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authorMichael Sevakis <jethead71@rockbox.org>2007-07-16 21:03:25 +0000
committerMichael Sevakis <jethead71@rockbox.org>2007-07-16 21:03:25 +0000
commit8552eff9e46ede8968ea13cc172e1c61856bee18 (patch)
tree7649c84039f0ee4801d56b7b9b38966c3731f79a /apps/codecs
parent76fa0f7e30398e01d405b4391c30b99dca4c9288 (diff)
downloadrockbox-8552eff9e46ede8968ea13cc172e1c61856bee18.tar.gz
rockbox-8552eff9e46ede8968ea13cc172e1c61856bee18.zip
Make the SPC codec run like it used to on Coldfire before -Os crushed it. Build as a lib using the old -O option. Should not impact ARM targets.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13919 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'apps/codecs')
-rw-r--r--apps/codecs/Makefile15
-rw-r--r--apps/codecs/spc.c567
-rw-r--r--apps/codecs/spc/Makefile44
-rw-r--r--apps/codecs/spc/SOURCES4
-rw-r--r--apps/codecs/spc/spc_cpu.c (renamed from apps/codecs/spc/Spc_Cpu.h)21
-rw-r--r--apps/codecs/spc/spc_dsp.c (renamed from apps/codecs/spc/Spc_Dsp.h)283
-rw-r--r--apps/codecs/spc/spc_emu.c378
-rw-r--r--apps/codecs/spc/spc_profiler.c64
-rw-r--r--apps/codecs/spc/spc_profiler.h47
9 files changed, 609 insertions, 814 deletions
diff --git a/apps/codecs/Makefile b/apps/codecs/Makefile
index 44caacf780..2c0a18295e 100644
--- a/apps/codecs/Makefile
+++ b/apps/codecs/Makefile
@@ -17,7 +17,7 @@ ifdef APPEXTRA
endif
ifdef SOFTWARECODECS
- CODECLIBS = -lmad -la52 -lffmpegFLAC -lTremor -lwavpack -lmusepack -lalac -lfaad -lm4a -lspeex -ldemac -lwma
+ CODECLIBS = -lspc -lmad -la52 -lffmpegFLAC -lTremor -lwavpack -lmusepack -lalac -lfaad -lm4a -lspeex -ldemac -lwma
endif
# we "borrow" the plugin LDS file
@@ -39,7 +39,7 @@ DIRS = .
CODECDEPS = $(LINKCODEC) $(BUILDDIR)/libcodec.a
-.PHONY: libmad liba52 libffmpegFLAC libTremor libspeex libwavpack libmusepack libalac libfaad libm4a libdemac libwma
+.PHONY: libspc libmad liba52 libffmpegFLAC libTremor libspeex libwavpack libmusepack libalac libfaad libm4a libdemac libwma
OUTPUT = $(SOFTWARECODECS)
@@ -52,7 +52,7 @@ $(OBJDIR)/wav.elf : $(OBJDIR)/wav.o $(OBJDIR)/codec_crt0.o
$(OBJDIR)/sid.elf : $(OBJDIR)/sid.o $(OBJDIR)/codec_crt0.o
$(OBJDIR)/adx.elf : $(OBJDIR)/adx.o $(OBJDIR)/codec_crt0.o
$(OBJDIR)/nsf.elf : $(OBJDIR)/nsf.o $(OBJDIR)/codec_crt0.o
-$(OBJDIR)/spc.elf : $(OBJDIR)/spc.o $(OBJDIR)/codec_crt0.o
+$(OBJDIR)/spc.elf : $(OBJDIR)/spc.o $(BUILDDIR)/libspc.a $(OBJDIR)/codec_crt0.o
$(OBJDIR)/aiff.elf : $(OBJDIR)/aiff.o $(OBJDIR)/codec_crt0.o
$(OBJDIR)/mpa.elf : $(OBJDIR)/mpa.o $(BUILDDIR)/libmad.a $(OBJDIR)/codec_crt0.o
$(OBJDIR)/a52.elf : $(OBJDIR)/a52.o $(BUILDDIR)/liba52.a $(OBJDIR)/codec_crt0.o
@@ -140,6 +140,12 @@ $(BUILDDIR)/libcodec.a:
$(LINKCODEC): $(LDS)
$(call PRINTS,build $(@F))cat $< | $(CC) -DMEMORYSIZE=$(MEMORYSIZE) -DCODEC $(INCLUDES) $(TARGET) $(DEFINES) -E -P - >$@
+$(BUILDDIR)/libspc.a: libspc
+
+libspc:
+ $(SILENT)mkdir -p $(OBJDIR)/spc
+ $(call PRINTS,MAKE in spc)$(MAKE) -C spc OBJDIR=$(OBJDIR)/spc OUTPUT=$(BUILDDIR)/libspc.a
+
$(BUILDDIR)/libmad.a: libmad
libmad:
@@ -213,7 +219,8 @@ libdemac:
$(call PRINTS,MAKE in libdemac)$(MAKE) -C demac/libdemac OBJDIR=$(OBJDIR)/libdemac OUTPUT=$(BUILDDIR)/libdemac.a
clean:
- $(call PRINTS,cleaning codecs)rm -fr $(OBJDIR)/libmad $(BUILDDIR)/libmad.a $(OBJDIR)/liba52 $(BUILDDIR)/liba52.a $(OBJDIR)/libffmpegFLAC $(BUILDDIR)/libffmpegFLAC.a $(OBJDIR)/Tremor $(BUILDDIR)/libTremor.a $(OBJDIR)/libspeex $(BUILDDIR)/libSpeex.a $(OBJDIR)/libwavpack $(BUILDDIR)/libwavpack.a $(OBJDIR)/libmusepack $(BUILDDIR)/libmusepack.a $(OBJDIR)/libalac $(BUILDDIR)/libalac.a $(OBJDIR)/libfaad $(BUILDDIR)/libfaad.a $(OBJDIR)/libm4a $(BUILDDIR)/libm4a.a $(OBJDIR)/libdemac $(BUILDDIR)/libdemac.a $(OBJDIR)/libwma $(BUILDDIR)/libwma.a
+ $(call PRINTS,cleaning codecs)rm -fr $(OBJDIR)/spc $(BUILDDIR)/libspc.a $(OBJDIR)/libmad $(BUILDDIR)/libmad.a $(OBJDIR)/liba52 $(BUILDDIR)/liba52.a $(OBJDIR)/libffmpegFLAC $(BUILDDIR)/libffmpegFLAC.a $(OBJDIR)/Tremor $(BUILDDIR)/libTremor.a $(OBJDIR)/libspeex $(BUILDDIR)/libSpeex.a $(OBJDIR)/libwavpack $(BUILDDIR)/libwavpack.a $(OBJDIR)/libmusepack $(BUILDDIR)/libmusepack.a $(OBJDIR)/libalac $(BUILDDIR)/libalac.a $(OBJDIR)/libfaad $(BUILDDIR)/libfaad.a $(OBJDIR)/libm4a $(BUILDDIR)/libm4a.a $(OBJDIR)/libdemac $(BUILDDIR)/libdemac.a $(OBJDIR)/libwma $(BUILDDIR)/libwma.a
+ $(SILENT)$(MAKE) -C spc clean OBJDIR=$(OBJDIR)/spc
$(SILENT)$(MAKE) -C libmad clean OBJDIR=$(OBJDIR)/libmad
$(SILENT)$(MAKE) -C liba52 clean OBJDIR=$(OBJDIR)/liba52
$(SILENT)$(MAKE) -C libffmpegFLAC clean OBJDIR=$(OBJDIR)/libffmpegFLAC
diff --git a/apps/codecs/spc.c b/apps/codecs/spc.c
index 6c791b46a1..f2890cd4a4 100644
--- a/apps/codecs/spc.c
+++ b/apps/codecs/spc.c
@@ -5,6 +5,7 @@
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
+ * $Id$
*
* Copyright (C) 2006-2007 Adam Gashlin (hcs)
* Copyright (C) 2004-2007 Shay Green (blargg)
@@ -21,555 +22,11 @@
/* lovingly ripped off from Game_Music_Emu 0.5.2. http://www.slack.net/~ant/ */
/* DSP Based on Brad Martin's OpenSPC DSP emulator */
/* tag reading from sexyspc by John Brawn (John_Brawn@yahoo.com) and others */
-
#include "codeclib.h"
-#include "inttypes.h"
-#include "system.h"
-
-/* rather than comment out asserts, just define NDEBUG */
-#define NDEBUG
-#include <assert.h>
-#undef check
-#define check assert
-
-CODEC_HEADER
-
-#ifdef CPU_ARM
- #undef ICODE_ATTR
- #define ICODE_ATTR
-
- #undef IDATA_ATTR
- #define IDATA_ATTR
-#endif
-
-/* TGB is the only target fast enough for gaussian and realtime BRR decode */
-/* echo is almost fast enough but not quite */
-#ifndef TOSHIBA_GIGABEAT_F
- /* Cache BRR waves */
- #define SPC_BRRCACHE 1
-
