mirror of
https://github.com/danog/libtgvoip.git
synced 2024-11-27 04:34:42 +01:00
313 lines
9.7 KiB
C++
313 lines
9.7 KiB
C++
//
|
|
// libtgvoip is free and unencumbered public domain software.
|
|
// For more information, see http://unlicense.org or the UNLICENSE file
|
|
// you should have received with this source code distribution.
|
|
//
|
|
|
|
|
|
#include <assert.h>
|
|
#include <dlfcn.h>
|
|
#include <unistd.h>
|
|
#include "AudioOutputPulse.h"
|
|
#include "../../logging.h"
|
|
#include "../../VoIPController.h"
|
|
|
|
#define BUFFER_SIZE 960
|
|
#define CHECK_ERROR(res, msg) if(res!=0){LOGE(msg "failed: %s", pa_strerror(res)); failed=true; return;}
|
|
#define CHECK_DL_ERROR(res, msg) if(!res){LOGE(msg ": %s", dlerror()); failed=true; return;}
|
|
#define LOAD_DL_FUNCTION(name) {_import_##name=(typeof(_import_##name))dlsym(lib, #name); CHECK_DL_ERROR(_import_##name, "Error getting entry point for " #name);}
|
|
|
|
#define pa_threaded_mainloop_new _import_pa_threaded_mainloop_new
|
|
#define pa_threaded_mainloop_get_api _import_pa_threaded_mainloop_get_api
|
|
#define pa_context_new _import_pa_context_new
|
|
#define pa_context_set_state_callback _import_pa_context_set_state_callback
|
|
#define pa_threaded_mainloop_lock _import_pa_threaded_mainloop_lock
|
|
#define pa_threaded_mainloop_unlock _import_pa_threaded_mainloop_unlock
|
|
#define pa_threaded_mainloop_start _import_pa_threaded_mainloop_start
|
|
#define pa_context_connect _import_pa_context_connect
|
|
#define pa_context_get_state _import_pa_context_get_state
|
|
#define pa_threaded_mainloop_wait _import_pa_threaded_mainloop_wait
|
|
#define pa_stream_new _import_pa_stream_new
|
|
#define pa_stream_set_state_callback _import_pa_stream_set_state_callback
|
|
#define pa_stream_set_write_callback _import_pa_stream_set_write_callback
|
|
#define pa_stream_connect_playback _import_pa_stream_connect_playback
|
|
#define pa_operation_unref _import_pa_operation_unref
|
|
#define pa_stream_cork _import_pa_stream_cork
|
|
#define pa_threaded_mainloop_stop _import_pa_threaded_mainloop_stop
|
|
#define pa_stream_disconnect _import_pa_stream_disconnect
|
|
#define pa_stream_unref _import_pa_stream_unref
|
|
#define pa_context_disconnect _import_pa_context_disconnect
|
|
#define pa_context_unref _import_pa_context_unref
|
|
#define pa_threaded_mainloop_free _import_pa_threaded_mainloop_free
|
|
#define pa_threaded_mainloop_signal _import_pa_threaded_mainloop_signal
|
|
#define pa_stream_begin_write _import_pa_stream_begin_write
|
|
#define pa_stream_write _import_pa_stream_write
|
|
#define pa_strerror _import_pa_strerror
|
|
#define pa_stream_get_state _import_pa_stream_get_state
|
|
|
|
using namespace tgvoip::audio;
|
|
