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audiomixer: separate mixer functions

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This commit is contained in:
Wim Taymans 2017-06-27 17:48:34 +02:00
parent c14d727ae5
commit 7fbe811a03
4 changed files with 459 additions and 107 deletions
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252
spa/plugins/audiomixer/audiomixer.c
View file

@ -29,6 +29,8 @@
#include <lib/format.h>
#include <lib/props.h>
#include "conv.h"
#define NAME "audiomixer"
#define MAX_BUFFERS 64
@ -42,11 +44,14 @@ struct buffer {
};
struct port {
bool valid;
struct spa_port_io *io;
bool have_format;
struct spa_port_info info;
bool have_format;
struct buffer buffers[MAX_BUFFERS];
uint32_t n_buffers;
@ -88,27 +93,33 @@ struct impl {
struct spa_type_map *map;
struct spa_log *log;
struct spa_audiomixer_ops ops;
const struct spa_node_callbacks *callbacks;
void *user_data;
int port_count;
int port_queued;
struct port in_ports[MAX_PORTS];
struct port out_ports[1];
bool have_format;
struct spa_audio_info format;
uint8_t format_buffer[4096];
bool have_format;
int n_formats;
struct spa_audio_info format;
mix_func_t copy;
mix_func_t add;
bool started;
};
#define CHECK_PORT_NUM(this,d,p) (((d) == SPA_DIRECTION_INPUT && (p) < MAX_PORTS) || \
((d) == SPA_DIRECTION_OUTPUT && (p) == 0))
#define CHECK_FREE_IN_PORT(this,d,p) ((d) == SPA_DIRECTION_INPUT && (p) < MAX_PORTS && !this->in_ports[(p)].io)
#define CHECK_IN_PORT(this,d,p) ((d) == SPA_DIRECTION_INPUT && (p) < MAX_PORTS && this->in_ports[(p)].io)
#define CHECK_FREE_IN_PORT(this,d,p) ((d) == SPA_DIRECTION_INPUT && (p) < MAX_PORTS && !this->in_ports[(p)].valid)
#define CHECK_IN_PORT(this,d,p) ((d) == SPA_DIRECTION_INPUT && (p) < MAX_PORTS && this->in_ports[(p)].valid)
#define CHECK_OUT_PORT(this,d,p) ((d) == SPA_DIRECTION_OUTPUT && (p) == 0)
#define CHECK_PORT(this,d,p) (CHECK_OUT_PORT(this,d,p) || CHECK_IN_PORT (this,d,p))
#define GET_IN_PORT(this,p) (&this->in_ports[p])
#define GET_OUT_PORT(this,p) (&this->out_ports[p])
#define GET_PORT(this,d,p) (d == SPA_DIRECTION_INPUT ? GET_IN_PORT(this,p) : GET_OUT_PORT(this,p))
#define PROP(f,key,type,...) \
SPA_POD_PROP (f,key,0,type,1,__VA_ARGS__)
@ -176,10 +187,14 @@ impl_node_get_n_ports(struct spa_node *node,
uint32_t *n_output_ports,
uint32_t *max_output_ports)
{
struct impl *this;
spa_return_val_if_fail(node != NULL, SPA_RESULT_INVALID_ARGUMENTS);
this = SPA_CONTAINER_OF(node, struct impl, node);
if (n_input_ports)
*n_input_ports = 0;
*n_input_ports = this->port_count;
if (max_input_ports)
*max_input_ports = MAX_PORTS;
if (n_output_ports)
@ -206,7 +221,7 @@ impl_node_get_port_ids(struct spa_node *node,
if (input_ids) {
for (i = 0, idx = 0; i < MAX_PORTS && idx < n_input_ports; i++) {
if (this->in_ports[i].io)
if (this->in_ports[i].valid)
input_ids[idx++] = i;
}
}
@ -219,6 +234,7 @@ impl_node_get_port_ids(struct spa_node *node,
static int impl_node_add_port(struct spa_node *node, enum spa_direction direction, uint32_t port_id)
{
struct impl *this;
struct port *port;
spa_return_val_if_fail(node != NULL, SPA_RESULT_INVALID_ARGUMENTS);
