32struct StreamConfiguration;
42 bool isValid()
const {
return m2m_ !=
nullptr; }
47 std::tuple<unsigned int, unsigned int>
51 const std::vector<std::reference_wrapper<StreamConfiguration>> &outputCfg);
53 std::vector<std::unique_ptr<FrameBuffer>> *buffers);
59 const std::map<const Stream *, FrameBuffer *> &outputs);
65 class V4L2M2MStream :
protected Loggable
70 bool isValid()
const {
return m2m_ !=
nullptr; }
72 int configure(
const StreamConfiguration &inputCfg,
73 const StreamConfiguration &outputCfg);
75 std::vector<std::unique_ptr<FrameBuffer>> *buffers);
80 int queueBuffers(FrameBuffer *input, FrameBuffer *output);
82 int setInputSelection(
unsigned int target, Rectangle *rect);
83 int getInputSelection(
unsigned int target, Rectangle *rect);
88 std::string logPrefix()
const override;
91 void captureBufferReady(FrameBuffer *buffer);
95 const Stream *stream_;
96 std::unique_ptr<V4L2M2MDevice> m2m_;
98 unsigned int inputBufferCount_;
99 unsigned int outputBufferCount_;
101 std::pair<Rectangle, Rectangle> inputCropBounds_;
104 std::unique_ptr<V4L2M2MDevice> m2m_;
106 std::map<const Stream *, std::unique_ptr<V4L2M2MStream>> streams_;
107 std::map<FrameBuffer *, unsigned int> queue_;
Abstract Base Class for converter.
Definition: converter.h:35
Signal< FrameBuffer * > outputBufferReady
A signal emitted on each frame buffer completion of the output queue.
Definition: converter.h:72
Frame buffer data and its associated dynamic metadata.
Definition: framebuffer.h:49
Base class to support log message extensions.
Definition: log.h:91
Describe a rectangle's position and dimensions.
Definition: geometry.h:243
Describe a range of sizes.
Definition: geometry.h:201
Describe a two-dimensional size.
Definition: geometry.h:53
Video stream for a camera.
Definition: stream.h:74
The V4L2 M2M converter implements the converter interface based on V4L2 M2M device.
Definition: converter_v4l2_m2m.h:37
int setInputCrop(const Stream *stream, Rectangle *rect)
Set the crop rectangle rect for stream.
Definition: converter_v4l2_m2m.cpp:459
V4L2M2MConverter(MediaDevice *media)
Construct a V4L2M2MConverter instance.
Definition: converter_v4l2_m2m.cpp:248
int loadConfiguration(const std::string &filename)
Definition: converter_v4l2_m2m.h:41
std::pair< Rectangle, Rectangle > inputCropBounds(const Stream *stream)
Retrieve the crop bounds for stream.
Definition: converter_v4l2_m2m.cpp:477
std::tuple< unsigned int, unsigned int > strideAndFrameSize(const PixelFormat &pixelFormat, const Size &size)
Retrieve the output stride and frame size for an input configutation.
Definition: converter_v4l2_m2m.cpp:392
void stop()
Stop the converter streaming operation.
Definition: converter_v4l2_m2m.cpp:507
SizeRange sizes(const Size &input)
Retrieve the range of minimum and maximum output sizes for an input size.
Definition: converter_v4l2_m2m.cpp:343
std::vector< PixelFormat > formats(PixelFormat input)
Definition: converter_v4l2_m2m.cpp:303
bool isValid() const
Definition: converter_v4l2_m2m.h:42
int exportBuffers(const Stream *stream, unsigned int count, std::vector< std::unique_ptr< FrameBuffer > > *buffers)
Export buffers from the converter device.
Definition: converter_v4l2_m2m.cpp:446
int start()
Start the converter streaming operation.
Definition: converter_v4l2_m2m.cpp:489
int configure(const StreamConfiguration &inputCfg, const std::vector< std::reference_wrapper< StreamConfiguration > > &outputCfg)
Configure a set of output stream conversion from an input stream.
Definition: converter_v4l2_m2m.cpp:409
int queueBuffers(FrameBuffer *input, const std::map< const Stream *, FrameBuffer * > &outputs)
Queue buffers to converter device.
Definition: converter_v4l2_m2m.cpp:516
Top-level libcamera namespace.
Definition: backtrace.h:17
Signal & slot implementation.
Configuration parameters for a stream.
Definition: stream.h:40