Message ID | 20200715140703.566298-11-naush@raspberrypi.com |
---|---|
State | Superseded |
Headers | show |
Series |
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Related | show |
On Wed, 15 Jul 2020 at 15:07, Naushir Patuck <naush@raspberrypi.com> wrote: > > Handle the case where a FrameBuffer that has been externally allocated > (i.e. not through the v4l2 video device) is passed into a Request. > > We must store the buffer pointer in our internal buffer list to identify > when used, as well as mmap the buffer in the IPA if needed. > > Signed-off-by: Naushir Patuck <naush@raspberrypi.com> > --- > .../pipeline/raspberrypi/raspberrypi.cpp | 90 +++++++++++-------- > .../pipeline/raspberrypi/rpi_stream.cpp | 5 ++ > .../pipeline/raspberrypi/rpi_stream.h | 1 + > 3 files changed, 61 insertions(+), 35 deletions(-) > > diff --git a/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp b/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp > index fc6fbfc3..a32ec687 100644 > --- a/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp > +++ b/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp > @@ -172,8 +172,8 @@ public: > RPi::RPiDevice<Isp, 4> isp_; > /* The vector below is just for convenience when iterating over all streams. */ > std::vector<RPi::RPiStream *> streams_; > - /* Buffers passed to the IPA. */ > - std::vector<IPABuffer> ipaBuffers_; > + /* Stores the ids of the buffers mapped in the IPA. */ > + std::vector<unsigned int> ipaBufferIds_; > > /* VCSM allocation helper. */ > ::RPi::Vcsm vcsm_; > @@ -193,7 +193,6 @@ public: > std::queue<FrameBuffer *> bayerQueue_; > std::queue<FrameBuffer *> embeddedQueue_; > std::deque<Request *> requestQueue_; > - > unsigned int dropFrameCount_; > > private: > @@ -246,6 +245,8 @@ private: > int queueAllBuffers(Camera *camera); > int prepareBuffers(Camera *camera); > void freeBuffers(Camera *camera); > + void mapBuffers(Camera *camera, const std::vector<FrameBuffer *> &buffers, > + unsigned int startId); > > MediaDevice *unicam_; > MediaDevice *isp_; > @@ -730,18 +731,36 @@ int PipelineHandlerRPi::queueRequestDevice(Camera *camera, Request *request) > > /* Push all buffers supplied in the Request to the respective streams. */ > for (auto stream : data->streams_) { > - if (stream->isExternal()) { > - FrameBuffer *buffer = request->findBuffer(stream); > + if (!stream->isExternal()) > + continue; > + > + FrameBuffer *buffer = request->findBuffer(stream); > + if (stream->getBufferIndex(buffer) == -1) { This should check for buffer being valid, else we could dereference a nullptr! > /* > - * If we have been asked to drop frames by the IPA, passing > - * in a nullptr here will queue an internally allocated buffer. > - * The Request buffer will be stored in another queue to be > - * queued to the device - in sync with the Request. > + * This buffer is not recognised, so it must have been allocated > + * outside the v4l2 device. Store it in the stream buffer list > + * so we can track it. > */ > - int ret = stream->queueBuffer(data->dropFrameCount_ ? nullptr : buffer); > - if (ret) > - return ret; > + stream->setExternalBuffer(buffer); > + > + /* Also get the IPA to mmap it if needed. */ > + if (stream == &data->unicam_[Unicam::Embedded]) { > + mapBuffers(camera, { buffer }, > + RPiIpaMask::EMBEDDED_DATA | (stream->getBuffers().size() - 1)); > + } else if (stream == &data->isp_[Isp::Stats]) { > + mapBuffers(camera, { buffer }, > + RPiIpaMask::STATS | (stream->getBuffers().size() - 1)); > + } > } > + /* > + * If we have been asked to