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feat: VideoStack (#3373)

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KkemChen 2024-03-16 22:56:32 +08:00 committed by GitHub
parent ff43fa5075
commit 437ae778c0
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GPG Key ID: B5690EEEBB952194
6 changed files with 906 additions and 3 deletions
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6
CMakeLists.txt
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@ -532,3 +532,9 @@ endif ()
file(COPY "${CMAKE_CURRENT_SOURCE_DIR}/www" DESTINATION ${EXECUTABLE_OUTPUT_PATH})
file(COPY "${CMAKE_CURRENT_SOURCE_DIR}/conf/config.ini" DESTINATION ${EXECUTABLE_OUTPUT_PATH})
file(COPY "${CMAKE_CURRENT_SOURCE_DIR}/default.pem" DESTINATION ${EXECUTABLE_OUTPUT_PATH})
# 拷贝VideoStack 无视频流时默认填充的背景图片
# Copy the default background image used by VideoStack when there is no video stream
if (ENABLE_FFMPEG AND ENABLE_X264)
file(COPY "${CMAKE_CURRENT_SOURCE_DIR}/conf/novideo.yuv" DESTINATION ${EXECUTABLE_OUTPUT_PATH})
endif ()

1
conf/novideo.yuv Normal file
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File diff suppressed because one or more lines are too long

71
postman/ZLMediaKit.postman_collection.json
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@ -1,11 +1,10 @@
{
"info": {
"_postman_id": "08c77fc3-7670-428c-bde4-80c8cc9f389f",
"_postman_id": "8b3cdc62-3e18-4700-9ddd-dc9f58ebce83",
"name": "ZLMediaKit",
"description": "媒体服务器",
"schema": "https://schema.getpostman.com/json/collection/v2.1.0/collection.json",
"_exporter_id": "29185956",
"_collection_link": "https://lively-station-598157.postman.co/workspace/%E6%B5%81%E5%AA%92%E4%BD%93%E6%9C%8D%E5%8A%A1~1e119172-45b0-4ed6-b1fc-8a15d0e2d5f8/collection/29185956-08c77fc3-7670-428c-bde4-80c8cc9f389f?action=share&source=collection_link&creator=29185956"
"_exporter_id": "26338564"
},
"item": [
{
@ -34,6 +33,72 @@
},
"response": []
},
{
"name": "关闭多屏拼接(stack/stop)",
"request": {
"method": "GET",
"header": [],
"url": {
"raw": "{{ZLMediaKit_URL}}/index/api/getApiList?secret={{ZLMediaKit_secret}}&id=stack_test",
"host": [
"{{ZLMediaKit_URL}}"
],
"path": [
"index",
"api",
"getApiList"
],
"query": [
{
"key": "secret",
"value": "{{ZLMediaKit_secret}}",
"description": "api操作密钥(配置文件配置)"
},
{
"key": "id",
"value": "stack_test"
}
]
}
},
"response": []
},
{
"name": "添加多屏拼接(stack/start)",
"request": {
"method": "POST",
"header": [],
"body": {
"mode": "raw",
"raw": "{\r\n \"gapv\": 0.002,\r\n \"gaph\": 0.001,\r\n \"width\": 1920,\r\n \"url\": [\r\n [\r\n \"rtsp://kkem.me/live/test3\",\r\n \"rtsp://kkem.me/live/cy1\",\r\n \"rtsp://kkem.me/live/cy1\",\r\n \"rtsp://kkem.me/live/cy2\"\r\n ],\r\n [\r\n \"rtsp://kkem.me/live/cy1\",\r\n \"rtsp://kkem.me/live/cy5\",\r\n \"rtsp://kkem.me/live/cy3\",\r\n \"rtsp://kkem.me/live/cy4\"\r\n ],\r\n [\r\n \"rtsp://kkem.me/live/cy5\",\r\n \"rtsp://kkem.me/live/cy6\",\r\n \"rtsp://kkem.me/live/cy7\",\r\n \"rtsp://kkem.me/live/cy8\"\r\n ],\r\n [\r\n \"rtsp://kkem.me/live/cy9\",\r\n \"rtsp://kkem.me/live/cy10\",\r\n \"rtsp://kkem.me/live/cy11\",\r\n \"rtsp://kkem.me/live/cy12\"\r\n ]\r\n ],\r\n \"id\": \"89\",\r\n \"row\": 4,\r\n \"col\": 4,\r\n \"height\": 1080,\r\n \"span\": [\r\n [\r\n [\r\n 0,\r\n 0\r\n ],\r\n [\r\n 1,\r\n 1\r\n ]\r\n ],\r\n [\r\n [\r\n 3,\r\n 0\r\n ],\r\n [\r\n 3,\r\n 1\r\n ]\r\n ],\r\n [\r\n [\r\n 2,\r\n 3\r\n ],\r\n [\r\n 3,\r\n 3\r\n ]\r\n ]\r\n ]\r\n}",
