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 extern unsigned char codecbuf[];
  73 #endif
  74
  75 size_t codec_size;
  76
  77 extern void* plugin_get_audio_buffer(size_t *buffer_size);
  78
  79 struct codec_api ci = {
  80
  81     0, /* filesize */
  82     0, /* curpos */
  83     NULL, /* id3 */
  84     NULL, /* taginfo_ready */
  85     false, /* stop_codec */
  86     0, /* new_track */
  87     0, /* seek_time */
  88     NULL, /* struct dsp_config *dsp */
  89     NULL, /* codec_get_buffer */
  90     NULL, /* pcmbuf_insert */
  91     NULL, /* set_elapsed */
  92     NULL, /* read_filebuf */
  93     NULL, /* request_buffer */
  94     NULL, /* advance_buffer */
  95     NULL, /* advance_buffer_loc */
  96     NULL, /* seek_buffer */
  97     NULL, /* seek_complete */
  98     NULL, /* request_next_track */
  99     NULL, /* discard_codec */
 100     NULL, /* set_offset */
 101     NULL, /* configure */
 102
 103     /* kernel/ system */
 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 #ifdef CACHE_FUNCTIONS_AS_CALL
 117     flush_icache,
 118     invalidate_icache,
 119 #endif
 120
 121     /* strings and memory */
 122     strcpy,
 123     strncpy,
 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
 175 void codec_get_full_path(char *path, const char *codec_root_fn)
 176 {
 177     snprintf(path, MAX_PATH-1, CODECS_DIR "/%s." CODEC_EXTENSION,
 178              codec_root_fn);
 179 }
 180
 181 static int codec_load_ram(int size, struct codec_api *api)
 182 {
 183     struct codec_header *hdr;
 184     int status;
 185 #ifndef SIMULATOR
 186     hdr = (struct codec_header *)codecbuf;
 187
 188     if (size <= (signed)sizeof(struct codec_header)
 189         || (hdr->magic != CODEC_MAGIC
 190 #ifdef HAVE_RECORDING
 191              && hdr->magic != CODEC_ENC_MAGIC
 192 #endif
 193             )
 194         || hdr->target_id != TARGET_ID
 195         || hdr->load_addr != codecbuf
 196         || hdr->end_addr > codecbuf + CODEC_SIZE)
 197     {
 198         logf("codec header error");
 199         return CODEC_ERROR;
 200     }
 201
 202     codec_size = hdr->end_addr - codecbuf;
 203
 204 #else /* SIMULATOR */
 205     void *pd;
 206
 207     hdr = sim_codec_load_ram(codecbuf, size, &pd);
 208
 209     if (pd == NULL)
 210         return CODEC_ERROR;
 211
 212     if (hdr == NULL
 213         || (hdr->magic != CODEC_MAGIC
 214 #ifdef HAVE_RECORDING
 215              && hdr->magic != CODEC_ENC_MAGIC
 216 #endif
 217            )
 218         || hdr->target_id != TARGET_ID) {
 219         sim_codec_close(pd);
 220         return CODEC_ERROR;
 221     }
 222
 223     codec_size = codecbuf - codecbuf;
 224
 225 #endif /* SIMULATOR */
 226     if (hdr->api_version > CODEC_API_VERSION
 227         || hdr->api_version < CODEC_MIN_API_VERSION) {
 228         sim_codec_close(pd);
 229         return CODEC_ERROR;
 230     }
 231
 232     *(hdr->api) = api;
 233     invalidate_icache();
 234     status = hdr->entry_point();
 235
 236     sim_codec_close(pd);
 237
 238     return status;
 239 }
 240
 241 int codec_load_buf(unsigned int hid, struct codec_api *api)
 242 {
 243     int rc;
 244     rc = bufread(hid, CODEC_SIZE, codecbuf);
 245     if (rc < 0) {
 246         logf("error loading codec");
 247         return CODEC_ERROR;
 248     }
 249     api->discard_codec();
 250     return codec_load_ram(rc, api);
 251 }
 252
 253 int codec_load_file(const char *plugin, struct codec_api *api)
 254 {
 255     char path[MAX_PATH];
 256     int fd;
 257     int rc;
 258
 259     codec_get_full_path(path, plugin);
 260
 261     fd = open(path, O_RDONLY);
 262     if (fd < 0) {
 263         logf("Codec load error:%d", fd);
 264         splashf(HZ*2, "Couldn't load codec: %s", path);
 265         return fd;
 266     }
 267
 268     rc = read(fd, &codecbuf[0], CODEC_SIZE);
 269     close(fd);
 270     if (rc <= 0) {
 271         logf("Codec read error");
 272         return CODEC_ERROR;
 273     }
 274
 275     return codec_load_ram((size_t)rc, api);
 276 }