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x86/ac3dsp: add ff_float_to_fixed24_avx()

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Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer 2023-11-22 16:25:54 -03:00
parent d8b1a34433
commit e40ea9f34b
4 changed files with 32 additions and 4 deletions
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4
libavcodec/ac3dsp.h
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@ -47,9 +47,9 @@ typedef struct AC3DSPContext {
* [-(1<<24),(1<<24)]
*
* @param dst destination array of int32_t.
* constraints: 16-byte aligned
* constraints: 32-byte aligned
* @param src source array of float.
* constraints: 16-byte aligned
* constraints: 32-byte aligned
* @param len number of elements to convert.
* constraints: multiple of 32 greater than zero
*/

4
libavcodec/ac3enc_template.c
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@ -110,9 +110,9 @@ static void apply_mdct(AC3EncodeContext *s)
*/
static void apply_channel_coupling(AC3EncodeContext *s)
{
LOCAL_ALIGNED_16(CoefType, cpl_coords, [AC3_MAX_BLOCKS], [AC3_MAX_CHANNELS][16]);
LOCAL_ALIGNED_32(CoefType, cpl_coords, [AC3_MAX_BLOCKS], [AC3_MAX_CHANNELS][16]);
#if AC3ENC_FLOAT
LOCAL_ALIGNED_16(int32_t, fixed_cpl_coords, [AC3_MAX_BLOCKS], [AC3_MAX_CHANNELS][16]);
LOCAL_ALIGNED_32(int32_t, fixed_cpl_coords, [AC3_MAX_BLOCKS], [AC3_MAX_CHANNELS][16]);
#else
int32_t (*fixed_cpl_coords)[AC3_MAX_CHANNELS][16] = cpl_coords;
#endif

24
libavcodec/x86/ac3dsp.asm
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@ -128,6 +128,30 @@ cglobal float_to_fixed24, 3, 3, 9, dst, src, len
jl .loop
RET
INIT_YMM avx
cglobal float_to_fixed24, 3, 3, 5, dst, src, len
vbroadcastf128 m0, [pf_1_24]
shl lenq, 2
add srcq, lenq
add dstq, lenq
neg lenq
.loop:
mulps m1, m0, [srcq+lenq+mmsize*0]
mulps m2, m0, [srcq+lenq+mmsize*1]
mulps m3, m0, [srcq+lenq+mmsize*2]
mulps m4, m0, [srcq+lenq+mmsize*3]
cvtps2dq m1, m1
cvtps2dq m2, m2
cvtps2dq m3, m3
cvtps2dq m4, m4
mova [dstq+lenq+mmsize*0], m1
mova [dstq+lenq+mmsize*1], m2
mova [dstq+lenq+mmsize*2], m3
mova [dstq+lenq+mmsize*3], m4
add lenq, mmsize*4
jl .loop
RET
;------------------------------------------------------------------------------
; int ff_ac3_compute_mantissa_size(uint16_t mant_cnt[6][16])
;------------------------------------------------------------------------------

4
libavcodec/x86/ac3dsp_init.c
View File

@ -27,6 +27,7 @@
void ff_ac3_exponent_min_sse2 (uint8_t *exp, int num_reuse_blocks, int nb_coefs);
void ff_float_to_fixed24_sse2 (int32_t *dst, const float *src, size_t len);
void ff_float_to_fixed24_avx (int32_t *dst, const float *src, size_t len);
int ff_ac3_compute_mantissa_size_sse2(uint16_t mant_cnt[6][16]);
@ -48,6 +49,9 @@ av_cold void ff_ac3dsp_init_x86(AC3DSPContext *c)
if (!(cpu_flags & AV_CPU_FLAG_ATOM))
c->extract_exponents = ff_ac3_extract_exponents_ssse3;
}
if (EXTERNAL_AVX_FAST(cpu_flags)) {
c->float_to_fixed24 = ff_float_to_fixed24_avx;
}
}
#define DOWNMIX_FUNC_OPT(ch, opt) \