qemu/audio/fmodaudio.c

470 lines
12 KiB
C
Raw Normal View History

/*
* QEMU FMOD audio output driver
*
* Copyright (c) 2004 Vassili Karpov (malc)
*
* 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 <fmod.h>
#include <fmod_errors.h>
#include "vl.h"
#include "audio/audio_int.h"
typedef struct FMODVoice {
HWVoice hw;
unsigned int old_pos;
FSOUND_SAMPLE *fmod_sample;
int channel;
} FMODVoice;
#define dolog(...) AUD_log ("fmod", __VA_ARGS__)
#ifdef DEBUG
#define ldebug(...) dolog (__VA_ARGS__)
#else
#define ldebug(...)
#endif
#define QC_FMOD_DRV "QEMU_FMOD_DRV"
#define QC_FMOD_FREQ "QEMU_FMOD_FREQ"
#define QC_FMOD_SAMPLES "QEMU_FMOD_SAMPLES"
#define QC_FMOD_CHANNELS "QEMU_FMOD_CHANNELS"
#define QC_FMOD_BUFSIZE "QEMU_FMOD_BUFSIZE"
#define QC_FMOD_THRESHOLD "QEMU_FMOD_THRESHOLD"
static struct {
int nb_samples;
int freq;
int nb_channels;
int bufsize;
int threshold;
} conf = {
2048,
44100,
1,
0,
128
};
#define errstr() FMOD_ErrorString (FSOUND_GetError ())
static int fmod_hw_write (SWVoice *sw, void *buf, int len)
{
return pcm_hw_write (sw, buf, len);
}
static void fmod_clear_sample (FMODVoice *fmd)
{
HWVoice *hw = &fmd->hw;
int status;
void *p1 = 0, *p2 = 0;
unsigned int len1 = 0, len2 = 0;
status = FSOUND_Sample_Lock (
fmd->fmod_sample,
0,
hw->samples << hw->shift,
&p1,
&p2,
&len1,
&len2
);
if (!status) {
dolog ("Failed to lock sample\nReason: %s\n", errstr ());
return;
}
if ((len1 & hw->align) || (len2 & hw->align)) {
dolog ("Locking sample returned unaligned length %d, %d\n",
len1, len2);
goto fail;
}
if (len1 + len2 != hw->samples << hw->shift) {
dolog ("Locking sample returned incomplete length %d, %d\n",
len1 + len2, hw->samples << hw->shift);
goto fail;
}
pcm_hw_clear (hw, p1, hw->samples);
fail:
status = FSOUND_Sample_Unlock (fmd->fmod_sample, p1, p2, len1, len2);
if (!status) {
dolog ("Failed to unlock sample\nReason: %s\n", errstr ());
}
}
static int fmod_write_sample (HWVoice *hw, uint8_t *dst, st_sample_t *src,
int src_size, int src_pos, int dst_len)
{
int src_len1 = dst_len, src_len2 = 0, pos = src_pos + dst_len;
st_sample_t *src1 = src + src_pos, *src2 = 0;
if (src_pos + dst_len > src_size) {
src_len1 = src_size - src_pos;
src2 = src;
src_len2 = dst_len - src_len1;
pos = src_len2;
}
if (src_len1) {
hw->clip (dst, src1, src_len1);
memset (src1, 0, src_len1 * sizeof (st_sample_t));
advance (dst, src_len1);
}
if (src_len2) {
hw->clip (dst, src2, src_len2);
memset (src2, 0, src_len2 * sizeof (st_sample_t));
}
return pos;
}
static int fmod_unlock_sample (FMODVoice *fmd, void *p1, void *p2,
unsigned int blen1, unsigned int blen2)
{
int status = FSOUND_Sample_Unlock (fmd->fmod_sample, p1, p2, blen1, blen2);
if (!status) {
dolog ("Failed to unlock sample\nReason: %s\n", errstr ());
return -1;
}
return 0;
}
static int fmod_lock_sample (FMODVoice *fmd, int pos, int len,
void **p1, void **p2,
unsigned int *blen1, unsigned int *blen2)
{
HWVoice *hw = &fmd->hw;
int status;
status = FSOUND_Sample_Lock (
fmd->fmod_sample,
pos << hw->shift,
len << hw->shift,
p1,
p2,
blen1,
blen2
);
if (!status) {
dolog ("Failed to lock sample\nReason: %s\n", errstr ());
return -1;
}
if ((*blen1 & hw->align) || (*blen2 & hw->align)) {
dolog ("Locking sample returned unaligned length %d, %d\n",
*blen1, *blen2);
