H264 Graphics Pipeline in XRDP

[antoine-roux]

Hello,

I'm wondering if XRDP implements the RDP 8.1 Graphics Pipeline.
I'm trying to use the /gfx-h264 of FreeRDP but it do not works with a XRDP server :(

In the XRDP source code, I can read some lines about H264 codec, but it appears to be another thing not compatible with FreeRDP. What I understand is that Graphics Pipeline's H264 is not just another codec but another channel. Am I wrong?

From FreeRDP side, I see 3 codecs: NSC, JPEG and RemoteFX
https://github.com/FreeRDP/FreeRDP/blob/59e8b6728799e46455ed0eb93a5291ea87eb464f/libfreerdp/core/capabilities.c#L83-L126

But from XRDP side, there is much more codecs.

xrdp/common/xrdp_constants.h

Lines 311 to 335 in 577bd82

	/* Bitmap Codec: codecGUID (MS-RDPBCGR 2.2.7.2.10.1.1) */
	/* CODEC_GUID_NSCODEC CA8D1BB9-000F-154F-589FAE2D1A87E2D6 */
	#define XR_CODEC_GUID_NSCODEC \
	"\xb9\x1b\x8d\xca\x0f\x00\x4f\x15\x58\x9f\xae\x2d\x1a\x87\xe2\xd6"
	/* CODEC_GUID_REMOTEFX 76772F12-BD72-4463-AFB3B73C9C6F7886 */
	#define XR_CODEC_GUID_REMOTEFX \
	"\x12\x2F\x77\x76\x72\xBD\x63\x44\xAF\xB3\xB7\x3C\x9C\x6F\x78\x86"
	/* CODEC_GUID_IMAGE_REMOTEFX 2744CCD4-9D8A-4E74-803C-0ECBEEA19C54 */
	#define XR_CODEC_GUID_IMAGE_REMOTEFX \
	"\xD4\xCC\x44\x27\x8A\x9D\x74\x4E\x80\x3C\x0E\xCB\xEE\xA1\x9C\x54"
	/* MFVideoFormat_H264 0x34363248-0000-0010-800000AA00389B71 */
	#define XR_CODEC_GUID_H264 \
	"\x48\x32\x36\x34\x00\x00\x10\x00\x80\x00\x00\xAA\x00\x38\x9B\x71"
	/* CODEC_GUID_JPEG 1BAF4CE6-9EED-430C-869ACB8B37B66237 */
	#define XR_CODEC_GUID_JPEG \
	"\xE6\x4C\xAF\x1B\xED\x9E\x0C\x43\x86\x9A\xCB\x8B\x37\xB6\x62\x37"
	/* CODEC_GUID_PNG 0E0C858D-28E0-45DB-ADAA0F83E57CC560 */
	#define XR_CODEC_GUID_PNG \
	"\x8D\x85\x0C\x0E\xE0\x28\xDB\x45\xAD\xAA\x0F\x83\xE5\x7C\xC5\x60"

This sounds very interesting, but I unable to use them... Can someone tell me how to do?

Thanks,
Antoine

[blackcrack]

i have there a link because graphic codec and a community for a free codec ,
take a look : aomedia.org

AV1: next generation video – The Constrained Directional Enhancement Filter

on Mozilla Hacks, a free codec for web.

best regards
Blacky

[speidy]

xrdp doesn't support GFX which should be implemented as virtual channel, hence no official H264 graphics in xrdp.

The codecs you mentioned is a special implementation (doesn't interoperate with standard RDP clients)

They can be used with NeutrinoRDP client only tho.

[rkkoszewski]

Are there any plans to add support for this in xrdp at some point? Or is it just not possible with X?