- /* Disable gaussian interpolation */
- #define SPC_NOINTERP 1
-
-#ifndef CPU_COLDFIRE
- /* Disable echo processing */
- #define SPC_NOECHO 1
-#else
- /* Enable echo processing */
- #define SPC_NOECHO 0
-#endif
-#else
- /* Don't cache BRR waves */
- #define SPC_BRRCACHE 0
-
- /* Allow gaussian interpolation */
- #define SPC_NOINTERP 0
-
- /* Allow echo processing */
- #define SPC_NOECHO 0
-#endif
-
-/* Samples per channel per iteration */
-#ifdef CPU_COLDFIRE
-#define WAV_CHUNK_SIZE 1024
-#else
-#define WAV_CHUNK_SIZE 2048
-#endif
-
-/* simple profiling with USEC_TIMER */
-/*#define SPC_PROFILE*/
-
+#include "spc/spc_codec.h"
#include "spc/spc_profiler.h"
-#define THIS struct Spc_Emu* const this
-
-/**************** Little-endian handling ****************/
-
-static inline unsigned get_le16( void const* p )
-{
- return ((unsigned char const*) p) [1] * 0x100u +
- ((unsigned char const*) p) [0];
-}
-
-static inline int get_le16s( void const* p )
-{
- return ((signed char const*) p) [1] * 0x100 +
- ((unsigned char const*) p) [0];
-}
-
-static inline void set_le16( void* p, unsigned n )
-{
- ((unsigned char*) p) [1] = (unsigned char) (n >> 8);
- ((unsigned char*) p) [0] = (unsigned char) n;
-}
-
-#define GET_LE16( addr ) get_le16( addr )
-#define SET_LE16( addr, data ) set_le16( addr, data )
-#define INT16A( addr ) (*(uint16_t*) (addr))
-#define INT16SA( addr ) (*(int16_t*) (addr))
-
-#ifdef ROCKBOX_LITTLE_ENDIAN
- #define GET_LE16A( addr ) (*(uint16_t*) (addr))
- #define GET_LE16SA( addr ) (*( int16_t*) (addr))
- #define SET_LE16A( addr, data ) (void) (*(uint16_t*) (addr) = (data))
-#else
- #define GET_LE16A( addr ) get_le16 ( addr )
- #define GET_LE16SA( addr ) get_le16s( addr )
- #define SET_LE16A( addr, data ) set_le16 ( addr, data )
-#endif
-
-static struct
-{
- union {
- uint8_t padding1 [0x100];
- uint16_t align;
- } padding1 [1];
- uint8_t ram [0x10000];
- uint8_t padding2 [0x100];
-} ram;
-
-#include "spc/Spc_Dsp.h"
-
-#undef RAM
-#define RAM ram.ram
-
-/**************** Timers ****************/
-
-enum { timer_count = 3 };
-
-struct Timer
-{
- long next_tick;
- int period;
- int count;
- int shift;
- int enabled;
- int counter;
-};
-
-static void Timer_run_( struct Timer* t, long time ) ICODE_ATTR;
-static void Timer_run_( struct Timer* t, long time )
-{
- /* when disabled, next_tick should always be in the future */
- assert( t->enabled );
-
- int elapsed = ((time - t->next_tick) >> t->shift) + 1;
- t->next_tick += elapsed << t->shift;
-
- elapsed += t->count;
- if ( elapsed >= t->period ) /* avoid unnecessary division */
- {
- int n = elapsed / t->period;
- elapsed -= n * t->period;
- t->counter = (t->counter + n) & 15;
- }
- t->count = elapsed;
-}
-
-static inline void Timer_run( struct Timer* t, long time )
-{
- if ( time >= t->next_tick )
- Timer_run_( t, time );
-}
-
-/**************** SPC emulator ****************/
-/* 1.024 MHz clock / 32000 samples per second */
-enum { clocks_per_sample = 32 };
-
-enum { extra_clocks = clocks_per_sample / 2 };
-
-/* using this disables timer (since this will always be in the future) */
-enum { timer_disabled_time = 127 };
-
-enum { rom_size = 64 };
-enum { rom_addr = 0xFFC0 };
-
-struct cpu_regs_t
-{
- long pc; /* more than 16 bits to allow overflow detection */
- uint8_t a;
- uint8_t x;
- uint8_t y;
- uint8_t status;
- uint8_t sp;
-};
-
-
-struct Spc_Emu
-{
- uint8_t cycle_table [0x100];
- struct cpu_regs_t r;
-
- int32_t* sample_buf;
- long next_dsp;
- int rom_enabled;
- int extra_cycles;
-
- struct Timer timer [timer_count];
-
- /* large objects at end */
- struct Spc_Dsp dsp;
- uint8_t extra_ram [rom_size];
- uint8_t boot_rom [rom_size];
-};
-
-static void SPC_enable_rom( THIS, int enable )
-{
- if ( this->rom_enabled != enable )
- {
- this->rom_enabled = enable;
- memcpy( RAM + rom_addr, (enable ? this->boot_rom : this->extra_ram), rom_size );
- /* TODO: ROM can still get overwritten when DSP writes to echo buffer */
- }
-}
-
-static void SPC_Init( THIS )
-{
- this->timer [0].shift = 4 + 3; /* 8 kHz */
- this->timer [1].shift = 4 + 3; /* 8 kHz */
- this->timer [2].shift = 4; /* 8 kHz */
-
- /* Put STOP instruction around memory to catch PC underflow/overflow. */
- memset( ram.padding1, 0xFF, sizeof ram.padding1 );
- memset( ram.padding2, 0xFF, sizeof ram.padding2 );
-
- /* A few tracks read from the last four bytes of IPL ROM */
- this->boot_rom [sizeof this->boot_rom - 2] = 0xC0;
- this->boot_rom [sizeof this->boot_rom - 1] = 0xFF;
- memset( this->boot_rom, 0, sizeof this->boot_rom - 2 );
-}
-
-static void SPC_load_state( THIS, struct cpu_regs_t const* cpu_state,
- const void* new_ram, const void* dsp_state )
-{
- memcpy(&(this->r),cpu_state,sizeof this->r);
-
- /* ram */
- memcpy( RAM, new_ram, sizeof RAM );
- memcpy( this->extra_ram, RAM + rom_addr, sizeof this->extra_ram );
-
- /* boot rom (have to force enable_rom() to update it) */
- this->rom_enabled = !(RAM [0xF1] & 0x80);
- SPC_enable_rom( this, !this->rom_enabled );
-
- /* dsp */
- /* some SPCs rely on DSP immediately generating one sample */
- this->extra_cycles = 32;
- DSP_reset( &this->dsp );
- int i;
- for ( i = 0; i < register_count; i++ )
- DSP_write( &this->dsp, i, ((uint8_t const*) dsp_state) [i] );
-
- /* timers */
- for ( i = 0; i < timer_count; i++ )
- {
- struct Timer* t = &this->timer [i];
-
- t->next_tick = -extra_clocks;
- t->enabled = (RAM [0xF1] >> i) & 1;
- if ( !t->enabled )
- t->next_tick = timer_disabled_time;
- t->count = 0;
- t->counter = RAM [0xFD + i] & 15;
-
- int p = RAM [0xFA + i];
- if ( !p )
- p = 0x100;
- t->period = p;
- }
-
- /* Handle registers which already give 0 when read by
- setting RAM and not changing it.
