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|PLATFORM_MAEMO))
  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, /* set_offset */
 101     NULL, /* configure */
 102
 103     /* kernel/ system */
 104 #if defined(CPU_ARM) && CONFIG_PLATFORM & PLATFORM_NATIVE
 105     __div0,
 106 #endif
 107     sleep,
 108     yield,
 109
 110 #if NUM_CORES > 1
 111     create_thread,
 112     thread_thaw,
 113     thread_wait,
 114     semaphore_init,
 115     semaphore_wait,
 116     semaphore_release,
 117 #endif
 118
 119     cpucache_flush,
 120     cpucache_invalidate,
 121
 122     /* strings and memory */
 123     strcpy,
 124     strlen,
 125     strcmp,
 126     strcat,
 127     memset,
 128     memcpy,
 129     memmove,
 130     memcmp,
 131     memchr,
 132     strcasestr,
 133 #if defined(DEBUG) || defined(SIMULATOR)
 134     debugf,
 135 #endif
 136 #ifdef ROCKBOX_HAS_LOGF
 137     logf,
 138 #endif
 139
 140     (qsort_func)qsort,
 141     &global_settings,
 142
 143 #ifdef RB_PROFILE
 144     profile_thread,
 145     profstop,
 146     __cyg_profile_func_enter,
 147     __cyg_profile_func_exit,
 148 #endif
 149
 150 #ifdef HAVE_RECORDING
 151     enc_get_inputs,
 152     enc_set_parameters,
 153     enc_get_chunk,
 154     enc_finish_chunk,
 155     enc_get_pcm_data,
 156     enc_unget_pcm_data,
 157
 158     /* file */
 159     (open_func)PREFIX(open),
 160     PREFIX(close),
 161     (read_func)PREFIX(read),
 162     PREFIX(lseek),
 163     (write_func)PREFIX(write),
 164     round_value_to_list32,
 165
 166 #endif /* HAVE_RECORDING */
 167
 168     /* new stuff at the end, sort into place next time
 169        the API gets incompatible */
 170 };
 171
 172 void codec_get_full_path(char *path, const char *codec_root_fn)
 173 {
 174     snprintf(path, MAX_PATH-1, "%s/%s." CODEC_EXTENSION,
 175              CODECS_DIR, codec_root_fn);
 176 }
 177
 178 static void * codec_load_ram(void *handle, struct codec_api *api)
 179 {
 180     struct codec_header *c_hdr = lc_get_header(handle);
 181     struct lc_header    *hdr   = c_hdr ? &c_hdr->lc_hdr : NULL;
 182
 183     if (hdr == NULL
 184         || (hdr->magic != CODEC_MAGIC
 185 #ifdef HAVE_RECORDING
 186              && hdr->magic != CODEC_ENC_MAGIC
 187 #endif
 188             )
 189         || hdr->target_id != TARGET_ID
 190 #if (CONFIG_PLATFORM & PLATFORM_NATIVE)
 191         || hdr->load_addr != codecbuf
 192         || hdr->end_addr > codecbuf + CODEC_SIZE
 193 #endif
 194         )
 195     {
 196         logf("codec header error");
 197         lc_close(handle);
 198         return NULL;
 199     }
 200
 201     if (hdr->api_version > CODEC_API_VERSION
 202         || hdr->api_version < CODEC_MIN_API_VERSION) {
 203         logf("codec api version error");
 204         lc_close(handle);
 205         return NULL;
 206     }
 207
 208 #if (CONFIG_PLATFORM & PLATFORM_NATIVE)
 209     codec_size = hdr->end_addr - codecbuf;
 210 #else
 211     codec_size = 0;
 212 #endif
 213
 214     *(c_hdr->api) = api;
 215
 216     return handle;
 217 }
 218
 219 void * codec_load_buf(int hid, struct codec_api *api)
 220 {
 221     int rc;
 222     void *handle;
 223     rc = bufread(hid, CODEC_SIZE, codecbuf);
 224     if (rc < 0) {
 225         logf("Codec: cannot read buf handle");
 226         return NULL;
 227     }
 228
 229     handle = lc_open_from_mem(codecbuf, rc);
 230
 231     if (handle == NULL) {
 232         logf("error loading codec");
 233         return NULL;
 234     }
 235
 236     return codec_load_ram(handle, api);
 237 }
 238
 239 void * codec_load_file(const char *plugin, struct codec_api *api)
 240 {
 241     char path[MAX_PATH];
 242     void *handle;
 243
 244     codec_get_full_path(path, plugin);
 245
 246     handle = lc_open(path, codecbuf, CODEC_SIZE);
 247
 248     if (handle == NULL) {
 249         logf("Codec: cannot read file");
 250         return NULL;
 251     }
 252
 253     return codec_load_ram(handle, api);
 254 }
 255
 256 int codec_begin(void *handle)
 257 {
 258     int status = CODEC_ERROR;
 259     struct codec_header *c_hdr;
 260
 261     c_hdr = lc_get_header(handle);
 262
 263     if (c_hdr != NULL) {
 264         logf("Codec: calling entry_point");
 265         status = c_hdr->entry_point();
 266     }
 267
 268     return status;
 269 }
 270
 271 void codec_close(void *handle)
 272 {
 273     if (handle)
 274         lc_close(handle);
 275 }