From 1d5310c38c93766b294afdd380e6fb05170aaad5 Mon Sep 17 00:00:00 2001
From: Sean DuBois <seaduboi@amazon.com>
Date: Fri, 20 Sep 2019 00:31:15 -0700
Subject: Initial commit

---
 gst/gst.c | 110 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 110 insertions(+)
 create mode 100644 gst/gst.c

(limited to 'gst/gst.c')

diff --git a/gst/gst.c b/gst/gst.c
new file mode 100644
index 0000000..e84316e
--- /dev/null
+++ b/gst/gst.c
@@ -0,0 +1,110 @@
+#include "gst.h"
+
+#include <gst/app/gstappsrc.h>
+
+typedef struct SampleHandlerUserData {
+  int pipelineId;
+} SampleHandlerUserData;
+
+GMainLoop *gstreamer_send_main_loop = NULL;
+void gstreamer_send_start_mainloop(void) {
+  gstreamer_send_main_loop = g_main_loop_new(NULL, FALSE);
+
+  g_main_loop_run(gstreamer_send_main_loop);
+}
+
+static gboolean gstreamer_send_bus_call(GstBus *bus, GstMessage *msg, gpointer data) {
+  GstElement *pipeline = GST_ELEMENT(data);
+
+  switch (GST_MESSAGE_TYPE(msg)) {
+  case GST_MESSAGE_EOS:
+    if (!gst_element_seek (pipeline, 1.0, GST_FORMAT_TIME, GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_KEY_UNIT | GST_SEEK_FLAG_SKIP,
+             GST_SEEK_TYPE_SET, 0,
+             GST_SEEK_TYPE_NONE, GST_CLOCK_TIME_NONE)) {
+        g_print ("EOS restart failed\n");
+        exit(1);
+    }
+    break;
+
+  case GST_MESSAGE_ERROR: {
+    gchar *debug;
+    GError *error;
+
+    gst_message_parse_error(msg, &error, &debug);
+    g_free(debug);
+
+    g_printerr("GStreamer Error: %s\n", error->message);
+    g_error_free(error);
+    exit(1);
+  }
+  default:
+    break;
+  }
+
+  return TRUE;
+}
+
+GstFlowReturn gstreamer_send_new_sample_handler(GstElement *object, gpointer user_data) {
+  GstSample *sample = NULL;
+  GstBuffer *buffer = NULL;
+  gpointer copy = NULL;
+  gsize copy_size = 0;
+  int *isVideo = (int *) user_data;
+
+  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), *isVideo);
+    }
+    gst_sample_unref (sample);
+  }
+
+  return GST_FLOW_OK;
+}
+
+GstElement *gstreamer_send_create_pipeline(char *pipeline) {
+  gst_init(NULL, NULL);
+  GError *error = NULL;
+  return gst_parse_launch(pipeline, &error);
+}
+
+void gstreamer_send_start_pipeline(GstElement *pipeline) {
+  GstBus *bus = gst_pipeline_get_bus(GST_PIPELINE(pipeline));
+  gst_bus_add_watch(bus, gstreamer_send_bus_call, pipeline);
+  gst_object_unref(bus);
+
+  GstElement *audio = gst_bin_get_by_name(GST_BIN(pipeline), "audio"),
+             *video = gst_bin_get_by_name(GST_BIN(pipeline), "video");
+
+  int *isAudio = malloc(sizeof(int)),
+      *isVideo = malloc(sizeof(int));
+
+  *isVideo = 1;
+  *isAudio = 0;
+
+  g_object_set(audio, "emit-signals", TRUE, NULL);
+  g_signal_connect(audio, "new-sample", G_CALLBACK(gstreamer_send_new_sample_handler), isAudio);
+
+  g_object_set(video, "emit-signals", TRUE, NULL);
+  g_signal_connect(video, "new-sample", G_CALLBACK(gstreamer_send_new_sample_handler), isVideo);
+
+  gstreamer_send_play_pipeline(pipeline);
+}
+
+void gstreamer_send_play_pipeline(GstElement *pipeline) {
+  gst_element_set_state(pipeline, GST_STATE_PLAYING);
+}
+
+void gstreamer_send_pause_pipeline(GstElement *pipeline) {
+  gst_element_set_state(pipeline, GST_STATE_PAUSED);
+}
+
+void gstreamer_send_seek(GstElement *pipeline, int64_t seek_pos) {
+    if (!gst_element_seek (pipeline, 1.0, GST_FORMAT_TIME, GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_KEY_UNIT | GST_SEEK_FLAG_SKIP,
+             GST_SEEK_TYPE_SET, seek_pos * GST_SECOND,
+             GST_SEEK_TYPE_NONE, GST_CLOCK_TIME_NONE)) {
+        g_print ("Seek failed!\n");
+    }
+}
-- 
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