falkTX
/
FFmpeg
mirror of https://github.com/falkTX/FFmpeg.git
1
0
Fork 0
Code Issues 0 Releases 338 Wiki Activity
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
34093 Commits
32 Branches
698MB
Tree: 5ed032fb8b
Branches Tags
${ item.name }
Create branch ${ searchTerm }
from '5ed032fb8b'
${ noResults }
FFmpeg/libswscale/ppc/yuv2rgb_altivec.c

856 lines
38KB
Raw Blame History 

  1. /*

  2.  * AltiVec acceleration for colorspace conversion

  3.  *

  4.  * copyright (C) 2004 Marc Hoffman <marc.hoffman@analog.com>

  5.  *

  6.  * This file is part of Libav.

  7.  *

  8.  * Libav 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.  * Libav 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 Libav; 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 <stdio.h>

  89. #include <stdlib.h>

  90. #include <string.h>

  91. #include <inttypes.h>

  92. #include <assert.h>

  93. 

  94. #include "config.h"

  95. #include "libswscale/rgb2rgb.h"

  96. #include "libswscale/swscale.h"

  97. #include "libswscale/swscale_internal.h"

  98. #include "libavutil/cpu.h"

  99. #include "yuv2rgb_altivec.h"

  100. 

  101. #undef PROFILE_THE_BEAST

  102. #undef INC_SCALING

  103. 

  104. typedef unsigned char ubyte;

  105. typedef signed char   sbyte;

  106. 

  107. /* RGB interleaver, 16 planar pels 8-bit samples per channel in

  108.  * homogeneous vector registers x0,x1,x2 are interleaved with the

  109.  * following technique:

  110.  *

  111.  *    o0 = vec_mergeh(x0, x1);

  112.  *    o1 = vec_perm(o0, x2, perm_rgb_0);

  113.  *    o2 = vec_perm(o0, x2, perm_rgb_1);

  114.  *    o3 = vec_mergel(x0, x1);

  115.  *    o4 = vec_perm(o3, o2, perm_rgb_2);

  116.  *    o5 = vec_perm(o3, o2, perm_rgb_3);

  117.  *

  118.  * perm_rgb_0:   o0(RG).h v1(B) --> o1*

  119.  *            0   1  2   3   4

  120.  *           rgbr|gbrg|brgb|rgbr

  121.  *           0010 0100 1001 0010

  122.  *           0102 3145 2673 894A

  123.  *

  124.  * perm_rgb_1:   o0(RG).h v1(B) --> o2

  125.  *            0   1  2   3   4

  126.  *           gbrg|brgb|bbbb|bbbb

  127.  *           0100 1001 1111 1111

  128.  *           B5CD 6EF7 89AB CDEF

  129.  *

  130.  * perm_rgb_2:   o3(RG).l o2(rgbB.l) --> o4*

  131.  *            0   1  2   3   4

  132.  *           gbrg|brgb|rgbr|gbrg

  133.  *           1111 1111 0010 0100

  134.  *           89AB CDEF 0182 3945

  135.  *

  136.  * perm_rgb_2:   o3(RG).l o2(rgbB.l) ---> o5*

  137.  *            0   1  2   3   4

  138.  *           brgb|rgbr|gbrg|brgb

  139.  *           1001 0010 0100 1001

  140.  *           a67b 89cA BdCD eEFf

  141.  *

  142.  */

  143. static const vector unsigned char

  144.     perm_rgb_0 = { 0x00, 0x01, 0x10, 0x02, 0x03, 0x11, 0x04, 0x05,

  145.                    0x12, 0x06, 0x07, 0x13, 0x08, 0x09, 0x14, 0x0a },

  146.     perm_rgb_1 = { 0x0b, 0x15, 0x0c, 0x0d, 0x16, 0x0e, 0x0f, 0x17,

  147.                    0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f },

  148.     perm_rgb_2 = { 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,

  149.                    0x00, 0x01, 0x18, 0x02, 0x03, 0x19, 0x04, 0x05 },

  150.     perm_rgb_3 = { 0x1a, 0x06, 0x07, 0x1b, 0x08, 0x09, 0x1c, 0x0a,

  151.                    0x0b, 0x1d, 0x0c, 0x0d, 0x1e, 0x0e, 0x0f, 0x1f };

  152. 

