/* This thread can lock, do whatever it wants, and read from/write to the jack
* ring buffers
* XXX: Access to shared state (i.e. member variables) should be synchronized if needed */
void
JackLayer::ringbuffer_worker()
{
flushMain();
flushUrgent();
while (true) {
std::unique_lock<std::mutex> lock(ringbuffer_thread_mutex_);
// may have changed, we don't want to wait for a notification we won't get
if (status_ != Status::Started)
return;
// FIXME this is all kinds of evil
usleep(20000);
capture();
playback();
// wait until process() signals more data
// FIXME: this checks for spurious wakes, but the predicate
// is rather arbitrary. We should wait until ring has/needs data
// and jack has/needs data.
data_ready_.wait(lock, [&] {
// Note: lock is released while waiting, and held when woken
// up, so this predicate is called while holding the lock
return status_ != Status::Started
or ringbuffer_ready_for_read(in_ringbuffers_[0]);
});
}
}
int main(int argc, char *argv[])
{
writei_func = snd_pcm_writei;
int err;
char *pcm_name = "default";
snd_pcm_info_t *info;
snd_pcm_info_alloca(&info);
stream = SND_PCM_STREAM_PLAYBACK;
err = snd_pcm_open(&handle, pcm_name, stream, open_mode);
if (err < 0) {
// error(_("audio open error: %s"), snd_strerror(err));
return 1;
}
if ((err = snd_pcm_info(handle, info)) < 0) {
// error(_("info error: %s"), snd_strerror(err));
return 1;
}
snd_pcm_nonblock(handle, 0);
printf("set_params!!\n");
// set_params();
//playbackv(&argv[1], argc0);
printf("playback!!\n");
playback(argv[1]);
return 0;
}
/*Initializes all the actions(buttons)*/
void MainWindow::loadActions()
{
for (int i = 5; i <= 100; i= i+5)
{
string sizes = to_string(i);
char const *pchar = sizes.c_str();
QAction *action = new QAction(tr(pchar), this);
action->setData(i);
connect(action, SIGNAL(triggered()), this, SLOT(resizeBrush()));
sizeActions.append(action);
}
for (int i = 1; i <= 3; ++i)
{
string sizes = to_string(i);
char const *pchar = sizes.c_str();
QAction *action = new QAction(tr("Map %1").arg(pchar) , this);
action->setData(i);
connect(action, SIGNAL(triggered()), this, SLOT(map()));
mapActions.append(action);
}
playbackAction = new QAction(tr("&PlayBack"), this);
connect(playbackAction, SIGNAL(triggered()), drawArea, SLOT(playback()));
saveAction = new QAction(tr("&Save"), this);
connect(saveAction, SIGNAL(triggered()), this, SLOT(saveGesture()));
openAction = new QAction(tr("&Open"), this);
connect(openAction, SIGNAL(triggered()), this, SLOT(openGesture()));
clearScreenAction = new QAction(tr("&ClearScreen"), this);
clearScreenAction->setShortcut(tr("Ctrl+L"));
connect(clearScreenAction, SIGNAL(triggered()), drawArea, SLOT(clearScreen()));
}
int main(void) {
// playbackRandom();
capture(0);
printf("Capture done, sleeping for 5 secs\n");
sleep(5);
playback();
return 0;
}
void main(){
initialize(STEREO,RESOLUTION,SAMPLINGRATE); // MONO/STEREO, 16/24-bit, sampling rate (48 kHz or 96 kHz)
printf("\nPlayback Loop\n");
playback();
while(1);
}
int do_play(char* file_name)
{
char *pcm_name = "default";
int tmp, err, c;
snd_pcm_info_t *info;
snd_pcm_info_alloca(&info);
err = snd_output_stdio_attach(&log, stderr, 0);
assert(err >= 0);
stream = SND_PCM_STREAM_PLAYBACK;
chunk_size = -1;
rhwparams.format = DEFAULT_FORMAT;
rhwparams.rate = DEFAULT_SPEED;
rhwparams.channels = 1;
err = snd_pcm_open(&handle, pcm_name, stream, open_mode);
if (err < 0) {
error(_("audio open error: %s"), snd_strerror(err));
return 1;
}
if ((err = snd_pcm_info(handle, info)) < 0) {
error(_("info error: %s"), snd_strerror(err));
return 1;
}
if (nonblock) {
err = snd_pcm_nonblock(handle, 1);
if (err < 0) {
error(_("nonblock setting error: %s"), snd_strerror(err));
return 1;
}
}
chunk_size = 1024;
hwparams = rhwparams;
audiobuf = (u_char *)malloc(1024);
if (audiobuf == NULL) {
error(_("not enough memory"));
return 1;
}
