mirror of
https://github.com/hyperion-project/hyperion.ng.git
synced 2023-10-10 13:36:59 +02:00
* implement set videomode via json api * refactor grabbers: - new base class - move shared code to base class * fix osx * rework all cmakelist files with auto file collection. except leddevices (need further restructuring) * store current video and grabbing mode * add json stuff * remove grabbingmode - we do not want to expose it
155 lines
4.0 KiB
C++
Executable File
155 lines
4.0 KiB
C++
Executable File
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// STL includes
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#include <algorithm>
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#include <cassert>
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#include <iostream>
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// Linux includes
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#include <errno.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <sys/ioctl.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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// Local includes
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#include <utils/Logger.h>
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#include <grabber/AmlogicGrabber.h>
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// Flags copied from 'include/linux/amlogic/amports/amvideocap.h' at https://github.com/codesnake/linux-amlogic
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#define AMVIDEOCAP_IOC_MAGIC 'V'
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#define AMVIDEOCAP_IOW_SET_WANTFRAME_WIDTH _IOW(AMVIDEOCAP_IOC_MAGIC, 0x02, int)
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#define AMVIDEOCAP_IOW_SET_WANTFRAME_HEIGHT _IOW(AMVIDEOCAP_IOC_MAGIC, 0x03, int)
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#if HAVE_AML_HEADER
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#include <amcodec/amports/amstream.h>
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#else
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// Flags copied from 'include/linux/amlogic/amports/amvstream.h' at https://github.com/codesnake/linux-amlogic
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#define AMSTREAM_IOC_MAGIC 'S'
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#define AMSTREAM_IOC_GET_VIDEO_DISABLE _IOR(AMSTREAM_IOC_MAGIC, 0x48, unsigned long)
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#endif
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AmlogicGrabber::AmlogicGrabber(const unsigned width, const unsigned height)
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: Grabber("AMLOGICGRABBER", qMax(160u, width), qMax(160u, height)) // Minimum required width or height is 160
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, _amlogicCaptureDev(-1)
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{
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Debug(_log, "constructed(%d x %d)",_width,_height);
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}
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AmlogicGrabber::~AmlogicGrabber()
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{
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if (_amlogicCaptureDev != -1)
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{
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if (close(_amlogicCaptureDev) == -1)
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{
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Error(_log, "Failed to close device (%d - %s)", errno, strerror(errno));
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}
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_amlogicCaptureDev = -1;
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}
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}
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bool AmlogicGrabber::isVideoPlaying()
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{
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// TODO crop resulting image accroding member _videoMode
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// TODO add croping
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const QString videoDevice = "/dev/amvideo";
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// Open the video device
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int video_fd = open(QSTRING_CSTR(videoDevice), O_RDONLY);
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if (video_fd < 0)
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{
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Error(_log, "Failed to open video device(%s): %d - %s", QSTRING_CSTR(videoDevice), errno, strerror(errno));
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return false;
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}
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// Check the video disabled flag
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int videoDisabled;
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if (ioctl(video_fd, AMSTREAM_IOC_GET_VIDEO_DISABLE, &videoDisabled) == -1)
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{
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Error(_log, "Failed to retrieve video state from device: %d - %s", errno, strerror(errno));
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close(video_fd);
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return false;
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}
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// Make sure to close the device after use
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close(video_fd);
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return videoDisabled == 0;
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}
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int AmlogicGrabber::grabFrame(Image<ColorBgr> & image)
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{
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// resize the given image if needed
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if (image.width() != (unsigned)_width || image.height() != (unsigned)_height)
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{
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image.resize(_width, _height);
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}
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// Make sure video is playing, else there is nothing to grab
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if (!isVideoPlaying())
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{
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return -1;
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}
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// If the device is not open, attempt to open it
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if (_amlogicCaptureDev == -1)
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{
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_amlogicCaptureDev = open("/dev/amvideocap0", O_RDONLY, 0);
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// If the device is still not open, there is something wrong
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if (_amlogicCaptureDev == -1)
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{
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Error(_log,"Failed to open the AMLOGIC device (%d - %s):", errno, strerror(errno));
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return -1;
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}
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}
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if (ioctl(_amlogicCaptureDev, AMVIDEOCAP_IOW_SET_WANTFRAME_WIDTH, _width) == -1 ||
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ioctl(_amlogicCaptureDev, AMVIDEOCAP_IOW_SET_WANTFRAME_HEIGHT, _height) == -1)
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{
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// Failed to configure frame width
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Error(_log,"Failed to configure capture size (%d - %s)", errno, strerror(errno));
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close(_amlogicCaptureDev);
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_amlogicCaptureDev = -1;
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return -1;
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}
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// Read the snapshot into the memory
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void * image_ptr = image.memptr();
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const ssize_t bytesToRead = _width * _height * sizeof(ColorBgr);
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const ssize_t bytesRead = pread(_amlogicCaptureDev, image_ptr, bytesToRead, 0);
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if (bytesRead == -1)
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{
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Error(_log,"Read of device failed: %d - %s", errno, strerror(errno));
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close(_amlogicCaptureDev);
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_amlogicCaptureDev = -1;
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return -1;
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}
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else if (bytesToRead != bytesRead)
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{
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// Read of snapshot failed
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Error(_log,"Capture failed to grab entire image [bytesToRead(%d) != bytesRead(%d)]", bytesToRead, bytesRead);
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close(_amlogicCaptureDev);
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_amlogicCaptureDev = -1;
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return -1;
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}
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// For now we always close the device now and again
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static int readCnt = 0;
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++readCnt;
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if (readCnt > 20)
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{
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close(_amlogicCaptureDev);
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_amlogicCaptureDev = -1;
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readCnt = 0;
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}
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return 0;
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}
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