def _create_resizer(self, width, height):
self.resizer = ct.POINTER(mmal.MMAL_COMPONENT_T)()
mmal_check(mmal.mmal_component_create(
mmal.MMAL_COMPONENT_DEFAULT_RESIZER, self.resizer),
prefix="Failed to create resizer component")
if not self.resizer[0].input_num:
raise PiCameraError("No input ports on resizer component")
if not self.resizer[0].output_num:
raise PiCameraError("No output ports on resizer component")
# Copy the original input port's format to the resizer's input,
# then the resizer's input format to the output, and configure it
mmal.mmal_format_copy(self.resizer[0].input[0][0].format,
self.input_port[0].format)
mmal_check(mmal.mmal_port_format_commit(self.resizer[0].input[0]),
prefix="Failed to set resizer input port format")
mmal.mmal_format_copy(self.resizer[0].output[0][0].format,
self.resizer[0].input[0][0].format)
fmt = self.resizer[0].output[0][0].format
fmt[0].es[0].video.width = width
fmt[0].es[0].video.height = height
fmt[0].es[0].video.crop.x = 0
fmt[0].es[0].video.crop.y = 0
fmt[0].es[0].video.crop.width = width
fmt[0].es[0].video.crop.height = height
mmal_check(mmal.mmal_port_format_commit(self.resizer[0].output[0]),
prefix="Failed to set resizer output port format")
def _create_resizer(self, width, height):
self.resizer = ct.POINTER(mmal.MMAL_COMPONENT_T)()
mmal_check(
mmal.mmal_component_create(mmal.MMAL_COMPONENT_DEFAULT_RESIZER, self.resizer),
prefix="Failed to create resizer component",
)
if not self.resizer[0].input_num:
raise PiCameraError("No input ports on resizer component")
if not self.resizer[0].output_num:
raise PiCameraError("No output ports on resizer component")
# Copy the original input port's format to the resizer's input,
# then the resizer's input format to the output, and configure it
mmal.mmal_format_copy(self.resizer[0].input[0][0].format, self.input_port[0].format)
mmal_check(
mmal.mmal_port_format_commit(self.resizer[0].input[0]), prefix="Failed to set resizer input port format"
)
mmal.mmal_format_copy(self.resizer[0].output[0][0].format, self.resizer[0].input[0][0].format)
fmt = self.resizer[0].output[0][0].format
fmt[0].es[0].video.width = width
fmt[0].es[0].video.height = height
fmt[0].es[0].video.crop.x = 0
fmt[0].es[0].video.crop.y = 0
fmt[0].es[0].video.crop.width = width
fmt[0].es[0].video.crop.height = height
mmal_check(
mmal.mmal_port_format_commit(self.resizer[0].output[0]), prefix="Failed to set resizer output port format"
)
def _create_encoder(self):
"""
Creates and configures the encoder itself
"""
assert not self.encoder
self.encoder = ct.POINTER(mmal.MMAL_COMPONENT_T)()
mmal_check(mmal.mmal_component_create(self.encoder_type, self.encoder),
prefix="Failed to create encoder component")
if not self.encoder[0].input_num:
raise PiCameraError("No input ports on encoder component")
if not self.encoder[0].output_num:
raise PiCameraError("No output ports on encoder component")
# Ensure output format is the same as the input
self.output_port = self.encoder[0].output[0]
if self.resizer:
mmal.mmal_format_copy(self.encoder[0].input[0][0].format,
self.resizer[0].output[0][0].format)
else:
mmal.mmal_format_copy(self.encoder[0].input[0][0].format,
self.input_port[0].format)
mmal_check(mmal.mmal_port_format_commit(self.encoder[0].input[0]),
prefix="Failed to set encoder input port format")
mmal.mmal_format_copy(self.output_port[0].format,
self.encoder[0].input[0][0].format)
# Set buffer size and number to appropriate values
self.output_port[0].buffer_size = max(
self.output_port[0].buffer_size_recommended,
self.output_port[0].buffer_size_min)
self.output_port[0].buffer_num = max(
self.output_port[0].buffer_num_recommended,
self.output_port[0].buffer_num_min)
def _create_encoder(self, **options):
"""
Creates and configures the encoder itself
"""
assert not self.encoder
self.encoder = ct.POINTER(mmal.MMAL_COMPONENT_T)()
mmal_check(
mmal.mmal_component_create(self.encoder_type, self.encoder), prefix="Failed to create encoder component"
)
if not self.encoder[0].input_num:
