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支持rtsp回放控制 (#4691)

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目前对接过很多第三方系统（海康ISC、大华ICC、华为IVS、中维等）都支持rtsp回放，觉得有必要支持该功能
This commit is contained in:
XiaoYan Lin
2026-04-01 20:42:32 +08:00
committed by GitHub
parent 66b94b266c
commit c3c0fb4448
6 changed files with 186 additions and 12 deletions
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74
src/Rtsp/RtspPlayer.cpp
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@@ -21,6 +21,12 @@
#include <cmath>
#include <iomanip>
#include <set>
#include <cstring>
#include <ctime>
#if defined(_WIN32)
#include "Util/strptime_win.h"
#endif
using namespace toolkit;
using namespace std;
@@ -212,6 +218,20 @@ void RtspPlayer::handleResDESCRIBE(const Parser &parser) {
// Parse SDP
SdpParser sdpParser(parser.content());
// 保存 range 信息（从第一个 track 获取）
auto tracks = sdpParser.getAvailableTrack();
if (!tracks.empty()) {
auto title_track = sdpParser.getTrack(TrackTitle);
if (title_track && !title_track->_range_type.empty()) {
_range_type = title_track->_range_type;
_range_start_str = title_track->_range_start_str;
_range_end_str = title_track->_range_end_str;
} else if (!tracks.empty() && !tracks[0]->_range_type.empty()) {
_range_type = tracks[0]->_range_type;
_range_start_str = tracks[0]->_range_start_str;
_range_end_str = tracks[0]->_range_end_str;
}
}
_control_url = sdpParser.getControlUrl(_content_base);
string sdp;
@@ -468,10 +488,52 @@ void RtspPlayer::sendPause(int type, uint32_t seekMS) {
// Start or pause RTSP
switch (type) {
case type_pause: sendRtspRequest("PAUSE", _control_url, {}); break;
case type_play:
case type_seek:
sendRtspRequest("PLAY", _control_url, { "Range", StrPrinter << "npt=" << setiosflags(ios::fixed) << setprecision(2) << seekMS / 1000.0 << "-" });
break;
case type_play: sendRtspRequest("PLAY", _content_base); break;
case type_seek: {
std::string range_header;
if (_range_type == "clock" && !_range_start_str.empty()) {
// clock 格式：需要计算新的时间
// 解析起始时间：20251123T000000Z
struct tm tm_start;
const char *start_str = _range_start_str.c_str();
if (strptime(start_str, "%Y%m%dT%H%M%SZ", &tm_start) != nullptr) {
// 转换为 time_t，加上 seekMS 毫秒
#if defined(_WIN32)
time_t start_time = _mkgmtime(&tm_start);
#else
time_t start_time = timegm(&tm_start);
#endif
start_time += seekMS / 1000; // 加上秒数
// 格式化新的时间
struct tm tm_new;
#if defined(_WIN32)
auto gmtime_ret = gmtime_s(&tm_new, &start_time);
if (gmtime_ret == 0)
#else
auto gmtime_ret = gmtime_r(&start_time, &tm_new);
if (gmtime_ret != nullptr)
#endif
{
char new_time[32];
strftime(new_time, sizeof(new_time), "%Y%m%dT%H%M%SZ", &tm_new);
// 构建 Range 头
range_header = StrPrinter << "clock=" << new_time << "-" << _range_end_str;
} else {
// 解析失败，回退到 npt 格式
range_header = StrPrinter << "npt=" << setiosflags(ios::fixed) << setprecision(2) << seekMS / 1000.0 << "-";
}
} else {
// 解析失败，回退到 npt 格式
range_header = StrPrinter << "npt=" << setiosflags(ios::fixed) << setprecision(2) << seekMS / 1000.0 << "-";
}
} else {
// npt 格式或其他格式
range_header = StrPrinter << "npt=" << setiosflags(ios::fixed) << setprecision(2) << seekMS / 1000.0 << "-";
}
sendRtspRequest("PLAY", _control_url, { "Range", range_header });
} break;
case type_speed: speed(_speed); break;
default:
WarnL << "unknown type : " << type;
@@ -488,6 +550,10 @@ void RtspPlayer::speed(float speed) {
sendRtspRequest("PLAY", _control_url, { "Scale", StrPrinter << speed });
}
void RtspPlayer::seekTo(uint32_t pos) {
seekToMilliSecond(pos * 1000);
}
void RtspPlayer::handleResPAUSE(const Parser &parser, int type) {
if (parser.status() != "200") {
switch (type) {