apps/recorder/albumart.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2007 Nicolas Pennequin
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21
  22 #include <string.h>
  23 #include "sprintf.h"
  24 #include "system.h"
  25 #include "albumart.h"
  26 #include "metadata.h"
  27 #include "gwps.h"
  28 #include "buffering.h"
  29 #include "dircache.h"
  30 #include "debug.h"
  31 #include "misc.h"
  32 #include "settings.h"
  33
  34
  35 /* Strip filename from a full path
  36  *
  37  * buf      - buffer to extract directory to.
  38  * buf_size - size of buffer.
  39  * fullpath - fullpath to extract from.
  40  *
  41  * Split the directory part of the given fullpath and store it in buf
  42  *   (including last '/').
  43  * The function return parameter is a pointer to the filename
  44  *   inside the given fullpath.
  45  */
  46 static char* strip_filename(char* buf, int buf_size, const char* fullpath)
  47 {
  48     char* sep;
  49     int   len;
  50
  51     if (!buf || buf_size <= 0 || !fullpath)
  52         return NULL;
  53
  54     /* if 'fullpath' is only a filename return immediately */
  55     sep = strrchr(fullpath, '/');
  56     if (sep == NULL)
  57     {
  58         buf[0] = 0;
  59         return (char*)fullpath;
  60     }
  61
  62     len = MIN(sep - fullpath + 1, buf_size - 1);
  63     strncpy(buf, fullpath, len);
  64     buf[len] = 0;
  65     return (sep + 1);
  66 }
  67
  68 /* Make sure part of path only contain chars valid for a FAT32 long name.
  69  * Double quotes are replaced with single quotes, other unsupported chars
  70  * are replaced with an underscore.
  71  *
  72  * path   - path to modify.
  73  * offset - where in path to start checking.
  74  * count  - number of chars to check.
  75  */
  76 static void fix_path_part(char* path, int offset, int count)
  77 {
  78     static const char invalid_chars[] = "*/:<>?\\|";
  79     int i;
  80
  81     path += offset;
  82
  83     for (i = 0; i <= count; i++, path++)
  84     {
  85         if (*path == 0)
  86             return;
  87         if (*path == '"')
  88             *path = '\'';
  89         else if (strchr(invalid_chars, *path))
  90             *path = '_';
  91     }
  92 }
  93
  94 /* Look for the first matching album art bitmap in the following list:
  95  *  ./<trackname><size>.bmp
  96  *  ./<albumname><size>.bmp
  97  *  ./cover<size>.bmp
  98  *  ../<albumname><size>.bmp
  99  *  ../cover<size>.bmp
 100  *  ROCKBOX_DIR/albumart/<artist>-<albumname><size>.bmp
 101  * <size> is the value of the size_string parameter, <trackname> and
 102  * <albumname> are read from the ID3 metadata.
 103  * If a matching bitmap is found, its filename is stored in buf.
 104  * Return value is true if a bitmap was found, false otherwise.
 105  */
 106 bool search_albumart_files(const struct mp3entry *id3, const char *size_string,
 107                            char *buf, int buflen)
 108 {
 109     char path[MAX_PATH + 1];
 110     char dir[MAX_PATH + 1];
 111     bool found = false;
 112     const char *trackname;
 113     const char *artist;
 114     int dirlen;
 115     int albumlen;
 116
 117     if (!id3 || !buf)
 118         return false;
 119
 120     trackname = id3->path;
 121
 122     if (strcmp(trackname, "No file!") == 0)
 123         return false;
 124
 125     strip_filename(dir, sizeof(dir), trackname);
 126     dirlen = strlen(dir);
 127     albumlen = id3->album ? strlen(id3->album) : 0;
 128
 129     /* the first file we look for is one specific to the track playing */
 130     strip_extension(path, sizeof(path) - strlen(size_string) - 4, trackname);
 131     strcat(path, size_string);
 132     strcat(path, ".bmp");
 133     found = file_exists(path);
 134     if (!found && albumlen > 0)
 135     {
 136         /* if it doesn't exist,
 137          * we look for a file specific to the track's album name */
 138         snprintf(path, sizeof(path),
 139                  "%s%s%s.bmp", dir, id3->album, size_string);
 140         fix_path_part(path, dirlen, albumlen);
 141         found = file_exists(path);
 142     }
 143
 144     if (!found)
 145     {
 146         /* if it still doesn't exist, we look for a generic file */
 147         snprintf(path, sizeof(path),
 148                  "%scover%s.bmp", dir, size_string);
 149         found = file_exists(path);
 150     }
 151
 152     artist = id3->albumartist != NULL ? id3->albumartist : id3->artist;
 153
 154     if (!found && artist && id3->album)
 155     {
 156         /* look in the albumart subdir of .rockbox */
 157         snprintf(path, sizeof(path),
 158                 ROCKBOX_DIR "/albumart/%s-%s%s.bmp",
 159                 artist,
 160                 id3->album,
 161                 size_string);
 162         fix_path_part(path, strlen(ROCKBOX_DIR "/albumart/"), MAX_PATH);
 163         found = file_exists(path);
 164     }
 165
 166     if (!found)
 167     {
 168         /* if it still doesn't exist,
 169          * we continue to search in the parent directory */
 170         strcpy(path, dir);
 171         path[dirlen - 1] = 0;
 172         strip_filename(dir, sizeof(dir), path);
 173         dirlen = strlen(dir);
 174     }
 175
 176     /* only try parent if there is one */
 177     if (dirlen > 0)
 178     {
 179         if (!found && albumlen > 0)
 180         {
 181             /* we look in the parent directory
 182              * for a file specific to the track's album name */
 183             snprintf(path, sizeof(path),
 184                      "%s%s%s.bmp", dir, id3->album, size_string);
 185             fix_path_part(path, dirlen, albumlen);
 186             found = file_exists(path);
 187         }
 188
 189         if (!found)
 190         {
 191             /* if it still doesn't exist, we look in the parent directory
 192              * for a generic file */
 193             snprintf(path, sizeof(path),
 194                      "%scover%s.bmp", dir, size_string);
 195             found = file_exists(path);
 196         }
 197     }
 198
 199     if (!found)
 200         return false;
 201
 202     strncpy(buf, path, buflen);
 203     DEBUGF("Album art found: %s\n", path);
 204     return true;
 205 }
 206
 207 /* Look for albumart bitmap in the same dir as the track and in its parent dir.
