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e2a760bcbd
Sent: Tuesday, December 09, 2008 8:13 PM To: submit@mamedev.org Cc: atariace@hotmail.com Subject: [patch] Add device parameter to stream_create() Hi mamedev, This patch adds the sound device to the parameters passed to stream_create so that the global Machine can be removed from streams.c. It assumes my previous patch which added CUSTOM_START and SAMPLES_START has been applied. ~aa
610 lines
16 KiB
C
610 lines
16 KiB
C
/*
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c352.c - Namco C352 custom PCM chip emulation
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v1.1
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By R. Belmont
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Additional code by cync and the hoot development team
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Thanks to Cap of VivaNonno for info and The_Author for preliminary reverse-engineering
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Chip specs:
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32 voices
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Supports 8-bit linear and 8-bit muLaw samples
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Output: digital, 16 bit, 4 channels
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Output sample rate is the input clock / 384.
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*/
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#include <math.h>
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#include "sndintrf.h"
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#include "streams.h"
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#include "c352.h"
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#define VERBOSE (0)
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#define LOG(x) do { if (VERBOSE) logerror x; } while (0)
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// flags
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enum {
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C352_FLG_BUSY = 0x8000, // channel is busy
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C352_FLG_KEYON = 0x4000, // Keyon
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C352_FLG_KEYOFF = 0x2000, // Keyoff
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C352_FLG_LOOPTRG = 0x1000, // Loop Trigger
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C352_FLG_LOOPHIST = 0x0800, // Loop History
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C352_FLG_FM = 0x0400, // Frequency Modulation
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C352_FLG_PHASERL = 0x0200, // Rear Left invert phase 180 degrees
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C352_FLG_PHASEFL = 0x0100, // Front Left invert phase 180 degrees
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C352_FLG_PHASEFR = 0x0080, // invert phase 180 degrees (e.g. flip sign of sample)
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C352_FLG_LDIR = 0x0040, // loop direction
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C352_FLG_LINK = 0x0020, // "long-format" sample (can't loop, not sure what else it means)
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C352_FLG_NOISE = 0x0010, // play noise instead of sample
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C352_FLG_MULAW = 0x0008, // sample is mulaw instead of linear 8-bit PCM
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C352_FLG_FILTER = 0x0004, // don't apply filter
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C352_FLG_REVLOOP = 0x0003, // loop backwards
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C352_FLG_LOOP = 0x0002, // loop forward
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C352_FLG_REVERSE = 0x0001, // play sample backwards
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};
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typedef struct
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{
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UINT8 vol_l;
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UINT8 vol_r;
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UINT8 vol_l2;
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UINT8 vol_r2;
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UINT8 bank;
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INT16 noise;
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INT16 noisebuf;
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UINT16 noisecnt;
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UINT16 pitch;
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UINT16 start_addr;
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UINT16 end_addr;
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UINT16 repeat_addr;
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UINT32 flag;
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UINT16 start;
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UINT16 repeat;
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UINT32 current_addr;
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UINT32 pos;
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} c352_ch_t;
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struct c352_info
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{
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sound_stream *stream;
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c352_ch_t c352_ch[32];
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unsigned char *c352_rom_samples;
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UINT32 c352_rom_length;
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int sample_rate_base;
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long channel_l[2048*2];
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long channel_r[2048*2];
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long channel_l2[2048*2];
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long channel_r2[2048*2];
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short mulaw_table[256];
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unsigned int mseq_reg;
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};
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// noise generator
