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