healthd_mode_charger.cpp revision 26f1dd764c357d024d3857295970f7e51cccaf25 
1/*
2 * Copyright (C) 2011-2013 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include <dirent.h>
18#include <errno.h>
19#include <fcntl.h>
20#include <inttypes.h>
21#include <linux/input.h>
22#include <stdbool.h>
23#include <stdio.h>
24#include <stdlib.h>
25#include <string.h>
26#include <sys/epoll.h>
27#include <sys/stat.h>
28#include <sys/types.h>
29#include <sys/un.h>
30#include <time.h>
31#include <unistd.h>
32
33#include <functional>
34
35#include <android-base/file.h>
36#include <android-base/macros.h>
37#include <android-base/stringprintf.h>
38
39#include <sys/socket.h>
40#include <linux/netlink.h>
41
42#include <batteryservice/BatteryService.h>
43#include <cutils/android_reboot.h>
44#include <cutils/klog.h>
45#include <cutils/misc.h>
46#include <cutils/uevent.h>
47#include <cutils/properties.h>
48#include <minui/minui.h>
49
50#ifdef CHARGER_ENABLE_SUSPEND
51#include <suspend/autosuspend.h>
52#endif
53
54#include "animation.h"
55#include "AnimationParser.h"
56
57#include <healthd/healthd.h>
58
59using namespace android;
60
61char *locale;
62
63#ifndef max
64#define max(a,b) ((a) > (b) ? (a) : (b))
65#endif
66
67#ifndef min
68#define min(a,b) ((a) < (b) ? (a) : (b))
69#endif
70
71#define ARRAY_SIZE(x)           (sizeof(x)/sizeof((x)[0]))
72
73#define MSEC_PER_SEC            (1000LL)
74#define NSEC_PER_MSEC           (1000000LL)
75
76#define BATTERY_UNKNOWN_TIME    (2 * MSEC_PER_SEC)
77#define POWER_ON_KEY_TIME       (2 * MSEC_PER_SEC)
78#define UNPLUGGED_SHUTDOWN_TIME (10 * MSEC_PER_SEC)
79
80#define LAST_KMSG_MAX_SZ        (32 * 1024)
81
82#define LOGE(x...) do { KLOG_ERROR("charger", x); } while (0)
83#define LOGW(x...) do { KLOG_WARNING("charger", x); } while (0)
84#define LOGV(x...) do { KLOG_DEBUG("charger", x); } while (0)
85
86static constexpr const char* animation_desc_path = "/res/values/charger/animation.txt";
87
88struct key_state {
89    bool pending;
90    bool down;
91    int64_t timestamp;
92};
93
94struct charger {
95    bool have_battery_state;
96    bool charger_connected;
97    int64_t next_screen_transition;
98    int64_t next_key_check;
99    int64_t next_pwr_check;
100
101    struct key_state keys[KEY_MAX + 1];
102
103    struct animation *batt_anim;
104    GRSurface* surf_unknown;
105    int boot_min_cap;
106};
107
108static const struct animation BASE_ANIMATION = {
109    .text_clock = {
110        .pos_x = 0,
111        .pos_y = 0,
112
113        .color_r = 255,
114        .color_g = 255,
115        .color_b = 255,
116        .color_a = 255,
117
118        .font = nullptr,
119    },
120    .text_percent = {
121        .pos_x = 0,
122        .pos_y = 0,
123
124        .color_r = 255,
125        .color_g = 255,
126        .color_b = 255,
127        .color_a = 255,
128    },
129
130    .run = false,
131
132    .frames = nullptr,
133    .cur_frame = 0,
134    .num_frames = 0,
135    .first_frame_repeats = 2,
136
137    .cur_cycle = 0,
138    .num_cycles = 3,
139
140    .cur_level = 0,
141    .cur_status = BATTERY_STATUS_UNKNOWN,
142};
143
144
145static struct animation::frame default_animation_frames[] = {
146    {
147        .disp_time = 750,
148        .min_level = 0,
149        .max_level = 19,
150        .surface = NULL,
151    },
152    {
153        .disp_time = 750,
154        .min_level = 0,
155        .max_level = 39,
