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optimize mixing code a bit. Add mixers for S32LE, S32BE, ULAW, ALAW and FLOAT32BE. Add volume adjusters for FLOAT32BE, ALAW, ULAW.

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git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@2041 fefdeb5f-60dc-0310-8127-8f9354f1896f
This commit is contained in:
Lennart Poettering 2007-11-09 17:11:45 +00:00
parent c1985c2acc
commit b0a68fd09f
4 changed files with 734 additions and 120 deletions
Download patch file Download diff file Expand all files Collapse all files

8
src/Makefile.am
View file

@ -239,7 +239,8 @@ noinst_PROGRAMS = \
rtpoll-test \
sig2str-test \
resampler-test \
smoother-test
smoother-test \
mix-test
if HAVE_SIGXCPU
noinst_PROGRAMS += \
@ -389,6 +390,11 @@ resampler_test_LDADD = $(AM_LDADD) libpulsecore.la
resampler_test_CFLAGS = $(AM_CFLAGS) $(LIBOIL_CFLAGS)
resampler_test_LDFLAGS = $(AM_LDFLAGS) $(BINLDFLAGS) $(LIBOIL_LIBS)
mix_test_SOURCES = tests/mix-test.c
mix_test_LDADD = $(AM_LDADD) libpulsecore.la
mix_test_CFLAGS = $(AM_CFLAGS) $(LIBOIL_CFLAGS)
mix_test_LDFLAGS = $(AM_LDFLAGS) $(BINLDFLAGS) $(LIBOIL_LIBS)
smoother_test_SOURCES = tests/smoother-test.c
smoother_test_LDADD = $(AM_LDADD) libpulsecore.la
smoother_test_CFLAGS = $(AM_CFLAGS)

574
src/pulsecore/sample-util.c
View file

@ -35,6 +35,7 @@
#include <pulsecore/log.h>
#include <pulsecore/macro.h>
#include <pulsecore/g711.h>
#include "sample-util.h"
#include "endianmacros.h"
@ -119,6 +120,58 @@ void pa_silence_memory(void *p, size_t length, const pa_sample_spec *spec) {
memset(p, c, length);
}
static void calc_linear_integer_stream_volumes(pa_mix_info streams[], unsigned nstreams, const pa_sample_spec *spec) {
unsigned k;
pa_assert(streams);
pa_assert(spec);
for (k = 0; k < nstreams; k++) {
unsigned channel;
for (channel = 0; channel < spec->channels; channel++) {
pa_mix_info *m = streams + k;
m->linear[channel].i = (int32_t) (pa_sw_volume_to_linear(m->volume.values[channel]) * 0x10000);
}
}
}
static void calc_linear_integer_volume(int32_t linear[], const pa_cvolume *volume) {
unsigned channel;
pa_assert(linear);
pa_assert(volume);
for (channel = 0; channel < volume->channels; channel++)
linear[channel] = (int32_t) (pa_sw_volume_to_linear(volume->values[channel]) * 0x10000);
}
static void calc_linear_float_stream_volumes(pa_mix_info streams[], unsigned nstreams, const pa_sample_spec *spec) {
unsigned k;
pa_assert(streams);
pa_assert(spec);
for (k = 0; k < nstreams; k++) {
unsigned channel;
for (channel = 0; channel < spec->channels; channel++) {
pa_mix_info *m = streams + k;
m->linear[channel].f = pa_sw_volume_to_linear(m->volume.values[channel]);
}
}
}
static void calc_linear_float_volume(float linear[], const pa_cvolume *volume) {
unsigned channel;
pa_assert(linear);
pa_assert(volume);
for (channel = 0; channel < volume->channels; channel++)
linear[channel] = pa_sw_volume_to_linear(volume->values[channel]);
