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  * All files in this archive are subject to the GNU General Public License.
  13  * See the file COPYING in the source tree root for full license agreement.
  14  *
  15  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  16  * KIND, either express or implied.
  17  *
  18  ****************************************************************************/
  19 #include "config.h"
  20
  21 #include <stdbool.h>
  22 #include <string.h>
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <timefuncs.h>
  26 #include <ctype.h>
  27 #include "debug.h"
  28 #include "button.h"
  29 #include "dir.h"
  30 #include "file.h"
  31 #include "kernel.h"
  32 #include "sprintf.h"
  33 #include "screens.h"
  34 #include "misc.h"
  35 #include "mas.h"
  36 #include "codecs.h"
  37 #include "lang.h"
  38 #include "keyboard.h"
  39 #include "mpeg.h"
  40 #include "buffer.h"
  41 #include "buffering.h"
  42 #include "mp3_playback.h"
  43 #include "backlight.h"
  44 #include "ata.h"
  45 #include "talk.h"
  46 #include "mp3data.h"
  47 #include "powermgmt.h"
  48 #include "system.h"
  49 #include "sound.h"
  50 #include "splash.h"
  51 #include "general.h"
  52
  53 #define LOGF_ENABLE
  54 #include "logf.h"
  55
  56 #ifdef SIMULATOR
  57 #if CONFIG_CODEC == SWCODEC
  58 unsigned char codecbuf[CODEC_SIZE];
  59 #endif
  60 void *sim_codec_load_ram(char* codecptr, int size, void **pd);
  61 void sim_codec_close(void *pd);
  62 #else
  63 #define sim_codec_close(x)
  64 extern unsigned char codecbuf[];
  65 #endif
  66
  67 extern void* plugin_get_audio_buffer(size_t *buffer_size);
  68
  69 struct codec_api ci = {
  70
  71     0, /* filesize */
  72     0, /* curpos */
  73     NULL, /* id3 */
  74     NULL, /* taginfo_ready */
  75     false, /* stop_codec */
  76     0, /* new_track */
  77     0, /* seek_time */
  78     NULL, /* struct dsp_config *dsp */
  79     NULL, /* get_codec_memory */
  80     NULL, /* pcmbuf_insert */
  81     NULL, /* set_elapsed */
  82     NULL, /* read_filebuf */
  83     NULL, /* request_buffer */
  84     NULL, /* advance_buffer */
  85     NULL, /* advance_buffer_loc */
  86     NULL, /* seek_buffer */
  87     NULL, /* seek_complete */
  88     NULL, /* request_next_track */
  89     NULL, /* discard_codec */
  90     NULL, /* set_offset */
  91     NULL, /* configure */
  92
  93     /* kernel/ system */
  94     PREFIX(sleep),
  95     yield,
  96
  97 #if NUM_CORES > 1
  98     create_thread,
  99     thread_thaw,
 100     thread_wait,
 101     semaphore_init,
 102     semaphore_wait,
 103     semaphore_release,
 104     event_init,
 105     event_wait,
 106     event_set_state,
 107 #endif
 108
 109 #ifdef CACHE_FUNCTIONS_AS_CALL
 110     flush_icache,
 111     invalidate_icache,
 112 #endif
 113
 114     /* strings and memory */
 115     strcpy,
 116     strncpy,
 117     strlen,
 118     strcmp,
 119     strcat,
 120     memset,
 121     memcpy,
 122     memmove,
 123     memcmp,
 124     memchr,
 125
 126 #if defined(DEBUG) || defined(SIMULATOR)
 127     debugf,
 128 #endif
 129 #ifdef ROCKBOX_HAS_LOGF
 130     logf,
 131 #endif
 132
 133     (qsort_func)qsort,
 134     &global_settings,
 135
 136 #ifdef RB_PROFILE
 137     profile_thread,
 138     profstop,
 139     profile_func_enter,
 140     profile_func_exit,
 141 #endif
