firmware/screendump.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2009 by Jens Arnold
  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 "config.h"
  23 #include "screendump.h"
  24
  25 #include "file.h"
  26 #include "general.h"
  27 #include "lcd.h"
  28 #include "stdlib.h"
  29 #include "string.h"
  30 #include "system.h"
  31
  32 #ifdef HAVE_REMOTE_LCD
  33 #include "lcd-remote.h"
  34 #endif
  35
  36 #if LCD_DEPTH == 16
  37 #define BMP_COMPRESSION 3 /* BI_BITFIELDS */
  38 #define BMP_NUMCOLORS 3
  39 #else /* LCD_DEPTH != 16 */
  40 #define BMP_COMPRESSION 0 /* BI_RGB */
  41 #if LCD_DEPTH <= 8
  42 #ifdef HAVE_LCD_SPLIT
  43 #define BMP_NUMCOLORS (2 << LCD_DEPTH)
  44 #else
  45 #define BMP_NUMCOLORS (1 << LCD_DEPTH)
  46 #endif
  47 #else /* LCD_DEPTH > 8 */
  48 #define BMP_NUMCOLORS 0
  49 #endif /* LCD_DEPTH > 8 */
  50 #endif /* LCD_DEPTH != 16 */
  51
  52 #define BMP_HEADERSIZE (54 + 4 * BMP_NUMCOLORS)
  53 #define BMP_DATASIZE   (DUMP_BMP_LINESIZE * (LCD_HEIGHT+LCD_SPLIT_LINES))
  54 #define BMP_TOTALSIZE  (BMP_HEADERSIZE + BMP_DATASIZE)
  55
  56 static const unsigned char bmpheader[] =
  57 {
  58     0x42, 0x4d,                 /* 'BM' */
  59     LE32_CONST(BMP_TOTALSIZE),  /* Total file size */
  60     0x00, 0x00, 0x00, 0x00,     /* Reserved */
  61     LE32_CONST(BMP_HEADERSIZE), /* Offset to start of pixel data */
  62
  63     0x28, 0x00, 0x00, 0x00,     /* Size of (2nd) header */
  64     LE32_CONST(LCD_WIDTH),      /* Width in pixels */
  65     LE32_CONST(LCD_HEIGHT+LCD_SPLIT_LINES),  /* Height in pixels */
  66     0x01, 0x00,                 /* Number of planes (always 1) */
  67     LE16_CONST(DUMP_BMP_BPP),   /* Bits per pixel 1/4/8/16/24 */
  68     LE32_CONST(BMP_COMPRESSION),/* Compression mode */
  69     LE32_CONST(BMP_DATASIZE),   /* Size of bitmap data */
  70     0xc4, 0x0e, 0x00, 0x00,     /* Horizontal resolution (pixels/meter) */
  71     0xc4, 0x0e, 0x00, 0x00,     /* Vertical resolution (pixels/meter) */
  72     LE32_CONST(BMP_NUMCOLORS),  /* Number of used colours */
  73     LE32_CONST(BMP_NUMCOLORS),  /* Number of important colours */
  74
  75 #if LCD_DEPTH == 1
  76 #ifdef HAVE_NEGATIVE_LCD
  77     BMP_COLOR(LCD_BL_DARKCOLOR),
  78     BMP_COLOR(LCD_BL_BRIGHTCOLOR),
  79 #ifdef HAVE_LCD_SPLIT
  80     BMP_COLOR(LCD_BL_DARKCOLOR_2),
  81     BMP_COLOR(LCD_BL_BRIGHTCOLOR_2),
  82 #endif
  83 #else /* positive display */
  84     BMP_COLOR(LCD_BL_BRIGHTCOLOR),
  85     BMP_COLOR(LCD_BL_DARKCOLOR),
  86 #endif /* positive display */
  87 #elif LCD_DEPTH == 2
  88     BMP_COLOR(LCD_BL_BRIGHTCOLOR),
  89     BMP_COLOR_MIX(LCD_BL_BRIGHTCOLOR, LCD_BL_DARKCOLOR, 1, 3),
  90     BMP_COLOR_MIX(LCD_BL_BRIGHTCOLOR, LCD_BL_DARKCOLOR, 2, 3),
  91     BMP_COLOR(LCD_BL_DARKCOLOR),
  92 #elif LCD_DEPTH == 16
