Logo Search packages:      
Sourcecode: k9copy version File versions  Download package

rgb_mmx.cpp

/*
 * rgb_mmx.c
 * Copyright (C) 2000-2003 Silicon Integrated System Corp.
 * All Rights Reserved.
 *
 * Author: Olie Lho <ollie@sis.com.tw>
 *
 * This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
 * See http://libmpeg2.sourceforge.net/ for updates.
 *
 * mpeg2dec is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * mpeg2dec 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include "config.h"

#ifdef ARCH_X86

#include <stdio.h>
#include <stdlib.h>
#include <inttypes.h>

#include "mpeg2.h"
#include "mpeg2convert.h"
#include "convert_internal.h"
#include "attributes.h"
#include "mmx.h"

#define CPU_MMXEXT 0
#define CPU_MMX 1

/* CPU_MMXEXT/CPU_MMX adaptation layer */

#define movntq(src,dest)      \
do {                    \
    if (cpu == CPU_MMXEXT)    \
      movntq_r2m (src, dest); \
    else                \
      movq_r2m (src, dest);   \
} while (0)

static inline void mmx_yuv2rgb (uint8_t * py, uint8_t * pu, uint8_t * pv)
{
    static mmx_t mmx_80w = {0x0080008000800080LL};
    static mmx_t mmx_U_green = {0xf37df37df37df37dLL};
    static mmx_t mmx_U_blue = {0x4093409340934093LL};
    static mmx_t mmx_V_red = {0x3312331233123312LL};
    static mmx_t mmx_V_green = {0xe5fce5fce5fce5fcLL};
    static mmx_t mmx_10w = {0x1010101010101010LL};
    static mmx_t mmx_00ffw = {0x00ff00ff00ff00ffLL};
    static mmx_t mmx_Y_coeff = {0x253f253f253f253fLL};

    movd_m2r (*pu, mm0);            /* mm0 = 00 00 00 00 u3 u2 u1 u0 */
    movd_m2r (*pv, mm1);            /* mm1 = 00 00 00 00 v3 v2 v1 v0 */
    movq_m2r (*py, mm6);            /* mm6 = Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 */
    pxor_r2r (mm4, mm4);            /* mm4 = 0 */
    /* XXX might do cache preload for image here */

    /*
     * Do the multiply part of the conversion for even and odd pixels
     * register usage:
     * mm0 -> Cblue, mm1 -> Cred, mm2 -> Cgreen even pixels
     * mm3 -> Cblue, mm4 -> Cred, mm5 -> Cgreen odd  pixels
     * mm6 -> Y even, mm7 -> Y odd
     */

    punpcklbw_r2r (mm4, mm0);       /* mm0 = u3 u2 u1 u0 */
    punpcklbw_r2r (mm4, mm1);       /* mm1 = v3 v2 v1 v0 */
    psubsw_m2r (mmx_80w, mm0);            /* u -= 128 */
    psubsw_m2r (mmx_80w, mm1);            /* v -= 128 */
    psllw_i2r (3, mm0);             /* promote precision */
    psllw_i2r (3, mm1);             /* promote precision */
    movq_r2r (mm0, mm2);            /* mm2 = u3 u2 u1 u0 */
    movq_r2r (mm1, mm3);            /* mm3 = v3 v2 v1 v0 */
    pmulhw_m2r (mmx_U_green, mm2);  /* mm2 = u * u_green */
    pmulhw_m2r (mmx_V_green, mm3);  /* mm3 = v * v_green */
    pmulhw_m2r (mmx_U_blue, mm0);   /* mm0 = chroma_b */
    pmulhw_m2r (mmx_V_red, mm1);    /* mm1 = chroma_r */
    paddsw_r2r (mm3, mm2);          /* mm2 = chroma_g */

    psubusb_m2r (mmx_10w, mm6);           /* Y -= 16 */
    movq_r2r (mm6, mm7);            /* mm7 = Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 */
    pand_m2r (mmx_00ffw, mm6);            /* mm6 =    Y6    Y4    Y2    Y0 */
    psrlw_i2r (8, mm7);             /* mm7 =    Y7    Y5    Y3    Y1 */
    psllw_i2r (3, mm6);             /* promote precision */
    psllw_i2r (3, mm7);             /* promote precision */
    pmulhw_m2r (mmx_Y_coeff, mm6);  /* mm6 = luma_rgb even */
    pmulhw_m2r (mmx_Y_coeff, mm7);  /* mm7 = luma_rgb odd */

