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armv7: Enable NE10's fixed-point FFT for the MDCT

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Extends usage of NEON optimized fixed-point FFT optimizations
in libNE10 to clt_mdct_forward and clt_mdct_backward.

Signed-off-by: Timothy B. Terriberry <tterribe@xiph.org>
This commit is contained in:
Viswanath Puttagunta 2015-05-15 12:42:26 -05:00 • committed by Jean-Marc Valin
parent ba8713ccb5
commit bae854501f
4 changed files with 27 additions and 32 deletions
Download patch file Download diff file Expand all files Collapse all files

6
celt/arm/arm_celt_map.c
View file

@ -91,7 +91,6 @@ void (*const OPUS_IFFT[OPUS_ARCHMASK+1])(const kiss_fft_state *cfg,
opus_ifft_neon /* Neon with NE10 */
};
# if !defined(FIXED_POINT)
void (*const CLT_MDCT_FORWARD_IMPL[OPUS_ARCHMASK+1])(const mdct_lookup *l,
kiss_fft_scalar *in,
kiss_fft_scalar * OPUS_RESTRICT out,
@ -101,7 +100,7 @@ void (*const CLT_MDCT_FORWARD_IMPL[OPUS_ARCHMASK+1])(const mdct_lookup *l,
clt_mdct_forward_c, /* ARMv4 */
clt_mdct_forward_c, /* EDSP */
clt_mdct_forward_c, /* Media */
clt_mdct_forward_float_neon /* Neon with NE10 */
clt_mdct_forward_neon /* Neon with NE10 */
};
void (*const CLT_MDCT_BACKWARD_IMPL[OPUS_ARCHMASK+1])(const mdct_lookup *l,
@ -113,10 +112,9 @@ void (*const CLT_MDCT_BACKWARD_IMPL[OPUS_ARCHMASK+1])(const mdct_lookup *l,
clt_mdct_backward_c, /* ARMv4 */
clt_mdct_backward_c, /* EDSP */
clt_mdct_backward_c, /* Media */
clt_mdct_backward_float_neon /* Neon with NE10 */
clt_mdct_backward_neon /* Neon with NE10 */
};
# endif /* !FIXED_POINT */
# endif /* HAVE_ARM_NE10 */
# endif /* OPUS_ARM_MAY_HAVE_NEON_INTR */

23
celt/arm/celt_ne10_mdct.c
View file

@ -41,13 +41,11 @@
#include "mdct.h"
#include "stack_alloc.h"
#if !defined(FIXED_POINT)
void clt_mdct_forward_float_neon(const mdct_lookup *l,
kiss_fft_scalar *in,
kiss_fft_scalar * OPUS_RESTRICT out,
const opus_val16 *window,
int overlap, int shift, int stride, int arch)
void clt_mdct_forward_neon(const mdct_lookup *l,
kiss_fft_scalar *in,
kiss_fft_scalar * OPUS_RESTRICT out,
const opus_val16 *window,
int overlap, int shift, int stride, int arch)
{
int i;
int N, N2, N4;
@ -157,11 +155,11 @@ void clt_mdct_forward_float_neon(const mdct_lookup *l,
RESTORE_STACK;
}
void clt_mdct_backward_float_neon(const mdct_lookup *l,
kiss_fft_scalar *in,
kiss_fft_scalar * OPUS_RESTRICT out,
const opus_val16 * OPUS_RESTRICT window,
int overlap, int shift, int stride, int arch)
void clt_mdct_backward_neon(const mdct_lookup *l,
kiss_fft_scalar *in,
kiss_fft_scalar * OPUS_RESTRICT out,
const opus_val16 * OPUS_RESTRICT window,
int overlap, int shift, int stride, int arch)
{
int i;
int N, N2, N4;
@ -258,4 +256,3 @@ void clt_mdct_backward_float_neon(const mdct_lookup *l,
}
RESTORE_STACK;
}
#endif /* !defined(FIXED_POINT) */

