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zimg.cpp
732 lines (612 loc) · 25.8 KB
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zimg.cpp
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#include <cmath>
#include <memory>
#include <string>
#include <tuple>
#include <type_traits>
#include <utility>
#include "common/cpuinfo.h"
#include "common/except.h"
#include "common/make_unique.h"
#include "common/pixel.h"
#include "common/static_map.h"
#include "common/zassert.h"
#include "graph/filtergraph.h"
#include "graph/graphbuilder.h"
#include "graph/image_buffer.h"
#include "colorspace/colorspace.h"
#include "depth/depth.h"
#include "resize/filter.h"
#include "zimg.h"
#define ZIMG_RESIZE_UNRESIZE static_cast<zimg_resample_filter_e>(-1)
namespace {
constexpr unsigned API_VERSION_2_0 = ZIMG_MAKE_API_VERSION(2, 0);
constexpr unsigned API_VERSION_2_1 = ZIMG_MAKE_API_VERSION(2, 1);
constexpr unsigned API_VERSION_2_2 = ZIMG_MAKE_API_VERSION(2, 2);
constexpr unsigned API_VERSION_2_4 = ZIMG_MAKE_API_VERSION(2, 4);
#define API_VERSION_ASSERT(x) zassert_d((x) >= API_VERSION_2_0, "API version invalid")
#define POINTER_ALIGNMENT_ASSERT(x) zassert_d(!(x) || reinterpret_cast<uintptr_t>(x) % zimg::ALIGNMENT_RELAXED == 0, "pointer not aligned")
#define STRIDE_ALIGNMENT_ASSERT(x) zassert_d(!(x) || (x) % zimg::ALIGNMENT_RELAXED == 0, "buffer stride not aligned")
#define POINTER_ALIGNMENT64_ASSERT(x) zassert_d(!(x) || reinterpret_cast<uintptr_t>(x) % zimg::ALIGNMENT == 0, "pointer not aligned")
#define STRIDE_ALIGNMENT64_ASSERT(x) zassert_d(!(x) || (x) % zimg::ALIGNMENT == 0, "buffer stride not aligned")
thread_local zimg_error_code_e g_last_error = ZIMG_ERROR_SUCCESS;
thread_local std::string g_last_error_msg;
constexpr unsigned VERSION_INFO[] = { 3, 0, 4 };
template <class T, class U>
T *assert_dynamic_type(U *ptr) noexcept
{
zassert_d(dynamic_cast<T *>(ptr), "bad dynamic type");
return static_cast<T *>(ptr);
}
void clear_last_error_message() noexcept
{
g_last_error_msg.clear();
g_last_error_msg.shrink_to_fit();
}
void record_exception_message(const zimg::error::Exception &e) noexcept
{
try {
g_last_error_msg = e.what();
} catch (const std::bad_alloc &) {
clear_last_error_message();
}
}
zimg_error_code_e handle_exception(std::exception_ptr eptr) noexcept
{
using namespace zimg::error;
zimg_error_code_e code = ZIMG_ERROR_UNKNOWN;
#define CATCH(type, error_code) catch (const type &e) { record_exception_message(e); code = (error_code); }
#define FATAL(type, error_code, msg) catch (const type &e) { record_exception_message(e); code = (error_code); zassert_dfatal(msg); }
try {
std::rethrow_exception(eptr);
}
CATCH(UnknownError, ZIMG_ERROR_UNKNOWN)