  153. #define vec_merge3(x2, x1, x0, y0, y1, y2)     \

  154.     do {                                       \

  155.         __typeof__(x0) o0, o2, o3;             \

  156.         o0 = vec_mergeh(x0, x1);               \

  157.         y0 = vec_perm(o0, x2, perm_rgb_0);     \

  158.         o2 = vec_perm(o0, x2, perm_rgb_1);     \

  159.         o3 = vec_mergel(x0, x1);               \

  160.         y1 = vec_perm(o3, o2, perm_rgb_2);     \

  161.         y2 = vec_perm(o3, o2, perm_rgb_3);     \

  162.     } while (0)

  163. 

  164. #define vec_mstbgr24(x0, x1, x2, ptr)          \

  165.     do {                                       \

  166.         __typeof__(x0) _0, _1, _2;             \

  167.         vec_merge3(x0, x1, x2, _0, _1, _2);    \

  168.         vec_st(_0, 0, ptr++);                  \

  169.         vec_st(_1, 0, ptr++);                  \

  170.         vec_st(_2, 0, ptr++);                  \

  171.     } while (0)

  172. 

  173. #define vec_mstrgb24(x0, x1, x2, ptr)          \

  174.     do {                                       \

  175.         __typeof__(x0) _0, _1, _2;             \

  176.         vec_merge3(x2, x1, x0, _0, _1, _2);    \

  177.         vec_st(_0, 0, ptr++);                  \

  178.         vec_st(_1, 0, ptr++);                  \

  179.         vec_st(_2, 0, ptr++);                  \

  180.     } while (0)

  181. 

  182. /* pack the pixels in rgb0 format

  183.  * msb R

  184.  * lsb 0

  185.  */

  186. #define vec_mstrgb32(T, x0, x1, x2, x3, ptr)                            \

  187.     do {                                                                \

  188.         T _0, _1, _2, _3;                                               \

  189.         _0 = vec_mergeh(x0, x1);                                        \

  190.         _1 = vec_mergeh(x2, x3);                                        \

  191.         _2 = (T) vec_mergeh((vector unsigned short) _0,                 \

  192.                             (vector unsigned short) _1);                \

  193.         _3 = (T) vec_mergel((vector unsigned short) _0,                 \

  194.                             (vector unsigned short) _1);                \

  195.         vec_st(_2, 0 * 16, (T *) ptr);                                  \

  196.         vec_st(_3, 1 * 16, (T *) ptr);                                  \

  197.         _0 = vec_mergel(x0, x1);                                        \

  198.         _1 = vec_mergel(x2, x3);                                        \

  199.         _2 = (T) vec_mergeh((vector unsigned short) _0,                 \

  200.                             (vector unsigned short) _1);                \

  201.         _3 = (T) vec_mergel((vector unsigned short) _0,                 \

  202.                             (vector unsigned short) _1);                \

  203.         vec_st(_2, 2 * 16, (T *) ptr);                                  \

  204.         vec_st(_3, 3 * 16, (T *) ptr);                                  \

  205.         ptr += 4;                                                       \

  206.     } while (0)

  207. 

  208. /*

  209.  * 1     0       1.4021   | | Y |

  210.  * 1    -0.3441 -0.7142   |x| Cb|

  211.  * 1     1.7718  0        | | Cr|

  212.  *

  213.  *

  214.  * Y:      [-128 127]

  215.  * Cb/Cr : [-128 127]

  216.  *

  217.  * typical YUV conversion works on Y: 0-255 this version has been

  218.  * optimized for JPEG decoding.

  219.  */

  220. 

  221. #define vec_unh(x)                                                      \

  222.     (vector signed short)                                               \

  223.         vec_perm(x, (__typeof__(x)) { 0 },                              \

  224.                  ((vector unsigned char) {                              \

  225.                      0x10, 0x00, 0x10, 0x01, 0x10, 0x02, 0x10, 0x03,    \

  226.                      0x10, 0x04, 0x10, 0x05, 0x10, 0x06, 0x10, 0x07 }))

  227. 

  228. #define vec_unl(x)                                                      \

  229.     (vector signed short)                                               \

  230.         vec_perm(x, (__typeof__(x)) { 0 },                              \

  231.                  ((vector unsigned char) {                              \

  232.                      0x10, 0x08, 0x10, 0x09, 0x10, 0x0A, 0x10, 0x0B,    \

  233.                      0x10, 0x0C, 0x10, 0x0D, 0x10, 0x0E, 0x10, 0x0F }))

  234. 

