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FFmpeg/libavcodec/i386/vc1dsp_mmx.c

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/*
* VC-1 and WMV3 - DSP functions MMX-optimized
* Copyright (c) 2007 Christophe GISQUET <christophe.gisquet@free.fr>
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#include "dsputil.h"
#include "dsputil_mmx.h"
#include "x86_cpu.h"
/** Add rounder from mm7 to mm3 and pack result at destination */
#define NORMALIZE_MMX(SHIFT) \
"paddw %%mm7, %%mm3 \n\t" /* +bias-r */ \
"paddw %%mm7, %%mm4 \n\t" /* +bias-r */ \
"psraw "SHIFT", %%mm3 \n\t" \
"psraw "SHIFT", %%mm4 \n\t"
#define TRANSFER_DO_PACK \
"packuswb %%mm4, %%mm3 \n\t" \
"movq %%mm3, (%2) \n\t"
#define TRANSFER_DONT_PACK \
"movq %%mm3, 0(%2) \n\t" \
"movq %%mm4, 8(%2) \n\t"
/** @see MSPEL_FILTER13_CORE for use as UNPACK macro */
#define DO_UNPACK(reg) "punpcklbw %%mm0, " reg "\n\t"
#define DONT_UNPACK(reg)
/** Compute the rounder 32-r or 8-r and unpacks it to mm7 */
#define LOAD_ROUNDER_MMX(ROUND) \
"movd "ROUND", %%mm7 \n\t" \
"punpcklwd %%mm7, %%mm7 \n\t" \
"punpckldq %%mm7, %%mm7 \n\t"
#define SHIFT2_LINE(OFF, R0,R1,R2,R3) \
"paddw %%mm"#R2", %%mm"#R1" \n\t" \
"movd (%1,%4), %%mm"#R0" \n\t" \
"pmullw %%mm6, %%mm"#R1" \n\t" \
"punpcklbw %%mm0, %%mm"#R0" \n\t" \
"movd (%1,%3), %%mm"#R3" \n\t" \
"psubw %%mm"#R0", %%mm"#R1" \n\t" \
"punpcklbw %%mm0, %%mm"#R3" \n\t" \
"paddw %%mm7, %%mm"#R1" \n\t" \
"psubw %%mm"#R3", %%mm"#R1" \n\t" \
"psraw %5, %%mm"#R1" \n\t" \
"movq %%mm"#R1", "#OFF"(%2) \n\t" \
"add %3, %1 \n\t"
DECLARE_ALIGNED_16(static const uint64_t, fact_9) = 0x0009000900090009ULL;
/** Sacrifying mm6 allows to pipeline loads from src */
static void vc1_put_ver_16b_shift2_mmx(int16_t *dst,
const uint8_t *src, long int stride,
int rnd, int64_t shift)
{
int w = 3;
asm volatile(
LOAD_ROUNDER_MMX("%6")
"movq %7, %%mm6 \n\t"
"1: \n\t"
"movd (%1), %%mm2 \n\t"
"add %3, %1 \n\t"
"movd (%1), %%mm3 \n\t"
"punpcklbw %%mm0, %%mm2 \n\t"
"punpcklbw %%mm0, %%mm3 \n\t"
SHIFT2_LINE( 0, 1, 2, 3, 4)
SHIFT2_LINE( 24, 2, 3, 4, 1)
SHIFT2_LINE( 48, 3, 4, 1, 2)
SHIFT2_LINE( 72, 4, 1, 2, 3)
SHIFT2_LINE( 96, 1, 2, 3, 4)
SHIFT2_LINE(120, 2, 3, 4, 1)
SHIFT2_LINE(144, 3, 4, 1, 2)
SHIFT2_LINE(168, 4, 1, 2, 3)
"sub %8, %1 \n\t"
"add $8, %2 \n\t"
"dec %0 \n\t"
"jnz 1b \n\t"
: "+g"(w), "+r"(src), "+r"(dst)
: "r"(stride), "r"(-2*stride), "m"(shift),
"m"(rnd), "m"(fact_9), "g"(9*stride-4)
: "memory"
);
}
/**
* Data is already unpacked, so some operations can directly be made from
* memory.