}
size_t pa_mix(
pa_mix_info streams[],
unsigned nstreams,
@ -126,11 +179,11 @@ size_t pa_mix(
size_t length,
const pa_sample_spec *spec,
const pa_cvolume *volume,
int mute) {
pa_bool_t mute) {
pa_cvolume full_volume;
size_t d = 0;
unsigned k;
size_t d = 0;
pa_assert(streams);
pa_assert(data);
@ -141,50 +194,49 @@ size_t pa_mix(
volume = pa_cvolume_reset(&full_volume, spec->channels);
for (k = 0; k < nstreams; k++)
streams[k].internal = pa_memblock_acquire(streams[k].chunk.memblock);
streams[k].ptr = (uint8_t*) pa_memblock_acquire(streams[k].chunk.memblock) + streams[k].chunk.index;
switch (spec->format) {
case PA_SAMPLE_S16NE:{
unsigned channel = 0;
int32_t linear[PA_CHANNELS_MAX];
calc_linear_integer_stream_volumes(streams, nstreams, spec);
calc_linear_integer_volume(linear, volume);
for (d = 0;; d += sizeof(int16_t)) {
int32_t sum = 0;
unsigned i;
if (d >= length)
if (PA_UNLIKELY(d >= length))
goto finish;
if (!mute && volume->values[channel] != PA_VOLUME_MUTED) {
unsigned i;
for (i = 0; i < nstreams; i++) {
pa_mix_info *m = streams + i;
int32_t v, cv = m->linear[channel].i;
for (i = 0; i < nstreams; i++) {
int32_t v;
pa_volume_t cvolume = streams[i].volume.values[channel];
if (PA_UNLIKELY(d >= m->chunk.length))
goto finish;
if (d >= streams[i].chunk.length)
goto finish;
if (cvolume == PA_VOLUME_MUTED)
v = 0;
else {
v = *((int16_t*) ((uint8_t*) streams[i].internal + streams[i].chunk.index + d));
if (cvolume != PA_VOLUME_NORM)
v = (int32_t) (v * pa_sw_volume_to_linear(cvolume));
}
sum += v;
if (PA_UNLIKELY(cv <= 0) || PA_UNLIKELY(!!mute) || PA_UNLIKELY(linear[channel] <= 0))
v = 0;
else {
v = *((int16_t*) m->ptr);
v = (v * cv) / 0x10000;
}
if (volume->values[channel] != PA_VOLUME_NORM)
sum = (int32_t) (sum * pa_sw_volume_to_linear(volume->values[channel]));
sum = PA_CLAMP_UNLIKELY(sum, -0x8000, 0x7FFF);
sum += v;
m->ptr = (uint8_t*) m->ptr + sizeof(int16_t);
}
sum = PA_CLAMP_UNLIKELY(sum, -0x8000, 0x7FFF);
sum = (sum * linear[channel]) / 0x10000;
*((int16_t*) data) = (int16_t) sum;
data = (uint8_t*) data + sizeof(int16_t);
if (++channel >= spec->channels)
if (PA_UNLIKELY(++channel >= spec->channels))
channel = 0;
}
@ -193,45 +245,135 @@ size_t pa_mix(
case PA_SAMPLE_S16RE:{
unsigned channel = 0;
int32_t linear[PA_CHANNELS_MAX];
calc_linear_integer_stream_volumes(streams, nstreams, spec);
calc_linear_integer_volume(linear, volume);
for (d = 0;; d += sizeof(int16_t)) {
int32_t sum = 0;
unsigned i;
if (d >= length)
if (PA_UNLIKELY(d >= length))
goto finish;
if (!mute && volume->values[channel] != PA_VOLUME_MUTED) {
unsigned i;
for (i = 0; i < nstreams; i++) {
pa_mix_info *m = streams + i;
int32_t v, cv = m->linear[channel].i;
for (i = 0; i < nstreams; i++) {
int32_t v;
pa_volume_t cvolume = streams[i].volume.values[channel];
if (PA_UNLIKELY(d >= m->chunk.length))
goto finish;
if (d >= streams[i].chunk.length)
goto finish;
if (cvolume == PA_VOLUME_MUTED)
