mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
synced 2024-11-29 22:55:52 +08:00
792 lines
24 KiB
C++
792 lines
24 KiB
C++
/*
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* MIT License
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*
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* Copyright (c) 2016 xiongziliang <771730766@qq.com>
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*
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* This file is part of ZLMediaKit(https://github.com/xiongziliang/ZLMediaKit).
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "RtmpProtocol.h"
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#include "Rtsp/Rtsp.h"
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#include "Rtmp/utils.h"
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#include "Util/util.h"
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#include "Util/onceToken.h"
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#include "Thread/ThreadPool.h"
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using namespace toolkit;
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#ifdef ENABLE_OPENSSL
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#include "Util/SSLBox.h"
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#include <openssl/hmac.h>
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#include <openssl/opensslv.h>
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static string openssl_HMACsha256(const void *key,unsigned int key_len,
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const void *data,unsigned int data_len){
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std::shared_ptr<char> out(new char[32],[](char *ptr){delete [] ptr;});
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unsigned int out_len;
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#if defined(OPENSSL_VERSION_NUMBER) && (OPENSSL_VERSION_NUMBER > 0x10100000L)
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//openssl 1.1.0新增api，老版本api作废
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HMAC_CTX *ctx = HMAC_CTX_new();
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HMAC_CTX_reset(ctx);
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HMAC_Init_ex(ctx, key, key_len, EVP_sha256(), NULL);
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HMAC_Update(ctx, (unsigned char*)data, data_len);
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HMAC_Final(ctx, (unsigned char *)out.get(), &out_len);
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HMAC_CTX_reset(ctx);
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HMAC_CTX_free(ctx);
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#else
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HMAC_CTX ctx;
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HMAC_CTX_init(&ctx);
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HMAC_Init_ex(&ctx, key, key_len, EVP_sha256(), NULL);
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HMAC_Update(&ctx, (unsigned char*)data, data_len);
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HMAC_Final(&ctx, (unsigned char *)out.get(), &out_len);
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HMAC_CTX_cleanup(&ctx);
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#endif //defined(OPENSSL_VERSION_NUMBER) && (OPENSSL_VERSION_NUMBER > 0x10100000L)
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return string(out.get(),out_len);
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}
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#endif //ENABLE_OPENSSL
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#define C1_DIGEST_SIZE 32
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#define C1_KEY_SIZE 128
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#define C1_SCHEMA_SIZE 764
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#define C1_HANDSHARK_SIZE (RANDOM_LEN + 8)
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#define C1_FPKEY_SIZE 30
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#define S1_FMS_KEY_SIZE 36
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#define S2_FMS_KEY_SIZE 68
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#define C1_OFFSET_SIZE 4
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namespace mediakit {
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RtmpProtocol::RtmpProtocol() {
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_nextHandle = [this](){
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handle_C0C1();
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};
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}
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RtmpProtocol::~RtmpProtocol() {
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reset();
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}
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void RtmpProtocol::reset() {
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////////////ChunkSize////////////
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_iChunkLenIn = DEFAULT_CHUNK_LEN;
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_iChunkLenOut = DEFAULT_CHUNK_LEN;
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////////////Acknowledgement////////////
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_ui32ByteSent = 0;
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_ui32LastSent = 0;
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_ui32WinSize = 0;
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///////////PeerBandwidth///////////
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_ui32Bandwidth = 2500000;
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_ui8LimitType = 2;
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////////////Chunk////////////
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_mapChunkData.clear();
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_iNowStreamID = 0;
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_iNowChunkID = 0;
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//////////Invoke Request//////////
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_iReqID = 0;
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//////////Rtmp parser//////////
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_strRcvBuf.clear();
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_ui32StreamId = STREAM_CONTROL;
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_nextHandle = [this]() {
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handle_C0C1();
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};
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}
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void RtmpProtocol::sendAcknowledgement(uint32_t ui32Size) {
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std::string control;
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uint32_t stream = htonl(ui32Size);
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control.append((char *) &stream, 4);
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sendRequest(MSG_ACK, control);
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}
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void RtmpProtocol::sendAcknowledgementSize(uint32_t ui32Size) {
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uint32_t windowSize = htonl(ui32Size);
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std::string set_windowSize((char *) &windowSize, 4);
