ref: da054584cd20bb9147d3fbc5d281490df6e0fd99
dir: /src/pt2_sample_loader.c/
// for finding memory leaks in debug mode with Visual Studio #if defined _DEBUG && defined _MSC_VER #include <crtdbg.h> #endif #include <stdio.h> #include <string.h> #include <stdint.h> #include <stdbool.h> #include "pt2_textout.h" #include "pt2_sampler.h" // fixSampleBeep() #include "pt2_audio.h" #include "pt2_visuals.h" #include "pt2_helpers.h" #include "pt2_config.h" #include "pt2_sampling.h" #include "pt2_downsample2x.h" #include "pt2_askbox.h" #include "pt2_replayer.h" enum { WAV_FORMAT_PCM = 0x0001, WAV_FORMAT_IEEE_FLOAT = 0x0003 }; enum { SAMPLE_IFF = 0, SAMPLE_AIFF = 1, SAMPLE_WAV = 2 }; static bool loadWAVSample(UNICHAR *fileName, char *entryName) { uint16_t audioFormat, numChannels, bitsPerSample; uint32_t sampleRate; // zero out chunk pointers and lengths uint32_t fmtPtr = 0; uint32_t fmtLen = 0; uint32_t dataPtr = 0; uint32_t dataLen = 0; uint32_t inamPtr = 0; int32_t inamLen = 0; uint32_t xtraPtr = 0; uint32_t xtraLen = 0; uint32_t smplPtr = 0; uint32_t smplLen = 0; bool wavSampleNameFound = false; moduleSample_t *s = &song->samples[editor.currSample]; FILE *f = UNICHAR_FOPEN(fileName, "rb"); if (f == NULL) { displayErrorMsg("FILE I/O ERROR !"); return false; } fseek(f, 0, SEEK_END); uint32_t fileSize = ftell(f); if (fileSize == 0) { fclose(f); displayErrorMsg("NOT A WAV !"); return false; } // look for wanted chunks and set up pointers + lengths fseek(f, 12, SEEK_SET); uint32_t bytesRead = 0; while (!feof(f) && bytesRead < fileSize-12) { uint32_t chunkID, chunkSize; fread(&chunkID, 4, 1, f); if (feof(f)) break; fread(&chunkSize, 4, 1, f); if (feof(f)) break; uint32_t endOfChunk = (ftell(f) + chunkSize) + (chunkSize & 1); switch (chunkID) { case 0x20746D66: // "fmt " { fmtPtr = ftell(f); fmtLen = chunkSize; } break; case 0x61746164: // "data" { dataPtr = ftell(f); dataLen = chunkSize; } break; case 0x5453494C: // "LIST" { if (chunkSize >= 4) { fread(&chunkID, 4, 1, f); if (chunkID == 0x4F464E49) // "INFO" { bytesRead = 0; while (!feof(f) && (bytesRead < chunkSize)) { fread(&chunkID, 4, 1, f); fread(&chunkSize, 4, 1, f); switch (chunkID) { case 0x4D414E49: // "INAM" { inamPtr = ftell(f); inamLen = chunkSize; } break; default: break; } bytesRead += (chunkSize + (chunkSize & 1)); } } } } break; case 0x61727478: // "xtra" { xtraPtr = ftell(f); xtraLen = chunkSize; } break; case 0x6C706D73: // "smpl" { smplPtr = ftell(f); smplLen = chunkSize; } break; default: break; } bytesRead += chunkSize + (chunkSize & 1); fseek(f, endOfChunk, SEEK_SET); } // we need at least "fmt " and "data" - check if we found them sanely if ((fmtPtr == 0 || fmtLen < 16) || (dataPtr == 0 || dataLen == 0)) { fclose(f); displayErrorMsg("NOT A WAV !"); return false; } // ---- READ "fmt " CHUNK ---- fseek(f, fmtPtr, SEEK_SET); fread(&audioFormat, 2, 1, f); fread(&numChannels, 2, 1, f); fread(&sampleRate, 4, 1, f); fseek(f, 6, SEEK_CUR); fread(&bitsPerSample, 2, 1, f); int32_t sampleLength = dataLen; // --------------------------- if (sampleRate == 0 || sampleLength == 0 || sampleLength >= (int32_t)fileSize*(bitsPerSample/8)) { fclose(f); displayErrorMsg("WAV CORRUPT !"); return false; } if (audioFormat != WAV_FORMAT_PCM && audioFormat != WAV_FORMAT_IEEE_FLOAT) { fclose(f); displayErrorMsg("WAV UNSUPPORTED !"); return false; } if ((numChannels == 0) || (numChannels > 2)) { fclose(f); displayErrorMsg("WAV UNSUPPORTED !"); return false; } if (audioFormat == WAV_FORMAT_IEEE_FLOAT && bitsPerSample != 32 && bitsPerSample != 64) { fclose(f); displayErrorMsg("WAV UNSUPPORTED !"); return false; } if (bitsPerSample != 8 && bitsPerSample != 16 && bitsPerSample != 24 && bitsPerSample != 32 && bitsPerSample != 64) { fclose(f); displayErrorMsg("WAV UNSUPPORTED !"); return false; } bool forceDownSampling = false; if (sampleRate > 22050 && !config.noDownsampleOnSmpLoad) { if (askBox(ASKBOX_DOWNSAMPLE, "DOWNSAMPLE ?")) forceDownSampling = true; } // ---- READ SAMPLE DATA ---- fseek(f, dataPtr, SEEK_SET); int8_t *smpPtr = &song->sampleData[editor.currSample * config.maxSampleLength]; if (bitsPerSample == 8) // 8-BIT INTEGER SAMPLE { if (sampleLength > config.maxSampleLength*4) sampleLength = config.maxSampleLength*4; uint8_t *audioDataU8 = (uint8_t *)malloc(sampleLength * sizeof (uint8_t)); if (audioDataU8 == NULL) { fclose(f); statusOutOfMemory(); return false; } // read sample data if (fread(audioDataU8, 1, sampleLength, f) != (size_t)sampleLength) { fclose(f); free(audioDataU8); displayErrorMsg("I/O ERROR !"); return false; } // convert from stereo to mono (if needed) if (numChannels == 2) { sampleLength >>= 1; for (int32_t i = 0; i < sampleLength-1; i++) // add right channel to left channel { int32_t smp32 = (audioDataU8[(i << 1) + 0] - 128) + (audioDataU8[(i << 1) + 1] - 128); smp32 = 128 + (smp32 >> 1); audioDataU8[i] = (uint8_t)smp32; } } // 2x downsampling if (forceDownSampling) { downsample2x8BitU(audioDataU8, sampleLength); sampleLength >>= 1; } if (sampleLength > config.maxSampleLength) sampleLength = config.maxSampleLength; turnOffVoices(); for (int32_t i = 0; i < sampleLength; i++) smpPtr[i] = audioDataU8[i] - 128; free(audioDataU8); } else if (bitsPerSample == 16) // 16-BIT INTEGER SAMPLE { sampleLength >>= 1; if (sampleLength > config.maxSampleLength*4) sampleLength = config.maxSampleLength*4; int16_t *audioDataS16 = (int16_t *)malloc(sampleLength * sizeof (int16_t)); if (audioDataS16 == NULL) { fclose(f); statusOutOfMemory(); return false; } // read sample data if (fread(audioDataS16, 2, sampleLength, f) != (size_t)sampleLength) { fclose(f); free(audioDataS16); displayErrorMsg("I/O ERROR !"); return false; } // convert from stereo to mono (if needed) if (numChannels == 2) { sampleLength >>= 1; for (int32_t i = 0; i < sampleLength-1; i++) // add right channel to left channel audioDataS16[i] = (audioDataS16[(i << 1) + 0] + audioDataS16[(i << 1) + 1]) >> 1;; } // 2x downsampling if (forceDownSampling) { downsample2x16Bit(audioDataS16, sampleLength); sampleLength >>= 1; } if (sampleLength > config.maxSampleLength) sampleLength = config.maxSampleLength; double dAmp = 1.0; if (forceDownSampling) // we already normalized { dAmp = INT8_MAX / (double)INT16_MAX; } else { const double dPeak = get16BitPeak(audioDataS16, sampleLength); if (dPeak > 0.0) dAmp = INT8_MAX / dPeak; } turnOffVoices(); for (int32_t i = 0; i < sampleLength; i++) { int32_t smp32 = (int32_t)round(audioDataS16[i] * dAmp); assert(smp32 >= -128 && smp32 <= 127); // shouldn't happen according to dAmp (but just in case) smpPtr[i] = (int8_t)smp32; } free(audioDataS16); } else if (bitsPerSample == 24) // 24-BIT INTEGER SAMPLE { sampleLength /= 3; if (sampleLength > config.maxSampleLength*4) sampleLength = config.maxSampleLength*4; int32_t *audioDataS32 = (int32_t *)malloc(sampleLength * sizeof (int32_t)); if (audioDataS32 == NULL) { fclose(f); statusOutOfMemory(); return false; } // read sample data uint8_t *audioDataU8 = (uint8_t *)audioDataS32; for (int32_t i = 0; i < sampleLength; i++) { audioDataU8[0] = 0; fread(&audioDataU8[1], 3, 1, f); audioDataU8 += sizeof (int32_t); } // convert from stereo to mono (if needed) if (numChannels == 2) { sampleLength >>= 1; for (int32_t i = 0; i < sampleLength-1; i++) // add right channel to left channel { int64_t smp = ((int64_t)audioDataS32[(i << 1) + 0] + audioDataS32[(i << 1) + 1]) >> 1; audioDataS32[i] = (int32_t)smp; } } // 2x downsampling if (forceDownSampling) { downsample2x32Bit(audioDataS32, sampleLength); sampleLength >>= 1; } if (sampleLength > config.maxSampleLength) sampleLength = config.maxSampleLength; double dAmp = 1.0; if (forceDownSampling) // we already normalized { dAmp = INT8_MAX / (double)INT32_MAX; } else { const double dPeak = get32BitPeak(audioDataS32, sampleLength); if (dPeak > 0.0) dAmp = INT8_MAX / dPeak; } turnOffVoices(); for (int32_t i = 0; i < sampleLength; i++) { int32_t smp32 = (int32_t)round(audioDataS32[i] * dAmp); assert(smp32 >= -128 && smp32 <= 127); // shouldn't happen according to dAmp (but just in case) smpPtr[i] = (int8_t)smp32; } free(audioDataS32); } else if (audioFormat == WAV_FORMAT_PCM && bitsPerSample == 32) // 32-BIT INTEGER SAMPLE { sampleLength >>= 2; if (sampleLength > config.maxSampleLength*4) sampleLength = config.maxSampleLength*4; int32_t *audioDataS32 = (int32_t *)malloc(sampleLength * sizeof (int32_t)); if (audioDataS32 == NULL) { fclose(f); statusOutOfMemory(); return false; } // read sample data if (fread(audioDataS32, 4, sampleLength, f) != (size_t)sampleLength) { fclose(f); free(audioDataS32); displayErrorMsg("I/O ERROR !"); return false; } // convert from stereo to mono (if needed) if (numChannels == 2) { sampleLength >>= 1; for (int32_t i = 0; i < sampleLength-1; i++) // add right channel to left channel { int64_t smp = ((int64_t)audioDataS32[(i << 1) + 0] + audioDataS32[(i << 1) + 1]) >> 1; audioDataS32[i] = (int32_t)smp; } } // 2x downsampling if (forceDownSampling) { downsample2x32Bit(audioDataS32, sampleLength); sampleLength >>= 1; } if (sampleLength > config.maxSampleLength) sampleLength = config.maxSampleLength; double dAmp = 1.0; if (forceDownSampling) // we already normalized { dAmp = INT8_MAX / (double)INT32_MAX; } else { const double dPeak = get32BitPeak(audioDataS32, sampleLength); if (dPeak > 0.0) dAmp = INT8_MAX / dPeak; } turnOffVoices(); for (int32_t i = 0; i < sampleLength; i++) { int32_t smp32 = (int32_t)round(audioDataS32[i] * dAmp); assert(smp32 >= -128 && smp32 <= 127); // shouldn't happen according to dAmp (but just in case) smpPtr[i] = (int8_t)smp32; } free(audioDataS32); } else if (audioFormat == WAV_FORMAT_IEEE_FLOAT && bitsPerSample == 32) // 32-BIT FLOATING POINT SAMPLE { sampleLength >>= 2; if (sampleLength > config.maxSampleLength*4) sampleLength = config.maxSampleLength*4; uint32_t *audioDataU32 = (uint32_t *)malloc(sampleLength * sizeof (uint32_t)); if (audioDataU32 == NULL) { fclose(f); statusOutOfMemory(); return false; } // read sample data if (fread(audioDataU32, 4, sampleLength, f) != (size_t)sampleLength) { fclose(f); free(audioDataU32); displayErrorMsg("I/O ERROR !"); return false; } float *fAudioDataFloat = (float *)audioDataU32; // convert from stereo to mono (if needed) if (numChannels == 2) { sampleLength >>= 1; for (int32_t i = 0; i < sampleLength-1; i++) // add right channel to left channel fAudioDataFloat[i] = (fAudioDataFloat[(i * 2) + 0] + fAudioDataFloat[(i * 2) + 1]) * 0.5f; } // 2x downsampling if (forceDownSampling) { downsample2xFloat(fAudioDataFloat, sampleLength); sampleLength >>= 1; } if (sampleLength > config.maxSampleLength) sampleLength = config.maxSampleLength; float fAmp = 1.0f; const float fPeak = getFloatPeak(fAudioDataFloat, sampleLength); if (fPeak > 0.0f) fAmp = INT8_MAX / fPeak; turnOffVoices(); for (int32_t i = 0; i < sampleLength; i++) { int32_t smp32 = (int32_t)roundf(fAudioDataFloat[i] * fAmp); assert(smp32 >= -128 && smp32 <= 127); // shouldn't happen according to dAmp (but just in case) smpPtr[i] = (int8_t)smp32; } free(audioDataU32); } else if (audioFormat == WAV_FORMAT_IEEE_FLOAT && bitsPerSample == 64) // 64-BIT FLOATING POINT SAMPLE { sampleLength >>= 3; if (sampleLength > config.maxSampleLength*4) sampleLength = config.maxSampleLength*4; uint32_t *audioDataU32 = (uint32_t *)malloc(sampleLength * (sizeof (uint32_t) * 2)); if (audioDataU32 == NULL) { fclose(f); statusOutOfMemory(); return false; } // read sample data if (fread(audioDataU32, 8, sampleLength, f) != (size_t)sampleLength) { fclose(f); free(audioDataU32); displayErrorMsg("I/O ERROR !"); return false; } double *dAudioDataDouble = (double *)audioDataU32; // convert from stereo to mono (if needed) if (numChannels == 2) { sampleLength >>= 1; for (int32_t i = 0; i < sampleLength-1; i++) // add right channel to left channel dAudioDataDouble[i] = (dAudioDataDouble[(i * 2) + 0] + dAudioDataDouble[(i * 2) + 1]) * 0.5; } // 2x downsampling if (forceDownSampling) { downsample2xDouble(dAudioDataDouble, sampleLength); sampleLength >>= 1; } if (sampleLength > config.maxSampleLength) sampleLength = config.maxSampleLength; double dAmp = 1.0; const double dPeak = getDoublePeak(dAudioDataDouble, sampleLength); if (dPeak > 0.0) dAmp = INT8_MAX / dPeak; turnOffVoices(); for (int32_t i = 0; i < sampleLength; i++) { int32_t smp32 = (int32_t)round(dAudioDataDouble[i] * dAmp); assert(smp32 >= -128 && smp32 <= 127); // shouldn't happen according to dAmp (but just in case) smpPtr[i] = (int8_t)smp32; } free(audioDataU32); } if (sampleLength < config.maxSampleLength) // clear rest of sample data memset(&song->sampleData[s->offset + sampleLength], 0, config.maxSampleLength - sampleLength); // set sample length if (sampleLength & 1) { if (++sampleLength > config.maxSampleLength) sampleLength = config.maxSampleLength; } s->length = sampleLength; s->fineTune = 0; s->volume = 64; s->loopStart = 0; s->loopLength = 2; // ---- READ "smpl" chunk ---- if (smplPtr != 0 && smplLen > 52) { int32_t loopStart, loopEnd; uint32_t loopFlags; fseek(f, smplPtr + 28, SEEK_SET); // seek to first wanted byte fread(&loopFlags, 4, 1, f); fseek(f, 12, SEEK_CUR); fread(&loopStart, 4, 1, f); fread(&loopEnd, 4, 1, f); loopEnd++; if (forceDownSampling) { // we already downsampled 2x, so we're half the original length loopStart >>= 1; loopEnd >>= 1; } loopStart &= ~1; loopEnd &= ~1; if (loopFlags) { if (loopStart+(loopEnd-loopStart) <= s->length) { s->loopStart = loopStart; s->loopLength = loopEnd - loopStart; if (s->loopLength < 2) { s->loopStart = 0; s->loopLength = 2; } } } } // --------------------------- // ---- READ "xtra" chunk ---- if (xtraPtr != 0 && xtraLen >= 8) { int16_t tempVol; fseek(f, xtraPtr + 4, SEEK_SET); // seek to first wanted byte // volume (0..256) fseek(f, 2, SEEK_CUR); fread(&tempVol, 2, 1, f); if (tempVol > 256) tempVol = 256; tempVol >>= 2; // 0..256 -> 0..64 s->volume = (int8_t)tempVol; } // --------------------------- // ---- READ "INAM" chunk ---- if (inamPtr != 0 && inamLen > 0) { fseek(f, inamPtr, SEEK_SET); // seek to first wanted byte for (int32_t i = 0; i < 21; i++) { if (i < inamLen) s->text[i] = (char)fgetc(f); else s->text[i] = '\0'; } s->text[21] = '\0'; s->text[22] = '\0'; wavSampleNameFound = true; } // --------------------------- fclose(f); // copy over sample name if (!wavSampleNameFound) { int32_t nameLen = (int32_t)strlen(entryName); for (int32_t i = 0; i < 21; i++) s->text[i] = (i < nameLen) ? (char)entryName[i] : '\0'; s->text[21] = '\0'; s->text[22] = '\0'; } // remove .wav from end of sample name (if present) int32_t nameLen = (uint32_t)strlen(s->text); if (nameLen >= 4 && !_strnicmp(&s->text[nameLen-4], ".WAV", 4)) memset(&s->text[nameLen-4], '\0', 4); editor.sampleZero = false; editor.samplePos = 0; fixSampleBeep(s); fillSampleRedoBuffer(editor.currSample); if (ui.samplingBoxShown) { removeSamplingBox(); ui.samplingBoxShown = false; } updateCurrSample(); updateWindowTitle(MOD_IS_MODIFIED); return true; } static bool loadIFFSample(UNICHAR *fileName, char *entryName) { char tmpCharBuf[23]; uint16_t sampleRate; int32_t sampleLoopStart, sampleLoopLength; // zero out chunk pointers and lengths uint32_t vhdrPtr = 0; uint32_t vhdrLen = 0; uint32_t bodyPtr = 0; uint32_t bodyLen = 0; uint32_t namePtr = 0; int32_t nameLen = 0; moduleSample_t *s = &song->samples[editor.currSample]; FILE *f = UNICHAR_FOPEN(fileName, "rb"); if (f == NULL) { displayErrorMsg("FILE I/O ERROR !"); return false; } fseek(f, 0, SEEK_END); int32_t fileSize = ftell(f); if (fileSize == 0) { displayErrorMsg("IFF IS CORRUPT !"); return false; } fseek(f, 8, SEEK_SET); fread(tmpCharBuf, 1, 4, f); bool is16Bit = !strncmp(tmpCharBuf, "16SV", 4); int32_t sampleLength = 0; bool nameFound = false; uint32_t sampleVolume = 65536; // max volume fseek(f, 12, SEEK_SET); while (!feof(f) && ftell(f) < fileSize-12) { uint32_t blockName, blockSize; fread(&blockName, 4, 1, f); if (feof(f)) break; fread(&blockSize, 4, 1, f); if (feof(f)) break; blockName = SWAP32(blockName); blockSize = SWAP32(blockSize); switch (blockName) { case 0x56484452: // VHDR { vhdrPtr = ftell(f); vhdrLen = blockSize; } break; case 0x4E414D45: // NAME { namePtr = ftell(f); nameLen = blockSize; } break; case 0x424F4459: // BODY { bodyPtr = ftell(f); bodyLen = blockSize; } break; default: break; } fseek(f, blockSize + (blockSize & 1), SEEK_CUR); } if (vhdrPtr == 0 || vhdrLen < 20 || bodyPtr == 0) { fclose(f); displayErrorMsg("NOT A VALID IFF !"); return false; } // kludge for some really strange IFFs if (bodyLen == 0) bodyLen = fileSize - bodyPtr; if (bodyPtr+bodyLen > (uint32_t)fileSize) bodyLen = fileSize - bodyPtr; fseek(f, vhdrPtr, SEEK_SET); fread(&sampleLoopStart, 4, 1, f); sampleLoopStart = SWAP32(sampleLoopStart); fread(&sampleLoopLength, 4, 1, f); sampleLoopLength = SWAP32(sampleLoopLength); fseek(f, 