mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
synced 2024-11-27 21:58:33 +08:00
105 lines
3.8 KiB
C++
105 lines
3.8 KiB
C++
/*
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* Copyright (c) 2016-present The ZLMediaKit project authors. All Rights Reserved.
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*
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* This file is part of ZLMediaKit(https://github.com/ZLMediaKit/ZLMediaKit).
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*
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* Use of this source code is governed by MIT-like 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 "mk_h264_splitter.h"
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#include "Http/HttpRequestSplitter.h"
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#include "Extension/Factory.h"
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using namespace mediakit;
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class H264Splitter : public HttpRequestSplitter {
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public:
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using onH264 = std::function<void(const char *data, size_t len)>;
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H264Splitter(bool h265 = false) { _h265 = h265; }
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~H264Splitter() override;
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void setOnSplitted(onH264 cb);
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protected:
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ssize_t onRecvHeader(const char *data, size_t len) override;
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const char *onSearchPacketTail(const char *data, size_t len) override;
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private:
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bool _h265 = false;
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bool _have_decode_frame = false;
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onH264 _cb;
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toolkit::BufferLikeString _buffer;
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};
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void H264Splitter::setOnSplitted(H264Splitter::onH264 cb) {
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_cb = std::move(cb);
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}
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H264Splitter::~H264Splitter() {
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if (remainDataSize()) {
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_cb(remainData(), remainDataSize());
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}
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}
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ssize_t H264Splitter::onRecvHeader(const char *data, size_t len) {
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auto frame = Factory::getFrameFromPtr(_h265 ? CodecH265 : CodecH264, (char *)data, len, 0, 0);
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if (_have_decode_frame && (frame->decodeAble() || frame->configFrame())) {
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// 缓存中存在可解码帧，且下一帧是可解码帧或者配置帧，那么flush缓存 [AUTO-TRANSLATED:2c52093b]
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// Flush the cache if there are decodable frames in the cache and the next frame is a decodable frame or a configuration frame.
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_cb(_buffer.data(), _buffer.size());
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_buffer.assign(data, len);
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_have_decode_frame = frame->decodeAble();
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} else {
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// 还需要缓存 [AUTO-TRANSLATED:a4dc19cb]
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// Still need to cache
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_buffer.append(data, len);
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_have_decode_frame = _have_decode_frame || frame->decodeAble();
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}
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return 0;
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}
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const char *H264Splitter::onSearchPacketTail(const char *data, size_t len) {
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for (size_t i = 2; len > 2 && i < len - 2; ++i) {
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// 判断0x00 00 01 [AUTO-TRANSLATED:afa3d4c2]
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// Determine if it is 0x00 00 01
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if (data[i] == 0 && data[i + 1] == 0 && data[i + 2] == 1) {
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if (i > 0 && data[i - 1] == 0) {
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// 找到0x00 00 00 01 [AUTO-TRANSLATED:96a10021]
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// Find 0x00 00 00 01
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return data + i - 1;
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}
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return data + i;
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}
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}
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return nullptr;
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////////
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API_EXPORT mk_h264_splitter API_CALL mk_h264_splitter_create(on_mk_h264_splitter_frame cb, void *user_data, int is_h265) {
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return mk_h264_splitter_create2(cb, user_data, nullptr, is_h265);
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}
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API_EXPORT mk_h264_splitter API_CALL mk_h264_splitter_create2(on_mk_h264_splitter_frame cb, void *user_data, on_user_data_free user_data_free, int is_h265) {
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assert(cb);
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auto ret = new H264Splitter(is_h265);
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std::shared_ptr<void> ptr(user_data, user_data_free ? user_data_free : [](void *) {});
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ret->setOnSplitted([cb, ptr, ret](const char *data, size_t len) {
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cb(ptr.get(), reinterpret_cast<mk_h264_splitter>(ret), data, len);
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});
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return reinterpret_cast<mk_h264_splitter>(ret);
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}
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API_EXPORT void API_CALL mk_h264_splitter_release(mk_h264_splitter ctx){
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assert(ctx);
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auto ptr = reinterpret_cast<H264Splitter *>(ctx);
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delete ptr;
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}
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API_EXPORT void API_CALL mk_h264_splitter_input_data(mk_h264_splitter ctx, const char *data, int size) {
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assert(ctx && data && size);
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auto ptr = reinterpret_cast<H264Splitter *>(ctx);
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ptr->input(data, size);
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}
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