156        .surface = NULL,
157    },
158    {
159        .disp_time = 750,
160        .min_level = 0,
161        .max_level = 59,
162        .surface = NULL,
163    },
164    {
165        .disp_time = 750,
166        .min_level = 0,
167        .max_level = 79,
168        .surface = NULL,
169    },
170    {
171        .disp_time = 750,
172        .min_level = 80,
173        .max_level = 95,
174        .surface = NULL,
175    },
176    {
177        .disp_time = 750,
178        .min_level = 0,
179        .max_level = 100,
180        .surface = NULL,
181    },
182};
183
184static struct animation battery_animation = BASE_ANIMATION;
185
186static struct charger charger_state;
187static struct healthd_config *healthd_config;
188static struct android::BatteryProperties *batt_prop;
189static int char_width;
190static int char_height;
191static bool minui_inited;
192
193/* current time in milliseconds */
194static int64_t curr_time_ms(void)
195{
196    struct timespec tm;
197    clock_gettime(CLOCK_MONOTONIC, &tm);
198    return tm.tv_sec * MSEC_PER_SEC + (tm.tv_nsec / NSEC_PER_MSEC);
199}
200
201static void clear_screen(void)
202{
203    gr_color(0, 0, 0, 255);
204    gr_clear();
205}
206
207#define MAX_KLOG_WRITE_BUF_SZ 256
208
209static void dump_last_kmsg(void)
210{
211    char *buf;
212    char *ptr;
213    unsigned sz = 0;
214    int len;
215
216    LOGW("\n");
217    LOGW("*************** LAST KMSG ***************\n");
218    LOGW("\n");
219    const char* kmsg[] = {
220        // clang-format off
221        "/sys/fs/pstore/console-ramoops-0",
222        "/sys/fs/pstore/console-ramoops",
223        "/proc/last_kmsg",
224        // clang-format on
225    };
226    for (size_t i = 0; i < arraysize(kmsg); ++i) {
227        buf = (char*)load_file(kmsg[i], &sz);
228        if (buf && sz) break;
229    }
230
231    if (!buf || !sz) {
232        LOGW("last_kmsg not found. Cold reset?\n");
233        goto out;
234    }
235
236    len = min(sz, LAST_KMSG_MAX_SZ);
237    ptr = buf + (sz - len);
238
239    while (len > 0) {
240        int cnt = min(len, MAX_KLOG_WRITE_BUF_SZ);
241        char yoink;
242        char *nl;
243
244        nl = (char *)memrchr(ptr, '\n', cnt - 1);
245        if (nl)
246            cnt = nl - ptr + 1;
247
248        yoink = ptr[cnt];
249        ptr[cnt] = '\0';
250        klog_write(6, "<4>%s", ptr);
251        ptr[cnt] = yoink;
252
253        len -= cnt;
254        ptr += cnt;
255    }
256
257    free(buf);
258
259out:
260    LOGW("\n");
261    LOGW("************* END LAST KMSG *************\n");
262    LOGW("\n");
263}
264
265#ifdef CHARGER_ENABLE_SUSPEND
266static int request_suspend(bool enable)
267{
268    if (enable)
269        return autosuspend_enable();
270    else
271        return autosuspend_disable();
272}
273#else
274static int request_suspend(bool /*enable*/)
275{
276    return 0;
277}
278#endif
279
280static int draw_text(const char *str, int x, int y)
281{
282    int str_len_px = gr_measure(gr_sys_font(), str);
283
284    if (x < 0)
285        x = (gr_fb_width() - str_len_px) / 2;
286    if (y < 0)
287        y = (gr_fb_height() - char_height) / 2;
288    gr_text(gr_sys_font(), x, y, str, 0);
289
290    return y + char_height;
291}
292
293static void android_green(void)
294{
295    gr_color(0xa4, 0xc6, 0x39, 255);
296}
297
298// Negative x or y coordinates position the text away from the opposite edge that positive ones do.