*/
static void vc1_put_hor_16b_shift2_mmx(uint8_t *dst, long int stride,
const int16_t *src, int rnd)
{
int h = 8;
src -= 1;
rnd -= (-1+9+9-1)*1024; /* Add -1024 bias */
asm volatile(
LOAD_ROUNDER_MMX("%4")
"movq %6, %%mm6 \n\t"
"movq %5, %%mm5 \n\t"
"1: \n\t"
"movq 2*0+0(%1), %%mm1 \n\t"
"movq 2*0+8(%1), %%mm2 \n\t"
"movq 2*1+0(%1), %%mm3 \n\t"
"movq 2*1+8(%1), %%mm4 \n\t"
"paddw 2*3+0(%1), %%mm1 \n\t"
"paddw 2*3+8(%1), %%mm2 \n\t"
"paddw 2*2+0(%1), %%mm3 \n\t"
"paddw 2*2+8(%1), %%mm4 \n\t"
"pmullw %%mm5, %%mm3 \n\t"
"pmullw %%mm5, %%mm4 \n\t"
"psubw %%mm1, %%mm3 \n\t"
"psubw %%mm2, %%mm4 \n\t"
NORMALIZE_MMX("$7")
/* Remove bias */
"paddw %%mm6, %%mm3 \n\t"
"paddw %%mm6, %%mm4 \n\t"
TRANSFER_DO_PACK
"add $24, %1 \n\t"
"add %3, %2 \n\t"
"dec %0 \n\t"
"jnz 1b \n\t"
: "+g"(h), "+r" (src), "+r" (dst)
: "g"(stride), "m"(rnd), "m"(fact_9), "m"(ff_pw_128)
: "memory"
);
}
/**
* Purely vertical or horizontal 1/2 shift interpolation.
* Sacrify mm6 for *9 factor.
*/
static void vc1_put_shift2_mmx(uint8_t *dst, const uint8_t *src,
long int stride, int rnd, long int offset)
{
int h = 8;
rnd = 8-rnd;
asm volatile(
LOAD_ROUNDER_MMX("%6")
"movq %8, %%mm6 \n\t"
"1: \n\t"
"movd 0(%1 ), %%mm3 \n\t"
"movd 4(%1 ), %%mm4 \n\t"
"movd 0(%1,%3), %%mm1 \n\t"
"movd 4(%1,%3), %%mm2 \n\t"
"add %3, %1 \n\t"
"punpcklbw %%mm0, %%mm3 \n\t"
"punpcklbw %%mm0, %%mm4 \n\t"
"punpcklbw %%mm0, %%mm1 \n\t"
"punpcklbw %%mm0, %%mm2 \n\t"
"paddw %%mm1, %%mm3 \n\t"
"paddw %%mm2, %%mm4 \n\t"
"movd 0(%1,%4), %%mm1 \n\t"
"movd 4(%1,%4), %%mm2 \n\t"
"pmullw %%mm6, %%mm3 \n\t" /* 0,9,9,0*/
"pmullw %%mm6, %%mm4 \n\t" /* 0,9,9,0*/
"punpcklbw %%mm0, %%mm1 \n\t"
"punpcklbw %%mm0, %%mm2 \n\t"
"psubw %%mm1, %%mm3 \n\t" /*-1,9,9,0*/
"psubw %%mm2, %%mm4 \n\t" /*-1,9,9,0*/
"movd 0(%1,%3), %%mm1 \n\t"
"movd 4(%1,%3), %%mm2 \n\t"
"punpcklbw %%mm0, %%mm1 \n\t"
"punpcklbw %%mm0, %%mm2 \n\t"
"psubw %%mm1, %%mm3 \n\t" /*-1,9,9,-1*/
"psubw %%mm2, %%mm4 \n\t" /*-1,9,9,-1*/
NORMALIZE_MMX("$4")
TRANSFER_DO_PACK
"add %7, %1 \n\t"
"add %5, %2 \n\t"
"dec %0 \n\t"
"jnz 1b \n\t"
: "+g"(h), "+r"(src), "+r"(dst)
: "r"(offset), "r"(-2*offset), "g"(stride), "m"(rnd),
"g"(stride-offset), "m"(fact_9)
: "memory"
);
}
/**
* Filter coefficients made global to allow access by all 1 or 3 quarter shift
* interpolation functions.
