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Overview
========
GStreamer-MediaSDK is GStreamer plugins for Intel(R) Media SDK that takes advantage of Intel(R) Media SDK API
to execute video decode, video encode and video post-processing.

License
========

GStreamer-MediaSDK is distributed under BSD-3 Clause license.
See LICENSE and NOTICE files in the root folder for details.

Prerequisites
=============

- Media SDK 1.* or higher
- GStreamer 1.x

Operating System        | Packages                      | Requirement | Notes
---------------------------------------------------------------------------------
CentOS 7.1+             | gstreamer1                    | Mandatory   | Runtime package
                        | gstreamer1-devel              | Mandatory   | Development files
                        | gstreamer1-plugins-base       | Mandatory   | Helper libraries
                        | gstreamer1-plugins-base-devel | Mandatory   | Development files
                        | gstreamer1-plugins-good       | Optional    | v4l2src, qtmux, etc
                        | gstreamer1-plugins-bad        | Optional    | videoparse, glimagesink, etc

Install packages with:
 - CentOS 7.1+ with 'sudo yum install <package>'


Building & Installation
=======================

Build and install using usual autotools approach:
./autogen.sh
make
sudo make install

Media SDK package is expected to be found in the directory pointed to by MFX_HOME
environment variable. You can use it as:
MFX_HOME=/path/to/mediasdk ./autogen.sh
or
MFX_HOME=/path/to/mediasdk ./configure


Plugins Provided by This Package
================================

DSO name                | Plugin name             | Descrition
---------------------------------------------------------------------------------------------
libmfx_gst_h264ve.so    | mfx_gst_h264ve          | Media SDK H.264 Encoding GStreamer Plugin
libmfx_gst_h265ve.so    | mfx_gst_h265ve          | Media SDK H.265 Encoding GStreamer Plugin
libmfx_gst_jpegve.so    | mfx_gst_jpegve          | Media SDK JPEG Encoding GStreamer Plugin
libmfx_gst_vpp.so       | mfx_gst_vpp             | Media SDK VPP GStreamer Plugin
libmfx_gst_h264vd.so    | mfx_gst_h264vd          | Media SDK H.264 Decoding GStreamer Plugin


Useful Commands
===============

- To load plugins in some GStreamer apps:
export GST_PLUGIN_PATH_1_0=/path/to/plugins/folder

- To check plugin visibility to GStreamer:
gst-inspect-1.0 --exists mfx_gst_h264ve; echo $?

- Get basic information on the plugin:
gst-inspect-1.0 --plugin mfx_gst_h264ve

- Get basic information on the plugin:
gst-inspect-1.0 mfx_gst_h264ve


Command Line Examples
=====================

# GStreamer has built-in debug facilities controlled by --gst-debug-* options.
# Debug levels:
#  0 - no logging
#  7 - maximum level
gst-launch-1.0 --gst-debug-no-color --gst-debug-level=7 filesrc location=in.file ! filesink location=out.file

# Encode input YUV file with scaling by AVC encoder, Media SDK VPP and Encoder are used.
# VPP accepts system memory and produces video memory to the encoder
gst-launch-1.0 \
  filesrc location=foreman_352x288_300.yuv ! \
  videoparse format=nv12 width=352 height=288 framerate=30/1 ! \
  mfx_gst_vpp memory=video width=1280 height=720 ! \
  mfx_gst_h264ve RateControlMethod=cbr TargetKbps=8000 GopRefDist=1 ! \
  qtmux ! \
  filesink location=mfx_out_foreman.mp4

# Encode input YUV file to HEVC and mux it to MKV.
gst-launch-1.0 \
  filesrc location=foreman_352x288_300.yuv ! \
  videoparse format=nv12 width=352 height=288 framerate=30/1 ! \
  mfx_gst_h265ve QPI=10 QPP=15 QPB=15 ! \
  matroskamux ! \
  filesink location=output.mkv

# Encode input YUV file to JPEG and mux it to AVI.
gst-launch-1.0 \
  filesrc location=foreman_352x288_300.yuv ! \
  videoparse format=nv12 width=352 height=288 framerate=30/1 ! \
  mfx_gst_jpegve Quality=50 ! \
  avimux ! \
  filesink location=output.avi

# Encode input YUV file with scaling by AVC encoder, Media SDK VPP and Encoder are used.
# There are 2 VPP plugins. The first one works in passthrough mode. The second one works via MediaSDK.
# The First VPP accepts system memory and produces video memory to the second VPP
gst-launch-1.0 \
  filesrc location=foreman_352x288_300.yuv ! \
  videoparse format=nv12 width=352 height=288 framerate=30/1 ! \
  mfx_gst_vpp passthrough=on memory=video ! \
  mfx_gst_vpp memory=video width=1280 height=720 ! \
  mfx_gst_h264ve RateControlMethod=cbr TargetKbps=8000 GopRefDist=1 ! \
  qtmux ! \
  filesink location=mfx_out_foreman.mp4

# Perform CSC YV12 -> NV12 with synthetic YUV data source and then encode it.
gst-launch-1.0 \
  videotestsrc num-buffers=150 ! \
  video/x-raw,format=YV12,width=1280,height=720,framerate=30/1 ! \
  mfx_gst_vpp memory=video width=1280 height=720 ! \
  mfx_gst_h264ve RateControlMethod=cbr TargetKbps=3000 GopRefDist=1 !  \
  qtmux ! \
  filesink location=videotest.mp4

