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