"options": {
"raw": {
"language": "json"
}
}
},
"url": {
"raw": "{{ZLMediaKit_URL}}/index/api/stack/start?secret={{ZLMediaKit_secret}}",
"host": [
"{{ZLMediaKit_URL}}"
],
"path": [
"index",
"api",
"stack",
"start"
],
"query": [
{
"key": "secret",
"value": "{{ZLMediaKit_secret}}",
"description": "api操作密钥(配置文件配置)"
}
]
}
},
"response": []
},
{
"name": "获取网络线程负载(getThreadsLoad)",
"request": {

590
server/VideoStack.cpp Normal file
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@ -0,0 +1,590 @@
#if defined(ENABLE_X264) && defined(ENABLE_FFMPEG)
#include "VideoStack.h"
#include "Codec/Transcode.h"
#include "Common/Device.h"
#include "Util/logger.h"
#include "Util/util.h"
#include "json/value.h"
#include <Thread/WorkThreadPool.h>
#include <fstream>
#include <libavutil/pixfmt.h>
#include <memory>
#include <mutex>
// ITU-R BT.601
// #define RGB_TO_Y(R, G, B) ((( 66 * (R) + 129 * (G) + 25 * (B)+128) >> 8)+16)
// #define RGB_TO_U(R, G, B) (((-38 * (R) - 74 * (G) + 112 * (B)+128) >> 8)+128)
// #define RGB_TO_V(R, G, B) (((112 * (R) - 94 * (G) - 18 * (B)+128) >> 8)+128)
// ITU-R BT.709
#define RGB_TO_Y(R, G, B) (((47 * (R) + 157 * (G) + 16 * (B) + 128) >> 8) + 16)
#define RGB_TO_U(R, G, B) (((-26 * (R)-87 * (G) + 112 * (B) + 128) >> 8) + 128)
#define RGB_TO_V(R, G, B) (((112 * (R)-102 * (G)-10 * (B) + 128) >> 8) + 128)
INSTANCE_IMP(VideoStackManager)
Param::~Param()
{
VideoStackManager::Instance().unrefChannel(
id, width, height, pixfmt);
}
Channel::Channel(const std::string& id, int width, int height, AVPixelFormat pixfmt)
: _id(id)
, _width(width)
, _height(height)
, _pixfmt(pixfmt)
{
_tmp = std::make_shared<mediakit::FFmpegFrame>();
_tmp->get()->width = _width;
_tmp->get()->height = _height;
_tmp->get()->format = _pixfmt;
av_frame_get_buffer(_tmp->get(), 32);
memset(_tmp->get()->data[0], 0, _tmp->get()->linesize[0] * _height);
memset(_tmp->get()->data[1], 0, _tmp->get()->linesize[1] * _height / 2);
memset(_tmp->get()->data[2], 0, _tmp->get()->linesize[2] * _height / 2);
auto frame = VideoStackManager::Instance().getBgImg();
_sws = std::make_shared<mediakit::FFmpegSws>(_pixfmt, _width, _height);
_tmp = _sws->inputFrame(frame);
}
void Channel::addParam(const std::weak_ptr<Param>& p)
{
std::lock_guard<std::recursive_mutex> lock(_mx);
_params.push_back(p);
}
void Channel::onFrame(const mediakit::FFmpegFrame::Ptr& frame)
{
std::weak_ptr<Channel> weakSelf = shared_from_this();
// toolkit::WorkThreadPool::Instance().getFirstPoller()->async([weakSelf, frame]() {
auto self = weakSelf.lock();
if (!self) {
return;
}
self->_tmp = self->_sws->inputFrame(frame);
self->forEachParam([self](const Param::Ptr& p) { self->fillBuffer(p); });
// });
}
void Channel::forEachParam(const std::function<void(const Param::Ptr&)>& func)
{
for (auto& wp : _params) {
if (auto sp = wp.lock()) {
func(sp);
}
}
}
void Channel::fillBuffer(const Param::Ptr& p)
{
if (auto buf = p->weak_buf.lock()) {
copyData(buf, p);
}
}
void Channel::copyData(const mediakit::FFmpegFrame::Ptr& buf, const Param::Ptr& p)
{
switch (p->pixfmt) {
case AV_PIX_FMT_YUV420P: {
for (int i = 0; i < p->height; i++) {
memcpy(buf->get()->data[0] + buf->get()->linesize[0] * (i + p->posY) + p->posX,
_tmp->get()->data[0] + _tmp->get()->linesize[0] * i,
_tmp->get()->width);
}
//确保height为奇数时，也能正确的复制到最后一行uv数据