*/
DECLARE_ALIGNED_16(static const uint64_t, fact_53) = 0x0035003500350035ULL;
DECLARE_ALIGNED_16(static const uint64_t, fact_18) = 0x0012001200120012ULL;
/**
* Core of the 1/4 and 3/4 shift bicubic interpolation.
*
* @param UNPACK Macro unpacking arguments from 8 to 16bits (can be empty).
* @param MOVQ "movd 1" or "movq 2", if data read is already unpacked.
* @param A1 Address of 1st tap (beware of unpacked/packed).
* @param A2 Address of 2nd tap
* @param A3 Address of 3rd tap
* @param A4 Address of 4th tap
*/
#define MSPEL_FILTER13_CORE(UNPACK, MOVQ, A1, A2, A3, A4, POS) \
MOVQ "*0+"A1", %%mm1 \n\t" \
MOVQ "*4+"A1", %%mm2 \n\t" \
UNPACK("%%mm1") \
UNPACK("%%mm2") \
"pmullw "POS", %%mm1 \n\t" \
"pmullw "POS", %%mm2 \n\t" \
MOVQ "*0+"A2", %%mm3 \n\t" \
MOVQ "*4+"A2", %%mm4 \n\t" \
UNPACK("%%mm3") \
UNPACK("%%mm4") \
"pmullw %%mm6, %%mm3 \n\t" /* *18 */ \
"pmullw %%mm6, %%mm4 \n\t" /* *18 */ \
"psubw %%mm1, %%mm3 \n\t" /* 18,-3 */ \
"psubw %%mm2, %%mm4 \n\t" /* 18,-3 */ \
MOVQ "*0+"A4", %%mm1 \n\t" \
MOVQ "*4+"A4", %%mm2 \n\t" \
UNPACK("%%mm1") \
UNPACK("%%mm2") \
"psllw $2, %%mm1 \n\t" /* 4* */ \
"psllw $2, %%mm2 \n\t" /* 4* */ \
"psubw %%mm1, %%mm3 \n\t" /* -4,18,-3 */ \
"psubw %%mm2, %%mm4 \n\t" /* -4,18,-3 */ \
MOVQ "*0+"A3", %%mm1 \n\t" \
MOVQ "*4+"A3", %%mm2 \n\t" \
UNPACK("%%mm1") \
UNPACK("%%mm2") \
"pmullw %%mm5, %%mm1 \n\t" /* *53 */ \
"pmullw %%mm5, %%mm2 \n\t" /* *53 */ \
"paddw %%mm1, %%mm3 \n\t" /* 4,53,18,-3 */ \
"paddw %%mm2, %%mm4 \n\t" /* 4,53,18,-3 */
/**
* Macro to build the vertical 16bits version of vc1_put_shift[13].
* Here, offset=src_stride. Parameters passed A1 to A4 must use
* %3 (src_stride) and %4 (3*src_stride).
