mirror/btstack
1
0
Fork 0
mirror of https://github.com/bluekitchen/btstack.git synced 2025-03-29 22:20:37 +00:00
Code Issues Packages Projects Releases Wiki Activity

btstack_sbc_decoder_bluedroid: extract btstack_sbc_decoder_bluedroid_simulate_error and btstack_sbc_decoder_insert_missing_frames

Browse Source
This commit is contained in:
Matthias Ringwald 2020-04-09 15:46:06 +02:00
parent 371c4c5822
commit 5c7e2c7474
1 changed files with 59 additions and 71 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

130
src/classic/btstack_sbc_decoder_bluedroid.c
View File

@ -208,6 +208,17 @@ static void append_received_sbc_data(bludroid_decoder_state_t * state, uint8_t *
state->bytes_in_frame_buffer += size;
}
void btstack_sbc_decoder_bluedroid_simulate_error(const OI_BYTE *frame_data) {
static int frame_count = 0;
if (corrupt_frame_period > 0){
frame_count++;
if ((frame_count % corrupt_frame_period) == 0){
*(uint8_t*)&frame_data[5] = 0;
frame_count = 0;
}
}
}
static void btstack_sbc_decoder_process_sbc_data(btstack_sbc_decoder_state_t * state, uint8_t * buffer, int size){
bludroid_decoder_state_t * decoder_state = (bludroid_decoder_state_t*)state->decoder_state;
@ -234,17 +245,9 @@ static void btstack_sbc_decoder_process_sbc_data(btstack_sbc_decoder_state_t * s
decoder_state->pcm_plc_data,
&(decoder_state->pcm_bytes));
uint16_t bytes_processed = bytes_in_frame_buffer_before_decoding - frame_data_len;
// testing only - corrupt frame periodically
static int frame_count = 0;
if (corrupt_frame_period > 0){
frame_count++;
if ((frame_count % corrupt_frame_period) == 0){
*(uint8_t*)&frame_data[5] = 0;
frame_count = 0;
}
}
// testing only - corrupt frame periodically
btstack_sbc_decoder_bluedroid_simulate_error(frame_data);
// Handle decoding result.
switch(status){
@ -319,52 +322,58 @@ static void btstack_sbc_decoder_process_sbc_data(btstack_sbc_decoder_state_t * s
}
void btstack_sbc_decoder_insert_missing_frames(btstack_sbc_decoder_state_t *state) {
bludroid_decoder_state_t * decoder_state = (bludroid_decoder_state_t*)state->decoder_state;
const unsigned int MSBC_FRAME_SIZE = 60;
while (decoder_state->first_good_frame_found && (decoder_state->msbc_bad_bytes >= MSBC_FRAME_SIZE)){
decoder_state->msbc_bad_bytes -= MSBC_FRAME_SIZE;
state->bad_frames_nr++;
// prepare zero signal frame
const OI_BYTE * frame_data = btstack_sbc_plc_zero_signal_frame();
OI_UINT32 bytes_in_frame_buffer = 57;
// log_info("Trace bad frame generator, bad bytes %u", decoder_state->msbc_bad_bytes);
OI_STATUS status = status = OI_CODEC_SBC_DecodeFrame(&(decoder_state->decoder_context),
&frame_data,
&bytes_in_frame_buffer,
decoder_state->pcm_plc_data,
&(decoder_state->pcm_bytes));
if (status) {
log_error("SBC decoder for ZIR frame: error %d\n", status);
}
if (bytes_in_frame_buffer){
log_error("PLC: not all bytes of zero frame processed, left %u\n", bytes_in_frame_buffer);
}
if (plc_enabled) {
btstack_sbc_plc_bad_frame(&state->plc_state, decoder_state->pcm_plc_data, decoder_state->pcm_data);
} else {
(void)memcpy(decoder_state->pcm_data,
decoder_state->pcm_plc_data,
decoder_state->pcm_bytes);
}
state->handle_pcm_data(decoder_state->pcm_data,