CATCH(OutOfMemory, ZIMG_ERROR_OUT_OF_MEMORY)
CATCH(UserCallbackFailed, ZIMG_ERROR_USER_CALLBACK_FAILED)
CATCH(GreyscaleSubsampling, ZIMG_ERROR_GREYSCALE_SUBSAMPLING)
CATCH(ColorFamilyMismatch, ZIMG_ERROR_COLOR_FAMILY_MISMATCH)
CATCH(ImageNotDivisible, ZIMG_ERROR_IMAGE_NOT_DIVISIBLE)
CATCH(BitDepthOverflow, ZIMG_ERROR_BIT_DEPTH_OVERFLOW)
CATCH(LogicError, ZIMG_ERROR_LOGIC)
CATCH(EnumOutOfRange, ZIMG_ERROR_ENUM_OUT_OF_RANGE)
CATCH(InvalidImageSize, ZIMG_ERROR_INVALID_IMAGE_SIZE)
CATCH(IllegalArgument, ZIMG_ERROR_ILLEGAL_ARGUMENT)
CATCH(UnsupportedSubsampling, ZIMG_ERROR_UNSUPPORTED_SUBSAMPLING)
CATCH(NoColorspaceConversion, ZIMG_ERROR_NO_COLORSPACE_CONVERSION)
CATCH(NoFieldParityConversion, ZIMG_ERROR_NO_FIELD_PARITY_CONVERSION)
CATCH(ResamplingNotAvailable, ZIMG_ERROR_RESAMPLING_NOT_AVAILABLE)
CATCH(UnsupportedOperation, ZIMG_ERROR_UNSUPPORTED_OPERATION)
FATAL(InternalError, ZIMG_ERROR_UNKNOWN, "internal error generated")
FATAL(Exception, ZIMG_ERROR_UNKNOWN, "unregistered error generated")
catch (...) {
g_last_error_msg[0] = '\0';
zassert_dfatal("bad exception type");
}
#undef CATCH
#undef FATAL
g_last_error = code;
return code;
}
template <class Map, class Key>
typename Map::mapped_type search_enum_map(const Map &map, const Key &key, const char *msg)
{
auto it = map.find(key);
if (it == map.end())
zimg::error::throw_<zimg::error::EnumOutOfRange>(msg);
return it->second;
}
template <class Map, class Key>
typename Map::mapped_type search_itu_enum_map(const Map &map, const Key &key, const char *msg)
{
if (static_cast<int>(key) < 0 || static_cast<int>(key) > 255)
zimg::error::throw_<zimg::error::EnumOutOfRange>(msg);
auto it = map.find(key);
if (it == map.end())
zimg::error::throw_<zimg::error::NoColorspaceConversion>(msg);
return it->second;
}
zimg::CPUClass translate_cpu(zimg_cpu_type_e cpu)
{
using zimg::CPUClass;
static SM_CONSTEXPR_14 const zimg::static_map<zimg_cpu_type_e, CPUClass, 19> map{
{ ZIMG_CPU_NONE, CPUClass::NONE },
{ ZIMG_CPU_AUTO, CPUClass::AUTO },
{ ZIMG_CPU_AUTO_64B, CPUClass::AUTO_64B },
#if defined(ZIMG_X86)
{ ZIMG_CPU_X86_MMX, CPUClass::NONE },
{ ZIMG_CPU_X86_SSE, CPUClass::X86_SSE },
{ ZIMG_CPU_X86_SSE2, CPUClass::X86_SSE2 },
{ ZIMG_CPU_X86_SSE3, CPUClass::X86_SSE2 },
{ ZIMG_CPU_X86_SSSE3, CPUClass::X86_SSE2 },
{ ZIMG_CPU_X86_SSE41, CPUClass::X86_SSE2 },
{ ZIMG_CPU_X86_SSE42, CPUClass::X86_SSE2 },
{ ZIMG_CPU_X86_AVX, CPUClass::X86_AVX },
{ ZIMG_CPU_X86_F16C, CPUClass::X86_F16C },
{ ZIMG_CPU_X86_AVX2, CPUClass::X86_AVX2 },
{ ZIMG_CPU_X86_AVX512F, CPUClass::X86_AVX2 },
{ ZIMG_CPU_X86_AVX512_SKX, CPUClass::X86_AVX512 },
{ ZIMG_CPU_X86_AVX512_CLX, CPUClass::X86_AVX512_CLX },
{ ZIMG_CPU_X86_AVX512_PMC, CPUClass::X86_AVX512 },
