commit f851c7952cfa4308ed77173f51b2fa2f1f09e41b
Author: Rafael Caricio <rafael@caricio.com>
Date:   Fri Feb 11 11:11:04 2022 +0100

    Not working

diff --git a/.gitignore b/.gitignore
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index 0000000..68a797f
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+ "matchers",
+ "regex",
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+ "quote",
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+ "wasm-bindgen-backend",
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+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
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+[[package]]
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+[[package]]
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diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..af070ad
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,20 @@
+[package]
+name = "google-cloud-playground"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+eyre = "0.6.6"
+log = "0.4"
+tracing-subscriber = { version = "0.3", features = ["env-filter"] }
+tokio = { version = "1.15", features = ["macros", "rt-multi-thread", "fs"] }
+google-authz = { version = "1.0.0-alpha.2", features = ["tonic"] }
+#console-subscriber = "0.1"
+bytes = "1.1.0"
+# grpc + gcp
+tonic = { version = "0.6", features = ["tls", "tls-webpki-roots"] }
+prost = { version = "0.9" }
+prost-types = { version = "0.9" }
+google-api-proto = { version = "1.0.0-alpha", features = ["google-cloud-translation-v3", "google-cloud-speech-v1"] }
+tokio-stream = "0.1.8"
+futures-util = "0.3"
diff --git a/some-audio.flac b/some-audio.flac
new file mode 100644
index 0000000..63fb9e7
Binary files /dev/null and b/some-audio.flac differ
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..97878bc
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,137 @@
+use std::io::Cursor;
+use bytes::BytesMut;
+use std::path::PathBuf;
+use std::pin::Pin;
+use google_api_proto::google::cloud::speech::v1::streaming_recognize_request::StreamingRequest;
+use google_api_proto::google::cloud::speech::v1::{
+    recognition_config::AudioEncoding, speech_client::SpeechClient, RecognitionConfig,
+    StreamingRecognitionConfig, StreamingRecognizeRequest,
+};
+use google_api_proto::google::cloud::translation::v3::{TranslateTextRequest, Translation};
+use google_api_proto::google::cloud::translation::v3::translation_service_client::TranslationServiceClient;
+use google_authz::{Credentials, GoogleAuthz};
+use log::{debug, info};
+use prost_types::Duration;
+use tokio::io::AsyncReadExt;
+use tokio_stream::wrappers::ReceiverStream;
+use tonic::IntoStreamingRequest;
+use tonic::transport::Channel;
+
+#[tokio::main]
+async fn main() -> eyre::Result<()> {
+    tracing_subscriber::fmt::init();
+    //console_subscriber::init();
+
+    debug!("starting...");
+
+    let channel = Channel::from_static("https://speech.googleapis.com")
+        .connect()
+        .await?;
+    // let channel_translate = Channel::from_static("https://translate.googleapis.com")
+    //     .connect()
+    //     .await?;
+
+    let credentials = Credentials::builder()
+        .json_file("i-centralvideo-dictate-dev-c184dd68967a.json".as_ref())
+        .build()
+        .await?;
+    let channel = GoogleAuthz::builder(channel)
+        .credentials(credentials)
+        .build()
+        .await;
+
+    debug!("authenticated channel created!");
+
+
+    // let mut translate = TranslationServiceClient::new(channel_translate);
+    // let resp = translate.translate_text(TranslateTextRequest {
+    //     contents: vec!["Que palhacada danada".to_string()],
+    //     mime_type: "text/plain".to_string(),
+    //     target_language_code: "en_US".to_string(),
+    //     ..Default::default()
+    // }).await.unwrap();
+    // debug!("requested translation");
+    //
+    // for trans in resp.into_inner().translations.iter() {
+    //     debug!("translation = {} // {}", trans.translated_text, trans.detected_language_code);
+    // }
+
+    let mut client = SpeechClient::new(channel);
+
+    let (sender, receiver) = tokio::sync::mpsc::channel(1024);
+    let receiver_stream = Box::pin(ReceiverStream::new(receiver));
+    let mut stream = client.streaming_recognize(receiver_stream).await?.into_inner();
+    debug!("Called the streaming_recognize method");
+
+    sender.try_send(StreamingRecognizeRequest {
+        streaming_request: Some(StreamingRequest::StreamingConfig(
+            StreamingRecognitionConfig {
+                config: Some(RecognitionConfig {
+                    encoding: AudioEncoding::Flac.into(), // matching current example file
+                    sample_rate_hertz: 48000,             // matching current example file
+                    language_code: "en-US".to_string(),   // we only support en-US to start with
+                    model: "video".to_string(),           // dictate does not set this option
+                    use_enhanced: true,                   // dictate does not set this option
+                    profanity_filter: true,               // used by Dictate, so we also use it here
+                    enable_word_time_offsets: true, // important so we can get the spoken word time ranges
+                    max_alternatives: 1,            // make sure the default is used
+                    ..Default::default()
+                }),
+                single_utterance: false,
+                interim_results: false,
+            },
+        )),
+    })?;
+
+    debug!("sent streaming request configurations");
+
+    let file = tokio::fs::File::open("some-audio.flac").await?;
+    let mut audio_file = tokio::io::BufReader::new(file);
+
+    // spawn task reading from file and uploading to Google Speech API
+    tokio::spawn(async move {
+        // read file chunk
+        let mut buffer = [0; 1024 * 5];
+        while let Ok(_) = audio_file.read(&mut buffer).await {
+            // send to server
+            sender
+                .try_send(StreamingRecognizeRequest {
+                    streaming_request: Some(StreamingRequest::AudioContent(
+                        BytesMut::from(buffer.as_slice()).freeze(),
+                    )),
+                })
+                .unwrap();
+            debug!("added a buffer to the sender queue");
+        }
+    })
+    .await?;
+
+    debug!("waiting for responses...");
+    // continuous receiving the transcribed response
+    while let Some(response) = stream.message().await? {
+        let mut num_results = 0;
+        for res in &response.results {
+            num_results = num_results + 1;
+            info!("Result {} {{", num_results);
+            if let Some(rec) = res.alternatives.first() {
+                info!("\tTranscription: {}", rec.transcript);
+                for word_info in &rec.words {
+                    // let start_time: WordTimestamp = word_info.start_time.into();
+                    let start_time = word_info.start_time.as_ref().unwrap();
+                    let end_time = word_info.end_time.as_ref().unwrap();
+                    info!(
+                        "\t - {}: [{}.{} - {}.{}]",
+                        word_info.word,
+                        start_time.seconds,
+                        start_time.nanos,
+                        end_time.seconds,
+                        end_time.nanos
+                    );
+                }
+            }
+            info!("}}");
+        }
+    }
+
+    Ok(())
+}