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HLS: hls播放解决播放下一个切片导致数据丢失的bug： #1294

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This commit is contained in:
ziyue 2021-12-24 13:29:16 +08:00
parent 0bf75529a2
commit c25ff6400f
4 changed files with 119 additions and 104 deletions
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114
src/Http/HlsPlayer.cpp
View File

@ -9,6 +9,7 @@
*/
#include "HlsPlayer.h"
namespace mediakit {
HlsPlayer::HlsPlayer(const EventPoller::Ptr &poller) {
@ -28,7 +29,7 @@ void HlsPlayer::play_l(){
teardown_l(SockException(Err_shutdown, "所有hls url都尝试播放失败!"));
return;
}
if (alive() && _waiting_response) {
if (waitResponse()) {
return;
}
float playTimeOutSec = (*this)[Client::kTimeoutMS].as<int>() / 1000.0f;
@ -36,7 +37,6 @@ void HlsPlayer::play_l(){
if (!(*this)[kNetAdapter].empty()) {
setNetAdapter((*this)[kNetAdapter]);
}
_waiting_response = true;
sendRequest(_m3u8_list.back(), playTimeOutSec);
}
@ -51,69 +51,73 @@ void HlsPlayer::teardown() {
teardown_l(SockException(Err_shutdown, "teardown"));
}
void HlsPlayer::playNextTs(bool force){
void HlsPlayer::playNextTs() {
if (_ts_list.empty()) {
//播放列表为空，那么立即重新下载m3u8文件
_timer.reset();
play_l();
return;
}
if (!force && _http_ts_player && _http_ts_player->alive()) {
if (_http_ts_player && _http_ts_player->waitResponse()) {
//播放器目前还存活，正在下载中
return;
}
auto ts_duration = _ts_list.front().duration * 1000;
weak_ptr<HlsPlayer> weakSelf = dynamic_pointer_cast<HlsPlayer>(shared_from_this());
std::shared_ptr<Ticker> ticker(new Ticker);
weak_ptr<HlsPlayer> weak_self = dynamic_pointer_cast<HlsPlayer>(shared_from_this());
if (!_http_ts_player) {
_http_ts_player = std::make_shared<HttpTSPlayer>(getPoller(), false);
_http_ts_player->setOnCreateSocket([weakSelf](const EventPoller::Ptr &poller) {
auto strongSelf = weakSelf.lock();
if (strongSelf) {
return strongSelf->createSocket();
_http_ts_player->setOnCreateSocket([weak_self](const EventPoller::Ptr &poller) {
auto strong_self = weak_self.lock();
if (strong_self) {
return strong_self->createSocket();
}
return Socket::createSocket(poller, true);
});
_http_ts_player->setOnDisconnect([weakSelf, ticker, ts_duration](const SockException &err) {
auto strongSelf = weakSelf.lock();
if (!strongSelf) {
return;
}
auto delay = ts_duration - 500 - ticker->elapsedTime();
if (delay <= 0) {
//播放这个ts切片花费了太长时间，我们立即下一个切片的播放
strongSelf->playNextTs(true);
} else {
//下一个切片慢点播放
strongSelf->_timer_ts.reset(new Timer(delay / 1000.0f, [weakSelf]() {
auto strongSelf = weakSelf.lock();
if (!strongSelf) {
return false;
}
strongSelf->playNextTs(true);
return false;
}, strongSelf->getPoller()));
}
});
_http_ts_player->setOnPacket([weakSelf](const char *data, size_t len) {
auto strongSelf = weakSelf.lock();
if (!strongSelf) {
_http_ts_player->setOnPacket([weak_self](const char *data, size_t len) {
auto strong_self = weak_self.lock();
if (!strong_self) {
return;
}
//收到ts包
strongSelf->onPacket_l(data, len);
strong_self->onPacket_l(data, len);
});
_http_ts_player->setMethod("GET");
if (!(*this)[kNetAdapter].empty()) {
_http_ts_player->setNetAdapter((*this)[Client::kNetAdapter]);
}
}
_http_ts_player->sendRequest(_ts_list.front().url, 2 * _ts_list.front().duration);
