Function buildGeminiLiveSetupMessage

shared/src/voice.ts:432–464

(
    language?: string,
    voiceName?: string,
    systemInstruction?: string,
    options?: { affectiveDialog?: boolean }
)

/** Wire-format setup frame for Gemini Live BidiGenerateContent (hub proxy + web client). */
export function buildGeminiLiveSetupMessage(
    language?: string,
    voiceName?: string,
    systemInstruction?: string,
    options?: { affectiveDialog?: boolean }
): { setup: Record<string, unknown> } {
    const liveConfig = buildGeminiLiveConfig(language, voiceName, systemInstruction)
    const resolvedVoice = resolveGeminiLiveVoice(voiceName)
    return {
        setup: {
            model: `models/${liveConfig.model}`,
            generationConfig: {
                responseModalities: ['AUDIO'],
                ...(options?.affectiveDialog ? { enableAffectiveDialog: true } : {}),
                speechConfig: {
                    voiceConfig: {
                        prebuiltVoiceConfig: { voiceName: resolvedVoice }
                    }
                }
            },
            systemInstruction: {
                parts: [{ text: liveConfig.systemInstruction }]
            },
            tools: liveConfig.tools.map((t) => ({
                functionDeclarations: t.functionDeclarations.map((fd) => ({
                    name: fd.name,
                    description: fd.description,
                    parameters: fd.parameters
                }))
            }))
        }
    }
}