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rockbox/apps/plugins/pictureflow.c
Daniel Stenberg 2acc0ac542 Updated our source code header to explicitly mention that we are GPL v2 or 
later. We still need to hunt down snippets used that are not. 1324 modified
files...
http://www.rockbox.org/mail/archive/rockbox-dev-archive-2008-06/0060.shtml


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17847 a1c6a512-1295-4272-9138-f99709370657
2008-06-28 18:10:04 +00:00

2145 lines
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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2007 Jonas Hurrelmann (j@outpo.st)
* Copyright (C) 2007 Nicolas Pennequin
* Copyright (C) 2007 Ariya Hidayat (ariya@kde.org) (original Qt Version)
*
* Original code: http://code.google.com/p/pictureflow/
*
* 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 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "plugin.h"
#include "pluginlib_actions.h"
#include "helper.h"
#include "bmp.h"
#include "picture.h"
#include "pictureflow_logo.h"
#include "pictureflow_emptyslide.h"
PLUGIN_HEADER
/******************************* Globals ***********************************/
static const struct plugin_api *rb; /* global api struct pointer */
const struct button_mapping *plugin_contexts[]
= {generic_actions, generic_directions};
#define NB_ACTION_CONTEXTS sizeof(plugin_contexts)/sizeof(plugin_contexts[0])
/* Key assignement */
#if (CONFIG_KEYPAD == IPOD_1G2G_PAD) \
|| (CONFIG_KEYPAD == IPOD_3G_PAD) \
|| (CONFIG_KEYPAD == IPOD_4G_PAD) \
|| (CONFIG_KEYPAD == SANSA_E200_PAD)
#define SCROLLWHEEL
#endif
#ifdef SCROLLWHEEL
#define PICTUREFLOW_NEXT_ALBUM PLA_DOWN
#define PICTUREFLOW_NEXT_ALBUM_REPEAT PLA_DOWN_REPEAT
#define PICTUREFLOW_PREV_ALBUM PLA_UP
#define PICTUREFLOW_PREV_ALBUM_REPEAT PLA_UP_REPEAT
#else
#define PICTUREFLOW_NEXT_ALBUM PLA_RIGHT
#define PICTUREFLOW_NEXT_ALBUM_REPEAT PLA_RIGHT_REPEAT
#define PICTUREFLOW_PREV_ALBUM PLA_LEFT
#define PICTUREFLOW_PREV_ALBUM_REPEAT PLA_LEFT_REPEAT
#define PICTUREFLOW_NEXT_TRACK PLA_DOWN
#define PICTUREFLOW_NEXT_TRACK_REPEAT PLA_DOWN_REPEAT
#define PICTUREFLOW_PREV_TRACK PLA_UP
#define PICTUREFLOW_PREV_TRACK_REPEAT PLA_UP_REPEAT
#endif
#define PICTUREFLOW_MENU PLA_MENU
#define PICTUREFLOW_QUIT PLA_QUIT
#define PICTUREFLOW_SELECT_ALBUM PLA_FIRE
/* for fixed-point arithmetic, we need minimum 32-bit long
long long (64-bit) might be useful for multiplication and division */
#define PFreal long
#define PFREAL_SHIFT 10
#define PFREAL_FACTOR (1 << PFREAL_SHIFT)
#define PFREAL_ONE (1 << PFREAL_SHIFT)
#define PFREAL_HALF (PFREAL_ONE >> 1)
#define IANGLE_MAX 1024
#define IANGLE_MASK 1023
/* maximum size of an slide */
#define MAX_IMG_WIDTH LCD_WIDTH
#define MAX_IMG_HEIGHT LCD_HEIGHT
#if (LCD_HEIGHT < 100)
#define PREFERRED_IMG_WIDTH 50
#define PREFERRED_IMG_HEIGHT 50
#else
#define PREFERRED_IMG_WIDTH 100
#define PREFERRED_IMG_HEIGHT 100
#endif
#define BUFFER_WIDTH LCD_WIDTH
#define BUFFER_HEIGHT LCD_HEIGHT
#define SLIDE_CACHE_SIZE 100
#define MAX_SLIDES_COUNT 10
#define SPACING_BETWEEN_SLIDE 40
#define EXTRA_SPACING_FOR_CENTER_SLIDE 0
#define THREAD_STACK_SIZE DEFAULT_STACK_SIZE + 0x200
#define CACHE_PREFIX PLUGIN_DEMOS_DIR "/pictureflow"
#define EV_EXIT 9999
#define EV_WAKEUP 1337
/* maximum number of albums */
#define MAX_ALBUMS 1024
#define AVG_ALBUM_NAME_LENGTH 20
#define MAX_TRACKS 50
#define AVG_TRACK_NAME_LENGTH 20
#define UNIQBUF_SIZE (64*1024)
#define EMPTY_SLIDE CACHE_PREFIX "/emptyslide.pfraw"
#define CONFIG_FILE CACHE_PREFIX "/pictureflow.config"
/* Error return values */
#define ERROR_NO_ALBUMS -1
#define ERROR_BUFFER_FULL -2
/** structs we use */
struct slide_data {
int slide_index;
int angle;
PFreal cx;
PFreal cy;
PFreal distance;
};
struct slide_cache {
int index; /* index of the cached slide */
int hid; /* handle ID of the cached slide */
long touched; /* last time the slide was touched */
};
struct album_data {
int name_idx;
long seek;
};
struct track_data {
int name_idx;
long seek;
};
struct rect {
int left;
int right;
int top;
int bottom;
};
struct load_slide_event_data {
int slide_index;
int cache_index;
};
struct pfraw_header {
int32_t width; /* bmap width in pixels */
int32_t height; /* bmap height in pixels */
};
const struct picture logos[]={
{pictureflow_logo, BMPWIDTH_pictureflow_logo, BMPHEIGHT_pictureflow_logo},
};
struct config_data {
long avg_album_width;
int spacing_between_slides;
int extra_spacing_for_center_slide;
int show_slides;
int zoom;
};
/** below we allocate the memory we want to use **/
static fb_data *buffer; /* for now it always points to the lcd framebuffer */
static PFreal rays[BUFFER_WIDTH];
static struct slide_data center_slide;
static struct slide_data left_slides[MAX_SLIDES_COUNT];
static struct slide_data right_slides[MAX_SLIDES_COUNT];
static int slide_frame;
static int step;
static int target;
static int fade;
static int center_index; /* index of the slide that is in the center */
static int itilt;
static PFreal offsetX;
static PFreal offsetY;
static bool show_fps; /* show fps in the main screen */
static int number_of_slides;
static struct slide_cache cache[SLIDE_CACHE_SIZE];
static int slide_cache_in_use;
/* use long for aligning */
unsigned long thread_stack[THREAD_STACK_SIZE / sizeof(long)];
static int slide_cache_stack[SLIDE_CACHE_SIZE]; /* queue (as array) for scheduling load_surface */
static int slide_cache_stack_index;
struct mutex slide_cache_stack_lock;
static int empty_slide_hid;
struct thread_entry *thread_id;
struct event_queue thread_q;
static char tmp_path_name[MAX_PATH];
static long uniqbuf[UNIQBUF_SIZE];
static struct tagcache_search tcs;
static struct album_data album[MAX_ALBUMS];
static char album_names[MAX_ALBUMS*AVG_ALBUM_NAME_LENGTH];
static int album_count;
static char track_names[MAX_TRACKS * AVG_TRACK_NAME_LENGTH];
static struct track_data tracks[MAX_TRACKS];
static int track_count;
static int track_index;
static int selected_track;
static int selected_track_pulse;
static fb_data *input_bmp_buffer;
