/*************************************************************************** * __________ __ ___. * 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/ * * 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 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 #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 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; }; 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 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; }; /** 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 bool animation_is_active; /* an animation is currently running */ 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 int zoom; 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 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 bool thread_is_running; PFreal sinTable[] = { /* 10 */ 3, 9, 15, 21, 28, 34, 40, 47, 53, 59, 65, 72, 78, 84, 90, 97, 103, 109, 115, 122, 128, 134, 140, 147, 153, 159, 165, 171, 178, 184, 190, 196, 202, 209, 215, 221, 227, 233, 239, 245, 251, 257, 264, 270, 276, 282, 288, 294, 300, 306, 312, 318, 324, 330, 336, 342, 347, 353, 359, 365, 371, 377, 383, 388, 394, 400, 406, 412, 417, 423, 429, 434, 440, 446, 451, 457, 463, 468, 474, 479, 485, 491, 496, 501, 507, 512, 518, 523, 529, 534, 539, 545, 550, 555, 561, 566, 571, 576, 581, 587, 592, 597, 602, 607, 612, 617, 622, 627, 632, 637, 642, 647, 652, 656, 661, 666, 671, 675, 680, 685, 690, 694, 699, 703, 708, 712, 717, 721, 726, 730, 735, 739, 743, 748, 752, 756, 760, 765, 769, 773, 777, 781, 785, 789, 793, 797, 801, 805, 809, 813, 816, 820, 824, 828, 831, 835, 839, 842, 846, 849, 853, 856, 860, 863, 866, 870, 873, 876, 879, 883, 886, 889, 892, 895, 898, 901, 904, 907, 910, 913, 916, 918, 921, 924, 927, 929, 932, 934, 937, 939, 942, 944, 947, 949, 951, 954, 956, 958, 960, 963, 965, 967, 969, 971, 973, 975, 977, 978, 980, 982, 984, 986, 987, 989, 990, 992, 994, 995, 997, 998, 999, 1001, 1002, 1003, 1004, 1006, 1007, 1008, 1009, 1010, 1011, 1012, 1013, 1014, 1015, 1015, 1016, 1017, 1018, 1018, 1019, 1019, 1020, 1020, 1021, 1021, 1022, 1022, 1022, 1023, 1023, 1023, 1023, 1023, 1023, 1023, 1023, 1023, 1023, 1023, 1023, 1023, 1023, 1022, 1022, 1022, 1021, 1021, 1020, 1020, 1019, 1019, 1018, 1018, 1017, 1016, 1015, 1015, 1014, 1013, 1012, 1011, 1010, 1009, 1008, 1007, 1006, 1004, 1003, 1002, 1001, 999, 998, 997, 995, 994, 992, 990, 989, 987, 986, 984, 982, 980, 978, 977, 975, 973, 971, 969, 967, 965, 963, 960, 958, 956, 954, 951, 949, 947, 944, 942, 939, 937, 934, 932, 929, 927, 924, 921, 918, 916, 913, 910, 907, 904, 901, 898, 895, 892, 889, 886, 883, 879, 876, 873, 870, 866, 863, 860, 856, 853, 849, 846, 842, 839, 835, 831, 828, 824, 820, 816, 813, 809, 805, 801, 797, 793, 789, 785, 781, 777, 773, 769, 765, 760, 756, 752, 748, 743, 739, 735, 730, 726, 721, 717, 712, 708, 703, 699, 694, 690, 685, 680, 675, 671, 666, 661, 656, 652, 647, 642, 637, 632, 627, 622, 617, 612, 607, 602, 597, 592, 587, 581, 576, 571, 566, 561, 555, 550, 545, 539, 534, 529, 523, 518, 512, 507, 501, 496, 491, 485, 479, 474, 468, 463, 457, 451, 446, 440, 434, 429, 423, 417, 412, 406, 400, 394, 388, 383, 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-1015, -1014, -1013, -1012, -1011, -1010, -1009, -1008, -1007, -1005, -1004, -1003, -1002, -1000, -999, -998, -996, -995, -993, -991, -990, -988, -987, -985, -983, -981, -979, -978, -976, -974, -972, -970, -968, -966, -964, -961, -959, -957, -955, -952, -950, -948, -945, -943, -940, -938, -935, -933, -930, -928, -925, -922, -919, -917, -914, -911, -908, -905, -902, -899, -896, -893, -890, -887, -884, -880, -877, -874, -871, -867, -864, -861, -857, -854, -850, -847, -843, -840, -836, -832, -829, -825, -821, -817, -814, -810, -806, -802, -798, -794, -790, -786, -782, -778, -774, -770, -766, -761, -757, -753, -749, -744, -740, -736, -731, -727, -722, -718, -713, -709, -704, -700, -695, -691, -686, -681, -676, -672, -667, -662, -657, -653, -648, -643, -638, -633, -628, -623, -618, -613, -608, -603, -598, -593, -588, -582, -577, -572, -567, -562, -556, -551, -546, -540, -535, -530, -524, -519, -513, -508, -502, -497, -492, -486, -480, -475, -469, -464, -458, -452, -447, -441, -435, -430, -424, -418, -413, -407, -401, -395, -389, -384, -378, -372, -366, -360, -354, -348, -343, -337, -331, -325, -319, -313, -307, -301, -295, -289, -283, -277, -271, -265, -258, -252, -246, -240, -234, -228, -222, -216, -210, -203, -197, -191, -185, -179, -172, -166, -160, -154, -148, -141, -135, -129, -123, -116, -110, -104, -98, -91, -85, -79, -73, -66, -60, -54, -48, -41, -35, -29, -22, -16, -10, -4, }; /** code */ bool create_bmp(struct bitmap* input_bmp, char *target_path, bool resize); int load_surface(int); /* 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 fmul(PFreal a, PFreal b) { return ((long long) (a)) * ((long long) (b)) >> PFREAL_SHIFT; } 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 inline PFreal fsin(int iangle) { while (iangle < 0) iangle += IANGLE_MAX; return sinTable[iangle & IANGLE_MASK]; } inline PFreal fcos(int iangle) { /* quarter phase shift */ 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(int slide_index) { return album_names + album[slide_index].name_idx; } /** 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(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(); } 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; } 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; 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, "couldn't 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, "couldn't write bmp"); } config.avg_album_width += input_bmp.width; slides++; if ( rb->button_get(false) == PICTUREFLOW_MENU ) 