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Diffstat (limited to 'src/libcamera/pipeline/simple/converter.cpp')
-rw-r--r-- | src/libcamera/pipeline/simple/converter.cpp | 399 |
1 files changed, 0 insertions, 399 deletions
diff --git a/src/libcamera/pipeline/simple/converter.cpp b/src/libcamera/pipeline/simple/converter.cpp deleted file mode 100644 index 77c44fc8..00000000 --- a/src/libcamera/pipeline/simple/converter.cpp +++ /dev/null @@ -1,399 +0,0 @@ -/* SPDX-License-Identifier: LGPL-2.1-or-later */ -/* - * Copyright (C) 2020, Laurent Pinchart - * - * converter.cpp - Format converter for simple pipeline handler - */ - -#include "converter.h" - -#include <algorithm> -#include <limits.h> - -#include <libcamera/base/log.h> -#include <libcamera/base/signal.h> -#include <libcamera/base/utils.h> - -#include <libcamera/framebuffer.h> -#include <libcamera/geometry.h> -#include <libcamera/stream.h> - -#include "libcamera/internal/media_device.h" -#include "libcamera/internal/v4l2_videodevice.h" - -namespace libcamera { - -LOG_DECLARE_CATEGORY(SimplePipeline) - -/* ----------------------------------------------------------------------------- - * SimpleConverter::Stream - */ - -SimpleConverter::Stream::Stream(SimpleConverter *converter, unsigned int index) - : converter_(converter), index_(index) -{ - m2m_ = std::make_unique<V4L2M2MDevice>(converter->deviceNode_); - - m2m_->output()->bufferReady.connect(this, &Stream::outputBufferReady); - m2m_->capture()->bufferReady.connect(this, &Stream::captureBufferReady); - - int ret = m2m_->open(); - if (ret < 0) - m2m_.reset(); -} - -int SimpleConverter::Stream::configure(const StreamConfiguration &inputCfg, - const StreamConfiguration &outputCfg) -{ - V4L2PixelFormat videoFormat = - V4L2PixelFormat::fromPixelFormat(inputCfg.pixelFormat); - - V4L2DeviceFormat format; - format.fourcc = videoFormat; - format.size = inputCfg.size; - format.planesCount = 1; - format.planes[0].bpl = inputCfg.stride; - - int ret = m2m_->output()->setFormat(&format); - if (ret < 0) { - LOG(SimplePipeline, Error) - << "Failed to set input format: " << strerror(-ret); - return ret; - } - - if (format.fourcc != videoFormat || format.size != inputCfg.size || - format.planes[0].bpl != inputCfg.stride) { - LOG(SimplePipeline, Error) - << "Input format not supported (requested " - << inputCfg.size << "-" << videoFormat - << ", got " << format << ")"; - return -EINVAL; - } - - /* Set the pixel format and size on the output. */ - videoFormat = V4L2PixelFormat::fromPixelFormat(outputCfg.pixelFormat); - format = {}; - format.fourcc = videoFormat; - format.size = outputCfg.size; - - ret = m2m_->capture()->setFormat(&format); - if (ret < 0) { - LOG(SimplePipeline, Error) - << "Failed to set output format: " << strerror(-ret); - return ret; - } - - if (format.fourcc != videoFormat || format.size != outputCfg.size) { - LOG(SimplePipeline, Error) - << "Output format not supported"; - return -EINVAL; - } - - inputBufferCount_ = inputCfg.bufferCount; - outputBufferCount_ = outputCfg.bufferCount; - - return 0; -} - -int SimpleConverter::Stream::exportBuffers(unsigned int count, - std::vector<std::unique_ptr<FrameBuffer>> *buffers) -{ - return m2m_->capture()->exportBuffers(count, buffers); -} - -int SimpleConverter::Stream::start() -{ - int ret = m2m_->output()->importBuffers(inputBufferCount_); - if (ret < 0) - return ret; - - ret = m2m_->capture()->importBuffers(outputBufferCount_); - if (ret < 0) { - stop(); - return ret; - } - - ret = m2m_->output()->streamOn(); - if (ret < 0) { - stop(); - return ret; - } - - ret = m2m_->capture()->streamOn(); - if (ret < 0) { - stop(); - return ret; - } - - return 0; -} - -void SimpleConverter::Stream::stop() -{ - m2m_->capture()->streamOff(); - m2m_->output()->streamOff(); - m2m_->capture()->releaseBuffers(); - m2m_->output()->releaseBuffers(); -} - -int SimpleConverter::Stream::queueBuffers(FrameBuffer *input, - FrameBuffer *output) -{ - int ret = m2m_->output()->queueBuffer(input); - if (ret < 0) - return ret; - - ret = m2m_->capture()->queueBuffer(output); - if (ret < 0) - return ret; - - return 0; -} - -std::string SimpleConverter::Stream::logPrefix() const -{ - return "stream" + std::to_string(index_); -} - -void SimpleConverter::Stream::outputBufferReady(FrameBuffer *buffer) -{ - auto it = converter_->queue_.find(buffer); - if (it == converter_->queue_.end()) - return; - - if (!