kunitoki/VelociLoops | Build 25340660593 | src/velociloops.cpp | Coveralls

25

inline int32_t clampInt32(int64_t v)

43,070,488✔

27

    if (v > std::numeric_limits<int32_t>::max())

43,070,488✔

30

    if (v < std::numeric_limits<int32_t>::min())

43,070,488✔

33

    return static_cast<int32_t>(v);

43,070,488✔

36

inline int32_t addInt32(int32_t a, int32_t b)

18,171,940✔

38

    return clampInt32(static_cast<int64_t>(a) + static_cast<int64_t>(b));

18,171,940✔

41

inline int32_t subInt32(int32_t a, int32_t b)

24,898,548✔

43

    return clampInt32(static_cast<int64_t>(a) - static_cast<int64_t>(b));

24,898,548✔

62

    void init(const uint8_t* data, size_t size)

90✔

64

        const size_t words = size / 4;

90✔

65

        buf.resize(words);

90✔

67

        for (size_t i = 0; i < words; ++i)

2,678,472✔

69

            const size_t b = i * 4;

2,678,382✔

70

            buf[i] = ((uint32_t)data[b] << 24) | ((uint32_t)data[b + 1] << 16) | ((uint32_t)data[b + 2] << 8) | (uint32_t)data[b + 3];

2,678,382✔

73

        inputPtr = buf.data();

90✔

74

        endPtr = buf.data() + buf.size();

90✔

75

        currentWord = 0;

90✔

76

        bitsLeft = 0;

90✔

77

90✔

79

    bool decompressMono(uint32_t frameCount, int32_t* out, int32_t bitDepth)

77✔

81

        if (!out || frameCount == 0)

77✔

84

        int32_t d0 = ch[0].deltas[0] * 2, d1 = ch[0].deltas[1] * 2, d2 = ch[0].deltas[2] * 2, d3 = ch[0].deltas[3] * 2, d4 = ch[0].deltas[4] * 2;

77✔

86

        uint32_t a0 = ch[0].averages[0], a1 = ch[0].averages[1], a2 = ch[0].averages[2], a3 = ch[0].averages[3], a4 = ch[0].averages[4];

77✔

88

        uint32_t j = 2;

77✔

89

        int32_t rbits = 0;

77✔

91

        uint32_t cw = currentWord;

77✔

92

        int32_t bl = bitsLeft;

77✔

93

        const uint32_t* inp = inputPtr;

77✔

94

        bool eof = false;

77✔

96

        for (uint32_t f = 0; f < frameCount && !eof; ++f)

9,042,993✔

98

            uint32_t minAvg = a0;

9,042,916✔

99

            int minIdx = 0;

9,042,916✔

101

            if (a1 < minAvg)

9,042,916✔

103

                minAvg = a1;

8,435,265✔

104

                minIdx = 1;

8,435,265✔

107

            if (a2 < minAvg)

9,042,916✔

109

                minAvg = a2;

3,873,454✔

110

                minIdx = 2;

3,873,454✔

113

            if (a3 < minAvg)

9,042,916✔

115

                minAvg = a3;

2,367,280✔

116

                minIdx = 3;

2,367,280✔

119

            if (a4 < minAvg)

9,042,916✔

121

                minAvg = a4;

1,505,454✔

122

                minIdx = 4;

1,505,454✔

125

            uint32_t step = ((minAvg * 3u) + 36u) >> 7;

9,042,916✔

126

            uint32_t prefixSum = 0;

9,042,916✔

127

            int zerosWin = 7;

9,042,916✔

131

                bool bit = readBit(cw, bl, inp, eof);

16,827,779✔

133

                if (eof)

16,827,779✔

136

                if (bit)

16,827,779✔

137

                    break;

9,042,916✔

139

                if (step > 0 && prefixSum > 0xFFFFFFFFu - step)

7,784,863✔

145

                prefixSum += step;

7,784,863✔

146

                if (--zerosWin == 0)

7,784,863✔

148

                    step <<= 2;

49,191✔

149

                    zerosWin = 7;

49,191✔

151

7,784,863✔

153

            if (eof)

9,042,916✔

156

            adjustJRbits(step, j, rbits);

9,042,916✔

158

            uint32_t rem = (rbits > 0) ? readBits(rbits, cw, bl, inp, eof) : 0;

9,042,916✔

159

            if (eof)

9,042,916✔

162

            const int64_t thresh = static_cast<int64_t>(j) - static_cast<int64_t>(step);

9,042,916✔

163

            if (static_cast<int64_t>(rem) - thresh >= 0)

9,042,916✔

165

                const uint32_t extra = readBits(1, cw, bl, inp, eof);

4,408,233✔

167

                if (eof)

4,408,233✔

170

                rem = rem * 2u - static_cast<uint32_t>(thresh) + extra;

4,408,233✔

173

            const uint32_t codeVal = rem + prefixSum;

9,042,916✔

174

            const int32_t signed2x = -(int32_t)(codeVal & 1u) ^ (int32_t)codeVal;

9,042,916✔

175

            const int32_t s2x = applyPredictor(minIdx, signed2x, d0, d1, d2, d3, d4);

9,042,916✔

176

            out[f] = clampSample(s2x >> 1, bitDepth);

9,042,916✔

177

            updateAverages(a0, a1, a2, a3, a4, d0, d1, d2, d3, d4);

9,042,916✔

180

        ch[0].deltas[0] = d0 >> 1;

77✔

181

        ch[0].deltas[1] = d1 >> 1;

77✔

182

        ch[0].deltas[2] = d2 >> 1;

77✔

183

        ch[0].deltas[3] = d3 >> 1;

77✔

184

        ch[0].deltas[4] = d4 >> 1;

77✔

185

        ch[0].averages[0] = a0;

77✔

186

        ch[0].averages[1] = a1;

77✔

187

        ch[0].averages[2] = a2;

77✔

188

        ch[0].averages[3] = a3;

77✔

189

        ch[0].averages[4] = a4;

77✔

190

        currentWord = cw;

77✔

191

        bitsLeft = bl;

77✔

192

        inputPtr = inp;

77✔

193

        return !eof;

77✔

196

    bool decompressStereo(uint32_t frameCount, int32_t* out, int32_t bitDepth)

13✔

198

        if (!out || frameCount == 0)

13✔

203

        for (int c = 0; c < 2; ++c)

39✔

205

            for (int i = 0; i < 5; ++i)

156✔

207

                d[c][i] = ch[c].deltas[i] * 2;

130✔

208

                a[c][i] = ch[c].averages[i];

130✔

212

        uint32_t j[2] = {2, 2};

13✔

213

        int32_t rbits[2] = {0, 0};

13✔

215

        uint32_t cw = currentWord;

13✔

216

        int32_t bl = bitsLeft;

13✔

217

        const uint32_t* inp = inputPtr;

13✔

218

        bool eof = false;

13✔

220

        for (uint32_t f = 0; f < frameCount && !eof; ++f)

862,366✔

222

            int32_t ch2x[2] = {0, 0};

862,353✔

223

            for (int c = 0; c < 2 && !eof; ++c)

2,587,059✔

225

                uint32_t minAvg = a[c][0];

1,724,706✔

226

                int minIdx = 0;

1,724,706✔

227

                if (a[c][1] < minAvg)

1,724,706✔

229

                    minAvg = a[c][1];

1,277,134✔

230

                    minIdx = 1;

1,277,134✔

233

                if (a[c][2] < minAvg)

1,724,706✔

235

                    minAvg = a[c][2];

452,099✔

236

                    minIdx = 2;

452,099✔

239

                if (a[c][3] < minAvg)

1,724,706✔

241

                    minAvg = a[c][3];

134,524✔

242

                    minIdx = 3;

134,524✔

245

                if (a[c][4] < minAvg)

1,724,706✔

247

                    minAvg = a[c][4];

126,522✔

248

                    minIdx = 4;

126,522✔

251

                uint32_t step = ((minAvg * 3u) + 36u) >> 7;

1,724,706✔

252

                uint32_t prefixSum = 0;

1,724,706✔

253

                int zerosWin = 7;

1,724,706✔

257

                    bool bit = readBit(cw, bl, inp, eof);

2,937,765✔

259

                    if (eof)

2,937,765✔

262

                    if (bit)

2,937,765✔

263

                        break;

1,724,706✔

265

                    if (step > 0 && prefixSum > 0xFFFFFFFFu - step)

1,213,059✔

271

                    prefixSum += step;

1,213,059✔

272

                    if (--zerosWin == 0)

1,213,059✔

274

                        step <<= 2;

1,125✔

275

                        zerosWin = 7;

1,125✔

277

1,213,059✔

279

                if (eof)

1,724,706✔

282

                adjustJRbits(step, j[c], rbits[c]);

1,724,706✔

284

                uint32_t rem = (rbits[c] > 0) ? readBits(rbits[c], cw, bl, inp, eof) : 0;

1,724,706✔

285

                if (eof)

1,724,706✔

288

                const int64_t thresh = static_cast<int64_t>(j[c]) - static_cast<int64_t>(step);

1,724,706✔

289

                if (static_cast<int64_t>(rem) - thresh >= 0)

1,724,706✔

291

                    const uint32_t extra = readBits(1, cw, bl, inp, eof);

700,489✔

293

                    if (eof)

700,489✔

296

                    rem = rem * 2u - static_cast<uint32_t>(thresh) + extra;

700,489✔

299

                const uint32_t codeVal = rem + prefixSum;

1,724,706✔

300

                const int32_t signed2x = -(int32_t)(codeVal & 1u) ^ (int32_t)codeVal;

1,724,706✔

301

                ch2x[c] = applyPredictor(minIdx, signed2x, d[c][0], d[c][1], d[c][2], d[c][3], d[c][4]);

1,724,706✔

302

                updateAverages(a[c][0], a[c][1], a[c][2], a[c][3], a[c][4], d[c][0], d[c][1], d[c][2], d[c][3], d[c][4]);

1,724,706✔

305

            if (eof)

862,353✔

308

            out[f * 2 + 0] = clampSample(ch2x[0] >> 1, bitDepth);

862,353✔

309

            out[f * 2 + 1] = clampSample(((int64_t)ch2x[0] + (int64_t)ch2x[1]) >> 1, bitDepth);

862,353✔

312

        for (int c = 0; c < 2; ++c)

39✔

314

            for (int i = 0; i < 5; ++i)

156✔

316

                ch[c].deltas[i] = d[c][i] >> 1;

130✔

317

                ch[c].averages[i] = a[c][i];

130✔

320

        currentWord = cw;

13✔

321

        bitsLeft = bl;

13✔

322

        inputPtr = inp;

13✔

323

        return !eof;

13✔

327

    static int32_t clampSample(int64_t v, int32_t bitDepth)

10,767,622✔

329

        const int32_t maxSample = bitDepth == 24 ? 8388607 : 32767;

10,767,622✔

330

        const int32_t minSample = bitDepth == 24 ? -8388608 : -32768;

10,767,622✔

332

        if (v > maxSample)

10,767,622✔

335

        if (v < minSample)

10,767,622✔

338

        return (int32_t)v;

10,767,622✔

341

    bool readBit(uint32_t& cw, int32_t& bl, const uint32_t*& inp, bool& eof)

19,765,544✔

343

        const int32_t blBefore = bl--;

19,765,544✔

344

        if (blBefore - 1 < 0)

19,765,544✔

346

            if (inp >= endPtr)

621,351✔

352

            cw = *inp++;

621,351✔

353

            bl = 0x1f;

621,351✔

356

        const bool bit = (int32_t)cw < 0;

19,765,544✔

357

        cw <<= 1;

19,765,544✔

358

        return bit;

19,765,544✔

361

    uint32_t readBits(int n, uint32_t& cw, int32_t& bl, const uint32_t*& inp, bool& eof)

15,039,191✔

363

        if (n <= 0 || n > 31)

15,039,191✔

369

        uint32_t result = cw >> (32 - n);

15,039,191✔

370

        cw <<= n;

15,039,191✔

372

        const int32_t blBefore = bl;

15,039,191✔

373

        bl -= n;

15,039,191✔

375

        if (blBefore - n < 0)

15,039,191✔

377

            if (inp >= endPtr)

2,056,982✔

383

            const uint32_t next = *inp++;

2,056,982✔

384

            bl += 32;

2,056,982✔

385

            result |= next >> bl;

2,056,982✔

386

            cw = next << (32 - bl);

2,056,982✔

389

        return result;

15,039,191✔

392

    static void adjustJRbits(uint32_t step, uint32_t& j, int32_t& rbits)

10,767,622✔

394

        if (step < j)

10,767,622✔

396

            for (uint32_t jt = j >> 1; step < jt; jt >>= 1)

10,801,553✔

398

                j = jt;

191,635✔

399

                --rbits;

191,635✔

404

            while (step >= j)

349,842✔

406

                const uint32_t prev = j;

192,138✔

408

                j <<= 1;

192,138✔

409

                ++rbits;

192,138✔

411

                if (j <= prev)

192,138✔

418

10,767,622✔

420

    static int32_t applyPredictor(int idx, int32_t s2x, int32_t& d0, int32_t& d1, int32_t& d2, int32_t& d3, int32_t& d4)

10,767,622✔

422

        switch (idx)

10,767,622✔

424

            case 0:

1,055,222✔

426

                const int32_t t0 = subInt32(s2x, d0), t1 = subInt32(t0, d1), t2 = subInt32(t1, d2);

1,055,222✔

427

                d4 = subInt32(t2, d3);

1,055,222✔

428

                d3 = t2;

1,055,222✔

429

                d2 = t1;

1,055,222✔

430

                d1 = t0;

1,055,222✔

431

                d0 = s2x;

1,055,222✔

432

                return s2x;

1,055,222✔

435

            case 1:

5,386,705✔

437

                const int32_t t1 = subInt32(s2x, d1), t2 = subInt32(t1, d2), nd0 = addInt32(d0, s2x);

5,386,705✔

438

                d4 = subInt32(t2, d3);

5,386,705✔

439

                d3 = t2;

5,386,705✔

440

                d2 = t1;

5,386,705✔

441

                d1 = s2x;

5,386,705✔

442

                d0 = nd0;

5,386,705✔

443

                return nd0;

5,386,705✔

446

            case 2:

1,823,826✔

448

                const int32_t nd1 = addInt32(d1, s2x), nd0 = addInt32(d0, nd1), t = subInt32(s2x, d2);

1,823,826✔

449

                d4 = subInt32(t, d3);

1,823,826✔

450

                d3 = t;

1,823,826✔

451

                d2 = s2x;

1,823,826✔

452

                d1 = nd1;

1,823,826✔

453

                d0 = nd0;

1,823,826✔

454

                return nd0;

1,823,826✔

457

            case 3:

869,893✔

459

                const int32_t nd2 = addInt32(d2, s2x), nd1 = addInt32(d1, nd2), nd0 = addInt32(d0, nd1);

869,893✔

460

                d4 = subInt32(s2x, d3);

869,893✔

461

                d3 = s2x;

869,893✔

462

                d2 = nd2;

869,893✔

463

                d1 = nd1;

869,893✔

464

                d0 = nd0;

869,893✔

465

                return nd0;

869,893✔

468

            case 4:

1,631,976✔

470

                const int32_t nd3 = addInt32(d3, s2x), nd2 = addInt32(d2, nd3), nd1 = addInt32(d1, nd2), nd0 = addInt32(d0, nd1);

1,631,976✔

471

                d4 = s2x;

1,631,976✔

472

                d3 = nd3;

1,631,976✔

473

                d2 = nd2;

1,631,976✔

474

                d1 = nd1;

1,631,976✔

475

                d0 = nd0;

1,631,976✔

476

                return nd0;

1,631,976✔

483

    static void updateAverages(uint32_t& a0, uint32_t& a1, uint32_t& a2, uint32_t& a3, uint32_t& a4, int32_t d0, int32_t d1, int32_t d2, int32_t d3, int32_t d4)

10,767,622✔

485

        auto mag = [](int32_t v) -> uint32_t

53,838,110✔

487

            return (uint32_t)(v ^ (v >> 31));

53,838,110✔

490

        a0 = a0 + mag(d0) - (a0 >> 5);

10,767,622✔

491

        a1 = a1 + mag(d1) - (a1 >> 5);

10,767,622✔

492

        a2 = a2 + mag(d2) - (a2 >> 5);

10,767,622✔

493

        a3 = a3 + mag(d3) - (a3 >> 5);

10,767,622✔

494

        a4 = a4 + mag(d4) - (a4 >> 5);

10,767,622✔

495

10,767,622✔

501

    void writeBit(bool bit)

96,812,128✔

503

        if (bit)

96,812,128✔

504

            currentWord |= (uint32_t)1u << (31 - bitCount);

50,124,810✔

505

        if (++bitCount == 32)