*
* @param NAME Either 1 or 3
* @see MSPEL_FILTER13_CORE for information on A1->A4
*/
#define MSPEL_FILTER13_VER_16B(NAME, A1, A2, A3, A4) \
static void \
vc1_put_ver_16b_ ## NAME ## _mmx(int16_t *dst, const uint8_t *src, \
long int src_stride, \
int rnd, int64_t shift) \
{ \
int h = 8; \
src -= src_stride; \
asm volatile( \
LOAD_ROUNDER_MMX("%5") \
"movq %7, %%mm5 \n\t" \
"movq %8, %%mm6 \n\t" \
ASMALIGN(3) \
"1: \n\t" \
MSPEL_FILTER13_CORE(DO_UNPACK, "movd 1", A1, A2, A3, A4, "%9") \
NORMALIZE_MMX("%6") \
TRANSFER_DONT_PACK \
/* Last 3 (in fact 4) bytes on the line */ \
"movd 8+"A1", %%mm1 \n\t" \
DO_UNPACK("%%mm1") \
"movq %%mm1, %%mm3 \n\t" \
"paddw %%mm1, %%mm1 \n\t" \
"paddw %%mm3, %%mm1 \n\t" /* 3* */ \
"movd 8+"A2", %%mm3 \n\t" \
DO_UNPACK("%%mm3") \
"pmullw %%mm6, %%mm3 \n\t" /* *18 */ \
"psubw %%mm1, %%mm3 \n\t" /*18,-3 */ \
"movd 8+"A3", %%mm1 \n\t" \
DO_UNPACK("%%mm1") \
"pmullw %%mm5, %%mm1 \n\t" /* *53 */ \
"paddw %%mm1, %%mm3 \n\t" /*53,18,-3 */ \
"movd 8+"A4", %%mm1 \n\t" \
DO_UNPACK("%%mm1") \
"psllw $2, %%mm1 \n\t" /* 4* */ \
"psubw %%mm1, %%mm3 \n\t" \
"paddw %%mm7, %%mm3 \n\t" \
"psraw %6, %%mm3 \n\t" \
"movq %%mm3, 16(%2) \n\t" \
"add %3, %1 \n\t" \
"add $24, %2 \n\t" \
"dec %0 \n\t" \
"jnz 1b \n\t" \
: "+g"(h), "+r" (src), "+r" (dst) \
: "r"(src_stride), "r"(3*src_stride), \
"m"(rnd), "m"(shift), \
"m"(fact_53), "m"(fact_18), "m"(ff_pw_3) \
: "memory" \
); \
}
/**
* Macro to build the horizontal 16bits version of vc1_put_shift[13].
* Here, offset=16bits, so parameters passed A1 to A4 should be simple.
*
* @param NAME Either 1 or 3
* @see MSPEL_FILTER13_CORE for information on A1->A4
*/
#define MSPEL_FILTER13_HOR_16B(NAME, A1, A2, A3, A4) \
static void \
vc1_put_hor_16b_ ## NAME ## _mmx(uint8_t *dst, long int stride, \
const int16_t *src, int rnd) \
{ \
int h = 8; \
src -= 1; \
rnd -= (-4+58+13-3)*256; /* Add -256 bias */ \
asm volatile( \
LOAD_ROUNDER_MMX("%4") \
"movq %6, %%mm6 \n\t" \
"movq %5, %%mm5 \n\t" \
ASMALIGN(3) \
"1: \n\t" \
MSPEL_FILTER13_CORE(DONT_UNPACK, "movq 2", A1, A2, A3, A4, "%8")\
NORMALIZE_MMX("$7") \
/* Remove bias */ \
"paddw %7, %%mm3 \n\t" \
"paddw %7, %%mm4 \n\t" \
TRANSFER_DO_PACK \
"add $24, %1 \n\t" \
"add %3, %2 \n\t" \
"dec %0 \n\t" \
"jnz 1b \n\t" \
: "+g"(h), "+r" (src), "+r" (dst) \
: "g"(stride), "m"(rnd), "m"(fact_53), "m"(fact_18), \
"m"(ff_pw_128), "m"(ff_pw_3) \
: "memory" \
); \
}
/**
* Macro to build the 8bits, any direction, version of vc1_put_shift[13].
* Here, offset=src_stride. Parameters passed A1 to A4 must use
* %3 (offset) and %4 (3*offset).
