chore: establish local platform baseline

2026-08-26 06:41:54 +08:00
commit 29bdf4900f
575 changed files with 95644 additions and 0 deletions
@@ -0,0 +1,38 @@
+package media
+
+import (
+	"encoding/binary"
+	"testing"
+)
+
+func TestValidateAudioWAVPCM16(t *testing.T) {
+	content := syntheticWAV(8000, 1, 800)
+	if code := validateAudio("wav_pcm_s16le", 100, content); code != "" {
+		t.Fatalf("valid WAV rejected with %s", code)
+	}
+	if code := validateAudio("wav_pcm_s16le", 101, content); code != "DURATION_MISMATCH" {
+		t.Fatalf("duration mismatch code = %s", code)
+	}
+	if code := validateAudio("opus", 100, content); code != "CODEC_VALIDATION_UNAVAILABLE" {
+		t.Fatalf("unsupported codec code = %s", code)
+	}
+}
+
+func syntheticWAV(sampleRate uint32, channels uint16, samples int) []byte {
+	dataSize := samples * int(channels) * 2
+	content := make([]byte, 44+dataSize)
+	copy(content[0:4], "RIFF")
+	binary.LittleEndian.PutUint32(content[4:8], uint32(len(content)-8))
+	copy(content[8:12], "WAVE")
+	copy(content[12:16], "fmt ")
+	binary.LittleEndian.PutUint32(content[16:20], 16)
+	binary.LittleEndian.PutUint16(content[20:22], 1)
+	binary.LittleEndian.PutUint16(content[22:24], channels)
+	binary.LittleEndian.PutUint32(content[24:28], sampleRate)
+	binary.LittleEndian.PutUint32(content[28:32], sampleRate*uint32(channels)*2)
+	binary.LittleEndian.PutUint16(content[32:34], channels*2)
+	binary.LittleEndian.PutUint16(content[34:36], 16)
+	copy(content[36:40], "data")
+	binary.LittleEndian.PutUint32(content[40:44], uint32(dataSize))
+	return content
+}