96,812,128✔

506

            flushWord();

3,025,316✔

507

96,812,128✔

509

    void writeBits(uint32_t value, int count)

11,193,023✔

511

        for (int i = count - 1; i >= 0; --i)

79,438,526✔

512

            writeBit(((value >> i) & 1u) != 0);

68,245,503✔

513

11,193,023✔

515

    std::vector<uint8_t> finish()

116✔

517

        if (bitCount > 0)

116✔

518

            flushWord();

110✔

520

        return bytes;

116✔

528

    void flushWord()

3,025,426✔

530

        bytes.push_back((uint8_t)(currentWord >> 24));

3,025,426✔

531

        bytes.push_back((uint8_t)(currentWord >> 16));

3,025,426✔

532

        bytes.push_back((uint8_t)(currentWord >> 8));

3,025,426✔

533

        bytes.push_back((uint8_t)currentWord);

3,025,426✔

534

        currentWord = 0;

3,025,426✔

535

        bitCount = 0;

3,025,426✔

536

3,025,426✔

544

    std::vector<uint8_t> compressMono(const int32_t* in, uint32_t frameCount)

103✔

546

        reset();

103✔

548

        VLBitWriter bw;

103✔

549

        int32_t d[5] = {};

103✔

550

        uint32_t a[5] = {2560, 2560, 2560, 2560, 2560};

103✔

551

        uint32_t j = 2;

103✔

552

        int32_t rbits = 0;

103✔

554

        for (uint32_t f = 0; f < frameCount; ++f)

11,102,791✔

555

            encodeChannel(in[f] * 2, d, a, j, rbits, bw);

11,102,688✔

557

        return bw.finish();

206✔

558

103✔

560

    std::vector<uint8_t> compressStereo(const int32_t* in, uint32_t frameCount)

13✔

562

        reset();

13✔

564

        VLBitWriter bw;

13✔

565

        int32_t d[2][5] = {};

13✔

566

        uint32_t a[2][5] = {{2560, 2560, 2560, 2560, 2560}, {2560, 2560, 2560, 2560, 2560}};

13✔

567

        uint32_t j[2] = {2, 2};

13✔

568

        int32_t rbits[2] = {0, 0};

13✔

570

        for (uint32_t f = 0; f < frameCount; ++f)

838,011✔

572

            const int32_t left2x = in[(size_t)f * 2] * 2;

837,998✔

573

            const int32_t right2x = in[(size_t)f * 2 + 1] * 2;

837,998✔

574

            encodeChannel(left2x, d[0], a[0], j[0], rbits[0], bw);

837,998✔

575

            encodeChannel(right2x - left2x, d[1], a[1], j[1], rbits[1], bw);

837,998✔

578

        return bw.finish();

26✔

579

13✔

582

    void reset()

116✔

584

        for (auto& c : ch)

348✔

586

            std::fill(c.deltas, c.deltas + 5, 0);

232✔

587

            std::fill(c.averages, c.averages + 5, 2560);

232✔

589

116✔

591

    static uint32_t toCodeValue(int32_t signed2x)

12,778,684✔

593

        if (signed2x >= 0)

12,778,684✔

594

            return (uint32_t)signed2x;

7,247,474✔

596

        return (uint32_t)(-signed2x - 1);

5,531,210✔

599

    static int minAverageIndex(const uint32_t a[5])

12,778,684✔

601

        int idx = 0;

12,778,684✔

603

        for (int i = 1; i < 5; ++i)

63,893,420✔

605

            if (a[i] < a[idx])

51,114,736✔

606

                idx = i;

20,550,229✔

609

        return idx;

12,778,684✔

612

    static int32_t predictorResidual(int idx, int32_t sample2x, const int32_t d[5])

12,778,684✔

614

        switch (idx)

12,778,684✔

616

            case 0: return sample2x;

1,816,958✔

618

            case 1: return sample2x - d[0];

6,045,332✔

620

            case 2: return sample2x - d[0] - d[1];

2,053,928✔

622

            case 3: return sample2x - d[0] - d[1] - d[2];

1,052,599✔

624

            case 4: return sample2x - d[0] - d[1] - d[2] - d[3];

1,809,867✔

630

    static int32_t applyPredictor(int idx, int32_t s2x, int32_t d[5])

12,778,684✔

632

        switch (idx)

12,778,684✔

634

            case 0:

1,816,958✔

636

                const int32_t t0 = s2x - d[0], t1 = t0 - d[1], t2 = t1 - d[2];

1,816,958✔

637

                d[4] = t2 - d[3];

1,816,958✔

638

                d[3] = t2;

1,816,958✔

639

                d[2] = t1;

1,816,958✔

640

                d[1] = t0;

1,816,958✔

641

                d[0] = s2x;

1,816,958✔

642

                return s2x;

1,816,958✔

645

            case 1:

6,045,332✔

647

                const int32_t t1 = s2x - d[1], t2 = t1 - d[2], nd0 = d[0] + s2x;

6,045,332✔

648

                d[4] = t2 - d[3];

6,045,332✔

649

                d[3] = t2;

6,045,332✔

650

                d[2] = t1;

6,045,332✔

651

                d[1] = s2x;

6,045,332✔

652

                d[0] = nd0;

6,045,332✔

653

                return nd0;

6,045,332✔

656

            case 2:

2,053,928✔

658

                const int32_t nd1 = d[1] + s2x, nd0 = d[0] + nd1, t = s2x - d[2];

2,053,928✔

659

                d[4] = t - d[3];

2,053,928✔

660

                d[3] = t;

2,053,928✔

661

                d[2] = s2x;

2,053,928✔

662

                d[1] = nd1;

2,053,928✔

663

                d[0] = nd0;

2,053,928✔

664

                return nd0;

2,053,928✔

667

            case 3:

1,052,599✔

669

                const int32_t nd2 = d[2] + s2x, nd1 = d[1] + nd2, nd0 = d[0] + nd1;

1,052,599✔

670

                d[4] = s2x - d[3];

1,052,599✔

671

                d[3] = s2x;

1,052,599✔

672

                d[2] = nd2;

1,052,599✔

673

                d[1] = nd1;

1,052,599✔

674

                d[0] = nd0;

1,052,599✔

675

                return nd0;

1,052,599✔

678

            case 4:

1,809,867✔

680

                const int32_t nd3 = d[3] + s2x, nd2 = d[2] + nd3, nd1 = d[1] + nd2, nd0 = d[0] + nd1;

1,809,867✔

681

                d[4] = s2x;

1,809,867✔

682

                d[3] = nd3;

1,809,867✔

683

                d[2] = nd2;

1,809,867✔

684

                d[1] = nd1;

1,809,867✔

685

                d[0] = nd0;

1,809,867✔

686

                return nd0;

1,809,867✔

693

    static void updateAverages(uint32_t a[5], const int32_t d[5])

12,778,684✔

695

        auto mag = [](int32_t v) -> uint32_t

63,893,420✔

697

            return (uint32_t)(v ^ (v >> 31));

63,893,420✔

700

        for (int i = 0; i < 5; ++i)

76,672,104✔

702

            a[i] = a[i] + mag(d[i]) - (a[i] >> 5);

63,893,420✔

704

12,778,684✔

706

    static void adjustJRbits(uint32_t step, uint32_t& j, int32_t& rbits)

22,935,373✔

708

        if (step < j)

22,935,373✔

710

            for (uint32_t jt = j >> 1; step < jt; jt >>= 1)

23,371,772✔

712

                j = jt;

819,278✔

713

                --rbits;

819,278✔

718

            while (step >= j)

878,476✔

720

                const uint32_t prev = j;

495,597✔

722

                j <<= 1;

495,597✔

723

                ++rbits;

495,597✔

725

                if (j <= prev)

495,597✔

732

22,935,373✔

734

    static bool encodeRemainder(uint32_t raw, uint32_t step, uint32_t j, int32_t rbits, uint32_t& remBits, bool& hasExtra, bool& extraBit)

22,935,373✔

736

        if (rbits < 0 || rbits > 31)

22,935,373✔

739

        const uint32_t limit = rbits == 31 ? 0x80000000u : (1u << rbits);

22,935,373✔

740

        const int32_t threshSigned = (int32_t)j - (int32_t)step;

22,935,373✔

741

        if (threshSigned < 0)

22,935,373✔

744

        const uint32_t thresh = (uint32_t)threshSigned;

22,935,373✔

746

        if (raw < thresh)

22,935,373✔

748

            if (raw >= limit)

7,147,432✔

751

            remBits = raw;

7,147,432✔

752

            hasExtra = false;

7,147,432✔

753

            extraBit = false;

7,147,432✔

754

            return true;

7,147,432✔

757

        const uint32_t folded = raw + thresh;

15,787,941✔

758

        remBits = folded >> 1;

15,787,941✔

759

        hasExtra = true;

15,787,941✔

760

        extraBit = (folded & 1u) != 0;

15,787,941✔

761

        return remBits >= thresh && remBits < limit;

15,787,941✔

764

    static void writeCodeValue(uint32_t codeVal, uint32_t baseStep, uint32_t& j, int32_t& rbits, VLBitWriter& bw)

12,778,684✔

766

        uint32_t prefixSum = 0;

12,778,684✔

767

        uint32_t step = baseStep;

12,778,684✔

768

        int zerosWin = 7;

12,778,684✔

770

        for (uint32_t zeros = 0; zeros < 0x100000; ++zeros)

22,935,373✔

772

            if (codeVal >= prefixSum)

22,935,373✔

774

                uint32_t trialJ = j;

22,935,373✔

775

                int32_t trialRbits = rbits;

22,935,373✔

776

                adjustJRbits(step, trialJ, trialRbits);

22,935,373✔

778

                uint32_t remBits = 0;

22,935,373✔

779

                bool hasExtra = false;

22,935,373✔

780

                bool extraBit = false;

22,935,373✔

781

                if (encodeRemainder(codeVal - prefixSum, step, trialJ, trialRbits, remBits, hasExtra, extraBit))

22,935,373✔

783

                    for (uint32_t i = 0; i < zeros; ++i)

22,935,373✔

784

                        bw.writeBit(false);

10,156,689✔

786

                    bw.writeBit(true);

12,778,684✔

788

                    if (trialRbits > 0)

12,778,684✔

789

                        bw.writeBits(remBits, trialRbits);

11,193,023✔

791

                    if (hasExtra)

12,778,684✔

792

                        bw.writeBit(extraBit);

5,631,252✔

794

                    j = trialJ;

12,778,684✔

795

                    rbits = trialRbits;

12,778,684✔

796

                    return;

12,778,684✔

800

            if (baseStep == 0)

10,156,689✔

803

            if (UINT32_MAX - prefixSum < step)

10,156,689✔

806

            prefixSum += step;

10,156,689✔

807

            if (prefixSum > codeVal && step != 0)

10,156,689✔

810

            if (--zerosWin == 0)

10,156,689✔

812

                step <<= 2;

60,852✔

813

                zerosWin = 7;

60,852✔

820

    static void encodeChannel(int32_t sample2x, int32_t d[5], uint32_t a[5], uint32_t& j, int32_t& rbits, VLBitWriter& bw)

12,778,684✔

822

        const int idx = minAverageIndex(a);

12,778,684✔

823

        const uint32_t baseStep = ((a[idx] * 3u) + 36u) >> 7;

12,778,684✔

824

        const int32_t residual = predictorResidual(idx, sample2x, d);

12,778,684✔

825

        writeCodeValue(toCodeValue(residual), baseStep, j, rbits, bw);

12,778,684✔

826

        applyPredictor(idx, residual, d);

12,778,684✔

827

        updateAverages(a, d);

12,778,684✔

828

12,778,684✔

836

    size_t beginChunk(const char id[4])

5,057✔

838

        const size_t start = data.size();

5,057✔

839

        data.insert(data.end(), id, id + 4);

5,057✔

840

        put32(0);

5,057✔

841

        return start;

5,057✔

844

    size_t beginCat(const char type[4])

348✔

846

        const size_t start = beginChunk("CAT ");

348✔

847

        data.insert(data.end(), type, type + 4);

348✔

848

        return start;

348✔

851

    void endChunk(size_t start)

5,057✔

853

        const size_t payloadStart = start + 8;

5,057✔

854

        const uint32_t size = (uint32_t)(data.size() - payloadStart);

5,057✔

856

        data[start + 4] = (uint8_t)(size >> 24);

5,057✔

857

        data[start + 5] = (uint8_t)(size >> 16);

5,057✔

858

        data[start + 6] = (uint8_t)(size >> 8);

5,057✔

859

        data[start + 7] = (uint8_t)size;

5,057✔

861

        if (data.size() & 1u)

5,057✔

862

            data.push_back(0);

4,350✔

863

5,057✔

865

    void put8(uint8_t v)

5,626✔

867

        data.push_back(v);

5,626✔

868

5,626✔

870

    void put16(uint16_t v)

4,582✔

872

        data.push_back((uint8_t)(v >> 8));

4,582✔

873

        data.push_back((uint8_t)v);

4,582✔

874

4,582✔

876

    void put32(uint32_t v)

13,580✔

878

        data.push_back((uint8_t)(v >> 24));

13,580✔

879

        data.push_back((uint8_t)(v >> 16));

13,580✔

880

        data.push_back((uint8_t)(v >> 8));

13,580✔

881

        data.push_back((uint8_t)v);

13,580✔

882

13,580✔

884

    void putBytes(const uint8_t* p, size_t n)

510✔

886

        data.insert(data.end(), p, p + n);

510✔

887

510✔

917

int32_t sliceFlags(const VLSliceEntry& s)

2,177✔

919

    int32_t flags = 0;

2,177✔

920

    if (s.state == kSliceMuted)

2,177✔

921

        flags |= VL_SLICE_FLAG_MUTED;

2✔

922

    else if (s.state == kSliceLocked)

2,175✔

923

        flags |= VL_SLICE_FLAG_LOCKED;

10✔

924

    if (s.selected_flag)

2,177✔

925

        flags |= VL_SLICE_FLAG_SELECTED;

67✔

926

    if (s.marker)

2,177✔

928

    if (s.synthetic_leading)

2,177✔

929

        flags |= VL_SLICE_FLAG_SYNTHETIC;

7✔

930

    return flags;

2,177✔

933

VLError applySliceFlags(VLSliceEntry& s, int32_t flags, int32_t analysisPoints)

6✔

937

    if (flags & ~kKnownFlags)

6✔

938

        return VL_ERROR_INVALID_ARG;

1✔

940

    if ((flags & VL_SLICE_FLAG_MUTED) && (flags & VL_SLICE_FLAG_LOCKED))

5✔

941

        return VL_ERROR_INVALID_ARG;

1✔

943

    if (flags & VL_SLICE_FLAG_LOCKED)

4✔

944

        s.state = kSliceLocked;

1✔

945

    else if (flags & VL_SLICE_FLAG_MUTED)

3✔

946

        s.state = kSliceMuted;

1✔

948

        s.state = kSliceNormal;

2✔

950

    s.selected_flag = (flags & VL_SLICE_FLAG_SELECTED) ? 1 : 0;

4✔

952

    if (analysisPoints >= 0)

4✔

954

        if (analysisPoints > 0x7fff)

3✔

955

            return VL_ERROR_INVALID_ARG;

1✔

956

        s.points = (uint16_t)analysisPoints;

2✔

959

    return VL_OK;

3✔

965

    VLHeapArray() = default;

244✔

983

    [[nodiscard]] bool assign(std::size_t n, T val) noexcept

100✔

985

        if (n == 0)

100✔

992

        T* raw = new (std::nothrow) T[n];

100✔

993

        if (!raw)

100✔

996

        std::fill_n(raw, n, val);

100✔

997

        ptr_.reset(raw);

100✔

998

        size_ = n;

100✔

1000

        return true;

100✔

1003

    [[nodiscard]] bool resize(std::size_t n, T val) noexcept

55✔

1005

        if (n == size_)

55✔

1008

        if (n == 0)

55✔

1015

        T* raw = new (std::nothrow) T[n];

55✔

1016

        if (!raw)

55✔

1019

        const std::size_t keep = std::min(size_, n);

55✔

1020

        if (keep)

55✔

1021

            std::memcpy(raw, ptr_.get(), keep * sizeof(T));

5✔

1023

        if (n > size_)

55✔

1024

            std::fill_n(raw + size_, n - size_, val);

55✔

1026

        ptr_.reset(raw);

55✔

1027

        size_ = n;

55✔

1028

        return true;

55✔

1031

    T& operator[](std::size_t i) noexcept

7,372,441✔

1033

        assert(i < size_);

7,372,441✔

1034

        return ptr_[i];

7,372,441✔

1037

    const T& operator[](std::size_t i) const noexcept

9,661,894✔

1039

        assert(i < size_);

9,661,894✔

1040

        return ptr_[i];

