public static void Merge(AudioFrame outFrame, params AudioFrame[] inFrames)
{
if (inFrames.Length == 0)
{
return;
}
var format = inFrames[0].format;
for (int i = 1; i < inFrames.Length; i++)
{
if (format != inFrames[i].format)
{
throw new ArgumentException($"{nameof(inFrames)}的所有元素的{nameof(Format)}必须一致", nameof(inFrames));
}
}
int outSampleCount = inFrames.Sum(frame => frame.sampleCount);
outFrame.format = format;
outFrame.Resize(outSampleCount);
int offset = 0;
for (int i = 0; i < inFrames.Length; i++)
{
FF.av_samples_copy(outFrame.datas, inFrames[i].datas, offset, 0, inFrames[i].sampleCount, format.Channels, format.SampleFormat);
offset += inFrames[i].sampleCount;
}
}
internal override void UpdateFromNative()
{
int sampleCount = frame->NbSamples;
Resize(sampleCount);
FF.av_samples_copy(datas, (IntPtr *)frame->ExtendedData, 0, 0, sampleCount, format.Channels, format.SampleFormat);
}
public void CopyToNoResize(int srcSampleOffset, int srcSampleCount, AudioFrame dstFrame, int dstSampleOffset = 0)
{
if (dstFrame.format != format)
{
throw new ArgumentException("目标帧格式不一致", nameof(dstFrame));
}
FF.av_samples_copy(dstFrame.datas, datas, dstSampleOffset, srcSampleOffset, srcSampleCount, format.Channels, format.SampleFormat);
}
public void Update(int sampleCount, params IntPtr[] newDatas)
{
if (newDatas.Length != format.LineCount)
{
throw new ArgumentException("参数个数和数据行数不一致", nameof(newDatas));
}
Resize(sampleCount);
FF.av_samples_copy(datas, newDatas, 0, 0, sampleCount, format.Channels, format.SampleFormat);
}
public void Update(int sampleCount, IntPtr newData)
{
if (format.LineCount != 1)
{
throw new ArgumentException($"该{nameof(AudioFrame)}对象拥有大于1的数据行数，因此不能调用此方法", nameof(newData));
}
Resize(sampleCount);
FF.av_samples_copy(datas, &newData, 0, 0, sampleCount, format.Channels, format.SampleFormat);
}
public void Update <T>(int sampleCount, params T *[] newDatas) where T : unmanaged
{
if (newDatas.Length != format.LineCount)
{
throw new ArgumentException("数组个数和数据行数不一致", nameof(newDatas));
}
Resize(sampleCount);
fixed(T **p = newDatas)
{
FF.av_samples_copy(datas, (IntPtr *)p, 0, 0, sampleCount, format.Channels, format.SampleFormat);
}
}
public void Update <T>(int sampleCount, ReadOnlySpan <T> newData1, ReadOnlySpan <T> newData2) where T : unmanaged
{
if (2 != format.LineCount)
{
throw new InvalidOperationException($"{nameof(Format)}的数据行数必须是2才能调用此方法");
}
Resize(sampleCount);
fixed(T *p1 = newData1)
fixed(T * p2 = newData2)
{
T **srcPointers = stackalloc[] { p1, p2 };
FF.av_samples_copy(datas, (IntPtr *)srcPointers, 0, 0, sampleCount, format.Channels, format.SampleFormat);
}
}
public void Update <T>(int sampleCount, ReadOnlySpan <T> newData1, ReadOnlySpan <T> newData2, ReadOnlySpan <T> newData3, ReadOnlySpan <T> newData4, ReadOnlySpan <T> newData5, ReadOnlySpan <T> newData6, ReadOnlySpan <T> newData7) where T : unmanaged
{
if (7 != format.LineCount)
{
throw new InvalidOperationException($"{nameof(Format)}的数据行数必须是7才能调用此方法");
}
Resize(sampleCount);
fixed(T *p1 = newData1)
fixed(T * p2 = newData2)
fixed(T * p3 = newData3)
fixed(T * p4 = newData4)
fixed(T * p5 = newData5)
fixed(T * p6 = newData6)
fixed(T * p7 = newData7)
{
T **srcPointers = stackalloc[] { p1, p2, p3, p4, p5, p6, p7 };
FF.av_samples_copy(datas, (IntPtr *)srcPointers, 0, 0, sampleCount, format.Channels, format.SampleFormat);
}
}
public void CopyTo(int srcSampleOffset, int srcSampleCount, AudioFrame dstFrame)
{
dstFrame.Resize(format, srcSampleCount);
FF.av_samples_copy(dstFrame.datas, datas, 0, srcSampleOffset, srcSampleCount, format.Channels, format.SampleFormat);
}
