Commands/Shaders/Get-OBSAudioShader.ps1
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function Get-OBSAudioShader { [Alias('Set-OBSAudioShader','Add-OBSAudioShader')] param( # Set the audio_peak of OBSAudioShader [Alias('audio_peak')] [ComponentModel.DefaultBindingProperty('audio_peak')] [Single] $AudioPeak, # Set the audio_magnitude of OBSAudioShader [Alias('audio_magnitude')] [ComponentModel.DefaultBindingProperty('audio_magnitude')] [Single] $AudioMagnitude, # Set the intensity of OBSAudioShader [ComponentModel.DefaultBindingProperty('intensity')] [Single] $Intensity, # The name of the source. This must be provided when adding an item for the first time [Parameter(ValueFromPipelineByPropertyName)] [Alias('SceneItemName')] [String] $SourceName, # The name of the filter. If this is not provided, this will default to the shader name. [Parameter(ValueFromPipelineByPropertyName)] [String] $FilterName, # The inline value of the shader. This will normally be provided as a default parameter, based off of the name. [Alias('ShaderContent')] [String] $ShaderText, # If set, will force the recreation of a shader that already exists [Management.Automation.SwitchParameter] $Force, # If set, will pass thru the commands that would be sent to OBS (these can be sent at any time with Send-OBS) [Management.Automation.SwitchParameter] $PassThru, # If set, will not wait for a response from OBS (this will be faster, but will not return anything) [Management.Automation.SwitchParameter] $NoResponse, # If set, use the shader elapsed time, instead of the OBS system elapsed time [ComponentModel.DefaultBindingProperty('use_shader_elapsed_time')] [Management.Automation.SwitchParameter] $UseShaderTime ) process { $shaderName = 'audio' $ShaderNoun = 'OBSAudioShader' if (-not $psBoundParameters['ShaderText']) { $psBoundParameters['ShaderText'] = $ShaderText = ' // Audio shader example showing the difference between audio_peak and audio_magnitude. // Left half uses audio_peak (red), right half uses audio_magnitude (blue). uniform float audio_peak; uniform float audio_magnitude; uniform float intensity < string label = "Audio intensity"; string widget_type = "slider"; float minimum = 0.1; float maximum = 3.0; float step = 0.1; > = 1.0; float4 mainImage(VertData v_in) : TARGET { float4 color = image.Sample(textureSampler, v_in.uv); // Split screen based on UV coordinate if (v_in.uv.x < 0.5) { // Left half: audio_peak (instantaneous spikes, more reactive) // Tint with red to show peak activity. float peak_strength = audio_peak * intensity; float3 peak_color = color.rgb + float3(peak_strength, 0, 0); return float4(peak_color, color.a); } else { // Right half: audio_magnitude (RMS/averaged levels, smoother) // Tint with blue to show magnitude activity. float mag_strength = audio_magnitude * intensity; float3 mag_color = color.rgb + float3(0, 0, mag_strength); return float4(mag_color, color.a); } } /* EXPLANATION: - audio_peak: Shows instantaneous maximum levels, very responsive to drums/percussion. - audio_magnitude: Shows RMS (Root Mean Square) levels, smoother and represents sustained audio. TYPICAL BEHAVIOR: - With music containing drums: Left side (peak) will flash more dramatically on beats. - With sustained tones: Right side (magnitude) will show more consistent levels. - Peak reacts faster to sudden sounds, magnitude is more stable for smooth effects. */ ' } $MyVerb, $myNoun = $MyInvocation.InvocationName -split '-',2 if (-not $myNoun) { $myNoun = $myVerb $myVerb = 'Get' } switch -regex ($myVerb) { Get { $FilterNamePattern = "(?>$( if ($FilterName) { [Regex]::Escape($FilterName) } else { [Regex]::Escape($ShaderNoun -replace '^OBS' -replace 'Shader$'),[Regex]::Escape($shaderName) -join '|' } ))" if ($SourceName) { Get-OBSInput | Where-Object InputName -eq $SourceName | Get-OBSSourceFilterList | Where-Object FilterName -Match $FilterNamePattern } else { $obs.Inputs | Get-OBSSourceFilterList | Where-Object FilterName -Match $FilterNamePattern } } 'Remove' { if ($SourceName) { Get-OBSInput | Where-Object InputName -eq $SourceName | Get-OBSSourceFilterList | Where-Object FilterName -Match $FilterNamePattern | Remove-OBSSourceFilter } } '(?>Add|Set)' { $ShaderSettings = [Ordered]@{} :nextParameter foreach ($parameterMetadata in $MyInvocation.MyCommand.Parameters[@($psBoundParameters.Keys)]) { foreach ($parameterAttribute in $parameterMetadata.Attributes) { if ($parameterAttribute -isnot [ComponentModel.DefaultBindingPropertyAttribute]) { continue } $ShaderSettings[$parameterAttribute.Name] = $PSBoundParameters[$parameterMetadata.Name] if ($ShaderSettings[$parameterAttribute.Name] -is [switch]) { $ShaderSettings[$parameterAttribute.Name] = $ShaderSettings[$parameterAttribute.Name] -as [bool] } continue nextParameter } } if (-not $PSBoundParameters['FilterName']) { $filterName = $PSBoundParameters['FilterName'] = $shaderName } $ShaderFilterSplat = [Ordered]@{ ShaderSetting = $ShaderSettings FilterName = $FilterName SourceName = $SourceName } foreach ($CarryOnParameter in "PassThru", "NoResponse","Force") { if ($PSBoundParameters.ContainsKey($CarryOnParameter)) { $ShaderFilterSplat[$CarryOnParameter] = $PSBoundParameters[$CarryOnParameter] } } if (-not $script:CachedShaderFilesFromCommand) { $script:CachedShaderFilesFromCommand = @{} } if ($Home -and -not $script:CachedShaderFilesFromCommand[$shaderName]) { $MyObsPowerShellPath = Join-Path $home ".obs-powershell" $ThisShaderPath = Join-Path $MyObsPowerShellPath "$shaderName.shader" $shaderText | Set-Content -LiteralPath $ThisShaderPath $script:CachedShaderFilesFromCommand[$shaderName] = Get-Item -LiteralPath $ThisShaderPath } if ($script:CachedShaderFilesFromCommand[$shaderName]) { $ShaderFilterSplat.ShaderFile = $script:CachedShaderFilesFromCommand[$shaderName].FullName } else { $ShaderFilterSplat.ShaderText = $shaderText } if ($myVerb -eq 'Add') { Add-OBSShaderFilter @ShaderFilterSplat } else { Set-OBSShaderFilter @ShaderFilterSplat } } } } } |