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authorgpoirier <gpoirier@b3059339-0415-0410-9bf9-f77b7e298cf2>2007-05-13 19:22:32 +0000
committergpoirier <gpoirier@b3059339-0415-0410-9bf9-f77b7e298cf2>2007-05-13 19:22:32 +0000
commitea9075f2c7f342807f37edb0d4bab57bb88aad52 (patch)
tree0752417fb4b184e6ba8f04b63c90c0a37d50986f
parent3bfd50bdd8ac81dc47ea5412ff99ba51f3e976f2 (diff)
downloadmpv-ea9075f2c7f342807f37edb0d4bab57bb88aad52.tar.bz2
mpv-ea9075f2c7f342807f37edb0d4bab57bb88aad52.tar.xz
Blackfin optimized YUV420 to RGB CSC Color Space Converters.
YUV2 -> RGB BGR for 565, 555 and 888 a.k.a. 24bit color. Speed-up compared to C version compiled with -O3 187.28% Patch by Marc Hoffman %mmh A pleasantst P com% Original thread: Date: May 9, 2007 2:46 AM Subject: [FFmpeg-devel] PATCH BlackFin yuv2rgb color space conversion git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@23307 b3059339-0415-0410-9bf9-f77b7e298cf2
-rw-r--r--libswscale/Makefile3
-rw-r--r--libswscale/internal_bfin.S454
-rw-r--r--libswscale/swscale.c4
-rw-r--r--libswscale/swscale.h1
-rw-r--r--libswscale/swscale_internal.h16
-rw-r--r--libswscale/yuv2rgb.c8
-rw-r--r--libswscale/yuv2rgb_bfin.c205
7 files changed, 690 insertions, 1 deletions
diff --git a/libswscale/Makefile b/libswscale/Makefile
index f6adf2a514..dac331e474 100644
--- a/libswscale/Makefile
+++ b/libswscale/Makefile
@@ -12,6 +12,9 @@ OBJS= swscale.o rgb2rgb.o
OBJS-$(TARGET_ALTIVEC) += yuv2rgb_altivec.o
OBJS-$(CONFIG_GPL) += yuv2rgb.o
+OBJS-$(TARGET_ARCH_BFIN) += yuv2rgb_bfin.o
+ASM_OBJS-$(TARGET_ARCH_BFIN) += internal_bfin.o
+
HEADERS = swscale.h rgb2rgb.h
include ../common.mak
diff --git a/libswscale/internal_bfin.S b/libswscale/internal_bfin.S
new file mode 100644
index 0000000000..d61b07e9cb
--- /dev/null
+++ b/libswscale/internal_bfin.S
@@ -0,0 +1,454 @@
+/*
+ * Copyright (C) 2007 Marc Hoffman <marc.hoffman@analog.com>
+ * April 20, 2007
+ *
+ * Blackfin Video Color Space Converters Operations
+ * convert I420 YV12 to RGB in various formats,
+ *
+ * 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
+ */
+
+
+/*
+ YUV420 to RGB565 conversion. This routine takes a YUV 420 planar macroblock
+ and converts it to RGB565. R:5 bits, G:6 bits, B:5 bits.. packed into shorts
+
+
+ The following calculation is used for the conversion:
+
+ r = clipz((y-oy)*cy + crv*(v-128))
+ g = clipz((y-oy)*cy + cgv*(v-128) + cgu*(u-128))
+ b = clipz((y-oy)*cy + cbu*(u-128))
+
+ y,u,v are pre scaled by a factor of 4 i.e. left shifted to gain precision.
+
+
+ New factorization to elliminate the truncation error which was
+ occuring due to the byteop3p.
+
+
+ 1) use the bytop16m to subtract quad bytes we use this in U8 this
+ then so the offsets need to be renormalized to 8bits.
+
+ 2) scale operands up by a factor of 4 not 8 because Blackfin
+ multiplies include a shift.
+
+ 3) compute into the accumulators cy*yx0, cy*yx1
+
+ 4) compute each of the linear equations
+ r = clipz((y-oy)*cy + crv*(v-128))
+
+ g = clipz((y-oy)*cy + cgv*(v-128) + cgu*(u-128))
+
+ b = clipz((y-oy)*cy + cbu*(u-128))
+
+ reuse of the accumulators requires that we actually multiply
+ twice once with addition and the second time with a subtaction.