{ ZIMG_CPU_X86_AVX512_SNC, CPUClass::X86_AVX512_CLX },
#elif defined(ZIMG_ARM)
{ ZIMG_CPU_ARM_NEON_VFPv3, CPUClass::NONE },
{ ZIMG_CPU_ARM_NEON_VFPv4, CPUClass::ARM_NEON },
#endif
};
return search_enum_map(map, cpu, "unrecognized cpu type");
}
zimg::PixelType translate_pixel_type(zimg_pixel_type_e pixel_type)
{
using zimg::PixelType;
static SM_CONSTEXPR_14 const zimg::static_map<zimg_pixel_type_e, zimg::PixelType, 4> map{
{ ZIMG_PIXEL_BYTE, PixelType::BYTE },
{ ZIMG_PIXEL_WORD, PixelType::WORD },
{ ZIMG_PIXEL_HALF, PixelType::HALF },
{ ZIMG_PIXEL_FLOAT, PixelType::FLOAT },
};
return search_enum_map(map, pixel_type, "unrecognized pixel type");
}
bool translate_pixel_range(zimg_pixel_range_e range)
{
static SM_CONSTEXPR_14 const zimg::static_map<zimg_pixel_range_e, bool, 2> map{
{ ZIMG_RANGE_LIMITED, false },
{ ZIMG_RANGE_FULL, true },
};
return search_enum_map(map, range, "unrecognized pixel range");
}
zimg::graph::GraphBuilder::ColorFamily translate_color_family(zimg_color_family_e family)
{
using zimg::graph::GraphBuilder;
static SM_CONSTEXPR_14 const zimg::static_map<zimg_color_family_e, GraphBuilder::ColorFamily, 3> map{
{ ZIMG_COLOR_GREY, GraphBuilder::ColorFamily::GREY },
{ ZIMG_COLOR_RGB, GraphBuilder::ColorFamily::RGB },
{ ZIMG_COLOR_YUV, GraphBuilder::ColorFamily::YUV },
};
return search_enum_map(map, family, "unrecognized color family");
}
zimg::graph::GraphBuilder::AlphaType translate_alpha(zimg_alpha_type_e alpha)
{
using zimg::graph::GraphBuilder;
static SM_CONSTEXPR_14 const zimg::static_map<zimg_alpha_type_e, GraphBuilder::AlphaType, 3> map{
{ ZIMG_ALPHA_NONE, GraphBuilder::AlphaType::NONE },
{ ZIMG_ALPHA_STRAIGHT, GraphBuilder::AlphaType::STRAIGHT },
{ ZIMG_ALPHA_PREMULTIPLIED, GraphBuilder::AlphaType::PREMULTIPLIED },
};
return search_enum_map(map, alpha, "unrecognized alpha type");
}
zimg::graph::GraphBuilder::FieldParity translate_field_parity(zimg_field_parity_e field)
{
using zimg::graph::GraphBuilder;
static SM_CONSTEXPR_14 const zimg::static_map<zimg_field_parity_e, GraphBuilder::FieldParity, 3> map{
{ ZIMG_FIELD_PROGRESSIVE, GraphBuilder::FieldParity::PROGRESSIVE },
{ ZIMG_FIELD_TOP, GraphBuilder::FieldParity::TOP },
{ ZIMG_FIELD_BOTTOM, GraphBuilder::FieldParity::BOTTOM },
};
return search_enum_map(map, field, "unrecognized field parity");
}
std::pair<zimg::graph::GraphBuilder::ChromaLocationW, zimg::graph::GraphBuilder::ChromaLocationH> translate_chroma_location(zimg_chroma_location_e chromaloc)
{
typedef zimg::graph::GraphBuilder::ChromaLocationW ChromaLocationW;
typedef zimg::graph::GraphBuilder::ChromaLocationH ChromaLocationH;
// Workaround for std::pair assignment operator missing constexpr.