- Put STOP instruction in registers which can be read,
- to catch attempted execution. */
- RAM [0xF0] = 0;
- RAM [0xF1] = 0;
- RAM [0xF3] = 0xFF;
- RAM [0xFA] = 0;
- RAM [0xFB] = 0;
- RAM [0xFC] = 0;
- RAM [0xFD] = 0xFF;
- RAM [0xFE] = 0xFF;
- RAM [0xFF] = 0xFF;
-}
-
-static void clear_echo( THIS )
-{
- if ( !(DSP_read( &this->dsp, 0x6C ) & 0x20) )
- {
- unsigned addr = 0x100 * DSP_read( &this->dsp, 0x6D );
- size_t size = 0x800 * DSP_read( &this->dsp, 0x7D );
- size_t max_size = sizeof RAM - addr;
- if ( size > max_size )
- size = sizeof RAM - addr;
- memset( RAM + addr, 0xFF, size );
- }
-}
-
-enum { spc_file_size = 0x10180 };
-
-struct spc_file_t
-{
- char signature [27];
- char unused [10];
- uint8_t pc [2];
- uint8_t a;
- uint8_t x;
- uint8_t y;
- uint8_t status;
- uint8_t sp;
- char unused2 [212];
- uint8_t ram [0x10000];
- uint8_t dsp [128];
- uint8_t ipl_rom [128];
-};
-
-static int SPC_load_spc( THIS, const void* data, long size )
-{
- struct spc_file_t const* spc = (struct spc_file_t const*) data;
- struct cpu_regs_t regs;
-
- if ( size < spc_file_size )
- return -1;
-
- if ( memcmp( spc->signature, "SNES-SPC700 Sound File Data", 27 ) != 0 )
- return -1;
-
- regs.pc = spc->pc [1] * 0x100 + spc->pc [0];
- regs.a = spc->a;
- regs.x = spc->x;
- regs.y = spc->y;
- regs.status = spc->status;
- regs.sp = spc->sp;
-
- if ( (unsigned long) size >= sizeof *spc )
- memcpy( this->boot_rom, spc->ipl_rom, sizeof this->boot_rom );
-
- SPC_load_state( this, &regs, spc->ram, spc->dsp );
-
- clear_echo(this);
-
- return 0;
-}
-
-/**************** DSP interaction ****************/
-
-static void SPC_run_dsp_( THIS, long time ) ICODE_ATTR;
-static void SPC_run_dsp_( THIS, long time )
-{
- /* divide by clocks_per_sample */
- int count = ((time - this->next_dsp) >> 5) + 1;
- int32_t* buf = this->sample_buf;
- this->sample_buf = buf + count;
- this->next_dsp += count * clocks_per_sample;
- DSP_run( &this->dsp, count, buf );
-}
-
-static inline void SPC_run_dsp( THIS, long time )
-{
- if ( time >= this->next_dsp )
- SPC_run_dsp_( this, time );
-}
-
-static int SPC_read( THIS, unsigned addr, long const time ) ICODE_ATTR;
-static int SPC_read( THIS, unsigned addr, long const time )
-{
- int result = RAM [addr];
-
- if ( ((unsigned) (addr - 0xF0)) < 0x10 )
- {
- assert( 0xF0 <= addr && addr <= 0xFF );
-
- /* counters */
- int i = addr - 0xFD;
- if ( i >= 0 )
- {
- struct Timer* t = &this->timer [i];
- Timer_run( t, time );
- result = t->counter;
- t->counter = 0;
- }
- /* dsp */
- else if ( addr == 0xF3 )
- {
- SPC_run_dsp( this, time );
- result = DSP_read( &this->dsp, RAM [0xF2] & 0x7F );
- }
- }
- return result;
-}
-
-static void SPC_write( THIS, unsigned addr, int data, long const time )
- ICODE_ATTR;
-static void SPC_write( THIS, unsigned addr, int data, long const time )
-{
- /* first page is very common */
- if ( addr < 0xF0 )
- {
- RAM [addr] = (uint8_t) data;
- }
- else switch ( addr )
- {
- /* RAM */
- default:
- if ( addr < rom_addr )
- {
- RAM [addr] = (uint8_t) data;
- }
- else
- {
- this->extra_ram [addr - rom_addr] = (uint8_t) data;
- if ( !this->rom_enabled )
- RAM [addr] = (uint8_t) data;
- }
- break;
-
- /* DSP */
- /*case 0xF2:*/ /* mapped to RAM */
- case 0xF3: {
- SPC_run_dsp( this, time );
- int reg = RAM [0xF2];
- if ( reg < register_count ) {
- DSP_write( &this->dsp, reg, data );
- }
- else {
- /*dprintf( "DSP write to $%02X\n", (int) reg ); */
- }
- break;
- }
-
- case 0xF0: /* Test register */
- /*dprintf( "Wrote $%02X to $F0\n", (int) data ); */
- break;
-
- /* Config */
- case 0xF1:
- {
- int i;
- /* timers */
- for ( i = 0; i < timer_count; i++ )
- {
- struct Timer * t = this->timer+i;
- if ( !(data & (1 << i)) )
- {
- t->enabled = 0;
- t->next_tick = timer_disabled_time;
- }
- else if ( !t->enabled )
- {
- /* just enabled */
- t->enabled = 1;
- t->counter = 0;
- t->count = 0;
- t->next_tick = time;
- }
- }
-
- /* port clears */
- if ( data & 0x10 )
- {
- RAM [0xF4] = 0;
- RAM [0xF5] = 0;
- }
- if ( data & 0x20 )
- {
- RAM [0xF6] = 0;
- RAM [0xF7] = 0;
- }
-
- SPC_enable_rom( this, (data & 0x80) != 0 );
- break;
- }
-
- /* Ports */
- case 0xF4:
- case 0xF5:
- case 0xF6:
- case 0xF7:
- /* to do: handle output ports */
- break;
-
- /* verified on SNES that these are read/write (RAM) */
- /*case 0xF8: */
- /*case 0xF9: */
-
- /* Timers */
- case 0xFA:
- case 0xFB:
- case 0xFC: {
- int i = addr - 0xFA;
- struct Timer* t = &this->timer [i];
- if ( (t->period & 0xFF) != data )
- {
- Timer_run( t, time );
- this->timer[i].period = data ? data : 0x100;
- }
- break;
- }
-
- /* Counters (cleared on write) */
- case 0xFD:
- case 0xFE:
- case 0xFF:
- /*dprintf( "Wrote to counter $%02X\n", (int) addr ); */
- this->timer [addr - 0xFD].counter = 0;
- break;
- }
-}
-
-#include "spc/Spc_Cpu.h"
-
-/**************** Sample generation ****************/
-
-static int SPC_play( THIS, long count, int32_t* out ) ICODE_ATTR;
-static int SPC_play( THIS, long count, int32_t* out )
-{
- int i;
- assert( count % 2 == 0 ); /* output is always in pairs of samples */
-
- long start_time = -(count >> 1) * clocks_per_sample - extra_clocks;
-
- /* DSP output is made on-the-fly when DSP registers are read or written */
- this->sample_buf = out;
- this->next_dsp = start_time + clocks_per_sample;
