diff options
| -rwxr-xr-x | channels/gentone-ulaw.c | 157 | ||||
| -rwxr-xr-x | channels/gentone.c | 4 | ||||
| -rwxr-xr-x | ecdisa.h | 15 | ||||
| -rwxr-xr-x | fskmodem.c | 13 | ||||
| -rwxr-xr-x | include/asterisk/frame.h | 250 | ||||
| -rwxr-xr-x | include/asterisk/tdd.h | 74 |
6 files changed, 434 insertions, 79 deletions
diff --git a/channels/gentone-ulaw.c b/channels/gentone-ulaw.c new file mode 100755 index 000000000..b290d76c7 --- /dev/null +++ b/channels/gentone-ulaw.c @@ -0,0 +1,157 @@ +/* Generate a header file for a particular + single or double frequency */ + +#include <stdio.h> +#include <math.h> +#include <string.h> +#include <unistd.h> +#include <stdlib.h> +#define CLIP 32635 +#define BIAS 0x84 +static float loudness=16384.0; + +static int calc_samples(int freq) +{ + int x, samples; + /* Calculate the number of samples at 8000hz sampling + we need to have this wave form */ + samples = 8000; + /* Take out common 2's up to six times */ + for (x=0;x<6;x++) + if (!(freq % 2)) { + freq /= 2; + samples /= 2; + } + /* Take out common 5's (up to three times */ + for (x=0;x<3;x++) + if (!(freq % 5)) { + freq /= 5; + samples /=5; + } + /* No more common factors. */ + return samples; +} + +/* +** This routine converts from linear to ulaw +** +** Craig Reese: IDA/Supercomputing Research Center +** Joe Campbell: Department of Defense +** 29 September 1989 +** +** References: +** 1) CCITT Recommendation G.711 (very difficult to follow) +** 2) "A New Digital Technique for Implementation of Any +** Continuous PCM Companding Law," Villeret, Michel, +** et al. 1973 IEEE Int. Conf. on Communications, Vol 1, +** 1973, pg. 11.12-11.17 +** 3) MIL-STD-188-113,"Interoperability and Performance Standards +** for Analog-to_Digital Conversion Techniques," +** 17 February 1987 +** +** Input: Signed 16 bit linear sample +** Output: 8 bit ulaw sample +*/ + +#define ZEROTRAP /* turn on the trap as per the MIL-STD */ +#define BIAS 0x84 /* define the add-in bias for 16 bit samples */ +#define CLIP 32635 + +static unsigned char linear2ulaw(short sample) { +static int exp_lut[256] = {0,0,1,1,2,2,2,2,3,3,3,3,3,3,3,3, + 4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4, + 5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5, + 5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5, + 6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6, + 6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6, + 6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6, + 6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6, + 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, + 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, + 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, + 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, + 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, + 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, + 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, + 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7}; + int sign, exponent, mantissa; + unsigned char ulawbyte; + + /* Get the sample into sign-magnitude. */ + sign = (sample >> 8) & 0x80; /* set aside the sign */ + if (sign != 0) sample = -sample; /* get magnitude */ + if (sample > CLIP) sample = CLIP; /* clip the magnitude */ + + /* Convert from 16 bit linear to ulaw. */ + sample = sample + BIAS; + exponent = exp_lut[(sample >> 7) & 0xFF]; + mantissa = (sample >> (exponent + 3)) & 0x0F; + ulawbyte = ~(sign | (exponent << 4) | mantissa); +#ifdef ZEROTRAP + if (ulawbyte == 0) ulawbyte = 0x02; /* optional CCITT trap */ +#endif + + return(ulawbyte); +} + +int main(int argc, char *argv[]) +{ + FILE *f; + int freq1, freq2; + float wlen1, wlen2; + float val; + int x, samples1, samples2, samples=0; + char fn[256]; + if (argc < 3) { + fprintf(stderr, "Usage: gensound <name> <freq1> [freq2]\n"); + exit(1); + } + freq1 = atoi(argv[2]); + if (argc > 3) + freq2 = atoi(argv[3]); + else + freq2 = 0; + wlen1 = 8000.0/(float)freq1; + samples1 = calc_samples(freq1); + printf("Wavelength 1 (in samples): %10.5f\n", wlen1); + printf("Minimum samples (1): %d (%f.3 wavelengths)\n", samples1, samples1 / wlen1); + if (freq2) { + wlen2 = 8000.0/(float)freq2; + samples2 = calc_samples(freq2); + printf("Wavelength 1 (in samples): %10.5f\n", wlen2); + printf("Minimum samples (1): %d (%f.3 wavelengths)\n", samples2, samples2 / wlen2); + } + samples = samples1; + if (freq2) { + while(samples % samples2) + samples += samples1; + } + printf("Need %d samples\n", samples); + snprintf(fn, sizeof(fn), "%s.h", argv[1]); + if ((f = fopen(fn, "w"))) { + if (freq2) + fprintf(f, "/* %s: Generated from frequencies %d and %d \n" + " by gentone. %d samples */\n", fn, freq1, freq2, samples); + else + fprintf(f, "/* %s: Generated from frequency %d\n" + " by gentone. %d samples */\n", fn, freq1, samples); + fprintf(f, "static unsigned char %s[%d] = {\n\t", argv[1], samples); + for (x=0;x<samples;x++) { + val = loudness * sin((freq1 * 2.0 * M_PI * x)/8000.0); + if (freq2) + val += loudness * sin((freq2 * 2.0 * M_PI * x)/8000.0); + fprintf(f, "%3d, ", (int) linear2ulaw(val)); + if (!((x+1) % 8)) + fprintf(f, "\n\t"); + } + if (x % 15) + fprintf(f, "\n"); + fprintf(f, "};\n"); + fclose(f); + printf("Wrote %s\n", fn); + } else { + fprintf(stderr, "Unable to open %s for writing\n", fn); + return 1; + } + return 0; +} diff --git a/channels/gentone.c b/channels/gentone.c index 00f5af179..530db0eef 100755 --- a/channels/gentone.c +++ b/channels/gentone.c @@ -69,10 +69,10 @@ int main(int argc, char *argv[]) if ((f = fopen(fn, "w"))) { if (freq2) fprintf(f, "/* %s: Generated from frequencies %d and %d \n" - " by gensound. %d samples */\n", fn, freq1, freq2, samples); + " by gentone. %d samples */\n", fn, freq1, freq2, samples); else fprintf(f, "/* %s: Generated from frequency %d\n" - " by gensound. %d samples */\n", fn, freq1, samples); + " by gentone. %d samples */\n", fn, freq1, samples); fprintf(f, "static short %s[%d] = {\n\t", argv[1], samples); for (x=0;x<samples;x++) { val = loudness * sin((freq1 * 2.0 * M_PI * x)/8000.0); diff --git a/ecdisa.h b/ecdisa.h new file mode 100755 index 000000000..df6f773a0 --- /dev/null +++ b/ecdisa.h @@ -0,0 +1,15 @@ +/* ecdisa.h: Generated from frequency 2100 + by gentone. 80 samples */ +static unsigned char ecdisa[80] = { + 255, 143, 58, 16, 171, 146, 34, 20, + 156, 151, 25, 26, 149, 159, 19, 38, + 145, 177, 16, 73, 143, 73, 16, 177, + 145, 38, 19, 159, 149, 26, 25, 151, + 156, 20, 34, 146, 171, 16, 58, 143, + 255, 15, 186, 144, 43, 18, 162, 148, + 28, 23, 153, 154, 21, 31, 147, 166, + 17, 49, 144, 201, 15, 201, 144, 49, + 17, 166, 147, 31, 21, 154, 153, 23, + 28, 148, 162, 18, 43, 144, 186, 15, + +}; diff --git a/fskmodem.c b/fskmodem.c index 554bb9410..6d45bde7e 100755 --- a/fskmodem.c +++ b/fskmodem.c @@ -234,10 +234,15 @@ search_startbit3: getbyte: - /* Need at least 80 samples to be sure we'll have a byte */ - if (*len < 