void bgav_rtp_packet_buffer_destroy(bgav_rtp_packet_buffer_t * b)
{
pthread_mutex_destroy(&b->read_mutex);
pthread_mutex_destroy(&b->write_mutex);
pthread_mutex_destroy(&b->eof_mutex);
if(b->stats.timer) gavl_timer_destroy(b->stats.timer);
free_packets(b->read_packets);
free_packets(b->write_packets);
free_packets(b->read_packet);
free_packets(b->write_packet);
free(b);
}
static bool init_connect(struct rtmp_stream *stream)
{
obs_service_t *service;
obs_data_t *settings;
if (stopping(stream))
pthread_join(stream->send_thread, NULL);
free_packets(stream);
service = obs_output_get_service(stream->output);
if (!service)
return false;
os_atomic_set_bool(&stream->disconnected, false);
stream->total_bytes_sent = 0;
stream->dropped_frames = 0;
stream->min_drop_dts_usec= 0;
stream->min_priority = 0;
settings = obs_output_get_settings(stream->output);
dstr_copy(&stream->path, obs_service_get_url(service));
dstr_copy(&stream->key, obs_service_get_key(service));
dstr_copy(&stream->username, obs_service_get_username(service));
dstr_copy(&stream->password, obs_service_get_password(service));
stream->drop_threshold_usec =
(int64_t)obs_data_get_int(settings, OPT_DROP_THRESHOLD) * 1000;
stream->max_shutdown_time_sec =
(int)obs_data_get_int(settings, OPT_MAX_SHUTDOWN_TIME_SEC);
obs_data_release(settings);
return true;
}
void obs_output_destroy(obs_output_t output)
{
if (output) {
obs_context_data_remove(&output->context);
if (output->valid && output->active)
obs_output_stop(output);
if (output->service)
output->service->output = NULL;
free_packets(output);
if (output->context.data)
output->info.destroy(output->context.data);
if (output->video_encoder) {
obs_encoder_remove_output(output->video_encoder,
output);
}
if (output->audio_encoder) {
obs_encoder_remove_output(output->audio_encoder,
output);
}
pthread_mutex_destroy(&output->interleaved_mutex);
os_event_destroy(output->reconnect_stop_event);
obs_context_data_free(&output->context);
bfree(output);
}
}
static void rtmp_stream_destroy(void *data)
{
struct rtmp_stream *stream = data;
if (stopping(stream) && !connecting(stream)) {
pthread_join(stream->send_thread, NULL);
} else if (connecting(stream) || active(stream)) {
if (stream->connecting)
pthread_join(stream->connect_thread, NULL);
os_event_signal(stream->stop_event);
if (active(stream)) {
os_sem_post(stream->send_sem);
obs_output_end_data_capture(stream->output);
pthread_join(stream->send_thread, NULL);
}
}
if (stream) {
free_packets(stream);
dstr_free(&stream->path);
dstr_free(&stream->key);
dstr_free(&stream->username);
dstr_free(&stream->password);
dstr_free(&stream->encoder_name);
os_event_destroy(stream->stop_event);
os_sem_destroy(stream->send_sem);
pthread_mutex_destroy(&stream->packets_mutex);
circlebuf_free(&stream->packets);
bfree(stream);
}
}
static void *send_thread(void *data)
{
struct rtmp_stream *stream = data;
bool disconnected = false;
while (os_sem_wait(stream->send_sem) == 0) {
struct encoder_packet packet;
if (os_event_try(stream->stop_event) != EAGAIN)
break;
if (!get_next_packet(stream, &packet))
continue;
if (send_packet(stream, &packet, false) < 0) {
disconnected = true;
break;
}
}
if (!disconnected && !send_remaining_packets(stream))
disconnected = true;
if (disconnected) {
blog(LOG_INFO, "Disconnected from %s", stream->path.array);
free_packets(stream);
}
if (os_event_try(stream->stop_event) == EAGAIN) {
pthread_detach(stream->send_thread);
obs_output_signal_stop(stream->output, OBS_OUTPUT_DISCONNECTED);
}
stream->active = false;
return NULL;
}
static void hook_data_capture(struct obs_output *output, bool encoded,
bool has_video, bool has_audio)
{
void (*encoded_callback)(void *data, struct encoder_packet *packet);
if (encoded) {
output->received_video = false;
output->received_video = false;
output->highest_audio_ts = 0;
output->highest_video_ts = 0;
free_packets(output);
encoded_callback = (has_video && has_audio) ?