signal(SIGINT, signal_handler);
signal(SIGTERM, signal_handler);
signal(SIGABRT, signal_handler);
playback(file_name);
snd_pcm_close(handle);
free(audiobuf);
snd_output_close(log);
snd_config_update_free_global();
return EXIT_SUCCESS;
}
SkPicture* SkPicture::Forwardport(const SkPictInfo& info, const SkPictureData* data) {
if (!data) {
return nullptr;
}
SkPicturePlayback playback(data);
SkPictureRecorder r;
playback.draw(r.beginRecording(info.fCullRect), nullptr/*no callback*/);
return r.endRecording();
}
void AlsaLayer::audioCallback()
{
if (!playbackHandle_ or !captureHandle_)
return;
notifyIncomingCall();
snd_pcm_wait(playbackHandle_, 20);
int playbackAvailFrames = 0;
if (not safeUpdate(playbackHandle_, playbackAvailFrames))
return;
unsigned framesToGet = urgentRingBuffer_.availableForGet(MainBuffer::DEFAULT_ID);
if (framesToGet > 0) {
// Urgent data (dtmf, incoming call signal) come first.
framesToGet = std::min(framesToGet, (unsigned)playbackAvailFrames);
playbackBuff_.setFormat(audioFormat_);
playbackBuff_.resize(framesToGet);
urgentRingBuffer_.get(playbackBuff_, MainBuffer::DEFAULT_ID);
playbackBuff_.applyGain(isPlaybackMuted_ ? 0.0 : playbackGain_);
playbackBuff_.interleave(playbackIBuff_);
write(playbackIBuff_.data(), framesToGet, playbackHandle_);
// Consume the regular one as well (same amount of frames)
Manager::instance().getMainBuffer().discard(framesToGet, MainBuffer::DEFAULT_ID);
} else {
// regular audio data
playback(playbackAvailFrames);
}
if (ringtoneHandle_) {
AudioLoop *file_tone = Manager::instance().getTelephoneFile();
int ringtoneAvailFrames = 0;
if (not safeUpdate(ringtoneHandle_, ringtoneAvailFrames))
return;
playbackBuff_.setFormat(audioFormat_);
playbackBuff_.resize(ringtoneAvailFrames);
if (file_tone) {
DEBUG("playback gain %d", playbackGain_);
file_tone->getNext(playbackBuff_, playbackGain_);
}
playbackBuff_.interleave(playbackIBuff_);
write(playbackIBuff_.data(), ringtoneAvailFrames, ringtoneHandle_);
}
// Additionally handle the mic's audio stream
if (is_capture_running_)
capture();
}
sk_sp<SkPicture> SkPicture::Forwardport(const SkPictInfo& info,
const SkPictureData* data,
const SkReadBuffer* buffer) {
if (!data) {
return nullptr;
}
SkPicturePlayback playback(data);
SkPictureRecorder r;
playback.draw(r.beginRecording(info.fCullRect), nullptr/*no callback*/, buffer);
return r.finishRecordingAsPicture();
}
static SkTimedPicturePlayback* CreateFromStream(SkStream* stream, const SkPictInfo& info,
SkPicture::InstallPixelRefProc proc,
const SkTDArray<bool>& deletedCommands) {
// Mimics SkPicturePlayback::CreateFromStream
SkAutoTDelete<SkTimedPicturePlayback> playback(SkNEW_ARGS(SkTimedPicturePlayback,
(deletedCommands)));
if (!playback->parseStream(stream, info, proc)) {
return NULL; // we're invalid
}
return playback.detach();
}
int main(void)
{
volatile long int char_count = 0;
volatile long int* char_count_pointer = &char_count;
robot_status = ENABLED;
print("Robot Enabled!\n");
pause(1000);
#ifdef TEST
test(char_count_pointer);
return 0;
#endif
#ifdef PLAYBACK //make sure this is before LOG because it will reopen file with write
logInit();
playback("Main.txt", LOG_SIZE);
pause(5000);
#endif
#ifdef LOG
logInit();
logData("Main.txt", "Hello File World!\n", 0, char_count_pointer);
#endif
#ifdef DRIVE
initDrive();
#endif
filter_count = 0;
counter = 0;
print("Hello Robot\n");
low(LED_2);
low(LED_1);
//distance_parallel();
while(1)//main loop
{
debug("loop\n",0);
//debug("Loop\n", 0);
//button();
navigate();
//checkDriveTrain();
//pause(100);
counter++; //VERY IMPORTANT
}
print("Robot disabled!\n");
}
void VideoPlayer::run()
{
stopPlayback = false;
while(true && !stopPlayback)
{
garbageCollection();
deinitCodec();
initCodec();
while(playback() && !stopPlayback)
{
}
}
}
sk_sp<SkFlattenable> SkRecordedDrawable::CreateProc(SkReadBuffer& buffer) {
// Read the bounds.