9,661,894✔

1043

    T* data() noexcept

116✔

1045

        return ptr_.get();

116✔

1053

    std::size_t size() const noexcept

9,664,234✔

1055

        return size_;

9,664,234✔

1058

    bool empty() const noexcept

1,674✔

1060

        return size_ == 0;

1,674✔

1063

    static constexpr std::size_t max_size() noexcept

1,112✔

1065

        return std::numeric_limits<std::size_t>::max() / sizeof(T);

1,112✔

1100

    bool loadFromBuffer(const char* buf, size_t size)

193✔

1102

        fileData.assign((const uint8_t*)buf, (const uint8_t*)buf + size);

193✔

1104

        info.channels = 1;

193✔

1105

        info.sample_rate = 44100;

193✔

1106

        info.slice_count = 0;

193✔

1107

        info.tempo = 120000;

193✔

1108

        info.original_tempo = 120000;

193✔

1109

        info.ppq_length = 61440;

193✔

1110

        info.time_sig_num = 4;

193✔

1111

        info.time_sig_den = 4;

193✔

1112

        info.bit_depth = 16;

193✔

1113

        info.total_frames = 0;

193✔

1114

        info.loop_start = 0;

193✔

1115

        info.loop_end = 0;

193✔

1116

        info.processing_gain = processingGain;

193✔

1117

        info.transient_enabled = transientEnabled ? 1 : 0;

193✔

1118

        info.transient_attack = transientAttack;

193✔

1119

        info.transient_decay = transientDecay;

193✔

1120

        info.transient_stretch = transientStretch;

193✔

1121

        info.silence_selected = silenceSelected ? 1 : 0;

193✔

1122

        analysisSensitivity = 0;

193✔

1123

        gateSensitivity = 0;

193✔

1124

        headerValid = true;

193✔

1125

        loadError = VL_OK;

193✔

1126

        loadedFromFile = false;

193✔

1127

        globBars = 1;

193✔

1128

        globBeats = 0;

193✔

1130

        std::memset(&creator, 0, sizeof(creator));

193✔

1132

        if (fileData.size() < 12)

193✔

1133

            return fail(VL_ERROR_INVALID_SIZE);

1✔

1135

        if (fileData[0] == 'F' && fileData[1] == 'O' && fileData[2] == 'R' && fileData[3] == 'M' && fileData[8] == 'A' && fileData[9] == 'I' &&

240✔

1136

            fileData[10] == 'F' && fileData[11] == 'F')

240✔

1138

            const bool ok = loadLegacyAIFF();

48✔

1139

            if (ok)

48✔

1140

                loadedFromFile = true;

10✔

1141

            return ok;

48✔

1144

        if (fileData[0] != 'C' || fileData[1] != 'A' || fileData[2] != 'T' || fileData[3] != ' ')

144✔

1145

            return fail(VL_ERROR_FILE_CORRUPT);

16✔

1147

        size_t dwopOffset = 0, dwopSize = 0;

128✔

1148

        bool hasDWOP = false;

128✔

1150

        parseIFF(8 + 4, fileData.size(), dwopOffset, dwopSize, hasDWOP);

128✔

1151

        if (loadError != VL_OK)

128✔

1152

            return false;

26✔

1154

        finalizeSlices();

102✔

1156

        if (!headerValid)

102✔

1159

        if (!hasDWOP || dwopSize == 0)

102✔

1160

            return fail(VL_ERROR_FILE_CORRUPT);

4✔

1162

        if (dwopOffset + dwopSize > fileData.size())

98✔

1165

        if (totalFrames == 0)

98✔

1166

            return fail(VL_ERROR_INVALID_SIZE);

8✔

1170

        if (totalFrames > kMaxTotalFrames)

90✔

1173

        const size_t pcmElements = (size_t)totalFrames * (size_t)info.channels;

90✔

1175

        if (!pcm.assign(pcmElements, 0))

90✔

1178

        VLDWOPDecompressor dec;

90✔

1179

        dec.init(&fileData[dwopOffset], dwopSize);

90✔

1181

        uint32_t done = 0;

90✔

1182

        bool ok = true;

90✔

1183

        while (done < totalFrames && ok)

180✔

1185

            const uint32_t chunk = std::min<uint32_t>(0x100000, totalFrames - done);

90✔

1187

            if (info.channels == 1)

90✔

1188

                ok = dec.decompressMono(chunk, &pcm[done], info.bit_depth);

77✔

1190

                ok = dec.decompressStereo(chunk, &pcm[(size_t)done * 2], info.bit_depth);

13✔

1192

            done += chunk;

90✔

1195

        if (!ok)

90✔

1198

        finalizeRenderedLengths();

90✔

1199

        loadedFromFile = true;

90✔

1200

        return true;

90✔

1201

90✔

1204

    bool fail(VLError error)

95✔

1206

        if (loadError == VL_OK)

95✔

1207

            loadError = error;

93✔

1208

        return false;

95✔

1211

    static uint32_t be32(const uint8_t* p)

60,047✔

1213

        return ((uint32_t)p[0] << 24) | ((uint32_t)p[1] << 16) | ((uint32_t)p[2] << 8) | p[3];

60,047✔

1216

    static uint16_t be16(const uint8_t* p)

771,518✔

1218

        return (uint16_t)(((uint16_t)p[0] << 8) | p[1]);

771,518✔

1221

    static int32_t readAIFFExtendedRate(const uint8_t* p)

48✔

1223

        const uint16_t expon = be16(p);

48✔

1224

        uint64_t mant = 0;

48✔

1225

        for (int i = 0; i < 8; ++i)

432✔

1226

            mant = (mant << 8) | p[2 + i];

384✔

1228

        if (expon == 0 || mant == 0)

48✔

1229

            return 0;

4✔

1231

        const int sign = (expon & 0x8000u) ? -1 : 1;

44✔

1232

        const int exp = (int)(expon & 0x7fffu) - 16383;

44✔

1233

        const long double value = (long double)sign * (long double)mant * std::ldexp((long double)1.0, exp - 63);

44✔

1234

        if (value <= 0.0L || value > (long double)std::numeric_limits<int32_t>::max())

44✔

1237

        return (int32_t)std::lround((double)value);

44✔

1240

    static int32_t readSignedSampleBE(const uint8_t* p, uint16_t bits)

964,919✔

1242

        switch (bits)

964,919✔

1244

            case 8: return (int32_t)(int8_t)p[0] * 256;

91,528✔

1245

            case 16: return (int16_t)be16(p);

766,609✔

1246

            case 24:

61,018✔

1248

                int32_t v = ((int32_t)p[0] << 16) | ((int32_t)p[1] << 8) | (int32_t)p[2];

61,018✔

1249

                if (v & 0x800000)

61,018✔

1250

                    v |= ~0xffffff;

32,554✔

1251

                return v;

61,018✔

1253

            case 32:

45,764✔

1255

                int32_t v = (int32_t)be32(p);

45,764✔

1256

                return v >> 16;

45,764✔

1262

    bool parseLegacyTempo(const uint8_t* d, uint32_t sz, bool appIsReCy)

44✔

1264

        const uint32_t tempoOffset = appIsReCy ? 14u : 16u;

44✔

1265

        if (sz < tempoOffset + 4u)

44✔

1266

            return false;

4✔

1268

        const uint32_t v = be32(d + tempoOffset);

40✔

1269

        if (v < 20000u || v > 450000u)

40✔

1270

            return false;

4✔

1272

        info.tempo = (int32_t)v;

36✔

1273

        info.original_tempo = (int32_t)v;

36✔

1274

        return true;

36✔

1277

    static uint16_t legacyReCycleFilterPoints(uint16_t sensitivity)

9✔

1279

        const uint32_t sens = std::min<uint32_t>(sensitivity, 1000u);

9✔

1280

        const uint32_t visibleRange = (sens * 0x7fffu + 999u) / 1000u;

9✔

1281

        return (uint16_t)(0x7fffu - visibleRange);

9✔

1284

    bool parseLegacyReCycleSlices(const uint8_t* d, uint32_t sz, std::vector<VLSliceEntry>& out)

41✔

1286

        if (sz < 4u + 0xa0u)

41✔

1287

            return false;

32✔

1289

        const uint8_t* binary = d + 4;

9✔

1290

        const uint32_t binarySize = sz - 4u;

9✔

1291

        if (be32(binary) != 0xd1daded0u)

9✔

1294

        const uint16_t sensitivity = be16(binary + 0x14);

9✔

1295

        const uint16_t filterPoints = legacyReCycleFilterPoints(sensitivity);

9✔

1296

        const uint16_t storedCount = be16(binary + 0x9e);

9✔

1297

        if (storedCount == 0 || storedCount > 1000)

9✔

1300

        if (binarySize < 0xa0u + (uint32_t)storedCount * 8u)

9✔

1303

        std::vector<VLSliceEntry> parsed;

9✔

1304

        parsed.reserve(storedCount);

9✔

1305

        for (uint16_t i = 0; i < storedCount; ++i)

186✔

1307

            const uint8_t* rec = binary + 0xa0u + (uint32_t)i * 8u;

177✔

1308

            const uint8_t state = rec[0] & 0x7f;

177✔

1309

            const bool selected = (rec[0] & 0x80) != 0;

177✔

1310

            const uint32_t start = ((uint32_t)rec[1] << 24) | ((uint32_t)rec[2] << 16) | ((uint32_t)rec[3] << 8) | rec[4];

177✔

1311

            const uint16_t points = be16(rec + 6);

177✔

1313

            if (!selected && (state != 0 || points <= filterPoints))

177✔

1314

                continue;

107✔

1316

            VLSliceEntry s;

70✔

1317

            s.sample_start = start;

70✔

1318

            s.sample_length = 1;

70✔

1319

            s.points = points;

70✔

1320

            s.selected_flag = selected ? 1 : 0;

70✔

1321

            if (state == 1)

70✔

1322

                s.state = kSliceLocked;

7✔

1323

            else if (state == 2)

63✔

1326

                s.state = kSliceNormal;

63✔

1327

            parsed.push_back(s);

70✔

1330

        if (parsed.empty())

9✔

1331

            return false;

2✔

1333

        out = std::move(parsed);

7✔

1334

        return true;

7✔

1335

9✔

1337

    bool parseLegacyREXSlices(const uint8_t* d, uint32_t sz, std::vector<VLSliceEntry>& out, uint32_t& ppqLength,

3✔

1340

        if (sz < 4u + 0x3f8u)

3✔

1343

        const uint8_t* binary = d + 4;

3✔

1344

        const uint32_t binarySize = sz - 4u;

3✔

1345

        if (be32(binary) != 0xd1d1d1dau)

3✔

1348

        const uint32_t storedPpqLength = be32(binary + 6);

3✔

1349

        if (storedPpqLength == 0 || storedPpqLength > std::numeric_limits<uint32_t>::max() / 16u)

3✔

1352

        const uint16_t storedCount = be16(binary + 0x0a);

3✔

1353

        if (storedCount == 0 || storedCount > 1000)

3✔

1356

        if (binarySize < 0x3f8u + (uint32_t)storedCount * 12u)

3✔

1359

        std::vector<VLSliceEntry> parsed;

3✔

1360

        std::vector<uint32_t> ppqPositions;

3✔

1361

        std::vector<uint32_t> sourceLengths;

3✔

1362

        parsed.reserve(storedCount);

3✔

1363

        ppqPositions.reserve(storedCount);

3✔

1364

        sourceLengths.reserve(storedCount);

3✔

1365

        for (uint16_t i = 0; i < storedCount; ++i)

33✔

1367

            const uint8_t* rec = binary + 0x3f8u + (uint32_t)i * 12u;

30✔

1368

            const uint32_t start = be32(rec);

30✔

1369

            const uint32_t length = be32(rec + 4);

30✔

1370

            const uint32_t ppq16 = be32(rec + 8);

30✔

1371

            if (ppq16 > storedPpqLength || ppq16 > std::numeric_limits<uint32_t>::max() / 16u)

30✔

1373

            if (length == 0)

30✔

1376

            VLSliceEntry s;

30✔

1377

            s.ppq_pos = ppq16 * 16u;

30✔

1378

            s.sample_start = start;

30✔

1379

            s.sample_length = length;

30✔

1380

            s.points = 0x7fff;

30✔

1381

            s.selected_flag = i == 0 ? 1 : 0;

30✔

1382

            s.state = kSliceNormal;

30✔

1383

            parsed.push_back(s);

30✔

1384

            ppqPositions.push_back(ppq16);

30✔

1385

            sourceLengths.push_back(length);

30✔

1388

        if (parsed.empty())

3✔

1391

        double samplesPerPpq = 0.0;

3✔

1392

        for (size_t i = 0; i < ppqPositions.size(); ++i)

33✔

1394

            uint32_t nextPpq = storedPpqLength;

30✔

1395

            for (size_t j = i + 1; j < ppqPositions.size(); ++j)

30✔

1397

                if (ppqPositions[j] != ppqPositions[i])

27✔

1399

                    nextPpq = ppqPositions[j];

27✔

1400

                    break;

27✔

1404

            if (nextPpq <= ppqPositions[i])

30✔

1407

            const uint32_t delta = nextPpq - ppqPositions[i];

30✔

1408

            samplesPerPpq = std::max(samplesPerPpq, (double)sourceLengths[i] / (double)delta);

30✔

1411

        if (samplesPerPpq <= 0.0)

3✔

1414

        ppqLength = storedPpqLength * 16u;

3✔

1415

        exportedFrameCount = (uint32_t)(samplesPerPpq * (double)storedPpqLength);

3✔

1416

        out = std::move(parsed);

3✔

1417

        return true;

3✔

1418

3✔

1420

    bool loadLegacyAIFF()

48✔

1422

        uint16_t channels = 0;

48✔

1423

        uint32_t frameCount = 0;

48✔

1424

        uint16_t bits = 0;

48✔

1425

        int32_t sampleRate = 0;

48✔

1426

        bool haveCOMM = false;

48✔

1427

        bool haveSSND = false;

48✔

1428

        size_t ssndOffset = 0;

48✔

1429

        size_t ssndSize = 0;

48✔

1430

        uint32_t markerLoopStart = 0;

48✔

1431

        uint32_t markerLoopEnd = 0;

48✔

1432

        bool haveLoopStart = false;

48✔

1433

        bool haveLoopEnd = false;

48✔

1434

        bool sawLegacyApp = false;

48✔

1435

        bool sawLegacyTempo = false;

48✔

1436

        bool legacyLoopLengthSet = true;

48✔

1437

        std::vector<VLSliceEntry> legacySlices;

48✔

1438

        bool legacySlicesHaveExplicitPpq = false;

48✔

1439

        uint32_t legacyRexPpqLength = 0;

48✔

1440

        uint32_t legacyRexExportedFrameCount = 0;

48✔

1442

        const size_t formEnd = std::min(fileData.size(), (size_t)be32(&fileData[4]) + 8u);

48✔

1443

        size_t off = 12;

48✔

1444

        while (off + 8 <= formEnd && off + 8 <= fileData.size())

212✔

1446

            char id[5] = {};

164✔

1447

            std::memcpy(id, &fileData[off], 4);

164✔

1448

            const uint32_t sz = be32(&fileData[off + 4]);

164✔

1449

            const size_t payload = off + 8;

164✔

1450

            if (payload + sz > fileData.size())

164✔

1453

            if (std::strcmp(id, "COMM") == 0 && sz >= 18)

164✔

1455

                channels = be16(&fileData[payload]);

48✔

1456

                frameCount = be32(&fileData[payload + 2]);

48✔

1457

                bits = be16(&fileData[payload + 6]);

48✔

1458

                sampleRate = readAIFFExtendedRate(&fileData[payload + 8]);

48✔

1459

                haveCOMM = true;

48✔

1461

            else if (std::strcmp(id, "SSND") == 0 && sz >= 8)

116✔

1463

                const uint32_t dataOffset = be32(&fileData[payload]);

48✔

1464

                const size_t dataStart = payload + 8u + (size_t)dataOffset;

48✔

1465

                if (dataStart <= payload + sz && dataStart <= fileData.size())

48✔

1467

                    ssndOffset = dataStart;

48✔

1468

                    ssndSize = (payload + sz) - dataStart;

48✔

1469

                    haveSSND = true;

48✔

1471

48✔

1472

            else if (std::strcmp(id, "MARK") == 0 && sz >= 2)

68✔

1474

                uint32_t pos = 2;

12✔

1475

                const uint16_t count = be16(&fileData[payload]);

12✔

1476

                for (uint16_t i = 0; i < count && pos + 7 <= sz; ++i)

36✔

1478

                    const uint32_t markerPos = be32(&fileData[payload + pos + 2]);

24✔

1479

                    const uint8_t nameLen = fileData[payload + pos + 6];

24✔

1480

                    pos += 7;