+
+ because of this we need to compute the equations in the order R B
+ then G saving the writes for B in the case of 24/32 bit color
+ formats.
+
+ api: yuv2rgb_kind (uint8_t *Y, uint8_t *U, uint8_t *V, int *out,
+ int dW, uint32_t *coeffs);
+
+ A B
+ --- ---
+ i2 = cb i3 = cr
+ i1 = coeff i0 = y
+
+ Where coeffs have the following layout in memory.
+
+ uint32_t oy,oc,zero,cy,crv,rmask,cbu,bmask,cgu,cgv;
+
+ coeffs is a pointer to oy.
+
+ the {rgb} masks are only utilized by the 565 packing algorithm. Note the data
+ replication is used to simplify the internal algorithms for the dual mac architecture
+ of BlackFin.
+
+ All routines are exported with _ff_bfin_ as a symbol prefix
+
+ rough performance gain compared against -O3:
+
+ 2779809/1484290 187.28%
+
+ which translates to ~33c/pel to ~57c/pel for the reference vs 17.5
+ c/pel for the optimized implementations. Not sure why there is such a
+ huge variation on the reference codes on Blackfin I guess it must have
+ to do with the memory system.
+
+*/
+
+#define mL1 .l1.text
+#define mL3 .text
+#define MEM mL1
+
+#define DEFUN(fname,where,interface) \
+ .section where; \
+ .global _ff_bfin_ ## fname; \
+ .type _ff_bfin_ ## fname, STT_FUNC; \
+ .align 8; \
+ _ff_bfin_ ## fname
+
+#define DEFUN_END(fname) \
+ .size _ff_bfin_ ## fname, . - _ff_bfin_ ## fname
+
+
+.text
+
+#define COEFF_LEN 11*4
+#define COEFF_REL_CY_OFF 4*4
+
+#define ARG_OUT 20
+#define ARG_W 24
+#define ARG_COEFF 28
+
+DEFUN(yuv2rgb565_line,MEM,
+ (uint8_t *Y, uint8_t *U, uint8_t *V, int *out, int dW, uint32_t *coeffs)):
+ link 0;
+ [--sp] = (r7:4);
+ p1 = [fp+ARG_OUT];
+ r3 = [fp+ARG_W];
+
+ i0 = r0;
+ i2 = r1;
+ i3 = r2;
+
+ r0 = [fp+ARG_COEFF];
+ i1 = r0;
+ b1 = i1;
+ l1 = COEFF_LEN;
+ m0 = COEFF_REL_CY_OFF;
+ p0 = r3;
+
+ r0 = [i0++]; // 2Y
+ r1.l = w[i2++]; // 2u
+ r1.h = w[i3++]; // 2v
+ p0 = p0>>2;
+
+ lsetup (.L0565, .L1565) lc0 = p0;
+
+ /*
+ uint32_t oy,oc,zero,cy,crv,rmask,cbu,bmask,cgu,cgv
+ r0 -- used to load 4ys
+ r1 -- used to load 2us,2vs
+ r4 -- y3,y2
+ r5 -- y1,y0
+ r6 -- u1,u0
+ r7 -- v1,v0
+ */
+ r2=[i1++]; // oy
+.L0565:
+ /*
+ rrrrrrrr gggggggg bbbbbbbb
+ 5432109876543210
+ bbbbb >>3
+ gggggggg <<3
+ rrrrrrrr <<8
+ rrrrrggggggbbbbb
+ */
+ (r4,r5) = byteop16m (r1:0, r3:2) || r3=[i1++]; // oc
+ (r7,r6) = byteop16m (r1:0, r3:2) (r);
+ r5 = r5 << 2 (v); // y1,y0
+ r4 = r4 << 2 (v); // y3,y2
+ r6 = r6 << 2 (v) || r0=[i1++]; // u1,u0, r0=zero
+ r7 = r7 << 2 (v) || r1=[i1++]; // v1,v0 r1=cy
+ /* Y' = y*cy */
