Merge commit '9d5c62ba5b586c80af508b5914934b1c439f6652'

* commit '9d5c62ba5b586c80af508b5914934b1c439f6652':
  lavu/opt: do not filter out the initial sign character except for flags
  eval: treat dB as decibels instead of decibytes
  float_dsp: add vector_dmul_scalar() to multiply a vector of doubles

Conflicts:
	libavutil/eval.c
	tests/ref/fate/eval

Merged-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-12-06 14:33:38 +01:00
commit 15784c2bab
8 changed files with 127 additions and 6 deletions

View File

@ -94,7 +94,11 @@ double av_strtod(const char *numstr, char **tail)
d = strtod(numstr, &next);
/* if parsing succeeded, check for and interpret postfixes */
if (next!=numstr) {
if (*next >= 'E' && *next <= 'z') {
if (next[0] == 'd' && next[1] == 'B') {
/* treat dB as decibels instead of decibytes */
d = pow(10, d / 20);
next += 2;
} else if (*next >= 'E' && *next <= 'z') {
int e= si_prefixes[*next - 'E'];
if (e) {
if (next[1] == 'i') {
@ -448,16 +452,31 @@ static int parse_pow(AVExpr **e, Parser *p, int *sign)
return parse_primary(e, p);
}
static int parse_dB(AVExpr **e, Parser *p, int *sign)
{
/* do not filter out the negative sign when parsing a dB value.
for example, -3dB is not the same as -(3dB) */
if (*p->s == '-') {
char *next;
strtod(p->s, &next);
if (next != p->s && next[0] == 'd' && next[1] == 'B') {
*sign = 0;
return parse_primary(e, p);
}
}
return parse_pow(e, p, sign);
}
static int parse_factor(AVExpr **e, Parser *p)
{
int sign, sign2, ret;
AVExpr *e0, *e1, *e2;
if ((ret = parse_pow(&e0, p, &sign)) < 0)
if ((ret = parse_dB(&e0, p, &sign)) < 0)
return ret;
while(p->s[0]=='^'){
e1 = e0;
p->s++;
if ((ret = parse_pow(&e2, p, &sign2)) < 0) {
if ((ret = parse_dB(&e2, p, &sign2)) < 0) {
av_expr_free(e1);
return ret;
}
@ -744,6 +763,8 @@ int main(int argc, char **argv)
"not(1)",
"not(NAN)",
"not(0)",
"6.0206dB",
"-3.0103dB",
"pow(0,1.23)",
"pow(PI,1.23)",
"PI^1.23",

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@ -47,11 +47,20 @@ static void vector_fmul_scalar_c(float *dst, const float *src, float mul,
dst[i] = src[i] * mul;
}
static void vector_dmul_scalar_c(double *dst, const double *src, double mul,
int len)
{
int i;
for (i = 0; i < len; i++)
dst[i] = src[i] * mul;
}
void avpriv_float_dsp_init(AVFloatDSPContext *fdsp, int bit_exact)
{
fdsp->vector_fmul = vector_fmul_c;
fdsp->vector_fmac_scalar = vector_fmac_scalar_c;
fdsp->vector_fmul_scalar = vector_fmul_scalar_c;
fdsp->vector_dmul_scalar = vector_dmul_scalar_c;
#if ARCH_ARM
ff_float_dsp_init_arm(fdsp);

View File

@ -66,6 +66,21 @@ typedef struct AVFloatDSPContext {
*/
void (*vector_fmul_scalar)(float *dst, const float *src, float mul,
int len);
/**
* Multiply a vector of double by a scalar double. Source and
* destination vectors must overlap exactly or not at all.
*
* @param dst result vector
* constraints: 32-byte aligned
* @param src input vector
* constraints: 32-byte aligned
* @param mul scalar value
* @param len length of vector
* constraints: multiple of 8
*/
void (*vector_dmul_scalar)(double *dst, const double *src, double mul,
int len);
} AVFloatDSPContext;
/**

