shithub: libvpx

ref: 8be7e572a70ebe98693762868e2a72673e74feb9
dir: /vp8/common/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_config.h"
#include "vp8_rtcd.h"
#include "vp8/common/blockd.h"
#include "vpx_mem/vpx_mem.h"

extern void vp8_dequantize_b_impl_mmx(short *sq, short *dq, short *q);

void vp8_dequantize_b_mmx(BLOCKD *d, short *DQC) {
  short *sq = (short *)d->qcoeff;
  short *dq = (short *)d->dqcoeff;

  vp8_dequantize_b_impl_mmx(sq, dq, DQC);
}

void vp8_dequant_idct_add_y_block_mmx(short *q, short *dq, unsigned char *dst,
                                      int stride, char *eobs) {
  int i;

  for (i = 0; i < 4; ++i) {
    if (eobs[0] > 1) {
      vp8_dequant_idct_add_mmx(q, dq, dst, stride);
    } else if (eobs[0] == 1) {
      vp8_dc_only_idct_add_mmx(q[0] * dq[0], dst, stride, dst, stride);
      memset(q, 0, 2 * sizeof(q[0]));
    }

    if (eobs[1] > 1) {
      vp8_dequant_idct_add_mmx(q + 16, dq, dst + 4, stride);
    } else if (eobs[1] == 1) {
      vp8_dc_only_idct_add_mmx(q[16] * dq[0], dst + 4, stride, dst + 4, stride);
      memset(q + 16, 0, 2 * sizeof(q[0]));
    }

    if (eobs[2] > 1) {
      vp8_dequant_idct_add_mmx(q + 32, dq, dst + 8, stride);
    } else if (eobs[2] == 1) {
      vp8_dc_only_idct_add_mmx(q[32] * dq[0], dst + 8, stride, dst + 8, stride);
      memset(q + 32, 0, 2 * sizeof(q[0]));
    }

    if (eobs[3] > 1) {
      vp8_dequant_idct_add_mmx(q + 48, dq, dst + 12, stride);
    } else if (eobs[3] == 1) {
      vp8_dc_only_idct_add_mmx(q[48] * dq[0], dst + 12, stride, dst + 12,
                               stride);
      memset(q + 48, 0, 2 * sizeof(q[0]));
    }

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

void vp8_dequant_idct_add_uv_block_mmx(short *q, short *dq, unsigned char *dstu,
                                       unsigned char *dstv, int stride,
                                       char *eobs) {
  int i;

  for (i = 0; i < 2; ++i) {
    if (eobs[0] > 1) {
      vp8_dequant_idct_add_mmx(q, dq, dstu, stride);
    } else if (eobs[0] == 1) {
      vp8_dc_only_idct_add_mmx(q[0] * dq[0], dstu, stride, dstu, stride);
      memset(q, 0, 2 * sizeof(q[0]));
    }

    if (eobs[1] > 1) {
      vp8_dequant_idct_add_mmx(q + 16, dq, dstu + 4, stride);
    } else if (eobs[1] == 1) {
      vp8_dc_only_idct_add_mmx(q[16] * dq[0], dstu + 4, stride, dstu + 4,
                               stride);
      memset(q + 16, 0, 2 * sizeof(q[0]));
    }

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

  for (i = 0; i < 2; ++i) {
    if (eobs[0] > 1) {
      vp8_dequant_idct_add_mmx(q, dq, dstv, stride);
    } else if (eobs[0] == 1) {
      vp8_dc_only_idct_add_mmx(q[0] * dq[0], dstv, stride, dstv, stride);
      memset(q, 0, 2 * sizeof(q[0]));
    }

    if (eobs[1] > 1) {
      vp8_dequant_idct_add_mmx(q + 16, dq, dstv + 4, stride);
    } else if (eobs[1] == 1) {
      vp8_dc_only_idct_add_mmx(q[16] * dq[0], dstv + 4, stride, dstv + 4,
                               stride);
      memset(q + 16, 0, 2 * sizeof(q[0]));
    }

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