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Differential D56041 Diff 174225 sys/dev/sound/pcm/feeder_rate.c

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sys/dev/sound/pcm/feeder_rate.c

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#ifdef _KERNEL #ifdef _KERNEL
#define Z_POLYPHASE_MAX 183040 /* 286 taps, 640 phases */ #define Z_POLYPHASE_MAX 183040 /* 286 taps, 640 phases */
#else #else
#define Z_POLYPHASE_MAX 1464320 /* 286 taps, 5120 phases */ #define Z_POLYPHASE_MAX 1464320 /* 286 taps, 5120 phases */
#endif #endif
#define Z_RATE_DEFAULT 48000 #define Z_RATE_DEFAULT 48000
#define Z_RATE_MIN FEEDRATE_RATEMIN
#define Z_RATE_MAX FEEDRATE_RATEMAX
#define Z_ROUNDHZ FEEDRATE_ROUNDHZ
#define Z_ROUNDHZ_MIN FEEDRATE_ROUNDHZ_MIN
#define Z_ROUNDHZ_MAX FEEDRATE_ROUNDHZ_MAX
#define Z_RATE_SRC FEEDRATE_SRC
#define Z_RATE_DST FEEDRATE_DST
#define Z_RATE_QUALITY FEEDRATE_QUALITY
#define Z_RATE_CHANNELS FEEDRATE_CHANNELS
#define Z_PARANOID 1 #define Z_PARANOID 1
#ifdef _KERNEL #ifdef _KERNEL
#undef Z_USE_ALPHADRIFT #undef Z_USE_ALPHADRIFT
#define Z_USE_ALPHADRIFT 1 #define Z_USE_ALPHADRIFT 1
#endif #endif
#define Z_FACTOR_MIN 1 #define Z_FACTOR_MIN 1
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#ifdef Z_DIAGNOSTIC #ifdef Z_DIAGNOSTIC
uint32_t z_cycle; /* output cycle, purely for statistical */ uint32_t z_cycle; /* output cycle, purely for statistical */
#endif #endif
int32_t z_maxfeed; /* maximum feed to avoid 32bit overflow */ int32_t z_maxfeed; /* maximum feed to avoid 32bit overflow */
z_resampler_t z_resample; z_resampler_t z_resample;
}; };
int feeder_rate_min = Z_RATE_MIN; int feeder_rate_min = FEEDRATE_RATEMIN;
int feeder_rate_max = Z_RATE_MAX; int feeder_rate_max = FEEDRATE_RATEMAX;
int feeder_rate_round = Z_ROUNDHZ; int feeder_rate_round = FEEDRATE_ROUNDHZ;
int feeder_rate_quality = Z_QUALITY_DEFAULT; int feeder_rate_quality = Z_QUALITY_DEFAULT;
static int feeder_rate_polyphase_max = Z_POLYPHASE_MAX; static int feeder_rate_polyphase_max = Z_POLYPHASE_MAX;
#ifdef _KERNEL #ifdef _KERNEL
static char feeder_rate_presets[] = FEEDER_RATE_PRESETS; static char feeder_rate_presets[] = FEEDER_RATE_PRESETS;
SYSCTL_STRING(_hw_snd, OID_AUTO, feeder_rate_presets, CTLFLAG_RD, SYSCTL_STRING(_hw_snd, OID_AUTO, feeder_rate_presets, CTLFLAG_RD,
&feeder_rate_presets, 0, "compile-time rate presets"); &feeder_rate_presets, 0, "compile-time rate presets");
▲ Show 20 Lines • Show All 52 Lines • ▼ Show 20 Linessysctl_hw_snd_feeder_rate_round(SYSCTL_HANDLER_ARGS)
int err, val; int err, val;
val = feeder_rate_round; val = feeder_rate_round;
err = sysctl_handle_int(oidp, &val, 0, req); err = sysctl_handle_int(oidp, &val, 0, req);
if (err != 0 || req->newptr == NULL || val == feeder_rate_round) if (err != 0 || req->newptr == NULL || val == feeder_rate_round)
return (err); return (err);
if (val < Z_ROUNDHZ_MIN || val > Z_ROUNDHZ_MAX) if (val < FEEDRATE_ROUNDHZ_MIN || val > FEEDRATE_ROUNDHZ_MAX)
return (EINVAL); return (EINVAL);
feeder_rate_round = val - (val % Z_ROUNDHZ); feeder_rate_round = val - (val % FEEDRATE_ROUNDHZ);
return (0); return (0);
} }
SYSCTL_PROC(_hw_snd, OID_AUTO, feeder_rate_round, SYSCTL_PROC(_hw_snd, OID_AUTO, feeder_rate_round,
