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Hevc #64

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6582e0c
h265: text description of profiles
funman Dec 2, 2025
d3d5801
h265: text description of range extension profiles
funman Dec 4, 2025
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83 changes: 83 additions & 0 deletions itu/h265.h
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Original file line number Diff line number Diff line change
Expand Up @@ -412,6 +412,89 @@ 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 inline 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 */

union constraint {
struct {
bool max_12bit: 1;
bool max_10bit: 1;
bool max_8bit: 1;
bool max_422chroma: 1;
bool max_420chroma: 1;
bool max_monochrome: 1;
bool intra: 1;
bool one_picture_only: 1;
};
unsigned int constraint;
};

static const struct {
const char name[32];
union constraint c;
} profile_name[] = {
{ "Monochrome", { { 1, 1, 1, 1, 1, 1, 0, 0, } }, },
{ "Monochrome 10", { { 1, 1, 0, 1, 1, 1, 0, 0, } }, },
{ "Monochrome 12", { { 1, 0, 0, 1, 1, 1, 0, 0, } }, },
{ "Monochrome 16", { { 0, 0, 0, 1, 1, 1, 0, 0, } }, },
{ "Main 12", { { 1, 0, 0, 1, 1, 0, 0, 0, } }, },
{ "Main 4:2:2 10", { { 1, 1, 0, 1, 0, 0, 0, 0, } }, },
{ "Main 4:2:2 12", { { 1, 0, 0, 1, 0, 0, 0, 0, } }, },
{ "Main 4:4:4", { { 1, 1, 1, 0, 0, 0, 0, 0, } }, },
{ "Main 4:4:4 10", { { 1, 1, 0, 0, 0, 0, 0, 0, } }, },
{ "Main 4:4:4 12", { { 1, 0, 0, 0, 0, 0, 0, 0, } }, },
{ "Main Intra", { { 1, 1, 1, 1, 1, 0, 1, 0, } }, },
{ "Main 10 Intra", { { 1, 1, 0, 1, 1, 0, 1, 0, } }, },
{ "Main 12 Intra", { { 1, 0, 0, 1, 1, 0, 1, 0, } }, },
{ "Main 4:2:2 10 Intra", { { 1, 1, 0, 1, 0, 0, 1, 0, } }, },
{ "Main 4:2:2 12 Intra", { { 1, 0, 0, 1, 0, 0, 1, 0, } }, },
{ "Main 4:4:4 Intra", { { 1, 1, 1, 0, 0, 0, 1, 0, } }, },
{ "Main 4:4:4 10 Intra", { { 1, 1, 0, 0, 0, 0, 1, 0, } }, },
{ "Main 4:4:4 12 Intra", { { 1, 0, 0, 0, 0, 0, 1, 0, } }, },
{ "Main 4:4:4 16 Intra", { { 0, 0, 0, 0, 0, 0, 1, 0, } }, },
{ "Main 4:4:4 Still Picture", { { 1, 1, 1, 0, 0, 0, 1, 1, } }, },
{ "Main 4:4:4 16 Still Picture", { { 0, 0, 0, 0, 0, 0, 1, 1, } }, },
};

const union constraint c = {
.max_12bit = max_12bit,
.max_10bit = max_10bit,
.max_8bit = max_8bit,
.max_422chroma = max_422chroma,
.max_420chroma = max_420chroma,
.max_monochrome = max_monochrome,
.intra = intra,
.one_picture_only = one_picture_only,
};

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

for (int i = 0; i < sizeof(profile_name) / sizeof(*profile_name); i++)
if (profile_name[i].c.constraint == c.constraint)
return profile_name[i].name;

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" :
i_profile == 11 ? "Screen-Extended High Throughput" : "Reserved";
}

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