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examples: Remove heap allocation from C++ examples

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Cleanup of UPM C++ examples.  Switched from heap allocation to
stack allocation when possible.  This simplifies the samples since it
removes the need for explicit memory management.  A script was used to
identify and replace pointer use.  To simplify the replace script, I
re-formatted the C++ examples using the UPM .clang-format file.
Unfortuantely this changes the look of the UPM C++ examples to a large
degree.  However, examples will now have a standard look/feel and
uniform formatting.

    * Ran clang-format w/provided UPM .clang-format file
    * Removed new's/delete's whenever possible (left those in interface
      examples)
    * Added IIO sensor library implementation of callback void* arg
    * Converted all sleeps to upm defined delays (added header when
      necessary)
    * Scrubbed CXX example includes

Signed-off-by: Noel Eck <noel.eck@intel.com>
This commit is contained in:
Noel Eck
2017-08-30 15:00:29 -07:00
committed by Mihai Tudor Panu
parent bd6e4ec786
commit 5cefe7f5f3
290 changed files with 7976 additions and 8520 deletions
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53
examples/c++/vcap.cxx
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@@ -22,49 +22,48 @@
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <unistd.h>
#include <iostream>
#include <string>
#include "vcap.hpp"
using namespace std;
int main(int argc, char **argv)
int
main(int argc, char** argv)
{
//! [Interesting]
//! [Interesting]
string defaultDev = "/dev/video0";
string defaultDev = "/dev/video0";
// if an argument was specified, use it as the device instead
if (argc > 1)
defaultDev = string(argv[1]);
// if an argument was specified, use it as the device instead
if (argc > 1)
defaultDev = string(argv[1]);
cout << "Using device " << defaultDev << endl;
cout << "Initializing..." << endl;
cout << "Using device " << defaultDev << endl;
cout << "Initializing..." << endl;
// Instantiate an VCAP instance, using the specified video device
upm::VCAP *sensor = new upm::VCAP(defaultDev);
// Instantiate an VCAP instance, using the specified video device
upm::VCAP sensor(defaultDev);
// enable some debug/verbose output
sensor->setDebug(true);
// enable some debug/verbose output
sensor.setDebug(true);
// This is just a hint. The kernel can change this to a lower
// resolution that the hardware supports. Use getWidth() and
// getHeight() methods to see what the kernel actually chose if you
// care.
sensor->setResolution(1920, 1080);
// This is just a hint. The kernel can change this to a lower
// resolution that the hardware supports. Use getWidth() and
// getHeight() methods to see what the kernel actually chose if you
// care.
sensor.setResolution(1920, 1080);
// capture an image
sensor->captureImage();
// capture an image
sensor.captureImage();
// convert and save it as a jpeg
sensor->saveImage("video-img1.jpg");
// convert and save it as a jpeg
sensor.saveImage("video-img1.jpg");
cout << "Exiting..." << endl;
cout << "Exiting..." << endl;
delete sensor;
//! [Interesting]
//! [Interesting]
return 0;
return 0;
}