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Optimization of WavPack decoding in ARM assembler (for iPods). This allows WavPack files encoded in "high" mode to

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play without skipping, although it's still rather marginal (i.e. can't play with other DSP effects enabled). For now
this will not work with 24-bit files either, although that is coming along.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@8814 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Dave Bryant 2006-02-23 20:53:59 +00:00
parent eeec278d21
commit f0d1c96ee4
3 changed files with 482 additions and 1 deletions
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6
apps/codecs/libwavpack/unpack.c
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@ -288,6 +288,8 @@ int read_config_info (WavpackContext *wpc, WavpackMetadata *wpmd)
#if defined(CPU_COLDFIRE) && !defined(SIMULATOR)
extern void decorr_stereo_pass_cont_mcf5249 (struct decorr_pass *dpp, long *buffer, long sample_count);
#elif defined(CPU_ARM) && !defined(SIMULATOR)
extern void decorr_stereo_pass_cont_arm (struct decorr_pass *dpp, long *buffer, long sample_count);
#else
static void decorr_stereo_pass_cont (struct decorr_pass *dpp, long *buffer, long sample_count);
#endif
@ -350,6 +352,8 @@ long unpack_samples (WavpackContext *wpc, long *buffer, ulong sample_count)
decorr_stereo_pass (dpp, buffer, 8);
#if defined(CPU_COLDFIRE) && !defined(SIMULATOR)
decorr_stereo_pass_cont_mcf5249 (dpp, buffer + 16, sample_count - 8);
#elif defined(CPU_ARM) && !defined(SIMULATOR)
decorr_stereo_pass_cont_arm (dpp, buffer + 16, sample_count - 8);
#else
decorr_stereo_pass_cont (dpp, buffer + 16, sample_count - 8);
#endif
@ -510,7 +514,7 @@ static void decorr_stereo_pass (struct decorr_pass *dpp, long *buffer, long samp
dpp->weight_B = weight_B;
}
#if !defined(CPU_COLDFIRE) || defined(SIMULATOR)
#if (!defined(CPU_COLDFIRE) && !defined(CPU_ARM)) || defined(SIMULATOR)
static void decorr_stereo_pass_cont (struct decorr_pass *dpp, long *buffer, long sample_count)
{