drop frames by the IPA, passing > + * in a nullptr here will queue an internally allocated buffer. > + * The Request buffer will be stored in another queue to be > + * queued to the device - in sync with the Request. > + */ > + int ret = stream->queueBuffer(data->dropFrameCount_ ? nullptr : buffer); > + if (ret) > + return ret; > } > > /* Push the request to the back of the queue. */ > @@ -919,7 +938,6 @@ int PipelineHandlerRPi::queueAllBuffers(Camera *camera) > int PipelineHandlerRPi::prepareBuffers(Camera *camera) > { > RPiCameraData *data = cameraData(camera); > - unsigned int index; > int ret; > > /* > @@ -939,42 +957,44 @@ int PipelineHandlerRPi::prepareBuffers(Camera *camera) > return ret; > } > > + /* > + * Pass the stats and embedded data buffers to the IPA. No other > + * buffers need to be passed. > + */ > + mapBuffers(camera, data->isp_[Isp::Stats].getBuffers(), RPiIpaMask::STATS); > + mapBuffers(camera, data->unicam_[Unicam::Embedded].getBuffers(), RPiIpaMask::EMBEDDED_DATA); > + > + return 0; > +} > + > +void PipelineHandlerRPi::mapBuffers(Camera *camera, const std::vector<FrameBuffer *> &buffers, > + unsigned int startId) > +{ > + RPiCameraData *data = cameraData(camera); > + std::vector<IPABuffer> ipaBuffers; > + unsigned int id = startId; > /* > * Link the FrameBuffers with the index of their position in the vector > - * stored in the RPi stream object. > + * stored in the RPi stream object - along with an identifer mask. > * > * This will allow us to identify buffers passed between the pipeline > * handler and the IPA. > */ > - index = 0; > - for (auto const &b : data->isp_[Isp::Stats].getBuffers()) { > - data->ipaBuffers_.push_back({ .id = RPiIpaMask::STATS | index, > - .planes = b->planes() }); > - index++; > + for (auto const &b : buffers) { > + ipaBuffers.push_back({ .id = id, .planes = b->planes() }); > + data->ipaBufferIds_.push_back(id); > + id++; > } > > - index = 0; > - for (auto const &b : data->unicam_[Unicam::Embedded].getBuffers()) { > - data->ipaBuffers_.push_back({ .id = RPiIpaMask::EMBEDDED_DATA | index, > - .planes = b->planes() }); > - index++; > - } > - > - data->ipa_->mapBuffers(data->ipaBuffers_); > - > - return 0; > + data->ipa_->mapBuffers(ipaBuffers); > } > > void PipelineHandlerRPi::freeBuffers(Camera *camera) > { > RPiCameraData *data = cameraData(camera); > > - std::vector<unsigned int> ids; > - for (IPABuffer &ipabuf : data->ipaBuffers_) > - ids.push_back(ipabuf.id); > - > - data->ipa_->unmapBuffers(ids); > - data->ipaBuffers_.clear(); > + data->ipa_->unmapBuffers(data->ipaBufferIds_); > + data->ipaBufferIds_.clear(); > > for (auto const stream : data->streams_) > stream->releaseBuffers(); > diff --git a/src/libcamera/pipeline/raspberrypi/rpi_stream.cpp b/src/libcamera/pipeline/raspberrypi/rpi_stream.cpp > index 97f87ad7..862a094a 100644 > --- a/src/libcamera/pipeline/raspberrypi/rpi_stream.cpp > +++ b/src/libcamera/pipeline/raspberrypi/rpi_stream.cpp > @@ -48,6 +48,11 @@ void RPiStream::setExternalBuffers(std::vector<std::unique_ptr<FrameBuffer>> *bu > [](std::unique_ptr<FrameBuffer> &b) { return b.get(); }); > } > > +void RPiStream::setExternalBuffer(FrameBuffer *buffer) > +{ > + bufferList_.push_back(buffer); > +} > + > const std::vector<FrameBuffer *> &RPiStream::getBuffers() const > { > return bufferList_; > diff --git a/src/libcamera/pipeline/raspberrypi/rpi_stream.h b/src/libcamera/pipeline/raspberrypi/rpi_stream.h > index 16b90fac..266441df 100644 > --- a/src/libcamera/pipeline/raspberrypi/rpi_stream.h > +++ b/src/libcamera/pipeline/raspberrypi/rpi_stream.h > @@ -41,6 +41,7 @@ public: > void reset(); > std::string name() const; > void setExternalBuffers(std::vector<std::unique_ptr<FrameBuffer>> *buffers); > + void setExternalBuffer(FrameBuffer *buffer); > const std::vector<FrameBuffer *> &getBuffers() const; > void releaseBuffers(); > int prepareBuffers(unsigned int count); > -- > 2.25.1 >
