#include "ffrtmp_read.h"
#include "ADTSHeader.h"
#include "comm_interface.h"
#include <sys/socket.h>
#include <netdb.h>
#include <arpa/inet.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <unistd.h>
CFFRtmpRead::CFFRtmpRead()
{
}
CFFRtmpRead::~CFFRtmpRead()
{
}
int CFFRtmpRead::interrupt_callback(void* ctx) {
CFFRtmpRead* pThis = static_cast<CFFRtmpRead*>(ctx);
// 处理超时时间为0的情况（无限等待）
if (pThis->m_time_out_ms <= 0) {
return 0; // 永不超时
}
const int64_t timeout_us = static_cast<int64_t>(pThis->m_time_out_ms) * 1000; // 转为微秒
const int64_t elapsed = av_gettime() - pThis->m_open_start_time;
// 超时返回1（中断），否则返回0（继续）
return (elapsed >= timeout_us) ? 1 : 0;
}
int CFFRtmpRead::Start(const char *url, int time_out_ms)
{
// 添加必要的头文件后，使用现代网络API
printf("\n=== Network Diagnostics (Modern API) ===\n");
struct addrinfo hints = {0}, *res = nullptr;
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
int dns_ret = getaddrinfo("sgiothubms.tracksolidpro.com", "1936", &hints, &res);
if (dns_ret != 0) {
printf("DNS resolution failed! Error: %s\n", gai_strerror(dns_ret));
} else {
char ipstr[INET6_ADDRSTRLEN];
void *addr;
const char *ipver;
// 获取第一个IP地址
if (res->ai_family == AF_INET) { // IPv4
struct sockaddr_in *ipv4 = (struct sockaddr_in *)res->ai_addr;
addr = &(ipv4->sin_addr);
ipver = "IPv4";
} else { // IPv6
struct sockaddr_in6 *ipv6 = (struct sockaddr_in6 *)res->ai_addr;
addr = &(ipv6->sin6_addr);
ipver = "IPv6";
}
inet_ntop(res->ai_family, addr, ipstr, sizeof(ipstr));
printf("Resolved %s: %s\n", ipver, ipstr);
freeaddrinfo(res);
}
printf("==========================\n\n");
AVDictionary *options = NULL;
int ret = 0;
int sockfd;
struct sockaddr_in serv_addr;
// 1. 添加详细的协议识别日志
printf("Opening URL: %s\n", url);
printf("Protocol: %s\n", avio_find_protocol_name(url));
// 1. 移除无效的原始socket测试代码
printf("Skipping raw socket test for production\n");
m_IfmtCtx = avformat_alloc_context();
if (m_IfmtCtx == nullptr)
{
printf("[%s: %s: %d]\n", __FILE__, __FUNCTION__, __LINE__);
goto fail;
}
m_time_out_ms = time_out_ms; // 保存超时时间
// 设置超时中断回调
m_IfmtCtx->interrupt_callback.callback = &CFFRtmpRead::interrupt_callback;
m_IfmtCtx->interrupt_callback.opaque = this; // 传递当前对象指针
m_open_start_time = av_gettime(); // 记录开始时间
if (time_out_ms > 0)
{
char tmp_str[256] = {0};
snprintf(tmp_str, sizeof(tmp_str), "%d", time_out_ms * 1000); // 微秒
// 核心超时选项
av_dict_set(&options, "timeout", tmp_str, 0);
av_dict_set(&options, "rw_timeout", tmp_str, 0);
// 2. 修复RTMP关键参数
av_dict_set(&options, "rtmp_live", "any", 0); // 支持所有直播模式
av_dict_set(&options, "rtmp_buffer", "1000", 0); // 增加缓冲区
// 5. 添加TCP连接参数
av_dict_set(&options, "rtsp_transport", "tcp", 0);
av_dict_set(&options, "tcp_nodelay", "1", 0);
}
// 6. 强制使用TCP协议
av_dict_set(&options, "rtmp_proto", "tcp", 0);