24✔

1481

                    if (pos + nameLen > sz)

24✔

1484

                    const char* name = (const char*)&fileData[payload + pos];

24✔

1485

                    const bool isLoopStart = nameLen == 10 && std::memcmp(name, "Loop start", 10) == 0;

24✔

1486

                    const bool isLoopEnd = nameLen == 8 && std::memcmp(name, "Loop end", 8) == 0;

24✔

1487

                    if (isLoopStart)

24✔

1489

                        markerLoopStart = markerPos;

12✔

1490

                        haveLoopStart = true;

12✔

1492

                    else if (isLoopEnd)

12✔

1494

                        markerLoopEnd = markerPos;

12✔

1495

                        haveLoopEnd = true;

12✔

1498

                    pos += nameLen + (((nameLen + 1u) & 1u) ? 1u : 0u);

24✔

1500

12✔

1501

            else if (std::strcmp(id, "APPL") == 0 && sz >= 8)

56✔

1503

                const bool appIsREX = std::memcmp(&fileData[payload], "REX ", 4) == 0;

44✔

1504

                const bool appIsReCy = std::memcmp(&fileData[payload], "ReCy", 4) == 0;

44✔

1505

                if (appIsREX || appIsReCy)

44✔

1507

                    sawLegacyApp = true;

44✔

1508

                    if (appIsReCy)

44✔

1510

                        legacyLoopLengthSet = sz > 12 && fileData[payload + 12] != 0;

41✔

1511

                        parseLegacyReCycleSlices(&fileData[payload], sz, legacySlices);

41✔

1513

                    else if (appIsREX)

3✔

1516

                            parseLegacyREXSlices(&fileData[payload], sz, legacySlices, legacyRexPpqLength, legacyRexExportedFrameCount);

3✔

1518

                    sawLegacyTempo = parseLegacyTempo(&fileData[payload], sz, appIsReCy) || sawLegacyTempo;

44✔

1522

            off = payload + sz;

164✔

1523

            if (off & 1)

164✔

1527

        if (!sawLegacyApp)

48✔

1528

            return fail(VL_ERROR_FILE_CORRUPT);

4✔

1530

        if (!sawLegacyTempo)

44✔

1531

            return fail(VL_ERROR_INVALID_TEMPO);

8✔

1533

        if (!legacyLoopLengthSet)

36✔

1534

            return fail(VL_ERROR_ZERO_LOOP_LENGTH);

6✔

1536

        if (!haveCOMM || !haveSSND || channels < 1 || channels > 2 || frameCount == 0 || sampleRate <= 0)

30✔

1538

            if (frameCount == 0)

12✔

1539

                return fail(VL_ERROR_INVALID_SIZE);

4✔

1540

            if (sampleRate <= 0)

8✔

1541

                return fail(VL_ERROR_INVALID_SAMPLE_RATE);

4✔

1542

            return fail(VL_ERROR_FILE_CORRUPT);

4✔

1545

        if (bits != 8 && bits != 16 && bits != 24 && bits != 32)

18✔

1546

            return fail(VL_ERROR_FILE_CORRUPT);

4✔

1548

        const size_t bytesPerSample = (size_t)((bits + 7u) / 8u);

14✔

1549

        const size_t frameBytes = bytesPerSample * (size_t)channels;

14✔

1550

        if (frameBytes == 0)

14✔

1553

        const uint32_t availableFrames = (uint32_t)std::min<size_t>(frameCount, ssndSize / frameBytes);

14✔

1554

        if (availableFrames == 0)

14✔

1555

            return fail(VL_ERROR_INVALID_SIZE);

4✔

1557

        if (!pcm.assign((size_t)availableFrames * channels, 0))

10✔

1560

        const uint8_t* src = &fileData[ssndOffset];

10✔

1561

        for (uint32_t frame = 0; frame < availableFrames; ++frame)

964,929✔

1563

            for (uint16_t ch = 0; ch < channels; ++ch)

1,929,838✔

1565

                const size_t sample = ((size_t)frame * channels + ch) * bytesPerSample;

964,919✔

1566

                pcm[(size_t)frame * channels + ch] = readSignedSampleBE(src + sample, bits);

964,919✔

1570

        totalFrames = availableFrames;

10✔

1571

        loopStart = haveLoopStart && markerLoopStart < availableFrames ? markerLoopStart : 0;

10✔

1572

        loopEnd = haveLoopEnd && markerLoopEnd > loopStart && markerLoopEnd <= availableFrames ? markerLoopEnd : availableFrames;

10✔

1574

        info.channels = channels;

10✔

1575

        info.sample_rate = sampleRate;

10✔

1576

        info.slice_count = 1;

10✔

1577

        info.ppq_length = legacyRexPpqLength > 0 ? (int32_t)legacyRexPpqLength : kREXPPQ * 4;

10✔

1578

        info.time_sig_num = 4;

10✔

1579

        info.time_sig_den = 4;

10✔

1580

        info.bit_depth = bits;

10✔

1581

        info.total_frames = (int32_t)totalFrames;

10✔

1582

        info.loop_start = (int32_t)loopStart;

10✔

1583

        info.loop_end = (int32_t)loopEnd;

10✔

1584

        info.processing_gain = processingGain;

10✔

1585

        info.transient_enabled = 0;

10✔

1586

        info.transient_attack = 0;

10✔

1587

        info.transient_decay = 1023;

10✔

1588

        info.transient_stretch = 0;

10✔

1589

        info.silence_selected = 0;

10✔

1590

        transientEnabled = false;

10✔

1591

        transientAttack = 0;

10✔

1592

        transientDecay = 1023;

10✔

1593

        transientStretch = 0;

10✔

1595

        if (legacyRexExportedFrameCount > 0 && info.ppq_length > 0)

10✔

1597

            const double beats = (double)info.ppq_length / (double)kREXPPQ;

3✔

1598

            const double bpm = beats * 60.0 * (double)info.sample_rate / (double)legacyRexExportedFrameCount;

3✔

1599

            const int32_t derivedOriginalTempo = (int32_t)std::lround(bpm * 1000.0);

3✔

1600

            if (derivedOriginalTempo > 0)

3✔

1601

                info.original_tempo = derivedOriginalTempo;

3✔

1604

        if (!legacySlices.empty())

10✔

1606

            std::sort(legacySlices.begin(), legacySlices.end(),

10✔

1607

                      [](const VLSliceEntry& a, const VLSliceEntry& b)

180✔

1609

                          return a.sample_start < b.sample_start;

180✔

1611

            legacySlices.erase(std::unique(legacySlices.begin(), legacySlices.end(),

10✔

1612

                                           [](const VLSliceEntry& a, const VLSliceEntry& b)

90✔

1614

                                               return a.sample_start == b.sample_start;

90✔

1616

                               legacySlices.end());

10✔

1618

            const uint32_t sliceEnd = loopEnd > loopStart ? loopEnd : totalFrames;

10✔

1619

            for (size_t i = 0; i < legacySlices.size(); ++i)

110✔

1621

                const uint32_t next = i + 1 < legacySlices.size() ? legacySlices[i + 1].sample_start : sliceEnd;

100✔

1622

                if (!legacySlicesHaveExplicitPpq)

100✔

1623

                    legacySlices[i].sample_length = next > legacySlices[i].sample_start ? next - legacySlices[i].sample_start : 1u;

70✔

1626

            slices = std::move(legacySlices);

10✔

1627

            if (!legacySlicesHaveExplicitPpq)

10✔

1628

                finalizeSlices();

7✔

1630

                info.slice_count = (int32_t)slices.size();

3✔

1631

            finalizeRenderedLengths();

10✔

1647

        return true;

10✔

1648

48✔

1650

    void parseIFF(size_t start, size_t end, size_t& dwopOffset, size_t& dwopSize, bool& hasDWOP)

316✔

1652

        size_t off = start;

316✔

1653

        while (off + 8 < end && off + 8 < fileData.size())

5,305✔

1655

            char id[5] = {};

4,997✔

1656

            std::memcpy(id, &fileData[off], 4);

4,997✔

1657

            off += 4;

4,997✔

1659

            const uint32_t sz = be32(&fileData[off]);

4,997✔

1660

            off += 4;

4,997✔

1662

            if (off + sz > fileData.size())

4,997✔

1664

                fail(VL_ERROR_INVALID_SIZE);

8✔

1665

                break;

8✔

1668

            if (std::strcmp(id, "HEAD") == 0)

4,989✔

1669

                parseHEAD(&fileData[off], sz);

128✔

1671

            else if (std::strcmp(id, "CREI") == 0)

4,861✔

1672

                parseCREI(&fileData[off], sz);

9✔

1674

            else if (std::strcmp(id, "SINF") == 0)

4,852✔

1675

                parseSINF(&fileData[off], sz);

126✔

1677

            else if (std::strcmp(id, "GLOB") == 0)

4,726✔

1678

                parseGLOB(&fileData[off], sz);

128✔

1680

            else if (std::strcmp(id, "TRSH") == 0)

4,598✔

1681

                parseTRSH(&fileData[off], sz);

94✔

1683

            else if (std::strcmp(id, "RECY") == 0)

4,504✔

1684

                parseRECY(&fileData[off], sz);

94✔

1686

            else if (std::strcmp(id, "SLCE") == 0)

4,410✔

1687

                parseSLCE(&fileData[off], sz);

3,907✔

1689

            else if ((std::strcmp(id, "SDAT") == 0 || std::strcmp(id, "DWOP") == 0) && !hasDWOP)

503✔

1691

                dwopOffset = off;

118✔

1692

                dwopSize = sz;

118✔

1693

                hasDWOP = true;

118✔

1696

            else if (std::strcmp(id, "CAT ") == 0 && sz >= 4)

385✔

1698

                parseIFF(off + 4, off + sz, dwopOffset, dwopSize, hasDWOP);

188✔

1701

            off += sz;

4,989✔

1702

            if (off & 1)

4,989✔

1703

                ++off;

4,357✔

1705

316✔

1707

    void parseSINF(const uint8_t* d, uint32_t sz)

126✔

1709

        if (sz < 18)

126✔

1710

            return;

4✔

1712

        info.channels = d[0];

122✔

1713

        const uint8_t bd = d[1];

122✔

1714

        info.sample_rate = (int32_t)be32(d + 2);

122✔

1715

        totalFrames = be32(d + 6);

122✔

1716

        loopStart = be32(d + 10);

122✔

1717

        loopEnd = be32(d + 14);

122✔

1718

        info.total_frames = (int32_t)totalFrames;

122✔

1719

        info.loop_start = (int32_t)loopStart;

122✔

1720

        info.loop_end = (int32_t)loopEnd;

122✔

1722

        switch (bd)

122✔

1724

            case 1: info.bit_depth = 8; break;

1✔

1726

            case 3: info.bit_depth = 16; break;

112✔

1728

            case 5: info.bit_depth = 24; break;

7✔

1730

            case 7: info.bit_depth = 32; break;

1✔

1732

            default: info.bit_depth = 16; break;

1✔

1735

        const uint32_t frames = (loopEnd > loopStart) ? (loopEnd - loopStart) : totalFrames;

122✔

1736

        if (frames > 0 && info.sample_rate > 0 && info.ppq_length > 0)

122✔

1738

            const double beats = (double)info.ppq_length / (double)kREXPPQ;

118✔

1739

            const double bpm = beats * 60.0 * (double)info.sample_rate / (double)frames;

118✔

1741

            const int32_t t = (int32_t)std::lround(bpm * 1000.0);

118✔

1742

            if (t > 0)

118✔

1743

                info.original_tempo = t;

118✔

1746

        if (info.original_tempo == 0)

122✔

1749

        if (info.channels != 1 && info.channels != 2)

122✔

1753

    void parseHEAD(const uint8_t* d, uint32_t sz)

128✔

1755

        if (sz < 6 || be32(d) != 0x490cf18du)

128✔

1757

            headerValid = false;

4✔

1758

            fail(VL_ERROR_FILE_CORRUPT);

4✔

1759

            return;

4✔

1762

        if (d[4] != 0xbc)

124✔

1769

        if (d[5] > 0x03)

124✔

1771

            headerValid = false;

6✔

1772

            fail(VL_ERROR_FILE_TOO_NEW);

6✔

1776

    void parseGLOB(const uint8_t* d, uint32_t sz)

128✔

1778

        if (sz < 22)

128✔

1780

            fail(VL_ERROR_INVALID_SIZE);

6✔

1781

            return;

6✔

1784

        info.slice_count = (int32_t)be32(d);

122✔

1785

        globBars = be16(d + 4);

122✔

1786

        globBeats = d[6];

122✔

1787

        info.time_sig_num = d[7];

122✔

1788

        info.time_sig_den = d[8];

122✔

1789

        analysisSensitivity = d[9];

122✔

1790

        gateSensitivity = be16(d + 10);

122✔

1791

        const uint32_t tempo = be32(d + 16);

122✔

1792

        if (tempo < 20000u || tempo > 450000u)

122✔

1793

            fail(VL_ERROR_INVALID_TEMPO);

4✔

1794

        info.tempo = (int32_t)tempo;

122✔

1796

            const int32_t timeSigNum = info.time_sig_num > 0 ? info.time_sig_num : 4;

122✔

1797

            const int32_t totalBeats = (int32_t)globBars * timeSigNum + (int32_t)globBeats;

122✔

1798

            const int64_t ppqLen = totalBeats > 0 ? (int64_t)totalBeats * kREXPPQ : (int64_t)4 * kREXPPQ;

122✔

1799

            info.ppq_length = (int32_t)std::clamp(ppqLen, (int64_t)1, (int64_t)INT32_MAX);

122✔

1801

        processingGain = be16(d + 12);

122✔

1802

        silenceSelected = d[21] != 0;

122✔

1803

        info.processing_gain = processingGain;

122✔

1804

        info.silence_selected = silenceSelected ? 1 : 0;

122✔

1805

        loadedFromFile = true;

122✔

1808

    void parseCREI(const uint8_t* d, uint32_t sz)

9✔

1810

        uint32_t off = 0;

9✔

1811

        auto readString = [&](char* dst, size_t dstSize)

45✔

1813

            if (!dst || dstSize == 0)

45✔

1816

            dst[0] = '\0';

45✔

1817

            if (off + 4 > sz)

45✔

1818

                return;

4✔

1820

            const uint32_t n = be32(d + off);

41✔

1821

            off += 4;

41✔

1822

            if (off + n > sz)

41✔

1824

                off = sz;

1✔

1825

                return;

1✔

1828

            const size_t copy = std::min<size_t>(n, dstSize - 1);

40✔

1829

            if (copy)

40✔

1830

                std::memcpy(dst, d + off, copy);

33✔

1832

            dst[copy] = '\0';

40✔

1833

            off += n;

40✔

1834

};

9✔

1836

        readString(creator.name, sizeof(creator.name));

9✔

1837

        readString(creator.copyright, sizeof(creator.copyright));

9✔

1838

        readString(creator.url, sizeof(creator.url));

9✔

1839

        readString(creator.email, sizeof(creator.email));

9✔

1840

        readString(creator.free_text, sizeof(creator.free_text));

9✔

1841

9✔

1843

    void parseTRSH(const uint8_t* d, uint32_t sz)

94✔

1845

        if (sz < 7)

94✔

1848

        transientEnabled = d[0] != 0;

94✔

1849

        transientAttack = be16(d + 1);

94✔

1850

        transientDecay = be16(d + 3);

94✔

1851

        transientStretch = be16(d + 5);

94✔

1852

        info.transient_enabled = transientEnabled ? 1 : 0;

94✔

1853

        info.transient_attack = transientAttack;

94✔

1854

        info.transient_decay = transientDecay;

94✔

1855

        info.transient_stretch = transientStretch;

94✔

1858

    void parseRECY(const uint8_t* d, uint32_t sz)

94✔

1860

        if (sz < 12)

94✔

1863

        const int32_t t = (int32_t)be32(d + 8);

94✔

1864

        if (t > 0)

94✔

1865

            info.original_tempo = t;

91✔

1868

    void parseSLCE(const uint8_t* d, uint32_t sz)

3,907✔

1872

        if (slices.size() >= kMaxSlices)

3,907✔

1875

        if (sz < 10)

3,907✔

1878

        VLSliceEntry s;

3,907✔

1879

        s.sample_start = be32(d);

3,907✔

1880

        s.sample_length = be32(d + 4);

3,907✔

1881

        s.points = be16(d + 8);

3,907✔

1882

        s.marker = s.sample_length <= 1;

3,907✔

1884

        const uint8_t flags = sz > 10 ? d[10] : 0;

3,907✔

1885

        s.selected_flag = (flags & 0x04) ? 1 : 0;

3,907✔

1887

        if (flags & 0x02)

3,907✔

1888

            s.state = kSliceLocked;

9✔

1889

        else if (flags & 0x01)