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sendRequest(MSG_WIN_SIZE, set_windowSize);
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}
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void RtmpProtocol::sendPeerBandwidth(uint32_t ui32Size) {
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uint32_t peerBandwidth = htonl(ui32Size);
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std::string set_peerBandwidth((char *) &peerBandwidth, 4);
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set_peerBandwidth.push_back((char) 0x02);
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sendRequest(MSG_SET_PEER_BW, set_peerBandwidth);
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}
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void RtmpProtocol::sendChunkSize(uint32_t ui32Size) {
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uint32_t len = htonl(ui32Size);
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std::string set_chunk((char *) &len, 4);
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sendRequest(MSG_SET_CHUNK, set_chunk);
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_iChunkLenOut = ui32Size;
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}
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void RtmpProtocol::sendPingRequest(uint32_t ui32TimeStamp) {
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sendUserControl(CONTROL_PING_REQUEST, ui32TimeStamp);
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}
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void RtmpProtocol::sendPingResponse(uint32_t ui32TimeStamp) {
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sendUserControl(CONTROL_PING_RESPONSE, ui32TimeStamp);
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}
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void RtmpProtocol::sendSetBufferLength(uint32_t ui32StreamId,
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uint32_t ui32Length) {
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std::string control;
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ui32StreamId = htonl(ui32StreamId);
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control.append((char *) &ui32StreamId, 4);
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ui32Length = htonl(ui32Length);
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control.append((char *) &ui32Length, 4);
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sendUserControl(CONTROL_SETBUFFER, control);
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}
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void RtmpProtocol::sendUserControl(uint16_t ui16EventType,
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uint32_t ui32EventData) {
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std::string control;
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uint16_t type = htons(ui16EventType);
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control.append((char *) &type, 2);
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uint32_t stream = htonl(ui32EventData);
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control.append((char *) &stream, 4);
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sendRequest(MSG_USER_CONTROL, control);
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}
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void RtmpProtocol::sendUserControl(uint16_t ui16EventType,
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const string& strEventData) {
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std::string control;
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uint16_t type = htons(ui16EventType);
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control.append((char *) &type, 2);
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control.append(strEventData);
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sendRequest(MSG_USER_CONTROL, control);
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}
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void RtmpProtocol::sendResponse(int iType, const string& str) {
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if(!_bDataStarted && (iType == MSG_DATA)){
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_bDataStarted = true;
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}
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sendRtmp(iType, _iNowStreamID, str, 0, _bDataStarted ? CHUNK_CLIENT_REQUEST_AFTER : CHUNK_CLIENT_REQUEST_BEFORE);
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}
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void RtmpProtocol::sendInvoke(const string& strCmd, const AMFValue& val) {
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AMFEncoder enc;
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enc << strCmd << ++_iReqID << val;
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sendRequest(MSG_CMD, enc.data());
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}
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void RtmpProtocol::sendRequest(int iCmd, const string& str) {
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sendRtmp(iCmd, _ui32StreamId, str, 0, CHUNK_SERVER_REQUEST);
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}
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class BufferPartial : public Buffer {
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public:
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BufferPartial(const Buffer::Ptr &buffer,uint32_t offset,uint32_t size){
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_buffer = buffer;
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_data = buffer->data() + offset;
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_size = size;
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}
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~BufferPartial(){}
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char *data() const override {
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return _data;
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}
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uint32_t size() const override{
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return _size;
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}
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private:
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Buffer::Ptr _buffer;
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char *_data;
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uint32_t _size;
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};
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void RtmpProtocol::sendRtmp(uint8_t ui8Type, uint32_t ui32StreamId,
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const std::string& strBuf, uint32_t ui32TimeStamp, int iChunkId) {
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sendRtmp(ui8Type,ui32StreamId,std::make_shared<BufferString>(strBuf),ui32TimeStamp,iChunkId);
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}
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void RtmpProtocol::sendRtmp(uint8_t ui8Type, uint32_t ui32StreamId,
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const Buffer::Ptr &buf, uint32_t ui32TimeStamp, int iChunkId){
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if (iChunkId < 2 || iChunkId > 63) {
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auto strErr = StrPrinter << "不支持发送该类型的块流 ID:" << iChunkId << endl;
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throw std::runtime_error(strErr);