+ a1 = r1.h*r5.h, a0 = r1.l*r5.l || r1=[i1++]; // crv
+
+ /* R = Y+ crv*(Cr-128) */
+ r2.h = (a1 += r1.h*r7.l), r2.l = (a0 += r1.l*r7.l);
+ a1 -= r1.h*r7.l, a0 -= r1.l*r7.l || r5=[i1++]; // rmask
+ r2 = byteop3p(r3:2, r1:0)(LO) || r1=[i1++]; // cbu
+ r2 = r2 >> 3 (v);
+ r3 = r2 & r5;
+
+ /* B = Y+ cbu*(Cb-128) */
+ r2.h = (a1 += r1.h*r6.l), r2.l = (a0 += r1.l*r6.l);
+ a1 -= r1.h*r6.l, a0 -= r1.l*r6.l || r5=[i1++]; // bmask
+ r2 = byteop3p(r3:2, r1:0)(LO) || r1=[i1++]; // cgu
+ r2 = r2 << 8 (v);
+ r2 = r2 & r5;
+ r3 = r3 | r2;
+
+ /* G = Y+ cgu*(Cb-128)+cgv*(Cr-128) */
+ a1 += r1.h*r6.l, a0 += r1.l*r6.l || r1=[i1++]; // cgv
+ r2.h = (a1 += r1.h*r7.l), r2.l = (a0 += r1.l*r7.l);
+ r2 = byteop3p(r3:2, r1:0)(LO) || r5=[i1++m0]; // gmask
+ r2 = r2 << 3 (v);
+ r2 = r2 & r5;
+ r3 = r3 | r2;
+ [p1++]=r3 || r1=[i1++]; // cy
+
+ /* Y' = y*cy */
+
+ a1 = r1.h*r4.h, a0 = r1.l*r4.l || r1=[i1++]; // crv
+
+ /* R = Y+ crv*(Cr-128) */
+ r2.h = (a1 += r1.h*r7.h), r2.l = (a0 += r1.l*r7.h);
+ a1 -= r1.h*r7.h, a0 -= r1.l*r7.h || r5=[i1++]; // rmask
+ r2 = byteop3p(r3:2, r1:0)(LO) || r1=[i1++]; // cbu
+ r2 = r2 >> 3 (v);
+ r3 = r2 & r5;
+
+ /* B = Y+ cbu*(Cb-128) */
+ r2.h = (a1 += r1.h*r6.h), r2.l = (a0 += r1.l*r6.h);
+ a1 -= r1.h*r6.h, a0 -= r1.l*r6.h || r5=[i1++]; // bmask
+ r2 = byteop3p(r3:2, r1:0)(LO) || r1=[i1++]; // cgu
+ r2 = r2 << 8 (v);
+ r2 = r2 & r5;
+ r3 = r3 | r2;
+
+ /* G = Y+ cgu*(Cb-128)+cgv*(Cr-128) */
+ a1 += r1.h*r6.h, a0 += r1.l*r6.h || r1=[i1++]; // cgv
+ r2.h = (a1 += r1.h*r7.h), r2.l = (a0 += r1.l*r7.h) || r5=[i1++]; // gmask
+ r2 = byteop3p(r3:2, r1:0)(LO) || r0 = [i0++]; // 2Y
+ r2 = r2 << 3 (v) || r1.l = w[i2++]; // 2u
+ r2 = r2 & r5;
+ r3 = r3 | r2;
+ [p1++]=r3 || r1.h = w[i3++]; // 2v
+.L1565: r2=[i1++]; // oy
+
+ l1 = 0;
+
+ (r7:4) = [sp++];
+ unlink;
+ rts;
+DEFUN_END(yuv2rgb565_line)
+
+DEFUN(yuv2rgb555_line,MEM,
+ (uint8_t *Y, uint8_t *U, uint8_t *V, int *out, int dW, uint32_t *coeffs)):
+ link 0;
+ [--sp] = (r7:4);
+ p1 = [fp+ARG_OUT];
+ r3 = [fp+ARG_W];
+
+ i0 = r0;
+ i2 = r1;
+ i3 = r2;
+
+ r0 = [fp+ARG_COEFF];
+ i1 = r0;
+ b1 = i1;
+ l1 = COEFF_LEN;
+ m0 = COEFF_REL_CY_OFF;
+ p0 = r3;
+
+ r0 = [i0++]; // 2Y
+ r1.l = w[i2++]; // 2u
+ r1.h = w[i3++]; // 2v
+ p0 = p0>>2;
+
+ lsetup (.L0555, .L1555) lc0 = p0;
+
+ /*
+ uint32_t oy,oc,zero,cy,crv,rmask,cbu,bmask,cgu,cgv
+ r0 -- used to load 4ys
+ r1 -- used to load 2us,2vs
+ r4 -- y3,y2
+ r5 -- y1,y0
+ r6 -- u1,u0
+ r7 -- v1,v0
+ */
+ r2=[i1++]; // oy
+.L0555:
+ /*
+ rrrrrrrr gggggggg bbbbbbbb