Ticker ticker;
auto url = _ts_list.front().url;
auto duration = _ts_list.front().duration;
_ts_list.pop_front();
_http_ts_player->setOnComplete([weak_self, ticker, duration, url](const SockException &err) {
auto strong_self = weak_self.lock();
if (!strong_self) {
return;
}
if (err) {
WarnL << "download ts segment " << url << " failed:" << err.what();
}
//提前半秒下载好
auto delay = duration - ticker.elapsedTime() / 1000.0f - 0.5;
if (delay <= 0) {
//延时最小10ms
delay = 10;
}
//延时下载下一个切片
strong_self->_timer_ts.reset(new Timer(delay / 1000.0f, [weak_self]() {
auto strong_self = weak_self.lock();
if (strong_self) {
strong_self->playNextTs();
}
return false;
}, strong_self->getPoller()));
});
_http_ts_player->setMethod("GET");
_http_ts_player->sendRequest(url, 2 * duration);
}
void HlsPlayer::onParsed(bool is_m3u8_inner, int64_t sequence, const map<int, ts_segment> &ts_map) {
@ -146,12 +150,12 @@ void HlsPlayer::onParsed(bool is_m3u8_inner,int64_t sequence,const map<int,ts_se
}
_timer.reset();
weak_ptr<HlsPlayer> weakSelf = dynamic_pointer_cast<HlsPlayer>(shared_from_this());
weak_ptr<HlsPlayer> weak_self = dynamic_pointer_cast<HlsPlayer>(shared_from_this());
auto url = ts_map.rbegin()->second.url;
getPoller()->async([weakSelf, url]() {
auto strongSelf = weakSelf.lock();
if (strongSelf) {
strongSelf->play(url);
getPoller()->async([weak_self, url]() {
auto strong_self = weak_self.lock();
if (strong_self) {
strong_self->play(url);
}
}, false);
}
@ -163,8 +167,8 @@ ssize_t HlsPlayer::onResponseHeader(const string &status, const HttpClient::Http
teardown_l(SockException(Err_shutdown, StrPrinter << "bad http status code:" + status));
return 0;
}
auto contet_type = const_cast< HttpClient::HttpHeader &>(headers)["Content-Type"];
_is_m3u8 = (contet_type.find("application/vnd.apple.mpegurl") == 0);
auto content_type = const_cast< HttpClient::HttpHeader &>(headers)["Content-Type"];
_is_m3u8 = (content_type.find("application/vnd.apple.mpegurl") == 0);
return -1;
}
@ -177,13 +181,12 @@ void HlsPlayer::onResponseBody(const char *buf, size_t size, size_t recvedSize,
}
void HlsPlayer::onResponseCompleted() {
_waiting_response = false;
if (HlsParser::parse(getUrl(), _m3u8)) {
playDelay();
if (_first) {
_first = false;
onPlayResult(SockException(Err_success, "play success"));
}
playDelay();
} else {
teardown_l(SockException(Err_shutdown, "解析m3u8文件失败"));
}
@ -213,7 +216,6 @@ float HlsPlayer::delaySecond() {
}
void HlsPlayer::onDisconnect(const SockException &ex) {
_waiting_response = false;
if (_first) {
//第一次失败，则播放失败
_first = false;
@ -246,11 +248,11 @@ bool HlsPlayer::onRedirectUrl(const string &url,bool temporary) {
}
void HlsPlayer::playDelay() {
weak_ptr<HlsPlayer> weakSelf = dynamic_pointer_cast<HlsPlayer>(shared_from_this());
_timer.reset(new Timer(delaySecond(), [weakSelf]() {
auto strongSelf = weakSelf.lock();
if (strongSelf) {
strongSelf->play_l();
weak_ptr<HlsPlayer> weak_self = dynamic_pointer_cast<HlsPlayer>(shared_from_this());
_timer.reset(new Timer(delaySecond(), [weak_self]() {
auto strong_self = weak_self.lock();
if (strong_self) {
strong_self->play_l();
}
return false;
}, getPoller()));

