parent
3b44f3ae66
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9cab2c3722
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/************************************************************************************
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* videodev-dumpfile:
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* raw videodump input file support. It will scan the directory givin by the command
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* line argument -rd DIRECTORY and for each it will create an own device. This file
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* will be read in a loop.
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*
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* This is needed only for debugging.
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************************************************************************************/
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#include <sys/types.h>
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#include <dirent.h>
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#include <ctype.h>
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#include <fcntl.h>
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#include <arpa/inet.h>
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#include "convert.h"
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#include "configuration.h"
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#include "videodev-dumpfile.h"
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VideoDev_Dumpfile::VideoDev_Dumpfile() {
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printf ("%s:%d %s\n", __FILE__, __LINE__, __FUNCTION__);
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fd = -1;
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w = 0;
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h = 0;
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pixformat = 0;
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inframe = NULL;
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inframe_size = 0;
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inframe_maxsize = 0;
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inframe_nexttime = 0;
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};
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VideoDev_Dumpfile::~VideoDev_Dumpfile() {
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printf ("%s:%d %s\n", __FILE__, __LINE__, __FUNCTION__);
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if (running > 0) CaptureStop();
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Close();
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}
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/*
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* searchs in the given path for any videodump files and present them as
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* video device.
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*/
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int VideoDev_Dumpfile::GetDeviceList(std::list<std::string> *list) {
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std::string device;
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DIR *dir;
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struct dirent *de = NULL;
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char fname[256];
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int i;
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printf ("%s:%d %s\n", __FILE__, __LINE__, __FUNCTION__);
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if (list == NULL || config.readdumppath == NULL) return 0;
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if ((dir = opendir (config.readdumppath)) == NULL) {
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printf ("%s:%d could not read directory '%s'\n", __FILE__, __LINE__, config.readdumppath);
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return 0;
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}
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while ((de = readdir (dir))) {
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if (de->d_type & DT_REG) {
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for (i = 0; i < 255 && de->d_name[i] != 0; i++) fname[i] = toupper(de->d_name[i]);
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fname[i] = 0;
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if (strstr (fname, ".VIDEODUMP") != NULL) {
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device = (std::string) "VIDEODUMP " + (std::string) de->d_name;
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list->push_back(device);
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}
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}
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}
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closedir(dir);
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return 1;
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}
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/*
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* Open Device
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* prepare the buffer, InitMMAP and read all controls
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*/
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int VideoDev_Dumpfile::Open() {
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std::string fname = config.readdumppath;
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fname = fname + "/" + conf_device;
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uint32_t inbuf[3];
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int i;
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printf ("%s:%d %s file %s\n", __FILE__, __LINE__, __FUNCTION__, fname.c_str());
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if (fd >= 0) close (fd);
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if ((fd = open(fname.c_str(), O_RDONLY)) == -1) {
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printf ("%s:%d could not open file '%s' error:%s\n", __FILE__, __LINE__, fname.c_str(), strerror(errno));
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return VDEV_STATUS_ERROR;
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}
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//
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// read header
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if (read (fd, inbuf, 12) != 12) {
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printf ("%s:%d could not read all header data.\n", __FILE__, __LINE__);
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close (fd);
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fd = -1;
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return VDEV_STATUS_ERROR;
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}
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i = 0;
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w = ntohl(inbuf[i++]);
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h = ntohl(inbuf[i++]);
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pixformat = ntohl(inbuf[i++]);
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return VDEV_STATUS_OK;
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};
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/*
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* Close Device
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* Free videobuffer
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*/
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int VideoDev_Dumpfile::Close() {
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printf ("%s:%d %s\n", __FILE__, __LINE__, __FUNCTION__);
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if (fd >= 0) {
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close(fd);
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fd = -1;
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}
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return VDEV_STATUS_OK;
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};
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/*****************************************************************************************************
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* VideoGrabbing
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*/
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/*
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* send the start capture signal to the cam
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*/
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int VideoDev_Dumpfile::CaptureStart() {
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printf ("%s:%d %s\n", __FILE__, __LINE__, __FUNCTION__);
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Close();
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if (Open() != VDEV_STATUS_OK) return VDEV_STATUS_ERROR;
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// read timestamp and first header and frame
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gettimeofday(&starttv, NULL);
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ConvertStart(&cdata, pixformat);
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ReadFrame();
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return VDEV_STATUS_OK;
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};
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int VideoDev_Dumpfile::CaptureStop() {
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printf ("%s:%d %s\n", __FILE__, __LINE__, __FUNCTION__);
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if (fd >= 0) {
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close(fd);
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fd = -1;
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}
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if (inframe != NULL) {
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free (inframe);
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inframe_size = 0;
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inframe = NULL;
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}
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ConvertStop(&cdata, pixformat);
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return VDEV_STATUS_OK;
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};
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/*
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* try to grab one frame and convert it into RGB32.
