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Still playing with VfW... no real progress

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master
Stefan Jahn 3 years ago
parent 245c9f582a
commit 2a6b5b099f
1 changed files with 25 additions and 59 deletions
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80
videodev-vfw.cc
Unescape View File

@ -18,6 +18,7 @@
VideoDev_VFW::VideoDev_VFW() {
printf ("%s:%d %s\n", __FILE__, __LINE__, __FUNCTION__);
cap = NULL;
camid = -1;
};
@ -40,7 +41,8 @@ int VideoDev_VFW::GetDeviceList(std::list<std::string> *list) {
for(int i=0; i < 10; i++)
if(capGetDriverDescription(i, name, sizeof(name), desc, sizeof(desc))) {
std::string device;
device = "VfW " + to_string(i) + " " + (string)name + " [" + (string)desc + "]";
device = "VFW " + to_string(i) + " " + (string)name + " [" + (string)desc + "]";
printf ("%s:%d %s Found device '%s'\n", __FILE__, __LINE__, __FUNCTION__, device.c_str());
list->push_back(device);
}
@ -56,20 +58,22 @@ int VideoDev_VFW::GetDeviceList(std::list<std::string> *list) {
int VideoDev_VFW::Open() {
printf ("%s:%d %s\n", __FILE__, __LINE__, __FUNCTION__);
camid = atoi (conf_device.c_str());
printf ("%s:%d %s Opening VfW id %d\n", __FILE__, __LINE__, __FUNCTION__, camid);
printf ("%s:%d %s Opening VFW id %d\n", __FILE__, __LINE__, __FUNCTION__, camid);
cap = capCreateCaptureWindow("VfW", /*WS_CHILD|WS_VISIBLE*/0, 0, 0, 0, 0, 0/*HWND_MESSAGE*/, camid);
// connect to driver
cap = capCreateCaptureWindow("VFW", WS_CHILD|WS_VISIBLE, 0, 0, 700, 700, HWND_MESSAGE, camid);
if(!cap) {
printf ("%s:%d %s Could not open VfW id %d window\n", __FILE__, __LINE__, __FUNCTION__, camid);
printf ("%s:%d %s Could not open VFW id %d window\n", __FILE__, __LINE__, __FUNCTION__, camid);
return VDEV_STATUS_ERROR;
}
if(!capDriverConnect(cap, camid)) {
printf ("%s:%d %s Could not connect to VfW id %d\n", __FILE__, __LINE__, __FUNCTION__, camid);
printf ("%s:%d %s Could not connect to VFW id %d\n", __FILE__, __LINE__, __FUNCTION__, camid);
return VDEV_STATUS_ERROR;
}
// set capture format and size
capDlgVideoFormat(cap);
// get current valid width/height
@ -79,7 +83,9 @@ int VideoDev_VFW::Open() {
w = bi.bmiHeader.biWidth;
h = bi.bmiHeader.biHeight;
printf ("%s:%d %s Current capture size is %dx%d\n", __FILE__, __LINE__, __FUNCTION__, w, h);
inframe_pixfmt = convert_to_pixelformat(conf_format);
conf_format = convert_from_pixelformat(bi.bmiHeader.biCompression);
inframe_pixfmt = bi.bmiHeader.biCompression;
printf ("%s:%d %s Current capture format is %s\n", __FILE__, __LINE__, __FUNCTION__, conf_format.c_str());
// try to set the configured width/height
if(conf_width != -1) {
@ -110,8 +116,6 @@ int VideoDev_VFW::Open() {
}
}
printf ("%s:%d %s Current capture format is %s\n", __FILE__, __LINE__, __FUNCTION__, conf_format.c_str());
return VDEV_STATUS_OK;
};
@ -123,7 +127,11 @@ int VideoDev_VFW::Open() {
int VideoDev_VFW::Close() {
printf ("%s:%d %s\n", __FILE__, __LINE__, __FUNCTION__);
capDriverDisconnect(cap);
if(cap) {
capDriverDisconnect(cap);
DestroyWindow(cap);
cap = NULL;
}
return VDEV_STATUS_OK;
};
@ -157,12 +165,15 @@ int VideoDev_VFW::CaptureStart() {
printf ("%s:%d %s\n", __FILE__, __LINE__, __FUNCTION__);
capPreviewRate(cap, 50); // rate in ms
capPreview(cap, TRUE);
if(!capSetCallbackOnError(cap, VFW_error_callback)) {
printf ("%s:%d %s Could not set error callback to VfW id %d\n", __FILE__, __LINE__, __FUNCTION__, camid);
printf ("%s:%d %s Could not set error callback to VFW id %d\n", __FILE__, __LINE__, __FUNCTION__, camid);
}
if(!capSetCallbackOnFrame(cap, VFW_frame_callback)) {
printf ("%s:%d %s Could not set frame callback to VfW id %d\n", __FILE__, __LINE__, __FUNCTION__, camid);
printf ("%s:%d %s Could not set frame callback to VFW id %d\n", __FILE__, __LINE__, __FUNCTION__, camid);
}
ConvertStart(&cdata, inframe_pixfmt);
@ -207,51 +218,6 @@ int VideoDev_VFW::GetDeviceFormats(string device, std::list<string> *formats) {
printf ("%s:%d %s\n", __FILE__, __LINE__, __FUNCTION__);
camid = atoi (conf_device.c_str());
cap = capCreateCaptureWindow("VfW", /*WS_CHILD|WS_VISIBLE*/0, 0, 0, 0, 0, 0/*HWND_MESSAGE*/, camid);
if(!cap) {
printf ("%s:%d %s Could not open VfW id %d window\n", __FILE__, __LINE__, __FUNCTION__, camid);
return VDEV_STATUS_ERROR;
}
if(!capDriverConnect(cap, camid)) {
printf ("%s:%d %s Could not connect to VfW id %d\n", __FILE__, __LINE__, __FUNCTION__, camid);
return VDEV_STATUS_ERROR;
}
BITMAPINFO bi;
capGetVideoFormat(cap, &bi, sizeof(BITMAPINFO));
string vfwformat;
DWORD f = bi.bmiHeader.biCompression;
vfwformat = convert_from_pixelformat(f);
printf ("%s:%d %s Current capture format is %s\n", __FILE__, __LINE__, __FUNCTION__, vfwformat.c_str());
formats->push_back(vfwformat);
#if 0
int i = 0;
DWORD vfwformats[][2] = {{MAKEFOURCC('M','J','P','G'), V4L2_PIX_FMT_MJPEG},
{MAKEFOURCC('Y','U','V','2'), V4L2_PIX_FMT_YUV2},
{0, 0}};
while(vfwformats[i][0] != 0) {
bi.bmiHeader.biCompression = vfwformats[i][0];
if(capSetVideoFormat(cap, &bi, sizeof(BITMAPINFO))) {
vfwformat = convert_from_pixelformat(vfwformats[i][1]);
printf ("%s:%d %s Capture format %s works\n", __FILE__, __LINE__, __FUNCTION__, vfwformat.c_str());
formats->push_back(vfwformat.c_str());
}
else {
vfwformat = convert_from_pixelformat(vfwformats[i][1]);
printf ("%s:%d %s Capture format %s does not work\n", __FILE__, __LINE__, __FUNCTION__, vfwformat.c_str());
}
i++;
}
#endif
capDriverDisconnect(cap);
cap = NULL;
camid = -1;
return VDEV_STATUS_OK;
}

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