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dcadsp: split lfe_dir cases

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The x86 runs short on registers because numerous elements are not static.
In addition, splitting them allows more optimized code, at least for x86.

Arm asm changes by Janne Grunau.

Signed-off-by: Janne Grunau <janne-libav@jannau.net>
pull/43/merge
Christophe Gisquet 11 years ago committed by Janne Grunau
parent 5b59a9fc61
commit 5fdbfcb5b7
6 changed files with 64 additions and 43 deletions
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  1. 23
      libavcodec/arm/dcadsp_init_arm.c
  2. 18
      libavcodec/arm/dcadsp_neon.S
  3. 32
      libavcodec/arm/dcadsp_vfp.S
  4. 10
      libavcodec/dcadec.c
  5. 18
      libavcodec/dcadsp.c
  6. 4
      libavcodec/dcadsp.h

23
libavcodec/arm/dcadsp_init_arm.c
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@ -24,16 +24,22 @@
#include "libavutil/attributes.h"
#include "libavcodec/dcadsp.h"
void ff_dca_lfe_fir_vfp(float *out, const float *in, const float *coefs,
int decifactor, float scale);
void ff_dca_lfe_fir0_neon(float *out, const float *in, const float *coefs,
float scale);
void ff_dca_lfe_fir1_neon(float *out, const float *in, const float *coefs,
float scale);
void ff_dca_lfe_fir32_vfp(float *out, const float *in, const float *coefs,
float scale);
void ff_dca_lfe_fir64_vfp(float *out, const float *in, const float *coefs,
float scale);
void ff_dca_qmf_32_subbands_vfp(float samples_in[32][8], int sb_act,
SynthFilterContext *synth, FFTContext *imdct,
float synth_buf_ptr[512],
int *synth_buf_offset, float synth_buf2[32],
const float window[512], float *samples_out,
float raXin[32], float scale);
void ff_dca_lfe_fir_neon(float *out, const float *in, const float *coefs,
int decifactor, float scale);
void ff_synth_filter_float_vfp(FFTContext *imdct,
float *synth_buf_ptr, int *synth_buf_offset,
@ -52,11 +58,14 @@ av_cold void ff_dcadsp_init_arm(DCADSPContext *s)
int cpu_flags = av_get_cpu_flags();
if (have_vfp(cpu_flags) && !have_vfpv3(cpu_flags)) {
s->lfe_fir = ff_dca_lfe_fir_vfp;
s->lfe_fir[0] = ff_dca_lfe_fir32_vfp;
s->lfe_fir[1] = ff_dca_lfe_fir64_vfp;
s->qmf_32_subbands = ff_dca_qmf_32_subbands_vfp;
}
if (have_neon(cpu_flags))
s->lfe_fir = ff_dca_lfe_fir_neon;
if (have_neon(cpu_flags)) {
s->lfe_fir[0] = ff_dca_lfe_fir0_neon;
s->lfe_fir[1] = ff_dca_lfe_fir1_neon;
}
}
av_cold void ff_synth_filter_init_arm(SynthFilterContext *s)

18
libavcodec/arm/dcadsp_neon.S
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@ -20,17 +20,23 @@
#include "libavutil/arm/asm.S"
function ff_dca_lfe_fir_neon, export=1
function ff_dca_lfe_fir0_neon, export=1
push {r4-r6,lr}
NOVFP vmov s0, r3 @ scale
mov r3, #32 @ decifactor
mov r6, #256/32
b dca_lfe_fir
endfunc
function ff_dca_lfe_fir1_neon, export=1
push {r4-r6,lr}
NOVFP vmov s0, r3 @ scale
mov r3, #64 @ decifactor
mov r6, #256/64
dca_lfe_fir:
add r4, r0, r3, lsl #2 @ out2
add r5, r2, #256*4-16 @ cf1
sub r1, r1, #12
cmp r3, #32
ite eq
moveq r6, #256/32
movne r6, #256/64
NOVFP vldr s0, [sp, #16] @ scale
mov lr, #-16
1:
vmov.f32 q2, #0.0 @ v0