+ 5432109876543210
+ bbbbb >>3
+ gggggggg <<2
+ rrrrrrrr <<7
+ xrrrrrgggggbbbbb
+ */
+
+ (r4,r5) = byteop16m (r1:0, r3:2) || r3=[i1++]; // oc
+ (r7,r6) = byteop16m (r1:0, r3:2) (r);
+ r5 = r5 << 2 (v); // y1,y0
+ r4 = r4 << 2 (v); // y3,y2
+ r6 = r6 << 2 (v) || r0=[i1++]; // u1,u0, r0=zero
+ r7 = r7 << 2 (v) || r1=[i1++]; // v1,v0 r1=cy
+ /* Y' = y*cy */
+ a1 = r1.h*r5.h, a0 = r1.l*r5.l || r1=[i1++]; // crv
+
+ /* R = Y+ crv*(Cr-128) */
+ r2.h = (a1 += r1.h*r7.l), r2.l = (a0 += r1.l*r7.l);
+ a1 -= r1.h*r7.l, a0 -= r1.l*r7.l || r5=[i1++]; // rmask
+ r2 = byteop3p(r3:2, r1:0)(LO) || r1=[i1++]; // cbu
+ r2 = r2 >> 3 (v);
+ r3 = r2 & r5;
+
+ /* B = Y+ cbu*(Cb-128) */
+ r2.h = (a1 += r1.h*r6.l), r2.l = (a0 += r1.l*r6.l);
+ a1 -= r1.h*r6.l, a0 -= r1.l*r6.l || r5=[i1++]; // bmask
+ r2 = byteop3p(r3:2, r1:0)(LO) || r1=[i1++]; // cgu
+ r2 = r2 << 7 (v);
+ r2 = r2 & r5;
+ r3 = r3 | r2;
+
+ /* G = Y+ cgu*(Cb-128)+cgv*(Cr-128) */
+ a1 += r1.h*r6.l, a0 += r1.l*r6.l || r1=[i1++]; // cgv
+ r2.h = (a1 += r1.h*r7.l), r2.l = (a0 += r1.l*r7.l);
+ r2 = byteop3p(r3:2, r1:0)(LO) || r5=[i1++m0]; // gmask
+ r2 = r2 << 2 (v);
+ r2 = r2 & r5;
+ r3 = r3 | r2;
+ [p1++]=r3 || r1=[i1++]; // cy
+
+ /* Y' = y*cy */
+
+ a1 = r1.h*r4.h, a0 = r1.l*r4.l || r1=[i1++]; // crv
+
+ /* R = Y+ crv*(Cr-128) */
+ r2.h = (a1 += r1.h*r7.h), r2.l = (a0 += r1.l*r7.h);
+ a1 -= r1.h*r7.h, a0 -= r1.l*r7.h || r5=[i1++]; // rmask
+ r2 = byteop3p(r3:2, r1:0)(LO) || r1=[i1++]; // cbu
+ r2 = r2 >> 3 (v);
+ r3 = r2 & r5;
+
+ /* B = Y+ cbu*(Cb-128) */
+ r2.h = (a1 += r1.h*r6.h), r2.l = (a0 += r1.l*r6.h);
+ a1 -= r1.h*r6.h, a0 -= r1.l*r6.h || r5=[i1++]; // bmask
+ r2 = byteop3p(r3:2, r1:0)(LO) || r1=[i1++]; // cgu
+ r2 = r2 << 7 (v);
+ r2 = r2 & r5;
+ r3 = r3 | r2;
+
+ /* G = Y+ cgu*(Cb-128)+cgv*(Cr-128) */
+ a1 += r1.h*r6.h, a0 += r1.l*r6.h || r1=[i1++]; // cgv
+ r2.h = (a1 += r1.h*r7.h), r2.l = (a0 += r1.l*r7.h) || r5=[i1++]; // gmask
+ r2 = byteop3p(r3:2, r1:0)(LO) || r0=[i0++]; // 4Y
+ r2 = r2 << 2 (v) || r1.l=w[i2++]; // 2u
+ r2 = r2 & r5;
+ r3 = r3 | r2;
+ [p1++]=r3 || r1.h=w[i3++]; // 2v
+
+.L1555: r2=[i1++]; // oy
+
+ l1 = 0;
+
+ (r7:4) = [sp++];
+ unlink;
+ rts;
+DEFUN_END(yuv2rgb555_line)
+
+DEFUN(yuv2rgb24_line,MEM,
+ (uint8_t *Y, uint8_t *U, uint8_t *V, int *out, int dW, uint32_t *coeffs)):
+ link 0;
+ [--sp] = (r7:4);
+ p1 = [fp+ARG_OUT];
+ r3 = [fp+ARG_W];
+ p2 = p1;
+ p2 += 3;
+
+ i0 = r0;
+ i2 = r1;
+ i3 = r2;
+
+ r0 = [fp+ARG_COEFF]; // coeff buffer
+ i1 = r0;
+ b1 = i1;
+ l1 = COEFF_LEN;
+ m0 = COEFF_REL_CY_OFF;