  235. #define vec_clip_s16(x)                                                 \

  236.     vec_max(vec_min(x, ((vector signed short) {                         \

  237.                     235, 235, 235, 235, 235, 235, 235, 235 })),         \

  238.             ((vector signed short) { 16, 16, 16, 16, 16, 16, 16, 16 }))

  239. 

  240. #define vec_packclp(x, y)                                               \

  241.     (vector unsigned char)                                              \

  242.         vec_packs((vector unsigned short)                               \

  243.                       vec_max(x, ((vector signed short) { 0 })),        \

  244.                   (vector unsigned short)                               \

  245.                       vec_max(y, ((vector signed short) { 0 })))

  246. 

  247. //#define out_pixels(a, b, c, ptr) vec_mstrgb32(__typeof__(a), ((__typeof__(a)) { 255 }), a, a, a, ptr)

  248. 

  249. static inline void cvtyuvtoRGB(SwsContext *c, vector signed short Y,

  250.                                vector signed short U, vector signed short V,

  251.                                vector signed short *R, vector signed short *G,

  252.                                vector signed short *B)

  253. {

  254.     vector signed short vx, ux, uvx;

  255. 

  256.     Y = vec_mradds(Y, c->CY, c->OY);

  257.     U = vec_sub(U, (vector signed short)

  258.                        vec_splat((vector signed short) { 128 }, 0));

  259.     V = vec_sub(V, (vector signed short)

  260.                        vec_splat((vector signed short) { 128 }, 0));

  261. 

  262.     // ux  = (CBU * (u << c->CSHIFT) + 0x4000) >> 15;

  263.     ux = vec_sl(U, c->CSHIFT);

  264.     *B = vec_mradds(ux, c->CBU, Y);

  265. 

  266.     // vx  = (CRV * (v << c->CSHIFT) + 0x4000) >> 15;

  267.     vx = vec_sl(V, c->CSHIFT);

  268.     *R = vec_mradds(vx, c->CRV, Y);

  269. 

  270.     // uvx = ((CGU * u) + (CGV * v)) >> 15;

  271.     uvx = vec_mradds(U, c->CGU, Y);

  272.     *G  = vec_mradds(V, c->CGV, uvx);

  273. }

  274. 

  275. /*

  276.  * ------------------------------------------------------------------------------

  277.  * CS converters

  278.  * ------------------------------------------------------------------------------

  279.  */

  280. 

  281. #define DEFCSP420_CVT(name, out_pixels)                                       \

  282. static int altivec_ ## name(SwsContext *c, const unsigned char **in,          \

  283.                             int *instrides, int srcSliceY, int srcSliceH,     \

  284.                             unsigned char **oplanes, int *outstrides)         \

  285. {                                                                             \

  286.     int w = c->srcW;                                                          \

  287.     int h = srcSliceH;                                                        \

  288.     int i, j;                                                                 \

  289.     int instrides_scl[3];                                                     \

  290.     vector unsigned char y0, y1;                                              \

  291.                                                                               \

  292.     vector signed char u, v;                                                  \

  293.                                                                               \

  294.     vector signed short Y0, Y1, Y2, Y3;                                       \

  295.     vector signed short U, V;                                                 \

  296.     vector signed short vx, ux, uvx;                                          \

  297.     vector signed short vx0, ux0, uvx0;                                       \

  298.     vector signed short vx1, ux1, uvx1;                                       \

  299.     vector signed short R0, G0, B0;                                           \

  300.     vector signed short R1, G1, B1;                                           \

  301.     vector unsigned char R, G, B;                                             \

  302.                                                                               \

  303.     const vector unsigned char *y1ivP, *y2ivP, *uivP, *vivP;                  \

  304.     vector unsigned char align_perm;                                          \

  305.                                                                               \

  306.     vector signed short lCY       = c->CY;                                    \

  307.     vector signed short lOY       = c->OY;                                    \

  308.     vector signed short lCRV      = c->CRV;                                   \

  309.     vector signed short lCBU      = c->CBU;                                   \

  310.     vector signed short lCGU      = c->CGU;                                   \

  311.     vector signed short lCGV      = c->CGV;                                   \

  312.     vector unsigned short lCSHIFT = c->CSHIFT;                                \

  313.                                                                               \

  314.     const ubyte *y1i = in[0];                                                 \