80) - return 0; - + /* Need at least 80 samples (for 1200) or + 1320 (for 45.5) to be sure we'll have a byte */ + if (fskd->nbit < 8) { + if (*len < 1320) + return 0; + } else { + if (*len < 80) + return 0; + } /* Leemos ahora los bits de datos */ j=fskd->nbit; for (a=n1=0;j;j--) { diff --git a/include/asterisk/frame.h b/include/asterisk/frame.h index 536f83c04..44e1c3073 100755 --- a/include/asterisk/frame.h +++ b/include/asterisk/frame.h @@ -23,20 +23,30 @@ extern "C" { #include <endian.h> #include <sys/types.h> +//! Data structure associated with a single frame of data /* A frame of data read used to communicate between between channels and applications */ struct ast_frame { - int frametype; /* Kind of frame */ - int subclass; /* Subclass, frame dependent */ - int datalen; /* Length of data */ - int timelen; /* Amount of time associated with this frame */ - int mallocd; /* Was the data malloc'd? i.e. should we - free it when we discard the frame? */ - int offset; /* How far into "data" the data really starts */ - char *src; /* Optional source of frame for debugging */ - void *data; /* Pointer to actual data */ - struct ast_frame *prev; /* Next/Prev for linking stand alone frames */ - struct ast_frame *next; /* Next/Prev for linking stand alone frames */ + /*! Kind of frame */ + int frametype; + /*! Subclass, frame dependent */ + int subclass; + /*! Length of data */ + int datalen; + /*! Amount of time associated with this frame */ + int timelen; + /*! Was the data malloc'd? i.e. should we free it when we discard the frame? */ + int mallocd; + /*! How far into "data" the data really starts */ + int offset; + /*! Optional source of frame for debugging */ + char *src; + /*! Pointer to actual data */ + void *data; + /*! Next/Prev for linking stand alone frames */ + struct ast_frame *prev; + /*! Next/Prev for linking stand alone frames */ + struct ast_frame *next; /* Unused except if debugging is turned on, but left in the struct so that it can be turned on without requiring a recompile of the whole thing */ @@ -48,63 +58,109 @@ struct ast_frame_chain { struct ast_frame_chain *next; }; -#define AST_FRIENDLY_OFFSET 64 /* It's polite for a a new frame to +#define AST_FRIENDLY_OFFSET 64 /*! It's polite for a a new frame to have at least this number of bytes of offset before your real frame data so that additional headers can be added. */ - -#define AST_MALLOCD_HDR (1 << 0) /* Need the header be free'd? */ -#define AST_MALLOCD_DATA (1 << 1) /* Need the data be free'd? */ -#define AST_MALLOCD_SRC (1 << 2) /* Need the source be free'd? (haha!) */ +/*! Need the header be free'd? */ +#define AST_MALLOCD_HDR (1 << 0) +/*! Need the data be free'd? */ +#define AST_MALLOCD_DATA (1 << 1) +/*! Need the source be free'd? (haha!) */ +#define AST_MALLOCD_SRC (1 << 2) /* Frame types */ -#define AST_FRAME_DTMF 1 /* A DTMF digit, subclass is the digit */ -#define AST_FRAME_VOICE 2 /* Voice data, subclass is AST_FORMAT_* */ -#define AST_FRAME_VIDEO 3 /* Video frame, maybe?? :) */ -#define AST_FRAME_CONTROL 4 /* A control frame, subclass is AST_CONTROL_* */ -#define AST_FRAME_NULL 5 /* An empty, useless frame */ -#define AST_FRAME_IAX 6 /* Inter Aterisk Exchange private frame type */ -#define AST_FRAME_TEXT 7 /* Text messages */ -#define AST_FRAME_IMAGE 8 /* Image Frames */ -#define AST_FRAME_HTML 9 /* HTML Frame */ +/*! A DTMF digit, subclass is the digit */ +#define AST_FRAME_DTMF 1 +/*! Voice data, subclass is AST_FORMAT_* */ +#define