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|PLATFORM_PANDORA))
  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     ERR_HANDLE_NOT_FOUND, /* audio_hid */
  86     NULL, /* struct dsp_config *dsp */
  87     NULL, /* codec_get_buffer */
  88     NULL, /* pcmbuf_insert */
  89     NULL, /* set_elapsed */
  90     NULL, /* read_filebuf */
  91     NULL, /* request_buffer */
  92     NULL, /* advance_buffer */
  93     NULL, /* seek_buffer */
  94     NULL, /* seek_complete */
  95     NULL, /* set_offset */
  96     NULL, /* configure */
  97     NULL, /* get_command */
  98
  99     /* kernel/ system */
 100 #if defined(CPU_ARM) && CONFIG_PLATFORM & PLATFORM_NATIVE
 101     __div0,
 102 #endif
 103     sleep,
 104     yield,
 105
 106 #if NUM_CORES > 1
 107     create_thread,
 108     thread_thaw,
 109     thread_wait,
 110     semaphore_init,
 111     semaphore_wait,
 112     semaphore_release,
 113 #endif
 114
 115     cpucache_flush,
 116     cpucache_invalidate,
 117
 118     /* strings and memory */
 119     strcpy,
 120     strlen,
 121     strcmp,
 122     strcat,
 123     memset,
 124     memcpy,
 125     memmove,
 126     memcmp,
 127     memchr,
 128     strcasestr,
 129 #if defined(DEBUG) || defined(SIMULATOR)
 130     debugf,
 131 #endif
 132 #ifdef ROCKBOX_HAS_LOGF
 133     logf,
 134 #endif
 135
 136     (qsort_func)qsort,
 137     &global_settings,
 138
 139 #ifdef RB_PROFILE
 140     profile_thread,
 141     profstop,
 142     __cyg_profile_func_enter,
 143     __cyg_profile_func_exit,
 144 #endif
 145
 146 #ifdef HAVE_RECORDING
 147     enc_get_inputs,
 148     enc_set_parameters,
 149     enc_get_chunk,
 150     enc_finish_chunk,
 151     enc_get_pcm_data,
 152     enc_unget_pcm_data,
 153
 154     /* file */
 155     (open_func)PREFIX(open),
 156     PREFIX(close),
 157     (read_func)PREFIX(read),
 158     PREFIX(lseek),
 159     (write_func)PREFIX(write),
 160     round_value_to_list32,
 161
 162 #endif /* HAVE_RECORDING */
 163
 164     /* new stuff at the end, sort into place next time
 165        the API gets incompatible */
 166 };
 167
 168 void codec_get_full_path(char *path, const char *codec_root_fn)
 169 {
 170     snprintf(path, MAX_PATH-1, "%s/%s." CODEC_EXTENSION,
 171              CODECS_DIR, codec_root_fn);
 172 }
 173
 174 /** codec loading and call interface **/
 175 static void *curr_handle = NULL;
 176 static struct codec_header *c_hdr = NULL;
 177
 178 static int codec_load_ram(struct codec_api *api)
 179 {
 180     struct lc_header *hdr;
 181
 182     c_hdr = lc_get_header(curr_handle);
 183     hdr   = c_hdr ? &c_hdr->lc_hdr : NULL;
 184
 185     if (hdr == NULL
 186         || (hdr->magic != CODEC_MAGIC
 187 #ifdef HAVE_RECORDING
 188              && hdr->magic != CODEC_ENC_MAGIC
 189 #endif
 190             )
 191         || hdr->target_id != TARGET_ID
 192 #if (CONFIG_PLATFORM & PLATFORM_NATIVE)
 193         || hdr->load_addr != codecbuf
 194         || hdr->end_addr > codecbuf + CODEC_SIZE
 195 #endif
 196         )
 197     {
 198         logf("codec header error");
 199         lc_close(curr_handle);
 200         curr_handle = NULL;
 201         return CODEC_ERROR;
 202     }
 203
 204     if (hdr->api_version > CODEC_API_VERSION
 205         || hdr->api_version < CODEC_MIN_API_VERSION) {
 206         logf("codec api version error");
 207         lc_close(curr_handle);
 208         curr_handle = NULL;
 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
 220     logf("Codec: calling entrypoint");
 221     return c_hdr->entry_point(CODEC_LOAD);
 222 }
 223
 224 int codec_load_buf(int hid, struct codec_api *api)
 225 {
 226     int rc = bufread(hid, CODEC_SIZE, codecbuf);
 227
 228     if (rc < 0) {
 229         logf("Codec: cannot read buf handle");
 230         return CODEC_ERROR;
 231     }
 232
 233     curr_handle = lc_open_from_mem(codecbuf, rc);
 234
 235     if (curr_handle == NULL) {
 236         logf("Codec: load error");
 237         return CODEC_ERROR;
 238     }
 239
 240     return codec_load_ram(api);
 241 }
 242
 243 int codec_load_file(const char *plugin, struct codec_api *api)
 244 {
 245     char path[MAX_PATH];
 246
 247     codec_get_full_path(path, plugin);
 248
 249     curr_handle = lc_open(path, codecbuf, CODEC_SIZE);
 250
 251     if (curr_handle == NULL) {
 252         logf("Codec: cannot read file");
 253         return CODEC_ERROR;
 254     }
 255
 256     return codec_load_ram(api);
 257 }
 258
 259 int codec_run_proc(void)
 260 {
 261     if (curr_handle == NULL) {
 262         logf("Codec: no codec to run");
 263         return CODEC_ERROR;
 264     }
 265
 266     logf("Codec: entering run state");
 267     return c_hdr->run_proc();
 268 }
 269
 270 int codec_close(void)
 271 {
 272     int status = CODEC_OK;
 273
 274     if (curr_handle != NULL) {
 275         logf("Codec: cleaning up");
 276         status = c_hdr->entry_point(CODEC_UNLOAD);
 277         lc_close(curr_handle);
 278         curr_handle = NULL;
 279     }
 280
 281     return status;
 282 }