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/*
* BlueALSA - bluez-a2dp.c
* Copyright (c) 2016-2017 Arkadiusz Bokowy
*
* This file is a part of bluez-alsa.
*
* This project is licensed under the terms of the MIT license.
*
*/
#include <spa/utils/string.h>
#include "media-codecs.h"
int media_codec_select_config(const struct media_codec_config configs[], size_t n,
uint32_t cap, int preferred_value)
{
size_t i;
int *scores, res;
unsigned int max_priority;
if (n == 0)
return -EINVAL;
scores = calloc(n, sizeof(int));
if (scores == NULL)
return -errno;
max_priority = configs[0].priority;
for (i = 1; i < n; ++i) {
if (configs[i].priority > max_priority)
max_priority = configs[i].priority;
}
for (i = 0; i < n; ++i) {
if (!(configs[i].config & cap)) {
scores[i] = -1;
continue;
}
if (configs[i].value == preferred_value)
scores[i] = 100 * (max_priority + 1);
else if (configs[i].value > preferred_value)
scores[i] = 10 * (max_priority + 1);
else
scores[i] = 1;
scores[i] *= configs[i].priority + 1;
}
res = 0;
for (i = 1; i < n; ++i) {
if (scores[i] > scores[res])
res = i;
}
if (scores[res] < 0)
res = -EINVAL;
free(scores);
return res;
}
bool media_codec_check_caps(const struct media_codec *codec, unsigned int codec_id,
const void *caps, size_t caps_size,
const struct media_codec_audio_info *info,
const struct spa_dict *global_settings)
{
uint8_t config[A2DP_MAX_CAPS_SIZE];
int res;
if (codec_id != codec->codec_id)
return false;
if (caps == NULL)
return false;
res = codec->select_config(codec, 0, caps, caps_size, info, global_settings, config);
if (res < 0)
return false;
if (codec->bap)
return true;
else
return ((size_t)res == caps_size);
}
#ifdef CODEC_PLUGIN
struct impl {
struct spa_handle handle;
struct spa_bluez5_codec_a2dp bluez5_codec_a2dp;
};
static int
impl_get_interface(struct spa_handle *handle, const char *type, void **interface)
{
struct impl *this;
spa_return_val_if_fail(handle != NULL, -EINVAL);
spa_return_val_if_fail(interface != NULL, -EINVAL);
this = (struct impl *) handle;
if (spa_streq(type, SPA_TYPE_INTERFACE_Bluez5CodecMedia))
*interface = &this->bluez5_codec_a2dp;
else
return -ENOENT;
return 0;
}
static int
impl_clear(struct spa_handle *handle)
{
spa_return_val_if_fail(handle != NULL, -EINVAL);
return 0;
}
static size_t
impl_get_size(const struct spa_handle_factory *factory, const struct spa_dict *params)
{
return sizeof(struct impl);
}
static int
impl_init(const struct spa_handle_factory *factory,
struct spa_handle *handle,
const struct spa_dict *info,
const struct spa_support *support,
uint32_t n_support)
{
struct impl *this;
spa_return_val_if_fail(factory != NULL, -EINVAL);
spa_return_val_if_fail(handle != NULL, -EINVAL);
handle->get_interface = impl_get_interface;
handle->clear = impl_clear;
this = (struct impl *) handle;
this->bluez5_codec_a2dp.codecs = codec_plugin_media_codecs;
this->bluez5_codec_a2dp.iface = SPA_INTERFACE_INIT(
SPA_TYPE_INTERFACE_Bluez5CodecMedia,
SPA_VERSION_BLUEZ5_CODEC_MEDIA,
NULL,
this);
return 0;
}
static const struct spa_interface_info impl_interfaces[] = {
{SPA_TYPE_INTERFACE_Bluez5CodecMedia,},
};
static int
impl_enum_interface_info(const struct spa_handle_factory *factory,
const struct spa_interface_info **info,
uint32_t *index)
{
spa_return_val_if_fail(factory != NULL, -EINVAL);
spa_return_val_if_fail(info != NULL, -EINVAL);
spa_return_val_if_fail(index != NULL, -EINVAL);
switch (*index) {
case 0:
*info = &impl_interfaces[*index];
break;
default:
return 0;
}
(*index)++;
return 1;
}
static const struct spa_dict_item handle_info_items[] = {
{ SPA_KEY_FACTORY_DESCRIPTION, "Bluetooth codec plugin" },
};
static const struct spa_dict handle_info = SPA_DICT_INIT_ARRAY(handle_info_items);
static struct spa_handle_factory handle_factory = {
SPA_VERSION_HANDLE_FACTORY,
NULL,
&handle_info,
impl_get_size,
impl_init,
impl_enum_interface_info,
};
SPA_EXPORT
int spa_handle_factory_enum(const struct spa_handle_factory **factory, uint32_t *index)
{
spa_return_val_if_fail(factory != NULL, -EINVAL);
spa_return_val_if_fail(index != NULL, -EINVAL);
if (handle_factory.name == NULL)
handle_factory.name = codec_plugin_factory_name;
switch (*index) {
case 0:
*factory = &handle_factory;
break;
default:
return 0;
}
(*index)++;
return 1;
}
#endif
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