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static int get_mseq_bit(struct c352_info *info)
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{
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unsigned int mask = (1 << (7 - 1));
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unsigned int reg = info->mseq_reg;
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unsigned int bit = reg & (1 << (17 - 1));
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if (bit)
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{
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reg = ((reg ^ mask) << 1) | 1;
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}
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else
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{
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reg = reg << 1;
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}
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info->mseq_reg = reg;
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return (reg & 1);
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}
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static void c352_mix_one_channel(struct c352_info *info, unsigned long ch, long sample_count)
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{
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int i;
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signed short sample, nextsample;
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signed short noisebuf;
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UINT16 noisecnt;
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INT32 frequency, delta, offset, cnt, flag;
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UINT32 bank;
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UINT32 pos, len;
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frequency = info->c352_ch[ch].pitch;
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delta=frequency;
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pos = info->c352_ch[ch].current_addr; // sample pointer
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offset = info->c352_ch[ch].pos; // 16.16 fixed-point offset into the sample
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flag = info->c352_ch[ch].flag;
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bank = info->c352_ch[ch].bank << 16;
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noisecnt = info->c352_ch[ch].noisecnt;
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noisebuf = info->c352_ch[ch].noisebuf;
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len = info->c352_rom_length;
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for(i = 0 ; (i < sample_count) && (flag & C352_FLG_BUSY) ; i++)
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{
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offset += delta;
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cnt = (offset>>16)&0x7fff;
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if (cnt) // if there is a whole sample part, chop it off now that it's been applied
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{
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offset &= 0xffff;
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}
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if (pos > len)
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{
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info->c352_ch[ch].flag &= ~C352_FLG_BUSY;
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return;
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}
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sample = (char)info->c352_rom_samples[pos];
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nextsample = (char)info->c352_rom_samples[pos+cnt];
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// sample is muLaw, not 8-bit linear (Fighting Layer uses this extensively)
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if (flag & C352_FLG_MULAW)
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{
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sample = info->mulaw_table[(unsigned char)sample];
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nextsample = info->mulaw_table[(unsigned char)nextsample];
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}
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else
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{
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sample <<= 8;
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nextsample <<= 8;
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}
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// play noise instead of sample data
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if (flag & C352_FLG_NOISE)
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{
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int noise_level = 0x8000;
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sample = info->c352_ch[ch].noise = (info->c352_ch[ch].noise << 1) | get_mseq_bit(info);
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sample = (sample & (noise_level - 1)) - (noise_level >> 1);
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if (sample > 0x7f)
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{
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sample = 0x7f;
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}
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else if (sample < 0)
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{
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sample = 0xff;
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}
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sample = info->mulaw_table[(unsigned char)sample];
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if ( (pos+cnt) == pos )
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{
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noisebuf += sample;
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noisecnt++;
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sample = noisebuf / noisecnt;
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}
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else
