129 lines
2.8 KiB
C++
129 lines
2.8 KiB
C++
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#include "Main.h"
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#include "AudioThread.h"
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#include "AudioLayer.h"
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#include <assert.h>
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extern unsigned long endTime;
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DWORD WINAPI AudThread_stub(void *ptr)
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{
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((AudioThread *)ptr)->AudThread();
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return 0;
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}
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void AudioThread::Start(WMHandler *_output)
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{
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assert(_output);
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output = _output;
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eof=0;
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ResetEvent(stopped);
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QueueUserAPC(MediaThread_StartAPC, thread, reinterpret_cast<ULONG_PTR>(static_cast<MediaThread *>(this)));
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}
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AudioThread::AudioThread(AudioLayer *audio) : output(0), audioLayer(audio)
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{
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DWORD id;
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thread = CreateThread(NULL, 256*1024, AudThread_stub, (void *)this, NULL, &id);
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SetThreadPriority(thread, AGAVE_API_CONFIG->GetInt(playbackConfigGroupGUID, L"priority", THREAD_PRIORITY_HIGHEST));
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}
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void AudioThread::AudThread()
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{
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int endbreak=0;
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while (true)
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{
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switch (WaitForSingleObjectEx(killEvent, wait, TRUE))
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{
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case WAIT_OBJECT_0:
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//StopAPC();
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return;
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case WAIT_TIMEOUT:
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{
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if (buffers.empty() || endbreak)
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{
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SetEvent(bufferFreed);
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if (eof==1)
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{
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eof=2;
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output->EndOfFile();
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}
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endbreak = 0;
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continue;
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}
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MediaBuffer *buffer = buffers.front();
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DWORD length;
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void *data;
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buffer->buffer->GetBufferAndLength((BYTE **)&data, &length);
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//if (out->CanWrite() >= length)
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{
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QWORD timestamptemp = buffer->timestamp/10000LL;
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DWORD timestamp = static_cast<DWORD>(timestamptemp);
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if (buffer->flags & WM_SF_DISCONTINUITY)
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{
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// fill with silence!
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int msToFill = timestamp - out->GetWrittenTime(); // TODO: maybe use microsoft's time resolution?
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if (msToFill > 0 && msToFill < 2000)
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{
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int bytes = audioLayer->AudioMillisecondsToBytes(msToFill);
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__int8 *zeroes = (__int8 *)calloc(bytes, 1);
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if (zeroes)
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{
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output->AudioDataReceived(zeroes, bytes, timestamp);
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free(zeroes);
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}
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else
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{
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out->Flush(timestamp);
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}
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}
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else if (msToFill > 0)
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{
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out->Flush(timestamp);
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}
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}
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output->AudioDataReceived(data, length, timestamp);
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// TODO seen a few crash reports failing around here
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// might be the cause of the random wma fails
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// but crash dump doesn't help too much afaict
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try {
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buffer->buffer->Release();
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delete buffer;
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} catch (...) {}
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//buffers.pop_front();
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if (buffers.size())
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{
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buffers.erase(buffers.begin());
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}
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unsigned long x = endTime;
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if (x && timestamp > x)
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{
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eof = 1; // reached the end baby....
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endbreak = 1;
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}
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}
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if (buffers.size() < config_audio_cache_frames)
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SetEvent(bufferFreed);
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}
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continue;
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default:
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continue;
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}
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}
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}
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void AudioThread::AddAPC(MediaBuffer *buffer)
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{
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OrderedInsert(buffer);
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if (buffers.size() >= config_audio_cache_frames)
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ResetEvent(bufferFreed);
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}
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