static fb_data *output_bmp_buffer;
static int input_hid;
static int output_hid;
static struct config_data config;
static int old_drawmode;
static bool thread_is_running;
static int cover_animation_keyframe;
static int extra_fade;
static int albumtxt_x = 0;
static int albumtxt_dir = -1;
static int prev_center_index = -1;
static int start_index_track_list = 0;
static int track_list_visible_entries = 0;
static int track_scroll_index = 0;
static int track_scroll_dir = 1;
/*
Proposals for transitions:
pf_idle -> pf_scrolling : NEXT_ALBUM/PREV_ALBUM pressed
-> pf_cover_in -> pf_show_tracks : SELECT_ALBUM clicked
pf_scrolling -> pf_idle : NEXT_ALBUM/PREV_ALBUM released
pf_show_tracks -> pf_cover_out -> pf_idle : SELECT_ALBUM pressed
TODO:
pf_show_tracks -> pf_cover_out -> pf_idle : MENU_PRESSED pressed
pf_show_tracks -> play_track() -> exit() : SELECT_ALBUM pressed
pf_idle, pf_scrolling -> show_menu(): MENU_PRESSED
*/
enum pf_states {
pf_idle = 0,
pf_scrolling,
pf_cover_in,
pf_show_tracks,
pf_cover_out
};
static int pf_state;
/** code */
bool create_bmp(struct bitmap* input_bmp, char *target_path, bool resize);
int load_surface(int);
static inline PFreal fmul(PFreal a, PFreal b)
{
return (a*b) >> PFREAL_SHIFT;
}
/* There are some precision issues when not using (long long) which in turn
takes very long to compute... I guess the best solution would be to optimize
the computations so it only requires a single long */
static inline PFreal fdiv(PFreal num, PFreal den)
{
long long p = (long long) (num) << (PFREAL_SHIFT * 2);
long long q = p / (long long) den;
long long r = q >> PFREAL_SHIFT;
return r;
}
#define fmin(a,b) (((a) < (b)) ? (a) : (b))
#define fmax(a,b) (((a) > (b)) ? (a) : (b))
#define fbound(min,val,max) (fmax((min),fmin((max),(val))))
#if 0
#define fmul(a,b) ( ((a)*(b)) >> PFREAL_SHIFT )
#define fdiv(n,m) ( ((n)<< PFREAL_SHIFT ) / m )
#define fconv(a, q1, q2) (((q2)>(q1)) ? (a)<<((q2)-(q1)) : (a)>>((q1)-(q2)))
#define tofloat(a, q) ( (float)(a) / (float)(1<<(q)) )
static inline PFreal fmul(PFreal a, PFreal b)
{
return (a*b) >> PFREAL_SHIFT;
}
static inline PFreal fdiv(PFreal n, PFreal m)
{
return (n<<(PFREAL_SHIFT))/m;
}
#endif
/* warning: regenerate the table if IANGLE_MAX and PFREAL_SHIFT are changed! */
static const PFreal sin_tab[] = {
3, 103, 202, 300, 394, 485, 571, 652,
726, 793, 853, 904, 947, 980, 1004, 1019,
1023, 1018, 1003, 978, 944, 901, 849, 789,
721, 647, 566, 479, 388, 294, 196, 97,
-4, -104, -203, -301, -395, -486, -572, -653,
-727, -794, -854, -905, -948, -981, -1005, -1020,
-1024, -1019, -1004, -979, -945, -902, -850, -790,
-722, -648, -567, -480, -389, -295, -197, -98,
3
};
static inline PFreal fsin(int iangle)
{
while(iangle < 0)
iangle += IANGLE_MAX;
iangle &= IANGLE_MASK;
int i = (iangle >> 4);
PFreal p = sin_tab[i];
PFreal q = sin_tab[(i+1)];
PFreal g = (q - p);
return p + g * (iangle-i*16)/16;
}
static inline PFreal fcos(int iangle)
{
return fsin(iangle + (IANGLE_MAX >> 2));
}
/**
Create an index of all albums from the database.
Also store the album names so we can access them later.
*/
int create_album_index(void)
{
rb->memset(&tcs, 0, sizeof(struct tagcache_search) );
album_count = 0;
rb->tagcache_search(&tcs, tag_album);
rb->tagcache_search_set_uniqbuf(&tcs, uniqbuf, UNIQBUF_SIZE);
int l, old_l = 0;
album[0].name_idx = 0;
while (rb->tagcache_get_next(&tcs) && album_count < MAX_ALBUMS)
{
l = rb->strlen(tcs.result) + 1;
if ( album_count > 0 )
album[album_count].name_idx = album[album_count-1].name_idx + old_l;
if ( (album[album_count].name_idx + l) > MAX_ALBUMS*AVG_ALBUM_NAME_LENGTH )
/* not enough memory */
return ERROR_BUFFER_FULL;
rb->strcpy(album_names + album[album_count].name_idx, tcs.result);
album[album_count].seek = tcs.result_seek;
old_l = l;
album_count++;
}
rb->tagcache_search_finish(&tcs);
return (album_count > 0) ? 0 : ERROR_NO_ALBUMS;
}
/**
Return a pointer to the album name of the given slide_index
*/
char* get_album_name(const int slide_index)
{
return album_names + album[slide_index].name_idx;
}
/**
Return a pointer to the track name of the active album
create_track_index has to be called first.
*/
char* get_track_name(const int track_index)
{
if ( track_index < track_count )
return track_names + tracks[track_index].name_idx;
return 0;
}
/**
Create the track index of the given slide_index.
*/
int create_track_index(const int slide_index)
{
if ( slide_index == track_index ) {
return -1;
}
if (!rb->tagcache_search(&tcs, tag_title))
return -1;
int ret = 0;
char temp_titles[MAX_TRACKS][AVG_TRACK_NAME_LENGTH*4];
int temp_seeks[MAX_TRACKS];
rb->tagcache_search_add_filter(&tcs, tag_album, album[slide_index].seek);
track_count=0;
int string_index = 0;
int l, track_num, heighest_index = 0;
for(l=0;l<MAX_TRACKS;l++)
temp_titles[l][0] = '\0';
while (rb->tagcache_get_next(&tcs) && track_count < MAX_TRACKS)
{
track_num = rb->tagcache_get_numeric(&tcs, tag_tracknumber) - 1;
if (track_num >= 0)
{
rb->snprintf(temp_titles[track_num],sizeof(temp_titles[track_num]), "%d: %s",
track_num+1, tcs.result);
temp_seeks[track_num] = tcs.result_seek;
}
else
{
track_num = 0;
while (temp_titles[track_num][0] != '\0')
track_num++;
rb->strcpy(temp_titles[track_num], tcs.result);
temp_seeks[track_num] = tcs.result_seek;
}
if (track_num > heighest_index)
heighest_index = track_num;
track_count++;
}
rb->tagcache_search_finish(&tcs);
track_index = slide_index;
/* now fix the track list order */
l = 0;
track_count = 0;
while (l < heighest_index &&
string_index < MAX_TRACKS*AVG_TRACK_NAME_LENGTH)
{
if (temp_titles[l][0] != '\0')
{
rb->strcpy(track_names + string_index, temp_titles[l]);
tracks[track_count].name_idx = string_index;
tracks[track_count].seek = temp_seeks[l];
string_index += rb->strlen(temp_titles[l]) + 1;
track_count++;
}
l++;
}
if (ret != 0)
return ret;
else
return (track_count > 0) ? 0 : -1;
}
/**
Determine filename of the album art for the given slide_index and
store the result in buf.
The algorithm looks for the first track of the given album uses
find_albumart to find the filename.