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{
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if ( noisecnt )
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{
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sample = noisebuf / noisecnt;
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}
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else
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{
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sample = info->mulaw_table[0x7f]; // Nearest sound(s) is here.
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}
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noisebuf = 0;
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noisecnt = ( flag & C352_FLG_FILTER ) ? 0 : 1;
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}
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}
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// apply linear interpolation
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if ( (flag & (C352_FLG_FILTER | C352_FLG_NOISE)) == 0 )
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{
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sample = (short)(sample + ((nextsample-sample) * (((double)(0x0000ffff&offset) )/0x10000)));
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}
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if ( flag & C352_FLG_PHASEFL )
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{
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info->channel_l[i] += ((-sample * info->c352_ch[ch].vol_l)>>8);
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}
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else
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{
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info->channel_l[i] += ((sample * info->c352_ch[ch].vol_l)>>8);
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}
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if ( flag & C352_FLG_PHASEFR )
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{
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info->channel_r[i] += ((-sample * info->c352_ch[ch].vol_r)>>8);
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}
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else
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{
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info->channel_r[i] += ((sample * info->c352_ch[ch].vol_r)>>8);
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}
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if ( flag & C352_FLG_PHASERL )
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{
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info->channel_l2[i] += ((-sample * info->c352_ch[ch].vol_l2)>>8);
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}
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else
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{
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info->channel_l2[i] += ((sample * info->c352_ch[ch].vol_l2)>>8);
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}
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info->channel_r2[i] += ((sample * info->c352_ch[ch].vol_r2)>>8);
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if ( (flag & C352_FLG_REVERSE) && (flag & C352_FLG_LOOP) )
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{
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if ( !(flag & C352_FLG_LDIR) )
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{
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pos += cnt;
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if (
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(((pos&0xFFFF) > info->c352_ch[ch].end_addr) && ((pos&0xFFFF) < info->c352_ch[ch].start) && (info->c352_ch[ch].start > info->c352_ch[ch].end_addr) ) ||
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(((pos&0xFFFF) > info->c352_ch[ch].end_addr) && ((pos&0xFFFF) > info->c352_ch[ch].start) && (info->c352_ch[ch].start < info->c352_ch[ch].end_addr) ) ||
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((pos > (bank|0xFFFF)) && (info->c352_ch[ch].end_addr == 0xFFFF))
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)
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{
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info->c352_ch[ch].flag |= C352_FLG_LDIR;
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info->c352_ch[ch].flag |= C352_FLG_LOOPHIST;
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}
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}
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else
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{
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pos -= cnt;
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if (
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(((pos&0xFFFF) < info->c352_ch[ch].repeat) && ((pos&0xFFFF) < info->c352_ch[ch].end_addr) && (info->c352_ch[ch].end_addr > info->c352_ch[ch].start) ) ||
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(((pos&0xFFFF) < info->c352_ch[ch].repeat) && ((pos&0xFFFF) > info->c352_ch[ch].end_addr) && (info->c352_ch[ch].end_addr < info->c352_ch[ch].start) ) ||
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((pos < bank) && (info->c352_ch[ch].repeat == 0x0000))
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)
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{
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info->c352_ch[ch].flag &= ~C352_FLG_LDIR;
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info->c352_ch[ch].flag |= C352_FLG_LOOPHIST;
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}
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}
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}
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else if ( flag & C352_FLG_REVERSE )
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{
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pos -= cnt;
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if (
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(((pos&0xFFFF) < info->c352_ch[ch].end_addr) && ((pos&0xFFFF) < info->c352_ch[ch].start) && (info->c352_ch[ch].start > info->c352_ch[ch].end_addr) ) ||