struct chroma_pair {
ChromaLocationW first;
ChromaLocationH second;
operator std::pair<ChromaLocationW, ChromaLocationH>() const { return{ first, second }; }
};
static SM_CONSTEXPR_14 const zimg::static_map<zimg_chroma_location_e, chroma_pair, 6> map{
{ ZIMG_CHROMA_LEFT, { ChromaLocationW::LEFT, ChromaLocationH::CENTER } },
{ ZIMG_CHROMA_CENTER, { ChromaLocationW::CENTER, ChromaLocationH::CENTER } },
{ ZIMG_CHROMA_TOP_LEFT, { ChromaLocationW::LEFT, ChromaLocationH::TOP } },
{ ZIMG_CHROMA_TOP, { ChromaLocationW::CENTER, ChromaLocationH::TOP } },
{ ZIMG_CHROMA_BOTTOM_LEFT, { ChromaLocationW::LEFT, ChromaLocationH::BOTTOM } },
{ ZIMG_CHROMA_BOTTOM, { ChromaLocationW::CENTER, ChromaLocationH::BOTTOM } },
};
return search_enum_map(map, chromaloc, "unrecognized chroma location");
}
zimg::colorspace::MatrixCoefficients translate_matrix(zimg_matrix_coefficients_e matrix)
{
using zimg::colorspace::MatrixCoefficients;
static SM_CONSTEXPR_14 const zimg::static_map<zimg_matrix_coefficients_e, zimg::colorspace::MatrixCoefficients, 13> map{
{ ZIMG_MATRIX_RGB, MatrixCoefficients::RGB },
{ ZIMG_MATRIX_BT709, MatrixCoefficients::REC_709 },
{ ZIMG_MATRIX_UNSPECIFIED, MatrixCoefficients::UNSPECIFIED },
{ ZIMG_MATRIX_FCC, MatrixCoefficients::FCC },
{ ZIMG_MATRIX_BT470_BG, MatrixCoefficients::REC_601 },
{ ZIMG_MATRIX_ST170_M, MatrixCoefficients::REC_601 },
{ ZIMG_MATRIX_ST240_M, MatrixCoefficients::SMPTE_240M },
{ ZIMG_MATRIX_YCGCO, MatrixCoefficients::YCGCO },
{ ZIMG_MATRIX_BT2020_NCL, MatrixCoefficients::REC_2020_NCL },
{ ZIMG_MATRIX_BT2020_CL, MatrixCoefficients::REC_2020_CL },
{ ZIMG_MATRIX_CHROMATICITY_DERIVED_NCL, MatrixCoefficients::CHROMATICITY_DERIVED_NCL },
{ ZIMG_MATRIX_CHROMATICITY_DERIVED_CL, MatrixCoefficients::CHROMATICITY_DERIVED_CL },
{ ZIMG_MATRIX_ICTCP, MatrixCoefficients::REC_2100_ICTCP },
};
return search_itu_enum_map(map, matrix, "unrecognized matrix coefficients");
}
zimg::colorspace::TransferCharacteristics translate_transfer(zimg_transfer_characteristics_e transfer)
{
using zimg::colorspace::TransferCharacteristics;
static SM_CONSTEXPR_14 const zimg::static_map<zimg_transfer_characteristics_e, TransferCharacteristics, 15> map{
{ ZIMG_TRANSFER_BT709, TransferCharacteristics::REC_709 },
{ ZIMG_TRANSFER_UNSPECIFIED, TransferCharacteristics::UNSPECIFIED },
{ ZIMG_TRANSFER_ST240_M, TransferCharacteristics::SMPTE_240M },
{ ZIMG_TRANSFER_BT601, TransferCharacteristics::REC_709 },
{ ZIMG_TRANSFER_BT470_M, TransferCharacteristics::REC_470_M },
{ ZIMG_TRANSFER_BT470_BG, TransferCharacteristics::REC_470_BG },
{ ZIMG_TRANSFER_IEC_61966_2_4, TransferCharacteristics::XVYCC },
{ ZIMG_TRANSFER_IEC_61966_2_1, TransferCharacteristics::SRGB },
{ ZIMG_TRANSFER_BT2020_10, TransferCharacteristics::REC_709 },
{ ZIMG_TRANSFER_BT2020_12, TransferCharacteristics::REC_709 },
{ ZIMG_TRANSFER_LINEAR, TransferCharacteristics::LINEAR },
{ ZIMG_TRANSFER_LOG_100, TransferCharacteristics::LOG_100 },
{ ZIMG_TRANSFER_LOG_316, TransferCharacteristics::LOG_316 },
{ ZIMG_TRANSFER_ST2084, TransferCharacteristics::ST_2084 },
{ ZIMG_TRANSFER_ARIB_B67, TransferCharacteristics::ARIB_B67 },
};
return search_itu_enum_map(map, transfer, "unrecognized transfer characteristics");
}
