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db/Stats: use std::chrono::duration for the total duration 

Use milliseconds precision to reduce rounding errors.
This commit is contained in:
Max Kellermann 2014-08-29 23:22:46 +02:00
parent de64b35359
commit 58352ea69d
4 changed files with 11 additions and 6 deletions
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7
src/Stats.cxx
View File

@ -99,15 +99,18 @@ db_stats_print(Client &client, const Database &db)
if (!stats_update(db))
return;
unsigned total_duration_s =
std::chrono::duration_cast<std::chrono::seconds>(stats.total_duration).count();
client_printf(client,
"artists: %u\n"
"albums: %u\n"
"songs: %u\n"
"db_playtime: %lu\n",
"db_playtime: %u\n",
stats.artist_count,
stats.album_count,
stats.song_count,
stats.total_duration);
total_duration_s);
const time_t update_stamp = db.GetUpdateStamp();
if (update_stamp > 0)

2
src/db/Helpers.cxx
View File

@ -41,7 +41,7 @@ StatsVisitTag(DatabaseStats &stats, StringSet &artists, StringSet &albums,
const Tag &tag)
{
if (!tag.duration.IsNegative())
stats.total_duration += tag.duration.ToS();
stats.total_duration += tag.duration;
for (const auto &item : tag) {
switch (item.type) {

6
src/db/Stats.hxx
View File

@ -20,6 +20,8 @@
#ifndef MPD_DATABASE_STATS_HXX
#define MPD_DATABASE_STATS_HXX
#include "Chrono.hxx"
struct DatabaseStats {
/**
* Number of songs.
@ -29,7 +31,7 @@ struct DatabaseStats {
/**
* Total duration of all songs (in seconds).
*/
unsigned long total_duration;
std::chrono::duration<std::uint64_t, SongTime::period> total_duration;
/**
* Number of distinct artist names.
@ -43,7 +45,7 @@ struct DatabaseStats {
void Clear() {
song_count = 0;
total_duration = 0;
total_duration = total_duration.zero();
artist_count = album_count = 0;
}
};

2
src/db/plugins/ProxyDatabasePlugin.cxx
View File

@ -807,7 +807,7 @@ ProxyDatabase::GetStats(const DatabaseSelection &selection,
update_stamp = (time_t)mpd_stats_get_db_update_time(stats2);
stats.song_count = mpd_stats_get_number_of_songs(stats2);
stats.total_duration = mpd_stats_get_db_play_time(stats2);
stats.total_duration = std::chrono::seconds(mpd_stats_get_db_play_time(stats2));
stats.artist_count = mpd_stats_get_number_of_artists(stats2);
stats.album_count = mpd_stats_get_number_of_albums(stats2);
mpd_stats_free(stats2);