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, 16 unsigned char *dest, 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 22 (short *q, short *dq, 23 unsigned char *dst, int stride, char *eobs) 24 { 25 int i, j; 26 27 for (i = 0; i < 4; i++) 28 { 29 for (j = 0; j < 4; j++) 30 { 31 if (*eobs++ > 1) 32 vp8_dequant_idct_add_c (q, dq, dst, stride); 33 else 34 { 35 vp8_dc_only_idct_add_c (q[0]*dq[0], dst, stride, dst, stride); 36 vpx_memset(q, 0, 2 * sizeof(q[0])); 37 } 38 39 q += 16; 40 dst += 4; 41 } 42 43 dst += 4*stride - 16; 44 } 45 } 46 47 void vp8_dequant_idct_add_uv_block_c 48 (short *q, short *dq, 49 unsigned char *dstu, unsigned char *dstv, int stride, char *eobs) 50 { 51 int i, j; 52 53 for (i = 0; i < 2; i++) 54 { 55 for (j = 0; j < 2; j++) 56 { 57 if (*eobs++ > 1) 58 vp8_dequant_idct_add_c (q, dq, dstu, stride); 59 else 60 { 61 vp8_dc_only_idct_add_c (q[0]*dq[0], dstu, stride, dstu, stride); 62 vpx_memset(q, 0, 2 * sizeof(q[0])); 63 } 64 65 q += 16; 66 dstu += 4; 67 } 68 69 dstu += 4*stride - 8; 70 } 71 72 for (i = 0; i < 2; i++) 73 { 74 for (j = 0; j < 2; j++) 75 { 76 if (*eobs++ > 1) 77 vp8_dequant_idct_add_c (q, dq, dstv, stride); 78 else 79 { 80 vp8_dc_only_idct_add_c (q[0]*dq[0], dstv, stride, dstv, stride); 81 vpx_memset(q, 0, 2 * sizeof(q[0])); 82 } 83 84 q += 16; 85 dstv += 4; 86 } 87 88 dstv += 4*stride - 8; 89 } 90 } 91
