-

- pa_context_disconnect(context);

- pa_context_unref(context);

- }

- pa_threaded_mainloop_unlock(loop);

- pa_threaded_mainloop_stop(loop);

- }

- if(loop)

- pa_threaded_mainloop_free(loop);

-}

-

-

-static void ALCpulseCapture_contextStateCallback(pa_context *context, void *pdata)

-{

- ALCpulseCapture *self = pdata;

- if(pa_context_get_state(context) == PA_CONTEXT_FAILED)

- {

- ERR("Received context failure!\n");

- aluHandleDisconnect(STATIC_CAST(ALCbackend,self)->mDevice, "Capture state failure");

- }

- pa_threaded_mainloop_signal(self->loop, 0);

-}

-

-static void ALCpulseCapture_streamStateCallback(pa_stream *stream, void *pdata)

-{

- ALCpulseCapture *self = pdata;

- if(pa_stream_get_state(stream) == PA_STREAM_FAILED)

- {

- ERR("Received stream failure!\n");

- aluHandleDisconnect(STATIC_CAST(ALCbackend,self)->mDevice, "Capture stream failure");

- }

- pa_threaded_mainloop_signal(self->loop, 0);

-}

-

-

-static void ALCpulseCapture_sourceNameCallback(pa_context *UNUSED(context), const pa_source_info *info, int eol, void *pdata)

-{

- ALCpulseCapture *self = pdata;

- ALCdevice *device = STATIC_CAST(ALCbackend,self)->mDevice;

-

- if(eol)

- {

- pa_threaded_mainloop_signal(self->loop, 0);

- return;

- }

-

- alstr_copy_cstr(&device->DeviceName, info->description);

-}

-

-

-static void ALCpulseCapture_streamMovedCallback(pa_stream *stream, void *pdata)

-{

- ALCpulseCapture *self = pdata;

-

- alstr_copy_cstr(&self->device_name, pa_stream_get_device_name(stream));

-

- TRACE("Stream moved to %s\n", alstr_get_cstr(self->device_name));

-}

-

-

-static pa_stream *ALCpulseCapture_connectStream(const char *device_name,

- pa_threaded_mainloop *loop, pa_context *context,

- pa_stream_flags_t flags, pa_buffer_attr *attr, pa_sample_spec *spec,

- pa_channel_map *chanmap)

-{

- pa_stream_state_t state;

- pa_stream *stream;

-

- stream = pa_stream_new_with_proplist(context, "Capture Stream", spec, chanmap, prop_filter);

- if(!stream)

- {

- ERR("pa_stream_new_with_proplist() failed: %s\n", pa_strerror(pa_context_errno(context)));

- return NULL;

- }

-

- pa_stream_set_state_callback(stream, stream_state_callback, loop);

-

- if(pa_stream_connect_record(stream, device_name, attr, flags) < 0)

- {

- ERR("Stream did not connect: %s\n", pa_strerror(pa_context_errno(context)));

- pa_stream_unref(stream);

- return NULL;

- }

-

- while((state=pa_stream_get_state(stream)) != PA_STREAM_READY)

- {

- if(!PA_STREAM_IS_GOOD(state))

- {

- ERR("Stream did not get ready: %s\n", pa_strerror(pa_context_errno(context)));

- pa_stream_unref(stream);

- return NULL;

- }

-

- pa_threaded_mainloop_wait(loop);

- }

- pa_stream_set_state_callback(stream, NULL, NULL);

-

- return stream;

-}

-

-

-static ALCenum ALCpulseCapture_open(ALCpulseCapture *self, const ALCchar *name)

-{

- ALCdevice *device = STATIC_CAST(ALCbackend,self)->mDevice;

- const char *pulse_name = NULL;

- pa_stream_flags_t flags = 0;

- const char *mapname = NULL;

- pa_channel_map chanmap;

- ALuint samples;

-

- if(name)

- {

- const DevMap *iter;

-

- if(VECTOR_SIZE(CaptureDevices) == 0)

- ALCpulseCapture_probeDevices();

-

-#define MATCH_NAME(iter) (alstr_cmp_cstr((iter)->name, name) == 0)

- VECTOR_FIND_IF(iter, const DevMap, CaptureDevices, MATCH_NAME);

