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

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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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33
src/Record/MP4Muxer.cpp
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@@ -85,21 +85,26 @@ void MP4MuxerInterface::flush() {
bool MP4MuxerInterface::inputFrame(const Frame::Ptr &frame) {
auto it = _tracks.find(frame->getIndex());
if (it == _tracks.end()) {
// 该Track不存在或初始化失败
// 该Track不存在或初始化失败 [AUTO-TRANSLATED:316597dc]
// This Track does not exist or initialization failed
return false;
}
if (!_started) {
// 该逻辑确保含有视频时，第一帧为关键帧
// 该逻辑确保含有视频时，第一帧为关键帧 [AUTO-TRANSLATED:04f177fb]
// This logic ensures that the first frame is a keyframe when there is video
if (_have_video && !frame->keyFrame()) {
// 含有视频，但是不是关键帧，那么前面的帧丢弃
// 含有视频，但是不是关键帧，那么前面的帧丢弃 [AUTO-TRANSLATED:5f0ba99e]
// Contains video, but not a keyframe, then the previous frames are discarded
return false;
}
// 开始写文件
// 开始写文件 [AUTO-TRANSLATED:bc3f11e2]
// Start writing the file
_started = true;
}
// fmp4封装超过一定I帧间隔，强制刷新segment，防止内存上涨
// fmp4封装超过一定I帧间隔，强制刷新segment，防止内存上涨 [AUTO-TRANSLATED:0be6ef15]
// fmp4 encapsulation exceeds a certain I-frame interval, force refresh segment to prevent memory increase
if (frame->getTrackType() == TrackVideo && _mov_writter->fmp4) {
if (frame->keyFrame()) {
_non_iframe_video_count = 0;
@@ -113,12 +118,14 @@ bool MP4MuxerInterface::inputFrame(const Frame::Ptr &frame) {
}
}
// mp4文件时间戳需要从0开始
// mp4文件时间戳需要从0开始 [AUTO-TRANSLATED:c963b841]
// The mp4 file timestamp needs to start from 0
auto &track = it->second;
switch (frame->getCodecId()) {
case CodecH264:
case CodecH265: {
// 这里的代码逻辑是让SPS、PPS、IDR这些时间戳相同的帧打包到一起当做一个帧处理，
// 这里的代码逻辑是让SPS、PPS、IDR这些时间戳相同的帧打包到一起当做一个帧处理， [AUTO-TRANSLATED:edf57c32]
// The code logic here is to package frames with the same timestamp, such as SPS, PPS, and IDR, as one frame,
track.merger.inputFrame(frame, [this, &track](uint64_t dts, uint64_t pts, const Buffer::Ptr &buffer, bool have_idr) {
int64_t dts_out, pts_out;
track.stamp.revise(dts, pts, dts_out, pts_out);
@@ -190,7 +197,8 @@ bool MP4MuxerInterface::addTrack(const Track::Ptr &track) {
_tracks[track->getIndex()].track_id = track_id;
}
// 尝试音视频同步
// 尝试音视频同步 [AUTO-TRANSLATED:5f8b8040]
// Try audio and video synchronization
stampSync();
return true;
}
@@ -222,16 +230,19 @@ void MP4MuxerMemory::resetTracks() {
bool MP4MuxerMemory::inputFrame(const Frame::Ptr &frame) {
if (_init_segment.empty()) {
// 尚未生成init segment
// 尚未生成init segment [AUTO-TRANSLATED:b4baa65f]
// Init segment has not been generated yet
return false;
}
// flush切片
// flush切片 [AUTO-TRANSLATED:c4358dce]
// Flush segment
saveSegment();
auto data = _memory_file->getAndClearMemory();
if (!data.empty()) {
// 输出切片数据
// 输出切片数据 [AUTO-TRANSLATED:4bc994c9]
// Output segment data
onSegmentData(std::move(data), _last_dst, _key_frame);
_key_frame = false;
}