View File

@ -184,10 +184,15 @@ static int set_string_number(void *obj, const AVOption *o, const char *val, void
double d, num = 1;
int64_t intnum = 1;
if (*val == '+' || *val == '-')
cmd = *(val++);
i = 0;
if (*val == '+' || *val == '-') {
if (o->type == AV_OPT_TYPE_FLAGS)
cmd = *(val++);
else if (!notfirst)
buf[i++] = *val;
}
for (i = 0; i < sizeof(buf) - 1 && val[i] && val[i] != '+' && val[i] != '-'; i++)
for (; i < sizeof(buf) - 1 && val[i] && val[i] != '+' && val[i] != '-'; i++)
buf[i] = val[i];
buf[i] = 0;

View File

@ -120,3 +120,48 @@ cglobal vector_fmul_scalar, 4,4,3, dst, src, mul, len
INIT_XMM sse
VECTOR_FMUL_SCALAR
;------------------------------------------------------------------------------
; void ff_vector_dmul_scalar(double *dst, const double *src, double mul,
; int len)
;------------------------------------------------------------------------------
%macro VECTOR_DMUL_SCALAR 0
%if UNIX64
cglobal vector_dmul_scalar, 3,3,3, dst, src, len
%else
cglobal vector_dmul_scalar, 4,4,3, dst, src, mul, len
%endif
%if ARCH_X86_32
VBROADCASTSD m0, mulm
%else
%if WIN64
movlhps xmm2, xmm2
%if cpuflag(avx)
vinsertf128 ymm2, ymm2, xmm2, 1
%endif
SWAP 0, 2
%else
movlhps xmm0, xmm0
%if cpuflag(avx)
vinsertf128 ymm0, ymm0, xmm0, 1
%endif
%endif
%endif
lea lenq, [lend*8-2*mmsize]
.loop:
mulpd m1, m0, [srcq+lenq ]
mulpd m2, m0, [srcq+lenq+mmsize]
mova [dstq+lenq ], m1
mova [dstq+lenq+mmsize], m2
sub lenq, 2*mmsize
jge .loop
REP_RET
%endmacro
INIT_XMM sse2
VECTOR_DMUL_SCALAR
%if HAVE_AVX_EXTERNAL
INIT_YMM avx
VECTOR_DMUL_SCALAR
%endif

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@ -35,6 +35,11 @@ extern void ff_vector_fmac_scalar_avx(float *dst, const float *src, float mul,
extern void ff_vector_fmul_scalar_sse(float *dst, const float *src, float mul,
int len);
extern void ff_vector_dmul_scalar_sse2(double *dst, const double *src,
double mul, int len);
extern void ff_vector_dmul_scalar_avx(double *dst, const double *src,
double mul, int len);
void ff_float_dsp_init_x86(AVFloatDSPContext *fdsp)
{
int mm_flags = av_get_cpu_flags();
@ -44,8 +49,12 @@ void ff_float_dsp_init_x86(AVFloatDSPContext *fdsp)
fdsp->vector_fmac_scalar = ff_vector_fmac_scalar_sse;
fdsp->vector_fmul_scalar = ff_vector_fmul_scalar_sse;
}
if (EXTERNAL_SSE2(mm_flags)) {
fdsp->vector_dmul_scalar = ff_vector_dmul_scalar_sse2;
}
if (EXTERNAL_AVX(mm_flags)) {
fdsp->vector_fmul = ff_vector_fmul_avx;
fdsp->vector_fmac_scalar = ff_vector_fmac_scalar_avx;
fdsp->vector_dmul_scalar = ff_vector_dmul_scalar_avx;
}
}

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@ -631,6 +631,17 @@
%endif
%endmacro
%macro VBROADCASTSD 2 ; dst xmm/ymm, src m64
%if cpuflag(avx) && mmsize == 32
vbroadcastsd %1, %2
%elif cpuflag(sse3)
movddup %1, %2
%else ; sse2
movsd %1, %2
movlhps %1, %1
%endif
%endmacro
%macro SHUFFLE_MASK_W 8
%rep 8
%if %1>=0x80

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@ -184,6 +184,12 @@ Evaluating 'not(NAN)'
Evaluating 'not(0)'
'not(0)' -> 1.000000
Evaluating '6.0206dB'
'6.0206dB' -> 2.000000
Evaluating '-3.0103dB'
'-3.0103dB' -> 0.707107
Evaluating 'pow(0,1.23)'
'pow(0,1.23)' -> 0.000000