-#undef MATCH_NAME

- if(iter == VECTOR_END(CaptureDevices))

- return ALC_INVALID_VALUE;

- pulse_name = alstr_get_cstr(iter->device_name);

- alstr_copy(&device->DeviceName, iter->name);

- }

-

- if(!pulse_open(&self->loop, &self->context, ALCpulseCapture_contextStateCallback, self))

- return ALC_INVALID_VALUE;

-

- pa_threaded_mainloop_lock(self->loop);

-

- switch(device->FmtType)

- {

- case DevFmtUByte:

- self->spec.format = PA_SAMPLE_U8;

- break;

- case DevFmtShort:

- self->spec.format = PA_SAMPLE_S16NE;

- break;

- case DevFmtInt:

- self->spec.format = PA_SAMPLE_S32NE;

- break;

- case DevFmtFloat:

- self->spec.format = PA_SAMPLE_FLOAT32NE;

- break;

- case DevFmtByte:

- case DevFmtUShort:

- case DevFmtUInt:

- ERR("%s capture samples not supported\n", DevFmtTypeString(device->FmtType));

- pa_threaded_mainloop_unlock(self->loop);

- goto fail;

- }

-

- switch(device->FmtChans)

- {

- case DevFmtMono:

- mapname = "mono";

- break;

- case DevFmtStereo:

- mapname = "front-left,front-right";

- break;

- case DevFmtQuad:

- mapname = "front-left,front-right,rear-left,rear-right";

- break;

- case DevFmtX51:

- mapname = "front-left,front-right,front-center,lfe,side-left,side-right";

- break;

- case DevFmtX51Rear:

- mapname = "front-left,front-right,front-center,lfe,rear-left,rear-right";

- break;

- case DevFmtX61:

- mapname = "front-left,front-right,front-center,lfe,rear-center,side-left,side-right";

- break;

- case DevFmtX71:

- mapname = "front-left,front-right,front-center,lfe,rear-left,rear-right,side-left,side-right";

- break;

- case DevFmtAmbi3D:

- ERR("%s capture samples not supported\n", DevFmtChannelsString(device->FmtChans));

- pa_threaded_mainloop_unlock(self->loop);

- goto fail;

- }

- if(!pa_channel_map_parse(&chanmap, mapname))

- {

- ERR("Failed to build channel map for %s\n", DevFmtChannelsString(device->FmtChans));

- pa_threaded_mainloop_unlock(self->loop);

- return ALC_FALSE;

- }

-

- self->spec.rate = device->Frequency;

- self->spec.channels = ChannelsFromDevFmt(device->FmtChans, device->AmbiOrder);

-

- if(pa_sample_spec_valid(&self->spec) == 0)

- {

- ERR("Invalid sample format\n");

- pa_threaded_mainloop_unlock(self->loop);

- goto fail;

- }

-

- if(!pa_channel_map_init_auto(&chanmap, self->spec.channels, PA_CHANNEL_MAP_WAVEEX))

- {

- ERR("Couldn't build map for channel count (%d)!\n", self->spec.channels);

- pa_threaded_mainloop_unlock(self->loop);

- goto fail;

- }

-

- samples = device->UpdateSize * device->NumUpdates;

- samples = maxu(samples, 100 * device->Frequency / 1000);

-

- self->attr.minreq = -1;

- self->attr.prebuf = -1;

- self->attr.maxlength = samples * pa_frame_size(&self->spec);

- self->attr.tlength = -1;

- self->attr.fragsize = minu(samples, 50*device->Frequency/1000) *

- pa_frame_size(&self->spec);

-

- flags |= PA_STREAM_START_CORKED|PA_STREAM_ADJUST_LATENCY;

- if(!GetConfigValueBool(NULL, "pulse", "allow-moves", 0))

- flags |= PA_STREAM_DONT_MOVE;

-

- TRACE("Connecting to \"%s\"\n", pulse_name ? pulse_name : "(default)");

- self->stream = ALCpulseCapture_connectStream(pulse_name,

- self->loop, self->context, flags, &self->attr, &self->spec, &chanmap

- );

- if(!self->stream)

- {

- pa_threaded_mainloop_unlock(self->loop);

- goto fail;