AST_FRAME_VOICE 2 +/*! Video frame, maybe?? :) */ +#define AST_FRAME_VIDEO 3 +/*! A control frame, subclass is AST_CONTROL_* */ +#define AST_FRAME_CONTROL 4 +/*! An empty, useless frame */ +#define AST_FRAME_NULL 5 +/*! Inter Aterisk Exchange private frame type */ +#define AST_FRAME_IAX 6 +/*! Text messages */ +#define AST_FRAME_TEXT 7 +/*! Image Frames */ +#define AST_FRAME_IMAGE 8 +/*! HTML Frame */ +#define AST_FRAME_HTML 9 /* HTML subclasses */ -#define AST_HTML_URL 1 /* Sending a URL */ -#define AST_HTML_DATA 2 /* Data frame */ -#define AST_HTML_BEGIN 4 /* Beginning frame */ -#define AST_HTML_END 8 /* End frame */ -#define AST_HTML_LDCOMPLETE 16 /* Load is complete */ -#define AST_HTML_NOSUPPORT 17 /* Peer is unable to support HTML */ -#define AST_HTML_LINKURL 18 /* Send URL, and track */ +/*! Sending a URL */ +#define AST_HTML_URL 1 +/*! Data frame */ +#define AST_HTML_DATA 2 +/*! Beginning frame */ +#define AST_HTML_BEGIN 4 +/*! End frame */ +#define AST_HTML_END 8 +/*! Load is complete */ +#define AST_HTML_LDCOMPLETE 16 +/*! Peer is unable to support HTML */ +#define AST_HTML_NOSUPPORT 17 +/*! Send URL, and track */ +#define AST_HTML_LINKURL 18 +/*! No more HTML linkage */ +#define AST_HTML_UNLINK 19 +/*! Reject link request */ +#define AST_HTML_LINKREJECT 20 /* Data formats for capabilities and frames alike */ -#define AST_FORMAT_G723_1 (1 << 0) /* G.723.1 compression */ -#define AST_FORMAT_GSM (1 << 1) /* GSM compression */ -#define AST_FORMAT_ULAW (1 << 2) /* Raw mu-law data (G.711) */ -#define AST_FORMAT_ALAW (1 << 3) /* Raw A-law data (G.711) */ -#define AST_FORMAT_MP3 (1 << 4) /* MPEG-2 layer 3 */ -#define AST_FORMAT_ADPCM (1 << 5) /* ADPCM (whose?) */ -#define AST_FORMAT_SLINEAR (1 << 6) /* Raw 16-bit Signed Linear (8000 Hz) PCM */ -#define AST_FORMAT_LPC10 (1 << 7) /* LPC10, 180 samples/frame */ -#define AST_FORMAT_MAX_AUDIO (1 << 15) /* Maximum audio format */ -#define AST_FORMAT_JPEG (1 << 16) /* JPEG Images */ -#define AST_FORMAT_PNG (1 << 17) /* PNG Images */ -#define AST_FORMAT_H261 (1 << 18) /* H.261 Video */ -#define AST_FORMAT_H263 (1 << 19) /* H.263 Video */ +/*! G.723.1 compression */ +#define AST_FORMAT_G723_1 (1 << 0) +/*! GSM compression */ +#define AST_FORMAT_GSM (1 << 1) +/*! Raw mu-law data (G.711) */ +#define AST_FORMAT_ULAW (1 << 2) +/*! Raw A-law data (G.711) */ +#define AST_FORMAT_ALAW (1 << 3) +/*! MPEG-2 layer 3 */ +#define AST_FORMAT_MP3 (1 << 4) +/*! ADPCM (whose?) */ +#define AST_FORMAT_ADPCM (1 << 5) +/*! Raw 16-bit Signed Linear (8000 Hz) PCM */ +#define AST_FORMAT_SLINEAR (1 << 6) +/*! LPC10, 180 samples/frame */ +#define AST_FORMAT_LPC10 (1 << 7) +/*! Maximum audio format */ +#define AST_FORMAT_MAX_AUDIO (1 << 15) +/*! JPEG Images */ +#define AST_FORMAT_JPEG (1 << 16) +/*! PNG Images */ +#define AST_FORMAT_PNG (1 << 17) +/*! H.261 Video */ +#define AST_FORMAT_H261 (1 << 18) +/*! H.263 Video */ +#define AST_FORMAT_H263 (1 << 19) /* Control frame types */ -#define AST_CONTROL_HANGUP 1 /* Other end has hungup */ -#define AST_CONTROL_RING 2 /* Local ring */ -#define AST_CONTROL_RINGING 3 /* Remote end is ringing */ -#define AST_CONTROL_ANSWER 4 /* Remote end has answered */ -#define AST_CONTROL_BUSY 5 /* Remote end is busy */ -#define AST_CONTROL_TAKEOFFHOOK 6 /* Make it go off hook */ -#define AST_CONTROL_OFFHOOK 7 /* Line is off hook */ -#define AST_CONTROL_CONGESTION 8 /* Congestion (circuits busy) */ -#define AST_CONTROL_FLASH 9 /* Flash hook */ -#define