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* If something goes wrong return an error code.
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* Return code VDEV_STATUS_AGAIN is not an error. There was no video image ready to read.
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*/
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int VideoDev_Dumpfile::Grab(VideoFrame *vf) {
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struct timeval curtv;
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unsigned int diff = 0;
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if (fd == -1) return VDEV_STATUS_ERROR;
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//
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// is it time?
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do {
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gettimeofday(&curtv, NULL);
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diff = 1000 * (curtv.tv_sec - starttv.tv_sec) +
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(curtv.tv_usec - starttv.tv_usec) / 1000;
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if (diff < inframe_nexttime)
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usleep ((inframe_nexttime-diff)*1000);
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} while (diff < inframe_nexttime);
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LockMutex();
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Convert(&cdata, vf, inframe, inframe_size, pixformat, w, h);
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UnLockMutex();
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//
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// read next frame
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ReadFrame();
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return VDEV_STATUS_OK;
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}
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/*****************************************************************************************************
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* Read Frame
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*/
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int VideoDev_Dumpfile::ReadFrame() {
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uint32_t inbuf[2];
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if (fd < 0) return VDEV_STATUS_ERROR;
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// read header
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if (read (fd, inbuf, 4*2) != 4*2) {
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printf ("%s:%d could not read frame header\n", __FILE__, __LINE__);
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Close();
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}
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inframe_size = ntohl(inbuf[0]);
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inframe_nexttime = ntohl(inbuf[1]);
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// read header
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if (inframe == NULL) {
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inframe = (unsigned char*) malloc (inframe_size);
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inframe_maxsize = inframe_size;
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}
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else if (inframe_maxsize < inframe_size) {
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inframe = (unsigned char*) realloc (inframe, inframe_size);
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inframe_maxsize = inframe_size;
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}
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// allocate memory and read frame
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if (inframe == NULL) {
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Close();
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printf ("%s:%d cloud not allocate enought memory\n", __FILE__, __LINE__);
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return VDEV_CBSTATUS_ERROR;
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}
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if (read (fd, inframe, inframe_size) != inframe_size) {
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printf ("%s:%d could not read frame\n", __FILE__, __LINE__);
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Close();
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}
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return VDEV_STATUS_OK;
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}
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/*****************************************************************************************************
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* Controls
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*/
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/*
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* set video control identified by id
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*/
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int VideoDev_Dumpfile::SetDevCtrl(unsigned int id, int value) {
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return VDEV_STATUS_OK;
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};
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/*
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* get video control identified by id
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*/
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int VideoDev_Dumpfile::GetDevCtrl(unsigned int id, int *value) {
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return VDEV_STATUS_OK;
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};
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@ -0,0 +1,60 @@
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#ifndef _H_VIDEODEV_DUMPFILE_H_
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#define _H_VIDEODEV_DUMPFILE_H_
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#include <stdint.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <getopt.h>
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#include <sys/ioctl.h>
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#include <sys/time.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/mman.h>
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#include <linux/videodev2.h>
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#include <list>
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#include <string>
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#include "convert.h"
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#include "gui.h"
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#include "videodev.h"
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class VideoDev_Dumpfile: public VideoDev {
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private:
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ConvertData cdata;
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int fd;
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uint32_t w;
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uint32_t h;
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uint32_t pixformat;
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struct timeval starttv;
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unsigned char *inframe;
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uint32_t inframe_nexttime;
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int inframe_maxsize;
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int inframe_size;
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int Grab(VideoFrame *vf);
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int Open();
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int Close();
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int CaptureStart();
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int CaptureStop();
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int SetDevCtrl(unsigned int id, int value);
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int GetDevCtrl(unsigned int id, int *value);
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int ReadFrame();
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public:
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VideoDev_Dumpfile();
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~VideoDev_Dumpfile();
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int GetDeviceList(std::list<std::string> *list);
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int GetDeviceFormats(string device, std::list<string> *formats) { return VDEV_STATUS_OK; };
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int GetDeviceResolutions(string device, std::list<string> *formats) { return VDEV_STATUS_OK; };
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};
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#endif
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