|
|
AudioOutputPulse::AudioOutputPulse(std::string devID){
|
|
isPlaying=false;
|
|
isConnected=false;
|
|
|
|
mainloop=NULL;
|
|
mainloopApi=NULL;
|
|
context=NULL;
|
|
stream=NULL;
|
|
remainingDataSize=0;
|
|
|
|
lib=dlopen("libpulse.so.0", RTLD_LAZY);
|
|
if(!lib)
|
|
lib=dlopen("libpulse.so", RTLD_LAZY);
|
|
if(!lib){
|
|
LOGE("Error loading libpulse: %s", dlerror());
|
|
failed=true;
|
|
return;
|
|
}
|
|
|
|
LOAD_DL_FUNCTION(pa_threaded_mainloop_new);
|
|
LOAD_DL_FUNCTION(pa_threaded_mainloop_get_api);
|
|
LOAD_DL_FUNCTION(pa_context_new);
|
|
LOAD_DL_FUNCTION(pa_context_set_state_callback);
|
|
LOAD_DL_FUNCTION(pa_threaded_mainloop_lock);
|
|
LOAD_DL_FUNCTION(pa_threaded_mainloop_unlock);
|
|
LOAD_DL_FUNCTION(pa_threaded_mainloop_start);
|
|
LOAD_DL_FUNCTION(pa_context_connect);
|
|
LOAD_DL_FUNCTION(pa_context_get_state);
|
|
LOAD_DL_FUNCTION(pa_threaded_mainloop_wait);
|
|
LOAD_DL_FUNCTION(pa_stream_new);
|
|
LOAD_DL_FUNCTION(pa_stream_set_state_callback);
|
|
LOAD_DL_FUNCTION(pa_stream_set_write_callback);
|
|
LOAD_DL_FUNCTION(pa_stream_connect_playback);
|
|
LOAD_DL_FUNCTION(pa_operation_unref);
|
|
LOAD_DL_FUNCTION(pa_stream_cork);
|
|
LOAD_DL_FUNCTION(pa_threaded_mainloop_stop);
|
|
LOAD_DL_FUNCTION(pa_stream_disconnect);
|
|
LOAD_DL_FUNCTION(pa_stream_unref);
|
|
LOAD_DL_FUNCTION(pa_context_disconnect);
|
|
LOAD_DL_FUNCTION(pa_context_unref);
|
|
LOAD_DL_FUNCTION(pa_threaded_mainloop_free);
|
|
LOAD_DL_FUNCTION(pa_threaded_mainloop_signal);
|
|
LOAD_DL_FUNCTION(pa_stream_begin_write);
|
|
LOAD_DL_FUNCTION(pa_stream_write);
|
|
LOAD_DL_FUNCTION(pa_stream_get_state);
|
|
LOAD_DL_FUNCTION(pa_strerror);
|
|
|
|
mainloop=pa_threaded_mainloop_new();
|
|
if(!mainloop){
|
|
LOGE("Error initializing PulseAudio (pa_threaded_mainloop_new)");
|
|
failed=true;
|
|
return;
|
|
}
|
|
mainloopApi=pa_threaded_mainloop_get_api(mainloop);
|
|
char exePath[MAXPATHLEN];
|
|
char exeName[MAXPATHLEN];
|
|
ssize_t lres=readlink("/proc/self/exe", exePath, sizeof(exePath));
|
|
if(lres==-1)
|
|
lres=readlink("/proc/curproc/file", exePath, sizeof(exePath));
|
|
if(lres==-1)
|
|
lres=readlink("/proc/curproc/exe", exePath, sizeof(exePath));
|
|
if(lres>0){
|
|
strcpy(exeName, basename(exePath));
|
|
}else{
|
|
snprintf(exeName, sizeof(exeName), "Process %d", getpid());
|
|
}
|
|
context=pa_context_new(mainloopApi, exeName);
|
|
if(!context){
|
|
LOGE("Error initializing PulseAudio (pa_context_new)");
|
|
failed=true;
|
|
return;
|
|
}
|
|
pa_context_set_state_callback(context, AudioOutputPulse::ContextStateCallback, this);
|
|
pa_threaded_mainloop_lock(mainloop);
|
|
int err=pa_threaded_mainloop_start(mainloop);
|
|
CHECK_ERROR(err, "pa_threaded_mainloop_start");
|
|
|
|