3,898✔

1890

            s.state = kSliceMuted;

1✔

1892

            s.state = kSliceNormal;

3,897✔

1894

        slices.push_back(s);

3,907✔

1895

        info.slice_count = (int32_t)slices.size();

3,907✔

1898

    static uint16_t rex2FilterPoints(uint8_t sensitivity)

671✔

1900

        const uint32_t sens = std::min<uint32_t>(sensitivity, 99u);

671✔

1901

        const uint32_t visibleRange = (sens * 0x7fffu + 98u) / 99u;

671✔

1902

        return (uint16_t)(0x7fffu - visibleRange);

671✔

1905

    bool isVisibleSliceBoundary(const VLSliceEntry& s) const

3,851✔

1907

        if (s.sample_length > 1)

3,851✔

1908

            return true;

3,180✔

1910

        if (s.selected_flag || s.state != kSliceNormal)

671✔

1913

        return s.points > rex2FilterPoints(analysisSensitivity);

671✔

1916

    uint32_t defaultSliceEnd(uint32_t start) const

3,199✔

1918

        if (loopEnd > loopStart && start < loopEnd)

3,199✔

1919

            return loopEnd;

3,195✔

1921

        return totalFrames;

4✔

1924

    uint32_t gateLengthFrames() const

109✔

1926

        if (gateSensitivity == 0)

109✔

1927

            return 0;

60✔

1929

        const uint32_t sr = info.sample_rate > 0 ? (uint32_t)info.sample_rate : 44100u;

49✔

1930

        uint32_t frames = (uint32_t)(((uint64_t)gateSensitivity * sr + 4500u) / 9000u);

49✔

1931

        frames = std::max(1u, frames);

49✔

1933

        return std::max(1u, ((frames + 64u) / 128u) * 128u);

49✔

1936

    void finalizeSlices()

109✔

1938

        const uint32_t denom = (loopEnd > loopStart) ? (loopEnd - loopStart) : (totalFrames ? totalFrames : 1u);

109✔

1939

        const uint32_t gatedFrames = gateLengthFrames();

109✔

1941

        std::sort(slices.begin(), slices.end(),

109✔

1942

                  [](const VLSliceEntry& a, const VLSliceEntry& b)

26,920✔

1944

                      return a.sample_start < b.sample_start;

26,920✔

1947

        std::vector<VLSliceEntry> out;

109✔

1948

        for (auto s : slices)

4,062✔

1950

            if (loopEnd > loopStart && s.sample_start < totalFrames && s.sample_start >= loopEnd)

3,953✔

1951

                continue;

102✔

1953

            if (!isVisibleSliceBoundary(s))

3,851✔

1954

                continue;

652✔

1956

            const uint32_t rel = (s.sample_start > loopStart) ? (s.sample_start - loopStart) : 0;

3,199✔

1958

            s.ppq_pos = (uint32_t)(((uint64_t)rel * info.ppq_length + denom / 2) / denom);

3,199✔

1959

            s.marker = false;

3,199✔

1961

            out.push_back(s);

3,199✔

1964

        for (size_t i = 0; i < out.size(); ++i)

3,308✔

1966

            const uint32_t start = out[i].sample_start;

3,199✔

1967

            uint32_t next = defaultSliceEnd(start);

3,199✔

1968

            for (size_t j = i + 1; j < out.size(); ++j)

3,200✔

1970

                if (out[j].sample_start > start)

3,111✔

1972

                    next = out[j].sample_start;

3,110✔

1973

                    break;

3,110✔

1977

            const uint32_t derived = next > start ? next - start : 1u;

3,199✔

1978

            if (gateSensitivity == 0 || out[i].sample_length <= 1)

3,199✔

1980

                out[i].sample_length = derived;

1,837✔

1981

                if (gateSensitivity != 0 && gatedFrames > 0)

1,837✔

1984

            else if (derived > 1)

1,362✔

1986

                out[i].sample_length = std::min(out[i].sample_length, derived);

1,361✔

1989

            out[i].sample_length = std::max<uint32_t>(1u, out[i].sample_length);

3,199✔

1992

        if (!out.empty() && loopEnd > loopStart && out.front().sample_start > loopStart && out.front().sample_start <= totalFrames)

109✔

1994

            VLSliceEntry leading;

9✔

1995

            leading.ppq_pos = 0;

9✔

1996

            leading.sample_start = loopStart;

9✔

1997

            leading.sample_length = out.front().sample_start - loopStart;

9✔

1998

            leading.points = 0x7fff;

9✔

1999

            leading.selected_flag = 1;

9✔

2000

            leading.state = kSliceNormal;

9✔

2001

            leading.synthetic_leading = true;

9✔

2003

            out.insert(out.begin(), leading);

9✔

2006

        slices.swap(out);

109✔

2007

        info.slice_count = (int32_t)slices.size();

109✔

2008

109✔

2010

    uint32_t sourceEndForSlice(const VLSliceEntry& s) const

15,128✔

2012

        const uint32_t start = s.sample_start;

15,128✔

2013

        if (start >= totalFrames)

15,128✔

2014

            return start;

8✔

2016

        uint32_t frames = std::min(s.sample_length, totalFrames - start);

15,120✔

2017

        if (loopEnd > loopStart && start < loopEnd)

15,120✔

2018

            frames = std::min(frames, loopEnd - start);

14,008✔

2020

        return start + frames;

15,120✔

2031

    SegmentLoop findSegmentLoop(uint32_t start, uint32_t end) const

8,120✔

2033

        SegmentLoop r{start, end};

8,120✔

2035

        const uint32_t sr = info.sample_rate ? (uint32_t)info.sample_rate : 44100u;

8,120✔

2036

        const uint32_t srch = std::max(1u, (400u * sr) / 44100u);

8,120✔

2037

        const uint32_t mhl = std::max(1u, (20000u * sr) / 44100u);

8,120✔

2039

        if (end <= start || end - start < srch * 3u)

8,120✔

2040

            return r;

4,075✔

2042

        const uint32_t ch = std::max(1, info.channels);

4,045✔

2043

        auto leftAbs = [&](uint32_t f) -> int

3,002,638✔

2045

            const size_t i = (size_t)f * ch;

3,002,638✔

2046

            return i < pcm.size() ? std::abs((int)pcm[i]) : 0;

3,002,638✔

2047

};

4,045✔

2049

        uint32_t loopEnd = end - srch;

4,045✔

2050

        int peak = -1;

4,045✔

2051

        for (uint32_t i = 0, f = end - srch; i < srch && f > start; ++i, --f)

1,614,245✔

2053

            const int p = leftAbs(f);

1,610,200✔

2054

            if (p > peak)

1,610,200✔

2056

                peak = p;

79,198✔

2057

                loopEnd = f;

79,198✔

2061

        uint32_t hl = std::min((loopEnd - start) / 2u, mhl);

4,045✔

2062

        uint32_t ls = loopEnd - hl;

4,045✔

2063

        uint32_t loopStart = ls;

4,045✔

2064

        int lspeak = -1;

4,045✔

2065

        for (uint32_t i = 0, f = ls; i < srch && f >= start; ++i)

1,396,483✔

2067

            const int p = leftAbs(f);

1,392,438✔

2068

            if (p > lspeak)

1,392,438✔

2070

                lspeak = p;

59,870✔

2071

                loopStart = f;

59,870✔

2074

            if (f == 0)

1,392,438✔

2077

            --f;

1,392,438✔

2080

        r.start = std::clamp(loopStart, start, end - 1u);

4,045✔

2081

        r.end = std::clamp(loopEnd, r.start + 1u, end);

4,045✔

2083

        if (lspeak > 0 && peak > 0)

4,045✔

2084

            r.volumeCompensation = std::min(10.0f, (float)peak / (float)lspeak);

3,904✔

2086

        return r;

4,045✔

2090

    void cacheRenderLoop(VLSliceEntry& s) const

8,120✔

2092

        const uint32_t start = s.sample_start;

8,120✔

2093

        const uint32_t end = sourceEndForSlice(s);

8,120✔

2094

        const SegmentLoop loop = findSegmentLoop(start, end);

8,120✔

2095

        s.render_loop_start = loop.start;

8,120✔

2096

        s.render_loop_end = loop.end;

8,120✔

2097

        s.render_loop_volume_compensation = loop.volumeCompensation;

8,120✔

2098

8,120✔

2100

    uint32_t calcRenderedLength(const VLSliceEntry& s) const

7,008✔

2102

        const uint32_t start = s.sample_start;

7,008✔

2103

        const uint32_t end = sourceEndForSlice(s);

7,008✔

2105

        if (end <= start)

7,008✔

2106

            return 1u;

4✔

2108

        const uint32_t segLen = end - start;

7,004✔

2109

        if (!transientEnabled || transientStretch == 0)

7,004✔

2110

            return segLen;

3,328✔

2112

        const uint32_t loopE = (s.render_loop_end > start && s.render_loop_end <= end) ? s.render_loop_end : end;

3,676✔

2113

        const uint32_t stretchN = (uint32_t)transientStretch + 1u;

3,676✔

2114

        const uint32_t stretchT = (uint32_t)(((uint64_t)(loopE - start) * stretchN) / 100u);

3,676✔

2116

        return std::max(1u, segLen + stretchT);

3,676✔

2120

    void cacheSliceRender(VLSliceEntry& s) const

7,008✔

2122

        cacheRenderLoop(s);

7,008✔

2123

        s.rendered_length = calcRenderedLength(s);

7,008✔

2124

7,008✔

2126

    void cacheSliceLoop(VLSliceEntry& s) const

1,112✔

2128

        cacheRenderLoop(s);

1,112✔

2129

1,112✔

2131

    void finalizeRenderedLengths()

216✔

2133

        for (auto& s : slices)

7,224✔

2134

            cacheSliceRender(s);

7,008✔

2135

216✔

2138

int32_t storageBitDepth(int32_t bitDepth)

13,066,853✔

2140

    return bitDepth == 24 ? 24 : 16;

13,066,853✔

2143

int32_t floatToPCM(float s, int32_t bitDepth)

6,407,432✔

2145

    if (s > 1.0f)

6,407,432✔

2146

        s = 1.0f;

64✔

2148

    if (s < -1.0f)

6,407,432✔

2149

        s = -1.0f;

64✔

2151

    if (storageBitDepth(bitDepth) == 24)

6,407,432✔

2153

        const float scaled = s >= 0.0f ? s * 8388607.0f : s * 8388608.0f;

113,479✔

2154

        return (int32_t)std::lround(scaled);

113,479✔

2157

    const float scaled = s >= 0.0f ? s * 32767.0f : s * 32768.0f;

6,293,953✔

2158

    return (int32_t)std::lround(scaled);

6,293,953✔

2161

float pcmToFloat(int32_t sample, int32_t bitDepth)

6,659,256✔

2163

    return storageBitDepth(bitDepth) == 24 ? (float)sample / 8388608.0f : (float)sample / 32768.0f;

6,659,256✔

2166

uint8_t bitDepthCode(int32_t bitDepth)

116✔

2168

    switch (bitDepth)

116✔

2172

        case 16: return 3;

110✔

2174

        case 24: return 5;

6✔

2182

bool hasCreatorInfo(const VLCreatorInfo& c)

116✔

2184

    return c.name[0] || c.copyright[0] || c.url[0] || c.email[0] || c.free_text[0];

116✔

2187

void writeCStringChunkString(VLIFFWriter& w, const char* s)

55✔

2189

    const size_t n = s ? std::min<size_t>(std::strlen(s), 255) : 0;

55✔

2191

    w.put32((uint32_t)n);

55✔

2193

    if (n)

55✔

2194

        w.putBytes((const uint8_t*)s, n);

46✔

2195

55✔

2197

void writeSimpleChunk(VLIFFWriter& w, const char id[4], const std::vector<uint8_t>& payload)

116✔

2199

    const size_t c = w.beginChunk(id);

116✔

2201

    if (!payload.empty())

116✔

2202

        w.putBytes(payload.data(), payload.size());

116✔

2204

    w.endChunk(c);

116✔

2205

116✔

2207

uint32_t calcSampleStartFromPPQ(const VLFileImpl& impl, uint32_t ppq)

634✔

2209

    const VLFileInfo& info = impl.info;

634✔

2210

    if (info.ppq_length > 0 && info.loop_end > info.loop_start)

634✔

2212

        const uint32_t denom = (uint32_t)(info.loop_end - info.loop_start);

621✔

2213

        return (uint32_t)info.loop_start + (uint32_t)(((uint64_t)ppq * denom + (uint32_t)info.ppq_length / 2u) / (uint32_t)info.ppq_length);

621✔

2216

    const uint32_t tempo = info.tempo > 0 ? (uint32_t)info.tempo : 120000u;

13✔

2217

    const uint32_t sr = info.sample_rate > 0 ? (uint32_t)info.sample_rate : 44100u;

13✔

2218

    return (uint32_t)(((uint64_t)ppq * sr * 60000u + (uint64_t)tempo * VLFileImpl::kREXPPQ / 2u) / ((uint64_t)tempo * VLFileImpl::kREXPPQ));

13✔

2221

void normaliseInfoForSave(VLFileImpl& impl)

116✔

2223

    impl.info.channels = std::clamp(impl.info.channels, 1, 2);

116✔

2225

    if (impl.info.sample_rate <= 0)

116✔

2228

    if (impl.info.tempo <= 0)

116✔

2231

    if (impl.info.original_tempo <= 0)

116✔

2232

        impl.info.original_tempo = impl.info.tempo;

2✔

2234

    if (impl.info.time_sig_num <= 0)

116✔

2235

        impl.info.time_sig_num = 4;

2✔

2237

    if (impl.info.time_sig_den <= 0)

116✔

2238

        impl.info.time_sig_den = 4;

2✔

2240

    impl.info.bit_depth = storageBitDepth(impl.info.bit_depth);

116✔

2241

    impl.info.slice_count = (int32_t)impl.slices.size();

116✔

2243

    impl.totalFrames = (uint32_t)(impl.pcm.size() / (size_t)impl.info.channels);

116✔

2244

    impl.info.total_frames = (int32_t)impl.totalFrames;

116✔

2246

    if (impl.info.loop_start < 0 || (uint32_t)impl.info.loop_start >= impl.totalFrames)

116✔

2247

        impl.info.loop_start = 0;

1✔

2249

    if (impl.info.loop_end <= impl.info.loop_start || (uint32_t)impl.info.loop_end > impl.totalFrames)

116✔

2250

        impl.info.loop_end = (int32_t)impl.totalFrames;

1✔

2252

    impl.loopStart = (uint32_t)std::max(0, impl.info.loop_start);

116✔

2253

    impl.loopEnd = (uint32_t)std::max(impl.info.loop_start, impl.info.loop_end);

116✔

2255

    if (!impl.loadedFromFile && impl.analysisSensitivity == 0)

116✔

2256

        impl.analysisSensitivity = 99;

25✔

2258

    if (impl.info.ppq_length <= 0)

116✔

2260

        const uint32_t frames = impl.loopEnd > impl.loopStart ? impl.loopEnd - impl.loopStart : impl.totalFrames;

2✔

2262

        const double beats = frames > 0 ? ((double)frames * (double)impl.info.tempo) / (60000.0 * (double)impl.info.sample_rate) : 4.0;

2✔

2264

        impl.info.ppq_length = std::max(1, (int32_t)std::lround(beats * VLFileImpl::kREXPPQ));

2✔

2268

        const int32_t timeSigNum = impl.info.time_sig_num > 0 ? impl.info.time_sig_num : 4;

116✔

2269

        const int32_t totalBeats = std::max(1, (impl.info.ppq_length + VLFileImpl::kREXPPQ / 2) / VLFileImpl::kREXPPQ);

116✔

2270

        impl.globBars = (uint16_t)(totalBeats / timeSigNum);

116✔

2271

        impl.globBeats = (uint8_t)(totalBeats % timeSigNum);

116✔

2274

    impl.processingGain = (uint16_t)std::clamp(impl.info.processing_gain > 0 ? impl.info.processing_gain : 1000, 0, 1000);

116✔

2275

    impl.transientEnabled = impl.info.transient_enabled != 0;

116✔

2276

    impl.transientAttack = (uint16_t)std::clamp(impl.info.transient_attack, 0, 1023);

116✔

2277

    impl.transientDecay = (uint16_t)std::clamp(impl.info.transient_decay > 0 ? impl.info.transient_decay : 1023, 0, 1023);

116✔

2278

    impl.transientStretch = (uint16_t)std::clamp(impl.info.transient_stretch, 0, 100);

116✔

2279

    impl.silenceSelected = impl.info.silence_selected != 0;

116✔

2280

    impl.finalizeRenderedLengths();

116✔

2281

116✔

2283

std::vector<uint8_t> buildREX2File(VLFileImpl& impl)