-
- /* Localize timer next_tick times and run them to the present to prevent
- a running but ignored timer's next_tick from getting too far behind
- and overflowing. */
- for ( i = 0; i < timer_count; i++ )
- {
- struct Timer* t = &this->timer [i];
- if ( t->enabled )
- {
- t->next_tick += start_time + extra_clocks;
- Timer_run( t, start_time );
- }
- }
-
- /* Run from start_time to 0, pre-advancing by extra cycles from last run */
- this->extra_cycles = CPU_run( this, start_time + this->extra_cycles ) +
- extra_clocks;
- if ( this->extra_cycles < 0 )
- {
- /*dprintf( "Unhandled instruction $%02X, pc = $%04X\n",
- (int) CPU_read( r.pc ), (unsigned) r.pc ); */
-
- return -1;
- }
-
- /* Catch DSP up to present */
-#if 0
- ENTER_TIMER(cpu);
-#endif
- SPC_run_dsp( this, -extra_clocks );
-#if 0
- EXIT_TIMER(cpu);
-#endif
- assert( this->next_dsp == clocks_per_sample - extra_clocks );
- assert( this->sample_buf - out == count );
-
- return 0;
-}
+CODEC_HEADER
/**************** ID666 parsing ****************/
@@ -733,15 +190,15 @@ static int32_t samples[WAV_CHUNK_SIZE*2] IBSS_ATTR;
static struct Spc_Emu spc_emu IDATA_ATTR;
-enum {sample_rate = 32000};
+enum {SAMPLE_RATE = 32000};
/* The main decoder loop */
static int play_track( void )
{
int sampleswritten=0;
- unsigned long fadestartsample = ID666.length*(long long) sample_rate/1000;
- unsigned long fadeendsample = (ID666.length+ID666.fade)*(long long) sample_rate/1000;
+ unsigned long fadestartsample = ID666.length*(long long) SAMPLE_RATE/1000;
+ unsigned long fadeendsample = (ID666.length+ID666.fade)*(long long) SAMPLE_RATE/1000;
int fadedec = 0;
int fadevol = 0x7fffffffl;
@@ -758,7 +215,7 @@ static int play_track( void )
}
if (ci->seek_time) {
- int curtime = sampleswritten*1000LL/sample_rate;
+ int curtime = sampleswritten*1000LL/SAMPLE_RATE;
DEBUGF("seek to %ld\ncurrently at %d\n",ci->seek_time,curtime);
if (ci->seek_time < curtime) {
DEBUGF("seek backwards = reset\n");
@@ -778,7 +235,7 @@ static int play_track( void )
/* is track timed? */
if (ci->global_settings->repeat_mode!=REPEAT_ONE && ci->id3->length) {
- unsigned long curtime = sampleswritten*1000LL/sample_rate;
+ unsigned long curtime = sampleswritten*1000LL/SAMPLE_RATE;
unsigned long lasttimesample = (sampleswritten-WAV_CHUNK_SIZE);
/* fade? */
@@ -811,7 +268,7 @@ static int play_track( void )
ci->pcmbuf_insert(samples, samples+WAV_CHUNK_SIZE, WAV_CHUNK_SIZE);
if (ci->global_settings->repeat_mode!=REPEAT_ONE)
- ci->set_elapsed(sampleswritten*1000LL/sample_rate);
+ ci->set_elapsed(sampleswritten*1000LL/SAMPLE_RATE);
else
ci->set_elapsed(0);
}
@@ -824,11 +281,11 @@ static int play_track( void )
/* this is the codec entry point */
enum codec_status codec_main(void)
{
- memcpy( spc_emu.cycle_table, cycle_table, sizeof cycle_table );
-
#ifdef CPU_COLDFIRE
+ /* signed integer mode with saturation */
coldfire_set_macsr(EMAC_SATURATE);
#endif
+ CPU_Init(&spc_emu);
do
{
@@ -839,7 +296,7 @@ enum codec_status codec_main(void)
DEBUGF("SPC: after init\n");
ci->configure(DSP_SET_SAMPLE_DEPTH, 24);
- ci->configure(DSP_SET_FREQUENCY, sample_rate);
+ ci->configure(DSP_SET_FREQUENCY, SAMPLE_RATE);
ci->configure(DSP_SET_STEREO_MODE, STEREO_NONINTERLEAVED);
/* wait for track info to load */
diff --git a/apps/codecs/spc/Makefile b/apps/codecs/spc/Makefile
new file mode 100644
index 0000000000..8929149ce2
--- /dev/null
+++ b/apps/codecs/spc/Makefile
@@ -0,0 +1,44 @@
+# __________ __ ___.
+# Open \______ \ ____ ____ | | _\_ |__ _______ ___
+# Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
+# Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
+# Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
+# \/ \/ \/ \/ \/
+# $Id$
+#
+
+INCLUDES=-I$(APPSDIR) -I.. -I. -I$(FIRMDIR)/include -I$(FIRMDIR)/export \
+ -I$(FIRMDIR)/common -I$(FIRMDIR)/drivers -I$(BUILDDIR)
+
+ifdef APPEXTRA
+ INCLUDES += $(patsubst %,-I$(APPSDIR)/%,$(subst :, ,$(APPEXTRA)))
+endif
+
+SPCOPTS = -O -DROCKBOX
+
+CFLAGS = $(INCLUDES) $(GCCOPTS) $(TARGET_INC) $(SPCOPTS) $(TARGET) \
+$(EXTRA_DEFINES) -DMEM=${MEMORYSIZE} $(PROFILE_OPTS) -DCODEC=1
+
+# This sets up 'SRC' based on the files mentioned in SOURCES
+include $(TOOLSDIR)/makesrc.inc
+
+SOURCES = $(SRC)
+OBJS2 := $(SRC:%.c=$(OBJDIR)/%.o)
+OBJS = $(patsubst %.S, $(OBJDIR)/%.o, $(OBJS2))
+DEPFILE = $(OBJDIR)/dep-spc
+DIRS =
+
+all: $(OUTPUT)
+
+$(OUTPUT): $(OBJS)
+ $(call PRINTS,AR+RANLIB $(@F))$(AR) ruv $@ $+ >/dev/null 2>&1
+ $(SILENT)$(RANLIB) $@
+
+include $(TOOLSDIR)/make.inc
+
+clean:
+ $(call PRINTS,cleaning spc)rm -f $(OBJS) $(OUTPUT) $(DEPFILE)
+
+ifneq ($(MAKECMDGOALS),clean)
+-include $(DEPFILE)
+endif
diff --git a/apps/codecs/spc/SOURCES b/apps/codecs/spc/SOURCES
new file mode 100644
index 0000000000..901232a6eb
--- /dev/null
+++ b/apps/codecs/spc/SOURCES
@@ -0,0 +1,4 @@
+spc_cpu.c
+spc_dsp.c
+spc_emu.c
+spc_profiler.c
diff --git a/apps/codecs/spc/Spc_Cpu.h b/apps/codecs/spc/spc_cpu.c
index b931ca2a3b..3b7c129ad8 100644
--- a/apps/codecs/spc/Spc_Cpu.h
+++ b/apps/codecs/spc/spc_cpu.c
@@ -5,6 +5,7 @@
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
+ * $Id$
*
* Copyright (C) 2006-2007 Adam Gashlin (hcs)
* Copyright (C) 2004-2007 Shay Green (blargg)
@@ -17,9 +18,15 @@
* KIND, either express or implied.