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. */ int slide_stack_get_index(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(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 */ 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. */ void request_surface(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 it's 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 and swap buffers */ output_bmp.width = config.avg_album_width; output_bmp.height = config.avg_album_width; simple_resize_bitmap(input_bmp, &output_bmp); input_bmp->data = output_bmp.data; input_bmp->width = output_bmp.width; input_bmp->height = output_bmp.height; output_bmp.data = (char *)input_bmp_buffer; output_bmp.width = input_bmp->width * 2; output_bmp.height = input_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 bool load_and_prepare_surface(int slide_index, 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(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 */ struct bitmap *get_slide(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 */ struct bitmap *surface(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.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; } 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; } } /** 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; } /** Render a single slide */ void render_slide(struct slide_data *slide, struct rect *result_rect, 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; int sw = bmp->height; int sh = bmp->width; int h = LCD_HEIGHT; 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 * 100 / zoom; 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; 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); int column = sw / 2 + (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 / 2; int y2 = y1 + 1; fb_data *pixel1 = &buffer[y1 * BUFFER_WIDTH + x]; fb_data *pixel2 = &buffer[y2 * BUFFER_WIDTH + x]; int pixelstep = pixel2 - pixel1; int center = (sh / 2); 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)) { fb_data c1 = ptr[p1 >> PFREAL_SHIFT]; fb_data c2 = ptr[p2 >> PFREAL_SHIFT]; int r1 = RGB_UNPACK_RED(c1) * alpha / 256; int g1 = RGB_UNPACK_GREEN(c1) * alpha / 256; int b1 = RGB_UNPACK_BLUE(c1) * alpha / 256; int r2 = RGB_UNPACK_RED(c2) * alpha / 256; int g2 = RGB_UNPACK_GREEN(c2) * alpha / 256; int b2 = RGB_UNPACK_BLUE(c2) * alpha / 256; *pixel1 = LCD_RGBPACK(r1, g1, b1); *pixel2 = LCD_RGBPACK(r2, g2, b2); 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(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) { if (!animation_is_active) { step = (target < center_slide.slide_index) ? -1 : 1; animation_is_active = true; } } /** Go to the previous slide */ void show_previous_slide(void) { if (step >= 0) { if (center_index > 0) { target = center_index - 1; 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 { target = fmin(center_index + 2, number_of_slides - 1); } } /** Return true if the rect has size 0 */ 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(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; 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; 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; 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_animation(void) { if (!animation_is_active) return; 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(); animation_is_active = false; 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); } 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", "Rebuild cache"); do { selection=rb->do_menu(&settings_menu,&selection); 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->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; } } } bool read_pfconfig(void) { /* defaults */ config.spacing_between_slides = 40; config.extra_spacing_for_center_slide = 0; config.show_slides = 3; 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); return ( ret == sizeof(struct config_data) ); } 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; } /** 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"); 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; animation_is_active = false; zoom = 100; center_index = 0; slide_frame = 0; step = 0; target = 0; fade = 256; show_fps = false; recalc_table(); reset_slides(); char fpstxt[10]; char *albumtxt; 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; int albumtxt_w, albumtxt_h; int albumtxt_x = 0, albumtxt_y = 0; int albumtxt_dir = -1; int c; int prev_center_index = -1; while (true) { current_update = *rb->current_tick; frames++; update_animation(); render(); if (current_update - last_update > update_interval) { fps = frames * HZ / (current_update - last_update); last_update = current_update; frames = 0; } 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); } albumtxt = get_album_name(center_index); if ( animation_is_active ) { c = ((slide_frame & 0xffff )/ 256); if (step > 0) c = 255-c; } else c= 255; 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; albumtxt_y = LCD_HEIGHT-albumtxt_h-10; prev_center_index = center_index; } if (albumtxt_w > LCD_WIDTH && ! animation_is_active ) { rb->lcd_putsxy(albumtxt_x, albumtxt_y , albumtxt); 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); } rb->lcd_update(); rb->yield(); button = pluginlib_getaction(rb, animation_is_active ? 0 : HZ/16, plugin_contexts, NB_ACTION_CONTEXTS); switch (button) { case PICTUREFLOW_QUIT: return PLUGIN_OK; case PICTUREFLOW_MENU: ret = main_menu(); if ( ret == -1 ) return PLUGIN_OK; if ( ret != 0 ) return i; break; case PICTUREFLOW_NEXT_ALBUM: case PICTUREFLOW_NEXT_ALBUM_REPEAT: show_next_slide(); break; case PICTUREFLOW_PREV_ALBUM: case PICTUREFLOW_PREV_ALBUM_REPEAT: show_previous_slide(); 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; }