*
* @param NAME Either 1 or 3
* @see MSPEL_FILTER13_CORE for information on A1->A4
*/
#define MSPEL_FILTER13_8B(NAME, A1, A2, A3, A4) \
static void \
vc1_put_## NAME ## _mmx(uint8_t *dst, const uint8_t *src, \
long int stride, int rnd, long int offset) \
{ \
int h = 8; \
src -= offset; \
rnd = 32-rnd; \
asm volatile ( \
LOAD_ROUNDER_MMX("%6") \
"movq %7, %%mm5 \n\t" \
"movq %8, %%mm6 \n\t" \
ASMALIGN(3) \
"1: \n\t" \
MSPEL_FILTER13_CORE(DO_UNPACK, "movd 1", A1, A2, A3, A4, "%9")\
NORMALIZE_MMX("$6") \
TRANSFER_DO_PACK \
"add %5, %1 \n\t" \
"add %5, %2 \n\t" \
"dec %0 \n\t" \
"jnz 1b \n\t" \
: "+g"(h), "+r" (src), "+r" (dst) \
: "r"(offset), "r"(3*offset), "g"(stride), "m"(rnd), \
"m"(fact_53), "m"(fact_18), "m"(ff_pw_3) \
: "memory" \
); \
}
/** 1/4 shift bicubic interpolation */
MSPEL_FILTER13_8B (shift1, "0(%1,%4 )", "0(%1,%3,2)", "0(%1,%3 )", "0(%1 )")
MSPEL_FILTER13_VER_16B(shift1, "0(%1,%4 )", "0(%1,%3,2)", "0(%1,%3 )", "0(%1 )")
MSPEL_FILTER13_HOR_16B(shift1, "2*3(%1)", "2*2(%1)", "2*1(%1)", "2*0(%1)")
/** 3/4 shift bicubic interpolation */
MSPEL_FILTER13_8B (shift3, "0(%1 )", "0(%1,%3 )", "0(%1,%3,2)", "0(%1,%4 )")
MSPEL_FILTER13_VER_16B(shift3, "0(%1 )", "0(%1,%3 )", "0(%1,%3,2)", "0(%1,%4 )")
MSPEL_FILTER13_HOR_16B(shift3, "2*0(%1)", "2*1(%1)", "2*2(%1)", "2*3(%1)")
typedef void (*vc1_mspel_mc_filter_ver_16bits)(int16_t *dst, const uint8_t *src, long int src_stride, int rnd, int64_t shift);
typedef void (*vc1_mspel_mc_filter_hor_16bits)(uint8_t *dst, long int dst_stride, const int16_t *src, int rnd);
typedef void (*vc1_mspel_mc_filter_8bits)(uint8_t *dst, const uint8_t *src, long int stride, int rnd, long int offset);
/**
* Interpolates fractional pel values by applying proper vertical then
* horizontal filter.
*
* @param dst Destination buffer for interpolated pels.
* @param src Source buffer.
* @param stride Stride for both src and dst buffers.
* @param hmode Horizontal filter (expressed in quarter pixels shift).
* @param hmode Vertical filter.
* @param rnd Rounding bias.
