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Add support for 64-bit float wav files

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This commit is contained in:
ailurux
2024-04-22 09:48:08 +10:00
parent 7f630cebdd
commit dfccf56f34
1 changed files with 17 additions and 6 deletions
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src/codecs/wav.cpp
+17 -6
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@@ -57,6 +57,20 @@ static int16_t convert_f32_to_16_bit(cpp::span<const std::byte> bytes) {
return sample::FromDouble(*fval);
}
static int16_t convert_f64_to_16_bit(cpp::span<const std::byte> bytes) {
uint64_t val = 0;
val = (uint8_t)bytes[7];
val = (val << 8) | (uint8_t)bytes[6];
val = (val << 8) | (uint8_t)bytes[5];
val = (val << 8) | (uint8_t)bytes[4];
val = (val << 8) | (uint8_t)bytes[3];
val = (val << 8) | (uint8_t)bytes[2];
val = (val << 8) | (uint8_t)bytes[1];
val = (val << 8) | (uint8_t)bytes[0];
double* fval = reinterpret_cast<double*>(&val);
return sample::FromDouble(*fval);
}
static int16_t convert_to_16_bit(cpp::span<const std::byte> bytes) {
int depth = bytes.size();
int32_t val = 0;
@@ -193,12 +207,6 @@ auto WavDecoder::OpenStream(std::shared_ptr<IStream> input,uint32_t offset)
}
}
// 64 bit float is not implemented yet, make sure we're not letting it through
if (GetFormat() == kWaveFormatIEEEFloat && bytes_per_sample_ == 8) {
ESP_LOGW(kTag, "WAVE 64-Bit Float not supported");
return cpp::fail(Error::kUnsupportedFormat);
}
int64_t data_offset = offset * samples_per_second * bytes_per_sample_;
// Seek track to start of data
@@ -237,6 +245,9 @@ auto WavDecoder::DecodeTo(cpp::span<sample::Sample> output)
if (bytes_per_sample_ == 4) {
output[i] = convert_f32_to_16_bit(data);
}
if (bytes_per_sample_ == 8) {
output[i] = convert_f64_to_16_bit(data);
}
}
}