chromium/third_party/opus/src/silk/VAD.c

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#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "main.h"
#include "stack_alloc.h"

/* Silk VAD noise level estimation */
# if !defined(OPUS_X86_MAY_HAVE_SSE4_1)
static OPUS_INLINE void silk_VAD_GetNoiseLevels(
    const opus_int32             pX[ VAD_N_BANDS ], /* I    subband energies                            */
    silk_VAD_state              *psSilk_VAD         /* I/O  Pointer to Silk VAD state                   */
);
#endif

/**********************************/
/* Initialization of the Silk VAD */
/**********************************/
opus_int silk_VAD_Init(                                         /* O    Return value, 0 if success                  */
    silk_VAD_state              *psSilk_VAD                     /* I/O  Pointer to Silk VAD state                   */
)
{ … }

/* Weighting factors for tilt measure */
static const opus_int32 tiltWeights[ VAD_N_BANDS ] = …;

/***************************************/
/* Get the speech activity level in Q8 */
/***************************************/
opus_int silk_VAD_GetSA_Q8_c(                                   /* O    Return value, 0 if success                  */
    silk_encoder_state          *psEncC,                        /* I/O  Encoder state                               */
    const opus_int16            pIn[]                           /* I    PCM input                                   */
)
{ … }

/**************************/
/* Noise level estimation */
/**************************/
# if  !defined(OPUS_X86_MAY_HAVE_SSE4_1)
static OPUS_INLINE
#endif
void silk_VAD_GetNoiseLevels(
    const opus_int32            pX[ VAD_N_BANDS ],  /* I    subband energies                            */
    silk_VAD_state              *psSilk_VAD         /* I/O  Pointer to Silk VAD state                   */
)
{ … }