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AuroraOpenALSoft/Alc/pulseaudio.c

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/**
* OpenAL cross platform audio library
* Copyright (C) 2009 by Konstantinos Natsakis <konstantinos.natsakis@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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
* Or go to http://www.gnu.org/copyleft/lgpl.html
*/
#include "config.h"
#include "alMain.h"
#ifdef HAVE_DLFCN_H
#include <dlfcn.h>
#endif
#include <pulse/pulseaudio.h>
#if PA_API_VERSION == 11
#define PA_STREAM_ADJUST_LATENCY 0x2000U
static inline int PA_STREAM_IS_GOOD(pa_stream_state_t x)
{
return (x == PA_STREAM_CREATING || x == PA_STREAM_READY);
}
static inline int PA_CONTEXT_IS_GOOD(pa_context_state_t x)
{
return (x == PA_CONTEXT_CONNECTING || x == PA_CONTEXT_AUTHORIZING ||
x == PA_CONTEXT_SETTING_NAME || x == PA_CONTEXT_READY);
}
#define PA_STREAM_IS_GOOD PA_STREAM_IS_GOOD
#define PA_CONTEXT_IS_GOOD PA_CONTEXT_IS_GOOD
#elif PA_API_VERSION != 12
#error Invalid PulseAudio API version
#endif
#ifndef PA_CHECK_VERSION
#define PA_CHECK_VERSION(major,minor,micro) \
((PA_MAJOR > (major)) || \
(PA_MAJOR == (major) && PA_MINOR > (minor)) || \
(PA_MAJOR == (major) && PA_MINOR == (minor) && PA_MICRO >= (micro)))
#endif
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_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_cork);
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_set_read_callback);
MAKE_FUNC(pa_stream_set_state_callback);
MAKE_FUNC(pa_stream_new);
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_operation_get_state);
MAKE_FUNC(pa_operation_unref);
#if PA_CHECK_VERSION(0,9,15)
MAKE_FUNC(pa_channel_map_superset);
MAKE_FUNC(pa_stream_set_buffer_attr_callback);
#endif
#if PA_CHECK_VERSION(0,9,16)
MAKE_FUNC(pa_stream_begin_write);
#endif
#undef MAKE_FUNC
#ifndef PATH_MAX
#define PATH_MAX 4096
#endif
typedef struct {
ALCuint samples;
ALCuint frame_size;
RingBuffer *ring;
pa_buffer_attr attr;
pa_sample_spec spec;
char path_name[PATH_MAX];
const char *context_name;
const char *stream_name;
pa_threaded_mainloop *loop;
pa_stream *stream;
pa_context *context;
} pulse_data;
static const ALCchar pulse_device[] = "PulseAudio Software";
static const ALCchar pulse_capture_device[] = "PulseAudio Capture";
static pa_context_flags_t pulse_ctx_flags;
static volatile ALuint load_count;
void *pulse_load(void) //{{{
{
if(load_count == 0)
{
#ifdef _WIN32
pa_handle = LoadLibrary("libpulse-0.dll");
#define LOAD_FUNC(x) do { \
p##x = GetProcAddress(pa_handle, #x); \
if(!(p##x)) { \
AL_PRINT("Could not load %s from libpulse-0.dll\n", #x); \
FreeLibrary(pa_handle); \
pa_handle = NULL; \
return NULL; \
} \
} while(0)
#define LOAD_OPTIONAL_FUNC(x) do { \
p##x = GetProcAddress(pa_handle, #x); \
} while(0)
#elif defined (HAVE_DLFCN_H)
const char *err;
#if defined(__APPLE__) && defined(__MACH__)
pa_handle = dlopen("libpulse.0.dylib", RTLD_NOW);
#else
pa_handle = dlopen("libpulse.so.0", RTLD_NOW);
#endif
dlerror();
#define LOAD_FUNC(x) do { \
p##x = dlsym(pa_handle, #x); \
if((err=dlerror()) != NULL) { \
AL_PRINT("Could not load %s from libpulse: %s\n", #x, err); \
dlclose(pa_handle); \
pa_handle = NULL; \
return NULL; \