@ -227,12 +243,16 @@ static int impl_node_add_port(struct spa_node *node, enum spa_direction directio
spa_return_val_if_fail(CHECK_FREE_IN_PORT(this, direction, port_id),
SPA_RESULT_INVALID_PORT);
this->port_count++;
spa_list_init(&this->in_ports[port_id].queue);
port = GET_IN_PORT (this, port_id);
port->valid = true;
spa_list_init(&port->queue);
port->info.flags = SPA_PORT_INFO_FLAG_CAN_USE_BUFFERS |
SPA_PORT_INFO_FLAG_REMOVABLE |
SPA_PORT_INFO_FLAG_OPTIONAL |
SPA_PORT_INFO_FLAG_IN_PLACE;
this->port_count++;
this->in_ports[port_id].info.flags = SPA_PORT_INFO_FLAG_CAN_USE_BUFFERS |
SPA_PORT_INFO_FLAG_REMOVABLE |
SPA_PORT_INFO_FLAG_OPTIONAL | SPA_PORT_INFO_FLAG_IN_PLACE;
return SPA_RESULT_OK;
}
@ -240,7 +260,7 @@ static int
impl_node_remove_port(struct spa_node *node, enum spa_direction direction, uint32_t port_id)
{
struct impl *this;
struct spa_port_io *io;
struct port *port;
spa_return_val_if_fail(node != NULL, SPA_RESULT_INVALID_ARGUMENTS);
@ -248,12 +268,14 @@ impl_node_remove_port(struct spa_node *node, enum spa_direction direction, uint3
spa_return_val_if_fail(CHECK_IN_PORT(this, direction, port_id), SPA_RESULT_INVALID_PORT);
io = this->in_ports[port_id].io;
if (io && io->buffer_id)
this->port_queued--;
port = GET_IN_PORT (this, port_id);
this->in_ports[port_id].io = NULL;
this->port_count--;
if (port->have_format && this->have_format) {
if (--this->n_formats == 0)
this->have_format = false;
}
spa_memzero(port, sizeof(struct port));
return SPA_RESULT_OK;
}
@ -292,8 +314,10 @@ impl_node_port_enum_formats(struct spa_node *node,
spa_pod_builder_format(&b, &f[0], this->type.format,
this->type.media_type.audio,
this->type.media_subtype.raw,
PROP(&f[1], this->type.format_audio.format, SPA_POD_TYPE_ID,
this->type.audio_format.S16),
PROP_U_EN(&f[1], this->type.format_audio.format, SPA_POD_TYPE_ID, 3,
this->type.audio_format.S16,
this->type.audio_format.S16,
this->type.audio_format.F32),
PROP_U_MM(&f[1], this->type.format_audio.rate, SPA_POD_TYPE_INT,
44100,
1, INT32_MAX),
@ -342,11 +366,15 @@ impl_node_port_set_format(struct spa_node *node,
spa_return_val_if_fail(CHECK_PORT(this, direction, port_id), SPA_RESULT_INVALID_PORT);
port = direction == SPA_DIRECTION_INPUT ? &this->in_ports[port_id] : &this->out_ports[0];
port = GET_PORT(this, direction, port_id);
if (format == NULL) {
port->have_format = false;
clear_buffers(this, port);
if (port->have_format) {
port->have_format = false;
if (--this->n_formats == 0)
this->have_format = false;
clear_buffers(this, port);
}
} else {
struct spa_audio_info info = { SPA_FORMAT_MEDIA_TYPE(format),
SPA_FORMAT_MEDIA_SUBTYPE(format),
@ -359,8 +387,26 @@ impl_node_port_set_format(struct spa_node *node,
if (!spa_format_audio_raw_parse(format, &info.info.raw, &this->type.format_audio))
return SPA_RESULT_INVALID_MEDIA_TYPE;
this->format = info;
port->have_format = true;
if (this->have_format) {
if (memcmp(&info, &this->format, sizeof(struct spa_audio_info)))
return SPA_RESULT_INVALID_MEDIA_TYPE;
} else {
this->have_format = true;
this->format = info;
if (info.info.raw.format == this->type.audio_format.S16) {
this->copy = this->ops.copy[CONV_S16_S16];
this->add = this->ops.add[CONV_S16_S16];
}
