mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
synced 2024-10-06 20:23:43 +08:00
112 lines
3.6 KiB
C++
112 lines
3.6 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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onH264 _cb;
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size_t _search_pos = 0;
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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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_cb(data, len);
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return 0;
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}
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static const char *onSearchPacketTail_l(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
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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
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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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const char *H264Splitter::onSearchPacketTail(const char *data, size_t len) {
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auto last_frame = data + _search_pos;
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auto next_frame = onSearchPacketTail_l(last_frame, len - _search_pos);
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if (!next_frame) {
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return nullptr;
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}
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auto last_frame_len = next_frame - last_frame;
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Frame::Ptr frame;
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if (_h265) {
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frame = Factory::getFrameFromPtr(CodecH265, (char *)last_frame, last_frame_len, 0, 0);
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} else {
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frame = Factory::getFrameFromPtr(CodecH264, (char *)last_frame, last_frame_len, 0, 0);
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}
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if (frame->decodeAble()) {
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_search_pos = 0;
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return next_frame;
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}
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_search_pos += last_frame_len;
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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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