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