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Update qoa.h

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Ray
2026-03-29 21:21:11 +02:00
parent d5326fe880
commit e5f0c9f8b1
1 changed files with 30 additions and 30 deletions
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10
src/external/qoa.h vendored
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@ -387,7 +387,7 @@ unsigned int qoa_encode_frame(const short *sample_data, qoa_desc *qoa, unsigned
int slice_start = sample_index * channels + c;
int slice_end = (sample_index + slice_len) * channels + c;
/* Brute for search for the best scalefactor. Just go through all
/* Brute force search for the best scalefactor. Just go through all
16 scalefactors, encode all samples for the current slice and
meassure the total squared error. */
qoa_uint64_t best_rank = -1;
@ -402,7 +402,7 @@ unsigned int qoa_encode_frame(const short *sample_data, qoa_desc *qoa, unsigned
/* There is a strong correlation between the scalefactors of
neighboring slices. As an optimization, start testing
the best scalefactor of the previous slice first. */
int scalefactor = (sfi + prev_scalefactor[c]) % 16;
int scalefactor = (sfi + prev_scalefactor[c]) & (16 - 1);
/* We have to reset the LMS state to the last known good one
before trying each scalefactor, as each pass updates the LMS
@ -500,7 +500,7 @@ void *qoa_encode(const short *sample_data, qoa_desc *qoa, unsigned int *out_len)
num_frames * QOA_LMS_LEN * 4 * qoa->channels + /* 4 * 4 bytes lms state per channel */
num_slices * 8 * qoa->channels; /* 8 byte slices */
unsigned char *bytes = (unsigned char *)QOA_MALLOC(encoded_size);
unsigned char *bytes = QOA_MALLOC(encoded_size);
for (unsigned int c = 0; c < qoa->channels; c++) {
/* Set the initial LMS weights to {0, 0, -1, 2}. This helps with the
@ -657,7 +657,7 @@ short *qoa_decode(const unsigned char *bytes, int size, qoa_desc *qoa) {
/* Calculate the required size of the sample buffer and allocate */
int total_samples = qoa->samples * qoa->channels;
short *sample_data = (short *)QOA_MALLOC(total_samples * sizeof(short));
short *sample_data = QOA_MALLOC(total_samples * sizeof(short));
unsigned int sample_index = 0;
unsigned int frame_len;
@ -733,7 +733,7 @@ void *qoa_read(const char *filename, qoa_desc *qoa) {
bytes_read = fread(data, 1, size, f);
fclose(f);
sample_data = qoa_decode((const unsigned char *)data, bytes_read, qoa);
sample_data = qoa_decode(data, bytes_read, qoa);
QOA_FREE(data);
return sample_data;
}