 208  * Stores the found filename in the buf parameter.
 209  * Returns true if a bitmap was found, false otherwise */
 210 bool find_albumart(const struct mp3entry *id3, char *buf, int buflen)
 211 {
 212     if (!id3 || !buf)
 213         return false;
 214
 215     char size_string[9];
 216     struct wps_data *data = gui_wps[0].data;
 217
 218     if (!data)
 219         return false;
 220
 221     DEBUGF("Looking for album art for %s\n", id3->path);
 222
 223     /* Write the size string, e.g. ".100x100". */
 224     snprintf(size_string, sizeof(size_string), ".%dx%d",
 225              data->albumart_max_width, data->albumart_max_height);
 226
 227     /* First we look for a bitmap of the right size */
 228     if (search_albumart_files(id3, size_string, buf, buflen))
 229         return true;
 230
 231     /* Then we look for generic bitmaps */
 232     *size_string = 0;
 233     return search_albumart_files(id3, size_string, buf, buflen);
 234 }
 235
 236 /* Draw the album art bitmap from the given handle ID onto the given WPS.
 237    Call with clear = true to clear the bitmap instead of drawing it. */
 238 void draw_album_art(struct gui_wps *gwps, int handle_id, bool clear)
 239 {
 240     if (!gwps || !gwps->data || !gwps->display || handle_id < 0)
 241         return;
 242
 243     struct wps_data *data = gwps->data;
 244
 245 #ifdef HAVE_REMOTE_LCD
 246     /* No album art on RWPS */
 247     if (data->remote_wps)
 248         return;
 249 #endif
 250
 251     struct bitmap *bmp;
 252     if (bufgetdata(handle_id, 0, (void *)&bmp) <= 0)
 253         return;
 254
 255     short x = data->albumart_x;
 256     short y = data->albumart_y;
 257     short width = bmp->width;
 258     short height = bmp->height;
 259
 260     if (data->albumart_max_width > 0)
 261     {
 262         /* Crop if the bitmap is too wide */
 263         width = MIN(bmp->width, data->albumart_max_width);
 264
 265         /* Align */
 266         if (data->albumart_xalign & WPS_ALBUMART_ALIGN_RIGHT)
 267             x += data->albumart_max_width - width;
 268         else if (data->albumart_xalign & WPS_ALBUMART_ALIGN_CENTER)
 269             x += (data->albumart_max_width - width) / 2;
 270     }
 271
 272     if (data->albumart_max_height > 0)
 273     {
 274         /* Crop if the bitmap is too high */
 275         height = MIN(bmp->height, data->albumart_max_height);
 276
 277         /* Align */
 278         if (data->albumart_yalign & WPS_ALBUMART_ALIGN_BOTTOM)
 279             y += data->albumart_max_height - height;
 280         else if (data->albumart_yalign & WPS_ALBUMART_ALIGN_CENTER)
 281             y += (data->albumart_max_height - height) / 2;
 282     }
 283
 284     if (!clear)
 285     {
 286         /* Draw the bitmap */
 287         gwps->display->set_drawmode(DRMODE_FG);
 288         gwps->display->bitmap_part((fb_data*)bmp->data, 0, 0, bmp->width,
 289                                    x, y, width, height);
 290         gwps->display->set_drawmode(DRMODE_SOLID);
 291     }
 292     else
 293     {
 294         /* Clear the bitmap */
 295         gwps->display->set_drawmode(DRMODE_SOLID|DRMODE_INVERSEVID);
 296         gwps->display->fillrect(x, y, width, height);
 297         gwps->display->set_drawmode(DRMODE_SOLID);
 298     }
 299 }