// 7. 设置用户代理（部分服务器需要）
av_dict_set(&options, "user_agent", "FFmpeg/LibRtmp", 0);
// 4. 添加调试级别
av_log_set_level(AV_LOG_DEBUG);
m_IfmtCtx->probesize = 100 * 1024;
m_IfmtCtx->max_analyze_duration = AV_TIME_BASE;
// if (avformat_open_input(&m_IfmtCtx, url, NULL, &options) != 0)
// {
// perror("avformat_open_input");
// goto fail;
// }
// 6. 带详细错误处理的avformat_open_input
printf("Calling avformat_open_input...\n");
avformat_network_init();
printf("Testing raw socket connection...\n");
sockfd = socket(AF_INET, SOCK_STREAM, 0);
if (sockfd < 0) {
perror("socket creation failed");
} else {
memset(&serv_addr, 0, sizeof(serv_addr));
serv_addr.sin_family = AF_INET;
serv_addr.sin_port = htons(1936);
// 使用之前解析的IP或直接使用域名
if (inet_pton(AF_INET, "解析的IP", &serv_addr.sin_addr) <= 0) {
printf("Invalid address\n");
} else {
if (connect(sockfd, (struct sockaddr*)&serv_addr, sizeof(serv_addr))) {
perror("connect failed");
} else {
printf("Raw socket connected successfully!\n");
}
}
close(sockfd);
}
ret = avformat_open_input(&m_IfmtCtx, url, NULL, &options);
if (ret != 0) {
char errbuf[256];
av_strerror(ret, errbuf, sizeof(errbuf));
// 获取更多系统级错误信息
const char* sys_err = strerror(errno);
printf("avformat_open_input failed (%d): %s\n", ret, errbuf);
printf("System error: %d - %s\n", errno, sys_err);
// 检查是否超时触发
if (ret == AVERROR_EXIT) {
printf("Operation aborted by interrupt callback\n");
}
goto fail;
}
if (options != nullptr)
{
av_dict_free(&options);
}
if (avformat_find_stream_info(m_IfmtCtx, NULL) < 0)
{
perror("avformat_find_stream_info");
fprintf(stdout, "Couldn't find stream information \n");
goto fail;
}
if (m_IfmtCtx->nb_streams == 0)
{
printf("nb_streams is 0,exit \n");
goto fail;
}
m_VideoStreamIndex = av_find_best_stream(m_IfmtCtx, AVMEDIA_TYPE_VIDEO, -1, -1, NULL, 0);
if (m_VideoStreamIndex < 0)
{
printf("Didn't find a video stream\n");
}
else
{
// m_VideoType = m_IfmtCtx->streams[m_VideoStreamIndex]->codecpar->codec_id;
}
printf("m_VideoStreamIndex = %d\n", m_VideoStreamIndex);
m_AudioStreamIndex = av_find_best_stream(m_IfmtCtx, AVMEDIA_TYPE_AUDIO, -1, -1, NULL, 0);
if (m_AudioStreamIndex < 0)
{
printf("Didn't find a audio stream \n");
}
else
{
m_AudioType = m_IfmtCtx->streams[m_AudioStreamIndex]->codecpar->codec_id;
}
printf("m_AudioStreamIndex = %d\n", m_AudioStreamIndex);
m_AvPacket = av_packet_alloc();
if (m_AvPacket == nullptr)
{
printf("[%s: %s: %d]\n", __FILE__, __FUNCTION__, __LINE__);
goto fail;
}
av_dump_format(m_IfmtCtx, 0, url, 0);
return 0;
fail:
printf("[%s: %s: %d] open %s fail\n", __FILE__, __FUNCTION__, __LINE__, url);
Stop();
return -1;
}
void CFFRtmpRead::Stop()
{
if (m_IfmtCtx != nullptr)
{
avformat_close_input(&m_IfmtCtx);
avformat_free_context(m_IfmtCtx);
