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 <stdarg.h>
  30 #include "string-extra.h"
  31 #include "load_code.h"
  32 #include "debug.h"
  33 #include "button.h"
  34 #include "dir.h"
  35 #include "file.h"
  36 #include "kernel.h"
  37 #include "screens.h"
  38 #include "misc.h"
  39 #include "codecs.h"
  40 #include "lang.h"
  41 #include "keyboard.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 #include "rbpaths.h"
  54
  55 #define LOGF_ENABLE
  56 #include "logf.h"
  57
  58 #if (CONFIG_PLATFORM & (PLATFORM_SDL|PLATFORM_MAEMO|PLATFORM_PANDORA))
  59 #define PREFIX(_x_) sim_ ## _x_
  60 #else
  61 #define PREFIX(_x_) _x_
  62 #endif
  63
  64 #if (CONFIG_PLATFORM & PLATFORM_HOSTED)
  65 /* For PLATFORM_HOSTED this buffer must be define here. */
  66 static unsigned char codecbuf[CODEC_SIZE];
  67 #else
  68 /* For PLATFORM_NATIVE this buffer is defined in *.lds files. */
  69 extern unsigned char codecbuf[];
  70 #endif
  71
  72 static size_t codec_size;
  73
  74 extern void* plugin_get_audio_buffer(size_t *buffer_size);
  75
  76 #if (CONFIG_PLATFORM & PLATFORM_NATIVE) && defined(HAVE_RECORDING)
  77 #undef open
  78 static int open(const char* pathname, int flags, ...)
  79 {
  80     return file_open(pathname, flags);
  81 }
  82 #endif
  83 struct codec_api ci = {
  84
  85     0,    /* filesize */
  86     0,    /* curpos */
  87     NULL, /* id3 */
  88     ERR_HANDLE_NOT_FOUND, /* audio_hid */
  89     NULL, /* struct dsp_config *dsp */
  90     NULL, /* codec_get_buffer */
  91     NULL, /* pcmbuf_insert */
  92     NULL, /* set_elapsed */
  93     NULL, /* read_filebuf */
  94     NULL, /* request_buffer */
  95     NULL, /* advance_buffer */
  96     NULL, /* seek_buffer */
  97     NULL, /* seek_complete */
  98     NULL, /* set_offset */
  99     NULL, /* configure */
 100     NULL, /* get_command */
 101     NULL, /* loop_track */
 102
 103     /* kernel/ system */
 104 #if defined(CPU_ARM) && CONFIG_PLATFORM & PLATFORM_NATIVE
 105     __div0,
 106 #endif
 107     sleep,
 108     yield,
 109
 110 #if NUM_CORES > 1
 111     create_thread,
 112     thread_thaw,
 113     thread_wait,
 114     semaphore_init,
 115     semaphore_wait,
 116     semaphore_release,
 117 #endif
 118
 119     commit_dcache,
 120     commit_discard_dcache,
 121     commit_discard_idcache,
 122
 123     /* strings and memory */
 124     strcpy,
 125     strlen,
 126     strcmp,
 127     strcat,
 128     memset,
 129     memcpy,
 130     memmove,
 131     memcmp,
 132     memchr,
 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
 142 #ifdef RB_PROFILE
 143     profile_thread,
 144     profstop,
 145     __cyg_profile_func_enter,
 146     __cyg_profile_func_exit,
 147 #endif
 148
 149 #ifdef HAVE_RECORDING
 150     enc_get_inputs,
 151     enc_set_parameters,
 152     enc_get_chunk,
 153     enc_finish_chunk,
 154     enc_get_pcm_data,
 155     enc_unget_pcm_data,
 156
 157     /* file */
 158     (open_func)PREFIX(open),
 159     PREFIX(close),
 160     (read_func)PREFIX(read),
 161     PREFIX(lseek),
 162     (write_func)PREFIX(write),
 163     round_value_to_list32,
 164
 165 #endif /* HAVE_RECORDING */
 166
 167     /* new stuff at the end, sort into place next time
 168        the API gets incompatible */
 169
 170 };
 171
 172 void codec_get_full_path(char *path, const char *codec_root_fn)
 173 {
 174     snprintf(path, MAX_PATH-1, CODECS_DIR "/" CODEC_PREFIX "%s."
