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 "buffer.h"
  43 #include "buffering.h"
  44 #include "mp3_playback.h"
  45 #include "backlight.h"
  46 #include "storage.h"
  47 #include "talk.h"
  48 #include "mp3data.h"
  49 #include "powermgmt.h"
  50 #include "system.h"
  51 #include "sound.h"
  52 #include "splash.h"
  53 #include "general.h"
  54
  55 #define LOGF_ENABLE
  56 #include "logf.h"
  57
  58 #ifdef SIMULATOR
  59 #define PREFIX(_x_) sim_ ## _x_
  60 #else
  61 #define PREFIX
  62 #endif
  63
  64 #ifdef SIMULATOR
  65 #if CONFIG_CODEC == SWCODEC
  66 unsigned char codecbuf[CODEC_SIZE];
  67 #endif
  68 void *sim_codec_load_ram(char* codecptr, int size, void **pd);
  69 void sim_codec_close(void *pd);
  70 #else
  71 #define sim_codec_close(x)
  72 #endif
  73
  74 size_t codec_size;
  75
  76 extern void* plugin_get_audio_buffer(size_t *buffer_size);
  77
  78 struct codec_api ci = {
  79
  80     0, /* filesize */
  81     0, /* curpos */
  82     NULL, /* id3 */
  83     NULL, /* taginfo_ready */
  84     false, /* stop_codec */
  85     0, /* new_track */
  86     0, /* seek_time */
  87     NULL, /* struct dsp_config *dsp */
  88     NULL, /* codec_get_buffer */
  89     NULL, /* pcmbuf_insert */
  90     NULL, /* set_elapsed */
  91     NULL, /* read_filebuf */
  92     NULL, /* request_buffer */
  93     NULL, /* advance_buffer */
  94     NULL, /* advance_buffer_loc */
  95     NULL, /* seek_buffer */
  96     NULL, /* seek_complete */
  97     NULL, /* request_next_track */
  98     NULL, /* discard_codec */
  99     NULL, /* set_offset */
 100     NULL, /* configure */
 101
 102     /* kernel/ system */
 103 #ifdef CPU_ARM
 104     __div0,
 105 #endif
 106     PREFIX(sleep),
 107     yield,
 108
 109 #if NUM_CORES > 1
 110     create_thread,
 111     thread_thaw,
 112     thread_wait,
 113     semaphore_init,
 114     semaphore_wait,
 115     semaphore_release,
 116 #endif
 117
 118 #if NUM_CORES > 1
 119     cpucache_flush,
 120     cpucache_invalidate,
 121 #endif
 122
 123     /* strings and memory */
 124     strcpy,
 125     strncpy,
 126     strlen,
 127     strcmp,
 128     strcat,
 129     memset,
 130     memcpy,
 131     memmove,
 132     memcmp,
 133     memchr,
 134     strcasestr,
 135 #if defined(DEBUG) || defined(SIMULATOR)
 136     debugf,
 137 #endif
 138 #ifdef ROCKBOX_HAS_LOGF
 139     logf,
 140 #endif
 141
 142     (qsort_func)qsort,
 143     &global_settings,
 144
 145 #ifdef RB_PROFILE
 146     profile_thread,
 147     profstop,
 148     __cyg_profile_func_enter,
 149     __cyg_profile_func_exit,
 150 #endif
 151
 152 #if defined(HAVE_RECORDING) && !defined(SIMULATOR)
 153     false,  /* stop_encoder */
 154     0,      /* enc_codec_loaded */
 155     enc_get_inputs,
 156     enc_set_parameters,
 157     enc_get_chunk,
 158     enc_finish_chunk,
 159     enc_get_pcm_data,
 160     enc_unget_pcm_data,
 161
 162     /* file */
 163     (open_func)PREFIX(open),
 164     close,
 165     (read_func)read,
 166     PREFIX(lseek),
 167     (write_func)write,
 168     round_value_to_list32,
 169
 170 #endif
 171
 172     /* new stuff at the end, sort into place next time
 173        the API gets incompatible */
 174 };
 175
 176 void codec_get_full_path(char *path, const char *codec_root_fn)
 177 {
 178     snprintf(path, MAX_PATH-1, CODECS_DIR "/%s." CODEC_EXTENSION,
 179              codec_root_fn);
 180 }
 181
 182 static int codec_load_ram(int size, struct codec_api *api)
 183 {
 184     struct codec_header *hdr;
 185     int status;
 186 #ifndef SIMULATOR
 187     hdr = (struct codec_header *)codecbuf;
 188
 189     if (size <= (signed)sizeof(struct codec_header)
 190         || (hdr->magic != CODEC_MAGIC
 191 #ifdef HAVE_RECORDING
 192              && hdr->magic != CODEC_ENC_MAGIC
 193 #endif
 194             )
 195         || hdr->target_id != TARGET_ID
 196         || hdr->load_addr != codecbuf
 197         || hdr->end_addr > codecbuf + CODEC_SIZE)
 198     {
 199         logf("codec header error");
 200         return CODEC_ERROR;
 201     }
 202
 203     codec_size = hdr->end_addr - codecbuf;
 204
 205 #else /* SIMULATOR */
 206     void *pd;
 207
 208     hdr = sim_codec_load_ram(codecbuf, size, &pd);
 209
 210     if (pd == NULL)
 211         return CODEC_ERROR;
 212
 213     if (hdr == NULL
 214         || (hdr->magic != CODEC_MAGIC
 215 #ifdef HAVE_RECORDING
 216              && hdr->magic != CODEC_ENC_MAGIC
 217 #endif
 218            )
 219         || hdr->target_id != TARGET_ID) {
 220         sim_codec_close(pd);
 221         return CODEC_ERROR;
 222     }
 223
 224     codec_size = codecbuf - codecbuf;
 225
 226 #endif /* SIMULATOR */
 227     if (hdr->api_version > CODEC_API_VERSION
 228         || hdr->api_version < CODEC_MIN_API_VERSION) {
 229         sim_codec_close(pd);
 230         return CODEC_ERROR;
 231     }
 232
 233     *(hdr->api) = api;
 234     cpucache_invalidate();
 235     status = hdr->entry_point();
 236
 237     sim_codec_close(pd);
 238
 239     return status;
 240 }
 241
 242 int codec_load_buf(unsigned int hid, struct codec_api *api)
 243 {
 244     int rc;
 245     rc = bufread(hid, CODEC_SIZE, codecbuf);
 246     if (rc < 0) {
 247         logf("error loading codec");
 248         return CODEC_ERROR;
 249     }
 250     api->discard_codec();
 251     return codec_load_ram(rc, api);
 252 }
 253
 254 int codec_load_file(const char *plugin, struct codec_api *api)
 255 {
 256     char path[MAX_PATH];
 257     int fd;
 258     int rc;
 259
 260     codec_get_full_path(path, plugin);
 261
 262     fd = open(path, O_RDONLY);
 263     if (fd < 0) {
 264         logf("Codec load error:%d", fd);
 265         splashf(HZ*2, "Couldn't load codec: %s", path);
 266         return fd;
 267     }
 268
 269     rc = read(fd, &codecbuf[0], CODEC_SIZE);
 270     close(fd);
 271     if (rc <= 0) {
 272         logf("Codec read error");
 273         return CODEC_ERROR;
 274     }
 275
 276     return codec_load_ram((size_t)rc, api);
 277 }