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}
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//是否有扩展时间戳
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bool bExtStamp = ui32TimeStamp >= 0xFFFFFF;
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//rtmp头
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BufferRaw::Ptr bufferHeader = obtainBuffer();
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bufferHeader->setCapacity(sizeof(RtmpHeader));
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bufferHeader->setSize(sizeof(RtmpHeader));
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//对rtmp头赋值，如果使用整形赋值，在arm android上可能由于数据对齐导致总线错误的问题
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RtmpHeader *header = (RtmpHeader*) bufferHeader->data();
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header->flags = (iChunkId & 0x3f) | (0 << 6);
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header->typeId = ui8Type;
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set_be24(header->timeStamp, bExtStamp ? 0xFFFFFF : ui32TimeStamp);
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set_be24(header->bodySize, buf->size());
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set_le32(header->streamId, ui32StreamId);
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//发送rtmp头
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onSendRawData(bufferHeader);
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//扩展时间戳字段
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BufferRaw::Ptr bufferExtStamp;
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if (bExtStamp) {
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//生成扩展时间戳
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bufferExtStamp = obtainBuffer();
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bufferExtStamp->setCapacity(4);
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bufferExtStamp->setSize(4);
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set_be32(bufferExtStamp->data(), ui32TimeStamp);
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}
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//生成一个字节的flag，标明是什么chunkId
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BufferRaw::Ptr bufferFlags = obtainBuffer();
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bufferFlags->setCapacity(1);
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bufferFlags->setSize(1);
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bufferFlags->data()[0] = (iChunkId & 0x3f) | (3 << 6);
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size_t offset = 0;
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uint32_t totalSize = sizeof(RtmpHeader);
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while (offset < buf->size()) {
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if (offset) {
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onSendRawData(bufferFlags);
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totalSize += 1;
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}
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if (bExtStamp) {
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//扩展时间戳
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onSendRawData(bufferExtStamp);
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totalSize += 4;
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}
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size_t chunk = min(_iChunkLenOut, buf->size() - offset);
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onSendRawData(std::make_shared<BufferPartial>(buf,offset,chunk));
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totalSize += chunk;
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offset += chunk;
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}
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_ui32ByteSent += totalSize;
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if (_ui32WinSize > 0 && _ui32ByteSent - _ui32LastSent >= _ui32WinSize) {
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_ui32LastSent = _ui32ByteSent;
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sendAcknowledgement(_ui32ByteSent);
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}
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}
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void RtmpProtocol::onParseRtmp(const char *pcRawData, int iSize) {
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_strRcvBuf.append(pcRawData, iSize);
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auto cb = _nextHandle;
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cb();
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}
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////for client////
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void RtmpProtocol::startClientSession(const function<void()> &callBack) {
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//发送 C0C1
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char handshake_head = HANDSHAKE_PLAINTEXT;
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onSendRawData(obtainBuffer(&handshake_head, 1));
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RtmpHandshake c1(0);
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onSendRawData(obtainBuffer((char *) (&c1), sizeof(c1)));
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_nextHandle = [this,callBack]() {
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//等待 S0+S1+S2
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handle_S0S1S2(callBack);
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};
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}
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void RtmpProtocol::handle_S0S1S2(const function<void()> &callBack) {
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if (_strRcvBuf.size() < 1 + 2 * C1_HANDSHARK_SIZE) {
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//数据不够
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return;
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}
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if (_strRcvBuf[0] != HANDSHAKE_PLAINTEXT) {
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throw std::runtime_error("only plaintext[0x03] handshake supported");
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}
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//发送 C2
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const char *pcC2 = _strRcvBuf.data() + 1;
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onSendRawData(obtainBuffer(pcC2, C1_HANDSHARK_SIZE));
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_strRcvBuf.erase(0, 1 + 2 * C1_HANDSHARK_SIZE);
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//握手结束
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_nextHandle = [this]() {
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//握手结束并且开始进入解析命令模式
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handle_rtmp();
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};
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callBack();
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}
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////for server ////
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void RtmpProtocol::handle_C0C1() {
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if (_strRcvBuf.size() < 1 + C1_HANDSHARK_SIZE) {
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//need more data!
