MrBesen/ffmpeg
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

av_filter/x86/idet: MMX/SSE2 implementation of 16bits filter_line()

Browse Source 
tested on http://ps-auxw.de/10bit-h264-sample/10bit-eldorado.mkv
MMX: ~30% faster decoding overall
SSE2:~40% faster

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Pascal Massimino 2014-09-09 14:38:58 +02:00 committed by Michael Niedermayer
parent 881f96c4c2
commit e3fd6a3a4e
4 changed files with 103 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
libavfilter/vf_idet.c
View File

@ -61,7 +61,7 @@ int ff_idet_filter_line_c(const uint8_t *a, const uint8_t *b, const uint8_t *c,
return ret;
}
static int filter_line_c_16bit(const uint16_t *a, const uint16_t *b, const uint16_t *c, int w)
int ff_idet_filter_line_c_16bit(const uint16_t *a, const uint16_t *b, const uint16_t *c, int w)
{
int x;
int ret=0;
@ -169,8 +169,11 @@ static int filter_frame(AVFilterLink *link, AVFrame *picref)
if (!idet->csp)
idet->csp = av_pix_fmt_desc_get(link->format);
if (idet->csp->comp[0].depth_minus1 / 8 == 1)
idet->filter_line = (void*)filter_line_c_16bit;
if (idet->csp->comp[0].depth_minus1 / 8 == 1){
idet->filter_line = (ff_idet_filter_func)ff_idet_filter_line_c_16bit;
if (ARCH_X86)
ff_idet_init_x86(idet, 1);
}
filter(ctx);
@ -245,7 +248,7 @@ static av_cold int init(AVFilterContext *ctx)
idet->filter_line = ff_idet_filter_line_c;
if (ARCH_X86)
ff_idet_init_x86(idet);
ff_idet_init_x86(idet, 0);
return 0;
}

7
libavfilter/vf_idet.h
View File

@ -24,6 +24,8 @@
#define HIST_SIZE 4
typedef int (*ff_idet_filter_func)(const uint8_t *a, const uint8_t *b, const uint8_t *c, int w);
typedef enum {
TFF,
BFF,
@ -45,14 +47,15 @@ typedef struct {
AVFrame *cur;
AVFrame *next;
AVFrame *prev;
int (*filter_line)(const uint8_t *prev, const uint8_t *cur, const uint8_t *next, int w);
ff_idet_filter_func filter_line;
const AVPixFmtDescriptor *csp;
} IDETContext;
void ff_idet_init_x86(IDETContext *idet);
void ff_idet_init_x86(IDETContext *idet, int for_16b);
/* main fall-back for left-over */
int ff_idet_filter_line_c(const uint8_t *a, const uint8_t *b, const uint8_t *c, int w);
int ff_idet_filter_line_c_16bit(const uint16_t *a, const uint16_t *b, const uint16_t *c, int w);
#endif

