refactor capture with broadcast.

server/cmd/serve.go

@@ -21,7 +21,6 @@ func init() {
 		neko.Service.WebRTC,
 		neko.Service.Capture,
 		neko.Service.Desktop,
-		neko.Service.Broadcast,
 		neko.Service.WebSocket,
 	}
 

server/internal/capture/broadcast.go

@@ -7,98 +7,115 @@ import (
 	"github.com/rs/zerolog/log"
 
 	"m1k1o/neko/internal/capture/gst"
-	"m1k1o/neko/internal/config"
+	"m1k1o/neko/internal/types"
 )
 
-type BroadcastManager struct {
+type BroacastManagerCtx struct {
-	mu       sync.Mutex
+	logger zerolog.Logger
-	logger   zerolog.Logger
+	mu     sync.Mutex
-	pipeline *gst.Pipeline
+
-	capture  *config.Capture
+	pipeline   *gst.Pipeline
-	config   *config.Broadcast
+	pipelineMu sync.Mutex
-	enabled  bool
+	pipelineFn func(url string) (*gst.Pipeline, error)
-	url      string
+
+	url     string
+	started bool
 }
 
-func NewBroadcast(capture *config.Capture, config *config.Broadcast) *BroadcastManager {
+func broadcastNew(pipelineFn func(url string) (*gst.Pipeline, error), url string, started bool) *BroacastManagerCtx {
-	return &BroadcastManager{
+	logger := log.With().
-		logger:  log.With().Str("module", "broadcast").Logger(),
+		Str("module", "capture").
-		capture: capture,
+		Str("submodule", "broadcast").
-		config:  config,
+		Logger()
-		enabled: config.Enabled,
+
-		url:     config.URL,
+	return &BroacastManagerCtx{
+		logger:     logger,
+		pipelineFn: pipelineFn,
+		url:        url,
+		started:    started,
 	}
 }
 
-func (manager *BroadcastManager) Shutdown() error {
+func (manager *BroacastManagerCtx) shutdown() {
-	manager.Destroy()
+	manager.logger.Info().Msgf("shutdown")
+
+	manager.destroyPipeline()
+}
+
+func (manager *BroacastManagerCtx) Start(url string) error {
+	manager.mu.Lock()
+	defer manager.mu.Unlock()
+
+	err := manager.createPipeline()
+	if err != nil {
+		return err
+	}
+
+	manager.url = url
+	manager.started = true
 	return nil
 }
 
-func (manager *BroadcastManager) Start() error {
+func (manager *BroacastManagerCtx) Stop() {
-	if !manager.enabled || manager.IsActive() {
+	manager.mu.Lock()
-		return nil
+	defer manager.mu.Unlock()
+
+	manager.started = false
+	manager.destroyPipeline()
+}
+
+func (manager *BroacastManagerCtx) Started() bool {
+	manager.mu.Lock()
+	defer manager.mu.Unlock()
+
+	return manager.started
+}
+
+func (manager *BroacastManagerCtx) Url() string {
+	manager.mu.Lock()
+	defer manager.mu.Unlock()
+
+	return manager.url
+}
+
+func (manager *BroacastManagerCtx) createPipeline() error {
+	manager.pipelineMu.Lock()
+	defer manager.pipelineMu.Unlock()
+
+	if manager.pipeline != nil {
+		return types.ErrCapturePipelineAlreadyExists
 	}
 
 	var err error
-	manager.pipeline, err = CreateRTMPPipeline(
-		manager.capture.Device,
-		manager.capture.Display,
-		manager.config.Pipeline,
-		manager.url,
-	)
 
+	manager.logger.Info().
+		Str("url", manager.url).
+		Msgf("creating pipeline")
+
+	manager.pipeline, err = manager.pipelineFn(manager.url)
 	if err != nil {
-		manager.pipeline = nil
 		return err
 	}
 
 	manager.logger.Info().
-		Str("audio_device", manager.capture.Device).
+		Str("url", manager.url).
-		Str("video_display", manager.capture.Display).
+		Str("src", manager.pipeline.Src).
-		Str("rtmp_pipeline_src", manager.pipeline.Src).
+		Msgf("created pipeline")
-		Msgf("RTMP pipeline is starting...")
 
 	manager.pipeline.Play()
+
 	return nil
 }
 
-func (manager *BroadcastManager) Stop() {
+func (manager *BroacastManagerCtx) destroyPipeline() {
-	if !manager.IsActive() {
+	manager.pipelineMu.Lock()
+	defer manager.pipelineMu.Unlock()
+
+	if manager.pipeline == nil {
 		return
 	}
 
-	manager.pipeline.Stop()
+	manager.pipeline.Destroy()
+	manager.logger.Info().Msgf("destroying pipeline")
 	manager.pipeline = nil
 }
-
-func (manager *BroadcastManager) IsActive() bool {
-	return manager.pipeline != nil
-}
-
-func (manager *BroadcastManager) Create(url string) error {
-	manager.mu.Lock()
-	defer manager.mu.Unlock()
-
-	manager.url = url
-	manager.enabled = true
-
-	err := manager.Start()
-	if err != nil {
-		manager.enabled = false
-	}
-
-	return err
-}
-
-func (manager *BroadcastManager) Destroy() {
-	manager.mu.Lock()
-	defer manager.mu.Unlock()
-
-	manager.Stop()
-	manager.enabled = false
-}
-
-func (manager *BroadcastManager) GetUrl() string {
-	return manager.url
-}

server/internal/capture/gst/gst.c

@@ -1,83 +1,202 @@
 #include "gst.h"
 
-typedef struct SampleHandlerUserData {
+static void gstreamer_pipeline_log(GstPipelineCtx *ctx, char* level, const char* format, ...) {
-  int pipelineId;
+  va_list argptr;
-} SampleHandlerUserData;
+  va_start(argptr, format);
-
+  char buffer[100];
-void gstreamer_init(void) {
+  vsprintf(buffer, format, argptr);
-  gst_init(NULL, NULL);
+  va_end(argptr);
+  goPipelineLog(level, buffer, ctx->pipelineId);
 }
 
-static gboolean gstreamer_send_bus_call(GstBus *bus, GstMessage *msg, gpointer data) {
+static gboolean gstreamer_bus_call(GstBus *bus, GstMessage *msg, gpointer user_data) {
+  GstPipelineCtx *ctx = (GstPipelineCtx *)user_data;
+
   switch (GST_MESSAGE_TYPE(msg)) {
+    case GST_MESSAGE_EOS: {
+      gstreamer_pipeline_log(ctx, "fatal", "end of stream");
+      break;
+    }
 
-  case GST_MESSAGE_EOS:
+    case GST_MESSAGE_STATE_CHANGED: {
-    g_print("End of stream\n");
+      GstState old_state, new_state;
-    exit(1);
+      gst_message_parse_state_changed(msg, &old_state, &new_state, NULL);
-    break;
 
-  case GST_MESSAGE_ERROR: {
+      gstreamer_pipeline_log(ctx, "debug",
-    gchar *debug;
+        "element %s changed state from %s to %s",
-    GError *error;
+          GST_OBJECT_NAME(msg->src),
+          gst_element_state_get_name(old_state),
+          gst_element_state_get_name(new_state));
+      break;
+    }
 
-    gst_message_parse_error(msg, &error, &debug);
+    case GST_MESSAGE_TAG: {
-    g_free(debug);
+      GstTagList *tags = NULL;
+      gst_message_parse_tag(msg, &tags);
 
-    g_printerr("Error: %s\n", error->message);
+      gstreamer_pipeline_log(ctx, "debug",
-    g_error_free(error);
+        "got tags from element %s",
-    exit(1);
+          GST_OBJECT_NAME(msg->src));
-  }
+
-  default:
+      gst_tag_list_unref(tags);
-    break;
+      break;
+    }
+
+    case GST_MESSAGE_ERROR: {
+      GError *err = NULL;
+      gchar *dbg_info = NULL;
+      gst_message_parse_error(msg, &err, &dbg_info);
+
+      gstreamer_pipeline_log(ctx, "error",
+        "error from element %s: %s",
+          GST_OBJECT_NAME(msg->src), err->message);
+      gstreamer_pipeline_log(ctx, "warn",
+        "debugging info: %s",
+          (dbg_info) ? dbg_info : "none");
+
+      g_error_free(err);
+      g_free(dbg_info);
+      break;
+    }
+
+    default:
+      gstreamer_pipeline_log(ctx, "trace", "unknown message");
+      break;
   }
 
   return TRUE;
 }
 
-GstFlowReturn gstreamer_send_new_sample_handler(GstElement *object, gpointer user_data) {
+GstPipelineCtx *gstreamer_pipeline_create(char *pipelineStr, int pipelineId, GError **error) {
+  GstElement *pipeline = gst_parse_launch(pipelineStr, error);
+  if (pipeline == NULL) return NULL;
+
+  // create gstreamer pipeline context
+  GstPipelineCtx *ctx = calloc(1, sizeof(GstPipelineCtx));
+  ctx->pipelineId = pipelineId;
+  ctx->pipeline = pipeline;
+
+  GstBus *bus = gst_pipeline_get_bus(GST_PIPELINE(pipeline));
+  gst_bus_add_watch(bus, gstreamer_bus_call, ctx);
+  gst_object_unref(bus);
+
+  return ctx;
+}
+
+static GstFlowReturn gstreamer_send_new_sample_handler(GstElement *object, gpointer user_data) {
+  GstPipelineCtx *ctx = (GstPipelineCtx *)user_data;
   GstSample *sample = NULL;
   GstBuffer *buffer = NULL;
   gpointer copy = NULL;
   gsize copy_size = 0;
-  SampleHandlerUserData *s = (SampleHandlerUserData *)user_data;
 
-  g_signal_emit_by_name (object, "pull-sample", &sample);
+  g_signal_emit_by_name(object, "pull-sample", &sample);
   if (sample) {
     buffer = gst_sample_get_buffer(sample);
     if (buffer) {
       gst_buffer_extract_dup(buffer, 0, gst_buffer_get_size(buffer), &copy, &copy_size);
-      goHandlePipelineBuffer(copy, copy_size, GST_BUFFER_DURATION(buffer), s->pipelineId);
+      goHandlePipelineBuffer(copy, copy_size, GST_BUFFER_DURATION(buffer), ctx->pipelineId);
     }
-    gst_sample_unref (sample);
+    gst_sample_unref(sample);
   }
 
   return GST_FLOW_OK;
 }
 
-GstElement *gstreamer_send_create_pipeline(char *pipeline, GError **error) {
+void gstreamer_pipeline_attach_appsink(GstPipelineCtx *ctx, char *sinkName) {
-  return gst_parse_launch(pipeline, error);
+  ctx->appsink = gst_bin_get_by_name(GST_BIN(ctx->pipeline), sinkName);
+  g_object_set(ctx->appsink, "emit-signals", TRUE, NULL);
+  g_signal_connect(ctx->appsink, "new-sample", G_CALLBACK(gstreamer_send_new_sample_handler), ctx);
 }
 
