WebSVN – Kolibri OS – Blame – /contrib/sdk/sources/ffmpeg/libswscale/ppc/yuv2rgb

Rev	Author	Line No.	Line
4349	Serge	1	/*
		2	* AltiVec acceleration for colorspace conversion
		3	*
		4	* copyright (C) 2004 Marc Hoffman
		5	*
		6	* This file is part of FFmpeg.
		7	*
		8	* FFmpeg is free software; you can redistribute it and/or
		9	* modify it under the terms of the GNU Lesser General Public
		10	* License as published by the Free Software Foundation; either
		11	* version 2.1 of the License, or (at your option) any later version.
		12	*
		13	* FFmpeg is distributed in the hope that it will be useful,
		14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
		15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
		16	* Lesser General Public License for more details.
		17	*
		18	* You should have received a copy of the GNU Lesser General Public
		19	* License along with FFmpeg; if not, write to the Free Software
		20	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
		21	*/
		22
		23	/*
		24	* Convert I420 YV12 to RGB in various formats,
		25	* it rejects images that are not in 420 formats,
		26	* it rejects images that don't have widths of multiples of 16,
		27	* it rejects images that don't have heights of multiples of 2.
		28	* Reject defers to C simulation code.
		29	*
		30	* Lots of optimizations to be done here.
		31	*
		32	* 1. Need to fix saturation code. I just couldn't get it to fly with packs
		33	* and adds, so we currently use max/min to clip.
		34	*
		35	* 2. The inefficient use of chroma loading needs a bit of brushing up.
		36	*
		37	* 3. Analysis of pipeline stalls needs to be done. Use shark to identify
		38	* pipeline stalls.
		39	*
		40	*
		41	* MODIFIED to calculate coeffs from currently selected color space.
		42	* MODIFIED core to be a macro where you specify the output format.
		43	* ADDED UYVY conversion which is never called due to some thing in swscale.
		44	* CORRECTED algorithim selection to be strict on input formats.
		45	* ADDED runtime detection of AltiVec.
		46	*
		47	* ADDED altivec_yuv2packedX vertical scl + RGB converter
		48	*
		49	* March 27,2004
		50	* PERFORMANCE ANALYSIS
		51	*
		52	* The C version uses 25% of the processor or ~250Mips for D1 video rawvideo
		53	* used as test.
		54	* The AltiVec version uses 10% of the processor or ~100Mips for D1 video
		55	* same sequence.
		56	*
		57	* 720 * 480 * 30 ~10MPS
		58	*
		59	* so we have roughly 10 clocks per pixel. This is too high, something has
		60	* to be wrong.
		61	*
		62	* OPTIMIZED clip codes to utilize vec_max and vec_packs removing the
		63	* need for vec_min.
		64	*
		65	* OPTIMIZED DST OUTPUT cache/DMA controls. We are pretty much guaranteed to
		66	* have the input video frame, it was just decompressed so it probably resides
		67	* in L1 caches. However, we are creating the output video stream. This needs
		68	* to use the DSTST instruction to optimize for the cache. We couple this with
		69	* the fact that we are not going to be visiting the input buffer again so we
		70	* mark it Least Recently Used. This shaves 25% of the processor cycles off.
		71	*
		72	* Now memcpy is the largest mips consumer in the system, probably due
		73	* to the inefficient X11 stuff.
		74	*
		75	* GL libraries seem to be very slow on this machine 1.33Ghz PB running
		76	* Jaguar, this is not the case for my 1Ghz PB. I thought it might be
		77	* a versioning issue, however I have libGL.1.2.dylib for both
		78	* machines. (We need to figure this out now.)
		79	*
		80	* GL2 libraries work now with patch for RGB32.
		81	*
		82	* NOTE: quartz vo driver ARGB32_to_RGB24 consumes 30% of the processor.
		83	*
		84	* Integrated luma prescaling adjustment for saturation/contrast/brightness
		85	* adjustment.
