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add support for 32bit integer samples

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git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@2037 fefdeb5f-60dc-0310-8127-8f9354f1896f
This commit is contained in:
Lennart Poettering 2007-11-09 02:45:07 +00:00
parent 3c17c7d442
commit 7e0f547f2f
12 changed files with 319 additions and 17 deletions
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61
src/pulsecore/sample-util.c
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@ -100,6 +100,8 @@ void pa_silence_memory(void *p, size_t length, const pa_sample_spec *spec) {
break;
case PA_SAMPLE_S16LE:
case PA_SAMPLE_S16BE:
case PA_SAMPLE_S32LE:
case PA_SAMPLE_S32BE:
case PA_SAMPLE_FLOAT32:
case PA_SAMPLE_FLOAT32RE:
c = 0;
@ -380,10 +382,10 @@ void pa_volume_memchunk(
t = (int32_t)(*d);
t = (t * linear[channel]) / 0x10000;
t = CLAMP(t, -0x8000, 0x7FFF);
t = PA_CLAMP_UNLIKELY(t, -0x8000, 0x7FFF);
*d = (int16_t) t;
if (++channel >= spec->channels)
if (PA_UNLIKELY(++channel >= spec->channels))
channel = 0;
}
break;
@ -403,10 +405,57 @@ void pa_volume_memchunk(
t = (int32_t)(PA_INT16_SWAP(*d));
t = (t * linear[channel]) / 0x10000;
t = CLAMP(t, -0x8000, 0x7FFF);
t = PA_CLAMP_UNLIKELY(t, -0x8000, 0x7FFF);
*d = PA_INT16_SWAP((int16_t) t);
if (++channel >= spec->channels)
if (PA_UNLIKELY(++channel >= spec->channels))
channel = 0;
}
break;
}
case PA_SAMPLE_S32NE: {
int32_t *d;
size_t n;
unsigned channel;
int32_t linear[PA_CHANNELS_MAX];
for (channel = 0; channel < spec->channels; channel++)
linear[channel] = (int32_t) (pa_sw_volume_to_linear(volume->values[channel]) * 0x10000);
for (channel = 0, d = (int32_t*) ((uint8_t*) ptr + c->index), n = c->length/sizeof(int32_t); n > 0; d++, n--) {
int64_t t;
t = (int64_t)(*d);
t = (t * linear[channel]) / 0x10000;
t = PA_CLAMP_UNLIKELY(t, -0x80000000LL, 0x7FFFFFFFLL);
*d = (int32_t) t;
if (PA_UNLIKELY(++channel >= spec->channels))
channel = 0;
}
break;
}
case PA_SAMPLE_S32RE: {
int32_t *d;
size_t n;
unsigned channel;
int32_t linear[PA_CHANNELS_MAX];
for (channel = 0; channel < spec->channels; channel++)
linear[channel] = (int32_t) (pa_sw_volume_to_linear(volume->values[channel]) * 0x10000);
for (channel = 0, d = (int32_t*) ((uint8_t*) ptr + c->index), n = c->length/sizeof(int32_t); n > 0; d++, n--) {
int64_t t;
t = (int64_t)(PA_INT32_SWAP(*d));
t = (t * linear[channel]) / 0x10000;
t = PA_CLAMP_UNLIKELY(t, -0x80000000LL, 0x7FFFFFFFLL);
*d = PA_INT32_SWAP((int32_t) t);
if (PA_UNLIKELY(++channel >= spec->channels))
channel = 0;
}
@ -427,10 +476,10 @@ void pa_volume_memchunk(
t = (int32_t) *d - 0x80;
t = (t * linear[channel]) / 0x10000;
t = CLAMP(t, -0x80, 0x7F);
t = PA_CLAMP_UNLIKELY(t, -0x80, 0x7F);
*d = (uint8_t) (t + 0x80);
if (++channel >= spec->channels)
if (PA_UNLIKELY(++channel >= spec->channels))
channel = 0;
}
break;