diff options
| -rw-r--r-- | src/libcamera/pipeline/vivid/vivid.cpp | 80 |
1 files changed, 79 insertions, 1 deletions
diff --git a/src/libcamera/pipeline/vivid/vivid.cpp b/src/libcamera/pipeline/vivid/vivid.cpp index 3c7f052f..2a3f9f0b 100644 --- a/src/libcamera/pipeline/vivid/vivid.cpp +++ b/src/libcamera/pipeline/vivid/vivid.cpp @@ -5,9 +5,13 @@ * vivid.cpp - Pipeline handler for the vivid capture device */ +#include <math.h> + #include <libcamera/base/log.h> #include <libcamera/camera.h> +#include <libcamera/control_ids.h> +#include <libcamera/controls.h> #include <libcamera/formats.h> #include "libcamera/internal/device_enumerator.h" @@ -252,6 +256,46 @@ void PipelineHandlerVivid::stop(Camera *camera) data->video_->releaseBuffers(); } +int PipelineHandlerVivid::processControls(VividCameraData *data, Request *request) +{ + ControlList controls(data->video_->controls()); + + for (auto it : request->controls()) { + unsigned int id = it.first; + unsigned int offset; + uint32_t cid; + + if (id == controls::Brightness) { + cid = V4L2_CID_BRIGHTNESS; + offset = 128; + } else if (id == controls::Contrast) { + cid = V4L2_CID_CONTRAST; + offset = 0; + } else if (id == controls::Saturation) { + cid = V4L2_CID_SATURATION; + offset = 0; + } else { + continue; + } + + int32_t value = lroundf(it.second.get<float>() * 128 + offset); + controls.set(cid, std::clamp(value, 0, 255)); + } + + for (const auto &ctrl : controls) + LOG(VIVID, Debug) + << "Setting control " << utils::hex(ctrl.first) + << " to " << ctrl.second.toString(); + + int ret = data->video_->setControls(&controls); + if (ret) { + LOG(VIVID, Error) << "Failed to set controls: " << ret; + return ret < 0 ? ret : -EINVAL; + } + + return ret; +} + int PipelineHandlerVivid::queueRequestDevice(Camera *camera, Request *request) { VividCameraData *data = cameraData(camera); @@ -263,7 +307,11 @@ int PipelineHandlerVivid::queueRequestDevice(Camera *camera, Request *request) return -ENOENT; } - int ret = data->video_->queueBuffer(buffer); + int ret = processControls(data, request); + if (ret < 0) + return ret; + + ret = data->video_->queueBuffer(buffer); if (ret < 0) return ret; @@ -301,6 +349,36 @@ int VividCameraData::init() video_->bufferReady.connect(this, &VividCameraData::bufferReady); + /* Initialise the supported controls. */ + const ControlInfoMap &controls = video_->controls(); + ControlInfoMap::Map ctrls; + + for (const auto &ctrl : controls) { + const ControlId *id; + ControlInfo info; + + switch (ctrl.first->id()) { + case V4L2_CID_BRIGHTNESS: + id = &controls::Brightness; + info = ControlInfo{ { -1.0f }, { 1.0f }, { 0.0f } }; + break; + case V4L2_CID_CONTRAST: + id = &controls::Contrast; + info = ControlInfo{ { 0.0f }, { 2.0f }, { 1.0f } }; + break; + case V4L2_CID_SATURATION: + id = &controls::Saturation; + info = ControlInfo{ { 0.0f }, { 2.0f }, { 1.0f } }; + break; + default: + continue; + } + + ctrls.emplace(id, info); + } + + controlInfo_ = std::move(ctrls); + return 0; } |