+ p0 = r3;
+
+ r0 = [i0++]; // 2Y
+ r1.l = w[i2++]; // 2u
+ r1.h = w[i3++]; // 2v
+ p0 = p0>>2;
+
+ lsetup (.L0888, .L1888) lc0 = p0;
+
+ /*
+ uint32_t oy,oc,zero,cy,crv,rmask,cbu,bmask,cgu,cgv
+ r0 -- used to load 4ys
+ r1 -- used to load 2us,2vs
+ r4 -- y3,y2
+ r5 -- y1,y0
+ r6 -- u1,u0
+ r7 -- v1,v0
+ */
+ r2=[i1++]; // oy
+.L0888:
+ (r4,r5) = byteop16m (r1:0, r3:2) || r3=[i1++]; // oc
+ (r7,r6) = byteop16m (r1:0, r3:2) (r);
+ r5 = r5 << 2 (v); // y1,y0
+ r4 = r4 << 2 (v); // y3,y2
+ r6 = r6 << 2 (v) || r0=[i1++]; // u1,u0, r0=zero
+ r7 = r7 << 2 (v) || r1=[i1++]; // v1,v0 r1=cy
+
+ /* Y' = y*cy */
+ a1 = r1.h*r5.h, a0 = r1.l*r5.l || r1=[i1++]; // crv
+
+ /* R = Y+ crv*(Cr-128) */
+ r2.h = (a1 += r1.h*r7.l), r2.l = (a0 += r1.l*r7.l);
+ a1 -= r1.h*r7.l, a0 -= r1.l*r7.l || r5=[i1++]; // rmask
+ r2 = byteop3p(r3:2, r1:0)(LO) || r1=[i1++]; // cbu
+ r2=r2>>16 || B[p1++]=r2;
+ B[p2++]=r2;
+
+ /* B = Y+ cbu*(Cb-128) */
+ r2.h = (a1 += r1.h*r6.l), r2.l = (a0 += r1.l*r6.l);
+ a1 -= r1.h*r6.l, a0 -= r1.l*r6.l || r5=[i1++]; // bmask
+ r3 = byteop3p(r3:2, r1:0)(LO) || r1=[i1++]; // cgu
+
+ /* G = Y+ cgu*(Cb-128)+cgv*(Cr-128) */
+ a1 += r1.h*r6.l, a0 += r1.l*r6.l || r1=[i1++]; // cgv
+ r2.h = (a1 += r1.h*r7.l), r2.l = (a0 += r1.l*r7.l);
+ r2 = byteop3p(r3:2, r1:0)(LO) || r5=[i1++m0]; // gmask, oy,cy,zero
+
+ r2=r2>>16 || B[p1++]=r2;
+ B[p2++]=r2;
+
+ r3=r3>>16 || B[p1++]=r3;
+ B[p2++]=r3 || r1=[i1++]; // cy
+
+ p1+=3;
+ p2+=3;
+ /* Y' = y*cy */
+ a1 = r1.h*r4.h, a0 = r1.l*r4.l || r1=[i1++]; // crv
+
+ /* R = Y+ crv*(Cr-128) */
+ r2.h = (a1 += r1.h*r7.h), r2.l = (a0 += r1.l*r7.h);
+ a1 -= r1.h*r7.h, a0 -= r1.l*r7.h || r5=[i1++]; // rmask
+ r2 = byteop3p(r3:2, r1:0)(LO) || r1=[i1++]; // cbu
+ r2=r2>>16 || B[p1++]=r2;
+ B[p2++]=r2;
+
+ /* B = Y+ cbu*(Cb-128) */
+ r2.h = (a1 += r1.h*r6.h), r2.l = (a0 += r1.l*r6.h);
+ a1 -= r1.h*r6.h, a0 -= r1.l*r6.h || r5=[i1++]; // bmask
+ r3 = byteop3p(r3:2, r1:0)(LO) || r1=[i1++]; // cgu
+
+ /* G = Y+ cgu*(Cb-128)+cgv*(Cr-128) */
+ a1 += r1.h*r6.h, a0 += r1.l*r6.h || r1=[i1++]; // cgv
+ r2.h = (a1 += r1.h*r7.h), r2.l = (a0 += r1.l*r7.h);
+ r2 = byteop3p(r3:2, r1:0)(LO) || r5=[i1++]; // gmask
+ r2=r2>>16 || B[p1++]=r2 || r0 = [i0++]; // 4y
+ B[p2++]=r2 || r1.l = w[i2++]; // 2u
+ r3=r3>>16 || B[p1++]=r3 || r1.h = w[i3++]; // 2v
+ B[p2++]=r3 || r2=[i1++]; // oy
+
+ p1+=3;
+.L1888: p2+=3;
+
+ l1 = 0;
+
+ (r7:4) = [sp++];
+ unlink;
+ rts;
+DEFUN_END(yuv2rgb888_line)
diff --git a/libswscale/swscale.c b/libswscale/swscale.c
