void NO_INST v3_init_ringbuf(struct v3_ringbuf * ring, uint_t size) {
- ring->buf = V3_Malloc(size);
- ring->size = size;
+ ring->buf = V3_Malloc(size);
+ ring->size = size;
- ring->start = 0;
- ring->end = 0;
- ring->current_len = 0;
+ ring->start = 0;
+ ring->end = 0;
+ ring->current_len = 0;
}
NO_INST
struct v3_ringbuf * v3_create_ringbuf(uint_t size) {
- struct v3_ringbuf * ring = (struct v3_ringbuf *)V3_Malloc(sizeof(struct v3_ringbuf));
+ struct v3_ringbuf * ring = (struct v3_ringbuf *)V3_Malloc(sizeof(struct v3_ringbuf));
- v3_init_ringbuf(ring, size);
+ v3_init_ringbuf(ring, size);
- return ring;
+ return ring;
}
NO_INST
void v3_free_ringbuf(struct v3_ringbuf * ring) {
- V3_Free(ring->buf);
- V3_Free(ring);
+ V3_Free(ring->buf);
+ V3_Free(ring);
}
NO_INST
static inline uchar_t * get_read_ptr(struct v3_ringbuf * ring) {
- return (uchar_t *)(ring->buf + ring->start);
+ return (uchar_t *)(ring->buf + ring->start);
}
NO_INST
static inline uchar_t * get_write_ptr(struct v3_ringbuf * ring) {
- return (uchar_t *)(ring->buf + ring->end);
+ return (uchar_t *)(ring->buf + ring->end);
}
NO_INST
static inline int get_read_section_size(struct v3_ringbuf * ring) {
- return ring->size - ring->start;
+ return ring->size - ring->start;
}
NO_INST
static inline int get_write_section_size(struct v3_ringbuf * ring) {
- return ring->size - ring->end;
+ return ring->size - ring->end;
}
NO_INST
static inline int is_read_loop(struct v3_ringbuf * ring, uint_t len) {
- if ((ring->start >= ring->end) && (ring->current_len > 0)) {
- // end is past the end of the buffer
- if (get_read_section_size(ring) < len) {
- return 1;
+ if ((ring->start >= ring->end) && (ring->current_len > 0)) {
+ // end is past the end of the buffer
+ if (get_read_section_size(ring) < len) {
+ return 1;
+ }
}
- }
- return 0;
+ return 0;
}
NO_INST
static inline int is_write_loop(struct v3_ringbuf * ring, uint_t len) {
- if ((ring->end >= ring->start) && (ring->current_len < ring->size)) {
- // end is past the end of the buffer
- if (get_write_section_size(ring) < len) {
- return 1;
+ if ((ring->end >= ring->start) && (ring->current_len < ring->size)) {
+ // end is past the end of the buffer
+ if (get_write_section_size(ring) < len) {
+ return 1;
+ }
}
- }
- return 0;
+ return 0;
}
NO_INST
int v3_ringbuf_avail_space(struct v3_ringbuf * ring) {
- return ring->size - ring->current_len;
+ return ring->size - ring->current_len;
}
- NO_INST
+NO_INST
int v3_ringbuf_data_len(struct v3_ringbuf * ring) {
- return ring->current_len;
+ return ring->current_len;
}
- NO_INST
+NO_INST
int v3_ringbuf_capacity(struct v3_ringbuf * ring) {
- return ring->size;
+ return ring->size;
}
NO_INST
int v3_ringbuf_read(struct v3_ringbuf * ring, uchar_t * dst, uint_t len) {
- int read_len = 0;
- int ring_data_len = ring->current_len;
+ int read_len = 0;
+ int ring_data_len = ring->current_len;
- read_len = (len > ring_data_len) ? ring_data_len : len;
+ read_len = (len > ring_data_len) ? ring_data_len : len;
- if (is_read_loop(ring, read_len)) {
- int section_len = get_read_section_size(ring);
+ if (is_read_loop(ring, read_len)) {
+ int section_len = get_read_section_size(ring);
- memcpy(dst, get_read_ptr(ring), section_len);
- memcpy(dst + section_len, ring->buf, read_len - section_len);
+ memcpy(dst, get_read_ptr(ring), section_len);
+ memcpy(dst + section_len, ring->buf, read_len - section_len);
- ring->start = read_len - section_len;
- } else {
- memcpy(dst, get_read_ptr(ring), read_len);
+ ring->start = read_len - section_len;
+ } else {
+ memcpy(dst, get_read_ptr(ring), read_len);
- ring->start += read_len;
- }
+ ring->start += read_len;
+ }
- ring->current_len -= read_len;
+ ring->current_len -= read_len;
- return read_len;
+ return read_len;
}
- NO_INST
