From 31c6f6f65c0ed5a894e26ce44ab0c3e89c82b9a2 Mon Sep 17 00:00:00 2001 From: Ben Avison Date: Mon, 15 Jul 2013 18:28:11 +0100 Subject: fmtconvert: Add a new method, int32_to_float_fmul_array8 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This is similar to int32_to_float_fmul_scalar, but loads a new scalar multiplier every 8 input samples. This enables the use of much larger input arrays, which is important for pipelining on some CPUs (such as ARMv6). Signed-off-by: Martin Storsjö --- libavcodec/fmtconvert.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'libavcodec/fmtconvert.h') diff --git a/libavcodec/fmtconvert.h b/libavcodec/fmtconvert.h index a28af36c21..bd833efec6 100644 --- a/libavcodec/fmtconvert.h +++ b/libavcodec/fmtconvert.h @@ -38,6 +38,22 @@ typedef struct FmtConvertContext { void (*int32_to_float_fmul_scalar)(float *dst, const int32_t *src, float mul, int len); + /** + * Convert an array of int32_t to float and multiply by a float value from another array, + * stepping along the float array once for each 8 integers. + * @param c pointer to FmtConvertContext. + * @param dst destination array of float. + * constraints: 16-byte aligned + * @param src source array of int32_t. + * constraints: 16-byte aligned + * @param mul source array of float multipliers. + * @param len number of elements to convert. + * constraints: multiple of 8 + */ + void (*int32_to_float_fmul_array8)(struct FmtConvertContext *c, + float *dst, const int32_t *src, + const float *mul, int len); + /** * Convert an array of float to an array of int16_t. * -- cgit v1.2.3