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return;
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}
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if (_strRcvBuf[0] != HANDSHAKE_PLAINTEXT) {
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throw std::runtime_error("only plaintext[0x03] handshake supported");
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}
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if(memcmp(_strRcvBuf.data() + 5,"\x00\x00\x00\x00",4) ==0 ){
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//simple handsharke
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handle_C1_simple();
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}else{
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#ifdef ENABLE_OPENSSL
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//complex handsharke
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handle_C1_complex();
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#else
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WarnL << "未打开ENABLE_OPENSSL宏，复杂握手采用简单方式处理！";
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handle_C1_simple();
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#endif//ENABLE_OPENSSL
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}
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_strRcvBuf.erase(0, 1 + C1_HANDSHARK_SIZE);
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}
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void RtmpProtocol::handle_C1_simple(){
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//发送S0
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char handshake_head = HANDSHAKE_PLAINTEXT;
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onSendRawData(obtainBuffer(&handshake_head, 1));
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//发送S1
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RtmpHandshake s1(0);
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onSendRawData(obtainBuffer((char *) &s1, C1_HANDSHARK_SIZE));
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//发送S2
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onSendRawData(obtainBuffer(_strRcvBuf.data() + 1, C1_HANDSHARK_SIZE));
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//等待C2
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_nextHandle = [this]() {
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handle_C2();
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};
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}
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#ifdef ENABLE_OPENSSL
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void RtmpProtocol::handle_C1_complex(){
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//参考自:http://blog.csdn.net/win_lin/article/details/13006803
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//skip c0,time,version
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const char *c1_start = _strRcvBuf.data() + 1;
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const char *schema_start = c1_start + 8;
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char *digest_start;
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try{
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/* c1s1 schema0
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time: 4bytes
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version: 4bytes
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key: 764bytes
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digest: 764bytes
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*/
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auto digest = get_C1_digest((uint8_t *)schema_start + C1_SCHEMA_SIZE,&digest_start);
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string c1_joined(c1_start,C1_HANDSHARK_SIZE);
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c1_joined.erase(digest_start - c1_start , C1_DIGEST_SIZE );
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check_C1_Digest(digest,c1_joined);
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send_complex_S0S1S2(0,digest);
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InfoL << "schema0";
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}catch(std::exception &ex){
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//貌似flash从来都不用schema1
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WarnL << "try rtmp complex schema0 failed:" << ex.what();
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try{
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/* c1s1 schema1
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time: 4bytes
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version: 4bytes
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digest: 764bytes
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key: 764bytes
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*/
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auto digest = get_C1_digest((uint8_t *)schema_start,&digest_start);
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string c1_joined(c1_start,C1_HANDSHARK_SIZE);
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c1_joined.erase(digest_start - c1_start , C1_DIGEST_SIZE );
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check_C1_Digest(digest,c1_joined);
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send_complex_S0S1S2(1,digest);
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InfoL << "schema1";
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}catch(std::exception &ex){
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WarnL << "try rtmp complex schema1 failed:" << ex.what();
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handle_C1_simple();
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}
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}
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}
