mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
synced 2024-11-23 11:17:09 +08:00
48 lines
1.5 KiB
C++
48 lines
1.5 KiB
C++
#include "G711Rtp.h"
|
|
|
|
namespace mediakit {
|
|
|
|
G711RtpEncoder::G711RtpEncoder(CodecId codec, uint32_t channels){
|
|
_cache_frame = FrameImp::create();
|
|
_cache_frame->_codec_id = codec;
|
|
_channels = channels;
|
|
}
|
|
|
|
bool G711RtpEncoder::inputFrame(const Frame::Ptr &frame) {
|
|
auto dur = (_cache_frame->size() - _cache_frame->prefixSize()) / (8 * _channels);
|
|
auto next_pts = _cache_frame->pts() + dur;
|
|
if (next_pts == 0) {
|
|
_cache_frame->_pts = frame->pts();
|
|
} else {
|
|
if ((next_pts + 20) < frame->pts()) { // 有丢包超过20ms
|
|
_cache_frame->_pts = frame->pts() - dur;
|
|
}
|
|
}
|
|
_cache_frame->_buffer.append(frame->data() + frame->prefixSize(), frame->size() - frame->prefixSize());
|
|
|
|
auto stamp = _cache_frame->pts();
|
|
auto ptr = _cache_frame->data() + _cache_frame->prefixSize();
|
|
auto len = _cache_frame->size() - _cache_frame->prefixSize();
|
|
auto remain_size = len;
|
|
auto max_size = 160 * _channels; // 20 ms per rtp
|
|
int n = 0;
|
|
bool mark = false;
|
|
while (remain_size >= max_size) {
|
|
size_t rtp_size;
|
|
if (remain_size >= max_size) {
|
|
rtp_size = max_size;
|
|
} else {
|
|
break;
|
|
}
|
|
n++;
|
|
stamp += 20;
|
|
RtpCodec::inputRtp(getRtpInfo().makeRtp(TrackAudio, ptr, rtp_size, mark, stamp), false);
|
|
ptr += rtp_size;
|
|
remain_size -= rtp_size;
|
|
}
|
|
_cache_frame->_buffer.erase(0, n * max_size);
|
|
_cache_frame->_pts += 20 * n;
|
|
return len > 0;
|
|
}
|
|
|
|
} // namespace mediakit
|