-void gstreamer_send_start_pipeline(GstElement *pipeline, int pipelineId) {
+void gstreamer_pipeline_attach_appsrc(GstPipelineCtx *ctx, char *srcName) {
-  SampleHandlerUserData *s = calloc(1, sizeof(SampleHandlerUserData));
+  ctx->appsrc = gst_bin_get_by_name(GST_BIN(ctx->pipeline), srcName);
-  s->pipelineId = pipelineId;
-
-  GstBus *bus = gst_pipeline_get_bus(GST_PIPELINE(pipeline));
-  gst_bus_add_watch(bus, gstreamer_send_bus_call, NULL);
-  gst_object_unref(bus);
-
-  GstElement *appsink = gst_bin_get_by_name(GST_BIN(pipeline), "appsink");
-  g_object_set(appsink, "emit-signals", TRUE, NULL);
-  g_signal_connect(appsink, "new-sample", G_CALLBACK(gstreamer_send_new_sample_handler), s);
-  gst_object_unref(appsink);
-
-  gst_element_set_state(pipeline, GST_STATE_PLAYING);
 }
 
-void gstreamer_send_play_pipeline(GstElement *pipeline) {
+void gstreamer_pipeline_play(GstPipelineCtx *ctx) {
-  gst_element_set_state(pipeline, GST_STATE_PLAYING);
+  gst_element_set_state(GST_ELEMENT(ctx->pipeline), GST_STATE_PLAYING);
 }
 
-void gstreamer_send_stop_pipeline(GstElement *pipeline) {
+void gstreamer_pipeline_pause(GstPipelineCtx *ctx) {
-  gst_element_set_state(pipeline, GST_STATE_NULL);
+  gst_element_set_state(GST_ELEMENT(ctx->pipeline), GST_STATE_PAUSED);
+}
+
+void gstreamer_pipeline_destory(GstPipelineCtx *ctx) {
+  // end appsrc, if exists
+  if (ctx->appsrc) {
+    gst_app_src_end_of_stream(GST_APP_SRC(ctx->appsrc));
+  }
+
+  // send pipeline eos
+  gst_element_send_event(GST_ELEMENT(ctx->pipeline), gst_event_new_eos());
+
+  // set null state
+  gst_element_set_state(GST_ELEMENT(ctx->pipeline), GST_STATE_NULL);
+
+  if (ctx->appsink) {
+    gst_object_unref(ctx->appsink);
+    ctx->appsink = NULL;
+  }
+
+  if (ctx->appsrc) {
+    gst_object_unref(ctx->appsrc);
+    ctx->appsrc = NULL;
+  }
+
+  gst_object_unref(ctx->pipeline);
+}
+
+void gstreamer_pipeline_push(GstPipelineCtx *ctx, void *buffer, int bufferLen) {
+  if (ctx->appsrc != NULL) {
+    gpointer p = g_memdup(buffer, bufferLen);
+    GstBuffer *buffer = gst_buffer_new_wrapped(p, bufferLen);
+    gst_app_src_push_buffer(GST_APP_SRC(ctx->appsrc), buffer);
+  }
+}
+
+gboolean gstreamer_pipeline_set_prop_int(GstPipelineCtx *ctx, char *binName, char *prop, gint value) {
+  GstElement *el = gst_bin_get_by_name(GST_BIN(ctx->pipeline), binName);
+  if (el == NULL) return FALSE;
+
+  g_object_set(G_OBJECT(el),
+    prop, value,
+    NULL);
+
+  gst_object_unref(el);
+  return TRUE;
+}
+
+gboolean gstreamer_pipeline_set_caps_framerate(GstPipelineCtx *ctx, const gchar* binName, gint numerator, gint denominator) {
+  GstElement *el = gst_bin_get_by_name(GST_BIN(ctx->pipeline), binName);
+  if (el == NULL) return FALSE;
+
+  GstCaps *caps = gst_caps_new_simple("video/x-raw",
+    "framerate", GST_TYPE_FRACTION, numerator, denominator,
+    NULL);
+
+  g_object_set(G_OBJECT(el),
+    "caps", caps,
+    NULL);
+
+  gst_caps_unref(caps);
+  gst_object_unref(el);
+  return TRUE;
+}
+
+gboolean gstreamer_pipeline_set_caps_resolution(GstPipelineCtx *ctx, const gchar* binName, gint width, gint height) {
+  GstElement *el = gst_bin_get_by_name(GST_BIN(ctx->pipeline), binName);
+  if (el == NULL) return FALSE;
+
+  GstCaps *caps = gst_caps_new_simple("video/x-raw",
+    "width", G_TYPE_INT, width,
+    "height", G_TYPE_INT, height,
+    NULL);
+
+  g_object_set(G_OBJECT(el),
+    "caps", caps,
+    NULL);
+
+  gst_caps_unref(caps);
+  gst_object_unref(el);
+  return TRUE;
 }

server/internal/capture/gst/gst.go

@@ -9,68 +9,146 @@ import "C"
 import (
 	"fmt"
 	"sync"
+	"sync/atomic"
 	"time"
 	"unsafe"
 
+	"github.com/rs/zerolog"
+	"github.com/rs/zerolog/log"
+
 	"m1k1o/neko/internal/types"
 )
 
-// Pipeline is a wrapper for a GStreamer Pipeline
 type Pipeline struct {
-	Pipeline *C.GstElement
+	id     int
-	Sample   chan types.Sample
+	logger zerolog.Logger
-	Src      string
+	Src    string
-	id       int
+	Ctx    *C.GstPipelineCtx
+	Sample chan types.Sample
 }
 
+var pSerial int32
 var pipelines = make(map[int]*Pipeline)
 var pipelinesLock sync.Mutex
 var registry *C.GstRegistry
 
 func init() {
-	C.gstreamer_init()
+	C.gst_init(nil, nil)
 	registry = C.gst_registry_get()
 }
 
-// CreatePipeline creates a GStreamer Pipeline
 func CreatePipeline(pipelineStr string) (*Pipeline, error) {
+	id := atomic.AddInt32(&pSerial, 1)
+
 	pipelineStrUnsafe := C.CString(pipelineStr)
 	defer C.free(unsafe.Pointer(pipelineStrUnsafe))
 
 	pipelinesLock.Lock()
 	defer pipelinesLock.Unlock()
 
-	var err *C.GError
+	var gstError *C.GError
-	gstPipeline := C.gstreamer_send_create_pipeline(pipelineStrUnsafe, &err)
+	ctx := C.gstreamer_pipeline_create(pipelineStrUnsafe, C.int(id), &gstError)
-	if err != nil {
+
-		defer C.g_error_free(err)
+	if gstError != nil {
-		return nil, fmt.Errorf("%s", C.GoString(err.message))
+		defer C.g_error_free(gstError)
+		return nil, fmt.Errorf("(pipeline error) %s", C.GoString(gstError.message))
 	}
 
 	p := &Pipeline{
-		Pipeline: gstPipeline,
+		id: int(id),
-		Sample:   make(chan types.Sample),
+		logger: log.With().
-		Src:      pipelineStr,
+			Str("module", "capture").
-		id:       len(pipelines),
+			Str("submodule", "gstreamer").
+			Int("pipeline_id", int(id)).Logger(),
+		Src:    pipelineStr,
+		Ctx:    ctx,
+		Sample: make(chan types.Sample),
 	}
 
 	pipelines[p.id] = p
 	return p, nil
 }
 
-// Start starts the GStreamer Pipeline
+func (p *Pipeline) AttachAppsink(sinkName string) {
-func (p *Pipeline) Start() {
+	sinkNameUnsafe := C.CString(sinkName)
-	C.gstreamer_send_start_pipeline(p.Pipeline, C.int(p.id))
+	defer C.free(unsafe.Pointer(sinkNameUnsafe))
+
+	C.gstreamer_pipeline_attach_appsink(p.Ctx, sinkNameUnsafe)
+}
+
+func (p *Pipeline) AttachAppsrc(srcName string) {
+	srcNameUnsafe := C.CString(srcName)
+	defer C.free(unsafe.Pointer(srcNameUnsafe))
+
+	C.gstreamer_pipeline_attach_appsrc(p.Ctx, srcNameUnsafe)
 }
 
-// Play starts the GStreamer Pipeline
 func (p *Pipeline) Play() {
-	C.gstreamer_send_play_pipeline(p.Pipeline)
+	C.gstreamer_pipeline_play(p.Ctx)
 }
 
-// Stop stops the GStreamer Pipeline
+func (p *Pipeline) Pause() {
-func (p *Pipeline) Stop() {
+	C.gstreamer_pipeline_pause(p.Ctx)
-	C.gstreamer_send_stop_pipeline(p.Pipeline)
+}
+
+func (p *Pipeline) Destroy() {
+	C.gstreamer_pipeline_destory(p.Ctx)
+
+	pipelinesLock.Lock()
+	delete(pipelines, p.id)
+	pipelinesLock.Unlock()
+
+	close(p.Sample)
+	C.free(unsafe.Pointer(p.Ctx))
+	p = nil
+}
+
+func (p *Pipeline) Push(buffer []byte) {
+	bytes := C.CBytes(buffer)
+	defer C.free(bytes)
+
+	C.gstreamer_pipeline_push(p.Ctx, bytes, C.int(len(buffer)))
+}
+
+func (p *Pipeline) SetPropInt(binName string, prop string, value int) bool {
+	cBinName := C.CString(binName)
+	defer C.free(unsafe.Pointer(cBinName))
+
+	cProp := C.CString(prop)
+	defer C.free(unsafe.Pointer(cProp))
+
+	cValue := C.int(value)
+
+	p.logger.Debug().Msgf("setting prop %s of %s to %d", prop, binName, value)
+
+	ok := C.gstreamer_pipeline_set_prop_int(p.Ctx, cBinName, cProp, cValue)
+	return ok == C.TRUE
+}
+
+func (p *Pipeline) SetCapsFramerate(binName string, numerator, denominator int) bool {
+	cBinName := C.CString(binName)
+	cNumerator := C.int(numerator)
+	cDenominator := C.int(denominator)
+
+	defer C.free(unsafe.Pointer(cBinName))
+
+	p.logger.Debug().Msgf("setting caps framerate of %s to %d/%d", binName, numerator, denominator)
+
+	ok := C.gstreamer_pipeline_set_caps_framerate(p.Ctx, cBinName, cNumerator, cDenominator)
+	return ok == C.TRUE
+}
+
+func (p *Pipeline) SetCapsResolution(binName string, width, height int) bool {
+	cBinName := C.CString(binName)
+	cWidth := C.int(width)
+	cHeight := C.int(height)
+
+	defer C.free(unsafe.Pointer(cBinName))
+
+	p.logger.Debug().Msgf("setting caps resolution of %s to %dx%d", binName, width, height)
+
+	ok := C.gstreamer_pipeline_set_caps_resolution(p.Ctx, cBinName, cWidth, cHeight)
+	return ok == C.TRUE
 }
 
 // gst-inspect-1.0
@@ -90,14 +168,35 @@ func CheckPlugins(plugins []string) error {
 
