jpt.h 2.6 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475
  1. /*
  2. * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
  3. * Copyright (c) 2002-2007, Professor Benoit Macq
  4. * Copyright (c) 2002-2003, Yannick Verschueren
  5. * Copyright (c) 2005, Herve Drolon, FreeImage Team
  6. * All rights reserved.
  7. *
  8. * Redistribution and use in source and binary forms, with or without
  9. * modification, are permitted provided that the following conditions
  10. * are met:
  11. * 1. Redistributions of source code must retain the above copyright
  12. * notice, this list of conditions and the following disclaimer.
  13. * 2. Redistributions in binary form must reproduce the above copyright
  14. * notice, this list of conditions and the following disclaimer in the
  15. * documentation and/or other materials provided with the distribution.
  16. *
  17. * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
  18. * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19. * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20. * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  21. * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  22. * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  23. * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  24. * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  25. * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  26. * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  27. * POSSIBILITY OF SUCH DAMAGE.
  28. */
  29. #ifndef __JPT_H
  30. #define __JPT_H
  31. /**
  32. @file jpt.h
  33. @brief JPT-stream reader (JPEG 2000, JPIP)
  34. JPT-stream functions are implemented in J2K.C.
  35. */
  36. /**
  37. Message Header JPT stream structure
  38. */
  39. typedef struct opj_jpt_msg_header {
  40. /** In-class Identifier */
  41. unsigned int Id;
  42. /** Last byte information */
  43. unsigned int last_byte;
  44. /** Class Identifier */
  45. unsigned int Class_Id;
  46. /** CSn : index identifier */
  47. unsigned int CSn_Id;
  48. /** Message offset */
  49. unsigned int Msg_offset;
  50. /** Message length */
  51. unsigned int Msg_length;
  52. /** Auxiliary for JPP case */
  53. unsigned int Layer_nb;
  54. } opj_jpt_msg_header_t;
  55. /* ----------------------------------------------------------------------- */
  56. /**
  57. Initialize the value of the message header structure
  58. @param header Message header structure
  59. */
  60. void jpt_init_msg_header(opj_jpt_msg_header_t * header);
  61. /**
  62. Read the message header for a JPP/JPT - stream
  63. @param cinfo Codec context info
  64. @param cio CIO handle
  65. @param header Message header structure
  66. */
  67. void jpt_read_msg_header(opj_common_ptr cinfo, opj_cio_t *cio, opj_jpt_msg_header_t *header);
  68. #endif