/*************************************************************************** * __________ __ ___. * Open \______ \ ____ ____ | | _\_ |__ _______ ___ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ * \/ \/ \/ \/ \/ * $Id$ * * Copyright (C) 2002 Robert E. Hak * * 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. * ****************************************************************************/ #ifndef __MENU_H__ #define __MENU_H__ #include /* button definitions */ #if (CONFIG_KEYPAD == IRIVER_H100_PAD) || \ (CONFIG_KEYPAD == IRIVER_H300_PAD) #define MENU_EXIT BUTTON_LEFT #define MENU_EXIT2 BUTTON_OFF #define MENU_EXIT_MENU BUTTON_MODE #define MENU_ENTER BUTTON_RIGHT #define MENU_ENTER2 BUTTON_SELECT #define MENU_RC_EXIT BUTTON_RC_STOP #define MENU_RC_EXIT_MENU BUTTON_RC_MODE #define MENU_RC_ENTER BUTTON_RC_ON #define MENU_RC_ENTER2 BUTTON_RC_MENU #elif CONFIG_KEYPAD == RECORDER_PAD #define MENU_EXIT BUTTON_LEFT #define MENU_EXIT2 BUTTON_OFF #define MENU_EXIT_MENU BUTTON_F1 #define MENU_ENTER BUTTON_RIGHT #define MENU_ENTER2 BUTTON_PLAY #define MENU_RC_EXIT BUTTON_RC_STOP #define MENU_RC_ENTER BUTTON_RC_PLAY #elif CONFIG_KEYPAD == PLAYER_PAD #define MENU_EXIT BUTTON_STOP #define MENU_EXIT_MENU BUTTON_MENU #define MENU_ENTER BUTTON_PLAY #define MENU_RC_EXIT BUTTON_RC_STOP #define MENU_RC_ENTER BUTTON_RC_PLAY #elif CONFIG_KEYPAD == ONDIO_PAD #define MENU_EXIT BUTTON_LEFT #define MENU_EXIT_MENU BUTTON_MENU #define MENU_ENTER BUTTON_RIGHT #elif CONFIG_KEYPAD == GMINI100_PAD #define MENU_EXIT BUTTON_LEFT #define MENU_EXIT2 BUTTON_OFF #define MENU_EXIT_MENU BUTTON_MENU #define MENU_ENTER BUTTON_RIGHT #define MENU_ENTER2 BUTTON_PLAY #elif (CONFIG_KEYPAD == IPOD_4G_PAD) || (CONFIG_KEYPAD == IPOD_NANO_PAD) /* TODO: Check menu button assignments */ #define MENU_NEXT BUTTON_DOWN #define MENU_PREV BUTTON_UP #define MENU_EXIT BUTTON_LEFT #define MENU_EXIT_MENU BUTTON_MENU #define MENU_ENTER BUTTON_RIGHT #endif struct menu_item { unsigned char *desc; /* string or ID */ bool (*function) (void); /* return true if USB was connected */ }; int menu_init(const struct menu_item* mitems, int count, int (*callback)(int, int), const char *button1, const char *button2, const char *button3); void menu_exit(int menu); void put_cursorxy(int x, int y, bool on); /* Returns below define, or number of selected menu item*/ int menu_show(int m); #define MENU_ATTACHED_USB -1 #define MENU_SELECTED_EXIT -2 bool menu_run(int menu); int menu_cursor(int menu); char* menu_description(int menu, int position); void menu_delete(int menu, int position); int menu_count(int menu); bool menu_moveup(int menu); bool menu_movedown(int menu); void menu_draw(int menu); void menu_insert(int menu, int position, char *desc, bool (*function) (void)); void menu_set_cursor(int menu, int position); void menu_talk_selected(int m); #endif /* End __MENU_H__ */ a id='n3' href='#n3'>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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274

/*
 * idct.c
 * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
 * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
 *
 * This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
 * See http://libmpeg2.sourceforge.net/ for updates.
 *
 * mpeg2dec 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.
 *
 * mpeg2dec is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * $Id$
 * libmpeg2 sync history:
 * 2008-07-01 - CVS revision 1.36
 */

#include "plugin.h"

#include "mpeg2dec_config.h"

#include "mpeg2.h"
#include "attributes.h"
#include "mpeg2_internal.h"

#if defined(CPU_COLDFIRE) || defined (CPU_ARM)
#define IDCT_ASM
#endif

#ifndef IDCT_ASM

#define W1 2841 /* 2048 * sqrt (2) * cos (1 * pi / 16) */
#define W2 2676 /* 2048 * sqrt (2) * cos (2 * pi / 16) */
#define W3 2408 /* 2048 * sqrt (2) * cos (3 * pi / 16) */
#define W5 1609 /* 2048 * sqrt (2) * cos (5 * pi / 16) */
#define W6 1108 /* 2048 * sqrt (2) * cos (6 * pi / 16) */
#define W7 565  /* 2048 * sqrt (2) * cos (7 * pi / 16) */

/*
 * In legal streams, the IDCT output should be between -384 and +384.
 * In corrupted streams, it is possible to force the IDCT output to go
 * to +-3826 - this is the worst case for a column IDCT where the
 * column inputs are 16-bit values.
 */
#define CLIP(i) \
    ({ typeof (i) _i = (i); \
       if ((_i & 0xff) != _i) \
           _i = ~(_i >> (8*sizeof(_i) - 1)); \
       _i; })