btstack_sbc_decoder_num_samples_per_frame(state),
btstack_sbc_decoder_num_channels(state),
btstack_sbc_decoder_sample_rate(state), state->context);
}
}
static void btstack_sbc_decoder_process_msbc_data(btstack_sbc_decoder_state_t * state, int packet_status_flag, uint8_t * buffer, int size){
bludroid_decoder_state_t * decoder_state = (bludroid_decoder_state_t*)state->decoder_state;
int input_bytes_to_process = size;
unsigned int MSBC_FRAME_SIZE = 60;
const unsigned int MSBC_FRAME_SIZE = 60;
while (input_bytes_to_process > 0){
// Use PLC to insert missing frames (after first sync found)
while (decoder_state->first_good_frame_found && (decoder_state->msbc_bad_bytes >= MSBC_FRAME_SIZE)){
decoder_state->msbc_bad_bytes -= MSBC_FRAME_SIZE;
state->bad_frames_nr++;
// prepare zero signal frame
const OI_BYTE * frame_data = btstack_sbc_plc_zero_signal_frame();
OI_UINT32 bytes_in_frame_buffer = 57;
// log_info("Trace bad frame generator, bad bytes %u", decoder_state->msbc_bad_bytes);
OI_STATUS status = status = OI_CODEC_SBC_DecodeFrame(&(decoder_state->decoder_context),
&frame_data,
&bytes_in_frame_buffer,
decoder_state->pcm_plc_data,
&(decoder_state->pcm_bytes));
if (status) {
log_error("SBC decoder for ZIR frame: error %d\n", status);
}
if (bytes_in_frame_buffer){
log_error("PLC: not all bytes of zero frame processed, left %u\n", bytes_in_frame_buffer);
}
if (plc_enabled) {
btstack_sbc_plc_bad_frame(&state->plc_state, decoder_state->pcm_plc_data, decoder_state->pcm_data);
} else {
(void)memcpy(decoder_state->pcm_data,
decoder_state->pcm_plc_data,
decoder_state->pcm_bytes);
}
state->handle_pcm_data(decoder_state->pcm_data,
btstack_sbc_decoder_num_samples_per_frame(state),
btstack_sbc_decoder_num_channels(state),
btstack_sbc_decoder_sample_rate(state), state->context);
}
btstack_sbc_decoder_insert_missing_frames(state);
// fill buffer with new data
int bytes_missing_for_complete_msbc_frame = MSBC_FRAME_SIZE - decoder_state->bytes_in_frame_buffer;
@ -383,15 +392,7 @@ static void btstack_sbc_decoder_process_msbc_data(btstack_sbc_decoder_state_t *
const OI_BYTE *frame_data = decoder_state->frame_buffer;
// testing only - corrupt frame periodically
static int frame_count = 0;
if (corrupt_frame_period > 0){
frame_count++;
if ((frame_count % corrupt_frame_period) == 0){
*(uint8_t*)&frame_data[5] = 0;
frame_count = 0;
}
}
btstack_sbc_decoder_bluedroid_simulate_error(frame_data);
// assert frame looks like this: 01 x8 AD [rest of frame 56 bytes] 00
int h2_syncword = 0;
@ -487,19 +488,6 @@ static void btstack_sbc_decoder_process_msbc_data(btstack_sbc_decoder_state_t *
state->good_frames_nr++;
continue;
case OI_CODEC_SBC_NOT_ENOUGH_HEADER_DATA:
log_info("OI_CODEC_SBC_NOT_ENOUGH_HEADER_DATA");
break;
case OI_CODEC_SBC_NOT_ENOUGH_BODY_DATA:
log_debug("OI_CODEC_SBC_NOT_ENOUGH_BODY_DATA");
break;
case OI_CODEC_SBC_NOT_ENOUGH_AUDIO_DATA:
log_info("OI_CODEC_SBC_NOT_ENOUGH_AUDIO_DATA");
break;
case OI_CODEC_SBC_NO_SYNCWORD:
log_info("OI_CODEC_SBC_NO_SYNCWORD");
break;
case OI_CODEC_SBC_CHECKSUM_MISMATCH:
// The next frame is somehow corrupt.
log_debug("OI_CODEC_SBC_CHECKSUM_MISMATCH");