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cavs: add a sse2 idct implementation. 

This makes using the function pointer ff_add_pixels_clamped() unnecessary,
since we always know what the best implementation is at compile-time.
This commit is contained in:
Ronald S. Bultje 2017-04-04 12:17:08 -04:00
parent c9d98c5649
commit 2f0591cfa3
2 changed files with 61 additions and 2 deletions
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15
libavcodec/x86/cavsdsp.c
View File

@ -29,6 +29,7 @@
#include "libavutil/x86/cpu.h"
#include "libavcodec/cavsdsp.h"
#include "libavcodec/idctdsp.h"
#include "libavcodec/x86/idctdsp.h"
#include "constants.h"
#include "fpel.h"
#include "idctdsp.h"
@ -43,7 +44,16 @@ static void cavs_idct8_add_mmx(uint8_t *dst, int16_t *block, ptrdiff_t stride)
{
LOCAL_ALIGNED(16, int16_t, b2, [64]);
ff_cavs_idct8_mmx(b2, block);
ff_add_pixels_clamped(b2, dst, stride);
ff_add_pixels_clamped_mmx(b2, dst, stride);
}
void ff_cavs_idct8_sse2(int16_t *out, const int16_t *in);
static void cavs_idct8_add_sse2(uint8_t *dst, int16_t *block, ptrdiff_t stride)
{
LOCAL_ALIGNED(16, int16_t, b2, [64]);
ff_cavs_idct8_sse2(b2, block);
ff_add_pixels_clamped_sse2(b2, dst, stride);
}
#endif /* HAVE_MMX_EXTERNAL */
@ -446,6 +456,9 @@ av_cold void ff_cavsdsp_init_x86(CAVSDSPContext *c, AVCodecContext *avctx)
if (EXTERNAL_SSE2(cpu_flags)) {
c->put_cavs_qpel_pixels_tab[0][0] = put_cavs_qpel16_mc00_sse2;
c->avg_cavs_qpel_pixels_tab[0][0] = avg_cavs_qpel16_mc00_sse2;
c->cavs_idct8_add = cavs_idct8_add_sse2;
c->idct_perm = FF_IDCT_PERM_TRANSPOSE;
}
#endif
}

48
libavcodec/x86/cavsidct.asm
View File

@ -29,11 +29,16 @@ cextern pw_64
SECTION .text
%macro CAVS_IDCT8_1D 2 ; source, round
%macro CAVS_IDCT8_1D 2-3 1 ; source, round, init_load
%if %3 == 1
mova m4, [%1+7*16] ; m4 = src7
mova m5, [%1+1*16] ; m5 = src1
mova m2, [%1+5*16] ; m2 = src5
mova m7, [%1+3*16] ; m7 = src3
%else
SWAP 1, 7
SWAP 4, 6
%endif
mova m0, m4
mova m3, m5
mova m6, m2
@ -163,3 +168,44 @@ cglobal cavs_idct8, 2, 4, 8, 8 * 16, out, in, cnt, tmp
jg .loop_2
RET
INIT_XMM sse2
cglobal cavs_idct8, 2, 2, 8 + ARCH_X86_64, 0 - 8 * 16, out, in
CAVS_IDCT8_1D inq, [pw_4]
psraw m7, 3
psraw m6, 3
psraw m5, 3
psraw m4, 3
psraw m3, 3
psraw m2, 3
psraw m1, 3
psraw m0, 3
%if ARCH_X86_64
TRANSPOSE8x8W 7, 5, 3, 1, 0, 2, 4, 6, 8
mova [rsp+4*16], m0
%else
mova [rsp+0*16], m4
TRANSPOSE8x8W 7, 5, 3, 1, 0, 2, 4, 6, [rsp+0*16], [rsp+4*16], 1
%endif
mova [rsp+0*16], m7
mova [rsp+2*16], m3
mova [rsp+6*16], m4
CAVS_IDCT8_1D rsp, [pw_64], 0
psraw m7, 7
psraw m6, 7
psraw m5, 7
psraw m4, 7
psraw m3, 7
psraw m2, 7
psraw m1, 7
psraw m0, 7
mova [outq+0*16], m7
mova [outq+1*16], m5
mova [outq+2*16], m3
mova [outq+3*16], m1
mova [outq+4*16], m0
mova [outq+5*16], m2
mova [outq+6*16], m4
mova [outq+7*16], m6
RET