rawIO16P4.cpp

   1 /* ***** BEGIN LICENSE BLOCK *****
   2  *
   3  * $Id$
   4  *
   5  * The MIT License
   6  *
   7  * Copyright (c) 2008 BBC Research
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   9  * Permission is hereby granted, free of charge, to any person obtaining a copy
  10  * of this software and associated documentation files (the "Software"), to deal
  11  * in the Software without restriction, including without limitation the rights
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  17  * all copies or substantial portions of the Software.
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  20  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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  27  * ***** END LICENSE BLOCK ***** */
  28
  29 #include <assert.h>
  30 #include "rawIO16P4.h"
  31
  32 RawFrame& RawReader16P4::read(RawFrame& f)
  33 {
  34         assert(f.chroma == RawFrame::Cr444);
  35         const int line_len = f.luma.width() * 2;
  36         unsigned char* in_line = new unsigned char[line_len];
  37         unsigned char* ptr;
  38
  39         /* read luma plane */
  40         for (int y = 0; y < f.luma.height(); y++) {
  41                 if (fread(in_line, line_len, 1, file) < 1)
  42                         break;
  43                 ptr = in_line;
  44                 for (int x = 0; x < f.luma.width(); x++, ptr+=2)
  45                         f.luma[y][x] = ((ptr[0] << 8) | ptr[1]);
  46         }
  47
  48         /* read c1 plane */
  49         const int chroma_line_len = line_len;
  50         for (int y = 0; y < f.cb.height(); y++) {
  51                 if (fread(in_line, chroma_line_len, 1, file) < 1)
  52                         break;
  53                 ptr = in_line;
  54                 for (int x = 0; x < f.cb.width(); x++, ptr+=2)
  55                         f.cb[y][x] = ((ptr[0] << 8) | ptr[1]);
  56         }
  57
  58         /* read c2 plane */
  59         for (int y = 0; y < f.cr.height(); y++) {
  60                 if (fread(in_line, chroma_line_len, 1, file) < 1)
  61                         break;
  62                 ptr = in_line;
  63                 for (int x = 0; x < f.cr.width(); x++, ptr+=2)
  64                         f.cr[y][x] = ((ptr[0] << 8) | ptr[1]);
  65         }
  66
  67         free(in_line);
  68         return f;
  69 }
  70
  71 RawFrame& RawReader16P4::read()
  72 {
  73         throw;
  74 }
  75
  76 void RawWriter16P4::write(const RawFrame& f) const
  77 {
  78         assert(f.chroma == RawFrame::Cr444);
  79         const int line_len = f.luma.width() * 2;
  80         unsigned char* out_line = new unsigned char[line_len];
  81         unsigned char* ptr;
  82
  83         /* write luma plane */
  84         for (int y = 0; y < f.luma.height(); y++) {
  85                 ptr = out_line;
  86                 for (int x = 0; x < f.luma.width(); x++, ptr+=2) {
  87                         int v = f.luma[y][x];
  88                         ptr[0] = v >> 8;
  89                         ptr[1] = v & 0xff;
  90                 }
  91                 fwrite(out_line, line_len, 1, file);
  92         }
  93
  94         /* write c1 plane */
  95         const int chroma_line_len = line_len;
  96         for (int y = 0; y < f.cb.height(); y++) {
  97                 ptr = out_line;
  98                 for (int x = 0; x < f.cb.width(); x++, ptr+=2) {
  99                         int v = f.cb[y][x];
 100                         ptr[0] = v >> 8;
 101                         ptr[1] = v & 0xff;
 102                 }
 103                 fwrite(out_line, chroma_line_len, 1, file);
 104         }
 105
 106         /* write c2 plane */
 107         for (int y = 0; y < f.cr.height(); y++) {
 108                 ptr = out_line;
 109                 for (int x = 0; x < f.cr.width(); x++, ptr+=2) {
 110                         int v = f.cr[y][x];
 111                         ptr[0] = v >> 8;
 112                         ptr[1] = v & 0xff;
 113                 }
 114                 fwrite(out_line, chroma_line_len, 1, file);
 115         }
 116
 117         free(out_line);
 118 }