1 /* 2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #include "vpx_config.h" 12 #include "vp8_rtcd.h" 13 #include "vpx_mem/vpx_mem.h" 14 15 void vp8_dequant_idct_add_c(short *input, short *dq, unsigned char *dest, 16 int stride); 17 void vp8_dc_only_idct_add_c(short input_dc, unsigned char *pred, 18 int pred_stride, unsigned char *dst_ptr, 19 int dst_stride); 20 21 void vp8_dequant_idct_add_y_block_c(short *q, short *dq, unsigned char *dst, 22 int stride, char *eobs) { 23 int i, j; 24 25 for (i = 0; i < 4; ++i) { 26 for (j = 0; j < 4; ++j) { 27 if (*eobs++ > 1) { 28 vp8_dequant_idct_add_c(q, dq, dst, stride); 29 } else { 30 vp8_dc_only_idct_add_c(q[0] * dq[0], dst, stride, dst, stride); 31 memset(q, 0, 2 * sizeof(q[0])); 32 } 33 34 q += 16; 35 dst += 4; 36 } 37 38 dst += 4 * stride - 16; 39 } 40 } 41 42 void vp8_dequant_idct_add_uv_block_c(short *q, short *dq, unsigned char *dstu, 43 unsigned char *dstv, int stride, 44 char *eobs) { 45 int i, j; 46 47 for (i = 0; i < 2; ++i) { 48 for (j = 0; j < 2; ++j) { 49 if (*eobs++ > 1) { 50 vp8_dequant_idct_add_c(q, dq, dstu, stride); 51 } else { 52 vp8_dc_only_idct_add_c(q[0] * dq[0], dstu, stride, dstu, stride); 53 memset(q, 0, 2 * sizeof(q[0])); 54 } 55 56 q += 16; 57 dstu += 4; 58 } 59 60 dstu += 4 * stride - 8; 61 } 62 63 for (i = 0; i < 2; ++i) { 64 for (j = 0; j < 2; ++j) { 65 if (*eobs++ > 1) { 66 vp8_dequant_idct_add_c(q, dq, dstv, stride); 67 } else { 68 vp8_dc_only_idct_add_c(q[0] * dq[0], dstv, stride, dstv, stride); 69 memset(q, 0, 2 * sizeof(q[0])); 70 } 71 72 q += 16; 73 dstv += 4; 74 } 75 76 dstv += 4 * stride - 8; 77 } 78 } 79
