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feat(apple): add cursor capture on iPad
37 lines
2.6 KiB
Swift
37 lines
2.6 KiB
Swift
// Synthetic 4:4:4 HEVC keyframes used only by `Stage444Probe` to probe decode capability.
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//
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// Each is the first IDR access unit (VPS + SPS + PPS + IDR slice, Annex-B) of a 256×256 HEVC
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// Range-Extensions clip — `chroma_format_idc = 3` — generated offline with libx265:
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// ffmpeg -f lavfi -i color=c=gray:s=256x256:r=30:d=0.1 -frames:v 3 \
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// -pix_fmt yuv444p[10le] -c:v libx265 \
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// -x265-params keyint=1:min-keyint=1:no-info=1:repeat-headers=1:aud=0 -f hevc out.hevc
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// 256×256 clears the hardware decoder's minimum-dimension floor (a 16×16 clip is rejected for every
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// chroma format). Validated to hardware-decode to `444v`/`x444` on Apple Silicon (M3).
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enum Probe444Blobs {
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/// 256×256 HEVC Range-Extensions 4:4:4 keyframe (Annex-B): 134 bytes.
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static let au444_8bit: [UInt8] = [
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0x00, 0x00, 0x00, 0x01, 0x40, 0x01, 0x0c, 0x01, 0xff, 0xff, 0x04, 0x08, 0x00, 0x00, 0x03, 0x00,
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0x9e, 0x28, 0x00, 0x00, 0x03, 0x00, 0x00, 0x3c, 0xba, 0x02, 0x40, 0x00, 0x00, 0x00, 0x01, 0x42,
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0x01, 0x01, 0x04, 0x08, 0x00, 0x00, 0x03, 0x00, 0x9e, 0x28, 0x00, 0x00, 0x03, 0x00, 0x00, 0x3c,
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0x90, 0x01, 0x01, 0x00, 0x80, 0xb2, 0xdd, 0x49, 0x26, 0x57, 0x80, 0xb4, 0x04, 0x00, 0x00, 0x03,
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0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0x78, 0x20, 0x00, 0x00, 0x00, 0x01, 0x44, 0x01, 0xc1, 0x72,
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0x86, 0x0c, 0x06, 0x24, 0x00, 0x00, 0x00, 0x01, 0x28, 0x01, 0xaf, 0x72, 0x15, 0xe8, 0x34, 0xeb,
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0xae, 0xfb, 0xfe, 0x75, 0x57, 0xca, 0xc1, 0x71, 0x43, 0x16, 0xf5, 0xc2, 0x40, 0xbd, 0x80, 0xa6,
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0x65, 0x35, 0x20, 0x28, 0x81, 0xa2, 0x5e, 0xc0, 0x93, 0x04, 0x10, 0x9b, 0x00, 0x34, 0xe0, 0x87,
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0x00, 0x00, 0x03, 0x00, 0x5b, 0x40,
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]
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/// 256×256 HEVC Range-Extensions 4:4:4 10-bit keyframe (Annex-B): 133 bytes.
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static let au444_10bit: [UInt8] = [
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0x00, 0x00, 0x00, 0x01, 0x40, 0x01, 0x0c, 0x01, 0xff, 0xff, 0x04, 0x08, 0x00, 0x00, 0x03, 0x00,
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0x9c, 0x28, 0x00, 0x00, 0x03, 0x00, 0x00, 0x3c, 0xba, 0x02, 0x40, 0x00, 0x00, 0x00, 0x01, 0x42,
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0x01, 0x01, 0x04, 0x08, 0x00, 0x00, 0x03, 0x00, 0x9c, 0x28, 0x00, 0x00, 0x03, 0x00, 0x00, 0x3c,
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0x90, 0x01, 0x01, 0x00, 0x80, 0x9b, 0x2d, 0xd4, 0x92, 0x65, 0x78, 0x0b, 0x40, 0x40, 0x00, 0x00,
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0x03, 0x00, 0x40, 0x00, 0x00, 0x07, 0x82, 0x00, 0x00, 0x00, 0x01, 0x44, 0x01, 0xc1, 0x72, 0x86,
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0x0c, 0x06, 0x24, 0x00, 0x00, 0x00, 0x01, 0x28, 0x01, 0xaf, 0x72, 0x15, 0xe8, 0x34, 0xeb, 0xae,
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0xfb, 0xfe, 0x75, 0x57, 0xca, 0xc1, 0x71, 0x43, 0x16, 0xf5, 0xc2, 0x40, 0xbd, 0x80, 0xa6, 0x65,
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0x35, 0x20, 0x28, 0x81, 0xa2, 0x5e, 0xc0, 0x93, 0x04, 0x10, 0x9b, 0x00, 0x34, 0xe0, 0x87, 0x00,
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0x00, 0x03, 0x00, 0x5b, 0x40,
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]
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}
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