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FFmpeg/libswscale/yuv2rgb_altivec.c

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/*
marc.hoffman@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 <string.h>
#include <inttypes.h>
#include <assert.h>
#include "config.h"
#ifdef HAVE_MALLOC_H
#include <malloc.h>
#endif
#include "rgb2rgb.h"
#include "swscale.h"
#include "swscale_internal.h"
#include "libmpcodecs/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 = (const vector unsigned char)AVV(0x00,0x01,0x10,0x02,0x03,0x11,0x04,0x05,
0x12,0x06,0x07,0x13,0x08,0x09,0x14,0x0a),
perm_rgb_1 = (const vector unsigned char)AVV(0x0b,0x15,0x0c,0x0d,0x16,0x0e,0x0f,0x17,
0x18,0x19,0x1a,0x1b,0x1c,0x1d,0x1e,0x1f),
perm_rgb_2 = (const vector unsigned char)AVV(0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17,
0x00,0x01,0x18,0x02,0x03,0x19,0x04,0x05),
perm_rgb_3 = (const vector unsigned char)AVV(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_mstbgr24(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_mstrgb24(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))AVV(0),\
(vector unsigned char)AVV(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))AVV(0),\
(vector unsigned char)AVV(0x10,0x08,0x10,0x09,0x10,0x0A,0x10,0x0B,\
0x10,0x0C,0x10,0x0D,0x10,0x0E,0x10,0x0F))
#define vec_clip_s16(x) \
vec_max (vec_min (x, (vector signed short)AVV(235,235,235,235,235,235,235,235)),\
(vector signed short)AVV(16, 16, 16, 16, 16, 16, 16, 16 ))
#define vec_packclp(x,y) \
(vector unsigned char)vec_packs \
((vector unsigned short)vec_max (x,(vector signed short) AVV(0)), \
(vector unsigned short)vec_max (y,(vector signed short) AVV(0)))
//#define out_pixels(a,b,c,ptr) vec_mstrgb32(typeof(a),((typeof (a))AVV(0)),a,a,a,ptr)
static inline void 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)
vec_splat((vector signed short)AVV(128),0));
V = vec_sub (V,(vector signed short)
vec_splat((vector signed short)AVV(128),0));
// 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 *y1ivP, *y2ivP, *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]+instrides[0]; \
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]*2-w; /* the loop moves y{1,2}i by w */ \
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++) { \
\
y1ivP = (vector unsigned char *)y1i; \
y2ivP = (vector unsigned char *)y2i; \
uivP = (vector unsigned char *)ui; \
vivP = (vector unsigned char *)vi; \
\
align_perm = vec_lvsl (0, y1i); \
y0 = (vector unsigned char)vec_perm (y1ivP[0], y1ivP[1], align_perm);\
\
align_perm = vec_lvsl (0, y2i); \
y1 = (vector unsigned char)vec_perm (y2ivP[0], y2ivP[1], align_perm);\
\
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) \
vec_splat((vector signed char)AVV(128),0));\
v = (vector signed char) \
vec_sub (v,(vector signed char) \
vec_splat((vector signed char)AVV(128),0));\
\
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)AVV(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)AVV(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)AVV(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))AVV(0)),c,b,a,ptr)
#define out_bgra(a,b,c,ptr) vec_mstrgb32(typeof(a),c,b,a,((typeof (a))AVV(0)),ptr)
#define out_rgba(a,b,c,ptr) vec_mstrgb32(typeof(a),a,b,c,((typeof (a))AVV(0)),ptr)
#define out_argb(a,b,c,ptr) vec_mstrgb32(typeof(a),((typeof (a))AVV(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_mstbgr24(a,b,c,ptr)
DEFCSP420_CVT (yuv2_abgr, out_abgr)
#if 1
DEFCSP420_CVT (yuv2_bgra, out_bgra)
#else
static int altivec_yuv2_bgra32 (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)
vec_splat((vector signed char)AVV(128),0));
v = (vector signed char)
vec_sub (v, (vector signed char)
vec_splat((vector signed char)AVV(128),0));
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)AVV(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)AVV(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)AVV(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_argb(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_argb(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;
}
#endif
DEFCSP420_CVT (yuv2_rgba, out_rgba)
DEFCSP420_CVT (yuv2_argb, 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 = (const vector unsigned char)AVV(0x10,0x00,0x10,0x00,
0x10,0x04,0x10,0x04,
0x10,0x08,0x10,0x08,
