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  * 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 #include "config.h"
  22
  23 #include <stdbool.h>
  24 #include <string.h>
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <timefuncs.h>
  28 #include <ctype.h>
  29 #include "debug.h"
  30 #include "button.h"
  31 #include "dir.h"
  32 #include "file.h"
  33 #include "kernel.h"
  34 #include "sprintf.h"
  35 #include "screens.h"
  36 #include "misc.h"
  37 #include "mas.h"
  38 #include "codecs.h"
  39 #include "lang.h"
  40 #include "keyboard.h"
  41 #include "buffering.h"
  42 #include "mp3_playback.h"
  43 #include "backlight.h"
  44 #include "storage.h"
  45 #include "talk.h"
  46 #include "mp3data.h"
  47 #include "powermgmt.h"
  48 #include "system.h"
  49 #include "sound.h"
  50 #include "splash.h"
  51 #include "general.h"
  52
  53 #define LOGF_ENABLE
  54 #include "logf.h"
  55
  56 #ifdef SIMULATOR
  57 #define PREFIX(_x_) sim_ ## _x_
  58 #else
  59 #define PREFIX
  60 #endif
  61
  62 #ifdef SIMULATOR
  63 #if CONFIG_CODEC == SWCODEC
  64 unsigned char codecbuf[CODEC_SIZE];
  65 #endif
  66 void *sim_codec_load_ram(char* codecptr, int size, void **pd);
  67 void sim_codec_close(void *pd);
  68 #else
  69 #define sim_codec_close(x)
  70 #endif
  71
  72 size_t codec_size;
  73
  74 extern void* plugin_get_audio_buffer(size_t *buffer_size);
  75
  76 #undef open
  77 static int open(const char* pathname, int flags, ...)
  78 {
  79 #ifdef SIMULATOR
  80     int fd;
  81     if (flags & O_CREAT)
  82     {
  83         va_list ap;
  84         va_start(ap, flags);
  85         fd = sim_open(pathname, flags, va_arg(ap, mode_t));
  86         va_end(ap);
  87     }
  88     else
  89         fd = sim_open(pathname, flags);
  90
  91     return fd;
  92 #else
  93     return file_open(pathname, flags);
  94 #endif
  95 }
  96 struct codec_api ci = {
  97
  98     0, /* filesize */
  99     0, /* curpos */
 100     NULL, /* id3 */
 101     NULL, /* taginfo_ready */
 102     false, /* stop_codec */
 103     0, /* new_track */
 104     0, /* seek_time */
 105     NULL, /* struct dsp_config *dsp */
 106     NULL, /* codec_get_buffer */
 107     NULL, /* pcmbuf_insert */
 108     NULL, /* set_elapsed */
 109     NULL, /* read_filebuf */
 110     NULL, /* request_buffer */
 111     NULL, /* advance_buffer */
 112     NULL, /* advance_buffer_loc */
 113     NULL, /* seek_buffer */
 114     NULL, /* seek_complete */
 115     NULL, /* request_next_track */
 116     NULL, /* discard_codec */
 117     NULL, /* set_offset */
 118     NULL, /* configure */
 119
 120     /* kernel/ system */
 121 #ifdef CPU_ARM
 122     __div0,
 123 #endif
 124     PREFIX(sleep),
 125     yield,
 126
 127 #if NUM_CORES > 1
 128     create_thread,
 129     thread_thaw,
 130     thread_wait,
 131     semaphore_init,
 132     semaphore_wait,
 133     semaphore_release,
 134 #endif
 135
 136 #if NUM_CORES > 1
 137     cpucache_flush,
 138     cpucache_invalidate,
 139 #endif
 140
 141     /* strings and memory */
 142     strcpy,
 143     strlen,
 144     strcmp,
 145     strcat,
 146     memset,
 147     memcpy,
 148     memmove,
 149     memcmp,
 150     memchr,
 151     strcasestr,
 152 #if defined(DEBUG) || defined(SIMULATOR)
 153     debugf,
 154 #endif
 155 #ifdef ROCKBOX_HAS_LOGF
 156     logf,
 157 #endif
 158
 159     (qsort_func)qsort,
 160     &global_settings,
 161
 162 #ifdef RB_PROFILE
 163     profile_thread,
 164     profstop,