299void determine_xy(const animation::text_field& field, const int length, int* x, int* y)
300{
301    *x = field.pos_x;
302    *y = field.pos_y;
303
304    int str_len_px = length * field.font->char_width;
305    if (field.pos_x == CENTER_VAL) {
306        *x = (gr_fb_width() - str_len_px) / 2;
307    } else if (field.pos_x >= 0) {
308        *x = field.pos_x;
309    } else {  // position from max edge
310        *x = gr_fb_width() + field.pos_x - str_len_px;
311    }
312
313    if (field.pos_y == CENTER_VAL) {
314        *y = (gr_fb_height() - field.font->char_height) / 2;
315    } else if (field.pos_y >= 0) {
316        *y = field.pos_y;
317    } else {  // position from max edge
318        *y = gr_fb_height() + field.pos_y - field.font->char_height;
319    }
320}
321
322static void draw_clock(const animation& anim)
323{
324    static constexpr char CLOCK_FORMAT[] = "%H:%M";
325    static constexpr int CLOCK_LENGTH = 6;
326
327    const animation::text_field& field = anim.text_clock;
328
329    if (field.font == nullptr || field.font->char_width == 0 || field.font->char_height == 0) return;
330
331    time_t rawtime;
332    time(&rawtime);
333    struct tm* time_info = localtime(&rawtime);
334
335    char clock_str[CLOCK_LENGTH];
336    size_t length = strftime(clock_str, CLOCK_LENGTH, CLOCK_FORMAT, time_info);
337    if (length != CLOCK_LENGTH - 1) {
338        LOGE("Could not format time\n");
339        return;
340    }
341
342    int x, y;
343    determine_xy(field, length, &x, &y);
344
345    LOGV("drawing clock %s %d %d\n", clock_str, x, y);
346    gr_color(field.color_r, field.color_g, field.color_b, field.color_a);
347    gr_text(field.font, x, y, clock_str, false);
348}
349
350static void draw_percent(const animation& anim)
351{
352    int cur_level = anim.cur_level;
353    if (anim.cur_status == BATTERY_STATUS_FULL) {
354        cur_level = 100;
355    }
356
357    if (cur_level <= 0) return;
358
359    const animation::text_field& field = anim.text_percent;
360    if (field.font == nullptr || field.font->char_width == 0 || field.font->char_height == 0) {
361        return;
362    }
363
364    std::string str = base::StringPrintf("%d%%", cur_level);
365
366    int x, y;
367    determine_xy(field, str.size(), &x, &y);
368
369    LOGV("drawing percent %s %d %d\n", str.c_str(), x, y);
370    gr_color(field.color_r, field.color_g, field.color_b, field.color_a);
371    gr_text(field.font, x, y, str.c_str(), false);
372}
373
374/* returns the last y-offset of where the surface ends */
375static int draw_surface_centered(GRSurface* surface)
376{
377    int w;
378    int h;
379    int x;
380    int y;
381
382    w = gr_get_width(surface);
383    h = gr_get_height(surface);
384    x = (gr_fb_width() - w) / 2 ;
385    y = (gr_fb_height() - h) / 2 ;
386
387    LOGV("drawing surface %dx%d+%d+%d\n", w, h, x, y);
388    gr_blit(surface, 0, 0, w, h, x, y);
389    return y + h;
390}
391
392static void draw_unknown(struct charger *charger)
393{
394    int y;
395    if (charger->surf_unknown) {
396        draw_surface_centered(charger->surf_unknown);
397    } else {
398        android_green();
399        y = draw_text("Charging!", -1, -1);
400        draw_text("?\?/100", -1, y + 25);
401    }
402}
403
404static void draw_battery(const struct charger* charger)
405{
406    const struct animation& anim = *charger->batt_anim;
407    const struct animation::frame& frame = anim.frames[anim.cur_frame];
408
409    if (anim.num_frames != 0) {
410        draw_surface_centered(frame.surface);
411        LOGV("drawing frame #%d min_cap=%d time=%d\n",
412             anim.cur_frame, frame.min_level,
413             frame.disp_time);
414    }
415    draw_clock(anim);
416    draw_percent(anim);
417}
418
419static void redraw_screen(struct charger *charger)
420{
421    struct animation *batt_anim = charger->batt_anim;
422
423    clear_screen();
424
425    /* try to display *something* */
426    if (batt_anim->cur_level < 0 || batt_anim->num_frames == 0)
427        draw_unknown(charger);
428    else
429        draw_battery(charger);
430    gr_flip();
431}
432
433static void kick_animation(struct animation *anim)
434{
435    anim->run = true;
436}
437
438static void reset_animation(struct animation *anim)
439{
440    anim->cur_cycle = 0;
441    anim->cur_frame = 0;
442    anim->run = false;
443}
444
445static void init_status_display(struct animation* anim)
446{
447    int res;
448
449    if (!anim->text_clock.font_file.empty()) {
450        if ((res =
451                gr_init_font(anim->text_clock.font_file.c_str(), &anim->text_clock.font)) < 0) {
