diff options
Diffstat (limited to 'src/cam/buffer_writer.cpp')
| -rw-r--r-- | src/cam/buffer_writer.cpp | 27 |
1 files changed, 22 insertions, 5 deletions
diff --git a/src/cam/buffer_writer.cpp b/src/cam/buffer_writer.cpp index 1d7366c8..c5a5eb46 100644 --- a/src/cam/buffer_writer.cpp +++ b/src/cam/buffer_writer.cpp @@ -22,6 +22,27 @@ BufferWriter::BufferWriter(const std::string &pattern) { } +BufferWriter::~BufferWriter() +{ + for (auto &iter : mappedBuffers_) { + void *memory = iter.second.first; + unsigned int length = iter.second.second; + munmap(memory, length); + } + mappedBuffers_.clear(); +} + +void BufferWriter::mapBuffer(FrameBuffer *buffer) +{ + for (const FrameBuffer::Plane &plane : buffer->planes()) { + void *memory = mmap(NULL, plane.length, PROT_READ, MAP_SHARED, + plane.fd.fd(), 0); + + mappedBuffers_[plane.fd.fd()] = + std::make_pair(memory, plane.length); + } +} + int BufferWriter::write(FrameBuffer *buffer, const std::string &streamName) { std::string filename; @@ -44,9 +65,7 @@ int BufferWriter::write(FrameBuffer *buffer, const std::string &streamName) return -errno; for (const FrameBuffer::Plane &plane : buffer->planes()) { - /* \todo Once the FrameBuffer is done cache mapped memory. */ - void *data = mmap(NULL, plane.length, PROT_READ, MAP_SHARED, - plane.fd.fd(), 0); + void *data = mappedBuffers_[plane.fd.fd()].first; unsigned int length = plane.length; ret = ::write(fd, data, length); @@ -61,8 +80,6 @@ int BufferWriter::write(FrameBuffer *buffer, const std::string &streamName) << length << std::endl; break; } - - munmap(data, length); } close(fd); |