diff --git a/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp b/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp index fc6fbfc3..a32ec687 100644 --- a/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp +++ b/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp @@ -172,8 +172,8 @@ public: RPi::RPiDevice<Isp, 4> isp_; /* The vector below is just for convenience when iterating over all streams. */ std::vector<RPi::RPiStream *> streams_; - /* Buffers passed to the IPA. */ - std::vector<IPABuffer> ipaBuffers_; + /* Stores the ids of the buffers mapped in the IPA. */ + std::vector<unsigned int> ipaBufferIds_; /* VCSM allocation helper. */ ::RPi::Vcsm vcsm_; @@ -193,7 +193,6 @@ public: std::queue<FrameBuffer *> bayerQueue_; std::queue<FrameBuffer *> embeddedQueue_; std::deque<Request *> requestQueue_; - unsigned int dropFrameCount_; private: @@ -246,6 +245,8 @@ private: int queueAllBuffers(Camera *camera); int prepareBuffers(Camera *camera); void freeBuffers(Camera *camera); + void mapBuffers(Camera *camera, const std::vector<FrameBuffer *> &buffers, + unsigned int startId); MediaDevice *unicam_; MediaDevice *isp_; @@ -730,18 +731,36 @@ int PipelineHandlerRPi::queueRequestDevice(Camera *camera, Request *request) /* Push all buffers supplied in the Request to the respective streams. */ for (auto stream : data->streams_) { - if (stream->isExternal()) { - FrameBuffer *buffer = request->findBuffer(stream); + if (!stream->isExternal()) + continue; + + FrameBuffer *buffer = request->findBuffer(stream); + if (stream->getBufferIndex(buffer) == -1) { /* - * If we have been asked to drop frames by the IPA, passing - * in a nullptr here will queue an internally allocated buffer. - * The Request buffer will be stored in another queue to be - * queued to the device - in sync with the Request. + * This buffer is not recognised, so it must have been allocated + * outside the v4l2 device. Store it in the stream buffer list + * so we can track it. */ - int ret = stream->queueBuffer(data->dropFrameCount_ ? nullptr : buffer); - if (ret) - return ret; + stream->setExternalBuffer(buffer); + + /* Also get the IPA to mmap it if needed. */ + if (stream == &data->unicam_[Unicam::Embedded]) { + mapBuffers(camera, { buffer }, + RPiIpaMask::EMBEDDED_DATA | (stream->getBuffers().size() - 1)); + } else if (stream == &data->isp_[Isp::Stats]) { + mapBuffers(camera, { buffer }, + RPiIpaMask::STATS | (stream->getBuffers().size() - 1)); + } } + /* + * If we have been asked to drop frames by the IPA, passing + * in a nullptr here will queue an internally allocated buffer. + * The Request buffer will be stored in another queue to be + * queued to the device - in sync with the Request. + */ + int ret = stream->queueBuffer(data->dropFrameCount_ ? nullptr : buffer); + if (ret) + return ret; } /* Push the request to the back of the queue. */ @@ -919,7 +938,6 @@ int PipelineHandlerRPi::queueAllBuffers(Camera *camera) int PipelineHandlerRPi::prepareBuffers(Camera *camera) { RPiCameraData *data = cameraData(camera); - unsigned int index; int ret; /* @@ -939,42 +957,44 @@ int PipelineHandlerRPi::prepareBuffers(Camera *camera) return