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Brightness (Linux): try detect monitor name

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This commit is contained in:
李通洲
2023-08-10 10:39:48 +08:00
parent b4ad245212
commit e0c59b9395
1 changed files with 25 additions and 51 deletions
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src/detection/brightness/brightness_linux.c
+25 -51
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@@ -1,5 +1,6 @@
#include "brightness.h"
#include "common/io/io.h"
#include "util/edidHelper.h"
#include "util/stringUtils.h"
#include <dirent.h>
@@ -45,9 +46,29 @@ static const char* detectWithBacklight(FFlist* result)
if(realpath(backlightDir.chars, brightness->name.chars))
{
ffStrbufRecalculateLength(&brightness->name);
ffStrbufSubstrAfterLastC(&brightness->name, '/');
if(ffStrbufStartsWithS(&brightness->name, "card") && isdigit(brightness->name.chars[4]))
ffStrbufSubstrAfterFirstC(&brightness->name, '-');
// if we managed to get edid, use it
ffStrbufAppendS(&brightness->name, "/edid");
uint8_t edidData[128];
if(ffReadFileData(brightness->name.chars, sizeof(edidData), edidData) == sizeof(edidData))
{
ffStrbufClear(&brightness->name);
ffEdidGetName(edidData, &brightness->name);
}
else
{
ffStrbufSubstrBeforeLastC(&brightness->name, '/'); // remove "/edid"
ffStrbufSubstrAfterLastC(&brightness->name, '/'); // try getting DRM connector name
if(ffStrbufStartsWithS(&brightness->name, "0000:"))
{
// PCI address, give up
ffStrbufSetS(&brightness->name, entry->d_name);
}
else
{
if(ffStrbufStartsWithS(&brightness->name, "card") && isdigit(brightness->name.chars[4]))
ffStrbufSubstrAfterFirstC(&brightness->name, '-');
}
}
}
else
ffStrbufInitS(&brightness->name, entry->d_name);
@@ -70,44 +91,6 @@ static const char* detectWithBacklight(FFlist* result)
#include <ddcutil_c_api.h>
static bool findDrmByEdid(const uint8_t srcEdidData[128], FFstrbuf* result)
{
const char* drmDirPath = "/sys/class/drm/";
DIR* dirp = opendir(drmDirPath);
if(dirp == NULL)
return false;
FF_STRBUF_AUTO_DESTROY drmDir = ffStrbufCreateA(64);
ffStrbufAppendS(&drmDir, drmDirPath);
uint32_t drmDirLength = drmDir.length;
struct dirent* entry;
while((entry = readdir(dirp)) != NULL)
{
if(ffStrEquals(entry->d_name, ".") || ffStrEquals(entry->d_name, ".."))
continue;
ffStrbufAppendS(&drmDir, entry->d_name);
ffStrbufAppendS(&drmDir, "/edid");
uint8_t edidData[128];
if(ffReadFileData(drmDir.chars, sizeof(edidData), edidData) != sizeof(edidData))
{
ffStrbufSubstrBefore(&drmDir, drmDirLength);
continue;
}
if (memcmp(srcEdidData, edidData, sizeof(edidData)) == 0)
{
ffStrbufAppendS(result, entry->d_name);
closedir(dirp);
return true;
}
}
return false;
}
static const char* detectWithDdcci(FFlist* result)
{
FF_LIBRARY_LOAD(libddcutil, &instance.config.libDdcutil, "dlopen ddcutil failed", "libddcutil" FF_LIBRARY_EXTENSION, 4);
@@ -141,16 +124,7 @@ static const char* detectWithDdcci(FFlist* result)
FFBrightnessResult* brightness = (FFBrightnessResult*) ffListAdd(result);
brightness->value = (float) current * 100.f / (float) max;
ffStrbufInit(&brightness->name);
if (findDrmByEdid(display->edid_bytes, &brightness->name))
{
if (ffStrbufStartsWithS(&brightness->name, "card"))
ffStrbufSubstrAfterFirstC(&brightness->name, '-');
}
else
{
ffStrbufAppendS(&brightness->name, display->model_name);
}
ffStrbufInitS(&brightness->name, display->model_name);
}
ffddca_close_display(handle);
}