- }

- pa_stream_set_moved_callback(self->stream, ALCpulseCapture_streamMovedCallback, self);

- pa_stream_set_state_callback(self->stream, ALCpulseCapture_streamStateCallback, self);

-

- alstr_copy_cstr(&self->device_name, pa_stream_get_device_name(self->stream));

- if(alstr_empty(device->DeviceName))

- {

- pa_operation *o = pa_context_get_source_info_by_name(

- self->context, alstr_get_cstr(self->device_name),

- ALCpulseCapture_sourceNameCallback, self

- );

- wait_for_operation(o, self->loop);

- }

-

- pa_threaded_mainloop_unlock(self->loop);

- return ALC_NO_ERROR;

-

-fail:

- pulse_close(self->loop, self->context, self->stream);

- self->loop = NULL;

- self->context = NULL;

- self->stream = NULL;

-

- return ALC_INVALID_VALUE;

-}

-

-static ALCboolean ALCpulseCapture_start(ALCpulseCapture *self)

-{

- pa_operation *o;

- pa_threaded_mainloop_lock(self->loop);

- o = pa_stream_cork(self->stream, 0, stream_success_callback, self->loop);

- wait_for_operation(o, self->loop);

- pa_threaded_mainloop_unlock(self->loop);

- return ALC_TRUE;

-}

-

-static void ALCpulseCapture_stop(ALCpulseCapture *self)

-{

- pa_operation *o;

- pa_threaded_mainloop_lock(self->loop);

- o = pa_stream_cork(self->stream, 1, stream_success_callback, self->loop);

- wait_for_operation(o, self->loop);

- pa_threaded_mainloop_unlock(self->loop);

-}

-

-static ALCenum ALCpulseCapture_captureSamples(ALCpulseCapture *self, ALCvoid *buffer, ALCuint samples)

-{

- ALCdevice *device = STATIC_CAST(ALCbackend,self)->mDevice;

- ALCuint todo = samples * pa_frame_size(&self->spec);

-

- /* Capture is done in fragment-sized chunks, so we loop until we get all

- * that's available */

- self->last_readable -= todo;

- pa_threaded_mainloop_lock(self->loop);

- while(todo > 0)

- {

- size_t rem = todo;

-

- if(self->cap_len == 0)

- {

- pa_stream_state_t state;

-

- state = pa_stream_get_state(self->stream);

- if(!PA_STREAM_IS_GOOD(state))

- {

- aluHandleDisconnect(device, "Bad capture state: %u", state);

- break;

- }

- if(pa_stream_peek(self->stream, &self->cap_store, &self->cap_len) < 0)

- {

- ERR("pa_stream_peek() failed: %s\n",

- pa_strerror(pa_context_errno(self->context)));

- aluHandleDisconnect(device, "Failed retrieving capture samples: %s",

- pa_strerror(pa_context_errno(self->context)));

- break;

- }

- self->cap_remain = self->cap_len;

- }

- if(rem > self->cap_remain)

- rem = self->cap_remain;

-

- memcpy(buffer, self->cap_store, rem);

-

- buffer = (ALbyte*)buffer + rem;

- todo -= rem;

-

- self->cap_store = (ALbyte*)self->cap_store + rem;

- self->cap_remain -= rem;

- if(self->cap_remain == 0)

- {

- pa_stream_drop(self->stream);

- self->cap_len = 0;

- }

- }

- pa_threaded_mainloop_unlock(self->loop);

- if(todo > 0)

- memset(buffer, ((device->FmtType==DevFmtUByte) ? 0x80 : 0), todo);

-

- return ALC_NO_ERROR;

-}

-

-static ALCuint ALCpulseCapture_availableSamples(ALCpulseCapture *self)

-{

- ALCdevice *device = STATIC_CAST(ALCbackend,self)->mDevice;

- size_t readable = self->cap_remain;

-

- if(ATOMIC_LOAD(&device->Connected, almemory_order_acquire))

- {

- ssize_t got;

- pa_threaded_mainloop_lock(self->loop);

- got = pa_stream_readable_size(self->stream);

- if(got < 0)

- {

- ERR("pa_stream_readable_size() failed: %s\n", pa_strerror(got));

- aluHandleDisconnect(device, "Failed getting readable size: %s", pa_strerror(got));

