コード例 #1
0
        private int MillisecondsInSound(CachedSound sound)
        {
            int   sampleRatePerMillisecond = sound.WaveFormat.SampleRate / 1000;
            float milliseconds             = (sound.AudioData.Length / sampleRatePerMillisecond) / sound.WaveFormat.Channels;

            return((int)Math.Round(milliseconds));
        }
コード例 #2
0
        public int Read(float[] buffer, int offset, int count)
        {
            if (_soundIndex > _cachedSounds.Length - 1)
            {
                return(0);
            }

            long        positionThisBuffer = 0;
            CachedSound currentSound       = _cachedSounds[_soundIndex];

            // Copy sound
            var availableSamples = Math.Max(currentSound.AudioData.Length - _position, 0);
            var samplesToCopy    = Math.Min(availableSamples, count);

            if (availableSamples > 0)
            {
                Array.Copy(currentSound.AudioData, _position, buffer, offset, samplesToCopy);
                _position          += samplesToCopy;
                positionThisBuffer += samplesToCopy;
            }

            // If the sound ended
            if (availableSamples < count)
            {
                int  soundDuration         = MillisecondsInSound(currentSound);
                int  breakDuration         = Math.Max(_millisecondsPerSound - soundDuration, 0);
                int  samplesInBreak        = SamplesPerMillisecond(currentSound) * breakDuration;
                long samplesInBreakPassed  = _position - currentSound.AudioData.Length;
                long samplesInBreakLeft    = samplesInBreak - samplesInBreakPassed;
                long breakLengthThisBuffer = 0;
                if (samplesInBreakLeft > 0)
                {
                    breakLengthThisBuffer = Math.Min(samplesInBreakLeft, count - samplesToCopy);
                    Array.Clear(buffer, (int)(offset + positionThisBuffer), (int)breakLengthThisBuffer);
                    _position          += breakLengthThisBuffer;
                    positionThisBuffer += breakLengthThisBuffer;
                }

                if (breakLengthThisBuffer == samplesInBreakLeft)
                {
                    // go to next sample
                    _soundIndex++;
                    _position = 0;
                    // add bytes from the next sample
                    positionThisBuffer += Read(buffer, (int)(offset + positionThisBuffer), (int)(count - positionThisBuffer));
                }
            }

            return((int)positionThisBuffer);
        }
コード例 #3
0
        private int SamplesPerMillisecond(CachedSound sound)
        {
            int sampleRatePerMillisecond = sound.WaveFormat.SampleRate / 1000;

            return(sampleRatePerMillisecond * sound.WaveFormat.Channels);
        }
コード例 #4
0
 public void PlaySound(CachedSound sound)
 {
     AddMixerInput(new CachedSoundSampleProvider(sound));
 }
コード例 #5
0
 public CachedSoundSampleProvider(CachedSound cachedSound)
 {
     this._cachedSound = cachedSound;
 }