v = 0;
else {
v = PA_INT16_SWAP(*((int16_t*) ((uint8_t*) streams[i].internal + streams[i].chunk.index + d)));
if (cvolume != PA_VOLUME_NORM)
v = (int32_t) (v * pa_sw_volume_to_linear(cvolume));
}
sum += v;
if (PA_UNLIKELY(cv <= 0) || PA_UNLIKELY(!!mute) || PA_UNLIKELY(linear[channel] <= 0))
v = 0;
else {
v = PA_INT16_SWAP(*((int16_t*) m->ptr));
v = (v * cv) / 0x10000;
}
if (volume->values[channel] != PA_VOLUME_NORM)
sum = (int32_t) (sum * pa_sw_volume_to_linear(volume->values[channel]));
sum = PA_CLAMP_UNLIKELY(sum, -0x8000, 0x7FFF);
sum += v;
m->ptr = (uint8_t*) m->ptr + sizeof(int16_t);
}
sum = PA_CLAMP_UNLIKELY(sum, -0x8000, 0x7FFF);
sum = (sum * linear[channel]) / 0x10000;
*((int16_t*) data) = PA_INT16_SWAP((int16_t) sum);
data = (uint8_t*) data + sizeof(int16_t);
if (++channel >= spec->channels)
if (PA_UNLIKELY(++channel >= spec->channels))
channel = 0;
}
break;
}
case PA_SAMPLE_S32NE:{
unsigned channel = 0;
int32_t linear[PA_CHANNELS_MAX];
calc_linear_integer_stream_volumes(streams, nstreams, spec);
calc_linear_integer_volume(linear, volume);
for (d = 0;; d += sizeof(int32_t)) {
int64_t sum = 0;
unsigned i;
if (PA_UNLIKELY(d >= length))
goto finish;
for (i = 0; i < nstreams; i++) {
pa_mix_info *m = streams + i;
int64_t v;
int32_t cv = m->linear[channel].i;
if (PA_UNLIKELY(d >= m->chunk.length))
goto finish;
if (PA_UNLIKELY(cv <= 0) || PA_UNLIKELY(!!mute) || PA_UNLIKELY(linear[channel] <= 0))
v = 0;
else {
v = *((int32_t*) m->ptr);
v = (v * cv) / 0x10000;
}
sum += v;
m->ptr = (uint8_t*) m->ptr + sizeof(int32_t);
}
sum = PA_CLAMP_UNLIKELY(sum, -0x80000000LL, 0x7FFFFFFFLL);
sum = (sum * linear[channel]) / 0x10000;
*((int32_t*) data) = (int32_t) sum;
data = (uint8_t*) data + sizeof(int32_t);
if (PA_UNLIKELY(++channel >= spec->channels))
channel = 0;
}
break;
}
case PA_SAMPLE_S32RE:{
unsigned channel = 0;
int32_t linear[PA_CHANNELS_MAX];
calc_linear_integer_stream_volumes(streams, nstreams, spec);
calc_linear_integer_volume(linear, volume);
for (d = 0;; d += sizeof(int32_t)) {
int64_t sum = 0;
unsigned i;
if (PA_UNLIKELY(d >= length))
goto finish;
for (i = 0; i < nstreams; i++) {
pa_mix_info *m = streams + i;
int64_t v;
int32_t cv = m->linear[channel].i;
if (PA_UNLIKELY(d >= m->chunk.length))
goto finish;
if (PA_UNLIKELY(cv <= 0) || PA_UNLIKELY(!!mute) || PA_UNLIKELY(linear[channel] <= 0))
v = 0;
else {
v = PA_INT32_SWAP(*((int32_t*) m->ptr));
v = (v * cv) / 0x10000;
}
sum += v;
m->ptr = (uint8_t*) m->ptr + sizeof(int32_t);
}
sum = PA_CLAMP_UNLIKELY(sum, -0x80000000LL, 0x7FFFFFFFLL);
sum = (sum * linear[channel]) / 0x10000;
*((int32_t*) data) = PA_INT32_SWAP((int32_t) sum);
data = (uint8_t*) data + sizeof(int32_t);
if (PA_UNLIKELY(++channel >= spec->channels))
channel = 0;
}
@ -240,45 +382,133 @@ size_t pa_mix(
case PA_SAMPLE_U8: {
unsigned channel = 0;
int32_t linear[PA_CHANNELS_MAX];
calc_linear_integer_stream_volumes(streams, nstreams, spec);