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#if !defined(u_int8_t)
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#define u_int8_t unsigned char
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#endif // !defined(u_int8_t)
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static u_int8_t FMSKey[] = {
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0x47, 0x65, 0x6e, 0x75, 0x69, 0x6e, 0x65, 0x20,
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0x41, 0x64, 0x6f, 0x62, 0x65, 0x20, 0x46, 0x6c,
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0x61, 0x73, 0x68, 0x20, 0x4d, 0x65, 0x64, 0x69,
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0x61, 0x20, 0x53, 0x65, 0x72, 0x76, 0x65, 0x72,
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0x20, 0x30, 0x30, 0x31, // Genuine Adobe Flash Media Server 001
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0xf0, 0xee, 0xc2, 0x4a, 0x80, 0x68, 0xbe, 0xe8,
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0x2e, 0x00, 0xd0, 0xd1, 0x02, 0x9e, 0x7e, 0x57,
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0x6e, 0xec, 0x5d, 0x2d, 0x29, 0x80, 0x6f, 0xab,
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0x93, 0xb8, 0xe6, 0x36, 0xcf, 0xeb, 0x31, 0xae
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}; // 68
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static u_int8_t FPKey[] = {
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0x47, 0x65, 0x6E, 0x75, 0x69, 0x6E, 0x65, 0x20,
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0x41, 0x64, 0x6F, 0x62, 0x65, 0x20, 0x46, 0x6C,
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0x61, 0x73, 0x68, 0x20, 0x50, 0x6C, 0x61, 0x79,
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0x65, 0x72, 0x20, 0x30, 0x30, 0x31, // Genuine Adobe Flash Player 001
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0xF0, 0xEE, 0xC2, 0x4A, 0x80, 0x68, 0xBE, 0xE8,
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0x2E, 0x00, 0xD0, 0xD1, 0x02, 0x9E, 0x7E, 0x57,
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0x6E, 0xEC, 0x5D, 0x2D, 0x29, 0x80, 0x6F, 0xAB,
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0x93, 0xB8, 0xE6, 0x36, 0xCF, 0xEB, 0x31, 0xAE
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}; // 62
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void RtmpProtocol::check_C1_Digest(const string &digest,const string &data){
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auto sha256 = openssl_HMACsha256(FPKey,C1_FPKEY_SIZE,data.data(),data.size());
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if(sha256 != digest){
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throw std::runtime_error("digest mismatched");
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}else{
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InfoL << "check rtmp complex handshark success!";
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}
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}
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string RtmpProtocol::get_C1_digest(const uint8_t *ptr,char **digestPos){
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/* 764bytes digest结构
|
||
offset: 4bytes
|
||
random-data: (offset)bytes
|
||
digest-data: 32bytes
|
||
random-data: (764-4-offset-32)bytes
|
||
*/
|
||
int offset = 0;
|
||
for(int i=0;i<C1_OFFSET_SIZE;++i){
|
||
offset += ptr[i];
|
||
}
|
||
offset %= (C1_SCHEMA_SIZE - C1_DIGEST_SIZE - C1_OFFSET_SIZE);
|
||
*digestPos = (char *)ptr + C1_OFFSET_SIZE + offset;
|
||
string digest(*digestPos,C1_DIGEST_SIZE);
|
||
//DebugL << "digest offset:" << offset << ",digest:" << hexdump(digest.data(),digest.size());
|
||
return digest;
|
||
}
|
||
string RtmpProtocol::get_C1_key(const uint8_t *ptr){
|
||
/* 764bytes key结构
|
||
random-data: (offset)bytes
|
||
key-data: 128bytes
|
||
random-data: (764-offset-128-4)bytes
|
||
offset: 4bytes
|
||
*/
|
||
int offset = 0;
|
||
for(int i = C1_SCHEMA_SIZE - C1_OFFSET_SIZE;i< C1_SCHEMA_SIZE;++i){
|
||
offset += ptr[i];
|
||
}
|
||
offset %= (C1_SCHEMA_SIZE - C1_KEY_SIZE - C1_OFFSET_SIZE);
|
||
string key((char *)ptr + offset,C1_KEY_SIZE);
|
||
//DebugL << "key offset:" << offset << ",key:" << hexdump(key.data(),key.size());
|
||
return key;
|
||
}
|
||
void RtmpProtocol::send_complex_S0S1S2(int schemeType,const string &digest){
|
||
//S1S2计算参考自:https://github.com/hitYangfei/golang/blob/master/rtmpserver.go
|
||
//发送S0
|
||
char handshake_head = HANDSHAKE_PLAINTEXT;
|
||
onSendRawData(obtainBuffer(&handshake_head, 1));
|
||
//S1
|
||
RtmpHandshake s1(0);
|
||
memcpy(s1.zero,"\x04\x05\x00\x01",4);
|
||
char *digestPos;
|
||
if(schemeType == 0){
|
||
/* c1s1 schema0
|
||
time: 4bytes
|
||
version: 4bytes
|
||
key: 764bytes
|
||
digest: 764bytes
|
||
*/
|
||
get_C1_digest(s1.random + C1_SCHEMA_SIZE,&digestPos);
|
||
}else{
|
||
/* c1s1 schema1
|
||
time: 4bytes
|
||
version: 4bytes
|
||
digest: 764bytes
|
||
key: 764bytes
|
||
*/
|
||
get_C1_digest(s1.random,&digestPos);
|
||
}
|
||
char *s1_start = (char *)&s1;
|
||
string s1_joined(s1_start,sizeof(s1));
|
||
s1_joined.erase(digestPos - s1_start,C1_DIGEST_SIZE);
|
||
string s1_digest = openssl_HMACsha256(FMSKey,S1_FMS_KEY_SIZE,s1_joined.data(),s1_joined.size());
|
||
memcpy(digestPos,s1_digest.data(),s1_digest.size());
|
||
onSendRawData(obtainBuffer((char *) &s1, sizeof(s1)));
|
||
|
||
//S2
|
||
string s2_key = openssl_HMACsha256(FMSKey,S2_FMS_KEY_SIZE,digest.data(),digest.size());
|
||
RtmpHandshake s2(0);
|
||
s2.random_generate((char *)&s2,8);
|
||
string s2_digest = openssl_HMACsha256(s2_key.data(),s2_key.size(),&s2,sizeof(s2) - C1_DIGEST_SIZE);
|
||
memcpy((char *)&s2 + C1_HANDSHARK_SIZE - C1_DIGEST_SIZE,s2_digest.data(),C1_DIGEST_SIZE);
|
||
onSendRawData(obtainBuffer((char *)&s2, sizeof(s2)));
|
||
//等待C2
|
||
_nextHandle = [this]() {
|
||
handle_C2();
|
||
};
|
||
}
|
||
#endif //ENABLE_OPENSSL
|
||
void RtmpProtocol::handle_C2() {
|
||
if (_strRcvBuf.size() < C1_HANDSHARK_SIZE) {
|
||
//need more data!