    /*
     * Do the addition part of the conversion for even and odd pixels
     * register usage:
     * mm0 -> Cblue, mm1 -> Cred, mm2 -> Cgreen even pixels
     * mm3 -> Cblue, mm4 -> Cred, mm5 -> Cgreen odd  pixels
     * mm6 -> Y even, mm7 -> Y odd
     */

    movq_r2r (mm0, mm3);            /* mm3 = chroma_b */
    movq_r2r (mm1, mm4);            /* mm4 = chroma_r */
    movq_r2r (mm2, mm5);            /* mm5 = chroma_g */
    paddsw_r2r (mm6, mm0);          /* mm0 = B6 B4 B2 B0 */
    paddsw_r2r (mm7, mm3);          /* mm3 = B7 B5 B3 B1 */
    paddsw_r2r (mm6, mm1);          /* mm1 = R6 R4 R2 R0 */
    paddsw_r2r (mm7, mm4);          /* mm4 = R7 R5 R3 R1 */
    paddsw_r2r (mm6, mm2);          /* mm2 = G6 G4 G2 G0 */
    paddsw_r2r (mm7, mm5);          /* mm5 = G7 G5 G3 G1 */
    packuswb_r2r (mm0, mm0);        /* saturate to 0-255 */
    packuswb_r2r (mm1, mm1);        /* saturate to 0-255 */
    packuswb_r2r (mm2, mm2);        /* saturate to 0-255 */
    packuswb_r2r (mm3, mm3);        /* saturate to 0-255 */
    packuswb_r2r (mm4, mm4);        /* saturate to 0-255 */
    packuswb_r2r (mm5, mm5);        /* saturate to 0-255 */
    punpcklbw_r2r (mm3, mm0);       /* mm0 = B7 B6 B5 B4 B3 B2 B1 B0 */
    punpcklbw_r2r (mm4, mm1);       /* mm1 = R7 R6 R5 R4 R3 R2 R1 R0 */
    punpcklbw_r2r (mm5, mm2);       /* mm2 = G7 G6 G5 G4 G3 G2 G1 G0 */
}

static inline void mmx_unpack_16rgb (uint8_t * image, const int cpu)
{
    static mmx_t mmx_bluemask = {0xf8f8f8f8f8f8f8f8LL};
    static mmx_t mmx_greenmask = {0xfcfcfcfcfcfcfcfcLL};
    static mmx_t mmx_redmask = {0xf8f8f8f8f8f8f8f8LL};

    /*
     * convert RGB plane to RGB 16 bits
     * mm0 -> B, mm1 -> R, mm2 -> G
     * mm4 -> GB, mm5 -> AR pixel 4-7
     * mm6 -> GB, mm7 -> AR pixel 0-3
     */

    pand_m2r (mmx_bluemask, mm0);   /* mm0 = b7b6b5b4b3______ */
    pand_m2r (mmx_greenmask, mm2);  /* mm2 = g7g6g5g4g3g2____ */
    pand_m2r (mmx_redmask, mm1);    /* mm1 = r7r6r5r4r3______ */
    psrlq_i2r (3, mm0);             /* mm0 = ______b7b6b5b4b3 */
    pxor_r2r (mm4, mm4);            /* mm4 = 0 */
    movq_r2r (mm0, mm5);            /* mm5 = ______b7b6b5b4b3 */
    movq_r2r (mm2, mm7);            /* mm7 = g7g6g5g4g3g2____ */

    punpcklbw_r2r (mm4, mm2);
    punpcklbw_r2r (mm1, mm0);
    psllq_i2r (3, mm2);
    por_r2r (mm2, mm0);
    movntq (mm0, *image);

    punpckhbw_r2r (mm4, mm7);
    punpckhbw_r2r (mm1, mm5);
    psllq_i2r (3, mm7);
    por_r2r (mm7, mm5);
    movntq (mm5, *(image+8));
}

static inline void mmx_unpack_32rgb (uint8_t * image, const int cpu)
{
    /*
     * convert RGB plane to RGB packed format,
     * mm0 -> B, mm1 -> R, mm2 -> G, mm3 -> 0,
     * mm4 -> GB, mm5 -> AR pixel 4-7,
     * mm6 -> GB, mm7 -> AR pixel 0-3
     */

