sample_rate_converter_process()

int sample_rate_converter_process	(	struct sample_rate_converter_ctx *	ctx,
		enum sample_rate_converter_filter	filter,
		void const *const	input,
		size_t	input_size,
		uint32_t	input_sample_rate,
		void *const	output,
		size_t	output_size,
		size_t *	output_written,
		uint32_t	output_sample_rate
	)

#include <include/sample_rate_converter.h>

Process input samples and produce output samples with new sample rate.

Takes samples with the input sample rate, and converts them to the new requested sample rate by filtering the samples before adding or removing samples. The context for the sample rate conversion does not need to be initialized before calling process, and if any parameters change between calls the context will be re-inititalized. As the process has requirements for the number of input samples based on the conversion ratio, the module will buffer both input and output bytes when needed to meet this criteria.

Parameters

[in,out]	ctx	Pointer to the sample rate conversion context.
[in]	filter	Filter type to be used for the conversion.
[in]	input	Pointer to samples to process.
[in]	input_size	Size of the input in bytes.
[in]	input_sample_rate	Sample rate of the input bytes.
[out]	output	Array that output will be written.
[in]	output_size	Size of the output array in bytes.
[out]	output_written	Number of bytes written to output.
[in]	output_sample_rate	Sample rate of output.

Return values

0	On success.
-EINVAL	Invalid parameters for sample rate conversion.
-EFAULT	Output ring buffer has either not enough bytes to output, or not enough space to store bytes.