[SCM] libav/experimental: altivec yuv->rgb converter orginal patch by (Marc Hoffman <mmh at pleasantst dot com>) critical fixes by (Reza Jelveh <reza.jelveh at tu-harburg dot de>)
siretart at users.alioth.debian.org
siretart at users.alioth.debian.org
Sun Jun 30 15:40:47 UTC 2013
The following commit has been merged in the experimental branch:
commit a31de95620a8eafda622347ccbed03c495e6092b
Author: Michael Niedermayer <michaelni at gmx.at>
Date: Sun Jun 27 00:07:15 2004 +0000
altivec yuv->rgb converter
orginal patch by (Marc Hoffman <mmh at pleasantst dot com>)
critical fixes by (Reza Jelveh <reza.jelveh at tu-harburg dot de>)
known bugs/issues, which should be fixed ASAP by someone who has a ppc:
0..255 vs. 16..235
unneeded recalculation of tables
general cleaup, like removing double initalizing of variables
Originally committed as revision 12699 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc
diff --git a/postproc/Makefile b/postproc/Makefile
index b030c72..06caa9a 100644
--- a/postproc/Makefile
+++ b/postproc/Makefile
@@ -4,8 +4,13 @@ include ../config.mak
SWSLIB = libswscale.a
SWSSRCS=swscale.c rgb2rgb.c yuv2rgb.c
+
SWSOBJS=$(SWSSRCS:.c=.o)
+ifeq ($(TARGET_ALTIVEC),yes)
+SWSOBJS += yuv2rgb_altivec.o
+endif
+
CFLAGS = $(OPTFLAGS) $(MLIB_INC) -I. -I.. $(EXTRA_INC)
# -I/usr/X11R6/include/
@@ -44,3 +49,4 @@ swscale-example: swscale-example.o $(SWSLIB)
ifneq ($(wildcard .depend),)
include .depend
endif
+
diff --git a/postproc/cs_test.c b/postproc/cs_test.c
index aad26e2..0e5fe4a 100644
--- a/postproc/cs_test.c
+++ b/postproc/cs_test.c
@@ -28,6 +28,10 @@
#define srcByte 0x55
#define dstByte 0xBB
+#ifdef __APPLE_CC__
+#define memalign(x,y) malloc(y)
+#endif
+
static int get_sws_cpuflags()
{
return (gCpuCaps.hasMMX ? SWS_CPU_CAPS_MMX : 0) |
@@ -281,4 +285,4 @@ main(int argc, char **argv)
printf("%d converters passed, %d converters randomly overwrote memory\n", passedNum, failedNum);
return failedNum;
-}
\ No newline at end of file
+}
diff --git a/postproc/swscale.c b/postproc/swscale.c
index f1c9bdb..67a75a9 100644
--- a/postproc/swscale.c
+++ b/postproc/swscale.c
@@ -1726,7 +1726,10 @@ int sws_setColorspaceDetails(SwsContext *c, const int inv_table[4], int srcRange
yuv2rgb_c_init_tables(c, inv_table, srcRange, brightness, contrast, saturation);
//FIXME factorize
-
+
+#ifdef HAVE_ALTIVEC
+ yuv2rgb_altivec_init_tables (c, inv_table);
+#endif
return 0;
}
diff --git a/postproc/swscale_internal.h b/postproc/swscale_internal.h
index 63cc9cd..c6d5a2f 100644
--- a/postproc/swscale_internal.h
+++ b/postproc/swscale_internal.h
@@ -132,6 +132,19 @@ typedef struct SwsContext{
int dstW;
int esp;
uint64_t vRounder __attribute__((aligned(8)));
+
+#ifdef HAVE_ALTIVEC
+
+ vector signed short CY;
+ vector signed short CRV;
+ vector signed short CBU;
+ vector signed short CGU;
+ vector signed short CGV;
+ vector signed short OY;
+ vector unsigned short CSHIFT;
+
+#endif
+
} SwsContext;
//FIXME check init (where 0)
diff --git a/postproc/swscale_template.c b/postproc/swscale_template.c
index 2d266f5..000f2e2 100644
--- a/postproc/swscale_template.c
+++ b/postproc/swscale_template.c
@@ -943,9 +943,15 @@ static inline void RENAME(yuv2packedX)(SwsContext *c, int16_t *lumFilter, int16_
break;
#endif
default:
+#ifdef HAVE_ALTIVEC
+ altivec_yuv2packedX (c, lumFilter, lumSrc, lumFilterSize,
+ chrFilter, chrSrc, chrFilterSize,
+ dest, dstW, dstY);
+#else
yuv2packedXinC(c, lumFilter, lumSrc, lumFilterSize,
chrFilter, chrSrc, chrFilterSize,
dest, dstW, dstY);
+#endif
break;
}
}
diff --git a/postproc/yuv2rgb.c b/postproc/yuv2rgb.c
index a8acec5..317ada9 100644
--- a/postproc/yuv2rgb.c
+++ b/postproc/yuv2rgb.c
@@ -607,6 +607,14 @@ SwsFunc yuv2rgb_get_func_ptr (SwsContext *c)
if(t) return t;
}
#endif
+#ifdef HAVE_ALTIVEC
+ if (c->flags & SWS_CPU_CAPS_ALTIVEC)
+ {
+ SwsFunc t = yuv2rgb_init_altivec(c);
+ if(t) return t;
+ }
+#endif
+
MSG_WARN("No accelerated colorspace conversion found\n");
switch(c->dstFormat){
diff --git a/postproc/yuv2rgb_altivec.c b/postproc/yuv2rgb_altivec.c
new file mode 100644
index 0000000..2ccbfa5
--- /dev/null
+++ b/postproc/yuv2rgb_altivec.c
@@ -0,0 +1,836 @@
+/*
+ marc.hoffman at analog.com March 8, 2004
+
+ Altivec Acceleration for Color Space Conversion revision 0.2
+
+ convert I420 YV12 to RGB in various formats,
+ it rejects images that are not in 420 formats
+ it rejects images that don't have widths of multiples of 16
+ it rejects images that don't have heights of multiples of 2
+ reject defers to C simulation codes.