		86	*/
		87
		88	#include
		89	#include
		90	#include
		91	#include
		92	#include
		93
		94	#include "config.h"
		95	#include "libswscale/rgb2rgb.h"
		96	#include "libswscale/swscale.h"
		97	#include "libswscale/swscale_internal.h"
		98	#include "libavutil/attributes.h"
		99	#include "libavutil/cpu.h"
		100	#include "libavutil/pixdesc.h"
		101	#include "yuv2rgb_altivec.h"
		102
		103	#if HAVE_ALTIVEC
		104
		105	#undef PROFILE_THE_BEAST
		106	#undef INC_SCALING
		107
		108	typedef unsigned char ubyte;
		109	typedef signed char sbyte;
		110
		111	/* RGB interleaver, 16 planar pels 8-bit samples per channel in
		112	* homogeneous vector registers x0,x1,x2 are interleaved with the
		113	* following technique:
		114	*
		115	* o0 = vec_mergeh(x0, x1);
		116	* o1 = vec_perm(o0, x2, perm_rgb_0);
		117	* o2 = vec_perm(o0, x2, perm_rgb_1);
		118	* o3 = vec_mergel(x0, x1);
		119	* o4 = vec_perm(o3, o2, perm_rgb_2);
		120	* o5 = vec_perm(o3, o2, perm_rgb_3);
		121	*
		122	* perm_rgb_0: o0(RG).h v1(B) --> o1*
		123	* 0 1 2 3 4
		124	* rgbr\|gbrg\|brgb\|rgbr
		125	* 0010 0100 1001 0010
		126	* 0102 3145 2673 894A
		127	*
		128	* perm_rgb_1: o0(RG).h v1(B) --> o2
		129	* 0 1 2 3 4
		130	* gbrg\|brgb\|bbbb\|bbbb
		131	* 0100 1001 1111 1111
		132	* B5CD 6EF7 89AB CDEF
		133	*
		134	* perm_rgb_2: o3(RG).l o2(rgbB.l) --> o4*
		135	* 0 1 2 3 4
		136	* gbrg\|brgb\|rgbr\|gbrg
		137	* 1111 1111 0010 0100
		138	* 89AB CDEF 0182 3945
		139	*
		140	* perm_rgb_2: o3(RG).l o2(rgbB.l) ---> o5*
		141	* 0 1 2 3 4
		142	* brgb\|rgbr\|gbrg\|brgb
		143	* 1001 0010 0100 1001
		144	* a67b 89cA BdCD eEFf
		145	*
		146	*/
		147	static const vector unsigned char
		148	perm_rgb_0 = { 0x00, 0x01, 0x10, 0x02, 0x03, 0x11, 0x04, 0x05,
		149	0x12, 0x06, 0x07, 0x13, 0x08, 0x09, 0x14, 0x0a },
		150	perm_rgb_1 = { 0x0b, 0x15, 0x0c, 0x0d, 0x16, 0x0e, 0x0f, 0x17,
		151	0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f },
		152	perm_rgb_2 = { 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
		153	0x00, 0x01, 0x18, 0x02, 0x03, 0x19, 0x04, 0x05 },
		154	perm_rgb_3 = { 0x1a, 0x06, 0x07, 0x1b, 0x08, 0x09, 0x1c, 0x0a,
		155	0x0b, 0x1d, 0x0c, 0x0d, 0x1e, 0x0e, 0x0f, 0x1f };
		156
		157	#define vec_merge3(x2, x1, x0, y0, y1, y2) \
		158	do { \
		159	__typeof__(x0) o0, o2, o3; \
		160	o0 = vec_mergeh(x0, x1); \
		161	y0 = vec_perm(o0, x2, perm_rgb_0); \
		162	o2 = vec_perm(o0, x2, perm_rgb_1); \
		163	o3 = vec_mergel(x0, x1); \
		164	y1 = vec_perm(o3, o2, perm_rgb_2); \
		165	y2 = vec_perm(o3, o2, perm_rgb_3); \
		166	} while (0)
		167
		168	#define vec_mstbgr24(x0, x1, x2, ptr) \
		169	do { \
		170	__typeof__(x0) _0, _1, _2; \
		171	vec_merge3(x0, x1, x2, _0, _1, _2); \
		172	vec_st(_0, 0, ptr++); \
		173	vec_st(_1, 0, ptr++); \
		174	vec_st(_2, 0, ptr++); \
		175	} while (0)
		176
		177	#define vec_mstrgb24(x0, x1, x2, ptr) \
		178	do { \
		179	__typeof__(x0) _0, _1, _2; \
		180	vec_merge3(x2, x1, x0, _0, _1, _2); \
		181	vec_st(_0, 0, ptr++); \
		182	vec_st(_1, 0, ptr++); \
		183	vec_st(_2, 0, ptr++); \
		184	} while (0)
		185
		186	/* pack the pixels in rgb0 format
		187	* msb R
		188	* lsb 0
		189	*/
		190	#define vec_mstrgb32(T, x0, x1, x2, x3, ptr) \
		191	do { \
		192	T _0, _1, _2, _3; \
		193	_0 = vec_mergeh(x0, x1); \
		194	_1 = vec_mergeh(x2, x3); \
		195	_2 = (T) vec_mergeh((vector unsigned short) _0, \
		196	(vector unsigned short) _1); \
		197	_3 = (T) vec_mergel((vector unsigned short) _0, \
		198	(vector unsigned short) _1); \
		199	vec_st(_2, 0 * 16, (T *) ptr); \
		200	vec_st(_3, 1 * 16, (T *) ptr); \
		201	_0 = vec_mergel(x0, x1); \
		202	_1 = vec_mergel(x2, x3); \
		203	_2 = (T) vec_mergeh((vector unsigned short) _0, \
		204	(vector unsigned short) _1); \
		205	_3 = (T) vec_mergel((vector unsigned short) _0, \
		206	(vector unsigned short) _1); \
		207	vec_st(_2, 2 * 16, (T *) ptr); \
		208	vec_st(_3, 3 * 16, (T *) ptr); \
		209	ptr += 4; \
		210	} while (0)
		211
		212	/*
		213	* 1 0 1.4021 \| \| Y \|
		214	* 1 -0.3441 -0.7142 \|x\| Cb\|
		215	* 1 1.7718 0 \| \| Cr\|
		216	*
		217	*
		218	* Y: [-128 127]
		219	* Cb/Cr : [-128 127]
		220	*
		221	* typical YUV conversion works on Y: 0-255 this version has been
		222	* optimized for JPEG decoding.