  315.     const ubyte *y2i = in[0] + instrides[0];                                  \

  316.     const ubyte *ui  = in[1];                                                 \

  317.     const ubyte *vi  = in[2];                                                 \

  318.                                                                               \

  319.     vector unsigned char *oute =                                              \

  320.         (vector unsigned char *)                                              \

  321.             (oplanes[0] + srcSliceY * outstrides[0]);                         \

  322.     vector unsigned char *outo =                                              \

  323.         (vector unsigned char *)                                              \

  324.             (oplanes[0] + srcSliceY * outstrides[0] + outstrides[0]);         \

  325.                                                                               \

  326.     /* loop moves y{1, 2}i by w */                                            \

  327.     instrides_scl[0] = instrides[0] * 2 - w;                                  \

  328.     /* loop moves ui by w / 2 */                                              \

  329.     instrides_scl[1] = instrides[1] - w / 2;                                  \

  330.     /* loop moves vi by w / 2 */                                              \

  331.     instrides_scl[2] = instrides[2] - w / 2;                                  \

  332.                                                                               \

  333.     for (i = 0; i < h / 2; i++) {                                             \

  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.         outo += (outstrides[0]) >> 4;                                         \

  432.         oute += (outstrides[0]) >> 4;                                         \

  433.                                                                               \

  434.         ui  += instrides_scl[1];                                              \

  435.         vi  += instrides_scl[2];                                              \

  436.         y1i += instrides_scl[0];                                              \

  437.         y2i += instrides_scl[0];                                              \

  438.     }                                                                         \

  439.     return srcSliceH;                                                         \

  440. }

  441. 

  442. #define out_abgr(a, b, c, ptr)                                          \

  443.     vec_mstrgb32(__typeof__(a), ((__typeof__(a)) { 255 }), c, b, a, ptr)

  444. #define out_bgra(a, b, c, ptr)                                          \

  445.     vec_mstrgb32(__typeof__(a), c, b, a, ((__typeof__(a)) { 255 }), ptr)

  446. #define out_rgba(a, b, c, ptr)                                          \

  447.     vec_mstrgb32(__typeof__(a), a, b, c, ((__typeof__(a)) { 255 }), ptr)

  448. #define out_argb(a, b, c, ptr)                                          \

  449.     vec_mstrgb32(__typeof__(a), ((__typeof__(a)) { 255 }), a, b, c, ptr)

  450. #define out_rgb24(a, b, c, ptr) vec_mstrgb24(a, b, c, ptr)

  451. #define out_bgr24(a, b, c, ptr) vec_mstbgr24(a, b, c, ptr)

  452. 

  453. DEFCSP420_CVT(yuv2_abgr,  out_abgr)

  454. DEFCSP420_CVT(yuv2_bgra,  out_bgra)

  455. DEFCSP420_CVT(yuv2_rgba,  out_rgba)

  456. DEFCSP420_CVT(yuv2_argb,  out_argb)

  457. DEFCSP420_CVT(yuv2_rgb24, out_rgb24)

  458. DEFCSP420_CVT(yuv2_bgr24, out_bgr24)

  459. 

  460. // uyvy|uyvy|uyvy|uyvy

  461. // 0123 4567 89ab cdef

  462. static const vector unsigned char

  463.     demux_u = { 0x10, 0x00, 0x10, 0x00,

  464.                 0x10, 0x04, 0x10, 0x04,

  465.                 0x10, 0x08, 0x10, 0x08,

  466.                 0x10, 0x0c, 0x10, 0x0c },

  467.     demux_v = { 0x10, 0x02, 0x10, 0x02,

  468.                 0x10, 0x06, 0x10, 0x06,

  469.                 0x10, 0x0A, 0x10, 0x0A,

  470.                 0x10, 0x0E, 0x10, 0x0E },

  471.     demux_y = { 0x10, 0x01, 0x10, 0x03,

  472.                 0x10, 0x05, 0x10, 0x07,

  473.                 0x10, 0x09, 0x10, 0x0B,

  474.                 0x10, 0x0D, 0x10, 0x0F };

  475. 

