#include <sent/stddefs.h>
#include <sent/speech.h>
#include <sent/adin.h>
Go to the source code of this file.
Defines | |
| #define | MYREAD(A, B, C, D) if (!myread(A, B, C, D)) {jlog("Error: adin_file: file is corrupted\n"); return -1;} |
| Abbreviation for header reading. | |
Functions | |
| static boolean | myread (void *buf, size_t unitbyte, int unitnum, FILE *fp) |
| Read a header value from WAVE file with endian conversion. | |
| static boolean | setup_wav (FILE *fp) |
| Parse header part of a WAVE file to prepare for data reading. | |
| static boolean | adin_file_open (char *filename) |
| Open input file. | |
| static boolean | adin_file_close () |
| Close the input file. | |
| boolean | adin_file_standby (int freq, void *arg) |
| Initialization: if listfile is specified, open it here. | |
| boolean | adin_file_begin () |
| Begin reading audio data from a file. | |
| int | adin_file_read (SP16 *buf, int sampnum) |
| Try to read sampnum samples and returns actual sample num recorded. | |
| boolean | adin_file_end () |
| End recording. | |
| boolean | adin_stdin_standby (int freq, void *arg) |
| Initialization for speech input via stdin. | |
| boolean | adin_stdin_begin () |
| Begin reading audio data from stdin. | |
| int | adin_stdin_read (SP16 *buf, int sampnum) |
| Try to read sampnum samples and returns actual sample num recorded. | |
| char * | adin_file_get_current_filename () |
| A tiny function to get current input raw speech file name. | |
Variables | |
| static FILE * | gfp |
| File pointer of current input file. | |
| static boolean | wav_p |
| TRUE if input is WAVE file, FALSE if RAW file. | |
| static int | maxlen |
| Number of samples, described in the header of WAVE file. | |
| static int | nowlen |
| Current number of read samples. | |
| static SP16 | pre_data [2] |
| When file input, the first 4 bytes of the file are read at first to identify whether it is WAVE file format. | |
| static boolean | has_pre |
| TRUE if pre_data is available. | |
| static unsigned int | sfreq |
| Sampling frequency in Hz, specified by adin_standby(). | |
| static char | speechfilename [MAXPATHLEN] |
| Buffer to hold input file name. | |
| static boolean | from_file |
| TRUE if list file is used to read input filename. | |
| static FILE * | fp_list |
| File pointer used for the listfile. | |
Functions to get input from wave file or standard input. Two file formats are supported, Microsoft WAVE format and RAW (no header) format. The audio format should be uncompressed PCM, 16bit, monoral. On RAW file input, the data byte order must be in big endian.
The sampling rate of input file must be equal to the system requirement value which is specified by adin_standby() . For WAVE format file, the sampling rate of the input file described in its header is checked against the system value, and rejected if not matched. But for RAW format file, no check will be applied since it has no header information about the recording sampling rate, so be careful of the sampling rate setting.
When file input mode, the file name will be read from standard input. If a filelist file is specified, the file names are read from the file sequencially instead.
When compiled with libsndfile support, the functions in adin_sndfile.c is used for file input instead of functions below.
In this file, assume sizeof(int)=4, sizeof(short)=2
Definition in file adin_file.c.
| static boolean myread | ( | void * | buf, | |
| size_t | unitbyte, | |||
| int | unitnum, | |||
| FILE * | fp | |||
| ) | [static] |
Read a header value from WAVE file with endian conversion.
If required number of data has not been read, it produces error.
| buf | [out] Pointer to store read data | |
| unitbyte | [in] Unit size | |
| unitnum | [in] Required number of units to read | |
| fp | [in] File pointer |
Definition at line 106 of file adin_file.c.
Referenced by CMN_load_from_file(), new_SS_load_from_file(), read_param(), and setup_wav().
| static boolean setup_wav | ( | FILE * | fp | ) | [static] |
Parse header part of a WAVE file to prepare for data reading.
The audio format will be checked here, and data length is also read from the header. Then the pointer is moved to the start point of data part.
When called, the file pointer should be located just after the first 4 bytes, "RIFF". It also sets maxlen and nowlen .
| fp | [in] File pointer |
Definition at line 134 of file adin_file.c.
Referenced by adin_file_open().
| static boolean adin_file_open | ( | char * | filename | ) | [static] |
Open input file.
Open the file, check the file format, and set the file pointer to gfp .
| filename | [in] file name, or NULL for standard input |
Definition at line 243 of file adin_file.c.
Referenced by adin_file_begin(), and adin_stdin_begin().
| static boolean adin_file_close | ( | ) | [static] |
Close the input file.
Definition at line 298 of file adin_file.c.
Referenced by adin_file_end(), and adin_file_read().
| boolean adin_file_standby | ( | int | freq, | |
| void * | arg | |||
| ) |
Initialization: if listfile is specified, open it here.
| freq | [in] required sampling frequency. | |
| arg | [in] file name of listfile, or NULL if not use |
Definition at line 322 of file adin_file.c.
Referenced by adin_select().
| boolean adin_file_begin | ( | ) |
Begin reading audio data from a file.
If listfile was specified in adin_file_standby(), the next filename will be read from the listfile. Otherwise, the filename will be obtained from stdin. Then the file will be opened here.
Definition at line 352 of file adin_file.c.
Referenced by adin_select().
| int adin_file_read | ( | SP16 * | buf, | |
| int | sampnum | |||
| ) |
Try to read sampnum samples and returns actual sample num recorded.
| buf | [out] samples obtained in this function | |
| sampnum | [in] wanted number of samples to be read |
Definition at line 393 of file adin_file.c.
Referenced by adin_select().
| boolean adin_file_end | ( | ) |
End recording.
Definition at line 440 of file adin_file.c.
Referenced by adin_select().
| boolean adin_stdin_standby | ( | int | freq, | |
| void * | arg | |||
| ) |
Initialization for speech input via stdin.
| freq | [in] required sampling frequency. | |
| arg | dummy, ignored |
Definition at line 456 of file adin_file.c.
Referenced by adin_select().
| boolean adin_stdin_begin | ( | ) |
Begin reading audio data from stdin.
Definition at line 469 of file adin_file.c.
Referenced by adin_select().
| int adin_stdin_read | ( | SP16 * | buf, | |
| int | sampnum | |||
| ) |
Try to read sampnum samples and returns actual sample num recorded.
| buf | [out] samples obtained in this function | |
| sampnum | [in] wanted number of samples to be read |
Definition at line 493 of file adin_file.c.
Referenced by adin_select().
| char* adin_file_get_current_filename | ( | ) |
A tiny function to get current input raw speech file name.
Definition at line 534 of file adin_file.c.
Referenced by j_get_current_filename().
When file input, the first 4 bytes of the file are read at first to identify whether it is WAVE file format.
This work area is used to keep back the 4 bytes if the input is actually a RAW format.
Definition at line 83 of file adin_file.c.
Referenced by adin_file_open(), adin_file_read(), and adin_stdin_read().
1.5.4