index 583bf1781c..f6261e6461 100644
--- a/libswscale/swscale.c
+++ b/libswscale/swscale.c
@@ -1992,7 +1992,7 @@ SwsContext *sws_getContext(int srcW, int srcH, int srcFormat, int dstW, int dstH
#endif
#if !defined(RUNTIME_CPUDETECT) || !defined (CONFIG_GPL) //ensure that the flags match the compiled variant if cpudetect is off
- flags &= ~(SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2|SWS_CPU_CAPS_3DNOW|SWS_CPU_CAPS_ALTIVEC);
+ flags &= ~(SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2|SWS_CPU_CAPS_3DNOW|SWS_CPU_CAPS_ALTIVEC|SWS_CPU_CAPS_BFIN);
#ifdef HAVE_MMX2
flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2;
#elif defined (HAVE_3DNOW)
@@ -2001,6 +2001,8 @@ SwsContext *sws_getContext(int srcW, int srcH, int srcFormat, int dstW, int dstH
flags |= SWS_CPU_CAPS_MMX;
#elif defined (HAVE_ALTIVEC)
flags |= SWS_CPU_CAPS_ALTIVEC;
+#elif defined (ARCH_BFIN)
+ flags |= SWS_CPU_CAPS_BFIN;
#endif
#endif /* RUNTIME_CPUDETECT */
if (clip_table[512] != 255) globalInit();
diff --git a/libswscale/swscale.h b/libswscale/swscale.h
index a86ef45348..adad02f5a5 100644
--- a/libswscale/swscale.h
+++ b/libswscale/swscale.h
@@ -74,6 +74,7 @@ extern "C" {
#define SWS_CPU_CAPS_MMX2 0x20000000
#define SWS_CPU_CAPS_3DNOW 0x40000000
#define SWS_CPU_CAPS_ALTIVEC 0x10000000
+#define SWS_CPU_CAPS_BFIN 0x01000000
#define SWS_MAX_REDUCE_CUTOFF 0.002
diff --git a/libswscale/swscale_internal.h b/libswscale/swscale_internal.h
index 2d766f4746..85062ca2dc 100644
--- a/libswscale/swscale_internal.h
+++ b/libswscale/swscale_internal.h
@@ -162,6 +162,22 @@ typedef struct SwsContext{
#endif
+
+#ifdef ARCH_BFIN
+ uint32_t oy __attribute__((aligned(4)));
+ uint32_t oc __attribute__((aligned(4)));
+ uint32_t zero __attribute__((aligned(4)));
+ uint32_t cy __attribute__((aligned(4)));
+ uint32_t crv __attribute__((aligned(4)));
+ uint32_t rmask __attribute__((aligned(4)));
+ uint32_t cbu __attribute__((aligned(4)));
+ uint32_t bmask __attribute__((aligned(4)));
+ uint32_t cgu __attribute__((aligned(4)));
+ uint32_t cgv __attribute__((aligned(4)));
+ uint32_t gmask __attribute__((aligned(4)));
+#endif
+
+
} SwsContext;
//FIXME check init (where 0)
diff --git a/libswscale/yuv2rgb.c b/libswscale/yuv2rgb.c
index 98a3569d85..9f3f071213 100644
--- a/libswscale/yuv2rgb.c
+++ b/libswscale/yuv2rgb.c
@@ -611,6 +611,14 @@ SwsFunc yuv2rgb_get_func_ptr (SwsContext *c)
}
#endif
+#ifdef ARCH_BFIN
+ if (c->flags & SWS_CPU_CAPS_BFIN)
+ {
+ SwsFunc t = ff_bfin_yuv2rgb_get_func_ptr (c);