*/
bool get_albumart_for_index_from_db(const int slide_index, char *buf, int buflen)
{
if ( slide_index == -1 )
{
rb->strncpy( buf, EMPTY_SLIDE, buflen );
}
if (!rb->tagcache_search(&tcs, tag_filename))
return false;
bool result;
/* find the first track of the album */
rb->tagcache_search_add_filter(&tcs, tag_album, album[slide_index].seek);
if ( rb->tagcache_get_next(&tcs) ) {
struct mp3entry id3;
char size[9];
rb->snprintf(size, sizeof(size), ".%dx%d", PREFERRED_IMG_WIDTH,
PREFERRED_IMG_HEIGHT);
rb->strncpy( (char*)&id3.path, tcs.result, MAX_PATH );
id3.album = get_album_name(slide_index);
if ( rb->search_albumart_files(&id3, size, buf, buflen) )
result = true;
else if ( rb->search_albumart_files(&id3, "", buf, buflen) )
result = true;
else
result = false;
}
else {
/* did not find a matching track */
result = false;
}
rb->tagcache_search_finish(&tcs);
return result;
}
/**
Draw the PictureFlow logo
*/
void draw_splashscreen(void)
{
struct screen* display = rb->screens[0];
rb->lcd_set_background(LCD_RGBPACK(0,0,0));
rb->lcd_set_foreground(LCD_RGBPACK(255,255,255));
rb->lcd_clear_display();
const struct picture* logo = &(logos[display->screen_type]);
picture_draw(display, logo, (LCD_WIDTH - logo->width) / 2, 10);
rb->lcd_update();
}
/**
Draw a simple progress bar
*/
void draw_progressbar(int step)
{
int txt_w, txt_h;
const int bar_height = 22;
const int w = LCD_WIDTH - 20;
const int x = 10;
rb->lcd_getstringsize("Preparing album artwork", &txt_w, &txt_h);
int y = (LCD_HEIGHT - txt_h)/2;
rb->lcd_putsxy((LCD_WIDTH - txt_w)/2, y, "Preparing album artwork");
y += (txt_h + 5);
rb->lcd_set_foreground(LCD_RGBPACK(100,100,100));
rb->lcd_drawrect(x, y, w+2, bar_height);
rb->lcd_set_foreground(LCD_RGBPACK(165, 231, 82));
rb->lcd_fillrect(x+1, y+1, step * w / album_count, bar_height-2);
rb->lcd_set_foreground(LCD_RGBPACK(255,255,255));
rb->lcd_update();
rb->yield();
}
/**
Allocate temporary buffers
*/
bool allocate_buffers(void)
{
int input_size = MAX_IMG_WIDTH * MAX_IMG_HEIGHT * sizeof( fb_data );
int output_size = MAX_IMG_WIDTH * MAX_IMG_HEIGHT * sizeof( fb_data ) * 2;
input_hid = rb->bufalloc(NULL, input_size, TYPE_BITMAP);
if (input_hid < 0)
return false;
if (rb->bufgetdata(input_hid, 0, (void *)&input_bmp_buffer) < input_size) {
rb->bufclose(input_hid);
return false;
}
output_hid = rb->bufalloc(NULL, output_size, TYPE_BITMAP);
if (output_hid < 0) {
rb->bufclose(input_hid);
return false;
}
if (rb->bufgetdata(output_hid, 0, (void *)&output_bmp_buffer) < output_size) {
rb->bufclose(output_hid);
return false;
}
return true;
}
/**
Free the temporary buffers
*/
bool free_buffers(void)
{
rb->bufclose(input_hid);
rb->bufclose(output_hid);
return true;
}
/**
Precomupte the album art images and store them in CACHE_PREFIX.
*/
bool create_albumart_cache(bool force)
{
number_of_slides = album_count;
int fh,ret;
if ( ! force && rb->file_exists( CACHE_PREFIX "/ready" ) ) return true;
int i, slides = 0;
struct bitmap input_bmp;
config.avg_album_width = 0;
for (i=0; i < album_count; i++)
{
draw_progressbar(i);
if (!get_albumart_for_index_from_db(i, tmp_path_name, MAX_PATH))
continue;
input_bmp.data = (char *)input_bmp_buffer;
ret = rb->read_bmp_file(tmp_path_name, &input_bmp,
sizeof(fb_data)*MAX_IMG_WIDTH*MAX_IMG_HEIGHT,
FORMAT_NATIVE);
if (ret <= 0) {
rb->splash(HZ, "Could not read bmp");
continue; /* skip missing/broken files */
}
rb->snprintf(tmp_path_name, sizeof(tmp_path_name), CACHE_PREFIX "/%d.pfraw", i);
if (!create_bmp(&input_bmp, tmp_path_name, false)) {
rb->splash(HZ, "Could not write bmp");
}
config.avg_album_width += input_bmp.width;
slides++;
if ( rb->button_get(false) == PICTUREFLOW_MENU ) return false;
}
if ( slides == 0 ) {
rb->splash(2*HZ, "No albums found");
return false;
}
config.avg_album_width /= slides;
if ( config.avg_album_width == 0 ) {
rb->splash(HZ, "album size is 0");
return false;
}
fh = rb->creat( CACHE_PREFIX "/ready" );
rb->close(fh);
return true;
}
/**
Return the index on the stack of slide_index.
Return -1 if slide_index is not on the stack.
*/
static inline int slide_stack_get_index(const int slide_index)
{
int i = slide_cache_stack_index + 1;
while (i--) {
if ( slide_cache_stack[i] == slide_index ) return i;
};
return -1;
}
/**
Push the slide_index on the stack so the image will be loaded.
The algorithm tries to keep the center_index on top and the
slide_index as high as possible (so second if center_index is
on the stack).
*/
void slide_stack_push(const int slide_index)
{
rb->mutex_lock(&slide_cache_stack_lock);
if ( slide_cache_stack_index == -1 ) {
/* empty stack, no checks at all */
slide_cache_stack[ ++slide_cache_stack_index ] = slide_index;
rb->mutex_unlock(&slide_cache_stack_lock);
return;
}
int i = slide_stack_get_index( slide_index );
if ( i == slide_cache_stack_index ) {
/* slide_index is on top, so we do not change anything */
rb->mutex_unlock(&slide_cache_stack_lock);
return;
}
if ( i >= 0 ) {
/* slide_index is already on the stack, but not on top */
int tmp = slide_cache_stack[ slide_cache_stack_index ];
if ( tmp == center_index ) {
/* the center_index is on top of the stack so do not touch that */
if ( slide_cache_stack_index > 0 ) {
/* but maybe it is possible to swap the given slide_index to the second place */
tmp = slide_cache_stack[ slide_cache_stack_index -1 ];
slide_cache_stack[ slide_cache_stack_index - 1 ] = slide_cache_stack[ i ];
slide_cache_stack[ i ] = tmp;
}
}
else {
/* if the center_index is not on top (i.e. already loaded) bring the slide_index to the top */
slide_cache_stack[ slide_cache_stack_index ] = slide_cache_stack[ i ];
slide_cache_stack[ i ] = tmp;
}
}
else {
/* slide_index is not on the stack */
if ( slide_cache_stack_index >= SLIDE_CACHE_SIZE-1 ) {
/* if we exceeded the stack size, clear the first half of the stack */
slide_cache_stack_index = SLIDE_CACHE_SIZE/2;
for (i = 0; i <= slide_cache_stack_index ; i++)
slide_cache_stack[ i ] = slide_cache_stack[ i + slide_cache_stack_index ];
}
if ( slide_cache_stack[ slide_cache_stack_index ] == center_index ) {
/* if the center_index is on top leave it there */
slide_cache_stack[ slide_cache_stack_index ] = slide_index;
slide_cache_stack[ ++slide_cache_stack_index ] = center_index;
}
else {
/* usual stack case: push the slide_index on top */
slide_cache_stack[ ++slide_cache_stack_index ] = slide_index;
}
}
rb->mutex_unlock(&slide_cache_stack_lock);
}
/**
Pop the topmost item from the stack and decrease the stack size
*/
static inline int slide_stack_pop(void)
{
rb->mutex_lock(&slide_cache_stack_lock);
int result;
if ( slide_cache_stack_index >= 0 )
result = slide_cache_stack[ slide_cache_stack_index-- ];
else
result = -1;
rb->mutex_unlock(&slide_cache_stack_lock);
return result;
}
/**
Load the slide into the cache.