SkRect bounds;
buffer.readRect(&bounds);
// Unflatten into a SkPictureData.
SkPictInfo info;
info.fCullRect = bounds;
SkAutoTDelete<SkPictureData> pictureData(SkPictureData::CreateFromBuffer(buffer, info));
if (!pictureData) {
return nullptr;
}
// Create a drawable.
SkPicturePlayback playback(pictureData);
SkPictureRecorder recorder;
playback.draw(recorder.beginRecording(bounds), nullptr, &buffer);
return recorder.finishRecordingAsDrawable();
}
int USBH_USR_MSC_Application()
{
static uint8_t is_rdy = 0;
if(is_rdy)
{
if(HCD_IsDeviceConnected(&USB_OTG_Core) != 1)
while(1);
playback(result);
//write_file("audio.wav", (void*)data, sizeof(uint16_t)*MAX_BUF_SIZE);
f_mount(0, 0);
STM_EVAL_LEDOff(LED6);
while(1);
}
else
{
if(f_mount( 0, &fatfs ) != FR_OK )
while(1);
if(USBH_MSC_Param.MSWriteProtect == DISK_WRITE_PROTECTED)
while(1);
is_rdy = 1;
}
return 0;
}
bool Editor::exportMovieCLI(QString filePath, LayerCamera *cameraLayer, int width, int height, int startFrame, int endFrame)
{
if (width < 0)
{
width = cameraLayer->getViewRect().width();
}
if (height < 0)
{
height = cameraLayer->getViewRect().height();
}
if (startFrame < 1)
{
startFrame = 1;
}
if (endFrame < -1)
{
endFrame = mLayerManager->animationLength();
}
if (endFrame < 0)
{
endFrame = mLayerManager->animationLength(false);
}
QSize exportSize = QSize(width, height);
ExportMovieDesc desc;
desc.strFileName = filePath;
desc.startFrame = startFrame;
desc.endFrame = endFrame;
desc.fps = playback()->fps();
desc.exportSize = exportSize;
desc.strCameraName = cameraLayer->name();
MovieExporter ex;
ex.run(object(), desc, [](float,float){}, [](float){}, [](QString){});
return true;
}
bool SkMultiPictureDocumentRead(SkStreamSeekable* stream,
SkDocumentPage* dstArray,
int dstArrayCount,
const SkDeserialProcs* procs) {
if (!SkMultiPictureDocumentReadPageSizes(stream, dstArray, dstArrayCount)) {
return false;
}
SkSize joined = {0.0f, 0.0f};
for (int i = 0; i < dstArrayCount; ++i) {
joined = SkSize{SkTMax(joined.width(), dstArray[i].fSize.width()),
SkTMax(joined.height(), dstArray[i].fSize.height())};
}
auto picture = SkPicture::MakeFromStream(stream, procs);
PagerCanvas canvas(joined.toCeil(), dstArray, dstArrayCount);
// Must call playback(), not drawPicture() to reach
// PagerCanvas::onDrawAnnotation().