  93     0x00, 0xf8, 0x00, 0x00,     /* red bitfield mask */
  94     0xe0, 0x07, 0x00, 0x00,     /* green bitfield mask */
  95     0x1f, 0x00, 0x00, 0x00,     /* blue bitfield mask */
  96 #endif
  97 };
  98
  99 static void (*screen_dump_hook)(int fh) = NULL;
 100
 101 void screen_dump(void)
 102 {
 103     int fd, y;
 104     char filename[32];
 105
 106     fb_data *src;
 107 #if LCD_DEPTH == 1
 108     unsigned mask;
 109     unsigned val;
 110 #elif (LCD_DEPTH == 2) && (LCD_PIXELFORMAT != HORIZONTAL_PACKING)
 111     int shift;
 112     unsigned val;
 113 #endif
 114 #if LCD_DEPTH <= 8
 115     unsigned char *dst, *dst_end;
 116     unsigned char linebuf[DUMP_BMP_LINESIZE];
 117 #elif LCD_DEPTH <= 16
 118     unsigned short *dst, *dst_end;
 119     unsigned short linebuf[DUMP_BMP_LINESIZE/2];
 120 #endif
 121
 122 #if CONFIG_RTC
 123     create_datetime_filename(filename, "", "dump ", ".bmp", false);
 124 #else
 125     create_numbered_filename(filename, "", "dump_", ".bmp", 4
 126                              IF_CNFN_NUM_(, NULL));
 127 #endif
 128
 129     fd = creat(filename, 0666);
 130     if (fd < 0)
 131         return;
 132
 133     if (screen_dump_hook)
 134     {
 135         screen_dump_hook(fd);
 136     }
 137     else
 138     {
 139         write(fd, bmpheader, sizeof(bmpheader));
 140
 141         /* BMP image goes bottom up */
 142         for (y = LCD_HEIGHT - 1; y >= 0; y--)
 143         {
 144             memset(linebuf, 0, DUMP_BMP_LINESIZE);
 145
 146 #if defined(HAVE_LCD_SPLIT) && (LCD_SPLIT_LINES == 2)
 147             if (y == LCD_SPLIT_POS - 1)
 148             {
 149                 write(fd, linebuf, DUMP_BMP_LINESIZE);
 150                 write(fd, linebuf, DUMP_BMP_LINESIZE);
 151             }
 152 #endif
 153             dst = linebuf;
 154
 155 #if LCD_DEPTH == 1
 156             dst_end = dst + LCD_WIDTH/2;
 157             src = FBADDR(0, y >> 3);
 158             mask = BIT_N(y & 7);
 159
 160             do
 161             {
 162                 val  = (*src++ & mask) ? 0x10 : 0;
 163                 val |= (*src++ & mask) ? 0x01 : 0;
 164 #ifdef HAVE_LCD_SPLIT
 165                 if (y < LCD_SPLIT_POS)
 166                     val |= 0x22;
 167 #endif
 168                 *dst++ = val;
 169             }
 170             while (dst < dst_end);
 171
 172 #elif LCD_DEPTH == 2
 173             dst_end = dst + LCD_WIDTH/2;
 174
 175 #if LCD_PIXELFORMAT == HORIZONTAL_PACKING
 176             src = FBADDR(0, y);
 177
 178             do
 179             {
 180                 unsigned data = *src++;
 181
 182                 *dst++ = ((data >> 2) & 0x30) | ((data >> 4) & 0x03);
 183                 *dst++ = ((data << 2) & 0x30) | (data & 0x03);
 184             }
 185             while (dst < dst_end);
 186