AST_CONTROL_WINK 10 /* Wink */ -#define AST_CONTROL_OPTION 11 /* Set a low-level option */ +/*! Other end has hungup */ +#define AST_CONTROL_HANGUP 1 +/*! Local ring */ +#define AST_CONTROL_RING 2 +/*! Remote end is ringing */ +#define AST_CONTROL_RINGING 3 +/*! Remote end has answered */ +#define AST_CONTROL_ANSWER 4 +/*! Remote end is busy */ +#define AST_CONTROL_BUSY 5 +/*! Make it go off hook */ +#define AST_CONTROL_TAKEOFFHOOK 6 +/*! Line is off hook */ +#define AST_CONTROL_OFFHOOK 7 +/*! Congestion (circuits busy) */ +#define AST_CONTROL_CONGESTION 8 +/*! Flash hook */ +#define AST_CONTROL_FLASH 9 +/*! Wink */ +#define AST_CONTROL_WINK 10 +/*! Set a low-level option */ +#define AST_CONTROL_OPTION 11 /* Option identifiers and flags */ #define AST_OPTION_FLAG_REQUEST 0 @@ -112,11 +168,14 @@ struct ast_frame_chain { #define AST_OPTION_FLAG_REJECT 2 #define AST_OPTION_FLAG_QUERY 4 #define AST_OPTION_FLAG_ANSWER 5 -#define AST_OPTION_FLAG_WTF 6 +#define AST_OPTION_FLAG_WTF 6 + +/* Verify touchtones by muting audio transmission + (and reception) and verify the tone is still present */ +#define AST_OPTION_TONE_VERIFY 1 -#define AST_OPTION_TONE_VERIFY 1 /* Verify touchtones by muting audio - transmission (and reception) and - verify the tone is still present */ +/* Put a compatible channel into TDD (TTY for the hearing-impared) mode */ +#define AST_OPTION_TDD 2 struct ast_option_header { /* Always keep in network byte order */ @@ -134,37 +193,82 @@ struct ast_option_header { u_int8_t data[0]; }; -/* Request a frame be allocated. source is an optional source of the frame, - len is the requested length, or "0" if the caller will supply the buffer */ +// Requests a frame to be allocated +/* + * \param source + * Request a frame be allocated. source is an optional source of the frame, + * len is the requested length, or "0" if the caller will supply the buffer + */ +#if 0 /* Unimplemented */ struct ast_frame *ast_fralloc(char *source, int len); +#endif -/* Free a frame, and the memory it used if applicable */ +//! Frees a frame +/*! + * \param fr Frame to free + * Free a frame, and the memory it used if applicable + * no return. + */ void ast_frfree(struct ast_frame *fr); -/* Take a frame, and if it's not been malloc'd, make a malloc'd copy - and if the data hasn't been malloced then make the - data malloc'd. If you need to store frames, say for queueing, then - you should call this function. */ +//! Copies a frame +/*! + * \param fr frame to act upon + * Take a frame, and if it's not been malloc'd, make a malloc'd copy + * and if the data hasn't been malloced then make the + * data malloc'd. If you need to store frames, say for queueing, then + * you should call this function. + * Returns a frame on success, NULL on error + */ struct ast_frame *ast_frisolate(struct ast_frame *fr); -/* Dupliates a frame -- should only rarely be used, typically frisolate is - good enough */ +//! Copies a frame +/*! + * \param fr frame to copy + * Dupliates a frame -- should only rarely be used, typically frisolate is good enough + * Returns a frame on success, NULL on error + */ struct ast_frame *ast_frdup(struct ast_frame *fr); +//! Chains a frame -- unimplemented +#if 0 /* unimplemented */ void ast_frchain(struct ast_frame_chain *fc); +#endif -/* Read a frame from a stream or packet fd, as written by fd_write */ +//! Reads a frame from an fd +/*! + * \param fd an opened fd to read from + * Read a frame from a stream or packet fd, as