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Add SFC_GET_LOOP_INFO and SF_LOOP_INFO struct.

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This commit is contained in:
Erik de Castro Lopo 2004-10-31 12:48:25 +00:00
parent 24e06336be
commit 9e20edb51e
1 changed files with 22 additions and 1 deletions
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21
src/sndfile.h.in
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@ -171,6 +171,8 @@ enum
SFC_GET_INSTRUMENT = 0x10D0,
SFC_SET_INSTRUMENT = 0x10D1,
SFC_GET_LOOP_INFO = 0x10E0,
/* Following commands for testing only. */
SFC_TEST_IEEE_FLOAT_REPLACE = 0x6001,
@ -327,6 +329,25 @@ enum
SF_LOOP_BACKWARD
} ;
/* Struct used to retrieve loop information from a file.*/
typedef struct
{
short time_sig_num ; /* any positive integer >0 */
short time_sig_den ; /* any positive power of 2 >0 */
int loop_mode ; /* see SF_LOOP enum */
int num_beats ; /* this is NOT the amount of quarter notes !!!*/
/* a full bar of 4/4 is 4 beats */
/* a full bar of 7/8 is 7 beats */
float bpm ; /* suggestion, as it can be calculated using other fields:*/
/* file's lenght, file's sampleRate and our time_sig_den*/
/* -> bpms are always the amount of _quarter notes_ per minute */
int root_key ; /* MIDI note, or -1 for None */
int future [6] ;
} SF_LOOP_INFO ;
/* Open the specified file for read, write or both. On error, this will
** return a NULL pointer. To find the error number, pass a NULL SNDFILE
** to sf_perror () or sf_error_str ().