fmod_unlock_sample (fmd, *p1, *p2, *blen1, *blen2);
return -1;
}
return 0;
}
static void fmod_hw_run (HWVoice *hw)
{
FMODVoice *fmd = (FMODVoice *) hw;
int rpos, live, decr;
void *p1 = 0, *p2 = 0;
unsigned int blen1 = 0, blen2 = 0;
unsigned int len1 = 0, len2 = 0;
int nb_active;
live = pcm_hw_get_live2 (hw, &nb_active);
if (live <= 0) {
return;
}
if (!hw->pending_disable
&& nb_active
&& conf.threshold
&& live <= conf.threshold) {
ldebug ("live=%d nb_active=%d\n", live, nb_active);
return;
}
decr = live;
#if 1
if (fmd->channel >= 0) {
int pos2 = (fmd->old_pos + decr) % hw->samples;
int pos = FSOUND_GetCurrentPosition (fmd->channel);
if (fmd->old_pos < pos && pos2 >= pos) {
decr = pos - fmd->old_pos - (pos2 == pos) - 1;
}
else if (fmd->old_pos > pos && pos2 >= pos && pos2 < fmd->old_pos) {
decr = (hw->samples - fmd->old_pos) + pos - (pos2 == pos) - 1;
}
/* ldebug ("pos=%d pos2=%d old=%d live=%d decr=%d\n", */
/* pos, pos2, fmd->old_pos, live, decr); */
}
#endif
if (decr <= 0) {
return;
}
if (fmod_lock_sample (fmd, fmd->old_pos, decr, &p1, &p2, &blen1, &blen2)) {
return;
}
len1 = blen1 >> hw->shift;
len2 = blen2 >> hw->shift;
ldebug ("%p %p %d %d %d %d\n", p1, p2, len1, len2, blen1, blen2);
decr = len1 + len2;
rpos = hw->rpos;
if (len1) {
rpos = fmod_write_sample (hw, p1, hw->mix_buf, hw->samples, rpos, len1);
}
if (len2) {
rpos = fmod_write_sample (hw, p2, hw->mix_buf, hw->samples, rpos, len2);
}
fmod_unlock_sample (fmd, p1, p2, blen1, blen2);
pcm_hw_dec_live (hw, decr);
hw->rpos = rpos % hw->samples;
fmd->old_pos = (fmd->old_pos + decr) % hw->samples;
}
static int AUD_to_fmodfmt (audfmt_e fmt, int stereo)
{
int mode = FSOUND_LOOP_NORMAL;
switch (fmt) {
case AUD_FMT_S8:
mode |= FSOUND_SIGNED | FSOUND_8BITS;
break;
case AUD_FMT_U8:
mode |= FSOUND_UNSIGNED | FSOUND_8BITS;
break;
case AUD_FMT_S16:
mode |= FSOUND_SIGNED | FSOUND_16BITS;
break;
case AUD_FMT_U16:
mode |= FSOUND_UNSIGNED | FSOUND_16BITS;
break;
default:
dolog ("Internal logic error: Bad audio format %d\nAborting\n", fmt);
exit (EXIT_FAILURE);
}
mode |= stereo ? FSOUND_STEREO : FSOUND_MONO;
return mode;
}
static void fmod_hw_fini (HWVoice *hw)
{
FMODVoice *fmd = (FMODVoice *) hw;
if (fmd->fmod_sample) {
FSOUND_Sample_Free (fmd->fmod_sample);
fmd->fmod_sample = 0;
if (fmd->channel >= 0) {
FSOUND_StopSound (fmd->channel);
}
}
}
static int fmod_hw_init (HWVoice *hw, int freq, int nchannels, audfmt_e fmt)
{
int bits16, mode, channel;
FMODVoice *fmd = (FMODVoice *) hw;
mode = AUD_to_fmodfmt (fmt, nchannels == 2 ? 1 : 0);
fmd->fmod_sample = FSOUND_Sample_Alloc (
FSOUND_FREE, /* index */
conf.nb_samples, /* length */
mode, /* mode */
freq, /* freq */
255, /* volume */
128, /* pan */
255 /* priority */
);
if (!fmd->fmod_sample) {
dolog ("Failed to allocate FMOD sample\nReason: %s\n", errstr ());
return -1;
}
channel = FSOUND_PlaySoundEx (FSOUND_FREE, fmd->fmod_sample, 0, 1);
if (channel < 0) {
dolog ("Failed to start playing sound\nReason: %s\n", errstr ());
FSOUND_Sample_Free (fmd->fmod_sample);
return -1;
}
fmd->channel = channel;
hw->freq = freq;
hw->fmt = fmt;
hw->nchannels = nchannels;
bits16 = fmt == AUD_FMT_U16 || fmt == AUD_FMT_S16;
hw->bufsize = conf.nb_samples << (nchannels == 2) << bits16;
return 0;
}
static int fmod_hw_ctl (HWVoice *hw, int cmd, ...)
