54 lines
1.2 KiB
Go
54 lines
1.2 KiB
Go
package transcode_test
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import (
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"bytes"
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"io"
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"net/http"
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"net/http/httptest"
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"os/exec"
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"testing"
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"time"
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"github.com/stretchr/testify/require"
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"go.senan.xyz/gonic/transcode"
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)
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// TestTranscode starts a web server that transcodes a 5s FLAC file to PCM audio. A client
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// consumes the result over a 5 second period.
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func TestTranscode(t *testing.T) {
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t.Parallel()
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if _, err := exec.LookPath("ffmpeg"); err != nil {
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t.Skip("ffmpeg not in PATH")
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}
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tr := transcode.NewFFmpegTranscoder()
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server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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require.NoError(t, tr.Transcode(r.Context(), transcode.PCM16le, "testdata/5s.flac", w))
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f, ok := w.(http.Flusher)
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require.True(t, ok)
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f.Flush()
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}))
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defer server.Close()
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resp, err := server.Client().Get(server.URL)
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require.NoError(t, err)
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defer resp.Body.Close()
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const sampleRate, bytesPerSample, numChannels = 48_000, 2, 2
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const bytesPerSec = sampleRate * bytesPerSample * numChannels
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var buf bytes.Buffer
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for {
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n, err := io.Copy(&buf, io.LimitReader(resp.Body, bytesPerSec))
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require.NoError(t, err)
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if n == 0 {
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break
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}
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time.Sleep(1 * time.Second)
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}
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// we should have 5 seconds of PCM data
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require.Equal(t, 5*bytesPerSec, buf.Len())
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}
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