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compile Blip_Buffer as C.

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This commit is contained in:
aliaspider 2014-11-23 06:36:01 +01:00
parent 7433c1906f
commit 4d5ea2c301
2 changed files with 32 additions and 24 deletions
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8
pce_fast/blip/Blip_Buffer.cpp → pce_fast/blip/Blip_Buffer.c
View File

@ -3,7 +3,7 @@
#include "Blip_Buffer.h"
#include <assert.h>
#include <climits>
#include <limits.h>
#include <string.h>
#include <stdlib.h>
#include <math.h>
@ -95,7 +95,7 @@ blargg_err_t Blip_Buffer_set_sample_rate(Blip_Buffer* bbuf, long new_rate,
Blip_Buffer_set_clock_rate(bbuf, bbuf->clock_rate);
Blip_Buffer_bass_freq(bbuf, bbuf->bass_freq);
Blip_Buffer_clear(bbuf);
Blip_Buffer_clear(bbuf, 1);
return 0; // success
}
@ -168,7 +168,9 @@ long Blip_Buffer_read_samples(Blip_Buffer* bbuf, blip_sample_t* out,
int const bass = BLIP_READER_BASS(*bbuf);
BLIP_READER_BEGIN(reader, *bbuf);
for (blip_long n = count; n; --n)
blip_long n;
for (n = count; n; --n)
{
blip_long s = BLIP_READER_READ(reader);
if ((blip_sample_t) s != s)

48
pce_fast/blip/Blip_Buffer.h
View File

@ -1,19 +1,25 @@
// Band-limited sound synthesis buffer
// Various changes and hacks for use in Mednafen.
#ifdef __GNUC__
#define blip_inline inline __attribute__((always_inline))
#else
#define blip_inline inline
#endif
#include <limits.h>
#include <stdint.h>
// Blip_Buffer 0.4.1
#ifndef BLIP_BUFFER_H
#define BLIP_BUFFER_H
#include <limits.h>
#include <stdint.h>
#include <assert.h>
#ifdef __GNUC__
#define blip_inline static inline __attribute__((always_inline))
#else
#define blip_inline static inline
#endif
#ifdef __cplusplus
extern "C" {
#endif
// Internal
typedef int32_t blip_long;
typedef uint32_t blip_ulong;
@ -54,7 +60,7 @@ void Blip_Buffer_deinit(Blip_Buffer* bbuf);
// to 1/4 second), then clear buffer. Returns NULL on success, otherwise if there
// isn't enough memory, returns error without affecting current buffer setup.
blargg_err_t Blip_Buffer_set_sample_rate(Blip_Buffer* bbuf,
long samples_per_sec, int msec_length = 1000 / 4);
long samples_per_sec, int msec_length /*= 1000 / 4*/);
// End current time frame of specified duration and make its samples available
// (along with any still-unread samples) for reading with read_samples(). Begins
@ -75,10 +81,10 @@ void Blip_Buffer_bass_freq(Blip_Buffer* bbuf, int frequency);
// Remove all available samples and clear buffer to silence. If 'entire_buffer' is
// false, just clears out any samples waiting rather than the entire buffer.
void Blip_Buffer_clear(Blip_Buffer* bbuf, int entire_buffer = 1);
void Blip_Buffer_clear(Blip_Buffer* bbuf, int entire_buffer /*= 1*/);
// Number of samples available for reading with read_samples()
long Blip_Buffer_samples_avail(Blip_Buffer* bbuf);
blip_inline long Blip_Buffer_samples_avail(Blip_Buffer* bbuf);
// Remove 'count' samples from those waiting to be read
void Blip_Buffer_remove_samples(Blip_Buffer* bbuf, long count);
@ -102,9 +108,6 @@ static inline blip_resampled_time_t Blip_Buffer_resampled_time(
blip_resampled_time_t Blip_Buffer_clock_rate_factor(Blip_Buffer* bbuf,
long clock_rate);
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#define BLIP_BUFFER_ACCURACY 32
#define BLIP_PHASE_BITS 8
@ -128,10 +131,11 @@ blip_resampled_time_t Blip_Buffer_clock_rate_factor(Blip_Buffer* bbuf,
// Internal
typedef blip_u64 blip_resampled_time_t;
int const blip_widest_impulse_ = 16;
int const blip_buffer_extra_ = blip_widest_impulse_ + 2;
int const blip_res = 1 << BLIP_PHASE_BITS;
int const blip_sample_bits = 30;
#define blip_widest_impulse_ 16
#define blip_buffer_extra_ (blip_widest_impulse_ + 2)
#define blip_res (1 << BLIP_PHASE_BITS)
#define blip_sample_bits 30
// Range specifies the greatest expected change in amplitude. Calculate it
// by finding the difference between the maximum and minimum expected
@ -145,7 +149,7 @@ typedef struct
blip_inline void Blip_Synth_set_volume(Blip_Synth* synth, double v, int range)
{
synth->delta_factor = int ((v * (1.0 / (range < 0 ? -range : range))) *
synth->delta_factor = ((v * (1.0 / (range < 0 ? -range : range))) *
(1L << blip_sample_bits) + 0.5);
}
// Works directly in terms of fractional output samples. Contact author for more info.
@ -193,7 +197,6 @@ int const blip_reader_default_bass = 9;
// End of public interface
#include <assert.h>
blip_inline void Blip_Synth_offset_resampled(
Blip_Synth* synth,
@ -232,5 +235,8 @@ blip_inline void Blip_Buffer_set_clock_rate(Blip_Buffer* bbuf, long cps)
bbuf->factor = Blip_Buffer_clock_rate_factor(bbuf, bbuf->clock_rate = cps);
}
#ifdef __cplusplus
}
#endif
#endif