		223	*/
		224
		225	#define vec_unh(x) \
		226	(vector signed short) \
		227	vec_perm(x, (__typeof__(x)) { 0 }, \
		228	((vector unsigned char) { \
		229	0x10, 0x00, 0x10, 0x01, 0x10, 0x02, 0x10, 0x03, \
		230	0x10, 0x04, 0x10, 0x05, 0x10, 0x06, 0x10, 0x07 }))
		231
		232	#define vec_unl(x) \
		233	(vector signed short) \
		234	vec_perm(x, (__typeof__(x)) { 0 }, \
		235	((vector unsigned char) { \
		236	0x10, 0x08, 0x10, 0x09, 0x10, 0x0A, 0x10, 0x0B, \
		237	0x10, 0x0C, 0x10, 0x0D, 0x10, 0x0E, 0x10, 0x0F }))
		238
		239	#define vec_clip_s16(x) \
		240	vec_max(vec_min(x, ((vector signed short) { \
		241	235, 235, 235, 235, 235, 235, 235, 235 })), \
		242	((vector signed short) { 16, 16, 16, 16, 16, 16, 16, 16 }))
		243
		244	#define vec_packclp(x, y) \
		245	(vector unsigned char) \
		246	vec_packs((vector unsigned short) \
		247	vec_max(x, ((vector signed short) { 0 })), \
		248	(vector unsigned short) \
		249	vec_max(y, ((vector signed short) { 0 })))
		250
		251	static inline void cvtyuvtoRGB(SwsContext *c, vector signed short Y,
		252	vector signed short U, vector signed short V,
		253	vector signed short R, vector signed short G,
		254	vector signed short *B)
		255	{
		256	vector signed short vx, ux, uvx;
		257
		258	Y = vec_mradds(Y, c->CY, c->OY);
		259	U = vec_sub(U, (vector signed short)
		260	vec_splat((vector signed short) { 128 }, 0));
		261	V = vec_sub(V, (vector signed short)
		262	vec_splat((vector signed short) { 128 }, 0));
		263
		264	// ux = (CBU * (u << c->CSHIFT) + 0x4000) >> 15;
		265	ux = vec_sl(U, c->CSHIFT);
		266	*B = vec_mradds(ux, c->CBU, Y);
		267
		268	// vx = (CRV * (v << c->CSHIFT) + 0x4000) >> 15;
		269	vx = vec_sl(V, c->CSHIFT);
		270	*R = vec_mradds(vx, c->CRV, Y);
		271
		272	// uvx = ((CGU * u) + (CGV * v)) >> 15;
		273	uvx = vec_mradds(U, c->CGU, Y);
		274	*G = vec_mradds(V, c->CGV, uvx);
		275	}
		276
		277	/*
		278	* ------------------------------------------------------------------------------
		279	* CS converters
		280	* ------------------------------------------------------------------------------
		281	*/
		282
		283	#define DEFCSP420_CVT(name, out_pixels) \
		284	static int altivec_ ## name(SwsContext c, const unsigned char *in, \
		285	int *instrides, int srcSliceY, int srcSliceH, \
		286	unsigned char *oplanes, int outstrides) \
		287	{ \
		288	int w = c->srcW; \
		289	int h = srcSliceH; \
		290	int i, j; \
		291	int instrides_scl[3]; \
		292	vector unsigned char y0, y1; \
		293	\
		294	vector signed char u, v; \
		295	\
		296	vector signed short Y0, Y1, Y2, Y3; \
		297	vector signed short U, V; \
		298	vector signed short vx, ux, uvx; \
		299	vector signed short vx0, ux0, uvx0; \
		300	vector signed short vx1, ux1, uvx1; \
		301	vector signed short R0, G0, B0; \
		302	vector signed short R1, G1, B1; \
		303	vector unsigned char R, G, B; \
		304	\
		305	const vector unsigned char y1ivP, y2ivP, uivP, vivP; \
		306	vector unsigned char align_perm; \
		307	\
		308	vector signed short lCY = c->CY; \
		309	vector signed short lOY = c->OY; \
		310	vector signed short lCRV = c->CRV; \
		311	vector signed short lCBU = c->CBU; \
		312	vector signed short lCGU = c->CGU; \
		313	vector signed short lCGV = c->CGV; \
		314	vector unsigned short lCSHIFT = c->CSHIFT; \
		315	\
		316	const ubyte *y1i = in[0]; \
		317	const ubyte *y2i = in[0] + instrides[0]; \
		318	const ubyte *ui = in[1]; \
		319	const ubyte *vi = in[2]; \
		320	\
		321	vector unsigned char oute, outo; \
		322	\
		323	/* loop moves y{1, 2}i by w */ \
		324	instrides_scl[0] = instrides[0] * 2 - w; \
