Commit dd8573a5 authored by Wim Taymans's avatar Wim Taymans

bluez5: add ldac codec

parent 3363544d
......@@ -28,6 +28,7 @@ if get_option('spa-plugins')
if get_option('bluez5')
bluez_dep = dependency('bluez', version : '>= 4.101')
sbc_dep = dependency('sbc')
ldac_dep = dependency('ldacBT-enc', required : false)
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endif
if get_option('ffmpeg')
avcodec_dep = dependency('libavcodec')
......
/* Spa A2DP LDAC codec
*
* Copyright © 2020 Wim Taymans
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include <unistd.h>
#include <stddef.h>
#include <errno.h>
#include <arpa/inet.h>
#include <spa/param/audio/format.h>
#include <ldacBT.h>
#include "defs.h"
#include "rtp.h"
#include "a2dp-codecs.h"
#define MAX_FRAME_COUNT 16
struct impl {
HANDLE_LDAC_BT ldac;
struct rtp_header *header;
struct rtp_payload *payload;
int mtu;
int eqmid;
int channel_mode;
int frequency;
int fmt;
int lsu;
int codesize;
int frame_length;
};
static int codec_fill_caps(uint32_t flags, uint8_t caps[A2DP_MAX_CAPS_SIZE])
{
const a2dp_ldac_t a2dp_ldac = {
.info.vendor_id = LDAC_VENDOR_ID,
.info.codec_id = LDAC_CODEC_ID,
.frequency = LDACBT_SAMPLING_FREQ_044100 |
LDACBT_SAMPLING_FREQ_048000 |
LDACBT_SAMPLING_FREQ_088200 |
LDACBT_SAMPLING_FREQ_096000 |
LDACBT_SAMPLING_FREQ_176400 |
LDACBT_SAMPLING_FREQ_192000,
.channel_mode = LDACBT_CHANNEL_MODE_MONO |
LDACBT_CHANNEL_MODE_DUAL_CHANNEL |
LDACBT_CHANNEL_MODE_STEREO,
};
memcpy(caps, &a2dp_ldac, sizeof(a2dp_ldac));
return sizeof(a2dp_ldac);
}
static int codec_select_config(uint32_t flags, const void *caps, size_t caps_size,
const struct spa_audio_info *info, uint8_t config[A2DP_MAX_CAPS_SIZE])
{
a2dp_ldac_t conf;
if (caps_size < sizeof(conf))
return -EINVAL;
memcpy(&conf, caps, sizeof(conf));
conf.info.vendor_id = LDAC_VENDOR_ID;
conf.info.codec_id = LDAC_CODEC_ID;
if (conf.frequency & LDACBT_SAMPLING_FREQ_044100)
conf.frequency = LDACBT_SAMPLING_FREQ_044100;
if (conf.frequency & LDACBT_SAMPLING_FREQ_048000)
conf.frequency = LDACBT_SAMPLING_FREQ_048000;
if (conf.frequency & LDACBT_SAMPLING_FREQ_088200)
conf.frequency = LDACBT_SAMPLING_FREQ_088200;
if (conf.frequency & LDACBT_SAMPLING_FREQ_096000)
conf.frequency = LDACBT_SAMPLING_FREQ_096000;
if (conf.frequency & LDACBT_SAMPLING_FREQ_176400)
conf.frequency = LDACBT_SAMPLING_FREQ_176400;
if (conf.frequency & LDACBT_SAMPLING_FREQ_192000)
conf.frequency = LDACBT_SAMPLING_FREQ_192000;
else
return -ENOTSUP;
if (conf.channel_mode & LDACBT_CHANNEL_MODE_STEREO)
conf.channel_mode = LDACBT_CHANNEL_MODE_STEREO;
else if (conf.channel_mode & LDACBT_CHANNEL_MODE_DUAL_CHANNEL)
conf.channel_mode = LDACBT_CHANNEL_MODE_DUAL_CHANNEL;
else if (conf.channel_mode & LDACBT_CHANNEL_MODE_MONO)
conf.channel_mode = LDACBT_CHANNEL_MODE_MONO;
else
return -ENOTSUP;
memcpy(config, &conf, sizeof(conf));
return sizeof(conf);
}
static int codec_reduce_bitpool(void *data)
{
struct impl *this = data;
return ldacBT_alter_eqmid_priority(this->ldac, LDACBT_EQMID_INC_CONNECTION);
}
static int codec_increase_bitpool(void *data)
{
struct impl *this = data;
return ldacBT_alter_eqmid_priority(this->ldac, LDACBT_EQMID_INC_QUALITY);
}
static int codec_get_num_blocks(void *data, size_t mtu)
{
struct impl *this = data;