} \
} while(0)
#define LOAD_OPTIONAL_FUNC(x) do { \
p##x = dlsym(pa_handle, #x); \
if((err=dlerror()) != NULL) { \
p##x = NULL; \
} \
} while(0)
#else
pa_handle = (void*)0xDEADBEEF;
#define LOAD_FUNC(x) p##x = (x)
#define LOAD_OPTIONAL_FUNC(x) p##x = (x)
#endif
if(!pa_handle)
return NULL;
LOAD_FUNC(pa_context_unref);
LOAD_FUNC(pa_sample_spec_valid);
LOAD_FUNC(pa_stream_drop);
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_cork);
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_set_read_callback);
LOAD_FUNC(pa_stream_set_state_callback);
LOAD_FUNC(pa_stream_new);
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_operation_get_state);
LOAD_FUNC(pa_operation_unref);
#if PA_CHECK_VERSION(0,9,15)
LOAD_OPTIONAL_FUNC(pa_channel_map_superset);
LOAD_OPTIONAL_FUNC(pa_stream_set_buffer_attr_callback);
#endif
#if PA_CHECK_VERSION(0,9,16)
LOAD_OPTIONAL_FUNC(pa_stream_begin_write);
#endif
#undef LOAD_OPTIONAL_FUNC
#undef LOAD_FUNC
}
++load_count;
return pa_handle;
} //}}}
void pulse_unload(void) //{{{
{
if(load_count == 0 || --load_count > 0)
return;
#ifdef _WIN32
FreeLibrary(pa_handle);
#elif defined (HAVE_DLFCN_H)
dlclose(pa_handle);
#endif
pa_handle = NULL;
} //}}}
// PulseAudio Event Callbacks //{{{
static void context_state_callback(pa_context *context, void *pdata) //{{{
{
ALCdevice *Device = pdata;
pulse_data *data = Device->ExtraData;
pa_context_state_t state;
state = ppa_context_get_state(context);
if(state == PA_CONTEXT_READY || !PA_CONTEXT_IS_GOOD(state))
ppa_threaded_mainloop_signal(data->loop, 0);
}//}}}
static void stream_state_callback(pa_stream *stream, void *pdata) //{{{
{
ALCdevice *Device = pdata;
pulse_data *data = Device->ExtraData;
pa_stream_state_t state;
state = ppa_stream_get_state(stream);
if(state == PA_STREAM_READY || !PA_STREAM_IS_GOOD(state))
ppa_threaded_mainloop_signal(data->loop, 0);
}//}}}
static void stream_buffer_attr_callback(pa_stream *stream, void *pdata) //{{{
{
ALCdevice *Device = pdata;
pulse_data *data = Device->ExtraData;
SuspendContext(NULL);
data->attr = *(ppa_stream_get_buffer_attr(stream));
Device->UpdateSize = data->attr.tlength/data->frame_size;
Device->NumUpdates = 1;
ProcessContext(NULL);
}//}}}
static void context_state_callback2(pa_context *context, void *pdata) //{{{
{
ALCdevice *Device = pdata;
pulse_data *data = Device->ExtraData;
if(ppa_context_get_state(context) == PA_CONTEXT_FAILED)
{
AL_PRINT("Received context failure!\n");
aluHandleDisconnect(Device);
}
ppa_threaded_mainloop_signal(data->loop, 0);
}//}}}
static void stream_state_callback2(pa_stream *stream, void *pdata) //{{{
{
ALCdevice *Device = pdata;
pulse_data *data = Device->ExtraData;
if(ppa_stream_get_state(stream) == PA_STREAM_FAILED)
{
AL_PRINT("Received stream failure!\n");
aluHandleDisconnect(Device);
}
ppa_threaded_mainloop_signal(data->loop, 0);
}//}}}
static void stream_success_callback(pa_stream *stream, int success, void *pdata) //{{{
{
ALCdevice *Device = pdata;
pulse_data *data = Device->ExtraData;
(void)stream;
(void)success;
ppa_threaded_mainloop_signal(data->loop, 0);
}//}}}
static void server_info_callback(pa_context *context, const pa_server_info *info, void *pdata) //{{{
{
struct {
pa_threaded_mainloop *loop;
char *name;
