[FFmpeg-cvslog] Move png mmx functions into x86/png_mmx.c, remove them from DSPContext.
Baptiste Coudurier
git at videolan.org
Wed Apr 27 20:09:39 CEST 2011
ffmpeg | branch: master | Baptiste Coudurier <baptiste.coudurier at gmail.com> | Wed Apr 27 18:34:10 2011 +0200| [6d4c49a2afdb823418297bb9157890b80d45c0fe] | committer: Michael Niedermayer
Move png mmx functions into x86/png_mmx.c, remove them from DSPContext.
Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=6d4c49a2afdb823418297bb9157890b80d45c0fe
---
libavcodec/dsputil.c | 16 -----
libavcodec/dsputil.h | 2 -
libavcodec/png.h | 40 ++++++++++++
libavcodec/pngdec.c | 83 +++++++++++--------------
libavcodec/x86/Makefile | 1 +
libavcodec/x86/dsputil_mmx.c | 99 -----------------------------
libavcodec/x86/png_mmx.c | 141 ++++++++++++++++++++++++++++++++++++++++++
7 files changed, 218 insertions(+), 164 deletions(-)
diff --git a/libavcodec/dsputil.c b/libavcodec/dsputil.c
index 90e6440..d8e83f8 100644
--- a/libavcodec/dsputil.c
+++ b/libavcodec/dsputil.c
@@ -38,7 +38,6 @@
#include "config.h"
#include "ac3dec.h"
#include "vorbis.h"
-#include "png.h"
uint8_t ff_cropTbl[256 + 2 * MAX_NEG_CROP] = {0, };
uint32_t ff_squareTbl[512] = {0, };
@@ -1924,17 +1923,6 @@ static void add_bytes_c(uint8_t *dst, uint8_t *src, int w){
dst[i+0] += src[i+0];
}
-static void add_bytes_l2_c(uint8_t *dst, uint8_t *src1, uint8_t *src2, int w){
- long i;
- for(i=0; i<=w-sizeof(long); i+=sizeof(long)){
- long a = *(long*)(src1+i);
- long b = *(long*)(src2+i);
- *(long*)(dst+i) = ((a&pb_7f) + (b&pb_7f)) ^ ((a^b)&pb_80);
- }
- for(; i<w; i++)
- dst[i] = src1[i]+src2[i];
-}
-
static void diff_bytes_c(uint8_t *dst, uint8_t *src1, uint8_t *src2, int w){
long i;
#if !HAVE_FAST_UNALIGNED
@@ -3087,7 +3075,6 @@ av_cold void dsputil_init(DSPContext* c, AVCodecContext *avctx)
c->ssd_int8_vs_int16 = ssd_int8_vs_int16_c;
c->add_bytes= add_bytes_c;
- c->add_bytes_l2= add_bytes_l2_c;
c->diff_bytes= diff_bytes_c;
c->add_hfyu_median_prediction= add_hfyu_median_prediction_c;
c->sub_hfyu_median_prediction= sub_hfyu_median_prediction_c;
@@ -3095,9 +3082,6 @@ av_cold void dsputil_init(DSPContext* c, AVCodecContext *avctx)
c->add_hfyu_left_prediction_bgr32 = add_hfyu_left_prediction_bgr32_c;
c->bswap_buf= bswap_buf;
c->bswap16_buf = bswap16_buf;
-#if CONFIG_PNG_DECODER
- c->add_png_paeth_prediction= ff_add_png_paeth_prediction;
-#endif
if (CONFIG_H263_DECODER || CONFIG_H263_ENCODER) {
c->h263_h_loop_filter= h263_h_loop_filter_c;
diff --git a/libavcodec/dsputil.h b/libavcodec/dsputil.h