calc_linear_integer_volume(linear, volume);
for (d = 0;; d ++) {
int32_t sum = 0;
unsigned i;
if (d >= length)
if (PA_UNLIKELY(d >= length))
goto finish;
if (!mute && volume->values[channel] != PA_VOLUME_MUTED) {
unsigned i;
for (i = 0; i < nstreams; i++) {
pa_mix_info *m = streams + i;
int32_t v, cv = m->linear[channel].i;
for (i = 0; i < nstreams; i++) {
int32_t v;
pa_volume_t cvolume = streams[i].volume.values[channel];
if (PA_UNLIKELY(d >= m->chunk.length))
goto finish;
if (d >= streams[i].chunk.length)
goto finish;
if (cvolume == PA_VOLUME_MUTED)
v = 0;
else {
v = (int32_t) *((uint8_t*) streams[i].internal + streams[i].chunk.index + d) - 0x80;
if (cvolume != PA_VOLUME_NORM)
v = (int32_t) (v * pa_sw_volume_to_linear(cvolume));
}
sum += v;
if (PA_UNLIKELY(cv <= 0) || PA_UNLIKELY(!!mute) || PA_UNLIKELY(linear[channel] <= 0))
v = 0;
else {
v = (int32_t) *((uint8_t*) m->ptr) - 0x80;
v = (v * cv) / 0x10000;
}
if (volume->values[channel] != PA_VOLUME_NORM)
sum = (int32_t) (sum * pa_sw_volume_to_linear(volume->values[channel]));
sum = PA_CLAMP_UNLIKELY(sum, -0x80, 0x7F);
sum += v;
m->ptr = (uint8_t*) m->ptr + 1;
}
sum = (sum * linear[channel]) / 0x10000;
sum = PA_CLAMP_UNLIKELY(sum, -0x80, 0x7F);
*((uint8_t*) data) = (uint8_t) (sum + 0x80);
data = (uint8_t*) data + 1;
if (++channel >= spec->channels)
if (PA_UNLIKELY(++channel >= spec->channels))
channel = 0;
}
break;
}
case PA_SAMPLE_ULAW: {
unsigned channel = 0;
int32_t linear[PA_CHANNELS_MAX];
calc_linear_integer_stream_volumes(streams, nstreams, spec);
calc_linear_integer_volume(linear, volume);
for (d = 0;; d ++) {
int32_t sum = 0;
unsigned i;
if (PA_UNLIKELY(d >= length))
goto finish;
for (i = 0; i < nstreams; i++) {
pa_mix_info *m = streams + i;
int32_t v, cv = m->linear[channel].i;
if (PA_UNLIKELY(d >= m->chunk.length))
goto finish;
if (PA_UNLIKELY(cv <= 0) || PA_UNLIKELY(!!mute) || PA_UNLIKELY(linear[channel] <= 0))
v = 0;
else {
v = (int32_t) st_ulaw2linear16(*((uint8_t*) m->ptr));
v = (v * cv) / 0x10000;
}
sum += v;
m->ptr = (uint8_t*) m->ptr + 1;
}
sum = PA_CLAMP_UNLIKELY(sum, -0x8000, 0x7FFF);
sum = (sum * linear[channel]) / 0x10000;
*((uint8_t*) data) = (uint8_t) st_14linear2ulaw(sum >> 2);
data = (uint8_t*) data + 1;
if (PA_UNLIKELY(++channel >= spec->channels))
channel = 0;
}
break;
}
case PA_SAMPLE_ALAW: {
unsigned channel = 0;
int32_t linear[PA_CHANNELS_MAX];
calc_linear_integer_stream_volumes(streams, nstreams, spec);
calc_linear_integer_volume(linear, volume);
for (d = 0;; d ++) {
int32_t sum = 0;
unsigned i;
if (PA_UNLIKELY(d >= length))
goto finish;
for (i = 0; i < nstreams; i++) {
pa_mix_info *m = streams + i;
int32_t v, cv = m->linear[channel].i;
if (PA_UNLIKELY(d >= m->chunk.length))
goto finish;
if (PA_UNLIKELY(cv <= 0) || PA_UNLIKELY(!!mute) || PA_UNLIKELY(linear[channel] <= 0))
v = 0;
else {
v = (int32_t) st_alaw2linear16(*((uint8_t*) m->ptr));
v = (v * cv) / 0x10000;
}
sum += v;
