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cam: Add option to write raw frames to disk

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Use the helper BufferWriter to optionally write frames to disk as they
are captured.

Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
This commit is contained in:
Niklas Söderlund 2019-01-28 01:18:39 +01:00 • committed by Laurent Pinchart
parent 46ca8eeca0
commit 8b27416267
1 changed files with 23 additions and 0 deletions
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23
src/cam/main.cpp
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@ -13,6 +13,7 @@
#include <libcamera/libcamera.h> #include <libcamera/libcamera.h>
#include "buffer_writer.h"
#include "event_loop.h" #include "event_loop.h"
#include "options.h" #include "options.h"
@ -21,10 +22,12 @@ using namespace libcamera;
OptionsParser::Options options; OptionsParser::Options options;
std::shared_ptr<Camera> camera; std::shared_ptr<Camera> camera;
EventLoop *loop; EventLoop *loop;
BufferWriter *writer;
enum { enum {
OptCamera = 'c', OptCamera = 'c',
OptCapture = 'C', OptCapture = 'C',
OptFile = 'F',
OptFormat = 'f', OptFormat = 'f',
OptHelp = 'h', OptHelp = 'h',
OptList = 'l', OptList = 'l',
@ -52,6 +55,11 @@ static int parseOptions(int argc, char *argv[])
ArgumentRequired, "camera"); ArgumentRequired, "camera");
parser.addOption(OptCapture, OptionNone, parser.addOption(OptCapture, OptionNone,
"Capture until interrupted by user", "capture"); "Capture until interrupted by user", "capture");
parser.addOption(OptFile, OptionString,
"Write captured frames to disk\n"
"The first '#' character in the file name is expanded to the frame sequence number.\n"
"The default file name is 'frame-#.bin'.",
"file", ArgumentOptional, "filename");
parser.addOption(OptFormat, &formatKeyValue, parser.addOption(OptFormat, &formatKeyValue,
"Set format of the camera's first stream", "format"); "Set format of the camera's first stream", "format");
parser.addOption(OptHelp, OptionNone, "Display this help message", parser.addOption(OptHelp, OptionNone, "Display this help message",
@ -113,6 +121,9 @@ static void requestComplete(Request *request, const std::map<Stream *, Buffer *>
<< " fps: " << std::fixed << std::setprecision(2) << fps << " fps: " << std::fixed << std::setprecision(2) << fps
<< std::endl; << std::endl;
if (writer)
writer->write(buffer);
request = camera->createRequest(); request = camera->createRequest();
if (!request) { if (!request) {
std::cerr << "Can't create request" << std::endl; std::cerr << "Can't create request" << std::endl;
@ -240,7 +251,19 @@ int main(int argc, char **argv)
goto out; goto out;
} }
if (options.isSet(OptFile)) {
if (!options[OptFile].toString().empty())
writer = new BufferWriter(options[OptFile]);
else
writer = new BufferWriter();
}
capture(); capture();
if (options.isSet(OptFile)) {
delete writer;
writer = nullptr;
}
} }
if (camera) { if (camera) {