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AI automatically translates all comments in the code into English (#3917)

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This commit is contained in:
alex
2024-09-19 14:53:50 +08:00
committed by GitHub
parent 046de691cb
commit 4152dcd409
279 changed files with 10602 additions and 3038 deletions
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47
ext-codec/H264.cpp
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@@ -67,24 +67,31 @@ void splitH264(
while (true) {
auto next_start = memfind(start, end - start, "\x00\x00\x01", 3);
if (next_start) {
//找到下一帧
// 找到下一帧 [AUTO-TRANSLATED:7161f54a]
// Find the next frame
if (*(next_start - 1) == 0x00) {
//这个是00 00 00 01开头
// 这个是00 00 00 01开头 [AUTO-TRANSLATED:b0d79e9e]
// This starts with 00 00 00 01
next_start -= 1;
next_prefix = 4;
} else {
//这个是00 00 01开头
// 这个是00 00 01开头 [AUTO-TRANSLATED:18ae81d8]
// This starts with 00 00 01
next_prefix = 3;
}
//记得加上本帧prefix长度
// 记得加上本帧prefix长度 [AUTO-TRANSLATED:8bde5d52]
// Remember to add the prefix length of this frame
cb(start - prefix, next_start - start + prefix, prefix);
//搜索下一帧末尾的起始位置
// 搜索下一帧末尾的起始位置 [AUTO-TRANSLATED:8976b719]
// Search for the starting position of the end of the next frame
start = next_start + next_prefix;
//记录下一帧的prefix长度
// 记录下一帧的prefix长度 [AUTO-TRANSLATED:756aee4e]
// Record the prefix length of the next frame
prefix = next_prefix;
continue;
}
//未找到下一帧,这是最后一帧
// 未找到下一帧,这是最后一帧 [AUTO-TRANSLATED:58365453]
// The next frame was not found, this is the last frame
cb(start - prefix, end - start + prefix, prefix);
break;
}
@@ -96,17 +103,20 @@ size_t prefixSize(const char *ptr, size_t len) {
}
if (ptr[0] != 0x00 || ptr[1] != 0x00) {
//不是0x00 00开头
// 不是0x00 00开头 [AUTO-TRANSLATED:c406f0da]
// Not 0x00 00 at the beginning
return 0;
}
if (ptr[2] == 0x00 && ptr[3] == 0x01) {
//是0x00 00 00 01
// 是0x00 00 00 01 [AUTO-TRANSLATED:70caae72]
// It is 0x00 00 00 01
return 4;
}
if (ptr[2] == 0x01) {
//是0x00 00 01
// 是0x00 00 01 [AUTO-TRANSLATED:78b4a3c9]
// It is 0x00 00 01
return 3;
}
return 0;
@@ -148,7 +158,8 @@ bool H264Track::inputFrame(const Frame::Ptr &frame) {
return inputFrame_l(frame);
}
//非I/B/P帧情况下，split一下，防止多个帧粘合在一起
// 非I/B/P帧情况下，split一下，防止多个帧粘合在一起 [AUTO-TRANSLATED:b69c6e75]
// In the case of non-I/B/P frames, split it to prevent multiple frames from sticking together
bool ret = false;
splitH264(frame->data(), frame->size(), frame->prefixSize(), [&](const char *ptr, size_t len, size_t prefix) {
H264FrameInternal::Ptr sub_frame = std::make_shared<H264FrameInternal>(frame, (char *)ptr, len, prefix);
@@ -267,13 +278,15 @@ bool H264Track::inputFrame_l(const Frame::Ptr &frame) {
break;
}
default:
// 避免识别不出关键帧
// 避免识别不出关键帧 [AUTO-TRANSLATED:8eb84679]
// Avoid not being able to recognize keyframes
if (_latest_is_config_frame && !frame->dropAble()) {
if (!frame->keyFrame()) {
const_cast<Frame::Ptr &>(frame) = std::make_shared<FrameCacheAble>(frame, true);
}
}
// 判断是否是I帧, 并且如果是,那判断前面是否插入过config帧, 如果插入过就不插入了
// 判断是否是I帧, 并且如果是,那判断前面是否插入过config帧, 如果插入过就不插入了 [AUTO-TRANSLATED:40733cd8]
// Determine if it is an I frame, and if it is, determine if a config frame has been inserted before, and if it has been inserted, do not insert it
if (frame->keyFrame() && !_latest_is_config_frame) {
insertConfigFrame(frame);
}
@@ -313,6 +326,11 @@ public:
Single NAI Unit Mode = 0. // Single NAI mode (Only nals from 1-23 are allowed)
Non Interleaved Mode = 1，// Non-interleaved Mode: 1-23，24 (STAP-A)，28 (FU-A) are allowed
Interleaved Mode = 2, // 25 (STAP-B)，26 (MTAP16)，27 (MTAP24)，28 (EU-A)，and 29 (EU-B) are allowed.
Single NAI Unit Mode = 0. // Single NAI mode (Only nals from 1-23 are allowed)
Non Interleaved Mode = 1，// Non-interleaved Mode: 1-23，24 (STAP-A)，28 (FU-A) are allowed
Interleaved Mode = 2, // 25 (STAP-B)，26 (MTAP16)，27 (MTAP24)，28 (EU-A)，and 29 (EU-B) are allowed.
*
* [AUTO-TRANSLATED:6166738f]
**/
GET_CONFIG(bool, h264_stap_a, Rtp::kH264StapA);
_printer << "a=fmtp:" << payload_type << " packetization-mode=" << h264_stap_a << "; profile-level-id=";
@@ -365,7 +383,8 @@ Track::Ptr getTrackBySdp(const SdpTrack::Ptr &track) {
auto sps = decodeBase64(base64_SPS);
auto pps = decodeBase64(base64_PPS);
if (sps.empty() || pps.empty()) {
//如果sdp里面没有sps/pps,那么可能在后续的rtp里面恢复出sps/pps
// 如果sdp里面没有sps/pps,那么可能在后续的rtp里面恢复出sps/pps [AUTO-TRANSLATED:60f03d45]
// If there is no sps/pps in the sdp, then it may be possible to recover the sps/pps in the subsequent rtp
return std::make_shared<H264Track>();
}
return std::make_shared<H264Track>(sps, pps, 0, 0);