#if 0
#define BUTTERFLY(t0,t1,W0,W1,d0,d1) \
    do {                             \
        t0 = W0 * d0 + W1 * d1;      \
        t1 = W0 * d1 - W1 * d0;      \
    } while (0)
#else
#define BUTTERFLY(t0,t1,W0,W1,d0,d1) \
    do {                             \
        int tmp = W0 * (d0 + d1);    \
        t0 = tmp + (W1 - W0) * d1;   \
        t1 = tmp - (W1 + W0) * d0;   \
    } while (0)
#endif

static inline void idct_row (int16_t * const block)
{
    int d0, d1, d2, d3;
    int a0, a1, a2, a3, b0, b1, b2, b3;
    int t0, t1, t2, t3;

    /* shortcut */
    if (likely (!(block[1] | ((int32_t *)block)[1] | ((int32_t *)block)[2] |
                 ((int32_t *)block)[3])))
    {
        uint32_t tmp = (uint16_t) (block[0] >> 1);
        tmp |= tmp << 16;
        ((int32_t *)block)[0] = tmp;
        ((int32_t *)block)[1] = tmp;
        ((int32_t *)block)[2] = tmp;
        ((int32_t *)block)[3] = tmp;
        return;
    }

    d0 = (block[0] << 11) + 2048;
    d1 = block[1];
    d2 = block[2] << 11;
    d3 = block[3];
    t0 = d0 + d2;
    t1 = d0 - d2;
    BUTTERFLY (t2, t3, W6, W2, d3, d1);
    a0 = t0 + t2;
    a1 = t1 + t3;
    a2 = t1 - t3;
    a3 = t0 - t2;

    d0 = block[4];
    d1 = block[5];
    d2 = block[6];
    d3 = block[7];
    BUTTERFLY (t0, t1, W7, W1, d3, d0);
    BUTTERFLY (t2, t3, W3, W5, d1, d2);
    b0 = t0 + t2;
    b3 = t1 + t3;
    t0 -= t2;
    t1 -= t3;
    b1 = ((t0 + t1) >> 8) * 181;
    b2 = ((t0 - t1) >> 8) * 181;

    block[0] = (a0 + b0) >> 12;
    block[1] = (a1 + b1) >> 12;
    block[2] = (a2 + b2) >> 12;
    block[3] = (a3 + b3) >> 12;
    block[4] = (a3 - b3) >> 12;
    block[5] = (a2 - b2) >> 12;
    block[6] = (a1 - b1) >> 12;
    block[7] = (a0 - b0) >> 12;
}

static inline void idct_col (int16_t * const block)
{
    int d0, d1, d2, d3;
    int a0, a1, a2, a3, b0, b1, b2, b3;
    int t0, t1, t2, t3;

    d0 = (block[8*0] << 11) + 65536;
    d1 = block[8*1];
    d2 = block[8*2] << 11;
    d3 = block[8*3];
    t0 = d0 + d2;
    t1 = d0 - d2;
    BUTTERFLY (t2, t3, W6, W2, d3, d1);
    a0 = t0 + t2;
    a1 = t1 + t3;
    a2 = t1 - t3;
    a3 = t0 - t2;

    d0 = block[8*4];
    d1 = block[8*5];
    d2 = block[8*6];
    d3 = block[8*7];
    BUTTERFLY (t0, t1, W7, W1, d3, d0);
    BUTTERFLY (t2, t3, W3, W5, d1, d2);
    b0 = t0 + t2;
    b3 = t1 + t3;
    t0 -= t2;
    t1 -= t3;
    b1 = ((t0 + t1) >> 8) * 181;
    b2 = ((t0 - t1) >> 8) * 181;

    block[8*0] = (a0 + b0) >> 17;
    block[8*1] = (a1 + b1) >> 17;
    block[8*2] = (a2 + b2) >> 17;
    block[8*3] = (a3 + b3) >> 17;
    block[8*4] = (a3 - b3) >> 17;
    block[8*5] = (a2 - b2) >> 17;
    block[8*6] = (a1 - b1) >> 17;
    block[8*7] = (a0 - b0) >> 17;
}

void mpeg2_idct_copy (int16_t * block, uint8_t * dest,
                      const int stride)
{
    int i;

    for (i = 0; i < 8; i++)
        idct_row (block + 8 * i);

    for (i = 0; i < 8; i++)
        idct_col (block + i);

    do
    {
        dest[0] = CLIP (block[0]);
        dest[1] = CLIP (block[1]);
        dest[2] = CLIP (block[2]);
        dest[3] = CLIP (block[3]);
        dest[4] = CLIP (block[4]);
        dest[5] = CLIP (block[5]);
        dest[6] = CLIP (block[6]);
        dest[7] = CLIP (block[7]);

        ((int32_t *)block)[0] = 0;
        ((int32_t *)block)[1] = 0;
        ((int32_t *)block)[2] = 0;
        ((int32_t *)block)[3] = 0;

        dest += stride;
        block += 8;
    }
    while (--i);
}

void mpeg2_idct_add (const int last, int16_t * block,