From f3cc38089c1bab4c68e61a3a145a0f00de78ce73 Mon Sep 17 00:00:00 2001
From: Quan HL <quan.luuhoang8@gmail.com>
Date: Wed, 3 Apr 2024 20:46:52 +0700
Subject: [PATCH 1/2] mod_deepgra_tts

---
 lib/synth-audio.js | 20 ++++++++++++++++++--
 test/synth.js      |  1 +
 2 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/lib/synth-audio.js b/lib/synth-audio.js
index f7f4a96..c34cdb3 100644
--- a/lib/synth-audio.js
+++ b/lib/synth-audio.js
@@ -212,7 +212,9 @@ async function synthAudio(client, logger, stats, { account_sid,
         if (audioBuffer?.filePath) return audioBuffer;
         break;
       case 'deepgram':
-        audioBuffer = await synthDeepgram(logger, {credentials, stats, model, text});
+        audioBuffer = await synthDeepgram(logger, {credentials, stats, model, text,
+          renderForCaching, disableTtsStreaming});
+        if (audioBuffer?.filePath) return audioBuffer;
         break;
       case vendor.startsWith('custom') ? vendor : 'cant_match_value':
         ({ audioBuffer, filePath } = await synthCustomVendor(logger,
@@ -719,8 +721,22 @@ const synthWhisper = async(logger, {credentials, stats, voice, text, renderForCa
   }
 };
 
-const synthDeepgram = async(logger, {credentials, stats, model, text}) => {
+const synthDeepgram = async(logger, {credentials, stats, model, text, renderForCaching, disableTtsStreaming}) => {
   const {api_key} = credentials;
+  if (!process.env.JAMBONES_DISABLE_TTS_STREAMING && !renderForCaching && !disableTtsStreaming) {
+    let params = '';
+    params += `{api_key=${api_key}`;
+    params += ',vendor=deepgram';
+    params += `,voice=${model}`;
+    params += ',write_cache_file=1';
+    params += '}';
+
+    return {
+      filePath: `say:${params}${text.replace(/\n/g, ' ')}`,
+      servedFromCache: false,
+      rtt: 0
+    };
+  }
   try {
     const post = bent('https://api.deepgram.com', 'POST', 'buffer', {
       'Authorization': `Token ${api_key}`,
diff --git a/test/synth.js b/test/synth.js
index 44c4782..2fe922b 100644
--- a/test/synth.js
+++ b/test/synth.js
@@ -595,6 +595,7 @@ test('Deepgram speech synth tests', async(t) => {
       },
       model: 'aura-asteria-en',
       text,
+      renderForCaching: true
     });
     t.ok(!opts.servedFromCache, `successfully synthesized deepgram audio to ${opts.filePath}`);
 

From 0471b94ebe949eb664149ac08048904adf155140 Mon Sep 17 00:00:00 2001
From: Quan HL <quan.luuhoang8@gmail.com>
Date: Thu, 4 Apr 2024 10:12:24 +0700
Subject: [PATCH 2/2] wip

---
 lib/synth-audio.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/synth-audio.js b/lib/synth-audio.js
index c34cdb3..cb49653 100644
--- a/lib/synth-audio.js
+++ b/lib/synth-audio.js
@@ -146,7 +146,7 @@ async function synthAudio(client, logger, stats, { account_sid,
     ) ||
     (
       !process.env.JAMBONES_DISABLE_TTS_STREAMING &&
-      vendor === 'elevenlabs'
+      ['elevenlabs', 'deepgram'].includes(vendor)
     )
   ) {
     filePath = `${TMP_FOLDER}/${key.replace('tts:', `tts-${salt || ''}`)}.r8`;