} *data = pdata;
(void)context;
data->name = strdup(info->default_sink_name);
ppa_threaded_mainloop_signal(data->loop, 0);
}//}}}
static void sink_info_callback(pa_context *context, const pa_sink_info *info, int eol, void *pdata) //{{{
{
ALCdevice *device = pdata;
pulse_data *data = device->ExtraData;
char chanmap_str[256] = "";
const struct {
const char *str;
ALenum format;
} chanmaps[] = {
{ "front-left,front-right,front-center,lfe,rear-left,rear-right,side-left,side-right",
AL_FORMAT_71CHN32 },
{ "front-left,front-right,front-center,lfe,rear-center,side-left,side-right",
AL_FORMAT_61CHN32 },
{ "front-left,front-right,front-center,lfe,rear-left,rear-right",
AL_FORMAT_51CHN32 },
{ "front-left,front-right,rear-left,rear-right", AL_FORMAT_QUAD32 },
{ "front-left,front-right", AL_FORMAT_STEREO_FLOAT32 },
{ "mono", AL_FORMAT_MONO_FLOAT32 },
{ NULL, 0 }
};
int i;
(void)context;
if(eol)
{
ppa_threaded_mainloop_signal(data->loop, 0);
return;
}
for(i = 0;chanmaps[i].str;i++)
{
pa_channel_map map;
if(!ppa_channel_map_parse(&map, chanmaps[i].str))
continue;
if(ppa_channel_map_equal(&info->channel_map, &map)
#if PA_CHECK_VERSION(0,9,15)
|| (ppa_channel_map_superset &&
ppa_channel_map_superset(&info->channel_map, &map))
#endif
)
{
device->Format = chanmaps[i].format;
return;
}
}
ppa_channel_map_snprint(chanmap_str, sizeof(chanmap_str), &info->channel_map);
AL_PRINT("Failed to find format for channel map:\n %s\n", chanmap_str);
}//}}}
//}}}
// PulseAudio I/O Callbacks //{{{
static void stream_write_callback(pa_stream *stream, size_t len, void *pdata) //{{{
{
ALCdevice *Device = pdata;
pulse_data *data = Device->ExtraData;
while(len > 0)
{
size_t newlen = len;
void *buf;
pa_free_cb_t free_func = NULL;
#if PA_CHECK_VERSION(0,9,16)
if(!ppa_stream_begin_write ||
ppa_stream_begin_write(stream, &buf, &newlen) < 0)
#endif
{
buf = ppa_xmalloc(newlen);
free_func = ppa_xfree;
}
aluMixData(Device, buf, newlen/data->frame_size);
ppa_stream_write(stream, buf, newlen, free_func, 0, PA_SEEK_RELATIVE);
len -= newlen;
}
} //}}}
//}}}
static ALCboolean pulse_open(ALCdevice *device, const ALCchar *device_name) //{{{
{
pulse_data *data = ppa_xmalloc(sizeof(pulse_data));
pa_context_state_t state;
memset(data, 0, sizeof(*data));
if(ppa_get_binary_name(data->path_name, sizeof(data->path_name)))
data->context_name = ppa_path_get_filename(data->path_name);
else
data->context_name = "OpenAL Soft";
if(!(data->loop = ppa_threaded_mainloop_new()))
{
AL_PRINT("pa_threaded_mainloop_new() failed!\n");
goto out;
}
if(ppa_threaded_mainloop_start(data->loop) < 0)
{
AL_PRINT("pa_threaded_mainloop_start() failed\n");
goto out;
}
ppa_threaded_mainloop_lock(data->loop);
device->ExtraData = data;
data->context = ppa_context_new(ppa_threaded_mainloop_get_api(data->loop), data->context_name);
if(!data->context)
{
AL_PRINT("pa_context_new() failed\n");
ppa_threaded_mainloop_unlock(data->loop);
goto out;
}
ppa_context_set_state_callback(data->context, context_state_callback, device);
if(ppa_context_connect(data->context, NULL, pulse_ctx_flags, NULL) < 0)
{
AL_PRINT("Context did not connect: %s\n",
ppa_strerror(ppa_context_errno(data->context)));
ppa_context_unref(data->context);
data->context = NULL;