Thus we have to queue the loading request in our thread while discarding the
oldest slide.
*/
static inline void request_surface(const int slide_index)
{
slide_stack_push(slide_index);
rb->queue_post(&thread_q, EV_WAKEUP, 0);
}
/**
Thread used for loading and preparing bitmaps in the background
*/
void thread(void)
{
long sleep_time = 5 * HZ;
struct queue_event ev;
while (1) {
rb->queue_wait_w_tmo(&thread_q, &ev, sleep_time);
switch (ev.id) {
case EV_EXIT:
return;
case EV_WAKEUP:
/* we just woke up */
break;
}
int slide_index;
while ( (slide_index = slide_stack_pop()) != -1 ) {
load_surface( slide_index );
rb->queue_wait_w_tmo(&thread_q, &ev, HZ/10);
switch (ev.id) {
case EV_EXIT:
return;
}
}
}
}
/**
End the thread by posting the EV_EXIT event
*/
void end_pf_thread(void)
{
if ( thread_is_running ) {
rb->queue_post(&thread_q, EV_EXIT, 0);
rb->thread_wait(thread_id);
/* remove the thread's queue from the broadcast list */
rb->queue_delete(&thread_q);
thread_is_running = false;
}
}
/**
Create the thread an setup the event queue
*/
bool create_pf_thread(void)
{
rb->queue_init(&thread_q, true); /* put the thread's queue in the bcast list */
if ((thread_id = rb->create_thread(
thread,
thread_stack,
sizeof(thread_stack),
0,
"Picture load thread"
IF_PRIO(, PRIORITY_BACKGROUND)
IF_COP(, CPU)
)
) == NULL) {
return false;
}
thread_is_running = true;
return true;
}
/**
Safe the given bitmap as filename in the pfraw format
*/
bool save_pfraw(char* filename, struct bitmap *bm)
{
struct pfraw_header bmph;
bmph.width = bm->width;
bmph.height = bm->height;
int fh = rb->creat( filename );
if( fh < 0 ) return false;
rb->write( fh, &bmph, sizeof( struct pfraw_header ) );
int y;
for( y = 0; y < bm->height; y++ )
{
fb_data *d = (fb_data*)( bm->data ) + (y*bm->width);
rb->write( fh, d, sizeof( fb_data ) * bm->width );
}
rb->close( fh );
return true;
}
/**
Read the pfraw image given as filename and return the hid of the buffer
*/
int read_pfraw(char* filename)
{
struct pfraw_header bmph;
int fh = rb->open(filename, O_RDONLY);
rb->read(fh, &bmph, sizeof(struct pfraw_header));
if( fh < 0 ) {
return empty_slide_hid;
}
int size = sizeof(struct bitmap) + sizeof( fb_data ) * bmph.width * bmph.height;
int hid = rb->bufalloc(NULL, size, TYPE_BITMAP);
if (hid < 0) {
rb->close( fh );
return -1;
}
struct bitmap *bm;
if (rb->bufgetdata(hid, 0, (void *)&bm) < size) {
rb->close( fh );
return -1;
}
bm->width = bmph.width;
bm->height = bmph.height;
bm->format = FORMAT_NATIVE;
bm->data = ((unsigned char *)bm + sizeof(struct bitmap));
int y;
for( y = 0; y < bm->height; y++ )
{
fb_data *d = (fb_data*)( bm->data ) + (y*bm->width);
rb->read( fh, d , sizeof( fb_data ) * bm->width );
}
rb->close( fh );
return hid;
}
/**
Create the slide with its reflection for the given slide_index and filename
and store it as pfraw in CACHE_PREFIX/[slide_index].pfraw
*/
bool create_bmp(struct bitmap *input_bmp, char *target_path, bool resize)
{
struct bitmap output_bmp;
output_bmp.format = input_bmp->format;
output_bmp.data = (char *)output_bmp_buffer;
if ( resize ) {
/* resize image */
output_bmp.width = config.avg_album_width;
output_bmp.height = config.avg_album_width;
simple_resize_bitmap(input_bmp, &output_bmp);
/* Resized bitmap is now in the output buffer,
copy it back to the input buffer */
rb->memcpy(input_bmp_buffer, output_bmp_buffer,
config.avg_album_width * config.avg_album_width * sizeof(fb_data));
input_bmp->data = (char *)input_bmp_buffer;
input_bmp->width = output_bmp.width;
input_bmp->height = output_bmp.height;
}
output_bmp.width = input_bmp->width * 2;
output_bmp.height = input_bmp->height;
fb_data *src = (fb_data *)input_bmp->data;
fb_data *dst = (fb_data *)output_bmp.data;
/* transpose the image, this is to speed-up the rendering
because we process one column at a time
(and much better and faster to work row-wise, i.e in one scanline) */
int hofs = input_bmp->width / 3;
rb->memset(dst, 0, sizeof(fb_data) * output_bmp.width * output_bmp.height);
int x, y;
for (x = 0; x < input_bmp->width; x++)
for (y = 0; y < input_bmp->height; y++)
dst[output_bmp.width * x + (hofs + y)] =
src[y * input_bmp->width + x];
/* create the reflection */
int ht = input_bmp->height - hofs;
int hte = ht;
for (x = 0; x < input_bmp->width; x++) {
for (y = 0; y < ht; y++) {
fb_data color = src[x + input_bmp->width * (input_bmp->height - y - 1)];
int r = RGB_UNPACK_RED(color) * (hte - y) / hte * 3 / 5;
int g = RGB_UNPACK_GREEN(color) * (hte - y) / hte * 3 / 5;
int b = RGB_UNPACK_BLUE(color) * (hte - y) / hte * 3 / 5;
dst[output_bmp.height + hofs + y + output_bmp.width * x] =
LCD_RGBPACK(r, g, b);
}
}
return save_pfraw(target_path, &output_bmp);
}
/**
Load the surface for the given slide_index into the cache at cache_index.
*/
static inline bool load_and_prepare_surface(const int slide_index,
const int cache_index)
{
rb->snprintf(tmp_path_name, sizeof(tmp_path_name), CACHE_PREFIX "/%d.pfraw",
slide_index);
int hid = read_pfraw(tmp_path_name);
if (hid < 0)
return false;
cache[cache_index].hid = hid;
if ( cache_index < SLIDE_CACHE_SIZE ) {
cache[cache_index].index = slide_index;
cache[cache_index].touched = *rb->current_tick;
}
return true;
}
/**
Load the surface from a bmp and overwrite the oldest slide in the cache
if necessary.