written by fd_write + * returns a frame on success, NULL on error + */ struct ast_frame *ast_fr_fdread(int fd); -/* Write a frame to an fd */ +//! Writes a frame to an fd +/*! + * \param fd Which fd to write to + * \param frame frame to write to the fd + * Write a frame to an fd + * Returns 0 on success, -1 on failure + */ int ast_fr_fdwrite(int fd, struct ast_frame *frame); -/* Send a hangup (NULL equivalent) on an fd */ +//! Sends a hangup to an fd +/*! + * \param fd fd to write to + * Send a hangup (NULL equivalent) on an fd + * Returns 0 on success, -1 on failure + */ int ast_fr_fdhangup(int fd); -/* Get a format by its name */ +//! Get a format from a name +/*! + * \param name string of format + * Gets a format from a name. + * This returns the form of the format in binary on success, 0 on error. + */ extern int ast_getformatbyname(char *name); +//! Pick the best codec /* Choose the best codec... Uhhh... Yah. */ extern int ast_best_codec(int fmts); diff --git a/include/asterisk/tdd.h b/include/asterisk/tdd.h new file mode 100755 index 000000000..4ee057f97 --- /dev/null +++ b/include/asterisk/tdd.h @@ -0,0 +1,74 @@ +/* + * Asterisk -- A telephony toolkit for Linux. + * + * TTY/TDD Generation support + * + * Copyright (C) 1999, Mark Spencer + * + * Mark Spencer <markster@linux-support.net> + * + * This program is free software, distributed under the terms of + * the GNU General Public License. + * + * Includes code and algorithms from the Zapata library. + * + */ + +#ifndef _TDD_H +#define _TDD_H + +#define TDD_BYTES_PER_CHAR 2700 + +struct tdd_state; +typedef struct tdd_state TDDSTATE; + +//! CallerID Initialization +/*! + * Initializes the TDD system. Mostly stuff for inverse FFT + */ +extern void tdd_init(void); + +//! Generates a CallerID FSK stream in ulaw format suitable for transmission. +/*! + * \param buf Buffer to use. This needs to be large enough to accomodate all the generated samples. + * \param string This is the string to send. + * This function creates a stream of TDD data in ulaw format. It returns the size + * (in bytes) of the data (if it returns a size of 0, there is probably an error) +*/ +extern int tdd_generate(struct tdd_state *tdd, unsigned char *buf, char *string); + +//! Create a TDD state machine +/*! + * This function returns a malloc'd instance of the tdd_state data structure. + * Returns a pointer to a malloc'd tdd_state structure, or NULL on error. + */ +extern struct tdd_state *tdd_new(void); + +//! Read samples into the state machine, and return character (if any). +/*! + * \param tdd Which state machine to act upon + * \param buffer containing your samples + * \param samples number of samples contained within the buffer. + * + * Send received audio to the TDD demodulator. + * Returns -1 on error, 0 for "needs more samples", + * and > 0 (the character) if reception of a character is complete. + */ +extern int tdd_feed(struct tdd_state *tdd, unsigned char *ubuf, int samples); + +//! Free a TDD state machine +/*! + * \param tdd This is the tdd_state state machine to free + * This function frees tdd_state tdd. + */ +extern void tdd_free(struct tdd_state *tdd); + +//! Generate Echo Canceller diable tone (2100HZ) +/*! + * \param outbuf This is the buffer to receive the tone data + * \param len This is the length (in samples) of the tone data to generate + * Returns 0 if no error, and -1 if error. + */ +extern int ast_tdd_gen_ecdisa(unsigned char *outbuf, int len); + +#endif |