//=================================================================================================
void eve::thr::profiler::get_sample(eve::thr::profiler_sample & p_sample) const noexcept
{
p_sample.name_ = get_name();
p_sample.sample_time_ = get_sample_time();
p_sample.time_elapsed_ = get_elapsed_time();
p_sample.clock_cycle_num_ = get_clock_cycle_num();
}
static inline void mix_child(obs_source_t *transition, float *out, float *in,
size_t count, size_t sample_rate, uint64_t ts,
obs_transition_audio_mix_callback_t mix)
{
void *context_data = transition->context.data;
for (size_t i = 0; i < count; i++) {
float t = get_sample_time(transition, sample_rate, i, ts);
out[i] += in[i] * mix(context_data, t);
}
}
void copy_sample_data(FILE *fin,
const uint32_t chunk_index, //[0, end) 标识为第几个Chunk
std::string name,
int num,
CMp4_root_box root,
int& nSampleId
)
{
_fseeki64(fin, root.co[num].chunk_offset_from_file_begin[chunk_index],
SEEK_SET);
//获取当前chunk中有多少个sample
uint32_t sample_num_in_cur_chunk_ = get_sample_num_in_cur_chunk(root.sc[num], chunk_index+1); //@a mark获取chunk中sample的数目
uint32_t sample_index_ = get_sample_index(root.sc[num], chunk_index+1);//chunk中第一个sample的序号
unsigned int cur=_ftelli64(fin);
for(int i = 0; i < sample_num_in_cur_chunk_; i++)
{
uint32_t sample_size_ = get_sample_size(root.sz[num], sample_index_+i);//获取当前sample的大小
_fseeki64(fin,cur,SEEK_SET);
char *ptr=new char [sample_size_];
fread(ptr, sample_size_, 1, fin);
uint32_t sample_time = get_sample_time(root.ts[num], nSampleId );
char char_num[260];
sprintf(char_num, "%u_%u", nSampleId, sample_time);
//sprintf(char_num, "E:/%s/%u_%u", name.c_str(),nSampleId,sample_time);
FILE *fout = fopen(std::string(name + "//" + name + char_num).c_str(), "w");
if(fout == (FILE*)0){
printf("error\n");
std::exit(-1);
}
//写一帧数据 --- 可以直接进行网络推送
fwrite(ptr, sample_size_, 1, fout);
delete [] ptr;
cur+=sample_size_;
nSampleId++;
fclose(fout);
}
}
//=================================================================================================
void eve::thr::profiler::store_sample(void)
{
eve::thr::profiler_sample s;
s.name_ = get_name();
s.sample_time_ = get_sample_time();
s.time_elapsed_ = get_elapsed_time();
s.clock_cycle_num_ = get_clock_cycle_num();
// FIFO storage.
if (samples_.size() > samples_num_)
{
samples_.erase(samples_.begin());
}
samples_.emplace_back(std::move(s));
}
/**
* Callback for pulse which gets executed when new audio data is available
*
* @warning The function may be called even after disconnecting the stream
*/
static void pulse_stream_read(pa_stream *p, size_t nbytes, void *userdata)
{
UNUSED_PARAMETER(p);
UNUSED_PARAMETER(nbytes);
PULSE_DATA(userdata);
const void *frames;
size_t bytes;
if (!data->stream)
goto exit;
pa_stream_peek(data->stream, &frames, &bytes);
// check if we got data
if (!bytes)
goto exit;
if (!frames) {
blog(LOG_ERROR, "Got audio hole of %u bytes",
(unsigned int) bytes);
pa_stream_drop(data->stream);
goto exit;
}
struct obs_source_audio out;
out.speakers = data->speakers;
out.samples_per_sec = data->samples_per_sec;
out.format = pulse_to_obs_audio_format(data->format);
out.data[0] = (uint8_t *) frames;
out.frames = bytes / data->bytes_per_frame;
out.timestamp = get_sample_time(out.frames,
out.samples_per_sec);
if (!data->first_ts)
data->first_ts = out.timestamp + STARTUP_TIMEOUT_NS;
if (out.timestamp > data->first_ts)
obs_source_output_audio(data->source, &out);
data->packets++;
data->frames += out.frames;
pa_stream_drop(data->stream);
exit:
pulse_signal(0);
}