else if (info.info.raw.format == this->type.audio_format.F32) {
this->copy = this->ops.copy[CONV_F32_F32];
this->add = this->ops.add[CONV_F32_F32];
}
}
if (!port->have_format) {
this->n_formats++;
port->have_format = true;
}
}
return SPA_RESULT_OK;
@ -384,7 +430,7 @@ impl_node_port_get_format(struct spa_node *node,
spa_return_val_if_fail(CHECK_PORT(this, direction, port_id), SPA_RESULT_INVALID_PORT);
port = direction == SPA_DIRECTION_INPUT ? &this->in_ports[port_id] : &this->out_ports[0];
port = GET_PORT(this, direction, port_id);
if (!port->have_format)
return SPA_RESULT_NO_FORMAT;
@ -420,7 +466,7 @@ impl_node_port_get_info(struct spa_node *node,
spa_return_val_if_fail(CHECK_PORT(this, direction, port_id), SPA_RESULT_INVALID_PORT);
port = direction == SPA_DIRECTION_INPUT ? &this->in_ports[port_id] : &this->out_ports[0];
port = GET_PORT(this, direction, port_id);
*info = &port->info;
return SPA_RESULT_OK;
@ -462,8 +508,7 @@ impl_node_port_use_buffers(struct spa_node *node,
spa_return_val_if_fail(CHECK_PORT(this, direction, port_id), SPA_RESULT_INVALID_PORT);
port =
direction == SPA_DIRECTION_INPUT ? &this->in_ports[port_id] : &this->out_ports[port_id];
port = GET_PORT(this, direction, port_id);
spa_return_val_if_fail(port->have_format, SPA_RESULT_NO_FORMAT);
@ -518,10 +563,9 @@ impl_node_port_set_io(struct spa_node *node,
this = SPA_CONTAINER_OF(node, struct impl, node);
spa_return_val_if_fail(CHECK_PORT_NUM(this, direction, port_id), SPA_RESULT_INVALID_PORT);
spa_return_val_if_fail(CHECK_PORT(this, direction, port_id), SPA_RESULT_INVALID_PORT);
port =
direction == SPA_DIRECTION_INPUT ? &this->in_ports[port_id] : &this->out_ports[port_id];
port = GET_PORT(this, direction, port_id);
port->io = io;
return SPA_RESULT_OK;
@ -529,7 +573,7 @@ impl_node_port_set_io(struct spa_node *node,
static void recycle_buffer(struct impl *this, uint32_t id)
{
struct port *port = &this->out_ports[0];
struct port *port = GET_OUT_PORT(this, 0);
struct buffer *b = &port->buffers[id];
if (!b->outstanding) {
@ -582,17 +626,10 @@ add_port_data(struct impl *this, void *out, size_t outsize, struct port *port, i
insize = id[0].chunk->size - port->queued_offset;
outsize = SPA_MIN(outsize, insize);
{
int i, size = outsize / 2;
int16_t *op = out, *ip = in;
if (layer == 0) {
memcpy(op, ip, outsize);
} else {
for (i = 0; i < size; i++)
op[i] = SPA_CLAMP(op[i] + ip[i], INT16_MIN, INT16_MAX);
}
}
if (layer == 0)
this->copy(out, in, outsize);
else
this->add(out, in, outsize);
port->queued_offset += outsize;
port->queued_bytes -= outsize;
@ -615,11 +652,11 @@ static int mix_output(struct impl *this, size_t n_bytes)
struct buffer *outbuf;
int i, layer;
struct port *outport;
struct spa_port_io *output;
struct spa_port_io *outio;
struct spa_data *od;
outport = &this->out_ports[0];
output = outport->io;
outport = GET_OUT_PORT(this, 0);
outio = outport->io;
if (spa_list_is_empty(&outport->queue))
return SPA_RESULT_OUT_OF_BUFFERS;
@ -637,21 +674,21 @@ static int mix_output(struct impl *this, size_t n_bytes)
spa_log_trace(this->log, NAME " %p: dequeue output buffer %d %zd",
this, outbuf->outbuf->id, n_bytes);
for (layer = 0, i = 0; i < MAX_PORTS; i++) {