 //export goHandlePipelineBuffer
 func goHandlePipelineBuffer(buffer unsafe.Pointer, bufferLen C.int, duration C.int, pipelineID C.int) {
+	defer C.free(buffer)
+
 	pipelinesLock.Lock()
 	pipeline, ok := pipelines[int(pipelineID)]
 	pipelinesLock.Unlock()
 
 	if ok {
-		pipeline.Sample <- types.Sample{Data: C.GoBytes(buffer, bufferLen), Timestamp: time.Now(), Duration: time.Duration(duration)}
+		pipeline.Sample <- types.Sample{
+			Data:     C.GoBytes(buffer, bufferLen),
+			Duration: time.Duration(duration),
+		}
 	} else {
-		fmt.Printf("discarding buffer, no pipeline with id %d", int(pipelineID))
+		log.Warn().
+			Str("module", "capture").
+			Str("submodule", "gstreamer").
+			Int("pipeline_id", int(pipelineID)).
+			Msgf("discarding sample, pipeline not found")
 	}
-	C.free(buffer)
+}
+
+//export goPipelineLog
+func goPipelineLog(levelUnsafe *C.char, msgUnsafe *C.char, pipelineID C.int) {
+	levelStr := C.GoString(levelUnsafe)
+	msg := C.GoString(msgUnsafe)
+
+	level, _ := zerolog.ParseLevel(levelStr)
+	log.WithLevel(level).
+		Str("module", "capture").
+		Str("submodule", "gstreamer").
+		Int("pipeline_id", int(pipelineID)).
+		Msg(msg)
 }

server/internal/capture/gst/gst.h

@@ -1,13 +1,27 @@
 #pragma once
 
+#include <stdio.h>
 #include <gst/gst.h>
 #include <gst/app/gstappsrc.h>
 
+typedef struct GstPipelineCtx {
+  int pipelineId;
+  GstElement *pipeline;
+  GstElement *appsink;
+  GstElement *appsrc;
+} GstPipelineCtx;
+
 extern void goHandlePipelineBuffer(void *buffer, int bufferLen, int samples, int pipelineId);
+extern void goPipelineLog(char *level, char *msg, int pipelineId);
 
-GstElement *gstreamer_send_create_pipeline(char *pipeline, GError **error);
+GstPipelineCtx *gstreamer_pipeline_create(char *pipelineStr, int pipelineId, GError **error);
+void gstreamer_pipeline_attach_appsink(GstPipelineCtx *ctx, char *sinkName);
+void gstreamer_pipeline_attach_appsrc(GstPipelineCtx *ctx, char *srcName);
+void gstreamer_pipeline_play(GstPipelineCtx *ctx);
+void gstreamer_pipeline_pause(GstPipelineCtx *ctx);
+void gstreamer_pipeline_destory(GstPipelineCtx *ctx);
+void gstreamer_pipeline_push(GstPipelineCtx *ctx, void *buffer, int bufferLen);
 
-void gstreamer_send_start_pipeline(GstElement *pipeline, int pipelineId);
+gboolean gstreamer_pipeline_set_prop_int(GstPipelineCtx *ctx, char *binName, char *prop, gint value);
-void gstreamer_send_play_pipeline(GstElement *pipeline);
+gboolean gstreamer_pipeline_set_caps_framerate(GstPipelineCtx *ctx, const gchar* binName, gint numerator, gint denominator);
-void gstreamer_send_stop_pipeline(GstElement *pipeline);
+gboolean gstreamer_pipeline_set_caps_resolution(GstPipelineCtx *ctx, const gchar* binName, gint width, gint height);
-void gstreamer_init(void);

server/internal/capture/manager.go

@@ -1,199 +1,99 @@
 package capture
 
 import (
-	"time"
+	"errors"
+
+	"github.com/rs/zerolog"
+	"github.com/rs/zerolog/log"
 
 	"m1k1o/neko/internal/capture/gst"
 	"m1k1o/neko/internal/config"
 	"m1k1o/neko/internal/types"
-
-	"github.com/kataras/go-events"
-	"github.com/rs/zerolog"
-	"github.com/rs/zerolog/log"
 )
 
 type CaptureManagerCtx struct {
-	logger    zerolog.Logger
+	logger  zerolog.Logger
-	video     *gst.Pipeline
+	desktop types.DesktopManager
-	audio     *gst.Pipeline
+
-	config    *config.Capture
+	// sinks
-	broadcast types.BroadcastManager
+	broadcast *BroacastManagerCtx
-	desktop   types.DesktopManager
+	audio     *StreamSinkManagerCtx
-	cleanup   *time.Ticker
+	video     *StreamSinkManagerCtx
-	shutdown  chan bool
-	emmiter   events.EventEmmiter
-	streaming bool
 }
 
-func New(desktop types.DesktopManager, broadcast types.BroadcastManager, config *config.Capture) *CaptureManagerCtx {
+func New(desktop types.DesktopManager, config *config.Capture) *CaptureManagerCtx {
+	logger := log.With().Str("module", "capture").Logger()
+
 	return &CaptureManagerCtx{
-		logger:    log.With().Str("module", "capture").Logger(),
+		logger:  logger,
-		cleanup:   time.NewTicker(1 * time.Second),
+		desktop: desktop,
-		shutdown:  make(chan bool),
+
-		emmiter:   events.New(),
+		// sinks
-		config:    config,
+		broadcast: broadcastNew(func(url string) (*gst.Pipeline, error) {
-		broadcast: broadcast,
+			return NewBroadcastPipeline(config.AudioDevice, config.Display, config.BroadcastPipeline, url)
-		desktop:   desktop,
+		}, config.BroadcastUrl, config.BroadcastStarted),
-		streaming: false,
+		audio: streamSinkNew(config.AudioCodec, func() (*gst.Pipeline, error) {
+			return NewAudioPipeline(config.AudioCodec, config.AudioDevice, config.AudioPipeline, config.AudioBitrate)
+		}, "audio"),
+		video: streamSinkNew(config.VideoCodec, func() (*gst.Pipeline, error) {
+			return NewVideoPipeline(config.VideoCodec, config.Display, config.VideoPipeline, config.VideoMaxFPS, config.VideoBitrate, config.VideoHWEnc)
+		}, "audio"),
 	}
 }
 
-func (manager *CaptureManagerCtx) VideoCodec() string {
-	return manager.config.VideoCodec
-}
-
-func (manager *CaptureManagerCtx) AudioCodec() string {
-	return manager.config.AudioCodec
-}
-
 func (manager *CaptureManagerCtx) Start() {
-	manager.createPipelines()
+	if manager.broadcast.Started() {
-	if err := manager.broadcast.Start(); err != nil {
+		if err := manager.broadcast.createPipeline(); err != nil {
-		manager.logger.Panic().Err(err).Msg("unable to create rtmp pipeline")
+			manager.logger.Panic().Err(err).Msg("unable to create broadcast pipeline")
+		}
 	}
 
-	go func() {
+	manager.desktop.OnBeforeScreenSizeChange(func() {
-		defer func() {
+		if manager.video.Started() {
-			manager.logger.Info().Msg("shutdown")
+			manager.video.destroyPipeline()
-		}()
+		}
 
-		for {
+		if manager.broadcast.Started() {
-			select {
+			manager.broadcast.destroyPipeline()
-			case <-manager.shutdown:
+		}
-				return
+	})
-			case sample := <-manager.video.Sample:
+
-				manager.emmiter.Emit("video", sample)
+	manager.desktop.OnAfterScreenSizeChange(func() {
-			case sample := <-manager.audio.Sample:
+		if manager.video.Started() {
-				manager.emmiter.Emit("audio", sample)
+			err := manager.video.createPipeline()
-			case <-manager.cleanup.C:
+			if err != nil && !errors.Is(err, types.ErrCapturePipelineAlreadyExists) {
-				// TODO: refactor.
+				manager.logger.Panic().Err(err).Msg("unable to recreate video pipeline")
 			}
 		}
-	}()
+
+		if manager.broadcast.Started() {
+			err := manager.broadcast.createPipeline()
+			if err != nil && !errors.Is(err, types.ErrCapturePipelineAlreadyExists) {
+				manager.logger.Panic().Err(err).Msg("unable to recreate broadcast pipeline")
+			}
+		}
+	})
 }
 
 func (manager *CaptureManagerCtx) Shutdown() error {
-	manager.logger.Info().Msgf("capture shutting down")
+	manager.logger.Info().Msgf("shutdown")
-	manager.video.Stop()
-	manager.audio.Stop()
-	manager.broadcast.Stop()
 
-	manager.cleanup.Stop()
+	manager.broadcast.shutdown()
-	manager.shutdown <- true
-	return nil
-}
 
-func (manager *CaptureManagerCtx) OnVideoFrame(listener func(sample types.Sample)) {
+	manager.audio.shutdown()
-	manager.emmiter.On("video", func(payload ...interface{}) {
+	manager.video.shutdown()
-		listener(payload[0].(types.Sample))
-	})
-}
-
-func (manager *CaptureManagerCtx) OnAudioFrame(listener func(sample types.Sample)) {
-	manager.emmiter.On("audio", func(payload ...interface{}) {
-		listener(payload[0].(types.Sample))
-	})
-}
-
-func (manager *CaptureManagerCtx) StartStream() {
-	manager.createPipelines()
-
-	manager.logger.Info().
-		Str("video_display", manager.config.Display).
-		Str("video_codec", manager.config.VideoCodec).
-		Str("audio_device", manager.config.Device).
-		Str("audio_codec", manager.config.AudioCodec).
-		Str("audio_pipeline_src", manager.audio.Src).
-		Str("video_pipeline_src", manager.video.Src).
-		Msgf("Pipelines starting...")
-
-	manager.video.Start()
-	manager.audio.Start()
-	manager.streaming = true
-}
-
-func (manager *CaptureManagerCtx) StopStream() {
-	manager.logger.Info().Msgf("Pipelines shutting down...")
-	manager.video.Stop()
-	manager.audio.Stop()
-	manager.streaming = false
-}
-
-func (manager *CaptureManagerCtx) Streaming() bool {
-	return manager.streaming
-}
-
-func (manager *CaptureManagerCtx) createPipelines() {
-	// handle maximum fps
-	rate := manager.desktop.GetScreenSize().Rate
-	if manager.config.MaxFPS != 0 && manager.config.MaxFPS < rate {
-		rate = manager.config.MaxFPS
-	}
-
-	var err error
-	manager.video, err = CreateAppPipeline(
-		manager.config.VideoCodec,
-		manager.config.Display,
-		manager.config.VideoParams,
-		rate,
-		manager.config.VideoBitrate,
-		manager.config.VideoHWEnc,
-	)
-	if err != nil {
-		manager.logger.Panic().Err(err).Msg("unable to create video pipeline")
-	}
-
-	manager.audio, err = CreateAppPipeline(
-		manager.config.AudioCodec,
-		manager.config.Device,
-		manager.config.AudioParams,
-		0, // fps: n/a for audio
-		manager.config.AudioBitrate,
-		"", // hwenc: n/a for audio
-	)
-	if err != nil {
-		manager.logger.Panic().Err(err).Msg("unable to create audio pipeline")
-	}
-}
-
-func (manager *CaptureManagerCtx) ChangeResolution(width int, height int, rate int16) error {
-	manager.video.Stop()
-	manager.broadcast.Stop()
-
-	defer func() {
-		manager.video.Start()
-		if err := manager.broadcast.Start(); err != nil {
-			manager.logger.Panic().Err(err).Msg("unable to create rtmp pipeline")
-		}
-
-		manager.logger.Info().Msg("starting video pipeline...")
-	}()
-
-	if err := manager.desktop.SetScreenSize(types.ScreenSize{
-		Width:  width,
-		Height: height,
-		Rate:   rate,
-	}); err != nil {
-		return err
-	}
-
-	// handle maximum fps
-	if manager.config.MaxFPS != 0 && manager.config.MaxFPS < rate {
-		rate = manager.config.MaxFPS
-	}
-
-	var err error
-	manager.video, err = CreateAppPipeline(
-		manager.config.VideoCodec,
-		manager.config.Display,
-		manager.config.VideoParams,
-		rate,
-		manager.config.VideoBitrate,
-		manager.config.VideoHWEnc,
-	)
-	if err != nil {
-		manager.logger.Panic().Err(err).Msg("unable to create new video pipeline")
-	}
 