|
||
return;
|
||
}
|
||
_strRcvBuf.erase(0, C1_HANDSHARK_SIZE);
|
||
//握手结束，进入命令模式
|
||
if (!_strRcvBuf.empty()) {
|
||
handle_rtmp();
|
||
}
|
||
_nextHandle = [this]() {
|
||
handle_rtmp();
|
||
};
|
||
}
|
||
|
||
void RtmpProtocol::handle_rtmp() {
|
||
while (!_strRcvBuf.empty()) {
|
||
uint8_t flags = _strRcvBuf[0];
|
||
int iOffset = 0;
|
||
static const size_t HEADER_LENGTH[] = { 12, 8, 4, 1 };
|
||
size_t iHeaderLen = HEADER_LENGTH[flags >> 6];
|
||
_iNowChunkID = flags & 0x3f;
|
||
if(_iNowChunkID >10){
|
||
int i=0;
|
||
i++;
|
||
}
|
||
switch (_iNowChunkID) {
|
||
case 0: {
|
||
//0 值表示二字节形式，并且 ID 范围 64 - 319
|
||
//(第二个字节 + 64)。
|
||
if (_strRcvBuf.size() < 2) {
|
||
//need more data
|
||
return;
|
||
}
|
||
_iNowChunkID = 64 + (uint8_t) (_strRcvBuf[1]);
|
||
iOffset = 1;
|
||
}
|
||
break;
|
||
case 1: {
|
||
//1 值表示三字节形式，并且 ID 范围为 64 - 65599
|
||
//((第三个字节) * 256 + 第二个字节 + 64)。
|
||
if (_strRcvBuf.size() < 3) {
|
||
//need more data
|
||
return;
|
||
}
|
||
_iNowChunkID = 64 + ((uint8_t) (_strRcvBuf[2]) << 8) + (uint8_t) (_strRcvBuf[1]);
|
||
iOffset = 2;
|
||
}
|
||
break;
|
||
default:
|
||
//带有 2 值的块流 ID 被保留，用于下层协议控制消息和命令。
|
||
break;
|
||
}
|
||
|
||
if (_strRcvBuf.size() < iHeaderLen + iOffset) {
|
||
//need more data
|
||
return;
|
||
}
|
||
RtmpHeader &header = *((RtmpHeader *) (_strRcvBuf.data() + iOffset));
|
||
auto &chunkData = _mapChunkData[_iNowChunkID];
|
||
chunkData.chunkId = _iNowChunkID;
|
||
switch (iHeaderLen) {
|
||
case 12:
|
||
chunkData.hasAbsStamp = true;
|
||
chunkData.streamId = load_le32(header.streamId);
|
||
case 8:
|
||
chunkData.bodySize = load_be24(header.bodySize);
|
||
chunkData.typeId = header.typeId;
|
||
case 4:
|
||
chunkData.deltaStamp = load_be24(header.timeStamp);
|
||
chunkData.hasExtStamp = chunkData.deltaStamp == 0xFFFFFF;
|
||
}
|
||
|
||
if (chunkData.hasExtStamp) {
|
||
if (_strRcvBuf.size() < iHeaderLen + iOffset + 4) {
|
||
//need more data
|
||
return;
|
||
}
|
||
chunkData.deltaStamp = load_be32(_strRcvBuf.data() + iOffset + iHeaderLen);
|
||
iOffset += 4;
|
||
}
|
||
|
||
if (chunkData.bodySize < chunkData.strBuf.size()) {
|
||
throw std::runtime_error("非法的bodySize");
|
||
}
|
||
|
||
auto iMore = min(_iChunkLenIn, chunkData.bodySize - chunkData.strBuf.size());
|
||
if (_strRcvBuf.size() < iHeaderLen + iOffset + iMore) {
|
||
//need more data
|
||
return;
|
||
}
|
||
|
||
chunkData.strBuf.append(_strRcvBuf, iHeaderLen + iOffset, iMore);
|
||
_strRcvBuf.erase(0, iHeaderLen + iOffset + iMore);
|
||
|
||
if (chunkData.strBuf.size() == chunkData.bodySize) {
|
||
//frame is ready
|
||
_iNowStreamID = chunkData.streamId;
|
||
chunkData.timeStamp = chunkData.deltaStamp + (chunkData.hasAbsStamp ? 0 : chunkData.timeStamp);
