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 "ata.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     event_init,
 109     event_wait,
 110     event_set_state,
 111 #endif
 112
 113 #ifdef CACHE_FUNCTIONS_AS_CALL
 114     flush_icache,
 115     invalidate_icache,
 116 #endif
 117
 118     /* strings and memory */
 119     strcpy,
 120     strncpy,
 121     strlen,
 122     strcmp,
 123     strcat,
 124     memset,
 125     memcpy,
 126     memmove,
 127     memcmp,
 128     memchr,
 129     strcasestr,
 130 #if defined(DEBUG) || defined(SIMULATOR)
 131     debugf,
 132 #endif
 133 #ifdef ROCKBOX_HAS_LOGF
 134     logf,
 135 #endif
 136
 137     (qsort_func)qsort,
 138     &global_settings,
 139
 140 #ifdef RB_PROFILE
 141     profile_thread,
 142     profstop,
 143     __cyg_profile_func_enter,
 144     __cyg_profile_func_exit,
 145 #endif
 146
 147 #if defined(HAVE_RECORDING) && !defined(SIMULATOR)
 148     false,  /* stop_encoder */
 149     0,      /* enc_codec_loaded */
 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     close,
 160     (read_func)read,
 161     PREFIX(lseek),
 162     (write_func)write,
 163     round_value_to_list32,
 164
 165 #endif
 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 "/%s." CODEC_EXTENSION,
 175              codec_root_fn);
 176 }
 177
 178 static int codec_load_ram(int size, struct codec_api *api)
 179 {
 180     struct codec_header *hdr;
 181     int status;
 182 #ifndef SIMULATOR
 183     hdr = (struct codec_header *)codecbuf;
 184
 185     if (size <= (signed)sizeof(struct codec_header)
 186         || (hdr->magic != CODEC_MAGIC
 187 #ifdef HAVE_RECORDING
 188              && hdr->magic != CODEC_ENC_MAGIC
 189 #endif
 190             )
 191         || hdr->target_id != TARGET_ID
 192         || hdr->load_addr != codecbuf
 193         || hdr->end_addr > codecbuf + CODEC_SIZE)
 194     {
 195         logf("codec header error");
 196         return CODEC_ERROR;
 197     }
 198
 199     codec_size = hdr->end_addr - codecbuf;
 200
 201 #else /* SIMULATOR */
 202     void *pd;
 203
 204     hdr = sim_codec_load_ram(codecbuf, size, &pd);
 205
 206     if (pd == NULL)
 207         return CODEC_ERROR;
 208
 209     if (hdr == NULL
 210         || (hdr->magic != CODEC_MAGIC
 211 #ifdef HAVE_RECORDING
 212              && hdr->magic != CODEC_ENC_MAGIC
 213 #endif
 214            )
 215         || hdr->target_id != TARGET_ID) {
 216         sim_codec_close(pd);
 217         return CODEC_ERROR;
 218     }
 219
 220     codec_size = codecbuf - codecbuf;
 221
 222 #endif /* SIMULATOR */
 223     if (hdr->api_version > CODEC_API_VERSION
 224         || hdr->api_version < CODEC_MIN_API_VERSION) {
 225         sim_codec_close(pd);
 226         return CODEC_ERROR;
 227     }
 228
 229     invalidate_icache();
 230     status = hdr->entry_point(api);
 231
 232     sim_codec_close(pd);
 233
 234     return status;
 235 }
 236
 237 int codec_load_buf(unsigned int hid, struct codec_api *api)
 238 {
 239     int rc;
 240     rc = bufread(hid, CODEC_SIZE, codecbuf);
 241     if (rc < 0) {
 242         logf("error loading codec");
 243         return CODEC_ERROR;
 244     }
 245     api->discard_codec();
 246     return codec_load_ram(rc, api);
 247 }
 248
 249 int codec_load_file(const char *plugin, struct codec_api *api)
 250 {
 251     char path[MAX_PATH];
 252     int fd;
 253     int rc;
 254
 255     codec_get_full_path(path, plugin);
 256
 257     fd = open(path, O_RDONLY);
 258     if (fd < 0) {
 259         logf("Codec load error:%d", fd);
 260         splashf(HZ*2, "Couldn't load codec: %s", path);
 261         return fd;
 262     }
 263
 264     rc = read(fd, &codecbuf[0], CODEC_SIZE);
 265     close(fd);
 266     if (rc <= 0) {
 267         logf("Codec read error");
 268         return CODEC_ERROR;
 269     }
 270
 271     return codec_load_ram((size_t)rc, api);
 272 }