CTLTYPE_INT | CTLFLAG_RWTUN | CTLFLAG_MPSAFE, 0, sizeof(int), CTLTYPE_INT | CTLFLAG_RWTUN | CTLFLAG_MPSAFE, 0, sizeof(int),
sysctl_hw_snd_feeder_rate_round, "I", sysctl_hw_snd_feeder_rate_round, "I",
"sample rate converter rounding threshold"); "sample rate converter rounding threshold");
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z_resampler_set(struct pcm_feeder *f, int what, int32_t value) z_resampler_set(struct pcm_feeder *f, int what, int32_t value)
{ {
struct z_info *info; struct z_info *info;
int32_t oquality; int32_t oquality;
info = f->data; info = f->data;
switch (what) { switch (what) {
case Z_RATE_SRC: case FEEDRATE_SRC:
if (value < feeder_rate_min || value > feeder_rate_max) if (value < feeder_rate_min || value > feeder_rate_max)
return (E2BIG); return (E2BIG);
if (value == info->rsrc) if (value == info->rsrc)
return (0); return (0);
info->rsrc = value; info->rsrc = value;
break; break;
case Z_RATE_DST: case FEEDRATE_DST:
if (value < feeder_rate_min || value > feeder_rate_max) if (value < feeder_rate_min || value > feeder_rate_max)
return (E2BIG); return (E2BIG);
if (value == info->rdst) if (value == info->rdst)
return (0); return (0);
info->rdst = value; info->rdst = value;
break; break;
case Z_RATE_QUALITY: case FEEDRATE_QUALITY:
if (value < Z_QUALITY_MIN || value > Z_QUALITY_MAX) if (value < Z_QUALITY_MIN || value > Z_QUALITY_MAX)
return (EINVAL); return (EINVAL);
if (value == info->quality) if (value == info->quality)
return (0); return (0);
/* /*
* If we failed to set the requested quality, restore * If we failed to set the requested quality, restore
* the old one. We cannot afford leaving it broken since * the old one. We cannot afford leaving it broken since
* passive feeder chains like vchans never reinitialize * passive feeder chains like vchans never reinitialize
* itself. * itself.
*/ */
oquality = info->quality; oquality = info->quality;
info->quality = value; info->quality = value;
if (z_resampler_setup(f) == 0) if (z_resampler_setup(f) == 0)
return (0); return (0);
info->quality = oquality; info->quality = oquality;
break; break;
case Z_RATE_CHANNELS: case FEEDRATE_CHANNELS:
if (value < SND_CHN_MIN || value > SND_CHN_MAX) if (value < SND_CHN_MIN || value > SND_CHN_MAX)
return (EINVAL); return (EINVAL);
if (value == info->channels) if (value == info->channels)
return (0); return (0);
info->channels = value; info->channels = value;
break; break;
default: default:
return (EINVAL); return (EINVAL);
} }
return (z_resampler_setup(f)); return (z_resampler_setup(f));
} }
static int static int
z_resampler_get(struct pcm_feeder *f, int what) z_resampler_get(struct pcm_feeder *f, int what)
{ {
struct z_info *info; struct z_info *info;
info = f->data; info = f->data;
switch (what) { switch (what) {
case Z_RATE_SRC: case FEEDRATE_SRC:
return (info->rsrc); return (info->rsrc);
case Z_RATE_DST: case FEEDRATE_DST:
return (info->rdst); return (info->rdst);
case Z_RATE_QUALITY: case FEEDRATE_QUALITY:
return (info->quality); return (info->quality);
case Z_RATE_CHANNELS: case FEEDRATE_CHANNELS:
return (info->channels); return (info->channels);
} }
return (-1); return (-1);
} }
static int static int
z_resampler_init(struct pcm_feeder *f) z_resampler_init(struct pcm_feeder *f)
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