 175             CODEC_EXTENSION, codec_root_fn);
 176 }
 177
 178 /* Returns pointer to and size of free codec RAM. Aligns to CACHEALIGN_SIZE. */
 179 void *codec_get_buffer_callback(size_t *size)
 180 {
 181     void *buf = &codecbuf[codec_size];
 182     ssize_t s = CODEC_SIZE - codec_size;
 183
 184     if (s <= 0)
 185         return NULL;
 186
 187     *size = s;
 188     ALIGN_BUFFER(buf, *size, CACHEALIGN_SIZE);
 189
 190     return buf;
 191 }
 192
 193 /** codec loading and call interface **/
 194 static void *curr_handle = NULL;
 195 static struct codec_header *c_hdr = NULL;
 196
 197 static int codec_load_ram(struct codec_api *api)
 198 {
 199     struct lc_header *hdr;
 200
 201     c_hdr = lc_get_header(curr_handle);
 202     hdr   = c_hdr ? &c_hdr->lc_hdr : NULL;
 203
 204     if (hdr == NULL
 205         || (hdr->magic != CODEC_MAGIC
 206 #ifdef HAVE_RECORDING
 207              && hdr->magic != CODEC_ENC_MAGIC
 208 #endif
 209             )
 210         || hdr->target_id != TARGET_ID
 211 #if (CONFIG_PLATFORM & PLATFORM_NATIVE)
 212         || hdr->load_addr != codecbuf
 213         || hdr->end_addr > codecbuf + CODEC_SIZE
 214 #endif
 215         )
 216     {
 217         logf("codec header error");
 218         lc_close(curr_handle);
 219         curr_handle = NULL;
 220         return CODEC_ERROR;
 221     }
 222
 223     if (hdr->api_version > CODEC_API_VERSION
 224         || hdr->api_version < CODEC_MIN_API_VERSION) {
 225         logf("codec api version error");
 226         lc_close(curr_handle);
 227         curr_handle = NULL;
 228         return CODEC_ERROR;
 229     }
 230
 231 #if (CONFIG_PLATFORM & PLATFORM_NATIVE)
 232     codec_size = hdr->end_addr - codecbuf;
 233 #else
 234     codec_size = 0;
 235 #endif
 236
 237     *(c_hdr->api) = api;
 238
 239     logf("Codec: calling entrypoint");
 240     return c_hdr->entry_point(CODEC_LOAD);
 241 }
 242
 243 int codec_load_buf(int hid, struct codec_api *api)
 244 {
 245     int rc = bufread(hid, CODEC_SIZE, codecbuf);
 246
 247     if (rc < 0) {
 248         logf("Codec: cannot read buf handle");
 249         return CODEC_ERROR;
 250     }
 251
 252     curr_handle = lc_open_from_mem(codecbuf, rc);
 253
 254     if (curr_handle == NULL) {
 255         logf("Codec: load error");
 256         return CODEC_ERROR;
 257     }
 258
 259     return codec_load_ram(api);
 260 }
 261
 262 int codec_load_file(const char *plugin, struct codec_api *api)
 263 {
 264     char path[MAX_PATH];
 265
 266     codec_get_full_path(path, plugin);
 267
 268     curr_handle = lc_open(path, codecbuf, CODEC_SIZE);
 269
 270     if (curr_handle == NULL) {
 271         logf("Codec: cannot read file");
 272         return CODEC_ERROR;
 273     }
 274
 275     return codec_load_ram(api);
 276 }
 277
 278 int codec_run_proc(void)
 279 {
 280     if (curr_handle == NULL) {
 281         logf("Codec: no codec to run");
 282         return CODEC_ERROR;
 283     }
 284
 285     logf("Codec: entering run state");
 286     return c_hdr->run_proc();
 287 }
 288
 289 int codec_close(void)
 290 {
 291     int status = CODEC_OK;
 292
 293     if (curr_handle != NULL) {
 294         logf("Codec: cleaning up");
 295         status = c_hdr->entry_point(CODEC_UNLOAD);
 296         lc_close(curr_handle);
 297         curr_handle = NULL;
 298     }
 299
 300     return status;
 301 }