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TAD: now processing entirely in float

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minjaesong
2025-10-24 05:31:38 +09:00
parent a9319fd812
commit 9dc71095a0
5 changed files with 139 additions and 319 deletions
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38
video_encoder/encoder_tad.h
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@@ -1,40 +1,40 @@
#ifndef TAD_ENCODER_H
#define TAD_ENCODER_H
#ifndef TAD32_ENCODER_H
#define TAD32_ENCODER_H
#include <stdint.h>
#include <stddef.h>
// TAD (Terrarum Advanced Audio) Encoder
// TAD32 (Terrarum Advanced Audio - PCM32f version) Encoder
// DWT-based perceptual audio codec for TSVM
// Alternative version: PCM32f throughout encoding, PCM8 conversion only at decoder
// Constants
#define TAD_MIN_CHUNK_SIZE 1024 // Minimum: 1024 samples (supports non-power-of-2)
#define TAD_SAMPLE_RATE 32000
#define TAD_CHANNELS 2 // Stereo
#define TAD_SIGMAP_2BIT 1 // 2-bit: 00=0, 01=+1, 10=-1, 11=other
#define TAD_QUALITY_MIN 0
#define TAD_QUALITY_MAX 5
#define TAD_QUALITY_DEFAULT 3
#define TAD_ZSTD_LEVEL 7
#define TAD32_COEFF_SCALAR 1024.0f
#define TAD32_MIN_CHUNK_SIZE 1024 // Minimum: 1024 samples
#define TAD32_SAMPLE_RATE 32000
#define TAD32_CHANNELS 2 // Stereo
#define TAD32_SIGMAP_2BIT 1 // 2-bit: 00=0, 01=+1, 10=-1, 11=other
#define TAD32_QUALITY_MIN 0
#define TAD32_QUALITY_MAX 5
#define TAD32_QUALITY_DEFAULT 3
#define TAD32_ZSTD_LEVEL 7
/**
* Encode audio chunk with TAD codec
* Encode audio chunk with TAD32 codec (PCM32f version)
*
* @param pcm16_stereo Input PCM16LE stereo samples (interleaved L,R)
* @param num_samples Number of samples per channel (supports non-power-of-2, min 1024)
* @param pcm32_stereo Input PCM32fLE stereo samples (interleaved L,R)
* @param num_samples Number of samples per channel (min 1024)
* @param quality Quality level 0-5 (0=lowest, 5=highest)
* @param use_zstd 1=enable Zstd compression, 0=disable
* @param output Output buffer (must be large enough)
* @return Number of bytes written to output, or 0 on error
*
* Output format:
* uint8 sigmap_method (always 1 = 2-bit twobitmap)
* uint8 compressed_flag (1=Zstd, 0=raw)
* uint16 sample_count (samples per channel)
* uint32 payload_size (bytes in payload)
* * payload (encoded M/S data, optionally Zstd-compressed)
*/
size_t tad_encode_chunk(const int16_t *pcm16_stereo, size_t num_samples, int quality,
int use_zstd, uint8_t *output);
size_t tad32_encode_chunk(const float *pcm32_stereo, size_t num_samples, int quality,
int use_zstd, uint8_t *output);
#endif // TAD_ENCODER_H
#endif // TAD32_ENCODER_H