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, **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)
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)
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,
source,
size=None,
layer=0,
alpha=255,
fullscreen=True,
window=None,
crop=None,
rotation=0,
vflip=False,
hflip=False):
super(PiOverlayRenderer,
self).__init__(parent, layer, alpha, fullscreen, window, crop,
rotation, vflip, hflip)
# Copy format from camera's preview port, then adjust the encoding to
# RGB888 and optionally adjust the resolution and size
port = self.renderer[0].input[0]
fmt = port[0].format
mmal.mmal_format_copy(
fmt,
parent._camera[0].output[parent.CAMERA_PREVIEW_PORT][0].format)
fmt[0].encoding = mmal.MMAL_ENCODING_RGB24
fmt[0].encoding_variant = mmal.MMAL_ENCODING_RGB24
if size is not None:
w, h = size
fmt[0].es[0].video.width = mmal.VCOS_ALIGN_UP(w, 32)
fmt[0].es[0].video.height = mmal.VCOS_ALIGN_UP(h, 16)
fmt[0].es[0].video.crop.width = w
fmt[0].es[0].video.crop.height = h
mmal_check(mmal.mmal_port_format_commit(port),
prefix="Overlay format couldn't be set")
port[0].buffer_num = port[0].buffer_num_min
port[0].buffer_size = port[0].buffer_size_recommended
mmal_check(mmal.mmal_component_enable(self.renderer),
prefix="Overlay couldn't be enabled")
mmal_check(mmal.mmal_port_enable(port, _overlay_callback),
prefix="Overlay input port couldn't be enabled")
self.pool = mmal.mmal_port_pool_create(port, port[0].buffer_num,
port[0].buffer_size)
if not self.pool:
raise PiCameraRuntimeError("Couldn't create pool for overlay")
self.update(source)
def __init__(
self, parent, source, size=None, layer=0, alpha=255,
fullscreen=True, window=None, crop=None, rotation=0, vflip=False,
hflip=False):
super(PiOverlayRenderer, self).__init__(
parent, layer, alpha, fullscreen, window, crop,
rotation, vflip, hflip)
# Copy format from camera's preview port, then adjust the encoding to
# RGB888 and optionally adjust the resolution and size
port = self.renderer[0].input[0]
fmt = port[0].format
mmal.mmal_format_copy(
fmt, parent._camera[0].output[parent.CAMERA_PREVIEW_PORT][0].format)
fmt[0].encoding = mmal.MMAL_ENCODING_RGB24
fmt[0].encoding_variant = mmal.MMAL_ENCODING_RGB24
if size is not None:
w, h = size
fmt[0].es[0].video.width = mmal.VCOS_ALIGN_UP(w, 32)
fmt[0].es[0].video.height = mmal.VCOS_ALIGN_UP(h, 16)
fmt[0].es[0].video.crop.width = w
fmt[0].es[0].video.crop.height = h
mmal_check(
mmal.mmal_port_format_commit(port),
prefix="Overlay format couldn't be set")
port[0].buffer_num = port[0].buffer_num_min
port[0].buffer_size = port[0].buffer_size_recommended
mmal_check(
mmal.mmal_component_enable(self.renderer),
prefix="Overlay couldn't be enabled")
mmal_check(
mmal.mmal_port_enable(port, _overlay_callback),
prefix="Overlay input port couldn't be enabled")
self.pool = mmal.mmal_port_pool_create(
port, port[0].buffer_num, port[0].buffer_size)
if not self.pool:
raise PiCameraRuntimeError("Couldn't create pool for overlay")
self.update(source)