size_t rtp_size = sizeof(struct rtp_header) + sizeof(struct rtp_payload);
size_t frame_count = (mtu - rtp_size) / this->frame_length;
/* frame_count is only 4 bit number */
if (frame_count > 15)
frame_count = 15;
return frame_count;
}
static int codec_get_block_size(void *data)
{
struct impl *this = data;
return this->codesize;
}
static void *codec_init(uint32_t flags, void *config, size_t config_len, struct spa_audio_info *info)
{
struct impl *this;
a2dp_ldac_t *conf = config;
int res;
this = calloc(1, sizeof(struct impl));
if (this == NULL)
goto error_errno;
this->ldac = ldacBT_get_handle();
if (this->ldac == NULL)
goto error_errno;
this->eqmid = LDACBT_EQMID_SQ;
spa_zero(*info);
info->media_type = SPA_MEDIA_TYPE_audio;
info->media_subtype = SPA_MEDIA_SUBTYPE_raw;
info->info.raw.format = SPA_AUDIO_FORMAT_S16;
this->fmt = LDACBT_SMPL_FMT_S16;
switch(conf->frequency) {
case LDACBT_SAMPLING_FREQ_044100:
info->info.raw.rate = 44100;
this->lsu = 128;
break;
case LDACBT_SAMPLING_FREQ_048000:
info->info.raw.rate = 48000;
this->lsu = 128;
break;
case LDACBT_SAMPLING_FREQ_088200:
info->info.raw.rate = 88200;
this->lsu = 256;
break;
case LDACBT_SAMPLING_FREQ_096000:
info->info.raw.rate = 96000;
this->lsu = 256;
break;
case LDACBT_SAMPLING_FREQ_176400:
info->info.raw.rate = 176400;
this->lsu = 512;
break;
case LDACBT_SAMPLING_FREQ_192000:
info->info.raw.rate = 192000;
this->lsu = 512;
break;
default:
res = -EINVAL;
goto error;
}
this->frequency = info->info.raw.rate;
switch(conf->channel_mode) {
case LDACBT_CHANNEL_MODE_STEREO:
info->info.raw.channels = 2;
break;
case LDACBT_CHANNEL_MODE_DUAL_CHANNEL:
info->info.raw.channels = 2;
break;
case LDACBT_CHANNEL_MODE_MONO:
info->info.raw.channels = 1;
break;
default:
res = -EINVAL;
goto error;
}
this->channel_mode = conf->channel_mode;
switch (this->eqmid) {
case LDACBT_EQMID_HQ:
this->frame_length = 330;
break;
case LDACBT_EQMID_SQ:
this->frame_length = 220;
break;
case LDACBT_EQMID_MQ:
this->frame_length = 110;
break;
default:
res = -EINVAL;
goto error;
}
res = ldacBT_init_handle_encode(this->ldac,
this->mtu,
this->eqmid,
this->channel_mode,
this->fmt,
this->frequency);
if (res < 0)
goto error;
this->codesize = this->lsu * info->info.raw.channels * 2;
return this;
error_errno:
res = -errno;
error:
free(this);
errno = -res;
return NULL;
}
static void codec_deinit(void *data)
{
struct impl *this = data;
if (this->ldac)
ldacBT_free_handle(this->ldac);
free(this);
}
static int codec_start_encode (void *data,
void *dst, size_t dst_size, uint16_t seqnum, uint32_t timestamp)
{
struct impl *this = data;
this->header = (struct rtp_header *)dst;
this->payload = SPA_MEMBER(dst, sizeof(struct rtp_header), struct rtp_payload);
memset(this->header, 0, sizeof(struct rtp_header)+sizeof(struct rtp_payload));
this->payload->frame_count = 0;
this->header->v = 2;
this->header->pt = 1;
this->header->sequence_number = htons(seqnum);
this->header->timestamp = htonl(timestamp);
this->header->ssrc = htonl(1);
return sizeof(struct rtp_header) + sizeof(struct rtp_payload);
}
static int codec_encode(void *data,
const void *src, size_t src_size,
void *dst, size_t dst_size,
size_t *dst_out)
{
struct impl *this = data;
int res, src_used, dst_used, frame_num = 0;