err=pa_context_connect(context, NULL, PA_CONTEXT_NOAUTOSPAWN, NULL);
|
|
CHECK_ERROR(err, "pa_context_connect");
|
|
|
|
while(true){
|
|
pa_context_state_t contextState=pa_context_get_state(context);
|
|
if(!PA_CONTEXT_IS_GOOD(contextState)){
|
|
LOGE("Error initializing PulseAudio (PA_CONTEXT_IS_GOOD)");
|
|
failed=true;
|
|
return;
|
|
}
|
|
if(contextState==PA_CONTEXT_READY)
|
|
break;
|
|
pa_threaded_mainloop_wait(mainloop);
|
|
}
|
|
|
|
pa_sample_spec sample_specifications{
|
|
.format=PA_SAMPLE_S16LE,
|
|
.rate=48000,
|
|
.channels=1
|
|
};
|
|
|
|
stream=pa_stream_new(context, "libtgvoip playback", &sample_specifications, NULL);
|
|
if(!stream){
|
|
LOGE("Error initializing PulseAudio (pa_stream_new)");
|
|
failed=true;
|
|
return;
|
|
}
|
|
pa_stream_set_state_callback(stream, AudioOutputPulse::StreamStateCallback, this);
|
|
pa_stream_set_write_callback(stream, AudioOutputPulse::StreamWriteCallback, this);
|
|
|
|
SetCurrentDevice(devID);
|
|
}
|
|
|
|
AudioOutputPulse::~AudioOutputPulse(){
|
|
if(mainloop)
|
|
pa_threaded_mainloop_stop(mainloop);
|
|
if(stream){
|
|
pa_stream_disconnect(stream);
|
|
pa_stream_unref(stream);
|
|
}
|
|
if(context){
|
|
pa_context_disconnect(context);
|
|
pa_context_unref(context);
|
|
}
|
|
if(mainloop)
|
|
pa_threaded_mainloop_free(mainloop);
|
|
|
|
if(lib)
|
|
dlclose(lib);
|
|
}
|
|
|
|
bool AudioOutputPulse::IsAvailable(){
|
|
void* lib=dlopen("libpulse.so.0", RTLD_LAZY);
|
|
if(!lib)
|
|
lib=dlopen("libpulse.so", RTLD_LAZY);
|
|
if(lib){
|
|
dlclose(lib);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void AudioOutputPulse::Configure(uint32_t sampleRate, uint32_t bitsPerSample, uint32_t channels){
|
|
|
|
}
|
|
|
|
void AudioOutputPulse::Start(){
|
|
if(failed || isPlaying)
|
|
return;
|
|
|
|
isPlaying=true;
|
|
pa_operation_unref(pa_stream_cork(stream, 0, AudioOutputPulse::StreamSuccessCallback, mainloop));
|
|
}
|
|
|
|
void AudioOutputPulse::Stop(){
|
|
if(!isPlaying)
|
|
return;
|
|
|
|
isPlaying=false;
|
|
pa_operation_unref(pa_stream_cork(stream, 1, AudioOutputPulse::StreamSuccessCallback, mainloop));
|
|
}
|
|
|
|
bool AudioOutputPulse::IsPlaying(){
|
|
return isPlaying;
|
|
}
|
|
|
|
void AudioOutputPulse::SetCurrentDevice(std::string devID){
|
|
currentDevice=devID;
|
|
if(isPlaying && isConnected){
|
|
pa_threaded_mainloop_lock(mainloop);
|
|
pa_stream_disconnect(stream);
|
|
isConnected=false;
|
|
}
|
|
|
|
pa_buffer_attr bufferAttr={
|
|
.maxlength=960*6,
|
|
.tlength=960*2,
|
|
.prebuf=0,
|
|
.minreq=960*2
|
|
};
|
|
int streamFlags=PA_STREAM_START_CORKED | PA_STREAM_INTERPOLATE_TIMING |
|
|
PA_STREAM_NOT_MONOTONIC | PA_STREAM_AUTO_TIMING_UPDATE | PA_STREAM_ADJUST_LATENCY;
|
|
|
|