for (int i = 0; i < (p->height + 1) / 2; i++) {
// U平面
memcpy(buf->get()->data[1] + buf->get()->linesize[1] * (i + p->posY / 2) + p->posX / 2,
_tmp->get()->data[1] + _tmp->get()->linesize[1] * i,
_tmp->get()->width / 2);
// V平面
memcpy(buf->get()->data[2] + buf->get()->linesize[2] * (i + p->posY / 2) + p->posX / 2,
_tmp->get()->data[2] + _tmp->get()->linesize[2] * i,
_tmp->get()->width / 2);
}
break;
}
case AV_PIX_FMT_NV12: {
//TODO: 待实现
break;
}
default:
WarnL << "No support pixformat: " << av_get_pix_fmt_name(p->pixfmt);
break;
}
}
void StackPlayer::addChannel(const std::weak_ptr<Channel>& chn)
{
std::lock_guard<std::recursive_mutex> lock(_mx);
_channels.push_back(chn);
}
void StackPlayer::play()
{
auto url = _url;
//创建拉流 解码对象
_player = std::make_shared<mediakit::MediaPlayer>();
std::weak_ptr<mediakit::MediaPlayer> weakPlayer = _player;
std::weak_ptr<StackPlayer> weakSelf = shared_from_this();
(*_player)[mediakit::Client::kWaitTrackReady] = false;
(*_player)[mediakit::Client::kRtpType] = mediakit::Rtsp::RTP_TCP;
_player->setOnPlayResult([weakPlayer, weakSelf, url](const toolkit::SockException& ex) mutable {
TraceL << "StackPlayer: " << url << " OnPlayResult: " << ex.what();
auto strongPlayer = weakPlayer.lock();
if (!strongPlayer) {
return;
}
auto self = weakSelf.lock();
if (!self) {
return;
}
if (!ex) {
// 取消定时器
self->_timer.reset();
self->_failedCount = 0;
} else {
self->onDisconnect();
self->rePlay(url);
}
auto videoTrack = std::dynamic_pointer_cast<mediakit::VideoTrack>(strongPlayer->getTrack(mediakit::TrackVideo, false));
//auto audioTrack = std::dynamic_pointer_cast<mediakit::AudioTrack>(strongPlayer->getTrack(mediakit::TrackAudio, false));
if (videoTrack) {
//TODO:添加使用显卡还是cpu解码的判断逻辑
//auto decoder = std::make_shared<FFmpegDecoder>(videoTrack, 1, std::vector<std::string>{ "hevc_cuvid", "h264_cuvid"});
auto decoder = std::make_shared<mediakit::FFmpegDecoder>(videoTrack, 0, std::vector<std::string> { "h264", "hevc" });
decoder->setOnDecode([weakSelf](const mediakit::FFmpegFrame::Ptr& frame) mutable {
auto self = weakSelf.lock();
if (!self) {
return;
}
self->onFrame(frame);
});
videoTrack->addDelegate((std::function<bool(const mediakit::Frame::Ptr&)>)[decoder](const mediakit::Frame::Ptr& frame) {
return decoder->inputFrame(frame, false, true);
});
}
});
_player->setOnShutdown([weakPlayer, url, weakSelf](const toolkit::SockException& ex) {
TraceL << "StackPlayer: " << url << " OnShutdown: " << ex.what();
auto strongPlayer = weakPlayer.lock();
if (!strongPlayer) {
return;
}
auto self = weakSelf.lock();
if (!self) {
return;
}
self->onDisconnect();
self->rePlay(url);
});
_player->play(url);
}
void StackPlayer::onFrame(const mediakit::FFmpegFrame::Ptr& frame)
{
std::lock_guard<std::recursive_mutex> lock(_mx);
for (auto& weak_chn : _channels) {
if (auto chn = weak_chn.lock()) {
chn->onFrame(frame);
}
}
}
void StackPlayer::onDisconnect()
{
std::lock_guard<std::recursive_mutex> lock(_mx);
for (auto& weak_chn : _channels) {
if (auto chn = weak_chn.lock()) {
auto frame = VideoStackManager::Instance().getBgImg();
chn->onFrame(frame);
}
}
}
void StackPlayer::rePlay(const std::string& url)
{
_failedCount++;
auto delay = MAX(2 * 1000, MIN(_failedCount * 3 * 1000, 60 * 1000)); //步进延迟 重试间隔
std::weak_ptr<StackPlayer> weakSelf = shared_from_this();
_timer = std::make_shared<toolkit::Timer>(