picture->playback(&canvas);
if (canvas.fIndex != dstArrayCount) {
SkDEBUGF("Malformed SkMultiPictureDocument\n");
}
return true;
}
int main(int argc, char *argv[])
{
pid_t fpid;
int msgid = -1;
msgid = msgget((key_t)1234, 0666 | IPC_CREAT);
if(msgid == -1)
{
fprintf(stderr, "msgget failed with error: %d\n", errno);
exit(-1);
}
fpid=fork();
if(fpid<0)
printf("fork failed\n");
else if(fpid==0)
{
//child process,capture audio when main process send start cmd, finish when receive stop cmd
//rec((char *)argv[1]);
long int msgtype = 8;//MAIN_TO_AUDIO 8
struct msg_st data_r;
while(1)
{
printf("waiting audio capt cmd...\n");
msgrcv(msgid, (void*)&data_r, sizeof(struct msg_st)-sizeof(long int), msgtype, 0);
printf("data_r id %d,text %d\n",data_r.msg_type,data_r.id);
switch (data_r.id)
{
case 0://start rec
{
rec("/tmp/rec.avi");
}
break;
case 2://start transfer string and play
{
play(data_r.text,"/tmp/3.wav");
playback("/tmp/3.wav");
}
break;
default:
break;
}
}
}
else
{
//father process
long int msgtype = 8;//MAIN_TO_AUDIO 8
struct msg_st data_r;
int status;
while(1)
{
ms_sleep(2);
data_r.msg_type = 8;
data_r.id=0;
printf("start record\n");
if(msgsnd(msgid, (void*)&data_r, sizeof(struct msg_st)-sizeof(long int), IPC_NOWAIT) == -1)
{
fprintf(stderr, "msgsnd failed %s msgid %d\n",strerror(errno),msgid);
exit(1);
}
ms_sleep(3);
data_r.msg_type = 8;
data_r.id=1;
printf("stop record\n");
if(msgsnd(msgid, (void*)&data_r, sizeof(struct msg_st)-sizeof(long int), IPC_NOWAIT) == -1)
{
fprintf(stderr, "msgsnd failed %s\n",strerror(errno));
exit(1);
}
printf("waiting message 7\n");
msgtype=7;
msgrcv(msgid, (void*)&data_r, sizeof(struct msg_st)-sizeof(long int), msgtype, 0);
printf("Get Result %s\n",data_r.text);
data_r.msg_type = 8; //注意2
data_r.id=2;
printf("start transfer and playback\n");
if(msgsnd(msgid, (void*)&data_r, sizeof(struct msg_st)-sizeof(long int), IPC_NOWAIT) == -1)
{
fprintf(stderr, "msgsnd failed %s\n",strerror(errno));
exit(1);
}
system("rm /tmp/rec.avi");
//system("ipcs -q");
}
waitpid(fpid, &status, 0);
}
return 0;
}
void doState(states_t command, SAMPLE* sptr)
{
int tempi;
switch(command)
{
// ring buffer contents are initialized
// next state determined by caller
case S_INIT:
currentSTATE = S_INIT;
zeroMemory(sptr);
break;
// filling the ring buffer with samples
// next state determined by caller
case S_COLLECTING:
currentSTATE = S_COLLECTING;
//printf("\n=== Now recording!! ===\n");
//fflush(stdout);
break;
// simple playback of last NUM_PLAYBACK_SECONDS seconds
case S_REWIND_10:
currentSTATE = S_REWIND_10;
greenLED = ON;
digitalWrite (LED_PIN, ON) ;
// tell playback callback how many frames to play
data.maxFrameIndex = totalFrames =
NUM_PLAYBACK_SECONDS * SAMPLE_RATE;
// reset playback count
data.frameIndex = 0;
// playback NUM_PLAYBACK_SECONDS
// adjust pointers with mod RING_BUFFER_LEN arithmetic
tempi = ringbufferWPTR - (data.maxFrameIndex * NUM_CHANNELS);
if(tempi < 0)
tempi += RING_BUFFER_LEN;
ringbufferRPTR = tempi;
playbackDirection = FWD;
buttonPress = FALSE;
buttonHold = FALSE;
// Playback recorded data. ----------------------------------
// advance state to playback
currentSTATE = S_PLAYBACK;
break;
// rewind playback while button is held
// playback from top of buffer but at faster sample rate
// when button is release, advance state and playback at
// normal sample rate from where we released button
