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Merge pull request #23469 from gottagofaster236:use_nv12_for_obs_camera

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This commit is contained in:
Alexander Alekhin 2023-04-10 13:39:15 +00:00
commit f9ce3f4b91
1 changed files with 15 additions and 9 deletions
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24
modules/videoio/src/cap_dshow.cpp
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@ -186,6 +186,7 @@ DEFINE_GUID(MEDIASUBTYPE_YV12,0x32315659,0x0000,0x0010,0x80,0x00,0x00,0xaa,0x00,
DEFINE_GUID(MEDIASUBTYPE_YVU9,0x39555659,0x0000,0x0010,0x80,0x00,0x00,0xaa,0x00,0x38,0x9b,0x71);
DEFINE_GUID(MEDIASUBTYPE_YVYU,0x55595659,0x0000,0x0010,0x80,0x00,0x00,0xaa,0x00,0x38,0x9b,0x71);
DEFINE_GUID(MEDIASUBTYPE_MJPG,0x47504A4D, 0x0000, 0x0010, 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71); // MGB
DEFINE_GUID(MEDIASUBTYPE_NV12,0x3231564e,0x0000,0x0010,0x80,0x00,0x00,0xaa,0x00,0x38,0x9b,0x71);
DEFINE_GUID(MEDIATYPE_Interleaved,0x73766169,0x0000,0x0010,0x80,0x00,0x00,0xaa,0x00,0x38,0x9b,0x71);
DEFINE_GUID(MEDIATYPE_Video,0x73646976,0x0000,0x0010,0x80,0x00,0x00,0xaa,0x00,0x38,0x9b,0x71);
DEFINE_GUID(PIN_CATEGORY_CAPTURE,0xfb6c4281,0x0353,0x11d1,0x90,0x5f,0x00,0x00,0xc0,0xcc,0x16,0xba);
@ -338,7 +339,7 @@ static void DebugPrintOut(const char *format, ...)
//videoInput defines
#define VI_VERSION 0.1995
#define VI_MAX_CAMERAS 20
#define VI_NUM_TYPES 22 //MGB
#define VI_NUM_TYPES 23 //MGB
#define VI_NUM_FORMATS 18 //DON'T TOUCH
//defines for setPhyCon - tuner is not as well supported as composite and s-video
@ -826,11 +827,14 @@ void videoDevice::setSize(int w, int h){
{
videoSize = w * h;
}
else if (pAmMediaType->subtype == MEDIASUBTYPE_Y16 ||
pAmMediaType->subtype == MEDIASUBTYPE_YUY2)
else if (pAmMediaType->subtype == MEDIASUBTYPE_Y16)
{
videoSize = w * h * 2;
}
else if (pAmMediaType->subtype == MEDIASUBTYPE_NV12)
{
videoSize = w * h * 3 / 2;
}
else
{
videoSize = w * h * 3;
@ -1109,6 +1113,7 @@ videoInput::videoInput(){
mediaSubtypes[19] = MEDIASUBTYPE_I420;
mediaSubtypes[20] = MEDIASUBTYPE_BY8;
mediaSubtypes[21] = MEDIASUBTYPE_Y16;
mediaSubtypes[22] = MEDIASUBTYPE_NV12;
//The video formats we support
formatTypes[VI_NTSC_M] = AnalogVideo_NTSC_M;
@ -1575,11 +1580,11 @@ bool videoInput::getPixels(int id, unsigned char * dstBuffer, bool flipRedAndBlu
processPixels(src, dst, width, height, flipRedAndBlue, flipImage, 2);
}
}
else if (VDList[id]->pAmMediaType->subtype == MEDIASUBTYPE_YUY2)
else if (VDList[id]->pAmMediaType->subtype == MEDIASUBTYPE_NV12)
{
cv::Mat srcMat(height, width, CV_8UC2, src);
cv::Mat srcMat(height * 3 / 2, width, CV_8UC1, src);
cv::Mat dstMat(height, width, CV_8UC3, dst);
cv::cvtColor(srcMat, dstMat, cv::COLOR_YUV2BGR_YUY2);
cv::cvtColor(srcMat, dstMat, cv::COLOR_YUV2BGR_NV12);
}
else
{
@ -2331,6 +2336,7 @@ void videoInput::getMediaSubtypeAsString(GUID type, char * typeAsString){
else if(type == MEDIASUBTYPE_I420) snprintf(tmpStr, sizeof(tmpStr), "I420");
else if (type == MEDIASUBTYPE_BY8) snprintf(tmpStr, sizeof(tmpStr), "BY8");
else if (type == MEDIASUBTYPE_Y16) snprintf(tmpStr, sizeof(tmpStr), "Y16");
else if (type == MEDIASUBTYPE_NV12) snprintf(tmpStr, sizeof(tmpStr), "NV12");
else snprintf(tmpStr, sizeof(tmpStr), "OTHER");
memcpy(typeAsString, tmpStr, sizeof(char)*8);
@ -2768,9 +2774,9 @@ int videoInput::start(int deviceID, videoDevice *VD){
if (strcmp("OBS Virtual Camera", VD->nDeviceName) == 0)
{
// OBS Virtual Camera always returns S_OK on SetFormat(), even if it doesn't support
// the actual format. So we have to choose a format that it supports manually, e.g. YUY2.
// the actual format. So we have to choose a format that it supports manually, e.g. NV12.
// https://github.com/opencv/opencv/issues/19746#issuecomment-1383056787
VD->tryVideoType = MEDIASUBTYPE_YUY2;
VD->tryVideoType = MEDIASUBTYPE_NV12;
}
char guidStr[8];
@ -2885,7 +2891,7 @@ int videoInput::start(int deviceID, videoDevice *VD){
// Disable format conversion if using 8/16-bit data (e-Con systems)
if (checkSingleByteFormat(VD->pAmMediaType->subtype) ||
(VD->pAmMediaType->subtype == MEDIASUBTYPE_Y16 || VD->pAmMediaType->subtype == MEDIASUBTYPE_YUY2))
(VD->pAmMediaType->subtype == MEDIASUBTYPE_Y16 || VD->pAmMediaType->subtype == MEDIASUBTYPE_NV12))
{
DebugPrintOut("SETUP: Not converting frames to RGB.\n");
mt.subtype = VD->pAmMediaType->subtype;