+ if (t) return t;
+ }
+#endif
+
av_log(c, AV_LOG_WARNING, "No accelerated colorspace conversion found\n");
switch(c->dstFormat){
diff --git a/libswscale/yuv2rgb_bfin.c b/libswscale/yuv2rgb_bfin.c
new file mode 100644
index 0000000000..98c86c06f9
--- /dev/null
+++ b/libswscale/yuv2rgb_bfin.c
@@ -0,0 +1,205 @@
+/*
+ * Copyright (C) 2007 Marc Hoffman <marc.hoffman@analog.com>
+ * April 20, 2007
+ *
+ * Blackfin Video Color Space Converters Operations
+ * convert I420 YV12 to RGB in various formats,
+ *
+ * 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 <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 <unistd.h>
+#include <bits/bfin_sram.h>
+#include "rgb2rgb.h"
+#include "swscale.h"
+#include "swscale_internal.h"
+
+
+#define L1CODE __attribute__ ((l1_text))
+
+extern void ff_bfin_yuv2rgb555_line (uint8_t *Y, uint8_t *U, uint8_t *V, uint8_t *out,
+ int w, uint32_t *coeffs) L1CODE;
+
+extern void ff_bfin_yuv2rgb565_line (uint8_t *Y, uint8_t *U, uint8_t *V, uint8_t *out,
+ int w, uint32_t *coeffs) L1CODE;
+
+extern void ff_bfin_yuv2rgb24_line (uint8_t *Y, uint8_t *U, uint8_t *V, uint8_t *out,
+ int w, uint32_t *coeffs) L1CODE;
+
+typedef void (* ltransform_t)(uint8_t *Y, uint8_t *U, uint8_t *V, uint8_t *out,
+ int w, uint32_t *coeffs);
+
+
+static void bfin_prepare_coefficients (SwsContext *c, int rgb, int masks)
+{
+ int oy;
+ oy = c->yOffset&0xffff;
+ oy = oy >> 3; // keep everything U8.0 for offset calculation
+
+ c->oc = 128*0x01010101U;
+ c->oy = oy*0x01010101U;
+
+ /* copy 64bit vector coeffs down to 32bit vector coeffs */
+ c->cy = c->yCoeff;
+ c->zero = 0;
+
+ if (rgb) {
+ c->crv = c->vrCoeff;
+ c->cbu = c->ubCoeff;
+ c->cgu = c->ugCoeff;
+ c->cgv = c->vgCoeff;
+ } else {
+ c->crv = c->ubCoeff;
+ c->cbu = c->vrCoeff;
+ c->cgu = c->vgCoeff;
+ c->cgv = c->ugCoeff;
+ }
+
+
+ if (masks == 555) {
+ c->rmask = 0x001f * 0x00010001U;
+ c->gmask = 0x03e0 * 0x00010001U;
+ c->bmask = 0x7c00 * 0x00010001U;
+ } else if (masks == 565) {
+ c->rmask = 0x001f * 0x00010001U;
+ c->gmask = 0x07e0 * 0x00010001U;
+ c->bmask = 0xf800 * 0x00010001U;
+ }
+}
+
+static int core_yuv420_rgb (SwsContext *c,
+ uint8_t **in, int *instrides,
+ int srcSliceY, int srcSliceH,
+ uint8_t **oplanes, int *outstrides,
+ ltransform_t lcscf, int rgb, int masks)
+{
+ uint8_t *py,*pu,*pv,*op;
+ int w = instrides[0];
+ int h2 = srcSliceH>>1;
+ int i;
+
+ bfin_prepare_coefficients (c, rgb, masks);
+
+ py = in[0];
+ pu = in[1+(1^rgb)];
+ pv = in[1+(0^rgb)];
+
+ op = oplanes[0] + srcSliceY*outstrides[0];