ppa_threaded_mainloop_unlock(data->loop);
goto out;
}
while((state=ppa_context_get_state(data->context)) != PA_CONTEXT_READY)
{
if(!PA_CONTEXT_IS_GOOD(state))
{
int err = ppa_context_errno(data->context);
if(err != PA_ERR_CONNECTIONREFUSED)
AL_PRINT("Context did not get ready: %s\n", ppa_strerror(err));
ppa_context_unref(data->context);
data->context = NULL;
ppa_threaded_mainloop_unlock(data->loop);
goto out;
}
ppa_threaded_mainloop_wait(data->loop);
}
ppa_context_set_state_callback(data->context, context_state_callback2, device);
device->szDeviceName = strdup(device_name);
ppa_threaded_mainloop_unlock(data->loop);
return ALC_TRUE;
out:
if(data->loop)
{
ppa_threaded_mainloop_stop(data->loop);
ppa_threaded_mainloop_free(data->loop);
}
device->ExtraData = NULL;
ppa_xfree(data);
return ALC_FALSE;
} //}}}
static void pulse_close(ALCdevice *device) //{{{
{
pulse_data *data = device->ExtraData;
ppa_threaded_mainloop_lock(data->loop);
if(data->stream)
{
ppa_stream_disconnect(data->stream);
ppa_stream_unref(data->stream);
}
ppa_context_disconnect(data->context);
ppa_context_unref(data->context);
ppa_threaded_mainloop_unlock(data->loop);
ppa_threaded_mainloop_stop(data->loop);
ppa_threaded_mainloop_free(data->loop);
DestroyRingBuffer(data->ring);
device->ExtraData = NULL;
ppa_xfree(data);
} //}}}
//}}}
// OpenAL {{{
static ALCboolean pulse_open_playback(ALCdevice *device, const ALCchar *device_name) //{{{
{
if(!device_name)
device_name = pulse_device;
else if(strcmp(device_name, pulse_device) != 0)
return ALC_FALSE;
if(!pulse_load())
return ALC_FALSE;
if(pulse_open(device, device_name) != ALC_FALSE)
return ALC_TRUE;
pulse_unload();
return ALC_FALSE;
} //}}}
static void pulse_close_playback(ALCdevice *device) //{{{
{
pulse_close(device);
pulse_unload();
} //}}}
static ALCboolean pulse_reset_playback(ALCdevice *device) //{{{
{
pulse_data *data = device->ExtraData;
pa_stream_flags_t flags = 0;
pa_stream_state_t state;
pa_channel_map chanmap;
ppa_threaded_mainloop_lock(data->loop);
if(!ConfigValueExists(NULL, "format"))
{
pa_operation *o;
struct {
pa_threaded_mainloop *loop;
char *name;
} server_data;
server_data.loop = data->loop;
server_data.name = NULL;
o = ppa_context_get_server_info(data->context, server_info_callback, &server_data);
while(ppa_operation_get_state(o) == PA_OPERATION_RUNNING)
ppa_threaded_mainloop_wait(data->loop);
ppa_operation_unref(o);
if(server_data.name)
{
o = ppa_context_get_sink_info_by_name(data->context, server_data.name, sink_info_callback, device);
while(ppa_operation_get_state(o) == PA_OPERATION_RUNNING)
ppa_threaded_mainloop_wait(data->loop);
ppa_operation_unref(o);
free(server_data.name);
}
}
if(!ConfigValueExists(NULL, "frequency"))
flags |= PA_STREAM_FIX_RATE;
data->frame_size = aluBytesFromFormat(device->Format) *
aluChannelsFromFormat(device->Format);
data->stream_name = "Playback Stream";
data->attr.minreq = -1;
data->attr.prebuf = -1;
data->attr.maxlength = -1;
data->attr.fragsize = -1;
data->attr.tlength = GetConfigValueInt("pulse", "buffer-length", 2048);
if(data->attr.tlength == 0)
data->attr.tlength = device->UpdateSize * device->NumUpdates;
data->attr.tlength *= data->frame_size;
switch(aluBytesFromFormat(device->Format))
{
case 1:
