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mem: align memory to requested alignment

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Improve the allocators to always align the buffer memory to the
requested alignment
Use aligned read and writes for sse functions and check alignment,
optionally falling back to unaligned path.
Add more tests and benchmark cases
Check and warn for misaligned memory in plugins.
This commit is contained in:
Wim Taymans 2019-01-24 18:28:52 +01:00
parent dd66469570
commit 13bf70a8dd
19 changed files with 736 additions and 516 deletions
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38
src/modules/module-audio-dsp/floatmix.c
View file

@ -109,7 +109,7 @@ struct impl {
uint32_t stride;
bool started;
float empty[MAX_SAMPLES];
float empty[MAX_SAMPLES + 15];
};
#define CHECK_FREE_IN_PORT(this,d,p) ((d) == SPA_DIRECTION_INPUT && (p) < MAX_PORTS && !this->in_ports[(p)].valid)
@ -632,10 +632,12 @@ impl_node_port_use_buffers(struct spa_node *node,
if (!((d[0].type == SPA_DATA_MemPtr ||
d[0].type == SPA_DATA_MemFd ||
d[0].type == SPA_DATA_DmaBuf) && d[0].data != NULL)) {
spa_log_error(this->log, NAME " %p: invalid memory on buffer %p", this,
buffers[i]);
spa_log_error(this->log, NAME " %p: invalid memory on buffer %d", this, i);
return -EINVAL;
}
if (!SPA_IS_ALIGNED(d[0].data, 16)) {
spa_log_warn(this->log, NAME " %p: memory on buffer %d not aligned", this, i);
}
if (direction == SPA_DIRECTION_OUTPUT)
queue_buffer(this, port, b);
}
@ -717,23 +719,27 @@ impl_node_port_send_command(struct spa_node *node,
#include <xmmintrin.h>
static void mix_2(float *dst, float *src1, float *src2, int n_samples)
{
int i, unrolled;
int n, unrolled;
__m128 in[2];
unrolled = n_samples / 4;
n_samples &= 3;
if (SPA_IS_ALIGNED(src1, 16) &&
SPA_IS_ALIGNED(src2, 16) &&
SPA_IS_ALIGNED(dst, 16))
unrolled = n_samples / 4;
else
unrolled = 0;
for (i = 0; unrolled--; i += 4) {
in[0] = _mm_loadu_ps(&src1[i]),
in[1] = _mm_loadu_ps(&src2[i]),
for (n = 0; unrolled--; n += 4) {
in[0] = _mm_load_ps(&src1[n]),
in[1] = _mm_load_ps(&src2[n]),
in[0] = _mm_add_ps(in[0], in[1]);
_mm_storeu_ps(&dst[i], in[0]);
_mm_store_ps(&dst[n], in[0]);
}
for (; n_samples--; i++) {
in[0] = _mm_load_ss(&src1[i]),
in[1] = _mm_load_ss(&src2[i]),
for (; n < n_samples; n++) {
in[0] = _mm_load_ss(&src1[n]),
in[1] = _mm_load_ss(&src2[n]),
in[0] = _mm_add_ss(in[0], in[1]);
_mm_store_ss(&dst[i], in[0]);
_mm_store_ss(&dst[n], in[0]);
}
}
#else
@ -825,13 +831,13 @@ static int impl_node_process(struct spa_node *node)
outb->buffer->n_datas = 1;
outb->buffer->datas = outb->datas;
outb->datas[0].data = this->empty;
outb->datas[0].data = SPA_PTR_ALIGN(this->empty, 16, void);
outb->datas[0].chunk = outb->chunk;
outb->datas[0].chunk->offset = 0;
outb->datas[0].chunk->size = n_samples * sizeof(float);
outb->datas[0].chunk->stride = sizeof(float);
dst = this->empty;
dst = outb->datas[0].data;
if (n_buffers == 0) {
memset(dst, 0, n_samples * sizeof(float));
}