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Anemone3DS/source/loading.c
LiquidFenrir f65b32c90c Other scrolling method - fix hack (#122) 
* other method: leave scrolling to icon updating function
downside: scroll can lag behind the selected entry if going too fast

* bring back looping so scrolling doesnt lag behind as much when going out of bounds
only about a second lag, then a second again for icons to load

* this method doesnt need to know the ids

* fix memory leak

* optimize for invisibility

* fix lockup when install checking threads are finished

* less magic, again
make icon loading functions/numbers more general

* increase wait time for fastcroll to give people more time to react, and to prevent some lag for the loading function
2017-12-30 23:01:31 -05:00

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/*
* This file is part of Anemone3DS
* Copyright (C) 2016-2017 Alex Taber ("astronautlevel"), Dawid Eckert ("daedreth")
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Additional Terms 7.b and 7.c of GPLv3 apply to this file:
* * Requiring preservation of specified reasonable legal notices or
* author attributions in that material or in the Appropriate Legal
* Notices displayed by works containing it.
* * Prohibiting misrepresentation of the origin of that material,
* or requiring that modified versions of such material be marked in
* reasonable ways as different from the original version.
*/
#include "loading.h"
#include "pp2d/pp2d/pp2d.h"
#include "fs.h"
#include "unicode.h"
#include "draw.h"
void delete_entry(Entry_s entry)
{
if(entry.is_zip)
FSUSER_DeleteFile(ArchiveSD, fsMakePath(PATH_UTF16, entry.path));
else
FSUSER_DeleteDirectoryRecursively(ArchiveSD, fsMakePath(PATH_UTF16, entry.path));
}
u32 load_data(char * filename, Entry_s entry, char ** buf)
{
if(entry.is_zip)
{
return zip_file_to_buf(filename+1, entry.path, buf); //the first character will always be '/' because of the other case
}
else
{
u16 path[0x106] = {0};
strucat(path, entry.path);
struacat(path, filename);
return file_to_buf(fsMakePath(PATH_UTF16, path), ArchiveSD, buf);
}
}
static void parse_smdh(Entry_s * entry, const u16 * fallback_name)
{
char *info_buffer = NULL;
u64 size = load_data("/info.smdh", *entry, &info_buffer);
Icon_s * smdh = (Icon_s *)info_buffer;
if(!size)
{
free(info_buffer);
memcpy(entry->name, fallback_name, 0x80);
utf8_to_utf16(entry->desc, (u8*)"No description", 0x100);
utf8_to_utf16(entry->author, (u8*)"Unknown author", 0x80);
entry->placeholder_color = RGBA8(rand() % 255, rand() % 255, rand() % 255, 255);
return;
}
memcpy(entry->name, smdh->name, 0x40*sizeof(u16));
memcpy(entry->desc, smdh->desc, 0x80*sizeof(u16));
memcpy(entry->author, smdh->author, 0x40*sizeof(u16));
}
static void load_smdh_icon(Entry_s entry, const ssize_t textureID)
{
pp2d_free_texture(textureID);
char *info_buffer = NULL;
u64 size = load_data("/info.smdh", entry, &info_buffer);
if(!size) return;
Icon_s * smdh = (Icon_s *)info_buffer;
const u32 width = 48, height = 48;
u32 *image = malloc(width*height*sizeof(u32));
for(u32 x = 0; x < width; x++)
{
for(u32 y = 0; y < height; y++)
{
unsigned int dest_pixel = (x + y*width);
unsigned int source_pixel = (((y >> 3) * (width >> 3) + (x >> 3)) << 6) + ((x & 1) | ((y & 1) << 1) | ((x & 2) << 1) | ((y & 2) << 2) | ((x & 4) << 2) | ((y & 4) << 3));
image[dest_pixel] = RGB565_TO_ABGR8(smdh->big_icon[source_pixel]);
}
}
free(info_buffer);
pp2d_load_texture_memory(textureID, (u8*)image, (u32)width, (u32)height);
free(image);
}
static int compare_entries(const void * a, const void * b)
{
Entry_s *entry_a = (Entry_s *)a;
Entry_s *entry_b = (Entry_s *)b;
return memcmp(entry_a->name, entry_b->name, 0x40*sizeof(u16));
}
static void sort_list(Entry_List_s * list)
{
qsort(list->entries, list->entries_count, sizeof(Entry_s), compare_entries); //alphabet sort