452            LOGE("Could not load time font (%d)\n", res);
453        }
454    }
455
456    if (!anim->text_percent.font_file.empty()) {
457        if ((res =
458                gr_init_font(anim->text_percent.font_file.c_str(), &anim->text_percent.font)) < 0) {
459            LOGE("Could not load percent font (%d)\n", res);
460        }
461    }
462}
463
464static void update_screen_state(struct charger *charger, int64_t now)
465{
466    struct animation *batt_anim = charger->batt_anim;
467    int disp_time;
468
469    if (!batt_anim->run || now < charger->next_screen_transition) return;
470
471    if (!minui_inited) {
472        if (healthd_config && healthd_config->screen_on) {
473            if (!healthd_config->screen_on(batt_prop)) {
474                LOGV("[%" PRId64 "] leave screen off\n", now);
475                batt_anim->run = false;
476                charger->next_screen_transition = -1;
477                if (charger->charger_connected)
478                    request_suspend(true);
479                return;
480            }
481        }
482
483        gr_init();
484        gr_font_size(gr_sys_font(), &char_width, &char_height);
485        init_status_display(batt_anim);
486
487#ifndef CHARGER_DISABLE_INIT_BLANK
488        gr_fb_blank(true);
489#endif
490        minui_inited = true;
491    }
492
493    /* animation is over, blank screen and leave */
494    if (batt_anim->num_cycles > 0 && batt_anim->cur_cycle == batt_anim->num_cycles) {
495        reset_animation(batt_anim);
496        charger->next_screen_transition = -1;
497        gr_fb_blank(true);
498        LOGV("[%" PRId64 "] animation done\n", now);
499        if (charger->charger_connected)
500            request_suspend(true);
501        return;
502    }
503
504    disp_time = batt_anim->frames[batt_anim->cur_frame].disp_time;
505
506    /* animation starting, set up the animation */
507    if (batt_anim->cur_frame == 0) {
508
509        LOGV("[%" PRId64 "] animation starting\n", now);
510        if (batt_prop) {
511            batt_anim->cur_level = batt_prop->batteryLevel;
512            batt_anim->cur_status = batt_prop->batteryStatus;
513            if (batt_prop->batteryLevel >= 0 && batt_anim->num_frames != 0) {
514                /* find first frame given current battery level */
515                for (int i = 0; i < batt_anim->num_frames; i++) {
516                    if (batt_anim->cur_level >= batt_anim->frames[i].min_level &&
517                        batt_anim->cur_level <= batt_anim->frames[i].max_level) {
518                        batt_anim->cur_frame = i;
519                        break;
520                    }
521                }
522
523                // repeat the first frame first_frame_repeats times
524                disp_time = batt_anim->frames[batt_anim->cur_frame].disp_time *
525                    batt_anim->first_frame_repeats;
526            }
527        }
528    }
529
530    /* unblank the screen  on first cycle */
531    if (batt_anim->cur_cycle == 0)
532        gr_fb_blank(false);
533
534    /* draw the new frame (@ cur_frame) */
535    redraw_screen(charger);
536
537    /* if we don't have anim frames, we only have one image, so just bump
538     * the cycle counter and exit
539     */
540    if (batt_anim->num_frames == 0 || batt_anim->cur_level < 0) {
541        LOGW("[%" PRId64 "] animation missing or unknown battery status\n", now);
542        charger->next_screen_transition = now + BATTERY_UNKNOWN_TIME;
543        batt_anim->cur_cycle++;
544        return;
545    }
546
547    /* schedule next screen transition */
548    charger->next_screen_transition = now + disp_time;
549
550    /* advance frame cntr to the next valid frame only if we are charging
551     * if necessary, advance cycle cntr, and reset frame cntr
552     */
553    if (charger->charger_connected) {
554        batt_anim->cur_frame++;
555
556        while (batt_anim->cur_frame < batt_anim->num_frames &&
557               (batt_anim->cur_level < batt_anim->frames[batt_anim->cur_frame].min_level ||
558                batt_anim->cur_level > batt_anim->frames[batt_anim->cur_frame].max_level)) {
559            batt_anim->cur_frame++;
560        }
561        if (batt_anim->cur_frame >= batt_anim->num_frames) {
562            batt_anim->cur_cycle++;
563            batt_anim->cur_frame = 0;
564
565            /* don't reset the cycle counter, since we use that as a signal
566             * in a test above to check if animation is over
567             */
568        }
569    } else {
570        /* Stop animating if we're not charging.