index 8240372..85c2da5 100644
--- a/libavcodec/dsputil.h
+++ b/libavcodec/dsputil.h
@@ -371,7 +371,6 @@ typedef struct DSPContext {
/* huffyuv specific */
void (*add_bytes)(uint8_t *dst/*align 16*/, uint8_t *src/*align 16*/, int w);
- void (*add_bytes_l2)(uint8_t *dst/*align 16*/, uint8_t *src1/*align 16*/, uint8_t *src2/*align 16*/, int w);
void (*diff_bytes)(uint8_t *dst/*align 16*/, uint8_t *src1/*align 16*/, uint8_t *src2/*align 1*/,int w);
/**
* subtract huffyuv's variant of median prediction
@@ -382,7 +381,6 @@ typedef struct DSPContext {
int (*add_hfyu_left_prediction)(uint8_t *dst, const uint8_t *src, int w, int left);
void (*add_hfyu_left_prediction_bgr32)(uint8_t *dst, const uint8_t *src, int w, int *red, int *green, int *blue, int *alpha);
/* this might write to dst[w] */
- void (*add_png_paeth_prediction)(uint8_t *dst, uint8_t *src, uint8_t *top, int w, int bpp);
void (*bswap_buf)(uint32_t *dst, const uint32_t *src, int w);
void (*bswap16_buf)(uint16_t *dst, const uint16_t *src, int len);
diff --git a/libavcodec/png.h b/libavcodec/png.h
index bab5224..d6fac3e 100644
--- a/libavcodec/png.h
+++ b/libavcodec/png.h
@@ -23,6 +23,9 @@
#define AVCODEC_PNG_H
#include <stdint.h>
+#include <zlib.h>
+
+#include "avcodec.h"
#define PNG_COLOR_MASK_PALETTE 1
#define PNG_COLOR_MASK_COLOR 2
@@ -69,4 +72,41 @@ int ff_png_pass_row_size(int pass, int bits_per_pixel, int width);
void ff_add_png_paeth_prediction(uint8_t *dst, uint8_t *src, uint8_t *top, int w, int bpp);
+typedef struct PNGDecContext {
+ const uint8_t *bytestream;
+ const uint8_t *bytestream_start;
+ const uint8_t *bytestream_end;
+ AVFrame picture1, picture2;
+ AVFrame *current_picture, *last_picture;
+
+ int state;
+ int width, height;
+ int bit_depth;
+ int color_type;
+ int compression_type;
+ int interlace_type;
+ int filter_type;
+ int channels;
+ int bits_per_pixel;
+ int bpp;
+
+ uint8_t *image_buf;
+ int image_linesize;
+ uint32_t palette[256];
+ uint8_t *crow_buf;
+ uint8_t *last_row;
+ uint8_t *tmp_row;
+ int pass;
+ int crow_size; /* compressed row size (include filter type) */
+ int row_size; /* decompressed row size */
+ int pass_row_size; /* decompress row size of the current pass */
+ int y;
+ z_stream zstream;
+
+ void (*add_bytes_l2)(uint8_t *dst, uint8_t *src1, uint8_t *src2, int w);
+ void (*add_paeth_prediction)(uint8_t *dst, uint8_t *src, uint8_t *top, int w, int bpp);
+} PNGDecContext;
+
+void ff_png_init_mmx(PNGDecContext *s);
+
#endif /* AVCODEC_PNG_H */
diff --git a/libavcodec/pngdec.c b/libavcodec/pngdec.c