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(((pos&0xFFFF) < info->c352_ch[ch].end_addr) && ((pos&0xFFFF) > info->c352_ch[ch].start) && (info->c352_ch[ch].start < info->c352_ch[ch].end_addr) ) ||
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((pos < bank) && (info->c352_ch[ch].end_addr == 0x0000))
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)
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{
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if ( (flag & C352_FLG_LINK) && (flag & C352_FLG_LOOP) )
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{
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info->c352_ch[ch].bank = info->c352_ch[ch].start_addr & 0xFF;
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info->c352_ch[ch].start_addr = info->c352_ch[ch].repeat_addr;
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info->c352_ch[ch].start = info->c352_ch[ch].start_addr;
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info->c352_ch[ch].repeat = info->c352_ch[ch].repeat_addr;
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pos = (info->c352_ch[ch].bank<<16) + info->c352_ch[ch].start_addr;
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info->c352_ch[ch].flag |= C352_FLG_LOOPHIST;
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}
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else if (flag & C352_FLG_LOOP)
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{
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pos = (pos & 0xFF0000) + info->c352_ch[ch].repeat;
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info->c352_ch[ch].flag |= C352_FLG_LOOPHIST;
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}
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else
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{
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info->c352_ch[ch].flag |= C352_FLG_KEYOFF;
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info->c352_ch[ch].flag &= ~C352_FLG_BUSY;
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return;
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}
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}
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} else {
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pos += cnt;
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if (
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(((pos&0xFFFF) > info->c352_ch[ch].end_addr) && ((pos&0xFFFF) < info->c352_ch[ch].start) && (info->c352_ch[ch].start > info->c352_ch[ch].end_addr) ) ||
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(((pos&0xFFFF) > info->c352_ch[ch].end_addr) && ((pos&0xFFFF) > info->c352_ch[ch].start) && (info->c352_ch[ch].start < info->c352_ch[ch].end_addr) ) ||
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((pos > (bank|0xFFFF)) && (info->c352_ch[ch].end_addr == 0xFFFF))
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)
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{
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if ( (flag & C352_FLG_LINK) && (flag & C352_FLG_LOOP) )
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{
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info->c352_ch[ch].bank = info->c352_ch[ch].start_addr & 0xFF;
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info->c352_ch[ch].start_addr = info->c352_ch[ch].repeat_addr;
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info->c352_ch[ch].start = info->c352_ch[ch].start_addr;
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info->c352_ch[ch].repeat = info->c352_ch[ch].repeat_addr;
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pos = (info->c352_ch[ch].bank<<16) + info->c352_ch[ch].start_addr;
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info->c352_ch[ch].flag |= C352_FLG_LOOPHIST;
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}
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else if (flag & C352_FLG_LOOP)
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{
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pos = (pos & 0xFF0000) + info->c352_ch[ch].repeat;
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info->c352_ch[ch].flag |= C352_FLG_LOOPHIST;
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}
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else
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{
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info->c352_ch[ch].flag |= C352_FLG_KEYOFF;
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info->c352_ch[ch].flag &= ~C352_FLG_BUSY;
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return;
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}
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}
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}
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}
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info->c352_ch[ch].noisecnt = noisecnt;
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info->c352_ch[ch].noisebuf = noisebuf;
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info->c352_ch[ch].pos = offset;
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info->c352_ch[ch].current_addr = pos;
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}
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static void c352_update(void *param, stream_sample_t **inputs, stream_sample_t **buf, int sample_count)
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{
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struct c352_info *info = param;
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int i, j;
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stream_sample_t *bufferl = buf[0];
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stream_sample_t *bufferr = buf[1];
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stream_sample_t *bufferl2 = buf[2];
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stream_sample_t *bufferr2 = buf[3];
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for(i = 0 ; i < sample_count ; i++)
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{
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info->channel_l[i] = info->channel_r[i] = info->channel_l2[i] = info->channel_r2[i] = 0;
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}
