35 static void circle_buf_prepare_empty(lv_circle_buf_t * circle_buf);
55     lv_circle_buf_t * circle_buf = lv_malloc(sizeof(lv_circle_buf_t));  in lv_circle_buf_create()  local
56     LV_ASSERT_MALLOC(circle_buf);  in lv_circle_buf_create()
58     if(circle_buf == NULL) {  in lv_circle_buf_create()
62     lv_array_init(&circle_buf->array, capacity, element_size);  in lv_circle_buf_create()
63     circle_buf->head = 0;  in lv_circle_buf_create()
64     circle_buf->tail = 0;  in lv_circle_buf_create()
65     circle_buf->inner_alloc = true;  in lv_circle_buf_create()
67     circle_buf_prepare_empty(circle_buf);  in lv_circle_buf_create()
69     return circle_buf;  in lv_circle_buf_create()
76     lv_circle_buf_t * circle_buf = lv_malloc(sizeof(lv_circle_buf_t));  in lv_circle_buf_create_from_buf()  local
77     LV_ASSERT_MALLOC(circle_buf);  in lv_circle_buf_create_from_buf()
79     if(circle_buf == NULL) {  in lv_circle_buf_create_from_buf()
83     lv_array_init_from_buf(&circle_buf->array, buf, capacity, element_size);  in lv_circle_buf_create_from_buf()
84     circle_buf->head = 0;  in lv_circle_buf_create_from_buf()
85     circle_buf->tail = 0;  in lv_circle_buf_create_from_buf()
86     circle_buf->inner_alloc = false;  in lv_circle_buf_create_from_buf()
88     circle_buf_prepare_empty(circle_buf);  in lv_circle_buf_create_from_buf()
90     return circle_buf;  in lv_circle_buf_create_from_buf()
100     lv_circle_buf_t * circle_buf = lv_malloc(sizeof(lv_circle_buf_t));  in lv_circle_buf_create_from_array()  local
101     LV_ASSERT_MALLOC(circle_buf);  in lv_circle_buf_create_from_array()
103     if(circle_buf == NULL) {  in lv_circle_buf_create_from_array()
107     circle_buf->array = *array;  in lv_circle_buf_create_from_array()
108     circle_buf->head = 0;  in lv_circle_buf_create_from_array()
109     circle_buf->tail = 0;  in lv_circle_buf_create_from_array()
110     circle_buf->inner_alloc = false;  in lv_circle_buf_create_from_array()
112     circle_buf_prepare_empty(circle_buf);  in lv_circle_buf_create_from_array()
114     return circle_buf;  in lv_circle_buf_create_from_array()
117 lv_result_t lv_circle_buf_resize(lv_circle_buf_t * circle_buf, const uint32_t capacity)  in lv_circle_buf_resize()  argument
119     LV_ASSERT_NULL(circle_buf);  in lv_circle_buf_resize()
121     if(lv_array_resize(&circle_buf->array, capacity) == false) {  in lv_circle_buf_resize()
125     circle_buf->head = 0;  in lv_circle_buf_resize()
126     circle_buf->tail = 0;  in lv_circle_buf_resize()
128     circle_buf_prepare_empty(circle_buf);  in lv_circle_buf_resize()
133 void lv_circle_buf_destroy(lv_circle_buf_t * circle_buf)  in lv_circle_buf_destroy()  argument
135     LV_ASSERT_NULL(circle_buf);  in lv_circle_buf_destroy()
137     lv_array_deinit(&circle_buf->array);  in lv_circle_buf_destroy()
139     lv_free(circle_buf);  in lv_circle_buf_destroy()
142 uint32_t lv_circle_buf_size(const lv_circle_buf_t * circle_buf)  in lv_circle_buf_size()  argument
144     LV_ASSERT_NULL(circle_buf);  in lv_circle_buf_size()
146     return circle_buf->tail - circle_buf->head;  in lv_circle_buf_size()
149 uint32_t lv_circle_buf_capacity(const lv_circle_buf_t * circle_buf)  in lv_circle_buf_capacity()  argument
151     LV_ASSERT_NULL(circle_buf);  in lv_circle_buf_capacity()
153     return lv_array_capacity(&circle_buf->array);  in lv_circle_buf_capacity()
156 uint32_t lv_circle_buf_remain(const lv_circle_buf_t * circle_buf)  in lv_circle_buf_remain()  argument
158     LV_ASSERT_NULL(circle_buf);  in lv_circle_buf_remain()
160     return lv_circle_buf_capacity(circle_buf) - lv_circle_buf_size(circle_buf);  in lv_circle_buf_remain()
163 bool lv_circle_buf_is_empty(const lv_circle_buf_t * circle_buf)  in lv_circle_buf_is_empty()  argument
165     LV_ASSERT_NULL(circle_buf);  in lv_circle_buf_is_empty()
167     return !lv_circle_buf_size(circle_buf);  in lv_circle_buf_is_empty()
170 bool lv_circle_buf_is_full(const lv_circle_buf_t * circle_buf)  in lv_circle_buf_is_full()  argument
172     LV_ASSERT_NULL(circle_buf);  in lv_circle_buf_is_full()
174     return !lv_circle_buf_remain(circle_buf);  in lv_circle_buf_is_full()
