def main(output_filename):
camera = mo.MMALCamera()
preview = mo.MMALRenderer()
encoder = mo.MMALVideoEncoder()
clock = ClockSplitter()
target = mo.MMALPythonTarget(output_filename)
# Configure camera output 0
camera.outputs[0].framesize = (640, 480)
camera.outputs[0].framerate = 24
camera.outputs[0].commit()
# Configure H.264 encoder
encoder.outputs[0].format = mmal.MMAL_ENCODING_H264
encoder.outputs[0].bitrate = 2000000
encoder.outputs[0].commit()
p = encoder.outputs[0].params[mmal.MMAL_PARAMETER_PROFILE]
p.profile[0].profile = mmal.MMAL_VIDEO_PROFILE_H264_HIGH
p.profile[0].level = mmal.MMAL_VIDEO_LEVEL_H264_41
encoder.outputs[0].params[mmal.MMAL_PARAMETER_PROFILE] = p
encoder.outputs[0].params[
mmal.MMAL_PARAMETER_VIDEO_ENCODE_INLINE_HEADER] = True
encoder.outputs[0].params[mmal.MMAL_PARAMETER_INTRAPERIOD] = 30
encoder.outputs[0].params[
mmal.MMAL_PARAMETER_VIDEO_ENCODE_INITIAL_QUANT] = 22
encoder.outputs[0].params[mmal.MMAL_PARAMETER_VIDEO_ENCODE_MAX_QUANT] = 22
encoder.outputs[0].params[mmal.MMAL_PARAMETER_VIDEO_ENCODE_MIN_QUANT] = 22
# Connect everything up and enable everything (no need to enable capture on
# camera port 0)
clock.inputs[0].connect(camera.outputs[0])
preview.inputs[0].connect(clock.outputs[0])
encoder.inputs[0].connect(clock.outputs[1])
target.inputs[0].connect(encoder.outputs[0])
target.connection.enable()
encoder.connection.enable()
preview.connection.enable()
clock.connection.enable()
target.enable()
encoder.enable()
preview.enable()
clock.enable()
try:
sleep(10)
finally:
# Disable everything and tear down the pipeline
target.disable()
encoder.disable()
preview.disable()
clock.disable()
target.inputs[0].disconnect()
encoder.inputs[0].disconnect()
preview.inputs[0].disconnect()
clock.inputs[0].disconnect()
def main(output_filename):
camera = mo.MMALCamera()
preview = mo.MMALRenderer()
encoder = mo.MMALVideoEncoder()
clock = ClockSplitter()
# Configure camera output 0
camera.outputs[0].framesize = (640, 480)
camera.outputs[0].framerate = 24
camera.outputs[0].commit()
# Configure H.264 encoder
encoder.outputs[0].format = mmal.MMAL_ENCODING_H264
encoder.outputs[0].bitrate = 2000000
encoder.outputs[0].commit()
p = encoder.outputs[0].params[mmal.MMAL_PARAMETER_PROFILE]
p.profile[0].profile = mmal.MMAL_VIDEO_PROFILE_H264_HIGH
p.profile[0].level = mmal.MMAL_VIDEO_LEVEL_H264_41
encoder.outputs[0].params[mmal.MMAL_PARAMETER_PROFILE] = p
encoder.outputs[0].params[mmal.MMAL_PARAMETER_VIDEO_ENCODE_INLINE_HEADER] = True
encoder.outputs[0].params[mmal.MMAL_PARAMETER_INTRAPERIOD] = 30
encoder.outputs[0].params[mmal.MMAL_PARAMETER_VIDEO_ENCODE_INITIAL_QUANT] = 22
encoder.outputs[0].params[mmal.MMAL_PARAMETER_VIDEO_ENCODE_MAX_QUANT] = 22
encoder.outputs[0].params[mmal.MMAL_PARAMETER_VIDEO_ENCODE_MIN_QUANT] = 22
output = io.open(output_filename, 'wb')
def output_callback(port, buf):
output.write(buf.data)
return bool(buf.flags & mmal.MMAL_BUFFER_HEADER_FLAG_EOS)
# Connect everything up (no need to enable capture on camera port 0)
clock.connect(camera.outputs[0])
preview.connect(clock.outputs[0])
encoder.connect(clock.outputs[1])
encoder.outputs[0].enable(output_callback)
try:
sleep(10)
finally:
preview.disconnect()
encoder.disconnect()
clock.disconnect()
def __init__(self):
self.__resolutions = {
# 'short': [fps, (width, height)]
'720p': [30, (1280, 720)],
'1080p': [24, (1920, 1080)],
}
self.__config = ConfigParser()
self.__config.read("/etc/raspberrydashcam/config.ini")
# Set up the basic stuff
self._title = self.__config["dashcam"]["title"]
self._fps, self._resolution = self.__resolutions[
self.__config["camera"]["resolution"]]
self._bitrate = int(self.__config["camera"]["bitrate"])
