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Diffstat (limited to 'qemu/hw/audio/pcspk.c')
-rw-r--r--qemu/hw/audio/pcspk.c214
1 files changed, 0 insertions, 214 deletions
diff --git a/qemu/hw/audio/pcspk.c b/qemu/hw/audio/pcspk.c
deleted file mode 100644
index f9afc8eda..000000000
--- a/qemu/hw/audio/pcspk.c
+++ /dev/null
@@ -1,214 +0,0 @@
-/*
- * QEMU PC speaker emulation
- *
- * Copyright (c) 2006 Joachim Henke
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-#include "qemu/osdep.h"
-#include "hw/hw.h"
-#include "hw/i386/pc.h"
-#include "hw/isa/isa.h"
-#include "hw/audio/audio.h"
-#include "audio/audio.h"
-#include "qemu/timer.h"
-#include "hw/timer/i8254.h"
-#include "hw/audio/pcspk.h"
-
-#define PCSPK_BUF_LEN 1792
-#define PCSPK_SAMPLE_RATE 32000
-#define PCSPK_MAX_FREQ (PCSPK_SAMPLE_RATE >> 1)
-#define PCSPK_MIN_COUNT ((PIT_FREQ + PCSPK_MAX_FREQ - 1) / PCSPK_MAX_FREQ)
-
-#define PC_SPEAKER(obj) OBJECT_CHECK(PCSpkState, (obj), TYPE_PC_SPEAKER)
-
-typedef struct {
- ISADevice parent_obj;
-
- MemoryRegion ioport;
- uint32_t iobase;
- uint8_t sample_buf[PCSPK_BUF_LEN];
- QEMUSoundCard card;
- SWVoiceOut *voice;
- void *pit;
- unsigned int pit_count;
- unsigned int samples;
- unsigned int play_pos;
- int data_on;
- int dummy_refresh_clock;
-} PCSpkState;
-
-static const char *s_spk = "pcspk";
-static PCSpkState *pcspk_state;
-
-static inline void generate_samples(PCSpkState *s)
-{
- unsigned int i;
-
- if (s->pit_count) {
- const uint32_t m = PCSPK_SAMPLE_RATE * s->pit_count;
- const uint32_t n = ((uint64_t)PIT_FREQ << 32) / m;
-
- /* multiple of wavelength for gapless looping */
- s->samples = (PCSPK_BUF_LEN * PIT_FREQ / m * m / (PIT_FREQ >> 1) + 1) >> 1;
- for (i = 0; i < s->samples; ++i)
- s->sample_buf[i] = (64 & (n * i >> 25)) - 32;
- } else {
- s->samples = PCSPK_BUF_LEN;
- for (i = 0; i < PCSPK_BUF_LEN; ++i)
- s->sample_buf[i] = 128; /* silence */
- }
-}
-
-static void pcspk_callback(void *opaque, int free)
-{
- PCSpkState *s = opaque;
- PITChannelInfo ch;
- unsigned int n;
-
- pit_get_channel_info(s->pit, 2, &ch);
-
- if (ch.mode != 3) {
- return;
- }
-
- n = ch.initial_count;
- /* avoid frequencies that are not reproducible with sample rate */
- if (n < PCSPK_MIN_COUNT)
- n = 0;
-
- if (s->pit_count != n) {
- s->pit_count = n;
- s->play_pos = 0;
- generate_samples(s);
- }
-
- while (free > 0) {
- n = audio_MIN(s->samples - s->play_pos, (unsigned int)free);
- n = AUD_write(s->voice, &s->sample_buf[s->play_pos], n);
- if (!n)
- break;
- s->play_pos = (s->play_pos + n) % s->samples;
- free -= n;
- }
-}
-
-static int pcspk_audio_init(ISABus *bus)
-{
- PCSpkState *s = pcspk_state;
- struct audsettings as = {PCSPK_SAMPLE_RATE, 1, AUD_FMT_U8, 0};
-
- AUD_register_card(s_spk, &s->card);
-
- s->voice = AUD_open_out(&s->card, s->voice, s_spk, s, pcspk_callback, &as);
- if (!s->voice) {
- AUD_log(s_spk, "Could not open voice\n");
- return -1;
- }
-
- return 0;
-}
-
-static uint64_t pcspk_io_read(void *opaque, hwaddr addr,
- unsigned size)
-{
- PCSpkState *s = opaque;
- PITChannelInfo ch;
-
- pit_get_channel_info(s->pit, 2, &ch);
-
- s->dummy_refresh_clock ^= (1 << 4);
-
- return ch.gate | (s->data_on << 1) | s->dummy_refresh_clock |
- (ch.out << 5);
-}
-
-static void pcspk_io_write(void *opaque, hwaddr addr, uint64_t val,
- unsigned size)
-{
- PCSpkState *s = opaque;
- const int gate = val & 1;
-
- s->data_on = (val >> 1) & 1;
- pit_set_gate(s->pit, 2, gate);
- if (s->voice) {
- if (gate) /* restart */
- s->play_pos = 0;
- AUD_set_active_out(s->voice, gate & s->data_on);
- }
-}
-
-static const MemoryRegionOps pcspk_io_ops = {
- .read = pcspk_io_read,
- .write = pcspk_io_write,
- .impl = {
- .min_access_size = 1,
- .max_access_size = 1,
- },
-};
-
-static void pcspk_initfn(Object *obj)
-{
- PCSpkState *s = PC_SPEAKER(obj);
-
- memory_region_init_io(&s->ioport, OBJECT(s), &pcspk_io_ops, s, "pcspk", 1);
-}
-
-static void pcspk_realizefn(DeviceState *dev, Error **errp)
-{
- ISADevice *isadev = ISA_DEVICE(dev);
- PCSpkState *s = PC_SPEAKER(dev);
-
- isa_register_ioport(isadev, &s->ioport, s->iobase);
-
- pcspk_state = s;
-}
-
-static Property pcspk_properties[] = {
- DEFINE_PROP_UINT32("iobase", PCSpkState, iobase, -1),
- DEFINE_PROP_PTR("pit", PCSpkState, pit),
- DEFINE_PROP_END_OF_LIST(),
-};
-
-static void pcspk_class_initfn(ObjectClass *klass, void *data)
-{
- DeviceClass *dc = DEVICE_CLASS(klass);
-
- dc->realize = pcspk_realizefn;
- set_bit(DEVICE_CATEGORY_SOUND, dc->categories);
- dc->props = pcspk_properties;
- /* Reason: pointer property "pit", realize sets global pcspk_state */
- dc->cannot_instantiate_with_device_add_yet = true;
-}
-
-static const TypeInfo pcspk_info = {
- .name = TYPE_PC_SPEAKER,
- .parent = TYPE_ISA_DEVICE,
- .instance_size = sizeof(PCSpkState),
- .instance_init = pcspk_initfn,
- .class_init = pcspk_class_initfn,
-};
-
-static void pcspk_register(void)
-{
- type_register_static(&pcspk_info);
- isa_register_soundhw("pcspk", "PC speaker", pcspk_audio_init);
-}
-type_init(pcspk_register)