delay / 1000.0f, [weakSelf, url]() {
auto self = weakSelf.lock();
if (!self) {
}
WarnL << "replay [" << self->_failedCount << "]:" << url;
self->_player->play(url);
return false;
},
nullptr);
}
VideoStack::VideoStack(const std::string& id, int width, int height, AVPixelFormat pixfmt, float fps, int bitRate)
: _id(id)
, _width(width)
, _height(height)
, _pixfmt(pixfmt)
, _fps(fps)
, _bitRate(bitRate)
{
_buffer = std::make_shared<mediakit::FFmpegFrame>();
_buffer->get()->width = _width;
_buffer->get()->height = _height;
_buffer->get()->format = _pixfmt;
av_frame_get_buffer(_buffer->get(), 32);
_dev = std::make_shared<mediakit::DevChannel>(mediakit::MediaTuple { DEFAULT_VHOST, "live", _id });
mediakit::VideoInfo info;
info.codecId = mediakit::CodecH264;
info.iWidth = _width;
info.iHeight = _height;
info.iFrameRate = _fps;
info.iBitRate = _bitRate;
_dev->initVideo(info);
//dev->initAudio(); //TODO:音频
_dev->addTrackCompleted();
_isExit = false;
}
VideoStack::~VideoStack()
{
_isExit = true;
if (_thread.joinable()) {
_thread.join();
}
}
void VideoStack::setParam(const Params& params)
{
if (_params) {
for (auto& p : (*_params)) {
if (!p)
continue;
p->weak_buf.reset();
}
}
initBgColor();
for (auto& p : (*params)) {
if (!p)
continue;
p->weak_buf = _buffer;
if (auto chn = p->weak_chn.lock()) {
chn->addParam(p);
chn->fillBuffer(p);
}
}
_params = params;
}
void VideoStack::start()
{
_thread = std::thread([&]() {
uint64_t pts = 0;
int frameInterval = 1000 / _fps;
auto lastEncTP = std::chrono::steady_clock::now();
while (!_isExit) {
if (std::chrono::steady_clock::now() - lastEncTP > std::chrono::milliseconds(frameInterval)) {
lastEncTP = std::chrono::steady_clock::now();
_dev->inputYUV((char**)_buffer->get()->data, _buffer->get()->linesize, pts);
pts += frameInterval;
}
}
});
}
void VideoStack::initBgColor()
{
//填充底色
auto R = 20;
auto G = 20;
auto B = 20;
double Y = RGB_TO_Y(R, G, B);
double U = RGB_TO_U(R, G, B);
double V = RGB_TO_V(R, G, B);
memset(_buffer->get()->data[0], Y, _buffer->get()->linesize[0] * _height);
memset(_buffer->get()->data[1], U, _buffer->get()->linesize[1] * _height / 2);
memset(_buffer->get()->data[2], V, _buffer->get()->linesize[2] * _height / 2);
}
Channel::Ptr VideoStackManager::getChannel(const std::string& id,
int width,
int height,
AVPixelFormat pixfmt)
{
std::lock_guard<std::recursive_mutex> lock(_mx);
auto key = id + std::to_string(width) + std::to_string(height) + std::to_string(pixfmt);
auto it = _channelMap.find(key);
if (it != _channelMap.end()) {
return it->second->acquire();
}
return createChannel(id, width, height, pixfmt);
}
void VideoStackManager::unrefChannel(const std::string& id,
int width,
int height,
AVPixelFormat pixfmt)
{
std::lock_guard<std::recursive_mutex> lock(_mx);
auto key = id + std::to_string(width) + std::to_string(height) + std::to_string(pixfmt);
auto chn_it = _channelMap.find(key);
if (chn_it != _channelMap.end() && chn_it->second->dispose()) {
_channelMap.erase(chn_it);
auto player_it = _playerMap.find(id);
if (player_it != _playerMap.end() && player_it->second->dispose()) {
_playerMap.erase(player_it);
}
}
}
int VideoStackManager::startVideoStack(const Json::Value& json)
{
std::string id;
int width, height;
auto params = parseParams(json, id, width, height);
if (!params) {
ErrorL << "Videostack parse params failed!";
return -1;
}
