This file provides general helper functions.
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#include <stdint.h>
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int32_t | smallest_int (int32_t a, int32_t b) |
| smallest_int
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uint32_t | _transform_16_to_32 (void *src, uint32_t src_len, void *dst, uint32_t dst_len) |
| Extend 16 bit per sample to 32bit per sample.
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uint32_t | _transform_24_to_32 (void *src, uint32_t src_len, void *dst, uint32_t dst_len) |
| Extend 24 bit per sample to 32bit per sample.
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uint32_t | _transform_32_to_24 (void *src, uint32_t src_len, void *dst, uint32_t dst_len) |
| Compress 32 bit per sample to 24 bit per sample.
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uint32_t | _transform_32_to_16 (void *src, uint32_t src_len, void *dst, uint32_t dst_len) |
| Compress 32 bit per sample to 16 bit per sample.
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uint32_t | data_copy_32bits (void *src, uint32_t src_len, void *dst, uint32_t dst_len) |
| Equivalent to a memcpy used with src and dest size validation to determine the amount of bytes to copy.
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uint32_t | _interleave_16_to_32 (void *src, uint32_t src_len, void *dst, uint32_t dst_len) |
| Used to interleave samples from two input buffers on an output buffer.
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uint32_t | _interleave_24_to_32 (void *src, uint32_t src_len, void *dst, uint32_t dst_len) |
| Used to interleave samples from two input buffers on an output buffer.
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uint32_t | _interleave_32bits (void *src, uint32_t src_len, void *dst, uint32_t dst_len) |
| Used to interleave samples from two input buffers on an output buffer.
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◆ smallest_int()
int32_t smallest_int |
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int32_t | a, |
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int32_t | b ) |
Function to determine the smallest of two integers.
- Parameters
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a | first integer |
b | second integer |
- Returns
- value of the smallest integer
◆ _transform_16_to_32()
uint32_t _transform_16_to_32 |
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void * | src, |
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uint32_t | src_len, |
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void * | dst, |
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uint32_t | dst_len ) |
- Parameters
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src | [in] 16bit sample's buffer |
src_len | [in] Number of bytes in the input |
dst | [OUT] Output buffer where the 32-bit data is going to be written |
dst_len | [in] Maximum num of bytes that should be written on the output |
- Returns
- uint32_t Number of bytes that were written in the destination buffer
This function uses src_len as the number byes and the number of bytes in dst_len to determine how many bytes will be copied in the output buffer dst. The return value will be the number in bytes that was copied to the out buffer
◆ _transform_24_to_32()
uint32_t _transform_24_to_32 |
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void * | src, |
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uint32_t | src_len, |
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void * | dst, |
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uint32_t | dst_len ) |
- Parameters
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src | [in] 24 bit sample's buffer |
src_len | [in] Number of bytes in the input |
dst | [OUT] Output buffer where the 32-bit data is going to be written |
dst_len | [in] Maximum num of bytes that should be written on the output |
- Returns
- uint32_t Number of bytes that were written in the destination buffer
This function uses src_len as the number byes and the number of bytes in dst_len to determine how many bytes will be copied in the output buffer dst. The return value will be the number in bytes that was copied to the out buffer
◆ _transform_32_to_24()
uint32_t _transform_32_to_24 |
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void * | src, |
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uint32_t | src_len, |
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void * | dst, |
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uint32_t | dst_len ) |
- Parameters
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src | [in] 32 bit sample's buffer |
src_len | [in] Number of bytes in the input |
dst | [OUT] Output buffer where the 24-bit data is going to be written |
dst_len | [in] Maximum num of bytes that should be written on the output |
- Returns
- uint32_t Number of bytes that were written in the destination buffer
This function uses src_len as the number byes and the number of bytes in dst_len to determine how many bytes will be copied in the output buffer dst. The return value will be the number in bytes that was copied to the out buffer
◆ _transform_32_to_16()
uint32_t _transform_32_to_16 |
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void * | src, |
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uint32_t | src_len, |
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void * | dst, |
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uint32_t | dst_len ) |
- Parameters
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src | [in] 32 bit sample's buffer |
src_len | [in] Number of bytes in the input |
dst | [OUT] Output buffer where the 16-bit data is going to be written |
dst_len | [in] Maximum num of bytes that should be written on the output |
- Returns
- uint32_t Number of bytes that were written in the destination buffer
This function uses src_len as the number byes and the number of bytes in dst_len to determine how many bytes will be copied in the output buffer dst. The return value will be the number in bytes that was copied to the out buffer
◆ data_copy_32bits()
uint32_t data_copy_32bits |
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void * | src, |
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uint32_t | src_len, |
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void * | dst, |
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uint32_t | dst_len ) |
- Parameters
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src | [in] 32 bit sample's buffer |
src_len | [in] Number of bytes in the input |
dst | [OUT] Output buffer where the 32-bit data is going to be written |
dst_len | [in] Maximum num of bytes that should be written on the output |
- Returns
- uint32_t Number of bytes that were written in the destination buffer
◆ _interleave_16_to_32()
uint32_t _interleave_16_to_32 |
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void * | src, |
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uint32_t | src_len, |
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void * | dst, |
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uint32_t | dst_len ) |
- Parameters
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src | [in] 16 bit sample's buffer |
src_len | [in] Number of bytes in the input. |
dst | [OUT] Output buffer where the 32-bit data is going to be written |
dst_len | [in] Maximum num of bytes that should be written on the output |
- Returns
- uint32_t Number of bytes that were written in the destination buffer
◆ _interleave_24_to_32()
uint32_t _interleave_24_to_32 |
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void * | src, |
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uint32_t | src_len, |
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void * | dst, |
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uint32_t | dst_len ) |
- Parameters
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src | [in] 24 bit sample's buffer |
src_len | [in] Number of bytes in the input. |
dst | [OUT] Output buffer where the 32-bit data is going to be written |
dst_len | [in] Maximum num of bytes that should be written on the output |
- Returns
- uint32_t Number of bytes that were written in the destination buffer
◆ _interleave_32bits()
uint32_t _interleave_32bits |
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void * | src, |
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uint32_t | src_len, |
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void * | dst, |
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uint32_t | dst_len ) |
- Parameters
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src | [in] 32 bit sample's buffer |
src_len | [in] Number of bytes in the input. Applies to both input buffers |
dst | [OUT] Output buffer where the 32-bit data is going to be written |
dst_len | [in] Maximum num of bytes that should be written on the output |
- Returns
- uint32_t Number of bytes that were written in the destination buffer