C++ AUD_Reference::m_stop方法代码示例

void AUD_SoftwareDevice::mix(data_t* buffer, int length)
{
	m_buffer.assureSize(length * AUD_SAMPLE_SIZE(m_specs));

	lock();

	{
		AUD_Reference<AUD_SoftwareDevice::AUD_SoftwareHandle> sound;
		int len;
		int pos;
		bool eos;
		std::list<AUD_Reference<AUD_SoftwareDevice::AUD_SoftwareHandle> > stopSounds;
		std::list<AUD_Reference<AUD_SoftwareDevice::AUD_SoftwareHandle> > pauseSounds;
		sample_t* buf = m_buffer.getBuffer();

		m_mixer->clear(length);

		// for all sounds
		AUD_HandleIterator it = m_playingSounds.begin();
		while(it != m_playingSounds.end())
		{
			sound = *it;
			// increment the iterator to make sure it's valid,
			// in case the sound gets deleted after stopping
			++it;

			// get the buffer from the source
			pos = 0;
			len = length;

			// update 3D Info
			sound->update();

			sound->m_reader->read(len, eos, buf);

			// in case of looping
			while(pos + len < length && sound->m_loopcount && eos)
			{
				m_mixer->mix(buf, pos, len, sound->m_volume);

				pos += len;

				if(sound->m_loopcount > 0)
					sound->m_loopcount--;

				sound->m_reader->seek(0);

				len = length - pos;
				sound->m_reader->read(len, eos, buf);

				// prevent endless loop
				if(!len)
					break;
			}

			m_mixer->mix(buf, pos, len, sound->m_volume);

			// in case the end of the sound is reached
			if(eos && !sound->m_loopcount)
			{
				if(sound->m_stop)
					sound->m_stop(sound->m_stop_data);

				if(sound->m_keep)
					pauseSounds.push_back(sound);
				else
					stopSounds.push_back(sound);
			}
		}

		// superpose
		m_mixer->read(buffer, m_volume);

		// cleanup
		while(!stopSounds.empty())
		{
			sound = stopSounds.front();
			stopSounds.pop_front();
			sound->stop();
		}

		while(!pauseSounds.empty())
		{
			sound = pauseSounds.front();
			pauseSounds.pop_front();
			sound->pause();
		}
	}

	unlock();
}

//.........这里部分代码省略.........
								// read nothing?
								if(length == 0)
								{
									break;
								}

								// unqueue buffer
								alSourceUnqueueBuffers(sound->m_source, 1,
												&sound->m_buffers[sound->m_current]);
								ALenum err;
								if((err = alGetError()) != AL_NO_ERROR)
								{
									sound->m_eos = true;
									break;
								}

								// fill with new data
								alBufferData(sound->m_buffers[sound->m_current],
											 sound->m_format,
											 m_buffer.getBuffer(), length *
											 AUD_DEVICE_SAMPLE_SIZE(specs),
											 specs.rate);

								if((err = alGetError()) != AL_NO_ERROR)
								{
									sound->m_eos = true;
									break;
								}

								// and queue again
								alSourceQueueBuffers(sound->m_source, 1,
												&sound->m_buffers[sound->m_current]);
								if(alGetError() != AL_NO_ERROR)
								{
									sound->m_eos = true;
									break;
								}

								sound->m_current = (sound->m_current+1) %
												 AUD_OpenALHandle::CYCLE_BUFFERS;
							}
							else
								break;
						}
					}
				}

				// check if the sound has been stopped
				alGetSourcei(sound->m_source, AL_SOURCE_STATE, &info);

				if(info != AL_PLAYING)
				{
					// if it really stopped
					if(sound->m_eos)
					{
						if(sound->m_stop)
							sound->m_stop(sound->m_stop_data);

						// pause or
						if(sound->m_keep)
							pauseSounds.push_back(sound);
						// stop
						else
							stopSounds.push_back(sound);
					}
					// continue playing
					else
						alSourcePlay(sound->m_source);
				}
			}

			for(it = pauseSounds.begin(); it != pauseSounds.end(); it++)
				(*it)->pause();

			for(it = stopSounds.begin(); it != stopSounds.end(); it++)
				(*it)->stop();

			pauseSounds.clear();
			stopSounds.clear();

			alcProcessContext(m_context);
		}

		// stop thread
		if(m_playingSounds.empty() || (cerr != ALC_NO_ERROR))
		{
			m_playing = false;
			unlock();
			pthread_exit(NULL);
		}

		unlock();

#ifdef WIN32
		Sleep(20);
#else
		usleep(20000);
#endif
	}
}