*/
int load_surface(const int slide_index)
{
long oldest_tick = *rb->current_tick;
int oldest_slide = 0;
int i;
if ( slide_cache_in_use < SLIDE_CACHE_SIZE ) { /* initial fill */
oldest_slide = slide_cache_in_use;
load_and_prepare_surface(slide_index, slide_cache_in_use++);
}
else {
for (i = 0; i < SLIDE_CACHE_SIZE; i++) { /* look for oldest slide */
if (cache[i].touched < oldest_tick) {
oldest_slide = i;
oldest_tick = cache[i].touched;
}
}
if (cache[oldest_slide].hid != empty_slide_hid) {
rb->bufclose(cache[oldest_slide].hid);
cache[oldest_slide].hid = -1;
}
load_and_prepare_surface(slide_index, oldest_slide);
}
return oldest_slide;
}
/**
Get a slide from the buffer
*/
static inline struct bitmap *get_slide(const int hid)
{
if (hid < 0)
return NULL;
struct bitmap *bmp;
ssize_t ret = rb->bufgetdata(hid, 0, (void *)&bmp);
if (ret < 0)
return NULL;
return bmp;
}
/**
Return the requested surface
*/
static inline struct bitmap *surface(const int slide_index)
{
if (slide_index < 0)
return 0;
if (slide_index >= number_of_slides)
return 0;
int i;
for (i = 0; i < slide_cache_in_use; i++) { /* maybe do the inverse mapping => implies dynamic allocation? */
if ( cache[i].index == slide_index ) {
/* We have already loaded our slide, so touch it and return it. */
cache[i].touched = *rb->current_tick;
return get_slide(cache[i].hid);
}
}
request_surface(slide_index);
return get_slide(empty_slide_hid);
}
/**
adjust slides so that they are in "steady state" position
*/
void reset_slides(void)
{
center_slide.angle = 0;
center_slide.cx = 0;
center_slide.cy = 0;
center_slide.distance = 0;
center_slide.slide_index = center_index;
int i;
for (i = 0; i < config.show_slides; i++) {
struct slide_data *si = &left_slides[i];
si->angle = itilt;
si->cx = -(offsetX + config.spacing_between_slides * i * PFREAL_ONE);
si->cy = offsetY;
si->slide_index = center_index - 1 - i;
si->distance = 0;
}
for (i = 0; i < config.show_slides; i++) {
struct slide_data *si = &right_slides[i];
si->angle = -itilt;
si->cx = offsetX + config.spacing_between_slides * i * PFREAL_ONE;
si->cy = offsetY;
si->slide_index = center_index + 1 + i;
si->distance = 0;
}
}
/**
Updates look-up table and other stuff necessary for the rendering.
Call this when the viewport size or slide dimension is changed.
*/
void recalc_table(void)
{
int w = (BUFFER_WIDTH + 1) / 2;
int h = (BUFFER_HEIGHT + 1) / 2;
int i;
for (i = 0; i < w; i++) {
PFreal gg = (PFREAL_HALF + i * PFREAL_ONE) / (2 * h);
rays[w - i - 1] = -gg;
rays[w + i] = gg;
}
itilt = 70 * IANGLE_MAX / 360; /* approx. 70 degrees tilted */
offsetX = config.avg_album_width / 2 * (PFREAL_ONE - fcos(itilt));
offsetY = config.avg_album_width / 2 * fsin(itilt);
offsetX += config.avg_album_width * PFREAL_ONE;
offsetY += config.avg_album_width * PFREAL_ONE / 4;
offsetX += config.extra_spacing_for_center_slide << PFREAL_SHIFT;
}
/**
Fade the given color by spreading the fb_data (ushort)
to an uint, multiply and compress the result back to a ushort.
*/
#if (LCD_PIXELFORMAT == RGB565SWAPPED)
static inline fb_data fade_color(fb_data c, unsigned int a)
{
c = swap16(c);
unsigned int p = ((((c|(c<<16)) & 0x07e0f81f) * a) >> 5) & 0x07e0f81f;
return swap16( (fb_data) (p | ( p >> 16 )) );
}
#else
static inline fb_data fade_color(fb_data c, unsigned int a)
{
unsigned int p = ((((c|(c<<16)) & 0x07e0f81f) * a) >> 5) & 0x07e0f81f;
return (p | ( p >> 16 ));
}
#endif
/**
Render a single slide
*/
void render_slide(struct slide_data *slide, struct rect *result_rect,
const int alpha, int col1, int col2)
{
rb->memset(result_rect, 0, sizeof(struct rect));
struct bitmap *bmp = surface(slide->slide_index);
if (!bmp) {
return;
}
fb_data *src = (fb_data *)bmp->data;
const int sw = bmp->height;
const int sh = bmp->width;
const int h = LCD_HEIGHT;
const int w = LCD_WIDTH;
if (col1 > col2) {
int c = col2;
col2 = col1;
col1 = c;
}
col1 = (col1 >= 0) ? col1 : 0;
col2 = (col2 >= 0) ? col2 : w - 1;
col1 = fmin(col1, w - 1);
col2 = fmin(col2, w - 1);
int distance = (h + slide->distance) * 100 / config.zoom;
if (distance < 100 ) distance = 100; /* clamp distances */
PFreal sdx = fcos(slide->angle);
PFreal sdy = fsin(slide->angle);
PFreal xs = slide->cx - bmp->width * sdx / 4;
PFreal ys = slide->cy - bmp->width * sdy / 4;
PFreal dist = distance * PFREAL_ONE;
const int alpha4 = alpha >> 3;
int xi = fmax((PFreal) 0,
((w * PFREAL_ONE / 2) +
fdiv(xs * h, dist + ys)) >> PFREAL_SHIFT);
if (xi >= w) {
return;
}
bool flag = false;
result_rect->left = xi;
int x;
for (x = fmax(xi, col1); x <= col2; x++) {
PFreal hity = 0;
PFreal fk = rays[x];
if (sdy) {
fk = fk - fdiv(sdx, sdy);
hity = -fdiv(( rays[x] * distance
- slide->cx
+ slide->cy * sdx / sdy), fk);
}
dist = distance * PFREAL_ONE + hity;
if (dist < 0)
continue;
PFreal hitx = fmul(dist, rays[x]);
PFreal hitdist = fdiv(hitx - slide->cx, sdx);
const int column = (sw >> 1) + (hitdist >> PFREAL_SHIFT);
if (column >= sw)
break;
if (column < 0)
continue;
result_rect->right = x;
if (!flag)
result_rect->left = x;
flag = true;
int y1 = (h >> 1);
int y2 = y1 + 1;
fb_data *pixel1 = &buffer[y1 * BUFFER_WIDTH + x];
fb_data *pixel2 = &buffer[y2 * BUFFER_WIDTH + x];
const int pixelstep = pixel2 - pixel1;
int center = (sh >> 1);
int dy = dist / h;
int p1 = center * PFREAL_ONE - (dy >> 2);
int p2 = center * PFREAL_ONE + (dy >> 2);
const fb_data *ptr = &src[column * bmp->width];
if (alpha == 256)
while ((y1 >= 0) && (y2 < h) && (p1 >= 0)) {
*pixel1 = ptr[p1 >> PFREAL_SHIFT];
*pixel2 = ptr[p2 >> PFREAL_SHIFT];
p1 -= dy;
p2 += dy;
y1--;
y2++;
pixel1 -= pixelstep;
pixel2 += pixelstep;
} else
while ((y1 >= 0) && (y2 < h) && (p1 >= 0)) {
*pixel1 = fade_color(ptr[p1 >> PFREAL_SHIFT], alpha4);
*pixel2 = fade_color(ptr[p2 >> PFREAL_SHIFT], alpha4);
p1 -= dy;
p2 += dy;
y1--;
y2++;
pixel1 -= pixelstep;
pixel2 += pixelstep;
}
}
/* let the music play... */
rb->yield();
result_rect->top = 0;
result_rect->bottom = h - 1;
return;
}
/**
Jump the the given slide_index
*/
static inline void set_current_slide(const int slide_index)
{
step = 0;
center_index = fbound(slide_index, 0, number_of_slides - 1);
target = center_index;
slide_frame = slide_index << 16;
reset_slides();
}
/**
Start the animation for changing slides
*/
void start_animation(void)
{
step = (target < center_slide.slide_index) ? -1 : 1;
pf_state = pf_scrolling;
}
/**
Go to the previous slide
*/
void show_previous_slide(void)
{
if (step == 0) {
if (center_index > 0) {
target = center_index - 1;
start_animation();
}
} else if ( step > 0 ) {
target = center_index;
start_animation();
} else {
target = fmax(0, center_index - 2);
}
}
/**
Go to the next slide
*/
void show_next_slide(void)
{
if (step == 0) {
if (center_index < number_of_slides - 1) {
target = center_index + 1;
start_animation();
}
} else if ( step < 0 ) {
target = center_index;
start_animation();
} else {
target = fmin(center_index + 2, number_of_slides - 1);
}
}
/**
Return true if the rect has size 0
*/
static inline bool is_empty_rect(struct rect *r)
{
return ((r->left == 0) && (r->right == 0) && (r->top == 0)
&& (r->bottom == 0));
}
/**
Render the slides. Updates only the offscreen buffer.