+
+ lots of optimizations to be done here
+
+ 1. need to fix saturation code, I just couldn't get it to fly with packs and adds.
+ so we currently use max min to clip
+
+ 2. the inefficient use of chroma loading needs a bit of brushing up
+
+ 3. analysis of pipeline stalls needs to be done, use shark to identify pipeline stalls
+
+
+ MODIFIED to calculate coeffs from currently selected color space.
+ MODIFIED core to be a macro which you spec the output format.
+ ADDED UYVY conversion which is never called due to some thing in SWSCALE.
+ CORRECTED algorithim selection to be strict on input formats.
+ ADDED runtime detection of altivec.
+
+ ADDED altivec_yuv2packedX vertical scl + RGB converter
+
+ March 27,2004
+ PERFORMANCE ANALYSIS
+
+ The C version use 25% of the processor or ~250Mips for D1 video rawvideo used as test
+ The ALTIVEC version uses 10% of the processor or ~100Mips for D1 video same sequence
+
+ 720*480*30 ~10MPS
+
+ so we have roughly 10clocks per pixel this is too high something has to be wrong.
+
+ OPTIMIZED clip codes to utilize vec_max and vec_packs removing the need for vec_min.
+
+ OPTIMIZED DST OUTPUT cache/dma controls. we are pretty much
+ guaranteed to have the input video frame it was just decompressed so
+ it probably resides in L1 caches. However we are creating the
+ output video stream this needs to use the DSTST instruction to
+ optimize for the cache. We couple this with the fact that we are
+ not going to be visiting the input buffer again so we mark it Least
+ Recently Used. This shaves 25% of the processor cycles off.
+
+ Now MEMCPY is the largest mips consumer in the system, probably due
+ to the inefficient X11 stuff.
+
+ GL libraries seem to be very slow on this machine 1.33Ghz PB running
+ Jaguar, this is not the case for my 1Ghz PB. I thought it might be
+ a versioning issues, however i have libGL.1.2.dylib for both
+ machines. ((We need to figure this out now))
+
+ GL2 libraries work now with patch for RGB32
+
+ NOTE quartz vo driver ARGB32_to_RGB24 consumes 30% of the processor
+
+ Integrated luma prescaling adjustment for saturation/contrast/brightness adjustment.
+
+*/
+#include <stdio.h>
+#include <stdlib.h>
+#include <inttypes.h>
+#include <assert.h>
+#include "config.h"
+#include "rgb2rgb.h"
+#include "swscale.h"
+#include "swscale_internal.h"
+#include "../mangle.h"
+#include "../libvo/img_format.h" //FIXME try to reduce dependency of such stuff
+
+#undef PROFILE_THE_BEAST
+#undef INC_SCALING
+
+typedef unsigned char ubyte;
+typedef signed char sbyte;
+
+
+/* RGB interleaver, 16 planar pels 8-bit samples per channel in
+ homogeneous vector registers x0,x1,x2 are interleaved with the
+ following technique:
+
+ o0 = vec_mergeh (x0,x1);
+ o1 = vec_perm (o0, x2, perm_rgb_0);