 	return nil
 }
+
+func (manager *CaptureManagerCtx) Broadcast() types.BroadcastManager {
+	return manager.broadcast
+}
+
+func (manager *CaptureManagerCtx) Audio() types.StreamSinkManager {
+	return manager.audio
+}
+
+func (manager *CaptureManagerCtx) Video() types.StreamSinkManager {
+	return manager.video
+}

server/internal/capture/pipelines.go

@@ -2,8 +2,10 @@ package capture
 
 import (
 	"fmt"
-	"m1k1o/neko/internal/capture/gst"
 	"strings"
+
+	"m1k1o/neko/internal/capture/gst"
+	"m1k1o/neko/internal/types/codec"
 )
 
 /*
@@ -31,38 +33,36 @@ const (
 	audioSrc = "pulsesrc device=%s ! audio/x-raw,channels=2 ! audioconvert ! "
 )
 
-// CreateRTMPPipeline creates a GStreamer Pipeline
+func NewBroadcastPipeline(device string, display string, pipelineSrc string, url string) (*gst.Pipeline, error) {
-func CreateRTMPPipeline(pipelineDevice string, pipelineDisplay string, pipelineSrc string, pipelineRTMP string) (*gst.Pipeline, error) {
+	video := fmt.Sprintf(videoSrc, display, 25)
-	video := fmt.Sprintf(videoSrc, pipelineDisplay, 25)
+	audio := fmt.Sprintf(audioSrc, device)
-	audio := fmt.Sprintf(audioSrc, pipelineDevice)
 
 	var pipelineStr string
 	if pipelineSrc != "" {
 		// replace RTMP url
-		pipelineStr = strings.Replace(pipelineSrc, "{url}", pipelineRTMP, -1)
+		pipelineStr = strings.Replace(pipelineSrc, "{url}", url, -1)
 		// replace audio device
-		pipelineStr = strings.Replace(pipelineStr, "{device}", pipelineDevice, -1)
+		pipelineStr = strings.Replace(pipelineStr, "{device}", device, -1)
 		// replace display
-		pipelineStr = strings.Replace(pipelineStr, "{display}", pipelineDisplay, -1)
+		pipelineStr = strings.Replace(pipelineStr, "{display}", display, -1)
 	} else {
-		pipelineStr = fmt.Sprintf("flvmux name=mux ! rtmpsink location='%s live=1' %s audio/x-raw,channels=2 ! audioconvert ! voaacenc ! mux. %s x264enc bframes=0 key-int-max=60 byte-stream=true tune=zerolatency speed-preset=veryfast ! mux.", pipelineRTMP, audio, video)
+		pipelineStr = fmt.Sprintf("flvmux name=mux ! rtmpsink location='%s live=1' %s audio/x-raw,channels=2 ! audioconvert ! voaacenc ! mux. %s x264enc bframes=0 key-int-max=60 byte-stream=true tune=zerolatency speed-preset=veryfast ! mux.", url, audio, video)
 	}
 
 	return gst.CreatePipeline(pipelineStr)
 }
 
-// CreateAppPipeline creates a GStreamer Pipeline
+func NewVideoPipeline(rtpCodec codec.RTPCodec, display string, pipelineSrc string, fps int16, bitrate uint, hwenc string) (*gst.Pipeline, error) {
-func CreateAppPipeline(codecName string, pipelineDevice string, pipelineSrc string, fps int16, bitrate uint, hwenc string) (*gst.Pipeline, error) {
 	pipelineStr := " ! appsink name=appsink"
 
 	// if using custom pipeline
 	if pipelineSrc != "" {
-		pipelineStr = fmt.Sprintf(pipelineSrc+pipelineStr, pipelineDevice)
+		pipelineStr = fmt.Sprintf(pipelineSrc+pipelineStr, display)
 		return gst.CreatePipeline(pipelineStr)
 	}
 
-	switch codecName {
+	switch rtpCodec.Name {
-	case "VP8":
+	case codec.VP8().Name:
 		if hwenc == "VAAPI" {
 			if err := gst.CheckPlugins([]string{"ximagesrc", "vaapi"}); err != nil {
 				return nil, err
@@ -70,7 +70,7 @@ func CreateAppPipeline(codecName string, pipelineDevice string, pipelineSrc stri
 			// vp8 encode is missing from gstreamer.freedesktop.org/documentation
 			// note that it was removed from some recent intel CPUs: https://trac.ffmpeg.org/wiki/Hardware/QuickSync
 			// https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer-vaapi-plugins/html/gstreamer-vaapi-plugins-vaapivp8enc.html
-			pipelineStr = fmt.Sprintf(videoSrc+"video/x-raw,format=NV12 ! vaapivp8enc rate-control=vbr bitrate=%d keyframe-period=180"+pipelineStr, pipelineDevice, fps, bitrate)
+			pipelineStr = fmt.Sprintf(videoSrc+"video/x-raw,format=NV12 ! vaapivp8enc rate-control=vbr bitrate=%d keyframe-period=180"+pipelineStr, display, fps, bitrate)
 		} else {
 			// https://gstreamer.freedesktop.org/documentation/vpx/vp8enc.html?gi-language=c
 			// gstreamer1.0-plugins-good
@@ -80,7 +80,7 @@ func CreateAppPipeline(codecName string, pipelineDevice string, pipelineSrc stri
 			}
 
 			pipelineStr = strings.Join([]string{
-				fmt.Sprintf(videoSrc, pipelineDevice, fps),
+				fmt.Sprintf(videoSrc, display, fps),
 				"vp8enc",
 				fmt.Sprintf("target-bitrate=%d", bitrate*650),
 				"cpu-used=4",
@@ -97,7 +97,7 @@ func CreateAppPipeline(codecName string, pipelineDevice string, pipelineSrc stri
 				pipelineStr,
 			}, " ")
 		}
-	case "VP9":
+	case codec.VP9().Name:
 		// https://gstreamer.freedesktop.org/documentation/vpx/vp9enc.html?gi-language=c
 		// gstreamer1.0-plugins-good
 		// vp9enc
@@ -105,8 +105,8 @@ func CreateAppPipeline(codecName string, pipelineDevice string, pipelineSrc stri
 			return nil, err
 		}
 
-		pipelineStr = fmt.Sprintf(videoSrc+"vp9enc target-bitrate=%d cpu-used=-5 threads=4 deadline=1 keyframe-max-dist=30 auto-alt-ref=true"+pipelineStr, pipelineDevice, fps, bitrate*1000)
+		pipelineStr = fmt.Sprintf(videoSrc+"vp9enc target-bitrate=%d cpu-used=-5 threads=4 deadline=1 keyframe-max-dist=30 auto-alt-ref=true"+pipelineStr, display, fps, bitrate*1000)
-	case "H264":
+	case codec.H264().Name:
 		if err := gst.CheckPlugins([]string{"ximagesrc"}); err != nil {
 			return nil, err
 		}
@@ -116,14 +116,14 @@ func CreateAppPipeline(codecName string, pipelineDevice string, pipelineSrc stri
 				return nil, err
 			}
 
-			pipelineStr = fmt.Sprintf(videoSrc+"video/x-raw,format=NV12 ! vaapih264enc rate-control=vbr bitrate=%d keyframe-period=180 quality-level=7 ! video/x-h264,stream-format=byte-stream"+pipelineStr, pipelineDevice, fps, bitrate)
+			pipelineStr = fmt.Sprintf(videoSrc+"video/x-raw,format=NV12 ! vaapih264enc rate-control=vbr bitrate=%d keyframe-period=180 quality-level=7 ! video/x-h264,stream-format=byte-stream"+pipelineStr, display, fps, bitrate)
 
 		} else {
 			// https://gstreamer.freedesktop.org/documentation/openh264/openh264enc.html?gi-language=c#openh264enc
 			// gstreamer1.0-plugins-bad
 			// openh264enc multi-thread=4 complexity=high bitrate=3072000 max-bitrate=4096000
 			if err := gst.CheckPlugins([]string{"openh264"}); err == nil {
-				pipelineStr = fmt.Sprintf(videoSrc+"openh264enc multi-thread=4 complexity=high bitrate=%d max-bitrate=%d ! video/x-h264,stream-format=byte-stream"+pipelineStr, pipelineDevice, fps, bitrate*1000, (bitrate+1024)*1000)
+				pipelineStr = fmt.Sprintf(videoSrc+"openh264enc multi-thread=4 complexity=high bitrate=%d max-bitrate=%d ! video/x-h264,stream-format=byte-stream"+pipelineStr, display, fps, bitrate*1000, (bitrate+1024)*1000)
 				break
 			}
 
@@ -139,9 +139,26 @@ func CreateAppPipeline(codecName string, pipelineDevice string, pipelineSrc stri
 				vbvbuf = bitrate
 			}
 
-			pipelineStr = fmt.Sprintf(videoSrc+"video/x-raw,format=NV12 ! x264enc threads=4 bitrate=%d key-int-max=60 vbv-buf-capacity=%d byte-stream=true tune=zerolatency speed-preset=veryfast ! video/x-h264,stream-format=byte-stream"+pipelineStr, pipelineDevice, fps, bitrate, vbvbuf)
+			pipelineStr = fmt.Sprintf(videoSrc+"video/x-raw,format=NV12 ! x264enc threads=4 bitrate=%d key-int-max=60 vbv-buf-capacity=%d byte-stream=true tune=zerolatency speed-preset=veryfast ! video/x-h264,stream-format=byte-stream"+pipelineStr, display, fps, bitrate, vbvbuf)
 		}
-	case "Opus":
+	default:
+		return nil, fmt.Errorf("unknown codec %s", rtpCodec.Name)
+	}
+
+	return gst.CreatePipeline(pipelineStr)
+}
+
+func NewAudioPipeline(rtpCodec codec.RTPCodec, device string, pipelineSrc string, bitrate uint) (*gst.Pipeline, error) {
+	pipelineStr := " ! appsink name=appsink"
+
+	// if using custom pipeline
+	if pipelineSrc != "" {
+		pipelineStr = fmt.Sprintf(pipelineSrc+pipelineStr, device)
+		return gst.CreatePipeline(pipelineStr)
+	}
+
+	switch rtpCodec.Name {
+	case codec.Opus().Name:
 		// https://gstreamer.freedesktop.org/documentation/opus/opusenc.html
 		// gstreamer1.0-plugins-base
 		// opusenc
@@ -149,8 +166,8 @@ func CreateAppPipeline(codecName string, pipelineDevice string, pipelineSrc stri
 			return nil, err
 		}
 