3
src/Http/HlsPlayer.h
View File

@ -96,7 +96,7 @@ private:
private:
void playDelay();
float delaySecond();
void playNextTs(bool force = false);
void playNextTs();
void teardown_l(const SockException &ex);
void play_l();
void onPacket_l(const char *data, size_t len);
@ -112,7 +112,6 @@ private:
private:
bool _is_m3u8 = false;
bool _first = true;
bool _waiting_response = false;
int64_t _last_sequence = -1;
string _m3u8;
Timer::Ptr _timer;

31
src/Http/HttpTSPlayer.cpp
View File

@ -9,6 +9,7 @@
*/
#include "HttpTSPlayer.h"
namespace mediakit {
HttpTSPlayer::HttpTSPlayer(const EventPoller::Ptr &poller, bool split_ts) {
@ -17,16 +18,14 @@ HttpTSPlayer::HttpTSPlayer(const EventPoller::Ptr &poller, bool split_ts){
setPoller(poller ? poller : EventPollerPool::Instance().getPoller());
}
HttpTSPlayer::~HttpTSPlayer() {}
ssize_t HttpTSPlayer::onResponseHeader(const string &status, const HttpClient::HttpHeader &headers) {
ssize_t HttpTSPlayer::onResponseHeader(const string &status, const HttpClient::HttpHeader &header) {
_status = status;
if (status != "200" && status != "206") {
//http状态码不符合预期
shutdown(SockException(Err_other, StrPrinter << "bad http status code:" + status));
return 0;
}
auto content_type = const_cast< HttpClient::HttpHeader &>(headers)["Content-Type"];
auto content_type = const_cast< HttpClient::HttpHeader &>(header)["Content-Type"];
if (content_type.find("video/mp2t") == 0 || content_type.find("video/mpeg") == 0) {
_is_ts_content = true;
}
@ -35,11 +34,11 @@ ssize_t HttpTSPlayer::onResponseHeader(const string &status, const HttpClient::H
return -1;
}
void HttpTSPlayer::onResponseBody(const char *buf, size_t size, size_t recvedSize, size_t totalSize) {
void HttpTSPlayer::onResponseBody(const char *buf, size_t size, size_t recved_size, size_t total_size) {
if (_status != "200" && _status != "206") {
return;
}
if (recvedSize == size) {
if (recved_size == size) {
//开始接收数据
if (buf[0] == TS_SYNC_BYTE) {
//这是ts头
@ -57,14 +56,16 @@ void HttpTSPlayer::onResponseBody(const char *buf, size_t size, size_t recvedSiz
}
void HttpTSPlayer::onResponseCompleted() {
//接收完毕
shutdown(SockException(Err_success, "play completed"));
emitOnComplete(SockException(Err_success, "play completed"));
}
void HttpTSPlayer::onDisconnect(const SockException &ex) {
if (_on_disconnect) {
_on_disconnect(ex);
_on_disconnect = nullptr;
emitOnComplete(ex);
}
void HttpTSPlayer::emitOnComplete(const SockException &ex) {
if (_on_complete) {
_on_complete(ex);
}
}
@ -74,12 +75,12 @@ void HttpTSPlayer::onPacket(const char *data, size_t len) {
}
}
void HttpTSPlayer::setOnDisconnect(const HttpTSPlayer::onShutdown &cb) {
_on_disconnect = cb;
void HttpTSPlayer::setOnComplete(onComplete cb) {
_on_complete = std::move(cb);
}
void HttpTSPlayer::setOnPacket(const TSSegment::onSegment &cb) {
_on_segment = cb;
void HttpTSPlayer::setOnPacket(TSSegment::onSegment cb) {
_on_segment = std::move(cb);
}
}//namespace mediakit

35
src/Http/HttpTSPlayer.h
View File

@ -14,33 +14,46 @@
#include "Http/HttpDownloader.h"
#include "Player/MediaPlayer.h"
#include "Rtp/TSDecoder.h"
using namespace toolkit;
namespace mediakit {
//http-ts播发器，未实现ts解复用
class HttpTSPlayer : public HttpClientImp {
public:
typedef function<void(const SockException &)> onShutdown;
typedef std::shared_ptr<HttpTSPlayer> Ptr;
using Ptr = std::shared_ptr<HttpTSPlayer>;
using onComplete = std::function<void(const SockException &)>;
HttpTSPlayer(const EventPoller::Ptr &poller = nullptr, bool split_ts = true);
~HttpTSPlayer() override ;
~HttpTSPlayer() override = default;
//设置异常断开回调
void setOnDisconnect(const onShutdown &cb);
//设置接收ts包回调
void setOnPacket(const TSSegment::onSegment &cb);
/**
* 设置下载完毕或异常断开回调
*/
void setOnComplete(onComplete cb);
/**
* 设置接收ts包回调
*/
void setOnPacket(TSSegment::onSegment cb);
protected:
///HttpClient override///
ssize_t onResponseHeader(const string &status,const HttpHeader &headers) override;
void onResponseBody(const char *buf,size_t size,size_t recvedSize,size_t totalSize) override;
ssize_t onResponseHeader(const string &status, const HttpHeader &header) override;
void onResponseBody(const char *buf, size_t size, size_t recved_size, size_t total_size) override;
void onResponseCompleted() override;
void onDisconnect(const SockException &ex) override;
//收到ts包
protected:
/**
* 收到ts数据
*/
virtual void onPacket(const char *data, size_t len);
private:
void emitOnComplete(const SockException &ex);
private:
//是否为mpegts负载
bool _is_ts_content = false;
@ -50,7 +63,7 @@ private:
bool _split_ts;
string _status;
TSSegment _segment;
onShutdown _on_disconnect;
onComplete _on_complete;
TSSegment::onSegment _on_segment;
};