*/
void render_all_slides(void)
{
rb->lcd_set_background(LCD_RGBPACK(0,0,0));
rb->lcd_clear_display(); /* TODO: Optimizes this by e.g. invalidating rects */
int nleft = config.show_slides;
int nright = config.show_slides;
struct rect r;
r.left = LCD_WIDTH; r.top = 0; r.bottom = 0; r.right = 0;
render_slide(&center_slide, &r, 256, -1, -1);
#ifdef DEBUG_DRAW
rb->lcd_drawrect(r.left, r.top, r.right - r.left, r.bottom - r.top);
#endif
int c1 = r.left;
int c2 = r.right;
int index;
if (step == 0) {
/* no animation, boring plain rendering */
for (index = 0; index < nleft - 1; index++) {
int alpha = (index < nleft - 2) ? 256 : 128;
alpha -= extra_fade;
if (alpha < 0 ) alpha = 0;
render_slide(&left_slides[index], &r, alpha, 0, c1 - 1);
if (!is_empty_rect(&r)) {
#ifdef DEBUG_DRAW
rb->lcd_drawrect(r.left, r.top, r.right - r.left, r.bottom - r.top);
#endif
c1 = r.left;
}
}
for (index = 0; index < nright - 1; index++) {
int alpha = (index < nright - 2) ? 256 : 128;
alpha -= extra_fade;
if (alpha < 0 ) alpha = 0;
render_slide(&right_slides[index], &r, alpha, c2 + 1,
BUFFER_WIDTH);
if (!is_empty_rect(&r)) {
#ifdef DEBUG_DRAW
rb->lcd_drawrect(r.left, r.top, r.right - r.left, r.bottom - r.top);
#endif
c2 = r.right;
}
}
} else {
if ( step < 0 ) c1 = BUFFER_WIDTH;
/* the first and last slide must fade in/fade out */
for (index = 0; index < nleft; index++) {
int alpha = 256;
if (index == nleft - 1)
alpha = (step > 0) ? 0 : 128 - fade / 2;
if (index == nleft - 2)
alpha = (step > 0) ? 128 - fade / 2 : 256 - fade / 2;
if (index == nleft - 3)
alpha = (step > 0) ? 256 - fade / 2 : 256;
render_slide(&left_slides[index], &r, alpha, 0, c1 - 1);
if (!is_empty_rect(&r)) {
#ifdef DEBUG_DRAW
rb->lcd_drawrect(r.left, r.top, r.right - r.left, r.bottom - r.top);
#endif
c1 = r.left;
}
}
if ( step > 0 ) c2 = 0;
for (index = 0; index < nright; index++) {
int alpha = (index < nright - 2) ? 256 : 128;
if (index == nright - 1)
alpha = (step > 0) ? fade / 2 : 0;
if (index == nright - 2)
alpha = (step > 0) ? 128 + fade / 2 : fade / 2;
if (index == nright - 3)
alpha = (step > 0) ? 256 : 128 + fade / 2;
render_slide(&right_slides[index], &r, alpha, c2 + 1,
BUFFER_WIDTH);
if (!is_empty_rect(&r)) {
#ifdef DEBUG_DRAW
rb->lcd_drawrect(r.left, r.top, r.right - r.left, r.bottom - r.top);
#endif
c2 = r.right;
}
}
}
}
/**
Updates the animation effect. Call this periodically from a timer.
*/
void update_scroll_animation(void)
{
if (step == 0)
return;
int speed = 16384;
int i;
/* deaccelerate when approaching the target */
if (true) {
const int max = 2 * 65536;
int fi = slide_frame;
fi -= (target << 16);
if (fi < 0)
fi = -fi;
fi = fmin(fi, max);
int ia = IANGLE_MAX * (fi - max / 2) / (max * 2);
speed = 512 + 16384 * (PFREAL_ONE + fsin(ia)) / PFREAL_ONE;
}
slide_frame += speed * step;
int index = slide_frame >> 16;
int pos = slide_frame & 0xffff;
int neg = 65536 - pos;
int tick = (step < 0) ? neg : pos;
PFreal ftick = (tick * PFREAL_ONE) >> 16;
/* the leftmost and rightmost slide must fade away */
fade = pos / 256;
if (step < 0)
index++;
if (center_index != index) {
center_index = index;
slide_frame = index << 16;
center_slide.slide_index = center_index;
for (i = 0; i < config.show_slides; i++)
left_slides[i].slide_index = center_index - 1 - i;
for (i = 0; i < config.show_slides; i++)
right_slides[i].slide_index = center_index + 1 + i;
}
center_slide.angle = (step * tick * itilt) >> 16;
center_slide.cx = -step * fmul(offsetX, ftick);
center_slide.cy = fmul(offsetY, ftick);
if (center_index == target) {
reset_slides();
pf_state = pf_idle;
step = 0;
fade = 256;
return;
}
for (i = 0; i < config.show_slides; i++) {
struct slide_data *si = &left_slides[i];
si->angle = itilt;
si->cx =
-(offsetX + config.spacing_between_slides * i * PFREAL_ONE + step
* config.spacing_between_slides * ftick);
si->cy = offsetY;
}
for (i = 0; i < config.show_slides; i++) {
struct slide_data *si = &right_slides[i];
si->angle = -itilt;
si->cx =
offsetX + config.spacing_between_slides * i * PFREAL_ONE - step
* config.spacing_between_slides * ftick;
si->cy = offsetY;
}
if (step > 0) {
PFreal ftick = (neg * PFREAL_ONE) >> 16;
right_slides[0].angle = -(neg * itilt) >> 16;
right_slides[0].cx = fmul(offsetX, ftick);
right_slides[0].cy = fmul(offsetY, ftick);
} else {
PFreal ftick = (pos * PFREAL_ONE) >> 16;
left_slides[0].angle = (pos * itilt) >> 16;
left_slides[0].cx = -fmul(offsetX, ftick);
left_slides[0].cy = fmul(offsetY, ftick);
}
/* must change direction ? */
if (target < index)
if (step > 0)
step = -1;
if (target > index)
if (step < 0)
step = 1;
}
/**
Cleanup the plugin
*/
void cleanup(void *parameter)
{
(void) parameter;
/* Turn on backlight timeout (revert to settings) */
backlight_use_settings(rb); /* backlight control in lib/helper.c */
int i;
for (i = 0; i < slide_cache_in_use; i++) {
rb->bufclose(cache[i].hid);
}
if ( empty_slide_hid != - 1)
rb->bufclose(empty_slide_hid);
rb->lcd_set_drawmode(old_drawmode);
}
/**
Create the "?" slide, that is shown while loading
or when no cover was found.