116✔

2285

    normaliseInfoForSave(impl);

116✔

2287

    VLDWOPCompressor comp;

116✔

2289

        impl.info.channels == 2 ? comp.compressStereo(impl.pcm.data(), impl.totalFrames) : comp.compressMono(impl.pcm.data(), impl.totalFrames);

116✔

2291

    VLIFFWriter w;

116✔

2292

    const size_t root = w.beginCat("REX2");

116✔

2295

        const size_t c = w.beginChunk("HEAD");

116✔

2296

        const uint8_t head[] = {0x49, 0x0c, 0xf1, 0x8d, 0xbc, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

116✔

2298

        w.putBytes(head, sizeof(head));

116✔

2299

        w.endChunk(c);

116✔

2302

    if (hasCreatorInfo(impl.creator))

116✔

2304

        const size_t c = w.beginChunk("CREI");

11✔

2305

        writeCStringChunkString(w, impl.creator.name);

11✔

2306

        writeCStringChunkString(w, impl.creator.copyright);

11✔

2307

        writeCStringChunkString(w, impl.creator.url);

11✔

2308

        writeCStringChunkString(w, impl.creator.email);

11✔

2309

        writeCStringChunkString(w, impl.creator.free_text);

11✔

2310

        w.endChunk(c);

11✔

2314

        const size_t c = w.beginChunk("GLOB");

116✔

2315

        w.put32((uint32_t)impl.slices.size());

116✔

2316

        w.put16(impl.globBars);

116✔

2317

        w.put8(impl.globBeats);

116✔

2318

        w.put8((uint8_t)impl.info.time_sig_num);

116✔

2319

        w.put8((uint8_t)impl.info.time_sig_den);

116✔

2320

        w.put8(impl.analysisSensitivity);

116✔

2321

        const uint16_t gate = impl.slices.empty() ? impl.gateSensitivity : std::max<uint16_t>(1, impl.gateSensitivity);

116✔

2322

        w.put16(gate);

116✔

2323

        w.put16(impl.processingGain);

116✔

2324

        w.put16(1);

116✔

2325

        w.put32((uint32_t)impl.info.tempo);

116✔

2326

        w.put8(1);

116✔

2327

        w.put8(impl.silenceSelected ? 1 : 0);

116✔

2328

        w.endChunk(c);

116✔

2332

        const size_t c = w.beginChunk("RECY");

116✔

2333

        w.put8(0xbc);

116✔

2334

        w.put8(0x02);

116✔

2335

        w.put8(0);

116✔

2336

        w.put8(0);

116✔

2337

        w.put8(0);

116✔

2338

        w.put8(1);

116✔

2339

        w.put8(0);

116✔

2340

        w.put32((uint32_t)(impl.totalFrames * impl.info.channels * (impl.info.bit_depth / 8)));

116✔

2341

        w.put32((uint32_t)impl.slices.size());

116✔

2342

        w.endChunk(c);

116✔

2346

        const size_t devl = w.beginCat("DEVL");

116✔

2347

        const size_t trsh = w.beginChunk("TRSH");

116✔

2348

        w.put8(impl.transientEnabled ? 1 : 0);

116✔

2349

        w.put16(impl.transientAttack);

116✔

2350

        w.put16(impl.transientDecay);

116✔

2351

        w.put16(impl.transientStretch);

116✔

2352

        w.endChunk(trsh);

116✔

2354

        const size_t eq = w.beginChunk("EQ  ");

116✔

2355

        const uint8_t eqPayload[] = {0x00, 0x00, 0x0f, 0x00, 0x64, 0x00, 0x00, 0x03, 0xe8, 0x09, 0xc4, 0x00, 0x00, 0x03, 0xe8, 0x4e, 0x20};

116✔

2356

        w.putBytes(eqPayload, sizeof(eqPayload));

116✔

2357

        w.endChunk(eq);

116✔

2359

        const size_t comp = w.beginChunk("COMP");

116✔

2360

        const uint8_t compPayload[] = {0x00, 0x00, 0x4d, 0x00, 0x27, 0x00, 0x42, 0x00, 0x38};

116✔

2361

        w.putBytes(compPayload, sizeof(compPayload));

116✔

2362

        w.endChunk(comp);

116✔

2364

        w.endChunk(devl);

116✔

2368

        const size_t slcl = w.beginCat("SLCL");

116✔

2369

        std::vector<VLSliceEntry> sorted = impl.slices;

116✔

2370

        std::sort(sorted.begin(), sorted.end(),

116✔

2371

                  [](const VLSliceEntry& a, const VLSliceEntry& b)

28,758✔

2373

                      return a.sample_start < b.sample_start;

28,758✔

2375

        for (const auto& s : sorted)

3,886✔

2377

            const size_t c = w.beginChunk("SLCE");

3,770✔

2378

            w.put32(s.sample_start);

3,770✔

2379

            w.put32(std::max<uint32_t>(1, s.sample_length));

3,770✔

2380

            w.put16(s.points);

3,770✔

2381

            uint8_t flags = 0;

3,770✔

2382

            if (s.state == kSliceMuted)

3,770✔

2383

                flags |= 0x01;

6✔

2384

            else if (s.state == kSliceLocked)

3,764✔

2385

                flags |= 0x02;

12✔

2386

            if (s.selected_flag)

3,770✔

2387

                flags |= 0x04;

69✔

2388

            w.put8(flags);

3,770✔

2389

            w.endChunk(c);

3,770✔

2391

        w.endChunk(slcl);

116✔

2392

116✔

2395

        const size_t c = w.beginChunk("SINF");

116✔

2396

        w.put8((uint8_t)impl.info.channels);

116✔

2397

        w.put8(bitDepthCode(impl.info.bit_depth));

116✔

2398

        w.put32((uint32_t)impl.info.sample_rate);

116✔

2399

        w.put32(impl.totalFrames);

116✔

2400

        w.put32(impl.loopStart);

116✔

2401

        w.put32(impl.loopEnd);

116✔

2402

        w.endChunk(c);

116✔

2405

    writeSimpleChunk(w, "SDAT", sdat);

116✔

2406

    w.endChunk(root);

116✔

2407

    return w.data;

232✔

2408

116✔

2430

bool isPowerOfTwo(int32_t value)

26✔

2432

    return value > 0 && (value & (value - 1)) == 0;

26✔

2435

VLSuperFluxOptions superfluxDefaults()

26✔

2437

    VLSuperFluxOptions o = {};

26✔

2438

    o.frame_size = 2048;

26✔

2439

    o.fps = 200;

26✔

2440

    o.filter_bands = 24;

26✔

2441

    o.max_bins = 3;

26✔

2442

    o.diff_frames = 0;

26✔

2443

    o.min_slice_frames = 0;

26✔

2444

    o.filter_equal = 0;

26✔

2445

    o.online = 0;

26✔

2446

    o.threshold = 1.1f;

26✔

2447

    o.combine_ms = 50.0f;

26✔

2448

    o.pre_avg = 0.15f;

26✔

2449

    o.pre_max = 0.01f;

26✔

2450

    o.post_avg = 0.0f;

26✔

2451

    o.post_max = 0.05f;

26✔

2452

    o.delay_ms = 0.0f;

26✔

2453

    o.ratio = 0.5f;

26✔

2454

    o.fmin = 30.0f;

26✔

2455

    o.fmax = 17000.0f;

26✔

2456

    o.log_mul = 1.0f;

26✔

2457

    o.log_add = 1.0f;

26✔

2458

    return o;

26✔

2461

VLError validateSuperFluxOptions(const VLSuperFluxOptions& o, int32_t sampleRate)

26✔

2463

    if (!isPowerOfTwo(o.frame_size) || o.frame_size < 64 || o.frame_size > 32768)

26✔

2466

    if (o.fps <= 0 || o.fps > sampleRate)

26✔

2469

    if (o.filter_bands < 1 || o.max_bins < 1)

26✔

2472

    if (o.diff_frames < 0)

26✔

2475

    if (o.min_slice_frames < 0)

26✔

2478

    if (!std::isfinite(o.threshold) || !std::isfinite(o.combine_ms) || !std::isfinite(o.pre_avg) || !std::isfinite(o.pre_max) ||

52✔

2479

        !std::isfinite(o.post_avg) || !std::isfinite(o.post_max) || !std::isfinite(o.delay_ms) || !std::isfinite(o.ratio) ||

26✔

2480

        !std::isfinite(o.fmin) || !std::isfinite(o.fmax) || !std::isfinite(o.log_mul) || !std::isfinite(o.log_add))

52✔

2485

    if (o.combine_ms < 0.0f || o.pre_avg < 0.0f || o.pre_max < 0.0f || o.post_avg < 0.0f || o.post_max < 0.0f)

26✔

2488

    if (o.ratio < 0.0f || o.ratio > 1.0f)

26✔

2491

    if (o.fmin <= 0.0f || o.fmax <= o.fmin || o.log_mul <= 0.0f || o.log_add <= 0.0f)

26✔

2494

    return VL_OK;

26✔

2497

std::vector<float> makeHannWindow(int32_t frameSize)

26✔

2499

    std::vector<float> window((size_t)frameSize, 1.0f);

26✔

2500

    if (frameSize <= 1)

26✔

2503

    for (int32_t i = 0; i < frameSize; ++i)

53,274✔

2504

        window[(size_t)i] = (float)(0.5 - 0.5 * std::cos(kVLTwoPi * (double)i / (double)(frameSize - 1)));

53,248✔

2506

    return window;

26✔

2509

std::vector<float> superfluxFrequencies(int32_t bands, float fmin, float fmax)

26✔

2511

    std::vector<float> frequencies;

26✔

2512

    const double factor = std::pow(2.0, 1.0 / (double)bands);

26✔

2514

    double freq = 440.0;

26✔

2515

    frequencies.push_back((float)freq);

26✔

2516

    while (freq <= (double)fmax)

3,328✔

2518

        freq *= factor;

3,302✔

2519

        frequencies.push_back((float)freq);

3,302✔

2522

    freq = 440.0;

26✔

2523

    while (freq >= (double)fmin)

2,444✔

2525

        freq /= factor;

2,418✔

2526

        frequencies.push_back((float)freq);

2,418✔

2529

    std::sort(frequencies.begin(), frequencies.end());

26✔

2530

    return frequencies;

26✔

2533

bool buildSuperFluxFilterbank(int32_t numFftBins,

26✔

2539

    const float fmax = std::min(options.fmax, (float)sampleRate * 0.5f);

26✔

2540

    std::vector<float> frequencies = superfluxFrequencies(options.filter_bands, options.fmin, fmax);

26✔

2541

    const double factor = ((double)sampleRate * 0.5) / (double)numFftBins;

26✔

2543

    std::vector<int32_t> bins;

26✔

2544

    bins.reserve(frequencies.size());

26✔

2545

    for (float frequency : frequencies)

5,772✔

2547

        const int32_t bin = (int32_t)std::lround((double)frequency / factor);

5,746✔

2548

        if (bin >= 0 && bin < numFftBins)

5,746✔

2549

            bins.push_back(bin);

5,746✔

2552

    std::sort(bins.begin(), bins.end());

26✔

2553

    bins.erase(std::unique(bins.begin(), bins.end()), bins.end());

26✔

2554

    if (bins.size() < 5)

26✔

2557

    numBands = (int32_t)bins.size() - 2;

26✔

2558

    if (numBands < 3)

26✔

2561

    filterbank.assign((size_t)numFftBins * (size_t)numBands, 0.0f);

26✔

2562

    for (int32_t band = 0; band < numBands; ++band)

3,692✔

2564

        const int32_t start = bins[(size_t)band];

3,666✔

2565

        const int32_t mid = bins[(size_t)band + 1u];

3,666✔

2566

        const int32_t stop = bins[(size_t)band + 2u];

3,666✔

2567

        if (mid <= start || stop <= mid)

3,666✔

2570

        const float height = options.filter_equal ? 2.0f / (float)(stop - start) : 1.0f;

3,666✔

2571

        for (int32_t bin = start; bin < mid; ++bin)

23,868✔

2573

            const float t = (float)(bin - start) / (float)(mid - start);

20,202✔

2574

            filterbank[(size_t)bin * (size_t)numBands + (size_t)band] = t * height;

20,202✔

2576

        for (int32_t bin = mid; bin < stop; ++bin)

24,414✔

2578

            const float t = (float)(bin - mid) / (float)(stop - mid);

20,748✔

2579

            filterbank[(size_t)bin * (size_t)numBands + (size_t)band] = (1.0f - t) * height;

20,748✔

2583

    return true;

26✔

2584

26✔

2586

int32_t deriveSuperFluxDiffFrames(const std::vector<float>& window, double hopSize, float ratio)

26✔

2588

    size_t sample = 0;

26✔

2589

    while (sample < window.size() && window[sample] <= ratio)

13,338✔

2590

        ++sample;

13,312✔

2592

    const double diffSamples = (double)window.size() * 0.5 - (double)sample;

26✔

2593

    return std::max(1, (int32_t)std::lround(diffSamples / hopSize));

26✔

2596

bool computeSuperFluxActivations(const float* left,

26✔

2604

    const int32_t frameSize = options.frame_size;

26✔

2605

    const int32_t numFftBins = frameSize / 2;

26✔

2606

    const double hopSize = (double)sampleRate / (double)options.fps;

26✔

2607

    const int32_t numFrames = std::max(1, (int32_t)std::ceil((double)frames / hopSize));

26✔

2609

    std::vector<float> window = makeHannWindow(frameSize);

26✔

2610

    std::vector<float> filterbank;

26✔

2611

    int32_t numBands = 0;

26✔

2612

    if (!buildSuperFluxFilterbank(numFftBins, sampleRate, options, filterbank, numBands))

26✔

2615

    std::vector<float> spec((size_t)numFrames * (size_t)numBands, 0.0f);

26✔

2616

    std::vector<double> fftBuffer((size_t)frameSize);

52✔

2617

    std::vector<float> magnitudes((size_t)numFftBins);

52✔

2618

    std::vector<int> fftIp(2 + (size_t)frameSize, 0);

26✔

2619

    std::vector<double> fftW((size_t)frameSize / 2);

26✔

2621

    for (int32_t frame = 0; frame < numFrames; ++frame)

17,725✔

2623

        const int32_t seek = options.online ? (int32_t)((double)(frame + 1) * hopSize - (double)frameSize)

17,699✔

2624

                                            : (int32_t)((double)frame * hopSize - (double)frameSize * 0.5);

17,699✔

2626

        for (int32_t i = 0; i < frameSize; ++i)

36,265,251✔

2628

            const int32_t src = seek + i;

36,247,552✔

2629

            float sample = 0.0f;

36,247,552✔

2630

            if (src >= 0 && src < frames)

36,247,552✔

2632

                const float l = std::isfinite(left[src]) ? left[src] : 0.0f;

36,106,416✔

2633

                if (channels == 2)

36,106,416✔

2635

                    const float r = std::isfinite(right[src]) ? right[src] : 0.0f;

4,237,454✔

2636

                    sample = (l + r) * 0.5f;

4,237,454✔

2640

                    sample = l;

31,868,962✔

2643

            fftBuffer[(size_t)i] = (double)(sample * window[(size_t)i]);

36,247,552✔

2646

        rdft(frameSize, 1, fftBuffer.data(), fftIp.data(), fftW.data());

17,699✔

2648

        magnitudes[0] = (float)std::abs(fftBuffer[0]);

17,699✔

2649

        for (int32_t bin = 1; bin < numFftBins; ++bin)

18,123,776✔

2651

            const double re = fftBuffer[(size_t)bin * 2];

18,106,077✔

2652

            const double im = fftBuffer[(size_t)bin * 2 + 1];

18,106,077✔

2653

            magnitudes[(size_t)bin] = (float)std::sqrt(re * re + im * im);

18,106,077✔

2656

        for (int32_t band = 0; band < numBands; ++band)

2,513,258✔

2658

            double value = 0.0;

2,495,559✔

2659

            for (int32_t bin = 0; bin < numFftBins; ++bin)

2,147,483,647✔

2660

                value += (double)magnitudes[(size_t)bin] * (double)filterbank[(size_t)bin * (size_t)numBands + (size_t)band];

2,147,483,647✔

2662

            const float logged = std::log10(options.log_mul * (float)value + options.log_add);

2,495,559✔

2663

            spec[(size_t)frame * (size_t)numBands + (size_t)band] = logged;

2,495,559✔

2668

        options.diff_frames > 0 ? options.diff_frames : deriveSuperFluxDiffFrames(window, hopSize, options.ratio);

26✔

2670

    activations.assign((size_t)numFrames, 0.0f);

26✔

2671

    for (int32_t frame = diffFrames; frame < numFrames; ++frame)

17,673✔

2673

        float sum = 0.0f;

17,647✔

2674

        const int32_t prevFrame = frame - diffFrames;

