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|
/* $Id: DrvHostAudioPulseAudioStubs.cpp $ */
/** @file
* Stubs for libpulse.
*/
/*
* Copyright (C) 2006-2023 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* SPDX-License-Identifier: GPL-3.0-only
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#define LOG_GROUP LOG_GROUP_DRV_HOST_AUDIO
#include <iprt/assert.h>
#include <iprt/errcore.h>
#include <iprt/ldr.h>
#include <VBox/log.h>
#include <iprt/once.h>
#include <pulse/pulseaudio.h>
#include "DrvHostAudioPulseAudioStubs.h"
/*********************************************************************************************************************************
* Defined Constants And Macros *
*********************************************************************************************************************************/
#define VBOX_PULSE_LIB "libpulse.so.0"
#define PROXY_STUB(function, rettype, signature, shortsig) \
static rettype (*g_pfn_ ## function) signature; \
\
extern "C" rettype VBox_##function signature; \
rettype VBox_##function signature \
{ \
return g_pfn_ ## function shortsig; \
}
#define PROXY_STUB_VOID(function, signature, shortsig) \
static void (*g_pfn_ ## function) signature; \
\
extern "C" void VBox_##function signature; \
void VBox_##function signature \
{ \
g_pfn_ ## function shortsig; \
}
PROXY_STUB (pa_bytes_per_second, size_t,
(const pa_sample_spec *spec),
(spec))
PROXY_STUB (pa_bytes_to_usec, pa_usec_t,
(uint64_t l, const pa_sample_spec *spec),
(l, spec))
PROXY_STUB (pa_channel_map_init_auto, pa_channel_map*,
(pa_channel_map *m, unsigned channels, pa_channel_map_def_t def),
(m, channels, def))
PROXY_STUB (pa_context_connect, int,
(pa_context *c, const char *server, pa_context_flags_t flags,
const pa_spawn_api *api),
(c, server, flags, api))
PROXY_STUB_VOID(pa_context_disconnect,
(pa_context *c),
(c))
PROXY_STUB (pa_context_get_server_info, pa_operation*,
(pa_context *c, pa_server_info_cb_t cb, void *userdata),
(c, cb, userdata))
PROXY_STUB (pa_context_get_sink_info_by_name, pa_operation*,
(pa_context *c, const char *name, pa_sink_info_cb_t cb, void *userdata),
(c, name, cb, userdata))
PROXY_STUB (pa_context_get_sink_info_list, pa_operation *,
(pa_context *c, pa_sink_info_cb_t cb, void *userdata),
(c, cb, userdata))
PROXY_STUB (pa_context_get_source_info_by_name, pa_operation*,
(pa_context *c, const char *name, pa_source_info_cb_t cb, void *userdata),
(c, name, cb, userdata))
PROXY_STUB (pa_context_get_source_info_list, pa_operation *,
(pa_context *c, pa_source_info_cb_t cb, void *userdata),
(c, cb, userdata))
PROXY_STUB (pa_context_get_state, pa_context_state_t,
(pa_context *c),
(c))
PROXY_STUB_VOID(pa_context_unref,
(pa_context *c),
(c))
PROXY_STUB (pa_context_errno, int,
(pa_context *c),
(c))
PROXY_STUB (pa_context_new, pa_context*,
(pa_mainloop_api *mainloop, const char *name),
(mainloop, name))
PROXY_STUB_VOID(pa_context_set_state_callback,
(pa_context *c, pa_context_notify_cb_t cb, void *userdata),
(c, cb, userdata))
PROXY_STUB (pa_frame_size, size_t,
(const pa_sample_spec *spec),
(spec))
PROXY_STUB (pa_get_library_version, const char *, (void), ())
PROXY_STUB_VOID(pa_operation_unref,
(pa_operation *o),
(o))
PROXY_STUB (pa_operation_get_state, pa_operation_state_t,
(pa_operation *o),
(o))
PROXY_STUB_VOID(pa_operation_cancel,
(pa_operation *o),
(o))
PROXY_STUB (pa_rtclock_now, pa_usec_t,
(void),
())
PROXY_STUB (pa_sample_format_to_string, const char*,
(pa_sample_format_t f),
(f))
PROXY_STUB (pa_sample_spec_valid, int,
(const pa_sample_spec *spec),
(spec))
PROXY_STUB (pa_strerror, const char*,
(int error),
(error))