src_used = src_size;
dst_used = dst_size;
res = ldacBT_encode(this->ldac, (void*)src, &src_used, dst, &dst_used, &frame_num);
if (res < 0)
return -EINVAL;
*dst_out = dst_used;
this->payload->frame_count += frame_num;
return src_used;
}
struct a2dp_codec a2dp_codec_ldac = {
.id = {.codec_id = A2DP_CODEC_VENDOR,
.vendor_id = LDAC_VENDOR_ID,
.vendor_codec_id = LDAC_CODEC_ID },
.name = "ldac",
.description = "LDAC",
.fill_caps = codec_fill_caps,
.select_config = codec_select_config,
.init = codec_init,
.deinit = codec_deinit,
.get_block_size = codec_get_block_size,
.get_num_blocks = codec_get_num_blocks,
.start_encode = codec_start_encode,
.encode = codec_encode,
.reduce_bitpool = codec_reduce_bitpool,
.increase_bitpool = codec_increase_bitpool,
};
......@@ -69,6 +69,9 @@ const a2dp_aptx_t bluez_a2dp_aptx = {
#endif
extern struct a2dp_codec a2dp_codec_sbc;
#if ENABLE_LDAC
extern struct a2dp_codec a2dp_codec_ldac;
#endif
#if ENABLE_AAC
extern struct a2dp_codec a2dp_codec_aac;
#endif
......@@ -81,6 +84,9 @@ extern struct a2dp_codec a2dp_codec_aptx;
const struct a2dp_codec *a2dp_codec_list[] = {
&a2dp_codec_sbc,
#if ENABLE_LDAC
&a2dp_codec_ldac,
#endif
#if ENABLE_AAC
&a2dp_codec_aac,
#endif
......
......@@ -176,6 +176,12 @@ typedef struct {
uint16_t codec_id;
} __attribute__ ((packed)) a2dp_vendor_codec_t;
typedef struct {
a2dp_vendor_codec_t info;
uint8_t frequency;
uint8_t channel_mode;
} __attribute__ ((packed)) a2dp_ldac_t;
#if __BYTE_ORDER == __LITTLE_ENDIAN
typedef struct {
......@@ -216,11 +222,6 @@ typedef struct {
uint8_t frequency:4;
} __attribute__ ((packed)) a2dp_aptx_t;
typedef struct {
a2dp_vendor_codec_t info;
uint8_t unknown[2];
} __attribute__ ((packed)) a2dp_ldac_t;
#elif __BYTE_ORDER == __BIG_ENDIAN
typedef struct {
......@@ -268,14 +269,6 @@ typedef struct {
uint32_t rfa;
} __attribute__ ((packed)) a2dp_aptx_hd_t;
typedef struct {
a2dp_vendor_codec_t info;
uint8_t rfa1:2;
uint8_t frequency:6;
uint8_t rfa2:5;
uint8_t channel_mode:3;
} __attribute__ ((packed)) a2dp_ldac_t;
#else
#error "Unknown byte order"
......
......@@ -1331,6 +1331,7 @@ static DBusHandlerResult object_manager_handler(DBusConnection *c, DBusMessage *
if (caps_size < 0)
continue;
spa_log_info(monitor->log, "register A2DP codec %s", a2dp_codecs[i]->name);
endpoint = spa_aprintf("%s/%s", A2DP_SINK_ENDPOINT, codec->name);
append_a2dp_object(&array, endpoint, SPA_BT_UUID_A2DP_SINK, codec_id, caps, caps_size);
free(endpoint);
......
......@@ -10,6 +10,15 @@ bluez5_sources = ['plugin.c',
'bluez5-device.c',
'bluez5-dbus.c']
bluez5_args = [ '-D_GNU_SOURCE' ]
bluez5_deps = [ dbus_dep, sbc_dep, bluez_dep ]
if ldac_dep.found()
bluez5_sources += [ 'a2dp-codec-ldac.c' ]
bluez5_args += [ '-DENABLE_LDAC' ]
bluez5_deps += ldac_dep
endif
if get_option('bluez5-backend-native')
bluez5_sources += ['backend-hsp-native.c']
endif
......@@ -25,7 +34,7 @@ endif
bluez5lib = shared_library('spa-bluez5',
bluez5_sources,
include_directories : [ spa_inc, configinc ],
c_args : [ '-D_GNU_SOURCE' ],
dependencies : [ dbus_dep, sbc_dep, bluez_dep ],
c_args : bluez5_args,
dependencies : bluez5_deps,
install : true,
install_dir : join_paths(spa_plugindir, 'bluez5'))
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