data->spec.format = PA_SAMPLE_U8;
break;
case 2:
data->spec.format = PA_SAMPLE_S16NE;
break;
case 4:
data->spec.format = PA_SAMPLE_FLOAT32NE;
break;
default:
AL_PRINT("Unknown format: 0x%x\n", device->Format);
ppa_threaded_mainloop_unlock(data->loop);
return ALC_FALSE;
}
data->spec.rate = device->Frequency;
data->spec.channels = aluChannelsFromFormat(device->Format);
if(ppa_sample_spec_valid(&data->spec) == 0)
{
AL_PRINT("Invalid sample format\n");
ppa_threaded_mainloop_unlock(data->loop);
return ALC_FALSE;
}
if(!ppa_channel_map_init_auto(&chanmap, data->spec.channels, PA_CHANNEL_MAP_WAVEEX))
{
AL_PRINT("Couldn't build map for channel count (%d)!\n", data->spec.channels);
ppa_threaded_mainloop_unlock(data->loop);
return ALC_FALSE;
}
SetDefaultWFXChannelOrder(device);
data->stream = ppa_stream_new(data->context, data->stream_name, &data->spec, &chanmap);
if(!data->stream)
{
AL_PRINT("pa_stream_new() failed: %s\n",
ppa_strerror(ppa_context_errno(data->context)));
ppa_threaded_mainloop_unlock(data->loop);
return ALC_FALSE;
}
ppa_stream_set_state_callback(data->stream, stream_state_callback, device);
if(ppa_stream_connect_playback(data->stream, NULL, &data->attr, flags, NULL, NULL) < 0)
{
AL_PRINT("Stream did not connect: %s\n",
ppa_strerror(ppa_context_errno(data->context)));
ppa_stream_unref(data->stream);
data->stream = NULL;
ppa_threaded_mainloop_unlock(data->loop);
return ALC_FALSE;
}
while((state=ppa_stream_get_state(data->stream)) != PA_STREAM_READY)
{
if(!PA_STREAM_IS_GOOD(state))
{
AL_PRINT("Stream did not get ready: %s\n",
ppa_strerror(ppa_context_errno(data->context)));
ppa_stream_unref(data->stream);
data->stream = NULL;
ppa_threaded_mainloop_unlock(data->loop);
return ALC_FALSE;
}
ppa_threaded_mainloop_wait(data->loop);
}
ppa_stream_set_state_callback(data->stream, stream_state_callback2, device);
data->spec = *(ppa_stream_get_sample_spec(data->stream));
if(device->Frequency != data->spec.rate)
{
pa_operation *o;
/* Server updated our playback rate, so modify the buffer attribs
* accordingly. */
data->attr.tlength = (ALuint64)(data->attr.tlength/data->frame_size) *
data->spec.rate / device->Frequency * data->frame_size;
o = ppa_stream_set_buffer_attr(data->stream, &data->attr,
stream_success_callback, device);
while(ppa_operation_get_state(o) == PA_OPERATION_RUNNING)
ppa_threaded_mainloop_wait(data->loop);
ppa_operation_unref(o);
device->Frequency = data->spec.rate;
}
stream_buffer_attr_callback(data->stream, device);
#if PA_CHECK_VERSION(0,9,15)
if(ppa_stream_set_buffer_attr_callback)
ppa_stream_set_buffer_attr_callback(data->stream, stream_buffer_attr_callback, device);
#endif
stream_write_callback(data->stream, data->attr.tlength, device);
ppa_stream_set_write_callback(data->stream, stream_write_callback, device);
ppa_threaded_mainloop_unlock(data->loop);
return ALC_TRUE;
} //}}}
static void pulse_stop_playback(ALCdevice *device) //{{{
{
pulse_data *data = device->ExtraData;
if(!data->stream)
return;
ppa_threaded_mainloop_lock(data->loop);
ppa_stream_disconnect(data->stream);
ppa_stream_unref(data->stream);
data->stream = NULL;
ppa_threaded_mainloop_unlock(data->loop);
} //}}}
static ALCboolean pulse_open_capture(ALCdevice *device, const ALCchar *device_name) //{{{
