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Playlist_viewer.c clean-up and a bit of optimization

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Change-Id: I049020ab5da0b3b3c6495a4be1bc8f296d472e01
This commit is contained in:
William Wilgus 2024-07-12 00:15:19 -04:00
parent bdb5bf1511
commit a2747a1bd1
1 changed files with 77 additions and 62 deletions
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139
apps/playlist_viewer.c
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@ -118,9 +118,15 @@ struct playlist_viewer {
or -1 if nothing is currently being moved */
int moving_playlist_index; /* Playlist-relative index (as opposed to
viewer-relative index) of moving track */
bool (*track_metadata)(struct mp3entry* id3,
int fd,
const char* trackname,
int flags); /* Title display metadata lookup fn */
struct playlist_buffer buffer;
};
static struct playlist_viewer viewer;
/* Used when viewing playlists on disk */
@ -199,7 +205,7 @@ static void playlist_buffer_load_entries(struct playlist_buffer *pb, int index,
/* playlist_buffer_load_entries_screen()
* This function is called when the currently selected item gets too close
* to the start or the end of the loaded part of the playlis, or when
* to the start or the end of the loaded part of the playlist, or when
* the list callback requests a playlist item that has not been loaded yet
*
* reference_track is either the currently selected track, or the track that
@ -209,41 +215,40 @@ static void playlist_buffer_load_entries_screen(struct playlist_buffer * pb,
enum direction direction,
int reference_track)
{
int start;
if (direction == FORWARD)
{
int min_start = reference_track-2*screens[0].getnblines();
while (min_start < 0)
min_start += viewer.num_tracks;
min_start %= viewer.num_tracks;
playlist_buffer_load_entries(pb, min_start, FORWARD);
start = min_start % viewer.num_tracks;
}
else
{
int max_start = reference_track+2*screens[0].getnblines();
max_start %= viewer.num_tracks;
playlist_buffer_load_entries(pb, max_start, BACKWARD);
}
start = max_start % viewer.num_tracks;
}
playlist_buffer_load_entries(pb, start, direction);
}
static bool retrieve_track_metadata(struct mp3entry *id3, const char *filename, int flags)
{
bool success = true;
#if defined(HAVE_TC_RAMCACHE) && defined(HAVE_DIRCACHE)
/* try to get the id3 data from the database */
/* the database, doesn't store frequency, file size or codec (g4470) ChrisS*/
if (!(flags & METADATA_EXCLUDE_ID3_PATH) || !tagcache_fill_tags(id3, filename))
#endif
/* fall back to reading the file from disk */
static bool try_track_ram_metadata(struct mp3entry* id3, int fd, const char* trackname, int flags)
{
success = get_metadata_ex(id3, -1, filename, flags);
}
return success;
/* used for title display mode */
/* try to get the id3 data from the database */
if (tagcache_fill_tags(id3, trackname))
return true;
/* fall back to reading the file from disk */
return get_metadata_ex(id3, fd, trackname, flags);
}
#endif
static int load_track_title(char* buffer, size_t bufsz, char *filename)
{
size_t len = 0;
struct mp3entry id3;
if (retrieve_track_metadata(&id3, filename, METADATA_EXCLUDE_ID3_PATH)
if (viewer.track_metadata(&id3, -1, filename, METADATA_EXCLUDE_ID3_PATH)
&& id3.title && id3.title[0] != '\0')
{
const char *artist = id3.artist;
@ -252,11 +257,9 @@ static int load_track_title(char* buffer, size_t bufsz, char *filename)
if(!artist)
artist = str(LANG_TAGNAVI_UNTAGGED);
size_t len = snprintf(buffer, bufsz, "%s - %s", artist, id3.title) + 1;
if (len < bufsz)
return len;
len = snprintf(buffer, bufsz, "%s - %s", artist, id3.title) + 1;
}
return 0; /*Failure*/
return len;
}
static int playlist_entry_load(struct playlist_entry *entry, int index,
@ -288,6 +291,8 @@ static int playlist_entry_load(struct playlist_entry *entry, int index,
name_buffer += len;
remaining_size -= len;
int tlen = load_track_title(name_buffer, remaining_size, info.filename);
if (tlen > remaining_size)
return -1; /*Failure */
if (tlen > 0)
{
entry->title = name_buffer;
@ -439,6 +444,17 @@ static bool playlist_viewer_init(struct playlist_viewer * viewer,
file = filename+1;
}
viewer->title = file;
#if defined(HAVE_TC_RAMCACHE) && defined(HAVE_DIRCACHE)
if (global_settings.tagcache_ram == TAGCACHE_RAM_ON &&
tagcache_is_usable() && tagcache_is_in_ram())
{
viewer->track_metadata = try_track_ram_metadata;
}
else
#endif
{
viewer->track_metadata = get_metadata_ex;
}
if (is_playing)
{
@ -533,8 +549,8 @@ static bool update_playlist(bool force)
else
viewer.current_playing_track = -1;
int nb_tracks = playlist_amount_ex(viewer.playlist);
force = force || nb_tracks != viewer.num_tracks;
if (force)
if (force || nb_tracks != viewer.num_tracks)
{
/* Reload tracks */
viewer.num_tracks = nb_tracks;
@ -572,7 +588,8 @@ static enum pv_onplay_result show_track_info(const struct playlist_entry *curren
