<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv="Content-Type" content="text/html; charset=us-ascii"> <meta name="Generator" content="Microsoft Word 15 (filtered medium)"> <style></style> </head> <body lang="DE" link="#0563C1" vlink="#954F72"> <div class="WordSection1"> Hi all,<o:p></o:p> <o:p> </o:p> i’m facing an issue related to gstreamers module “vaapipostproc” in version 1.14.4. I’m trying to adjust the colorbalance of a video stream by setting the following properties <o:p></o:p> <o:p> </o:p> <![if !supportLists]>- <![endif]>saturation<o:p></o:p> <![if !supportLists]>- <![endif]>contrast<o:p></o:p> <![if !supportLists]>- <![endif]>brightness<o:p></o:p> <o:p> </o:p> while active streaming. <o:p></o:p> <o:p> </o:p> I’m doing this by setting the following properties: <o:p></o:p> <o:p> </o:p> g_object_set( G_OBJECT( vaapipostproc ), "saturation", saturation, NULL );<o:p></o:p> g_object_set( G_OBJECT( vaapipostproc ), "contrast", contrast, NULL );<o:p></o:p> g_object_set( G_OBJECT( vaapipostproc ), "brightness", brightness, NULL );<o:p></o:p> <o:p> </o:p> whereas saturation, contrast and brightness are properly initialized gfloat variables.<o:p></o:p> <o:p> </o:p> It seems that there is a domination order contrast > brightness > saturation. <o:p></o:p> <o:p> </o:p> I’ll explain this shortly:<o:p></o:p> <o:p> </o:p> Case I:<o:p></o:p> <![if !supportLists]>1. <![endif]>Setting saturation to maximum -> Image is properly adjusted<o:p></o:p> <![if !supportLists]>2. <![endif]>Minimal reduction of brightness -> Saturation of image is reset<o:p></o:p> <![if !supportLists]>3. <![endif]>Resetting brightness to default value -> Image has again the saturation of (1)<o:p></o:p> <o:p> </o:p> Case II:<o:p></o:p> <![if !supportLists]>1. <![endif]>Setting brightness to maximum -> Image is properly adjusted<o:p></o:p> <![if !supportLists]>2. <![endif]>Minimal reduction of contrast -> Brightness of image is reset<o:p></o:p> <![if !supportLists]>3. <![endif]>Resetting contrast to default value -> Image has again the brightness of (1)<o:p></o:p> <o:p> </o:p> Case III:<o:p></o:p> <![if !supportLists]>1. <![endif]>Setting saturation to maximum -> Image is properly adjusted<o:p></o:p> <![if !supportLists]>2. <![endif]>Minimal reduction of contrast -> Saturation of the image is reset<o:p></o:p> <![if !supportLists]>3. <![endif]>Resetting the contrast to default value -> Image has again the saturation of (1)<o:p></o:p> <o:p> </o:p> <o:p> </o:p> I’ve checked this behavior by setting the property values programmatically in code and also by setting up the pipeline with the corresponding values up front. <o:p></o:p> <o:p> </o:p> Am I doing wrong, or is there a bug in the module “vaapipostproc”? <o:p></o:p> <o:p> </o:p> Thanks in advance!<o:p></o:p> <o:p> </o:p> Best regards<o:p></o:p> Michael<o:p></o:p> <o:p></o:p> </div> <div style="background-color:#FFFFFF"> Bitte beachten / Please note! <div style="font-size:12pt; line-height:10pt; font-family:'times roman',serif;"> ******************************************************************************* AGCO GmbH Sitz der AGCO GmbH: Johann-Georg-Fendt-Str.4, 87616 Marktoberdorf, Germany Registergericht Amtsgericht Kempten HRB 10327 Geschäftsführer: Michael Gschwender, Peter-Josef Paffen, Dr. Heribert Reiter, Ekkehart Glaeser Vorsitzender des Aufsichtsrates: Dr. Rob Smith ******************************************************************************* Diese E-Mail ist nur für den Empfänger bestimmt, an den es gerichtet ist und kann vertrauliches bzw. unter das Berufsgeheimnis fallendes Material enthalten. 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