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libmpg123 1.15.4

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git-svn-id: svn://kolibrios.org@3960 a494cfbc-eb01-0410-851d-a64ba20cac60
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Sergey Semyonov (Serge)
2013-10-02 16:44:03 +00:00
parent 44d189b67c
commit 2217a37e5b
68 changed files with 11403 additions and 1285 deletions
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20
programs/develop/libraries/libmpg123/sample.h
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@@ -88,12 +88,32 @@ static inline short ftoi16(float x)
/* The actual storage of a decoded sample is separated in the following macros.
We can handle different types, we could also handle dithering here. */
#ifdef NEWOLD_WRITE_SAMPLE
/* This is the old new mpg123 WRITE_SAMPLE, fixed for newer GCC by MPlayer folks.
Makes a huge difference on old machines. */
#if WORDS_BIGENDIAN
#define MANTISSA_OFFSET 1
#else
#define MANTISSA_OFFSET 0
#endif
#define WRITE_SHORT_SAMPLE(samples,sum,clip) { \
union { double dtemp; int itemp[2]; } u; int v; \
u.dtemp = ((((65536.0 * 65536.0 * 16)+(65536.0 * 0.5))* 65536.0)) + (sum);\
v = u.itemp[MANTISSA_OFFSET] - 0x80000000; \
if( v > 32767) { *(samples) = 0x7fff; (clip)++; } \
else if( v < -32768) { *(samples) = -0x8000; (clip)++; } \
else { *(samples) = v; } \
}
#else
/* Macro to produce a short (signed 16bit) output sample from internal representation,
which may be float, double or indeed some integer for fixed point handling. */
#define WRITE_SHORT_SAMPLE(samples,sum,clip) \
if( (sum) > REAL_PLUS_32767) { *(samples) = 0x7fff; (clip)++; } \
else if( (sum) < REAL_MINUS_32768) { *(samples) = -0x8000; (clip)++; } \
else { *(samples) = REAL_TO_SHORT(sum); }
#endif
/* Same as above, but always using accurate rounding. Would we want softer clipping here, too? */
#define WRITE_SHORT_SAMPLE_ACCURATE(samples,sum,clip) \