#include "axl_rle.h"
#include "axl_vlq.h"
#include "axl_memory.h"

u32 axl_rle_encode(const u8* src, u32 src_size, u8* dst, u32 dst_size)
{
    u8 vlq_buff[AXL_VLQ_MAX_LEN];
    const u8* head = src;
    u32 used_size = 0;

    while(head < src + src_size)
    {
        const u8 value = *head;
        u32 count = 0;

        while(head < src + src_size && *head == value)
        {
            count++;
            head++;
        }

        u32 vlq_len = axl_vlq_encode(count, vlq_buff);
        u32 req_size = vlq_len + 1;

        if(req_size + used_size > dst_size)
        {
            return 0;
        }

        axl_memcpy(dst, vlq_buff, vlq_len);
        dst += vlq_len;
        axl_memcpy(dst, &value, 1);
        dst += 1;

        used_size += req_size;
    }

    return used_size;
}

u32 axl_rle_decode(const u8* src, u32 src_size, u8* dst, u32 dst_size)
{

}