4a91541c94
to the dqcoeff or qcoeff buffer. The encoder would populate the dc coeffs of the y blocks as a separate stage (recon_dcblock) and the decoder would use a special version of the idct. This change eliminates the extra copy and reduces the code footprint. [Tero] Added needed changes to armv6 and NEON assembly. Change-Id: I83202ffdbaf83f6e5dd69f4ba2519fcf0b13b3ba
118 lines
3.3 KiB
C
118 lines
3.3 KiB
C
/*
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* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "vpx_config.h"
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#include "vp8/common/idct.h"
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#include "vp8/decoder/dequantize.h"
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void vp8_dequant_idct_add_y_block_mmx
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(short *q, short *dq,
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unsigned char *dst, int stride, char *eobs)
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{
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int i;
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for (i = 0; i < 4; i++)
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{
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if (eobs[0] > 1)
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vp8_dequant_idct_add_mmx (q, dq, dst, stride);
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else if (eobs[0] == 1)
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{
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vp8_dc_only_idct_add_mmx (q[0]*dq[0], dst, stride, dst, stride);
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((int *)q)[0] = 0;
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}
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if (eobs[1] > 1)
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vp8_dequant_idct_add_mmx (q+16, dq, dst+4, stride);
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else if (eobs[1] == 1)
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{
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vp8_dc_only_idct_add_mmx (q[16]*dq[0], dst+4, stride,
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dst+4, stride);
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((int *)(q+16))[0] = 0;
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}
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if (eobs[2] > 1)
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vp8_dequant_idct_add_mmx (q+32, dq, dst+8, stride);
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else if (eobs[2] == 1)
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{
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vp8_dc_only_idct_add_mmx (q[32]*dq[0], dst+8, stride,
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dst+8, stride);
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((int *)(q+32))[0] = 0;
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}
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if (eobs[3] > 1)
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vp8_dequant_idct_add_mmx (q+48, dq, dst+12, stride);
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else if (eobs[3] == 1)
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{
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vp8_dc_only_idct_add_mmx (q[48]*dq[0], dst+12, stride,
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dst+12, stride);
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((int *)(q+48))[0] = 0;
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}
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q += 64;
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dst += 4*stride;
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eobs += 4;
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}
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}
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void vp8_dequant_idct_add_uv_block_mmx
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(short *q, short *dq,
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unsigned char *dstu, unsigned char *dstv, int stride, char *eobs)
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{
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int i;
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for (i = 0; i < 2; i++)
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{
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if (eobs[0] > 1)
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vp8_dequant_idct_add_mmx (q, dq, dstu, stride);
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else if (eobs[0] == 1)
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{
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vp8_dc_only_idct_add_mmx (q[0]*dq[0], dstu, stride, dstu, stride);
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((int *)q)[0] = 0;
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}
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if (eobs[1] > 1)
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vp8_dequant_idct_add_mmx (q+16, dq, dstu+4, stride);
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else if (eobs[1] == 1)
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{
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vp8_dc_only_idct_add_mmx (q[16]*dq[0], dstu+4, stride,
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dstu+4, stride);
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((int *)(q+16))[0] = 0;
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}
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q += 32;
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dstu += 4*stride;
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eobs += 2;
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}
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for (i = 0; i < 2; i++)
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{
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if (eobs[0] > 1)
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vp8_dequant_idct_add_mmx (q, dq, dstv, stride);
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else if (eobs[0] == 1)
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{
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vp8_dc_only_idct_add_mmx (q[0]*dq[0], dstv, stride, dstv, stride);
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((int *)q)[0] = 0;
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}
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if (eobs[1] > 1)
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vp8_dequant_idct_add_mmx (q+16, dq, dstv+4, stride);
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else if (eobs[1] == 1)
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{
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vp8_dc_only_idct_add_mmx (q[16]*dq[0], dstv+4, stride,
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dstv+4, stride);
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((int *)(q+16))[0] = 0;
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}
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q += 32;
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dstv += 4*stride;
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eobs += 2;
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}
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}
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