interleave_packets : default_encoded_callback;
if (has_video)
obs_encoder_start(output->video_encoder,
encoded_callback, output);
if (has_audio)
obs_encoder_start(output->audio_encoder,
encoded_callback, output);
} else {
if (has_video)
video_output_connect(output->video,
get_video_conversion(output),
default_raw_video_callback, output);
if (has_audio)
audio_output_connect(output->audio,
get_audio_conversion(output),
output->info.raw_audio,
output->context.data);
}
}
static void *send_thread(void *data)
{
struct rtmp_stream *stream = data;
os_set_thread_name("rtmp-stream: send_thread");
while (os_sem_wait(stream->send_sem) == 0) {
struct encoder_packet packet;
if (stopping(stream) && stream->stop_ts == 0) {
break;
}
if (!get_next_packet(stream, &packet))
continue;
if (stopping(stream)) {
if (can_shutdown_stream(stream, &packet)) {
obs_free_encoder_packet(&packet);
break;
}
}
if (!stream->sent_headers) {
if (!send_headers(stream)) {
os_atomic_set_bool(&stream->disconnected, true);
break;
}
}
if (send_packet(stream, &packet, false, packet.track_idx) < 0) {
os_atomic_set_bool(&stream->disconnected, true);
break;
}
}
if (disconnected(stream)) {
info("Disconnected from %s", stream->path.array);
} else {
info("User stopped the stream");
}
RTMP_Close(&stream->rtmp);
if (!stopping(stream)) {
pthread_detach(stream->send_thread);
obs_output_signal_stop(stream->output, OBS_OUTPUT_DISCONNECTED);
} else {
obs_output_end_data_capture(stream->output);
}
free_packets(stream);
os_event_reset(stream->stop_event);
os_atomic_set_bool(&stream->active, false);
stream->sent_headers = false;
return NULL;
}
void
gsq_source_free (GsqQuerier *querier)
{
Private *priv = gsq_querier_get_pdata (querier);
if (priv->packets) {
free_packets (priv->packets);
g_array_free (priv->packets, TRUE);
}
g_slice_free (Private, priv);
}
static bool init_connect(struct rtmp_stream *stream)
{
obs_service_t *service;
obs_data_t *settings;
const char *bind_ip;
int64_t drop_p;
int64_t drop_b;
if (stopping(stream)) {
pthread_join(stream->send_thread, NULL);
}
free_packets(stream);
service = obs_output_get_service(stream->output);
if (!service)
return false;
os_atomic_set_bool(&stream->disconnected, false);
stream->total_bytes_sent = 0;
stream->dropped_frames = 0;
stream->min_priority = 0;
settings = obs_output_get_settings(stream->output);
dstr_copy(&stream->path, obs_service_get_url(service));
dstr_copy(&stream->key, obs_service_get_key(service));
dstr_copy(&stream->username, obs_service_get_username(service));
dstr_copy(&stream->password, obs_service_get_password(service));
dstr_depad(&stream->path);
dstr_depad(&stream->key);
drop_b = (int64_t)obs_data_get_int(settings, OPT_DROP_THRESHOLD);
drop_p = (int64_t)obs_data_get_int(settings, OPT_PFRAME_DROP_THRESHOLD);
stream->max_shutdown_time_sec =
(int)obs_data_get_int(settings, OPT_MAX_SHUTDOWN_TIME_SEC);
if (drop_p < (drop_b + 200))
drop_p = drop_b + 200;
stream->drop_threshold_usec = 1000 * drop_b;
stream->pframe_drop_threshold_usec = 1000 * drop_p;
bind_ip = obs_data_get_string(settings, OPT_BIND_IP);
dstr_copy(&stream->bind_ip, bind_ip);