70
libavfilter/x86/vf_idet.asm
View File

@ -25,8 +25,6 @@
SECTION_TEXT
%if ARCH_X86_32
; Implementation that does 8-bytes at a time using single-word operations.
%macro IDET_FILTER_LINE 1
INIT_MMX %1
@ -78,11 +76,79 @@ cglobal idet_filter_line, 4, 5, 0, a, b, c, width, index
RET
%endmacro
%if ARCH_X86_32
IDET_FILTER_LINE mmxext
IDET_FILTER_LINE mmx
%endif
;******************************************************************************
; 16bit implementation that does 4/8-pixels at a time
%macro PABS_DIFF_WD 3 ; a, b, junk , output=a
psubusw %3, %2, %1
psubusw %1, %2
por %1, %3
mova %2, %1
punpcklwd %1, m_zero
punpckhwd %2, m_zero
paddd %1, %2
%endmacro
%macro IDET_FILTER_LINE_16BIT 1 ; %1=increment (4 or 8 words)
cglobal idet_filter_line_16bit, 4, 5, 8, a, b, c, width, index
xor indexq, indexq
%define m_zero m1
%define m_sum m0
pxor m_sum, m_sum
pxor m_zero, m_zero
.loop_16bit:
movu m2, [bq + indexq * 2] ; B
movu m3, [aq + indexq * 2] ; A
mova m6, m2
psubusw m5, m2, m3 ; ba
movu m4, [cq + indexq * 2] ; C
add indexq, %1
psubusw m3, m2 ; ab
CMP indexd, widthd
psubusw m6, m4 ; bc
psubusw m4, m2 ; cb
PABS_DIFF_WD m3, m6, m7 ; |ab - bc|
PABS_DIFF_WD m5, m4, m7 ; |ba - cb|
paddd m_sum, m3
paddd m_sum, m5
jl .loop_16bit
mova m2, m_sum
%if mmsize == 16
psrldq m2, 4
paddd m_sum, m2
psrldq m2, 4
paddd m_sum, m2
psrldq m2, 4
paddd m_sum, m2
%else
psrlq m2, 32
paddd m_sum, m2
%endif
movd eax, m_sum
RET
%endmacro
INIT_XMM sse2
IDET_FILTER_LINE_16BIT 8
%if ARCH_X86_32
INIT_MMX mmx
IDET_FILTER_LINE_16BIT 4
%endif
;******************************************************************************
; SSE2 8-bit implementation that does 16-bytes at a time:
INIT_XMM sse2
cglobal idet_filter_line, 4, 6, 7, a, b, c, width, index, total
xor indexq, indexq

29
libavfilter/x86/vf_idet_init.c
View File

@ -23,6 +23,8 @@
#include "libavutil/x86/cpu.h"
#include "libavfilter/vf_idet.h"
#if HAVE_YASM
/* declares main callable idet_filter_line_{mmx,mmxext,sse2}() */
#define FUNC_MAIN_DECL(KIND, SPAN) \
int ff_idet_filter_line_##KIND(const uint8_t *a, const uint8_t *b, \
@ -39,32 +41,47 @@ static int idet_filter_line_##KIND(const uint8_t *a, const uint8_t *b, \
return sum; \
}
#if HAVE_YASM
#define FUNC_MAIN_DECL_16bit(KIND, SPAN) \
int ff_idet_filter_line_16bit_##KIND(const uint16_t *a, const uint16_t *b, \
const uint16_t *c, int w); \
static int idet_filter_line_16bit_##KIND(const uint16_t *a, const uint16_t *b, \
const uint16_t *c, int w) { \
int sum = 0; \
const int left_over = w & (SPAN - 1); \
w -= left_over; \
if (w > 0) \
sum += ff_idet_filter_line_16bit_##KIND(a, b, c, w); \
if (left_over > 0) \
sum += ff_idet_filter_line_c_16bit(a + w, b + w, c + w, left_over); \
return sum; \
}
FUNC_MAIN_DECL(sse2, 16)
FUNC_MAIN_DECL_16bit(sse2, 8)
#if ARCH_X86_32
FUNC_MAIN_DECL(mmx, 8)
FUNC_MAIN_DECL(mmxext, 8)
FUNC_MAIN_DECL_16bit(mmx, 4)
#endif
#endif
av_cold void ff_idet_init_x86(IDETContext *idet)
av_cold void ff_idet_init_x86(IDETContext *idet, int for_16b)
{
#if HAVE_YASM
const int cpu_flags = av_get_cpu_flags();
#if ARCH_X86_32
if (EXTERNAL_MMX(cpu_flags)) {
idet->filter_line = idet_filter_line_mmx;
idet->filter_line = for_16b ? (ff_idet_filter_func)idet_filter_line_16bit_mmx : idet_filter_line_mmx;
}
if (EXTERNAL_MMXEXT(cpu_flags)) {
idet->filter_line = idet_filter_line_mmxext;
idet->filter_line = for_16b ? (ff_idet_filter_func)idet_filter_line_16bit_mmx : idet_filter_line_mmxext;
}
#endif // ARCH_x86_32
if (EXTERNAL_SSE2(cpu_flags)) {
idet->filter_line = idet_filter_line_sse2;
idet->filter_line = for_16b ? (ff_idet_filter_func)idet_filter_line_16bit_sse2 : idet_filter_line_sse2;
}
#endif // HAVE_YASM
}