m->ptr = (uint8_t*) m->ptr + 1;
}
sum = PA_CLAMP_UNLIKELY(sum, -0x8000, 0x7FFF);
sum = (sum * linear[channel]) / 0x10000;
*((uint8_t*) data) = (uint8_t) st_13linear2alaw(sum >> 3);
data = (uint8_t*) data + 1;
if (PA_UNLIKELY(++channel >= spec->channels))
channel = 0;
}
@ -287,43 +517,88 @@ size_t pa_mix(
case PA_SAMPLE_FLOAT32NE: {
unsigned channel = 0;
float linear[PA_CHANNELS_MAX];
calc_linear_float_stream_volumes(streams, nstreams, spec);
calc_linear_float_volume(linear, volume);
for (d = 0;; d += sizeof(float)) {
float sum = 0;
unsigned i;
if (d >= length)
if (PA_UNLIKELY(d >= length))
goto finish;
if (!mute && volume->values[channel] != PA_VOLUME_MUTED) {
unsigned i;
for (i = 0; i < nstreams; i++) {
pa_mix_info *m = streams + i;
float v, cv = m->linear[channel].f;
for (i = 0; i < nstreams; i++) {
float v;
pa_volume_t cvolume = streams[i].volume.values[channel];
if (PA_UNLIKELY(d >= m->chunk.length))
goto finish;
if (d >= streams[i].chunk.length)
goto finish;
if (cvolume == PA_VOLUME_MUTED)
v = 0;
else {
v = *((float*) ((uint8_t*) streams[i].internal + streams[i].chunk.index + d));
if (cvolume != PA_VOLUME_NORM)
v *= pa_sw_volume_to_linear(cvolume);
}
sum += v;
if (PA_UNLIKELY(cv <= 0) || PA_UNLIKELY(!!mute) || PA_UNLIKELY(linear[channel] <= 0))
v = 0;
else {
v = *((float*) m->ptr);
v *= cv;
}
if (volume->values[channel] != PA_VOLUME_NORM)
sum *= pa_sw_volume_to_linear(volume->values[channel]);
sum += v;
m->ptr = (uint8_t*) m->ptr + sizeof(float);
}
sum *= linear[channel];
*((float*) data) = sum;
data = (uint8_t*) data + sizeof(float);
if (++channel >= spec->channels)
if (PA_UNLIKELY(++channel >= spec->channels))
channel = 0;
}
break;
}
case PA_SAMPLE_FLOAT32RE: {
unsigned channel = 0;
float linear[PA_CHANNELS_MAX];
calc_linear_float_stream_volumes(streams, nstreams, spec);
calc_linear_float_volume(linear, volume);
for (d = 0;; d += sizeof(float)) {
float sum = 0;
unsigned i;
if (PA_UNLIKELY(d >= length))
goto finish;
for (i = 0; i < nstreams; i++) {
pa_mix_info *m = streams + i;
float v, cv = m->linear[channel].f;
if (PA_UNLIKELY(d >= m->chunk.length))
goto finish;
if (PA_UNLIKELY(cv <= 0) || PA_UNLIKELY(!!mute) || PA_UNLIKELY(linear[channel] <= 0))
v = 0;
else {
uint32_t z = *(uint32_t*) m->ptr;
z = PA_UINT32_SWAP(z);
v = *((float*) &z);
v *= cv;
}
sum += v;
m->ptr = (uint8_t*) m->ptr + sizeof(float);
}
sum *= linear[channel];
*((uint32_t*) data) = PA_UINT32_SWAP(*(uint32_t*) &sum);
data = (uint8_t*) data + sizeof(float);
if (PA_UNLIKELY(++channel >= spec->channels))
channel = 0;
}
@ -332,7 +607,7 @@ size_t pa_mix(
default:
pa_log_error("ERROR: Unable to mix audio data of format %s.", pa_sample_format_to_string(spec->format));
abort();
pa_assert_not_reached();
}
finish:
@ -364,7 +639,7 @@ void pa_volume_memchunk(
return;
}
ptr = pa_memblock_acquire(c->memblock);
ptr = (uint8_t*) pa_memblock_acquire(c->memblock) + c->index;
switch (spec->format) {
@ -374,10 +649,9 @@ void pa_volume_memchunk(