zimg::colorspace::ColorPrimaries translate_primaries(zimg_color_primaries_e primaries)
{
using zimg::colorspace::ColorPrimaries;
static SM_CONSTEXPR_14 const zimg::static_map<zimg_color_primaries_e, ColorPrimaries, 12> map{
{ ZIMG_PRIMARIES_BT470_M, ColorPrimaries::REC_470_M },
{ ZIMG_PRIMARIES_BT470_BG, ColorPrimaries::REC_470_BG },
{ ZIMG_PRIMARIES_BT709, ColorPrimaries::REC_709 },
{ ZIMG_PRIMARIES_UNSPECIFIED, ColorPrimaries::UNSPECIFIED },
{ ZIMG_PRIMARIES_ST170_M, ColorPrimaries::SMPTE_C },
{ ZIMG_PRIMARIES_ST240_M, ColorPrimaries::SMPTE_C },
{ ZIMG_PRIMARIES_FILM, ColorPrimaries::FILM },
{ ZIMG_PRIMARIES_BT2020, ColorPrimaries::REC_2020 },
{ ZIMG_PRIMARIES_ST428, ColorPrimaries::XYZ },
{ ZIMG_PRIMARIES_ST431_2, ColorPrimaries::DCI_P3 },
{ ZIMG_PRIMARIES_ST432_1, ColorPrimaries::DCI_P3_D65 },
{ ZIMG_PRIMARIES_EBU3213_E, ColorPrimaries::JEDEC_P22 },
};
return search_itu_enum_map(map, primaries, "unrecognized color primaries");
}
zimg::depth::DitherType translate_dither(zimg_dither_type_e dither)
{
using zimg::depth::DitherType;
static SM_CONSTEXPR_14 const zimg::static_map<zimg_dither_type_e, DitherType, 4> map{
{ ZIMG_DITHER_NONE, DitherType::NONE },
{ ZIMG_DITHER_ORDERED, DitherType::ORDERED },
{ ZIMG_DITHER_RANDOM, DitherType::RANDOM },
{ ZIMG_DITHER_ERROR_DIFFUSION, DitherType::ERROR_DIFFUSION },
};
return search_enum_map(map, dither, "unrecognized dither type");
}
std::unique_ptr<zimg::resize::Filter> translate_resize_filter(zimg_resample_filter_e filter_type, double param_a, double param_b)
{
if (filter_type == ZIMG_RESIZE_UNRESIZE)
return nullptr;
try {
switch (filter_type) {
case ZIMG_RESIZE_POINT:
return ztd::make_unique<zimg::resize::PointFilter>();
case ZIMG_RESIZE_BILINEAR:
return ztd::make_unique<zimg::resize::BilinearFilter>();
case ZIMG_RESIZE_BICUBIC:
param_a = std::isnan(param_a) ? zimg::resize::BicubicFilter::DEFAULT_B : param_a;
param_b = std::isnan(param_b) ? zimg::resize::BicubicFilter::DEFAULT_C : param_b;
return ztd::make_unique<zimg::resize::BicubicFilter>(param_a, param_b);
case ZIMG_RESIZE_SPLINE16:
return ztd::make_unique<zimg::resize::Spline16Filter>();
case ZIMG_RESIZE_SPLINE36:
return ztd::make_unique<zimg::resize::Spline36Filter>();
case ZIMG_RESIZE_SPLINE64:
return ztd::make_unique<zimg::resize::Spline64Filter>();
case ZIMG_RESIZE_LANCZOS:
param_a = std::isnan(param_a) ? zimg::resize::LanczosFilter::DEFAULT_TAPS : std::max(param_a, 1.0);
return ztd::make_unique<zimg::resize::LanczosFilter>(static_cast<unsigned>(param_a));
default:
zimg::error::throw_<zimg::error::EnumOutOfRange>("unrecognized resampling filter");
}
} catch (const std::bad_alloc &) {
zimg::error::throw_<zimg::error::OutOfMemory>();
}
}
zimg::graph::ColorImageBuffer<void> import_image_buffer(const zimg_image_buffer &src)
{
zimg::graph::ColorImageBuffer<void> dst{};
API_VERSION_ASSERT(src.version);
if (src.version >= API_VERSION_2_0) {
unsigned num_planes = src.version >= API_VERSION_2_4 ? 4 : 3;
for (unsigned p = 0; p < num_planes; ++p) {
dst[p] = zimg::graph::ImageBuffer<void>{ src.plane[p].data, src.plane[p].stride, src.plane[p].mask };
}
}
return dst;
}
zimg::graph::ColorImageBuffer<const void> import_image_buffer(const zimg_image_buffer_const &src)
{
zimg::graph::ColorImageBuffer<const void> dst{};