{
pulse_data *data;
pa_stream_flags_t flags = 0;
pa_stream_state_t state;
pa_channel_map chanmap;
if(!device_name)
device_name = pulse_capture_device;
else if(strcmp(device_name, pulse_capture_device) != 0)
return ALC_FALSE;
if(!pulse_load())
return ALC_FALSE;
if(pulse_open(device, device_name) == ALC_FALSE)
{
pulse_unload();
return ALC_FALSE;
}
data = device->ExtraData;
ppa_threaded_mainloop_lock(data->loop);
data->samples = device->UpdateSize * device->NumUpdates;
data->frame_size = aluBytesFromFormat(device->Format) *
aluChannelsFromFormat(device->Format);
if(!(data->ring = CreateRingBuffer(data->frame_size, data->samples)))
{
ppa_threaded_mainloop_unlock(data->loop);
goto fail;
}
data->attr.minreq = -1;
data->attr.prebuf = -1;
data->attr.maxlength = data->frame_size * data->samples;
data->attr.tlength = -1;
data->attr.fragsize = min(data->frame_size * data->samples,
10 * device->Frequency / 1000);
data->stream_name = "Capture Stream";
data->spec.rate = device->Frequency;
data->spec.channels = aluChannelsFromFormat(device->Format);
switch(aluBytesFromFormat(device->Format))
{
case 1:
data->spec.format = PA_SAMPLE_U8;
break;
case 2:
data->spec.format = PA_SAMPLE_S16NE;
break;
case 4:
data->spec.format = PA_SAMPLE_FLOAT32NE;
break;
default:
AL_PRINT("Unknown format: 0x%x\n", device->Format);
ppa_threaded_mainloop_unlock(data->loop);
goto fail;
}
if(ppa_sample_spec_valid(&data->spec) == 0)
{
AL_PRINT("Invalid sample format\n");
ppa_threaded_mainloop_unlock(data->loop);
goto fail;
}
if(!ppa_channel_map_init_auto(&chanmap, data->spec.channels, PA_CHANNEL_MAP_WAVEEX))
{
AL_PRINT("Couldn't build map for channel count (%d)!\n", data->spec.channels);
ppa_threaded_mainloop_unlock(data->loop);
goto fail;
}
data->stream = ppa_stream_new(data->context, data->stream_name, &data->spec, &chanmap);
if(!data->stream)
{
AL_PRINT("pa_stream_new() failed: %s\n",
ppa_strerror(ppa_context_errno(data->context)));
ppa_threaded_mainloop_unlock(data->loop);
goto fail;
}
ppa_stream_set_state_callback(data->stream, stream_state_callback, device);
flags |= PA_STREAM_START_CORKED|PA_STREAM_ADJUST_LATENCY;
if(ppa_stream_connect_record(data->stream, NULL, &data->attr, flags) < 0)
{
AL_PRINT("Stream did not connect: %s\n",
ppa_strerror(ppa_context_errno(data->context)));
ppa_stream_unref(data->stream);
data->stream = NULL;
ppa_threaded_mainloop_unlock(data->loop);
goto fail;
}
while((state=ppa_stream_get_state(data->stream)) != PA_STREAM_READY)
{
if(!PA_STREAM_IS_GOOD(state))
{
AL_PRINT("Stream did not get ready: %s\n",
ppa_strerror(ppa_context_errno(data->context)));
ppa_stream_unref(data->stream);
data->stream = NULL;
ppa_threaded_mainloop_unlock(data->loop);
goto fail;
}
ppa_threaded_mainloop_wait(data->loop);
}
ppa_stream_set_state_callback(data->stream, stream_state_callback2, device);
ppa_threaded_mainloop_unlock(data->loop);
return ALC_TRUE;
fail:
pulse_close(device);
pulse_unload();
return ALC_FALSE;
} //}}}
static void pulse_close_capture(ALCdevice *device) //{{{
{
pulse_close(device);
pulse_unload();
} //}}}
static void pulse_start_capture(ALCdevice *device) //{{{
{
pulse_data *data = device->ExtraData;
pa_operation *o;
ppa_threaded_mainloop_lock(data->loop);