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);
calc_linear_integer_volume(linear, volume);
for (channel = 0, d = (int16_t*) ((uint8_t*) ptr + c->index), n = c->length/sizeof(int16_t); n > 0; d++, n--) {
for (channel = 0, d = ptr, n = c->length/sizeof(int16_t); n > 0; d++, n--) {
int32_t t;
t = (int32_t)(*d);
@ -397,10 +671,9 @@ void pa_volume_memchunk(
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);
calc_linear_integer_volume(linear, volume);
for (channel = 0, d = (int16_t*) ((uint8_t*) ptr + c->index), n = c->length/sizeof(int16_t); n > 0; d++, n--) {
for (channel = 0, d = ptr, n = c->length/sizeof(int16_t); n > 0; d++, n--) {
int32_t t;
t = (int32_t)(PA_INT16_SWAP(*d));
@ -421,10 +694,9 @@ void pa_volume_memchunk(
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);
calc_linear_integer_volume(linear, volume);
for (channel = 0, d = (int32_t*) ((uint8_t*) ptr + c->index), n = c->length/sizeof(int32_t); n > 0; d++, n--) {
for (channel = 0, d = ptr, n = c->length/sizeof(int32_t); n > 0; d++, n--) {
int64_t t;
t = (int64_t)(*d);
@ -444,10 +716,9 @@ void pa_volume_memchunk(
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);
calc_linear_integer_volume(linear, volume);
for (channel = 0, d = (int32_t*) ((uint8_t*) ptr + c->index), n = c->length/sizeof(int32_t); n > 0; d++, n--) {
for (channel = 0, d = ptr, n = c->length/sizeof(int32_t); n > 0; d++, n--) {
int64_t t;
t = (int64_t)(PA_INT32_SWAP(*d));
@ -468,10 +739,9 @@ void pa_volume_memchunk(
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);
calc_linear_integer_volume(linear, volume);
for (channel = 0, d = (uint8_t*) ptr + c->index, n = c->length; n > 0; d++, n--) {
for (channel = 0, d = ptr, n = c->length; n > 0; d++, n--) {
int32_t t;
t = (int32_t) *d - 0x80;
@ -485,20 +755,64 @@ void pa_volume_memchunk(
break;
}
case PA_SAMPLE_ULAW: {
uint8_t *d;
size_t n;
unsigned channel;
int32_t linear[PA_CHANNELS_MAX];
calc_linear_integer_volume(linear, volume);
for (channel = 0, d = ptr, n = c->length; n > 0; d++, n--) {
int32_t t;
t = (int32_t) st_ulaw2linear16(*d);
t = (t * linear[channel]) / 0x10000;
t = PA_CLAMP_UNLIKELY(t, -0x8000, 0x7FFF);
*d = (uint8_t) st_14linear2ulaw(t >> 2);
if (PA_UNLIKELY(++channel >= spec->channels))
channel = 0;
}
break;
}
case PA_SAMPLE_ALAW: {
uint8_t *d;
size_t n;
unsigned channel;
int32_t linear[PA_CHANNELS_MAX];
calc_linear_integer_volume(linear, volume);
for (channel = 0, d = ptr, n = c->length; n > 0; d++, n--) {
int32_t t;
t = (int32_t) st_alaw2linear16(*d);
t = (t * linear[channel]) / 0x10000;
t = PA_CLAMP_UNLIKELY(t, -0x8000, 0x7FFF);
*d = (uint8_t) st_13linear2alaw(t >> 3);
if (PA_UNLIKELY(++channel >= spec->channels))
channel = 0;
}
break;
}
case PA_SAMPLE_FLOAT32NE: {
float *d;
int skip;
unsigned n;
unsigned channel;
d = (float*) ((uint8_t*) ptr + c->index);
d = ptr;
skip = spec->channels * sizeof(float);
n = c->length/sizeof(float)/spec->channels;