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for (j = 0 ; j < 32 ; j++)
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{
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c352_mix_one_channel(info, j, sample_count);
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}
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for(i = 0 ; i < sample_count ; i++)
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{
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*bufferl++ = (short) (info->channel_l[i] >>3);
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*bufferr++ = (short) (info->channel_r[i] >>3);
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*bufferl2++ = (short) (info->channel_l2[i] >>3);
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*bufferr2++ = (short) (info->channel_r2[i] >>3);
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}
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}
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static unsigned short c352_read_reg16(struct c352_info *info, unsigned long address)
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{
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unsigned long chan;
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unsigned short val;
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stream_update(info->stream);
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chan = (address >> 4) & 0xfff;
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if (chan > 31)
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{
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val = 0;
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}
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else
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{
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if ((address & 0xf) == 6)
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{
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val = info->c352_ch[chan].flag;
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}
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else
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{
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val = 0;
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}
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}
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return val;
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}
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static void c352_write_reg16(struct c352_info *info, unsigned long address, unsigned short val)
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{
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unsigned long chan;
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int i;
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stream_update(info->stream);
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chan = (address >> 4) & 0xfff;
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if ( address >= 0x400 )
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{
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switch(address)
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{
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case 0x404: // execute key-ons/offs
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for ( i = 0 ; i <= 31 ; i++ )
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{
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if ( info->c352_ch[i].flag & C352_FLG_KEYON )
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{
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info->c352_ch[i].current_addr = (info->c352_ch[i].bank << 16) + info->c352_ch[i].start_addr;
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info->c352_ch[i].start = info->c352_ch[i].start_addr;
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info->c352_ch[i].repeat = info->c352_ch[i].repeat_addr;
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info->c352_ch[i].noisebuf = 0;
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info->c352_ch[i].noisecnt = 0;
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info->c352_ch[i].flag &= ~(C352_FLG_KEYON | C352_FLG_LOOPHIST);
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info->c352_ch[i].flag |= C352_FLG_BUSY;
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}
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else if ( info->c352_ch[i].flag & C352_FLG_KEYOFF )
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{
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info->c352_ch[i].flag &= ~C352_FLG_BUSY;
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info->c352_ch[i].flag &= ~(C352_FLG_KEYOFF);
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}
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}
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break;
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default:
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break;
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}
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return;
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}
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if (chan > 31)
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{
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LOG(("C352 CTRL %08lx %04x\n", address, val));
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return;
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}
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switch(address & 0xf)
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{
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case 0x0:
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// volumes (output 1)
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LOG(("CH %02ld LVOL %02x RVOL %02x\n", chan, val & 0xff, val >> 8));
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info->c352_ch[chan].vol_l = val & 0xff;
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info->c352_ch[chan].vol_r = val >> 8;
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break;
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case 0x2:
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// volumes (output 2)
