bool VideoInput::captureFrame()
{
// Return true if capture could continue, false if must be stop
if (not decoder_)
return false;
const auto ret = decoder_->decode(getNewFrame());
switch (ret) {
case MediaDecoder::Status::ReadError:
case MediaDecoder::Status::DecodeError:
return false;
// End of streamed file
case MediaDecoder::Status::EOFError:
createDecoder();
return static_cast<bool>(decoder_);
case MediaDecoder::Status::FrameFinished:
publishFrame();
// continue decoding
case MediaDecoder::Status::Success:
default:
return true;
}
}
bool VideoInput::captureFrame()
{
VideoPacket pkt;
const auto ret = decoder_->decode(getNewFrame(), pkt);
switch (ret) {
case VideoDecoder::Status::FrameFinished:
break;
case VideoDecoder::Status::ReadError:
case VideoDecoder::Status::DecodeError:
loop_.stop();
// fallthrough
case VideoDecoder::Status::Success:
return false;
// Play in loop
case VideoDecoder::Status::EOFError:
deleteDecoder();
createDecoder();
return false;
}
publishFrame();
return true;
}
int main(int argc, char** argv)
{
bool connectionSuccessful = false;
while(!connectionSuccessful)
{
try
{
spykee = new SpykeeManager(SPYKEE_USER, SPYKEE_PWD);
connectionSuccessful = true;
}
catch (SpykeeException& e)
{
cerr << "Error connecting with the robot" << endl;
cerr << "Make sure that Spykee is turned on and " <<
"that your wireless network is working! " <<
"(Retrying in 5 seconds...)" << endl;
sleep(5);
}
}
/* NOTE: node is initialize here so that SIGINT can kill the application during
* the previous cycle (ROS install a signal handler for SIGINT, that should make ros::ok()
* return false, but that didn't worked well when inserted in the previous cycle...
*/
ros::init(argc, argv, "spykee");
ros::NodeHandle ros_node;
ros::Subscriber sub = ros_node.subscribe("spykee_motion", 1000, move);
ros::Publisher img_pub = ros_node.advertise<sensor_msgs::CompressedImage>("spykee_camera", 3);
ros::Publisher bat_pub = ros_node.advertise<std_msgs::Int8>("spykee_battery", 3);
spykee->unplug();
spykee->setLed(0, false); /* try to turn off the flash */
spykee->setCameraStatus(true);
ros::AsyncSpinner spinner(1);
spinner.start();
while (ros::ok())
{
spykee->readPacket();
if(spykee->hasImage())
{
publishFrame(img_pub, spykee->readImage());
}
if(spykee->hasBattery())
{
publishBattery(bat_pub, spykee->getBatteryLevel());
}
}
ros::waitForShutdown();
delete spykee;
return EXIT_SUCCESS;
}
void
VideoMixer::process()
{
const auto now = std::chrono::system_clock::now();
const auto diff = now - lastProcess_;
const auto delay = FRAME_DURATION - diff;
if (delay.count() > 0)
std::this_thread::sleep_for(delay);
lastProcess_ = now;
VideoFrame& output = getNewFrame();
try {
output.reserve(VIDEO_PIXFMT_YUYV422, width_, height_);
} catch (const std::bad_alloc& e) {
RING_ERR("VideoFrame::allocBuffer() failed");
return;
}
yuv422_clear_to_black(output);
{
auto lock(rwMutex_.read());
int i = 0;
for (const auto& x : sources_) {
/* thread stop pending? */
if (!loop_.isRunning())
return;
// make rendered frame temporarily unavailable for update()
// to avoid concurrent access.
std::unique_ptr<VideoFrame> input;
x->atomic_swap_render(input);
if (input)
render_frame(output, *input, i);
x->atomic_swap_render(input);
++i;
}
}
publishFrame();
}
void FFmpegDecoderVideo::decodeLoop()
{
FFmpegPacket packet;
double pts;
while (! m_exit)
{
// Work on the current packet until we have decoded all of it
while (m_bytes_remaining > 0)
{
// Save global PTS to be stored in m_frame via getBuffer()
m_packet_pts = packet.packet.pts;
// Decode video frame
int frame_finished = 0;
// We want to use the entire packet since some codecs will require extra information for decoding
const int bytes_decoded = avcodec_decode_video2(m_context, m_frame.get(), &frame_finished, &(packet.packet));
if (bytes_decoded < 0)
throw std::runtime_error("avcodec_decode_video failed()");
m_bytes_remaining -= bytes_decoded;
m_packet_data += bytes_decoded;
// Publish the frame if we have decoded a complete frame
if (frame_finished)
{
AVRational timebase;
// Find out the frame pts
if (m_frame->pts != int64_t(AV_NOPTS_VALUE))
{
pts = m_frame->pts;
timebase = m_context->time_base;
}
else if (packet.packet.dts == int64_t(AV_NOPTS_VALUE) &&
m_frame->opaque != 0 &&
*reinterpret_cast<const int64_t*>(m_frame->opaque) != int64_t(AV_NOPTS_VALUE))
{
pts = *reinterpret_cast<const int64_t*>(m_frame->opaque);
timebase = m_stream->time_base;
}
else if (packet.packet.dts != int64_t(AV_NOPTS_VALUE))
{
pts = packet.packet.dts;
timebase = m_stream->time_base;
}
else
{
pts = 0;
timebase = m_context->time_base;
}
pts *= av_q2d(timebase);
const double synched_pts = m_clocks.videoSynchClock(m_frame.get(), av_q2d(timebase), pts);
const double frame_delay = m_clocks.videoRefreshSchedule(synched_pts);
publishFrame(frame_delay, m_clocks.audioDisabled());
}
}
while(m_paused && !m_exit)
{
microSleep(10000);
}
// Get the next packet
pts = 0;
if (packet.valid())
packet.clear();
bool is_empty = true;
packet = m_packets.timedPop(is_empty, 10);
if (! is_empty)
{
if (packet.type == FFmpegPacket::PACKET_DATA)
{
m_bytes_remaining = packet.packet.size;
m_packet_data = packet.packet.data;
}
else if (packet.type == FFmpegPacket::PACKET_FLUSH)
{
avcodec_flush_buffers(m_context);
}
}
}
}