		325	/* loop moves ui by w / 2 */ \
		326	instrides_scl[1] = instrides[1] - w / 2; \
		327	/* loop moves vi by w / 2 */ \
		328	instrides_scl[2] = instrides[2] - w / 2; \
		329	\
		330	for (i = 0; i < h / 2; i++) { \
		331	oute = (vector unsigned char )(oplanes[0] + outstrides[0] \
		332	(srcSliceY + i * 2)); \
		333	outo = oute + (outstrides[0] >> 4); \
		334	vec_dstst(outo, (0x02000002 \| (((w * 3 + 32) / 32) << 16)), 0); \
		335	vec_dstst(oute, (0x02000002 \| (((w * 3 + 32) / 32) << 16)), 1); \
		336	\
		337	for (j = 0; j < w / 16; j++) { \
		338	y1ivP = (const vector unsigned char *) y1i; \
		339	y2ivP = (const vector unsigned char *) y2i; \
		340	uivP = (const vector unsigned char *) ui; \
		341	vivP = (const vector unsigned char *) vi; \
		342	\
		343	align_perm = vec_lvsl(0, y1i); \
		344	y0 = (vector unsigned char) \
		345	vec_perm(y1ivP[0], y1ivP[1], align_perm); \
		346	\
		347	align_perm = vec_lvsl(0, y2i); \
		348	y1 = (vector unsigned char) \
		349	vec_perm(y2ivP[0], y2ivP[1], align_perm); \
		350	\
		351	align_perm = vec_lvsl(0, ui); \
		352	u = (vector signed char) \
		353	vec_perm(uivP[0], uivP[1], align_perm); \
		354	\
		355	align_perm = vec_lvsl(0, vi); \
		356	v = (vector signed char) \
		357	vec_perm(vivP[0], vivP[1], align_perm); \
		358	\
		359	u = (vector signed char) \
		360	vec_sub(u, \
		361	(vector signed char) \
		362	vec_splat((vector signed char) { 128 }, 0)); \
		363	v = (vector signed char) \
		364	vec_sub(v, \
		365	(vector signed char) \
		366	vec_splat((vector signed char) { 128 }, 0)); \
		367	\
		368	U = vec_unpackh(u); \
		369	V = vec_unpackh(v); \
		370	\
		371	Y0 = vec_unh(y0); \
		372	Y1 = vec_unl(y0); \
		373	Y2 = vec_unh(y1); \
		374	Y3 = vec_unl(y1); \
		375	\
		376	Y0 = vec_mradds(Y0, lCY, lOY); \
		377	Y1 = vec_mradds(Y1, lCY, lOY); \
		378	Y2 = vec_mradds(Y2, lCY, lOY); \
		379	Y3 = vec_mradds(Y3, lCY, lOY); \
		380	\
		381	/* ux = (CBU * (u << CSHIFT) + 0x4000) >> 15 */ \
		382	ux = vec_sl(U, lCSHIFT); \
		383	ux = vec_mradds(ux, lCBU, (vector signed short) { 0 }); \
		384	ux0 = vec_mergeh(ux, ux); \
		385	ux1 = vec_mergel(ux, ux); \
		386	\
		387	/* vx = (CRV * (v << CSHIFT) + 0x4000) >> 15; */ \
		388	vx = vec_sl(V, lCSHIFT); \
		389	vx = vec_mradds(vx, lCRV, (vector signed short) { 0 }); \
		390	vx0 = vec_mergeh(vx, vx); \
		391	vx1 = vec_mergel(vx, vx); \
		392	\
		393	/* uvx = ((CGU * u) + (CGV * v)) >> 15 */ \
		394	uvx = vec_mradds(U, lCGU, (vector signed short) { 0 }); \
		395	uvx = vec_mradds(V, lCGV, uvx); \
		396	uvx0 = vec_mergeh(uvx, uvx); \
		397	uvx1 = vec_mergel(uvx, uvx); \
		398	\
		399	R0 = vec_add(Y0, vx0); \
		400	G0 = vec_add(Y0, uvx0); \
		401	B0 = vec_add(Y0, ux0); \
		402	R1 = vec_add(Y1, vx1); \
		403	G1 = vec_add(Y1, uvx1); \
		404	B1 = vec_add(Y1, ux1); \
		405	\
		406	R = vec_packclp(R0, R1); \
		407	G = vec_packclp(G0, G1); \
		408	B = vec_packclp(B0, B1); \
		409	\
		410	out_pixels(R, G, B, oute); \
		411	\
		412	R0 = vec_add(Y2, vx0); \
		413	G0 = vec_add(Y2, uvx0); \
		414	B0 = vec_add(Y2, ux0); \
		415	R1 = vec_add(Y3, vx1); \
		416	G1 = vec_add(Y3, uvx1); \
		417	B1 = vec_add(Y3, ux1); \
		418	R = vec_packclp(R0, R1); \
		419	G = vec_packclp(G0, G1); \
		420	B = vec_packclp(B0, B1); \
		421	\
		422	\
		423	out_pixels(R, G, B, outo); \
		424	\
		425	y1i += 16; \
		426	y2i += 16; \
		427	ui += 8; \
		428	vi += 8; \
		429	} \
		430	\
		431	ui += instrides_scl[1]; \
		432	vi += instrides_scl[2]; \
		433	y1i += instrides_scl[0]; \
		434	y2i += instrides_scl[0]; \
		435	} \
		436	return srcSliceH; \
		437	}
		438
