feat: support audioChannelCount (#289)

Author: jkwlui

packages/google-cloud-node/.gitignore

@@ -12,3 +12,4 @@ system-test/*key.json
 google-cloud-logging-winston-*.tgz
 google-cloud-logging-bunyan-*.tgz
 package-lock.json
+__pycache__

packages/google-cloud-node/protos/google/cloud/speech/v1/cloud_speech.proto

@@ -215,6 +215,17 @@ message RecognitionConfig {
   // for all other audio formats. For details, see [AudioEncoding][google.cloud.speech.v1.RecognitionConfig.AudioEncoding].
   int32 sample_rate_hertz = 2;
 
+  // *Optional* The number of channels in the input audio data.
+  // ONLY set this for MULTI-CHANNEL recognition.
+  // Valid values for LINEAR16 and FLAC are `1`-`8`.
+  // Valid values for OGG_OPUS are '1'-'254'.
+  // Valid value for MULAW, AMR, AMR_WB and SPEEX_WITH_HEADER_BYTE is only `1`.
+  // If `0` or omitted, defaults to one channel (mono).
+  // Note: We only recognize the first channel by default.
+  // To perform independent recognition on each channel set
+  // `enable_separate_recognition_per_channel` to 'true'.
+  int32 audio_channel_count = 7;
+
   // This needs to be set to `true` explicitly and `audio_channel_count` > 1
   // to get each channel recognized separately. The recognition result will
   // contain a `channel_tag` field to state which channel that result belongs

packages/google-cloud-node/src/v1/doc/google/cloud/speech/v1/doc_cloud_speech.js

@@ -149,6 +149,17 @@ const StreamingRecognitionConfig = {
  *   This field is optional for `FLAC` and `WAV` audio files and required
  *   for all other audio formats. For details, see AudioEncoding.
  *
+ * @property {number} audioChannelCount
+ *   *Optional* The number of channels in the input audio data.
+ *   ONLY set this for MULTI-CHANNEL recognition.
+ *   Valid values for LINEAR16 and FLAC are `1`-`8`.
+ *   Valid values for OGG_OPUS are '1'-'254'.
+ *   Valid value for MULAW, AMR, AMR_WB and SPEEX_WITH_HEADER_BYTE is only `1`.
+ *   If `0` or omitted, defaults to one channel (mono).
+ *   Note: We only recognize the first channel by default.
+ *   To perform independent recognition on each channel set
+ *   `enable_separate_recognition_per_channel` to 'true'.
+ *
  * @property {boolean} enableSeparateRecognitionPerChannel
  *   This needs to be set to `true` explicitly and `audio_channel_count` > 1
  *   to get each channel recognized separately. The recognition result will

packages/google-cloud-node/src/v1/speech_client.js

@@ -342,20 +342,14 @@ class SpeechClient {
    * // Handle the operation using the promise pattern.
    * client.longRunningRecognize(request)
    *   .then(responses => {
-   *     const operation = responses[0];
-   *     const initialApiResponse = responses[1];
+   *     const [operation, initialApiResponse] = responses;
    *
    *     // Operation#promise starts polling for the completion of the LRO.
    *     return operation.promise();
    *   })
    *   .then(responses => {
-   *     // The final result of the operation.
    *     const result = responses[0];
-   *
-   *     // The metadata value of the completed operation.
    *     const metadata = responses[1];
-   *
-   *     // The response of the api call returning the complete operation.
    *     const finalApiResponse = responses[2];
    *   })
    *   .catch(err => {
@@ -382,8 +376,7 @@ class SpeechClient {
    * // Handle the operation using the event emitter pattern.
    * client.longRunningRecognize(request)
    *   .then(responses => {
-   *     const operation = responses[0];
-   *     const initialApiResponse = responses[1];
+   *     const [operation, initialApiResponse] = responses;
    *
    *     // Adding a listener for the "complete" event starts polling for the
    *     // completion of the operation.

packages/google-cloud-node/src/v1p1beta1/speech_client.js

@@ -342,20 +342,14 @@ class SpeechClient {
    * // Handle the operation using the promise pattern.
    * client.longRunningRecognize(request)
    *   .then(responses => {
-   *     const operation = responses[0];
-   *     const initialApiResponse = responses[1];
+   *     const [operation, initialApiResponse] = responses;
    *
    *     // Operation#promise starts polling for the completion of the LRO.
    *     return operation.promise();
    *   })
    *   .then(responses => {
-   *     // The final result of the operation.
    *     const result = responses[0];
-   *
-   *     // The metadata value of the completed operation.
    *     const metadata = responses[1];
-   *
-   *     // The response of the api call returning the complete operation.
    *     const finalApiResponse = responses[2];
    *   })
    *   .catch(err => {
@@ -382,8 +376,7 @@ class SpeechClient {
    * // Handle the operation using the event emitter pattern.
    * client.longRunningRecognize(request)
    *   .then(responses => {
-   *     const operation = responses[0];
-   *     const initialApiResponse = responses[1];
+   *     const [operation, initialApiResponse] = responses;
    *
    *     // Adding a listener for the "complete" event starts polling for the
    *     // completion of the operation.

packages/google-cloud-node/synth.metadata

@@ -1,19 +1,19 @@
 {
-  "updateTime": "2019-01-17T12:49:57.662306Z",
+  "updateTime": "2019-02-04T21:37:22.951258Z",
   "sources": [
     {
       "generator": {
         "name": "artman",
-        "version": "0.16.6",
-        "dockerImage": "googleapis/artman@sha256:12722f2ca3fbc3b53cc6aa5f0e569d7d221b46bd876a2136497089dec5e3634e"
+        "version": "0.16.8",
+        "dockerImage": "googleapis/artman@sha256:75bc07ef34a1de9895c18af54dc503ed3b3f3b52e85062e3360a979d2a0741e7"
       }
     },
     {
       "git": {
         "name": "googleapis",
         "remote": "https://github.com/googleapis/googleapis.git",
-        "sha": "0ac60e21a1aa86c07c1836865b35308ba8178b05",
-        "internalRef": "229626798"
+        "sha": "f26c727dde5051abefc5ad9e7dee82a2686ad2b0",
+        "internalRef": "232306662"
       }
     },
     {