apps/codecs.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2002 Björn Stenberg
  11  *
  12  * All files in this archive are subject to the GNU General Public License.
  13  * See the file COPYING in the source tree root for full license agreement.
  14  *
  15  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  16  * KIND, either express or implied.
  17  *
  18  ****************************************************************************/
  19 #include "config.h"
  20
  21 #include <stdbool.h>
  22 #include <string.h>
  23 #include <stdio.h>
  24 #include <atoi.h>
  25 #include <timefuncs.h>
  26 #include <ctype.h>
  27 #include "debug.h"
  28 #include "button.h"
  29 #include "dir.h"
  30 #include "file.h"
  31 #include "kernel.h"
  32 #include "sprintf.h"
  33 #include "logf.h"
  34 #include "screens.h"
  35 #include "misc.h"
  36 #include "mas.h"
  37 #include "codecs.h"
  38 #include "lang.h"
  39 #include "keyboard.h"
  40 #include "mpeg.h"
  41 #include "buffer.h"
  42 #include "mp3_playback.h"
  43 #include "backlight.h"
  44 #include "ata.h"
  45 #include "talk.h"
  46 #include "mp3data.h"
  47 #include "powermgmt.h"
  48 #include "system.h"
  49 #include "sound.h"
  50 #include "database.h"
  51 #include "splash.h"
  52
  53 #ifdef SIMULATOR
  54 #if CONFIG_CODEC == SWCODEC
  55 unsigned char codecbuf[CODEC_SIZE];
  56 #endif
  57 void *sim_codec_load_ram(char* codecptr, int size,
  58         void* ptr2, int bufwrap, void **pd);
  59 void sim_codec_close(void *pd);
  60 #else
  61 #define sim_codec_close(x)
  62 extern unsigned char codecbuf[];
  63 #endif
  64
  65 extern void* plugin_get_audio_buffer(int *buffer_size);
  66
  67 struct codec_api ci_voice;
  68
  69 struct codec_api ci = {
  70
  71     0, /* filesize */
  72     0, /* curpos */
  73     NULL, /* id3 */
  74     NULL, /* taginfo_ready */
  75     false, /* stop_codec */
  76     0, /* new_track */
  77     0, /* seek_time */
  78     NULL, /* get_codec_memory */
  79     NULL, /* pcmbuf_insert */
  80     NULL, /* pcmbuf_insert_split */
  81     NULL, /* set_elapsed */
  82     NULL, /* read_filebuf */
  83     NULL, /* request_buffer */
  84     NULL, /* advance_buffer */
  85     NULL, /* advance_buffer_loc */
  86     NULL, /* seek_buffer */
  87     NULL, /* seek_complete */
  88     NULL, /* mp3_get_filepos */
  89     NULL, /* request_next_track */
  90     NULL, /* discard_codec */
  91     NULL, /* set_offset */
  92     NULL, /* configure */
  93
  94     gui_syncsplash,
  95
  96     /* file */
  97     (open_func)PREFIX(open),
  98     close,
  99     (read_func)read,
 100     PREFIX(lseek),
 101     (creat_func)PREFIX(creat),
 102     (write_func)write,
 103     PREFIX(remove),
 104     PREFIX(rename),
 105     PREFIX(ftruncate),
 106     fdprintf,
 107     read_line,
 108     settings_parseline,
 109 #ifndef SIMULATOR
 110     ata_sleep,
 111 #endif
 112
 113     /* dir */
 114     PREFIX(opendir),
 115     PREFIX(closedir),
 116     PREFIX(readdir),
 117     PREFIX(mkdir),
 118
 119     /* kernel/ system */
 120     PREFIX(sleep),
 121     yield,
 122     &current_tick,
 123     default_event_handler,
 124     default_event_handler_ex,
 125     create_thread,
 126     remove_thread,
 127     reset_poweroff_timer,
 128 #ifndef SIMULATOR
 129     system_memory_guard,
 130     &cpu_frequency,
 131 #ifdef HAVE_ADJUSTABLE_CPU_FREQ
 132     cpu_boost,
 133 #endif
 134 #endif
 135
 136     /* strings and memory */
 137     snprintf,
 138     strcpy,
 139     strncpy,
 140     strlen,
 141     strrchr,
 142     strcmp,
 143     strcasecmp,
 144     strncasecmp,
 145     memset,
 146     memcpy,
 147     memmove,
 148     _ctype_,
 149     atoi,
 150     strchr,
 151     strcat,
 152     memcmp,
 153     strcasestr,
 154     memchr,
 155
 156     /* sound */
 157     sound_set,
 158 #ifndef SIMULATOR
 159     mp3_play_data,
 160     mp3_play_pause,