# Create the filename that we're going to record to.
self._filename = datetime.now().strftime(
"/mnt/storage/%Y-%m-%d-%H-%M-%S.mp4")
# This is just a place holder.
self.__fmpeg_instance = None
# This is the ffmpeg command we will run
self.__ffmpeg_command = [
"/usr/bin/ffmpeg",
#"-loglevel quiet -stats",
"-async",
"1",
"-vsync",
"1",
"-ar",
"44100",
"-ac",
"1",
"-f",
"s16le",
"-f",
"alsa",
"-thread_queue_size",
"10240",
"-i",
"hw:2,0",
"-f",
"h264",
"-probesize",
"10M",
"-r",
str(self._fps),
"-thread_queue_size",
"10240",
"-i",
"-", # Read from stdin
"-crf",
"22",
"-vcodec",
"copy",
"-acodec",
"aac",
"-ab",
"128k",
"-g",
str(self._fps * 2), # GOP should be double the fps.
"-r",
str(self._fps),
"-f",
"mp4",
self._filename
]
self.__camera = mo.MMALCamera()
self.__preview = mo.MMALRenderer()
self.__encoder = mo.MMALVideoEncoder()
self.__DashCamData = DashCamData(title=self._title,
resolution=self._resolution)
# Here we start the ffmpeg process and at the same time
# open up a stdin pipe to it.
self.__ffmpeg_instance = subprocess.Popen(" ".join(
self.__ffmpeg_command),
shell=True,
stdin=subprocess.PIPE)
# Here we specify that the script should write to stdin of the
# ffmpeg process.
self.__target = mo.MMALPythonTarget(self.__ffmpeg_instance.stdin)
# Setup resolution and fps
self.__camera.outputs[0].framesize = self._resolution
self.__camera.outputs[0].framerate = self._fps
# Commit the two previous changes
self.__camera.outputs[0].commit()
# Do base configuration of encoder.
self.__encoder.outputs[0].format = mmal.MMAL_ENCODING_H264
self.__encoder.outputs[0].bitrate = self._bitrate
# Commit the encoder changes.
self.__encoder.outputs[0].commit()
# Get current MMAL_PARAMETER_PROFILE from encoder
profile = self.__encoder.outputs[0].params[mmal.MMAL_PARAMETER_PROFILE]