+ o2 = vec_perm (o0, x2, perm_rgb_1);
+ o3 = vec_mergel (x0,x1);
+ o4 = vec_perm (o3,o2,perm_rgb_2);
+ o5 = vec_perm (o3,o2,perm_rgb_3);
+
+ perm_rgb_0: o0(RG).h v1(B) --> o1*
+ 0 1 2 3 4
+ rgbr|gbrg|brgb|rgbr
+ 0010 0100 1001 0010
+ 0102 3145 2673 894A
+
+ perm_rgb_1: o0(RG).h v1(B) --> o2
+ 0 1 2 3 4
+ gbrg|brgb|bbbb|bbbb
+ 0100 1001 1111 1111
+ B5CD 6EF7 89AB CDEF
+
+ perm_rgb_2: o3(RG).l o2(rgbB.l) --> o4*
+ 0 1 2 3 4
+ gbrg|brgb|rgbr|gbrg
+ 1111 1111 0010 0100
+ 89AB CDEF 0182 3945
+
+ perm_rgb_2: o3(RG).l o2(rgbB.l) ---> o5*
+ 0 1 2 3 4
+ brgb|rgbr|gbrg|brgb
+ 1001 0010 0100 1001
+ a67b 89cA BdCD eEFf
+
+*/
+static
+const vector unsigned char
+ perm_rgb_0 = (vector unsigned char)(0x00,0x01,0x10,0x02,0x03,0x11,0x04,0x05,
+ 0x12,0x06,0x07,0x13,0x08,0x09,0x14,0x0a),
+ perm_rgb_1 = (vector unsigned char)(0x0b,0x15,0x0c,0x0d,0x16,0x0e,0x0f,0x17,
+ 0x18,0x19,0x1a,0x1b,0x1c,0x1d,0x1e,0x1f),
+ perm_rgb_2 = (vector unsigned char)(0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17,
+ 0x00,0x01,0x18,0x02,0x03,0x19,0x04,0x05),
+ perm_rgb_3 = (vector unsigned char)(0x1a,0x06,0x07,0x1b,0x08,0x09,0x1c,0x0a,
+ 0x0b,0x1d,0x0c,0x0d,0x1e,0x0e,0x0f,0x1f);
+
+#define vec_merge3(x2,x1,x0,y0,y1,y2) \
+do { \
+ typeof(x0) o0,o2,o3; \
+ o0 = vec_mergeh (x0,x1); \
+ y0 = vec_perm (o0, x2, perm_rgb_0);\
+ o2 = vec_perm (o0, x2, perm_rgb_1);\
+ o3 = vec_mergel (x0,x1); \
+ y1 = vec_perm (o3,o2,perm_rgb_2); \
+ y2 = vec_perm (o3,o2,perm_rgb_3); \
+} while(0)
+
+#define vec_mstrgb24(x0,x1,x2,ptr) \
+do { \
+ typeof(x0) _0,_1,_2; \
+ vec_merge3 (x0,x1,x2,_0,_1,_2); \
+ vec_st (_0, 0, ptr++); \
+ vec_st (_1, 0, ptr++); \
+ vec_st (_2, 0, ptr++); \
+} while (0);
+
+#define vec_mstbgr24(x0,x1,x2,ptr) \
+do { \
+ typeof(x0) _0,_1,_2; \
+ vec_merge3 (x2,x1,x0,_0,_1,_2); \
+ vec_st (_0, 0, ptr++); \
+ vec_st (_1, 0, ptr++); \
+ vec_st (_2, 0, ptr++); \
+} while (0);
+
+/* pack the pixels in rgb0 format
+ msb R
+ lsb 0
+*/
+#define vec_mstrgb32(T,x0,x1,x2,x3,ptr) \
+do { \
+ T _0,_1,_2,_3; \
+ _0 = vec_mergeh (x0,x1); \
+ _1 = vec_mergeh (x2,x3); \
+ _2 = (T)vec_mergeh ((vector unsigned short)_0,(vector unsigned short)_1); \
+ _3 = (T)vec_mergel ((vector unsigned short)_0,(vector unsigned short)_1); \
+ vec_st (_2, 0*16, (T *)ptr); \
+ vec_st (_3, 1*16, (T *)ptr); \
+ _0 = vec_mergel (x0,x1); \
+ _1 = vec_mergel (x2,x3); \
+ _2 = (T)vec_mergeh ((vector unsigned short)_0,(vector unsigned short)_1); \
+ _3 = (T)vec_mergel ((vector unsigned short)_0,(vector unsigned short)_1); \
+ vec_st (_2, 2*16, (T *)ptr); \
+ vec_st (_3, 3*16, (T *)ptr); \
+ ptr += 4; \
+} while (0);
+
+/*
+
+ | 1 0 1.4021 | | Y |
+ | 1 -0.3441 -0.7142 |x| Cb|
+ | 1 1.7718 0 | | Cr|
+
+
+ Y: [-128 127]
+ Cb/Cr : [-128 127]
+
+ typical yuv conversion work on Y: 0-255 this version has been optimized for jpeg decode.