// the FWD/REV i/o pin tells to go from the top of the buffer
// in the REV speech direction or all the way from the start of the
// buffer (5 min back in time) in the FWD speech direction
case S_REWIND_PLAYBACK:
currentSTATE = S_REWIND_PLAYBACK;
//+++++++++++++++++++++++++++++++++++++++++++++++++++++
greenLED = ON;
digitalWrite (LED_PIN, ON) ;
// tell playback how many frames to play
// say all of them but we will use the button
// unpress to stop before this
data.maxFrameIndex = totalFrames =
NUM_SECONDS * SAMPLE_RATE - 4;
// reset playback count
data.frameIndex = 0;
buttonPress = FALSE;
buttonHold = FALSE;
if(digitalRead(DIRECTION_PIN) == 1)
{
// playback fast and in reverse from current write pointer
playbackDirection = REV;
// start at buffer head
ringbufferRPTR = ringbufferWPTR;
// fast playback 4X speed
playback(32000); // stays here until rewind playback finished
// will return here when button is released
}
else
{
// playback fast and in forward direction
// from buffer start
playbackDirection = FWD;
// all the way back 5 minutes in time
tempi =
ringbufferWPTR - ( NUM_SECONDS * SAMPLE_RATE * NUM_CHANNELS - 4);
if(tempi < 0)
tempi += RING_BUFFER_LEN;
ringbufferRPTR = tempi;
// fast playback 2X speed
playback(16000); // stays here until rewind playback finished
// will return here when button is released
}
//+++++++++++++++++++++++++++++++++++++++++++++++++++++
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// we are finished rewinding playback
// now do regular forward playback from read pointer which has
// been going in the reverse direction
// (or forward direction depending on io pin)
// how far did we go back?
// we started at buffer head
// ringbufferRPTR = ringbufferWPTR;
// we held the button this many samples
tempi = ringbufferWPTR - ringbufferRPTR;
if(tempi < 0)
tempi += RING_BUFFER_LEN;
// tell playback how many frames to play
// pointers are in samples
// maxFrameIndex is in frames--duh!
data.maxFrameIndex = totalFrames = tempi / NUM_CHANNELS;
// reset playback count
data.frameIndex = 0;
// reset RPTR
// playback NUM_PLAYBACK_SECONDS
tempi = ringbufferWPTR - (data.maxFrameIndex * NUM_CHANNELS);
if(tempi < 0)
tempi += RING_BUFFER_LEN;
ringbufferRPTR = tempi;
playbackDirection = FWD;
buttonPress = FALSE;
buttonHold = FALSE;
// Playback recorded data. ----------------------------------
// advance state to playback
currentSTATE = S_PLAYBACK;
break;
// playback from top of buffer at normal sample rate
// data.maxFrameIndex should be set
case S_PLAYBACK:
currentSTATE = S_PLAYBACK;
// playback from the top of the buffer
// will only run interrupts until playback finished
// state machine will not run until returns
playback(8000); // stays here until playback finished
greenLED = OFF;
digitalWrite (LED_PIN, OFF) ;
// will return here when all samples have been played
currentSTATE = S_STOP;
break;
// all stop--pointer rudder is amidship
// ring buffer contents are preserved
// to exit this state, power down.
// todo(maybe?): to exit this state, five button presses?
// how would I remember that? Add more buttons? Labels? ...
case S_STOP:
currentSTATE = S_STOP;
// leave the S_STOP state (LED OFF) when button is pressed once
// (10 second rewind) or held pressed (rewind playback FWD or REV
// 4X/2X speed)
// Not implemented-- re-enter S_COLLECTING and overwrite samples
// with 5 button presses (?) or something...