|
||
|
||
if(chunkData.bodySize){
|
||
handle_rtmpChunk(chunkData);
|
||
}
|
||
chunkData.strBuf.clear();
|
||
chunkData.hasAbsStamp = false;
|
||
chunkData.hasExtStamp = false;
|
||
chunkData.deltaStamp = 0;
|
||
}
|
||
}
|
||
}
|
||
|
||
void RtmpProtocol::handle_rtmpChunk(RtmpPacket& chunkData) {
|
||
switch (chunkData.typeId) {
|
||
case MSG_ACK: {
|
||
if (chunkData.strBuf.size() < 4) {
|
||
throw std::runtime_error("MSG_ACK: Not enough data");
|
||
}
|
||
//auto bytePeerRecv = load_be32(&chunkData.strBuf[0]);
|
||
//TraceL << "MSG_ACK:" << bytePeerRecv;
|
||
}
|
||
break;
|
||
case MSG_SET_CHUNK: {
|
||
if (chunkData.strBuf.size() < 4) {
|
||
throw std::runtime_error("MSG_SET_CHUNK :Not enough data");
|
||
}
|
||
_iChunkLenIn = load_be32(&chunkData.strBuf[0]);
|
||
TraceL << "MSG_SET_CHUNK:" << _iChunkLenIn;
|
||
}
|
||
break;
|
||
case MSG_USER_CONTROL: {
|
||
//user control message
|
||
if (chunkData.strBuf.size() < 2) {
|
||
throw std::runtime_error("MSG_USER_CONTROL: Not enough data.");
|
||
}
|
||
uint16_t event_type = load_be16(&chunkData.strBuf[0]);
|
||
chunkData.strBuf.erase(0, 2);
|
||
switch (event_type) {
|
||
case CONTROL_PING_REQUEST: {
|
||
if (chunkData.strBuf.size() < 4) {
|
||
throw std::runtime_error("CONTROL_PING_REQUEST: Not enough data.");
|
||
}
|
||
uint32_t timeStamp = load_be32(&chunkData.strBuf[0]);
|
||
//TraceL << "CONTROL_PING_REQUEST:" << timeStamp;
|
||
sendUserControl(CONTROL_PING_RESPONSE, timeStamp);
|
||
}
|
||
break;
|
||
case CONTROL_PING_RESPONSE: {
|
||
if (chunkData.strBuf.size() < 4) {
|
||
throw std::runtime_error("CONTROL_PING_RESPONSE: Not enough data.");
|
||
}
|
||
//uint32_t timeStamp = load_be32(&chunkData.strBuf[0]);
|
||
//TraceL << "CONTROL_PING_RESPONSE:" << timeStamp;
|
||
}
|
||
break;
|
||
case CONTROL_STREAM_BEGIN: {
|
||
//开始播放
|
||
if (chunkData.strBuf.size() < 4) {
|
||
throw std::runtime_error("CONTROL_STREAM_BEGIN: Not enough data.");
|
||
}
|
||
uint32_t stramId = load_be32(&chunkData.strBuf[0]);
|
||
onStreamBegin(stramId);
|
||
TraceL << "CONTROL_STREAM_BEGIN:" << stramId;
|
||
}
|
||
break;
|
||
|
||
case CONTROL_STREAM_EOF: {
|
||
//暂停
|
||
if (chunkData.strBuf.size() < 4) {
|
||
throw std::runtime_error("CONTROL_STREAM_EOF: Not enough data.");
|
||
}
|
||
uint32_t stramId = load_be32(&chunkData.strBuf[0]);
|
||
onStreamEof(stramId);
|
||
TraceL << "CONTROL_STREAM_EOF:" << stramId;
|
||
}
|
||
break;
|
||
case CONTROL_STREAM_DRY: {
|
||
//停止播放
|
||
if (chunkData.strBuf.size() < 4) {
|
||
throw std::runtime_error("CONTROL_STREAM_DRY: Not enough data.");
|
||
}
|
||
uint32_t stramId = load_be32(&chunkData.strBuf[0]);
|
||
onStreamDry(stramId);
|
||