for (channel = 0; channel < spec->channels ; channel ++) {
for (channel = 0; channel < spec->channels; channel ++) {
float v, *t;
if (volume->values[channel] == PA_VOLUME_NORM)
if (PA_UNLIKELY(volume->values[channel] == PA_VOLUME_NORM))
continue;
v = (float) pa_sw_volume_to_linear(volume->values[channel]);
@ -508,6 +822,32 @@ void pa_volume_memchunk(
break;
}
case PA_SAMPLE_FLOAT32RE: {
uint32_t *d;
size_t n;
unsigned channel;
float linear[PA_CHANNELS_MAX];
calc_linear_float_volume(linear, volume);
for (channel = 0, d = ptr, n = c->length/sizeof(float); n > 0; d++, n--) {
float t;
uint32_t z;
z = PA_UINT32_SWAP(*d);
t = *(float*) &z;
t *= linear[channel];
z = *(uint32_t*) &t;
*d = PA_UINT32_SWAP(z);
if (PA_UNLIKELY(++channel >= spec->channels))
channel = 0;
}
break;
}
default:
pa_log_warn(" Unable to change volume of format %s.", pa_sample_format_to_string(spec->format));
/* If we cannot change the volume, we just don't do it */

11
src/pulsecore/sample-util.h
View file

@ -39,7 +39,14 @@ typedef struct pa_mix_info {
pa_memchunk chunk;
pa_cvolume volume;
void *userdata;
void *internal; /* Used internally by pa_mix(), should not be initialised when calling pa_mix() */
/* The following fields are used internally by pa_mix(), should
* not be initialised by the caller of pa_mix(). */
void *ptr;
union {
int32_t i;
float f;
} linear[PA_CHANNELS_MAX];
} pa_mix_info;
size_t pa_mix(
@ -49,7 +56,7 @@ size_t pa_mix(
size_t length,
const pa_sample_spec *spec,
const pa_cvolume *volume,
int mute);
pa_bool_t mute);
void pa_volume_memchunk(
pa_memchunk*c,

261
src/tests/mix-test.c Normal file
View file

@ -0,0 +1,261 @@
/* $Id: resampler-test.c 2037 2007-11-09 02:45:07Z lennart $ */
/***
This file is part of PulseAudio.
PulseAudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
PulseAudio is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with PulseAudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <pulse/sample.h>
#include <pulse/volume.h>
#include <pulsecore/resampler.h>
#include <pulsecore/macro.h>
#include <pulsecore/endianmacros.h>
#include <pulsecore/memblock.h>
#include <pulsecore/sample-util.h>
#include <liboil/liboil.h>
static float swap_float(float a) {
uint32_t *b = (uint32_t*) &a;
*b = PA_UINT32_SWAP(*b);
return a;
}
static void dump_block(const pa_sample_spec *ss, const pa_memchunk *chunk) {
void *d;
unsigned i;
d = pa_memblock_acquire(chunk->memblock);
switch (ss->format) {
case PA_SAMPLE_U8:
case PA_SAMPLE_ULAW:
case PA_SAMPLE_ALAW: {
uint8_t *u = d;
for (i = 0; i < chunk->length / pa_frame_size(ss); i++)
printf("0x%02x ", *(u++));
break;
}
case PA_SAMPLE_S16NE:
case PA_SAMPLE_S16RE: {
uint16_t *u = d;
for (i = 0; i < chunk->length / pa_frame_size(ss); i++)
printf("0x%04x ", *(u++));
break;
}
case PA_SAMPLE_S32NE:
case PA_SAMPLE_S32RE: {
uint32_t *u = d;
for (i = 0; i < chunk->length / pa_frame_size(ss); i++)
printf("0x%08x ", *(u++));
break;
