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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2002 Björn Stenberg
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* 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 codecs.make) */
#ifdef CODEC
#define NO_REDEFINES_PLEASE
#endif
#include "rbcodecconfig.h"
#include "metadata.h"
#include "audio.h"
#ifdef RB_PROFILE
#include "profile.h"
#include "thread.h"
#endif
#if (CONFIG_CODEC == SWCODEC)
#ifdef HAVE_RECORDING
#include "enc_base.h"
#endif
#include "dsp_core.h"
#include "dsp_misc.h"
#include "dsp-util.h"
#endif
#include "gcc_extensions.h"
#include "load_code.h"
#include <limits.h>
#ifdef CODEC
#if defined(DEBUG) || defined(SIMULATOR)
#undef DEBUGF
#define DEBUGF ci->debugf
#undef LDEBUGF
#define LDEBUGF ci->debugf
#else
#define DEBUGF(...)
#define LDEBUGF(...)
#endif
#ifdef ROCKBOX_HAS_LOGF
#undef LOGF
#define LOGF ci->logf
#else
#define LOGF(...)
#endif
#endif
/* magic for normal codecs */
#define CODEC_MAGIC 0x52434F44 /* RCOD */
/* magic for encoder codecs */
#define CODEC_ENC_MAGIC 0x52454E43 /* RENC */
/* increase this every time the api struct changes */
#define CODEC_API_VERSION 48
/* 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 48
/* reasons for calling codec main entrypoint */
enum codec_entry_call_reason {
CODEC_LOAD = 0,
CODEC_UNLOAD
};
/* codec return codes */
enum codec_status {
CODEC_OK = 0,
CODEC_ERROR = -1,
};
/* codec command action codes */
enum codec_command_action {
CODEC_ACTION_HALT = -1,
CODEC_ACTION_NULL = 0,
CODEC_ACTION_SEEK_TIME = 1,
#ifdef HAVE_RECORDING
CODEC_ACTION_STREAM_FINISH = 2,
#endif
CODEC_ACTION_MIN = LONG_MIN,
CODEC_ACTION_MAX = LONG_MAX,
};
/* 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 */
struct mp3entry *id3; /* TAG metadata pointer */
int audio_hid; /* Current audio handle */
/* The dsp instance to be used for audio output */
struct dsp_config *dsp;
/* Returns buffer to malloc array. Only codeclib should need this. */
void* (*codec_get_buffer)(size_t *size);
/* Insert PCM data into audio buffer for playback. Playback will start
automatically. */
void (*pcmbuf_insert)(const void *ch1, const void *ch2, int count);
/* Set song position in WPS (value in ms). */
void (*set_elapsed)(unsigned long value);
/* Read next <size> amount bytes from file buffer to <ptr>.
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
<realsize> amount of data. <reqsize> tells the buffer system
how much data it should try to allocate. If <realsize> is 0,
end of file is reached. */
void* (*request_buffer)(size_t *realsize, size_t reqsize);
/* Advance file buffer position by <amount> amount of bytes. */
void (*advance_buffer)(size_t amount);
/* Seek file buffer to position <newpos> beginning of file. */
bool (*seek_buffer)(size_t newpos);
/* Codec should call this function when it has done the seeking. */
void (*seek_complete)(void);
/* Update the current position */
void (*set_offset)(size_t value);
/* Configure different codec buffer parameters. */
void (*configure)(int setting, intptr_t value);
/* Obtain command action on what to do next */
long (*get_command)(intptr_t *param);
/* Determine whether the track should be looped, if applicable. */
bool (*loop_track)(void);
/* kernel/ system */
#if defined(CPU_ARM) && CONFIG_PLATFORM & PLATFORM_NATIVE
void (*__div0)(void);
#endif
unsigned (*sleep)(unsigned ticks);
void (*yield)(void);
#if NUM_CORES > 1
unsigned int
(*create_thread)(void (*function)(void), void* stack,
size_t stack_size, unsigned flags, const char *name
IF_PRIO(, int priority)
IF_COP(, unsigned int core));
void (*thread_thaw)(unsigned int thread_id);
void (*thread_wait)(unsigned int thread_id);
void (*semaphore_init)(struct semaphore *s, int max, int start);
int (*semaphore_wait)(struct semaphore *s, int timeout);
void (*semaphore_release)(struct semaphore *s);
