2 * Copyright (c) 2001-2003, David Janssens
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3 * Copyright (c) 2002-2003, Yannick Verschueren
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4 * Copyright (c) 2003-2005, Francois Devaux and Antonin Descampe
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5 * Copyright (c) 2005, Herve Drolon, FreeImage Team
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6 * Copyright (c) 2002-2005, Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium
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7 * Copyright (c) 2006, M�nica D�ez Garc�a, Image Processing Laboratory, University of Valladolid, Spain
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8 * All rights reserved.
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10 * Redistribution and use in source and binary forms, with or without
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11 * modification, are permitted provided that the following conditions
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13 * 1. Redistributions of source code must retain the above copyright
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14 * notice, this list of conditions and the following disclaimer.
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15 * 2. Redistributions in binary form must reproduce the above copyright
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16 * notice, this list of conditions and the following disclaimer in the
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17 * documentation and/or other materials provided with the distribution.
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19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
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20 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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22 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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23 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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29 * POSSIBILITY OF SUCH DAMAGE.
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35 @brief Implementation of a tier-2 coding (packetization of code-block data) (T2)
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39 /** @defgroup T2 T2 - Implementation of a tier-2 coding */
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45 typedef struct opj_t2 {
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46 /** Codec context */
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47 opj_common_ptr cinfo;
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48 /** Encoding: pointer to the src volume. Decoding: pointer to the dst volume. */
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49 opj_volume_t *volume;
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50 /** Pointer to the volume coding parameters */
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54 /** @name Funciones generales */
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56 /* ----------------------------------------------------------------------- */
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59 Encode the packets of a tile to a destination buffer
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61 @param tileno number of the tile encoded
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62 @param tile the tile for which to write the packets
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63 @param maxlayers maximum number of layers
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64 @param dest the destination buffer
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65 @param len the length of the destination buffer
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66 @param volume_info structure to create an index file
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67 @return Number of bytes written from packets
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69 int t2_encode_packets(opj_t2_t* t2, int tileno, opj_tcd_tile_t *tile, int maxlayers, unsigned char *dest, int len, opj_volume_info_t *volume_info);
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72 Decode the packets of a tile from a source buffer
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74 @param src the source buffer
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75 @param len length of the source buffer
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76 @param tileno number that identifies the tile for which to decode the packets
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77 @param tile tile for which to decode the packets
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78 @return Number of bytes read from packets
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80 int t2_decode_packets(opj_t2_t *t2, unsigned char *src, int len, int tileno, opj_tcd_tile_t *tile);
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84 @param cinfo Codec context info
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85 @param volume Source or destination volume
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86 @param cp Volume coding parameters
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87 @return Returns a new T2 handle if successful, returns NULL otherwise
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89 opj_t2_t* t2_create(opj_common_ptr cinfo, opj_volume_t *volume, opj_cp_t *cp);
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92 @param t2 T2 handle to destroy
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94 void t2_destroy(opj_t2_t *t2);
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96 /* ----------------------------------------------------------------------- */
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101 #endif /* __T2_H */
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