+
+*/
+
+
+
+
+#define vec_unh(x) \
+ (vector signed short) \
+ vec_perm(x,(typeof(x))(0),\
+ (vector unsigned char)(0x10,0x00,0x10,0x01,0x10,0x02,0x10,0x03,\
+ 0x10,0x04,0x10,0x05,0x10,0x06,0x10,0x07))
+#define vec_unl(x) \
+ (vector signed short) \
+ vec_perm(x,(typeof(x))(0),\
+ (vector unsigned char)(0x10,0x08,0x10,0x09,0x10,0x0A,0x10,0x0B,\
+ 0x10,0x0C,0x10,0x0D,0x10,0x0E,0x10,0x0F))
+
+#define vec_clip(x) \
+ vec_max (vec_min (x, (typeof(x))(255)), (typeof(x))(0))
+
+#define vec_packclp_a(x,y) \
+ (vector unsigned char)vec_pack (vec_clip (x), vec_clip (y))
+
+#define vec_packclp(x,y) \
+ (vector unsigned char)vec_packs \
+ ((vector unsigned short)vec_max (x,(vector signed short) (0)), \
+ (vector unsigned short)vec_max (y,(vector signed short) (0)))
+
+//#define out_pixels(a,b,c,ptr) vec_mstrgb32(typeof(a),((typeof (a))(0)),a,a,a,ptr)
+
+
+static inline cvtyuvtoRGB (SwsContext *c,
+ vector signed short Y, vector signed short U, vector signed short V,
+ vector signed short *R, vector signed short *G, vector signed short *B)
+{
+ vector signed short vx,ux,uvx;
+
+ Y = vec_mradds (Y, c->CY, c->OY);
+
+ U = vec_sub (U,(vector signed short)(128));
+ V = vec_sub (V,(vector signed short)(128));
+
+ // ux = (CBU*(u<<c->CSHIFT)+0x4000)>>15;
+ ux = vec_sl (U, c->CSHIFT);
+ *B = vec_mradds (ux, c->CBU, Y);
+
+ // vx = (CRV*(v<<c->CSHIFT)+0x4000)>>15;
+ vx = vec_sl (V, c->CSHIFT);
+ *R = vec_mradds (vx, c->CRV, Y);
+
+ // uvx = ((CGU*u) + (CGV*v))>>15;
+ uvx = vec_mradds (U, c->CGU, Y);
+ *G = vec_mradds (V, c->CGV, uvx);
+}
+
+
+/*
+ ------------------------------------------------------------------------------
+ CS converters
+ ------------------------------------------------------------------------------
+*/
+
+
+#define DEFCSP420_CVT(name,out_pixels) \
+static int altivec_##name (SwsContext *c, \
+ unsigned char **in, int *instrides, \
+ int srcSliceY, int srcSliceH, \
+ unsigned char **oplanes, int *outstrides) \
+{ \
+ int w = c->srcW; \
+ int h = srcSliceH; \
+ int i,j; \
+ int instrides_scl[3]; \
+ vector unsigned char y0,y1; \
+ \
+ vector signed char u,v; \
+ \
+ vector signed short Y0,Y1,Y2,Y3; \
+ vector signed short U,V; \
+ vector signed short vx,ux,uvx; \
+ vector signed short vx0,ux0,uvx0; \
+ vector signed short vx1,ux1,uvx1; \
+ vector signed short R0,G0,B0; \
+ vector signed short R1,G1,B1; \
+ vector unsigned char R,G,B; \
+ \
+ vector unsigned char *uivP, *vivP; \
+ vector unsigned char align_perm; \
+ \
+ vector signed short \
+ lCY = c->CY, \
+ lOY = c->OY, \
+ lCRV = c->CRV, \
+ lCBU = c->CBU, \
+ lCGU = c->CGU, \
+ lCGV = c->CGV; \
+ \
+ vector unsigned short lCSHIFT = c->CSHIFT; \
+ \
+ ubyte *y1i = in[0]; \
+ ubyte *y2i = in[0]+w; \
+ ubyte *ui = in[1]; \
+ ubyte *vi = in[2]; \
+ \
+ vector unsigned char *oute \
+ = (vector unsigned char *) \
+ (oplanes[0]+srcSliceY*outstrides[0]); \
+ vector unsigned char *outo \
+ = (vector unsigned char *) \
+ (oplanes[0]+srcSliceY*outstrides[0]+outstrides[0]); \
+ \
+ \
+ instrides_scl[0] = instrides[0]; \
+ instrides_scl[1] = instrides[1]-w/2; /* the loop moves ui by w/2 */ \
+ instrides_scl[2] = instrides[2]-w/2; /* the loop moves vi by w/2 */ \
+ \
+ \
+ for (i=0;i<h/2;i++) { \
+ vec_dstst (outo, (0x02000002|(((w*3+32)/32)<<16)), 0); \
