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add port selection and video device selection #68

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add port selection and video device selection #68

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4 changes: 4 additions & 0 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -51,6 +51,10 @@ Options:

-V, --verbose echo every command that gets executed

-n, --video-number select the number of video device you would like to use. Default is 42. This means /dev/video42 will be created.

-P, --PORT select the port you would like to use. Default is 8554.

-h, --help display this help
Commands:
webcam start the GoPro in webcam mode
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44 changes: 30 additions & 14 deletions gopro
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Expand Up @@ -42,14 +42,16 @@ globals() {
GOPRO_DEVICE=${GOPRO_DEVICE}
GOPRO_IP=${GOPRO_IP}
GOPRO_USER=${GOPRO_USER}
GOPRO_VIDEO_NUMBER=${GOPRO_VIDEO_NUMBER:-42}
GOPRO_PORT=${GOPRO_PORT:-8554}
}

DEPS=( "ffmpeg" "curl" )
module="v4l2loopback"
module_cmd="modprobe v4l2loopback exclusive_caps=1 card_label='GoPro' video_nr=42"
module_cmd_unload="modprobe -rf v4l2loopback"

START_PATH="/gp/gpWebcam/START?res="
START_PATH="/gp/gpWebcam/START"
# TODO: seems buggy atm, though
STOP_PATH="/gp/gpWebcam/STOP"
FOV_PATH="/gp/gpWebcam/SETTINGS?fov="
Expand Down Expand Up @@ -80,6 +82,12 @@ function run_args {
if [[ $GOPRO_USER ]]; then
>&2 echo " * User: $GOPRO_USER"
fi
if [[ $GOPRO_VIDEO_NUMBER ]]; then
>&2 echo " * Video Number: /dev/video$GOPRO_VIDEO_NUMBER"
fi
if [[ $GOPRO_PORT ]]; then
>&2 echo " * Port: $GOPRO_PORT"
fi
>&2 echo "=========================="
>&2 echo ""
}
Expand Down Expand Up @@ -115,6 +123,7 @@ function validate_arguments {
red "Please choose either \"wide\", \"linear\", or \"narrow\""
exit 1
fi
module_cmd="modprobe v4l2loopback exclusive_caps=1 card_label='GoPro'$GOPRO_VIDEO_NUMBER video_nr=$GOPRO_VIDEO_NUMBER"

if [[ ${GOPRO_RESOLUTION} -ne "1080" && ${GOPRO_RESOLUTION} -ne "720" && ${GOPRO_RESOLUTION} -ne "480" ]]; then
red "Please choose either \"1080\", \"720\", or \"480\""
Expand Down Expand Up @@ -154,6 +163,10 @@ Options:

-V, --verbose echo every command that gets executed

-n, --video-number select the number of video device you would like to use. Default is 42.

-P, --PORT select the port you would like to use. Default is 8554.

-h, --help display this help
Commands:
webcam start the GoPro in webcam mode
Expand Down Expand Up @@ -212,6 +225,14 @@ function parse_args {
DEPS+=('vlc')
GOPRO_PREVIEW=1
;;
-n|--video-number)
GOPRO_VIDEO_NUMBER=$2
shift
;;
-P|--PORT)
GOPRO_PORT=$2
shift
;;
-)
_EXTRA_ARGS+=("$(cat $2)")
_RAW_INPUT=1
Expand Down Expand Up @@ -340,20 +361,15 @@ function start_gopro_webcam_mode {

local response
# Switching to the GoPro Webcam mode
response=$(curl -s ${GOPRO_INTERFACE_IP}${START_PATH}${GOPRO_RESOLUTION})
# 一度にすべての設定を送信
response=$(curl -s "${GOPRO_INTERFACE_IP}${START_PATH}?res=${GOPRO_RESOLUTION}&fov=${GOPRO_FOV}&port=${GOPRO_PORT}")
if [ $? -ne 0 ]; then
red "Error while starting the Webcam mode. # TODO Useful message."
exit 1
fi
echo $response
if [[ -z "${response}" ]]; then
red "Did not receive a valid response from your GoPro. Please try again to run this script, timing is sometimes crucial."
red "Error while starting the Webcam mode."
exit 1
fi
response=$(curl -s ${GOPRO_INTERFACE_IP}${FOV_PATH}${GOPRO_FOV_ID})
echo $response
if [[ -z "${response}" ]]; then
red "Did not receive a valid response from your GoPro. Please try again to run this script, timing is sometimes crucial."
red "Did not receive a valid response from your GoPro. Please try again."
exit 1
fi

Expand Down Expand Up @@ -381,7 +397,7 @@ function expose_device {
if [ -n "${GOPRO_CROP}" ]; then
CROP=",crop=${GOPRO_CROP}"
fi
ffmpeg -nostdin -threads 1 -i 'udp://@0.0.0.0:8554?overrun_nonfatal=1&fifo_size=50000000' -f:v mpegts -fflags nobuffer -vf format="yuv420p${CROP}" -f v4l2 /dev/video42
ffmpeg -nostdin -threads 1 -i "udp://@0.0.0.0:${GOPRO_PORT}?overrun_nonfatal=1&fifo_size=50000000" -f:v mpegts -fflags nobuffer -vf format="yuv420p${CROP}" -f v4l2 /dev/video${GOPRO_VIDEO_NUMBER}
elif [[ ${GOPRO_PREVIEW} -eq 1 ]]; then
echo "Starting preview.."
start_preview
Expand All @@ -395,18 +411,18 @@ function expose_device {
function start_preview {

echo -e "To test this try this command(vlc needs to be installed): \n"
sudo -u $GOPRO_USER vlc -vvv --network-caching=300 --sout-x264-preset=ultrafast --sout-x264-tune=zerolatency --sout-x264-vbv-bufsize 0 --sout-transcode-threads 4 --no-audio udp://@:8554
sudo -u $GOPRO_USER vlc -vvv --network-caching=300 --sout-x264-preset=ultrafast --sout-x264-tune=zerolatency --sout-x264-vbv-bufsize 0 --sout-transcode-threads 4 --no-audio udp://@:${GOPRO_PORT}
}

function info_only {
echo -e "\n\nYou should be ready to use your GoPro on your prefered videostreaming tool. Have Fun!"

echo -e "\n\nIf you want to use the GoPro in your prefered Video conferencing software (browser and apps works alike) pipe the UDP stream to a video device (that was created already) with this command: \n"
green "ffmpeg -nostdin -threads 1 -i 'udp://@0.0.0.0:8554?overrun_nonfatal=1&fifo_size=50000000' -f:v mpegts -fflags nobuffer -vf format=yuv420p -f v4l2 /dev/video42"
green "ffmpeg -nostdin -threads 1 -i 'udp://@0.0.0.0:${GOPRO_PORT}?overrun_nonfatal=1&fifo_size=50000000' -f:v mpegts -fflags nobuffer -vf format=yuv420p -f v4l2 /dev/video${GOPRO_VIDEO_NUMBER}"

echo -e "\nTo get a preview of the output in vlc you can run this command"
echo -e "To test this try this command(vlc needs to be installed): \n"
green "vlc -vvv --network-caching=300 --sout-x264-preset=ultrafast --sout-x264-tune=zerolatency --sout-x264-vbv-bufsize 0 --sout-transcode-threads 4 --no-audio udp://@:8554"
green "vlc -vvv --network-caching=300 --sout-x264-preset=ultrafast --sout-x264-tune=zerolatency --sout-x264-vbv-bufsize 0 --sout-transcode-threads 4 --no-audio udp://@:${GOPRO_PORT}"
}


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