Added software resample context

software_resample_context_test.go

@@ -0,0 +1,45 @@
+package astiav
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestSoftwareResampleContext(t *testing.T) {
+	src := AllocSoftwareResampleContext()
+	defer src.Free()
+
+	f1, err := globalHelper.inputLastFrame("video.mp4", MediaTypeAudio, nil)
+	require.NoError(t, err)
+
+	f2 := AllocFrame()
+	defer f2.Free()
+	f2.SetChannelLayout(ChannelLayoutMono)
+	f2.SetNbSamples(300)
+	f2.SetSampleFormat(SampleFormatS16)
+	f2.SetSampleRate(24000)
+	require.NoError(t, f2.AllocBuffer(0))
+	require.NoError(t, f2.AllocSamples(0))
+
+	for _, v := range []struct {
+		expectedDelay     int64
+		expectedNbSamples int
+		f                 *Frame
+	}{
+		{
+			expectedDelay:     212,
+			expectedNbSamples: 300,
+			f:                 f1,
+		},
+		{
+			expectedDelay:     17,
+			expectedNbSamples: 212,
+		},
+		{expectedDelay: 17},
+	} {
+		require.NoError(t, src.ConvertFrame(v.f, f2))
+		require.Equal(t, v.expectedNbSamples, f2.NbSamples())
+		require.Equal(t, v.expectedDelay, src.Delay(int64(f2.SampleRate())))
+	}
+}