# Perform CSC BGRA -> NV12 with synthetic YUV data source and then encode it.
gst-launch-1.0 \
  videotestsrc num-buffers=150 ! \
  video/x-raw,format=BGRA,width=1280,height=720,framerate=30/1 ! \
  mfx_gst_vpp memory=video width=1280 height=720 ! \
  mfx_gst_h264ve RateControlMethod=cbr TargetKbps=3000 GopRefDist=1 !  \
  qtmux ! \
  filesink location=videotest.mp4

# Perform CSC I420->NV12 from camera source and then encode it.
gst-launch-1.0 \
  v4l2src num-buffers=150 ! \
  video/x-raw,format=I420,width=1280,height=720,framerate=30/1 ! \
  mfx_gst_vpp memory=video width=1280 height=720 ! \
  mfx_gst_h264ve RateControlMethod=cbr TargetKbps=5000 GopRefDist=1 ! \
  qtmux ! \
  filesink location=camera_i420.mp4

# Demux and decode from input MP4 file to YUV file.
# Decoder produces system memory.
gst-launch-1.0 \
  filesrc location=input.mp4 ! \
  qtdemux ! \
  mfx_gst_h264vd memory=system ! \
  filesink location=output.yuv

# Demux and decode from input MP4 file then do screen rendering.
# Decoder produces system memory.
gst-launch-1.0 \
  filesrc location=input.mp4 ! \
  qtdemux ! \
  mfx_gst_h264vd memory=system ! \
  glimagesink

# Demux and decode from input MP4 file to fakesink.
# Decoder produces video memory.
gst-launch-1.0 \
  filesrc location=input.mp4 ! \
  qtdemux ! \
  mfx_gst_h264vd memory=video ! \
  fakesink

# Decode input MP4 and resize raw data.
# Decoder produces video memory.
gst-launch-1.0 \
  filesrc location=input.mp4 ! \
  qtdemux ! \
  mfx_gst_h264vd memory=video ! \
  mfx_gst_vpp width=352 height=288 memory=system ! \
  filesink location=output.yuv

# Decode input MP4 and resize raw data.
# Decoder produces system memory.
gst-launch-1.0 \
  filesrc location=input.mp4 ! \
  qtdemux ! \
  mfx_gst_h264vd memory=system ! \
  mfx_gst_vpp width=352 height=288 memory=system ! \
  filesink location=output.yuv

# Decode, resize and do screen rendering.
# Decoder produces video memory.
# VPP produces system memory.
gst-launch-1.0 \
  filesrc location=input.mp4 ! \
  qtdemux ! \
  mfx_gst_h264vd memory=video ! \
  mfx_gst_vpp width=352 height=288 memory=system ! \
  glimagesink

# Full transcode: demux->decode->vpp->encode->mux.
# VPP performs downscaling.
# All components work with video memory.
gst-launch-1.0 \
  filesrc location=input.mp4 ! \
  qtdemux ! \
  mfx_gst_h264vd memory=video ! \
  mfx_gst_vpp width=720 height=480 memory=video ! \
  mfx_gst_h264ve RateControlMethod=cbr TargetKbps=2000 GopRefDist=1 ! \
  qtmux ! \
  filesink location=output.mp4

# Full transcode: demux->decode->vpp->encode->mux.
# VPP performs downscaling.
# All components work with system memory.
gst-launch-1.0 \
  filesrc location=input.mp4 ! \
  qtdemux ! \
  mfx_gst_h264vd memory=system ! \
  mfx_gst_vpp width=720 height=480 memory=system ! \
  mfx_gst_h264ve RateControlMethod=cbr TargetKbps=2000 GopRefDist=1 ! \
  qtmux ! \
  filesink location=output.mp4

# Deinterlacing.
gst-launch-1.0 \
  filesrc location=in.yuv ! \
  videoparse format=i420 width=720 height=480 framerate=30/1 !
  interlace field-pattern=2 top-field-first=true ! \
  mfx_gst_vpp width=640 height=480 di=bob ! \
  glimagesink

# Field weaving. This is artificial command line to check field weaving support.
# We treat each frame as a half of the whole picture (one field). So, resulted image will have doubled height.
gst-launch-1.0 \
  videotestsrc pattern=18 ! \
  video/x-raw,format=YUY2,width=720,height=480,framerate=60/1,interlace-mode=interleaved ! \
  mfx_gst_vpp di=weaving ! \
  glimagesink

# RTP streaming
# Sender side:
gst-launch-1.0 \
  filesrc location=in.yuv ! \
  videoparse format=nv12 width=720 height=480 framerate=30/1 ! \
  mfx_gst_vpp width=640 height=480 memory=video ! \
  mfx_gst_h264ve RateControlMethod=cbr TargetKbps=3000 GopRefDist=1 ! \
  rtph264pay config-interval=10 pt=96 ! udpsink host=127.0.0.1 port=5003

# Receiver side:
gst-launch-1.0 \
  udpsrc port=5003 \
  caps = "application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264, payload=(int)96" ! \
  rtph264depay ! \
  h264parse ! \
  "video/x-h264, stream-format=byte-stream" ! \
  filesink location=test.264