-		pipelineStr = fmt.Sprintf(audioSrc+"opusenc inband-fec=true bitrate=%d"+pipelineStr, pipelineDevice, bitrate*1000)
+		pipelineStr = fmt.Sprintf(audioSrc+"opusenc inband-fec=true bitrate=%d"+pipelineStr, device, bitrate*1000)
-	case "G722":
+	case codec.G722().Name:
 		// https://gstreamer.freedesktop.org/documentation/libav/avenc_g722.html?gi-language=c
 		// gstreamer1.0-libav
 		// avenc_g722
@@ -158,8 +175,8 @@ func CreateAppPipeline(codecName string, pipelineDevice string, pipelineSrc stri
 			return nil, err
 		}
 
-		pipelineStr = fmt.Sprintf(audioSrc+"avenc_g722 bitrate=%d"+pipelineStr, pipelineDevice, bitrate*1000)
+		pipelineStr = fmt.Sprintf(audioSrc+"avenc_g722 bitrate=%d"+pipelineStr, device, bitrate*1000)
-	case "PCMU":
+	case codec.PCMU().Name:
 		// https://gstreamer.freedesktop.org/documentation/mulaw/mulawenc.html?gi-language=c
 		// gstreamer1.0-plugins-good
 		// audio/x-raw, rate=8000 ! mulawenc
@@ -167,8 +184,8 @@ func CreateAppPipeline(codecName string, pipelineDevice string, pipelineSrc stri
 			return nil, err
 		}
 
-		pipelineStr = fmt.Sprintf(audioSrc+"audio/x-raw, rate=8000 ! mulawenc"+pipelineStr, pipelineDevice)
+		pipelineStr = fmt.Sprintf(audioSrc+"audio/x-raw, rate=8000 ! mulawenc"+pipelineStr, device)
-	case "PCMA":
+	case codec.PCMA().Name:
 		// https://gstreamer.freedesktop.org/documentation/alaw/alawenc.html?gi-language=c
 		// gstreamer1.0-plugins-good
 		// audio/x-raw, rate=8000 ! alawenc
@@ -176,9 +193,9 @@ func CreateAppPipeline(codecName string, pipelineDevice string, pipelineSrc stri
 			return nil, err
 		}
 
-		pipelineStr = fmt.Sprintf(audioSrc+"audio/x-raw, rate=8000 ! alawenc"+pipelineStr, pipelineDevice)
+		pipelineStr = fmt.Sprintf(audioSrc+"audio/x-raw, rate=8000 ! alawenc"+pipelineStr, device)
 	default:
-		return nil, fmt.Errorf("unknown codec %s", codecName)
+		return nil, fmt.Errorf("unknown codec %s", rtpCodec.Name)
 	}
 
 	return gst.CreatePipeline(pipelineStr)

server/internal/capture/streamsink.go

@@ -0,0 +1,193 @@
+package capture
+
+import (
+	"errors"
+	"sync"
+
+	"github.com/rs/zerolog"
+	"github.com/rs/zerolog/log"
+
+	"m1k1o/neko/internal/capture/gst"
+	"m1k1o/neko/internal/types"
+	"m1k1o/neko/internal/types/codec"
+)
+
+var moveSinkListenerMu = sync.Mutex{}
+
+type StreamSinkManagerCtx struct {
+	logger zerolog.Logger
+	mu     sync.Mutex
+	wg     sync.WaitGroup
+
+	codec      codec.RTPCodec
+	pipeline   *gst.Pipeline
+	pipelineMu sync.Mutex
+	pipelineFn func() (*gst.Pipeline, error)
+
+	listeners   int
+	listenersMu sync.Mutex
+
+	sampleFn func(sample types.Sample)
+}
+
+func streamSinkNew(codec codec.RTPCodec, pipelineFn func() (*gst.Pipeline, error), video_id string) *StreamSinkManagerCtx {
+	logger := log.With().
+		Str("module", "capture").
+		Str("submodule", "stream-sink").
+		Str("video_id", video_id).Logger()
+
+	manager := &StreamSinkManagerCtx{
+		logger:     logger,
+		codec:      codec,
+		pipelineFn: pipelineFn,
+	}
+
+	return manager
+}
+
+func (manager *StreamSinkManagerCtx) shutdown() {
+	manager.logger.Info().Msgf("shutdown")
+
+	manager.destroyPipeline()
+	manager.wg.Wait()
+}
+
+func (manager *StreamSinkManagerCtx) OnSample(listener func(sample types.Sample)) {
+	manager.sampleFn = listener
+}
+
+func (manager *StreamSinkManagerCtx) Codec() codec.RTPCodec {
+	return manager.codec
+}
+
+func (manager *StreamSinkManagerCtx) start() error {
+	if manager.listeners == 0 {
+		err := manager.createPipeline()
+		if err != nil && !errors.Is(err, types.ErrCapturePipelineAlreadyExists) {
+			return err
+		}
+
+		manager.logger.Info().Msgf("first listener, starting")
+	}
+
+	return nil
+}
+
+func (manager *StreamSinkManagerCtx) stop() {
+	if manager.listeners == 0 {
+		manager.destroyPipeline()
+		manager.logger.Info().Msgf("last listener, stopping")
+	}
+}
+
+func (manager *StreamSinkManagerCtx) addListener() {
+	manager.listenersMu.Lock()
+	manager.listeners++
+	manager.listenersMu.Unlock()
+}
+
+func (manager *StreamSinkManagerCtx) removeListener() {
+	manager.listenersMu.Lock()
+	manager.listeners--
+	manager.listenersMu.Unlock()
+}
+
+func (manager *StreamSinkManagerCtx) AddListener() error {
+	manager.mu.Lock()
+	defer manager.mu.Unlock()
+
+	// start if stopped
+	if err := manager.start(); err != nil {
+		return err
+	}
+
+	// add listener
+	manager.addListener()
+
+	return nil
+}
+
+func (manager *StreamSinkManagerCtx) RemoveListener() error {
+	manager.mu.Lock()
+	defer manager.mu.Unlock()
+
+	// remove listener
+	manager.removeListener()
+
+	// stop if started
+	manager.stop()
+
+	return nil
+}
+
+func (manager *StreamSinkManagerCtx) ListenersCount() int {
+	manager.listenersMu.Lock()
+	defer manager.listenersMu.Unlock()
+
+	return manager.listeners
+}
+
+func (manager *StreamSinkManagerCtx) Started() bool {
+	return manager.ListenersCount() > 0
+}
+
+func (manager *StreamSinkManagerCtx) createPipeline() error {
+	manager.pipelineMu.Lock()
+	defer manager.pipelineMu.Unlock()
+
+	if manager.pipeline != nil {
+		return types.ErrCapturePipelineAlreadyExists
+	}
+
+	var err error
+
+	manager.logger.Info().
+		Str("codec", manager.codec.Name).
+		Msgf("creating pipeline")
+
+	manager.pipeline, err = manager.pipelineFn()
+	if err != nil {
+		return err
+	}
+
+	manager.logger.Info().
+		Str("codec", manager.codec.Name).
+		Str("src", manager.pipeline.Src).
+		Msgf("created pipeline")
+
+	manager.pipeline.AttachAppsink("appsink")
+	manager.pipeline.Play()
+
+	manager.wg.Add(1)
+	pipeline := manager.pipeline
+
+	go func() {
+		manager.logger.Debug().Msg("started emitting samples")
+		defer manager.wg.Done()
+
+		for {
+			sample, ok := <-pipeline.Sample
+			if !ok {
+				manager.logger.Debug().Msg("stopped emitting samples")
+				return
+			}
+
+			manager.sampleFn(sample)
+		}
+	}()
+
+	return nil
+}
+
+func (manager *StreamSinkManagerCtx) destroyPipeline() {
+	manager.pipelineMu.Lock()
+	defer manager.pipelineMu.Unlock()
+
+	if manager.pipeline == nil {
+		return
+	}
+
+	manager.pipeline.Destroy()
+	manager.logger.Info().Msgf("destroying pipeline")
+	manager.pipeline = nil
+}

server/internal/config/broadcast.go

@@ -1,32 +0,0 @@
-package config
-
-import (
-	"github.com/spf13/cobra"
-	"github.com/spf13/viper"
-)
-
-type Broadcast struct {
-	Pipeline string
-	URL      string
-	Enabled  bool
-}
-
-func (Broadcast) Init(cmd *cobra.Command) error {
-	cmd.PersistentFlags().String("broadcast_pipeline", "", "custom gst pipeline used for broadcasting, strings {url} {device} {display} will be replaced")
-	if err := viper.BindPFlag("broadcast_pipeline", cmd.PersistentFlags().Lookup("broadcast_pipeline")); err != nil {
-		return err
-	}
-
-	cmd.PersistentFlags().String("broadcast_url", "", "URL for broadcasting, setting this value will automatically enable broadcasting")
-	if err := viper.BindPFlag("broadcast_url", cmd.PersistentFlags().Lookup("broadcast_url")); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func (s *Broadcast) Set() {
-	s.Pipeline = viper.GetString("broadcast_pipeline")
-	s.URL = viper.GetString("broadcast_url")
-	s.Enabled = s.URL != ""
-}

server/internal/config/capture.go

@@ -1,66 +1,45 @@
 package config
 
 import (
+	"m1k1o/neko/internal/types/codec"
+
 	"github.com/spf13/cobra"
 	"github.com/spf13/viper"
 )
 
 type Capture struct {
-	Display      string
+	// video
-	Device       string
+	Display       string
-	AudioCodec   string
+	VideoCodec    codec.RTPCodec
-	AudioParams  string
+	VideoHWEnc    string // TODO: Pipeline builder.
-	AudioBitrate uint
+	VideoBitrate  uint   // TODO: Pipeline builder.
-	VideoHWEnc   string
+	VideoMaxFPS   int16  // TODO: Pipeline builder.
-	VideoCodec   string
+	VideoPipeline string
-	VideoParams  string
+
-	VideoBitrate uint
+	// audio
-	MaxFPS       int16
+	AudioDevice   string
+	AudioCodec    codec.RTPCodec
+	AudioBitrate  uint // TODO: Pipeline builder.
+	AudioPipeline string
+
+	// broadcast
+	BroadcastPipeline string
+	BroadcastUrl      string
+	BroadcastStarted  bool
 }
 
 func (Capture) Init(cmd *cobra.Command) error {
+	//
+	// video
+	//
+
 	cmd.PersistentFlags().String("display", ":99.0", "XDisplay to capture")
 	if err := viper.BindPFlag("display", cmd.PersistentFlags().Lookup("display")); err != nil {
 		return err
 	}
 