		439	#define out_abgr(a, b, c, ptr) \
		440	vec_mstrgb32(__typeof__(a), ((__typeof__(a)) { 255 }), c, b, a, ptr)
		441	#define out_bgra(a, b, c, ptr) \
		442	vec_mstrgb32(__typeof__(a), c, b, a, ((__typeof__(a)) { 255 }), ptr)
		443	#define out_rgba(a, b, c, ptr) \
		444	vec_mstrgb32(__typeof__(a), a, b, c, ((__typeof__(a)) { 255 }), ptr)
		445	#define out_argb(a, b, c, ptr) \
		446	vec_mstrgb32(__typeof__(a), ((__typeof__(a)) { 255 }), a, b, c, ptr)
		447	#define out_rgb24(a, b, c, ptr) vec_mstrgb24(a, b, c, ptr)
		448	#define out_bgr24(a, b, c, ptr) vec_mstbgr24(a, b, c, ptr)
		449
		450	DEFCSP420_CVT(yuv2_abgr, out_abgr)
		451	DEFCSP420_CVT(yuv2_bgra, out_bgra)
		452	DEFCSP420_CVT(yuv2_rgba, out_rgba)
		453	DEFCSP420_CVT(yuv2_argb, out_argb)
		454	DEFCSP420_CVT(yuv2_rgb24, out_rgb24)
		455	DEFCSP420_CVT(yuv2_bgr24, out_bgr24)
		456
		457	// uyvy\|uyvy\|uyvy\|uyvy
		458	// 0123 4567 89ab cdef
		459	static const vector unsigned char
		460	demux_u = { 0x10, 0x00, 0x10, 0x00,
		461	0x10, 0x04, 0x10, 0x04,
		462	0x10, 0x08, 0x10, 0x08,
		463	0x10, 0x0c, 0x10, 0x0c },
		464	demux_v = { 0x10, 0x02, 0x10, 0x02,
		465	0x10, 0x06, 0x10, 0x06,
		466	0x10, 0x0A, 0x10, 0x0A,
		467	0x10, 0x0E, 0x10, 0x0E },
		468	demux_y = { 0x10, 0x01, 0x10, 0x03,
		469	0x10, 0x05, 0x10, 0x07,
		470	0x10, 0x09, 0x10, 0x0B,
		471	0x10, 0x0D, 0x10, 0x0F };
		472
		473	/*
		474	* this is so I can play live CCIR raw video
		475	*/
		476	static int altivec_uyvy_rgb32(SwsContext c, const unsigned char *in,
		477	int *instrides, int srcSliceY, int srcSliceH,
		478	unsigned char *oplanes, int outstrides)
		479	{
		480	int w = c->srcW;
		481	int h = srcSliceH;
		482	int i, j;
		483	vector unsigned char uyvy;
		484	vector signed short Y, U, V;
		485	vector signed short R0, G0, B0, R1, G1, B1;
		486	vector unsigned char R, G, B;
		487	vector unsigned char *out;
		488	const ubyte *img;
		489
		490	img = in[0];
		491	out = (vector unsigned char ) (oplanes[0] + srcSliceY outstrides[0]);
		492
		493	for (i = 0; i < h; i++)
		494	for (j = 0; j < w / 16; j++) {
		495	uyvy = vec_ld(0, img);
		496
		497	U = (vector signed short)
		498	vec_perm(uyvy, (vector unsigned char) { 0 }, demux_u);
		499	V = (vector signed short)
		500	vec_perm(uyvy, (vector unsigned char) { 0 }, demux_v);
		501	Y = (vector signed short)
		502	vec_perm(uyvy, (vector unsigned char) { 0 }, demux_y);
		503
		504	cvtyuvtoRGB(c, Y, U, V, &R0, &G0, &B0);
		505
		506	uyvy = vec_ld(16, img);
		507
		508	U = (vector signed short)
		509	vec_perm(uyvy, (vector unsigned char) { 0 }, demux_u);
		510	V = (vector signed short)
		511	vec_perm(uyvy, (vector unsigned char) { 0 }, demux_v);
		512	Y = (vector signed short)
		513	vec_perm(uyvy, (vector unsigned char) { 0 }, demux_y);
		514
		515	cvtyuvtoRGB(c, Y, U, V, &R1, &G1, &B1);
		516
		517	R = vec_packclp(R0, R1);
		518	G = vec_packclp(G0, G1);
		519	B = vec_packclp(B0, B1);
		520
		521	// vec_mstbgr24 (R,G,B, out);
		522	out_rgba(R, G, B, out);
		523
		524	img += 32;
		525	}
		526	return srcSliceH;
		527	}
		528
		529	#endif /* HAVE_ALTIVEC */
		530
		531	/* Ok currently the acceleration routine only supports
		532	* inputs of widths a multiple of 16
		533	* and heights a multiple 2
		534	*
		535	* So we just fall back to the C codes for this.
		536	*/
		537	av_cold SwsFunc ff_yuv2rgb_init_ppc(SwsContext *c)
		538	{
		539	#if HAVE_ALTIVEC
		540	if (!(av_get_cpu_flags() & AV_CPU_FLAG_ALTIVEC))
		541	return NULL;
		542
		543	/*
		544	* and this seems not to matter too much I tried a bunch of
		545	* videos with abnormal widths and MPlayer crashes elsewhere.
