void Awake()
{
#if UNITY_EDITOR || UNITY_STANDALONE_WIN
#else
using (AndroidJavaClass gstreamer = new AndroidJavaClass("org.freedesktop.gstreamer.GStreamer"))
{
AndroidJavaClass unityPlayer = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
AndroidJavaObject context = unityPlayer.GetStatic <AndroidJavaObject>("currentActivity").Call <AndroidJavaObject>("getApplicationContext");
gstreamer.CallStatic("init", context);
}
#endif
//Initialize debug log
if (enableDebugLog_)
{
DebugLog.Initialize();
}
//Initialize Gstreamer wrapper
GStreamerWrapper.Initialize();
//Show all elements
//GStreamerWrapper.ShowAllGstElements();
//start native render loop
StartCoroutine(OnRender());
}
IEnumerator OnRender()
{
for (; ;)
{
//Support multithread rendering
yield return(new WaitForEndOfFrame());
GL.IssuePluginEvent(GStreamerWrapper.GetRenderEventFunc(), 0);
}
}
// Use this for initialization
void Start()
{
var actualWidth = width_;
var actualHeight = height_ * 3 / 2;//for I420 YUV
//テクスチャの作成
texture_ = new Texture2D(actualWidth, actualHeight, TextureFormat.Alpha8, false);
//マテリアルの設定
GetComponent <Renderer>().material.mainTexture = texture_;
GetComponent <Renderer>().material.SetFloat("_TextureHeight", actualHeight);
//クリップの作成
clip_ = AudioClip.Create("clip", frequency_, channels_, frequency_, false);
GetComponent <AudioSource>().clip = clip_;
//パイプライン作成
//"uridecodebin uri=https://www.freedesktop.org/software/gstreamer-sdk/data/media/sintel_trailer-480p.webm ! queue ! videoconvert ! appsink name=appVideoSink emit-signals=true !" +
//"uridecodebin uri=https://www.freedesktop.org/software/gstreamer-sdk/data/media/sintel_trailer-480p.webm ! queue ! audioconvert ! appsink name=appAudioSink emit-signals=true"
var video = string.Format("videotestsrc is-live=true ! video/x-raw,width={0},height={1} ! appsink name=appVideoSink emit-signals=true !", width_, height_);
var audio = string.Format("audiotestsrc is-live=true ! audio/x-raw,channels={0},format=F32LE ! appsink name=appAudioSink emit-signals=true", channels_);
//パイプライン作成
pipelineId_ = GStreamerWrapper.AddPipeline(video + audio);
if (pipelineId_ == 0)
{
Debug.LogWarning("AddPipeline() failed, did you set GStreamerManager.prefab in current scene?");
return;
}
#if UNITY_EDITOR || UNITY_STANDALONE_WIN
//テクスチャのセット
GStreamerWrapper.SetTexture(pipelineId_, actualWidth, actualHeight, texture_.GetNativeTexturePtr());
#else
//ビデオ情報
GStreamerWrapper.SetVideoInfo(pipelineId_, actualWidth, actualHeight);
#endif
//オーディオ情報
GStreamerWrapper.SetAudioInfo(pipelineId_, channels_, frequency_, frequency_);
//再生
GStreamerWrapper.Play(pipelineId_);
}
void UpdateVideo()
{
#if UNITY_EDITOR || UNITY_STANDALONE_WIN
#else
//this code is for gl texture workaround (GL_ALPHA8 can not be created by unity in Android platform so GL_ALPHA8 texture will be generated in native code)
if (!textureUpdated_)
{
var externalTexturePtr = GStreamerWrapper.GetTexturePtr(pipelineId_);
//Debug.Log("TextureID!: " + (int)externalTexturePtr);
//0 check
if ((int)externalTexturePtr != 0)
{
var externalTexture = Texture2D.CreateExternalTexture(texture_.width, texture_.height, TextureFormat.Alpha8, false, false, externalTexturePtr);
texture_.UpdateExternalTexture(externalTexture.GetNativeTexturePtr());
textureUpdated_ = true;
}
}
#endif
}
void OnDestroy()
{
//Close Gstramer wrapper
GStreamerWrapper.Finalize();
}
void UpdateAudio()
{
//check deadline
if (GetComponent <AudioSource>().isPlaying&& Time.time > audioDeadLineTime_)
{
GetComponent <AudioSource>().Stop();
clipPosition_ = 0;
Debug.Log("GStreamerPipelineController deadline detected! " + Time.time);
}
//check length
var length = GStreamerWrapper.GetAudioBufferLength(pipelineId_);
if (length <= 0)
{
return;
}
//copy to buffer
var buffer = new float[length];
IntPtr ptr = Marshal.AllocHGlobal(length * sizeof(float));
{
GStreamerWrapper.GetAudioBuffer(pipelineId_, ptr, length);
Marshal.Copy(ptr, buffer, 0, length);
}
Marshal.FreeHGlobal(ptr);
//[-1, 1] => [0, 1]
for (var i = 0; i < buffer.Length; i++)
{
buffer[i] = (buffer[i] * 1.0f + 1) / 2;
}
//count samples
var newSamples = length / clip_.channels;
if (clipPosition_ + newSamples <= clip_.samples)
{
//copy directly
clip_.SetData(buffer, clipPosition_);
clipPosition_ = (clipPosition_ + newSamples) % clip_.samples;
}
else
{
//separate into head(remained) and tail(starting from 0) buffer
var headLength = (clip_.samples - clipPosition_) * clip_.channels;
var tailLength = (clipPosition_ + newSamples - clip_.samples) * clip_.channels;
var head = new float[headLength];
var tail = new float[tailLength];
Array.Copy(buffer, 0, head, 0, headLength);
Array.Copy(buffer, headLength, tail, 0, tailLength);
clip_.SetData(head, clipPosition_);
clip_.SetData(tail, 0);
clipPosition_ = clipPosition_ + newSamples - clip_.samples;
}
//play if not playing
if (!GetComponent <AudioSource>().isPlaying)
{
// 10% buffer required
if (clipPosition_ / (float)clip_.samples > 0.1f)
{
//record deadline
audioDeadLineTime_ = Time.time + clipPosition_ / (float)clip_.frequency;
GetComponent <AudioSource>().Play();
}
}
else
{
//update deadline
audioDeadLineTime_ += newSamples / (float)clip_.frequency;
}
}
