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/* vt_common.c
Copyright (c) 2003-2021 HandBrake Team
This file is part of the HandBrake source code
Homepage: <http://handbrake.fr/>.
It may be used under the terms of the GNU General Public License v2.
For full terms see the file COPYING file or visit http://www.gnu.org/licenses/gpl-2.0.html
*/
#include "vt_common.h"
#include <VideoToolbox/VideoToolbox.h>
#include <CoreMedia/CoreMedia.h>
#include <CoreVideo/CoreVideo.h>
static const CFStringRef encoder_id_h264 = CFSTR("com.apple.videotoolbox.videoencoder.h264.gva");
static const CFStringRef encoder_id_h265 = CFSTR("com.apple.videotoolbox.videoencoder.hevc.gva");
static int encvt_available(CFStringRef encoder)
{
CFArrayRef encoder_list;
VTCopyVideoEncoderList(NULL, &encoder_list);
CFIndex size = CFArrayGetCount(encoder_list);
for (CFIndex i = 0; i < size; i++ )
{
CFDictionaryRef encoder_dict = CFArrayGetValueAtIndex(encoder_list, i);
CFStringRef encoder_id = CFDictionaryGetValue(encoder_dict, kVTVideoEncoderSpecification_EncoderID);
if (CFEqual(encoder_id, encoder))
{
CFRelease(encoder_list);
return 1;
}
}
CFRelease(encoder_list);
return 0;
}
static OSStatus encoder_properties(CMVideoCodecType codecType, CFStringRef *encoderIDOut, CFDictionaryRef *supportedPropertiesOut) API_AVAILABLE(macosx(10.13), ios(11.0), tvos(11.0))
{
const void *keys[1] = { kVTVideoEncoderSpecification_RequireHardwareAcceleratedVideoEncoder };
const void *values[1] = { kCFBooleanTrue };
CFDictionaryRef specification = CFDictionaryCreate(NULL, keys, values, 1, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
OSStatus err = VTCopySupportedPropertyDictionaryForEncoder(1920, 1080,
codecType, specification,
encoderIDOut,
supportedPropertiesOut);
CFRelease(specification);
return err;
}
static int hb_vt_is_hardware_encoder_available(CMVideoCodecType codecType)
{
#if defined(__MAC_11_0)
if (@available (macOS 11, *))
{
CFStringRef encoderIDOut;
CFDictionaryRef supportedPropertiesOut;
OSStatus err = encoder_properties(codecType, &encoderIDOut, &supportedPropertiesOut);
if (err == noErr) {
CFRelease(encoderIDOut);
CFRelease(supportedPropertiesOut);
return 1;
}
return 0;
}
else
{
#endif
CFStringRef encoder_id;
switch (codecType) {
case kCMVideoCodecType_H264:
encoder_id = encoder_id_h264;
break;
case kCMVideoCodecType_HEVC:
encoder_id = encoder_id_h265;
break;
default:
return 0;
}
return encvt_available(encoder_id);
#if defined(__MAC_11_0)
}
#endif
}
static int hb_vt_is_constant_quality_available(CMVideoCodecType codecType)
{
#if defined(__MAC_11_0) && defined(__aarch64__)
if (@available (macOS 11, *))
{
CFStringRef encoderIDOut;
CFDictionaryRef supportedPropertiesOut;
OSStatus err = encoder_properties(codecType, &encoderIDOut, &supportedPropertiesOut);
if (err == noErr) {
Boolean keyExists;
CFBooleanRef value = kCFBooleanFalse;
keyExists = CFDictionaryGetValueIfPresent(supportedPropertiesOut,
kVTCompressionPropertyKey_Quality,
(const void **)&value);
CFRelease(encoderIDOut);
CFRelease(supportedPropertiesOut);
if (keyExists) {
return 1;
}
}
}
#endif
return 0;
}
static int vt_h264_available;
int hb_vt_h264_is_available()
{
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
vt_h264_available = hb_vt_is_hardware_encoder_available(kCMVideoCodecType_H264);
});
return vt_h264_available;
}
static int vt_h265_available;
int hb_vt_h265_is_available()
{
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
vt_h265_available = hb_vt_is_hardware_encoder_available(kCMVideoCodecType_HEVC);
});
return vt_h265_available;
}
static int vt_h264_constant_quality;
int hb_vt_h264_is_constant_quality_available()
{
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
vt_h264_constant_quality = hb_vt_is_constant_quality_available(kCMVideoCodecType_H264);
});
return vt_h264_constant_quality;
}
static int vt_h265_constant_quality;
int hb_vt_h265_is_constant_quality_available()
{
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
vt_h265_constant_quality = hb_vt_is_constant_quality_available(kCMVideoCodecType_HEVC);
});
return vt_h265_constant_quality;
}
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