}
case PA_SAMPLE_FLOAT32NE:
case PA_SAMPLE_FLOAT32RE: {
float *u = d;
for (i = 0; i < chunk->length / pa_frame_size(ss); i++) {
printf("%1.5f ", ss->format == PA_SAMPLE_FLOAT32NE ? *u : swap_float(*u));
u++;
}
break;
}
default:
pa_assert_not_reached();
}
printf("\n");
pa_memblock_release(chunk->memblock);
}
static pa_memblock* generate_block(pa_mempool *pool, const pa_sample_spec *ss) {
pa_memblock *r;
void *d;
unsigned i;
pa_assert_se(r = pa_memblock_new(pool, pa_frame_size(ss) * 10));
d = pa_memblock_acquire(r);
switch (ss->format) {
case PA_SAMPLE_U8:
case PA_SAMPLE_ULAW:
case PA_SAMPLE_ALAW: {
uint8_t *u = d;
u[0] = 0x00;
u[1] = 0xFF;
u[2] = 0x7F;
u[3] = 0x80;
u[4] = 0x9f;
u[5] = 0x3f;
u[6] = 0x1;
u[7] = 0xF0;
u[8] = 0x20;
u[9] = 0x21;
break;
}
case PA_SAMPLE_S16NE:
case PA_SAMPLE_S16RE: {
uint16_t *u = d;
u[0] = 0x0000;
u[1] = 0xFFFF;
u[2] = 0x7FFF;
u[3] = 0x8000;
u[4] = 0x9fff;
u[5] = 0x3fff;
u[6] = 0x1;
u[7] = 0xF000;
u[8] = 0x20;
u[9] = 0x21;
break;
}
case PA_SAMPLE_S32NE:
case PA_SAMPLE_S32RE: {
uint32_t *u = d;
u[0] = 0x00000001;
u[1] = 0xFFFF0002;
u[2] = 0x7FFF0003;
u[3] = 0x80000004;
u[4] = 0x9fff0005;
u[5] = 0x3fff0006;
u[6] = 0x10007;
u[7] = 0xF0000008;
u[8] = 0x200009;
u[9] = 0x21000A;
break;
}
case PA_SAMPLE_FLOAT32NE:
case PA_SAMPLE_FLOAT32RE: {
float *u = d;
u[0] = 0.0;
u[1] = -1.0;
u[2] = 1.0;
u[3] = 4711;
u[4] = 0.222;
u[5] = 0.33;
u[6] = -.3;
u[7] = 99;
u[8] = -0.555;
u[9] = -.123;
if (ss->format == PA_SAMPLE_FLOAT32RE)
for (i = 0; i < 10; i++)
u[i] = swap_float(u[i]);
break;
}
default:
pa_assert_not_reached();
}
pa_memblock_release(r);
return r;
}
int main(int argc, char *argv[]) {
pa_mempool *pool;
pa_sample_spec a;
pa_cvolume v;
oil_init();
pa_log_set_maximal_level(PA_LOG_DEBUG);
pa_assert_se(pool = pa_mempool_new(FALSE));
a.channels = 1;
a.rate = 44100;
v.channels = a.channels;
v.values[0] = pa_sw_volume_from_linear(0.9);
for (a.format = 0; a.format < PA_SAMPLE_MAX; a.format ++) {
pa_memchunk i, j, k;
pa_mix_info m[2];
void *ptr;
printf("=== mixing: %s\n", pa_sample_format_to_string(a.format));
/* Generate block */
i.memblock = generate_block(pool, &a);
i.length = pa_memblock_get_length(i.memblock);
i.index = 0;
/* Make a copy */
j = i;
pa_memblock_ref(j.memblock);
pa_memchunk_make_writable(&j, 0);
/* Adjust volume of the copy */
pa_volume_memchunk(&j, &a, &v);
m[0].chunk = i;
m[0].volume.values[0] = PA_VOLUME_NORM;
m[0].volume.channels = a.channels;
m[1].chunk = j;
m[1].volume.values[0] = PA_VOLUME_NORM;
m[1].volume.channels = a.channels;
k.memblock = pa_memblock_new(pool, i.length);
k.length = i.length;
k.index = 0;
ptr = (uint8_t*) pa_memblock_acquire(k.memblock) + k.index;
pa_mix(m, 2, ptr, k.length, &a, NULL, FALSE);
pa_memblock_release(k.memblock);
dump_block(&a, &i);
dump_block(&a, &j);
dump_block(&a, &k);
pa_memblock_unref(i.memblock);
pa_memblock_unref(j.memblock);
pa_memblock_unref(k.memblock);
}
pa_mempool_free(pool);
return 0;
}