mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
synced 2024-11-23 11:17:09 +08:00
252 lines
8.7 KiB
C++
252 lines
8.7 KiB
C++
/*
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* Copyright (c) 2016 The ZLMediaKit project authors. All Rights Reserved.
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*
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* This file is part of ZLMediaKit(https://github.com/xia-chu/ZLMediaKit).
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*
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* Use of this source code is governed by MIT license that can be found in the
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* LICENSE file in the root of the source tree. All contributing project authors
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* may be found in the AUTHORS file in the root of the source tree.
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*/
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#include "Decoder.h"
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#include "PSDecoder.h"
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#include "TSDecoder.h"
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#include "Extension/H264.h"
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#include "Extension/H265.h"
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#include "Extension/AAC.h"
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#include "Extension/G711.h"
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#include "Extension/Opus.h"
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#if defined(ENABLE_RTPPROXY) || defined(ENABLE_HLS)
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#include "mpeg-ts-proto.h"
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#endif
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namespace mediakit {
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static Decoder::Ptr createDecoder_l(DecoderImp::Type type) {
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switch (type){
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case DecoderImp::decoder_ps:
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#ifdef ENABLE_RTPPROXY
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return std::make_shared<PSDecoder>();
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#else
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WarnL << "创建ps解复用器失败，请打开ENABLE_RTPPROXY然后重新编译";
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return nullptr;
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#endif//ENABLE_RTPPROXY
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case DecoderImp::decoder_ts:
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#ifdef ENABLE_HLS
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return std::make_shared<TSDecoder>();
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#else
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WarnL << "创建mpegts解复用器失败，请打开ENABLE_HLS然后重新编译";
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return nullptr;
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#endif//ENABLE_HLS
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default: return nullptr;
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}
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}
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/////////////////////////////////////////////////////////////
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DecoderImp::Ptr DecoderImp::createDecoder(Type type, MediaSinkInterface *sink){
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auto decoder = createDecoder_l(type);
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if(!decoder){
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return nullptr;
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}
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return DecoderImp::Ptr(new DecoderImp(decoder, sink));
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}
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ssize_t DecoderImp::input(const uint8_t *data, size_t bytes){
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return _decoder->input(data, bytes);
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}
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DecoderImp::DecoderImp(const Decoder::Ptr &decoder, MediaSinkInterface *sink){
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_decoder = decoder;
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_sink = sink;
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_decoder->setOnDecode([this](int stream, int codecid, int flags, int64_t pts, int64_t dts, const void *data, size_t bytes) {
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onDecode(stream, codecid, flags, pts, dts, data, bytes);
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});
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_decoder->setOnStream([this](int stream, int codecid, const void *extra, size_t bytes, int finish) {
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onStream(stream, codecid, extra, bytes, finish);
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});
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}
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#if defined(ENABLE_RTPPROXY) || defined(ENABLE_HLS)
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#define SWITCH_CASE(codec_id) case codec_id : return #codec_id
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static const char *getCodecName(int codec_id) {
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switch (codec_id) {
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SWITCH_CASE(PSI_STREAM_MPEG1);
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SWITCH_CASE(PSI_STREAM_MPEG2);
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SWITCH_CASE(PSI_STREAM_AUDIO_MPEG1);
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SWITCH_CASE(PSI_STREAM_MP3);
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SWITCH_CASE(PSI_STREAM_AAC);
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SWITCH_CASE(PSI_STREAM_MPEG4);
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SWITCH_CASE(PSI_STREAM_MPEG4_AAC_LATM);
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SWITCH_CASE(PSI_STREAM_H264);
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SWITCH_CASE(PSI_STREAM_MPEG4_AAC);
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SWITCH_CASE(PSI_STREAM_H265);
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SWITCH_CASE(PSI_STREAM_AUDIO_AC3);
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SWITCH_CASE(PSI_STREAM_AUDIO_EAC3);
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SWITCH_CASE(PSI_STREAM_AUDIO_DTS);
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SWITCH_CASE(PSI_STREAM_VIDEO_DIRAC);
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SWITCH_CASE(PSI_STREAM_VIDEO_VC1);
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SWITCH_CASE(PSI_STREAM_VIDEO_SVAC);
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SWITCH_CASE(PSI_STREAM_AUDIO_SVAC);
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SWITCH_CASE(PSI_STREAM_AUDIO_G711A);
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SWITCH_CASE(PSI_STREAM_AUDIO_G711U);
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SWITCH_CASE(PSI_STREAM_AUDIO_G722);
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SWITCH_CASE(PSI_STREAM_AUDIO_G723);
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SWITCH_CASE(PSI_STREAM_AUDIO_G729);
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SWITCH_CASE(PSI_STREAM_AUDIO_OPUS);
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default : return "unknown codec";
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}
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}
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void FrameMerger::inputFrame(const Frame::Ptr &frame,const function<void(uint32_t dts,uint32_t pts,const Buffer::Ptr &buffer)> &cb){
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bool flush = false;
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switch (frame->getCodecId()) {
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case CodecH264:
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case CodecH265:{
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//如果是新的一帧，前面的缓存需要输出
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flush = frame->prefixSize();
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break;
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}
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default: break;
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}
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if (!_frameCached.empty() && (flush || _frameCached.back()->dts() != frame->dts())) {
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Frame::Ptr back = _frameCached.back();
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Buffer::Ptr merged_frame = back;
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if(_frameCached.size() != 1){
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BufferLikeString merged;
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merged.reserve(back->size() + 1024);
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_frameCached.for_each([&](const Frame::Ptr &frame){
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merged.append(frame->data(),frame->size());