*
****************************************************************************/
-
-
+
/* The CPU portion (shock!) */
+#include "codec.h"
+#include "codecs.h"
+#include "spc_codec.h"
+#include "spc_profiler.h"
+
+#undef check
+#define check assert
#define READ( addr ) (SPC_read( this, addr, spc_time_ ))
#define WRITE( addr, value ) (SPC_write( this, addr, value, spc_time_ ))
@@ -103,9 +110,7 @@ enum { st_c = 0x01 };
#define SET_SP( v ) (sp = RAM + 0x101 + (v))
#define GET_SP() (sp - 0x101 - RAM)
-static long CPU_run( THIS, long start_time ) ICODE_ATTR;
-
-static long CPU_run( THIS, long start_time )
+long CPU_run( THIS, long start_time )
{
#if 0
ENTER_TIMER(cpu);
@@ -1035,3 +1040,9 @@ out_of_time:
#endif
return spc_time_;
}
+
+void CPU_Init( THIS )
+{
+ ci->memcpy( this->cycle_table, cycle_table, sizeof cycle_table );
+}
+
diff --git a/apps/codecs/spc/Spc_Dsp.h b/apps/codecs/spc/spc_dsp.c
index d670b20c52..6a8aaebc7f 100644
--- a/apps/codecs/spc/Spc_Dsp.h
+++ b/apps/codecs/spc/spc_dsp.c
@@ -20,196 +20,24 @@
****************************************************************************/
/* The DSP portion (awe!) */
+#include "codec.h"
+#include "codecs.h"
+#include "spc_codec.h"
+#include "spc_profiler.h"
-enum { voice_count = 8 };
-enum { register_count = 128 };
-
-struct raw_voice_t
-{
- int8_t volume [2];
- uint8_t rate [2];
- uint8_t waveform;
- uint8_t adsr [2]; /* envelope rates for attack, decay, and sustain */
- uint8_t gain; /* envelope gain (if not using ADSR) */
- int8_t envx; /* current envelope level */
- int8_t outx; /* current sample */
- int8_t unused [6];
-};
-
-struct globals_t
-{
- int8_t unused1 [12];
- int8_t volume_0; /* 0C Main Volume Left (-.7) */
- int8_t echo_feedback; /* 0D Echo Feedback (-.7) */
- int8_t unused2 [14];
- int8_t volume_1; /* 1C Main Volume Right (-.7) */
- int8_t unused3 [15];
- int8_t echo_volume_0; /* 2C Echo Volume Left (-.7) */
- uint8_t pitch_mods; /* 2D Pitch Modulation on/off for each voice */
- int8_t unused4 [14];
- int8_t echo_volume_1; /* 3C Echo Volume Right (-.7) */
- uint8_t noise_enables; /* 3D Noise output on/off for each voice */
- int8_t unused5 [14];
- uint8_t key_ons; /* 4C Key On for each voice */
- uint8_t echo_ons; /* 4D Echo on/off for each voice */
- int8_t unused6 [14];
- uint8_t key_offs; /* 5C key off for each voice
- (instantiates release mode) */
- uint8_t wave_page; /* 5D source directory (wave table offsets) */
- int8_t unused7 [14];
- uint8_t flags; /* 6C flags and noise freq */
- uint8_t echo_page; /* 6D */
- int8_t unused8 [14];
- uint8_t wave_ended; /* 7C */
- uint8_t echo_delay; /* 7D ms >> 4 */
- char unused9 [2];
-};
-
-enum state_t { /* -1, 0, +1 allows more efficient if statements */
- state_decay = -1,
- state_sustain = 0,
- state_attack = +1,
- state_release = 2
-};
-
-struct cache_entry_t
-{
- int16_t const* samples;
- unsigned end; /* past-the-end position */
- unsigned loop; /* number of samples in loop */
- unsigned start_addr;
-};
-
-enum { brr_block_size = 16 };
-
-struct voice_t
-{
-#if SPC_BRRCACHE
- int16_t const* samples;
- long wave_end;
- int wave_loop;
-#else
- int16_t samples [3 + brr_block_size + 1];
- int block_header; /* header byte from current block */
+#ifdef CPU_COLDFIRE
+static int32_t fir_buf[FIR_BUF_HALF]
+ __attribute__ ((aligned (FIR_BUF_SIZE*2))) IBSS_ATTR;
#endif
- uint8_t const* addr;
- short volume [2];
- long position;/* position in samples buffer, with 12-bit fraction */
- short envx;
- short env_mode;
- short env_timer;
- short key_on_delay;
-};
#if SPC_BRRCACHE
/* a little extra for samples that go past end */
-static int16_t BRRcache [0x20000 + 32];
-#endif
-
-enum { fir_buf_half = 8 };
-
-#ifdef CPU_COLDFIRE
-/* global because of the large aligment requirement for hardware masking -
- * L-R interleaved 16-bit samples for easy loading and mac.w use.
- */
-enum
-{
- fir_buf_size = fir_buf_half * sizeof ( int32_t ),
- fir_buf_mask = ~fir_buf_size
-};
-int32_t fir_buf[fir_buf_half]
- __attribute__ ((aligned (fir_buf_size*2))) IBSS_ATTR;
-#endif /* CPU_COLDFIRE */
-
-struct Spc_Dsp
-{
- union
- {
- struct raw_voice_t voice [voice_count];
- uint8_t reg [register_count];
- struct globals_t g;
- int16_t align;
- } r;
-
- unsigned echo_pos;
- int keys_down;
- int noise_count;
- uint16_t noise; /* also read as int16_t */
-
-#ifdef CPU_COLDFIRE
- /* circularly hardware masked address */
- int32_t *fir_ptr;
- /* wrapped address just behind current position -
- allows mac.w to increment and mask fir_ptr */
- int32_t *last_fir_ptr;
- /* copy of echo FIR constants as int16_t for use with mac.w */
- int16_t fir_coeff[voice_count];
-#else
- /* fir_buf [i + 8] == fir_buf [i], to avoid wrap checking in FIR code */
- int fir_pos; /* (0 to 7) */
- int fir_buf [fir_buf_half * 2] [2];
- /* copy of echo FIR constants as int, for faster access */
- int fir_coeff [voice_count];
-#endif
-
- struct voice_t voice_state [voice_count];
-
-#if SPC_BRRCACHE
- uint8_t oldsize;
- struct cache_entry_t wave_entry [256];
- struct cache_entry_t wave_entry_old [256];
-#endif
-};
-
-struct src_dir
-{
- char start [2];
- char loop [2];
-};
-
-static void DSP_reset( struct Spc_Dsp* this )
-{
- this->keys_down = 0;
- this->echo_pos = 0;
- this->noise_count = 0;
- this->noise = 2;
-
- this->r.g.flags = 0xE0; /* reset, mute, echo off */
- this->r.g.key_ons = 0;
-
- memset( this->voice_state, 0, sizeof this->voice_state );
-
- int i;
- for ( i = voice_count; --i >= 0; )
- {
- struct voice_t* v = this->voice_state + i;
- v->env_mode = state_release;
- v->addr = ram.ram;
- }
-
- #if SPC_BRRCACHE
- this->oldsize = 0;
- for ( i = 0; i < 256; i++ )
- this->wave_entry [i].start_addr = -1;
- #endif
-
-#ifdef CPU_COLDFIRE
- this->fir_ptr = fir_buf;
- this->last_fir_ptr = &fir_buf [7];
- memset( fir_buf, 0, sizeof fir_buf );
-#else
- this->fir_pos = 0;
- memset( this->fir_buf, 0, sizeof this->fir_buf );
+int16_t BRRcache [0x20000 + 32];
#endif
- assert( offsetof (struct globals_t,unused9 [2]) == register_count );
- assert( sizeof (this->r.voice) == register_count );
-}
-
-static void DSP_write( struct Spc_Dsp* this, int i, int data ) ICODE_ATTR;
-static void DSP_write( struct Spc_Dsp* this, int i, int data )
+void DSP_write( struct Spc_Dsp* this, int i, int data )
{
- assert( (unsigned) i < register_count );
+ assert( (unsigned) i < REGISTER_COUNT );
this->r.reg [i] = data;
int high = i >> 4;
@@ -228,12 +56,6 @@ static void DSP_write( struct Spc_Dsp* this, int i, int data )
}
}
-static inline int DSP_read( struct Spc_Dsp* this, int i )