		546	* mplayer -vo x11 -rawvideo on:w=350:h=240 raw-350x240.eyuv
		547	* boom with X11 bad match.
		548	*
		549	*/
		550	if ((c->srcW & 0xf) != 0)
		551	return NULL;
		552
		553	switch (c->srcFormat) {
		554	case AV_PIX_FMT_YUV410P:
		555	case AV_PIX_FMT_YUV420P:
		556	/case IMGFMT_CLPL: ??? /
		557	case AV_PIX_FMT_GRAY8:
		558	case AV_PIX_FMT_NV12:
		559	case AV_PIX_FMT_NV21:
		560	if ((c->srcH & 0x1) != 0)
		561	return NULL;
		562
		563	switch (c->dstFormat) {
		564	case AV_PIX_FMT_RGB24:
		565	av_log(c, AV_LOG_WARNING, "ALTIVEC: Color Space RGB24\n");
		566	return altivec_yuv2_rgb24;
		567	case AV_PIX_FMT_BGR24:
		568	av_log(c, AV_LOG_WARNING, "ALTIVEC: Color Space BGR24\n");
		569	return altivec_yuv2_bgr24;
		570	case AV_PIX_FMT_ARGB:
		571	av_log(c, AV_LOG_WARNING, "ALTIVEC: Color Space ARGB\n");
		572	return altivec_yuv2_argb;
		573	case AV_PIX_FMT_ABGR:
		574	av_log(c, AV_LOG_WARNING, "ALTIVEC: Color Space ABGR\n");
		575	return altivec_yuv2_abgr;
		576	case AV_PIX_FMT_RGBA:
		577	av_log(c, AV_LOG_WARNING, "ALTIVEC: Color Space RGBA\n");
		578	return altivec_yuv2_rgba;
		579	case AV_PIX_FMT_BGRA:
		580	av_log(c, AV_LOG_WARNING, "ALTIVEC: Color Space BGRA\n");
		581	return altivec_yuv2_bgra;
		582	default: return NULL;
		583	}
		584	break;
		585
		586	case AV_PIX_FMT_UYVY422:
		587	switch (c->dstFormat) {
		588	case AV_PIX_FMT_BGR32:
		589	av_log(c, AV_LOG_WARNING, "ALTIVEC: Color Space UYVY -> RGB32\n");
		590	return altivec_uyvy_rgb32;
		591	default: return NULL;
		592	}
		593	break;
		594	}
		595	#endif /* HAVE_ALTIVEC */
		596
		597	return NULL;
		598	}
		599
		600	av_cold void ff_yuv2rgb_init_tables_ppc(SwsContext *c,
		601	const int inv_table[4],
		602	int brightness,
		603	int contrast,
		604	int saturation)
		605	{
		606	#if HAVE_ALTIVEC
		607	union {
		608	DECLARE_ALIGNED(16, signed short, tmp)[8];
		609	vector signed short vec;
		610	} buf;
		611
		612	if (!(av_get_cpu_flags() & AV_CPU_FLAG_ALTIVEC))
		613	return;
		614
		615	buf.tmp[0] = ((0xffffLL) * contrast >> 8) >> 9; // cy
		616	buf.tmp[1] = -256 * brightness; // oy
		617	buf.tmp[2] = (inv_table[0] >> 3) * (contrast >> 16) * (saturation >> 16); // crv
		618	buf.tmp[3] = (inv_table[1] >> 3) * (contrast >> 16) * (saturation >> 16); // cbu
		619	buf.tmp[4] = -((inv_table[2] >> 1) * (contrast >> 16) * (saturation >> 16)); // cgu
		620	buf.tmp[5] = -((inv_table[3] >> 1) * (contrast >> 16) * (saturation >> 16)); // cgv
		621
		622	c->CSHIFT = (vector unsigned short) vec_splat_u16(2);
		623	c->CY = vec_splat((vector signed short) buf.vec, 0);
		624	c->OY = vec_splat((vector signed short) buf.vec, 1);
		625	c->CRV = vec_splat((vector signed short) buf.vec, 2);
		626	c->CBU = vec_splat((vector signed short) buf.vec, 3);
		627	c->CGU = vec_splat((vector signed short) buf.vec, 4);
		628	c->CGV = vec_splat((vector signed short) buf.vec, 5);
		629	return;
		630	#endif /* HAVE_ALTIVEC */
		631	}
		632
		633	#if HAVE_ALTIVEC
		634
		635	static av_always_inline void yuv2packedX_altivec(SwsContext *c,
		636	const int16_t *lumFilter,
		637	const int16_t **lumSrc,
		638	int lumFilterSize,
		639	const int16_t *chrFilter,
		640	const int16_t **chrUSrc,
		641	const int16_t **chrVSrc,
		642	int chrFilterSize,
		643	const int16_t **alpSrc,
		644	uint8_t *dest,
		645	int dstW, int dstY,
