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TAV: TAD integration wip

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minjaesong
2025-10-30 00:34:15 +09:00
parent 4a6edeca09
commit 480d2d8538
6 changed files with 304 additions and 109 deletions
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26
video_encoder/encoder_tad.h
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@@ -19,14 +19,28 @@
#define TAD32_QUALITY_DEFAULT 3
#define TAD32_ZSTD_LEVEL 15
/**
* Convert quality level (0-5) to max_index for quantization
* Quality 0 = very low quality, small file (max_index=7, 3-bit)
* Quality 1 = low quality (max_index=15, 4-bit)
* Quality 2 = medium quality (max_index=31, 5-bit)
* Quality 3 = good quality (max_index=63, 6-bit) [DEFAULT]
* Quality 4 = high quality (max_index=127, 7-bit)
* Quality 5 = very high quality (max_index=255, 8-bit)
*/
static inline int tad32_quality_to_max_index(int quality) {
static const int quality_map[6] = {31, 35, 39, 47, 56, 89};
if (quality < 0) quality = 0;
if (quality > 5) quality = 5;
return quality_map[quality];
}
/**
* Encode audio chunk with TAD32 codec (PCM32f version)
*
* @param pcm32_stereo Input PCM32fLE stereo samples (interleaved L,R)
* @param num_samples Number of samples per channel (min 1024)
* @param quant_bits Quantization bits 4-12 (default: 7)
* @param use_zstd 1=enable Zstd compression, 0=disable
* @param use_twobitmap 1=enable twobitmap encoding, 0=raw int8_t storage
* @param max_index Maximum quantization index (7=3bit, 15=4bit, 31=5bit, 63=6bit, 127=7bit)
* @param quantiser_scale Quantiser scaling factor (1.0=baseline, 2.0=2x coarser quantization)
* Higher values = more aggressive quantization = smaller files
* @param output Output buffer (must be large enough)
@@ -34,12 +48,12 @@
*
* Output format:
* uint16 sample_count (samples per channel)
* uint8 quant_bits (quantization bits used)
* uint8 max_index (maximum quantization index)
* uint32 payload_size (bytes in payload)
* * payload (encoded M/S data, optionally Zstd-compressed)
* * payload (encoded M/S data, Zstd-compressed with 2-bit twobitmap)
*/
size_t tad32_encode_chunk(const float *pcm32_stereo, size_t num_samples,
int quant_bits,
int max_index,
float quantiser_scale, uint8_t *output);
/**