index 2f9b343..17fea68 100644
--- a/libavcodec/pngdec.c
+++ b/libavcodec/pngdec.c
@@ -18,11 +18,13 @@
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+
+//#define DEBUG
+
#include "libavutil/imgutils.h"
#include "avcodec.h"
#include "bytestream.h"
#include "png.h"
-#include "dsputil.h"
/* TODO:
* - add 2, 4 and 16 bit depth support
@@ -30,42 +32,6 @@
#include <zlib.h>
-//#define DEBUG
-
-typedef struct PNGDecContext {
- DSPContext dsp;
-
- const uint8_t *bytestream;
- const uint8_t *bytestream_start;
- const uint8_t *bytestream_end;
- AVFrame picture1, picture2;
- AVFrame *current_picture, *last_picture;
-
- int state;
- int width, height;
- int bit_depth;
- int color_type;
- int compression_type;
- int interlace_type;
- int filter_type;
- int channels;
- int bits_per_pixel;
- int bpp;
-
- uint8_t *image_buf;
- int image_linesize;
- uint32_t palette[256];
- uint8_t *crow_buf;
- uint8_t *last_row;
- uint8_t *tmp_row;
- int pass;
- int crow_size; /* compressed row size (include filter type) */
- int row_size; /* decompressed row size */
- int pass_row_size; /* decompress row size of the current pass */
- int y;
- z_stream zstream;
-} PNGDecContext;
-
/* Mask to determine which y pixels can be written in a pass */
static const uint8_t png_pass_dsp_ymask[NB_PASSES] = {
0xff, 0xff, 0x0f, 0xcc, 0x33, 0xff, 0x55,
@@ -134,7 +100,23 @@ static void png_put_interlaced_row(uint8_t *dst, int width,
}
}
-void ff_add_png_paeth_prediction(uint8_t *dst, uint8_t *src, uint8_t *top, int w, int bpp)
+// 0x7f7f7f7f or 0x7f7f7f7f7f7f7f7f or whatever, depending on the cpu's native arithmetic size
+#define pb_7f (~0UL/255 * 0x7f)
+#define pb_80 (~0UL/255 * 0x80)
+
+static void add_bytes_l2_c(uint8_t *dst, uint8_t *src1, uint8_t *src2, int w)
+{
+ long i;
+ for(i=0; i<=w-sizeof(long); i+=sizeof(long)){
+ long a = *(long*)(src1+i);
+ long b = *(long*)(src2+i);
+ *(long*)(dst+i) = ((a&pb_7f) + (b&pb_7f)) ^ ((a^b)&pb_80);
+ }
+ for(; i<w; i++)
+ dst[i] = src1[i]+src2[i];
+}
+
+static void add_paeth_prediction_c(uint8_t *dst, uint8_t *src, uint8_t *top, int w, int bpp)
{
int i;
for(i = 0; i < w; i++) {
@@ -191,7 +173,7 @@ void ff_add_png_paeth_prediction(uint8_t *dst, uint8_t *src, uint8_t *top, int w
}
/* NOTE: 'dst' can be equal to 'last' */
-static void png_filter_row(DSPContext *dsp, uint8_t *dst, int filter_type,
+static void png_filter_row(PNGDecContext *s, uint8_t *dst, int filter_type,
uint8_t *src, uint8_t *last, int size, int bpp)
{
int i, p, r, g, b, a;
@@ -217,7 +199,7 @@ static void png_filter_row(DSPContext *dsp, uint8_t *dst, int filter_type,
