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extend sco demo with cvsd plc

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This commit is contained in:
Milanka Ringwald 2016-09-13 15:09:33 +02:00
parent 250a1e4ad9
commit 379d044e03
2 changed files with 44 additions and 8 deletions
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8
example/Makefile.inc
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@ -198,16 +198,16 @@ led_counter: ${CORE_OBJ} ${COMMON_OBJ} led_counter.c
gap_le_advertisements: ${CORE_OBJ} ${COMMON_OBJ} ad_parser.c gap_le_advertisements.c
${CC} $^ ${CFLAGS} ${LDFLAGS} -o $@
hsp_hs_demo: ${CORE_OBJ} ${COMMON_OBJ} ${SDP_CLIENT} ${SBC_DECODER_OBJ} ${SBC_ENCODER_OBJ} sco_demo_util.o hsp_hs.o hsp_hs_demo.c
hsp_hs_demo: ${CORE_OBJ} ${COMMON_OBJ} ${SDP_CLIENT} ${SBC_DECODER_OBJ} ${SBC_ENCODER_OBJ} btstack_cvsd_plc.o sco_demo_util.o hsp_hs.o hsp_hs_demo.c
${CC} $^ ${CFLAGS} ${LDFLAGS} -o $@
hsp_ag_demo: ${CORE_OBJ} ${COMMON_OBJ} ${SDP_CLIENT} ${SBC_DECODER_OBJ} ${SBC_ENCODER_OBJ} sco_demo_util.o hsp_ag.o hsp_ag_demo.c
hsp_ag_demo: ${CORE_OBJ} ${COMMON_OBJ} ${SDP_CLIENT} ${SBC_DECODER_OBJ} ${SBC_ENCODER_OBJ} btstack_cvsd_plc.o sco_demo_util.o hsp_ag.o hsp_ag_demo.c
${CC} $^ ${CFLAGS} ${LDFLAGS} -o $@
hfp_ag_demo: ${CORE_OBJ} ${COMMON_OBJ} ${SDP_CLIENT} ${SBC_DECODER_OBJ} ${SBC_ENCODER_OBJ} sco_demo_util.o hfp.o hfp_gsm_model.o hfp_ag.o hfp_ag_demo.c
hfp_ag_demo: ${CORE_OBJ} ${COMMON_OBJ} ${SDP_CLIENT} ${SBC_DECODER_OBJ} ${SBC_ENCODER_OBJ} btstack_cvsd_plc.o sco_demo_util.o hfp.o hfp_gsm_model.o hfp_ag.o hfp_ag_demo.c
${CC} $^ ${CFLAGS} ${LDFLAGS} -o $@
hfp_hf_demo: ${CORE_OBJ} ${COMMON_OBJ} ${SDP_CLIENT} ${SBC_DECODER_OBJ} ${SBC_ENCODER_OBJ} sco_demo_util.o hfp.o hfp_hf.o hfp_hf_demo.c
hfp_hf_demo: ${CORE_OBJ} ${COMMON_OBJ} ${SDP_CLIENT} ${SBC_DECODER_OBJ} ${SBC_ENCODER_OBJ} btstack_cvsd_plc.o sco_demo_util.o hfp.o hfp_hf.o hfp_hf_demo.c
${CC} $^ ${CFLAGS} ${LDFLAGS} -o $@
clean:

44
example/sco_demo_util.c
View File

@ -45,6 +45,7 @@
#include "sco_demo_util.h"
#include "btstack_debug.h"
#include "btstack_sbc.h"
#include "btstack_cvsd_plc.h"
#include "hfp_msbc.h"
#include "hfp.h"
@ -130,7 +131,8 @@ static int num_samples_to_write;
static wav_writer_state_t wav_writer_state;
static btstack_sbc_decoder_state_t decoder_state;
static btstack_cvsd_plc_t sbc_plc_state;
static void little_endian_fstore_16(FILE * file, uint16_t value){
uint8_t buf[2];
little_endian_store_32(buf, 0, value);
@ -246,6 +248,7 @@ static void sco_demo_init_mSBC(void){
}
static void sco_demo_init_CVSD(void){
btstack_cvsd_plc_init(&cvsd_plc_state);
wav_writer_state.wav_file = wav_init(SCO_WAV_FILENAME);
wav_writer_state.frame_count = 0;
wav_writer_state.total_num_samples = 0;
@ -269,18 +272,51 @@ static void sco_demo_receive_mSBC(uint8_t * packet, uint16_t size){
}
}
static int8_t audio_frame_out[24];
static int count_equal_bytes(uint8_t * packet, uint16_t size){
int count = 0;
int temp_count = 1;
int i;
for (i = 0; i < size-1; i++){
if (packet[i] == packet[i+1]){
temp_count++;
continue;
}
if (count < temp_count){
count = temp_count;
}
temp_count = 1;
}
if (temp_count > count + 1){
count = temp_count;
}
return count;
}
static void btstack_cvsd_handle_audio_frame(uint8_t * packet, uint16_t size){
if (count_equal_bytes(packet, size) > size/2){
btstack_cvsd_plc_bad_frame(&cvsd_plc_state, audio_frame_out);
} else {
btstack_cvsd_plc_good_frame(&cvsd_plc_state, packet, audio_frame_out);
}
}
static void sco_demo_receive_CVSD(uint8_t * packet, uint16_t size){
if (num_samples_to_write){
const int num_samples = size - 3;
const int samples_to_write = btstack_min(num_samples, num_samples_to_write);
btstack_cvsd_handle_audio_frame(packet+3,num_samples);
// convert 8 bit signed to 8 bit unsigned
int i;
for (i=0;i<samples_to_write;i++){
packet[3+i] += 128;
audio_frame_out[i] += 128;
}
wav_writer_state_t * writer_state = &wav_writer_state;
write_wav_data_uint8(writer_state->wav_file, samples_to_write, &packet[3]);
write_wav_data_uint8(writer_state->wav_file, samples_to_write, audio_frame_out);
num_samples_to_write -= samples_to_write;
if (num_samples_to_write == 0){
sco_demo_close();
@ -290,7 +326,7 @@ static void sco_demo_receive_CVSD(uint8_t * packet, uint16_t size){
// convert back
int i;
for (i=0;i<samples_to_write;i++){
packet[3+i] += 128;
audio_frame_out[i] += 128;
}
}
}