int err=pa_stream_connect_playback(stream, devID=="default" ? NULL : devID.c_str(), &bufferAttr, (pa_stream_flags_t)streamFlags, NULL, NULL);
|
|
if(err!=0 && devID!="default"){
|
|
SetCurrentDevice("default");
|
|
return;
|
|
}
|
|
CHECK_ERROR(err, "pa_stream_connect_playback");
|
|
|
|
while(true){
|
|
pa_stream_state_t streamState=pa_stream_get_state(stream);
|
|
if(!PA_STREAM_IS_GOOD(streamState)){
|
|
LOGE("Error connecting to audio device '%s'", devID.c_str());
|
|
failed=true;
|
|
return;
|
|
}
|
|
if(streamState==PA_STREAM_READY)
|
|
break;
|
|
pa_threaded_mainloop_wait(mainloop);
|
|
}
|
|
|
|
isConnected=true;
|
|
pa_threaded_mainloop_unlock(mainloop);
|
|
|
|
if(isPlaying){
|
|
pa_operation_unref(pa_stream_cork(stream, 0, AudioOutputPulse::StreamSuccessCallback, mainloop));
|
|
}
|
|
}
|
|
|
|
void AudioOutputPulse::EnumerateDevices(std::vector<AudioOutputDevice>& devs){
|
|
|
|
}
|
|
|
|
void AudioOutputPulse::ContextStateCallback(pa_context* context, void* arg) {
|
|
AudioOutputPulse* self=(AudioOutputPulse*) arg;
|
|
self->pa_threaded_mainloop_signal(self->mainloop, 0);
|
|
}
|
|
|
|
void AudioOutputPulse::StreamStateCallback(pa_stream *s, void* arg) {
|
|
AudioOutputPulse* self=(AudioOutputPulse*) arg;
|
|
self->pa_threaded_mainloop_signal(self->mainloop, 0);
|
|
}
|
|
|
|
void AudioOutputPulse::StreamWriteCallback(pa_stream *stream, size_t requestedBytes, void *userdata){
|
|
((AudioOutputPulse*)userdata)->StreamWriteCallback(stream, requestedBytes);
|
|
}
|
|
|
|
void AudioOutputPulse::StreamWriteCallback(pa_stream *stream, size_t requestedBytes) {
|
|
int bytesRemaining = requestedBytes;
|
|
uint8_t *buffer = NULL;
|
|
while (bytesRemaining > 0) {
|
|
size_t bytesToFill = 102400;
|
|
size_t i;
|
|
|
|
if (bytesToFill > bytesRemaining) bytesToFill = bytesRemaining;
|
|
|
|
int err=pa_stream_begin_write(stream, (void**) &buffer, &bytesToFill);
|
|
CHECK_ERROR(err, "pa_stream_begin_write");
|
|
|
|
if(isPlaying){
|
|
while(remainingDataSize<bytesToFill){
|
|
if(remainingDataSize+960*2>=sizeof(remainingData)){
|
|
LOGE("Can't provide %d bytes of audio data at a time", (int)bytesToFill);
|
|
failed=true;
|
|
return;
|
|
}
|
|
InvokeCallback(remainingData+remainingDataSize, 960*2);
|
|
remainingDataSize+=960*2;
|
|
}
|
|
memcpy(buffer, remainingData, bytesToFill);
|
|
memmove(remainingData, remainingData+bytesToFill, remainingDataSize-bytesToFill);
|
|
remainingDataSize-=bytesToFill;
|
|
}else{
|
|
memset(buffer, 0, bytesToFill);
|
|
}
|
|
|
|
err=pa_stream_write(stream, buffer, bytesToFill, NULL, 0LL, PA_SEEK_RELATIVE);
|
|
CHECK_ERROR(err, "pa_stream_write");
|
|
|
|
bytesRemaining -= bytesToFill;
|
|
}
|
|
}
|
|
|
|
void AudioOutputPulse::StreamSuccessCallback(pa_stream *stream, int success, void *userdata) {
|
|
return;
|
|
} |