 187 #elif LCD_PIXELFORMAT == VERTICAL_PACKING
 188             src = FBADDR(0, y >> 2);
 189             shift = 2 * (y & 3);
 190
 191             do
 192             {
 193                 val  = ((*src++ >> shift) & 3) << 4;
 194                 val |= ((*src++ >> shift) & 3);
 195                 *dst++ = val;
 196             }
 197             while (dst < dst_end);
 198
 199 #elif LCD_PIXELFORMAT == VERTICAL_INTERLEAVED
 200             src = FBADDR(0, y >> 3);
 201             shift = y & 7;
 202
 203             do
 204             {
 205                 unsigned data = (*src++ >> shift) & 0x0101;
 206
 207                 val  = (((data >> 7) | data) & 3) << 4;
 208                 data = (*src++ >> shift) & 0x0101;
 209                 val |= ((data >> 7) | data) & 3;
 210                 *dst++ = val;
 211             }
 212             while (dst < dst_end);
 213
 214 #endif
 215 #elif LCD_DEPTH == 16
 216             dst_end = dst + LCD_WIDTH;
 217             src = FBADDR(0, y);
 218
 219             do
 220             {
 221 #if (LCD_PIXELFORMAT == RGB565SWAPPED)
 222                 /* iPod LCD data is big endian although the CPU is not */
 223                 *dst++ = htobe16(*src++);
 224 #else
 225                 *dst++ = htole16(*src++);
 226 #endif
 227             }
 228             while (dst < dst_end);
 229
 230 #endif /* LCD_DEPTH */
 231             write(fd, linebuf, DUMP_BMP_LINESIZE);
 232         }
 233     }
 234     close(fd);
 235 }
 236
 237 void screen_dump_set_hook(void (*hook)(int fh))
 238 {
 239     screen_dump_hook = hook;
 240 }
 241
 242 #ifdef HAVE_REMOTE_LCD
 243
 244 #define RBMP_COMPRESSION 0 /* BI_RGB */
 245 #define RBMP_NUMCOLORS   (1 << LCD_REMOTE_DEPTH)
 246 #define RBMP_BPP         4
 247 #define RBMP_LINESIZE    ((LCD_REMOTE_WIDTH/2 + 3) & ~3)
 248
 249 #define RBMP_HEADERSIZE (54 + 4 * RBMP_NUMCOLORS)
 250 #define RBMP_DATASIZE   (RBMP_LINESIZE * LCD_REMOTE_HEIGHT)
 251 #define RBMP_TOTALSIZE  (RBMP_HEADERSIZE + RBMP_DATASIZE)
 252
 253 static const unsigned char rbmpheader[] =
 254 {
 255     0x42, 0x4d,                    /* 'BM' */
 256     LE32_CONST(RBMP_TOTALSIZE),    /* Total file size */
 257     0x00, 0x00, 0x00, 0x00,        /* Reserved */
 258     LE32_CONST(RBMP_HEADERSIZE),   /* Offset to start of pixel data */
 259
 260     0x28, 0x00, 0x00, 0x00,        /* Size of (2nd) header */
 261     LE32_CONST(LCD_REMOTE_WIDTH),  /* Width in pixels */
 262     LE32_CONST(LCD_REMOTE_HEIGHT), /* Height in pixels */
 263     0x01, 0x00,                    /* Number of planes (always 1) */
 264     LE16_CONST(RBMP_BPP),          /* Bits per pixel 1/4/8/16/24 */
 265     LE32_CONST(RBMP_COMPRESSION),  /* Compression mode */
 266     LE32_CONST(RBMP_DATASIZE),     /* Size of bitmap data */