+ vec_dstst (oute, (0x02000002|(((w*3+32)/32)<<16)), 1); \
+ \
+ for (j=0;j<w/16;j++) { \
+ \
+ y0 = vec_ldl (0,y1i); \
+ y1 = vec_ldl (0,y2i); \
+ uivP = (vector unsigned char *)ui; \
+ vivP = (vector unsigned char *)vi; \
+ \
+ align_perm = vec_lvsl (0, ui); \
+ u = (vector signed char)vec_perm (uivP[0], uivP[1], align_perm); \
+ \
+ align_perm = vec_lvsl (0, vi); \
+ v = (vector signed char)vec_perm (vivP[0], vivP[1], align_perm); \
+ \
+ u = (vector signed char)vec_sub (u, (vector signed char)(128)); \
+ v = (vector signed char)vec_sub (v, (vector signed char)(128)); \
+ U = vec_unpackh (u); \
+ V = vec_unpackh (v); \
+ \
+ \
+ Y0 = vec_unh (y0); \
+ Y1 = vec_unl (y0); \
+ Y2 = vec_unh (y1); \
+ Y3 = vec_unl (y1); \
+ \
+ Y0 = vec_mradds (Y0, lCY, lOY); \
+ Y1 = vec_mradds (Y1, lCY, lOY); \
+ Y2 = vec_mradds (Y2, lCY, lOY); \
+ Y3 = vec_mradds (Y3, lCY, lOY); \
+ \
+ /* ux = (CBU*(u<<CSHIFT)+0x4000)>>15 */ \
+ ux = vec_sl (U, lCSHIFT); \
+ ux = vec_mradds (ux, lCBU, (vector signed short)(0)); \
+ ux0 = vec_mergeh (ux,ux); \
+ ux1 = vec_mergel (ux,ux); \
+ \
+ /* vx = (CRV*(v<<CSHIFT)+0x4000)>>15; */ \
+ vx = vec_sl (V, lCSHIFT); \
+ vx = vec_mradds (vx, lCRV, (vector signed short)(0)); \
+ vx0 = vec_mergeh (vx,vx); \
+ vx1 = vec_mergel (vx,vx); \
+ \
+ /* uvx = ((CGU*u) + (CGV*v))>>15 */ \
+ uvx = vec_mradds (U, lCGU, (vector signed short)(0)); \
+ uvx = vec_mradds (V, lCGV, uvx); \
+ uvx0 = vec_mergeh (uvx,uvx); \
+ uvx1 = vec_mergel (uvx,uvx); \
+ \
+ R0 = vec_add (Y0,vx0); \
+ G0 = vec_add (Y0,uvx0); \
+ B0 = vec_add (Y0,ux0); \
+ R1 = vec_add (Y1,vx1); \
+ G1 = vec_add (Y1,uvx1); \
+ B1 = vec_add (Y1,ux1); \
+ \
+ R = vec_packclp (R0,R1); \
+ G = vec_packclp (G0,G1); \
+ B = vec_packclp (B0,B1); \
+ \
+ out_pixels(R,G,B,oute); \
+ \
+ R0 = vec_add (Y2,vx0); \
+ G0 = vec_add (Y2,uvx0); \
+ B0 = vec_add (Y2,ux0); \
+ R1 = vec_add (Y3,vx1); \
+ G1 = vec_add (Y3,uvx1); \
+ B1 = vec_add (Y3,ux1); \
+ R = vec_packclp (R0,R1); \
+ G = vec_packclp (G0,G1); \
+ B = vec_packclp (B0,B1); \
+ \
+ \
+ out_pixels(R,G,B,outo); \
+ \
+ y1i += 16; \
+ y2i += 16; \
+ ui += 8; \
+ vi += 8; \
+ \
+ } \
+ \
+ outo += (outstrides[0])>>4; \
+ oute += (outstrides[0])>>4; \
+ \
+ ui += instrides_scl[1]; \
+ vi += instrides_scl[2]; \
+ y1i += instrides_scl[0]; \
+ y2i += instrides_scl[0]; \
+ } \
+ return srcSliceH; \
+}
+
+
+#define out_abgr(a,b,c,ptr) vec_mstrgb32(typeof(a),((typeof (a))(0)),c,b,a,ptr)
+#define out_bgra(a,b,c,ptr) vec_mstrgb32(typeof(a),c,b,a,((typeof (a))(0)),ptr)
+#define out_rgba(a,b,c,ptr) vec_mstrgb32(typeof(a),a,b,c,((typeof (a))(0)),ptr)
+#define out_argb(a,b,c,ptr) vec_mstrgb32(typeof(a),((typeof (a))(0)),a,b,c,ptr)
+#define out_rgb24(a,b,c,ptr) vec_mstrgb24(a,b,c,ptr)
+#define out_bgr24(a,b,c,ptr) vec_mstrgb24(c,b,a,ptr)
+
+DEFCSP420_CVT (yuv2_abgr32, out_abgr)
+DEFCSP420_CVT (yuv2_bgra32, out_argb)
+DEFCSP420_CVT (yuv2_rgba32, out_rgba)
+DEFCSP420_CVT (yuv2_argb32, out_argb)
+DEFCSP420_CVT (yuv2_rgb24, out_rgb24)
+DEFCSP420_CVT (yuv2_bgr24, out_bgr24)
+
+
+// uyvy|uyvy|uyvy|uyvy
+// 0123 4567 89ab cdef
+static
+const vector unsigned char
+ demux_u = (vector unsigned char)(0x10,0x00,0x10,0x00,
+ 0x10,0x04,0x10,0x04,
+ 0x10,0x08,0x10,0x08,
+ 0x10,0x0c,0x10,0x0c),
+ demux_v = (vector unsigned char)(0x10,0x02,0x10,0x02,
