mirror of
https://github.com/OldUnreal/libxmp.git
synced 2026-04-02 21:37:43 -07:00
ef6f352892
Fixes numerous issues in the software renderer caused by bidi sample unrolling and the messes and hacks it required elsewhere: * Bidirectional looped samples no longer take up to twice as much RAM. * IT sustain loops no longer require duplicate sample data. * IT bidirectional sustain loops should work properly now. * Other formats that want to use sustain loops should no longer require sample duplication hacks. * The software mixer should no longer occasionally skip output samples when the voice position passes the end of the sample. * Added regression test to ensure both XM and IT bidirectional sample loops render the same as their forward loop counterparts.
84 lines
3.0 KiB
C
84 lines
3.0 KiB
C
#include "test.h"
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#include "../src/loaders/loader.h"
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#define SET(x,y,z,w) do { \
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s.len = (x); s.lps = (y); s.lpe = (z); s.flg = (w); s.data = NULL; \
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} while (0)
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#define CLEAR() do { libxmp_free_sample(&s); } while (0)
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TEST(test_sample_load_16bit)
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{
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struct xmp_sample s;
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HIO_HANDLE *f;
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short buffer[101];
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int i;
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struct module_data m;
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memset(&m, 0, sizeof(struct module_data));
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f = hio_open("data/sample-16bit.raw", "rb");
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fail_unless(f != NULL, "can't open sample file");
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/* read little-endian sample to native-endian buffer */
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for (i = 0; i < 101; i++) {
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buffer[i] = hio_read16l(f);
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}
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/* load zero-length sample */
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SET(0, 0, 101, XMP_SAMPLE_16BIT | XMP_SAMPLE_LOOP);
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libxmp_load_sample(&m, NULL, 0, &s, NULL);
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/* load sample with invalid loop */
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SET(101, 150, 180, XMP_SAMPLE_16BIT | XMP_SAMPLE_LOOP | XMP_SAMPLE_LOOP_BIDIR);
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hio_seek(f, 0, SEEK_SET);
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libxmp_load_sample(&m, f, 0, &s, NULL);
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fail_unless(s.data != NULL, "didn't allocate sample data");
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fail_unless(s.lps == 0, "didn't fix invalid loop start");
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fail_unless(s.lpe == 0, "didn't fix invalid loop end");
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fail_unless(s.flg == XMP_SAMPLE_16BIT, "didn't reset loop flags");
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CLEAR();
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/* load sample with invalid loop */
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SET(101, 50, 40, XMP_SAMPLE_16BIT | XMP_SAMPLE_LOOP | XMP_SAMPLE_LOOP_BIDIR);
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hio_seek(f, 0, SEEK_SET);
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libxmp_load_sample(&m, f, 0, &s, NULL);
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fail_unless(s.data != NULL, "didn't allocate sample data");
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fail_unless(s.lps == 0, "didn't fix invalid loop start");
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fail_unless(s.lpe == 0, "didn't fix invalid loop end");
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fail_unless(s.flg == XMP_SAMPLE_16BIT, "didn't reset loop flags");
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CLEAR();
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/* load sample from file */
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SET(101, 0, 102, XMP_SAMPLE_16BIT);
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hio_seek(f, 0, SEEK_SET);
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libxmp_load_sample(&m, f, 0, &s, NULL);
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fail_unless(s.data != NULL, "didn't allocate sample data");
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fail_unless(s.lpe == 101, "didn't fix invalid loop end");
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fail_unless(memcmp(s.data, buffer, 202) == 0, "sample data error");
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fail_unless(s.data[-2] == s.data[0], "sample prologue error");
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fail_unless(s.data[-1] == s.data[1], "sample prologue error");
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fail_unless(s.data[202] == s.data[200], "sample epilogue error");
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fail_unless(s.data[203] == s.data[201], "sample epilogue error");
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fail_unless(s.data[204] == s.data[202], "sample epilogue error");
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fail_unless(s.data[205] == s.data[203], "sample epilogue error");
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CLEAR();
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/* load sample from file w/ loop */
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SET(101, 20, 80, XMP_SAMPLE_16BIT | XMP_SAMPLE_LOOP);
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hio_seek(f, 0, SEEK_SET);
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libxmp_load_sample(&m, f, 0, &s, NULL);
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fail_unless(s.data != NULL, "didn't allocate sample data");
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fail_unless(memcmp(s.data, buffer, 202) == 0, "sample data error");
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fail_unless(s.data[-2] == s.data[0], "sample prologue error");
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fail_unless(s.data[-1] == s.data[1], "sample prologue error");
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fail_unless(s.data[202] == s.data[200], "sample epilogue error");
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fail_unless(s.data[203] == s.data[201], "sample epilogue error");
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fail_unless(s.data[204] == s.data[202], "sample epilogue error");
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fail_unless(s.data[205] == s.data[203], "sample epilogue error");
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CLEAR();
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hio_close(f);
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}
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END_TEST
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