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keep appsrc / appsink in ctx.

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This commit is contained in:
Miroslav Šedivý
2021-12-05 22:06:42 +01:00
parent 8de5cb2f4a
commit 9a6eb942a4
5 changed files with 50 additions and 22 deletions
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40
internal/capture/gst/gst.c
View File

@ -114,10 +114,13 @@ static GstFlowReturn gstreamer_send_new_sample_handler(GstElement *object, gpoin
}
void gstreamer_pipeline_attach_appsink(GstPipelineCtx *ctx, char *sinkName) {
GstElement *appsink = gst_bin_get_by_name(GST_BIN(ctx->pipeline), sinkName);
g_object_set(appsink, "emit-signals", TRUE, NULL);
g_signal_connect(appsink, "new-sample", G_CALLBACK(gstreamer_send_new_sample_handler), ctx);
gst_object_unref(appsink);
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_pipeline_attach_appsrc(GstPipelineCtx *ctx, char *srcName) {
ctx->appsrc = gst_bin_get_by_name(GST_BIN(ctx->pipeline), srcName);
}
void gstreamer_pipeline_play(GstPipelineCtx *ctx) {
@ -129,17 +132,34 @@ void gstreamer_pipeline_pause(GstPipelineCtx *ctx) {
}
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, char *srcName, void *buffer, int bufferLen) {
GstElement *src = gst_bin_get_by_name(GST_BIN(ctx->pipeline), srcName);
if (src != NULL) {
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(src), buffer);
gst_object_unref(src);
gst_app_src_push_buffer(GST_APP_SRC(ctx->appsrc), buffer);
}
}

14
internal/capture/gst/gst.go
View File

@ -73,6 +73,13 @@ func (p *Pipeline) AttachAppsink(sinkName string) {
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)
}
func (p *Pipeline) Play() {
C.gstreamer_pipeline_play(p.Ctx)
}
@ -93,14 +100,11 @@ func (p *Pipeline) Destroy() {
p = nil
}
func (p *Pipeline) Push(srcName string, buffer []byte) {
srcNameUnsafe := C.CString(srcName)
defer C.free(unsafe.Pointer(srcNameUnsafe))
func (p *Pipeline) Push(buffer []byte) {
bytes := C.CBytes(buffer)
defer C.free(bytes)
C.gstreamer_pipeline_push(p.Ctx, srcNameUnsafe, bytes, C.int(len(buffer)))
C.gstreamer_pipeline_push(p.Ctx, bytes, C.int(len(buffer)))
}
// gst-inspect-1.0

5
internal/capture/gst/gst.h
View File

@ -7,6 +7,8 @@
typedef struct GstPipelineCtx {
int pipelineId;
GstElement *pipeline;
GstElement *appsink;
GstElement *appsrc;
} GstPipelineCtx;
extern void goHandlePipelineBuffer(void *buffer, int bufferLen, int samples, int pipelineId);
@ -14,10 +16,11 @@ extern void goPipelineLog(char *level, char *msg, int pipelineId);
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, char *srcName, void *buffer, int bufferLen);
void gstreamer_pipeline_push(GstPipelineCtx *ctx, void *buffer, int bufferLen);
void gstreamer_init(void);
void gstreamer_loop(void);