signal processing master routines More...

Functions
SprSspDesc *	spr_ssp_free (SprSspDesc *ssp_des)
	Free all memory allocated by the signal processing routines. More...

void	spr_ssp_print_fi (SprStream fd, SprSspDesc ssp_des)

void	spr_ssp_print (SprStream fd, SprSspDesc ssp_des)

int	spr_ssp_reset (SprSspDesc ssp_des, SprStream fd, SprKeySet *keys)

SprSspDesc *	spr_ssp_setup (const char script_name, char *line_array)

int	spr_ssp_modstatus_do (SprSspDesc ssp_des, SprSspStatus action, SprMsgId *routine)

int	spr_ssp_modstatus_load (SprSspDesc ssp_des, const char fname)

int	spr_ssp_modstatus_save (SprSspDesc ssp_des, const char fname)

int	spr_ssp_aux_stream (SprSspDesc ssp_des, char name, const SprDT type, int vlen, void dest, char *optional_used)

int	spr_ssp_setup_END (SprSspInfo Info, const char descript, void aux_info)

int	spr_ssp_process_END (SprSspInfo Info, const void frame_in, void *frame_out)

int	spr_ssp_process (SprSspDesc ssp_des, void frame_in)

int	spr_ssp_flist (SprSspDesc ssp_des, void **res_mat, int start)

int	spr_ssp_fseek (SprSspDesc ssp_des, int new_pos, int nfr_proc, int mode, int skip_fseek, int skip_proc, int modify, SprStream fd, int reset_pos)

void	spr_ssp_help (SprStream *fd, int level)
	Print the syntax of all possible commands and routines. More...

int	spr_ssp_paste (SprMsgId Routine, SprSspInfo info, int action, const char *buffer,...)

int	spr_ssp_new_file (SprSspDesc ssp_des, const char obsdir, const char dfname, const char suffix)

int	spr_ssp_process_stream (SprSspDesc ssp_des, SprStream fdi, SprStream *fdo, int nfr)

Detailed Description

signal processing master routines

[Global_commands]
`.fshift <expr>`	`[matches expressions]`
Set the frame shift (only for a sample file). The frame shift can only be set before the first processing routine is called. If not specified, a 10 ms frame shift is used.
`.truncate [yes/no](no)`
Flag that affects the behaviour of the preprocessing when only a part of the file is processed (e.g. 'sigp -f 1:2'). The default behaviour (without '.truncate' flag) corresponds to preprocessing the whole file followed by a selection of the desired frames. If the flag is set, the preprocessing behaves as if the file was first truncated and then preprocessed.
`.trail [mirror/ignore/zero](ignore)`
If the last frame of a sample files is incomplete (file length is not an exact multiple of the frame shift), then pad the frame with zeros (or a mirrored version of the last samples), process the frame but do not write the frame out. This creates one more frame which contain some relevant data and which may result in somewhat beter output for modules which also take into account the right context of a frame such as time derivatives.
`.history <expr>`	`[matches expressions]`
Force a certain history length.
`.var <var> ...`
Define variables.
`.set <var=expr> ...`
Set a variable to a given value / evaluate an expression.
`.push keyset`
Copy the current key-set in a new one, save the old one for later use.
`.pop keyset`
Recall a key-set that have been saved earlier (LIFO-stack).
`.get_key <var> = <key>`
Set a 'string' variable to the content of a given key.
`.get_keyvalue <var> = <key>`
Set a variable to the numerical value of a given key.
`.set_key <key> [value:str/var] ...`
Set a key in the key-set. The value may be a variable or a plain string (no surrounding \"\\" allowed).
`.unset_key <key> ...`
Remove one or more keys from the key-set.
`.if <expr> goto <label>`	`[matches expressions]`
A conditional jump. An unconditional jump is created when <expr> equals 'true'. Only forward jumps are allowed. The expression may not contain white-space characters, and must be surrounded by brackets.
`.label <label_name>`
Indicates a possible jump location.
`.msg <error/warning/info> <txt> ...`
Give an error message. If the <error> mode is selected, the master setup (in fact, the first reset) will return with an error code, causing the main program to stop.
`.convert to <new_type:str/var>`
Convert the data to a given type. The type may be a variable or a plain string (no surrounding \"\\" allowed).
`.mix <start:step:repeat> ...`	`[matches expressions]`
Select parameters and/or rearrange the order of the parameters in the process buffer.
`.read <mc_begin/mc_end/begin/end> <file_name>`
Read a frame from a file. A '@' in the file name is replaced with the input file base name. The data can be inserted at the beginning or at the end of the frame in the process buffer, or can be intermixed (Multi Channel prefix) with the process buffer.
`.write <copy/move> <file_name> [start:step:repeat] ...`
Write a part of the frame in the process buffer to a given file. A '@' in the file name is replaced with the input file base name. If the <move> operation is chosen, the selected data is removed from the process buffer.
`.recall <begin/end> <copy/move> <buffer_name>`
Recall a previously stored frame from a named buffer. The data can be inserted at the beginning or at the end of the frame in the process buffer. If the <copy> operation is selected, the data is not removed from the named buffer, so it can be recalled again later on. The last recall operation must (re)<move> the data from the named buffer.
`.store <copy/move> <buffer_name> [start:step:repeat] ...`
Store a part of the process buffer to a named buffer for later use. If the <move> operation is selected, the selected data is also removed from the process buffer.
`.debug <debug_level> [parameter_selection] ...`
Echo the selected parameters to the debug system at the given level.

[Select_commands]
`COPY <begin/end> [start:step:repeat] ...`
Select a set of parameters that must be copied unmodified to the output frame for the current module. By default, no parameters are copied.
`PROCESS [start:step:repeat] ...`
Select the set of parameters that must be processed by the current module. Two COPYs may occur, one at the beginning and one at the end of the result frame. By default, all parameters are processed.

Date: 10/10/94

Author: Kris Demuynck

Functions

Detailed Description