stream->new_socket_loop = obs_data_get_bool(settings,
OPT_NEWSOCKETLOOP_ENABLED);
stream->low_latency_mode = obs_data_get_bool(settings,
OPT_LOWLATENCY_ENABLED);
obs_data_release(settings);
return true;
}
static void reset_packet_data(obs_output_t *output)
{
output->received_audio = false;
output->received_video = false;
output->highest_audio_ts = 0;
output->highest_video_ts = 0;
output->video_offset = 0;
for (size_t i = 0; i < MAX_AUDIO_MIXES; i++)
output->audio_offsets[0] = 0;
free_packets(output);
}
static void rtmp_stream_destroy(void *data)
{
struct rtmp_stream *stream = data;
if (stopping(stream) && !connecting(stream)) {
pthread_join(stream->send_thread, NULL);
} else if (connecting(stream) || active(stream)) {
if (stream->connecting)
pthread_join(stream->connect_thread, NULL);
stream->stop_ts = 0;
os_event_signal(stream->stop_event);
if (active(stream)) {
os_sem_post(stream->send_sem);
obs_output_end_data_capture(stream->output);
pthread_join(stream->send_thread, NULL);
}
}
free_packets(stream);
dstr_free(&stream->path);
dstr_free(&stream->key);
dstr_free(&stream->username);
dstr_free(&stream->password);
dstr_free(&stream->encoder_name);
dstr_free(&stream->bind_ip);
os_event_destroy(stream->stop_event);
os_sem_destroy(stream->send_sem);
pthread_mutex_destroy(&stream->packets_mutex);
circlebuf_free(&stream->packets);
#ifdef TEST_FRAMEDROPS
circlebuf_free(&stream->droptest_info);
#endif
os_event_destroy(stream->buffer_space_available_event);
os_event_destroy(stream->buffer_has_data_event);
os_event_destroy(stream->socket_available_event);
os_event_destroy(stream->send_thread_signaled_exit);
pthread_mutex_destroy(&stream->write_buf_mutex);
if (stream->write_buf)
bfree(stream->write_buf);
bfree(stream);
}
void obs_output_destroy(obs_output_t *output)
{
if (output) {
obs_context_data_remove(&output->context);
blog(LOG_INFO, "output '%s' destroyed", output->context.name);
if (output->valid && active(output))
obs_output_actual_stop(output, true, 0);
os_event_wait(output->stopping_event);
if (data_capture_ending(output))
pthread_join(output->end_data_capture_thread, NULL);
if (output->service)
output->service->output = NULL;
if (output->context.data)
output->info.destroy(output->context.data);
free_packets(output);
if (output->video_encoder) {
obs_encoder_remove_output(output->video_encoder,
output);
}
for (size_t i = 0; i < MAX_AUDIO_MIXES; i++) {
if (output->audio_encoders[i]) {
obs_encoder_remove_output(
output->audio_encoders[i],
output);
}
}
os_event_destroy(output->stopping_event);
pthread_mutex_destroy(&output->interleaved_mutex);
pthread_mutex_destroy(&output->delay_mutex);
os_event_destroy(output->reconnect_stop_event);
obs_context_data_free(&output->context);
circlebuf_free(&output->delay_data);
if (output->owns_info_id)
bfree((void*)output->info.id);
bfree(output);
}
}
static void rtmp_stream_destroy(void *data)
{
struct rtmp_stream *stream = data;
if (stream->active)
rtmp_stream_stop(data);
if (stream) {
free_packets(stream);
dstr_free(&stream->path);
dstr_free(&stream->key);
dstr_free(&stream->username);
dstr_free(&stream->password);
os_event_destroy(stream->stop_event);