ret; } + /* + * Pass the stats and embedded data buffers to the IPA. No other + * buffers need to be passed. + */ + mapBuffers(camera, data->isp_[Isp::Stats].getBuffers(), RPiIpaMask::STATS); + mapBuffers(camera, data->unicam_[Unicam::Embedded].getBuffers(), RPiIpaMask::EMBEDDED_DATA); + + return 0; +} + +void PipelineHandlerRPi::mapBuffers(Camera *camera, const std::vector<FrameBuffer *> &buffers, + unsigned int startId) +{ + RPiCameraData *data = cameraData(camera); + std::vector<IPABuffer> ipaBuffers; + unsigned int id = startId; /* * Link the FrameBuffers with the index of their position in the vector - * stored in the RPi stream object. + * stored in the RPi stream object - along with an identifer mask. * * This will allow us to identify buffers passed between the pipeline * handler and the IPA. */ - index = 0; - for (auto const &b : data->isp_[Isp::Stats].getBuffers()) { - data->ipaBuffers_.push_back({ .id = RPiIpaMask::STATS | index, - .planes = b->planes() }); - index++; + for (auto const &b : buffers) { + ipaBuffers.push_back({ .id = id, .planes = b->planes() }); + data->ipaBufferIds_.push_back(id); + id++; } - index = 0; - for (auto const &b : data->unicam_[Unicam::Embedded].getBuffers()) { - data->ipaBuffers_.push_back({ .id = RPiIpaMask::EMBEDDED_DATA | index, - .planes = b->planes() }); - index++; - } - - data->ipa_->mapBuffers(data->ipaBuffers_); - - return 0; + data->ipa_->mapBuffers(ipaBuffers); } void PipelineHandlerRPi::freeBuffers(Camera *camera) { RPiCameraData *data = cameraData(camera); - std::vector<unsigned int> ids; - for (IPABuffer &ipabuf : data->ipaBuffers_) - ids.push_back(ipabuf.id); - - data->ipa_->unmapBuffers(ids); - data->ipaBuffers_.clear(); + data->ipa_->unmapBuffers(data->ipaBufferIds_); + data->ipaBufferIds_.clear(); for (auto const stream : data->streams_) stream->releaseBuffers(); diff --git a/src/libcamera/pipeline/raspberrypi/rpi_stream.cpp b/src/libcamera/pipeline/raspberrypi/rpi_stream.cpp index 97f87ad7..862a094a 100644 --- a/src/libcamera/pipeline/raspberrypi/rpi_stream.cpp +++ b/src/libcamera/pipeline/raspberrypi/rpi_stream.cpp @@ -48,6 +48,11 @@ void RPiStream::setExternalBuffers(std::vector<std::unique_ptr<FrameBuffer>> *bu [](std::unique_ptr<FrameBuffer> &b) { return b.get(); }); } +void RPiStream::setExternalBuffer(FrameBuffer *buffer) +{ + bufferList_.push_back(buffer); +} + const std::vector<FrameBuffer *> &RPiStream::getBuffers() const { return bufferList_; diff --git a/src/libcamera/pipeline/raspberrypi/rpi_stream.h b/src/libcamera/pipeline/raspberrypi/rpi_stream.h index 16b90fac..266441df 100644 --- a/src/libcamera/pipeline/raspberrypi/rpi_stream.h +++ b/src/libcamera/pipeline/raspberrypi/rpi_stream.h @@ -41,6 +41,7 @@ public: void reset(); std::string name() const; void setExternalBuffers(std::vector<std::unique_ptr<FrameBuffer>> *buffers); + void setExternalBuffer(FrameBuffer *buffer); const std::vector<FrameBuffer *> &getBuffers() const; void releaseBuffers(); int prepareBuffers(unsigned int count);
Handle the case where a FrameBuffer that has been externally allocated (i.e. not through the v4l2 video device) is passed into a Request. We must store the buffer pointer in our internal buffer list to identify when used, as well as mmap the buffer in the IPA if needed. Signed-off-by: Naushir Patuck <naush@raspberrypi.com> --- .../pipeline/raspberrypi/raspberrypi.cpp | 90 +++++++++++-------- .../pipeline/raspberrypi/rpi_stream.cpp | 5 ++ .../pipeline/raspberrypi/rpi_stream.h | 1 + 3 files changed, 61 insertions(+), 35 deletions(-)