0x10,0x0c,0x10,0x0c),
demux_v = (const vector unsigned char)AVV(0x10,0x02,0x10,0x02,
0x10,0x06,0x10,0x06,
0x10,0x0A,0x10,0x0A,
0x10,0x0E,0x10,0x0E),
demux_y = (const vector unsigned char)AVV(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)AVV(0), demux_u);
V = (vector signed short)
vec_perm (uyvy, (vector unsigned char)AVV(0), demux_v);
Y = (vector signed short)
vec_perm (uyvy, (vector unsigned char)AVV(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)AVV(0), demux_u);
V = (vector signed short)
vec_perm (uyvy, (vector unsigned char)AVV(0), demux_v);
Y = (vector signed short)
vec_perm (uyvy, (vector unsigned char)AVV(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;
}
}
return srcSliceH;
}
/* 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_ARGB:
MSG_WARN("ALTIVEC: Color Space ARGB\n");
return altivec_yuv2_argb;
case IMGFMT_ABGR:
MSG_WARN("ALTIVEC: Color Space ABGR\n");
return altivec_yuv2_abgr;
case IMGFMT_RGBA:
MSG_WARN("ALTIVEC: Color Space RGBA\n");
return altivec_yuv2_rgba;
case IMGFMT_BGRA:
MSG_WARN("ALTIVEC: Color Space BGRA\n");
return altivec_yuv2_bgra;
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;
default: return NULL;
}
break;
}
return NULL;
}
static uint16_t roundToInt16(int64_t f){
int r= (f + (1<<15))>>16;
if(r<-0x7FFF) return 0x8000;
else if(r> 0x7FFF) return 0x7FFF;
else return r;
}
void yuv2rgb_altivec_init_tables (SwsContext *c, const int inv_table[4],int brightness,int contrast, int saturation)
{
union {
signed short tmp[8] __attribute__ ((aligned(16)));
vector signed short vec;
} buf;
buf.tmp[0] = ( (0xffffLL) * contrast>>8 )>>9; //cy
buf.tmp[1] = -256*brightness; //oy
buf.tmp[2] = (inv_table[0]>>3) *(contrast>>16)*(saturation>>16); //crv
buf.tmp[3] = (inv_table[1]>>3) *(contrast>>16)*(saturation>>16); //cbu
buf.tmp[4] = -((inv_table[2]>>1)*(contrast>>16)*(saturation>>16)); //cgu
buf.tmp[5] = -((inv_table[3]>>1)*(contrast>>16)*(saturation>>16)); //cgv
c->CSHIFT = (vector unsigned short)vec_splat_u16(2);
c->CY = vec_splat ((vector signed short)buf.vec, 0);
c->OY = vec_splat ((vector signed short)buf.vec, 1);
c->CRV = vec_splat ((vector signed short)buf.vec, 2);
c->CBU = vec_splat ((vector signed short)buf.vec, 3);
c->CGU = vec_splat ((vector signed short)buf.vec, 4);
c->CGV = vec_splat ((vector signed short)buf.vec, 5);
#if 0
{
int i;
char *v[6]={"cy","oy","crv","cbu","cgu","cgv"};
for (i=0; i<6;i++)
printf("%s %d ", v[i],buf.tmp[i] );
printf("\n");
}
#endif
return;
}
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 *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 = vec_splat_s16(1<<3);
vector unsigned short SCL = vec_splat_u16(4);
unsigned long scratch[16] __attribute__ ((aligned (16)));
vector signed short *YCoeffs, *CCoeffs;
YCoeffs = c->vYCoeffsBank+dstY*lumFilterSize;
CCoeffs = c->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_s16 (Y0);
Y1 = vec_clip_s16 (Y1);
U = vec_clip_s16 (U);
V = vec_clip_s16 (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);
switch(c->dstFormat) {
case IMGFMT_ABGR: out_abgr (R,G,B,out); break;
case IMGFMT_BGRA: out_bgra (R,G,B,out); break;
case IMGFMT_RGBA: out_rgba (R,G,B,out); break;
case IMGFMT_ARGB: out_argb (R,G,B,out); break;
case IMGFMT_RGB24: out_rgb24 (R,G,B,out); break;
case IMGFMT_BGR24: out_bgr24 (R,G,B,out); break;
default:
{
/* If this is reached, the caller should have called yuv2packedXinC
instead. */
static int printed_error_message;
if(!printed_error_message) {
MSG_ERR("altivec_yuv2packedX doesn't support %s output\n",
sws_format_name(c->dstFormat));
printed_error_message=1;
}
return;
}
}
}
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_s16 (Y0);
Y1 = vec_clip_s16 (Y1);
U = vec_clip_s16 (U);
V = vec_clip_s16 (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;
switch(c->dstFormat) {
case IMGFMT_ABGR: out_abgr (R,G,B,nout); break;
case IMGFMT_BGRA: out_bgra (R,G,B,nout); break;
case IMGFMT_RGBA: out_rgba (R,G,B,nout); break;
case IMGFMT_ARGB: out_argb (R,G,B,nout); break;
case IMGFMT_RGB24: out_rgb24 (R,G,B,nout); break;
case IMGFMT_BGR24: out_bgr24 (R,G,B,nout); break;
default:
/* Unreachable, I think. */
MSG_ERR("altivec_yuv2packedX doesn't support %s output\n",
sws_format_name(c->dstFormat));
return;
}
memcpy (&((uint32_t*)dest)[i], scratch, (dstW-i)/4);
}
}