  476. /*

  477.  * this is so I can play live CCIR raw video

  478.  */

  479. static int altivec_uyvy_rgb32(SwsContext *c, const unsigned char **in,

  480.                               int *instrides, int srcSliceY, int srcSliceH,

  481.                               unsigned char **oplanes, int *outstrides)

  482. {

  483.     int w = c->srcW;

  484.     int h = srcSliceH;

  485.     int i, j;

  486.     vector unsigned char uyvy;

  487.     vector signed short Y, U, V;

  488.     vector signed short R0, G0, B0, R1, G1, B1;

  489.     vector unsigned char R, G, B;

  490.     vector unsigned char *out;

  491.     const ubyte *img;

  492. 

  493.     img = in[0];

  494.     out = (vector unsigned char *) (oplanes[0] + srcSliceY * outstrides[0]);

  495. 

  496.     for (i = 0; i < h; i++)

  497.         for (j = 0; j < w / 16; j++) {

  498.             uyvy = vec_ld(0, img);

  499. 

  500.             U = (vector signed short)

  501.                     vec_perm(uyvy, (vector unsigned char) { 0 }, demux_u);

  502.             V = (vector signed short)

  503.                     vec_perm(uyvy, (vector unsigned char) { 0 }, demux_v);

  504.             Y = (vector signed short)

  505.                     vec_perm(uyvy, (vector unsigned char) { 0 }, demux_y);

  506. 

  507.             cvtyuvtoRGB(c, Y, U, V, &R0, &G0, &B0);

  508. 

  509.             uyvy = vec_ld(16, img);

  510. 

  511.             U = (vector signed short)

  512.                     vec_perm(uyvy, (vector unsigned char) { 0 }, demux_u);

  513.             V = (vector signed short)

  514.                     vec_perm(uyvy, (vector unsigned char) { 0 }, demux_v);

  515.             Y = (vector signed short)

  516.                     vec_perm(uyvy, (vector unsigned char) { 0 }, demux_y);

  517. 

  518.             cvtyuvtoRGB(c, Y, U, V, &R1, &G1, &B1);

  519. 

  520.             R = vec_packclp(R0, R1);

  521.             G = vec_packclp(G0, G1);

  522.             B = vec_packclp(B0, B1);

  523. 

  524.             // vec_mstbgr24 (R,G,B, out);

  525.             out_rgba(R, G, B, out);

  526. 

  527.             img += 32;

  528.         }

  529.     return srcSliceH;

  530. }

  531. 

  532. /* Ok currently the acceleration routine only supports

  533.  * inputs of widths a multiple of 16

  534.  * and heights a multiple 2

  535.  *

  536.  * So we just fall back to the C codes for this.

  537.  */

  538. SwsFunc ff_yuv2rgb_init_altivec(SwsContext *c)

  539. {

  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 PIX_FMT_YUV410P:

  555.     case PIX_FMT_YUV420P:

  556.     /*case IMGFMT_CLPL:        ??? */

  557.     case PIX_FMT_GRAY8:

  558.     case PIX_FMT_NV12:

  559.     case PIX_FMT_NV21:

  560.         if ((c->srcH & 0x1) != 0)

  561.             return NULL;

  562. 

  563.         switch (c->dstFormat) {

  564.         case PIX_FMT_RGB24:

  565.             av_log(c, AV_LOG_WARNING, "ALTIVEC: Color Space RGB24\n");

  566.             return altivec_yuv2_rgb24;

  567.         case PIX_FMT_BGR24:

  568.             av_log(c, AV_LOG_WARNING, "ALTIVEC: Color Space BGR24\n");

  569.             return altivec_yuv2_bgr24;

  570.         case PIX_FMT_ARGB:

  571.             av_log(c, AV_LOG_WARNING, "ALTIVEC: Color Space ARGB\n");

  572.             return altivec_yuv2_argb;

  573.         case PIX_FMT_ABGR:

  574.             av_log(c, AV_LOG_WARNING, "ALTIVEC: Color Space ABGR\n");

  575.             return altivec_yuv2_abgr;

  576.         case PIX_FMT_RGBA:

  577.             av_log(c, AV_LOG_WARNING, "ALTIVEC: Color Space RGBA\n");

  578.             return altivec_yuv2_rgba;

  579.         case 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 PIX_FMT_UYVY422:

  587.         switch (c->dstFormat) {

  588.         case 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.     return NULL;

  596. }

  597. 

  598. void ff_yuv2rgb_init_tables_altivec(SwsContext *c, const int inv_table[4],

  599.                                     int brightness, int contrast,

  600.                                     int saturation)

  601. {

  602.     union {

  603.         DECLARE_ALIGNED(16, signed short, tmp)[8];

  604.         vector signed short vec;

  605.     } buf;

  606. 

