shithub: libvpx

ref: 849c9540d5070a7bfbdb9a4545da763d87bbce15
dir: /vp9/decoder/x86/idct_blk_mmx.c/

/*
 *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

#include "vpx_ports/config.h"
#include "vp9/common/idct.h"
#include "vp9/decoder/dequantize.h"

void vp9_dequant_dc_idct_add_y_block_mmx(short *q, short *dq,
                                         unsigned char *pre,
                                         unsigned char *dst,
                                         int stride, unsigned short *eobs,
                                         short *dc) {
  int i;

  for (i = 0; i < 4; i++) {
    if (eobs[0] > 1)
      vp9_dequant_dc_idct_add_mmx(q, dq, pre, dst, 16, stride, dc[0]);
    else
      vp9_dc_only_idct_add_mmx(dc[0], pre, dst, 16, stride);

    if (eobs[1] > 1)
      vp9_dequant_dc_idct_add_mmx(q + 16, dq, pre + 4,
                                  dst + 4, 16, stride, dc[1]);
    else
      vp9_dc_only_idct_add_mmx(dc[1], pre + 4, dst + 4, 16, stride);

    if (eobs[2] > 1)
      vp9_dequant_dc_idct_add_mmx(q + 32, dq, pre + 8,
                                  dst + 8, 16, stride, dc[2]);
    else
      vp9_dc_only_idct_add_mmx(dc[2], pre + 8, dst + 8, 16, stride);

    if (eobs[3] > 1)
      vp9_dequant_dc_idct_add_mmx(q + 48, dq, pre + 12,
                                  dst + 12, 16, stride, dc[3]);
    else
      vp9_dc_only_idct_add_mmx(dc[3], pre + 12, dst + 12, 16, stride);

    q    += 64;
    dc   += 4;
    pre  += 64;
    dst  += 4 * stride;
    eobs += 4;
  }
}

void vp9_dequant_idct_add_y_block_mmx(short *q, short *dq,
                                      unsigned char *pre,
                                      unsigned char *dst,
                                      int stride, unsigned short *eobs) {
  int i;

  for (i = 0; i < 4; i++) {
    if (eobs[0] > 1)
      vp9_dequant_idct_add_mmx(q, dq, pre, dst, 16, stride);
    else {
      vp9_dc_only_idct_add_mmx(q[0]*dq[0], pre, dst, 16, stride);
      ((int *)q)[0] = 0;
    }

    if (eobs[1] > 1)
      vp9_dequant_idct_add_mmx(q + 16, dq, pre + 4, dst + 4, 16, stride);
    else {
      vp9_dc_only_idct_add_mmx(q[16]*dq[0], pre + 4, dst + 4, 16, stride);
      ((int *)(q + 16))[0] = 0;
    }

    if (eobs[2] > 1)
      vp9_dequant_idct_add_mmx(q + 32, dq, pre + 8, dst + 8, 16, stride);
    else {
      vp9_dc_only_idct_add_mmx(q[32]*dq[0], pre + 8, dst + 8, 16, stride);
      ((int *)(q + 32))[0] = 0;
    }

    if (eobs[3] > 1)
      vp9_dequant_idct_add_mmx(q + 48, dq, pre + 12, dst + 12, 16, stride);
    else {
      vp9_dc_only_idct_add_mmx(q[48]*dq[0], pre + 12, dst + 12, 16, stride);
      ((int *)(q + 48))[0] = 0;
    }

    q    += 64;
    pre  += 64;
    dst  += 4 * stride;
    eobs += 4;
  }
}

void vp9_dequant_idct_add_uv_block_mmx(short *q, short *dq,
                                       unsigned char *pre,
                                       unsigned char *dstu,
                                       unsigned char *dstv,
                                       int stride, unsigned short *eobs) {
  int i;

  for (i = 0; i < 2; i++) {
    if (eobs[0] > 1)
      vp9_dequant_idct_add_mmx(q, dq, pre, dstu, 8, stride);
    else {
      vp9_dc_only_idct_add_mmx(q[0]*dq[0], pre, dstu, 8, stride);
      ((int *)q)[0] = 0;
    }

    if (eobs[1] > 1)
      vp9_dequant_idct_add_mmx(q + 16, dq, pre + 4, dstu + 4, 8, stride);
    else {
      vp9_dc_only_idct_add_mmx(q[16]*dq[0], pre + 4, dstu + 4, 8, stride);
      ((int *)(q + 16))[0] = 0;
    }

    q    += 32;
    pre  += 32;
    dstu += 4 * stride;
    eobs += 2;
  }

  for (i = 0; i < 2; i++) {
    if (eobs[0] > 1)
      vp9_dequant_idct_add_mmx(q, dq, pre, dstv, 8, stride);
    else {
      vp9_dc_only_idct_add_mmx(q[0]*dq[0], pre, dstv, 8, stride);
      ((int *)q)[0] = 0;
    }

    if (eobs[1] > 1)
      vp9_dequant_idct_add_mmx(q + 16, dq, pre + 4, dstv + 4, 8, stride);
    else {
      vp9_dc_only_idct_add_mmx(q[16]*dq[0], pre + 4, dstv + 4, 8, stride);
      ((int *)(q + 16))[0] = 0;
    }

    q    += 32;
    pre  += 32;
    dstv += 4 * stride;
    eobs += 2;
  }
}