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hca: improve key finder in edge cases

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This commit is contained in:
bnnm 2021-10-31 20:10:13 +01:00
parent e842d7934c
commit e32630efda
1 changed files with 5 additions and 6 deletions
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11
src/coding/hca_decoder.c
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@ -218,8 +218,6 @@ static int test_hca_score(hca_codec_data* data, hca_keytest_t* hk, unsigned long
if (!offset)
offset = data->info.headerSize;
//VGM_LOG("test=k\n");
/* Due to the potentially large number of keys this must be tuned for speed.
* Buffered IO seems fast enough (not very different reading a large block once vs frame by frame).
* clHCA_TestBlock could be optimized a bit more. */
@ -232,7 +230,7 @@ static int test_hca_score(hca_codec_data* data, hca_keytest_t* hk, unsigned long
while (test_frames < HCA_KEY_MAX_TEST_FRAMES && current_frame < data->info.blockCount) {
int score;
size_t bytes;
//VGM_LOG(" *frame\n");
/* read and test frame */
bytes = read_streamfile(data->data_buffer, offset, block_size, data->sf);
if (bytes != block_size) {
@ -256,8 +254,9 @@ static int test_hca_score(hca_codec_data* data, hca_keytest_t* hk, unsigned long
current_frame++;
/* ignore silent frames at the beginning, up to a point and first non-blank */
if (score == 0 && blank_frames < HCA_KEY_MAX_SKIP_BLANKS && !hk->start_offset) {
/* ignore silent frames at the beginning, up to a point (keep skipping as
* in rare cases there are one non-blank frame then a bunch, that skew results) */
if (score == 0 && blank_frames < HCA_KEY_MAX_SKIP_BLANKS /*&& !hk->start_offset*/) {
blank_frames++;
continue;
}
@ -283,7 +282,7 @@ static int test_hca_score(hca_codec_data* data, hca_keytest_t* hk, unsigned long
if (test_frames > HCA_KEY_MIN_TEST_FRAMES && total_score > 0 && total_score <= test_frames) {
total_score = 1;
}
//VGM_LOG("test=%i\n", total_score);
clHCA_DecodeReset(data->handle);
return total_score;
}