}
else
{
id3_retrieval_successful = retrieve_track_metadata(&id3, current_track->name, 0);
/* Read from disk, the database, doesn't store frequency, file size or codec (g4470) ChrisS*/
id3_retrieval_successful = get_metadata(&id3, -1, current_track->name);
}
return id3_retrieval_successful &&
@ -580,16 +597,18 @@ static enum pv_onplay_result show_track_info(const struct playlist_entry *curren
viewer.num_tracks, NULL, 1) ? PV_ONPLAY_USB : PV_ONPLAY_UNCHANGED;
}
#ifdef HAVE_HOTKEY
static enum pv_onplay_result open_with(const struct playlist_entry *current_track)
#if defined(HAVE_HOTKEY) || defined(HAVE_TAGCACHE)
static enum pv_onplay_result
open_with_plugin(const struct playlist_entry *current_track,
const char* plugin_name,
int (*loadplugin)(const char* plugin, const char* file))
{
char selected_track[MAX_PATH];
close_playlist_viewer(); /* don't pop activity yet – relevant for plugin_load */
strmemccpy(selected_track, current_track->name, sizeof(selected_track));
int plugin_return = filetype_list_viewers(selected_track);
int plugin_return = loadplugin(plugin_name, selected_track);
pop_current_activity_without_refresh();
switch (plugin_return)
@ -602,29 +621,27 @@ static enum pv_onplay_result open_with(const struct playlist_entry *current_trac
return PV_ONPLAY_CLOSED;
}
}
#ifdef HAVE_HOTKEY
static int list_viewers(const char* plugin, const char* file)
{
/* dummy function to match prototype with filetype_load_plugin */
(void)plugin;
return filetype_list_viewers(file);
}
static enum pv_onplay_result open_with(const struct playlist_entry *current_track)
{
return open_with_plugin(current_track, "", &list_viewers);
}
#endif /* HAVE_HOTKEY */
#ifdef HAVE_TAGCACHE
static enum pv_onplay_result open_pictureflow(const struct playlist_entry *current_track)
{
char selected_track[MAX_PATH];
close_playlist_viewer(); /* don't pop activity yet – relevant for plugin_load */
strmemccpy(selected_track, current_track->name, sizeof(selected_track));
int plugin_return = filetype_load_plugin((void *)"pictureflow", selected_track);
pop_current_activity_without_refresh();
switch (plugin_return)
{
case PLUGIN_USB_CONNECTED:
return PV_ONPLAY_USB_CLOSED;
case PLUGIN_GOTO_WPS:
return PV_ONPLAY_WPS_CLOSED;
default:
return PV_ONPLAY_CLOSED;
}
return open_with_plugin(current_track, "pictureflow", &filetype_load_plugin);
}
#endif
#endif /*defined(HAVE_HOTKEY) || defined(HAVE_TAGCACHE)*/
static enum pv_onplay_result delete_track(int current_track_index,
int index, bool current_was_playing)
@ -774,16 +791,18 @@ static int get_track_num(struct playlist_viewer *local_viewer,
return selected_item;
}
static struct playlist_entry* pv_get_track(struct playlist_viewer *local_viewer, int selected_item)
{
int track_num = get_track_num(local_viewer, selected_item);
return playlist_buffer_get_track(&(local_viewer->buffer), track_num);
}
static const char* playlist_callback_name(int selected_item,
void *data,
char *buffer,
size_t buffer_len)
{
struct playlist_viewer *local_viewer = (struct playlist_viewer *)data;
int track_num = get_track_num(local_viewer, selected_item);
struct playlist_entry *track =
playlist_buffer_get_track(&(local_viewer->buffer), track_num);
struct playlist_entry *track = pv_get_track(data, selected_item);
format_line(track, buffer, buffer_len);
@ -795,10 +814,7 @@ static enum themable_icons playlist_callback_icons(int selected_item,
void *data)
{
struct playlist_viewer *local_viewer = (struct playlist_viewer *)data;
int track_num = get_track_num(local_viewer, selected_item);
struct playlist_entry *track =
playlist_buffer_get_track(&(local_viewer->buffer), track_num);
struct playlist_entry *track = pv_get_track(local_viewer, selected_item);
if (track->index == local_viewer->current_playing_track)
{
@ -822,10 +838,8 @@ static enum themable_icons playlist_callback_icons(int selected_item,
static int playlist_callback_voice(int selected_item, void *data)
{
struct playlist_viewer *local_viewer = (struct playlist_viewer *)data;
struct playlist_entry *track=
playlist_buffer_get_track(&(local_viewer->buffer),
selected_item);
(void)selected_item;
struct playlist_entry *track = pv_get_track(local_viewer, selected_item);
if(global_settings.playlist_viewer_icons) {
if (track->index == local_viewer->current_playing_track)
talk_id(LANG_NOW_PLAYING, true);
@ -1024,16 +1038,17 @@ enum playlist_viewer_result playlist_viewer_ex(const char* filename,
viewer.moving_track = -1;
viewer.moving_playlist_index = -1;
}
else if (global_settings.party_mode)
{
/* Nothing to do */
}
else if (!viewer.playlist)
{
/* play new track */
if (!global_settings.party_mode)
{
playlist_start(current_track->index, 0, 0);
update_playlist(false);
}
}
else if (!global_settings.party_mode)
else
{
int start_index = current_track->index;
if (!warn_on_pl_erase())