}
Result load_entries(const char * loading_path, Entry_List_s * list, EntryMode mode)
{
Handle dir_handle;
Result res = FSUSER_OpenDirectory(&dir_handle, ArchiveSD, fsMakePath(PATH_ASCII, loading_path));
if(R_FAILED(res))
return res;
u32 entries_read = 1;
while(entries_read)
{
FS_DirectoryEntry dir_entry = {0};
res = FSDIR_Read(dir_handle, &entries_read, 1, &dir_entry);
if(R_FAILED(res) || entries_read == 0)
break;
if(!(dir_entry.attributes & FS_ATTRIBUTE_DIRECTORY) && strcmp(dir_entry.shortExt, "ZIP"))
continue;
list->entries_count++;
Entry_s * new_list = realloc(list->entries, list->entries_count * sizeof(Entry_s));
if(new_list == NULL)
{
free(list->entries);
list->entries = NULL;
res = -1;
break;
}
else
list->entries = new_list;
Entry_s * current_entry = &(list->entries[list->entries_count-1]);
memset(current_entry, 0, sizeof(Entry_s));
struacat(current_entry->path, loading_path);
strucat(current_entry->path, dir_entry.name);
current_entry->is_zip = !strcmp(dir_entry.shortExt, "ZIP");
parse_smdh(current_entry, dir_entry.name);
}
FSDIR_Close(dir_handle);
sort_list(list);
list->mode = mode;
return res;
}
void load_icons_first(Entry_List_s * list, bool silent)
{
if(list == NULL || list->entries == NULL) return;
if(!silent)
draw_install(INSTALL_LOADING_ICONS);
int starti = 0, endi = 0;
if(list->entries_count <= ENTRIES_PER_SCREEN*ICONS_OFFSET_AMOUNT)
{
DEBUG("small load\n");
// if the list is one that doesnt need swapping, load everything at once
endi = list->entries_count;
}
else
{
DEBUG("extended load\n");
// otherwise, load around to prepare for swapping
starti = list->scroll - ENTRIES_PER_SCREEN*ICONS_VISIBLE;
endi = starti + ENTRIES_PER_SCREEN*ICONS_OFFSET_AMOUNT;
}
ssize_t * icon_ids = (ssize_t *)list->icons_ids;
ssize_t id = list->texture_id_offset;
memset(icon_ids, 0, ENTRIES_PER_SCREEN*ICONS_OFFSET_AMOUNT*sizeof(ssize_t));
for(int i = starti; i < endi; i++, id++)
{
int offset = i;
if(offset < 0)
offset += list->entries_count;
if(offset >= list->entries_count)
offset -= list->entries_count;
Entry_s current_entry = list->entries[offset];
load_smdh_icon(current_entry, id);
icon_ids[i-starti] = id;
}
}
static void reverse(ssize_t a[], int sz) {
int i, j;
for (i = 0, j = sz; i < j; i++, j--) {
ssize_t tmp = a[i];
a[i] = a[j];
a[j] = tmp;
}
}
static void rotate(ssize_t array[], int size, int amt) {
if (amt < 0)
amt = size + amt;
reverse(array, size-amt-1);
reverse(array+size-amt, amt-1);
reverse(array, size-1);
}
void handle_scrolling(Entry_List_s * list)
{
// Scroll the menu up or down if the selected theme is out of its bounds
//----------------------------------------------------------------
if(list->entries_count > ENTRIES_PER_SCREEN)
{
for(int i = 0; i < list->entries_count; i++)
{
int change = 0;
if(list->entries_count > ENTRIES_PER_SCREEN*2 && list->previous_scroll < ENTRIES_PER_SCREEN && list->selected_entry >= list->entries_count - ENTRIES_PER_SCREEN)
{
list->scroll = list->entries_count - ENTRIES_PER_SCREEN;
}
else if(list->entries_count > ENTRIES_PER_SCREEN*2 && list->selected_entry < ENTRIES_PER_SCREEN && list->previous_selected >= list->entries_count - ENTRIES_PER_SCREEN)
{
list->scroll = 0;
}
else if(list->selected_entry == list->previous_selected+1 && list->selected_entry == list->scroll+ENTRIES_PER_SCREEN)
{
change = 1;
}
else if(list->selected_entry == list->previous_selected-1 && list->selected_entry == list->scroll-1)
{
change = -1;
}
else if(list->selected_entry == list->previous_selected+ENTRIES_PER_SCREEN || list->selected_entry >= list->scroll + ENTRIES_PER_SCREEN)
{
change = ENTRIES_PER_SCREEN;
}
else if(list->selected_entry == list->previous_selected-ENTRIES_PER_SCREEN || list->selected_entry < list->scroll)
{
change = -ENTRIES_PER_SCREEN;
}
list->scroll += change;
if(list->scroll < 0)
list->scroll = 0;
else if(list->scroll > list->entries_count - ENTRIES_PER_SCREEN)
