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-rw-r--r--libswscale/bfin/internal_bfin.S606
-rw-r--r--libswscale/bfin/swscale_bfin.c93
-rw-r--r--libswscale/bfin/yuv2rgb_bfin.c203
3 files changed, 902 insertions, 0 deletions
diff --git a/libswscale/bfin/internal_bfin.S b/libswscale/bfin/internal_bfin.S
new file mode 100644
index 0000000000..fb7bda7e12
--- /dev/null
+++ b/libswscale/bfin/internal_bfin.S
@@ -0,0 +1,606 @@
+/*
+ * Copyright (C) 2007 Marc Hoffman <marc.hoffman@analog.com>
+ * April 20, 2007
+ *
+ * Blackfin video color space converter 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 prescaled by a factor of 4 i.e. left-shifted to gain precision.
+
+
+New factorization to eliminate the truncation error which was
+occurring 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 subtraction.
+
+ 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 mL3 .text
+#ifdef __FDPIC__
+#define mL1 .l1.text
+#else
+#define mL1 mL3
+#endif
+#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(yuv2rgb24_line)
+
+
+
+#define ARG_vdst 20
+#define ARG_width 24
+#define ARG_height 28
+#define ARG_lumStride 32
+#define ARG_chromStride 36
+#define ARG_srcStride 40
+
+DEFUN(uyvytoyv12, mL3, (const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
+ long width, long height,
+ long lumStride, long chromStride, long srcStride)):
+ link 0;
+ [--sp] = (r7:4,p5:4);
+
+ p0 = r1; // Y top even
+
+ i2 = r2; // *u
+ r2 = [fp + ARG_vdst];
+ i3 = r2; // *v
+
+ r1 = [fp + ARG_srcStride];
+ r2 = r0 + r1;
+ r1 += -8; // i0,i1 is pre read need to correct
+ m0 = r1;
+
+ i0 = r0; // uyvy_T even
+ i1 = r2; // uyvy_B odd
+
+ p2 = [fp + ARG_lumStride];
+ p1 = p0 + p2; // Y bot odd
+
+ p5 = [fp + ARG_width];
+ p4 = [fp + ARG_height];
+ r0 = p5;
+ p4 = p4 >> 1;
+ p5 = p5 >> 2;
+
+ r2 = [fp + ARG_chromStride];
+ r0 = r0 >> 1;
+ r2 = r2 - r0;
+ m1 = r2;
+
+ /* I0,I1 - src input line pointers
+ * p0,p1 - luma output line pointers
+ * I2 - dstU
+ * I3 - dstV
+ */
+
+ lsetup (0f, 1f) lc1 = p4; // H/2
+0: r0 = [i0++] || r2 = [i1++];
+ r1 = [i0++] || r3 = [i1++];
+ r4 = byteop1p(r1:0, r3:2);
+ r5 = byteop1p(r1:0, r3:2) (r);
+ lsetup (2f, 3f) lc0 = p5; // W/4
+2: r0 = r0 >> 8(v);
+ r1 = r1 >> 8(v);
+ r2 = r2 >> 8(v);
+ r3 = r3 >> 8(v);
+ r0 = bytepack(r0, r1);
+ r2 = bytepack(r2, r3) || [p0++] = r0; // yyyy
+ r6 = pack(r5.l, r4.l) || [p1++] = r2; // yyyy
+ r7 = pack(r5.h, r4.h) || r0 = [i0++] || r2 = [i1++];
+ r6 = bytepack(r6, r7) || r1 = [i0++] || r3 = [i1++];
+ r4 = byteop1p(r1:0, r3:2) || w[i2++] = r6.l; // uu
+3: r5 = byteop1p(r1:0, r3:2) (r) || w[i3++] = r6.h; // vv
+
+ i0 += m0;
+ i1 += m0;
+ i2 += m1;
+ i3 += m1;
+ p0 = p0 + p2;
+1: p1 = p1 + p2;
+
+ (r7:4,p5:4) = [sp++];
+ unlink;
+ rts;
+DEFUN_END(uyvytoyv12)
+
+DEFUN(yuyvtoyv12, mL3, (const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
+ long width, long height,
+ long lumStride, long chromStride, long srcStride)):
+ link 0;
+ [--sp] = (r7:4,p5:4);
+
+ p0 = r1; // Y top even
+
+ i2 = r2; // *u
+ r2 = [fp + ARG_vdst];
+ i3 = r2; // *v
+
+ r1 = [fp + ARG_srcStride];
+ r2 = r0 + r1;
+ r1 += -8; // i0,i1 is pre read need to correct
+ m0 = r1;
+
+ i0 = r0; // uyvy_T even
+ i1 = r2; // uyvy_B odd
+
+ p2 = [fp + ARG_lumStride];
+ p1 = p0 + p2; // Y bot odd
+
+ p5 = [fp + ARG_width];
+ p4 = [fp + ARG_height];
+ r0 = p5;
+ p4 = p4 >> 1;
+ p5 = p5 >> 2;
+
+ r2 = [fp + ARG_chromStride];
+ r0 = r0 >> 1;
+ r2 = r2 - r0;
+ m1 = r2;
+
+ /* I0,I1 - src input line pointers
+ * p0,p1 - luma output line pointers
+ * I2 - dstU
+ * I3 - dstV
+ */
+
+ lsetup (0f, 1f) lc1 = p4; // H/2
+0: r0 = [i0++] || r2 = [i1++];
+ r1 = [i0++] || r3 = [i1++];
+ r4 = bytepack(r0, r1);
+ r5 = bytepack(r2, r3);
+ lsetup (2f, 3f) lc0 = p5; // W/4
+2: r0 = r0 >> 8(v) || [p0++] = r4; // yyyy-even
+ r1 = r1 >> 8(v) || [p1++] = r5; // yyyy-odd
+ r2 = r2 >> 8(v);
+ r3 = r3 >> 8(v);
+ r4 = byteop1p(r1:0, r3:2);
+ r5 = byteop1p(r1:0, r3:2) (r);
+ r6 = pack(r5.l, r4.l);