*/
static void vc1_mspel_mc(uint8_t *dst, const uint8_t *src, int stride,
int hmode, int vmode, int rnd)
{
static const vc1_mspel_mc_filter_ver_16bits vc1_put_shift_ver_16bits[] =
{ NULL, vc1_put_ver_16b_shift1_mmx, vc1_put_ver_16b_shift2_mmx, vc1_put_ver_16b_shift3_mmx };
static const vc1_mspel_mc_filter_hor_16bits vc1_put_shift_hor_16bits[] =
{ NULL, vc1_put_hor_16b_shift1_mmx, vc1_put_hor_16b_shift2_mmx, vc1_put_hor_16b_shift3_mmx };
static const vc1_mspel_mc_filter_8bits vc1_put_shift_8bits[] =
{ NULL, vc1_put_shift1_mmx, vc1_put_shift2_mmx, vc1_put_shift3_mmx };
asm volatile(
"pxor %%mm0, %%mm0 \n\t"
::: "memory"
);
if (vmode) { /* Vertical filter to apply */
if (hmode) { /* Horizontal filter to apply, output to tmp */
static const int shift_value[] = { 0, 5, 1, 5 };
int shift = (shift_value[hmode]+shift_value[vmode])>>1;
int r;
DECLARE_ALIGNED_16(int16_t, tmp[12*8]);
r = (1<<(shift-1)) + rnd-1;
vc1_put_shift_ver_16bits[vmode](tmp, src-1, stride, r, shift);
vc1_put_shift_hor_16bits[hmode](dst, stride, tmp+1, 64-rnd);
return;
}
else { /* No horizontal filter, output 8 lines to dst */
vc1_put_shift_8bits[vmode](dst, src, stride, 1-rnd, stride);
return;
}
}
/* Horizontal mode with no vertical mode */
vc1_put_shift_8bits[hmode](dst, src, stride, rnd, 1);
}
void ff_put_vc1_mspel_mc00_mmx(uint8_t *dst, const uint8_t *src, int stride, int rnd);
/** Macro to ease bicubic filter interpolation functions declarations */
#define DECLARE_FUNCTION(a, b) \
static void put_vc1_mspel_mc ## a ## b ## _mmx(uint8_t *dst, const uint8_t *src, int stride, int rnd) { \
vc1_mspel_mc(dst, src, stride, a, b, rnd); \
}
DECLARE_FUNCTION(0, 1)
DECLARE_FUNCTION(0, 2)
DECLARE_FUNCTION(0, 3)
DECLARE_FUNCTION(1, 0)
DECLARE_FUNCTION(1, 1)
DECLARE_FUNCTION(1, 2)
DECLARE_FUNCTION(1, 3)
DECLARE_FUNCTION(2, 0)
DECLARE_FUNCTION(2, 1)
DECLARE_FUNCTION(2, 2)
DECLARE_FUNCTION(2, 3)
DECLARE_FUNCTION(3, 0)
DECLARE_FUNCTION(3, 1)
DECLARE_FUNCTION(3, 2)
DECLARE_FUNCTION(3, 3)
void ff_vc1dsp_init_mmx(DSPContext* dsp, AVCodecContext *avctx) {
dsp->put_vc1_mspel_pixels_tab[ 0] = ff_put_vc1_mspel_mc00_mmx;
dsp->put_vc1_mspel_pixels_tab[ 4] = put_vc1_mspel_mc01_mmx;
dsp->put_vc1_mspel_pixels_tab[ 8] = put_vc1_mspel_mc02_mmx;
dsp->put_vc1_mspel_pixels_tab[12] = put_vc1_mspel_mc03_mmx;
dsp->put_vc1_mspel_pixels_tab[ 1] = put_vc1_mspel_mc10_mmx;
dsp->put_vc1_mspel_pixels_tab[ 5] = put_vc1_mspel_mc11_mmx;
dsp->put_vc1_mspel_pixels_tab[ 9] = put_vc1_mspel_mc12_mmx;
dsp->put_vc1_mspel_pixels_tab[13] = put_vc1_mspel_mc13_mmx;
dsp->put_vc1_mspel_pixels_tab[ 2] = put_vc1_mspel_mc20_mmx;
dsp->put_vc1_mspel_pixels_tab[ 6] = put_vc1_mspel_mc21_mmx;
dsp->put_vc1_mspel_pixels_tab[10] = put_vc1_mspel_mc22_mmx;
dsp->put_vc1_mspel_pixels_tab[14] = put_vc1_mspel_mc23_mmx;
dsp->put_vc1_mspel_pixels_tab[ 3] = put_vc1_mspel_mc30_mmx;
dsp->put_vc1_mspel_pixels_tab[ 7] = put_vc1_mspel_mc31_mmx;
dsp->put_vc1_mspel_pixels_tab[11] = put_vc1_mspel_mc32_mmx;
dsp->put_vc1_mspel_pixels_tab[15] = put_vc1_mspel_mc33_mmx;
}