struct port *port = &this->in_ports[i];
struct port *in_port = GET_IN_PORT(this, i);
if (port->io == NULL || port->n_buffers == 0)
if (in_port->io == NULL || in_port->n_buffers == 0)
continue;
if (spa_list_is_empty(&port->queue)) {
if (spa_list_is_empty(&in_port->queue)) {
spa_log_warn(this->log, NAME " %p: underrun stream %d", this, i);
port->queued_bytes = 0;
port->queued_offset = 0;
in_port->queued_bytes = 0;
in_port->queued_offset = 0;
continue;
}
add_port_data(this, od[0].data, n_bytes, port, layer++);
add_port_data(this, od[0].data, n_bytes, in_port, layer++);
}
output->buffer_id = outbuf->outbuf->id;
output->status = SPA_RESULT_HAVE_BUFFER;
outio->buffer_id = outbuf->outbuf->id;
outio->status = SPA_RESULT_HAVE_BUFFER;
return SPA_RESULT_HAVE_BUFFER;
}
@ -662,64 +699,64 @@ static int impl_node_process_input(struct spa_node *node)
uint32_t i;
struct port *outport;
size_t min_queued = SIZE_MAX;
struct spa_port_io *output;
struct spa_port_io *outio;
spa_return_val_if_fail(node != NULL, SPA_RESULT_INVALID_ARGUMENTS);
this = SPA_CONTAINER_OF(node, struct impl, node);
outport = &this->out_ports[0];
output = outport->io;
spa_return_val_if_fail(output != NULL, SPA_RESULT_ERROR);
outport = GET_OUT_PORT(this, 0);
outio = outport->io;
spa_return_val_if_fail(outio != NULL, SPA_RESULT_ERROR);
if (output->status == SPA_RESULT_HAVE_BUFFER)
if (outio->status == SPA_RESULT_HAVE_BUFFER)
return SPA_RESULT_HAVE_BUFFER;
for (i = 0; i < MAX_PORTS; i++) {
struct port *port = &this->in_ports[i];
struct spa_port_io *input;
struct port *inport = GET_IN_PORT(this, i);
struct spa_port_io *inio;
if ((input = port->io) == NULL || port->n_buffers == 0)
if ((inio = inport->io) == NULL || inport->n_buffers == 0)
continue;
if (port->queued_bytes == 0 &&
input->status == SPA_RESULT_HAVE_BUFFER && input->buffer_id != SPA_ID_INVALID) {
struct buffer *b = &port->buffers[input->buffer_id];
if (inport->queued_bytes == 0 &&
inio->status == SPA_RESULT_HAVE_BUFFER && inio->buffer_id != SPA_ID_INVALID) {
struct buffer *b = &inport->buffers[inio->buffer_id];
if (!b->outstanding) {
spa_log_warn(this->log, NAME " %p: buffer %u in use", this,
input->buffer_id);
input->status = SPA_RESULT_INVALID_BUFFER_ID;
inio->buffer_id);
inio->status = SPA_RESULT_INVALID_BUFFER_ID;
continue;
}
b->outstanding = false;
input->buffer_id = SPA_ID_INVALID;
input->status = SPA_RESULT_OK;
inio->buffer_id = SPA_ID_INVALID;
inio->status = SPA_RESULT_OK;
spa_list_insert(port->queue.prev, &b->link);
port->queued_bytes += b->outbuf->datas[0].chunk->size;
spa_list_insert(inport->queue.prev, &b->link);
inport->queued_bytes += b->outbuf->datas[0].chunk->size;
spa_log_trace(this->log, NAME " %p: queue buffer %d on port %d %zd %zd",
this, b->outbuf->id, i, port->queued_bytes, min_queued);
this, b->outbuf->id, i, inport->queued_bytes, min_queued);
}
if (port->queued_bytes > 0 && port->queued_bytes < min_queued)
min_queued = port->queued_bytes;
if (inport->queued_bytes > 0 && inport->queued_bytes < min_queued)
min_queued = inport->queued_bytes;
}
if (min_queued != SIZE_MAX && min_queued > 0) {
output->status = mix_output(this, min_queued);
outio->status = mix_output(this, min_queued);
} else {
