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feat: garbage collection on startup, readable status strings, audio/float32

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studio-manager: call mxlGarbageCollectFlows before launching nodes to
clean up stale flow directories left by previous crashed runs.

shared/NodeBase.hpp: add mxl_status_str(mxlStatus) — converts error
codes to readable names (e.g. MXL_ERR_OUT_OF_RANGE_TOO_LATE). All
nodes now log these names instead of raw integers.

shared/FlowDef.hpp: use "audio/float32" as media_type for 32-bit audio
flows, matching the MXL SDK examples. audio/L{n} kept for other depths.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
JohannesItten
2026-07-03 10:20:53 +03:00
parent 39ba8add1a
commit 21a8ee4ba0
7 changed files with 52 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files
nodes/fakesink/main.cpp
+2 -2
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@@ -25,7 +25,7 @@ class FakeSinkNode : public dmf::NodeBase {
mxlFlowReader reader{};
mxlStatus st = mxlCreateFlowReader(instance(), flow_id.c_str(), nullptr, &reader);
if (st != MXL_STATUS_OK) {
log("mxlCreateFlowReader failed (status=%d)", st);
log("mxlCreateFlowReader failed (%s)", dmf::mxl_status_str(st));
return;
}
@@ -60,7 +60,7 @@ class FakeSinkNode : public dmf::NodeBase {
index = ri.headIndex;
} else {
log("unexpected status=%d on index=%llu", st, index);
log("unexpected status (%s) on index=%llu", dmf::mxl_status_str(st), index);
break;
}
nodes/ndiin/main.cpp
+3 -3
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@@ -42,7 +42,7 @@ class NDIInNode : public dmf::NodeBase {
instance(),
dmf::make_video_flow_def(video_flow_id, node_id(), width, height, fps_num, fps_den).c_str(),
nullptr, &video_writer, &video_cfg, &created);
if (st != MXL_STATUS_OK) { log("video mxlCreateFlowWriter failed (status=%d)", st); return; }
if (st != MXL_STATUS_OK) { log("video mxlCreateFlowWriter failed (%s)", dmf::mxl_status_str(st)); return; }
const uint32_t video_stride = video_cfg.discrete.sliceSizes[0];
log("video stride=%u B/line grain=%u B ring=%u grains",
@@ -71,7 +71,7 @@ class NDIInNode : public dmf::NodeBase {
fps_num, fps_den).c_str(),
nullptr, &audio_writer, &audio_cfg, &created);
if (ast != MXL_STATUS_OK) {
log("audio mxlCreateFlowWriter failed (status=%d) — continuing without audio", ast);
log("audio mxlCreateFlowWriter failed (%s) — continuing without audio", dmf::mxl_status_str(ast));
has_audio = false;
} else {
log("audio channels=%u buffer=%u samples",
@@ -146,7 +146,7 @@ class NDIInNode : public dmf::NodeBase {
grain.validSlices = grain.totalSlices;
mxlFlowWriterCommitGrain(video_writer, &grain);
} else {
log("video OpenGrain failed (status=%d) at index=%llu", st, video_index);
log("video OpenGrain failed (%s) at index=%llu", dmf::mxl_status_str(st), video_index);
}
video_index = current + 1;
}
nodes/ndiout/main.cpp
+3 -3
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@@ -65,7 +65,7 @@ class NDIOutNode : public dmf::NodeBase {
mxlFlowConfigInfo video_cfg{};
mxlStatus vst = mxlCreateFlowReader(instance(), flow_id.c_str(), nullptr, &video_reader);
if (vst != MXL_STATUS_OK) { log("video mxlCreateFlowReader failed (status=%d)", vst); return; }
if (vst != MXL_STATUS_OK) { log("video mxlCreateFlowReader failed (%s)", dmf::mxl_status_str(vst)); return; }
mxlFlowReaderGetConfigInfo(video_reader, &video_cfg);
video_stride = video_cfg.discrete.sliceSizes[0];
}
@@ -90,7 +90,7 @@ class NDIOutNode : public dmf::NodeBase {
mxlStatus ast = mxlCreateFlowReader(instance(), audio_flow_id.c_str(), nullptr, &audio_reader);
if (ast != MXL_STATUS_OK) {
log("audio mxlCreateFlowReader failed (status=%d) — continuing without audio", ast);
log("audio mxlCreateFlowReader failed (%s) — continuing without audio", dmf::mxl_status_str(ast));
has_audio = false;
} else {
mxlFlowReaderGetConfigInfo(audio_reader, &audio_cfg);
@@ -224,7 +224,7 @@ class NDIOutNode : public dmf::NodeBase {
video_index = ri.headIndex;
} else {
log("unexpected video status=%d on index=%llu", vst, video_index);
log("unexpected video status (%s) on index=%llu", dmf::mxl_status_str(vst), video_index);
break;
}
nodes/testpattern/main.cpp
+3 -3
