Mercurial > cpython-lru_cache-weakref

annotate Modules/yuvconvert.c @ 79675:c0a2294de787 2.7

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Issue #16199: Backport 2to3 typo fix from 3.2.
author Chris Jerdonek <chris.jerdonek@gmail.com>
date Thu, 11 Oct 2012 16:15:46 -0700
parents fd25030223b0
children
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1746
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
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1
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Sjoerd Mullender <sjoerd@acm.org>
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2 #include "yuv.h"
685b31fe89c6 Added conversion routines to sv module.
Sjoerd Mullender <sjoerd@acm.org>
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3
685b31fe89c6 Added conversion routines to sv module.
Sjoerd Mullender <sjoerd@acm.org>
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4 void
685b31fe89c6 Added conversion routines to sv module.
Sjoerd Mullender <sjoerd@acm.org>
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5 yuv_sv411_to_cl422dc(int invert, void *data, void *yuv, int width, int height)
685b31fe89c6 Added conversion routines to sv module.
Sjoerd Mullender <sjoerd@acm.org>
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6 {
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Antoine Pitrou <solipsis@pitrou.net>
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7 struct yuv411 *in = data;
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8 struct yuv422 *out_even = yuv;
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9 struct yuv422 *out_odd = out_even + width / 2;
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Antoine Pitrou <solipsis@pitrou.net>
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10 int i, j; /* counters */
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11
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12 for (i = height / 2; i--; ) {
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13 for (j = width / 4; j--; ) {
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14 YUV422_Y0(*out_even) = YUV411_Y00(*in);
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15 YUV422_U0(*out_even) = YUV411_U00(*in);
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16 YUV422_V0(*out_even) = YUV411_V00(*in);
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Antoine Pitrou <solipsis@pitrou.net>
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17 YUV422_Y1(*out_even) = YUV411_Y01(*in);
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Antoine Pitrou <solipsis@pitrou.net>
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18 out_even++;
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19 YUV422_Y0(*out_even) = YUV411_Y02(*in);
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Antoine Pitrou <solipsis@pitrou.net>
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20 YUV422_U0(*out_even) = YUV411_U02(*in);
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Antoine Pitrou <solipsis@pitrou.net>
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21 YUV422_V0(*out_even) = YUV411_V02(*in);
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22 YUV422_Y1(*out_even) = YUV411_Y03(*in);
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23 out_even++;
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24 YUV422_Y0(*out_odd) = YUV411_Y10(*in);
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25 YUV422_U0(*out_odd) = YUV411_U10(*in);
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26 YUV422_V0(*out_odd) = YUV411_V10(*in);
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27 YUV422_Y1(*out_odd) = YUV411_Y11(*in);
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28 out_odd++;
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29 YUV422_Y0(*out_odd) = YUV411_Y12(*in);
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30 YUV422_U0(*out_odd) = YUV411_U12(*in);
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31 YUV422_V0(*out_odd) = YUV411_V12(*in);
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32 YUV422_Y1(*out_odd) = YUV411_Y13(*in);
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33 out_odd++;
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34 in++;
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35 }
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36 out_even += width / 2;
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37 out_odd += width / 2;
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38 }
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39 }
685b31fe89c6 Added conversion routines to sv module.
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40
685b31fe89c6 Added conversion routines to sv module.
Sjoerd Mullender <sjoerd@acm.org>
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41 void
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42 yuv_sv411_to_cl422dc_quartersize(int invert, void *data, void *yuv,
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Antoine Pitrou <solipsis@pitrou.net>
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43 int width, int height)
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44 {
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45 int w4 = width / 4; /* quarter of width is used often */
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Antoine Pitrou <solipsis@pitrou.net>
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46 struct yuv411 *in_even = data;
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47 struct yuv411 *in_odd = in_even + w4;
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48 struct yuv422 *out_even = yuv;
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49 struct yuv422 *out_odd = out_even + w4;
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Antoine Pitrou <solipsis@pitrou.net>
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50 int i, j; /* counters */
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51 int u, v; /* U and V values */
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52
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53 for (i = height / 4; i--; ) {
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54 for (j = w4; j--; ) {
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55 u = YUV411_U00(*in_even);
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56 v = YUV411_V00(*in_even);
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57
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58 YUV422_Y0(*out_even) = YUV411_Y00(*in_even);
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59 YUV422_U0(*out_even) = u;
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60 YUV422_V0(*out_even) = v;
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61 YUV422_Y1(*out_even) = YUV411_Y02(*in_even);
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62
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63 YUV422_Y0(*out_odd) = YUV411_Y10(*in_odd);
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64 YUV422_U0(*out_odd) = u;
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65 YUV422_V0(*out_odd) = v;
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66 YUV422_Y1(*out_odd) = YUV411_Y12(*in_odd);
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67
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68 in_even++;
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69 in_odd++;
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70 out_even++;
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71 out_odd++;
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72 }
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73 in_even += w4;
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74 in_odd += w4;
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75 out_even += w4;
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76 out_odd += w4;
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77 }
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78 }
685b31fe89c6 Added conversion routines to sv module.
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79
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80 void
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81 yuv_sv411_to_cl422dc_sixteenthsize(int invert, void *data, void *yuv,
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82 int width, int height)
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83 {
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84 int w4_3 = 3 * width / 4; /* three quarters of width is used often */
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85 int w8 = width / 8; /* and so is one eighth */
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86 struct yuv411 *in_even = data;
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87 struct yuv411 *in_odd = in_even + width / 2;
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88 struct yuv422 *out_even = yuv;
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89 struct yuv422 *out_odd = out_even + w8;
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90 int i, j; /* counters */
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91 int u, v; /* U and V values */
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92
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93 for (i = height / 8; i--; ) {
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94 for (j = w8; j--; ) {
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95 u = YUV411_U00(in_even[0]);
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96 v = YUV411_V00(in_even[0]);
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97
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98 YUV422_Y0(*out_even) = YUV411_Y00(in_even[0]);
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99 YUV422_U0(*out_even) = u;
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100 YUV422_V0(*out_even) = v;
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101 YUV422_Y1(*out_even) = YUV411_Y00(in_even[1]);
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102
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103 YUV422_Y0(*out_odd) = YUV411_Y00(in_odd[0]);
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104 YUV422_U0(*out_odd) = u;
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105 YUV422_V0(*out_odd) = v;
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106 YUV422_Y1(*out_odd) = YUV411_Y00(in_even[1]);
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107
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108 in_even += 2;
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109 in_odd += 2;
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110 out_even++;
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111 out_odd++;
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112 }
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113 in_even += w4_3;
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114 in_odd += w4_3;
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115 out_even += w8;
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116 out_odd += w8;
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117 }
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118 }