summaryrefslogtreecommitdiffstats
path: root/apps/radio/radioart.c
blob: 87d37cd52cbceee26babaada31fff4ea8a59f424 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
/***************************************************************************
 *             __________               __   ___.
 *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
 *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
 *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
 *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
 *                     \/            \/     \/    \/            \/
 * $Id$
 *
 * Copyright (C) 2010 Jonathan Gordon
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
 * KIND, either express or implied.
 *
 ****************************************************************************/

#include "config.h"
#include <stdio.h>
#include <stdbool.h>
#include <stdlib.h>
#include "system.h"
#include "settings.h"
#include "radio.h"
#include "buffering.h"
#include "playback.h" /* bufopen_user_data */
#include "file.h"
#include "kernel.h"
#include "string-extra.h"
#include "pathfuncs.h"
#include "core_alloc.h"

#define MAX_RADIOART_IMAGES 10
struct radioart {
    int handle;
    long last_tick;
    struct dim dim;
    char name[MAX_FMPRESET_LEN+1];
};

static char* buf;
static struct radioart radioart[MAX_RADIOART_IMAGES];

static int find_oldest_image_index(void)
{
    unsigned i;
    long oldest_tick = current_tick;
    int oldest_idx = -1;
    for(i = 0; i < ARRAYLEN(radioart); i++)
    {
        struct radioart *ra = &radioart[i];
        /* last_tick is only valid if it's actually loaded, i.e. valid handle */
        if (ra->handle >= 0 && TIME_BEFORE(ra->last_tick, oldest_tick))
        {
            oldest_tick = ra->last_tick;
            oldest_idx = i;
        }
    }
    return oldest_idx;
}

static int load_radioart_image(struct radioart *ra, const char* preset_name, 
                               struct dim *dim)
{
    char path[MAX_PATH];
    struct bufopen_bitmap_data user_data;
#ifndef HAVE_NOISY_IDLE_MODE
    cpu_idle_mode(false);
#endif
    snprintf(path, sizeof(path), FMPRESET_PATH "/%s.bmp",preset_name);
    if (!file_exists(path))
        snprintf(path, sizeof(path), FMPRESET_PATH "/%s.jpg",preset_name);
    if (!file_exists(path))
    {
#ifndef HAVE_NOISY_IDLE_MODE
        cpu_idle_mode(true);
#endif
        return -1;
    }
    strlcpy(ra->name, preset_name, MAX_FMPRESET_LEN+1);
    ra->dim.height = dim->height;
    ra->dim.width = dim->width;
    ra->last_tick = current_tick;
    user_data.embedded_albumart = NULL;
    user_data.dim = &ra->dim;
    ra->handle = bufopen(path, 0, TYPE_BITMAP, &user_data);
    if (ra->handle == ERR_BUFFER_FULL || ra->handle == ERR_BITMAP_TOO_LARGE)
    {
        int i = find_oldest_image_index();
        if (i != -1)
        {
            bufclose(radioart[i].handle);
            ra->handle = bufopen(path, 0, TYPE_BITMAP, &user_data);
        }
    }
#ifndef HAVE_NOISY_IDLE_MODE
    cpu_idle_mode(true);
#endif
    return ra->handle;    
}
int radio_get_art_hid(struct dim *requested_dim)
{
    int preset = radio_current_preset();
    int free_idx = -1;
    const char* preset_name;

    if (!buf || radio_scan_mode() || preset < 0)
        return -1;

    preset_name = radio_get_preset_name(preset);
    for (int i=0; i<MAX_RADIOART_IMAGES; i++)
    {
        if (radioart[i].handle < 0)
        {
            free_idx = i;
        }
        else if (!strcmp(radioart[i].name, preset_name) &&
                 radioart[i].dim.width == requested_dim->width &&
                 radioart[i].dim.height == requested_dim->height)
        {
            radioart[i].last_tick = current_tick;
            return radioart[i].handle;
        }
    }
    if (free_idx >= 0)
    {
        return load_radioart_image(&radioart[free_idx], 
                                   preset_name, requested_dim);
    }
    else
    {
        int i = find_oldest_image_index();
        if (i != -1)
        {
            bufclose(radioart[i].handle);
            return load_radioart_image(&radioart[i],
                                       preset_name, requested_dim);
        }
    }
        
    return -1;
}

static void buffer_reset_handler(unsigned short id, void *data, void *user_data)
{
    buf = NULL;
    for(int i=0;i<MAX_RADIOART_IMAGES;i++)
    {
        if (radioart[i].handle >= 0)
            bufclose(radioart[i].handle);
        radioart[i].handle = -1;
        radioart[i].name[0] = '\0';
    }

    (void)id;
    (void)data;
    (void)user_data;
}

static int shrink_callback(int handle, unsigned hints, void* start, size_t old_size)
{
    (void)start;
    (void)old_size;

    ssize_t old_size_s = old_size;
    size_t size_hint = (hints & BUFLIB_SHRINK_SIZE_MASK);
    ssize_t wanted_size = old_size_s - size_hint;

    if (wanted_size <= 0)
    {
        core_free(handle);
        buffering_reset(NULL, 0);
    }
    else
    {
        if (hints & BUFLIB_SHRINK_POS_FRONT)
            start += size_hint;

        buffering_reset(start, wanted_size);
        core_shrink(handle, start, wanted_size);
        buf = start;

        /* one-shot */
        add_event_ex(BUFFER_EVENT_BUFFER_RESET, true, buffer_reset_handler, NULL);
    }

    return BUFLIB_CB_OK;
}

static struct buflib_callbacks radioart_ops = {
    .shrink_callback = shrink_callback,
};

void radioart_init(bool entering_screen)
{
    if (entering_screen)
    {
        /* grab control over buffering */
        size_t bufsize;
        int handle = core_alloc_maximum("radioart", &bufsize, &radioart_ops);
        buffering_reset(core_get_data(handle), bufsize);
        buf = core_get_data(handle);
        /* one-shot */
        add_event_ex(BUFFER_EVENT_BUFFER_RESET, true, buffer_reset_handler, NULL);
    }
    else /* init at startup */
    {
        for(int i=0;i<MAX_RADIOART_IMAGES;i++)
        {
            radioart[i].handle = -1;
            radioart[i].name[0] = '\0';
        }
    }
}