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apu: Add VP framework

This commit is contained in:
Jannik Vogel 2019-02-11 20:05:37 +01:00 committed by mborgerson
parent 46dccb0182
commit f2901a24d4
1 changed files with 32 additions and 1 deletions
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33
hw/xbox/mcpx_apu.c
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@ -2,7 +2,7 @@
* QEMU MCPX Audio Processing Unit implementation
*
* Copyright (c) 2012 espes
* Copyright (c) 2018 Jannik Vogel
* Copyright (c) 2018-2019 Jannik Vogel
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@ -25,6 +25,9 @@
#include "cpu.h"
#include "hw/xbox/dsp/dsp.h"
#define NUM_SAMPLES_PER_FRAME 32
#define NUM_MIXBINS 32
#include "hw/xbox/mcpx_apu.h"
#define NV_PAPU_ISTS 0x00001000
@ -804,12 +807,28 @@ static const MemoryRegionOps ep_ops = {
.write = ep_write,
};
static void process_voice(MCPXAPUState *d,
int32_t mixbins[NUM_MIXBINS][NUM_SAMPLES_PER_FRAME],
uint32_t voice)
{
/* FIXME: Implement */
}
/* This routine must run at 1500 Hz */
/* TODO: this should be on a thread so it waits on the voice lock */
static void se_frame(void *opaque)
{
MCPXAPUState *d = opaque;
int mixbin;
int sample;
timer_mod(d->se.frame_timer, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) + 10);
MCPX_DPRINTF("mcpx frame ping\n");
/* Buffer for all mixbins for this frame */
int32_t mixbins[NUM_MIXBINS][NUM_SAMPLES_PER_FRAME] = { 0 };
/* Process all voices, mixing each into the affected MIXBINs */
int list;
for (list = 0; list < 3; list++) {
hwaddr top, current, next;
@ -828,12 +847,24 @@ static void se_frame(void *opaque)
NV_PAVS_VOICE_PAR_STATE_ACTIVE_VOICE)) {
MCPX_DPRINTF("voice %d not active...!\n", d->regs[current]);
fe_method(d, SE2FE_IDLE_VOICE, d->regs[current]);
} else {
process_voice(d, mixbins, d->regs[current]);
}
MCPX_DPRINTF("next voice %d\n", d->regs[next]);
d->regs[current] = d->regs[next];
}
}
/* Write VP results to the GP DSP MIXBUF */
for (mixbin = 0; mixbin < NUM_MIXBINS; mixbin++) {
for (sample = 0; sample < NUM_SAMPLES_PER_FRAME; sample++) {
dsp_write_memory(d->gp.dsp,
'X', GP_DSP_MIXBUF_BASE + mixbin * 0x20 + sample,
mixbins[mixbin][sample] & 0xFFFFFF);
}
}
/* Kickoff DSP processing */
if ((d->gp.regs[NV_PAPU_GPRST] & NV_PAPU_GPRST_GPRST)
&& (d->gp.regs[NV_PAPU_GPRST] & NV_PAPU_GPRST_GPDSPRST)) {
dsp_start_frame(d->gp.dsp);