-{
- assert( (unsigned) i < register_count );
- return this->r.reg [i];
-}
-
/* if ( n < -32768 ) out = -32768; */
/* if ( n > 32767 ) out = 32767; */
#define CLAMP16( n, out )\
@@ -321,8 +143,8 @@ static void decode_brr( struct Spc_Dsp* this, unsigned start_addr,
int const left_shift = left_shifts [scale];
/* output position */
- out += brr_block_size;
- int offset = -brr_block_size << 2;
+ out += BRR_BLOCK_SIZE;
+ int offset = -BRR_BLOCK_SIZE << 2;
do /* decode and filter 16 samples */
{
@@ -432,10 +254,10 @@ static void key_on(struct Spc_Dsp* const this, struct voice_t* const voice,
{
voice->addr = RAM + start_addr;
/* BRR filter uses previous samples */
- voice->samples [brr_block_size + 1] = 0;
- voice->samples [brr_block_size + 2] = 0;
+ voice->samples [BRR_BLOCK_SIZE + 1] = 0;
+ voice->samples [BRR_BLOCK_SIZE + 2] = 0;
/* decode three samples immediately */
- voice->position = (brr_block_size + 3) * 0x1000 - 1;
+ voice->position = (BRR_BLOCK_SIZE + 3) * 0x1000 - 1;
voice->block_header = 0; /* "previous" BRR header */
}
#else
@@ -460,9 +282,7 @@ static void key_on(struct Spc_Dsp* const this, struct voice_t* const voice,
}
}
-static void DSP_run_( struct Spc_Dsp* this, long count, int32_t* out_buf )
- ICODE_ATTR;
-static void DSP_run_( struct Spc_Dsp* this, long count, int32_t* out_buf )
+void DSP_run_( struct Spc_Dsp* this, long count, int32_t* out_buf )
{
#undef RAM
#ifdef CPU_ARM
@@ -516,7 +336,7 @@ static void DSP_run_( struct Spc_Dsp* this, long count, int32_t* out_buf )
#ifdef ROCKBOX_BIG_ENDIAN
/* Convert endiannesses before entering loops - these
get used alot */
- const uint32_t rates[voice_count] =
+ const uint32_t rates[VOICE_COUNT] =
{
GET_LE16A( this->r.voice[0].rate ) & 0x3FFF,
GET_LE16A( this->r.voice[1].rate ) & 0x3FFF,
@@ -531,7 +351,7 @@ static void DSP_run_( struct Spc_Dsp* this, long count, int32_t* out_buf )
#define IF_RBE(...) __VA_ARGS__
#ifdef CPU_COLDFIRE
/* Initialize mask register with the buffer address mask */
- asm volatile ("move.l %[m], %%mask" : : [m]"i"(fir_buf_mask));
+ asm volatile ("move.l %[m], %%mask" : : [m]"i"(FIR_BUF_MASK));
const int echo_wrap = (this->r.g.echo_delay & 15) * 0x800;
const int echo_start = this->r.g.echo_page * 0x100;
#endif /* CPU_COLDFIRE */
@@ -757,9 +577,9 @@ static void DSP_run_( struct Spc_Dsp* this, long count, int32_t* out_buf )
#endif
#if !SPC_BRRCACHE
/* Decode BRR block */
- if ( voice->position >= brr_block_size * 0x1000 )
+ if ( voice->position >= BRR_BLOCK_SIZE * 0x1000 )
{
- voice->position -= brr_block_size * 0x1000;
+ voice->position -= BRR_BLOCK_SIZE * 0x1000;
uint8_t const* addr = voice->addr;
if ( addr >= RAM + 0x10000 )
@@ -805,13 +625,13 @@ static void DSP_run_( struct Spc_Dsp* this, long count, int32_t* out_buf )
int const left_shift = left_shifts [scale];
/* previous samples */
- int smp2 = voice->samples [brr_block_size + 1];
- int smp1 = voice->samples [brr_block_size + 2];
- voice->samples [0] = voice->samples [brr_block_size];
+ int smp2 = voice->samples [BRR_BLOCK_SIZE + 1];
+ int smp1 = voice->samples [BRR_BLOCK_SIZE + 2];
+ voice->samples [0] = voice->samples [BRR_BLOCK_SIZE];
/* output position */
- short* out = voice->samples + (1 + brr_block_size);
- int offset = -brr_block_size << 2;
+ short* out = voice->samples + (1 + BRR_BLOCK_SIZE);
+ int offset = -BRR_BLOCK_SIZE << 2;
/* if next block has end flag set,
this block ends early (verified) */
@@ -820,9 +640,9 @@ static void DSP_run_( struct Spc_Dsp* this, long count, int32_t* out_buf )
/* arrange for last 9 samples to be skipped */
int const skip = 9;
out += (skip & 1);
- voice->samples [skip] = voice->samples [brr_block_size];
+ voice->samples [skip] = voice->samples [BRR_BLOCK_SIZE];
voice->position += skip * 0x1000;
- offset = (-brr_block_size + (skip & ~1)) << 2;
+ offset = (-BRR_BLOCK_SIZE + (skip & ~1)) << 2;
addr -= skip / 2;
/* force sample to end on next decode */
voice->block_header = 1;
@@ -1026,7 +846,7 @@ static void DSP_run_( struct Spc_Dsp* this, long count, int32_t* out_buf )
"asr.l %[sh], %[output] \r\n"
"mac.l %[vvol_0], %[output], %%acc0 \r\n"
"mac.l %[vvol_1], %[output], %%acc1 \r\n"
- : [output]"=&r"(amp_0)
+ : [output]"=&d"(amp_0)
: [vvol_0]"r"((int)voice->volume[0]),
[vvol_1]"r"((int)voice->volume[1]),
[sh]"d"(11)
@@ -1252,12 +1072,12 @@ static void DSP_run_( struct Spc_Dsp* this, long count, int32_t* out_buf )
/* Keep last 8 samples */
int (* const fir_ptr) [2] = this->fir_buf + this->fir_pos;
- this->fir_pos = (this->fir_pos + 1) & (fir_buf_half - 1);
+ this->fir_pos = (this->fir_pos + 1) & (FIR_BUF_HALF - 1);
fir_ptr [ 0] [0] = fb_0;
fir_ptr [ 0] [1] = fb_1;
/* duplicate at +8 eliminates wrap checking below */
- fir_ptr [fir_buf_half] [0] = fb_0;
- fir_ptr [fir_buf_half] [1] = fb_1;
+ fir_ptr [FIR_BUF_HALF] [0] = fb_0;
+ fir_ptr [FIR_BUF_HALF] [1] = fb_1;
/* Apply FIR */
fb_0 *= this->fir_coeff [0];
@@ -1311,12 +1131,41 @@ static void DSP_run_( struct Spc_Dsp* this, long count, int32_t* out_buf )
#endif
}
-static inline void DSP_run( struct Spc_Dsp* this, long count, int32_t* out )
+void DSP_reset( struct Spc_Dsp* this )
{
- /* Should we just fill the buffer with silence? Flags won't be cleared */
- /* during this run so it seems it should keep resetting every sample. */
- if ( this->r.g.flags & 0x80 )
- DSP_reset( this );
+ this->keys_down = 0;
+ this->echo_pos = 0;
+ this->noise_count = 0;
+ this->noise = 2;
- DSP_run_( this, count, out );
+ this->r.g.flags = 0xE0; /* reset, mute, echo off */
+ this->r.g.key_ons = 0;
+
+ ci->memset( this->voice_state, 0, sizeof this->voice_state );
+
+ int i;
+ for ( i = VOICE_COUNT; --i >= 0; )
+ {
+ struct voice_t* v = this->voice_state + i;
+ v->env_mode = state_release;
+ v->addr = ram.ram;
+ }
+
+ #if SPC_BRRCACHE
+ this->oldsize = 0;
+ for ( i = 0; i < 256; i++ )
+ this->wave_entry [i].start_addr = -1;
+ #endif
+
+#ifdef CPU_COLDFIRE
+ this->fir_ptr = fir_buf;
+ this->last_fir_ptr = &fir_buf [7];
+ ci->memset( fir_buf, 0, sizeof fir_buf );
+#else
+ this->fir_pos = 0;
+ ci->memset( this->fir_buf, 0, sizeof this->fir_buf );
+#endif
+
+ assert( offsetof (struct globals_t,unused9 [2]) == REGISTER_COUNT );
+ assert( sizeof (this->r.voice) == REGISTER_COUNT );
}
diff --git a/apps/codecs/spc/spc_emu.c b/apps/codecs/spc/spc_emu.c
new file mode 100644
index 0000000000..30aaf5d64b
--- /dev/null
+++ b/apps/codecs/spc/spc_emu.c
@@ -0,0 +1,378 @@
+/***************************************************************************
+ * __________ __ ___.