list->scroll = list->entries_count - ENTRIES_PER_SCREEN;
if(!change)
list->previous_selected = list->selected_entry;
else
list->previous_selected += change;
}
}
//----------------------------------------------------------------
}
static void load_icons(Entry_List_s * current_list)
{
if(current_list == NULL || current_list->entries == NULL)
return;
handle_scrolling(current_list);
if(current_list->entries_count <= ENTRIES_PER_SCREEN*ICONS_OFFSET_AMOUNT || current_list->previous_scroll == current_list->scroll)
return; // return if the list is one that doesnt need swapping, or if nothing changed
#define SIGN(x) (x > 0 ? 1 : ((x < 0) ? -1 : 0))
int delta = current_list->scroll - current_list->previous_scroll;
if(abs(delta) >= current_list->entries_count - ENTRIES_PER_SCREEN*(ICONS_OFFSET_AMOUNT-1))
delta = -SIGN(delta) * (current_list->entries_count - abs(delta));
int starti = current_list->scroll;
int endi = starti + abs(delta);
if(delta < 0)
{
endi -= abs(delta) + 1;
starti += abs(delta) - 1;
}
int ctr = 0;
Entry_s ** entries = calloc(abs(delta), sizeof(Entry_s *));
ssize_t * ids = calloc(abs(delta), sizeof(ssize_t));
#define FIRST(arr) arr[0]
#define LAST(arr) arr[ENTRIES_PER_SCREEN*ICONS_OFFSET_AMOUNT - 1]
ssize_t * icons_ids = (ssize_t *)current_list->icons_ids;
for(int i = starti; i != endi; i++, ctr++)
{
ssize_t id = 0;
int offset = i;
rotate(icons_ids, ICONS_OFFSET_AMOUNT*ENTRIES_PER_SCREEN, -1*SIGN(delta));
if(delta > 0)
{
id = LAST(icons_ids);
offset += ENTRIES_PER_SCREEN*ICONS_UNDER - delta;
}
else
{
id = FIRST(icons_ids);
offset -= ENTRIES_PER_SCREEN*ICONS_VISIBLE;
i -= 2; //i-- twice to counter the i++, needed only for this case
}
if(offset < 0)
offset += current_list->entries_count;
if(offset >= current_list->entries_count)
offset -= current_list->entries_count;
entries[ctr] = &current_list->entries[offset];
ids[ctr] = id;
}
#undef FIRST
#undef LAST
#undef SIGN
svcSleepThread(1e6);
for(int i = 0; i < abs(delta); i++)
load_smdh_icon(*entries[i], ids[i]);
free(entries);
free(ids);
current_list->previous_scroll = current_list->scroll;
}
void load_icons_thread(void * void_arg)
{
Thread_Arg_s * arg = (Thread_Arg_s *)void_arg;
Handle update_request = *(Handle *)arg->thread_arg[1];
do
{
svcWaitSynchronization(update_request, U64_MAX);
svcClearEvent(update_request);
volatile Entry_List_s * current_list = *(volatile Entry_List_s **)arg->thread_arg[0];
load_icons((Entry_List_s *)current_list);
}
while(arg->run_thread);
}
static u16 previous_path_preview[0x106] = {0};
bool load_preview(Entry_List_s list, int * preview_offset)
{
if(list.entries == NULL) return false;
Entry_s entry = list.entries[list.selected_entry];
if(!memcmp(&previous_path_preview, &entry.path, 0x106*sizeof(u16))) return true;
char *preview_buffer = NULL;
u64 size = load_data("/preview.png", entry, &preview_buffer);
if(!size)
{
free(preview_buffer);
throw_error("No preview found.", ERROR_LEVEL_WARNING);
return false;
}
bool ret = false;
u8 * image = NULL;
unsigned int width = 0, height = 0;
if((lodepng_decode32(&image, &width, &height, (u8*)preview_buffer, size)) == 0) // no error
{
for(u32 i = 0; i < width; i++)
{
for(u32 j = 0; j < height; j++)
{
u32* pixel = (u32*)(image + (i + j*width) * 4);
*pixel = __builtin_bswap32(*pixel); //swap from RGBA to ABGR, needed for pp2d
}
}
// mark the new preview as loaded for optimisation
memcpy(&previous_path_preview, &entry.path, 0x106*sizeof(u16));
// free the previously loaded preview. wont do anything if there wasnt one
pp2d_free_texture(TEXTURE_PREVIEW);
pp2d_load_texture_memory(TEXTURE_PREVIEW, image, (u32)width, (u32)height);
*preview_offset = (width-400)/2;
ret = true;
}
else
{
throw_error("Corrupted/invalid preview.png", ERROR_LEVEL_WARNING);
}
free(image);
free(preview_buffer);
return ret;
}
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