{
int status;
FMODVoice *fmd = (FMODVoice *) hw;
switch (cmd) {
case VOICE_ENABLE:
fmod_clear_sample (fmd);
status = FSOUND_SetPaused (fmd->channel, 0);
if (!status) {
dolog ("Failed to resume channel %d\nReason: %s\n",
fmd->channel, errstr ());
}
break;
case VOICE_DISABLE:
status = FSOUND_SetPaused (fmd->channel, 1);
if (!status) {
dolog ("Failed to pause channel %d\nReason: %s\n",
fmd->channel, errstr ());
}
break;
}
return 0;
}
static struct {
const char *name;
int type;
} drvtab[] = {
{"none", FSOUND_OUTPUT_NOSOUND},
#ifdef _WIN32
{"winmm", FSOUND_OUTPUT_WINMM},
{"dsound", FSOUND_OUTPUT_DSOUND},
{"a3d", FSOUND_OUTPUT_A3D},
{"asio", FSOUND_OUTPUT_ASIO},
#endif
#ifdef __linux__
{"oss", FSOUND_OUTPUT_OSS},
{"alsa", FSOUND_OUTPUT_ALSA},
{"esd", FSOUND_OUTPUT_ESD},
#endif
#ifdef __APPLE__
{"mac", FSOUND_OUTPUT_MAC},
#endif
#if 0
{"xbox", FSOUND_OUTPUT_XBOX},
{"ps2", FSOUND_OUTPUT_PS2},
{"gcube", FSOUND_OUTPUT_GC},
#endif
{"nort", FSOUND_OUTPUT_NOSOUND_NONREALTIME}
};
static void *fmod_audio_init (void)
{
int i;
double ver;
int status;
int output_type = -1;
const char *drv = audio_get_conf_str (QC_FMOD_DRV, NULL);
ver = FSOUND_GetVersion ();
if (ver < FMOD_VERSION) {
dolog ("Wrong FMOD version %f, need at least %f\n", ver, FMOD_VERSION);
return NULL;
}
if (drv) {
int found = 0;
for (i = 0; i < sizeof (drvtab) / sizeof (drvtab[0]); i++) {
if (!strcmp (drv, drvtab[i].name)) {
output_type = drvtab[i].type;
found = 1;
break;
}
}
if (!found) {
dolog ("Unknown FMOD output driver `%s'\n", drv);
}
}
if (output_type != -1) {
status = FSOUND_SetOutput (output_type);
if (!status) {
dolog ("FSOUND_SetOutput(%d) failed\nReason: %s\n",
output_type, errstr ());
return NULL;
}
}
conf.freq = audio_get_conf_int (QC_FMOD_FREQ, conf.freq);
conf.nb_samples = audio_get_conf_int (QC_FMOD_SAMPLES, conf.nb_samples);
conf.nb_channels =
audio_get_conf_int (QC_FMOD_CHANNELS,
(audio_state.nb_hw_voices > 1
? audio_state.nb_hw_voices
: conf.nb_channels));
conf.bufsize = audio_get_conf_int (QC_FMOD_BUFSIZE, conf.bufsize);
conf.threshold = audio_get_conf_int (QC_FMOD_THRESHOLD, conf.threshold);
if (conf.bufsize) {
status = FSOUND_SetBufferSize (conf.bufsize);
if (!status) {
dolog ("FSOUND_SetBufferSize (%d) failed\nReason: %s\n",
conf.bufsize, errstr ());
}
}
status = FSOUND_Init (conf.freq, conf.nb_channels, 0);
if (!status) {
dolog ("FSOUND_Init failed\nReason: %s\n", errstr ());
return NULL;
}
return &conf;
}
static void fmod_audio_fini (void *opaque)
{
FSOUND_Close ();
}
struct pcm_ops fmod_pcm_ops = {
fmod_hw_init,
fmod_hw_fini,
fmod_hw_run,
fmod_hw_write,
fmod_hw_ctl
};
struct audio_output_driver fmod_output_driver = {
"fmod",
fmod_audio_init,
fmod_audio_fini,
&fmod_pcm_ops,
1,
INT_MAX,
sizeof (FMODVoice)
};