// like another hardware switch
if(digitalRead(REBOOT_PIN) == 0)
{
system("/home/pi/reboot.py");
}
tempi = checkButton();
if(tempi == OFF)
break;
if(tempi == 1)
{
//printf("button press\n");
//fflush(stdout);
currentSTATE = S_REWIND_10;
break;
}
else
{ // checkButton returned minus
//printf("button hold\n");
//fflush(stdout);
currentSTATE = S_REWIND_PLAYBACK;
//terminate = TRUE;
//printf("terminate\n");
//fflush(stdout);
break;
}
break;
default:
break;
}
}
int main(int argc, char *argv[])
{
int rc=0;
signal(SIGINT, ctrlc);
oscstreamdb_defaults();
init_playmode_default(argv[0]);
if (cmdline(argc, argv))
return 1;
if (n_device_strings < 1) {
printf("You must specify a device name to record. (-d)\n");
return 1;
}
switch (backend) {
case BACKEND_TEXT:
backend_start = text_start;
backend_stop = text_stop;
backend_poll = text_poll;
backend_write_value = text_write_value;
backend_write_generic = text_write_generic;
backend_seek_start = text_seek_start;
backend_read = text_read;
break;
case BACKEND_BINARY:
backend_start = binary_start;
backend_stop = binary_stop;
backend_poll = binary_poll;
backend_write_value = binary_write_value;
//WIP
//backend_write_generic = binary_write_generic;
break;
case BACKEND_OSCSTREAMDB:
if (backend_oscstreamdb_options.stream==0) {
help();
return 1;
}
backend_start = oscstreamdb_start;
backend_stop = oscstreamdb_stop;
backend_poll = oscstreamdb_poll;
backend_write_value = oscstreamdb_write_value;
//WIP
//backend_write_generic = oscstreamdb_write_generic;
break;
default:
printf("Unknown backend selected.\n");
return 1;
}
if (playback_mode) {
playback(0);
return 0;
}
if (backend_start()) {
printf("Error starting backend.\n");
rc = 1;
goto done;
}
if (recmonitor_start()) {
printf("Error starting monitor.\n");
rc = 1;
goto done;
}
if (recdevice_start()) {
printf("Error starting device.\n");
rc = 1;
goto done;
}
while (!(backend_poll() || command_poll() || done)) {
recmonitor_poll();
recdevice_poll(100);
}
done:
printf("Exiting.\n");
recmonitor_stop();
recdevice_stop();
backend_stop();
return rc;
}
void Visualizer::drawHistory() {
glPushMatrix();
/*
struct timespec tv;
clock_gettime(CLOCK_MONOTONIC, &tv);
double time = tv.tv_sec + tv.tv_nsec*1e-9;
glRotatef(time*360/mRepeater->getOptions().loopDelay/4, 0, 0, -1);
*/
mRepeater->getHistory(mHistory);
mRoundShader->bind();
ERRORCHECK();
const size_t count = mHistory.history.size();
double maxR = 1e-6;
// TODO make these persistent
QuadLoop power(count);
LineLoop limit(count);
QuadLoop expected(count);
LineLoop playback(count);
{
QuadLoop::iterator pi = power.begin();
QuadLoop::iterator ei = expected.begin();
LineLoop::iterator li = limit.begin();
LineLoop::iterator pb = playback.begin();
for (auto dp : mHistory.history) {
//maxR = std::max(maxR, li->y = dp.limitPower);
li->y = dp.limitPower;
li++;
maxR = std::max(maxR, ei->out.y = dp.expectedPower);
ei++;
maxR = std::max(maxR, pi->out.y = dp.recordedPower);
pi->in.r = dp.recordedPower/dp.limitPower;
pi->out.r = dp.recordedPower;
pi->in.a = 0.1;
pi->out.a = 0.8;
pi++;
maxR = std::max(maxR, pb->y = dp.expectedPower*dp.actualGain);
pb++;
}
}
mZoom = mZoom*0.9 + 0.1*0.97/maxR;
glScalef(mZoom, mZoom, mZoom);
glEnableClientState(GL_VERTEX_ARRAY);
glColor4f(0.5, 0.5, 0, 0.3);
expected.draw();
glColor4f(1, 1, 0, 1);
glLineWidth(1);
expected.drawOutline();