  607.     buf.tmp[0] = ((0xffffLL) * contrast >> 8) >> 9;                               // cy

  608.     buf.tmp[1] = -256 * brightness;                                               // oy

  609.     buf.tmp[2] =   (inv_table[0] >> 3) * (contrast >> 16) * (saturation >> 16);   // crv

  610.     buf.tmp[3] =   (inv_table[1] >> 3) * (contrast >> 16) * (saturation >> 16);   // cbu

  611.     buf.tmp[4] = -((inv_table[2] >> 1) * (contrast >> 16) * (saturation >> 16));  // cgu

  612.     buf.tmp[5] = -((inv_table[3] >> 1) * (contrast >> 16) * (saturation >> 16));  // cgv

  613. 

  614.     c->CSHIFT = (vector unsigned short) vec_splat_u16(2);

  615.     c->CY     = vec_splat((vector signed short) buf.vec, 0);

  616.     c->OY     = vec_splat((vector signed short) buf.vec, 1);

  617.     c->CRV    = vec_splat((vector signed short) buf.vec, 2);

  618.     c->CBU    = vec_splat((vector signed short) buf.vec, 3);

  619.     c->CGU    = vec_splat((vector signed short) buf.vec, 4);

  620.     c->CGV    = vec_splat((vector signed short) buf.vec, 5);

  621.     return;

  622. }

  623. 

  624. static av_always_inline void ff_yuv2packedX_altivec(SwsContext *c,

  625.                                                     const int16_t *lumFilter,

  626.                                                     const int16_t **lumSrc,

  627.                                                     int lumFilterSize,

  628.                                                     const int16_t *chrFilter,

  629.                                                     const int16_t **chrUSrc,

  630.                                                     const int16_t **chrVSrc,

  631.                                                     int chrFilterSize,

  632.                                                     const int16_t **alpSrc,

  633.                                                     uint8_t *dest,

  634.                                                     int dstW, int dstY,

  635.                                                     enum PixelFormat target)

  636. {

  637.     int i, j;

  638.     vector signed short X, X0, X1, Y0, U0, V0, Y1, U1, V1, U, V;

  639.     vector signed short R0, G0, B0, R1, G1, B1;

  640. 

  641.     vector unsigned char R, G, B;

  642.     vector unsigned char *out, *nout;

  643. 

  644.     vector signed short RND   = vec_splat_s16(1 << 3);

  645.     vector unsigned short SCL = vec_splat_u16(4);

  646.     DECLARE_ALIGNED(16, unsigned int, scratch)[16];

  647. 

  648.     vector signed short *YCoeffs, *CCoeffs;

  649. 

  650.     YCoeffs = c->vYCoeffsBank + dstY * lumFilterSize;

  651.     CCoeffs = c->vCCoeffsBank + dstY * chrFilterSize;

  652. 

  653.     out = (vector unsigned char *) dest;

  654. 

  655.     for (i = 0; i < dstW; i += 16) {

  656.         Y0 = RND;

  657.         Y1 = RND;

  658.         /* extract 16 coeffs from lumSrc */

  659.         for (j = 0; j < lumFilterSize; j++) {

  660.             X0 = vec_ld(0, &lumSrc[j][i]);

  661.             X1 = vec_ld(16, &lumSrc[j][i]);

  662.             Y0 = vec_mradds(X0, YCoeffs[j], Y0);

  663.             Y1 = vec_mradds(X1, YCoeffs[j], Y1);

  664.         }

  665. 

  666.         U = RND;

  667.         V = RND;

  668.         /* extract 8 coeffs from U,V */

  669.         for (j = 0; j < chrFilterSize; j++) {

  670.             X = vec_ld(0, &chrUSrc[j][i / 2]);

  671.             U = vec_mradds(X, CCoeffs[j], U);

  672.             X = vec_ld(0, &chrVSrc[j][i / 2]);

  673.             V = vec_mradds(X, CCoeffs[j], V);

  674.         }

  675. 

  676.         /* scale and clip signals */

  677.         Y0 = vec_sra(Y0, SCL);

  678.         Y1 = vec_sra(Y1, SCL);

  679.         U  = vec_sra(U, SCL);

  680.         V  = vec_sra(V, SCL);

  681. 

