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lavu/tx: generalize single-factor transforms

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Not that useful, but it gives us fast small odd-length transforms.
This commit is contained in:
Lynne 2022-09-24 06:49:16 +02:00
parent 79f11e2409
commit 45bd4bf79f
No known key found for this signature in database
GPG Key ID: A2FEA5F03F034464
3 changed files with 26 additions and 26 deletions
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4
libavutil/tx.c
View File

@ -121,9 +121,9 @@ int ff_tx_gen_ptwo_revtab(AVTXContext *s, int invert_lookup)
return 0;
}
int ff_tx_gen_ptwo_inplace_revtab_idx(AVTXContext *s)
int ff_tx_gen_inplace_map(AVTXContext *s, int len)
{
int *src_map, out_map_idx = 0, len = s->len;
int *src_map, out_map_idx = 0;
if (!s->sub || !s->sub->map)
return AVERROR(EINVAL);

2
libavutil/tx_priv.h
View File

@ -259,7 +259,7 @@ int ff_tx_gen_ptwo_revtab(AVTXContext *s, int invert_lookup);
* specific order, allows the revtab to be done in-place. The sub-transform
* and its map should already be initialized.
*/
int ff_tx_gen_ptwo_inplace_revtab_idx(AVTXContext *s);
int ff_tx_gen_inplace_map(AVTXContext *s, int len);
/*
* This generates a parity-based revtab of length len and direction inv.

46
libavutil/tx_template.c
View File

@ -650,12 +650,12 @@ DECL_SR_CODELET(32768,16384,8192)
DECL_SR_CODELET(65536,32768,16384)
DECL_SR_CODELET(131072,65536,32768)
static av_cold int TX_NAME(ff_tx_fft_sr_init)(AVTXContext *s,
const FFTXCodelet *cd,
uint64_t flags,
FFTXCodeletOptions *opts,
int len, int inv,
const void *scale)
static av_cold int TX_NAME(ff_tx_fft_init)(AVTXContext *s,
const FFTXCodelet *cd,
uint64_t flags,
FFTXCodeletOptions *opts,
int len, int inv,
const void *scale)
{
int ret;
int is_inplace = !!(flags & AV_TX_INPLACE);
@ -668,14 +668,14 @@ static av_cold int TX_NAME(ff_tx_fft_sr_init)(AVTXContext *s,
if ((ret = ff_tx_init_subtx(s, TX_TYPE(FFT), flags, &sub_opts, len, inv, scale)))
return ret;
if (is_inplace && (ret = ff_tx_gen_ptwo_inplace_revtab_idx(s)))
if (is_inplace && (ret = ff_tx_gen_inplace_map(s, len)))
return ret;
return 0;
}
static void TX_NAME(ff_tx_fft_sr)(AVTXContext *s, void *_dst,
void *_src, ptrdiff_t stride)
static void TX_NAME(ff_tx_fft)(AVTXContext *s, void *_dst,
void *_src, ptrdiff_t stride)
{
TXComplex *src = _src;
TXComplex *dst = _dst;
@ -690,8 +690,8 @@ static void TX_NAME(ff_tx_fft_sr)(AVTXContext *s, void *_dst,
s->fn[0](&s->sub[0], dst, dst, stride);
}
static void TX_NAME(ff_tx_fft_sr_inplace)(AVTXContext *s, void *_dst,
void *_src, ptrdiff_t stride)
static void TX_NAME(ff_tx_fft_inplace)(AVTXContext *s, void *_dst,
void *_src, ptrdiff_t stride)
{
TXComplex *dst = _dst;
TXComplex tmp;
@ -713,28 +713,28 @@ static void TX_NAME(ff_tx_fft_sr_inplace)(AVTXContext *s, void *_dst,
s->fn[0](&s->sub[0], dst, dst, stride);
}
static const FFTXCodelet TX_NAME(ff_tx_fft_sr_def) = {
.name = TX_NAME_STR("fft_sr"),
.function = TX_NAME(ff_tx_fft_sr),
static const FFTXCodelet TX_NAME(ff_tx_fft_def) = {
.name = TX_NAME_STR("fft"),
.function = TX_NAME(ff_tx_fft),
.type = TX_TYPE(FFT),
.flags = AV_TX_UNALIGNED | FF_TX_OUT_OF_PLACE,
.factors[0] = 2,
.factors[0] = TX_FACTOR_ANY,
.min_len = 2,
.max_len = TX_LEN_UNLIMITED,
.init = TX_NAME(ff_tx_fft_sr_init),
.init = TX_NAME(ff_tx_fft_init),
.cpu_flags = FF_TX_CPU_FLAGS_ALL,
.prio = FF_TX_PRIO_BASE,
};
static const FFTXCodelet TX_NAME(ff_tx_fft_sr_inplace_def) = {
.name = TX_NAME_STR("fft_sr_inplace"),
.function = TX_NAME(ff_tx_fft_sr_inplace),
static const FFTXCodelet TX_NAME(ff_tx_fft_inplace_def) = {
.name = TX_NAME_STR("fft_inplace"),
.function = TX_NAME(ff_tx_fft_inplace),
.type = TX_TYPE(FFT),
.flags = AV_TX_UNALIGNED | AV_TX_INPLACE,
.factors[0] = 2,
.factors[0] = TX_FACTOR_ANY,
.min_len = 2,
.max_len = TX_LEN_UNLIMITED,
.init = TX_NAME(ff_tx_fft_sr_init),
.init = TX_NAME(ff_tx_fft_init),
.cpu_flags = FF_TX_CPU_FLAGS_ALL,
.prio = FF_TX_PRIO_BASE,
};
@ -1484,8 +1484,8 @@ const FFTXCodelet * const TX_NAME(ff_tx_codelet_list)[] = {
&TX_NAME(ff_tx_fft131072_ns_def),
/* Standalone transforms */
&TX_NAME(ff_tx_fft_sr_def),
&TX_NAME(ff_tx_fft_sr_inplace_def),
&TX_NAME(ff_tx_fft_def),
&TX_NAME(ff_tx_fft_inplace_def),
&TX_NAME(ff_tx_fft_pfa_3xM_def),
&TX_NAME(ff_tx_fft_pfa_5xM_def),
&TX_NAME(ff_tx_fft_pfa_7xM_def),