}
break;
case PNG_FILTER_VALUE_UP:
- dsp->add_bytes_l2(dst, src, last, size);
+ s->add_bytes_l2(dst, src, last, size);
break;
case PNG_FILTER_VALUE_AVG:
for(i = 0; i < bpp; i++) {
@@ -235,10 +217,10 @@ static void png_filter_row(DSPContext *dsp, uint8_t *dst, int filter_type,
if(bpp > 1 && size > 4) {
// would write off the end of the array if we let it process the last pixel with bpp=3
int w = bpp==4 ? size : size-3;
- dsp->add_png_paeth_prediction(dst+i, src+i, last+i, w-i, bpp);
+ s->add_paeth_prediction(dst+i, src+i, last+i, w-i, bpp);
i = w;
}
- ff_add_png_paeth_prediction(dst+i, src+i, last+i, size-i, bpp);
+ add_paeth_prediction_c(dst+i, src+i, last+i, size-i, bpp);
break;
}
}
@@ -291,7 +273,7 @@ static void png_handle_row(PNGDecContext *s)
ptr = s->image_buf + s->image_linesize * s->y;
/* need to swap bytes correctly for RGB_ALPHA */
if (s->color_type == PNG_COLOR_TYPE_RGB_ALPHA) {
- png_filter_row(&s->dsp, s->tmp_row, s->crow_buf[0], s->crow_buf + 1,
+ png_filter_row(s, s->tmp_row, s->crow_buf[0], s->crow_buf + 1,
s->last_row, s->row_size, s->bpp);
convert_to_rgb32(ptr, s->tmp_row, s->width, s->filter_type == PNG_FILTER_TYPE_LOCO);
FFSWAP(uint8_t*, s->last_row, s->tmp_row);
@@ -302,7 +284,7 @@ static void png_handle_row(PNGDecContext *s)
else
last_row = ptr - s->image_linesize;
- png_filter_row(&s->dsp, ptr, s->crow_buf[0], s->crow_buf + 1,
+ png_filter_row(s, ptr, s->crow_buf[0], s->crow_buf + 1,
last_row, s->row_size, s->bpp);
}
/* loco lags by 1 row so that it doesn't interfere with top prediction */
@@ -325,7 +307,7 @@ static void png_handle_row(PNGDecContext *s)
wait for the next one */
if (got_line)
break;
- png_filter_row(&s->dsp, s->tmp_row, s->crow_buf[0], s->crow_buf + 1,
+ png_filter_row(s, s->tmp_row, s->crow_buf[0], s->crow_buf + 1,
s->last_row, s->pass_row_size, s->bpp);
FFSWAP(uint8_t*, s->last_row, s->tmp_row);
got_line = 1;
@@ -633,14 +615,21 @@ static int decode_frame(AVCodecContext *avctx,
goto the_end;
}
-static av_cold int png_dec_init(AVCodecContext *avctx){
+static av_cold int png_dec_init(AVCodecContext *avctx)
+{
PNGDecContext *s = avctx->priv_data;
s->current_picture = &s->picture1;
s->last_picture = &s->picture2;
avcodec_get_frame_defaults(&s->picture1);
avcodec_get_frame_defaults(&s->picture2);
- dsputil_init(&s->dsp, avctx);
+
+ ff_png_init_mmx(s);
+
+ if (!s->add_paeth_prediction)
+ s->add_paeth_prediction = add_paeth_prediction_c;
+ if (!s->add_bytes_l2)
+ s->add_bytes_l2 = add_bytes_l2_c;
return 0;
}
diff --git a/libavcodec/x86/Makefile b/libavcodec/x86/Makefile
