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Fix some MUSX loops

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bnnm 2023-05-14 20:14:40 +02:00
parent b00518669e
commit 2e3205ad41
1 changed files with 3 additions and 1 deletions
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4
src/coding/ima_decoder.c
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@ -1317,9 +1317,11 @@ size_t xbox_ima_bytes_to_samples(size_t bytes, int channels) {
size_t dat4_ima_bytes_to_samples(size_t bytes, int channels) { size_t dat4_ima_bytes_to_samples(size_t bytes, int channels) {
int block_align = 0x20 * channels; int block_align = 0x20 * channels;
if (channels <= 0) return 0; if (channels <= 0) return 0;
int mod = bytes % block_align;
/* DAT4 IMA blocks have a 4 byte header per channel; 2 samples per byte (2 nibbles) */ /* DAT4 IMA blocks have a 4 byte header per channel; 2 samples per byte (2 nibbles) */
return (bytes / block_align) * (block_align - 4 * channels) * 2 / channels return (bytes / block_align) * (block_align - 4 * channels) * 2 / channels
+ ((bytes % block_align) ? ((bytes % block_align) - 4 * channels) * 2 / channels : 0); /* unlikely (encoder aligns) */ + ((mod > 0 && mod > 0x04*channels) ? (mod - 0x04*channels) * 2 / channels : 0); /* unlikely (encoder aligns) */
} }
size_t apple_ima4_bytes_to_samples(size_t bytes, int channels) { size_t apple_ima4_bytes_to_samples(size_t bytes, int channels) {