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LOG(("CH %02ld RLVOL %02x RRVOL %02x\n", chan, val & 0xff, val >> 8));
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info->c352_ch[chan].vol_l2 = val & 0xff;
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info->c352_ch[chan].vol_r2 = val >> 8;
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break;
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case 0x4:
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// pitch
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LOG(("CH %02ld PITCH %04x\n", chan, val));
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info->c352_ch[chan].pitch = val;
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break;
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case 0x6:
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// flags
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LOG(("CH %02ld FLAG %02x\n", chan, val));
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info->c352_ch[chan].flag = val;
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break;
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case 0x8:
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// bank (bits 16-31 of address);
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info->c352_ch[chan].bank = val & 0xff;
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LOG(("CH %02ld BANK %02x", chan, info->c352_ch[chan].bank));
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break;
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case 0xa:
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// start address
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LOG(("CH %02ld SADDR %04x\n", chan, val));
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info->c352_ch[chan].start_addr = val;
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break;
|
|
|
|
case 0xc:
|
|
// end address
|
|
LOG(("CH %02ld EADDR %04x\n", chan, val));
|
|
info->c352_ch[chan].end_addr = val;
|
|
break;
|
|
|
|
case 0xe:
|
|
// loop address
|
|
LOG(("CH %02ld LADDR %04x\n", chan, val));
|
|
info->c352_ch[chan].repeat_addr = val;
|
|
break;
|
|
|
|
default:
|
|
LOG(("CH %02ld UNKN %01lx %04x", chan, address & 0xf, val));
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void c352_init(struct c352_info *info, const device_config *device)
|
|
{
|
|
int i;
|
|
double x_max = 32752.0;
|
|
double y_max = 127.0;
|
|
double u = 10.0;
|
|
|
|
// clear all channels states
|
|
memset(info->c352_ch, 0, sizeof(c352_ch_t)*32);
|
|
|
|
// generate mulaw table for mulaw format samples
|
|
for (i = 0; i < 256; i++)
|
|
{
|
|
double y = (double) (i & 0x7f);
|
|
double x = (exp (y / y_max * log (1.0 + u)) - 1.0) * x_max / u;
|
|
|
|
if (i & 0x80)
|
|
{
|
|
x = -x;
|
|
}
|
|
info->mulaw_table[i] = (short)x;
|
|
}
|
|
|
|
// init noise generator
|
|
info->mseq_reg = 0x12345678;
|
|
|
|
// register save state info
|
|
for (i = 0; i < 32; i++)
|
|
{
|
|
state_save_register_device_item(device, i, info->c352_ch[i].vol_l);
|
|
state_save_register_device_item(device, i, info->c352_ch[i].vol_r);
|
|
state_save_register_device_item(device, i, info->c352_ch[i].vol_l2);
|
|
state_save_register_device_item(device, i, info->c352_ch[i].vol_r2);
|
|
state_save_register_device_item(device, i, info->c352_ch[i].bank);
|
|
state_save_register_device_item(device, i, info->c352_ch[i].noise);
|
|
state_save_register_device_item(device, i, info->c352_ch[i].noisebuf);
|
|
state_save_register_device_item(device, i, info->c352_ch[i].noisecnt);
|
|
state_save_register_device_item(device, i, info->c352_ch[i].pitch);
|
|
state_save_register_device_item(device, i, info->c352_ch[i].start_addr);
|
|
state_save_register_device_item(device, i, info->c352_ch[i].end_addr);
|
|
state_save_register_device_item(device, i, info->c352_ch[i].repeat_addr);
|
|
state_save_register_device_item(device, i, info->c352_ch[i].flag);
|
|
state_save_register_device_item(device, i, info->c352_ch[i].start);
|
|
state_save_register_device_item(device, i, info->c352_ch[i].repeat);
|
|
state_save_register_device_item(device, i, info->c352_ch[i].current_addr);
|
|
state_save_register_device_item(device, i, info->c352_ch[i].pos);
|
|
}
|
|
}
|
|
|
|
static SND_START( c352 )
|
|
{
|
|
struct c352_info *info;
|
|
|
|
info = auto_malloc(sizeof(*info));
|
|
memset(info, 0, sizeof(*info));
|
|
|
|
info->c352_rom_samples = device->region;
|
|
info->c352_rom_length = device->regionbytes;
|
|
|
|
info->sample_rate_base = clock / 192;
|
|
|
|
info->stream = stream_create(device, 0, 4, info->sample_rate_base, info, c352_update);
|
|
|
|
c352_init(info, device);
|
|
|
|
return info;
|
|
}
|
|
|
|
|
|
READ16_HANDLER( c352_0_r )
|
|
{
|
|
return(c352_read_reg16(sndti_token(SOUND_C352, 0), offset*2));
|
|
}
|
|
|
|
WRITE16_HANDLER( c352_0_w )
|
|
{
|
|
if (mem_mask == 0xffff)
|
|
{
|
|
c352_write_reg16(sndti_token(SOUND_C352, 0), offset*2, data);
|
|
}
|
|
else
|
|
{
|
|
logerror("C352: byte-wide write unsupported at this time!\n");
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/**************************************************************************
|
|
* Generic get_info
|
|
**************************************************************************/
|
|
|
|
static SND_SET_INFO( c352 )
|
|
{
|
|
switch (state)
|
|
{
|
|
/* no parameters to set */
|
|
}
|
|
}
|
|
|
|
|
|
SND_GET_INFO( c352 )
|
|
{
|
|
switch (state)
|
|
{
|
|
/* --- the following bits of info are returned as 64-bit signed integers --- */
|
|
|
|
/* --- the following bits of info are returned as pointers to data or functions --- */
|
|
case SNDINFO_PTR_SET_INFO: info->set_info = SND_SET_INFO_NAME( c352 ); break;
|
|
case SNDINFO_PTR_START: info->start = SND_START_NAME( c352 ); break;
|
|
case SNDINFO_PTR_STOP: /* nothing */ break;
|
|
case SNDINFO_PTR_RESET: /* nothing */ break;
|
|
|
|
/* --- the following bits of info are returned as NULL-terminated strings --- */
|
|
case SNDINFO_STR_NAME: info->s = "C352"; break;
|
|
case SNDINFO_STR_CORE_FAMILY: info->s = "Namco PCM"; break;
|
|
case SNDINFO_STR_CORE_VERSION: info->s = "1.1"; break;
|
|
case SNDINFO_STR_CORE_FILE: info->s = __FILE__; break;
|
|
case SNDINFO_STR_CORE_CREDITS: info->s = "Copyright Nicola Salmoria and the MAME Team"; break;
|
|
}
|
|
}
|
|
|