NekoCWD/libcamera
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ipa: rkisp1: Use offset in mapping IPABuffer

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IPABuffer is represented by FrameBuffer. FrameBuffer::Plane has
now an offset. This uses the offset variable to map the IPABuffer.
The mapped IPABuffer is represented and managed as MappedFrameBuffer.

Signed-off-by: Hirokazu Honda <hiroh@chromium.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
This commit is contained in:
Hirokazu Honda 2021-08-26 20:25:34 +09:00 • committed by Laurent Pinchart
parent 470513b6a7
commit 73994ec6bc
1 changed files with 13 additions and 20 deletions
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33
src/ipa/rkisp1/rkisp1.cpp
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@ -10,7 +10,6 @@
#include <queue>
#include <stdint.h>
#include <string.h>
#include <sys/mman.h>
#include <linux/rkisp1-config.h>
#include <linux/v4l2-controls.h>
@ -24,6 +23,8 @@
#include <libcamera/ipa/rkisp1_ipa_interface.h>
#include <libcamera/request.h>
#include <libcamera/internal/mapped_framebuffer.h>
namespace libcamera {
LOG_DEFINE_CATEGORY(IPARkISP1)
@ -54,7 +55,7 @@ private:
void metadataReady(unsigned int frame, unsigned int aeState);
std::map<unsigned int, FrameBuffer> buffers_;
std::map<unsigned int, void *> buffersMemory_;
std::map<unsigned int, MappedFrameBuffer> mappedBuffers_;
ControlInfoMap ctrls_;
@ -160,22 +161,13 @@ void IPARkISP1::mapBuffers(const std::vector<IPABuffer> &buffers)
std::forward_as_tuple(buffer.planes));
const FrameBuffer &fb = elem.first->second;
/*
* \todo Provide a helper to mmap() buffers (possibly exposed
* to applications).
*/
buffersMemory_[buffer.id] = mmap(NULL,
fb.planes()[0].length,
PROT_READ | PROT_WRITE,
MAP_SHARED,
fb.planes()[0].fd.fd(),
0);
if (buffersMemory_[buffer.id] == MAP_FAILED) {
int ret = -errno;
MappedFrameBuffer mappedBuffer(&fb, MappedFrameBuffer::MapFlag::ReadWrite);
if (!mappedBuffer.isValid()) {
LOG(IPARkISP1, Fatal) << "Failed to mmap buffer: "
<< strerror(-ret);
<< strerror(mappedBuffer.error());
}
mappedBuffers_.emplace(buffer.id, std::move(mappedBuffer));
}
}
@ -186,8 +178,7 @@ void IPARkISP1::unmapBuffers(const std::vector<unsigned int> &ids)
if (fb == buffers_.end())
continue;
munmap(buffersMemory_[id], fb->second.planes()[0].length);
buffersMemory_.erase(id);
mappedBuffers_.erase(id);
buffers_.erase(id);
}
}
@ -200,7 +191,8 @@ void IPARkISP1::processEvent(const RkISP1Event &event)
unsigned int bufferId = event.bufferId;
const rkisp1_stat_buffer *stats =
static_cast<rkisp1_stat_buffer *>(buffersMemory_[bufferId]);
reinterpret_cast<rkisp1_stat_buffer *>(
mappedBuffers_.at(bufferId).maps()[0].data());
updateStatistics(frame, stats);
break;
@ -210,7 +202,8 @@ void IPARkISP1::processEvent(const RkISP1Event &event)
unsigned int bufferId = event.bufferId;
rkisp1_params_cfg *params =
static_cast<rkisp1_params_cfg *>(buffersMemory_[bufferId]);
reinterpret_cast<rkisp1_params_cfg *>(
mappedBuffers_.at(bufferId).maps()[0].data());
queueRequest(frame, params, event.controls);
break;