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example/a2dp_source_demo: add option for VOLUME_REDUCTION

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This commit is contained in:
Matthias Ringwald 2018-02-20 15:57:55 +01:00
parent 578eda3e1c
commit 7d09721a4b
1 changed files with 15 additions and 1 deletions
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16
example/a2dp_source_demo.c
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@ -66,6 +66,9 @@
#include "hxcmod.h"
#include "mods/mod.h"
// logarithmic volume reduction, samples are divided by 2^x
// #define VOLUME_REDUCTION 3
#define AVRCP_BROWSING_ENABLED 0
#define NUM_CHANNELS 2
@ -143,6 +146,7 @@ static const char * device_addr_string = "00:21:3C:AC:F7:38";
// RT-B6: static const char * device_addr_string = "00:75:58:FF:C9:7D";
// BT dongle: static const char * device_addr_string = "00:1A:7D:DA:71:0A";
// Sony MDR-ZX330BT static const char * device_addr_string = "00:18:09:28:50:18";
// Panda (BM6) static const char * device_addr_string = "4F:3F:66:52:8B:E0";
static bd_addr_t device_addr;
static uint8_t sdp_a2dp_source_service_buffer[150];
@ -327,6 +331,16 @@ static void produce_audio(int16_t * pcm_buffer, int num_samples){
default:
break;
}
#ifdef VOLUME_REDUCTION
int i;
for (i=0;i<num_samples*2;i++){
if (pcm_buffer[i] > 0){
pcm_buffer[i] = pcm_buffer[i] >> VOLUME_REDUCTION;
} else {
pcm_buffer[i] = -((-pcm_buffer[i]) >> VOLUME_REDUCTION);
}
}
#endif
}
static int a2dp_demo_fill_sbc_audio_buffer(a2dp_media_sending_context_t * context){
@ -631,7 +645,7 @@ static void show_usage(void){
bd_addr_t iut_address;
gap_local_bd_addr(iut_address);
printf("\n--- Bluetooth A2DP Source/AVRCP Target Demo %s ---\n", bd_addr_to_str(iut_address));
printf("b - AVDTP Source create connection to addr %s\n", device_addr_string);
printf("b - AVDTP Source create connection to addr %s\n", device_addr_string);
printf("B - AVDTP Source disconnect\n");
printf("c - AVRCP Target create connection to addr %s\n", device_addr_string);
printf("C - AVRCP Target disconnect\n");