Do our own resampling

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----
-layout: default
----
-
-# Full API
-
-The full API consists of the following functions :
-
-```c
-SRC_STATE* src_new (int converter_type, int channels, int *error) ;
-SRC_STATE* src_delete (SRC_STATE *state) ;
-
-int src_process (SRC_STATE *state, SRC_DATA *data) ;
-int src_reset (SRC_STATE *state) ;
-int src_set_ratio (SRC_STATE *state, double new_ratio) ;
-```
-
-## Initialisation
-
-```c
-SRC_STATE* src_new (int converter_type, int channels, int *error) ;
-```
-
-The **src\_new** function returns an anonymous pointer to a sample rate
-converter object, src\_state. If an error occurs the function returns a
-NULL pointer and fills in the error value pointed to by the **error**
-pointer supplied by the caller. The converter must be one of the
-supplied converter types documented [here](api_misc.md#converters).
-
-## Cleanup
-
-```c
-SRC_STATE* src_delete (SRC_STATE *state) ;
-```
-
-The **src\_delete** function frees up all memory allocated for the given
-sample rate converter object and returns a NULL pointer. The caller is
-responsible for freeing any memory passed to the sample rate converter
-via the pointer to the **SRC\_DATA** struct.
-
-## Process
-
-```c
-int src_process (SRC_STATE *state, SRC_DATA *data) ;
-```
-
-The **src\_process** function processes the data provided by the caller
-in an **SRC\_DATA** struct using the sample rate converter object
-specified by the **SRC\_STATE** pointer. When operating on streaming
-data, this function can be called over and over again, with each new
-call providing new input data and returning new output data.
-
-The **SRC\_DATA** struct passed as the second parameter to the
-**src\_process** function has the following fields:
-
-```c
-typedef struct
-{   const float  *data_in;
-    float *data_out;
-
-    long   input_frames, output_frames ;
-    long   input_frames_used, output_frames_gen ;
-
-    int    end_of_input ;
-
-    double src_ratio ;
-} SRC_DATA ;
-```
-
-The fields of this struct which must be filled in by the caller are:
-
-data_in
-: A pointer to the input data samples.
-
-input_frames
-: The number of frames of data pointed to by data_in.
-
-data_out
-: A pointer to the output data samples.
-
-output_frames
-: Maximum number of frames pointer to by data_out.
-
-src_ratio
-: Equal to output_sample_rate / input_sample_rate.
-
-end_of_input
-: Equal to 0 if more input data is available and 1 otherwise.
-
-Note that the data\_in and data\_out arrays may not overlap. If they do,
-the library will return an error code.
-
-When the **src\_process** function returns **output\_frames\_gen** will
-be set to the number of output frames generated and
-**input\_frames\_used** will be set to the number of input frames
-consumed to generate the provided number of output frames.
-
-The **src\_process** function returns non-zero if an error occurs. The
-non-zero error return value can be decoded into a text string using the
-function documented [here](api_misc.md#error-reporting).
-
-## Reset
-
-```c
-int src_reset (SRC_STATE *state) ;
-```
-
-The **src\_reset** function resets the internal state of the sample rate
-converter object to the same state it had immediately after its creation
-using **src\_new**. This should be called whenever a sample rate
-converter is to be used on two separate, unrelated pieces of audio.
-
-## Clone
-
-```c
-SRC_STATE* src_clone (SRC_STATE *state, int *error) ;
-```
-
-The **src_clone** function creates a copy of the internal state of the sample
-rate converter object. The output of the next call to **src\_process** will be
-identical for both the original and cloned state (given the same **SRC_DATA**
-input). This could be used to later resume sample rate conversion at a specific
-location in a stream with the same state, which may be useful in real-time
-applications.
-
-If an error occurs the function returns a NULL pointer and fills in the
-error value pointed to by the **error** pointer supplied by the caller.
-
-## Set Ratio
-
-```c
-int src_set_ratio (SRC_STATE *state, double new_ratio) ;
-```
-
-When using the **src_process** or **src_callback_process** APIs and updating the
-**src_ratio** field of the **SRC_STATE** struct, the library will try to
-smoothly transition between the conversion ratio of the last call and the
-conversion ratio of the current call.
-
-If the user wants to bypass this smooth transition and achieve a step response in
-the conversion ratio, the **src_set_ratio** function can be used to set the
-starting conversion ratio of the next call to **src_process** or
-**src_callback_process**.
-
-This function returns non-zero on error and the error return value can be
-decoded into a text string using the function documented [here](api_misc.md#error-reporting).