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.c | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'libavcodec/fmtconvert.c') diff --git a/libavcodec/fmtconvert.c b/libavcodec/fmtconvert.c index 54f70305df..63f62c396a 100644 --- a/libavcodec/fmtconvert.c +++ b/libavcodec/fmtconvert.c @@ -32,6 +32,15 @@ static void int32_to_float_fmul_scalar_c(float *dst, const int32_t *src, dst[i] = src[i] * mul; } +static void int32_to_float_fmul_array8_c(FmtConvertContext *c, float *dst, + const int32_t *src, const float *mul, + int len) +{ + int i; + for (i = 0; i < len; i += 8) + c->int32_to_float_fmul_scalar(&dst[i], &src[i], *mul++, 8); +} + static av_always_inline int float_to_int16_one(const float *src){ return av_clip_int16(lrintf(*src)); } @@ -81,6 +90,7 @@ void ff_float_interleave_c(float *dst, const float **src, unsigned int len, av_cold void ff_fmt_convert_init(FmtConvertContext *c, AVCodecContext *avctx) { c->int32_to_float_fmul_scalar = int32_to_float_fmul_scalar_c; + c->int32_to_float_fmul_array8 = int32_to_float_fmul_array8_c; c->float_to_int16 = float_to_int16_c; c->float_to_int16_interleave = float_to_int16_interleave_c; c->float_interleave = ff_float_interleave_c; -- cgit v1.2.3