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Display (Linux): detect bit depth when libdrm is used

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Carter Li
2024-12-03 10:55:00 +08:00
parent ab200d7e4a
commit 6edf763f2b
1 changed files with 22 additions and 10 deletions
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src/detection/displayserver/linux/drm.c
+22 -10
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@@ -220,12 +220,14 @@ static const char* drmConnectLibdrm(FFDisplayServerResult* result)
FF_LIBRARY_LOAD_SYMBOL_MESSAGE(libdrm, drmModeGetConnectorCurrent)
FF_LIBRARY_LOAD_SYMBOL_MESSAGE(libdrm, drmModeGetCrtc)
FF_LIBRARY_LOAD_SYMBOL_MESSAGE(libdrm, drmModeGetEncoder)
FF_LIBRARY_LOAD_SYMBOL_MESSAGE(libdrm, drmModeGetFB)
FF_LIBRARY_LOAD_SYMBOL_MESSAGE(libdrm, drmModeGetProperty)
FF_LIBRARY_LOAD_SYMBOL_MESSAGE(libdrm, drmModeGetPropertyBlob)
FF_LIBRARY_LOAD_SYMBOL_MESSAGE(libdrm, drmModeFreeResources)
FF_LIBRARY_LOAD_SYMBOL_MESSAGE(libdrm, drmModeFreeCrtc)
FF_LIBRARY_LOAD_SYMBOL_MESSAGE(libdrm, drmModeFreeEncoder)
FF_LIBRARY_LOAD_SYMBOL_MESSAGE(libdrm, drmModeFreeConnector)
FF_LIBRARY_LOAD_SYMBOL_MESSAGE(libdrm, drmModeFreeEncoder)
FF_LIBRARY_LOAD_SYMBOL_MESSAGE(libdrm, drmModeFreeFB)
FF_LIBRARY_LOAD_SYMBOL_MESSAGE(libdrm, drmModeFreeProperty)
FF_LIBRARY_LOAD_SYMBOL_MESSAGE(libdrm, drmModeFreePropertyBlob)
FF_LIBRARY_LOAD_SYMBOL_MESSAGE(libdrm, drmFreeDevices)
@@ -254,28 +256,29 @@ static const char* drmConnectLibdrm(FFDisplayServerResult* result)
continue;
#endif
FF_AUTO_CLOSE_FD int fd = open(path, O_RDONLY | O_CLOEXEC);
if (fd < 0)
FF_AUTO_CLOSE_FD int primaryFd = open(path, O_RDWR | O_CLOEXEC);
if (primaryFd < 0)
continue;
drmModeRes* res = ffdrmModeGetResources(fd);
drmModeRes* res = ffdrmModeGetResources(primaryFd);
if (!res)
continue;
for (int iConn = 0; iConn < res->count_connectors; ++iConn)
{
drmModeConnector* conn = ffdrmModeGetConnectorCurrent(fd, res->connectors[iConn]);
drmModeConnector* conn = ffdrmModeGetConnectorCurrent(primaryFd, res->connectors[iConn]);
if (!conn)
continue;
if (conn->connection != DRM_MODE_DISCONNECTED)
{
drmModeEncoder* encoder = ffdrmModeGetEncoder(fd, conn->encoder_id);
drmModeEncoder* encoder = ffdrmModeGetEncoder(primaryFd, conn->encoder_id);
uint32_t width = 0, height = 0, refreshRate = 0;
uint8_t bitDepth = 0;
if (encoder)
{
drmModeCrtc* crtc = ffdrmModeGetCrtc(fd, encoder->crtc_id);
drmModeCrtc* crtc = ffdrmModeGetCrtc(primaryFd, encoder->crtc_id);
if (crtc)
{
width = crtc->mode.hdisplay;
@@ -294,6 +297,14 @@ static const char* drmConnectLibdrm(FFDisplayServerResult* result)
}
}
}
drmModeFBPtr fb = ffdrmModeGetFB(primaryFd, crtc->buffer_id);
if (fb)
{
bitDepth = (uint8_t) (fb->depth / 3);
ffdrmModeFreeFB(fb);
}
ffdrmModeFreeCrtc(crtc);
}
@@ -332,7 +343,7 @@ static const char* drmConnectLibdrm(FFDisplayServerResult* result)
for (int iProp = 0; iProp < conn->count_props; ++iProp)
{
drmModePropertyRes *prop = ffdrmModeGetProperty(fd, conn->props[iProp]);
drmModePropertyRes *prop = ffdrmModeGetProperty(primaryFd, conn->props[iProp]);
if (!prop)
continue;
@@ -342,9 +353,9 @@ static const char* drmConnectLibdrm(FFDisplayServerResult* result)
drmModePropertyBlobPtr blob = NULL;
if (prop->count_blobs > 0 && prop->blob_ids != NULL)
blob = ffdrmModeGetPropertyBlob(fd, prop->blob_ids[0]);
blob = ffdrmModeGetPropertyBlob(primaryFd, prop->blob_ids[0]);
else
blob = ffdrmModeGetPropertyBlob(fd, (uint32_t) conn->prop_values[iProp]);
blob = ffdrmModeGetPropertyBlob(primaryFd, (uint32_t) conn->prop_values[iProp]);
if (blob)
{
@@ -412,6 +423,7 @@ static const char* drmConnectLibdrm(FFDisplayServerResult* result)
item->serial = serial;
item->manufactureYear = myear;
item->manufactureWeek = mweak;
item->bitDepth = bitDepth;
}
}