Uses 521K of libraries. Click here for Pure Java version (17494L/112K).
1 | sclass OpusMachine implements IF0_Int, AutoCloseable {
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2 | macro dprint { if (debug) printVars } bool debug;
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3 | |
4 | InputStream in; |
5 | new ByteArraysPartialInputStream buffer; |
6 | new ArraysShortStream sampleStream; |
7 | OpusFromStream opusDecoder; |
8 | int channels = 1; |
9 | int primaryBufSize = 65536; |
10 | int minBytesPreloaded; |
11 | |
12 | long samplesSeen() { ret sampleStream.endOfQueue(); }
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13 | |
14 | *(InputStream *in) {}
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15 | |
16 | void init() ctex {
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17 | if (opusDecoder != null) ret; |
18 | opusDecoder = new OpusFromStream(buffer, channels); |
19 | dprint("OpusMachine", +in);
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20 | preload(); |
21 | } |
22 | |
23 | close { dispose in; }
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24 | |
25 | void preload {
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26 | while (in != null && buffer.available() < minBytesPreloaded) |
27 | if (!fillBuffer()) |
28 | ret; |
29 | } |
30 | |
31 | bool pullFromDecoder() ctex {
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32 | dprint("pullFromDecoder");
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33 | while ping (true) {
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34 | short[] samples; |
35 | if ((samples = opusDecoder.nextSamples()) != null) {
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36 | dprint("Got " + nSamples(samples));
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37 | ret true with sampleStream.add(samples); |
38 | } |
39 | |
40 | if (!pullFromSource()) false; // end of stuff |
41 | // we got new material from source, decode again |
42 | } |
43 | } |
44 | |
45 | bool pullFromSource() {
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46 | dprint("pullFromSource");
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47 | ret fillBuffer(); |
48 | } |
49 | |
50 | swappable bool fillBuffer() {
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51 | if (in != null) try {
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52 | byte[] buf = new[primaryBufSize]; |
53 | int n = in.read(buf); |
54 | if (n > 0) {
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55 | dprint("Got " + nBytes(n));
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56 | buffer.write(takeFirst(buf, n)); |
57 | true; |
58 | } |
59 | } catch print {
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60 | dispose in; |
61 | } |
62 | false; |
63 | } |
64 | |
65 | // get next sample (pull mode) |
66 | public int get aka nextSample() ctex {
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67 | init(); |
68 | int sample; |
69 | while ping ((sample = sampleStream.read()) == sampleStream.noElement()) {
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70 | if (!pullFromDecoder()) |
71 | ret sample; |
72 | } |
73 | ret sample; |
74 | } |
75 | |
76 | CloseableShortIterator sampleIterator() {
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77 | ret new OpusMachineIterator(this); |
78 | } |
79 | } |
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| Snippet ID: | #1033017 |
| Snippet name: | OpusMachine |
| Eternal ID of this version: | #1033017/27 |
| Text MD5: | b45f310e45df68b390529aee8b27f294 |
| Transpilation MD5: | fc8f985c56fc869bb92ef347db121d36 |
| Author: | stefan |
| Category: | javax / opus |
| Type: | JavaX fragment (include) |
| Public (visible to everyone): | Yes |
| Archived (hidden from active list): | No |
| Created/modified: | 2021-10-11 18:24:49 |
| Source code size: | 1929 bytes / 79 lines |
| Pitched / IR pitched: | No / No |
| Views / Downloads: | 228 / 425 |
| Version history: | 26 change(s) |
| Referenced in: | [show references] |