- }

- else if((size_t)got > self->cap_len)

- readable += got - self->cap_len;

- pa_threaded_mainloop_unlock(self->loop);

- }

-

- if(self->last_readable < readable)

- self->last_readable = readable;

- return self->last_readable / pa_frame_size(&self->spec);

-}

-

-

-static ClockLatency ALCpulseCapture_getClockLatency(ALCpulseCapture *self)

-{

- ClockLatency ret;

- pa_usec_t latency;

- int neg, err;

-

- pa_threaded_mainloop_lock(self->loop);

- ret.ClockTime = GetDeviceClockTime(STATIC_CAST(ALCbackend,self)->mDevice);

- err = pa_stream_get_latency(self->stream, &latency, &neg);

- pa_threaded_mainloop_unlock(self->loop);

-

- if(UNLIKELY(err != 0))

- {

- ERR("Failed to get stream latency: 0x%x\n", err);

- latency = 0;

- neg = 0;

- }

- else if(UNLIKELY(neg))

- latency = 0;

- ret.Latency = (ALint64)minu64(latency, U64(0x7fffffffffffffff)/1000) * 1000;

-

- return ret;

-}

-

-

-static void ALCpulseCapture_lock(ALCpulseCapture *self)

-{

- pa_threaded_mainloop_lock(self->loop);

-}

-

-static void ALCpulseCapture_unlock(ALCpulseCapture *self)

-{

- pa_threaded_mainloop_unlock(self->loop);

-}

-

-

-typedef struct ALCpulseBackendFactory {

- DERIVE_FROM_TYPE(ALCbackendFactory);

-} ALCpulseBackendFactory;

-#define ALCPULSEBACKENDFACTORY_INITIALIZER { { GET_VTABLE2(ALCpulseBackendFactory, ALCbackendFactory) } }

-

-static ALCboolean ALCpulseBackendFactory_init(ALCpulseBackendFactory *self);

-static void ALCpulseBackendFactory_deinit(ALCpulseBackendFactory *self);

-static ALCboolean ALCpulseBackendFactory_querySupport(ALCpulseBackendFactory *self, ALCbackend_Type type);

-static void ALCpulseBackendFactory_probe(ALCpulseBackendFactory *self, enum DevProbe type, al_string *outnames);

-static ALCbackend* ALCpulseBackendFactory_createBackend(ALCpulseBackendFactory *self, ALCdevice *device, ALCbackend_Type type);

-DEFINE_ALCBACKENDFACTORY_VTABLE(ALCpulseBackendFactory);

-

-

-static ALCboolean ALCpulseBackendFactory_init(ALCpulseBackendFactory* UNUSED(self))

-{

- ALCboolean ret = ALC_FALSE;

-

- VECTOR_INIT(PlaybackDevices);

- VECTOR_INIT(CaptureDevices);

-

- if(pulse_load())

- {

- pa_threaded_mainloop *loop;

-

- pulse_ctx_flags = 0;

- if(!GetConfigValueBool(NULL, "pulse", "spawn-server", 1))

- pulse_ctx_flags |= PA_CONTEXT_NOAUTOSPAWN;

-

- if((loop=pa_threaded_mainloop_new()) &&

- pa_threaded_mainloop_start(loop) >= 0)

- {

- pa_context *context;

-

- pa_threaded_mainloop_lock(loop);

- context = connect_context(loop, AL_TRUE);

- if(context)

- {

- ret = ALC_TRUE;

-

- /* Some libraries (Phonon, Qt) set some pulseaudio properties

- * through environment variables, which causes all streams in

- * the process to inherit them. This attempts to filter those

- * properties out by setting them to 0-length data. */

- prop_filter = pa_proplist_new();

- pa_proplist_set(prop_filter, PA_PROP_MEDIA_ROLE, NULL, 0);

- pa_proplist_set(prop_filter, "phonon.streamid", NULL, 0);

-

- pa_context_disconnect(context);

- pa_context_unref(context);

- }

- pa_threaded_mainloop_unlock(loop);

- pa_threaded_mainloop_stop(loop);

- }

- if(loop)

- pa_threaded_mainloop_free(loop);

- }

-

- return ret;

-}

-

-static void ALCpulseBackendFactory_deinit(ALCpulseBackendFactory* UNUSED(self))