+ * Open \______ \ ____ ____ | | _\_ |__ _______ ___
+ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
+ * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
+ * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
+ * \/ \/ \/ \/ \/
+ * $Id$
+ *
+ * Copyright (C) 2006-2007 Adam Gashlin (hcs)
+ * Copyright (C) 2004-2007 Shay Green (blargg)
+ * Copyright (C) 2002 Brad Martin
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#include "codec.h"
+#include "codecs.h"
+#include "spc_codec.h"
+#include "spc_profiler.h"
+
+/* lovingly ripped off from Game_Music_Emu 0.5.2. http://www.slack.net/~ant/ */
+/* DSP Based on Brad Martin's OpenSPC DSP emulator */
+/* tag reading from sexyspc by John Brawn (John_Brawn@yahoo.com) and others */
+
+struct cpu_ram_t ram;
+
+/**************** Timers ****************/
+
+void Timer_run_( struct Timer* t, long time )
+{
+ /* when disabled, next_tick should always be in the future */
+ assert( t->enabled );
+
+ int elapsed = ((time - t->next_tick) >> t->shift) + 1;
+ t->next_tick += elapsed << t->shift;
+
+ elapsed += t->count;
+ if ( elapsed >= t->period ) /* avoid unnecessary division */
+ {
+ int n = elapsed / t->period;
+ elapsed -= n * t->period;
+ t->counter = (t->counter + n) & 15;
+ }
+ t->count = elapsed;
+}
+
+/**************** SPC emulator ****************/
+/* 1.024 MHz clock / 32000 samples per second */
+
+static void SPC_enable_rom( THIS, int enable )
+{
+ if ( this->rom_enabled != enable )
+ {
+ this->rom_enabled = enable;
+ ci->memcpy( RAM + ROM_ADDR, (enable ? this->boot_rom : this->extra_ram), ROM_SIZE );
+ /* TODO: ROM can still get overwritten when DSP writes to echo buffer */
+ }
+}
+
+void SPC_Init( THIS )
+{
+ this->timer [0].shift = 4 + 3; /* 8 kHz */
+ this->timer [1].shift = 4 + 3; /* 8 kHz */
+ this->timer [2].shift = 4; /* 8 kHz */
+
+ /* Put STOP instruction around memory to catch PC underflow/overflow. */
+ ci->memset( ram.padding1, 0xFF, sizeof ram.padding1 );
+ ci->memset( ram.padding2, 0xFF, sizeof ram.padding2 );
+
+ /* A few tracks read from the last four bytes of IPL ROM */
+ this->boot_rom [sizeof this->boot_rom - 2] = 0xC0;
+ this->boot_rom [sizeof this->boot_rom - 1] = 0xFF;
+ ci->memset( this->boot_rom, 0, sizeof this->boot_rom - 2 );
+}
+
+static void SPC_load_state( THIS, struct cpu_regs_t const* cpu_state,
+ const void* new_ram, const void* dsp_state )
+{
+ ci->memcpy(&(this->r),cpu_state,sizeof this->r);
+
+ /* ram */
+ ci->memcpy( RAM, new_ram, sizeof RAM );
+ ci->memcpy( this->extra_ram, RAM + ROM_ADDR, sizeof this->extra_ram );
+
+ /* boot rom (have to force enable_rom() to update it) */
+ this->rom_enabled = !(RAM [0xF1] & 0x80);
+ SPC_enable_rom( this, !this->rom_enabled );
+
+ /* dsp */
+ /* some SPCs rely on DSP immediately generating one sample */
+ this->extra_cycles = 32;
+ DSP_reset( &this->dsp );
+ int i;
+ for ( i = 0; i < REGISTER_COUNT; i++ )
+ DSP_write( &this->dsp, i, ((uint8_t const*) dsp_state) [i] );
+
+ /* timers */
+ for ( i = 0; i < TIMER_COUNT; i++ )
+ {
+ struct Timer* t = &this->timer [i];
+
+ t->next_tick = -EXTRA_CLOCKS;
+ t->enabled = (RAM [0xF1] >> i) & 1;
+ if ( !t->enabled )
+ t->next_tick = TIMER_DISABLED_TIME;
+ t->count = 0;
+ t->counter = RAM [0xFD + i] & 15;
+
+ int p = RAM [0xFA + i];
+ if ( !p )
+ p = 0x100;
+ t->period = p;
+ }
+
+ /* Handle registers which already give 0 when read by
+ setting RAM and not changing it.
+ Put STOP instruction in registers which can be read,
+ to catch attempted execution. */
+ RAM [0xF0] = 0;
+ RAM [0xF1] = 0;
+ RAM [0xF3] = 0xFF;
+ RAM [0xFA] = 0;
+ RAM [0xFB] = 0;
+ RAM [0xFC] = 0;
+ RAM [0xFD] = 0xFF;
+ RAM [0xFE] = 0xFF;
+ RAM [0xFF] = 0xFF;
+}
+
+static void clear_echo( THIS )
+{
+ if ( !(DSP_read( &this->dsp, 0x6C ) & 0x20) )
+ {
+ unsigned addr = 0x100 * DSP_read( &this->dsp, 0x6D );
+ size_t size = 0x800 * DSP_read( &this->dsp, 0x7D );
+ size_t max_size = sizeof RAM - addr;
+ if ( size > max_size )
+ size = sizeof RAM - addr;
+ ci->memset( RAM + addr, 0xFF, size );
+ }
+}
+
+int SPC_load_spc( THIS, const void* data, long size )
+{
+ struct spc_file_t const* spc = (struct spc_file_t const*) data;
+ struct cpu_regs_t regs;
+
+ if ( size < SPC_FILE_SIZE )
+ return -1;
+
+ if ( ci->memcmp( spc->signature, "SNES-SPC700 Sound File Data", 27 ) != 0 )
+ return -1;
+
+ regs.pc = spc->pc [1] * 0x100 + spc->pc [0];
+ regs.a = spc->a;
+ regs.x = spc->x;
+ regs.y = spc->y;
+ regs.status = spc->status;
+ regs.sp = spc->sp;
+
+ if ( (unsigned long) size >= sizeof *spc )
+ ci->memcpy( this->boot_rom, spc->ipl_rom, sizeof this->boot_rom );
+
+ SPC_load_state( this, &regs, spc->ram, spc->dsp );
+
+ clear_echo(this);
+
+ return 0;
+}
+
+/**************** DSP interaction ****************/
+void SPC_run_dsp_( THIS, long time )
+{
+ /* divide by CLOCKS_PER_SAMPLE */
+ int count = ((time - this->next_dsp) >> 5) + 1;
+ int32_t* buf = this->sample_buf;
+ this->sample_buf = buf + count;
+ this->next_dsp += count * CLOCKS_PER_SAMPLE;
+ DSP_run( &this->dsp, count, buf );
+}
+
+int SPC_read( THIS, unsigned addr, long const time )
+{
+ int result = RAM [addr];
+
+ if ( ((unsigned) (addr - 0xF0)) < 0x10 )
+ {
+ assert( 0xF0 <= addr && addr <= 0xFF );
+
+ /* counters */
+ int i = addr - 0xFD;
+ if ( i >= 0 )
+ {
+ struct Timer* t = &this->timer [i];
+ Timer_run( t, time );
+ result = t->counter;
+ t->counter = 0;
+ }
+ /* dsp */
+ else if ( addr == 0xF3 )
+ {
+ SPC_run_dsp( this, time );
+ result = DSP_read( &this->dsp, RAM [0xF2] & 0x7F );
+ }
+ }
+ return result;
+}
+
+void SPC_write( THIS, unsigned addr, int data, long const time )
+{
+ /* first page is very common */
+ if ( addr < 0xF0 )
+ {
+ RAM [addr] = (uint8_t) data;
+ }
+ else switch ( addr )
+ {
+ /* RAM */
+ default:
+ if ( addr < ROM_ADDR )
+ {
+ RAM [addr] = (uint8_t) data;
+ }
+ else
+ {
+ this->extra_ram [addr - ROM_ADDR] = (uint8_t) data;
+ if ( !this->rom_enabled )
+ RAM [addr] = (uint8_t) data;
+ }
+ break;
+
+ /* DSP */
+ /*case 0xF2:*/ /* mapped to RAM */
+ case 0xF3: {
+ SPC_run_dsp( this, time );
+ int reg = RAM [0xF2];
+ if ( reg < REGISTER_COUNT ) {
+ DSP_write( &this->dsp, reg, data );
+ }
+ else {
+ /*dprintf( "DSP write to $%02X\n", (int) reg ); */
+ }
+ break;
+ }
+
+ case 0xF0: /* Test register */
+ /*dprintf( "Wrote $%02X to $F0\n", (int) data ); */
+ break;
+
+ /* Config */
+ case 0xF1:
+ {
+ int i;
+ /* timers */
+ for ( i = 0; i < TIMER_COUNT; i++ )
+ {