auto stack = std::make_shared<VideoStack>(id, width, height);
for (auto& p : (*params)) {
if (!p)
continue;
p->weak_chn = getChannel(p->id, p->width, p->height, p->pixfmt);
}
stack->setParam(params);
stack->start();
std::lock_guard<std::recursive_mutex> lock(_mx);
_stackMap[id] = stack;
return 0;
}
int VideoStackManager::resetVideoStack(const Json::Value& json)
{
std::string id;
int width, height;
auto params = parseParams(json, id, width, height);
if (!params) {
return -1;
}
VideoStack::Ptr stack;
{
std::lock_guard<std::recursive_mutex> lock(_mx);
auto it = _stackMap.find(id);
if (it == _stackMap.end()) {
return -2;
}
stack = it->second;
}
for (auto& p : (*params)) {
if (!p)
continue;
p->weak_chn = getChannel(p->id, p->width, p->height, p->pixfmt);
}
stack->setParam(params);
return 0;
}
int VideoStackManager::stopVideoStack(const std::string& id)
{
std::lock_guard<std::recursive_mutex> lock(_mx);
auto it = _stackMap.find(id);
if (it != _stackMap.end()) {
_stackMap.erase(it);
return 0;
}
return -1;
}
mediakit::FFmpegFrame::Ptr VideoStackManager::getBgImg()
{
return _bgImg;
}
Params VideoStackManager::parseParams(const Json::Value& json,
std::string& id,
int& width,
int& height)
{
try {
id = json["id"].asString();
width = json["width"].asInt();
height = json["height"].asInt();
int rows = json["row"].asInt(); //堆叠行数
int cols = json["col"].asInt(); //堆叠列数
float gapv = json["gapv"].asFloat(); //垂直间距
float gaph = json["gaph"].asFloat(); //水平间距
//单个间距
int gaphPix = static_cast<int>(std::round(width * gaph));
int gapvPix = static_cast<int>(std::round(height * gapv));
// 根据间距计算格子宽高
int gridWidth = cols > 1 ? (width - gaphPix * (cols - 1)) / cols : width;
int gridHeight = rows > 1 ? (height - gapvPix * (rows - 1)) / rows : height;
auto params = std::make_shared<std::vector<Param::Ptr>>(rows * cols);
for (int row = 0; row < rows; row++) {
for (int col = 0; col < cols; col++) {
std::string url = json["url"][row][col].asString();
auto param = std::make_shared<Param>();
param->posX = gridWidth * col + col * gaphPix;
param->posY = gridHeight * row + row * gapvPix;
param->width = gridWidth;
param->height = gridHeight;
param->id = url;
(*params)[row * cols + col] = param;
}
}
//判断是否需要合并格子 （焦点屏）
if (!json["span"].empty() && json.isMember("span")) {
for (const auto& subArray : json["span"]) {
if (!subArray.isArray() || subArray.size() != 2) {
throw Json::LogicError("Incorrect 'span' sub-array format in JSON");
}
std::array<int, 4> mergePos;
int index = 0;
for (const auto& innerArray : subArray) {
if (!innerArray.isArray() || innerArray.size() != 2) {
throw Json::LogicError("Incorrect 'span' inner-array format in JSON");
}
for (const auto& number : innerArray) {
if (index < mergePos.size()) {
mergePos[index++] = number.asInt();
}
}
}
for (int i = mergePos[0]; i <= mergePos[2]; i++) {
for (int j = mergePos[1]; j <= mergePos[3]; j++) {
if (i == mergePos[0] && j == mergePos[1]) {
(*params)[i * cols + j]->width = (mergePos[3] - mergePos[1] + 1) * gridWidth + (mergePos[3] - mergePos[1]) * gapvPix;
(*params)[i * cols + j]->height = (mergePos[2] - mergePos[0] + 1) * gridHeight + (mergePos[2] - mergePos[0]) * gaphPix;
} else {
(*params)[i * cols + j] = nullptr;
}
}
}
}
}
return params;
} catch (const std::exception& e) {
ErrorL << "Videostack parse params failed! " << e.what();
return nullptr;
}
}
