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68 lines
1.7 KiB
C
68 lines
1.7 KiB
C
9 months ago
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/**
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* @file smm.h
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*
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*/
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#ifndef SMM_H
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#define SMM_H
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#include <stddef.h>
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#include <stdbool.h>
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#define SMM_FD_NAME "lvgl-wayland"
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#define SMM_POOL_TAGS (1)
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#define SMM_BUFFER_TAGS (2)
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#define SMM_GROUP_TAGS (1)
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#define SMM_POOL_PROPERTIES(p) ((const struct smm_pool_properties *)(p))
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#define SMM_BUFFER_PROPERTIES(b) ((const struct smm_buffer_properties *)(b))
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#define SMM_GROUP_PROPERTIES(g) ((const struct smm_group_properties *)(g))
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#define SMM_TAG(o, n, v) \
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do { \
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void **smm_tag = (void **)((char *)o + (n * sizeof(void *))); \
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*smm_tag = (v); \
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} while(0)
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typedef void smm_pool_t;
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typedef void smm_buffer_t;
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typedef void smm_group_t;
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struct smm_events {
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void *ctx;
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bool (*new_pool)(void *ctx, smm_pool_t *pool);
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void (*expand_pool)(void *ctx, smm_pool_t *pool);
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void (*free_pool)(void *ctx, smm_pool_t *pool);
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bool (*new_buffer)(void *ctx, smm_buffer_t *buf);
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bool (*init_buffer)(void *ctx, smm_buffer_t *buf);
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void (*free_buffer)(void *ctx, smm_buffer_t *buf);
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};
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struct smm_pool_properties {
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void *tag[SMM_POOL_TAGS];
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size_t size;
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int fd;
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};
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struct smm_buffer_properties {
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void *tag[SMM_BUFFER_TAGS];
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smm_group_t *const group;
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smm_pool_t *const pool;
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size_t offset;
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};
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struct smm_group_properties {
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void *tag[SMM_GROUP_TAGS];
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};
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void smm_init(struct smm_events *evs);
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void smm_setctx(void *ctx);
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void smm_deinit(void);
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smm_group_t *smm_create(void);
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void smm_resize(smm_group_t *grp, size_t sz);
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void smm_destroy(smm_group_t *grp);
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smm_buffer_t *smm_acquire(smm_group_t *grp);
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void *smm_map(smm_buffer_t *buf);
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void smm_release(smm_buffer_t *buf);
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smm_buffer_t *smm_latest(smm_group_t *grp);
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smm_buffer_t *smm_next(smm_buffer_t *buf);
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#endif
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