+ struct Timer * t = this->timer+i;
+ if ( !(data & (1 << i)) )
+ {
+ t->enabled = 0;
+ t->next_tick = TIMER_DISABLED_TIME;
+ }
+ else if ( !t->enabled )
+ {
+ /* just enabled */
+ t->enabled = 1;
+ t->counter = 0;
+ t->count = 0;
+ t->next_tick = time;
+ }
+ }
+
+ /* port clears */
+ if ( data & 0x10 )
+ {
+ RAM [0xF4] = 0;
+ RAM [0xF5] = 0;
+ }
+ if ( data & 0x20 )
+ {
+ RAM [0xF6] = 0;
+ RAM [0xF7] = 0;
+ }
+
+ SPC_enable_rom( this, (data & 0x80) != 0 );
+ break;
+ }
+
+ /* Ports */
+ case 0xF4:
+ case 0xF5:
+ case 0xF6:
+ case 0xF7:
+ /* to do: handle output ports */
+ break;
+
+ /* verified on SNES that these are read/write (RAM) */
+ /*case 0xF8: */
+ /*case 0xF9: */
+
+ /* Timers */
+ case 0xFA:
+ case 0xFB:
+ case 0xFC: {
+ int i = addr - 0xFA;
+ struct Timer* t = &this->timer [i];
+ if ( (t->period & 0xFF) != data )
+ {
+ Timer_run( t, time );
+ this->timer[i].period = data ? data : 0x100;
+ }
+ break;
+ }
+
+ /* Counters (cleared on write) */
+ case 0xFD:
+ case 0xFE:
+ case 0xFF:
+ /*dprintf( "Wrote to counter $%02X\n", (int) addr ); */
+ this->timer [addr - 0xFD].counter = 0;
+ break;
+ }
+}
+
+/**************** Sample generation ****************/
+int SPC_play( THIS, long count, int32_t* out )
+{
+ int i;
+ assert( count % 2 == 0 ); /* output is always in pairs of samples */
+
+ long start_time = -(count >> 1) * CLOCKS_PER_SAMPLE - EXTRA_CLOCKS;
+
+ /* DSP output is made on-the-fly when DSP registers are read or written */
+ this->sample_buf = out;
+ this->next_dsp = start_time + CLOCKS_PER_SAMPLE;
+
+ /* Localize timer next_tick times and run them to the present to prevent
+ a running but ignored timer's next_tick from getting too far behind
+ and overflowing. */
+ for ( i = 0; i < TIMER_COUNT; i++ )
+ {
+ struct Timer* t = &this->timer [i];
+ if ( t->enabled )
+ {
+ t->next_tick += start_time + EXTRA_CLOCKS;
+ Timer_run( t, start_time );
+ }
+ }
+
+ /* Run from start_time to 0, pre-advancing by extra cycles from last run */
+ this->extra_cycles = CPU_run( this, start_time + this->extra_cycles ) +
+ EXTRA_CLOCKS;
+ if ( this->extra_cycles < 0 )
+ {
+ /*dprintf( "Unhandled instruction $%02X, pc = $%04X\n",
+ (int) CPU_read( r.pc ), (unsigned) r.pc ); */
+
+ return -1;
+ }
+
+ /* Catch DSP up to present */
+#if 0
+ ENTER_TIMER(cpu);
+#endif
+ SPC_run_dsp( this, -EXTRA_CLOCKS );
+#if 0
+ EXIT_TIMER(cpu);
+#endif
+ assert( this->next_dsp == CLOCKS_PER_SAMPLE - EXTRA_CLOCKS );
+ assert( this->sample_buf - out == count );
+
+ return 0;
+}
diff --git a/apps/codecs/spc/spc_profiler.c b/apps/codecs/spc/spc_profiler.c
new file mode 100644
index 0000000000..60e0ef7f82
--- /dev/null
+++ b/apps/codecs/spc/spc_profiler.c
@@ -0,0 +1,64 @@
+/***************************************************************************
+ * __________ __ ___.
+ * Open \______ \ ____ ____ | | _\_ |__ _______ ___
+ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
+ * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
+ * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
+ * \/ \/ \/ \/ \/
+ * $Id$
+ *
+ * Copyright (C) 2006-2007 Adam Gashlin (hcs)
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+/* lovingly ripped off from Game_Music_Emu 0.5.2. http://www.slack.net/~ant/ */
+/* DSP Based on Brad Martin's OpenSPC DSP emulator */
+/* tag reading from sexyspc by John Brawn (John_Brawn@yahoo.com) and others */
+
+#if defined(SPC_PROFILE) && defined(USEC_TIMER)
+
+#include "codec.h"
+#include "spc_codec.h"
+#define SPC_DEFINE_PROFILER_TIMERS
+#include "spc_profiler.h"
+
+void reset_profile_timers(void)
+{
+ RESET_TIMER(total);
+ RESET_TIMER(render);
+#if 0
+ RESET_TIMER(cpu);
+ RESET_TIMER(dsp);
+ RESET_TIMER(dsp_pregen);
+ RESET_TIMER(dsp_gen);
+ RESET_TIMER(dsp_mix);
+#endif
+}
+
+void print_timers(char * path)
+{
+ int logfd = ci->open("/spclog.txt",O_WRONLY|O_CREAT|O_APPEND);
+ ci->fdprintf(logfd,"%s:\t",path);
+ ci->fdprintf(logfd,"%10ld total\t",READ_TIMER(total));
+ PRINT_TIMER_PCT(render,total,"render");
+#if 0
+ PRINT_TIMER_PCT(cpu,total,"CPU");
+ PRINT_TIMER_PCT(dsp,total,"DSP");
+ ci->fdprintf(logfd,"(");
+ PRINT_TIMER_PCT(dsp_pregen,dsp,"pregen");
+ PRINT_TIMER_PCT(dsp_gen,dsp,"gen");
+ PRINT_TIMER_PCT(dsp_mix,dsp,"mix");
+#endif
+ ci->fdprintf(logfd,"\n");
+
+ ci->close(logfd);
+ logfd=-1;
+}
+
+#endif /* #if defined(SPC_PROFILE) && defined(USEC_TIMER) */
diff --git a/apps/codecs/spc/spc_profiler.h b/apps/codecs/spc/spc_profiler.h
index 99d3fdf16b..330d95bca7 100644
--- a/apps/codecs/spc/spc_profiler.h
+++ b/apps/codecs/spc/spc_profiler.h
@@ -5,6 +5,7 @@
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
+ * $Id$
*
* Copyright (C) 2006-2007 Adam Gashlin (hcs)
*
@@ -17,11 +18,19 @@
****************************************************************************/
/* a fun simple elapsed time profiler */
+#ifndef _SPC_PROFILER_H_
+#define _SPC_PROFILER_H_
#if defined(SPC_PROFILE) && defined(USEC_TIMER)
-#define CREATE_TIMER(name) static uint32_t spc_timer_##name##_start,\
+#ifdef SPC_DEFINE_PROFILER_TIMERS
+#define CREATE_TIMER(name) uint32_t spc_timer_##name##_start,\
spc_timer_##name##_total
+#else
+#define CREATE_TIMER(name) extern uint32_t spc_timer_##name##_start,\
+ spc_timer_##name##_total
+#endif
+
#define ENTER_TIMER(name) spc_timer_##name##_start=USEC_TIMER
#define EXIT_TIMER(name) spc_timer_##name##_total+=\
(USEC_TIMER-spc_timer_##name##_start)
@@ -43,38 +52,8 @@ CREATE_TIMER(dsp_gen);
CREATE_TIMER(dsp_mix);
#endif
-static void reset_profile_timers(void) {
- RESET_TIMER(total);
- RESET_TIMER(render);
-#if 0
- RESET_TIMER(cpu);
- RESET_TIMER(dsp);
- RESET_TIMER(dsp_pregen);
- RESET_TIMER(dsp_gen);
- RESET_TIMER(dsp_mix);
-#endif
-}
-
-static int logfd=-1;
-
-static void print_timers(char * path) {
- logfd = ci->open("/spclog.txt",O_WRONLY|O_CREAT|O_APPEND);
- ci->fdprintf(logfd,"%s:\t",path);
- ci->fdprintf(logfd,"%10ld total\t",READ_TIMER(total));
- PRINT_TIMER_PCT(render,total,"render");
-#if 0
- PRINT_TIMER_PCT(cpu,total,"CPU");
- PRINT_TIMER_PCT(dsp,total,"DSP");
- ci->fdprintf(logfd,"(");
- PRINT_TIMER_PCT(dsp_pregen,dsp,"pregen");
- PRINT_TIMER_PCT(dsp_gen,dsp,"gen");
- PRINT_TIMER_PCT(dsp_mix,dsp,"mix");
-#endif
- ci->fdprintf(logfd,"\n");
-
- ci->close(logfd);
- logfd=-1;
-}
+void reset_profile_timers(void);
+void print_timers(char * path);
#else
@@ -87,3 +66,5 @@ static void print_timers(char * path) {
#define reset_profile_timers()
#endif
+
+#endif /* _SPC_PROFILER_H_ */