rendered paste body/**************************************************************************** __________ __ ___.* Open \______ \ ____ ____ | | _\_ |__ _______ ___* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \* \/ \/ \/ \/ \/* $Id: pictureflow.c 15941 2007-12-16 02:18:54Z nicolasp $** 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/** All files in this archive are subject to the GNU General Public License.* See the file COPYING in the source tree root for full license agreement.** 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 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_UP#define PICTUREFLOW_NEXT_ALBUM_REPEAT PLA_UP_REPEAT#define PICTUREFLOW_PREV_ALBUM PLA_DOWN#define PICTUREFLOW_PREV_ALBUM_REPEAT PLA_DOWN_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; int show_album_name; /* { album_name_hide = 0, album_name_bottom , album_name_top }; 0 = hide, 1 = top, 2 = bottom */};enum show_album_name { album_name_hide = 0, album_name_bottom , album_name_top };const int track_list_offset = ((LCD_HEIGHT > 100) ? 30 : 15); /* make the moving of the tracklist due to the album name moving more usable on small LCDs *//** 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; rb->tagcache_search_add_filter(&tcs, tag_album, album[slide_index].seek); track_count=0; int l, old_l = 0; tracks[0].name_idx = 0; while (rb->tagcache_get_next(&tcs) && track_count < MAX_TRACKS) { l = rb->strlen(tcs.result) + 1; if ( track_count > 0 ) tracks[track_count].name_idx = tracks[track_count-1].name_idx + old_l; if ( (tracks[track_count].name_idx + l) > MAX_TRACKS * AVG_TRACK_NAME_LENGTH ) { /* not enough memory */ ret = ERROR_BUFFER_FULL; break; } rb->strcpy(track_names + tracks[track_count].name_idx, tcs.result); tracks[track_count].seek = tcs.result_seek; old_l = l; track_count++; } rb->tagcache_search_finish(&tcs); track_index = slide_index; 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 )) );}#elsestatic 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(¢er_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;#ifdef HAVE_ADJUSTABLE_CPU_FREQ rb->cpu_boost(false);#endif /* 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 album name setting menu*/int album_name_menu(void) { void reset_track_list(void); int selection = config.show_album_name; MENUITEM_STRINGLIST(album_name_menu,"Show album title",NULL, "Hide album title", "Show at the bottom", "Show at the top"); rb->do_menu(&album_name_menu,&selection); config.show_album_name = selection; reset_track_list(); return GO_TO_PREVIOUS;}/** Shows the settings menu */int settings_menu(void) { int selection = 0; void reset_track_list(void); MENUITEM_STRINGLIST(settings_menu, "PictureFlow Settings", NULL, "Show FPS", "Spacing", "Center margin", "Number of slides", "Zoom", "Show album titles", "Rebuild cache"); do { selection=rb->do_menu(&settings_menu,&selection); switch(selection) { case 0: rb->set_bool("Show FPS", &show_fps); reset_track_list(); 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("Zoom", "", 1, &(config.zoom), NULL, 1, 10, 300, NULL ); recalc_table(); reset_slides(); break; case 5: album_name_menu(); recalc_table(); reset_slides(); break; case 6: 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)) { 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; config.show_album_name = album_name_bottom;}/** 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; switch (config.show_album_name) { case album_name_hide: /* hide */ track_list_visible_entries = fmin((LCD_HEIGHT-(show_fps ? track_list_offset : 0))/albumtxt_h, track_count); break; case album_name_bottom: /* bottom */ case album_name_top: /* top */ track_list_visible_entries = fmin((height-(show_fps ? track_list_offset : 0))/albumtxt_h, track_count); break; } 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; /* adjust track list a bit downwards whem album title is set to be shown at the top OR fps show fps is enabled */ titletxt_y = ((config.show_album_name == album_name_top || show_fps) ? track_list_offset : 0); 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 = ((config.show_album_name == album_name_bottom) ? (LCD_HEIGHT-albumtxt_h-10) : 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 fpstxt_w, fpstxt_h; int button;#ifdef HAVE_ADJUSTABLE_CPU_FREQ rb->cpu_boost(true);#endif 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; } rb->lcd_getstringsize(fpstxt, &fpstxt_w, &fpstxt_h); /* 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); /* move fps text to the bottom, when the album titles are set to be shown at the top */ rb->lcd_putsxy(0, (config.show_album_name == album_name_top ? (LCD_HEIGHT-fpstxt_h) : 0), fpstxt); } if (config.show_album_name) /* Don't draw when album names are hidden */ 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(struct plugin_api *api, 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 */ ret = main(); if ( ret == PLUGIN_OK ) { if (!write_pfconfig()) { rb->splash(HZ, "Error writing config."); return PLUGIN_ERROR; } } end_pf_thread(); cleanup(NULL); return ret;}