#endif /* NUM_CORES */
void (*commit_dcache)(void);
void (*commit_discard_dcache)(void);
void (*commit_discard_idcache)(void);
/* strings and memory */
char* (*strcpy)(char *dst, const char *src);
size_t (*strlen)(const char *str);
int (*strcmp)(const char *, const char *);
char *(*strcat)(char *s1, const char *s2);
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);
int (*memcmp)(const void *s1, const void *s2, size_t n);
void *(*memchr)(const void *s1, int c, size_t n);
#if defined(DEBUG) || defined(SIMULATOR)
void (*debugf)(const char *fmt, ...) ATTRIBUTE_PRINTF(1, 2);
#endif
#ifdef ROCKBOX_HAS_LOGF
void (*logf)(const char *fmt, ...) ATTRIBUTE_PRINTF(1, 2);
#endif
/* Tremor requires qsort */
void (*qsort)(void *base, size_t nmemb, size_t size,
int(*compar)(const void *, const 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
#ifdef HAVE_RECORDING
int (*enc_pcmbuf_read)(void *buf, int count);
int (*enc_pcmbuf_advance)(int count);
struct enc_chunk_data * (*enc_encbuf_get_buffer)(size_t need);
void (*enc_encbuf_finish_buffer)(void);
ssize_t (*enc_stream_read)(void *buf, size_t count);
off_t (*enc_stream_lseek)(off_t offset, int whence);
ssize_t (*enc_stream_write)(const void *buf, size_t count);
int (*round_value_to_list32)(unsigned long value,
const unsigned long list[],
int count,
bool signd);
#endif /* HAVE_RECORDING */
/* new stuff at the end, sort into place next time
the API gets incompatible */
};
/* codec header */
struct codec_header {
struct lc_header lc_hdr; /* must be first */
enum codec_status(*entry_point)(enum codec_entry_call_reason reason);
enum codec_status(*run_proc)(void);
struct codec_api **api;
void * rec_extension[]; /* extension for encoders */
};
#ifdef CODEC
#if (CONFIG_PLATFORM & PLATFORM_NATIVE)
/* plugin_* is correct, codecs use the plugin linker script */
extern unsigned char plugin_start_addr[];
extern unsigned char plugin_end_addr[];
/* decoders */
#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, \
codec_run, &ci };
/* encoders */
#define CODEC_ENC_HEADER \
const struct codec_header __header \
__attribute__ ((section (".header")))= { \
{ CODEC_ENC_MAGIC, TARGET_ID, CODEC_API_VERSION, \
plugin_start_addr, plugin_end_addr }, codec_start, \
codec_run, &ci, { enc_callback } };
#else /* def SIMULATOR */
/* decoders */
#define CODEC_HEADER \
const struct codec_header __header \
__attribute__((visibility("default"))) = { \
{ CODEC_MAGIC, TARGET_ID, CODEC_API_VERSION, NULL, NULL }, \
codec_start, codec_run, &ci };
/* encoders */
#define CODEC_ENC_HEADER \
const struct codec_header __header \
__attribute__((visibility("default"))) = { \
{ CODEC_ENC_MAGIC, TARGET_ID, CODEC_API_VERSION, NULL, NULL }, \
codec_start, codec_run, &ci, { enc_callback } };
#endif /* SIMULATOR */
#endif /* CODEC */
/* create full codec path from root filenames in audio_formats[]
assumes buffer size is MAX_PATH */
void codec_get_full_path(char *path, const char *codec_root_fn);
/* Returns pointer to and size of free codec RAM */
void *codec_get_buffer_callback(size_t *size);
/* defined by the codec loader (codec.c) */
int codec_load_buf(int hid, struct codec_api *api);
int codec_load_file(const char* codec, struct codec_api *api);
int codec_run_proc(void);
int codec_close(void);
#if CONFIG_CODEC == SWCODEC && defined(HAVE_RECORDING)
enc_callback_t codec_get_enc_callback(void);
#else
#define codec_get_enc_callback() NULL
#endif
/* defined by the codec */
enum codec_status codec_start(enum codec_entry_call_reason reason);
enum codec_status codec_main(enum codec_entry_call_reason reason);
enum codec_status codec_run(void);
#if CONFIG_CODEC == SWCODEC && defined(HAVE_RECORDING)
int enc_callback(enum enc_callback_reason reason, void *params);
#endif
#endif /* _CODECS_H_ */
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