o = ppa_stream_cork(data->stream, 0, stream_success_callback, device);
while(ppa_operation_get_state(o) == PA_OPERATION_RUNNING)
ppa_threaded_mainloop_wait(data->loop);
ppa_operation_unref(o);
ppa_threaded_mainloop_unlock(data->loop);
} //}}}
static void pulse_stop_capture(ALCdevice *device) //{{{
{
pulse_data *data = device->ExtraData;
pa_operation *o;
ppa_threaded_mainloop_lock(data->loop);
o = ppa_stream_cork(data->stream, 1, stream_success_callback, device);
while(ppa_operation_get_state(o) == PA_OPERATION_RUNNING)
ppa_threaded_mainloop_wait(data->loop);
ppa_operation_unref(o);
ppa_threaded_mainloop_unlock(data->loop);
} //}}}
static void pulse_capture_samples(ALCdevice *device, ALCvoid *buffer, ALCuint samples) //{{{
{
pulse_data *data = device->ExtraData;
ALCuint available = RingBufferSize(data->ring);
const void *buf;
size_t length;
available *= data->frame_size;
samples *= data->frame_size;
ppa_threaded_mainloop_lock(data->loop);
if(available+ppa_stream_readable_size(data->stream) < samples)
{
ppa_threaded_mainloop_unlock(data->loop);
alcSetError(device, ALC_INVALID_VALUE);
return;
}
available = min(available, samples);
if(available > 0)
{
ReadRingBuffer(data->ring, buffer, available/data->frame_size);
buffer = (ALubyte*)buffer + available;
samples -= available;
}
/* Capture is done in fragment-sized chunks, so we loop until we get all
* that's requested */
while(samples > 0)
{
if(ppa_stream_peek(data->stream, &buf, &length) < 0)
{
AL_PRINT("pa_stream_peek() failed: %s\n",
ppa_strerror(ppa_context_errno(data->context)));
break;
}
available = min(length, samples);
memcpy(buffer, buf, available);
buffer = (ALubyte*)buffer + available;
buf = (const ALubyte*)buf + available;
samples -= available;
length -= available;
/* Any unread data in the fragment will be lost, so save it */
length /= data->frame_size;
if(length > 0)
{
if(length > data->samples)
length = data->samples;
WriteRingBuffer(data->ring, buf, length);
}
ppa_stream_drop(data->stream);
}
ppa_threaded_mainloop_unlock(data->loop);
} //}}}
static ALCuint pulse_available_samples(ALCdevice *device) //{{{
{
pulse_data *data = device->ExtraData;
ALCuint ret;
ppa_threaded_mainloop_lock(data->loop);
ret = RingBufferSize(data->ring);
ret += ppa_stream_readable_size(data->stream)/data->frame_size;
ppa_threaded_mainloop_unlock(data->loop);
return ret;
} //}}}
BackendFuncs pulse_funcs = { //{{{
pulse_open_playback,
pulse_close_playback,
pulse_reset_playback,
pulse_stop_playback,
pulse_open_capture,
pulse_close_capture,
pulse_start_capture,
pulse_stop_capture,
pulse_capture_samples,
pulse_available_samples
}; //}}}
void alc_pulse_init(BackendFuncs *func_list) //{{{
{
*func_list = pulse_funcs;
pulse_ctx_flags = 0;
if(!GetConfigValueBool("pulse", "spawn-server", 0))
pulse_ctx_flags |= PA_CONTEXT_NOAUTOSPAWN;
} //}}}
void alc_pulse_deinit(void) //{{{
{
} //}}}
void alc_pulse_probe(int type) //{{{
{
if(!pulse_load()) return;
if(type == DEVICE_PROBE)
AppendDeviceList(pulse_device);
else if(type == ALL_DEVICE_PROBE)
AppendAllDeviceList(pulse_device);
else if(type == CAPTURE_DEVICE_PROBE)
AppendCaptureDeviceList(pulse_capture_device);
pulse_unload();
} //}}}
//}}}
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