mm.h 3.0 KB

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  1. /*
  2. * Copyright (c) 2018, Chips&Media
  3. * All rights reserved.
  4. *
  5. * Redistribution and use in source and binary forms, with or without
  6. * modification, are permitted provided that the following conditions are met:
  7. *
  8. * 1. Redistributions of source code must retain the above copyright notice, this
  9. * list of conditions and the following disclaimer.
  10. * 2. Redistributions in binary form must reproduce the above copyright notice,
  11. * this list of conditions and the following disclaimer in the documentation
  12. * and/or other materials provided with the distribution.
  13. *
  14. * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
  15. * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  16. * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  17. * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
  18. * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  19. * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  20. * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  21. * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22. * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  23. * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24. */
  25. #ifndef __CNM_VIDEO_MEMORY_MANAGEMENT_H__
  26. #define __CNM_VIDEO_MEMORY_MANAGEMENT_H__
  27. typedef struct _jmem_info_struct {
  28. unsigned long total_pages;
  29. unsigned long alloc_pages;
  30. unsigned long free_pages;
  31. unsigned long page_size;
  32. } jmem_info_t;
  33. #if defined(WIN32) || defined(WIN64)
  34. #if (_MSC_VER == 1200)
  35. typedef _int64 vmem_key_t;
  36. #else
  37. typedef unsigned long long vmem_key_t;
  38. #endif
  39. #else
  40. typedef unsigned long long vmem_key_t;
  41. #endif
  42. #define VMEM_PAGE_SIZE (16*1024UL)
  43. #define MAKE_KEY(_a, _b) (((vmem_key_t)_a)<<32 | _b)
  44. #define KEY_TO_VALUE(_key) (_key>>32)
  45. typedef struct page_struct {
  46. int pageno;
  47. unsigned long addr;
  48. int used;
  49. int alloc_pages;
  50. int first_pageno;
  51. } page_t;
  52. typedef struct avl_node_struct {
  53. vmem_key_t key;
  54. int height;
  55. page_t* page;
  56. struct avl_node_struct* left;
  57. struct avl_node_struct* right;
  58. } avl_node_t;
  59. typedef struct _jpeg_mm_struct {
  60. avl_node_t* free_tree;
  61. avl_node_t* alloc_tree;
  62. page_t* page_list;
  63. int num_pages;
  64. unsigned long base_addr;
  65. unsigned long mem_size;
  66. void* mutex;
  67. int free_page_count;
  68. int alloc_page_count;
  69. } jpeg_mm_t;
  70. #if defined (__cplusplus)
  71. extern "C" {
  72. #endif
  73. extern int
  74. jmem_init(
  75. jpeg_mm_t* mm,
  76. unsigned long addr,
  77. unsigned long size
  78. );
  79. extern int
  80. jmem_exit(
  81. jpeg_mm_t* mm
  82. );
  83. extern unsigned long
  84. jmem_alloc(
  85. jpeg_mm_t* mm,
  86. int size,
  87. unsigned long pid
  88. );
  89. extern int
  90. jmem_free(
  91. jpeg_mm_t* mm,
  92. unsigned long ptr,
  93. unsigned long pid
  94. );
  95. extern int
  96. jmem_get_info(
  97. jpeg_mm_t* mm,
  98. jmem_info_t* info
  99. );
  100. #if defined (__cplusplus)
  101. }
  102. #endif
  103. #endif /* __CNM_VIDEO_MEMORY_MANAGEMENT_H__ */