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Hevc #64

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686ec4d
h265: text description of profiles
funman Dec 2, 2025
98d1ce5
h265: text description of range extension profiles
funman Dec 4, 2025
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112 changes: 112 additions & 0 deletions itu/h265.h
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Original file line number Diff line number Diff line change
Expand Up @@ -412,6 +412,118 @@ static inline uint32_t h265hvcc_get_profile_compatibility(const uint8_t *p)
return (p[2] << 24) | (p[3] << 16) | (p[4] << 8) | p[5];
}

static const char *h265_get_range_ext_profile(bool max_12bit, bool max_10bit, bool max_8bit, bool max_422chroma, bool max_420chroma, bool max_monochrome, bool intra, bool one_picture_only, bool lower_bit_rate)
{
/* ITU-T H.265 (V9) Table A.2 */

#define H265_CONSTRAINT_MAX_12BIT 7
#define H265_CONSTRAINT_MAX_10BIT 6
#define H265_CONSTRAINT_MAX_8BIT 5
#define H265_CONSTRAINT_MAX_422CHROMA 4
#define H265_CONSTRAINT_MAX_420CHROMA 3
#define H265_CONSTRAINT_MAX_MONOCHROME 2
#define H265_CONSTRAINT_INTRA 1
#define H265_CONSTRAINT_ONE_PICTURE_ONLY 0

#define H265_PROFILE_16_BIT 0
#define H265_PROFILE_12_BIT (1 << H265_CONSTRAINT_MAX_12BIT)
#define H265_PROFILE_10_BIT (1 << H265_CONSTRAINT_MAX_12BIT | 1 << H265_CONSTRAINT_MAX_10BIT)
#define H265_PROFILE_8_BIT (1 << H265_CONSTRAINT_MAX_12BIT | 1 << H265_CONSTRAINT_MAX_10BIT | 1 << H265_CONSTRAINT_MAX_8BIT)

#define H265_PROFILE_INTRA (1 << H265_CONSTRAINT_INTRA)

#define H265_PROFILE_STILL_PICTURE (H265_PROFILE_INTRA | 1 << H265_CONSTRAINT_ONE_PICTURE_ONLY)

#define H265_PROFILE_444 0
#define H265_PROFILE_422 (1 << H265_CONSTRAINT_MAX_422CHROMA)
#define H265_PROFILE_420 (1 << H265_CONSTRAINT_MAX_422CHROMA | 1 << H265_CONSTRAINT_MAX_420CHROMA)

#define H265_PROFILE_MONOCHROME (H265_PROFILE_420 | 1 << H265_CONSTRAINT_MAX_MONOCHROME)

uint8_t constraint = (!!max_12bit << H265_CONSTRAINT_MAX_12BIT) |
(!!max_10bit << H265_CONSTRAINT_MAX_10BIT) |
(!!max_8bit << H265_CONSTRAINT_MAX_8BIT) |
(!!max_422chroma << H265_CONSTRAINT_MAX_422CHROMA) |
(!!max_420chroma << H265_CONSTRAINT_MAX_420CHROMA) |
(!!max_monochrome << H265_CONSTRAINT_MAX_MONOCHROME) |
(!!intra << H265_CONSTRAINT_INTRA) |
(!!one_picture_only << H265_CONSTRAINT_ONE_PICTURE_ONLY);

if (!intra && !lower_bit_rate)
goto unknown;

switch (constraint) {
case H265_PROFILE_MONOCHROME | H265_PROFILE_8_BIT:
return "Monochrome";
case H265_PROFILE_MONOCHROME | H265_PROFILE_10_BIT:
return "Monochrome 10";
case H265_PROFILE_MONOCHROME | H265_PROFILE_12_BIT:
return "Monochrome 12";
case H265_PROFILE_MONOCHROME | H265_PROFILE_16_BIT:
return "Monochrome 16";

case H265_PROFILE_12_BIT | H265_PROFILE_420:
return "Main 12";
case H265_PROFILE_10_BIT | H265_PROFILE_422:
return "Main 4:2:2 10";
case H265_PROFILE_12_BIT | H265_PROFILE_422:
return "Main 4:2:2 12";

case H265_PROFILE_8_BIT | H265_PROFILE_444:
return "Main 4:4:4";
case H265_PROFILE_10_BIT | H265_PROFILE_444:
return "Main 4:4:4 10";
case H265_PROFILE_12_BIT | H265_PROFILE_444:
return "Main 4:4:4 12";

case H265_PROFILE_8_BIT | H265_PROFILE_420 | H265_PROFILE_INTRA:
return "Main Intra";
case H265_PROFILE_10_BIT | H265_PROFILE_420 | H265_PROFILE_INTRA:
return "Main 10 Intra";
case H265_PROFILE_12_BIT | H265_PROFILE_420 | H265_PROFILE_INTRA:
return "Main 12 Intra";

case H265_PROFILE_10_BIT | H265_PROFILE_422 | H265_PROFILE_INTRA:
return "Main 4:2:2 10 Intra";
case H265_PROFILE_12_BIT | H265_PROFILE_422 | H265_PROFILE_INTRA:
return "Main 4:2:2 12 Intra";

case H265_PROFILE_8_BIT | H265_PROFILE_444 | H265_PROFILE_INTRA:
return "Main 4:4:4 Intra";
case H265_PROFILE_10_BIT | H265_PROFILE_444 | H265_PROFILE_INTRA:
return "Main 4:4:4 10 Intra";
case H265_PROFILE_12_BIT | H265_PROFILE_444 | H265_PROFILE_INTRA:
return "Main 4:4:4 12 Intra";
case H265_PROFILE_16_BIT | H265_PROFILE_444 | H265_PROFILE_INTRA:
return "Main 4:4:4 16 Intra";

case H265_PROFILE_8_BIT | H265_PROFILE_444 | H265_PROFILE_STILL_PICTURE:
return "Main 4:4:4 Still Picture";
case H265_PROFILE_16_BIT | H265_PROFILE_444 | H265_PROFILE_STILL_PICTURE:
return "Main 4:4:4 16 Still Picture";
default:
break;
};

unknown:
return "Range ext unknown profile";
}

static inline const char *h265_get_profile_txt(uint8_t i_profile)
{
return i_profile == 0 ? "None" :
i_profile == 1 ? "Main" :
i_profile == 2 ? "Main 10" :
i_profile == 3 ? "Main Still Picture" :
i_profile == 4 ? "Range Extension" :
i_profile == 5 ? "High Throughput" :
i_profile == 6 ? "Multiview Main" :
i_profile == 7 ? "Scalable Main" :
i_profile == 8 ? "3D Main" :
i_profile == 9 ? "Screen Extended" :
i_profile == 10 ? "Scalable Range Extension" : "Reserved";
}

static inline void h265hvcc_set_constraint_indicator(uint8_t *p, uint64_t val)
{
p[6] = val >> 40;
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