+
+ for (i=0;i<h2;i++) {
+
+ lcscf (py,pu,pv,op,w,&c->oy);
+
+ py += instrides[0];
+ op += outstrides[0];
+
+ lcscf (py,pu,pv,op,w,&c->oy);
+
+ py += instrides[0];
+ pu += instrides[1];
+ pv += instrides[2];
+ op += outstrides[0];
+ }
+
+ return srcSliceH;
+}
+
+
+static int bfin_yuv420_rgb555 (SwsContext *c,
+ uint8_t **in, int *instrides,
+ int srcSliceY, int srcSliceH,
+ uint8_t **oplanes, int *outstrides)
+{
+ return core_yuv420_rgb (c,in,instrides,srcSliceY,srcSliceH,oplanes,outstrides,
+ ff_bfin_yuv2rgb555_line, 1, 555);
+}
+
+static int bfin_yuv420_bgr555 (SwsContext *c,
+ uint8_t **in, int *instrides,
+ int srcSliceY, int srcSliceH,
+ uint8_t **oplanes, int *outstrides)
+{
+ return core_yuv420_rgb (c,in,instrides,srcSliceY,srcSliceH,oplanes,outstrides,
+ ff_bfin_yuv2rgb555_line, 0, 555);
+}
+
+static int bfin_yuv420_rgb24 (SwsContext *c,
+ uint8_t **in, int *instrides,
+ int srcSliceY, int srcSliceH,
+ uint8_t **oplanes, int *outstrides)
+{
+ return core_yuv420_rgb (c,in,instrides,srcSliceY,srcSliceH,oplanes,outstrides,
+ ff_bfin_yuv2rgb24_line, 1, 888);
+}
+
+static int bfin_yuv420_bgr24 (SwsContext *c,
+ uint8_t **in, int *instrides,
+ int srcSliceY, int srcSliceH,
+ uint8_t **oplanes, int *outstrides)
+{
+ return core_yuv420_rgb (c,in,instrides,srcSliceY,srcSliceH,oplanes,outstrides,
+ ff_bfin_yuv2rgb24_line, 0, 888);
+}
+
+static int bfin_yuv420_rgb565 (SwsContext *c,
+ uint8_t **in, int *instrides,
+ int srcSliceY, int srcSliceH,
+ uint8_t **oplanes, int *outstrides)
+{
+ return core_yuv420_rgb (c,in,instrides,srcSliceY,srcSliceH,oplanes,outstrides,
+ ff_bfin_yuv2rgb565_line, 1, 565);
+}
+
+static int bfin_yuv420_bgr565 (SwsContext *c,
+ uint8_t **in, int *instrides,
+ int srcSliceY, int srcSliceH,
+ uint8_t **oplanes, int *outstrides)
+{
+ return core_yuv420_rgb (c,in,instrides,srcSliceY,srcSliceH,oplanes,outstrides,
+ ff_bfin_yuv2rgb565_line, 0, 565);
+}
+
+
+SwsFunc ff_bfin_yuv2rgb_get_func_ptr (SwsContext *c)
+{
+ SwsFunc f;
+
+ switch(c->dstFormat) {
+ case PIX_FMT_RGB555: f = bfin_yuv420_rgb555; break;
+ case PIX_FMT_BGR555: f = bfin_yuv420_bgr555; break;
+ case PIX_FMT_RGB565: f = bfin_yuv420_rgb565; break;
+ case PIX_FMT_BGR565: f = bfin_yuv420_bgr565; break;
+ case PIX_FMT_RGB24: f = bfin_yuv420_rgb24; break;
+ case PIX_FMT_BGR24: f = bfin_yuv420_bgr24; break;
+ default:
+ return 0;
+ }
+
+ av_log(c, AV_LOG_INFO, "BlackFin Accelerated Color Space Converter %s\n",
+ sws_format_name (c->dstFormat));
+
+ return f;
+}