index f8d456d..6416e60 100644
--- a/libavcodec/x86/Makefile
+++ b/libavcodec/x86/Makefile
@@ -25,6 +25,7 @@ MMX-OBJS-$(CONFIG_MP2FLOAT_DECODER) += x86/mpegaudiodec_mmx.o
MMX-OBJS-$(CONFIG_MP3FLOAT_DECODER) += x86/mpegaudiodec_mmx.o
MMX-OBJS-$(CONFIG_MP3ON4FLOAT_DECODER) += x86/mpegaudiodec_mmx.o
MMX-OBJS-$(CONFIG_MP3ADUFLOAT_DECODER) += x86/mpegaudiodec_mmx.o
+MMX-OBJS-$(CONFIG_PNG_DECODER) += x86/png_mmx.o
MMX-OBJS-$(CONFIG_ENCODERS) += x86/dsputilenc_mmx.o
YASM-OBJS-$(CONFIG_ENCODERS) += x86/dsputilenc_yasm.o
MMX-OBJS-$(CONFIG_GPL) += x86/idct_mmx.o
diff --git a/libavcodec/x86/dsputil_mmx.c b/libavcodec/x86/dsputil_mmx.c
index 1b17d0e..985a15d 100644
--- a/libavcodec/x86/dsputil_mmx.c
+++ b/libavcodec/x86/dsputil_mmx.c
@@ -579,28 +579,6 @@ static void add_bytes_mmx(uint8_t *dst, uint8_t *src, int w){
dst[i+0] += src[i+0];
}
-static void add_bytes_l2_mmx(uint8_t *dst, uint8_t *src1, uint8_t *src2, int w){
- x86_reg i=0;
- __asm__ volatile(
- "jmp 2f \n\t"
- "1: \n\t"
- "movq (%2, %0), %%mm0 \n\t"
- "movq 8(%2, %0), %%mm1 \n\t"
- "paddb (%3, %0), %%mm0 \n\t"
- "paddb 8(%3, %0), %%mm1 \n\t"
- "movq %%mm0, (%1, %0) \n\t"
- "movq %%mm1, 8(%1, %0) \n\t"
- "add $16, %0 \n\t"
- "2: \n\t"
- "cmp %4, %0 \n\t"
- " js 1b \n\t"
- : "+r" (i)
- : "r"(dst), "r"(src1), "r"(src2), "r"((x86_reg)w-15)
- );
- for(; i<w; i++)
- dst[i] = src1[i] + src2[i];
-}
-
#if HAVE_7REGS && HAVE_TEN_OPERANDS
static void add_hfyu_median_prediction_cmov(uint8_t *dst, const uint8_t *top, const uint8_t *diff, int w, int *left, int *left_top) {
x86_reg w2 = -w;
@@ -876,80 +854,6 @@ static void draw_edges_mmx(uint8_t *buf, int wrap, int width, int height, int w,
}
}
-#define PAETH(cpu, abs3)\
-static void add_png_paeth_prediction_##cpu(uint8_t *dst, uint8_t *src, uint8_t *top, int w, int bpp)\
-{\
- x86_reg i = -bpp;\
- x86_reg end = w-3;\
- __asm__ volatile(\
- "pxor %%mm7, %%mm7 \n"\
- "movd (%1,%0), %%mm0 \n"\
- "movd (%2,%0), %%mm1 \n"\
- "punpcklbw %%mm7, %%mm0 \n"\
- "punpcklbw %%mm7, %%mm1 \n"\
- "add %4, %0 \n"\
- "1: \n"\
- "movq %%mm1, %%mm2 \n"\
- "movd (%2,%0), %%mm1 \n"\
- "movq %%mm2, %%mm3 \n"\
- "punpcklbw %%mm7, %%mm1 \n"\
- "movq %%mm2, %%mm4 \n"\
- "psubw %%mm1, %%mm3 \n"\
- "psubw %%mm0, %%mm4 \n"\
- "movq %%mm3, %%mm5 \n"\
- "paddw %%mm4, %%mm5 \n"\
- abs3\
- "movq %%mm4, %%mm6 \n"\
- "pminsw %%mm5, %%mm6 \n"\
- "pcmpgtw %%mm6, %%mm3 \n"\
- "pcmpgtw %%mm5, %%mm4 \n"\
- "movq %%mm4, %%mm6 \n"\
- "pand %%mm3, %%mm4 \n"\
- "pandn %%mm3, %%mm6 \n"\
- "pandn %%mm0, %%mm3 \n"\
- "movd (%3,%0), %%mm0 \n"\