 165     __cyg_profile_func_enter,
 166     __cyg_profile_func_exit,
 167 #endif
 168
 169 #if defined(HAVE_RECORDING) && !defined(SIMULATOR)
 170     false,  /* stop_encoder */
 171     0,      /* enc_codec_loaded */
 172     enc_get_inputs,
 173     enc_set_parameters,
 174     enc_get_chunk,
 175     enc_finish_chunk,
 176     enc_get_pcm_data,
 177     enc_unget_pcm_data,
 178
 179     /* file */
 180     (open_func)PREFIX(open),
 181     close,
 182     (read_func)read,
 183     PREFIX(lseek),
 184     (write_func)write,
 185     round_value_to_list32,
 186
 187 #endif
 188
 189     /* new stuff at the end, sort into place next time
 190        the API gets incompatible */
 191 };
 192
 193 void codec_get_full_path(char *path, const char *codec_root_fn)
 194 {
 195     snprintf(path, MAX_PATH-1, CODECS_DIR "/%s." CODEC_EXTENSION,
 196              codec_root_fn);
 197 }
 198
 199 static int codec_load_ram(int size, struct codec_api *api)
 200 {
 201     struct codec_header *hdr;
 202     int status;
 203 #ifndef SIMULATOR
 204     hdr = (struct codec_header *)codecbuf;
 205
 206     if (size <= (signed)sizeof(struct codec_header)
 207         || (hdr->magic != CODEC_MAGIC
 208 #ifdef HAVE_RECORDING
 209              && hdr->magic != CODEC_ENC_MAGIC
 210 #endif
 211             )
 212         || hdr->target_id != TARGET_ID
 213         || hdr->load_addr != codecbuf
 214         || hdr->end_addr > codecbuf + CODEC_SIZE)
 215     {
 216         logf("codec header error");
 217         return CODEC_ERROR;
 218     }
 219
 220     codec_size = hdr->end_addr - codecbuf;
 221
 222 #else /* SIMULATOR */
 223     void *pd;
 224
 225     hdr = sim_codec_load_ram(codecbuf, size, &pd);
 226
 227     if (pd == NULL)
 228         return CODEC_ERROR;
 229
 230     if (hdr == NULL
 231         || (hdr->magic != CODEC_MAGIC
 232 #ifdef HAVE_RECORDING
 233              && hdr->magic != CODEC_ENC_MAGIC
 234 #endif
 235            )
 236         || hdr->target_id != TARGET_ID) {
 237         sim_codec_close(pd);
 238         return CODEC_ERROR;
 239     }
 240
 241     codec_size = codecbuf - codecbuf;
 242
 243 #endif /* SIMULATOR */
 244     if (hdr->api_version > CODEC_API_VERSION
 245         || hdr->api_version < CODEC_MIN_API_VERSION) {
 246         sim_codec_close(pd);
 247         return CODEC_ERROR;
 248     }
 249
 250     *(hdr->api) = api;
 251     cpucache_invalidate();
 252     status = hdr->entry_point();
 253
 254     sim_codec_close(pd);
 255
 256     return status;
 257 }
 258
 259 int codec_load_buf(unsigned int hid, struct codec_api *api)
 260 {
 261     int rc;
 262     rc = bufread(hid, CODEC_SIZE, codecbuf);
 263     if (rc < 0) {
 264         logf("error loading codec");
 265         return CODEC_ERROR;
 266     }
 267     api->discard_codec();
 268     return codec_load_ram(rc, api);
 269 }
 270
 271 int codec_load_file(const char *plugin, struct codec_api *api)
 272 {
 273     char path[MAX_PATH];
 274     int fd;
 275     int rc;
 276
 277     codec_get_full_path(path, plugin);
 278
 279     fd = open(path, O_RDONLY);
 280     if (fd < 0) {
 281         logf("Codec load error:%d", fd);
 282         splashf(HZ*2, "Couldn't load codec: %s", path);
 283         return fd;
 284     }
 285
 286     rc = read(fd, &codecbuf[0], CODEC_SIZE);
 287     close(fd);
 288     if (rc <= 0) {
 289         logf("Codec read error");
 290         return CODEC_ERROR;
 291     }
 292
 293     return codec_load_ram((size_t)rc, api);
 294 }