+ 0x10,0x06,0x10,0x06,
+ 0x10,0x0A,0x10,0x0A,
+ 0x10,0x0E,0x10,0x0E),
+ demux_y = (vector unsigned char)(0x10,0x01,0x10,0x03,
+ 0x10,0x05,0x10,0x07,
+ 0x10,0x09,0x10,0x0B,
+ 0x10,0x0D,0x10,0x0F);
+
+/*
+ this is so I can play live CCIR raw video
+*/
+static int altivec_uyvy_rgb32 (SwsContext *c,
+ unsigned char **in, int *instrides,
+ int srcSliceY, int srcSliceH,
+ unsigned char **oplanes, int *outstrides)
+{
+ int w = c->srcW;
+ int h = srcSliceH;
+ int i,j;
+ vector unsigned char uyvy;
+ vector signed short Y,U,V;
+ vector signed short vx,ux,uvx;
+ vector signed short R0,G0,B0,R1,G1,B1;
+ vector unsigned char R,G,B;
+ vector unsigned char *out;
+ ubyte *img;
+
+ img = in[0];
+ out = (vector unsigned char *)(oplanes[0]+srcSliceY*outstrides[0]);
+
+ for (i=0;i<h;i++) {
+ for (j=0;j<w/16;j++) {
+ uyvy = vec_ld (0, img);
+ U = (vector signed short)
+ vec_perm (uyvy, (vector unsigned char)(0), demux_u);
+
+ V = (vector signed short)
+ vec_perm (uyvy, (vector unsigned char)(0), demux_v);
+
+ Y = (vector signed short)
+ vec_perm (uyvy, (vector unsigned char)(0), demux_y);
+
+ cvtyuvtoRGB (c, Y,U,V,&R0,&G0,&B0);
+
+ uyvy = vec_ld (16, img);
+ U = (vector signed short)
+ vec_perm (uyvy, (vector unsigned char)(0), demux_u);
+
+ V = (vector signed short)
+ vec_perm (uyvy, (vector unsigned char)(0), demux_v);
+
+ Y = (vector signed short)
+ vec_perm (uyvy, (vector unsigned char)(0), demux_y);
+
+ cvtyuvtoRGB (c, Y,U,V,&R1,&G1,&B1);
+
+ R = vec_packclp (R0,R1);
+ G = vec_packclp (G0,G1);
+ B = vec_packclp (B0,B1);
+
+ // vec_mstbgr24 (R,G,B, out);
+ out_rgba (R,G,B,out);
+
+ img += 32;
+ }
+ }
+}
+
+
+
+/* Ok currently the acceleration routine only supports
+ inputs of widths a multiple of 16
+ and heights a multiple 2
+
+ So we just fall back to the C codes for this.
+*/
+SwsFunc yuv2rgb_init_altivec (SwsContext *c)
+{
+ if (!(c->flags & SWS_CPU_CAPS_ALTIVEC))
+ return NULL;
+
+ /*
+ and this seems not to matter too much I tried a bunch of
+ videos with abnormal widths and mplayer crashes else where.
+ mplayer -vo x11 -rawvideo on:w=350:h=240 raw-350x240.eyuv
+ boom with X11 bad match.
+
+ */
+ if ((c->srcW & 0xf) != 0) return NULL;
+
+ switch (c->srcFormat) {
+ case IMGFMT_YVU9:
+ case IMGFMT_IF09:
+ case IMGFMT_YV12:
+ case IMGFMT_I420:
+ case IMGFMT_IYUV:
+ case IMGFMT_CLPL:
+ case IMGFMT_Y800:
+ case IMGFMT_Y8:
+ case IMGFMT_NV12:
+ case IMGFMT_NV21:
+ if ((c->srcH & 0x1) != 0)
+ return NULL;
+
+ switch(c->dstFormat){
+ case IMGFMT_RGB24:
+ MSG_WARN("ALTIVEC: Color Space RGB24\n");
+ return altivec_yuv2_rgb24;
+ case IMGFMT_BGR24:
+ MSG_WARN("ALTIVEC: Color Space BGR24\n");
+ return altivec_yuv2_bgr24;
+ case IMGFMT_RGB32:
+ MSG_WARN("ALTIVEC: Color Space ARGB32\n");
+ return altivec_yuv2_argb32;
+ case IMGFMT_BGR32:
+ MSG_WARN("ALTIVEC: Color Space BGRA32\n");
+ // return profile_altivec_bgra32;
+
+ return altivec_yuv2_bgra32;
+ default: return NULL;
+ }
+ break;
+
+ case IMGFMT_UYVY:
+ switch(c->dstFormat){
+ case IMGFMT_RGB32:
+ MSG_WARN("ALTIVEC: Color Space UYVY -> RGB32\n");
+ return altivec_uyvy_rgb32;
+ case IMGFMT_RGB24:
+ case IMGFMT_BGR32:
+
+ default: return NULL;
+ }
+ break;
+
+ }
+ return NULL;
+}
+
+
+int yuv2rgb_altivec_init_tables (SwsContext *c, const int inv_table[4])
+{
+
