diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/libcamera/pipeline/ipu3/ipu3.cpp | 154 |
1 files changed, 140 insertions, 14 deletions
diff --git a/src/libcamera/pipeline/ipu3/ipu3.cpp b/src/libcamera/pipeline/ipu3/ipu3.cpp index 030135f4..34bfc2a0 100644 --- a/src/libcamera/pipeline/ipu3/ipu3.cpp +++ b/src/libcamera/pipeline/ipu3/ipu3.cpp @@ -40,6 +40,7 @@ public: V4L2Device *dev; unsigned int pad; std::string name; + BufferPool *pool; }; ImgUDevice() @@ -65,6 +66,10 @@ public: int configureOutput(ImgUOutput *output, const StreamConfiguration &config); + int importBuffers(BufferPool *pool); + int exportBuffers(ImgUOutput *output, BufferPool *pool); + void freeBuffers(); + unsigned int index_; std::string name_; MediaDevice *media_; @@ -75,11 +80,16 @@ public: ImgUOutput viewfinder_; ImgUOutput stat_; /* \todo Add param video device for 3A tuning */ + + BufferPool vfPool_; + BufferPool statPool_; }; class CIO2Device { public: + static constexpr unsigned int CIO2_BUFFER_COUNT = 4; + CIO2Device() : output_(nullptr), csi2_(nullptr), sensor_(nullptr) { @@ -96,6 +106,9 @@ public: int configure(const StreamConfiguration &config, V4L2DeviceFormat *outputFormat); + BufferPool *exportBuffers(); + void freeBuffers(); + static int mediaBusToFormat(unsigned int code); V4L2Device *output_; @@ -105,6 +118,8 @@ public: /* Maximum sizes and the mbus code used to produce them. */ unsigned int mbusCode_; Size maxSize_; + + BufferPool pool_; }; class PipelineHandlerIPU3 : public PipelineHandler @@ -268,18 +283,41 @@ int PipelineHandlerIPU3::configureStreams(Camera *camera, int PipelineHandlerIPU3::allocateBuffers(Camera *camera, Stream *stream) { - const StreamConfiguration &cfg = stream->configuration(); IPU3CameraData *data = cameraData(camera); - V4L2Device *cio2 = data->cio2_.output_; + CIO2Device *cio2 = &data->cio2_; + ImgUDevice *imgu = data->imgu_; + int ret; - if (!cfg.bufferCount) - return -EINVAL; + /* Share buffers between CIO2 output and ImgU input. */ + BufferPool *pool = cio2->exportBuffers(); + if (!pool) + return -ENOMEM; - int ret = cio2->exportBuffers(&stream->bufferPool()); - if (ret) { - LOG(IPU3, Error) << "Failed to request memory"; + ret = imgu->importBuffers(pool); + if (ret) + return ret; + + /* Export ImgU output buffers to the stream's pool. */ + ret = imgu->exportBuffers(&imgu->output_, &stream->bufferPool()); + if (ret) + return ret; + + /* + * Reserve memory in viewfinder and stat output devices. Use the + * same number of buffers as the ones requested for the output + * stream. + */ + unsigned int bufferCount = stream->bufferPool().count(); + + imgu->viewfinder_.pool->createBuffers(bufferCount); + ret = imgu->exportBuffers(&imgu->viewfinder_, imgu->viewfinder_.pool); + if (ret) + return ret; + + imgu->stat_.pool->createBuffers(bufferCount); + ret = imgu->exportBuffers(&imgu->stat_, imgu->stat_.pool); + if (ret) return ret; - } return 0; } @@ -287,13 +325,9 @@ int PipelineHandlerIPU3::allocateBuffers(Camera *camera, Stream *stream) int PipelineHandlerIPU3::freeBuffers(Camera *camera, Stream *stream) { IPU3CameraData *data = cameraData(camera); - V4L2Device *cio2 = data->cio2_.output_; - int ret = cio2->releaseBuffers(); - if (ret) { - LOG(IPU3, Error) << "Failed to release memory"; - return ret; - } + data->cio2_.freeBuffers(); + data->imgu_->freeBuffers(); return 0; } @@ -553,6 +587,7 @@ int ImgUDevice::init(MediaDevice *media, unsigned int index) viewfinder_.pad = PAD_VF; viewfinder_.name = "viewfinder"; + viewfinder_.pool = &vfPool_; stat_.dev = V4L2Device::fromEntityName(media, name_ + " 3a stat"); ret = stat_.dev->open(); @@ -561,6 +596,7 @@ int ImgUDevice::init(MediaDevice *media, unsigned int index) stat_.pad = PAD_STAT; stat_.name = "stat"; + stat_.pool = &statPool_; return 0; } @@ -665,6 +701,69 @@ int ImgUDevice::configureOutput(ImgUOutput *output, return 0; } +/** + * \brief Import buffers from \a pool into the ImgU input + * \param[in] pool The buffer pool to import + * + * \return 0 on success or a negative error code otherwise + */ +int ImgUDevice::importBuffers(BufferPool *pool) +{ + int ret = input_->importBuffers(pool); + if (ret) { + LOG(IPU3, Error) << "Failed to import ImgU input buffers"; + return ret; + } + + return 0; +} + +/** + * \brief Export buffers from \a output to the provided \a pool + * \param[in] output The ImgU output device + * \param[in] pool The buffer pool where to export buffers + * + * Export memory buffers reserved in the video device memory associated with + * \a output id to the buffer pool provided as argument. + * + * \return 0 on success or a negative error code otherwise + */ +int ImgUDevice::exportBuffers(ImgUOutput *output, BufferPool *pool) +{ + int ret = output->dev->exportBuffers(pool); + if (ret) { + LOG(IPU3, Error) << "Failed to export ImgU " + << output->name << " buffers"; + return ret; + } + + return 0; +} + +/** + * \brief Release buffers for all the ImgU video devices + */ +void ImgUDevice::freeBuffers() +{ + int ret; + + ret = output_.dev->releaseBuffers(); + if (ret) + LOG(IPU3, Error) << "Failed to release ImgU output buffers"; + + ret = stat_.dev->releaseBuffers(); + if (ret) + LOG(IPU3, Error) << "Failed to release ImgU stat buffers"; + + ret = viewfinder_.dev->releaseBuffers(); + if (ret) + LOG(IPU3, Error) << "Failed to release ImgU viewfinder buffers"; + + ret = input_->releaseBuffers(); + if (ret) + LOG(IPU3, Error) << "Failed to release ImgU input buffers"; +} + /*------------------------------------------------------------------------------ * CIO2 Device */ @@ -831,6 +930,33 @@ int CIO2Device::configure(const StreamConfiguration &config, return 0; } +/** + * \brief Allocate CIO2 memory buffers and export them in a BufferPool + * + * Allocate memory buffers in the CIO2 video device and export them to + * a buffer pool that can be imported by another device. + * + * \return The buffer pool with export buffers on success or nullptr otherwise + */ +BufferPool *CIO2Device::exportBuffers() +{ + pool_.createBuffers(CIO2_BUFFER_COUNT); + + int ret = output_->exportBuffers(&pool_); + if (ret) { + LOG(IPU3, Error) << "Failed to export CIO2 buffers"; + return nullptr; + } + + return &pool_; +} + +void CIO2Device::freeBuffers() +{ + if (output_->releaseBuffers()) + LOG(IPU3, Error) << "Failed to release CIO2 buffers"; +} + int CIO2Device::mediaBusToFormat(unsigned int code) { switch (code) { |