+NO_INST
int v3_ringbuf_peek(struct v3_ringbuf * ring, uchar_t * dst, uint_t len) {
- int read_len = 0;
- int ring_data_len = ring->current_len;
+ int read_len = 0;
+ int ring_data_len = ring->current_len;
- read_len = (len > ring_data_len) ? ring_data_len : len;
+ read_len = (len > ring_data_len) ? ring_data_len : len;
- if (is_read_loop(ring, read_len)) {
- int section_len = get_read_section_size(ring);
+ if (is_read_loop(ring, read_len)) {
+ int section_len = get_read_section_size(ring);
- memcpy(dst, get_read_ptr(ring), section_len);
- memcpy(dst + section_len, ring->buf, read_len - section_len);
- } else {
- memcpy(dst, get_read_ptr(ring), read_len);
- }
+ memcpy(dst, get_read_ptr(ring), section_len);
+ memcpy(dst + section_len, ring->buf, read_len - section_len);
+ } else {
+ memcpy(dst, get_read_ptr(ring), read_len);
+ }
- return read_len;
+ return read_len;
}
NO_INST
int v3_ringbuf_delete(struct v3_ringbuf * ring, uint_t len) {
- int del_len = 0;
- int ring_data_len = ring->current_len;
+ int del_len = 0;
+ int ring_data_len = ring->current_len;
- del_len = (len > ring_data_len) ? ring_data_len : len;
+ del_len = (len > ring_data_len) ? ring_data_len : len;
- if (is_read_loop(ring, del_len)) {
- int section_len = get_read_section_size(ring);
- ring->start = del_len - section_len;
- } else {
- ring->start += del_len;
- }
+ if (is_read_loop(ring, del_len)) {
+ int section_len = get_read_section_size(ring);
+ ring->start = del_len - section_len;
+ } else {
+ ring->start += del_len;
+ }
- ring->current_len -= del_len;
- return del_len;
+ ring->current_len -= del_len;
+ return del_len;
}
NO_INST
int v3_ringbuf_write(struct v3_ringbuf * ring, uchar_t * src, uint_t len) {
- int write_len = 0;
- int ring_avail_space = ring->size - ring->current_len;
+ int write_len = 0;
+ int ring_avail_space = ring->size - ring->current_len;
- write_len = (len > ring_avail_space) ? ring_avail_space : len;
+ write_len = (len > ring_avail_space) ? ring_avail_space : len;
- if (is_write_loop(ring, write_len)) {
- int section_len = get_write_section_size(ring);
+ if (is_write_loop(ring, write_len)) {
+ int section_len = get_write_section_size(ring);
- // PrintDebug("Write loop: write_ptr=%p, src=%p, sec_len=%d\n",
- // (void *)get_write_ptr(ring),(void*)src, section_len);
+ // PrintDebug("Write loop: write_ptr=%p, src=%p, sec_len=%d\n",
+ // (void *)get_write_ptr(ring),(void*)src, section_len);
- memcpy(get_write_ptr(ring), src, section_len);
- ring->end = 0;
+ memcpy(get_write_ptr(ring), src, section_len);
+ ring->end = 0;
- memcpy(get_write_ptr(ring), src + section_len, write_len - section_len);
+ memcpy(get_write_ptr(ring), src + section_len, write_len - section_len);
- ring->end += write_len - section_len;
- } else {
- // PrintDebug("Writing: write_ptr=%p, src=%p, write_len=%d\n",
- // (void *)get_write_ptr(ring),(void*)src, write_len);
+ ring->end += write_len - section_len;
+ } else {
+ // PrintDebug("Writing: write_ptr=%p, src=%p, write_len=%d\n",
+ // (void *)get_write_ptr(ring),(void*)src, write_len);
- memcpy(get_write_ptr(ring), src, write_len);
+ memcpy(get_write_ptr(ring), src, write_len);
- ring->end += write_len;
- }
+ ring->end += write_len;
+ }
- ring->current_len += write_len;
+ ring->current_len += write_len;
- return write_len;
+ return write_len;
}
NO_INST
void v3_print_ringbuf(struct v3_ringbuf * ring) {
- int ctr = 0;
+ int ctr = 0;
- for (ctr = 0; ctr < ring->current_len; ctr++) {
- int index = (ctr + ring->start) % ring->size;
+ for (ctr = 0; ctr < ring->current_len; ctr++) {
+ int index = (ctr + ring->start) % ring->size;
- PrintDebug("Entry %d (index=%d): %c\n", ctr, index, ring->buf[index]);
- }
+ PrintDebug("Entry %d (index=%d): %c\n", ctr, index, ring->buf[index]);
+ }
}