bool VideoStackManager::loadBgImg(const std::string& path)
{
_bgImg = std::make_shared<mediakit::FFmpegFrame>();
_bgImg->get()->width = 1280;
_bgImg->get()->height = 720;
_bgImg->get()->format = AV_PIX_FMT_YUV420P;
av_frame_get_buffer(_bgImg->get(), 32);
std::ifstream file(path, std::ios::binary);
if (!file.is_open()) {
return false;
}
file.read((char*)_bgImg->get()->data[0], _bgImg->get()->linesize[0] * _bgImg->get()->height); // Y
file.read((char*)_bgImg->get()->data[1], _bgImg->get()->linesize[1] * _bgImg->get()->height / 2); // U
file.read((char*)_bgImg->get()->data[2], _bgImg->get()->linesize[2] * _bgImg->get()->height / 2); // V
return true;
}
Channel::Ptr VideoStackManager::createChannel(const std::string& id,
int width,
int height,
AVPixelFormat pixfmt)
{
std::lock_guard<std::recursive_mutex> lock(_mx);
StackPlayer::Ptr player;
auto it = _playerMap.find(id);
if (it != _playerMap.end()) {
player = it->second->acquire();
} else {
player = createPlayer(id);
}
auto refChn = std::make_shared<RefWrapper<Channel::Ptr>>(std::make_shared<Channel>(id, width, height, pixfmt));
auto chn = refChn->acquire();
player->addChannel(chn);
_channelMap[id + std::to_string(width) + std::to_string(height) + std::to_string(pixfmt)] = refChn;
return chn;
}
StackPlayer::Ptr VideoStackManager::createPlayer(const std::string& id)
{
std::lock_guard<std::recursive_mutex> lock(_mx);
auto refPlayer = std::make_shared<RefWrapper<StackPlayer::Ptr>>(std::make_shared<StackPlayer>(id));
_playerMap[id] = refPlayer;
auto player = refPlayer->acquire();
if (!id.empty()) {
player->play();
}
return player;
}
#endif

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server/VideoStack.h Normal file
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#pragma once
#if defined(ENABLE_X264) && defined(ENABLE_FFMPEG)
#include "Codec/Transcode.h"
#include "Common/Device.h"
#include "Player/MediaPlayer.h"
#include "json/json.h"
#include <mutex>
template <typename T>
class RefWrapper {
public:
using Ptr = std::shared_ptr<RefWrapper<T>>;
template <typename... Args>
explicit RefWrapper(Args&&... args)
: _rc(0)
, _entity(std::forward<Args>(args)...)
{
}
T acquire()
{
++_rc;
return _entity;
}
bool dispose() { return --_rc <= 0; }
private:
T _entity;
std::atomic<int> _rc;
};
class Channel;
struct Param {
using Ptr = std::shared_ptr<Param>;
int posX = 0;
int posY = 0;
int width = 0;
int height = 0;
AVPixelFormat pixfmt = AV_PIX_FMT_YUV420P;
std::string id {};
// runtime
std::weak_ptr<Channel> weak_chn;
std::weak_ptr<mediakit::FFmpegFrame> weak_buf;
~Param();
};
using Params = std::shared_ptr<std::vector<Param::Ptr>>;
class Channel : public std::enable_shared_from_this<Channel> {
public:
using Ptr = std::shared_ptr<Channel>;
Channel(const std::string& id, int width, int height, AVPixelFormat pixfmt);
void addParam(const std::weak_ptr<Param>& p);
void onFrame(const mediakit::FFmpegFrame::Ptr& frame);
void fillBuffer(const Param::Ptr& p);
protected:
void forEachParam(const std::function<void(const Param::Ptr&)>& func);
void copyData(const mediakit::FFmpegFrame::Ptr& buf, const Param::Ptr& p);
private:
std::string _id;
int _width;
int _height;
AVPixelFormat _pixfmt;
mediakit::FFmpegFrame::Ptr _tmp;
std::recursive_mutex _mx;
std::vector<std::weak_ptr<Param>> _params;
mediakit::FFmpegSws::Ptr _sws;
};
class StackPlayer : public std::enable_shared_from_this<StackPlayer> {