--it->second) { - converter_->inputBufferReady.emit(buffer); - converter_->queue_.erase(it); - } -} - -void SimpleConverter::Stream::captureBufferReady(FrameBuffer *buffer) -{ - converter_->outputBufferReady.emit(buffer); -} - -/* ----------------------------------------------------------------------------- - * SimpleConverter - */ - -SimpleConverter::SimpleConverter(MediaDevice *media) -{ - /* - * Locate the video node. There's no need to validate the pipeline - * further, the caller guarantees that this is a V4L2 mem2mem device. - */ - const std::vector<MediaEntity *> &entities = media->entities(); - auto it = std::find_if(entities.begin(), entities.end(), - [](MediaEntity *entity) { - return entity->function() == MEDIA_ENT_F_IO_V4L; - }); - if (it == entities.end()) - return; - - deviceNode_ = (*it)->deviceNode(); - - m2m_ = std::make_unique<V4L2M2MDevice>(deviceNode_); - int ret = m2m_->open(); - if (ret < 0) { - m2m_.reset(); - return; - } -} - -std::vector<PixelFormat> SimpleConverter::formats(PixelFormat input) -{ - if (!m2m_) - return {}; - - /* - * Set the format on the input side (V4L2 output) of the converter to - * enumerate the conversion capabilities on its output (V4L2 capture). - */ - V4L2DeviceFormat v4l2Format; - v4l2Format.fourcc = V4L2PixelFormat::fromPixelFormat(input); - v4l2Format.size = { 1, 1 }; - - int ret = m2m_->output()->setFormat(&v4l2Format); - if (ret < 0) { - LOG(SimplePipeline, Error) - << "Failed to set format: " << strerror(-ret); - return {}; - } - - std::vector<PixelFormat> pixelFormats; - - for (const auto &format : m2m_->capture()->formats()) { - PixelFormat pixelFormat = format.first.toPixelFormat(); - if (pixelFormat) - pixelFormats.push_back(pixelFormat); - } - - return pixelFormats; -} - -SizeRange SimpleConverter::sizes(const Size &input) -{ - if (!m2m_) - return {}; - - /* - * Set the size on the input side (V4L2 output) of the converter to - * enumerate the scaling capabilities on its output (V4L2 capture). - */ - V4L2DeviceFormat format; - format.fourcc = V4L2PixelFormat(); - format.size = input; - - int ret = m2m_->output()->setFormat(&format); - if (ret < 0) { - LOG(SimplePipeline, Error) - << "Failed to set format: " << strerror(-ret); - return {}; - } - - SizeRange sizes; - - format.size = { 1, 1 }; - ret = m2m_->capture()->setFormat(&format); - if (ret < 0) { - LOG(SimplePipeline, Error) - << "Failed to set format: " << strerror(-ret); - return {}; - } - - sizes.min = format.size; - - format.size = { UINT_MAX, UINT_MAX }; - ret = m2m_->capture()->setFormat(&format); - if (ret < 0) { - LOG(SimplePipeline, Error) - << "Failed to set format: " << strerror(-ret); - return {}; - } - - sizes.max = format.size; - - return sizes; -} - -std::tuple<unsigned int, unsigned int> -SimpleConverter::strideAndFrameSize(const PixelFormat &pixelFormat, - const Size &size) -{ - V4L2DeviceFormat format; - format.fourcc = V4L2PixelFormat::fromPixelFormat(pixelFormat); - format.size = size; - - int ret = m2m_->capture()->tryFormat(&format); - if (ret < 0) - return std::make_tuple(0, 0); - - return std::make_tuple(format.planes[0].bpl, format.planes[0].size); -} - -int SimpleConverter::configure(const StreamConfiguration &inputCfg, - const std::vector<std::reference_wrapper<StreamConfiguration>> &outputCfgs) -{ - int ret = 0; - - streams_.clear(); - streams_.reserve(outputCfgs.size()); - - for (unsigned int i = 0; i < outputCfgs.size(); ++i) { - Stream &stream = streams_.emplace_back(this, i); - - if (!stream.isValid()) { - LOG(SimplePipeline, Error) - << "Failed to create stream " << i; - ret = -EINVAL; - break; - } - - ret = stream.configure(inputCfg, outputCfgs[i]); - if (ret < 0) - break; - } - - if (ret < 0) { - streams_.clear(); - return ret; - } - - return 0; -} - -int SimpleConverter::exportBuffers(unsigned int output, unsigned int count, - std::vector<std::unique_ptr<FrameBuffer>> *buffers) -{ - if (output >= streams_.size()) - return -EINVAL; - - return streams_[output].exportBuffers(count, buffers); -} - -int SimpleConverter::start() -{ - int ret; - - for (Stream &stream : streams_) { - ret = stream.start(); - if (ret < 0) { - stop(); - return ret; - } - } - - return 0; -} - -void SimpleConverter::stop() -{ - for (Stream &stream : utils::reverse(streams_)) - stream.stop(); -} - -int SimpleConverter::queueBuffers(FrameBuffer *input, - const std::map<unsigned int, FrameBuffer *> &outputs) -{ - unsigned int mask = 0; - int ret; - - /* - * Validate the outputs as a sanity check: at least one output is - * required, all outputs must reference a valid stream and no two - * outputs can reference the same stream. - */ - if (outputs.empty()) - return -EINVAL; - - for (auto [index, buffer] : outputs) { - if (!buffer) - return -EINVAL; - if (index >= streams_.size()) - return -EINVAL; - if (mask & (1 << index)) - return -EINVAL; - - mask |= 1 << index; - } - - /* Queue the input and output buffers to all the streams. */ - for (auto [index, buffer] : outputs) { - ret = streams_[index].queueBuffers(input, buffer); - if (ret < 0) - return ret; - } - - /* - * Add the input buffer to the queue, with the number of streams as a - * reference count. Completion of the input buffer will be signalled by - * the stream that releases the last reference. - */ - queue_.emplace(std::piecewise_construct, - std::forward_as_tuple(input), - std::forward_as_tuple(outputs.size())); - - return 0; -} - -} /* namespace libcamera */ |