raise PiCameraError("No input ports on encoder component")
if not self.encoder[0].output_num:
raise PiCameraError("No output ports on encoder component")
# Ensure output format is the same as the input
self.output_port = self.encoder[0].output[0]
if self.resizer:
mmal.mmal_format_copy(self.encoder[0].input[0][0].format, self.resizer[0].output[0][0].format)
else:
mmal.mmal_format_copy(self.encoder[0].input[0][0].format, self.input_port[0].format)
mmal_check(
mmal.mmal_port_format_commit(self.encoder[0].input[0]), prefix="Failed to set encoder input port format"
)
mmal.mmal_format_copy(self.output_port[0].format, self.encoder[0].input[0][0].format)
# Set buffer size and number to appropriate values
self.output_port[0].buffer_size = max(
self.output_port[0].buffer_size_recommended, self.output_port[0].buffer_size_min
)
self.output_port[0].buffer_num = max(
self.output_port[0].buffer_num_recommended, self.output_port[0].buffer_num_min
)
def __init__(
self, parent, layer=0, alpha=255, fullscreen=True, window=None,
crop=None, rotation=0, vflip=False, hflip=False):
# Create and enable the renderer component
self._rotation = 0
self._vflip = False
self._hflip = False
self.parent = parent
self.renderer = ct.POINTER(mmal.MMAL_COMPONENT_T)()
mmal_check(
mmal.mmal_component_create(
mmal.MMAL_COMPONENT_DEFAULT_VIDEO_RENDERER, self.renderer),
prefix="Failed to create renderer component")
try:
if not self.renderer[0].input_num:
raise PiCameraError("No input ports on renderer component")
self.layer = layer
self.alpha = alpha
self.fullscreen = fullscreen
if window is not None:
self.window = window
if crop is not None:
self.crop = crop
self.rotation = rotation
self.vflip = vflip
self.hflip = hflip
mmal_check(
mmal.mmal_component_enable(self.renderer),
prefix="Renderer component couldn't be enabled")
except:
mmal.mmal_component_destroy(self.renderer)
raise
def __init__(self, parent, source):
self.parent = parent
self.renderer = ct.POINTER(mmal.MMAL_COMPONENT_T)()
mmal_check(
mmal.mmal_component_create(mmal.MMAL_COMPONENT_DEFAULT_NULL_SINK, self.renderer),
prefix="Failed to create null sink component",
)
try:
if not self.renderer[0].input_num:
raise PiCameraError("No input ports on null sink component")
mmal_check(mmal.mmal_component_enable(self.renderer), prefix="Null sink component couldn't be enabled")
except:
mmal.mmal_component_destroy(self.renderer)
raise
self.connection = self.parent._connect_ports(source, self.renderer[0].input[0])
def __init__(self, parent, source):
self.parent = parent
self.renderer = ct.POINTER(mmal.MMAL_COMPONENT_T)()
mmal_check(mmal.mmal_component_create(
mmal.MMAL_COMPONENT_DEFAULT_NULL_SINK, self.renderer),
prefix="Failed to create null sink component")
try:
if not self.renderer[0].input_num:
raise PiCameraError("No input ports on null sink component")
mmal_check(mmal.mmal_component_enable(self.renderer),
prefix="Null sink component couldn't be enabled")
except:
mmal.mmal_component_destroy(self.renderer)
raise
self.connection = self.parent._connect_ports(source,
self.renderer[0].input[0])
def __init__(self,
parent,
layer=0,
alpha=255,
fullscreen=True,
window=None,
crop=None,
rotation=0,
vflip=False,
hflip=False):
# Create and enable the renderer component
self._rotation = 0
self._vflip = False
self._hflip = False
self.parent = parent
self.renderer = ct.POINTER(mmal.MMAL_COMPONENT_T)()
mmal_check(mmal.mmal_component_create(
mmal.MMAL_COMPONENT_DEFAULT_VIDEO_RENDERER, self.renderer),
prefix="Failed to create renderer component")
try:
if not self.renderer[0].input_num:
raise PiCameraError("No input ports on renderer component")
self.layer = layer
self.alpha = alpha
self.fullscreen = fullscreen
if window is not None:
self.window = window
if crop is not None:
self.crop = crop
self.rotation = rotation
self.vflip = vflip
self.hflip = hflip
mmal_check(mmal.mmal_component_enable(self.renderer),
prefix="Renderer component couldn't be enabled")
except:
mmal.mmal_component_destroy(self.renderer)
raise