-	cmd.PersistentFlags().String("device", "auto_null.monitor", "audio device to capture")
-	if err := viper.BindPFlag("device", cmd.PersistentFlags().Lookup("device")); err != nil {
-		return err
-	}
-
-	cmd.PersistentFlags().String("audio", "", "audio codec parameters to use for streaming")
-	if err := viper.BindPFlag("audio", cmd.PersistentFlags().Lookup("audio")); err != nil {
-		return err
-	}
-
-	cmd.PersistentFlags().Int("audio_bitrate", 128, "audio bitrate in kbit/s")
-	if err := viper.BindPFlag("audio_bitrate", cmd.PersistentFlags().Lookup("audio_bitrate")); err != nil {
-		return err
-	}
-
-	cmd.PersistentFlags().String("video", "", "video codec parameters to use for streaming")
-	if err := viper.BindPFlag("video", cmd.PersistentFlags().Lookup("video")); err != nil {
-		return err
-	}
-
-	cmd.PersistentFlags().Int("video_bitrate", 3072, "video bitrate in kbit/s")
-	if err := viper.BindPFlag("video_bitrate", cmd.PersistentFlags().Lookup("video_bitrate")); err != nil {
-		return err
-	}
-
-	cmd.PersistentFlags().Int("max_fps", 25, "maximum fps delivered via WebRTC, 0 is for no maximum")
-	if err := viper.BindPFlag("max_fps", cmd.PersistentFlags().Lookup("max_fps")); err != nil {
-		return err
-	}
-
-	// hw encoding
-	cmd.PersistentFlags().String("hwenc", "", "use hardware accelerated encoding")
-	if err := viper.BindPFlag("hwenc", cmd.PersistentFlags().Lookup("hwenc")); err != nil {
-		return err
-	}
-
 	// video codecs
+	// TODO: video.codec
 	cmd.PersistentFlags().Bool("vp8", false, "use VP8 video codec")
 	if err := viper.BindPFlag("vp8", cmd.PersistentFlags().Lookup("vp8")); err != nil {
 		return err
@@ -75,8 +54,39 @@ func (Capture) Init(cmd *cobra.Command) error {
 	if err := viper.BindPFlag("h264", cmd.PersistentFlags().Lookup("h264")); err != nil {
 		return err
 	}
+	// video codecs
+
+	cmd.PersistentFlags().String("hwenc", "", "use hardware accelerated encoding")
+	if err := viper.BindPFlag("hwenc", cmd.PersistentFlags().Lookup("hwenc")); err != nil {
+		return err
+	}
+
+	cmd.PersistentFlags().Int("video_bitrate", 3072, "video bitrate in kbit/s")
+	if err := viper.BindPFlag("video_bitrate", cmd.PersistentFlags().Lookup("video_bitrate")); err != nil {
+		return err
+	}
+
+	cmd.PersistentFlags().Int("max_fps", 25, "maximum fps delivered via WebRTC, 0 is for no maximum")
+	if err := viper.BindPFlag("max_fps", cmd.PersistentFlags().Lookup("max_fps")); err != nil {
+		return err
+	}
+
+	cmd.PersistentFlags().String("video", "", "video codec parameters to use for streaming")
+	if err := viper.BindPFlag("video", cmd.PersistentFlags().Lookup("video")); err != nil {
+		return err
+	}
+
+	//
+	// audio
+	//
+
+	cmd.PersistentFlags().String("device", "auto_null.monitor", "audio device to capture")
+	if err := viper.BindPFlag("device", cmd.PersistentFlags().Lookup("device")); err != nil {
+		return err
+	}
 
 	// audio codecs
+	// TODO: audio.codec
 	cmd.PersistentFlags().Bool("opus", false, "use Opus audio codec")
 	if err := viper.BindPFlag("opus", cmd.PersistentFlags().Lookup("opus")); err != nil {
 		return err
@@ -96,44 +106,88 @@ func (Capture) Init(cmd *cobra.Command) error {
 	if err := viper.BindPFlag("pcma", cmd.PersistentFlags().Lookup("pcma")); err != nil {
 		return err
 	}
+	// audio codecs
+
+	cmd.PersistentFlags().Int("audio_bitrate", 128, "audio bitrate in kbit/s")
+	if err := viper.BindPFlag("audio_bitrate", cmd.PersistentFlags().Lookup("audio_bitrate")); err != nil {
+		return err
+	}
+
+	cmd.PersistentFlags().String("audio", "", "audio codec parameters to use for streaming")
+	if err := viper.BindPFlag("audio", cmd.PersistentFlags().Lookup("audio")); err != nil {
+		return err
+	}
+
+	//
+	// broadcast
+	//
+
+	cmd.PersistentFlags().String("broadcast_pipeline", "", "custom gst pipeline used for broadcasting, strings {url} {device} {display} will be replaced")
+	if err := viper.BindPFlag("broadcast_pipeline", cmd.PersistentFlags().Lookup("broadcast_pipeline")); err != nil {
+		return err
+	}
+
+	cmd.PersistentFlags().String("broadcast_url", "", "URL for broadcasting, setting this value will automatically enable broadcasting")
+	if err := viper.BindPFlag("broadcast_url", cmd.PersistentFlags().Lookup("broadcast_url")); err != nil {
+		return err
+	}
 
 	return nil
 }
 
 func (s *Capture) Set() {
-	audioCodec := "Opus"
+	//
-	if viper.GetBool("opus") {
+	// video
-		audioCodec = "Opus"
+	//
-	} else if viper.GetBool("g722") {
-		audioCodec = "G722"
-	} else if viper.GetBool("pcmu") {
-		audioCodec = "PCMU"
-	} else if viper.GetBool("pcma") {
-		audioCodec = "PCMA"
-	}
 
-	s.Device = viper.GetString("device")
+	s.Display = viper.GetString("display")
-	s.AudioCodec = audioCodec
-	s.AudioParams = viper.GetString("audio")
-	s.AudioBitrate = viper.GetUint("audio_bitrate")
 
-	videoCodec := "VP8"
+	videoCodec := codec.VP8()
 	if viper.GetBool("vp8") {
-		videoCodec = "VP8"
+		videoCodec = codec.VP8()
 	} else if viper.GetBool("vp9") {
-		videoCodec = "VP9"
+		videoCodec = codec.VP9()
 	} else if viper.GetBool("h264") {
-		videoCodec = "H264"
+		videoCodec = codec.H264()
 	}
+	s.VideoCodec = videoCodec
+
 	videoHWEnc := ""
 	if viper.GetString("hwenc") == "VAAPI" {
 		videoHWEnc = "VAAPI"
 	}
-	s.Display = viper.GetString("display")
 	s.VideoHWEnc = videoHWEnc
-	s.VideoCodec = videoCodec
-	s.VideoParams = viper.GetString("video")
-	s.VideoBitrate = viper.GetUint("video_bitrate")
 
-	s.MaxFPS = int16(viper.GetInt("max_fps"))
+	s.VideoBitrate = viper.GetUint("video_bitrate")
+	s.VideoMaxFPS = int16(viper.GetInt("max_fps"))
+	s.VideoPipeline = viper.GetString("video")
+
+	//
+	// audio
+	//
+
+	s.AudioDevice = viper.GetString("device")
+
+	audioCodec := codec.Opus()
+	if viper.GetBool("opus") {
+		audioCodec = codec.Opus()
+	} else if viper.GetBool("g722") {
+		audioCodec = codec.G722()
+	} else if viper.GetBool("pcmu") {
+		audioCodec = codec.PCMU()
+	} else if viper.GetBool("pcma") {
+		audioCodec = codec.PCMA()
+	}
+	s.AudioCodec = audioCodec
+
+	s.AudioBitrate = viper.GetUint("audio_bitrate")
+	s.AudioPipeline = viper.GetString("audio")
+
+	//
+	// broadcast
+	//
+
+	s.BroadcastPipeline = viper.GetString("broadcast_pipeline")
+	s.BroadcastUrl = viper.GetString("broadcast_url")
+	s.BroadcastStarted = s.BroadcastUrl != ""
 }

server/internal/desktop/manager.go

@@ -8,7 +8,6 @@ import (
 	"m1k1o/neko/internal/config"
 	"m1k1o/neko/internal/desktop/xevent"
 	"m1k1o/neko/internal/desktop/xorg"
-	"m1k1o/neko/internal/types"
 
 	"github.com/kataras/go-events"
 	"github.com/rs/zerolog"
@@ -25,7 +24,7 @@ type DesktopManagerCtx struct {
 	config   *config.Desktop
 }
 
-func New(config *config.Desktop, broadcast types.BroadcastManager) *DesktopManagerCtx {
+func New(config *config.Desktop) *DesktopManagerCtx {
 	return &DesktopManagerCtx{
 		logger:   log.With().Str("module", "desktop").Logger(),
 		shutdown: make(chan struct{}),

server/internal/session/manager.go

@@ -45,9 +45,8 @@ func (manager *SessionManager) New(id string, admin bool, socket types.WebSocket
 
 	manager.mu.Lock()
 	manager.members[id] = session
-	if !manager.capture.Streaming() && len(manager.members) > 0 {
+	manager.capture.Audio().AddListener()
-		manager.capture.StartStream()
+	manager.capture.Video().AddListener()
-	}
 	manager.mu.Unlock()
 
 	manager.emmiter.Emit("created", id, session)
@@ -160,9 +159,8 @@ func (manager *SessionManager) Destroy(id string) {
 		err := session.destroy()
 		delete(manager.members, id)
 
-		if manager.capture.Streaming() && len(manager.members) <= 0 {
+		manager.capture.Audio().RemoveListener()
-			manager.capture.StopStream()
+		manager.capture.Video().RemoveListener()
-		}
 		manager.mu.Unlock()
 
 		manager.emmiter.Emit("destroyed", id, session)

server/internal/types/broadcast.go

@@ -1,11 +0,0 @@
-package types
-
-type BroadcastManager interface {
-	Shutdown() error
-	Start() error
-	Stop()
-	IsActive() bool
-	Create(url string) error
-	Destroy()
-	GetUrl() string
-}

server/internal/types/capture.go

@@ -1,14 +1,38 @@
 package types
 
+import (
+	"errors"
+
+	"m1k1o/neko/internal/types/codec"
+)
+
+var (
+	ErrCapturePipelineAlreadyExists = errors.New("capture pipeline already exists")
+)
+
+type BroadcastManager interface {
+	Start(url string) error
+	Stop()
+	Started() bool
+	Url() string
+}
+
+type StreamSinkManager interface {
+	Codec() codec.RTPCodec
+	OnSample(listener func(sample Sample))
+
+	AddListener() error
+	RemoveListener() error
+
+	ListenersCount() int
+	Started() bool
+}
+
 type CaptureManager interface {
-	VideoCodec() string
-	AudioCodec() string
 	Start()
 	Shutdown() error
-	OnVideoFrame(listener func(sample Sample))
+
-	OnAudioFrame(listener func(sample Sample))
+	Broadcast() BroadcastManager
-	StartStream()
+	Audio() StreamSinkManager
-	StopStream()
+	Video() StreamSinkManager
-	Streaming() bool
-	ChangeResolution(width int, height int, rate int16) error
 }