  682.         Y0 = vec_clip_s16(Y0);

  683.         Y1 = vec_clip_s16(Y1);

  684.         U  = vec_clip_s16(U);

  685.         V  = vec_clip_s16(V);

  686. 

  687.         /* now we have

  688.          * Y0 = y0 y1 y2 y3 y4 y5 y6 y7    Y1 = y8 y9 y10 y11 y12 y13 y14 y15

  689.          * U  = u0 u1 u2 u3 u4 u5 u6 u7    V  = v0 v1 v2 v3 v4 v5 v6 v7

  690.          *

  691.          * Y0 = y0 y1 y2 y3 y4 y5 y6 y7    Y1 = y8 y9 y10 y11 y12 y13 y14 y15

  692.          * U0 = u0 u0 u1 u1 u2 u2 u3 u3    U1 = u4 u4 u5 u5 u6 u6 u7 u7

  693.          * V0 = v0 v0 v1 v1 v2 v2 v3 v3    V1 = v4 v4 v5 v5 v6 v6 v7 v7

  694.          */

  695. 

  696.         U0 = vec_mergeh(U, U);

  697.         V0 = vec_mergeh(V, V);

  698. 

  699.         U1 = vec_mergel(U, U);

  700.         V1 = vec_mergel(V, V);

  701. 

  702.         cvtyuvtoRGB(c, Y0, U0, V0, &R0, &G0, &B0);

  703.         cvtyuvtoRGB(c, Y1, U1, V1, &R1, &G1, &B1);

  704. 

  705.         R = vec_packclp(R0, R1);

  706.         G = vec_packclp(G0, G1);

  707.         B = vec_packclp(B0, B1);

  708. 

  709.         switch (target) {

  710.         case PIX_FMT_ABGR:

  711.             out_abgr(R, G, B, out);

  712.             break;

  713.         case PIX_FMT_BGRA:

  714.             out_bgra(R, G, B, out);

  715.             break;

  716.         case PIX_FMT_RGBA:

  717.             out_rgba(R, G, B, out);

  718.             break;

  719.         case PIX_FMT_ARGB:

  720.             out_argb(R, G, B, out);

  721.             break;

  722.         case PIX_FMT_RGB24:

  723.             out_rgb24(R, G, B, out);

  724.             break;

  725.         case PIX_FMT_BGR24:

  726.             out_bgr24(R, G, B, out);

  727.             break;

  728.         default:

  729.         {

  730.             /* If this is reached, the caller should have called yuv2packedXinC

  731.              * instead. */

  732.             static int printed_error_message;

  733.             if (!printed_error_message) {

  734.                 av_log(c, AV_LOG_ERROR,

  735.                        "altivec_yuv2packedX doesn't support %s output\n",

  736.                        sws_format_name(c->dstFormat));

  737.                 printed_error_message = 1;

  738.             }

  739.             return;

  740.         }

  741.         }

  742.     }

  743. 

  744.     if (i < dstW) {

  745.         i -= 16;

  746. 

  747.         Y0 = RND;

  748.         Y1 = RND;

  749.         /* extract 16 coeffs from lumSrc */

  750.         for (j = 0; j < lumFilterSize; j++) {

  751.             X0 = vec_ld(0, &lumSrc[j][i]);

  752.             X1 = vec_ld(16, &lumSrc[j][i]);

  753.             Y0 = vec_mradds(X0, YCoeffs[j], Y0);

  754.             Y1 = vec_mradds(X1, YCoeffs[j], Y1);

  755.         }

  756. 

  757.         U = RND;

  758.         V = RND;

  759.         /* extract 8 coeffs from U,V */

  760.         for (j = 0; j < chrFilterSize; j++) {

  761.             X = vec_ld(0, &chrUSrc[j][i / 2]);

  762.             U = vec_mradds(X, CCoeffs[j], U);

  763.             X = vec_ld(0, &chrVSrc[j][i / 2]);

  764.             V = vec_mradds(X, CCoeffs[j], V);

  765.         }

  766. 

  767.         /* scale and clip signals */

  768.         Y0 = vec_sra(Y0, SCL);

  769.         Y1 = vec_sra(Y1, SCL);

  770.         U  = vec_sra(U, SCL);

  771.         V  = vec_sra(V, SCL);

  772. 

  773.         Y0 = vec_clip_s16(Y0);

  774.         Y1 = vec_clip_s16(Y1);

  775.         U  = vec_clip_s16(U);

  776.         V  = vec_clip_s16(V);

  777. 

