shithub: libvpx

ref: a66da313805f41076fd05358a65c1084f646f348
dir: /vp8/common/mips/dspr2/idct_blk_dspr2.c/

/*
 *  Copyright (c) 2012 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_config.h"
#include "vp8_rtcd.h"

#if HAVE_DSPR2

void vp8_dequant_idct_add_y_block_dspr2(short *q, short *dq, unsigned char *dst,
                                        int stride, char *eobs) {
  int i, j;

  for (i = 0; i < 4; ++i) {
    for (j = 0; j < 4; ++j) {
      if (*eobs++ > 1)
        vp8_dequant_idct_add_dspr2(q, dq, dst, stride);
      else {
        vp8_dc_only_idct_add_dspr2(q[0] * dq[0], dst, stride, dst, stride);
        ((int *)q)[0] = 0;
      }

      q += 16;
      dst += 4;
    }

    dst += 4 * stride - 16;
  }
}

void vp8_dequant_idct_add_uv_block_dspr2(short *q, short *dq,
                                         unsigned char *dstu,
                                         unsigned char *dstv, int stride,
                                         char *eobs) {
  int i, j;

  for (i = 0; i < 2; ++i) {
    for (j = 0; j < 2; ++j) {
      if (*eobs++ > 1)
        vp8_dequant_idct_add_dspr2(q, dq, dstu, stride);
      else {
        vp8_dc_only_idct_add_dspr2(q[0] * dq[0], dstu, stride, dstu, stride);
        ((int *)q)[0] = 0;
      }

      q += 16;
      dstu += 4;
    }

    dstu += 4 * stride - 8;
  }

  for (i = 0; i < 2; ++i) {
    for (j = 0; j < 2; ++j) {
      if (*eobs++ > 1)
        vp8_dequant_idct_add_dspr2(q, dq, dstv, stride);
      else {
        vp8_dc_only_idct_add_dspr2(q[0] * dq[0], dstv, stride, dstv, stride);
        ((int *)q)[0] = 0;
      }

      q += 16;
      dstv += 4;
    }

    dstv += 4 * stride - 8;
  }
}

#endif