server/internal/types/codec/codecs.go

@@ -0,0 +1,170 @@
+package codec
+
+import (
+	"strings"
+
+	"github.com/pion/webrtc/v3"
+)
+
+var RTCPFeedback = []webrtc.RTCPFeedback{
+	{Type: webrtc.TypeRTCPFBTransportCC, Parameter: ""},
+	{Type: webrtc.TypeRTCPFBGoogREMB, Parameter: ""},
+
+	// https://www.iana.org/assignments/sdp-parameters/sdp-parameters.xhtml#sdp-parameters-19
+	{Type: webrtc.TypeRTCPFBCCM, Parameter: "fir"},
+
+	// https://www.iana.org/assignments/sdp-parameters/sdp-parameters.xhtml#sdp-parameters-15
+	{Type: webrtc.TypeRTCPFBNACK, Parameter: "pli"},
+	{Type: webrtc.TypeRTCPFBNACK, Parameter: ""},
+}
+
+func ParseRTC(codec webrtc.RTPCodecParameters) (RTPCodec, bool) {
+	codecName := strings.Split(codec.RTPCodecCapability.MimeType, "/")[1]
+	return ParseStr(codecName)
+}
+
+func ParseStr(codecName string) (codec RTPCodec, ok bool) {
+	ok = true
+
+	switch strings.ToLower(codecName) {
+	case VP8().Name:
+		codec = VP8()
+	case VP9().Name:
+		codec = VP9()
+	case H264().Name:
+		codec = H264()
+	case Opus().Name:
+		codec = Opus()
+	case G722().Name:
+		codec = G722()
+	case PCMU().Name:
+		codec = PCMU()
+	case PCMA().Name:
+		codec = PCMA()
+	default:
+		ok = false
+	}
+
+	return
+}
+
+type RTPCodec struct {
+	Name        string
+	PayloadType webrtc.PayloadType
+	Type        webrtc.RTPCodecType
+	Capability  webrtc.RTPCodecCapability
+}
+
+func (codec *RTPCodec) Register(engine *webrtc.MediaEngine) error {
+	return engine.RegisterCodec(webrtc.RTPCodecParameters{
+		RTPCodecCapability: codec.Capability,
+		PayloadType:        codec.PayloadType,
+	}, codec.Type)
+}
+
+func VP8() RTPCodec {
+	return RTPCodec{
+		Name:        "vp8",
+		PayloadType: 96,
+		Type:        webrtc.RTPCodecTypeVideo,
+		Capability: webrtc.RTPCodecCapability{
+			MimeType:     webrtc.MimeTypeVP8,
+			ClockRate:    90000,
+			Channels:     0,
+			SDPFmtpLine:  "",
+			RTCPFeedback: RTCPFeedback,
+		},
+	}
+}
+
+// TODO: Profile ID.
+func VP9() RTPCodec {
+	return RTPCodec{
+		Name:        "vp9",
+		PayloadType: 98,
+		Type:        webrtc.RTPCodecTypeVideo,
+		Capability: webrtc.RTPCodecCapability{
+			MimeType:     webrtc.MimeTypeVP9,
+			ClockRate:    90000,
+			Channels:     0,
+			SDPFmtpLine:  "profile-id=0",
+			RTCPFeedback: RTCPFeedback,
+		},
+	}
+}
+
+// TODO: Profile ID.
+func H264() RTPCodec {
+	return RTPCodec{
+		Name:        "h264",
+		PayloadType: 102,
+		Type:        webrtc.RTPCodecTypeVideo,
+		Capability: webrtc.RTPCodecCapability{
+			MimeType:     webrtc.MimeTypeH264,
+			ClockRate:    90000,
+			Channels:     0,
+			SDPFmtpLine:  "level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42e01f",
+			RTCPFeedback: RTCPFeedback,
+		},
+	}
+}
+
+func Opus() RTPCodec {
+	return RTPCodec{
+		Name:        "opus",
+		PayloadType: 111,
+		Type:        webrtc.RTPCodecTypeAudio,
+		Capability: webrtc.RTPCodecCapability{
+			MimeType:     webrtc.MimeTypeOpus,
+			ClockRate:    48000,
+			Channels:     2,
+			SDPFmtpLine:  "useinbandfec=1",
+			RTCPFeedback: []webrtc.RTCPFeedback{},
+		},
+	}
+}
+
+func G722() RTPCodec {
+	return RTPCodec{
+		Name:        "g722",
+		PayloadType: 9,
+		Type:        webrtc.RTPCodecTypeAudio,
+		Capability: webrtc.RTPCodecCapability{
+			MimeType:     webrtc.MimeTypeG722,
+			ClockRate:    8000,
+			Channels:     0,
+			SDPFmtpLine:  "",
+			RTCPFeedback: []webrtc.RTCPFeedback{},
+		},
+	}
+}
+
+func PCMU() RTPCodec {
+	return RTPCodec{
+		Name:        "pcmu",
+		PayloadType: 0,
+		Type:        webrtc.RTPCodecTypeAudio,
+		Capability: webrtc.RTPCodecCapability{
+			MimeType:     webrtc.MimeTypePCMU,
+			ClockRate:    8000,
+			Channels:     0,
+			SDPFmtpLine:  "",
+			RTCPFeedback: []webrtc.RTCPFeedback{},
+		},
+	}
+}
+
+func PCMA() RTPCodec {
+	return RTPCodec{
+		Name:        "pcma",
+		PayloadType: 8,
+		Type:        webrtc.RTPCodecTypeAudio,
+		Capability: webrtc.RTPCodecCapability{
+			MimeType:     webrtc.MimeTypePCMA,
+			ClockRate:    8000,
+			Channels:     0,
+			SDPFmtpLine:  "",
+			RTCPFeedback: []webrtc.RTCPFeedback{},
+		},
+	}
+}

server/internal/webrtc/webrtc.go

@@ -2,6 +2,7 @@ package webrtc
 
 import (
 	"encoding/json"
+	"errors"
 	"fmt"
 	"io"
 	"net"
@@ -33,8 +34,6 @@ type WebRTCManager struct {
 	logger     zerolog.Logger
 	videoTrack *webrtc.TrackLocalStaticSample
 	audioTrack *webrtc.TrackLocalStaticSample
-	videoCodec webrtc.RTPCodecParameters
-	audioCodec webrtc.RTPCodecParameters
 	sessions   types.SessionManager
 	capture    types.CaptureManager
 	desktop    types.DesktopManager
@@ -44,28 +43,45 @@ type WebRTCManager struct {
 
 func (manager *WebRTCManager) Start() {
 	var err error
-	manager.audioTrack, manager.audioCodec, err = manager.createTrack(manager.capture.AudioCodec())
+
+	//
+	// audio
+	//
+
+	audioCodec := manager.capture.Audio().Codec()
+	manager.audioTrack, err = webrtc.NewTrackLocalStaticSample(audioCodec.Capability, "audio", "stream")
 	if err != nil {
 		manager.logger.Panic().Err(err).Msg("unable to create audio track")
 	}
 
-	manager.capture.OnAudioFrame(func(sample types.Sample) {
+	manager.capture.Audio().OnSample(func(sample types.Sample) {
-		if err := manager.audioTrack.WriteSample(media.Sample(sample)); err != nil && err != io.ErrClosedPipe {
+		err := manager.audioTrack.WriteSample(media.Sample(sample))
+		if err != nil && errors.Is(err, io.ErrClosedPipe) {
 			manager.logger.Warn().Err(err).Msg("audio pipeline failed to write")
 		}
 	})
 
-	manager.videoTrack, manager.videoCodec, err = manager.createTrack(manager.capture.VideoCodec())
+	//
+	// video
+	//
+
+	videoCodec := manager.capture.Video().Codec()
+	manager.videoTrack, err = webrtc.NewTrackLocalStaticSample(videoCodec.Capability, "video", "stream")
 	if err != nil {
 		manager.logger.Panic().Err(err).Msg("unable to create video track")
 	}
 
-	manager.capture.OnVideoFrame(func(sample types.Sample) {
+	manager.capture.Video().OnSample(func(sample types.Sample) {
-		if err := manager.videoTrack.WriteSample(media.Sample(sample)); err != nil && err != io.ErrClosedPipe {
+		err := manager.videoTrack.WriteSample(media.Sample(sample))
+		if err != nil && errors.Is(err, io.ErrClosedPipe) {
 			manager.logger.Warn().Err(err).Msg("video pipeline failed to write")
 		}
 	})
 
+	//
+	// api
+	//
+
 	if err := manager.initAPI(); err != nil {
 		manager.logger.Panic().Err(err).Msg("failed to initialize webrtc API")
 	}
@@ -141,8 +157,18 @@ func (manager *WebRTCManager) initAPI() error {
 
 	// Create MediaEngine with selected codecs
 	engine := webrtc.MediaEngine{}
-	_ = engine.RegisterCodec(manager.audioCodec, webrtc.RTPCodecTypeAudio)
+
-	_ = engine.RegisterCodec(manager.videoCodec, webrtc.RTPCodecTypeVideo)
+	audioCodec := manager.capture.Audio().Codec()
+	_ = engine.RegisterCodec(webrtc.RTPCodecParameters{
+		RTPCodecCapability: audioCodec.Capability,
+		PayloadType:        audioCodec.PayloadType,
+	}, audioCodec.Type)
+
+	videoCodec := manager.capture.Video().Codec()
+	_ = engine.RegisterCodec(webrtc.RTPCodecParameters{
+		RTPCodecCapability: videoCodec.Capability,
+		PayloadType:        videoCodec.PayloadType,
+	}, videoCodec.Type)
 