+ vector signed short
+ CY = (vector signed short)(0x7fff),
+ CRV = (vector signed short)(22972),
+ CBU = (vector signed short)(29029),
+ CGU = (vector signed short)(-11276),
+ CGV = (vector signed short)(-23400),
+ OY;
+
+ vector unsigned short CSHIFT = (vector unsigned short)(1);
+
+ vector signed short Y0;
+ int brightness = c->brightness, contrast = c->contrast, saturation = c->saturation;
+ int64_t crv __attribute__ ((aligned(16)));
+ int64_t cbu __attribute__ ((aligned(16)));
+ int64_t cgu __attribute__ ((aligned(16)));
+ int64_t cgv __attribute__ ((aligned(16)));
+ short tmp __attribute__ ((aligned(16)));
+
+ int64_t cy = (1<<16)-1;
+ int64_t oy = 0;
+
+ if ((c->flags & SWS_CPU_CAPS_ALTIVEC) == 0)
+ return;
+
+ crv = inv_table[0];
+ cbu = inv_table[1];
+ cgu = inv_table[2];
+ cgv = inv_table[3];
+
+#if 0
+ printf ("crv: %hvx\n", CRV);
+ printf ("cbu: %hvx\n", CBU);
+ printf ("cgv: %hvx\n", CGV);
+ printf ("cgu: %hvx\n", CGU);
+
+ printf ("contrast: %d, brightness: %d, saturation: %d\n", contrast, brightness, saturation);
+
+ printf("%lld %lld %lld %lld %lld\n", cy, crv, cbu, cgu, cgv);
+#endif
+
+ cy = (cy *contrast )>>17;
+ crv= (crv*contrast * saturation)>>32;
+ cbu= (cbu*contrast * saturation)>>32;
+ cgu= (cgu*contrast * saturation)>>32;
+ cgv= (cgv*contrast * saturation)>>32;
+
+ oy -= 256*brightness;
+
+
+ //printf("%llx %llx %llx %llx %llx\n", cy, crv, cbu, cgu, cgv);
+
+ // vector signed short CBU,CRV,CGU,CGY,CY;
+ tmp = cy;
+ CY = vec_lde (0, &tmp);
+ CY = vec_splat (CY, 0);
+
+ tmp = oy;
+ OY = vec_lde (0, &tmp);
+ OY = vec_splat (OY, 0);
+
+ tmp = crv>>3;
+ CRV = vec_lde (0, &tmp);
+ CRV = vec_splat (CRV, 0);
+ tmp = cbu>>3;
+ CBU = vec_lde (0, &tmp);
+ CBU = vec_splat (CBU, 0);
+
+ tmp = -(cgu>>1);
+ CGU = vec_lde (0, &tmp);
+ CGU = vec_splat (CGU, 0);
+ tmp = -(cgv>>1);
+ CGV = vec_lde (0, &tmp);
+ CGV = vec_splat (CGV, 0);
+
+ CSHIFT = (vector unsigned short)(2);
+#if 1
+ c->CSHIFT = CSHIFT;
+ c->CY = CY;
+ c->OY = OY;
+ c->CRV = CRV;
+ c->CBU = CBU;
+ c->CGU = CGU;
+ c->CGV = CGV;
+#endif
+#if 1
+ printf ("cy: %hvx\n", CY);
+ printf ("oy: %hvx\n", OY);
+ printf ("crv: %hvx\n", CRV);
+ printf ("cbu: %hvx\n", CBU);
+ printf ("cgv: %hvx\n", CGV);
+ printf ("cgu: %hvx\n", CGU);
+#endif
+}
+
+
+void
+altivec_yuv2packedX (SwsContext *c,
+ int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
+ int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
+ uint8_t *dest, int dstW, int dstY)
+{
+ int i,j;
+ short tmp __attribute__((aligned (16)));
+ short *p;
+ short *f;
+ vector signed short X,X0,X1,Y0,U0,V0,Y1,U1,V1,U,V;
+ vector signed short R0,G0,B0,R1,G1,B1;
+
+ vector unsigned char R,G,B,pels[3];
+ vector unsigned char *out,*nout;
+ vector signed short RND = (vector signed short)(1<<3);
+ vector unsigned short SCL = (vector unsigned short)(4);
+ unsigned long scratch[16] __attribute__ ((aligned (16)));
+
+ vector signed short *vYCoeffsBank, *vCCoeffsBank;
+
+ vector signed short *YCoeffs, *CCoeffs;
+
+ vYCoeffsBank = malloc (sizeof (vector signed short)*lumFilterSize*dstW);
+ vCCoeffsBank = malloc (sizeof (vector signed short)*chrFilterSize*dstW);
+
+ for (i=0;i<lumFilterSize*dstW;i++) {
+ tmp = c->vLumFilter[i];
+ p = &vYCoeffsBank[i];
+ for (j=0;j<8;j++)
+ p[j] = tmp;
+ }
+
