diff options
Diffstat (limited to 'libaf/af.h')
| -rw-r--r-- | libaf/af.h | 60 |
1 files changed, 19 insertions, 41 deletions
diff --git a/libaf/af.h b/libaf/af.h index 73c7eefe1c..7c37f39c75 100644 --- a/libaf/af.h +++ b/libaf/af.h @@ -1,3 +1,5 @@ +#include "control.h" + #ifndef __aop_h__ #define __aop_h__ @@ -53,10 +55,12 @@ typedef struct af_instance_s the length of the buffer. */ }af_instance_t; -// Initialization types -#define SLOW 1 -#define FAST 2 -#define FORCE 3 +// Initialization flags +#define AF_INIT_AUTO 0x00000000 +#define AF_INIT_SLOW 0x00000001 +#define AF_INIT_FAST 0x00000002 +#define AF_INIT_FORCE 0x00000003 +#define AF_INIT_TYPE_MASK 0x00000003 // Configuration switches typedef struct af_cfg_s{ @@ -79,43 +83,6 @@ typedef struct af_stream_s }af_stream_t; /********************************************* -// Control parameters -*/ - -/* The control system is divided into 3 levels - mandatory calls - all filters must answer to all of these - optional calls - are optional - filter specific calls - applies only to some filters -*/ - -#define AF_CONTROL_MANDATORY_BASE 0 -#define AF_CONTROL_OPTIONAL_BASE 100 -#define AF_CONTROL_FILTER_SPECIFIC_BASE 200 - -// MANDATORY CALLS - -/* Reinitialize filter. The optional argument contains the new - configuration in form of a af_data_t struct. If the filter does not - support the new format the struct should be changed and AF_FALSE - should be returned. If the incoming and outgoing data streams are - identical the filter can return AF_DETACH. This will remove the - filter. */ -#define AF_CONTROL_REINIT 1 + AF_CONTROL_MANDATORY_BASE - -// OPTIONAL CALLS - - -// FILTER SPECIFIC CALLS - -// Set output rate in resample -#define AF_CONTROL_RESAMPLE 1 + AF_CONTROL_FILTER_SPECIFIC_BASE -// Set output format in format -#define AF_CONTROL_FORMAT 2 + AF_CONTROL_FILTER_SPECIFIC_BASE -// Set number of output channels in channels -#define AF_CONTROL_CHANNELS 3 + AF_CONTROL_FILTER_SPECIFIC_BASE -// Set delay length in delay -#define AF_CONTROL_SET_DELAY_LEN 4 + AF_CONTROL_FILTER_SPECIFIC_BASE -/********************************************* // Return values */ @@ -129,7 +96,9 @@ typedef struct af_stream_s +/********************************************* // Export functions +*/ /* Initialize the stream "s". This function creates a new fileterlist if nessesary according to the values set in input and output. Input @@ -201,6 +170,7 @@ int af_lencalc(frac_t mul, af_data_t* data); #define RESIZE_LOCAL_BUFFER(a,d)\ ((a->data->len < af_lencalc(a->mul,d))?af_resize_local_buffer(a,d):AF_OK) +/* Some other useful macro definitions*/ #ifndef min #define min(a,b)(((a)>(b))?(b):(a)) #endif @@ -209,4 +179,12 @@ int af_lencalc(frac_t mul, af_data_t* data); #define max(a,b)(((a)>(b))?(a):(b)) #endif +#ifndef clamp +#define clamp(a,min,max) (((a)>(max))?(max):(((a)<(min))?(min):(a))) +#endif + +#ifndef sign +#define sign(a) (((x)>0)?(1):(-1)) +#endif + #endif |