output->status = SPA_RESULT_NEED_BUFFER;
outio->status = SPA_RESULT_NEED_BUFFER;
}
return output->status;
return outio->status;
}
static int impl_node_process_output(struct spa_node *node)
{
struct impl *this;
struct port *port;
struct spa_port_io *output;
struct port *outport;
struct spa_port_io *outio;
int i;
size_t min_queued = SIZE_MAX;
@ -727,50 +764,50 @@ static int impl_node_process_output(struct spa_node *node)
this = SPA_CONTAINER_OF(node, struct impl, node);
port = &this->out_ports[0];
output = port->io;
spa_return_val_if_fail(output != NULL, SPA_RESULT_ERROR);
outport = GET_OUT_PORT(this, 0);
outio = outport->io;
spa_return_val_if_fail(outio != NULL, SPA_RESULT_ERROR);
if (output->status == SPA_RESULT_HAVE_BUFFER)
if (outio->status == SPA_RESULT_HAVE_BUFFER)
return SPA_RESULT_HAVE_BUFFER;
/* recycle */
if (output->buffer_id != SPA_ID_INVALID) {
recycle_buffer(this, output->buffer_id);
output->buffer_id = SPA_ID_INVALID;
if (outio->buffer_id != SPA_ID_INVALID) {
recycle_buffer(this, outio->buffer_id);
outio->buffer_id = SPA_ID_INVALID;
}
/* produce more output if possible */
for (i = 0; i < MAX_PORTS; i++) {
struct port *port = &this->in_ports[i];
struct port *inport = GET_IN_PORT(this, i);
if (port->io == NULL || port->n_buffers == 0)
if (inport->io == NULL || inport->n_buffers == 0)
continue;
if (port->queued_bytes < min_queued)
min_queued = port->queued_bytes;
if (inport->queued_bytes < min_queued)
min_queued = inport->queued_bytes;
}
if (min_queued != SIZE_MAX && min_queued > 0) {
output->status = mix_output(this, min_queued);
outio->status = mix_output(this, min_queued);
} else {
/* take requested output range and apply to input */
for (i = 0; i < MAX_PORTS; i++) {
struct port *port = &this->in_ports[i];
struct spa_port_io *input;
struct port *inport = GET_IN_PORT(this, i);
struct spa_port_io *inio;
if ((input = port->io) == NULL || port->n_buffers == 0)
if ((inio = inport->io) == NULL || inport->n_buffers == 0)
continue;
if (port->queued_bytes == 0) {
input->range = output->range;
input->status = SPA_RESULT_NEED_BUFFER;
if (inport->queued_bytes == 0) {
inio->range = outio->range;
inio->status = SPA_RESULT_NEED_BUFFER;
} else {
input->status = SPA_RESULT_OK;
inio->status = SPA_RESULT_OK;
}
spa_log_trace(this->log, NAME " %p: port %d %d queued %zd, res %d", this,
i, output->range.min_size, port->queued_bytes, input->status);
i, outio->range.min_size, inport->queued_bytes, inio->status);
}
}
return output->status;
return outio->status;
}
static const struct spa_node impl_node = {
@ -829,6 +866,7 @@ impl_init(const struct spa_handle_factory *factory,
uint32_t n_support)
{
struct impl *this;
struct port *port;
uint32_t i;
spa_return_val_if_fail(factory != NULL, SPA_RESULT_INVALID_ARGUMENTS);
@ -853,10 +891,12 @@ impl_init(const struct spa_handle_factory *factory,
this->node = impl_node;
this->out_ports[0].io = NULL;
this->out_ports[0].info.flags = SPA_PORT_INFO_FLAG_CAN_USE_BUFFERS |
port = GET_OUT_PORT(this, 0);
port->info.flags = SPA_PORT_INFO_FLAG_CAN_USE_BUFFERS |
SPA_PORT_INFO_FLAG_NO_REF;
spa_list_init(&this->out_ports[0].queue);
spa_list_init(&port->queue);
spa_audiomixer_get_ops(&this->ops);
