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 <atoi.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 "playback.h"
  44 #include "backlight.h"
  45 #include "ata.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
  54 #define LOGF_ENABLE
  55 #include "logf.h"
  56
  57 #ifdef SIMULATOR
  58 #if CONFIG_CODEC == SWCODEC
  59 unsigned char codecbuf[CODEC_SIZE];
  60 #endif
  61 void *sim_codec_load_ram(char* codecptr, int size, void **pd);
  62 void sim_codec_close(void *pd);
  63 #else
  64 #define sim_codec_close(x)
  65 extern unsigned char codecbuf[];
  66 #endif
  67
  68 extern void* plugin_get_audio_buffer(size_t *buffer_size);
  69
  70 struct codec_api ci = {
  71
  72     0, /* filesize */
  73     0, /* curpos */
  74     NULL, /* id3 */
  75     NULL, /* taginfo_ready */
  76     false, /* stop_codec */
  77     0, /* new_track */
  78     0, /* seek_time */
  79     NULL, /* struct dsp_config *dsp */
  80     NULL, /* get_codec_memory */
  81     NULL, /* pcmbuf_insert */
  82     NULL, /* set_elapsed */
  83     NULL, /* read_filebuf */
  84     NULL, /* request_buffer */
  85     NULL, /* advance_buffer */
  86     NULL, /* advance_buffer_loc */
  87     NULL, /* seek_buffer */
  88     NULL, /* seek_complete */
  89     NULL, /* request_next_track */
  90     NULL, /* discard_codec */
  91     NULL, /* set_offset */
  92     NULL, /* configure */
  93
  94     /* kernel/ system */
  95     PREFIX(sleep),
  96     yield,
  97
  98 #if NUM_CORES > 1
  99     create_thread,
 100     thread_thaw,
 101     thread_wait,
 102     semaphore_init,
 103     semaphore_wait,
 104     semaphore_release,
 105     event_init,
 106     event_wait,
 107     event_set_state,
 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
 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     profile_func_enter,
 141     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 #else /* SIMULATOR */
 196     void *pd;
 197
 198     hdr = sim_codec_load_ram(codecbuf, size, &pd);
 199
 200     if (pd == NULL)
 201         return CODEC_ERROR;
 202
 203     if (hdr == NULL
 204         || (hdr->magic != CODEC_MAGIC
 205 #ifdef HAVE_RECORDING
 206              && hdr->magic != CODEC_ENC_MAGIC
 207 #endif
 208            )
 209         || hdr->target_id != TARGET_ID) {
 210         sim_codec_close(pd);
 211         return CODEC_ERROR;
 212     }
 213 #endif /* SIMULATOR */
 214     if (hdr->api_version > CODEC_API_VERSION
 215         || hdr->api_version < CODEC_MIN_API_VERSION) {
 216         sim_codec_close(pd);
 217         return CODEC_ERROR;
 218     }
 219
 220     invalidate_icache();
 221     status = hdr->entry_point(api);
 222
 223     sim_codec_close(pd);
 224
 225     return status;
 226 }
 227
 228 int codec_load_buf(unsigned int hid, struct codec_api *api) {
 229     int rc;
 230     rc = bufread(hid, CODEC_SIZE, codecbuf);
 231     if (rc < 0) {
 232         logf("error loading codec");
 233         return CODEC_ERROR;
 234     }
 235     api->discard_codec();
 236     return codec_load_ram(rc, api);
 237 }
 238
 239 int codec_load_file(const char *plugin, struct codec_api *api)
 240 {
 241     char msgbuf[80];
 242     char path[MAX_PATH];
 243     int fd;
 244     int rc;
 245
 246     codec_get_full_path(path, plugin);
 247
 248     fd = open(path, O_RDONLY);
 249     if (fd < 0) {
 250         snprintf(msgbuf, sizeof(msgbuf)-1, "Couldn't load codec: %s", path);
 251         logf("Codec load error:%d", fd);
 252         gui_syncsplash(HZ*2, msgbuf);
 253         return fd;
 254     }
 255
 256     rc = read(fd, &codecbuf[0], CODEC_SIZE);
 257     close(fd);
 258     if (rc <= 0) {
 259         logf("Codec read error");
 260         return CODEC_ERROR;
 261     }
 262
 263     return codec_load_ram((size_t)rc, api);
 264 }