17,647✔

2675

        for (int32_t band = 0; band < numBands; ++band)

2,505,874✔

2677

            int32_t first = band - options.max_bins / 2;

2,488,227✔

2678

            int32_t last = first + options.max_bins - 1;

2,488,227✔

2679

            if (first < 0)

2,488,227✔

2681

                last -= first;

17,647✔

2682

                first = 0;

17,647✔

2684

            if (last >= numBands)

2,488,227✔

2686

                first = std::max(0, first - (last - numBands + 1));

17,647✔

2687

                last = numBands - 1;

17,647✔

2689

            float prevMax = spec[(size_t)prevFrame * (size_t)numBands + (size_t)band];

2,488,227✔

2690

            for (int32_t k = first; k <= last; ++k)

9,952,908✔

2691

                prevMax = std::max(prevMax, spec[(size_t)prevFrame * (size_t)numBands + (size_t)k]);

7,464,681✔

2693

            const float diff = spec[(size_t)frame * (size_t)numBands + (size_t)band] - prevMax;

2,488,227✔

2694

            if (diff > 0.0f)

2,488,227✔

2695

                sum += diff;

415,324✔

2697

        activations[(size_t)frame] = sum;

17,647✔

2700

    return true;

26✔

2701

26✔

2703

std::vector<double> pickSuperFluxOnsets(const std::vector<float>& activations, int32_t fps, const VLSuperFluxOptions& options)

26✔

2705

    const int32_t count = (int32_t)activations.size();

26✔

2706

    const int32_t preAvg = std::max(0, (int32_t)std::lround((double)fps * (double)options.pre_avg));

26✔

2707

    const int32_t preMax = std::max(0, (int32_t)std::lround((double)fps * (double)options.pre_max));

26✔

2708

    const int32_t postAvg = options.online ? 0 : std::max(0, (int32_t)std::lround((double)fps * (double)options.post_avg));

26✔

2709

    const int32_t postMax = options.online ? 0 : std::max(0, (int32_t)std::lround((double)fps * (double)options.post_max));

26✔

2710

    const double combineSeconds = (double)options.combine_ms / 1000.0;

26✔

2711

    const double delaySeconds = (double)options.delay_ms / 1000.0;

26✔

2713

    std::vector<double> detections;

26✔

2714

    double lastDetection = -std::numeric_limits<double>::infinity();

26✔

2715

    for (int32_t frame = 0; frame < count; ++frame)

17,725✔

2717

        const int32_t maxStart = std::max(0, frame - preMax);

17,699✔

2718

        const int32_t maxStop = std::min(count - 1, frame + postMax);

17,699✔

2719

        float movMax = 0.0f;

17,699✔

2720

        for (int32_t i = maxStart; i <= maxStop; ++i)

243,146✔

2721

            movMax = std::max(movMax, activations[(size_t)i]);

225,447✔

2723

        const int32_t avgStart = std::max(0, frame - preAvg);

17,699✔

2724

        const int32_t avgStop = std::min(count - 1, frame + postAvg);

17,699✔

2725

        double avg = 0.0;

17,699✔

2726

        for (int32_t i = avgStart; i <= avgStop; ++i)

554,278✔

2727

            avg += activations[(size_t)i];

536,579✔

2728

        avg /= (double)(avgStop - avgStart + 1);

17,699✔

2730

        const float value = activations[(size_t)frame];

17,699✔

2731

        if (value <= 0.0f || value != movMax || (double)value < avg + (double)options.threshold)

17,699✔

2732

            continue;

17,101✔

2734

        const double time = (double)frame / (double)fps + delaySeconds;

598✔

2735

        if (detections.empty() || time - lastDetection > combineSeconds)

598✔

2737

            detections.push_back(time);

476✔

2738

            lastDetection = time;

476✔

2742

    return detections;

26✔

2745

std::vector<uint32_t> superfluxSliceBoundaries(const std::vector<double>& detections,

26✔

2751

        (uint32_t)std::max(1, (int32_t)std::lround((double)options.combine_ms / 1000.0 * (double)sampleRate));

26✔

2753

        (uint32_t)(options.min_slice_frames > 0 ? (uint32_t)options.min_slice_frames : std::max(combineFrames, (uint32_t)std::max(1, (int32_t)std::lround((double)sampleRate * 0.01))));

26✔

2755

    std::vector<uint32_t> boundaries;

26✔

2756

    boundaries.push_back(0);

26✔

2758

    for (double detection : detections)

502✔

2760

        const int64_t rounded = (int64_t)std::llround(detection * (double)sampleRate);

476✔

2761

        if (rounded <= 0 || rounded >= frames)

476✔

2764

        const uint32_t sample = (uint32_t)rounded;

476✔

2765

        if (sample - boundaries.back() >= minSliceFrames)

476✔

2766

            boundaries.push_back(sample);

457✔

2769

    if ((uint32_t)frames - boundaries.back() < minSliceFrames && boundaries.size() > 1)

26✔

2770

        boundaries.pop_back();

2✔

2772

    boundaries.push_back((uint32_t)frames);

26✔

2773

    return boundaries;

52✔

2776

int32_t addSliceAtSample(VLFile file, uint32_t sample_start, int32_t ppq_pos, const float* left, const float* right, int32_t frames)

1,115✔

2778

    if (!file)

1,115✔

2781

    if (!left || frames <= 0 || ppq_pos < 0)

1,115✔

2782

        return (int32_t)VL_ERROR_INVALID_ARG;

2✔

2784

    const int32_t channels = std::clamp(file->impl.info.channels, 1, 2);

1,113✔

2785

    if (channels == 2 && !right)

1,113✔

2786

        return (int32_t)VL_ERROR_INVALID_ARG;

1✔

2788

    const uint32_t end = sample_start + (uint32_t)frames;

1,112✔

2789

    const uint32_t declaredFrames = file->impl.info.total_frames > 0 ? (uint32_t)file->impl.info.total_frames : 0u;

1,112✔

2790

    const uint32_t requiredFrames = std::max(end, declaredFrames);

1,112✔

2791

    const size_t required = (size_t)requiredFrames * (size_t)channels;

1,112✔

2793

    if (required > file->impl.pcm.max_size())

1,112✔

2796

    if (file->impl.pcm.size() < required)

1,112✔

2798

        if (!file->impl.pcm.resize(required, 0))

55✔

2802

    for (int32_t f = 0; f < frames; ++f)

5,819,336✔

2804

        const size_t dst = ((size_t)sample_start + (size_t)f) * (size_t)channels;

5,818,224✔

2805

        file->impl.pcm[dst] = floatToPCM(left[f], file->impl.info.bit_depth);

5,818,224✔

2806

        if (channels == 2)

5,818,224✔

2807

            file->impl.pcm[dst + 1] = floatToPCM(right[f], file->impl.info.bit_depth);

589,208✔

2810

    VLSliceEntry s;

1,112✔

2811

    s.ppq_pos = (uint32_t)ppq_pos;

1,112✔

2812

    s.sample_start = sample_start;

1,112✔

2813

    s.sample_length = (uint32_t)frames;

1,112✔

2814

    s.rendered_length = (uint32_t)frames;

1,112✔

2815

    s.points = 0x7fff;

1,112✔

2816

    s.selected_flag = 0;

1,112✔

2817

    s.state = kSliceNormal;

1,112✔

2819

    file->impl.totalFrames = (uint32_t)(file->impl.pcm.size() / (size_t)channels);

1,112✔

2820

    file->impl.info.total_frames = (int32_t)file->impl.totalFrames;

1,112✔

2821

    file->impl.cacheSliceLoop(s);

1,112✔

2823

    if (file->impl.slices.size() == file->impl.slices.max_size())

1,112✔

2825

    file->impl.slices.push_back(s);

1,112✔

2827

    file->impl.info.slice_count = (int32_t)file->impl.slices.size();

1,112✔

2828

    if (file->impl.info.loop_end <= file->impl.info.loop_start)

1,112✔

2829

        file->impl.info.loop_end = file->impl.info.total_frames;

9✔

2831

    return (int32_t)file->impl.slices.size() - 1;

1,112✔

2840

VLFile vl_open(const char* path, VLError* err)

95✔

2842

    auto set = [&](VLError e)

2✔

2844

        if (err)

2✔

2845

            *err = e;

2✔

2846

};

97✔

2848

    if (!path)

95✔

2850

        set(VL_ERROR_INVALID_ARG);

1✔

2851

        return nullptr;

1✔

2854

    std::ifstream f(path, std::ios::binary | std::ios::ate);

94✔

2855

    if (!f)

94✔

2857

        set(VL_ERROR_FILE_NOT_FOUND);

1✔

2858

        return nullptr;

1✔

2861

    const std::streamsize sz = f.tellg();

93✔

2862

    f.seekg(0);

93✔

2864

    std::vector<char> buf((size_t)sz);

93✔

2865

    if (!f.read(buf.data(), sz))

93✔

2871

    return vl_open_from_memory(buf.data(), (size_t)sz, err);

93✔

2872

94✔

2874

VLFile vl_open_from_memory(const void* data, size_t size, VLError* err)

194✔

2876

    auto set = [&](VLError e)

194✔

2878

        if (err)

194✔

2879

            *err = e;

194✔

2880

};

388✔

2882

    if (!data || size == 0)

194✔

2884

        set(VL_ERROR_INVALID_ARG);

1✔

2885

        return nullptr;

1✔

2888

    VLFile_s* h = new (std::nothrow) VLFile_s();

193✔

2889

    if (!h)

193✔

2895

    if (!h->impl.loadFromBuffer((const char*)data, size))

193✔

2897

        const VLError loadError = h->impl.loadError != VL_OK ? h->impl.loadError : VL_ERROR_FILE_CORRUPT;

93✔

2898

        delete h;

93✔

2899

        set(loadError);

93✔

2900

        return nullptr;

93✔

2903

    set(VL_OK);

100✔

2904

    return h;

100✔

2907

VLFile vl_create_new(int32_t channels, int32_t sample_rate, int32_t tempo, VLError* err)

67✔

2909

    auto set = [&](VLError e)

67✔

2911

        if (err)

67✔

2912

            *err = e;

51✔

2913

};

134✔

2915

    if (channels != 1 && channels != 2)

67✔

2917

        set(VL_ERROR_INVALID_ARG);

4✔

2918

        return nullptr;

4✔

2921

    if (sample_rate < 8000 || sample_rate > 192000)

63✔

2923

        set(VL_ERROR_INVALID_SAMPLE_RATE);

8✔

2924

        return nullptr;

8✔

2927

    if (tempo <= 0)

55✔

2929

        set(VL_ERROR_INVALID_TEMPO);

4✔

2930

        return nullptr;

4✔

2933

    VLFile_s* h = new (std::nothrow) VLFile_s();

51✔

2934

    if (!h)

51✔

2940

    h->impl.info.channels = channels;

51✔

2941

    h->impl.info.sample_rate = sample_rate;

51✔

2942

    h->impl.info.slice_count = 0;

51✔

2943

    h->impl.info.tempo = tempo;

51✔

2944

    h->impl.info.original_tempo = tempo;

51✔

2945

    h->impl.info.ppq_length = VLFileImpl::kREXPPQ * 4;

51✔

2946

    h->impl.info.time_sig_num = 4;

51✔

2947

    h->impl.info.time_sig_den = 4;

51✔

2948

    h->impl.info.bit_depth = 16;

51✔

2949

    h->impl.info.total_frames = 0;

51✔

2950

    h->impl.info.loop_start = 0;

51✔

2951

    h->impl.info.loop_end = 0;

51✔

2952

    h->impl.info.processing_gain = 1000;

51✔

2953

    h->impl.info.transient_enabled = 1;

51✔

2954

    h->impl.info.transient_attack = 0;

51✔

2955

    h->impl.info.transient_decay = 1023;

51✔

2956

    h->impl.info.transient_stretch = 0;

51✔

2957

    h->impl.info.silence_selected = 0;

51✔

2958

    h->impl.processingGain = 1000;

51✔

2959

    h->impl.transientEnabled = true;

51✔

2960

    h->impl.transientAttack = 0;

51✔

2961

    h->impl.transientDecay = 1023;

51✔

2962

    h->impl.transientStretch = 0;

51✔

2963

    h->impl.silenceSelected = false;

51✔

2965

    set(VL_OK);

51✔

2966

    return h;

51✔

2969

void vl_superflux_default_options(VLSuperFluxOptions* out)

9✔

2971

    if (out)

9✔

2972

        *out = superfluxDefaults();

8✔

2973

9✔

2975

VLFile vl_create_from_superflux(int32_t channels,

31✔

2984

    auto set = [&](VLError e)

31✔

2986

        if (err)

31✔

2987

            *err = e;

31✔

2988

};

62✔

2990

    if (channels != 1 && channels != 2)

31✔

2992

        set(VL_ERROR_INVALID_ARG);

1✔

2993

        return nullptr;

1✔

2996

    if (sample_rate < 8000 || sample_rate > 192000)

30✔

2998

        set(VL_ERROR_INVALID_SAMPLE_RATE);

1✔

2999

        return nullptr;

1✔

3002

    if (tempo <= 0)

29✔

3004

        set(VL_ERROR_INVALID_TEMPO);

1✔

3005

        return nullptr;

1✔

3008

    if (!left || frames <= 0 || (channels == 2 && !right))

28✔

3010

        set(VL_ERROR_INVALID_ARG);

2✔

3011

        return nullptr;

2✔

3014

    VLSuperFluxOptions opts = options ? *options : superfluxDefaults();

26✔

3015

    VLError optionError = validateSuperFluxOptions(opts, sample_rate);

26✔

3016

    if (optionError != VL_OK)

26✔

3024

        std::vector<float> activations;

26✔

3025

        if (!computeSuperFluxActivations(left, right, channels, frames, sample_rate, opts, activations))

26✔

3031

        const std::vector<double> detections = pickSuperFluxOnsets(activations, opts.fps, opts);

26✔

3032

        const std::vector<uint32_t> boundaries = superfluxSliceBoundaries(detections, frames, sample_rate, opts);

26✔

3034

        VLError createError = VL_OK;

26✔

3035

        VLFile file = vl_create_new(channels, sample_rate, tempo, &createError);

26✔

3036

        if (!file)

26✔

3042

        VLFileInfo info = {};

26✔

3043

        if (vl_get_info(file, &info) != VL_OK)

26✔

3050

        const double beats = ((double)frames * (double)tempo) / (60000.0 * (double)sample_rate);

26✔

3051

        info.ppq_length = std::max(1, (int32_t)std::lround(beats * (double)VLFileImpl::kREXPPQ));

26✔

3052

        info.total_frames = frames;

26✔

3053

        info.loop_start = 0;

26✔

3054

        info.loop_end = frames;

26✔

3055

        info.transient_enabled = 0;

26✔

3056

        info.transient_stretch = 0;

26✔

3057

        info.transient_attack = 0;

26✔

3058

        info.transient_decay = 1023;

26✔

3059

        VLError infoError = vl_set_info(file, &info);

26✔

3060

        if (infoError != VL_OK)

26✔

3067

        int32_t previousPpq = -1;

26✔

3068

        for (size_t i = 0; i + 1 < boundaries.size(); ++i)

507✔

3070

            const uint32_t start = boundaries[i];

481✔

3071

            const uint32_t stop = boundaries[i + 1u];

481✔

3072

            if (stop <= start)

481✔

3075

            int32_t ppq = (int32_t)(((uint64_t)start * (uint64_t)info.ppq_length + (uint32_t)frames / 2u) / (uint32_t)frames);

481✔

3076

            if (ppq <= previousPpq)

481✔

3078

            ppq = std::min(ppq, std::max(0, info.ppq_length - 1));

481✔

3079

            previousPpq = ppq;

481✔

3082

                addSliceAtSample(file, start, ppq, left + start, channels == 2 ? right + start : nullptr, (int32_t)(stop - start));

481✔

3083

            if (sliceIndex < 0)

481✔

3092

        if (file->impl.slices.empty())

26✔

3099

        set(VL_OK);

26✔

3100

        return file;

26✔

3101

26✔

3114

void vl_close(VLFile file)

209✔

3116

    delete file;

209✔

3117

209✔

3123

VLError vl_get_info(VLFile file, VLFileInfo* out)

162✔

3125

    if (!file)

162✔

3126

        return VL_ERROR_INVALID_HANDLE;

1✔

3128

    if (!out)

161✔

3129

        return VL_ERROR_INVALID_ARG;

16✔

3131

    *out = file->impl.info;

145✔

3132

    return VL_OK;

145✔

3135

VLError vl_get_creator_info(VLFile file, VLCreatorInfo* out)

35✔

3137

    if (!file)

35✔

3138

        return VL_ERROR_INVALID_HANDLE;

1✔

3140

    if (!out)

