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author | Guillaume Poirier <gpoirier@mplayerhq.hu> | 2008-12-17 09:47:06 +0000 |
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committer | Guillaume Poirier <gpoirier@mplayerhq.hu> | 2008-12-17 09:47:06 +0000 |
commit | 5f51afd6024015834a993417324c8a44dd0ed744 (patch) | |
tree | 0f2e36c19b089d0a04152e83a91ab9b30c213e14 /libavcodec/ppc | |
parent | 18cb36fd57f78fbecc93e5f1326d1c31ddd019f1 (diff) | |
download | ffmpeg-streaming-5f51afd6024015834a993417324c8a44dd0ed744.zip ffmpeg-streaming-5f51afd6024015834a993417324c8a44dd0ed744.tar.gz |
add AltiVec implementation of int32_to_float_fmul_scalar
Originally committed as revision 16186 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/ppc')
-rw-r--r-- | libavcodec/ppc/float_altivec.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/libavcodec/ppc/float_altivec.c b/libavcodec/ppc/float_altivec.c index 1f39d8f..e27ac03 100644 --- a/libavcodec/ppc/float_altivec.c +++ b/libavcodec/ppc/float_altivec.c @@ -150,6 +150,30 @@ static void vector_fmul_add_add_altivec(float *dst, const float *src0, } +static void int32_to_float_fmul_scalar_altivec(float *dst, const int *src, float mul, int len) +{ + union { + vector float v; + float s[4]; + } mul_u; + int i; + vector float src1, src2, dst1, dst2, mul_v, zero; + + zero = (vector float)vec_splat_u32(0); + mul_u.s[0] = mul; + mul_v = vec_splat(mul_u.v, 0); + + for(i=0; i<len; i+=8) { + src1 = vec_ctf(vec_ld(0, src+i), 0); + src2 = vec_ctf(vec_ld(16, src+i), 0); + dst1 = vec_madd(src1, mul_v, zero); + dst2 = vec_madd(src2, mul_v, zero); + vec_st(dst1, 0, dst+i); + vec_st(dst2, 16, dst+i); + } +} + + static vector signed short float_to_int16_one_altivec(const float *src) { @@ -240,6 +264,7 @@ void float_init_altivec(DSPContext* c, AVCodecContext *avctx) c->vector_fmul = vector_fmul_altivec; c->vector_fmul_reverse = vector_fmul_reverse_altivec; c->vector_fmul_add_add = vector_fmul_add_add_altivec; + c->int32_to_float_fmul_scalar = int32_to_float_fmul_scalar_altivec; if(!(avctx->flags & CODEC_FLAG_BITEXACT)) { c->float_to_int16 = float_to_int16_altivec; c->float_to_int16_interleave = float_to_int16_interleave_altivec; |