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default to 192kbps for mp3

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Concedo 2026-05-28 14:55:59 +08:00
parent 6c1b944129
commit b6f56b4431
1 changed files with 9 additions and 9 deletions
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18
otherarch/utils.cpp
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@ -641,7 +641,7 @@ std::string save_stereo_mp3_base64(const std::vector<float> & raw_audio,int T_au
enc_T = (int)resampled.size() / 2;
}
const int kbps = 128;
const int kbps = 192;
// Encode PCM [offset, offset+len) with optional warm-up.
// warmup=true primes filterbank/MDCT/psy with the 1152 PCM samples
@ -706,17 +706,17 @@ std::string save_stereo_mp3_base64(const std::vector<float> & raw_audio,int T_au
// Multi-threaded path: partition audio, encode chunks in parallel
struct Chunk { int offset; int n_samples; };
std::vector<Chunk> chunks(n_threads);
std::vector<Chunk> chunks(n_threads);
{
constexpr int FRAME = 1152;
int pos = 0;
for (int i = 0; i < n_threads; i++) {
// Compute ideal boundaries
int start = (int)(((int64_t)enc_T * i) / n_threads);
int end = (int)(((int64_t)enc_T * (i + 1)) / n_threads);
// Align internal boundaries down to frame boundaries
if (i != 0) {
start = (start / FRAME) * FRAME;
@ -724,7 +724,7 @@ std::string save_stereo_mp3_base64(const std::vector<float> & raw_audio,int T_au
if (i != n_threads - 1) {
end = (end / FRAME) * FRAME;
}
// Enforce monotonicity
if (start < pos) {
start = pos;
@ -732,13 +732,13 @@ std::string save_stereo_mp3_base64(const std::vector<float> & raw_audio,int T_au
if (end < start) {
end = start;
}
chunks[i].offset = start;
chunks[i].n_samples = end - start;
pos = end;
}
// Ensure final chunk reaches exact end
if (!chunks.empty()) {
chunks.back().n_samples = enc_T - chunks.back().offset;