#if PA_PROTOCOL_VERSION >= 16
PROXY_STUB (pa_stream_connect_playback, int,
(pa_stream *s, const char *dev, const pa_buffer_attr *attr,
pa_stream_flags_t flags, const pa_cvolume *volume, pa_stream *sync_stream),
(s, dev, attr, flags, volume, sync_stream))
#else
PROXY_STUB (pa_stream_connect_playback, int,
(pa_stream *s, const char *dev, const pa_buffer_attr *attr,
pa_stream_flags_t flags, pa_cvolume *volume, pa_stream *sync_stream),
(s, dev, attr, flags, volume, sync_stream))
#endif
PROXY_STUB (pa_stream_connect_record, int,
(pa_stream *s, const char *dev, const pa_buffer_attr *attr,
pa_stream_flags_t flags),
(s, dev, attr, flags))
PROXY_STUB (pa_stream_disconnect, int,
(pa_stream *s),
(s))
PROXY_STUB (pa_stream_get_sample_spec, const pa_sample_spec*,
(pa_stream *s),
(s))
PROXY_STUB_VOID(pa_stream_set_latency_update_callback,
(pa_stream *p, pa_stream_notify_cb_t cb, void *userdata),
(p, cb, userdata))
PROXY_STUB (pa_stream_write, int,
(pa_stream *p, const void *data, size_t bytes, pa_free_cb_t free_cb,
int64_t offset, pa_seek_mode_t seek),
(p, data, bytes, free_cb, offset, seek))
PROXY_STUB_VOID(pa_stream_unref,
(pa_stream *s),
(s))
PROXY_STUB (pa_stream_get_state, pa_stream_state_t,
(pa_stream *p),
(p))
PROXY_STUB (pa_stream_get_latency, int,
(pa_stream *s, pa_usec_t *r_usec, int *negative),
(s, r_usec, negative))
PROXY_STUB (pa_stream_get_timing_info, pa_timing_info*,
(pa_stream *s),
(s))
PROXY_STUB (pa_stream_readable_size, size_t,
(pa_stream *p),
(p))
PROXY_STUB (pa_stream_set_buffer_attr, pa_operation *,
(pa_stream *s, const pa_buffer_attr *attr, pa_stream_success_cb_t cb, void *userdata),
(s, attr, cb, userdata))
PROXY_STUB_VOID(pa_stream_set_state_callback,
(pa_stream *s, pa_stream_notify_cb_t cb, void *userdata),
(s, cb, userdata))
PROXY_STUB_VOID(pa_stream_set_underflow_callback,
(pa_stream *s, pa_stream_notify_cb_t cb, void *userdata),
(s, cb, userdata))
PROXY_STUB_VOID(pa_stream_set_overflow_callback,
(pa_stream *s, pa_stream_notify_cb_t cb, void *userdata),
(s, cb, userdata))
PROXY_STUB_VOID(pa_stream_set_write_callback,
(pa_stream *s, pa_stream_request_cb_t cb, void *userdata),
(s, cb, userdata))
PROXY_STUB (pa_stream_flush, pa_operation*,
(pa_stream *s, pa_stream_success_cb_t cb, void *userdata),
(s, cb, userdata))
PROXY_STUB (pa_stream_drain, pa_operation*,
(pa_stream *s, pa_stream_success_cb_t cb, void *userdata),
(s, cb, userdata))
PROXY_STUB (pa_stream_trigger, pa_operation*,
(pa_stream *s, pa_stream_success_cb_t cb, void *userdata),
(s, cb, userdata))
PROXY_STUB (pa_stream_new, pa_stream*,
(pa_context *c, const char *name, const pa_sample_spec *ss,
const pa_channel_map *map),
(c, name, ss, map))
PROXY_STUB (pa_stream_get_buffer_attr, const pa_buffer_attr*,
(pa_stream *s),
(s))
PROXY_STUB (pa_stream_peek, int,
(pa_stream *p, const void **data, size_t *bytes),
(p, data, bytes))
PROXY_STUB (pa_stream_cork, pa_operation*,
(pa_stream *s, int b, pa_stream_success_cb_t cb, void *userdata),
(s, b, cb, userdata))
PROXY_STUB (pa_stream_drop, int,
(pa_stream *p),
(p))
PROXY_STUB (pa_stream_writable_size, size_t,
(pa_stream *p),
(p))
PROXY_STUB_VOID(pa_threaded_mainloop_stop,
(pa_threaded_mainloop *m),
(m))
PROXY_STUB (pa_threaded_mainloop_get_api, pa_mainloop_api*,
(pa_threaded_mainloop *m),
(m))
PROXY_STUB_VOID(pa_threaded_mainloop_free,
(pa_threaded_mainloop* m),
(m))
PROXY_STUB_VOID(pa_threaded_mainloop_signal,
(pa_threaded_mainloop *m, int wait_for_accept),
(m, wait_for_accept))
PROXY_STUB_VOID(pa_threaded_mainloop_unlock,
(pa_threaded_mainloop *m),
(m))
PROXY_STUB (pa_threaded_mainloop_new, pa_threaded_mainloop *,
(void),
())