24
celt/arm/mdct_arm.h
View file

@ -36,25 +36,25 @@
#include "config.h"
#include "mdct.h"
#if !defined(FIXED_POINT) && defined(HAVE_ARM_NE10)
#if defined(HAVE_ARM_NE10)
/** Compute a forward MDCT and scale by 4/N, trashes the input array */
void clt_mdct_forward_float_neon(const mdct_lookup *l, kiss_fft_scalar *in,
kiss_fft_scalar * OPUS_RESTRICT out,
const opus_val16 *window, int overlap,
int shift, int stride, int arch);
void clt_mdct_forward_neon(const mdct_lookup *l, kiss_fft_scalar *in,
kiss_fft_scalar * OPUS_RESTRICT out,
const opus_val16 *window, int overlap,
int shift, int stride, int arch);
void clt_mdct_backward_float_neon(const mdct_lookup *l, kiss_fft_scalar *in,
kiss_fft_scalar * OPUS_RESTRICT out,
const opus_val16 *window, int overlap,
int shift, int stride, int arch);
void clt_mdct_backward_neon(const mdct_lookup *l, kiss_fft_scalar *in,
kiss_fft_scalar * OPUS_RESTRICT out,
const opus_val16 *window, int overlap,
int shift, int stride, int arch);
#if !defined(OPUS_HAVE_RTCD)
#define OVERRIDE_OPUS_MDCT (1)
#define clt_mdct_forward(_l, _in, _out, _window, _int, _shift, _stride, _arch) \
clt_mdct_forward_float_neon(_l, _in, _out, _window, _int, _shift, _stride, _arch)
clt_mdct_forward_neon(_l, _in, _out, _window, _int, _shift, _stride, _arch)
#define clt_mdct_backward(_l, _in, _out, _window, _int, _shift, _stride, _arch) \
clt_mdct_backward_float_neon(_l, _in, _out, _window, _int, _shift, _stride, _arch)
clt_mdct_backward_neon(_l, _in, _out, _window, _int, _shift, _stride, _arch)
#endif /* OPUS_HAVE_RTCD */
#endif /* !defined(FIXED_POINT) && defined(HAVE_ARM_NE10) */
#endif /* HAVE_ARM_NE10 */
#endif

6
celt/mdct.h
View file

@ -53,7 +53,7 @@ typedef struct {
const kiss_twiddle_scalar * OPUS_RESTRICT trig;
} mdct_lookup;
#if !defined(FIXED_POINT) && defined(HAVE_ARM_NE10)
#if defined(HAVE_ARM_NE10)
#include "arm/mdct_arm.h"
#endif
@ -76,7 +76,7 @@ void clt_mdct_backward_c(const mdct_lookup *l, kiss_fft_scalar *in,
#if !defined(OVERRIDE_OPUS_MDCT)
/* Is run-time CPU detection enabled on this platform? */
#if defined(OPUS_HAVE_RTCD) && defined(HAVE_ARM_NE10) && !defined(FIXED_POINT)
#if defined(OPUS_HAVE_RTCD) && defined(HAVE_ARM_NE10)
extern void (*const CLT_MDCT_FORWARD_IMPL[OPUS_ARCHMASK+1])(
const mdct_lookup *l, kiss_fft_scalar *in,
@ -98,7 +98,7 @@ extern void (*const CLT_MDCT_BACKWARD_IMPL[OPUS_ARCHMASK+1])(
_window, _overlap, _shift, \
_stride, _arch)
#else /* if defined(OPUS_HAVE_RTCD) && defined(HAVE_ARM_NE10) && !defined(FIXED_POINT) */
#else /* if defined(OPUS_HAVE_RTCD) && defined(HAVE_ARM_NE10) */
#define clt_mdct_forward(_l, _in, _out, _window, _overlap, _shift, _stride, _arch) \
clt_mdct_forward_c(_l, _in, _out, _window, _overlap, _shift, _stride, _arch)