os_sem_destroy(stream->send_sem);
pthread_mutex_destroy(&stream->packets_mutex);
circlebuf_free(&stream->packets);
bfree(stream);
}
}
size_t transmit(quicly_conn_t *src, quicly_conn_t *dst)
{
quicly_raw_packet_t *packets[32];
size_t num_packets, i;
quicly_decoded_packet_t decoded[32];
int ret;
num_packets = sizeof(packets) / sizeof(packets[0]);
ret = quicly_send(src, packets, &num_packets);
ok(ret == 0);
if (num_packets != 0) {
decode_packets(decoded, packets, num_packets);
for (i = 0; i != num_packets; ++i) {
ret = quicly_receive(dst, decoded + i);
ok(ret == 0);
}
free_packets(packets, num_packets);
}
return num_packets;
}
void whohas_flooding(struct Request* request){
int packet_count = 0;
struct packet* packets = make_packet(WHOHAS, NULL, NULL, -1, 0, 0, NULL, &packet_count, request);
int i;
for(i=0;i<packet_count;i++){
print_packet(&packets[i]);
}
if(packet_count!=0){
struct bt_peer_s* peer = config.peers;
while(peer!=NULL) {
if(peer->id==config.identity){
peer = peer->next;
}
else{
send_whohas_packet_to_all(packets, packet_count, sock, (struct sockaddr*)&peer->addr);
peer = peer->next;
}
}
}
free_packets(packets, packet_count);
return;
}
static void hook_data_capture(struct obs_output *output, bool encoded,
bool has_video, bool has_audio)
{
encoded_callback_t encoded_callback;
if (encoded) {
output->received_audio = false;
output->received_video = false;
output->highest_audio_ts = 0;
output->highest_video_ts = 0;
output->video_offset = 0;
for (size_t i = 0; i < MAX_AUDIO_MIXES; i++)
output->audio_offsets[0] = 0;
free_packets(output);
encoded_callback = (has_video && has_audio) ?
interleave_packets : default_encoded_callback;
if (has_video)
obs_encoder_start(output->video_encoder,
encoded_callback, output);
if (has_audio)
start_audio_encoders(output, encoded_callback);
} else {
if (has_video)
video_output_connect(output->video,
get_video_conversion(output),
default_raw_video_callback, output);
if (has_audio)
audio_output_connect(output->audio, output->mixer_idx,
get_audio_conversion(output),
default_raw_audio_callback, output);
}
}
void obs_output_destroy(obs_output_t *output)
{
if (output) {
obs_context_data_remove(&output->context);
blog(LOG_INFO, "output '%s' destroyed", output->context.name);
if (output->valid && output->active)
obs_output_stop(output);
if (output->service)
output->service->output = NULL;
free_packets(output);
if (output->context.data)
output->info.destroy(output->context.data);
if (output->video_encoder) {
obs_encoder_remove_output(output->video_encoder,
output);
}
for (size_t i = 0; i < MAX_AUDIO_MIXES; i++) {
if (output->audio_encoders[i]) {
obs_encoder_remove_output(
output->audio_encoders[i],
output);
}
}
pthread_mutex_destroy(&output->interleaved_mutex);
os_event_destroy(output->reconnect_stop_event);
obs_context_data_free(&output->context);
bfree(output);
}
}
// Besides passing in type, also pass some necessary fields as parameters
// Other fields in the parameters can be arbitrary values
// To make a WHOHAS packet, pass in the request and *packet_count
// To make a IHAVE packet, pass in a WHOHAS packet as packet_in
// To make a Get packet, pass in p_chunk