  778.         /* now we have

  779.          * Y0 = y0 y1 y2 y3 y4 y5 y6 y7    Y1 = y8 y9 y10 y11 y12 y13 y14 y15

  780.          * U  = u0 u1 u2 u3 u4 u5 u6 u7    V  = v0 v1 v2 v3 v4 v5 v6 v7

  781.          *

  782.          * Y0 = y0 y1 y2 y3 y4 y5 y6 y7    Y1 = y8 y9 y10 y11 y12 y13 y14 y15

  783.          * U0 = u0 u0 u1 u1 u2 u2 u3 u3    U1 = u4 u4 u5 u5 u6 u6 u7 u7

  784.          * V0 = v0 v0 v1 v1 v2 v2 v3 v3    V1 = v4 v4 v5 v5 v6 v6 v7 v7

  785.          */

  786. 

  787.         U0 = vec_mergeh(U, U);

  788.         V0 = vec_mergeh(V, V);

  789. 

  790.         U1 = vec_mergel(U, U);

  791.         V1 = vec_mergel(V, V);

  792. 

  793.         cvtyuvtoRGB(c, Y0, U0, V0, &R0, &G0, &B0);

  794.         cvtyuvtoRGB(c, Y1, U1, V1, &R1, &G1, &B1);

  795. 

  796.         R = vec_packclp(R0, R1);

  797.         G = vec_packclp(G0, G1);

  798.         B = vec_packclp(B0, B1);

  799. 

  800.         nout = (vector unsigned char *) scratch;

  801.         switch (target) {

  802.         case PIX_FMT_ABGR:

  803.             out_abgr(R, G, B, nout);

  804.             break;

  805.         case PIX_FMT_BGRA:

  806.             out_bgra(R, G, B, nout);

  807.             break;

  808.         case PIX_FMT_RGBA:

  809.             out_rgba(R, G, B, nout);

  810.             break;

  811.         case PIX_FMT_ARGB:

  812.             out_argb(R, G, B, nout);

  813.             break;

  814.         case PIX_FMT_RGB24:

  815.             out_rgb24(R, G, B, nout);

  816.             break;

  817.         case PIX_FMT_BGR24:

  818.             out_bgr24(R, G, B, nout);

  819.             break;

  820.         default:

  821.             /* Unreachable, I think. */

  822.             av_log(c, AV_LOG_ERROR,

  823.                    "altivec_yuv2packedX doesn't support %s output\n",

  824.                    sws_format_name(c->dstFormat));

  825.             return;

  826.         }

  827. 

  828.         memcpy(&((uint32_t *) dest)[i], scratch, (dstW - i) / 4);

  829.     }

  830. }

  831. 

  832. #define YUV2PACKEDX_WRAPPER(suffix, pixfmt)                             \

  833. void ff_yuv2 ## suffix ## _X_altivec(SwsContext *c,                     \

  834.                                      const int16_t *lumFilter,          \

  835.                                      const int16_t **lumSrc,            \

  836.                                      int lumFilterSize,                 \

  837.                                      const int16_t *chrFilter,          \

  838.                                      const int16_t **chrUSrc,           \

  839.                                      const int16_t **chrVSrc,           \

  840.                                      int chrFilterSize,                 \

  841.                                      const int16_t **alpSrc,            \

  842.                                      uint8_t *dest, int dstW, int dstY) \

  843. {                                                                       \

  844.     ff_yuv2packedX_altivec(c, lumFilter, lumSrc, lumFilterSize,         \

  845.                            chrFilter, chrUSrc, chrVSrc,                 \

  846.                            chrFilterSize, alpSrc,                       \

  847.                            dest, dstW, dstY, pixfmt);                   \

  848. }

  849. 

  850. YUV2PACKEDX_WRAPPER(abgr,  PIX_FMT_ABGR);

  851. YUV2PACKEDX_WRAPPER(bgra,  PIX_FMT_BGRA);

  852. YUV2PACKEDX_WRAPPER(argb,  PIX_FMT_ARGB);

  853. YUV2PACKEDX_WRAPPER(rgba,  PIX_FMT_RGBA);

  854. YUV2PACKEDX_WRAPPER(rgb24, PIX_FMT_RGB24);

  855. YUV2PACKEDX_WRAPPER(bgr24, PIX_FMT_BGR24);