# Modify the proflle
# Set the profile to MMAL_VIDEO_PROFILE_H264_HIGH
profile.profile[0].profile = mmal.MMAL_VIDEO_PROFILE_H264_HIGH
profile.profile[0].level = mmal.MMAL_VIDEO_LEVEL_H264_41
# Now make sure encoder get's the modified profile
self.__encoder.outputs[0].params[mmal.MMAL_PARAMETER_PROFILE] = profile
# Now to stuff that is completely stolen
# which I do not yet know what they do.
self.__encoder.outputs[0].params[
mmal.MMAL_PARAMETER_VIDEO_ENCODE_INLINE_HEADER] = True
self.__encoder.outputs[0].params[mmal.MMAL_PARAMETER_INTRAPERIOD] = 48
self.__encoder.outputs[0].params[
mmal.MMAL_PARAMETER_VIDEO_ENCODE_INITIAL_QUANT] = 17
self.__encoder.outputs[0].params[
mmal.MMAL_PARAMETER_VIDEO_ENCODE_MAX_QUANT] = 17
self.__encoder.outputs[0].params[
mmal.MMAL_PARAMETER_VIDEO_ENCODE_MIN_QUANT] = 17
# Stolen from picamera module, very clever stuff
self.__mirror_parameter = {
(False, False): mmal.MMAL_PARAM_MIRROR_NONE,
(True, False): mmal.MMAL_PARAM_MIRROR_VERTICAL,
(False, True): mmal.MMAL_PARAM_MIRROR_HORIZONTAL,
(True, True): mmal.MMAL_PARAM_MIRROR_BOTH,
}
# Set initial values
self.vflip = self.hflip = False
# Get actual config values from config
if self.__config["camera"].getboolean("vflip"):
self.set_vflip(True)
if self.__config["camera"].getboolean("hflip"):
self.set_hflip(True)
self.__camera.control.params[
mmal.MMAL_PARAMETER_VIDEO_STABILISATION] = True
mp = self.__camera.control.params[mmal.MMAL_PARAMETER_EXPOSURE_MODE]
print(mp)
mp.value = mmal.MMAL_PARAM_EXPOSUREMODE_AUTO
self.__camera.control.params[mmal.MMAL_PARAMETER_EXPOSURE_MODE] = mp
mp = self.__camera.control.params[mmal.MMAL_PARAMETER_AWB_MODE]
mp.value = mmal.MMAL_PARAM_AWBMODE_HORIZON
self.__camera.control.params[mmal.MMAL_PARAMETER_AWB_MODE] = mp
from signal import pause # define values from the camera window #my desktop 1600x900 (800x450) camResW = 200 camResH = 225 camFramR = 30 # starting corner of your windows (upper-left position) cornerX = 500 cornerY = 600 windowSpacer = 10 # space between the 2 windows camera = mo.MMALCamera() splitter = mo.MMALSplitter() render_l = mo.MMALRenderer() render_r = mo.MMALRenderer() # The 960 and 720 are the resolution. This can be changed to fill your display properly. I believe I'm using 960 and 1080 on mine. camera.outputs[0].framesize = (camResW, camResH) # This originally was 30, but then I the latency is too high and it's nearly impossible to navigate while wearing a head mounted display. camera.outputs[0].framerate = camFramR camera.outputs[0].commit() p = render_l.inputs[0].params[mmal.MMAL_PARAMETER_DISPLAYREGION] p.set = mmal.MMAL_DISPLAY_SET_FULLSCREEN | mmal.MMAL_DISPLAY_SET_DEST_RECT p.fullscreen = False # These parameters control the X,Y and scale of the left image showing up on your display p.dest_rect = mmal.MMAL_RECT_T(cornerX, cornerY, camResW, camResH) render_l.inputs[0].params[mmal.MMAL_PARAMETER_DISPLAYREGION] = p # These control the X,Y and the scale of the right image showing up on your display. p.dest_rect = mmal.MMAL_RECT_T(cornerX + windowSpacer + camResW, cornerY,
from picamera import mmal, mmalobj as mo
source = mo.MMALPythonSource('test.h264')
decoder = mo.MMALVideoDecoder()
preview = mo.MMALRenderer()
# read the input as h264
source.outputs[0].format = mmal.MMAL_ENCODING_H264
source.outputs[0].framerate = 25
source.outputs[0].framesize = (1280, 720)
source.outputs[0].commit()
# decoder input port
decoder.inputs[0].copy_from(source.outputs[0])
decoder.inputs[0].commit()
# decoder output port
decoder.outputs[0].copy_from(decoder.inputs[0])
decoder.outputs[0].format = mmal.MMAL_ENCODING_I420
decoder.outputs[0].commit()
# connect source -> decoder -> preview
decoder.inputs[0].connect(source.outputs[0])
decoder.inputs[0].connection.enable()
preview.inputs[0].connect(decoder.outputs[0])
# enable everything
preview.enable()
decoder.enable()
source.enable()