+ for (i=0;i<chrFilterSize*dstW;i++) {
+ tmp = c->vChrFilter[i];
+ p = &vCCoeffsBank[i];
+ for (j=0;j<8;j++)
+ p[j] = tmp;
+ }
+
+ YCoeffs = vYCoeffsBank+dstY*lumFilterSize;
+ CCoeffs = vCCoeffsBank+dstY*chrFilterSize;
+
+ out = (vector unsigned char *)dest;
+
+ for(i=0; i<dstW; i+=16){
+ Y0 = RND;
+ Y1 = RND;
+ /* extract 16 coeffs from lumSrc */
+ for(j=0; j<lumFilterSize; j++) {
+ X0 = vec_ld (0, &lumSrc[j][i]);
+ X1 = vec_ld (16, &lumSrc[j][i]);
+ Y0 = vec_mradds (X0, YCoeffs[j], Y0);
+ Y1 = vec_mradds (X1, YCoeffs[j], Y1);
+ }
+
+ U = RND;
+ V = RND;
+ /* extract 8 coeffs from U,V */
+ for(j=0; j<chrFilterSize; j++) {
+ X = vec_ld (0, &chrSrc[j][i/2]);
+ U = vec_mradds (X, CCoeffs[j], U);
+ X = vec_ld (0, &chrSrc[j][i/2+2048]);
+ V = vec_mradds (X, CCoeffs[j], V);
+ }
+
+ /* scale and clip signals */
+ Y0 = vec_sra (Y0, SCL);
+ Y1 = vec_sra (Y1, SCL);
+ U = vec_sra (U, SCL);
+ V = vec_sra (V, SCL);
+
+ Y0 = vec_clip (Y0);
+ Y1 = vec_clip (Y1);
+ U = vec_clip (U);
+ V = vec_clip (V);
+
+ /* now we have
+ Y0= y0 y1 y2 y3 y4 y5 y6 y7 Y1= y8 y9 y10 y11 y12 y13 y14 y15
+ U= u0 u1 u2 u3 u4 u5 u6 u7 V= v0 v1 v2 v3 v4 v5 v6 v7
+
+ Y0= y0 y1 y2 y3 y4 y5 y6 y7 Y1= y8 y9 y10 y11 y12 y13 y14 y15
+ U0= u0 u0 u1 u1 u2 u2 u3 u3 U1= u4 u4 u5 u5 u6 u6 u7 u7
+ V0= v0 v0 v1 v1 v2 v2 v3 v3 V1= v4 v4 v5 v5 v6 v6 v7 v7
+ */
+
+ U0 = vec_mergeh (U,U);
+ V0 = vec_mergeh (V,V);
+
+ U1 = vec_mergel (U,U);
+ V1 = vec_mergel (V,V);
+
+ cvtyuvtoRGB (c, Y0,U0,V0,&R0,&G0,&B0);
+ cvtyuvtoRGB (c, Y1,U1,V1,&R1,&G1,&B1);
+
+ R = vec_packclp (R0,R1);
+ G = vec_packclp (G0,G1);
+ B = vec_packclp (B0,B1);
+
+ out_rgba (R,G,B,out);
+ }
+
+ if (i < dstW) {
+ i -= 16;
+
+ Y0 = RND;
+ Y1 = RND;
+ /* extract 16 coeffs from lumSrc */
+ for(j=0; j<lumFilterSize; j++) {
+ X0 = vec_ld (0, &lumSrc[j][i]);
+ X1 = vec_ld (16, &lumSrc[j][i]);
+ Y0 = vec_mradds (X0, YCoeffs[j], Y0);
+ Y1 = vec_mradds (X1, YCoeffs[j], Y1);
+ }
+
+ U = RND;
+ V = RND;
+ /* extract 8 coeffs from U,V */
+ for(j=0; j<chrFilterSize; j++) {
+ X = vec_ld (0, &chrSrc[j][i/2]);
+ U = vec_mradds (X, CCoeffs[j], U);
+ X = vec_ld (0, &chrSrc[j][i/2+2048]);
+ V = vec_mradds (X, CCoeffs[j], V);
+ }
+
+ /* scale and clip signals */
+ Y0 = vec_sra (Y0, SCL);
+ Y1 = vec_sra (Y1, SCL);
+ U = vec_sra (U, SCL);
+ V = vec_sra (V, SCL);
+
+ Y0 = vec_clip (Y0);
+ Y1 = vec_clip (Y1);
+ U = vec_clip (U);
+ V = vec_clip (V);
+
+ /* now we have
+ Y0= y0 y1 y2 y3 y4 y5 y6 y7 Y1= y8 y9 y10 y11 y12 y13 y14 y15
+ U= u0 u1 u2 u3 u4 u5 u6 u7 V= v0 v1 v2 v3 v4 v5 v6 v7
+
+ Y0= y0 y1 y2 y3 y4 y5 y6 y7 Y1= y8 y9 y10 y11 y12 y13 y14 y15
+ U0= u0 u0 u1 u1 u2 u2 u3 u3 U1= u4 u4 u5 u5 u6 u6 u7 u7
+ V0= v0 v0 v1 v1 v2 v2 v3 v3 V1= v4 v4 v5 v5 v6 v6 v7 v7
+ */
+
+ U0 = vec_mergeh (U,U);
+ V0 = vec_mergeh (V,V);
+
+ U1 = vec_mergel (U,U);
+ V1 = vec_mergel (V,V);
+
+ cvtyuvtoRGB (c, Y0,U0,V0,&R0,&G0,&B0);
+ cvtyuvtoRGB (c, Y1,U1,V1,&R1,&G1,&B1);
+
+ R = vec_packclp (R0,R1);
+ G = vec_packclp (G0,G1);
+ B = vec_packclp (B0,B1);
+
+ nout = (vector unsigned char *)scratch;
+ out_rgba (R,G,B,nout);
+
+ memcpy (&((uint32_t*)dest)[i], scratch, (dstW-i)/4);
+ }
+
+ if (vYCoeffsBank) free (vYCoeffsBank);
+ if (vCCoeffsBank) free (vCCoeffsBank);
+
+}
+
+
--
Libav/FFmpeg packaging
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