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 "mpeg.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 #ifdef SIMULATOR
  58 #define PREFIX(_x_) sim_ ## _x_
  59 #else
  60 #define PREFIX
  61 #endif
  62
  63 #ifdef SIMULATOR
  64 #if CONFIG_CODEC == SWCODEC
  65 unsigned char codecbuf[CODEC_SIZE];
  66 #endif
  67 void *sim_codec_load_ram(char* codecptr, int size, void **pd);
  68 void sim_codec_close(void *pd);
  69 #else
  70 #define sim_codec_close(x)
  71 #endif
  72
  73 size_t codec_size;
  74
  75 extern void* plugin_get_audio_buffer(size_t *buffer_size);
  76
  77 struct codec_api ci = {
  78
  79     0, /* filesize */
  80     0, /* curpos */
  81     NULL, /* id3 */
  82     NULL, /* taginfo_ready */
  83     false, /* stop_codec */
  84     0, /* new_track */
  85     0, /* seek_time */
  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, /* advance_buffer_loc */
  94     NULL, /* seek_buffer */
  95     NULL, /* seek_complete */
  96     NULL, /* request_next_track */
  97     NULL, /* discard_codec */
  98     NULL, /* set_offset */
  99     NULL, /* configure */
 100
 101     /* kernel/ system */
 102 #ifdef CPU_ARM
 103     __div0,
 104 #endif
 105     PREFIX(sleep),
 106     yield,
 107
 108 #if NUM_CORES > 1
 109     create_thread,
 110     thread_thaw,
 111     thread_wait,
 112     semaphore_init,
 113     semaphore_wait,
 114     semaphore_release,
 115 #endif
 116
 117 #if NUM_CORES > 1
 118     cpucache_flush,
 119     cpucache_invalidate,
 120 #endif
 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 #if defined(HAVE_RECORDING) && !defined(SIMULATOR)
 151     false,  /* stop_encoder */
 152     0,      /* enc_codec_loaded */
 153     enc_get_inputs,
 154     enc_set_parameters,
 155     enc_get_chunk,
 156     enc_finish_chunk,
 157     enc_get_pcm_data,
 158     enc_unget_pcm_data,
 159
 160     /* file */
 161     (open_func)PREFIX(open),
 162     close,
 163     (read_func)read,
 164     PREFIX(lseek),
 165     (write_func)write,
 166     round_value_to_list32,
 167
 168 #endif
 169
 170     /* new stuff at the end, sort into place next time
 171        the API gets incompatible */
 172 };
 173
 174 void codec_get_full_path(char *path, const char *codec_root_fn)
 175 {
 176     snprintf(path, MAX_PATH-1, CODECS_DIR "/%s." CODEC_EXTENSION,
 177              codec_root_fn);
 178 }
 179
 180 static int codec_load_ram(int size, struct codec_api *api)
 181 {
 182     struct codec_header *hdr;
 183     int status;
 184 #ifndef SIMULATOR
 185     hdr = (struct codec_header *)codecbuf;
 186
 187     if (size <= (signed)sizeof(struct codec_header)
 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         || hdr->load_addr != codecbuf
 195         || hdr->end_addr > codecbuf + CODEC_SIZE)
 196     {
 197         logf("codec header error");
 198         return CODEC_ERROR;
 199     }
 200
 201     codec_size = hdr->end_addr - codecbuf;
 202
 203 #else /* SIMULATOR */
 204     void *pd;
 205
 206     hdr = sim_codec_load_ram(codecbuf, size, &pd);
 207
 208     if (pd == NULL)
 209         return CODEC_ERROR;
 210
 211     if (hdr == NULL
 212         || (hdr->magic != CODEC_MAGIC
 213 #ifdef HAVE_RECORDING
 214              && hdr->magic != CODEC_ENC_MAGIC
 215 #endif
 216            )
 217         || hdr->target_id != TARGET_ID) {
 218         sim_codec_close(pd);
 219         return CODEC_ERROR;
 220     }
 221
 222     codec_size = codecbuf - codecbuf;
 223
 224 #endif /* SIMULATOR */
 225     if (hdr->api_version > CODEC_API_VERSION
 226         || hdr->api_version < CODEC_MIN_API_VERSION) {
 227         sim_codec_close(pd);
 228         return CODEC_ERROR;
 229     }
 230
 231     *(hdr->api) = api;
 232     cpucache_invalidate();
 233     status = hdr->entry_point();
 234
 235     sim_codec_close(pd);
 236
 237     return status;
 238 }
 239
 240 int codec_load_buf(unsigned int hid, struct codec_api *api)
 241 {
 242     int rc;
 243     rc = bufread(hid, CODEC_SIZE, codecbuf);
 244     if (rc < 0) {
 245         logf("error loading codec");
 246         return CODEC_ERROR;
 247     }
 248     api->discard_codec();
 249     return codec_load_ram(rc, api);
 250 }
 251
 252 int codec_load_file(const char *plugin, struct codec_api *api)
 253 {
 254     char path[MAX_PATH];
 255     int fd;
 256     int rc;
 257
 258     codec_get_full_path(path, plugin);
 259
 260     fd = open(path, O_RDONLY);
 261     if (fd < 0) {
 262         logf("Codec load error:%d", fd);
 263         splashf(HZ*2, "Couldn't load codec: %s", path);
 264         return fd;
 265     }
 266
 267     rc = read(fd, &codecbuf[0], CODEC_SIZE);
 268     close(fd);
 269     if (rc <= 0) {
 270         logf("Codec read error");
 271         return CODEC_ERROR;
 272     }
 273
 274     return codec_load_ram((size_t)rc, api);
 275 }