- "pand %%mm1, %%mm6 \n"\
- "pand %%mm4, %%mm2 \n"\
- "punpcklbw %%mm7, %%mm0 \n"\
- "movq %6, %%mm5 \n"\
- "paddw %%mm6, %%mm0 \n"\
- "paddw %%mm2, %%mm3 \n"\
- "paddw %%mm3, %%mm0 \n"\
- "pand %%mm5, %%mm0 \n"\
- "movq %%mm0, %%mm3 \n"\
- "packuswb %%mm3, %%mm3 \n"\
- "movd %%mm3, (%1,%0) \n"\
- "add %4, %0 \n"\
- "cmp %5, %0 \n"\
- "jle 1b \n"\
- :"+r"(i)\
- :"r"(dst), "r"(top), "r"(src), "r"((x86_reg)bpp), "g"(end),\
- "m"(ff_pw_255)\
- :"memory"\
- );\
-}
-
-#define ABS3_MMX2\
- "psubw %%mm5, %%mm7 \n"\
- "pmaxsw %%mm7, %%mm5 \n"\
- "pxor %%mm6, %%mm6 \n"\
- "pxor %%mm7, %%mm7 \n"\
- "psubw %%mm3, %%mm6 \n"\
- "psubw %%mm4, %%mm7 \n"\
- "pmaxsw %%mm6, %%mm3 \n"\
- "pmaxsw %%mm7, %%mm4 \n"\
- "pxor %%mm7, %%mm7 \n"
-
-#define ABS3_SSSE3\
- "pabsw %%mm3, %%mm3 \n"\
- "pabsw %%mm4, %%mm4 \n"\
- "pabsw %%mm5, %%mm5 \n"
-
-PAETH(mmx2, ABS3_MMX2)
-#if HAVE_SSSE3
-PAETH(ssse3, ABS3_SSSE3)
-#endif
-
#define QPEL_V_LOW(m3,m4,m5,m6, pw_20, pw_3, rnd, in0, in1, in2, in7, out, OP)\
"paddw " #m4 ", " #m3 " \n\t" /* x1 */\
"movq "MANGLE(ff_pw_20)", %%mm4 \n\t" /* 20 */\
@@ -2537,7 +2441,6 @@ void dsputil_init_mmx(DSPContext* c, AVCodecContext *avctx)
#endif
c->add_bytes= add_bytes_mmx;
- c->add_bytes_l2= add_bytes_l2_mmx;
if (!h264_high_depth)
c->draw_edges = draw_edges_mmx;
@@ -2658,7 +2561,6 @@ void dsputil_init_mmx(DSPContext* c, AVCodecContext *avctx)
c->add_hfyu_median_prediction = add_hfyu_median_prediction_cmov;
#endif
- c->add_png_paeth_prediction= add_png_paeth_prediction_mmx2;
} else if (mm_flags & AV_CPU_FLAG_3DNOW) {
c->prefetch = prefetch_3dnow;
@@ -2772,7 +2674,6 @@ void dsputil_init_mmx(DSPContext* c, AVCodecContext *avctx)
H264_QPEL_FUNCS(3, 2, ssse3);
H264_QPEL_FUNCS(3, 3, ssse3);
}
- c->add_png_paeth_prediction= add_png_paeth_prediction_ssse3;
#if HAVE_YASM
if (!h264_high_depth) {
c->put_h264_chroma_pixels_tab[0]= ff_put_h264_chroma_mc8_ssse3_rnd;
diff --git a/libavcodec/x86/png_mmx.c b/libavcodec/x86/png_mmx.c
new file mode 100644
index 0000000..cdf0359
--- /dev/null
+++ b/libavcodec/x86/png_mmx.c
@@ -0,0 +1,141 @@
+/*
+ * MMX optimized PNG utils
+ * Copyright (c) 2008 Loren Merritt
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ */
+
+#include "libavutil/cpu.h"
+#include "libavutil/x86_cpu.h"
+#include "libavcodec/dsputil.h"
+#include "libavcodec/png.h"
+#include "dsputil_mmx.h"
+
+//#undef NDEBUG
+//#include <assert.h>
+
+static void add_bytes_l2_mmx(uint8_t *dst, uint8_t *src1, uint8_t *src2, int w)
+{
+ x86_reg i=0;
+ __asm__ volatile(
+ "jmp 2f \n\t"
+ "1: \n\t"
