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