PROXY_STUB_VOID(pa_threaded_mainloop_wait,
(pa_threaded_mainloop *m),
(m))
PROXY_STUB (pa_threaded_mainloop_start, int,
(pa_threaded_mainloop *m),
(m))
PROXY_STUB_VOID(pa_threaded_mainloop_lock,
(pa_threaded_mainloop *m),
(m))
PROXY_STUB (pa_usec_to_bytes, size_t,
(pa_usec_t t, const pa_sample_spec *spec),
(t, spec))
#define FUNC_ENTRY(function) { #function , (void (**)(void)) & g_pfn_ ## function }
static struct
{
const char *pszName;
void (**pfn)(void);
} const g_aImportedFunctions[] =
{
FUNC_ENTRY(pa_bytes_per_second),
FUNC_ENTRY(pa_bytes_to_usec),
FUNC_ENTRY(pa_channel_map_init_auto),
FUNC_ENTRY(pa_context_connect),
FUNC_ENTRY(pa_context_disconnect),
FUNC_ENTRY(pa_context_get_server_info),
FUNC_ENTRY(pa_context_get_sink_info_by_name),
FUNC_ENTRY(pa_context_get_sink_info_list),
FUNC_ENTRY(pa_context_get_source_info_by_name),
FUNC_ENTRY(pa_context_get_source_info_list),
FUNC_ENTRY(pa_context_get_state),
FUNC_ENTRY(pa_context_unref),
FUNC_ENTRY(pa_context_errno),
FUNC_ENTRY(pa_context_new),
FUNC_ENTRY(pa_context_set_state_callback),
FUNC_ENTRY(pa_frame_size),
FUNC_ENTRY(pa_get_library_version),
FUNC_ENTRY(pa_operation_unref),
FUNC_ENTRY(pa_operation_get_state),
FUNC_ENTRY(pa_operation_cancel),
FUNC_ENTRY(pa_rtclock_now),
FUNC_ENTRY(pa_sample_format_to_string),
FUNC_ENTRY(pa_sample_spec_valid),
FUNC_ENTRY(pa_strerror),
FUNC_ENTRY(pa_stream_connect_playback),
FUNC_ENTRY(pa_stream_connect_record),
FUNC_ENTRY(pa_stream_disconnect),
FUNC_ENTRY(pa_stream_get_sample_spec),
FUNC_ENTRY(pa_stream_set_latency_update_callback),
FUNC_ENTRY(pa_stream_write),
FUNC_ENTRY(pa_stream_unref),
FUNC_ENTRY(pa_stream_get_state),
FUNC_ENTRY(pa_stream_get_latency),
FUNC_ENTRY(pa_stream_get_timing_info),
FUNC_ENTRY(pa_stream_readable_size),
FUNC_ENTRY(pa_stream_set_buffer_attr),
FUNC_ENTRY(pa_stream_set_state_callback),
FUNC_ENTRY(pa_stream_set_underflow_callback),
FUNC_ENTRY(pa_stream_set_overflow_callback),
FUNC_ENTRY(pa_stream_set_write_callback),
FUNC_ENTRY(pa_stream_flush),
FUNC_ENTRY(pa_stream_drain),
FUNC_ENTRY(pa_stream_trigger),
FUNC_ENTRY(pa_stream_new),
FUNC_ENTRY(pa_stream_get_buffer_attr),
FUNC_ENTRY(pa_stream_peek),
FUNC_ENTRY(pa_stream_cork),
FUNC_ENTRY(pa_stream_drop),
FUNC_ENTRY(pa_stream_writable_size),
FUNC_ENTRY(pa_threaded_mainloop_stop),
FUNC_ENTRY(pa_threaded_mainloop_get_api),
FUNC_ENTRY(pa_threaded_mainloop_free),
FUNC_ENTRY(pa_threaded_mainloop_signal),
FUNC_ENTRY(pa_threaded_mainloop_unlock),
FUNC_ENTRY(pa_threaded_mainloop_new),
FUNC_ENTRY(pa_threaded_mainloop_wait),
FUNC_ENTRY(pa_threaded_mainloop_start),
FUNC_ENTRY(pa_threaded_mainloop_lock),
FUNC_ENTRY(pa_usec_to_bytes)
};
#undef FUNC_ENTRY
/** Init once. */
static RTONCE g_PulseAudioLibInitOnce = RTONCE_INITIALIZER;
/** @callback_method_impl{FNRTONCE} */
static DECLCALLBACK(int32_t) drvHostAudioPulseLibInitOnce(void *pvUser)
{
RT_NOREF(pvUser);
LogFlowFunc(("\n"));
RTLDRMOD hMod = NIL_RTLDRMOD;
int rc = RTLdrLoadSystemEx(VBOX_PULSE_LIB, RTLDRLOAD_FLAGS_NO_UNLOAD, &hMod);
if (RT_SUCCESS(rc))
{
for (unsigned i = 0; i < RT_ELEMENTS(g_aImportedFunctions); i++)
{
rc = RTLdrGetSymbol(hMod, g_aImportedFunctions[i].pszName, (void **)g_aImportedFunctions[i].pfn);
if (RT_FAILURE(rc))
{
LogRelFunc(("Failed to resolve function #%u: '%s' (%Rrc)\n", i, g_aImportedFunctions[i].pszName, rc));
break;
}
}
RTLdrClose(hMod);
}
else
LogRelFunc(("Failed to load library %s: %Rrc\n", VBOX_PULSE_LIB, rc));
return rc;
}
/**
* Try to dynamically load the PulseAudio libraries.
*
* @returns VBox status code.
*/
int audioLoadPulseLib(void)
{
LogFlowFunc(("\n"));
return RTOnce(&g_PulseAudioLibInitOnce, drvHostAudioPulseLibInitOnce, NULL);
}
|