+ "movq (%2, %0), %%mm0 \n\t"
+ "movq 8(%2, %0), %%mm1 \n\t"
+ "paddb (%3, %0), %%mm0 \n\t"
+ "paddb 8(%3, %0), %%mm1 \n\t"
+ "movq %%mm0, (%1, %0) \n\t"
+ "movq %%mm1, 8(%1, %0) \n\t"
+ "add $16, %0 \n\t"
+ "2: \n\t"
+ "cmp %4, %0 \n\t"
+ " js 1b \n\t"
+ : "+r" (i)
+ : "r"(dst), "r"(src1), "r"(src2), "r"((x86_reg)w-15)
+ );
+ for(; i<w; i++)
+ dst[i] = src1[i] + src2[i];
+}
+
+#define PAETH(cpu, abs3)\
+static void add_paeth_prediction_##cpu(uint8_t *dst, uint8_t *src, uint8_t *top, int w, int bpp)\
+{\
+ x86_reg i = -bpp;\
+ x86_reg end = w-3;\
+ __asm__ volatile(\
+ "pxor %%mm7, %%mm7 \n"\
+ "movd (%1,%0), %%mm0 \n"\
+ "movd (%2,%0), %%mm1 \n"\
+ "punpcklbw %%mm7, %%mm0 \n"\
+ "punpcklbw %%mm7, %%mm1 \n"\
+ "add %4, %0 \n"\
+ "1: \n"\
+ "movq %%mm1, %%mm2 \n"\
+ "movd (%2,%0), %%mm1 \n"\
+ "movq %%mm2, %%mm3 \n"\
+ "punpcklbw %%mm7, %%mm1 \n"\
+ "movq %%mm2, %%mm4 \n"\
+ "psubw %%mm1, %%mm3 \n"\
+ "psubw %%mm0, %%mm4 \n"\
+ "movq %%mm3, %%mm5 \n"\
+ "paddw %%mm4, %%mm5 \n"\
+ abs3\
+ "movq %%mm4, %%mm6 \n"\
+ "pminsw %%mm5, %%mm6 \n"\
+ "pcmpgtw %%mm6, %%mm3 \n"\
+ "pcmpgtw %%mm5, %%mm4 \n"\
+ "movq %%mm4, %%mm6 \n"\
+ "pand %%mm3, %%mm4 \n"\
+ "pandn %%mm3, %%mm6 \n"\
+ "pandn %%mm0, %%mm3 \n"\
+ "movd (%3,%0), %%mm0 \n"\
+ "pand %%mm1, %%mm6 \n"\
+ "pand %%mm4, %%mm2 \n"\
+ "punpcklbw %%mm7, %%mm0 \n"\
+ "movq %6, %%mm5 \n"\
+ "paddw %%mm6, %%mm0 \n"\
+ "paddw %%mm2, %%mm3 \n"\
+ "paddw %%mm3, %%mm0 \n"\
+ "pand %%mm5, %%mm0 \n"\
+ "movq %%mm0, %%mm3 \n"\
+ "packuswb %%mm3, %%mm3 \n"\
+ "movd %%mm3, (%1,%0) \n"\
+ "add %4, %0 \n"\
+ "cmp %5, %0 \n"\
+ "jle 1b \n"\
+ :"+r"(i)\
+ :"r"(dst), "r"(top), "r"(src), "r"((x86_reg)bpp), "g"(end),\
+ "m"(ff_pw_255)\
+ :"memory"\
+ );\
+}
+
+#define ABS3_MMX2\
+ "psubw %%mm5, %%mm7 \n"\
+ "pmaxsw %%mm7, %%mm5 \n"\
+ "pxor %%mm6, %%mm6 \n"\
+ "pxor %%mm7, %%mm7 \n"\
+ "psubw %%mm3, %%mm6 \n"\
+ "psubw %%mm4, %%mm7 \n"\
+ "pmaxsw %%mm6, %%mm3 \n"\
+ "pmaxsw %%mm7, %%mm4 \n"\
+ "pxor %%mm7, %%mm7 \n"
+
+#define ABS3_SSSE3\
+ "pabsw %%mm3, %%mm3 \n"\
+ "pabsw %%mm4, %%mm4 \n"\
+ "pabsw %%mm5, %%mm5 \n"
+
+PAETH(mmx2, ABS3_MMX2)
+#if HAVE_SSSE3
+PAETH(ssse3, ABS3_SSSE3)
+#endif
+
+void ff_png_init_mmx(PNGDecContext *s)
+{
+ int mm_flags = av_get_cpu_flags();
+
+ if (mm_flags & AV_CPU_FLAG_MMX2) {
+ s->add_bytes_l2 = add_bytes_l2_mmx;
+ s->add_paeth_prediction = add_paeth_prediction_mmx2;
+#if HAVE_SSSE3
+ if (mm_flags & AV_CPU_FLAG_SSSE3)
+ s->add_paeth_prediction = add_paeth_prediction_ssse3;
+#endif
+ }
+}
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