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 struct codec_api ci = {
  77
  78     0, /* filesize */
  79     0, /* curpos */
  80     NULL, /* id3 */
  81     NULL, /* taginfo_ready */
  82     false, /* stop_codec */
  83     0, /* new_track */
  84     0, /* seek_time */
  85     NULL, /* struct dsp_config *dsp */
  86     NULL, /* codec_get_buffer */
  87     NULL, /* pcmbuf_insert */
  88     NULL, /* set_elapsed */
  89     NULL, /* read_filebuf */
  90     NULL, /* request_buffer */
  91     NULL, /* advance_buffer */
  92     NULL, /* advance_buffer_loc */
  93     NULL, /* seek_buffer */
  94     NULL, /* seek_complete */
  95     NULL, /* request_next_track */
  96     NULL, /* discard_codec */
  97     NULL, /* set_offset */
  98     NULL, /* configure */
  99
 100     /* kernel/ system */
 101 #ifdef CPU_ARM
 102     __div0,
 103 #endif
 104     PREFIX(sleep),
 105     yield,
 106
 107 #if NUM_CORES > 1
 108     create_thread,
 109     thread_thaw,
 110     thread_wait,
 111     semaphore_init,
 112     semaphore_wait,
 113     semaphore_release,
 114 #endif
 115
 116 #if NUM_CORES > 1
 117     cpucache_flush,
 118     cpucache_invalidate,
 119 #endif
 120
 121     /* strings and memory */
 122     strcpy,
 123     strlen,
 124     strcmp,
 125     strcat,
 126     memset,
 127     memcpy,
 128     memmove,
 129     memcmp,
 130     memchr,
 131     strcasestr,
 132 #if defined(DEBUG) || defined(SIMULATOR)
 133     debugf,
 134 #endif
 135 #ifdef ROCKBOX_HAS_LOGF
 136     logf,
 137 #endif
 138
 139     (qsort_func)qsort,
 140     &global_settings,
 141
 142 #ifdef RB_PROFILE
 143     profile_thread,
 144     profstop,
 145     __cyg_profile_func_enter,
 146     __cyg_profile_func_exit,
 147 #endif
 148
 149 #if defined(HAVE_RECORDING) && !defined(SIMULATOR)
 150     false,  /* stop_encoder */
 151     0,      /* enc_codec_loaded */
 152     enc_get_inputs,
 153     enc_set_parameters,
 154     enc_get_chunk,
 155     enc_finish_chunk,
 156     enc_get_pcm_data,
 157     enc_unget_pcm_data,
 158
 159     /* file */
 160     (open_func)PREFIX(open),
 161     close,
 162     (read_func)read,
 163     PREFIX(lseek),
 164     (write_func)write,
 165     round_value_to_list32,
 166
 167 #endif
 168
 169     /* new stuff at the end, sort into place next time
 170        the API gets incompatible */
 171 };
 172
 173 void codec_get_full_path(char *path, const char *codec_root_fn)
 174 {
 175     snprintf(path, MAX_PATH-1, CODECS_DIR "/%s." CODEC_EXTENSION,
 176              codec_root_fn);
 177 }
 178
 179 static int codec_load_ram(int size, struct codec_api *api)
 180 {
 181     struct codec_header *hdr;
 182     int status;
 183 #ifndef SIMULATOR
 184     hdr = (struct codec_header *)codecbuf;
 185
 186     if (size <= (signed)sizeof(struct codec_header)
 187         || (hdr->magic != CODEC_MAGIC
 188 #ifdef HAVE_RECORDING
 189              && hdr->magic != CODEC_ENC_MAGIC
 190 #endif
 191             )
 192         || hdr->target_id != TARGET_ID
 193         || hdr->load_addr != codecbuf
 194         || hdr->end_addr > codecbuf + CODEC_SIZE)
 195     {
 196         logf("codec header error");
 197         return CODEC_ERROR;
 198     }
 199
 200     codec_size = hdr->end_addr - codecbuf;
 201
 202 #else /* SIMULATOR */
 203     void *pd;
 204
 205     hdr = sim_codec_load_ram(codecbuf, size, &pd);
 206
 207     if (pd == NULL)
 208         return CODEC_ERROR;
 209
 210     if (hdr == NULL
 211         || (hdr->magic != CODEC_MAGIC
 212 #ifdef HAVE_RECORDING
 213              && hdr->magic != CODEC_ENC_MAGIC
 214 #endif
 215            )
 216         || hdr->target_id != TARGET_ID) {
 217         sim_codec_close(pd);
 218         return CODEC_ERROR;
 219     }
 220
 221     codec_size = codecbuf - codecbuf;
 222
 223 #endif /* SIMULATOR */
 224     if (hdr->api_version > CODEC_API_VERSION
 225         || hdr->api_version < CODEC_MIN_API_VERSION) {
 226         sim_codec_close(pd);
 227         return CODEC_ERROR;
 228     }
 229
 230     *(hdr->api) = api;
 231     cpucache_invalidate();
 232     status = hdr->entry_point();
 233
 234     sim_codec_close(pd);
 235
 236     return status;
 237 }
 238
 239 int codec_load_buf(unsigned int hid, struct codec_api *api)
 240 {
 241     int rc;
 242     rc = bufread(hid, CODEC_SIZE, codecbuf);
 243     if (rc < 0) {
 244         logf("error loading codec");
 245         return CODEC_ERROR;
 246     }
 247     api->discard_codec();
 248     return codec_load_ram(rc, api);
 249 }
 250
 251 int codec_load_file(const char *plugin, struct codec_api *api)
 252 {
 253     char path[MAX_PATH];
 254     int fd;
 255     int rc;
 256
 257     codec_get_full_path(path, plugin);
 258
 259     fd = open(path, O_RDONLY);
 260     if (fd < 0) {
 261         logf("Codec load error:%d", fd);
 262         splashf(HZ*2, "Couldn't load codec: %s", path);
 263         return fd;
 264     }
 265
 266     rc = read(fd, &codecbuf[0], CODEC_SIZE);
 267     close(fd);
 268     if (rc <= 0) {
 269         logf("Codec read error");
 270         return CODEC_ERROR;
 271     }
 272
 273     return codec_load_ram((size_t)rc, api);
 274 }