diff options
Diffstat (limited to 'libavcodec/ac3dsp.c')
| -rw-r--r-- | libavcodec/ac3dsp.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/libavcodec/ac3dsp.c b/libavcodec/ac3dsp.c index 4d9db9be50..9bfa7300e3 100644 --- a/libavcodec/ac3dsp.c +++ b/libavcodec/ac3dsp.c @@ -85,13 +85,30 @@ static void ac3_rshift_int32_c(int32_t *src, unsigned int len, } while (len > 0); } -av_cold void ff_ac3dsp_init(AC3DSPContext *c) +static void float_to_fixed24_c(int32_t *dst, const float *src, unsigned int len) +{ + const float scale = 1 << 24; + do { + *dst++ = lrintf(*src++ * scale); + *dst++ = lrintf(*src++ * scale); + *dst++ = lrintf(*src++ * scale); + *dst++ = lrintf(*src++ * scale); + *dst++ = lrintf(*src++ * scale); + *dst++ = lrintf(*src++ * scale); + *dst++ = lrintf(*src++ * scale); + *dst++ = lrintf(*src++ * scale); + len -= 8; + } while (len > 0); +} + +av_cold void ff_ac3dsp_init(AC3DSPContext *c, int bit_exact) { c->ac3_exponent_min = ac3_exponent_min_c; c->ac3_max_msb_abs_int16 = ac3_max_msb_abs_int16_c; c->ac3_lshift_int16 = ac3_lshift_int16_c; c->ac3_rshift_int32 = ac3_rshift_int32_c; + c->float_to_fixed24 = float_to_fixed24_c; if (HAVE_MMX) - ff_ac3dsp_init_x86(c); + ff_ac3dsp_init_x86(c, bit_exact); } |