-{

- clear_devlist(&PlaybackDevices);

- VECTOR_DEINIT(PlaybackDevices);

-

- clear_devlist(&CaptureDevices);

- VECTOR_DEINIT(CaptureDevices);

-

- if(prop_filter)

- pa_proplist_free(prop_filter);

- prop_filter = NULL;

-

- /* PulseAudio doesn't like being CloseLib'd sometimes */

-}

-

-static ALCboolean ALCpulseBackendFactory_querySupport(ALCpulseBackendFactory* UNUSED(self), ALCbackend_Type type)

-{

- if(type == ALCbackend_Playback || type == ALCbackend_Capture)

- return ALC_TRUE;

- return ALC_FALSE;

-}

-

-static void ALCpulseBackendFactory_probe(ALCpulseBackendFactory* UNUSED(self), enum DevProbe type, al_string *outnames)

-{

- switch(type)

- {

-#define APPEND_OUTNAME(e) do { \

- if(!alstr_empty((e)->name)) \

- alstr_append_range(outnames, VECTOR_BEGIN((e)->name), \

- VECTOR_END((e)->name)+1); \

-} while(0)

- case ALL_DEVICE_PROBE:

- ALCpulsePlayback_probeDevices();

- VECTOR_FOR_EACH(const DevMap, PlaybackDevices, APPEND_OUTNAME);

- break;

-

- case CAPTURE_DEVICE_PROBE:

- ALCpulseCapture_probeDevices();

- VECTOR_FOR_EACH(const DevMap, CaptureDevices, APPEND_OUTNAME);

- break;

-#undef APPEND_OUTNAME

- }

-}

-

-static ALCbackend* ALCpulseBackendFactory_createBackend(ALCpulseBackendFactory* UNUSED(self), ALCdevice *device, ALCbackend_Type type)

-{

- if(type == ALCbackend_Playback)

- {

- ALCpulsePlayback *backend;

- NEW_OBJ(backend, ALCpulsePlayback)(device);

- if(!backend) return NULL;

- return STATIC_CAST(ALCbackend, backend);

- }

- if(type == ALCbackend_Capture)

- {

- ALCpulseCapture *backend;

- NEW_OBJ(backend, ALCpulseCapture)(device);

- if(!backend) return NULL;

- return STATIC_CAST(ALCbackend, backend);

- }

-

- return NULL;

-}

-

-

-#else /* PA_API_VERSION == 12 */

-

-#warning "Unsupported API version, backend will be unavailable!"

-

-typedef struct ALCpulseBackendFactory {

- DERIVE_FROM_TYPE(ALCbackendFactory);

-} ALCpulseBackendFactory;

-#define ALCPULSEBACKENDFACTORY_INITIALIZER { { GET_VTABLE2(ALCpulseBackendFactory, ALCbackendFactory) } }

-

-static ALCboolean ALCpulseBackendFactory_init(ALCpulseBackendFactory* UNUSED(self))

-{

- return ALC_FALSE;

-}

-

-static void ALCpulseBackendFactory_deinit(ALCpulseBackendFactory* UNUSED(self))

-{

-}

-

-static ALCboolean ALCpulseBackendFactory_querySupport(ALCpulseBackendFactory* UNUSED(self), ALCbackend_Type UNUSED(type))

-{

- return ALC_FALSE;

-}

-

-static void ALCpulseBackendFactory_probe(ALCpulseBackendFactory* UNUSED(self), enum DevProbe UNUSED(type), al_string* UNUSED(outnames))

-{

-}

-

-static ALCbackend* ALCpulseBackendFactory_createBackend(ALCpulseBackendFactory* UNUSED(self), ALCdevice* UNUSED(device), ALCbackend_Type UNUSED(type))

-{

- return NULL;

-}

-

-DEFINE_ALCBACKENDFACTORY_VTABLE(ALCpulseBackendFactory);

-

-#endif /* PA_API_VERSION == 12 */

-

-ALCbackendFactory *ALCpulseBackendFactory_getFactory(void)

-{

- static ALCpulseBackendFactory factory = ALCPULSEBACKENDFACTORY_INITIALIZER;

- return STATIC_CAST(ALCbackendFactory, &factory);

-}