glEnableClientState(GL_COLOR_ARRAY);
power.draw();
glDisableClientState(GL_COLOR_ARRAY);
glColor4f(1, 0, 0, 1);
glLineWidth(2);
limit.draw();
glColor4f(0, 1, 0, 0.5);
glLineWidth(0.5);
playback.draw();
ERRORCHECK();
glDisableClientState(GL_VERTEX_ARRAY);
glLineWidth(2);
glBegin(GL_LINES);
glColor4f(0, 1, 0, 0.5);
glVertex3f(power[mHistory.playPos].in.x, 0, 0);
glVertex3f(power[mHistory.playPos].in.x, 100, 0);
glColor4f(0, 0, 1, 0.5);
glVertex3f(power[mHistory.recordPos].in.x, 0, 0);
glVertex3f(power[mHistory.recordPos].in.x, 100, 0);
glEnd();
{
size_t i = mHistory.recordPos;
double x = power[i].in.x;
const auto& dp = mHistory.history[i];
mVolume = mVolume*0.95 + dp.expectedPower*0.05;
glPointSize(10);
glBegin(GL_POINTS);
glColor4f(1, 0, 1, 0.5);
glVertex3f(x, mVolume*dp.targetGain, 0);
glColor4f(0, 0.5, 0.5, 0.5);
glVertex3f(x, mVolume*dp.actualGain, 0);
glEnd();
glPointSize(7);
glBegin(GL_POINTS);
glColor4f(0, 0.7, 0.7, 0.7);
glVertex3f(x, mVolume*dp.actualGain, 0);
glEnd();
}
ERRORCHECK();
glPopMatrix();
}
static int handle(struct device *dv)
{
int r;
unsigned short revents;
struct alsa *alsa = (struct alsa*)dv->local;
/* Check input buffer for timecode capture */
r = pcm_revents(&alsa->capture, &revents);
if (r < 0)
return -1;
if (revents & POLLIN) {
r = capture(dv);
if (r < 0) {
if (r == -EPIPE) {
fputs("ALSA: capture xrun.\n", stderr);
r = snd_pcm_prepare(alsa->capture.pcm);
if (r < 0) {
alsa_error("prepare", r);
return -1;
}
r = snd_pcm_start(alsa->capture.pcm);
if (r < 0) {
alsa_error("start", r);
return -1;
}
} else {
alsa_error("capture", r);
return -1;
}
}
}
/* Check the output buffer for playback */
r = pcm_revents(&alsa->playback, &revents);
if (r < 0)
return -1;
if (revents & POLLOUT) {
r = playback(dv);
if (r < 0) {
if (r == -EPIPE) {
fputs("ALSA: playback xrun.\n", stderr);
r = snd_pcm_prepare(alsa->playback.pcm);
if (r < 0) {
alsa_error("prepare", r);
return -1;
}
/* The device starts when data is written. POLLOUT
* events are generated in prepared state. */
} else {
alsa_error("playback", r);
return -1;
}
}
}
return 0;
}
/*
Takes pointer to a playlist, forks off a playback process and tries to play
the next track in the playlist. If there's already a playback process, it's
killed first (which means the currently played track is skipped).
*/
int play(struct playlist * list) {
unsigned i;
int pipefd[2];
char * keys [] = {
"creator", "title", "album", "duration", "station",
"lastfm:trackauth", "trackpage", "artistpage", "albumpage",
"image", "freeTrackURL",
};
assert(list != NULL);
if(!list->left)
return 0;
if(playfork) {
kill(playfork, SIGUSR1);
return !0;
}
enable(QUIET);
empty(& track);
for(i = 0; i < (sizeof(keys) / sizeof(char *)); ++i)
set(& track, keys[i], value(& list->track->track, keys[i]));
if(pipe(pipefd) != 0)
return !0;
playfork = fork();
if(!playfork) {
FILE * fd = NULL;
const char * location = value(& list->track->track, "location");
close(pipefd[1]);
rmsckif();
subfork = 0;
if(location != NULL) {
fetch(location, & fd, NULL, NULL);
if(fd != NULL) {
/*
If there was an error, tell the main process about it by
sending SIGUSR2.
*/
if(!playback(fd, pipefd[0]))
kill(getppid(), SIGUSR2);
close(pipefd[0]);
fshutdown(& fd);
}
}
exit(EXIT_SUCCESS);
}
close(pipefd[0]);
if(playpipe != 0)
close(playpipe);
playpipe = pipefd[1];
return !0;
}
