internal sImageFormat(ref sImageFormatDescription src)
{
bufferType = src.type;
index = src.index;
description = src.description;
pixelFormat = src.pixelFormat;
flags = src.flags;
}
public sPixelFormatMP getDataFormat(eBufferType bufferType)
{
Debug.Assert(bufferType.isMultiPlaneBufferType());
sStreamDataFormat sdf = default;
sdf.bufferType = bufferType;
file.call(eControlCode.G_FMT, ref sdf);
return(sdf.pix_mp);
}
public void setDataFormat(eBufferType bufferType, ref sPixelFormatMP pixelFormat)
{
Debug.Assert(bufferType.isMultiPlaneBufferType());
sStreamDataFormat sdf = default;
sdf.bufferType = bufferType;
sdf.pix_mp = pixelFormat;
file.call(eControlCode.S_FMT, ref sdf);
}
public bool tryDataFormat(eBufferType bufferType, sPixelFormatMP pixelFormat)
{
Debug.Assert(bufferType.isMultiPlaneBufferType());
sStreamDataFormat sdf = default;
sdf.bufferType = bufferType;
sdf.pix_mp = pixelFormat;
return(file.tryCall(eControlCode.TRY_FMT, ref sdf));
}
internal bool queryBufferCaps(eBufferType bufferType, eMemory type)
{
// If you want to query the capabilities with a minimum of side-effects, then this can be called with count set to 0, memory set to V4L2_MEMORY_MMAP and type set to the buffer type.
// This will free any previously allocated buffers, so this is typically something that will be done at the start of the application.
sRequestBuffers requestBuffers = new sRequestBuffers();
requestBuffers.memory = type;
requestBuffers.type = eBufferType.VideoOutputMPlane;
return(file.tryCall(eControlCode.REQBUFS, ref requestBuffers));
}
/// <summary>Enumerate image formats</summary>
public IEnumerable <sImageFormatDescription> enumerateFormats(eBufferType bufferType)
{
sImageFormatDescription desc = new sImageFormatDescription();
desc.type = bufferType;
for (int i = 0; true; i++)
{
desc.index = i;
if (!file.enumerate(eControlCode.ENUM_FMT, ref desc))
{
yield break;
}
yield return(desc);
}
}
static eBufferCapabilityFlags query(VideoDevice device, eBufferType bt)
{
eBufferCapabilityFlags res = eBufferCapabilityFlags.None;
if (device.queryBufferCaps(bt, eMemory.MemoryMap))
{
res |= eBufferCapabilityFlags.MemoryMap;
}
if (device.queryBufferCaps(bt, eMemory.UserPointer))
{
res |= eBufferCapabilityFlags.UserPointer;
}
if (device.queryBufferCaps(bt, eMemory.DmaSharedBuffer))
{
res |= eBufferCapabilityFlags.DmaSharedBuffer;
}
return(res);
}
public static bool isMultiPlaneBufferType(this eBufferType bt)
{
return(bt == eBufferType.VideoOutputMPlane || bt == eBufferType.VideoCaptureMPlane);
}
public void stopStreaming(eBufferType bt)
{
file.call(eControlCode.STREAMOFF, ref bt);
}
