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 "logf.h"
  34 #include "screens.h"
  35 #include "misc.h"
  36 #include "mas.h"
  37 #include "codecs.h"
  38 #include "lang.h"
  39 #include "keyboard.h"
  40 #include "mpeg.h"
  41 #include "buffer.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 #ifdef SIMULATOR
  55 #if CONFIG_CODEC == SWCODEC
  56 unsigned char codecbuf[CODEC_SIZE];
  57 #endif
  58 void *sim_codec_load_ram(char* codecptr, int size,
  59         void* ptr2, int bufwrap, void **pd);
  60 void sim_codec_close(void *pd);
  61 #else
  62 #define sim_codec_close(x)
  63 extern unsigned char codecbuf[];
  64 #endif
  65
  66 extern void* plugin_get_audio_buffer(size_t *buffer_size);
  67
  68 struct codec_api ci_voice;
  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, /* 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, /* mp3_get_filepos */
  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     /* strings and memory */
  99     strcpy,
 100     strncpy,
 101     strlen,
 102     strcmp,
 103     strcat,
 104     memset,
 105     memcpy,
 106     memmove,
 107     memcmp,
 108     memchr,
 109
 110 #if defined(DEBUG) || defined(SIMULATOR)
 111     debugf,
 112 #endif
 113 #ifdef ROCKBOX_HAS_LOGF
 114     logf,
 115 #endif
 116
 117     (qsort_func)qsort,
 118     &global_settings,
 119
 120 #ifdef RB_PROFILE
 121     profile_thread,
 122     profstop,
 123     profile_func_enter,
 124     profile_func_exit,
 125 #endif
 126
 127 #if defined(HAVE_RECORDING) && !defined(SIMULATOR)
 128     false,  /* stop_encoder */
 129     0,      /* enc_codec_loaded */
 130     enc_get_inputs,
 131     enc_set_parameters,
 132     enc_get_chunk,
 133     enc_finish_chunk,
 134     enc_pcm_buf_near_empty,
 135     enc_get_pcm_data,
 136     enc_unget_pcm_data,
 137
 138     /* file */
 139     (open_func)PREFIX(open),
 140     close,
 141     (read_func)read,
 142     PREFIX(lseek),
 143     (write_func)write,
 144
 145 #ifdef HAVE_ADJUSTABLE_CPU_FREQ
 146 #ifdef CPU_BOOST_LOGGING
 147     cpu_boost_,
 148 #else
 149     cpu_boost,
 150 #endif
 151 #endif
 152
 153     round_value_to_list32,
 154
 155 #endif
 156
 157     /* new stuff at the end, sort into place next time
 158        the API gets incompatible */
 159
 160 };
 161
 162 void codec_get_full_path(char *path, const char *codec_root_fn)
 163 {
 164     snprintf(path, MAX_PATH-1, CODECS_DIR "/%s." CODEC_EXTENSION,
 165              codec_root_fn);
 166 }
 167
 168 int codec_load_ram(char* codecptr, int size, void* ptr2, int bufwrap,
 169                    struct codec_api *api)
 170 {
 171     struct codec_header *hdr;
 172     int status;
 173 #ifndef SIMULATOR
 174     int copy_n;
 175
 176     if ((char *)&codecbuf[0] != codecptr) {
 177         size = MIN(size, CODEC_SIZE);
 178         copy_n = MIN(size, bufwrap);
 179         memcpy(codecbuf, codecptr, copy_n);
 180         if (size - copy_n > 0) {
 181             memcpy(&codecbuf[copy_n], ptr2, size - copy_n);
 182         }
 183         api->discard_codec();
 184     }
 185     hdr = (struct codec_header *)codecbuf;
 186
 187     if (size <= (signed)sizeof(struct codec_header)
 188         || (hdr->magic != CODEC_MAGIC
 189 #ifdef HAVE_RECORDING
 190              && hdr->magic != CODEC_ENC_MAGIC
 191 #endif
 192             )
 193         || hdr->target_id != TARGET_ID
 194         || hdr->load_addr != codecbuf
 195         || hdr->end_addr > codecbuf + CODEC_SIZE)
 196     {
 197         logf("codec header error");
 198         return CODEC_ERROR;
 199     }
 200 #else /* SIMULATOR */
 201     void *pd;
 202
 203     hdr = sim_codec_load_ram(codecptr, size, ptr2, bufwrap, &pd);
 204     api->discard_codec();
 205
 206     if (pd == NULL)
 207         return CODEC_ERROR;
 208
 209     if (hdr == NULL
 210         || hdr->magic != CODEC_MAGIC
 211         || hdr->target_id != TARGET_ID) {
 212         sim_codec_close(pd);
 213         return CODEC_ERROR;
 214     }
 215 #endif /* SIMULATOR */
 216     if (hdr->api_version > CODEC_API_VERSION
 217         || hdr->api_version < CODEC_MIN_API_VERSION) {
 218         sim_codec_close(pd);
 219         return CODEC_ERROR;
 220     }
 221
 222     invalidate_icache();
 223     status = hdr->entry_point(api);
 224
 225     sim_codec_close(pd);
 226
 227     return status;
 228 }
 229
 230 int codec_load_file(const char *plugin, struct codec_api *api)
 231 {
 232     char msgbuf[80];
 233     char path[MAX_PATH];
 234     int fd;
 235     int rc;
 236
 237     codec_get_full_path(path, plugin);
 238
 239     fd = open(path, O_RDONLY);
 240     if (fd < 0) {
 241         snprintf(msgbuf, sizeof(msgbuf)-1, "Couldn't load codec: %s", path);
 242         logf("Codec load error:%d", fd);
 243         gui_syncsplash(HZ*2, msgbuf);
 244         return fd;
 245     }
 246
 247     rc = read(fd, &codecbuf[0], CODEC_SIZE);
 248     close(fd);
 249     if (rc <= 0) {
 250         logf("Codec read error");
 251         return CODEC_ERROR;
 252     }
 253
 254     return codec_load_ram(codecbuf, (size_t)rc, NULL, 0, api);
 255 }