1 /* |
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2 * Copyright (c) 2010 Ixonos Plc. |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of the "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - Initial contribution |
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11 * |
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12 * Contributors: |
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13 * Ixonos Plc |
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14 * |
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15 * Description: |
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16 * |
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17 */ |
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18 |
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19 |
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20 #ifdef CHECK_MV_RANGE |
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21 #include <stdio.h> |
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22 #endif |
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23 |
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24 #include "globals.h" |
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25 #include "motcomp.h" |
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26 #include "framebuffer.h" |
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27 |
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28 #if defined(USE_CLIPBUF) && !defined(AVC_MOTION_COMP_ASM) |
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29 #include "clipbuf.h" |
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30 #endif |
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31 |
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32 |
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33 #define ONEFOURTH1 20 |
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34 #define ONEFOURTH2 -5 |
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35 #define ONEFOURTH3 1 |
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36 |
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37 |
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38 static const int numModeMotVecs[MOT_NUM_MODES+1] = { |
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39 0, 1, 2, 2, 4, 8, 8, 16 |
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40 }; |
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41 |
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42 static const int numModeMotVecs8x8[4] = { |
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43 1, 2, 2, 4 |
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44 }; |
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45 |
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46 /* |
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47 static const int blockShapes[][2] = { |
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48 {4, 4}, |
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49 {4, 2}, |
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50 {2, 4}, |
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51 {2, 2} |
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52 }; |
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53 |
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54 static const int blockShapes8x8[][2] = { |
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55 {2, 2}, |
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56 {2, 1}, |
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57 {1, 2}, |
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58 {1, 1} |
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59 }; |
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60 */ |
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61 |
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62 |
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63 #ifdef CHECK_MV_RANGE |
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64 extern int maxVerticalMvRange; |
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65 #endif |
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66 |
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67 |
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68 /* |
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69 * |
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70 * mcpGetNumMotVecs: |
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71 * |
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72 * Parameters: |
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73 * mode MB partition type (16x16, 8x16, 16x8, 8x8) |
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74 * subMbTypes Sub-MB partition types (8x8, 4x8, 8x4, 4x4) |
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75 * |
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76 * Function: |
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77 * Get the number of motion vectors that need to be decoded for given |
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78 * MB type and Sub-MB partition types. |
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79 * |
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80 * Returns: |
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81 * Number of motion vectors. |
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82 * |
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83 */ |
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84 int mcpGetNumMotVecs(int interMode, int subMbTypes[4]) |
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85 { |
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86 int numVecs; |
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87 |
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88 if (interMode < MOT_8x8) |
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89 numVecs = numModeMotVecs[interMode]; |
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90 else { |
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91 numVecs = numModeMotVecs8x8[subMbTypes[0]]; |
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92 numVecs += numModeMotVecs8x8[subMbTypes[1]]; |
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93 numVecs += numModeMotVecs8x8[subMbTypes[2]]; |
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94 numVecs += numModeMotVecs8x8[subMbTypes[3]]; |
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95 } |
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96 |
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97 return numVecs; |
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98 } |
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99 |
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100 |
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