//
struct packet* make_packet(unsigned char packet_type, struct Chunk* p_chunk, char* data, int data_size, int seq_number, int ack_number, struct packet* packet_in, int* packet_count, struct Request* request){
unsigned char i = 0;
int j = 0;
int unfinished_chunk_count = 0;
struct packet* packet = NULL;
switch(packet_type){
case WHOHAS:
for(i=0;i<request->chunk_number;i++){
// TODO: here may need to change add more state to chunks
if(request->chunks[i].state == NOT_STARTED){
unfinished_chunk_count++;
}
}
if(unfinished_chunk_count%CHUNK_PER_PACKET==0){
*packet_count = unfinished_chunk_count/CHUNK_PER_PACKET;
}
else{
*packet_count = unfinished_chunk_count/CHUNK_PER_PACKET + 1;
}
struct packet* packets = (struct packet*)malloc(sizeof(struct packet)* (*packet_count));
memset(packets, 0, sizeof(struct packet)* (*packet_count));
if(unfinished_chunk_count==0){
free_packets(packets, *packet_count);
packets = NULL;
}
int current_chunk_index = 0;
for(j=0;j<(*packet_count);j++){
unsigned char chunk_count = CHUNK_PER_PACKET;
if(*packet_count <= j+1){
chunk_count = (unsigned char)(unfinished_chunk_count - j*CHUNK_PER_PACKET);
}
fill_header(&packets[j].header, WHOHAS, chunk_count*SHA1_HASH_SIZE+HEADER_LENGTH+CHUNK_NUMBER_AND_PADDING_SIZE, 0, 0);
*(packets[j].payload) = chunk_count;
int k=0;
for(k=0;k<chunk_count;k++){
for(; current_chunk_index<request->chunk_number;current_chunk_index++){
if(request->chunks[current_chunk_index].state==NOT_STARTED){
memcpy(packets[j].payload+CHUNK_NUMBER_AND_PADDING_SIZE+k*SHA1_HASH_SIZE,(request->chunks)[current_chunk_index].hash, SHA1_HASH_SIZE);
current_chunk_index++;
break;
}
}
}
}
return packets;
case IHAVE:
packet = (struct packet*)malloc(sizeof(struct packet));
memset(packet, 0, sizeof(struct packet));
unsigned char chunk_count = *((char*)packet_in+16);
unsigned char count_ihave = 0;
for(i=0;i<chunk_count;i++){
uint8_t* hash = (uint8_t*)((char*)packet_in+16+CHUNK_NUMBER_AND_PADDING_SIZE+i*SHA1_HASH_SIZE);
if(find_chunk(hash)>0){
memcpy(packet->payload+CHUNK_NUMBER_AND_PADDING_SIZE+count_ihave*SHA1_HASH_SIZE, hash, SHA1_HASH_SIZE);
count_ihave++;
}
}
if(count_ihave==0){
free_packet(packet);
packet = NULL;
}
else{
fill_header(&(packet->header), IHAVE, count_ihave*SHA1_HASH_SIZE+HEADER_LENGTH+CHUNK_NUMBER_AND_PADDING_SIZE, 0, 0);
// *(packet->payload) = count_ihave;
memcpy(packet->payload, &count_ihave, 1);
}
break;
case GET:
packet = (struct packet*)malloc(sizeof(struct packet));
memset(packet, 0, sizeof(struct packet));
fill_header(&packet->header, GET, SHA1_HASH_SIZE+HEADER_LENGTH, 0, 0);
memcpy(packet->payload, p_chunk->hash, SHA1_HASH_SIZE);
break;
case DATA:
packet = (struct packet*)malloc(sizeof(struct packet));
memset(packet, 0, sizeof(struct packet));
fill_header(&packet->header, DATA, data_size+HEADER_LENGTH, seq_number, 0);
memcpy(packet->payload, data, data_size);
break;
case ACK:
packet = (struct packet*)malloc(sizeof(struct packet));
memset(packet, 0, sizeof(struct packet));
fill_header(&packet->header, ACK, HEADER_LENGTH, 0, ack_number);
break;
default:
printf("Should not happen in make_packet\n");
break;
}
return packet;
}