ebadcc633a
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@9670 a1c6a512-1295-4272-9138-f99709370657
329 lines
11 KiB
C
329 lines
11 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2002 Björn Stenberg
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#ifndef _CODECS_H_
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#define _CODECS_H_
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/* instruct simulator code to not redefine any symbols when compiling codecs.
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(the CODEC macro is defined in apps/codecs/Makefile) */
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#ifdef CODEC
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#define NO_REDEFINES_PLEASE
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#endif
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#ifndef MEM
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#define MEM 2
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#endif
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include "config.h"
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#include "dir.h"
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#include "kernel.h"
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#include "button.h"
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#include "font.h"
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#include "system.h"
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#include "id3.h"
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#include "mpeg.h"
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#include "audio.h"
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#include "mp3_playback.h"
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#ifdef RB_PROFILE
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#include "profile.h"
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#endif
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#if (CONFIG_CODEC == SWCODEC)
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#include "dsp.h"
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#include "playback.h"
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#endif
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#include "settings.h"
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#include "thread.h"
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#include "playlist.h"
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#include "sound.h"
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#ifdef CODEC
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#if defined(DEBUG) || defined(SIMULATOR)
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#undef DEBUGF
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#define DEBUGF rb->debugf
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#undef LDEBUGF
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#define LDEBUGF rb->debugf
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#else
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#define DEBUGF(...)
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#define LDEBUGF(...)
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#endif
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#ifdef ROCKBOX_HAS_LOGF
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#undef LOGF
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#define LOGF rb->logf
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#else
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#define LOGF(...)
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#endif
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#endif
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#ifdef SIMULATOR
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#define PREFIX(_x_) sim_ ## _x_
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#else
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#define PREFIX(_x_) _x_
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#endif
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#define CODEC_MAGIC 0x52434F44 /* RCOD */
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/* increase this every time the api struct changes */
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#define CODEC_API_VERSION 8
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/* update this to latest version if a change to the api struct breaks
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backwards compatibility (and please take the opportunity to sort in any
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new function which are "waiting" at the end of the function table) */
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#define CODEC_MIN_API_VERSION 8
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/* codec return codes */
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enum codec_status {
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CODEC_OK = 0,
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CODEC_USB_CONNECTED,
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CODEC_ERROR = -1,
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};
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/* NOTE: To support backwards compatibility, only add new functions at
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the end of the structure. Every time you add a new function,
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remember to increase CODEC_API_VERSION. If you make changes to the
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existing APIs then also update CODEC_MIN_API_VERSION to current
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version
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*/
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struct codec_api {
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off_t filesize; /* Total file length */
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off_t curpos; /* Current buffer position */
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/* For gapless mp3 */
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struct mp3entry *id3; /* TAG metadata pointer */
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bool *taginfo_ready; /* Is metadata read */
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/* Codec should periodically check if stop_codec is set to true.
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In case it is, codec must return immediately */
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bool stop_codec;
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/* Codec should periodically check if new_track is non zero.
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When it is, the codec should request a new track. */
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int new_track;
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/* If seek_time != 0, codec should seek to that song position (in ms)
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if codec supports seeking. */
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long seek_time;
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/* Returns buffer to malloc array. Only codeclib should need this. */
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void* (*get_codec_memory)(size_t *size);
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/* Insert PCM data into audio buffer for playback. Playback will start
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automatically. */
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bool (*pcmbuf_insert)(const char *data, size_t length);
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bool (*pcmbuf_insert_split)(const void *ch1, const void *ch2, size_t length);
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/* Set song position in WPS (value in ms). */
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void (*set_elapsed)(unsigned int value);
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/* Read next <size> amount bytes from file buffer to <ptr>.
