diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/libcamera/camera.cpp | 66 |
1 files changed, 64 insertions, 2 deletions
diff --git a/src/libcamera/camera.cpp b/src/libcamera/camera.cpp index 49f49fb7..b8c6c8b2 100644 --- a/src/libcamera/camera.cpp +++ b/src/libcamera/camera.cpp @@ -110,7 +110,8 @@ const std::string &Camera::name() const */ Camera::Camera(PipelineHandler *pipe, const std::string &name) - : pipe_(pipe->shared_from_this()), name_(name), acquired_(false) + : pipe_(pipe->shared_from_this()), name_(name), acquired_(false), + disconnected_(false) { } @@ -133,7 +134,7 @@ void Camera::disconnect() { LOG(Camera, Debug) << "Disconnecting camera " << name_; - /** \todo Block API calls when they will be implemented. */ + disconnected_ = true; disconnected.emit(this); } @@ -186,4 +187,65 @@ const std::vector<Stream *> &Camera::streams() const return streams_; } +/** + * \brief Retrieve a group of stream configurations + * \param[in] streams A map of stream IDs and configurations to setup + * + * Retrieve the camera's configuration for a specified group of streams. The + * caller can specifies which of the camera's streams to retrieve configuration + * from by populating \a streams. + * + * The easiest way to populate the array of streams to fetch configuration from + * is to first retrieve the camera's full array of stream with streams() and + * then potentially trim it down to only contain the streams the caller + * are interested in. + * + * \return A map of successfully retrieved stream IDs and configurations or an + * empty list on error. + */ +std::map<Stream *, StreamConfiguration> +Camera::streamConfiguration(std::vector<Stream *> &streams) +{ + if (disconnected_ || !streams.size()) + std::map<unsigned int, StreamConfiguration> {}; + + return pipe_->streamConfiguration(this, streams); +} + +/** + * \brief Configure the camera's streams prior to capture + * \param[in] config A map of stream IDs and configurations to setup + * + * Prior to starting capture, the camera must be configured to select a + * group of streams to be involved in the capture and their configuration. + * The caller specifies which streams are to be involved and their configuration + * by populating \a config. + * + * The easiest way to populate the array of config is to fetch an initial + * configuration from the camera with streamConfiguration() and then change the + * parameters to fit the caller's need and once all the streams parameters are + * configured hand that over to configureStreams() to actually setup the camera. + * + * Exclusive access to the camera shall be ensured by a call to acquire() prior + * to calling this function, otherwise an -EACCES error will be returned. + * + * \return 0 on success or a negative error code on error. + * \retval -ENODEV The camera is not connected to any hardware + * \retval -EACCES The user has not acquired exclusive access to the camera + * \retval -EINVAL The configuration is not valid + */ +int Camera::configureStreams(std::map<Stream *, StreamConfiguration> &config) +{ + if (disconnected_) + return -ENODEV; + + if (!acquired_) + return -EACCES; + + if (!config.size()) + return -EINVAL; + + return pipe_->configureStreams(this, config); +} + } /* namespace libcamera */ |