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TAD: better bit allocation using statistics

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minjaesong
2025-10-26 18:16:28 +09:00
parent 9fcb7fc95c
commit 370d511f44
5 changed files with 167 additions and 177 deletions
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18
video_encoder/encoder_tad_standalone.c
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@@ -47,7 +47,8 @@ static void print_usage(const char *prog_name) {
printf("Options:\n");
printf(" -i <file> Input audio file (any format supported by FFmpeg)\n");
printf(" -o <file> Output TAD32 file\n");
printf(" -q <0-5> Quality level (default: %d, higher = better quality)\n", TAD32_QUALITY_DEFAULT);
printf(" -q <bits> Quantization bits (default: 7, range: 4-8)\n");
printf(" Higher = more precision, larger files\n");
printf(" --no-zstd Disable Zstd compression\n");
printf(" -v Verbose output\n");
printf(" -h, --help Show this help\n");
@@ -62,6 +63,7 @@ int main(int argc, char *argv[]) {
char *input_file = NULL;
char *output_file = NULL;
int quality = TAD32_QUALITY_DEFAULT;
int quant_bits = 7; // Default QUANT_BITS
int use_zstd = 1;
int verbose = 0;
@@ -83,10 +85,9 @@ int main(int argc, char *argv[]) {
output_file = optarg;
break;
case 'q':
quality = atoi(optarg);
if (quality < TAD32_QUALITY_MIN || quality > TAD32_QUALITY_MAX) {
fprintf(stderr, "Error: Quality must be between %d and %d\n",
TAD32_QUALITY_MIN, TAD32_QUALITY_MAX);
quant_bits = atoi(optarg);
if (quant_bits < 4 || quant_bits > 8) {
fprintf(stderr, "Error: Quantization bits must be between 4 and 8\n");
return 1;
}
break;
@@ -115,7 +116,6 @@ int main(int argc, char *argv[]) {
printf("%s\n", ENCODER_VENDOR_STRING);
printf("Input: %s\n", input_file);
printf("Output: %s\n", output_file);
printf("Quality: %d\n", quality);
printf("Significance map: 2-bit\n");
printf("Zstd compression: %s\n", use_zstd ? "enabled" : "disabled");
}
@@ -242,8 +242,8 @@ int main(int argc, char *argv[]) {
}
// Encode chunk using linked tad32_encode_chunk() from encoder_tad32.c
size_t encoded_size = tad32_encode_chunk(chunk_buffer, TAD32_DEFAULT_CHUNK_SIZE, quality,
use_zstd, output_buffer);
size_t encoded_size = tad32_encode_chunk(chunk_buffer, TAD32_DEFAULT_CHUNK_SIZE,
quant_bits, use_zstd, output_buffer);
if (encoded_size == 0) {
fprintf(stderr, "Error: Chunk encoding failed at chunk %zu\n", chunk_idx);
@@ -291,7 +291,7 @@ int main(int argc, char *argv[]) {
compression_ratio, (total_output_size * 100.0) / pcmu8_size);
if (compression_ratio < 1.8) {
printf("Warning: Compression ratio below 2:1 target. Try higher quality or different settings.\n");
printf("Warning: Compression ratio below 2:1 target. Try lower quantisation bits or different settings.\n");
}
return 0;