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Will return number of bytes read or 0 if end of file. */
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size_t (*read_filebuf)(void *ptr, size_t size);
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/* Request pointer to file buffer which can be used to read
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<realsize> amount of data. <reqsize> tells the buffer system
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how much data it should try to allocate. If <realsize> is 0,
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end of file is reached. */
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void* (*request_buffer)(size_t *realsize, size_t reqsize);
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/* Advance file buffer position by <amount> amount of bytes. */
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void (*advance_buffer)(size_t amount);
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/* Advance file buffer to a pointer location inside file buffer. */
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void (*advance_buffer_loc)(void *ptr);
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/* Seek file buffer to position <newpos> beginning of file. */
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bool (*seek_buffer)(size_t newpos);
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/* Codec should call this function when it has done the seeking. */
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void (*seek_complete)(void);
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/* Calculate mp3 seek position from given time data in ms. */
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off_t (*mp3_get_filepos)(int newtime);
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/* Request file change from file buffer. Returns true is next
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track is available and changed. If return value is false,
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codec should exit immediately with PLUGIN_OK status. */
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bool (*request_next_track)(void);
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/* Free the buffer area of the current codec after its loaded */
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void (*discard_codec)(void);
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void (*set_offset)(size_t value);
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/* Configure different codec buffer parameters. */
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void (*configure)(int setting, void *value);
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void (*splash)(int ticks, bool center, const unsigned char *fmt, ...);
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/* file */
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int (*PREFIX(open))(const char* pathname, int flags);
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int (*close)(int fd);
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ssize_t (*read)(int fd, void* buf, size_t count);
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off_t (*PREFIX(lseek))(int fd, off_t offset, int whence);
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int (*PREFIX(creat))(const char *pathname, mode_t mode);
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ssize_t (*write)(int fd, const void* buf, size_t count);
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int (*PREFIX(remove))(const char* pathname);
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int (*PREFIX(rename))(const char* path, const char* newname);
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int (*PREFIX(ftruncate))(int fd, off_t length);
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int (*fdprintf)(int fd, const char *fmt, ...);
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int (*read_line)(int fd, char* buffer, int buffer_size);
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bool (*settings_parseline)(char* line, char** name, char** value);
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#ifndef SIMULATOR
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void (*ata_sleep)(void);
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#endif
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/* dir */
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DIR* (*PREFIX(opendir))(const char* name);
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int (*PREFIX(closedir))(DIR* dir);
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struct dirent* (*PREFIX(readdir))(DIR* dir);
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int (*PREFIX(mkdir))(const char *name, int mode);
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/* kernel/ system */
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void (*PREFIX(sleep))(int ticks);
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void (*yield)(void);
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long* current_tick;
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long (*default_event_handler)(long event);
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long (*default_event_handler_ex)(long event, void (*callback)(void *), void *parameter);
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int (*create_thread)(void (*function)(void), void* stack, int stack_size, const char *name);
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void (*remove_thread)(int threadnum);
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void (*reset_poweroff_timer)(void);
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#ifndef SIMULATOR
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int (*system_memory_guard)(int newmode);
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long *cpu_frequency;
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#ifdef HAVE_ADJUSTABLE_CPU_FREQ
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void (*cpu_boost)(bool on_off);
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#endif
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#endif
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/* strings and memory */
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int (*snprintf)(char *buf, size_t size, const char *fmt, ...);
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char* (*strcpy)(char *dst, const char *src);
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char* (*strncpy)(char *dst, const char *src, size_t length);
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size_t (*strlen)(const char *str);
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char * (*strrchr)(const char *s, int c);
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int (*strcmp)(const char *, const char *);
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int (*strcasecmp)(const char *, const char *);
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int (*strncasecmp)(const char *s1, const char *s2, size_t n);
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void* (*memset)(void *dst, int c, size_t length);
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void* (*memcpy)(void *out, const void *in, size_t n);
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void* (*memmove)(void *out, const void *in, size_t n);
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const char *_ctype_;
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int (*atoi)(const char *str);
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char *(*strchr)(const char *s, int c);
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char *(*strcat)(char *s1, const char *s2);
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int (*memcmp)(const void *s1, const void *s2, size_t n);
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char *(*strcasestr) (const char* phaystack, const char* pneedle);
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void *(*memchr)(const void *s1, int c, size_t n);
