mirror/btstack
1
0
Fork 0
mirror of https://github.com/bluekitchen/btstack.git synced 2025-01-03 23:47:08 +00:00
Code Issues Packages Projects Releases Wiki Activity

example/sco_demo_util: add modplayer as SCO_DEMO_MODE_MODPLAYER

Browse Source
This commit is contained in:
Matthias Ringwald 2023-03-01 12:38:29 +01:00
parent 9ad691b0cb
commit 1762039c2c
1 changed files with 41 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

41
example/sco_demo_util.c
View File

@ -65,6 +65,7 @@
// test modes
#define SCO_DEMO_MODE_SINE 0
#define SCO_DEMO_MODE_MICROPHONE 1
#define SCO_DEMO_MODE_MODPLAYER 2
// SCO demo configuration
#define SCO_DEMO_MODE SCO_DEMO_MODE_MICROPHONE
@ -114,6 +115,13 @@ static int audio_input_paused = 0;
static uint8_t audio_input_ring_buffer_storage[2 * PREBUFFER_BYTES_MAX];
static btstack_ring_buffer_t audio_input_ring_buffer;
// mod player
#if SCO_DEMO_MODE == SCO_DEMO_MODE_MODPLAYER
#include "hxcmod.h"
#include "mods/mod.h"
static modcontext mod_context;
#endif
static int count_sent = 0;
static int count_received = 0;
@ -170,6 +178,26 @@ static void sco_demo_sine_wave_host_endian(uint16_t num_samples, int16_t * data)
}
#endif
// Mod Player
#if SCO_DEMO_MODE == SCO_DEMO_MODE_MODPLAYER
#define NUM_SAMPLES_GENERATOR_BUFFER 30
static void sco_demo_modplayer(uint16_t num_samples, int16_t * data){
// mix down stereo
signed short samples[NUM_SAMPLES_GENERATOR_BUFFER * 2];
while (num_samples > 0){
uint16_t next_samples = btstack_min(num_samples, NUM_SAMPLES_GENERATOR_BUFFER);
hxcmod_fillbuffer(&mod_context, (unsigned short *) samples, next_samples, NULL);
num_samples -= next_samples;
uint16_t i;
for (i=0;i<next_samples;i++){
int32_t left = samples[2*i + 0];
int32_t right = samples[2*i + 1];
data[i] = (int16_t)((left + right) / 2);
}
}
}
#endif
// Audio Playback / Recording
static void audio_playback_callback(int16_t * buffer, uint16_t num_samples){
@ -434,6 +462,12 @@ void sco_demo_init(void){
// Set SCO for CVSD (mSBC or other codecs automatically use 8-bit transparent mode)
hci_set_sco_voice_setting(0x60); // linear, unsigned, 16-bit, CVSD
#if SCO_DEMO_MODE == SCO_DEMO_MODE_MODPLAYER
// init mod
int hxcmod_initialized = hxcmod_init(&mod_context);
btstack_assert(hxcmod_initialized != 0);
#endif
}
void sco_demo_set_codec(uint8_t negotiated_codec){
@ -466,6 +500,13 @@ void sco_demo_set_codec(uint8_t negotiated_codec){
sine_wave_steps_per_sample = SINE_WAVE_SAMPLE_RATE / codec_current->sample_rate;
sco_demo_audio_generator = &sco_demo_sine_wave_host_endian;
#endif
#if SCO_DEMO_MODE == SCO_DEMO_MODE_MODPLAYER
// load mod
hxcmod_setcfg(&mod_context, codec_current->sample_rate, 16, 1, 1, 1);
hxcmod_load(&mod_context, (void *) &mod_data, mod_len);
sco_demo_audio_generator = &sco_demo_modplayer;
#endif
}
void sco_demo_receive(uint8_t * packet, uint16_t size){