32
libavcodec/arm/dcadsp_vfp.S
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@ -24,7 +24,6 @@
POUT .req a1
PIN .req a2
PCOEF .req a3
DECIFACTOR .req a4
OLDFPSCR .req a4
COUNTER .req ip
@ -129,6 +128,15 @@ POST3 .req s27
.endm
.macro dca_lfe_fir decifactor
function ff_dca_lfe_fir\decifactor\()_vfp, export=1
NOVFP vmov s0, r3
fmrx OLDFPSCR, FPSCR
ldr ip, =0x03030000 @ RunFast mode, short vectors of length 4, stride 1
fmxr FPSCR, ip
vldr IN0, [PIN, #-0*4]
vldr IN1, [PIN, #-1*4]
vldr IN2, [PIN, #-2*4]
vldr IN3, [PIN, #-3*4]
.if \decifactor == 32
.set JMAX, 8
vpush {s16-s31}
@ -165,32 +173,16 @@ POST3 .req s27
.endif
fmxr FPSCR, OLDFPSCR
bx lr
endfunc
.endm
/* void ff_dca_lfe_fir_vfp(float *out, const float *in, const float *coefs,
* int decifactor, float scale)
*/
function ff_dca_lfe_fir_vfp, export=1
teq DECIFACTOR, #32
fmrx OLDFPSCR, FPSCR
ldr ip, =0x03030000 @ RunFast mode, short vectors of length 4, stride 1
fmxr FPSCR, ip
NOVFP vldr s0, [sp]
vldr IN0, [PIN, #-0*4]
vldr IN1, [PIN, #-1*4]
vldr IN2, [PIN, #-2*4]
vldr IN3, [PIN, #-3*4]
beq 32f
64: dca_lfe_fir 64
dca_lfe_fir 64
.ltorg
32: dca_lfe_fir 32
endfunc
dca_lfe_fir 32
.unreq POUT
.unreq PIN
.unreq PCOEF
.unreq DECIFACTOR
.unreq OLDFPSCR
.unreq COUNTER

10
libavcodec/dcadec.c
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@ -957,23 +957,23 @@ static void lfe_interpolation_fir(DCAContext *s, int decimation_select,
* samples_out: An array holding interpolated samples
*/
int decifactor;
int idx;
const float *prCoeff;
int deciindex;
/* Select decimation filter */
if (decimation_select == 1) {
decifactor = 64;
idx = 1;
prCoeff = lfe_fir_128;
} else {
decifactor = 32;
idx = 0;
prCoeff = lfe_fir_64;
}
/* Interpolation */
for (deciindex = 0; deciindex < num_deci_sample; deciindex++) {
s->dcadsp.lfe_fir(samples_out, samples_in, prCoeff, decifactor, scale);
s->dcadsp.lfe_fir[idx](samples_out, samples_in, prCoeff, scale);
samples_in++;
samples_out += 2 * decifactor;
samples_out += 2 * 32 * (1 + idx);
}
}

18
libavcodec/dcadsp.c
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@ -32,7 +32,8 @@ static void int8x8_fmul_int32_c(float *dst, const int8_t *src, int scale)
dst[i] = src[i] * fscale;
}
static void dca_lfe_fir_c(float *out, const float *in, const float *coefs,
static inline void
dca_lfe_fir(float *out, const float *in, const float *coefs,
int decifactor, float scale)
{
float *out2 = out + decifactor;
@ -82,9 +83,22 @@ static void dca_qmf_32_subbands(float samples_in[32][8], int sb_act,
}
}
static void dca_lfe_fir0_c(float *out, const float *in, const float *coefs,
float scale)
{
dca_lfe_fir(out, in, coefs, 32, scale);
}
static void dca_lfe_fir1_c(float *out, const float *in, const float *coefs,
float scale)
{
dca_lfe_fir(out, in, coefs, 64, scale);
}
av_cold void ff_dcadsp_init(DCADSPContext *s)
{
s->lfe_fir = dca_lfe_fir_c;
s->lfe_fir[0] = dca_lfe_fir0_c;
s->lfe_fir[1] = dca_lfe_fir1_c;
s->qmf_32_subbands = dca_qmf_32_subbands;
s->int8x8_fmul_int32 = int8x8_fmul_int32_c;
if (ARCH_ARM) ff_dcadsp_init_arm(s);

4
libavcodec/dcadsp.h
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@ -23,8 +23,8 @@
#include "synth_filter.h"
typedef struct DCADSPContext {
void (*lfe_fir)(float *out, const float *in, const float *coefs,
int decifactor, float scale);
void (*lfe_fir[2])(float *out, const float *in, const float *coefs,
float scale);
void (*qmf_32_subbands)(float samples_in[32][8], int sb_act,
SynthFilterContext *synth, FFTContext *imdct,
float synth_buf_ptr[512],

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