#include <sent/stddefs.h>
zc-e.cのインクルード依存関係図

マクロ定義 | |
| #define | UNDEF 2 |
| Undefined mark used for sign | |
| #define | POSITIVE 1 |
| Positive mark used for sign | |
| #define | NEGATIVE -1 |
| Negative mark used for sign | |
関数 | |
| void | init_count_zc_e (int c_trigger, int c_length, int c_offset) |
| void | end_count_zc_e () |
| int | count_zc_e (SP16 *buf, int step) |
| int | count_zc_e_level (SP16 *buf, int step, int *levelp) |
| void | zc_copy_buffer (SP16 *newbuf, int *len) |
変数 | |
| static int | trigger |
| Level threshold | |
| static int | length |
| Cycle buffer size = number of samples to hold | |
| static int | offset |
| Static data DC offset | |
| static int * | is_zc |
| Zero-crossing point flag list | |
| static SP16 * | data |
| Data cycle buffer | |
| static int | zero_cross |
| Total zerocross num in data | |
| static int | sign |
| Current sign of sample for zerocross counting | |
| static int | is_trig |
| Triggering sign | |
| static int | top |
| Current pointer of buffer | |
| static int | valid_len |
| Valid samples in buffer (for short input) | |
zc-e.c で定義されています。
| void init_count_zc_e | ( | int | c_trigger, | |
| int | c_length, | |||
| int | c_offset | |||
| ) |
Initialize all parameters and buffers for zero-cross counting.
| c_trigger | [in] Tgigger level threshold | |
| c_length | [in] Cycle buffer size = Number of samples to hold | |
| c_offset | [in] Static DC offset of input data |
参照元 adin_cut().
| void end_count_zc_e | ( | ) |
| int count_zc_e | ( | SP16 * | buf, | |
| int | step | |||
| ) |
Adding buf[0..step-1] to the cycle buffer and update the count of zero cross. Also swap them with the oldest ones in the cycle buffer.
| buf | [I/O] new samples given, and swapped samples will be returned. | |
| step | [in] length of above. |
参照元 adin_cut().
| int count_zc_e_level | ( | SP16 * | buf, | |
| int | step, | |||
| int * | levelp | |||
| ) |
Adding buf[0..step-1] to the cycle buffer and update the count of zero cross. Also swap them with the oldest ones in the cycle buffer. Also get the maximum level in the cycle buffer.
| buf | [I/O] new samples, will be swapped by old samples when returned. | |
| step | [in] length of above. | |
| levelp | [out] maximum level in the cycle buffer. |
| void zc_copy_buffer | ( | SP16 * | newbuf, | |
| int * | len | |||
| ) |
Flush samples in the current cycle buffer.
| newbuf | [out] the samples in teh cycle buffer will be written here. | |
| len | [out] length of above. |
参照元 adin_cut().
1.5.0