 142
 143 #if defined(HAVE_RECORDING) && !defined(SIMULATOR)
 144     false,  /* stop_encoder */
 145     0,      /* enc_codec_loaded */
 146     enc_get_inputs,
 147     enc_set_parameters,
 148     enc_get_chunk,
 149     enc_finish_chunk,
 150     enc_get_pcm_data,
 151     enc_unget_pcm_data,
 152
 153     /* file */
 154     (open_func)PREFIX(open),
 155     close,
 156     (read_func)read,
 157     PREFIX(lseek),
 158     (write_func)write,
 159     round_value_to_list32,
 160
 161 #endif
 162
 163     /* new stuff at the end, sort into place next time
 164        the API gets incompatible */
 165
 166 };
 167
 168 void codec_get_full_path(char *path, const char *codec_root_fn)
 169 {
 170     snprintf(path, MAX_PATH-1, CODECS_DIR "/%s." CODEC_EXTENSION,
 171              codec_root_fn);
 172 }
 173
 174 static int codec_load_ram(int size, struct codec_api *api)
 175 {
 176     struct codec_header *hdr;
 177     int status;
 178 #ifndef SIMULATOR
 179     hdr = (struct codec_header *)codecbuf;
 180
 181     if (size <= (signed)sizeof(struct codec_header)
 182         || (hdr->magic != CODEC_MAGIC
 183 #ifdef HAVE_RECORDING
 184              && hdr->magic != CODEC_ENC_MAGIC
 185 #endif
 186             )
 187         || hdr->target_id != TARGET_ID
 188         || hdr->load_addr != codecbuf
 189         || hdr->end_addr > codecbuf + CODEC_SIZE)
 190     {
 191         logf("codec header error");
 192         return CODEC_ERROR;
 193     }
 194 #else /* SIMULATOR */
 195     void *pd;
 196
 197     hdr = sim_codec_load_ram(codecbuf, size, &pd);
 198
 199     if (pd == NULL)
 200         return CODEC_ERROR;
 201
 202     if (hdr == NULL
 203         || (hdr->magic != CODEC_MAGIC
 204 #ifdef HAVE_RECORDING
 205              && hdr->magic != CODEC_ENC_MAGIC
 206 #endif
 207            )
 208         || hdr->target_id != TARGET_ID) {
 209         sim_codec_close(pd);
 210         return CODEC_ERROR;
 211     }
 212 #endif /* SIMULATOR */
 213     if (hdr->api_version > CODEC_API_VERSION
 214         || hdr->api_version < CODEC_MIN_API_VERSION) {
 215         sim_codec_close(pd);
 216         return CODEC_ERROR;
 217     }
 218
 219     invalidate_icache();
 220     status = hdr->entry_point(api);
 221
 222     sim_codec_close(pd);
 223
 224     return status;
 225 }
 226
 227 int codec_load_buf(unsigned int hid, struct codec_api *api) {
 228     int rc;
 229     rc = bufread(hid, CODEC_SIZE, codecbuf);
 230     if (rc < 0) {
 231         logf("error loading codec");
 232         return CODEC_ERROR;
 233     }
 234     api->discard_codec();
 235     return codec_load_ram(rc, api);
 236 }
 237
 238 int codec_load_file(const char *plugin, struct codec_api *api)
 239 {
 240     char msgbuf[80];
 241     char path[MAX_PATH];
 242     int fd;
 243     int rc;
 244
 245     codec_get_full_path(path, plugin);
 246
 247     fd = open(path, O_RDONLY);
 248     if (fd < 0) {
 249         snprintf(msgbuf, sizeof(msgbuf)-1, "Couldn't load codec: %s", path);
 250         logf("Codec load error:%d", fd);
 251         gui_syncsplash(HZ*2, msgbuf);
 252         return fd;
 253     }
 254
 255     rc = read(fd, &codecbuf[0], CODEC_SIZE);
 256     close(fd);
 257     if (rc <= 0) {
 258         logf("Codec read error");
 259         return CODEC_ERROR;
 260     }
 261
 262     return codec_load_ram((size_t)rc, api);
 263 }