return SPA_RESULT_OK;
}

264
spa/plugins/audiomixer/conv.c Normal file
View file

@ -0,0 +1,264 @@
/* Spa
* Copyright (C) 2017 Wim Taymans <wim.taymans@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "conv.h"
static void
copy_s16_s16(void *dst, const void *src, int n_bytes)
{
memcpy(dst, src, n_bytes);
}
static void
copy_f32_f32(void *dst, const void *src, int n_bytes)
{
memcpy(dst, src, n_bytes);
}
static void
add_s16_s16(void *dst, const void *src, int n_bytes)
{
const int16_t *s = src;
int16_t *d = dst;
int32_t t;
n_bytes /= sizeof(int16_t);
while (n_bytes--) {
t = *d + *s;
*d = SPA_CLAMP(t, INT16_MIN, INT16_MAX);
d++;
s++;
}
}
static void
add_f32_f32(void *dst, const void *src, int n_bytes)
{
const float *s = src;
float *d = dst;
n_bytes /= sizeof(float);
while (n_bytes--) {
*d += *s;
d++;
s++;
}
}
static void
copy_scale_s16_s16(void *dst, const void *src, const void *scale, int n_bytes)
{
const int16_t *s = src;
int16_t *d = dst;;
int32_t v = *(int16_t*)scale, t;
n_bytes /= sizeof(int16_t);
while (n_bytes--) {
t = (*s * v) >> 16;
*d = SPA_CLAMP(t, INT16_MIN, INT16_MAX);
d++;
s++;
}
}
static void
copy_scale_f32_f32(void *dst, const void *src, const void *scale, int n_bytes)
{
const float *s = src;
float *d = dst;
float v = *(float*)scale;
n_bytes /= sizeof(float);
while (n_bytes--) {
*d = *s * v;
d++;
s++;
}
}
static void
add_scale_s16_s16(void *dst, const void *src, const void *scale, int n_bytes)
{
const int16_t *s = src;
int16_t *d = dst;
int32_t v = *(int16_t*)scale, t;
n_bytes /= sizeof(int16_t);
while (n_bytes--) {
t = *d + ((*s * v) >> 16);
*d = SPA_CLAMP(t, INT16_MIN, INT16_MAX);
d++;
s++;
}
}
static void
add_scale_f32_f32(void *dst, const void *src, const void *scale, int n_bytes)
{
const float *s = src;
float *d = dst;
float v = *(float*)scale;
n_bytes /= sizeof(float);
while (n_bytes--) {
*d += *s * v;
d++;
s++;
}
}
static void
copy_s16_s16_i(void *dst, int dst_stride, const void *src, int src_stride, int n_bytes)
{
const int16_t *s = src;
int16_t *d = dst;
n_bytes /= sizeof(int16_t);
while (n_bytes--) {
*d = *s;
d += dst_stride;
s += src_stride;
}
}
static void
copy_f32_f32_i(void *dst, int dst_stride, const void *src, int src_stride, int n_bytes)
{
const float *s = src;
float *d = dst;
n_bytes /= sizeof(float);
while (n_bytes--) {
*d = *s;
d += dst_stride;
s += src_stride;
}
}
static void
add_s16_s16_i(void *dst, int dst_stride, const void *src, int src_stride, int n_bytes)
{
const int16_t *s = src;
int16_t *d = dst;
int32_t t;
n_bytes /= sizeof(int16_t);
while (n_bytes--) {
t = *d + *s;
*d = SPA_CLAMP(t, INT16_MIN, INT16_MAX);
d += dst_stride;
s += src_stride;
}
}
static void
add_f32_f32_i(void *dst, int dst_stride, const void *src, int src_stride, int n_bytes)
{
const float *s = src;
float *d = dst;
n_bytes /= sizeof(float);
while (n_bytes--) {
*d += *s;
d += dst_stride;
s += src_stride;
}
}
static void
copy_scale_s16_s16_i(void *dst, int dst_stride, const void *src, int src_stride, const void *scale, int n_bytes)
{
const int16_t *s = src;
int16_t *d = dst;
int32_t v = *(int16_t*)scale, t;
n_bytes /= sizeof(int16_t);
while (n_bytes--) {
t = (*s * v) >> 16;