 161     mp3_play_stop,
 162     mp3_is_playing,
 163 #endif
 164
 165     /* playback control */
 166     PREFIX(audio_play),
 167     audio_stop,
 168     audio_pause,
 169     audio_resume,
 170     audio_next,
 171     audio_prev,
 172     audio_ff_rewind,
 173     audio_next_track,
 174     playlist_amount,
 175     audio_status,
 176     audio_has_changed_track,
 177     audio_current_track,
 178     audio_flush_and_reload_tracks,
 179     audio_get_file_pos,
 180
 181     /* misc */
 182     srand,
 183     rand,
 184     (qsort_func)qsort,
 185     kbd_input,
 186     get_time,
 187     set_time,
 188     plugin_get_audio_buffer,
 189
 190 #if defined(DEBUG) || defined(SIMULATOR)
 191     debugf,
 192 #endif
 193 #ifdef ROCKBOX_HAS_LOGF
 194     logf,
 195 #endif
 196     &global_settings,
 197     mp3info,
 198     count_mp3_frames,
 199     create_xing_header,
 200     find_next_frame,
 201     battery_level,
 202     battery_level_safe,
 203
 204 #ifdef RB_PROFILE
 205     profile_thread,
 206     profstop,
 207     profile_func_enter,
 208     profile_func_exit,
 209 #endif
 210
 211     /* new stuff at the end, sort into place next time
 212        the API gets incompatible */
 213
 214 };
 215
 216 int codec_load_ram(char* codecptr, int size, void* ptr2, int bufwrap,
 217                    struct codec_api *api)
 218 {
 219     struct codec_header *hdr;
 220     int status;
 221 #ifndef SIMULATOR
 222     int copy_n;
 223
 224     if ((char *)&codecbuf[0] != codecptr) {
 225         /* zero out codec buffer to ensure a properly zeroed bss area */
 226         memset(codecbuf, 0, CODEC_SIZE);
 227
 228         size = MIN(size, CODEC_SIZE);
 229         copy_n = MIN(size, bufwrap);
 230         memcpy(codecbuf, codecptr, copy_n);
 231         if (size - copy_n > 0) {
 232             memcpy(&codecbuf[copy_n], ptr2, size - copy_n);
 233         }
 234         api->discard_codec();
 235     }
 236     hdr = (struct codec_header *)codecbuf;
 237
 238     if (size <= (signed)sizeof(struct codec_header)
 239         || hdr->magic != CODEC_MAGIC
 240         || hdr->target_id != TARGET_ID
 241         || hdr->load_addr != codecbuf
 242         || hdr->end_addr > codecbuf + CODEC_SIZE)
 243     {
 244         logf("codec header error");
 245         return CODEC_ERROR;
 246     }
 247 #else /* SIMULATOR */
 248     void *pd;
 249
 250     hdr = sim_codec_load_ram(codecptr, size, ptr2, bufwrap, &pd);
 251     api->discard_codec();
 252
 253     if (pd == NULL)
 254         return CODEC_ERROR;
 255
 256     if (hdr == NULL
 257         || hdr->magic != CODEC_MAGIC
 258         || hdr->target_id != TARGET_ID) {
 259         sim_codec_close(pd);
 260         return CODEC_ERROR;
 261     }
 262 #endif /* SIMULATOR */
 263     if (hdr->api_version > CODEC_API_VERSION
 264         || hdr->api_version < CODEC_MIN_API_VERSION) {
 265         sim_codec_close(pd);
 266         return CODEC_ERROR;
 267     }
 268
 269     invalidate_icache();
 270     status = hdr->entry_point(api);
 271
 272     sim_codec_close(pd);
 273
 274     return status;
 275 }
 276
 277 int codec_load_file(const char *plugin, struct codec_api *api)
 278 {
 279     char msgbuf[80];
 280     int fd;
 281     int rc;
 282
 283     /* zero out codec buffer to ensure a properly zeroed bss area */
 284     memset(codecbuf, 0, CODEC_SIZE);
 285
 286     fd = open(plugin, O_RDONLY);
 287     if (fd < 0) {
 288         snprintf(msgbuf, sizeof(msgbuf)-1, "Couldn't load codec: %s", plugin);
 289         logf("Codec load error:%d", fd);
 290         gui_syncsplash(HZ*2, true, msgbuf);
 291         return fd;
 292     }
 293
 294     rc = read(fd, &codecbuf[0], CODEC_SIZE);
 295     close(fd);
 296     if (rc <= 0) {
 297         logf("Codec read error");
 298         return CODEC_ERROR;
 299     }
 300
 301     return codec_load_ram(codecbuf, (size_t)rc, NULL, 0, api);
 302 }