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Logo (Image): improve performance when image is cached

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This commit is contained in:
Carter Li
2024-06-28 10:23:38 +08:00
parent 3d7d02b5c5
commit debcc3ca7f
1 changed files with 28 additions and 4 deletions
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src/logo/image/image.c
+28 -4
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@@ -10,6 +10,8 @@
#include <sys/syslimits.h>
#elif _WIN32
#include <windows.h>
#elif __linux__
#include <sys/sendfile.h>
#endif
// https://github.com/kostya/benchmarks/blob/master/base64/test-nolib.c#L145
@@ -758,10 +760,32 @@ static bool printCachedPixel(FFLogoRequestData* requestData)
printf("\e[%uC", (unsigned) options->paddingLeft);
fflush(stdout);
char buffer[32768];
ssize_t readBytes;
while((readBytes = ffReadFDData(FFUnixFD2NativeFD(fd), sizeof(buffer), buffer)) > 0)
ffWriteFDData(FFUnixFD2NativeFD(STDOUT_FILENO), (size_t) readBytes, buffer);
bool sent = false;
#ifdef __linux__
struct stat st;
if (fstat(fd, &st) >= 0)
{
while (st.st_size > 0)
{
ssize_t bytes = sendfile(STDOUT_FILENO, fd, NULL, (size_t) st.st_size);
if (bytes > 0)
{
sent = true;
st.st_size -= bytes;
}
else
break;
}
}
#endif
if (!sent)
{
char buffer[32768];
ssize_t readBytes;
while((readBytes = ffReadFDData(FFUnixFD2NativeFD(fd), sizeof(buffer), buffer)) > 0)
ffWriteFDData(FFUnixFD2NativeFD(STDOUT_FILENO), (size_t) readBytes, buffer);
}
instance.state.logoWidth = requestData->logoCharacterWidth + options->paddingLeft + options->paddingRight;
instance.state.logoHeight = requestData->logoCharacterHeight + options->paddingTop;