 267     0xc4, 0x0e, 0x00, 0x00,        /* Horizontal resolution (pixels/meter) */
 268     0xc4, 0x0e, 0x00, 0x00,        /* Vertical resolution (pixels/meter) */
 269     LE32_CONST(RBMP_NUMCOLORS),    /* Number of used colours */
 270     LE32_CONST(RBMP_NUMCOLORS),    /* Number of important colours */
 271
 272 #if LCD_REMOTE_DEPTH == 1
 273     BMP_COLOR(LCD_REMOTE_BL_BRIGHTCOLOR),
 274     BMP_COLOR(LCD_REMOTE_BL_DARKCOLOR),
 275 #elif LCD_REMOTE_DEPTH == 2
 276     BMP_COLOR(LCD_REMOTE_BL_BRIGHTCOLOR),
 277     BMP_COLOR_MIX(LCD_REMOTE_BL_BRIGHTCOLOR, LCD_REMOTE_BL_DARKCOLOR, 1, 3),
 278     BMP_COLOR_MIX(LCD_REMOTE_BL_BRIGHTCOLOR, LCD_REMOTE_BL_DARKCOLOR, 2, 3),
 279     BMP_COLOR(LCD_REMOTE_BL_DARKCOLOR),
 280 #endif
 281 };
 282
 283 void remote_screen_dump(void)
 284 {
 285     int fd, y;
 286     char filename[32];
 287
 288     fb_remote_data *src;
 289 #if LCD_REMOTE_DEPTH == 1
 290     unsigned mask;
 291     unsigned val;
 292 #elif LCD_REMOTE_DEPTH == 2
 293     int shift;
 294     unsigned val;
 295 #endif
 296     unsigned char *dst, *dst_end;
 297     unsigned char linebuf[RBMP_LINESIZE];
 298
 299 #if CONFIG_RTC
 300     create_datetime_filename(filename, "", "rdump ", ".bmp", false);
 301 #else
 302     create_numbered_filename(filename, "", "rdump_", ".bmp", 4
 303                              IF_CNFN_NUM_(, NULL));
 304 #endif
 305
 306     fd = creat(filename, 0666);
 307     if (fd < 0)
 308         return;
 309
 310     write(fd, rbmpheader, sizeof(rbmpheader));
 311
 312     /* BMP image goes bottom up */
 313     for (y = LCD_REMOTE_HEIGHT - 1; y >= 0; y--)
 314     {
 315         memset(linebuf, 0, RBMP_LINESIZE);
 316
 317         dst = linebuf;
 318
 319 #if LCD_REMOTE_DEPTH == 1
 320         dst_end = dst + LCD_REMOTE_WIDTH/2;
 321         src = FBREMOTEADDR(0, y >> 3);
 322         mask = BIT_N(y & 7);
 323
 324         do
 325         {
 326             val  = (*src++ & mask) ? 0x10 : 0;
 327             val |= (*src++ & mask) ? 0x01 : 0;
 328             *dst++ = val;
 329         }
 330         while (dst < dst_end);
 331
 332 #elif LCD_REMOTE_DEPTH == 2
 333         dst_end = dst + LCD_REMOTE_WIDTH/2;
 334
 335 #if LCD_REMOTE_PIXELFORMAT == VERTICAL_INTERLEAVED
 336         src = FBREMOTEADDR(0, (y >> 3));
 337         shift = y & 7;
 338
 339         do
 340         {
 341             unsigned data = (*src++ >> shift) & 0x0101;
 342
 343             val  = (((data >> 7) | data) & 3) << 4;
 344             data = (*src++ >> shift) & 0x0101;
 345             val |= ((data >> 7) | data) & 3;
 346             *dst++ = val;
 347         }
 348         while (dst < dst_end);
 349
 350 #endif
 351 #endif /* LCD_REMOTE_DEPTH */
 352         write(fd, linebuf, RBMP_LINESIZE);
 353     }
 354     close(fd);
 355 }
 356
 357 #endif /* HAVE_REMOTE_LCD */