571         * If we stop it immediately instead of going through this loop, then
572         * the animation would stop somewhere in the middle.
573         */
574        batt_anim->cur_frame = 0;
575        batt_anim->cur_cycle++;
576    }
577}
578
579static int set_key_callback(struct charger *charger, int code, int value)
580{
581    int64_t now = curr_time_ms();
582    int down = !!value;
583
584    if (code > KEY_MAX)
585        return -1;
586
587    /* ignore events that don't modify our state */
588    if (charger->keys[code].down == down)
589        return 0;
590
591    /* only record the down even timestamp, as the amount
592     * of time the key spent not being pressed is not useful */
593    if (down)
594        charger->keys[code].timestamp = now;
595    charger->keys[code].down = down;
596    charger->keys[code].pending = true;
597    if (down) {
598        LOGV("[%" PRId64 "] key[%d] down\n", now, code);
599    } else {
600        int64_t duration = now - charger->keys[code].timestamp;
601        int64_t secs = duration / 1000;
602        int64_t msecs = duration - secs * 1000;
603        LOGV("[%" PRId64 "] key[%d] up (was down for %" PRId64 ".%" PRId64 "sec)\n",
604             now, code, secs, msecs);
605    }
606
607    return 0;
608}
609
610static void update_input_state(struct charger *charger,
611                               struct input_event *ev)
612{
613    if (ev->type != EV_KEY)
614        return;
615    set_key_callback(charger, ev->code, ev->value);
616}
617
618static void set_next_key_check(struct charger *charger,
619                               struct key_state *key,
620                               int64_t timeout)
621{
622    int64_t then = key->timestamp + timeout;
623
624    if (charger->next_key_check == -1 || then < charger->next_key_check)
625        charger->next_key_check = then;
626}
627
628static void process_key(struct charger *charger, int code, int64_t now)
629{
630    struct key_state *key = &charger->keys[code];
631
632    if (code == KEY_POWER) {
633        if (key->down) {
634            int64_t reboot_timeout = key->timestamp + POWER_ON_KEY_TIME;
635            if (now >= reboot_timeout) {
636                /* We do not currently support booting from charger mode on
637                   all devices. Check the property and continue booting or reboot
638                   accordingly. */
639                if (property_get_bool("ro.enable_boot_charger_mode", false)) {
640                    LOGW("[%" PRId64 "] booting from charger mode\n", now);
641                    property_set("sys.boot_from_charger_mode", "1");
642                } else {
643                    if (charger->batt_anim->cur_level >= charger->boot_min_cap) {
644                        LOGW("[%" PRId64 "] rebooting\n", now);
645                        android_reboot(ANDROID_RB_RESTART, 0, 0);
646                    } else {
647                        LOGV("[%" PRId64 "] ignore power-button press, battery level "
648                            "less than minimum\n", now);
649                    }
650                }
651            } else {
652                /* if the key is pressed but timeout hasn't expired,
653                 * make sure we wake up at the right-ish time to check
654                 */
655                set_next_key_check(charger, key, POWER_ON_KEY_TIME);
656
657               /* Turn on the display and kick animation on power-key press
658                * rather than on key release
659                */
660                kick_animation(charger->batt_anim);
661                request_suspend(false);
662            }
663        } else {
664            /* if the power key got released, force screen state cycle */
665            if (key->pending) {
666                kick_animation(charger->batt_anim);
667            }
668        }
669    }
670
671    key->pending = false;
672}
673
674static void handle_input_state(struct charger *charger, int64_t now)
675{
676    process_key(charger, KEY_POWER, now);
677
678    if (charger->next_key_check != -1 && now > charger->next_key_check)
679        charger->next_key_check = -1;
680}
681
682static void handle_power_supply_state(struct charger *charger, int64_t now)
683{
684    if (!charger->have_battery_state)
685        return;
686
687    if (!charger->charger_connected) {
688
689        /* Last cycle would have stopped at the extreme top of battery-icon
690         * Need to show the correct level corresponding to capacity.
