/*************************************************************************** * __________ __ ___. * Open \______ \ ____ ____ | | _\_ |__ _______ ___ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ * \/ \/ \/ \/ \/ * $Id$ * * Copyright (C) 2002 Björn Stenberg * * All files in this archive are subject to the GNU General Public License. * See the file COPYING in the source tree root for full license agreement. * * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY * KIND, either express or implied. * ****************************************************************************/ #ifndef _CODECS_H_ #define _CODECS_H_ /* instruct simulator code to not redefine any symbols when compiling codecs. (the CODEC macro is defined in apps/codecs/Makefile) */ #ifdef CODEC #define NO_REDEFINES_PLEASE #endif #ifndef MEM #define MEM 2 #endif #include #include #include #include #include "config.h" #include "dir.h" #include "kernel.h" #include "font.h" #include "system.h" #include "id3.h" #include "mpeg.h" #include "audio.h" #include "mp3_playback.h" #ifdef RB_PROFILE #include "profile.h" #endif #if (CONFIG_CODEC == SWCODEC) #include "dsp.h" #include "playback.h" #endif #include "settings.h" #include "thread.h" #include "playlist.h" #include "sound.h" #ifdef CODEC #if defined(DEBUG) || defined(SIMULATOR) #undef DEBUGF #define DEBUGF rb->debugf #undef LDEBUGF #define LDEBUGF rb->debugf #else #define DEBUGF(...) #define LDEBUGF(...) #endif #ifdef ROCKBOX_HAS_LOGF #undef LOGF #define LOGF rb->logf #else #define LOGF(...) #endif #endif #ifdef SIMULATOR #define PREFIX(_x_) sim_ ## _x_ #else #define PREFIX(_x_) _x_ #endif #define CODEC_MAGIC 0x52434F44 /* RCOD */ /* increase this every time the api struct changes */ #define CODEC_API_VERSION 8 /* update this to latest version if a change to the api struct breaks backwards compatibility (and please take the opportunity to sort in any new function which are "waiting" at the end of the function table) */ #define CODEC_MIN_API_VERSION 8 /* codec return codes */ enum codec_status { CODEC_OK = 0, CODEC_USB_CONNECTED, CODEC_ERROR = -1, }; /* NOTE: To support backwards compatibility, only add new functions at the end of the structure. Every time you add a new function, remember to increase CODEC_API_VERSION. If you make changes to the existing APIs then also update CODEC_MIN_API_VERSION to current version */ struct codec_api { off_t filesize; /* Total file length */ off_t curpos; /* Current buffer position */ /* For gapless mp3 */ struct mp3entry *id3; /* TAG metadata pointer */ bool *taginfo_ready; /* Is metadata read */ /* Codec should periodically check if stop_codec is set to true. In case it is, codec must return immediately */ bool stop_codec; /* Codec should periodically check if new_track is non zero. When it is, the codec should request a new track. */ int new_track; /* If seek_time != 0, codec should seek to that song position (in ms) if codec supports seeking. */ long seek_time; /* Returns buffer to malloc array. Only codeclib should need this. */ void* (*get_codec_memory)(size_t *size); /* Insert PCM data into audio buffer for playback. Playback will start automatically. */ bool (*pcmbuf_insert)(const char *data, size_t length); bool (*pcmbuf_insert_split)(const void *ch1, const void *ch2, size_t length); /* Set song position in WPS (value in ms). */ void (*set_elapsed)(unsigned int value); /* Read next amount bytes from file buffer to . Will return number of bytes read or 0 if end of file. */ size_t (*read_filebuf)(void *ptr, size_t size); /* Request pointer to file buffer which can be used to read amount of data. tells the buffer system how much data it should try to allocate. If is 0, end of file is reached. */ void* (*request_buffer)(size_t *realsize, size_t reqsize); /* Advance file buffer position by amount of bytes. */ void (*advance_buffer)(size_t amount); /* Advance file buffer to a pointer location inside file buffer. */ void (*advance_buffer_loc)(void *ptr); /* Seek file buffer to position beginning of file. */ bool (*seek_buffer)(size_t newpos); /* Codec should call this function when it has done the seeking. */ void (*seek_complete)(void); /* Calculate mp3 seek position from given time data in ms. */ off_t (*mp3_get_filepos)(int newtime); /* Request file change from file buffer. Returns true is next track is available and changed. If return value is false, codec should exit immediately with PLUGIN_OK status. */ bool (*request_next_track)(void); /* Free the buffer area of the current codec after its loaded */ void (*discard_codec)(void); void (*set_offset)(size_t value); /* Configure different codec buffer parameters. */ void (*configure)(int setting, void *value); void (*splash)(int ticks, bool center, const unsigned char *fmt, ...); /* file */ int (*PREFIX(open))(const char* pathname, int flags); int (*close)(int fd); ssize_t (*read)(int fd, void* buf, size_t count); off_t (*PREFIX(lseek))(int fd, off_t offset, int whence); int (*PREFIX(creat))(const char *pathname, mode_t mode); ssize_t (*write)(int fd, const void* buf, size_t count); int (*PREFIX(remove))(const char* pathname); int (*PREFIX(rename))(const char* path, const char* newname); int (*PREFIX(ftruncate))(int fd, off_t length); int (*fdprintf)(int fd, const char *fmt, ...); int (*read_line)(int fd, char* buffer, int buffer_size); bool (*settings_parseline)(char* line, char** name, char** value); #ifndef SIMULATOR void (*ata_sleep)(void); #endif /* dir */ DIR* (*PREFIX(opendir))(const char* name); int (*PREFIX(closedir))(DIR* dir); struct dirent* (*PREFIX(readdir))(DIR* dir); int (*PREFIX(mkdir))(const char *name, int mode); /* kernel/ system */ void (*PREFIX(sleep))(int ticks); void (*yield)(void); long* current_tick; long (*default_event_handler)(long event); long (*default_event_handler_ex)(long event, void (*callback)(void *), void *parameter); int (*create_thread)(void (*function)(void), void* stack, int stack_size, const char *name); void (*remove_thread)(int threadnum); void (*reset_poweroff_timer)(void); #ifndef SIMULATOR int (*system_memory_guard)(int newmode); long *cpu_frequency; #ifdef HAVE_ADJUSTABLE_CPU_FREQ void (*cpu_boost)(bool on_off); #endif #endif /* strings and memory */ int (*snprintf)(char *buf, size_t size, const char *fmt, ...); char* (*strcpy)(char *dst, const char *src); char* (*strncpy)(char *dst, const char *src, size_t length); size_t (*strlen)(const char *str); char * (*strrchr)(const char *s, int c); int (*strcmp)(const char *, const char *); int (*strcasecmp)(const char *, const char *); int (*strncasecmp)(const char *s1, const char *s2, size_t n); void* (*memset)(void *dst, int c, size_t length); void* (*memcpy)(void *out, const void *in, size_t n); void* (*memmove)(void *out, const void *in, size_t n); const char *_ctype_; int (*atoi)(const char *str); char *(*strchr)(const char *s, int c); char *(*strcat)(char *s1, const char *s2); int (*memcmp)(const void *s1, const void *s2, size_t n); char *(*strcasestr) (const char* phaystack, const char* pneedle); void *(*memchr)(const void *s1, int c, size_t n); /* sound */ void (*sound_set)(int setting, int value); #ifndef SIMULATOR void (*mp3_play_data)(const unsigned char* start, int size, void (*get_more)(unsigned char** start, int* size)); void (*mp3_play_pause)(bool play); void (*mp3_play_stop)(void); bool (*mp3_is_playing)(void); #endif /* !SIMULATOR */ /* playback control */ void (*PREFIX(audio_play))(long offset); void (*audio_stop)(void); void (*audio_pause)(void); void (*audio_resume)(void); void (*audio_next)(void); void (*audio_prev)(void); void (*audio_ff_rewind)(long newtime); struct mp3entry* (*audio_next_track)(void); int (*playlist_amount)(void); int (*audio_status)(void); bool (*audio_has_changed_track)(void); struct mp3entry* (*audio_current_track)(void); void (*audio_flush_and_reload_tracks)(void); int (*audio_get_file_pos)(void); /* misc */ void (*srand)(unsigned int seed); int (*rand)(void); void (*qsort)(void *base, size_t nmemb, size_t size, int(*compar)(const void *, const void *)); int (*kbd_input)(char* buffer, int buflen); struct tm* (*get_time)(void); int (*set_time)(const struct tm *tm); void* (*plugin_get_audio_buffer)(int* buffer_size); #if defined(DEBUG) || defined(SIMULATOR) void (*debugf)(const char *fmt, ...); #endif #ifdef ROCKBOX_HAS_LOGF void (*logf)(const char *fmt, ...); #endif struct user_settings* global_settings; bool (*mp3info)(struct mp3entry *entry, const char *filename, bool v1first); int (*count_mp3_frames)(int fd, int startpos, int filesize, void (*progressfunc)(int)); int (*create_xing_header)(int fd, long startpos, long filesize, unsigned char *buf, unsigned long num_frames, unsigned long rec_time, unsigned long header_template, void (*progressfunc)(int), bool generate_toc); unsigned long (*find_next_frame)(int fd, long *offset, long max_offset, unsigned long last_header); int (*battery_level)(void); bool (*battery_level_safe)(void); #ifdef RB_PROFILE void (*profile_thread)(void); void (*profstop)(void); void (*profile_func_enter)(void *this_fn, void *call_site); void (*profile_func_exit)(void *this_fn, void *call_site); #endif /* new stuff at the end, sort into place next time the API gets incompatible */ }; /* codec header */ struct codec_header { unsigned long magic; unsigned short target_id; unsigned short api_version; unsigned char *load_addr; unsigned char *end_addr; enum codec_status(*entry_point)(struct codec_api*); }; #ifdef CODEC #ifndef SIMULATOR /* plugin_* is correct, codecs use the plugin linker script */ extern unsigned char plugin_start_addr[]; extern unsigned char plugin_end_addr[]; #define CODEC_HEADER \ const struct codec_header __header \ __attribute__ ((section (".header")))= { \ CODEC_MAGIC, TARGET_ID, CODEC_API_VERSION, \ plugin_start_addr, plugin_end_addr, codec_start }; #else /* SIMULATOR */ #define CODEC_HEADER \ const struct codec_header __header = { \ CODEC_MAGIC, TARGET_ID, CODEC_API_VERSION, \ NULL, NULL, codec_start }; #endif #endif /* defined by the codec loader (codec.c) */ int codec_load_ram(char* codecptr, int size, void* ptr2, int bufwrap, struct codec_api *api); int codec_load_file(const char* codec, struct codec_api *api); /* defined by the codec */ enum codec_status codec_start(struct codec_api* rockbox); #endif