TraceL << "CONTROL_STREAM_DRY:" << stramId;
|
||
}
|
||
break;
|
||
default:
|
||
//WarnL << "unhandled user control:" << event_type;
|
||
break;
|
||
}
|
||
}
|
||
break;
|
||
|
||
case MSG_WIN_SIZE: {
|
||
_ui32WinSize = load_be32(&chunkData.strBuf[0]);
|
||
TraceL << "MSG_WIN_SIZE:" << _ui32WinSize;
|
||
}
|
||
break;
|
||
case MSG_SET_PEER_BW: {
|
||
_ui32Bandwidth = load_be32(&chunkData.strBuf[0]);
|
||
_ui8LimitType = chunkData.strBuf[4];
|
||
TraceL << "MSG_SET_PEER_BW:" << _ui32WinSize;
|
||
}
|
||
break;
|
||
case MSG_AGGREGATE: {
|
||
auto ptr = (uint8_t*)chunkData.strBuf.data();
|
||
auto ptr_tail = ptr + chunkData.strBuf.length() ;
|
||
while(ptr + 8 + 3 < ptr_tail){
|
||
auto type = *ptr;
|
||
ptr += 1;
|
||
auto size = load_be24(ptr);
|
||
ptr += 3;
|
||
auto ts = load_be24(ptr);
|
||
ptr += 3;
|
||
ts |= (*ptr << 24);
|
||
ptr += 1;
|
||
|
||
//参考ffmpeg忽略了3个字节
|
||
/**
|
||
* while (next - pkt->data < pkt->size - RTMP_HEADER) {
|
||
type = bytestream_get_byte(&next);
|
||
size = bytestream_get_be24(&next);
|
||
cts = bytestream_get_be24(&next);
|
||
cts |= bytestream_get_byte(&next) << 24;
|
||
if (!pts)
|
||
pts = cts;
|
||
ts += cts - pts;
|
||
pts = cts;
|
||
if (size + 3 + 4 > pkt->data + pkt->size - next)
|
||
break;
|
||
bytestream_put_byte(&p, type);
|
||
bytestream_put_be24(&p, size);
|
||
bytestream_put_be24(&p, ts);
|
||
bytestream_put_byte(&p, ts >> 24);
|
||
memcpy(p, next, size + 3 + 4);
|
||
p += size + 3;
|
||
bytestream_put_be32(&p, size + RTMP_HEADER);
|
||
next += size + 3 + 4;
|
||
}
|
||
*/
|
||
ptr += 3;
|
||
//参考FFmpeg多拷贝了4个字节
|
||
size += 4;
|
||
if(ptr + size > ptr_tail){
|
||
// ErrorL << ptr + size << " " << ptr_tail << " " << ptr_tail - ptr - size;
|
||
break;
|
||
}
|
||
// DebugL << (int)type << " " << size << " " << ts << " " << chunkData.timeStamp << " " << ptr_tail - ptr;
|
||
RtmpPacket sub_packet ;
|
||
sub_packet.strBuf.resize(size);
|
||
memcpy((char *)sub_packet.strBuf.data(),ptr,size);
|
||
sub_packet.typeId = type;
|
||
sub_packet.bodySize = size;
|
||
sub_packet.timeStamp = ts;
|
||
sub_packet.streamId = chunkData.streamId;
|
||
sub_packet.chunkId = chunkData.chunkId;
|
||
handle_rtmpChunk(sub_packet);
|
||
ptr += size;
|
||
}
|
||
// InfoL << ptr_tail - ptr;
|
||
}
|
||
break;
|
||
default:
|
||
onRtmpChunk(chunkData);
|
||
break;
|
||
}
|
||
}
|
||
|
||
BufferRaw::Ptr RtmpProtocol::obtainBuffer() {
|
||
return std::make_shared<BufferRaw>() ;//_bufferPool.obtain();
|
||
}
|
||
|
||
BufferRaw::Ptr RtmpProtocol::obtainBuffer(const void *data, int len) {
|
||
auto buffer = obtainBuffer();
|
||
buffer->assign((const char *)data,len);
|
||
return buffer;
|
||
}
|
||
|
||
} /* namespace mediakit */
|