freertos: release the generic version source code

freertos runs on the second core (small one) of the CPU

freertos/cvitek/common/include/cv1835/cvi_resampler_api.h

@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) Cvitek Co., Ltd. 2019-2020. All rights reserved.
+ *
+ * File Name: include/cvi_resampler_api.h
+ * Description: basic audio decoder  api for application layer
+ */
+
+
+#ifndef _CVI_RESAMPLER_API_H_
+#define _CVI_RESAMPLER_API_H_
+
+#include "cvi_type.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define MAXFRAMESIZE 2048
+
+CVI_VOID *CVI_Resampler_Create(CVI_S32 s32Inrate, CVI_S32 s32Outrate,
+			       CVI_S32 s32Chans);
+
+
+/**************************************************************************************
+ * Function:    CVI_Resampler_Process
+ *
+ * Description: Resample pcm data to specific samplerate, only for interlaced format
+ *
+ * Inputs:      inst: valid Resampler instance pointer (HResampler)
+ *              inbuf:   pointer to inputbuf
+ *              insamps: input number of sample pointers
+ * Outputs:     outbuf:  pointer to outputbuf
+ *
+ * Return:      output sample number per-channel
+ * Notes:       sure insamps < MAXFRAMESIZE
+
+
+ **************************************************************************************/
+CVI_S32 CVI_Resampler_Process(CVI_VOID *inst, CVI_S16 *s16Inbuf,
+			      CVI_S32 s32Insamps, CVI_S16 *s16Outbuf);
+
+
+/**************************************************************************************
+ * Function:    CVI_Resampler_Destroy
+ *
+ * Description: free platform-specific data allocated by ResamplerCreate
+ *
+ * Inputs:      valid Resampler instance pointer (HResampler)
+ * Outputs:     none
+ *
+ * Return:      none
+ **************************************************************************************/
+CVI_VOID CVI_Resampler_Destroy(CVI_VOID *inst);
+
+
+/*******************************************************************************
+ * Function:	CVI_Resampler_GetMaxOutputNum
+ *
+ * Description: Caculate max output number at specific input number
+ *
+ * Inputs:		inst:	  valid Resampler instance pointer (CVI_HANDLE)
+ *				insamps:  input data number per-channel, insamps must be even
+ * Outputs: none
+ * Return:		>=0:	  Success, return the max output number per-channel
+ *				other:	  Fail, return error code
+ * Notes:
+ * 1  if stereo(chans==2), sure insamps%2 == 0
+ ******************************************************************************/
+CVI_S32 CVI_Resampler_GetMaxOutputNum(CVI_VOID *inst, CVI_S32 s32Insamps);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+
+
+#endif