CMVideoFormatDescription.h
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/* akvirtualcamera, virtual camera for Mac and Windows.
* Copyright (C) 2024 Gonzalo Exequiel Pedone
*
* akvirtualcamera is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* akvirtualcamera is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with akvirtualcamera. If not, see <http://www.gnu.org/licenses/>.
*
* Web-Site: http://webcamoid.github.io/
*/
#ifndef COREMEDIA_CMVIDEOFORMATDESCRIPTION_H
#define COREMEDIA_CMVIDEOFORMATDESCRIPTION_H
#include "CMFormatDescription.h"
#include "CMVideoDimensions.h"
using CMVideoFormatDescription = CFType;
using CMVideoFormatDescriptionRef = CFTypeRef;
enum CMIOVideoFormats
{
kCMPixelFormat_32ARGB,
kCMPixelFormat_24RGB,
kCMPixelFormat_16LE565,
kCMPixelFormat_16LE555,
kCMPixelFormat_422YpCbCr8,
kCMPixelFormat_422YpCbCr8_yuvs
};
using CMVideoCodecType = FourCharCode;
struct _CMVideoFormatDescriptionData
{
CMVideoCodecType codecType;
int32_t width;
int32_t height;
_CMVideoFormatDescriptionData(CMVideoCodecType codecType,
int32_t width,
int32_t height):
codecType(codecType),
width(width),
height(height)
{
}
};
using _CMVideoFormatDescriptionDataRef = _CMVideoFormatDescriptionData *;
inline CFTypeID CMVideoFormatDescriptionGetTypeID()
{
return 0x6;
}
inline OSStatus CMVideoFormatDescriptionCreate(CFAllocatorRef allocator,
CMVideoCodecType codecType,
int32_t width,
int32_t height,
CFDictionaryRef extensions,
CMVideoFormatDescriptionRef *formatDescriptionOut)
{
auto self = new CMVideoFormatDescription;
self->type = CMVideoFormatDescriptionGetTypeID();
self->data = new _CMVideoFormatDescriptionData(codecType, width, height);
self->size = sizeof(_CMVideoFormatDescriptionData);
self->deleter = [] (void *data) {
delete reinterpret_cast<_CMVideoFormatDescriptionDataRef>(data);
};
self->ref = 1;
*formatDescriptionOut = self;
return noErr;
}
inline FourCharCode CMFormatDescriptionGetMediaSubType(CMVideoFormatDescriptionRef videoDesc)
{
auto self = reinterpret_cast<_CMVideoFormatDescriptionDataRef>(videoDesc->data);
return self->codecType;
}
inline CMVideoDimensions CMVideoFormatDescriptionGetDimensions(CMVideoFormatDescriptionRef videoDesc)
{
auto self = reinterpret_cast<_CMVideoFormatDescriptionDataRef>(videoDesc->data);
return {self->width, self->height};
}
#endif // COREMEDIA_CMVIDEOFORMATDESCRIPTION_H