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});
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merged_frame = std::make_shared<BufferOffset<BufferLikeString> >(std::move(merged));
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}
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cb(back->dts(),back->pts(),merged_frame);
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_frameCached.clear();
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}
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_frameCached.emplace_back(Frame::getCacheAbleFrame(frame));
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}
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void DecoderImp::onStream(int stream, int codecid, const void *extra, size_t bytes, int finish){
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switch (codecid) {
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case PSI_STREAM_H264: {
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InfoL << "got video track: H264";
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auto track = std::make_shared<H264Track>();
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onTrack(track);
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break;
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}
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case PSI_STREAM_H265: {
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InfoL << "got video track: H265";
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auto track = std::make_shared<H265Track>();
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onTrack(track);
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break;
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}
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case PSI_STREAM_AAC: {
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InfoL<< "got audio track: AAC";
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auto track = std::make_shared<AACTrack>();
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onTrack(track);
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break;
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}
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case PSI_STREAM_AUDIO_G711A:
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case PSI_STREAM_AUDIO_G711U: {
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auto codec = codecid == PSI_STREAM_AUDIO_G711A ? CodecG711A : CodecG711U;
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InfoL << "got audio track: G711";
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//G711传统只支持 8000/1/16的规格，FFmpeg貌似做了扩展，但是这里不管它了
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auto track = std::make_shared<G711Track>(codec, 8000, 1, 16);
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onTrack(track);
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break;
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}
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case PSI_STREAM_AUDIO_OPUS: {
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InfoL << "got audio track: opus";
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auto track = std::make_shared<OpusTrack>();
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onTrack(track);
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break;
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}
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default:
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if(codecid != 0){
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WarnL<< "unsupported codec type:" << getCodecName(codecid) << " " << (int)codecid;
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}
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break;
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}
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if (finish) {
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_sink->addTrackCompleted();
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InfoL << "add track finished";
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}
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}
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void DecoderImp::onDecode(int stream,int codecid,int flags,int64_t pts,int64_t dts,const void *data,size_t bytes) {
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pts /= 90;
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dts /= 90;
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switch (codecid) {
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case PSI_STREAM_H264: {
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auto frame = std::make_shared<H264FrameNoCacheAble>((char *) data, bytes, (uint32_t)dts, (uint32_t)pts, prefixSize((char *) data, bytes));
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_merger.inputFrame(frame,[this](uint32_t dts, uint32_t pts, const Buffer::Ptr &buffer) {
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onFrame(std::make_shared<FrameWrapper<H264FrameNoCacheAble> >(buffer, dts, pts, prefixSize(buffer->data(), buffer->size()), 0));
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});
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break;
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}
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case PSI_STREAM_H265: {
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auto frame = std::make_shared<H265FrameNoCacheAble>((char *) data, bytes, (uint32_t)dts, (uint32_t)pts, prefixSize((char *) data, bytes));
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_merger.inputFrame(frame,[this](uint32_t dts, uint32_t pts, const Buffer::Ptr &buffer) {
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onFrame(std::make_shared<FrameWrapper<H265FrameNoCacheAble> >(buffer, dts, pts, prefixSize(buffer->data(), buffer->size()), 0));
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});
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break;
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}
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case PSI_STREAM_AAC: {
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uint8_t *ptr = (uint8_t *)data;
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if(!(bytes > 7 && ptr[0] == 0xFF && (ptr[1] & 0xF0) == 0xF0)){
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//这不是aac
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break;
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}
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onFrame(std::make_shared<FrameFromPtr>(CodecAAC, (char *) data, bytes, (uint32_t)dts, 0, ADTS_HEADER_LEN));
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break;
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}
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case PSI_STREAM_AUDIO_G711A:
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case PSI_STREAM_AUDIO_G711U: {
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auto codec = codecid == PSI_STREAM_AUDIO_G711A ? CodecG711A : CodecG711U;
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onFrame(std::make_shared<FrameFromPtr>(codec, (char *) data, bytes, (uint32_t)dts));
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break;
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}
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case PSI_STREAM_AUDIO_OPUS: {
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onFrame(std::make_shared<FrameFromPtr>(CodecOpus, (char *) data, bytes, (uint32_t)dts));
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break;
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}
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default:
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if (codecid != 0) {
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if (_last_unsported_print.elapsedTime() / 1000 > 5) {
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_last_unsported_print.resetTime();
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WarnL << "unsupported codec type:" << getCodecName(codecid) << " " << (int) codecid;
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}
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}
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break;
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}
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}
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#else
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void DecoderImp::onDecode(int stream,int codecid,int flags,int64_t pts,int64_t dts,const void *data,size_t bytes) {}
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void DecoderImp::onStream(int stream,int codecid,const void *extra,size_t bytes,int finish) {}
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#endif
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void DecoderImp::onTrack(const Track::Ptr &track) {
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_sink->addTrack(track);
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}
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void DecoderImp::onFrame(const Frame::Ptr &frame) {
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_sink->inputFrame(frame);
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}
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}//namespace mediakit
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