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This commit is contained in:
cxh 2026-01-09 15:08:35 +08:00
parent 71d95e849c
commit d4d435f572
1 changed files with 38 additions and 35 deletions
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41
src/rtmp_manager.cpp
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@ -114,24 +114,25 @@ std::string RTMPManager::make_key(const std::string& name) { return name + "_mai
GstElement* RTMPManager::create_pipeline(const Camera& cam)
{
const int fps = 30;
const int bitrate = cam.bitrate; // 3.5M~4M
const int gop = fps; // 建议：1 秒一个 IDR
const int bitrate = cam.bitrate;
const int gop = fps;
const std::string stream_name = cam.name;
const std::string rtmp_url = "rtmp://127.0.0.1:1935/" + stream_name;
std::string pipeline_str = "v4l2src device=" + cam.device +
std::string pipeline_str =
// === V4L2 ===
"v4l2src device=" + cam.device +
" io-mode=dmabuf do-timestamp=true "
// ✅ 相机原生格式：完全匹配驱动
"! video/x-raw,format=NV12,"
"width=1280,height=960,framerate=30/1 "
// === 完全匹配驱动格式 ===
"! video/x-raw,format=NV12,width=1280,height=960,framerate=30/1 "
// ✅ 缓冲，只负责解耦，不丢帧
// === 解耦缓冲 ===
"! queue max-size-buffers=4 max-size-time=0 max-size-bytes=0 "
// ✅ 硬件编码
"! mpph264enc "
// === 硬件编码（命名！）===
"! mpph264enc name=enc "
"rc-mode=cbr "
"bps=" +
std::to_string(bitrate) +
@ -142,11 +143,11 @@ GstElement* RTMPManager::create_pipeline(const Camera& cam)
"profile=main "
"header-mode=each-idr "
// ✅ H.264 打包
// === H264 ===
"! h264parse config-interval=1 "
"! video/x-h264,stream-format=avc,alignment=au "
// ✅ FLV / RTMP
// === RTMP ===
"! flvmux streamable=true "
"! rtmpsink location=\"" +
rtmp_url + "\" sync=false async=false";
@ -168,8 +169,8 @@ void RTMPManager::stream_loop(Camera cam, StreamContext* ctx)
{
const std::string key = make_key(cam.name);
constexpr int64_t START_TIMEOUT_MS = 5000; // 启动阶段无帧
constexpr int64_t NO_FRAME_TIMEOUT_MS = 10000; // 运行阶段突然无帧 ⇒ pipeline 卡死重启
constexpr int64_t START_TIMEOUT_MS = 12000; // 启动阶段无帧
constexpr int64_t NO_FRAME_TIMEOUT_MS = 15000; // 运行阶段突然无帧 ⇒ pipeline 卡死重启
while (ctx->thread_running)
{
@ -198,20 +199,22 @@ void RTMPManager::stream_loop(Camera cam, StreamContext* ctx)
gst_element_set_name(pipeline, key.c_str());
GstBus* bus = gst_element_get_bus(pipeline);
// 3) 帧探测：记录 last_frame_ms
// 3) 帧探测：挂在 encoder 的 src pad（真实“视频已生成”）
ctx->last_frame_ms.store(0, std::memory_order_relaxed);
{
GstElement* src = gst_bin_get_by_name(GST_BIN(pipeline), "src");
if (src)
GstElement* enc = gst_bin_get_by_name(GST_BIN(pipeline), "enc");
if (!enc) { LOG_ERROR("[RTMP] Failed to find encoder element"); }
else
{
GstPad* pad = gst_element_get_static_pad(src, "src");
GstPad* pad = gst_element_get_static_pad(enc, "src");
if (pad)
{
gst_pad_add_probe(
pad, GST_PAD_PROBE_TYPE_BUFFER,
[](GstPad*, GstPadProbeInfo*, gpointer data) -> GstPadProbeReturn
{
auto ts = static_cast<std::atomic<int64_t>*>(data);
auto* ts = static_cast<std::atomic<int64_t>*>(data);
auto now = std::chrono::steady_clock::now().time_since_epoch();
auto ms = std::chrono::duration_cast<std::chrono::milliseconds>(now).count();
ts->store(ms, std::memory_order_relaxed);
@ -220,7 +223,7 @@ void RTMPManager::stream_loop(Camera cam, StreamContext* ctx)
&(ctx->last_frame_ms), nullptr);
gst_object_unref(pad);
}
gst_object_unref(src);
gst_object_unref(enc);
}
}