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103 lines
2.3 KiB
C++
103 lines
2.3 KiB
C++
/**
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* Jingga
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*
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* @copyright Jingga
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* @license OMS License 2.0
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* @version 1.0.0
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* @link https://jingga.app
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*/
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#ifndef TOS_AUDIO_C
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#define TOS_AUDIO_C
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#include "../utils/StringUtils.h"
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#include "../memory/RingMemory.h"
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#include "../system/FileUtils.cpp"
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#include "Audio.h"
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#include "AudioSetting.h"
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#include "Wav.h"
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void audio_from_file(Audio* audio, const char* path, RingMemory* ring)
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{
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FileBody file;
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file_read(path, &file, ring);
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ASSERT_SIMPLE(file.size);
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if (str_ends_with(path, ".wav")) {
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wav_from_data(file.content, (uint32) file.size, audio, ring);
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}
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}
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int32 audio_data_size(const Audio* audio)
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{
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return (int32) (audio->size
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+ sizeof(audio->sample_rate)
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+ sizeof(audio->channels)
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// + sizeof(audio->bloc_size) bit fiddling
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+ sizeof(audio->size)
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);
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}
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inline
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uint32 audio_header_from_data(const byte* data, Audio* audio)
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{
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const byte* start = data;
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audio->sample_rate = SWAP_ENDIAN_LITTLE(*((uint16 *) data));
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data += sizeof(audio->sample_rate);
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audio->channels = (*data >> 4) & 0x0F;
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audio->bloc_size = *data & 0x0F;
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data += sizeof(byte);
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audio->sample_size = audio->channels * audio->bloc_size;
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audio->byte_per_sec = audio->sample_rate * audio->sample_size;
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audio->size = SWAP_ENDIAN_LITTLE(*((uint32 *) data));
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data += sizeof(audio->size);
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return (int32) (data - start);
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}
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inline
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uint32 audio_header_to_data(const Audio* audio, byte* data)
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{
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byte* start = data;
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*((uint16 *) data) = SWAP_ENDIAN_LITTLE(audio->sample_rate);
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data += sizeof(audio->sample_rate);
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// Reducing data footprint through bit fiddling
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*data = ((audio->channels & 0x0F) << 4) | (audio->bloc_size & 0x0F);
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data += sizeof(byte);
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*((uint32 *) data) = SWAP_ENDIAN_LITTLE(audio->size);
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data += sizeof(audio->size);
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return (int32) (data - start);
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}
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uint32 audio_from_data(const byte* data, Audio* audio)
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{
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data += audio_header_from_data(data, audio);
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memcpy(audio->data, data, audio->size);
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data += audio->size;
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return audio_data_size(audio);
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}
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uint32 audio_to_data(const Audio* audio, byte* data)
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{
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data += audio_header_to_data(audio, data);
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memcpy(data, audio->data, audio->size);
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data += audio->size;
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return audio_data_size(audio);
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}
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#endif
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