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exampe/a2dp_sink_demo: set volume via btstack_audio_sink interface

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This commit is contained in:
Matthias Ringwald 2020-06-26 16:53:55 +02:00
parent 1b7f8fa10e
commit 23490436ec
1 changed files with 22 additions and 6 deletions
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28
example/a2dp_sink_demo.c
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@ -72,6 +72,9 @@
#include "btstack_resample.h"
//#define AVRCP_BROWSING_ENABLED
// if volume control not supported by btstack_audio_sink, you can try to disable volume change notification
// to force the A2DP Source to reduce volume by attenuating the audio stream
#define SUPPORT_VOLUME_CHANGE_NOTIFICATION
#ifdef HAVE_BTSTACK_STDIN
@ -717,6 +720,12 @@ static void avrcp_controller_packet_handler(uint8_t packet_type, uint16_t channe
}
}
static void avrcp_volume_changed(uint8_t volume){
const btstack_audio_sink_t * audio = btstack_audio_sink_get_instance();
if (audio){
audio->set_volume(volume);
}
}
static void avrcp_target_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
UNUSED(channel);
@ -725,13 +734,15 @@ static void avrcp_target_packet_handler(uint8_t packet_type, uint16_t channel, u
if (packet_type != HCI_EVENT_PACKET) return;
if (hci_event_packet_get_type(packet) != HCI_EVENT_AVRCP_META) return;
int volume;
uint8_t volume;
const btstack_audio_sink_t * audio;
switch (packet[2]){
case AVRCP_SUBEVENT_NOTIFICATION_VOLUME_CHANGED:
volume = avrcp_subevent_notification_volume_changed_get_absolute_volume(packet);
volume_percentage = volume * 100 / 127;
printf("AVRCP Target : Volume set to %d%% (%d)\n", volume_percentage, volume);
avrcp_volume_changed(volume);
break;
case AVRCP_SUBEVENT_EVENT_IDS_QUERY:
@ -942,7 +953,8 @@ static void show_usage(void){
#ifdef HAVE_BTSTACK_STDIN
static void stdin_process(char cmd){
uint8_t status = ERROR_CODE_SUCCESS;
uint8_t volume;
switch (cmd){
case 'b':
status = a2dp_sink_establish_stream(device_addr, a2dp_local_seid, &a2dp_cid);
@ -971,13 +983,17 @@ static void stdin_process(char cmd){
// Volume Control
case 't':
volume_percentage = volume_percentage <= 90 ? volume_percentage + 10 : 100;
printf(" - volume up for 10 percent, %d%% (%d) \n", volume_percentage, volume_percentage * 127 / 100);
status = avrcp_target_volume_changed(avrcp_cid, volume_percentage * 127 / 100);
volume = volume_percentage * 127 / 100;
printf(" - volume up for 10 percent, %d%% (%d) \n", volume_percentage, volume);
status = avrcp_target_volume_changed(avrcp_cid, volume);
avrcp_volume_changed(volume);
break;
case 'T':
volume_percentage = volume_percentage >= 10 ? volume_percentage - 10 : 0;
printf(" - volume down for 10 percent, %d%% (%d) \n", volume_percentage, volume_percentage * 127 / 100);
status = avrcp_target_volume_changed(avrcp_cid, volume_percentage * 127 / 100);
volume = volume_percentage * 127 / 100;
printf(" - volume down for 10 percent, %d%% (%d) \n", volume_percentage, volume);
status = avrcp_target_volume_changed(avrcp_cid, volume);
avrcp_volume_changed(volume);
break;
case 'O':