4, SEEK_CUR); fread(&sampleRate, 2, 1, f); sampleRate = SWAP16(sampleRate); fseek(f, 1, SEEK_CUR); if (fgetc(f) != 0) // sample type { fclose(f); displayErrorMsg("UNSUPPORTED IFF !"); return false; } fread(&sampleVolume, 4, 1, f); sampleVolume = SWAP32(sampleVolume); if (sampleVolume > 65536) sampleVolume = 65536; sampleVolume = (sampleVolume + 512) / 1024; // rounded if (sampleVolume > 64) sampleVolume = 64; sampleLength = bodyLen; if (sampleLength == 0) { fclose(f); displayErrorMsg("NOT A VALID IFF !"); return false; } bool forceDownSampling = false; if (sampleRate > 22050 && !config.noDownsampleOnSmpLoad) { if (askBox(ASKBOX_DOWNSAMPLE, "DOWNSAMPLE ?")) forceDownSampling = true; } int32_t maxSampleLength = config.maxSampleLength; if (is16Bit) maxSampleLength *= 2; if (forceDownSampling) maxSampleLength *= 2; if (sampleLength > maxSampleLength) sampleLength = maxSampleLength; int8_t *sampleData = (int8_t *)malloc(sampleLength); if (sampleData == NULL) { fclose(f); statusOutOfMemory(); return false; } if (is16Bit) { sampleLength >>= 1; sampleLoopStart >>= 1; sampleLoopLength >>= 1; } if (forceDownSampling) { sampleLoopStart >>= 1; sampleLoopLength >>= 1; } turnOffVoices(); fseek(f, bodyPtr, SEEK_SET); if (is16Bit) // FT2-specific 16SV format (little-endian samples) { fread(sampleData, 1, sampleLength << 1, f); int16_t *ptr16 = (int16_t *)sampleData; // 2x downsampling if (forceDownSampling) { downsample2x16Bit(ptr16, sampleLength); sampleLength >>= 1; } if (sampleLength > config.maxSampleLength) sampleLength = config.maxSampleLength; double dAmp = 1.0; if (forceDownSampling) // we already normalized { dAmp = INT8_MAX / (double)INT16_MAX; } else { const double dPeak = get16BitPeak(ptr16, sampleLength); if (dPeak > 0.0) dAmp = INT8_MAX / dPeak; } int8_t *smpPtr = &song->sampleData[s->offset]; for (int32_t i = 0; i < sampleLength; i++) { int32_t smp32 = (int32_t)round(ptr16[i] * dAmp); assert(smp32 >= -128 && smp32 <= 127); // shouldn't happen according to dAmp (but just in case) smpPtr[i] = (int8_t)smp32; } } else { fread(sampleData, 1, sampleLength, f); // 2x downsampling if (forceDownSampling) { downsample2x8Bit(sampleData, sampleLength); sampleLength >>= 1; } if (sampleLength > config.maxSampleLength) sampleLength = config.maxSampleLength; memcpy(&song->sampleData[s->offset], sampleData, sampleLength); } free(sampleData); if (sampleLength < config.maxSampleLength) // clear rest of sample data memset(&song->sampleData[s->offset + sampleLength], 0, config.maxSampleLength - sampleLength); // set sample length if (sampleLength & 1) { if (++sampleLength > config.maxSampleLength) sampleLength = config.maxSampleLength; } sampleLoopStart &= ~1; sampleLoopLength &= ~1; if (sampleLoopLength < 2) { sampleLoopStart = 0; sampleLoopLength = 2; } if (sampleLoopStart >= sampleLength || sampleLoopLength > sampleLength) { sampleLoopStart = 0; sampleLoopLength = 2; } if (sampleLoopStart+sampleLoopLength > sampleLength) { sampleLoopStart = 0; sampleLoopLength = 2; } if (sampleLoopStart > sampleLength-2) { sampleLoopStart = 0; sampleLoopLength = 2; } // set sample attributes s->volume = (int8_t)sampleVolume; s->fineTune = 0; s->length = sampleLength; s->loopStart = sampleLoopStart; s->loopLength = sampleLoopLength; // read name if (namePtr != 0 && nameLen > 0) { fseek(f, namePtr, SEEK_SET); memset(tmpCharBuf, 0, sizeof (tmpCharBuf)); if (nameLen > 21) { fread(tmpCharBuf, 1, 21, f); fseek(f, nameLen - 21, SEEK_CUR); } else { fread(tmpCharBuf, 1, nameLen, f); } nameFound = true; } fclose(f); // copy over sample name memset(s->text, '\0', sizeof (s->text)); if (nameFound) { nameLen = (uint32_t)strlen(tmpCharBuf); if (nameLen > 21) nameLen = 21; memcpy(s->text, tmpCharBuf, nameLen); } else { nameLen = (uint32_t)strlen(entryName); if (nameLen > 21) nameLen = 21; memcpy(s->text, entryName, nameLen); } // remove .iff from end of sample name (if present) nameLen = (uint32_t)strlen(s->text); if (nameLen >= 4 && !strncmp(&s->text[nameLen-4], ".IFF", 4)) memset(&s->text[nameLen-4], '\0', 4); editor.sampleZero = false; editor.samplePos = 0; fixSampleBeep(s); fillSampleRedoBuffer(editor.currSample); updateCurrSample(); updateWindowTitle(MOD_IS_MODIFIED); return