    pxor_r2r (mm3, mm3);
    movq_r2r (mm0, mm6);
    movq_r2r (mm1, mm7);
    movq_r2r (mm0, mm4);
    movq_r2r (mm1, mm5);
    punpcklbw_r2r (mm2, mm6);
    punpcklbw_r2r (mm3, mm7);
    punpcklwd_r2r (mm7, mm6);
    movntq (mm6, *image);
    movq_r2r (mm0, mm6);
    punpcklbw_r2r (mm2, mm6);
    punpckhwd_r2r (mm7, mm6);
    movntq (mm6, *(image+8));
    punpckhbw_r2r (mm2, mm4);
    punpckhbw_r2r (mm3, mm5);
    punpcklwd_r2r (mm5, mm4);
    movntq (mm4, *(image+16));
    movq_r2r (mm0, mm4);
    punpckhbw_r2r (mm2, mm4);
    punpckhwd_r2r (mm5, mm4);
    movntq (mm4, *(image+24));
}

static inline void rgb16 (void * const _id, uint8_t * const * src,
                    const unsigned int v_offset, const int cpu)
{
    convert_rgb_t * const id = (convert_rgb_t *) _id;
    uint8_t * dst;
    uint8_t * py, * pu, * pv;
    int i, j;

    dst = id->rgb_ptr + id->rgb_stride * v_offset;
    py = src[0];  pu = src[1];      pv = src[2];

    i = 16;
    do {
      j = id->width;
      do {
          mmx_yuv2rgb (py, pu, pv);
          mmx_unpack_16rgb (dst, cpu);
          py += 8;
          pu += 4;
          pv += 4;
          dst += 16;
      } while (--j);

      dst += id->rgb_increm;
      py += id->y_increm;
      if (! (--i & id->chroma420)) {
          pu += id->uv_increm;
          pv += id->uv_increm;
      } else {
          pu -= id->uv_stride_frame;
          pv -= id->uv_stride_frame;
      }
    } while (i);
}

static inline void argb32 (void * const _id, uint8_t * const * src,
                     const unsigned int v_offset, const int cpu)
{
    convert_rgb_t * const id = (convert_rgb_t *) _id;
    uint8_t * dst;
    uint8_t * py, * pu, * pv;
    int i, j;

    dst = id->rgb_ptr + id->rgb_stride * v_offset;
    py = src[0];  pu = src[1];      pv = src[2];

    i = 16;
    do {
      j = id->width;
      do {
          mmx_yuv2rgb (py, pu, pv);
          mmx_unpack_32rgb (dst, cpu);
          py += 8;
          pu += 4;
          pv += 4;
          dst += 32;
      } while (--j);

      dst += id->rgb_increm;
      py += id->y_increm;
      if (! (--i & id->chroma420)) {
          pu += id->uv_increm;
          pv += id->uv_increm;
      } else {
          pu -= id->uv_stride_frame;
          pv -= id->uv_stride_frame;
      }
    } while (i);
}

static void mmxext_rgb16 (void * id, uint8_t * const * src,
                    unsigned int v_offset)
{
    rgb16 (id, src, v_offset, CPU_MMXEXT);
}

static void mmxext_argb32 (void * id, uint8_t * const * src,
                     unsigned int v_offset)
{
    argb32 (id, src, v_offset, CPU_MMXEXT);
}

static void mmx_rgb16 (void * id, uint8_t * const * src, unsigned int v_offset)
{
    rgb16 (id, src, v_offset, CPU_MMX);
}

static void mmx_argb32 (void * id, uint8_t * const * src,
                  unsigned int v_offset)
{
    argb32 (id, src, v_offset, CPU_MMX);
}

mpeg2convert_copy_t * mpeg2convert_rgb_mmxext (int order, int bpp,
                                     const mpeg2_sequence_t * seq)
{
    if (order == MPEG2CONVERT_RGB && seq->chroma_width < seq->width) {
      if (bpp == 16)
          return mmxext_rgb16;
      else if (bpp == 32)
          return mmxext_argb32;
    }
    return NULL;  /* Fallback to C */
}

mpeg2convert_copy_t * mpeg2convert_rgb_mmx (int order, int bpp,
                                  const mpeg2_sequence_t * seq)
{
    if (order == MPEG2CONVERT_RGB && seq->chroma_width < seq->width) {
      if (bpp == 16)
          return mmx_rgb16;
      else if (bpp == 32)
          return mmx_argb32;
    }
    return NULL;  /* Fallback to C */
}
#endif

Generated by  Doxygen 1.6.0   Back to index