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Remove ImageCache instance from ServerSettings

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badaix 2024-07-01 23:29:26 +02:00
parent 2530a347c2
commit 78cbd3cf5b
6 changed files with 20 additions and 12 deletions
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18
server/image_cache.hpp
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@ -30,12 +30,19 @@
#include <string>
/// Image cache, used to store current album art per stream
class ImageCache
{
public:
ImageCache() = default;
virtual ~ImageCache() = default;
/// @return singleton to the image cache
static ImageCache& instance()
{
static ImageCache instance_;
return instance_;
}
/// Store the base64 encoded @p image for @p key (the session that stores the image) in the cache
/// @return url of the cached image (md5 of key + image data) appended with @p extension
std::string setImage(const std::string& key, std::string image, const std::string& extension)
{
if (image.empty())
@ -51,7 +58,7 @@ public:
hash.process_bytes(image.data(), image.size());
hash.get_digest(digest);
std::string filename;
const auto intDigest = reinterpret_cast<const int*>(&digest);
const auto* intDigest = reinterpret_cast<const int*>(&digest);
boost::algorithm::hex_lower(intDigest, intDigest + (sizeof(md5::digest_type) / sizeof(int)), std::back_inserter(filename));
auto ext = extension;
if (ext.find('.') == 0)
@ -63,6 +70,7 @@ public:
return filename;
};
/// Clear image for @p key (the stream session's name)
void clear(const std::string& key)
{
std::lock_guard<std::mutex> lock(mutex_);
@ -77,6 +85,7 @@ public:
}
}
/// @return base64 encoded image for url (the one returned by "setImage")
std::optional<std::string> getImage(const std::string& url)
{
std::lock_guard<std::mutex> lock(mutex_);
@ -88,6 +97,9 @@ public:
}
private:
ImageCache() = default;
~ImageCache() = default;
std::map<std::string, std::string> key_to_url_;
std::map<std::string, std::string> url_to_data_;
std::mutex mutex_;