34✔

3141

        return VL_ERROR_INVALID_ARG;

16✔

3143

    const VLCreatorInfo& src = file->impl.creator;

18✔

3144

    if (!src.name[0] && !src.copyright[0] && !src.url[0] && !src.email[0] && !src.free_text[0])

18✔

3145

        return VL_ERROR_NO_CREATOR_INFO;

16✔

3147

    *out = src;

2✔

3148

    return VL_OK;

2✔

3155

VLError vl_get_slice_info(VLFile file, int32_t index, VLSliceInfo* out)

2,242✔

3157

    if (!file)

2,242✔

3158

        return VL_ERROR_INVALID_HANDLE;

1✔

3160

    if (!out)

2,241✔

3161

        return VL_ERROR_INVALID_ARG;

32✔

3163

    if (index < 0 || (size_t)index >= file->impl.slices.size())

2,209✔

3164

        return VL_ERROR_INVALID_SLICE;

32✔

3166

    const VLSliceEntry& s = file->impl.slices[(size_t)index];

2,177✔

3167

    out->ppq_pos = (int32_t)s.ppq_pos;

2,177✔

3168

    out->sample_length = (int32_t)s.sample_length;

2,177✔

3169

    out->sample_start = (int32_t)s.sample_start;

2,177✔

3170

    out->analysis_points = (int32_t)s.points;

2,177✔

3171

    out->flags = sliceFlags(s);

2,177✔

3172

    return VL_OK;

2,177✔

3175

VLError vl_set_slice_info(VLFile file, int32_t index, int32_t flags, int32_t analysis_points)

39✔

3177

    if (!file)

39✔

3178

        return VL_ERROR_INVALID_HANDLE;

1✔

3180

    if (index < 0 || (size_t)index >= file->impl.slices.size())

38✔

3181

        return VL_ERROR_INVALID_SLICE;

32✔

3183

    VLError err = applySliceFlags(file->impl.slices[(size_t)index], flags, analysis_points);

6✔

3184

    if (err != VL_OK)

6✔

3185

        return err;

3✔

3187

    return VL_OK;

3✔

3194

int32_t vl_get_slice_frame_count(VLFile file, int32_t index)

1,573✔

3196

    if (!file)

1,573✔

3197

        return (int32_t)VL_ERROR_INVALID_HANDLE;

1✔

3199

    if (index < 0 || (size_t)index >= file->impl.slices.size())

1,572✔

3200

        return (int32_t)VL_ERROR_INVALID_SLICE;

34✔

3202

    return (int32_t)file->impl.slices[(size_t)index].rendered_length;

1,538✔

3205

VLError vl_decode_slice(VLFile file, int32_t index, float* left, float* right, int32_t frame_offset, int32_t capacity, int32_t* frames_out)

1,588✔

3207

    if (!file)

1,588✔

3208

        return VL_ERROR_INVALID_HANDLE;

1✔

3210

    if (!left)

1,587✔

3211

        return VL_ERROR_INVALID_ARG;

14✔

3213

    if (frame_offset < 0)

1,573✔

3214

        return VL_ERROR_INVALID_ARG;

14✔

3216

    if (index < 0 || (size_t)index >= file->impl.slices.size())

1,559✔

3217

        return VL_ERROR_INVALID_SLICE;

28✔

3219

    const VLSliceEntry& s = file->impl.slices[(size_t)index];

1,531✔

3220

    const int32_t renderedFrames = (int32_t)s.rendered_length;

1,531✔

3221

    if (frame_offset > renderedFrames)

1,531✔

3222

        return VL_ERROR_INVALID_ARG;

14✔

3224

    const int32_t needed = renderedFrames - frame_offset;

1,517✔

3225

    if (capacity < needed)

1,517✔

3226

        return VL_ERROR_BUFFER_TOO_SMALL;

15✔

3228

    const auto& pcm = file->impl.pcm;

1,502✔

3229

    if (pcm.empty())

1,502✔

3232

    const uint32_t requestedFrames = (uint32_t)renderedFrames;

1,502✔

3233

    uint32_t sourceStart = s.sample_start;

1,502✔

3234

    if (sourceStart >= file->impl.totalFrames)

1,502✔

3236

        std::fill(left, left + needed, 0.f);

1✔

3238

        if (right)

1✔

3239

            std::fill(right, right + needed, 0.f);

1✔

3241

        if (frames_out)

1✔

3242

            *frames_out = needed;

1✔

3244

        return VL_OK;

1✔

3247

    uint32_t sourceFrames = s.sample_length;

1,501✔

3248

    if (file->impl.loopEnd > file->impl.loopStart && sourceStart < file->impl.loopEnd)

1,501✔

3249

        sourceFrames = std::min<uint32_t>(sourceFrames, file->impl.loopEnd - sourceStart);

1,265✔

3250

    sourceFrames = std::min<uint32_t>(sourceFrames, file->impl.totalFrames - sourceStart);

1,501✔

3252

    const uint32_t sourceEnd = sourceStart + sourceFrames;

1,501✔

3254

        s.render_loop_start,

1,501✔

3255

        s.render_loop_end,

1,501✔

3256

        s.render_loop_volume_compensation,

1,501✔

3257

};

1,501✔

3258

    const int32_t ch = std::max(1, file->impl.info.channels);

1,501✔

3259

    const float samplerGain = (float)file->impl.processingGain * 0.000833333354f;

1,501✔

3261

    uint32_t samplePos = std::min(sourceStart + 2u, sourceEnd);

1,501✔

3262

    int loopPhase = 0; // 0: forward source, 1: forward loop, 2: backward loop

1,501✔

3263

    bool stretchPhase = false;

1,501✔

3264

    float stretchEnv = 1.0f;

1,501✔

3266

        std::max<uint32_t>(1u, sourceEnd - segmentLoop.end + (requestedFrames > sourceFrames ? requestedFrames - sourceFrames : 0u));

1,501✔

3267

    const float stretchEnvDec = 1.0f / (float)stretchFrameCount;

1,501✔

3268

    float loopLevelComp = 1.0f;

1,501✔

3269

    const float loopLevelCompInc =

1,501✔

3270

        (segmentLoop.end > segmentLoop.start) ? (1.0f - segmentLoop.volumeCompensation) / (float)(segmentLoop.end - segmentLoop.start) : 0.0f;

1,501✔

3272

    for (uint32_t f = 0; f < requestedFrames; ++f)

5,986,316✔

3274

        const size_t src = (size_t)samplePos * (size_t)ch;

5,984,815✔

3275

        float l = 0.f;

5,984,815✔

3276

        float r = 0.f;

5,984,815✔

3278

        if (src < pcm.size())

5,984,815✔

3280

            const float level = samplerGain * stretchEnv * loopLevelComp;

5,984,815✔

3281

            l = pcmToFloat(pcm[src], file->impl.info.bit_depth) * level;

5,984,815✔

3282

            r = (ch >= 2 && src + 1 < pcm.size()) ? pcmToFloat(pcm[src + 1], file->impl.info.bit_depth) * level : l;

5,984,815✔

3285

        if ((int32_t)f >= frame_offset)

5,984,815✔

3287

            const size_t dst = (size_t)((int32_t)f - frame_offset);

5,970,771✔

3288

            left[dst] = l;

5,970,771✔

3289

            if (right)

5,970,771✔

3290

                right[dst] = r;

674,441✔

3293

        if (stretchPhase)

5,984,815✔

3295

            stretchEnv = std::max(0.0f, stretchEnv - stretchEnvDec);

709,283✔

3296

            if (loopPhase == 1)

709,283✔

3297

                loopLevelComp += loopLevelCompInc;

66,954✔

3298

            else if (loopPhase == 2)

642,329✔

3299

                loopLevelComp -= loopLevelCompInc;

642,329✔

3302

        if (loopPhase <= 1)

5,984,815✔

3304

            ++samplePos;

5,342,486✔

3305

            if (samplePos >= segmentLoop.end)

5,342,486✔

3307

                stretchPhase = true;

1,503✔

3308

                loopPhase = 2;

1,503✔

3309

                if (samplePos > 0)

1,503✔

3310

                    --samplePos;

1,503✔

3311

                if (samplePos <= segmentLoop.start)

1,503✔

3317

            if (samplePos > 0)

642,329✔

3318

                --samplePos;

642,329✔

3319

            if (samplePos <= segmentLoop.start)

642,329✔

3320

                loopPhase = 1;

33✔

3324

    if (frames_out)

1,501✔

3325

        *frames_out = needed;

1,501✔

3327

    return VL_OK;

1,501✔

3334

VLError vl_set_info(VLFile file, const VLFileInfo* info)

54✔

3336

    if (!file)

54✔

3337

        return VL_ERROR_INVALID_HANDLE;

1✔

3339

    if (!info)

53✔

3340

        return VL_ERROR_INVALID_ARG;

1✔

3342

    if (!file->impl.slices.empty() || !file->impl.pcm.empty())

52✔

3343

        return VL_ERROR_ALREADY_HAS_DATA;

1✔

3345

    if (info->channels != 1 && info->channels != 2)

51✔

3348

    if (info->sample_rate < 8000 || info->sample_rate > 192000)

51✔

3349

        return VL_ERROR_INVALID_SAMPLE_RATE;

1✔

3351

    if (info->tempo <= 0)

50✔

3352

        return VL_ERROR_INVALID_TEMPO;

1✔

3354

    file->impl.info = *info;

49✔

3355

    file->impl.info.channels = info->channels;

49✔

3356

    file->impl.info.sample_rate = info->sample_rate;

49✔

3357

    file->impl.info.bit_depth = storageBitDepth(info->bit_depth);

49✔

3358

    file->impl.processingGain = (uint16_t)std::clamp(info->processing_gain > 0 ? info->processing_gain : 1000, 0, 1000);

49✔

3359

    file->impl.transientEnabled = info->transient_enabled != 0;

49✔

3360

    file->impl.transientAttack = (uint16_t)std::clamp(info->transient_attack, 0, 1023);

49✔

3361

    file->impl.transientDecay = (uint16_t)std::clamp(info->transient_decay > 0 ? info->transient_decay : 1023, 0, 1023);

49✔

3362

    file->impl.transientStretch = (uint16_t)std::clamp(info->transient_stretch, 0, 100);

49✔

3363

    file->impl.silenceSelected = info->silence_selected != 0;

49✔

3365

    return VL_OK;

49✔

3368

VLError vl_set_creator_info(VLFile file, const VLCreatorInfo* info)

6✔

3370

    if (!file)

6✔

3371

        return VL_ERROR_INVALID_HANDLE;

1✔

3373

    if (!info)

5✔

3374

        return VL_ERROR_INVALID_ARG;

1✔

3376

    if (!file->impl.slices.empty() || !file->impl.pcm.empty())

4✔

3377

        return VL_ERROR_ALREADY_HAS_DATA;

1✔

3379

    file->impl.creator = *info;

3✔

3380

    file->impl.creator.name[sizeof(file->impl.creator.name) - 1] = '\0';

3✔

3381

    file->impl.creator.copyright[sizeof(file->impl.creator.copyright) - 1] = '\0';

3✔

3382

    file->impl.creator.url[sizeof(file->impl.creator.url) - 1] = '\0';

3✔

3383

    file->impl.creator.email[sizeof(file->impl.creator.email) - 1] = '\0';

3✔

3384

    file->impl.creator.free_text[sizeof(file->impl.creator.free_text) - 1] = '\0';

3✔

3386

    return VL_OK;

3✔

3389

int32_t vl_add_slice(VLFile file, int32_t ppq_pos, const float* left, const float* right, int32_t frames)

636✔

3391

    if (!file)

636✔

3392

        return (int32_t)VL_ERROR_INVALID_HANDLE;

1✔

3394

    if (ppq_pos < 0)

635✔

3395

        return (int32_t)VL_ERROR_INVALID_ARG;

1✔

3397

    const uint32_t start = calcSampleStartFromPPQ(file->impl, (uint32_t)ppq_pos);

634✔

3398

    return addSliceAtSample(file, start, ppq_pos, left, right, frames);

634✔

3401

VLError vl_remove_slice(VLFile file, int32_t index)

4✔

3403

    if (!file)

4✔

3404

        return VL_ERROR_INVALID_HANDLE;

1✔

3406

    if (index < 0 || (size_t)index >= file->impl.slices.size())

3✔

3407

        return VL_ERROR_INVALID_SLICE;

2✔

3409

    file->impl.slices.erase(file->impl.slices.begin() + index);

1✔

3410

    file->impl.info.slice_count = (int32_t)file->impl.slices.size();

1✔

3412

    return VL_OK;

1✔

3415

VLError vl_save(VLFile file, const char* path)

5✔

3417

    if (!file)

5✔

3418

        return VL_ERROR_INVALID_HANDLE;

1✔

3420

    if (!path)

4✔

3421

        return VL_ERROR_INVALID_ARG;

1✔

3423

    size_t size = 0;

3✔

3424

    VLError e = vl_save_to_memory(file, nullptr, &size);

3✔

3425

    if (e != VL_OK)

3✔

3426

        return e;

1✔

3428

    std::vector<uint8_t> buf(size);

2✔

3429

    e = vl_save_to_memory(file, buf.data(), &size);

2✔

3430

    if (e != VL_OK)

2✔

3433

    std::ofstream out(path, std::ios::binary);

2✔

3434

    if (!out)

2✔

3435

        return VL_ERROR_INVALID_ARG;

1✔

3437

    out.write((const char*)buf.data(), (std::streamsize)size);

1✔

3438

    return out ? VL_OK : VL_ERROR_FILE_CORRUPT;

1✔

3439

2✔

3441

VLError vl_save_to_memory(VLFile file, void* buf, size_t* size_out)

135✔

3443

    if (!file)

135✔

3444

        return VL_ERROR_INVALID_HANDLE;

1✔

3446

    if (!size_out)

134✔

3447

        return VL_ERROR_INVALID_ARG;

16✔

3449

    if (file->impl.pcm.empty())

118✔

3450

        return VL_ERROR_INVALID_ARG;

2✔

3452

    std::vector<uint8_t> encoded = buildREX2File(file->impl);

116✔

3454

    if (!buf)

116✔

3456

        *size_out = encoded.size();

43✔

3457

        return VL_OK;

43✔

3460

    if (*size_out < encoded.size())

73✔

3462

        *size_out = encoded.size();

30✔

3463

        return VL_ERROR_BUFFER_TOO_SMALL;

30✔

3466

    std::memcpy(buf, encoded.data(), encoded.size());

43✔

3467

    *size_out = encoded.size();

43✔

3468

    return VL_OK;

43✔

3469

116✔

3475

const char* vl_error_string(VLError err)

17✔

3477

    switch (static_cast<int32_t>(err))

17✔

3479

        case static_cast<int32_t>(VL_OK): return "OK";

1✔

3480

        case static_cast<int32_t>(VL_ERROR_INVALID_HANDLE): return "invalid handle";

1✔

3481

        case static_cast<int32_t>(VL_ERROR_INVALID_ARG): return "invalid argument";

1✔

3482

        case static_cast<int32_t>(VL_ERROR_FILE_NOT_FOUND): return "file not found";

1✔

3483

        case static_cast<int32_t>(VL_ERROR_FILE_CORRUPT): return "file corrupt or unsupported format";

1✔

3484

        case static_cast<int32_t>(VL_ERROR_OUT_OF_MEMORY): return "out of memory";

1✔

3485

        case static_cast<int32_t>(VL_ERROR_INVALID_SLICE): return "invalid slice index";

1✔

3486

        case static_cast<int32_t>(VL_ERROR_INVALID_SAMPLE_RATE): return "invalid sample rate";

1✔

3487

        case static_cast<int32_t>(VL_ERROR_BUFFER_TOO_SMALL): return "buffer too small";

1✔

3488

        case static_cast<int32_t>(VL_ERROR_NO_CREATOR_INFO): return "no creator info available";

1✔

3489

        case static_cast<int32_t>(VL_ERROR_NOT_IMPLEMENTED): return "not implemented";

1✔

3490

        case static_cast<int32_t>(VL_ERROR_ALREADY_HAS_DATA): return "already has data";

1✔

3491

        case static_cast<int32_t>(VL_ERROR_FILE_TOO_NEW): return "file too new";

1✔

3492

        case static_cast<int32_t>(VL_ERROR_ZERO_LOOP_LENGTH): return "zero loop length";

1✔

3493

        case static_cast<int32_t>(VL_ERROR_INVALID_SIZE): return "invalid size";

1✔

3494

        case static_cast<int32_t>(VL_ERROR_INVALID_TEMPO): return "invalid tempo";

1✔

3495

        default: return "unknown error";

1✔

3499

const char* vl_version_string(void)

1✔

3501

    return "0.2.0";

1✔

kunitoki / VelociLoops / 25340660593

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kunitoki / VelociLoops / 25340660593

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