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1 /* |
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2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved. |
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3 * |
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4 * Use of this source code is governed by a BSD-style license |
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5 * that can be found in the LICENSE file in the root of the source |
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6 * tree. An additional intellectual property rights grant can be found |
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7 * in the file PATENTS. All contributing project authors may |
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8 * be found in the AUTHORS file in the root of the source tree. |
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9 */ |
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10 |
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11 |
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12 #include "vp8.h" |
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13 |
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14 /*!\defgroup vp8_decoder WebM VP8 Decoder |
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15 * \ingroup vp8 |
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16 * |
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17 * @{ |
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18 */ |
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19 /*!\file |
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20 * \brief Provides definitions for using the VP8 algorithm within the vpx Decoder |
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21 * interface. |
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22 */ |
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23 #ifndef VP8DX_H |
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24 #define VP8DX_H |
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25 |
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26 #ifdef __cplusplus |
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27 extern "C" { |
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28 #endif |
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29 |
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30 /*!\name Algorithm interface for VP8 |
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31 * |
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32 * This interface provides the capability to decode raw VP8 streams, as would |
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33 * be found in AVI files and other non-Flash uses. |
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34 * @{ |
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35 */ |
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36 extern vpx_codec_iface_t vpx_codec_vp8_dx_algo; |
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37 extern vpx_codec_iface_t *vpx_codec_vp8_dx(void); |
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38 |
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39 /* TODO(jkoleszar): These move to VP9 in a later patch set. */ |
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40 extern vpx_codec_iface_t vpx_codec_vp9_dx_algo; |
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41 extern vpx_codec_iface_t *vpx_codec_vp9_dx(void); |
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42 /*!@} - end algorithm interface member group*/ |
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43 |
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44 /* Include controls common to both the encoder and decoder */ |
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45 #include "vp8.h" |
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46 |
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47 |
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48 /*!\enum vp8_dec_control_id |
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49 * \brief VP8 decoder control functions |
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50 * |
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51 * This set of macros define the control functions available for the VP8 |
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52 * decoder interface. |
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53 * |
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54 * \sa #vpx_codec_control |
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55 */ |
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56 enum vp8_dec_control_id { |
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57 /** control function to get info on which reference frames were updated |
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58 * by the last decode |
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59 */ |
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60 VP8D_GET_LAST_REF_UPDATES = VP8_DECODER_CTRL_ID_START, |
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61 |
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62 /** check if the indicated frame is corrupted */ |
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63 VP8D_GET_FRAME_CORRUPTED, |
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64 |
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65 /** control function to get info on which reference frames were used |
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66 * by the last decode |
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67 */ |
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68 VP8D_GET_LAST_REF_USED, |
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69 |
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70 /** decryption function to decrypt encoded buffer data immediately |
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71 * before decoding. Takes a vp8_decrypt_init, which contains |
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72 * a callback function and opaque context pointer. |
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73 */ |
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74 VP8D_SET_DECRYPTOR, |
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75 |
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76 /** For testing. */ |
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77 VP9_INVERT_TILE_DECODE_ORDER, |
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78 |
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79 VP8_DECODER_CTRL_ID_MAX |
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80 }; |
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81 |
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82 /*!\brief Structure to hold decryption state |
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83 * |
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84 * Defines a structure to hold the decryption state and access function. |
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85 */ |
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86 typedef struct vp8_decrypt_init { |
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87 /** Decrypt n bytes of data from input -> output, using the decrypt_state |
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88 * passed in VP8D_SET_DECRYPTOR. |
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89 */ |
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90 void (*decrypt_cb)(void *decrypt_state, const unsigned char *input, |
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91 unsigned char *output, int count); |
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92 /*! Decryption state. */ |
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93 void *decrypt_state; |
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94 } vp8_decrypt_init; |
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95 |
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96 /*!\brief VP8 decoder control function parameter type |
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97 * |
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98 * Defines the data types that VP8D control functions take. Note that |
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99 * additional common controls are defined in vp8.h |
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100 * |
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101 */ |
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102 |
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103 |
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104 VPX_CTRL_USE_TYPE(VP8D_GET_LAST_REF_UPDATES, int *) |
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105 VPX_CTRL_USE_TYPE(VP8D_GET_FRAME_CORRUPTED, int *) |
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106 VPX_CTRL_USE_TYPE(VP8D_GET_LAST_REF_USED, int *) |
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107 VPX_CTRL_USE_TYPE(VP8D_SET_DECRYPTOR, vp8_decrypt_init *) |
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108 VPX_CTRL_USE_TYPE(VP9_INVERT_TILE_DECODE_ORDER, int) |
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109 |
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110 /*! @} - end defgroup vp8_decoder */ |
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111 |
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112 #ifdef __cplusplus |
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113 } // extern "C" |
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114 #endif |
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115 |
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116 #endif |