 	// Register Interceptors
 	i := &interceptor.Registry{}
@@ -305,43 +331,3 @@ func (manager *WebRTCManager) ICEServers() []webrtc.ICEServer {
 func (manager *WebRTCManager) ImplicitControl() bool {
 	return manager.config.ImplicitControl
 }
-
-func (manager *WebRTCManager) createTrack(codecName string) (*webrtc.TrackLocalStaticSample, webrtc.RTPCodecParameters, error) {
-	var codec webrtc.RTPCodecParameters
-
-	id := ""
-	fb := []webrtc.RTCPFeedback{}
-
-	switch codecName {
-	case "VP8":
-		codec = webrtc.RTPCodecParameters{RTPCodecCapability: webrtc.RTPCodecCapability{MimeType: webrtc.MimeTypeVP8, ClockRate: 90000, Channels: 0, SDPFmtpLine: "", RTCPFeedback: fb}, PayloadType: 96}
-		id = "video"
-	case "VP9":
-		codec = webrtc.RTPCodecParameters{RTPCodecCapability: webrtc.RTPCodecCapability{MimeType: webrtc.MimeTypeVP9, ClockRate: 90000, Channels: 0, SDPFmtpLine: "", RTCPFeedback: fb}, PayloadType: 98}
-		id = "video"
-	case "H264":
-		codec = webrtc.RTPCodecParameters{RTPCodecCapability: webrtc.RTPCodecCapability{MimeType: webrtc.MimeTypeH264, ClockRate: 90000, Channels: 0, SDPFmtpLine: "level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42e01f", RTCPFeedback: fb}, PayloadType: 102}
-		id = "video"
-	case "Opus":
-		codec = webrtc.RTPCodecParameters{RTPCodecCapability: webrtc.RTPCodecCapability{MimeType: webrtc.MimeTypeOpus, ClockRate: 48000, Channels: 2, SDPFmtpLine: "useinbandfec=1", RTCPFeedback: fb}, PayloadType: 111}
-		id = "audio"
-	case "G722":
-		codec = webrtc.RTPCodecParameters{RTPCodecCapability: webrtc.RTPCodecCapability{MimeType: webrtc.MimeTypeG722, ClockRate: 8000, Channels: 0, SDPFmtpLine: "", RTCPFeedback: fb}, PayloadType: 9}
-		id = "audio"
-	case "PCMU":
-		codec = webrtc.RTPCodecParameters{RTPCodecCapability: webrtc.RTPCodecCapability{MimeType: webrtc.MimeTypePCMU, ClockRate: 8000, Channels: 0, SDPFmtpLine: "", RTCPFeedback: fb}, PayloadType: 0}
-		id = "audio"
-	case "PCMA":
-		codec = webrtc.RTPCodecParameters{RTPCodecCapability: webrtc.RTPCodecCapability{MimeType: webrtc.MimeTypePCMA, ClockRate: 8000, Channels: 0, SDPFmtpLine: "", RTCPFeedback: fb}, PayloadType: 8}
-		id = "audio"
-	default:
-		return nil, codec, fmt.Errorf("unknown codec %s", codecName)
-	}
-
-	track, err := webrtc.NewTrackLocalStaticSample(codec.RTPCodecCapability, id, "stream")
-	if err != nil {
-		return nil, codec, err
-	}
-
-	return track, codec, nil
-}

server/internal/websocket/handler/broadcast.go

@@ -7,18 +7,37 @@ import (
 )
 
 func (h *MessageHandler) boradcastCreate(session types.Session, payload *message.BroadcastCreate) error {
+	broadcast := h.capture.Broadcast()
+
 	if !session.Admin() {
 		h.logger.Debug().Msg("user not admin")
 		return nil
 	}
 
-	pipelineErr := h.broadcast.Create(payload.URL)
+	if payload.URL == "" {
-	if pipelineErr != nil {
+		return session.Send(
+			message.SystemMessage{
+				Event:   event.SYSTEM_ERROR,
+				Title:   "Error while starting broadcast",
+				Message: "missing broadcast URL",
+			})
+	}
+
+	if broadcast.Started() {
+		return session.Send(
+			message.SystemMessage{
+				Event:   event.SYSTEM_ERROR,
+				Title:   "Error while starting broadcast",
+				Message: "server is already broadcasting",
+			})
+	}
+
+	if err := broadcast.Start(payload.URL); err != nil {
 		if err := session.Send(
 			message.SystemMessage{
 				Event:   event.SYSTEM_ERROR,
 				Title:   "Error while starting broadcast",
-				Message: pipelineErr.Error(),
+				Message: err.Error(),
 			}); err != nil {
 			h.logger.Warn().Err(err).Msgf("sending event %s has failed", event.SYSTEM_ERROR)
 			return err
@@ -33,12 +52,23 @@ func (h *MessageHandler) boradcastCreate(session types.Session, payload *message
 }
 
 func (h *MessageHandler) boradcastDestroy(session types.Session) error {
+	broadcast := h.capture.Broadcast()
+
 	if !session.Admin() {
 		h.logger.Debug().Msg("user not admin")
 		return nil
 	}
 
-	h.broadcast.Destroy()
+	if !broadcast.Started() {
+		return session.Send(
+			message.SystemMessage{
+				Event:   event.SYSTEM_ERROR,
+				Title:   "Error while stopping broadcast",
+				Message: "server is not broadcasting",
+			})
+	}
+
+	broadcast.Stop()
 
 	if err := h.boradcastStatus(nil); err != nil {
 		return err
@@ -48,14 +78,17 @@ func (h *MessageHandler) boradcastDestroy(session types.Session) error {
 }
 
 func (h *MessageHandler) boradcastStatus(session types.Session) error {
+	broadcast := h.capture.Broadcast()
+
+	msg := message.BroadcastStatus{
+		Event:    event.BORADCAST_STATUS,
+		IsActive: broadcast.Started(),
+		URL:      broadcast.Url(),
+	}
+
 	// if no session, broadcast change
 	if session == nil {
-		if err := h.sessions.AdminBroadcast(
+		if err := h.sessions.AdminBroadcast(msg, nil); err != nil {
-			message.BroadcastStatus{
-				Event:    event.BORADCAST_STATUS,
-				IsActive: h.broadcast.IsActive(),
-				URL:      h.broadcast.GetUrl(),
-			}, nil); err != nil {
 			h.logger.Warn().Err(err).Msgf("broadcasting event %s has failed", event.BORADCAST_STATUS)
 			return err
 		}
@@ -68,12 +101,7 @@ func (h *MessageHandler) boradcastStatus(session types.Session) error {
 		return nil
 	}
 
-	if err := session.Send(
+	if err := session.Send(msg); err != nil {
-		message.BroadcastStatus{
-			Event:    event.BORADCAST_STATUS,
-			IsActive: h.broadcast.IsActive(),
-			URL:      h.broadcast.GetUrl(),
-		}); err != nil {
 		h.logger.Warn().Err(err).Msgf("sending event %s has failed", event.BORADCAST_STATUS)
 		return err
 	}

server/internal/websocket/handler/handler.go

@@ -15,13 +15,12 @@ import (
 )
 
 type MessageHandler struct {
-	logger    zerolog.Logger
+	logger   zerolog.Logger
-	sessions  types.SessionManager
+	sessions types.SessionManager
-	desktop   types.DesktopManager
+	desktop  types.DesktopManager
-	capture   types.CaptureManager
+	capture  types.CaptureManager
-	webrtc    types.WebRTCManager
+	webrtc   types.WebRTCManager
-	broadcast types.BroadcastManager
+	state    *state.State
-	state     *state.State
 }
 
 func New(
@@ -29,17 +28,15 @@ func New(
 	desktop types.DesktopManager,
 	capture types.CaptureManager,
 	webrtc types.WebRTCManager,
-	broadcast types.BroadcastManager,
 	state *state.State,
 ) *MessageHandler {
 	return &MessageHandler{
-		logger:    log.With().Str("module", "websocket").Str("submodule", "handler").Logger(),
+		logger:   log.With().Str("module", "websocket").Str("submodule", "handler").Logger(),
-		sessions:  sessions,
+		sessions: sessions,
-		desktop:   desktop,
+		desktop:  desktop,
-		capture:   capture,
+		capture:  capture,
-		webrtc:    webrtc,
+		webrtc:   webrtc,
-		broadcast: broadcast,
+		state:    state,
-		state:     state,
 	}
 }
 

server/internal/websocket/handler/screen.go

@@ -12,7 +12,11 @@ func (h *MessageHandler) screenSet(id string, session types.Session, payload *me
 		return nil
 	}
 
-	if err := h.capture.ChangeResolution(payload.Width, payload.Height, payload.Rate); err != nil {
+	if err := h.desktop.SetScreenSize(types.ScreenSize{
+		Width:  payload.Width,
+		Height: payload.Height,
+		Rate:   payload.Rate,
+	}); err != nil {
 		h.logger.Warn().Err(err).Msgf("unable to change screen size")
 		return err
 	}

server/internal/websocket/websocket.go

@@ -22,7 +22,7 @@ import (
 
 const CONTROL_PROTECTION_SESSION = "by_control_protection"
 
-func New(sessions types.SessionManager, desktop types.DesktopManager, capture types.CaptureManager, broadcast types.BroadcastManager, webrtc types.WebRTCManager, conf *config.WebSocket) *WebSocketHandler {
+func New(sessions types.SessionManager, desktop types.DesktopManager, capture types.CaptureManager, webrtc types.WebRTCManager, conf *config.WebSocket) *WebSocketHandler {
 	logger := log.With().Str("module", "websocket").Logger()
 
 	state := state.New()
@@ -47,7 +47,6 @@ func New(sessions types.SessionManager, desktop types.DesktopManager, capture ty
 		desktop,
 		capture,
 		webrtc,
-		broadcast,
 		state,
 	)
 

server/neko.go

@@ -63,7 +63,6 @@ func init() {
 		Server:    &config.Server{},
 		Capture:   &config.Capture{},
 		Desktop:   &config.Desktop{},
-		Broadcast: &config.Broadcast{},
 		WebRTC:    &config.WebRTC{},
 		WebSocket: &config.WebSocket{},
 	}
@@ -103,7 +102,6 @@ type Neko struct {
 	Root      *config.Root
 	Capture   *config.Capture
 	Desktop   *config.Desktop
-	Broadcast *config.Broadcast
 	Server    *config.Server
 	WebRTC    *config.WebRTC
 	WebSocket *config.WebSocket
@@ -113,7 +111,6 @@ type Neko struct {
 	sessionManager   *session.SessionManager
 	captureManager   *capture.CaptureManagerCtx
 	desktopManager   *desktop.DesktopManagerCtx
-	broadcastManager *capture.BroadcastManager
 	webRTCManager    *webrtc.WebRTCManager
 	webSocketHandler *websocket.WebSocketHandler
 }
@@ -123,12 +120,10 @@ func (neko *Neko) Preflight() {
 }
 
 func (neko *Neko) Start() {
-	broadcastManager := capture.NewBroadcast(neko.Capture, neko.Broadcast)
+	desktopManager := desktop.New(neko.Desktop)
-
-	desktopManager := desktop.New(neko.Desktop, broadcastManager)
 	desktopManager.Start()
 
-	captureManager := capture.New(desktopManager, broadcastManager, neko.Capture)
+	captureManager := capture.New(desktopManager, neko.Capture)
 	captureManager.Start()
 
 	sessionManager := session.New(captureManager)
@@ -136,13 +131,12 @@ func (neko *Neko) Start() {
 	webRTCManager := webrtc.New(sessionManager, captureManager, desktopManager, neko.WebRTC)
 	webRTCManager.Start()
 
-	webSocketHandler := websocket.New(sessionManager, desktopManager, captureManager, broadcastManager, webRTCManager, neko.WebSocket)
+	webSocketHandler := websocket.New(sessionManager, desktopManager, captureManager, webRTCManager, neko.WebSocket)
 	webSocketHandler.Start()
 
 	server := http.New(neko.Server, webSocketHandler)
 	server.Start()
 
-	neko.broadcastManager = broadcastManager
 	neko.sessionManager = sessionManager
 	neko.captureManager = captureManager
 	neko.desktopManager = desktopManager
@@ -168,9 +162,6 @@ func (neko *Neko) Shutdown() {
 
 	err = neko.desktopManager.Shutdown()
 	neko.logger.Err(err).Msg("desktop manager shutdown")
-
-	err = neko.broadcastManager.Shutdown()
-	neko.logger.Err(err).Msg("broadcast manager shutdown")
 }
 
 func (neko *Neko) ServeCommand(cmd *cobra.Command, args []string) {