691         */
692        kick_animation(charger->batt_anim);
693        request_suspend(false);
694        if (charger->next_pwr_check == -1) {
695            charger->next_pwr_check = now + UNPLUGGED_SHUTDOWN_TIME;
696            LOGW("[%" PRId64 "] device unplugged: shutting down in %" PRId64 " (@ %" PRId64 ")\n",
697                 now, (int64_t)UNPLUGGED_SHUTDOWN_TIME, charger->next_pwr_check);
698        } else if (now >= charger->next_pwr_check) {
699            LOGW("[%" PRId64 "] shutting down\n", now);
700            android_reboot(ANDROID_RB_POWEROFF, 0, 0);
701        } else {
702            /* otherwise we already have a shutdown timer scheduled */
703        }
704    } else {
705        /* online supply present, reset shutdown timer if set */
706        if (charger->next_pwr_check != -1) {
707            LOGW("[%" PRId64 "] device plugged in: shutdown cancelled\n", now);
708            kick_animation(charger->batt_anim);
709        }
710        charger->next_pwr_check = -1;
711    }
712}
713
714void healthd_mode_charger_heartbeat()
715{
716    struct charger *charger = &charger_state;
717    int64_t now = curr_time_ms();
718
719    handle_input_state(charger, now);
720    handle_power_supply_state(charger, now);
721
722    /* do screen update last in case any of the above want to start
723     * screen transitions (animations, etc)
724     */
725    update_screen_state(charger, now);
726}
727
728void healthd_mode_charger_battery_update(
729    struct android::BatteryProperties *props)
730{
731    struct charger *charger = &charger_state;
732
733    charger->charger_connected =
734        props->chargerAcOnline || props->chargerUsbOnline ||
735        props->chargerWirelessOnline;
736
737    if (!charger->have_battery_state) {
738        charger->have_battery_state = true;
739        charger->next_screen_transition = curr_time_ms() - 1;
740        reset_animation(charger->batt_anim);
741        kick_animation(charger->batt_anim);
742    }
743    batt_prop = props;
744}
745
746int healthd_mode_charger_preparetowait(void)
747{
748    struct charger *charger = &charger_state;
749    int64_t now = curr_time_ms();
750    int64_t next_event = INT64_MAX;
751    int64_t timeout;
752
753    LOGV("[%" PRId64 "] next screen: %" PRId64 " next key: %" PRId64 " next pwr: %" PRId64 "\n", now,
754         charger->next_screen_transition, charger->next_key_check,
755         charger->next_pwr_check);
756
757    if (charger->next_screen_transition != -1)
758        next_event = charger->next_screen_transition;
759    if (charger->next_key_check != -1 && charger->next_key_check < next_event)
760        next_event = charger->next_key_check;
761    if (charger->next_pwr_check != -1 && charger->next_pwr_check < next_event)
762        next_event = charger->next_pwr_check;
763
764    if (next_event != -1 && next_event != INT64_MAX)
765        timeout = max(0, next_event - now);
766    else
767        timeout = -1;
768
769   return (int)timeout;
770}
771
772static int input_callback(struct charger *charger, int fd, unsigned int epevents)
773{
774    struct input_event ev;
775    int ret;
776
777    ret = ev_get_input(fd, epevents, &ev);
778    if (ret)
779        return -1;
780    update_input_state(charger, &ev);
781    return 0;
782}
783
784static void charger_event_handler(uint32_t /*epevents*/)
785{
786    int ret;
787
788    ret = ev_wait(-1);
789    if (!ret)
790        ev_dispatch();
791}
792
793animation* init_animation()
794{
795    bool parse_success;
796
797    std::string content;
798    if (base::ReadFileToString(animation_desc_path, &content)) {
799        parse_success = parse_animation_desc(content, &battery_animation);
800    } else {
801        LOGW("Could not open animation description at %s\n", animation_desc_path);
802        parse_success = false;
803    }
804
805    if (!parse_success) {
806        LOGW("Could not parse animation description. Using default animation.\n");
807        battery_animation = BASE_ANIMATION;
808        battery_animation.animation_file.assign("charger/battery_scale");
