huxi
65 lines
1.8 KiB
C
65 lines
1.8 KiB
C
#ifdef SUPPORT_MS_EXTENSIONS
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#pragma bss_seg(".frame_length_adaptive.data.bss")
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#pragma data_seg(".frame_length_adaptive.data")
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#pragma const_seg(".frame_length_adaptive.text.const")
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#pragma code_seg(".frame_length_adaptive.text")
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#endif
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#include "frame_length_adaptive.h"
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int frame_length_adaptive_run(void *_hdl, void *in_data, void *out_data, u16 in_len)
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{
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struct frame_length_adaptive_hdl *hdl = (struct frame_length_adaptive_hdl *)_hdl;
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if (!hdl) {
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return 0;
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}
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int wlen, rlen = 0;
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wlen = cbuf_write(&hdl->sw_cbuf, in_data, in_len);
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if (wlen != in_len) {
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putchar('w');
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}
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if (cbuf_get_data_len(&hdl->sw_cbuf) >= hdl->adj_len) {
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rlen = cbuf_read(&hdl->sw_cbuf, out_data, hdl->adj_len);
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if (rlen != hdl->adj_len) {
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putchar('W');
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}
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}
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return rlen;
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}
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/* adj_len : 需要输出的数据长度
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* in_len : 输入的数据长度
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* */
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struct frame_length_adaptive_hdl *frame_length_adaptive_open(int adj_len, int in_len)
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{
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struct frame_length_adaptive_hdl *hdl = zalloc(sizeof(struct frame_length_adaptive_hdl));
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if (!hdl) {
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return NULL;
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}
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printf("frame_length_adaptive open---------adj_len = %d\n", adj_len);
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int cbuf_len = adj_len > in_len ? adj_len : in_len;
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hdl->adj_len = adj_len;
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hdl->sw_buf = zalloc(cbuf_len * 2);
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cbuf_init(&hdl->sw_cbuf, hdl->sw_buf, cbuf_len * 2);
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u32 len;
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void *obuf = cbuf_write_alloc(&hdl->sw_cbuf, &len); //先填一帧的数据,
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memset(obuf, 0, adj_len);
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cbuf_write_updata(&hdl->sw_cbuf, adj_len);
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return hdl;
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}
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void frame_length_adaptive_close(void *_hdl)
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{
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struct frame_length_adaptive_hdl *hdl = (struct frame_length_adaptive_hdl *)_hdl;
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if (hdl) {
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if (hdl->sw_buf) {
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free(hdl->sw_buf);
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}
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free(hdl);
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}
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}
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