cdd.h 2.9 KB

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  1. /***************************************************************************************
  2. * Genesis Plus
  3. * CD drive processor & CD-DA fader
  4. *
  5. * Copyright (C) 2012-2013 Eke-Eke (Genesis Plus GX)
  6. *
  7. * Redistribution and use of this code or any derivative works are permitted
  8. * provided that the following conditions are met:
  9. *
  10. * - Redistributions may not be sold, nor may they be used in a commercial
  11. * product or activity.
  12. *
  13. * - Redistributions that are modified from the original source must include the
  14. * complete source code, including the source code for all components used by a
  15. * binary built from the modified sources. However, as a special exception, the
  16. * source code distributed need not include anything that is normally distributed
  17. * (in either source or binary form) with the major components (compiler, kernel,
  18. * and so on) of the operating system on which the executable runs, unless that
  19. * component itself accompanies the executable.
  20. *
  21. * - Redistributions must reproduce the above copyright notice, this list of
  22. * conditions and the following disclaimer in the documentation and/or other
  23. * materials provided with the distribution.
  24. *
  25. * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  26. * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  27. * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  28. * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  29. * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  30. * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  31. * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  32. * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  33. * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  34. * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  35. * POSSIBILITY OF SUCH DAMAGE.
  36. *
  37. ****************************************************************************************/
  38. #ifndef _HW_CDD_
  39. #define _HW_CDD_
  40. #ifdef USE_LIBTREMOR
  41. #include "tremor/ivorbisfile.h"
  42. #endif
  43. /* CDD status */
  44. #define NO_DISC 0x00
  45. #define CD_PLAY 0x01
  46. #define CD_SEEK 0x02
  47. #define CD_SCAN 0x03
  48. #define CD_READY 0x04
  49. #define CD_OPEN 0x05 /* similar to 0x0E ? */
  50. #define CD_STOP 0x09
  51. #define CD_END 0x0C
  52. /* CD blocks scanning speed */
  53. #define CD_SCAN_SPEED 30
  54. #define CD_MAX_TRACKS 100
  55. /* CD track */
  56. typedef struct
  57. {
  58. void *fd;
  59. #ifdef USE_LIBTREMOR
  60. OggVorbis_File vf;
  61. #endif
  62. int offset;
  63. int start;
  64. int end;
  65. } track_t;
  66. /* CD TOC */
  67. typedef struct
  68. {
  69. int end;
  70. int last;
  71. track_t tracks[CD_MAX_TRACKS];
  72. } toc_t;
  73. /* CDD hardware */
  74. typedef struct
  75. {
  76. uint32 cycles;
  77. uint32 latency;
  78. int loaded;
  79. int index;
  80. int lba;
  81. int scanOffset;
  82. int volume;
  83. uint8 status;
  84. uint16 sectorSize;
  85. toc_t toc;
  86. int16 audio[2];
  87. } cdd_t;
  88. extern cdd_t cdd;
  89. #endif