+ r7 = pack(r5.h, r4.h) || r0 = [i0++] || r2 = [i1++];
+ r6 = bytepack(r6, r7) || r1 = [i0++] || r3 = [i1++];
+ r4 = bytepack(r0, r1) || w[i2++] = r6.l; // uu
+3: r5 = bytepack(r2, r3) || w[i3++] = r6.h; // vv
+
+ i0 += m0;
+ i1 += m0;
+ i2 += m1;
+ i3 += m1;
+ p0 = p0 + p2;
+1: p1 = p1 + p2;
+
+ (r7:4,p5:4) = [sp++];
+ unlink;
+ rts;
+DEFUN_END(yuyvtoyv12)
diff --git a/libswscale/bfin/swscale_bfin.c b/libswscale/bfin/swscale_bfin.c
new file mode 100644
index 0000000000..2ad81d847d
--- /dev/null
+++ b/libswscale/bfin/swscale_bfin.c
@@ -0,0 +1,93 @@
+/*
+ * Copyright (C) 2007 Marc Hoffman <marc.hoffman@analog.com>
+ *
+ * Blackfin software video scaler operations
+ *
+ * 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"
+#include <unistd.h>
+#include "libswscale/rgb2rgb.h"
+#include "libswscale/swscale.h"
+#include "libswscale/swscale_internal.h"
+
+#ifdef __FDPIC__
+#define L1CODE __attribute__ ((l1_text))
+#else
+#define L1CODE
+#endif
+
+int ff_bfin_uyvytoyv12(const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
+ long width, long height,
+ long lumStride, long chromStride, long srcStride) L1CODE;
+
+int ff_bfin_yuyvtoyv12(const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
+ long width, long height,
+ long lumStride, long chromStride, long srcStride) L1CODE;
+
+static int uyvytoyv12_unscaled(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
+ int srcSliceH, uint8_t* dst[], int dstStride[])
+{
+ uint8_t *dsty = dst[0] + dstStride[0]*srcSliceY;
+ uint8_t *dstu = dst[1] + dstStride[1]*srcSliceY/2;
+ uint8_t *dstv = dst[2] + dstStride[2]*srcSliceY/2;
+ uint8_t *ip = src[0] + srcStride[0]*srcSliceY;
+ int w = dstStride[0];
+
+ ff_bfin_uyvytoyv12(ip, dsty, dstu, dstv, w, srcSliceH,
+ dstStride[0], dstStride[1], srcStride[0]);
+
+ return srcSliceH;
+}
+
+static int yuyvtoyv12_unscaled(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
+ int srcSliceH, uint8_t* dst[], int dstStride[])
+{
+ uint8_t *dsty = dst[0] + dstStride[0]*srcSliceY;
+ uint8_t *dstu = dst[1] + dstStride[1]*srcSliceY/2;
+ uint8_t *dstv = dst[2] + dstStride[2]*srcSliceY/2;
+ uint8_t *ip = src[0] + srcStride[0]*srcSliceY;
+ int w = dstStride[0];
+
+ ff_bfin_yuyvtoyv12(ip, dsty, dstu, dstv, w, srcSliceH,
+ dstStride[0], dstStride[1], srcStride[0]);
+
+ return srcSliceH;
+}
+
+
+void ff_bfin_get_unscaled_swscale(SwsContext *c)
+{
+ SwsFunc swScale = c->swScale;
+ if (c->flags & SWS_CPU_CAPS_BFIN)
+ if (c->dstFormat == PIX_FMT_YUV420P)
+ if (c->srcFormat == PIX_FMT_UYVY422) {
+ av_log (NULL, AV_LOG_VERBOSE, "selecting Blackfin optimized uyvytoyv12_unscaled\n");
+ c->swScale = uyvytoyv12_unscaled;
+ }
+ if (c->dstFormat == PIX_FMT_YUV420P)
+ if (c->srcFormat == PIX_FMT_YUYV422) {
+ av_log (NULL, AV_LOG_VERBOSE, "selecting Blackfin optimized yuyvtoyv12_unscaled\n");
+ c->swScale = yuyvtoyv12_unscaled;
+ }
+}
diff --git a/libswscale/bfin/yuv2rgb_bfin.c b/libswscale/bfin/yuv2rgb_bfin.c
new file mode 100644
index 0000000000..39e1ec87b5
--- /dev/null
+++ b/libswscale/bfin/yuv2rgb_bfin.c
@@ -0,0 +1,203 @@
+/*
+ * Copyright (C) 2007 Marc Hoffman <marc.hoffman@analog.com>
+ *
+ * Blackfin video color space converter 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"
+#include <unistd.h>
+#include "libswscale/rgb2rgb.h"
+#include "libswscale/swscale.h"
+#include "libswscale/swscale_internal.h"
+
+#ifdef __FDPIC__
+#define L1CODE __attribute__ ((l1_text))
+#else
+#define L1CODE
+#endif
+
+void ff_bfin_yuv2rgb555_line(uint8_t *Y, uint8_t *U, uint8_t *V, uint8_t *out,
+ int w, uint32_t *coeffs) L1CODE;
+
+void ff_bfin_yuv2rgb565_line(uint8_t *Y, uint8_t *U, uint8_t *V, uint8_t *out,
+ int w, uint32_t *coeffs) L1CODE;
+
+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)(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 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_yuv2rgb_get_func_ptr_bfin(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;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-03 00:35:42 +0000