809        battery_animation.frames = default_animation_frames;
810        battery_animation.num_frames = ARRAY_SIZE(default_animation_frames);
811    }
812    if (battery_animation.fail_file.empty()) {
813        battery_animation.fail_file.assign("charger/battery_fail");
814    }
815
816    LOGV("Animation Description:\n");
817    LOGV("  animation: %d %d '%s' (%d)\n",
818        battery_animation.num_cycles, battery_animation.first_frame_repeats,
819        battery_animation.animation_file.c_str(), battery_animation.num_frames);
820    LOGV("  fail_file: '%s'\n", battery_animation.fail_file.c_str());
821    LOGV("  clock: %d %d %d %d %d %d '%s'\n",
822        battery_animation.text_clock.pos_x, battery_animation.text_clock.pos_y,
823        battery_animation.text_clock.color_r, battery_animation.text_clock.color_g,
824        battery_animation.text_clock.color_b, battery_animation.text_clock.color_a,
825        battery_animation.text_clock.font_file.c_str());
826    LOGV("  percent: %d %d %d %d %d %d '%s'\n",
827        battery_animation.text_percent.pos_x, battery_animation.text_percent.pos_y,
828        battery_animation.text_percent.color_r, battery_animation.text_percent.color_g,
829        battery_animation.text_percent.color_b, battery_animation.text_percent.color_a,
830        battery_animation.text_percent.font_file.c_str());
831    for (int i = 0; i < battery_animation.num_frames; i++) {
832        LOGV("  frame %.2d: %d %d %d\n", i, battery_animation.frames[i].disp_time,
833            battery_animation.frames[i].min_level, battery_animation.frames[i].max_level);
834    }
835
836    return &battery_animation;
837}
838
839void healthd_mode_charger_init(struct healthd_config* config)
840{
841    int ret;
842    struct charger *charger = &charger_state;
843    int i;
844    int epollfd;
845
846    dump_last_kmsg();
847
848    LOGW("--------------- STARTING CHARGER MODE ---------------\n");
849
850    ret = ev_init(std::bind(&input_callback, charger, std::placeholders::_1,
851                            std::placeholders::_2));
852    if (!ret) {
853        epollfd = ev_get_epollfd();
854        healthd_register_event(epollfd, charger_event_handler, EVENT_WAKEUP_FD);
855    }
856
857    struct animation* anim = init_animation();
858    charger->batt_anim = anim;
859
860    ret = res_create_display_surface(anim->fail_file.c_str(), &charger->surf_unknown);
861    if (ret < 0) {
862        LOGE("Cannot load custom battery_fail image. Reverting to built in.\n");
863        ret = res_create_display_surface("charger/battery_fail", &charger->surf_unknown);
864        if (ret < 0) {
865            LOGE("Cannot load built in battery_fail image\n");
866            charger->surf_unknown = NULL;
867        }
868    }
869
870    GRSurface** scale_frames;
871    int scale_count;
872    int scale_fps;  // Not in use (charger/battery_scale doesn't have FPS text
873                    // chunk). We are using hard-coded frame.disp_time instead.
874    ret = res_create_multi_display_surface(anim->animation_file.c_str(),
875        &scale_count, &scale_fps, &scale_frames);
876    if (ret < 0) {
877        LOGE("Cannot load battery_scale image\n");
878        anim->num_frames = 0;
879        anim->num_cycles = 1;
880    } else if (scale_count != anim->num_frames) {
881        LOGE("battery_scale image has unexpected frame count (%d, expected %d)\n",
882             scale_count, anim->num_frames);
883        anim->num_frames = 0;
884        anim->num_cycles = 1;
885    } else {
886        for (i = 0; i < anim->num_frames; i++) {
887            anim->frames[i].surface = scale_frames[i];
888        }
889    }
890    ev_sync_key_state(std::bind(&set_key_callback, charger, std::placeholders::_1,
891                                std::placeholders::_2));
892
893    charger->next_screen_transition = -1;
894    charger->next_key_check = -1;
895    charger->next_pwr_check = -1;
896    healthd_config = config;
897    charger->boot_min_cap = config->boot_min_cap;
898}
899