public:
using Ptr = std::shared_ptr<StackPlayer>;
StackPlayer(const std::string& url)
: _url(url)
{
}
void addChannel(const std::weak_ptr<Channel>& chn);
void play();
void onFrame(const mediakit::FFmpegFrame::Ptr& frame);
void onDisconnect();
protected:
void rePlay(const std::string& url);
private:
std::string _url;
mediakit::MediaPlayer::Ptr _player;
//用于断线重连
toolkit::Timer::Ptr _timer;
int _failedCount = 0;
std::recursive_mutex _mx;
std::vector<std::weak_ptr<Channel>> _channels;
};
class VideoStack {
public:
using Ptr = std::shared_ptr<VideoStack>;
VideoStack(const std::string& url,
int width = 1920,
int height = 1080,
AVPixelFormat pixfmt = AV_PIX_FMT_YUV420P,
float fps = 25.0,
int bitRate = 2 * 1024 * 1024);
~VideoStack();
void setParam(const Params& params);
void start();
protected:
void initBgColor();
public:
Params _params;
mediakit::FFmpegFrame::Ptr _buffer;
private:
std::string _id;
int _width;
int _height;
AVPixelFormat _pixfmt;
float _fps;
int _bitRate;
mediakit::DevChannel::Ptr _dev;
bool _isExit;
std::thread _thread;
};
class VideoStackManager {
public:
static VideoStackManager& Instance();
Channel::Ptr getChannel(const std::string& id,
int width,
int height,
AVPixelFormat pixfmt);
void unrefChannel(const std::string& id,
int width,
int height,
AVPixelFormat pixfmt);
int startVideoStack(const Json::Value& json);
int resetVideoStack(const Json::Value& json);
int stopVideoStack(const std::string& id);
bool loadBgImg(const std::string& path);
mediakit::FFmpegFrame::Ptr getBgImg();
protected:
Params parseParams(const Json::Value& json,
std::string& id,
int& width,
int& height);
protected:
Channel::Ptr createChannel(const std::string& id,
int width,
int height,
AVPixelFormat pixfmt);
StackPlayer::Ptr createPlayer(const std::string& id);
private:
mediakit::FFmpegFrame::Ptr _bgImg;
private:
std::recursive_mutex _mx;
std::unordered_map<std::string, VideoStack::Ptr> _stackMap;
std::unordered_map<std::string, RefWrapper<Channel::Ptr>::Ptr> _channelMap;
std::unordered_map<std::string, RefWrapper<StackPlayer::Ptr>::Ptr> _playerMap;
};
#endif

34
server/WebApi.cpp
View File

@ -62,6 +62,10 @@
#include "version.h"
#endif
#if defined(ENABLE_X264) && defined (ENABLE_FFMPEG)
#include "VideoStack.h"
#endif
using namespace std;
using namespace Json;
using namespace toolkit;
@ -1925,6 +1929,36 @@ void installWebApi() {
invoker(401, StrCaseMap {}, "None http access event listener");
}
});
#if defined(ENABLE_X264) && defined(ENABLE_FFMPEG)
VideoStackManager::Instance().loadBgImg("novideo.yuv");
NoticeCenter::Instance().addListener(nullptr, Broadcast::kBroadcastStreamNoneReader, [](BroadcastStreamNoneReaderArgs) {
auto id = sender.getMediaTuple().stream;
VideoStackManager::Instance().stopVideoStack(id);
InfoL << "VideoStack: " << id <<" stop";
});
api_regist("/index/api/stack/start", [](API_ARGS_JSON_ASYNC) {
CHECK_SECRET();
auto ret = VideoStackManager::Instance().startVideoStack(allArgs.getArgs());
if (!ret) {
invoker(200, headerOut, "success");
} else {
invoker(200, headerOut, "failed");
}
});
api_regist("/index/api/stack/stop", [](API_ARGS_MAP_ASYNC) {
CHECK_SECRET();
CHECK_ARGS("id");
auto ret = VideoStackManager::Instance().stopVideoStack(allArgs["id"]);
if (!ret) {
invoker(200, headerOut, "success");
} else {
invoker(200, headerOut, "failed");
}
});
#endif
}
void unInstallWebApi(){