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Try to reduce memory usage by reusing avatar pixmaps

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This commit is contained in:
Nicolas Werner 2019-08-26 01:24:56 +02:00
parent 89015b9f18
commit 52056a79fa
27 changed files with 149 additions and 208 deletions
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55
src/AvatarProvider.cpp
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@ -16,30 +16,44 @@
*/
#include <QBuffer>
#include <QPixmapCache>
#include <memory>
#include <unordered_map>
#include "AvatarProvider.h"
#include "Cache.h"
#include "Logging.h"
#include "MatrixClient.h"
static QPixmapCache avatar_cache;
namespace AvatarProvider {
void
resolve(const QString &room_id, const QString &user_id, QObject *receiver, AvatarCallback callback)
resolve(const QString &avatarUrl, int size, QObject *receiver, AvatarCallback callback)
{
const auto key = QString("%1 %2").arg(room_id).arg(user_id);
const auto avatarUrl = Cache::avatarUrl(room_id, user_id);
avatar_cache.setCacheLimit(1024 * 1024);
if (!Cache::AvatarUrls.contains(key) || !cache::client())
const auto cacheKey = avatarUrl + "_size_" + size;
if (!cache::client())
return;
if (avatarUrl.isEmpty())
return;
QPixmap pixmap;
if (avatar_cache.find(cacheKey, pixmap)) {
nhlog::net()->info("cached pixmap {}", avatarUrl.toStdString());
callback(pixmap);
return;
}
auto data = cache::client()->image(avatarUrl);
if (!data.isNull()) {
callback(QImage::fromData(data));
pixmap.loadFromData(data);
avatar_cache.insert(cacheKey, pixmap);
nhlog::net()->info("loaded pixmap from disk cache {}", avatarUrl.toStdString());
callback(pixmap);
return;
}
@ -47,7 +61,12 @@ resolve(const QString &room_id, const QString &user_id, QObject *receiver, Avata
QObject::connect(proxy.get(),
&AvatarProxy::avatarDownloaded,
receiver,
[callback](const QByteArray &data) { callback(QImage::fromData(data)); });
[callback, cacheKey](const QByteArray &data) {
QPixmap pm;
pm.loadFromData(data);
avatar_cache.insert(cacheKey, pm);
callback(pm);
});
mtx::http::ThumbOpts opts;
opts.width = 256;
@ -67,8 +86,26 @@ resolve(const QString &room_id, const QString &user_id, QObject *receiver, Avata
cache::client()->saveImage(opts.mxc_url, res);
auto data = QByteArray(res.data(), res.size());
emit proxy->avatarDownloaded(data);
nhlog::net()->info("downloaded pixmap {}", opts.mxc_url);
emit proxy->avatarDownloaded(QByteArray(res.data(), res.size()));
});
}
void
resolve(const QString &room_id,
const QString &user_id,
int size,
QObject *receiver,
AvatarCallback callback)
{
const auto key = QString("%1 %2").arg(room_id).arg(user_id);
const auto avatarUrl = Cache::avatarUrl(room_id, user_id);
const auto cacheKey = avatarUrl + "_size_" + size;
if (!Cache::AvatarUrls.contains(key) || !cache::client())
return;
resolve(avatarUrl, size, receiver, callback);
}
}