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@@ -28,7 +28,7 @@ class TestPatternNode : public dmf::NodeBase {
instance(),
dmf::make_video_flow_def(flow_id, node_id(), width, height, fps_num, fps_den).c_str(),
nullptr, &video_writer, &video_cfg, &created);
if (vst != MXL_STATUS_OK) { log("video mxlCreateFlowWriter failed (status=%d)", vst); return; }
if (vst != MXL_STATUS_OK) { log("video mxlCreateFlowWriter failed (%s)", dmf::mxl_status_str(vst)); return; }
const uint32_t video_stride = video_cfg.discrete.sliceSizes[0];
log("video stride=%u B/line grain=%u B ring=%u grains",
@@ -55,7 +55,7 @@ class TestPatternNode : public dmf::NodeBase {
fps_num, fps_den).c_str(),
nullptr, &audio_writer, &audio_cfg, &created);
if (ast != MXL_STATUS_OK) {
log("audio mxlCreateFlowWriter failed (status=%d) — continuing without audio", ast);
log("audio mxlCreateFlowWriter failed (%s) — continuing without audio", dmf::mxl_status_str(ast));
has_audio = false;
} else {
log("audio channels=%u buffer=%u samples",
@@ -85,7 +85,7 @@ class TestPatternNode : public dmf::NodeBase {
uint8_t* video_buf = nullptr;
vst = mxlFlowWriterOpenGrain(video_writer, video_index, &video_grain, &video_buf);
if (vst != MXL_STATUS_OK) {
log("OpenGrain failed (status=%d), skipping index=%llu", vst, video_index);
log("OpenGrain failed (%s) at index=%llu", dmf::mxl_status_str(vst), video_index);
video_index++;
continue;
}
shared/FlowDef.hpp
+1 -1
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@@ -59,7 +59,7 @@ inline std::string make_audio_flow_def(
{"format", "urn:x-nmos:format:audio"},
{"label", label},
{"description", label + " MXL Audio Flow"},
{"media_type", "audio/L" + std::to_string(bit_depth)},
{"media_type", bit_depth == 32 ? "audio/float32" : "audio/L" + std::to_string(bit_depth)},
{"parents", json::array()},
{"grain_rate", {{"numerator", grain_rate_num}, {"denominator", grain_rate_den}}},
{"sample_rate", {{"numerator", sample_rate}, {"denominator", 1}}},
shared/NodeBase.hpp
+29
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@@ -10,6 +10,35 @@
namespace dmf {
inline const char* mxl_status_str(mxlStatus s) noexcept {
switch (s) {
case MXL_STATUS_OK: return "MXL_STATUS_OK";
case MXL_ERR_UNKNOWN: return "MXL_ERR_UNKNOWN";
case MXL_ERR_FLOW_NOT_FOUND: return "MXL_ERR_FLOW_NOT_FOUND";
case MXL_ERR_OUT_OF_RANGE_TOO_LATE: return "MXL_ERR_OUT_OF_RANGE_TOO_LATE";
case MXL_ERR_OUT_OF_RANGE_TOO_EARLY: return "MXL_ERR_OUT_OF_RANGE_TOO_EARLY";
case MXL_ERR_INVALID_FLOW_READER: return "MXL_ERR_INVALID_FLOW_READER";
case MXL_ERR_INVALID_FLOW_WRITER: return "MXL_ERR_INVALID_FLOW_WRITER";
case MXL_ERR_TIMEOUT: return "MXL_ERR_TIMEOUT";
case MXL_ERR_INVALID_ARG: return "MXL_ERR_INVALID_ARG";
case MXL_ERR_CONFLICT: return "MXL_ERR_CONFLICT";
case MXL_ERR_PERMISSION_DENIED: return "MXL_ERR_PERMISSION_DENIED";
case MXL_ERR_FLOW_INVALID: return "MXL_ERR_FLOW_INVALID";
case MXL_ERR_STRLEN: return "MXL_ERR_STRLEN";
case MXL_ERR_INTERRUPTED: return "MXL_ERR_INTERRUPTED";
case MXL_ERR_NO_FABRIC: return "MXL_ERR_NO_FABRIC";
case MXL_ERR_INVALID_STATE: return "MXL_ERR_INVALID_STATE";
case MXL_ERR_INTERNAL: return "MXL_ERR_INTERNAL";
case MXL_ERR_NOT_READY: return "MXL_ERR_NOT_READY";
case MXL_ERR_NOT_FOUND: return "MXL_ERR_NOT_FOUND";
case MXL_ERR_EXISTS: return "MXL_ERR_EXISTS";
case MXL_ERR_UNSUPPORTED_OPERATION: return "MXL_ERR_UNSUPPORTED_OPERATION";
default: return "MXL_ERR_UNRECOGNIZED";
}
}
// Base class for all DMF node binaries.
//
// Handles the boilerplate every node needs:
studio-manager/main.cpp
+11
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@@ -10,6 +10,7 @@
#include <fcntl.h>
#include <sys/wait.h>
#include <unistd.h>
#include <mxl/mxl.h>
#include <mxl/time.h>
#include "Signal.hpp"
#include "FlowGraph.hpp"
@@ -152,6 +153,16 @@ int main(int argc, char* argv[]) {
}
fprintf(stderr, "[studio-manager] domain: %s\n", domain.c_str());
// Clean up stale flow directories left by any previous crashed run
{
mxlInstance gc = mxlCreateInstance(domain.c_str(), nullptr);
if (gc) {
mxlGarbageCollectFlows(gc);
mxlDestroyInstance(gc);
fprintf(stderr, "[studio-manager] garbage collected stale flows\n");
}
}
// --- Build and launch the pipeline graph ---
const dmf::FlowGraph graph = build_graph();