		646	enum AVPixelFormat target)
		647	{
		648	int i, j;
		649	vector signed short X, X0, X1, Y0, U0, V0, Y1, U1, V1, U, V;
		650	vector signed short R0, G0, B0, R1, G1, B1;
		651
		652	vector unsigned char R, G, B;
		653	vector unsigned char out, nout;
		654
		655	vector signed short RND = vec_splat_s16(1 << 3);
		656	vector unsigned short SCL = vec_splat_u16(4);
		657	DECLARE_ALIGNED(16, unsigned int, scratch)[16];
		658
		659	vector signed short YCoeffs, CCoeffs;
		660
		661	YCoeffs = c->vYCoeffsBank + dstY * lumFilterSize;
		662	CCoeffs = c->vCCoeffsBank + dstY * chrFilterSize;
		663
		664	out = (vector unsigned char *) dest;
		665
		666	for (i = 0; i < dstW; i += 16) {
		667	Y0 = RND;
		668	Y1 = RND;
		669	/* extract 16 coeffs from lumSrc */
		670	for (j = 0; j < lumFilterSize; j++) {
		671	X0 = vec_ld(0, &lumSrc[j][i]);
		672	X1 = vec_ld(16, &lumSrc[j][i]);
		673	Y0 = vec_mradds(X0, YCoeffs[j], Y0);
		674	Y1 = vec_mradds(X1, YCoeffs[j], Y1);
		675	}
		676
		677	U = RND;
		678	V = RND;
		679	/* extract 8 coeffs from U,V */
		680	for (j = 0; j < chrFilterSize; j++) {
		681	X = vec_ld(0, &chrUSrc[j][i / 2]);
		682	U = vec_mradds(X, CCoeffs[j], U);
		683	X = vec_ld(0, &chrVSrc[j][i / 2]);
		684	V = vec_mradds(X, CCoeffs[j], V);
		685	}
		686
		687	/* scale and clip signals */
		688	Y0 = vec_sra(Y0, SCL);
		689	Y1 = vec_sra(Y1, SCL);
		690	U = vec_sra(U, SCL);
		691	V = vec_sra(V, SCL);
		692
		693	Y0 = vec_clip_s16(Y0);
		694	Y1 = vec_clip_s16(Y1);
		695	U = vec_clip_s16(U);
		696	V = vec_clip_s16(V);
		697
		698	/* now we have
		699	* Y0 = y0 y1 y2 y3 y4 y5 y6 y7 Y1 = y8 y9 y10 y11 y12 y13 y14 y15
		700	* U = u0 u1 u2 u3 u4 u5 u6 u7 V = v0 v1 v2 v3 v4 v5 v6 v7
		701	*
		702	* Y0 = y0 y1 y2 y3 y4 y5 y6 y7 Y1 = y8 y9 y10 y11 y12 y13 y14 y15
		703	* U0 = u0 u0 u1 u1 u2 u2 u3 u3 U1 = u4 u4 u5 u5 u6 u6 u7 u7
		704	* V0 = v0 v0 v1 v1 v2 v2 v3 v3 V1 = v4 v4 v5 v5 v6 v6 v7 v7
		705	*/
		706
		707	U0 = vec_mergeh(U, U);
		708	V0 = vec_mergeh(V, V);
		709
		710	U1 = vec_mergel(U, U);
		711	V1 = vec_mergel(V, V);
		712
		713	cvtyuvtoRGB(c, Y0, U0, V0, &R0, &G0, &B0);
		714	cvtyuvtoRGB(c, Y1, U1, V1, &R1, &G1, &B1);
		715
		716	R = vec_packclp(R0, R1);
		717	G = vec_packclp(G0, G1);
		718	B = vec_packclp(B0, B1);
		719
		720	switch (target) {
		721	case AV_PIX_FMT_ABGR:
		722	out_abgr(R, G, B, out);
		723	break;
		724	case AV_PIX_FMT_BGRA:
		725	out_bgra(R, G, B, out);
		726	break;
		727	case AV_PIX_FMT_RGBA:
		728	out_rgba(R, G, B, out);
		729	break;
		730	case AV_PIX_FMT_ARGB:
		731	out_argb(R, G, B, out);
		732	break;
		733	case AV_PIX_FMT_RGB24:
		734	out_rgb24(R, G, B, out);
		735	break;
		736	case AV_PIX_FMT_BGR24:
		737	out_bgr24(R, G, B, out);
		738	break;
		739	default:
		740	{
		741	/* If this is reached, the caller should have called yuv2packedXinC
		742	* instead. */
		743	static int printed_error_message;
		744	if (!printed_error_message) {
		745	av_log(c, AV_LOG_ERROR,
		746	"altivec_yuv2packedX doesn't support %s output\n",
		747	av_get_pix_fmt_name(c->dstFormat));
		748	printed_error_message = 1;
		749	}
		750	return;
		751	}
		752	}
		753	}
		754
		755	if (i < dstW) {
		756	i -= 16;
		757
		758	Y0 = RND;
		759	Y1 = RND;
		760	/* extract 16 coeffs from lumSrc */
		761	for (j = 0; j < lumFilterSize; j++) {
		762	X0 = vec_ld(0, &lumSrc[j][i]);