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/* sound */
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void (*sound_set)(int setting, int value);
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#ifndef SIMULATOR
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void (*mp3_play_data)(const unsigned char* start, int size, void (*get_more)(unsigned char** start, int* size));
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void (*mp3_play_pause)(bool play);
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void (*mp3_play_stop)(void);
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bool (*mp3_is_playing)(void);
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#endif /* !SIMULATOR */
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/* playback control */
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void (*PREFIX(audio_play))(long offset);
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void (*audio_stop)(void);
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void (*audio_pause)(void);
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void (*audio_resume)(void);
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void (*audio_next)(void);
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void (*audio_prev)(void);
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void (*audio_ff_rewind)(long newtime);
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struct mp3entry* (*audio_next_track)(void);
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int (*playlist_amount)(void);
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int (*audio_status)(void);
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bool (*audio_has_changed_track)(void);
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struct mp3entry* (*audio_current_track)(void);
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void (*audio_flush_and_reload_tracks)(void);
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int (*audio_get_file_pos)(void);
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/* misc */
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void (*srand)(unsigned int seed);
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int (*rand)(void);
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void (*qsort)(void *base, size_t nmemb, size_t size,
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int(*compar)(const void *, const void *));
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int (*kbd_input)(char* buffer, int buflen);
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struct tm* (*get_time)(void);
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int (*set_time)(const struct tm *tm);
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void* (*plugin_get_audio_buffer)(int* buffer_size);
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#if defined(DEBUG) || defined(SIMULATOR)
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void (*debugf)(const char *fmt, ...);
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#endif
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#ifdef ROCKBOX_HAS_LOGF
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void (*logf)(const char *fmt, ...);
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#endif
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struct user_settings* global_settings;
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bool (*mp3info)(struct mp3entry *entry, const char *filename, bool v1first);
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int (*count_mp3_frames)(int fd, int startpos, int filesize,
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void (*progressfunc)(int));
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int (*create_xing_header)(int fd, long startpos, long filesize,
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unsigned char *buf, unsigned long num_frames,
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unsigned long rec_time, unsigned long header_template,
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void (*progressfunc)(int), bool generate_toc);
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unsigned long (*find_next_frame)(int fd, long *offset,
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long max_offset, unsigned long last_header);
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int (*battery_level)(void);
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bool (*battery_level_safe)(void);
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#ifdef RB_PROFILE
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void (*profile_thread)(void);
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void (*profstop)(void);
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void (*profile_func_enter)(void *this_fn, void *call_site);
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void (*profile_func_exit)(void *this_fn, void *call_site);
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#endif
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/* new stuff at the end, sort into place next time
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the API gets incompatible */
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};
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/* codec header */
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struct codec_header {
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unsigned long magic;
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unsigned short target_id;
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unsigned short api_version;
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unsigned char *load_addr;
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unsigned char *end_addr;
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enum codec_status(*entry_point)(struct codec_api*);
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};
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#ifdef CODEC
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#ifndef SIMULATOR
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/* plugin_* is correct, codecs use the plugin linker script */
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extern unsigned char plugin_start_addr[];
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extern unsigned char plugin_end_addr[];
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#define CODEC_HEADER \
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const struct codec_header __header \
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__attribute__ ((section (".header")))= { \
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CODEC_MAGIC, TARGET_ID, CODEC_API_VERSION, \
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plugin_start_addr, plugin_end_addr, codec_start };
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#else /* SIMULATOR */
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#define CODEC_HEADER \
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const struct codec_header __header = { \
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CODEC_MAGIC, TARGET_ID, CODEC_API_VERSION, \
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NULL, NULL, codec_start };
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#endif
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#endif
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/* defined by the codec loader (codec.c) */
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int codec_load_ram(char* codecptr, int size, void* ptr2, int bufwrap,
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struct codec_api *api);
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int codec_load_file(const char* codec, struct codec_api *api);
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/* defined by the codec */
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enum codec_status codec_start(struct codec_api* rockbox);
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#endif
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