177 void lv_circle_buf_reset(lv_circle_buf_t * circle_buf)  in lv_circle_buf_reset()  argument
179     LV_ASSERT_NULL(circle_buf);  in lv_circle_buf_reset()
181     lv_array_clear(&circle_buf->array);  in lv_circle_buf_reset()
182     circle_buf->head = 0;  in lv_circle_buf_reset()
183     circle_buf->tail = 0;  in lv_circle_buf_reset()
186 void * lv_circle_buf_head(const lv_circle_buf_t * circle_buf)  in lv_circle_buf_head()  argument
188     LV_ASSERT_NULL(circle_buf);  in lv_circle_buf_head()
190     return lv_array_at(&circle_buf->array,  in lv_circle_buf_head()
191                        circle_buf->head % lv_circle_buf_capacity(circle_buf));  in lv_circle_buf_head()
194 void * lv_circle_buf_tail(const lv_circle_buf_t * circle_buf)  in lv_circle_buf_tail()  argument
196     LV_ASSERT_NULL(circle_buf);  in lv_circle_buf_tail()
198     return lv_array_at(&circle_buf->array,  in lv_circle_buf_tail()
199                        circle_buf->tail % lv_circle_buf_capacity(circle_buf));  in lv_circle_buf_tail()
202 lv_result_t lv_circle_buf_read(lv_circle_buf_t * circle_buf, void * data)  in lv_circle_buf_read()  argument
204     LV_ASSERT_NULL(circle_buf);  in lv_circle_buf_read()
206     if(lv_circle_buf_is_empty(circle_buf)) {  in lv_circle_buf_read()
207         circle_buf->head = 0;  in lv_circle_buf_read()
208         circle_buf->tail = 0;  in lv_circle_buf_read()
212     lv_circle_buf_peek_at(circle_buf, 0, data);  in lv_circle_buf_read()
213     circle_buf->head++;  in lv_circle_buf_read()
218 lv_result_t lv_circle_buf_write(lv_circle_buf_t * circle_buf, const void * data)  in lv_circle_buf_write()  argument
220     LV_ASSERT_NULL(circle_buf);  in lv_circle_buf_write()
222     if(lv_circle_buf_is_full(circle_buf)) {  in lv_circle_buf_write()
226 …  lv_array_assign(&circle_buf->array, circle_buf->tail % lv_circle_buf_capacity(circle_buf), data);  in lv_circle_buf_write()
227     circle_buf->tail++;  in lv_circle_buf_write()
232 uint32_t lv_circle_buf_fill(lv_circle_buf_t * circle_buf, uint32_t count, lv_circle_buf_fill_cb_t f…  in lv_circle_buf_fill()  argument
235     LV_ASSERT_NULL(circle_buf);  in lv_circle_buf_fill()
239     while(count > 0 && !lv_circle_buf_is_full(circle_buf)) {  in lv_circle_buf_fill()
240         void * data = lv_circle_buf_tail(circle_buf);  in lv_circle_buf_fill()
241 …    if(fill_cb(data, circle_buf->array.element_size, (int32_t)filled, user_data) == LV_RESULT_OK) {  in lv_circle_buf_fill()
242             circle_buf->tail++;  in lv_circle_buf_fill()
253 lv_result_t lv_circle_buf_skip(lv_circle_buf_t * circle_buf)  in lv_circle_buf_skip()  argument
255     LV_ASSERT_NULL(circle_buf);  in lv_circle_buf_skip()
257     if(lv_circle_buf_is_empty(circle_buf)) {  in lv_circle_buf_skip()
258         circle_buf->head = 0;  in lv_circle_buf_skip()
259         circle_buf->tail = 0;  in lv_circle_buf_skip()
263     circle_buf->head++;  in lv_circle_buf_skip()
268 lv_result_t lv_circle_buf_peek(const lv_circle_buf_t * circle_buf, void * data)  in lv_circle_buf_peek()  argument
270     LV_ASSERT_NULL(circle_buf);  in lv_circle_buf_peek()
273     return lv_circle_buf_peek_at(circle_buf, 0, data);  in lv_circle_buf_peek()
276 lv_result_t lv_circle_buf_peek_at(const lv_circle_buf_t * circle_buf, const uint32_t index, void * …  in lv_circle_buf_peek_at()  argument
278     LV_ASSERT_NULL(circle_buf);  in lv_circle_buf_peek_at()
281 …const uint32_t real_index = (index % lv_circle_buf_size(circle_buf) + circle_buf->head) % lv_circl…  in lv_circle_buf_peek_at()
282                                     circle_buf);  in lv_circle_buf_peek_at()
283     lv_memcpy(data, lv_array_at(&circle_buf->array, real_index), circle_buf->array.element_size);  in lv_circle_buf_peek_at()
292 static void circle_buf_prepare_empty(lv_circle_buf_t * circle_buf)  in circle_buf_prepare_empty()  argument
294 …const uint32_t required = lv_array_capacity(&circle_buf->array) - lv_array_size(&circle_buf->array…  in circle_buf_prepare_empty()
295     for(uint32_t i = 0; i < required; i++) lv_array_push_back(&circle_buf->array, NULL);  in circle_buf_prepare_empty()