m_IfmtCtx = nullptr;
}
if (m_AvPacket != nullptr)
{
av_free(m_AvPacket);
m_AvPacket = nullptr;
}
m_VideoStreamIndex = -1;
m_AudioStreamIndex = -1;
m_VideoType = AV_CODEC_ID_NONE;
m_AudioType = AV_CODEC_ID_NONE;
m_Buffer.Drain();
}
uint8_t *CFFRtmpRead::GetStream(FrameInfo_t &FrameInfo)
{
m_Buffer.Drain();
int ret = av_read_frame(m_IfmtCtx, m_AvPacket);
if (ret >= 0)
{
if (m_AvPacket->stream_index == m_VideoStreamIndex)
{
AVRational time_base = m_IfmtCtx->streams[m_VideoStreamIndex]->time_base;
AVRational time_base_q = {1, AV_TIME_BASE};
FrameInfo.frame_pts = av_rescale_q(m_AvPacket->dts, time_base, time_base_q);
FrameInfo.frame_mode = m_VideoType == AV_CODEC_ID_H265 ? 1 : 0;
FrameInfo.frame_type = m_AvPacket->flags ? 1 : 0;
m_Buffer.Add(m_AvPacket->data, m_AvPacket->size);
FrameInfo.frame_len = m_Buffer.Length();
av_packet_unref(m_AvPacket);
}
else if (m_AvPacket->stream_index == m_AudioStreamIndex)
{
ADTS_Header header(m_IfmtCtx->streams[m_AudioStreamIndex]->codecpar->sample_rate, m_IfmtCtx->streams[m_AudioStreamIndex]->codecpar->ch_layout.nb_channels, m_AvPacket->size + 7);
m_Buffer.Add(&header, sizeof(ADTS_Header));
m_Buffer.Add(m_AvPacket->data, m_AvPacket->size);
FrameInfo.frame_len = m_Buffer.Length();
FrameInfo.frame_type = 3;
FrameInfo.frame_mode = m_AudioType == AV_CODEC_ID_AAC ? 5 : 3;
AVRational time_base = m_IfmtCtx->streams[m_AudioStreamIndex]->time_base;
AVRational time_base_q = {1, AV_TIME_BASE};
FrameInfo.frame_pts = av_rescale_q(m_AvPacket->dts, time_base, time_base_q);
av_packet_unref(m_AvPacket);
}
if (m_Buffer.Length() > 0)
{
return m_Buffer.Buffer();
}
}
return nullptr;
}
更改后代码如上，测试依旧失败，报错信息如下
=== Network Diagnostics (Modern API) ===
Resolved IPv4: 124.243.184.237
==========================
Opening URL: rtmp://sgiothubms.tracksolidpro.com:1936/16/865478070000569
Protocol: rtmp
Skipping raw socket test for production
Calling avformat_open_input...
Testing raw socket connection...
Invalid address
[NULL @ 0xb28005a0] Opening 'rtmp://sgiothubms.tracksolidpro.com:1936/16/865478070000569' for reading
[rtmp @ 0xb2800a00] No default whitelist set
[tcp @ 0xb2800b30] No default whitelist set
[rtmp @ 0xb2800a00] Cannot open connection tcp://sgiothubms.tracksolidpro.com:1936?listen&listen_timeout=2000000000&tcp_nodelay=1
avformat_open_input failed (-99): Cannot assign requested address
System error: 99 - Cannot assign requested address
[ffrtmp_read.cpp: Start: 222] open rtmp://sgiothubms.tracksolidpro.com:1936/16/865478070000569 fail
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本文详细解释了在使用FFmpeg-full-SDK-3.2时遇到的avformat_alloc_context无法识别问题，并提供了解决方案：将oc=avformat_alloc_context修改为oc=av_alloc_format_context();。适用于对FFmpeg进行编程和开发的读者。
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