		763	X1 = vec_ld(16, &lumSrc[j][i]);
		764	Y0 = vec_mradds(X0, YCoeffs[j], Y0);
		765	Y1 = vec_mradds(X1, YCoeffs[j], Y1);
		766	}
		767
		768	U = RND;
		769	V = RND;
		770	/* extract 8 coeffs from U,V */
		771	for (j = 0; j < chrFilterSize; j++) {
		772	X = vec_ld(0, &chrUSrc[j][i / 2]);
		773	U = vec_mradds(X, CCoeffs[j], U);
		774	X = vec_ld(0, &chrVSrc[j][i / 2]);
		775	V = vec_mradds(X, CCoeffs[j], V);
		776	}
		777
		778	/* scale and clip signals */
		779	Y0 = vec_sra(Y0, SCL);
		780	Y1 = vec_sra(Y1, SCL);
		781	U = vec_sra(U, SCL);
		782	V = vec_sra(V, SCL);
		783
		784	Y0 = vec_clip_s16(Y0);
		785	Y1 = vec_clip_s16(Y1);
		786	U = vec_clip_s16(U);
		787	V = vec_clip_s16(V);
		788
		789	/* now we have
		790	* Y0 = y0 y1 y2 y3 y4 y5 y6 y7 Y1 = y8 y9 y10 y11 y12 y13 y14 y15
		791	* U = u0 u1 u2 u3 u4 u5 u6 u7 V = v0 v1 v2 v3 v4 v5 v6 v7
		792	*
		793	* Y0 = y0 y1 y2 y3 y4 y5 y6 y7 Y1 = y8 y9 y10 y11 y12 y13 y14 y15
		794	* U0 = u0 u0 u1 u1 u2 u2 u3 u3 U1 = u4 u4 u5 u5 u6 u6 u7 u7
		795	* V0 = v0 v0 v1 v1 v2 v2 v3 v3 V1 = v4 v4 v5 v5 v6 v6 v7 v7
		796	*/
		797
		798	U0 = vec_mergeh(U, U);
		799	V0 = vec_mergeh(V, V);
		800
		801	U1 = vec_mergel(U, U);
		802	V1 = vec_mergel(V, V);
		803
		804	cvtyuvtoRGB(c, Y0, U0, V0, &R0, &G0, &B0);
		805	cvtyuvtoRGB(c, Y1, U1, V1, &R1, &G1, &B1);
		806
		807	R = vec_packclp(R0, R1);
		808	G = vec_packclp(G0, G1);
		809	B = vec_packclp(B0, B1);
		810
		811	nout = (vector unsigned char *) scratch;
		812	switch (target) {
		813	case AV_PIX_FMT_ABGR:
		814	out_abgr(R, G, B, nout);
		815	break;
		816	case AV_PIX_FMT_BGRA:
		817	out_bgra(R, G, B, nout);
		818	break;
		819	case AV_PIX_FMT_RGBA:
		820	out_rgba(R, G, B, nout);
		821	break;
		822	case AV_PIX_FMT_ARGB:
		823	out_argb(R, G, B, nout);
		824	break;
		825	case AV_PIX_FMT_RGB24:
		826	out_rgb24(R, G, B, nout);
		827	break;
		828	case AV_PIX_FMT_BGR24:
		829	out_bgr24(R, G, B, nout);
		830	break;
		831	default:
		832	/* Unreachable, I think. */
		833	av_log(c, AV_LOG_ERROR,
		834	"altivec_yuv2packedX doesn't support %s output\n",
		835	av_get_pix_fmt_name(c->dstFormat));
		836	return;
		837	}
		838
		839	memcpy(&((uint32_t *) dest)[i], scratch, (dstW - i) / 4);
		840	}
		841	}
		842
		843	#define YUV2PACKEDX_WRAPPER(suffix, pixfmt) \
		844	void ff_yuv2 ## suffix ## _X_altivec(SwsContext *c, \
		845	const int16_t *lumFilter, \
		846	const int16_t **lumSrc, \
		847	int lumFilterSize, \
		848	const int16_t *chrFilter, \
		849	const int16_t **chrUSrc, \
		850	const int16_t **chrVSrc, \
		851	int chrFilterSize, \
		852	const int16_t **alpSrc, \
		853	uint8_t *dest, int dstW, int dstY) \
		854	{ \
		855	yuv2packedX_altivec(c, lumFilter, lumSrc, lumFilterSize, \
		856	chrFilter, chrUSrc, chrVSrc, \
		857	chrFilterSize, alpSrc, \
		858	dest, dstW, dstY, pixfmt); \
		859	}
		860
		861	YUV2PACKEDX_WRAPPER(abgr, AV_PIX_FMT_ABGR);
		862	YUV2PACKEDX_WRAPPER(bgra, AV_PIX_FMT_BGRA);
		863	YUV2PACKEDX_WRAPPER(argb, AV_PIX_FMT_ARGB);
		864	YUV2PACKEDX_WRAPPER(rgba, AV_PIX_FMT_RGBA);
		865	YUV2PACKEDX_WRAPPER(rgb24, AV_PIX_FMT_RGB24);
		866	YUV2PACKEDX_WRAPPER(bgr24, AV_PIX_FMT_BGR24);
		867
		868	#endif /* HAVE_ALTIVEC */

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(root)/contrib/sdk/sources/ffmpeg/libswscale/ppc/yuv2rgb_altivec.c @ 4349 – Rev