*d = SPA_CLAMP(t, INT16_MIN, INT16_MAX);
d += dst_stride;
s += src_stride;
}
}
static void
copy_scale_f32_f32_i(void *dst, int dst_stride, const void *src, int src_stride, const void *scale, int n_bytes)
{
const float *s = src;
float *d = dst;
float v = *(float*)scale;
n_bytes /= sizeof(float);
while (n_bytes--) {
*d = *s * v;
d += dst_stride;
s += src_stride;
}
}
static void
add_scale_s16_s16_i(void *dst, int dst_stride, const void *src, int src_stride, const void *scale, int n_bytes)
{
const int16_t *s = src;
int16_t *d = dst;
int32_t v = *(int16_t*)scale, t;
n_bytes /= sizeof(int16_t);
while (n_bytes--) {
t = *d + ((*s * v) >> 16);
*d = SPA_CLAMP(t, INT16_MIN, INT16_MAX);
d += dst_stride;
s += src_stride;
}
}
static void
add_scale_f32_f32_i(void *dst, int dst_stride, const void *src, int src_stride, const void *scale, int n_bytes)
{
const float *s = src;
float *d = dst;
float v = *(float*)scale;
n_bytes /= sizeof(float);
while (n_bytes--) {
*d += *s * v;
d += dst_stride;
s += src_stride;
}
}
void spa_audiomixer_get_ops(struct spa_audiomixer_ops *ops)
{
ops->copy[CONV_S16_S16] = copy_s16_s16;
ops->copy[CONV_F32_F32] = copy_f32_f32;
ops->add[CONV_S16_S16] = add_s16_s16;
ops->add[CONV_F32_F32] = add_f32_f32;
ops->copy_scale[CONV_S16_S16] = copy_scale_s16_s16;
ops->copy_scale[CONV_F32_F32] = copy_scale_f32_f32;
ops->add_scale[CONV_S16_S16] = add_scale_s16_s16;
ops->add_scale[CONV_F32_F32] = add_scale_f32_f32;
ops->copy_i[CONV_S16_S16] = copy_s16_s16_i;
ops->copy_i[CONV_F32_F32] = copy_f32_f32_i;
ops->add_i[CONV_S16_S16] = add_s16_s16_i;
ops->add_i[CONV_F32_F32] = add_f32_f32_i;
ops->copy_scale_i[CONV_S16_S16] = copy_scale_s16_s16_i;
ops->copy_scale_i[CONV_F32_F32] = copy_scale_f32_f32_i;
ops->add_scale_i[CONV_S16_S16] = add_scale_s16_s16_i;
ops->add_scale_i[CONV_F32_F32] = add_scale_f32_f32_i;
}

48
spa/plugins/audiomixer/conv.h Normal file
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@ -0,0 +1,48 @@
/* Spa
* Copyright (C) 2017 Wim Taymans <wim.taymans@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include <string.h>
#include <stdio.h>
#include <spa/defs.h>
typedef void (*mix_func_t) (void *dst, const void *src, int n_bytes);
typedef void (*mix_scale_func_t) (void *dst, const void *src, const void *scale, int n_bytes);
typedef void (*mix_i_func_t) (void *dst, int dst_stride,
const void *src, int src_stride, int n_bytes);
typedef void (*mix_scale_i_func_t) (void *dst, int dst_stride,
const void *src, int src_stride, const void *scale, int n_bytes);
enum {
CONV_S16_S16,
CONV_F32_F32,
CONV_MAX,
};
struct spa_audiomixer_ops {
mix_func_t copy[CONV_MAX];
mix_func_t add[CONV_MAX];
mix_scale_func_t copy_scale[CONV_MAX];
mix_scale_func_t add_scale[CONV_MAX];
mix_i_func_t copy_i[CONV_MAX];
mix_i_func_t add_i[CONV_MAX];
mix_scale_i_func_t copy_scale_i[CONV_MAX];
mix_scale_i_func_t add_scale_i[CONV_MAX];
};
void spa_audiomixer_get_ops(struct spa_audiomixer_ops *ops);

2
spa/plugins/audiomixer/meson.build
View file

@ -1,4 +1,4 @@
audiomixer_sources = ['audiomixer.c', 'plugin.c']
audiomixer_sources = ['audiomixer.c', 'conv.c', 'plugin.c']
audiomixerlib = shared_library('spa-audiomixer',
audiomixer_sources,