*/
int create_empty_slide(bool force)
{
if ( force || ! rb->file_exists( EMPTY_SLIDE ) ) {
struct bitmap input_bmp;
input_bmp.width = BMPWIDTH_pictureflow_emptyslide;
input_bmp.height = BMPHEIGHT_pictureflow_emptyslide;
input_bmp.format = FORMAT_NATIVE;
input_bmp.data = (char*) &pictureflow_emptyslide;
if ( ! create_bmp(&input_bmp, EMPTY_SLIDE, true) ) return false;
}
empty_slide_hid = read_pfraw( EMPTY_SLIDE );
if (empty_slide_hid == -1 ) return false;
return true;
}
/**
Shows the settings menu
*/
int settings_menu(void) {
int selection = 0;
MENUITEM_STRINGLIST(settings_menu, "PictureFlow Settings", NULL, "Show FPS",
"Spacing", "Center margin", "Number of slides", "Zoom",
"Rebuild cache");
do {
selection=rb->do_menu(&settings_menu,&selection, NULL, false);
switch(selection) {
case 0:
rb->set_bool("Show FPS", &show_fps);
break;
case 1:
rb->set_int("Spacing between slides", "", 1,
&(config.spacing_between_slides),
NULL, 1, 0, 100, NULL );
recalc_table();
reset_slides();
break;
case 2:
rb->set_int("Center margin", "", 1,
&(config.extra_spacing_for_center_slide),
NULL, 1, -50, 50, NULL );
recalc_table();
reset_slides();
break;
case 3:
rb->set_int("Number of slides", "", 1, &(config.show_slides),
NULL, 1, 1, MAX_SLIDES_COUNT, NULL );
recalc_table();
reset_slides();
break;
case 4:
rb->set_int("Number of slides", "", 1, &(config.zoom),
NULL, 1, 10, 300, NULL );
recalc_table();
reset_slides();
break;
case 5:
rb->remove(CACHE_PREFIX "/ready");
rb->remove(EMPTY_SLIDE);
rb->splash(HZ, "Cache will be rebuilt on next restart");
break;
case MENU_ATTACHED_USB:
return PLUGIN_USB_CONNECTED;
}
} while ( selection >= 0 );
return 0;
}
/**
Show the main menu
*/
int main_menu(void)
{
int selection = 0;
int result;
rb->lcd_set_foreground(LCD_RGBPACK(255,255,255));
MENUITEM_STRINGLIST(main_menu,"PictureFlow Main Menu",NULL,
"Settings", "Return", "Quit");
while (1) {
switch (rb->do_menu(&main_menu,&selection, NULL, false)) {
case 0:
result = settings_menu();
if ( result != 0 ) return result;
break;
case 1:
return 0;
case 2:
return -1;
case MENU_ATTACHED_USB:
return PLUGIN_USB_CONNECTED;
default:
return 0;
}
}
}
/**
Fill the config struct with some defaults
*/
void set_default_config(void)
{
config.spacing_between_slides = 40;
config.extra_spacing_for_center_slide = 0;
config.show_slides = 3;
config.avg_album_width = 0;
config.zoom = 100;
}
/**
Read the config file.
For now, the size has to match.
Later a version number might be appropiate.
*/
bool read_pfconfig(void)
{
set_default_config();
/* defaults */
int fh = rb->open( CONFIG_FILE, O_RDONLY );
if ( fh < 0 ) { /* no config yet */
return true;
}
int ret = rb->read(fh, &config, sizeof(struct config_data));
rb->close(fh);
if ( ret != sizeof(struct config_data) ) {
set_default_config();
rb->splash(2*HZ, "Config invalid. Using defaults");
}
return true;
}
/**
Write the config file
*/
bool write_pfconfig(void)
{
int fh = rb->creat( CONFIG_FILE );
if( fh < 0 ) return false;
rb->write( fh, &config, sizeof( struct config_data ) );
rb->close( fh );
return true;
}
/**
Animation step for zooming into the current cover
*/
void update_cover_in_animation(void)
{
cover_animation_keyframe++;
if( cover_animation_keyframe < 20 ) {
center_slide.distance-=5;
center_slide.angle+=1;
extra_fade += 13;
}
else if( cover_animation_keyframe < 35 ) {
center_slide.angle+=16;
}
else {
cover_animation_keyframe = 0;
selected_track = 0;
pf_state = pf_show_tracks;
}
}
/**
Animation step for zooming out the current cover
*/
void update_cover_out_animation(void)
{
cover_animation_keyframe++;
if( cover_animation_keyframe <= 15 ) {
center_slide.angle-=16;
}
else if( cover_animation_keyframe < 35 ) {
center_slide.distance+=5;
center_slide.angle-=1;
extra_fade -= 13;
}
else {
cover_animation_keyframe = 0;
pf_state = pf_idle;
}
}
/**
Draw a blue gradient at y with height h
*/
static inline void draw_gradient(int y, int h)
{
static int r, inc, c;
inc = (100 << 8) / h;
c = 0;
selected_track_pulse = (selected_track_pulse+1) % 10;
int c2 = selected_track_pulse - 5;
for (r=0; r<h; r++) {
rb->lcd_set_foreground(LCD_RGBPACK(c2+80-(c >> 9), c2+100-(c >> 9),
c2+250-(c >> 8)));
rb->lcd_hline(0, LCD_WIDTH, r+y);
if ( r > h/2 )
c-=inc;
else
c+=inc;
}
}
/**
Reset the track list after a album change
*/
void reset_track_list(void)
{
int albumtxt_w, albumtxt_h;
const char* albumtxt = get_album_name(center_index);
rb->lcd_getstringsize(albumtxt, &albumtxt_w, &albumtxt_h);
const int height = LCD_HEIGHT-albumtxt_h-10;
track_list_visible_entries = fmin( height/albumtxt_h , track_count );
start_index_track_list = 0;
track_scroll_index = 0;
track_scroll_dir = 1;
selected_track = 0;
}
/**
Display the list of tracks
*/
void show_track_list(void)
{
rb->lcd_clear_display();
if ( center_slide.slide_index != track_index ) {
create_track_index(center_slide.slide_index);
reset_track_list();
}
static int titletxt_w, titletxt_h, titletxt_y, titletxt_x, i, color;
titletxt_y = 0;
if (track_list_visible_entries >= track_count)
{
int albumtxt_h;
const char* albumtxt = get_album_name(center_index);
rb->lcd_getstringsize(albumtxt, NULL, &albumtxt_h);
titletxt_y = ((LCD_HEIGHT-albumtxt_h-10)-(track_count*albumtxt_h))/2;
}
int track_i;
for (i=0; i < track_list_visible_entries; i++) {
track_i = i+start_index_track_list;
rb->lcd_getstringsize(get_track_name(track_i), &titletxt_w, &titletxt_h);
titletxt_x = (LCD_WIDTH-titletxt_w)/2;
if ( track_i == selected_track ) {
draw_gradient(titletxt_y, titletxt_h);
rb->lcd_set_foreground(LCD_RGBPACK(255,255,255));
if (titletxt_w > LCD_WIDTH ) {
if ( titletxt_w + track_scroll_index <= LCD_WIDTH )
track_scroll_dir = 1;
else if ( track_scroll_index >= 0 ) track_scroll_dir = -1;
track_scroll_index += track_scroll_dir*2;
titletxt_x = track_scroll_index;
}
rb->lcd_putsxy(titletxt_x,titletxt_y,get_track_name(track_i));
}
else {
color = 250 - (abs(selected_track - track_i) * 200 / track_count);
rb->lcd_set_foreground(LCD_RGBPACK(color,color,color));
rb->lcd_putsxy(titletxt_x,titletxt_y,get_track_name(track_i));
}
titletxt_y += titletxt_h;
}
}
void select_next_track(void)
{
if ( selected_track < track_count - 1 ) {
selected_track++;
track_scroll_index = 0;
track_scroll_dir = 1;
if (selected_track==(track_list_visible_entries+start_index_track_list))
start_index_track_list++;
}
}
void select_prev_track(void)
{
if (selected_track > 0 ) {
if (selected_track==start_index_track_list) start_index_track_list--;
track_scroll_index = 0;
track_scroll_dir = 1;
selected_track--;
}
}
/**
Draw the current album name
*/
void draw_album_text(void)
{
int albumtxt_w, albumtxt_h;
int albumtxt_y = 0;
char *albumtxt;
int c;
/* Draw album text */
if ( pf_state == pf_scrolling ) {
c = ((slide_frame & 0xffff )/ 255);
if (step < 0) c = 255-c;
if (c > 128 ) { /* half way to next slide .. still not perfect! */
albumtxt = get_album_name(center_index+step);
c = (c-128)*2;
}
else {
albumtxt = get_album_name(center_index);
c = (128-c)*2;
}
}
else {
c= 255;
albumtxt = get_album_name(center_index);
}
rb->lcd_set_foreground(LCD_RGBPACK(c,c,c));
rb->lcd_getstringsize(albumtxt, &albumtxt_w, &albumtxt_h);
if (center_index != prev_center_index) {
albumtxt_x = 0;
albumtxt_dir = -1;
prev_center_index = center_index;
}
albumtxt_y = LCD_HEIGHT-albumtxt_h-10;
if (albumtxt_w > LCD_WIDTH ) {
rb->lcd_putsxy(albumtxt_x, albumtxt_y , albumtxt);
if ( pf_state == pf_idle || pf_state == pf_show_tracks ) {
if ( albumtxt_w + albumtxt_x <= LCD_WIDTH ) albumtxt_dir = 1;
else if ( albumtxt_x >= 0 ) albumtxt_dir = -1;
albumtxt_x += albumtxt_dir;
}
}
else {
rb->lcd_putsxy((LCD_WIDTH - albumtxt_w) /2, albumtxt_y , albumtxt);
}
}
/**
Main function that also contain the main plasma
algorithm.