false; } static bool loadRAWSample(UNICHAR *fileName, char *entryName) { moduleSample_t *s = &song->samples[editor.currSample]; FILE *f = UNICHAR_FOPEN(fileName, "rb"); if (f == NULL) { displayErrorMsg("FILE I/O ERROR !"); return false; } fseek(f, 0, SEEK_END); int32_t fileSize = ftell(f); fseek(f, 0, SEEK_SET); fileSize &= ~1; if (fileSize > config.maxSampleLength) fileSize = config.maxSampleLength; turnOffVoices(); fread(&song->sampleData[s->offset], 1, fileSize, f); fclose(f); if (fileSize < config.maxSampleLength) memset(&song->sampleData[s->offset + fileSize], 0, config.maxSampleLength - fileSize); // set sample attributes s->volume = 64; s->fineTune = 0; s->length = fileSize; s->loopStart = 0; s->loopLength = 2; // copy over sample name int32_t nameLen = (uint32_t)strlen(entryName); for (int32_t i = 0; i < 21; i++) s->text[i] = (i < nameLen) ? (char)entryName[i] : '\0'; s->text[21] = '\0'; s->text[22] = '\0'; editor.sampleZero = false; editor.samplePos = 0; fixSampleBeep(s); fillSampleRedoBuffer(editor.currSample); if (ui.samplingBoxShown) { removeSamplingBox(); ui.samplingBoxShown = false; } updateCurrSample(); updateWindowTitle(MOD_IS_MODIFIED); return true; } static int32_t getAIFFRate(uint8_t *in) { int32_t exp = (int32_t)(((in[0] & 0x7F) << 8) | in[1]); uint32_t lo = (in[2] << 24) | (in[3] << 16) | (in[4] << 8) | in[5]; uint32_t hi = (in[6] << 24) | (in[7] << 16) | (in[8] << 8) | in[9]; if (exp == 0 && lo == 0 && hi == 0) return 0; exp -= 16383; double dOut = ldexp(lo, -31 + exp) + ldexp(hi, -63 + exp); return (int32_t)(dOut + 0.5); } static bool loadAIFFSample(UNICHAR *fileName, char *entryName) { uint8_t sampleRateBytes[10]; uint16_t bitDepth, numChannels; uint32_t offset, sampleRate; // zero out chunk pointers and lengths uint32_t commPtr = 0; uint32_t commLen = 0; uint32_t ssndPtr = 0; uint32_t ssndLen = 0; bool unsigned8bit = false; moduleSample_t *s = &song->samples[editor.currSample]; FILE *f = UNICHAR_FOPEN(fileName, "rb"); if (f == NULL) { displayErrorMsg("FILE I/O ERROR !"); return false; } fseek(f, 0, SEEK_END); int32_t fileSize = ftell(f); if (fileSize == 0) { displayErrorMsg("AIFF IS CORRUPT !"); return false; } fseek(f, 12, SEEK_SET); while (!feof(f) && ftell(f) < fileSize-12) { uint32_t blockName, blockSize; fread(&blockName, 4, 1, f); if (feof(f)) break; fread(&blockSize, 4, 1, f); if (feof(f)) break; blockName = SWAP32(blockName); blockSize = SWAP32(blockSize); switch (blockName) { case 0x434F4D4D: // "COMM" { commPtr = ftell(f); commLen = blockSize; } break; case 0x53534E44: // "SSND" { ssndPtr = ftell(f); ssndLen = blockSize; } break; default: break; } fseek(f, blockSize + (blockSize & 1), SEEK_CUR); } if (commPtr == 0 || commLen < 18 || ssndPtr == 0) { fclose(f); displayErrorMsg("NOT A VALID AIFF!"); return false; } // kludge for some really strange AIFFs if (ssndLen == 0) ssndLen = fileSize - ssndPtr; if (ssndPtr+ssndLen > (uint32_t)fileSize) ssndLen = fileSize - ssndPtr; fseek(f, commPtr, SEEK_SET); fread(&numChannels, 2, 1, f); numChannels = SWAP16(numChannels); fseek(f, 4, SEEK_CUR); fread(&bitDepth, 2, 1, f); bitDepth = SWAP16(bitDepth); fread(sampleRateBytes, 1, 10, f); fseek(f, 4 + 2 + 1, SEEK_CUR); if (numChannels != 1 && numChannels != 2) // sample type { fclose(f); displayErrorMsg("UNSUPPORTED AIFF!"); return false; } if (bitDepth != 8 && bitDepth != 16 && bitDepth != 24 && bitDepth != 32) { fclose(f); displayErrorMsg("UNSUPPORTED AIFF!"); return false; } // read compression type (if present) if (commLen > 18) { char compType[4]; fread(&compType, 1, 4, f); if (memcmp(compType, "NONE", 4)) { fclose(f); displayErrorMsg("UNSUPPORTED AIFF!"); return false; } } sampleRate = getAIFFRate(sampleRateBytes); // sample data chunk fseek(f, ssndPtr, SEEK_SET); fread(&offset, 4, 1, f); if (offset > 0) { fclose(f); displayErrorMsg("UNSUPPORTED AIFF!"); return false; } fseek(f, 4, SEEK_CUR); ssndLen -= 8; // don't include offset and blockSize datas int32_t sampleLength = ssndLen; if (sampleLength == 0) { fclose(f); displayErrorMsg("NOT A VALID AIFF!"); return false; } bool forceDownSampling = false; if (sampleRate > 22050 && !config.noDownsampleOnSmpLoad) { if (askBox(ASKBOX_DOWNSAMPLE, "DOWNSAMPLE ?")) forceDownSampling = true; } int8_t *smpPtr = &song->sampleData[editor.currSample * config.maxSampleLength]; if (bitDepth == 8) // 8-BIT INTEGER SAMPLE { if (sampleLength > config.maxSampleLength*4) sampleLength = config.maxSampleLength*4; int8_t *audioDataS8 = (int8_t *)malloc(sampleLength * sizeof (int8_t)); if (audioDataS8 == NULL) { fclose(f); statusOutOfMemory(); return false; } // read sample data if (fread(audioDataS8, 1, sampleLength, f) != (size_t)sampleLength) { fclose(f); free(audioDataS8); displayErrorMsg("I/O ERROR !"); return false; } if (unsigned8bit) { for (int32_t i = 0; i < sampleLength; i++) audioDataS8[i] ^= 0x80; } // convert from stereo to mono (if needed) if (numChannels == 2) { sampleLength >>= 1; for (int32_t i = 0; i < sampleLength-1; i++) // add right channel to left channel audioDataS8[i] = (audioDataS8[(i * 2) + 0] + audioDataS8[(i * 2) + 1]) >> 1;; } // 2x downsampling if (forceDownSampling) { downsample2x8Bit(audioDataS8, sampleLength); sampleLength >>= 1; } if (sampleLength > config.maxSampleLength) sampleLength = config.maxSampleLength; turnOffVoices(); for (int32_t i = 0; i < sampleLength; i++) smpPtr[i] = audioDataS8[i]; free(audioDataS8); } else if (bitDepth == 16) // 16-BIT INTEGER SAMPLE { sampleLength >>= 1; if (sampleLength > config.maxSampleLength*4) sampleLength = config.maxSampleLength*4; int16_t *audioDataS16 = (int16_t *)malloc(sampleLength * sizeof (int16_t)); if (audioDataS16 == NULL) { fclose(f); statusOutOfMemory(); return false; } // read sample data if (fread(audioDataS16, 2, sampleLength, f) != (size_t)sampleLength) { fclose(f); free(audioDataS16); displayErrorMsg("I/O ERROR !"); return false; } // fix endianness for (int32_t i = 0; i < sampleLength; i++) audioDataS16[i] = SWAP16(audioDataS16[i]); // convert from stereo to mono (if needed) if (numChannels == 2) { sampleLength >>= 1; for (int32_t i = 0; i < sampleLength-1; i++) // add right channel to left channel audioDataS16[i] = (audioDataS16[(i << 1) + 0] + audioDataS16[(i << 1) + 1]) >> 1; } // 2x downsampling if (forceDownSampling) { downsample2x16Bit(audioDataS16, sampleLength); sampleLength >>= 1; } if (sampleLength > config.maxSampleLength) sampleLength = config.maxSampleLength; double dAmp = 1.0; if (forceDownSampling) // we already normalized { dAmp = INT8_MAX / (double)INT16_MAX; } else { const double dPeak = get16BitPeak(audioDataS16, sampleLength); if (dPeak > 0.0) dAmp = INT8_MAX / dPeak; } turnOffVoices(); for (int32_t i = 0; i < sampleLength; i++) { int32_t smp32 = (int32_t)round(audioDataS16[i] * dAmp); assert(smp32 >= -128 && smp32 <= 127); // shouldn't happen according to dAmp (but just in case) smpPtr[i] = (int8_t)smp32; } free(audioDataS16); } else if (bitDepth == 24) // 24-BIT INTEGER SAMPLE { sampleLength /= 3; if (sampleLength > config.maxSampleLength*4) sampleLength = config.maxSampleLength*4; int32_t *audioDataS32 = (int32_t *)malloc(sampleLength * sizeof (int32_t)); if (audioDataS32 == NULL) { fclose(f); statusOutOfMemory(); return false; } // read sample data if (fread(&audioDataS32[sampleLength >> 2], 3, sampleLength, f) != (size_t)sampleLength) { fclose(f); free(audioDataS32); displayErrorMsg("I/O ERROR !"); return false; } // convert to 32-bit uint8_t *audioDataU8 = (uint8_t *)audioDataS32 + sampleLength; for (int32_t i = 0; i < sampleLength; i++) { audioDataS32[i] = (audioDataU8[0] << 24) | (audioDataU8[1] << 16) | (audioDataU8[2] << 8); audioDataU8 += 3; } // convert from stereo to mono (if needed) if (numChannels == 2) { sampleLength >>= 1; for (int32_t i = 0; i < sampleLength-1; i++) // add right channel to left channel { int64_t smp = ((int64_t)audioDataS32[(i << 1) + 0] + audioDataS32[(i << 1) + 1]) >> 1; audioDataS32[i] = (int32_t)smp; } } // 2x downsampling if (forceDownSampling) { downsample2x32Bit(audioDataS32, sampleLength); sampleLength >>= 1; } if (sampleLength > config.maxSampleLength) sampleLength = config.maxSampleLength; double dAmp = 1.0; if (forceDownSampling) // we already normalized { dAmp = INT8_MAX / (double)INT32_MAX; } else { const double dPeak = get32BitPeak(audioDataS32, sampleLength); if (dPeak > 0.0) dAmp = INT8_MAX / dPeak; } turnOffVoices(); for (int32_t i = 0; i < sampleLength; i++) { int32_t smp32 = (int32_t)round(audioDataS32[i] * dAmp); smpPtr[i] = (int8_t)smp32; } free(audioDataS32); } else if (bitDepth == 32) // 32-BIT INTEGER SAMPLE { sampleLength >>= 2; if (sampleLength > config.maxSampleLength*4) sampleLength = config.maxSampleLength*4; int32_t *audioDataS32 = (int32_t *)malloc(sampleLength * sizeof (int32_t)); if (audioDataS32 == NULL) { fclose(f); statusOutOfMemory(); return false; } // read sample data if (fread(audioDataS32, 4, sampleLength, f) != (size_t)sampleLength) { fclose(f); free(audioDataS32); displayErrorMsg("I/O ERROR !"); return false; } // fix endianness for (int32_t i = 0; i < sampleLength; i++) audioDataS32[i] = SWAP32(audioDataS32[i]); // convert from stereo to mono (if needed) if (numChannels == 2) { sampleLength >>= 1; for (int32_t i = 0; i < sampleLength-1; i++) // add right channel to left channel { int64_t smp = ((int64_t)audioDataS32[(i << 1) + 0] + audioDataS32[(i << 1) + 1]) >> 1; audioDataS32[i] = (int32_t)smp; } } // 2x downsampling if (forceDownSampling) { downsample2x32Bit(audioDataS32, sampleLength); sampleLength >>= 1; } if (sampleLength > config.maxSampleLength) sampleLength = config.maxSampleLength; double dAmp = 1.0; if (forceDownSampling) // we already normalized { dAmp = INT8_MAX / (double)INT32_MAX; } else { const double dPeak = get32BitPeak(audioDataS32, sampleLength); if (dPeak > 0.0) dAmp = INT8_MAX / dPeak; } turnOffVoices(); for (int32_t i = 0; i < sampleLength; i++) { int32_t smp32 = (int32_t)round(audioDataS32[i] * dAmp); smpPtr[i] = (int8_t)smp32; } free(audioDataS32); } if (sampleLength < config.maxSampleLength) // clear rest of sample data memset(&song->sampleData[s->offset + sampleLength], 0, config.maxSampleLength - sampleLength); // set sample length if (sampleLength & 1) { if (++sampleLength > config.maxSampleLength) sampleLength = config.maxSampleLength; } s->length = sampleLength; s->fineTune = 0; s->volume = 64; s->loopStart = 0; s->loopLength = 2; fclose(f); // copy over sample name int32_t nameLen = (int32_t)strlen(entryName); for (int32_t i = 0; i < 21; i++) s->text[i] = (i < nameLen) ? (char)entryName[i] : '\0'; s->text[21] = '\0'; s->text[22] = '\0'; // remove .aiff from end of sample name (if present) nameLen = (uint32_t)strlen(s->text); if (nameLen >= 5 && !_strnicmp(&s->text[nameLen-5], ".AIFF", 5)) memset(&s->text[nameLen-5], '\0', 5); editor.sampleZero = false; editor.samplePos = 0; fixSampleBeep(s); fillSampleRedoBuffer(editor.currSample); if (ui.samplingBoxShown) { removeSamplingBox(); ui.samplingBoxShown = false; } updateCurrSample(); updateWindowTitle(MOD_IS_MODIFIED); return true; } bool loadSample(UNICHAR *fileName, char *entryName) { if (editor.sampleZero) { statusNotSampleZero(); return false; } FILE *f = UNICHAR_FOPEN(fileName, "rb"); if (f == NULL) { displayErrorMsg("FILE I/O ERROR !"); return false; } fseek(f, 0, SEEK_END); uint32_t fileSize = ftell(f); fseek(f, 0, SEEK_SET); // first, check heades before we eventually load as RAW if (fileSize > 16) { uint32_t ID; fread(&ID, 4, 1, f); /* Reject FLAC files, since they are not supported. ** This is a dumb test since any sample *could* start ** with "fLaC", but in 99.999% of cases it won't happen. */ if (ID == 0x43614C66) // "fLaC" { displayErrorMsg("NOT SUPPORTED !"); return false; } // check if it's actually a WAV sample if (ID == 0x46464952) // "RIFF" { fseek(f, 4, SEEK_CUR); fread(&ID, 4, 1, f); if (ID == 0x45564157) // "WAVE" { fclose(f); return loadWAVSample(fileName, entryName); } } else if (ID == 0x4D524F46) // "FORM" { fseek(f, 4, SEEK_CUR); fread(&ID, 4, 1, f); // check if it's an Amiga IFF sample if (ID == 0x58565338 || ID == 0x56533631) // "8SVX" (normal) and "16SV" (FT2 sample) { fclose(f); return loadIFFSample(fileName, entryName); } // check if it's an AIFF sample else if (ID == 0x46464941) // "AIFF" { fclose(f); return loadAIFFSample(fileName, entryName); } else if (ID == 0x43464941) // "AIFC" (compressed AIFF) { fclose(f); displayErrorMsg("UNSUPPORTED AIFF!"); return false; } } } // nope, continue loading as RAW fclose(f); return loadRAWSample(fileName, entryName); }