*/
int main(void)
{
int ret;
draw_splashscreen();
if ( ! rb->dir_exists( CACHE_PREFIX ) ) {
if ( rb->mkdir( CACHE_PREFIX ) < 0 ) {
rb->splash(HZ, "Could not create directory " CACHE_PREFIX );
return PLUGIN_ERROR;
}
}
if (!read_pfconfig()) {
rb->splash(HZ, "Error in config. Please delete " CONFIG_FILE);
return PLUGIN_ERROR;
}
if (!allocate_buffers()) {
rb->splash(HZ, "Could not allocate temporary buffers");
return PLUGIN_ERROR;
}
ret = create_album_index();
if (ret == ERROR_BUFFER_FULL) {
rb->splash(HZ, "Not enough memory for album names");
return PLUGIN_ERROR;
} else if (ret == ERROR_NO_ALBUMS) {
rb->splash(HZ, "No albums found. Please enable database");
return PLUGIN_ERROR;
}
if (!create_albumart_cache(config.avg_album_width == 0)) {
rb->splash(HZ, "Could not create album art cache");
return PLUGIN_ERROR;
}
if (!create_empty_slide(false)) {
rb->splash(HZ, "Could not load the empty slide");
return PLUGIN_ERROR;
}
if (!free_buffers()) {
rb->splash(HZ, "Could not free temporary buffers");
return PLUGIN_ERROR;
}
if (!create_pf_thread()) {
rb->splash(HZ, "Cannot create thread!");
return PLUGIN_ERROR;
}
int i;
/* initialize */
int min_slide_cache = fmin(number_of_slides, SLIDE_CACHE_SIZE);
for (i = 0; i < min_slide_cache; i++) {
cache[i].hid = -1;
cache[i].touched = 0;
slide_cache_stack[i] = SLIDE_CACHE_SIZE-i-1;
}
slide_cache_stack_index = min_slide_cache-1;
slide_cache_in_use = 0;
buffer = rb->lcd_framebuffer;
pf_state = pf_idle;
track_index = -1;
extra_fade = 0;
center_index = 0;
slide_frame = 0;
step = 0;
target = 0;
fade = 256;
show_fps = false;
recalc_table();
reset_slides();
char fpstxt[10];
int button;
int frames = 0;
long last_update = *rb->current_tick;
long current_update;
long update_interval = 100;
int fps = 0;
bool instant_update;
old_drawmode = rb->lcd_get_drawmode();
rb->lcd_set_drawmode(DRMODE_FG);
while (true) {
current_update = *rb->current_tick;
frames++;
/* Initial rendering */
instant_update = false;
/* Handle states */
switch ( pf_state ) {
case pf_scrolling:
update_scroll_animation();
render_all_slides();
instant_update = true;
break;
case pf_cover_in:
update_cover_in_animation();
render_all_slides();
instant_update = true;
break;
case pf_cover_out:
update_cover_out_animation();
render_all_slides();
instant_update = true;
break;
case pf_show_tracks:
show_track_list();
break;
case pf_idle:
render_all_slides();
break;
}
/* Calculate FPS */
if (current_update - last_update > update_interval) {
fps = frames * HZ / (current_update - last_update);
last_update = current_update;
frames = 0;
}
/* Draw FPS */
if (show_fps) {
rb->lcd_set_foreground(LCD_RGBPACK(255, 0, 0));
rb->snprintf(fpstxt, sizeof(fpstxt), "FPS: %d", fps);
rb->lcd_putsxy(0, 0, fpstxt);
}
draw_album_text();
/* Copy offscreen buffer to LCD and give time to other threads */
rb->lcd_update();
rb->yield();
/*/ Handle buttons */
button = pluginlib_getaction(rb, instant_update ? 0 : HZ/16,
plugin_contexts, NB_ACTION_CONTEXTS);
switch (button) {
case PICTUREFLOW_QUIT:
return PLUGIN_OK;
case PICTUREFLOW_MENU:
if ( pf_state == pf_idle || pf_state == pf_scrolling ) {
ret = main_menu();
if ( ret == -1 ) return PLUGIN_OK;
if ( ret != 0 ) return i;
rb->lcd_set_drawmode(DRMODE_FG);
}
else {
pf_state = pf_cover_out;
}
break;
case PICTUREFLOW_NEXT_ALBUM:
case PICTUREFLOW_NEXT_ALBUM_REPEAT:
#ifdef SCROLLWHEEL
if ( pf_state == pf_show_tracks )
select_next_track();
#endif
if ( pf_state == pf_idle || pf_state == pf_scrolling )
show_next_slide();
break;
case PICTUREFLOW_PREV_ALBUM:
case PICTUREFLOW_PREV_ALBUM_REPEAT:
#ifdef SCROLLWHEEL
if ( pf_state == pf_show_tracks )
select_prev_track();
#endif
if ( pf_state == pf_idle || pf_state == pf_scrolling )
show_previous_slide();
break;
#ifndef SCROLLWHEEL
case PICTUREFLOW_NEXT_TRACK:
case PICTUREFLOW_NEXT_TRACK_REPEAT:
if ( pf_state == pf_show_tracks )
select_next_track();
break;
case PICTUREFLOW_PREV_TRACK:
case PICTUREFLOW_PREV_TRACK_REPEAT:
if ( pf_state == pf_show_tracks )
select_prev_track();
break;
#endif
case PICTUREFLOW_SELECT_ALBUM:
if ( pf_state == pf_idle )
pf_state = pf_cover_in;
if ( pf_state == pf_show_tracks )
pf_state = pf_cover_out;
break;
default:
if (rb->default_event_handler_ex(button, cleanup, NULL)
== SYS_USB_CONNECTED)
return PLUGIN_USB_CONNECTED;
break;
}
}
}
/*************************** Plugin entry point ****************************/
enum plugin_status plugin_start(const struct plugin_api *api, const void *parameter)
{
int ret;
rb = api; /* copy to global api pointer */
(void) parameter;
#if LCD_DEPTH > 1
rb->lcd_set_backdrop(NULL);
#endif
/* Turn off backlight timeout */
backlight_force_on(rb); /* backlight control in lib/helper.c */
#ifdef HAVE_ADJUSTABLE_CPU_FREQ
rb->cpu_boost(true);
#endif
ret = main();
#ifdef HAVE_ADJUSTABLE_CPU_FREQ
rb->cpu_boost(false);
#endif
if ( ret == PLUGIN_OK ) {
if (!write_pfconfig()) {
rb->splash(HZ, "Error writing config.");
ret = PLUGIN_ERROR;
}
}
end_pf_thread();
cleanup(NULL);
return ret;
}
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