API_VERSION_ASSERT(src.version);
if (src.version >= API_VERSION_2_0) {
unsigned num_planes = src.version >= API_VERSION_2_4 ? 4 : 3;
for (unsigned p = 0; p < num_planes; ++p) {
dst[p] = zimg::graph::ImageBuffer<const void>{ src.plane[p].data, src.plane[p].stride, src.plane[p].mask };
}
}
return dst;
}
void import_graph_state_common(const zimg_image_format &src, zimg::graph::GraphBuilder::state *out)
{
if (src.version >= API_VERSION_2_0) {
out->width = src.width;
out->height = src.height;
out->type = translate_pixel_type(src.pixel_type);
out->subsample_w = src.subsample_w;
out->subsample_h = src.subsample_h;
// Handle colorspace constants separately.
out->color = translate_color_family(src.color_family);
out->depth = src.depth ? src.depth : zimg::pixel_depth(out->type);
out->fullrange = translate_pixel_range(src.pixel_range);
out->parity = translate_field_parity(src.field_parity);
std::tie(out->chroma_location_w, out->chroma_location_h) = translate_chroma_location(src.chroma_location);
}
if (src.version >= API_VERSION_2_1) {
out->active_left = std::isnan(src.active_region.left) ? 0 : src.active_region.left;
out->active_top = std::isnan(src.active_region.top) ? 0 : src.active_region.top;
out->active_width = std::isnan(src.active_region.width) ? src.width : src.active_region.width;
out->active_height = std::isnan(src.active_region.height) ? src.height : src.active_region.height;
} else {
out->active_left = 0.0;
out->active_top = 0.0;
out->active_width = src.width;
out->active_height = src.height;
}
if (src.version >= API_VERSION_2_4)
out->alpha = translate_alpha(src.alpha);
}
std::pair<zimg::graph::GraphBuilder::state, zimg::graph::GraphBuilder::state> import_graph_state(const zimg_image_format &src, const zimg_image_format &dst)
{
API_VERSION_ASSERT(src.version);
API_VERSION_ASSERT(dst.version);
zassert_d(src.version == dst.version, "image format versions do not match");
zimg::graph::GraphBuilder::state src_state{};
zimg::graph::GraphBuilder::state dst_state{};
import_graph_state_common(src, &src_state);
import_graph_state_common(dst, &dst_state);
if (src.version >= API_VERSION_2_0) {
// Accept unenumerated colorspaces if they form the basic no-op case.
if (src.color_family == dst.color_family &&
src.matrix_coefficients == dst.matrix_coefficients &&
src.transfer_characteristics == dst.transfer_characteristics &&
src.color_primaries == dst.color_primaries)
{
src_state.colorspace = zimg::colorspace::ColorspaceDefinition{};
dst_state.colorspace = zimg::colorspace::ColorspaceDefinition{};
} else {
src_state.colorspace.matrix = translate_matrix(src.matrix_coefficients);
src_state.colorspace.transfer = translate_transfer(src.transfer_characteristics);
src_state.colorspace.primaries = translate_primaries(src.color_primaries);
dst_state.colorspace.matrix = translate_matrix(dst.matrix_coefficients);
dst_state.colorspace.transfer = translate_transfer(dst.transfer_characteristics);
dst_state.colorspace.primaries = translate_primaries(dst.color_primaries);
}
}
return{ src_state, dst_state };
}
zimg::graph::GraphBuilder::params import_graph_params(const zimg_graph_builder_params &src, std::unique_ptr<zimg::resize::Filter> filters[2])
{
API_VERSION_ASSERT(src.version);
zimg::graph::GraphBuilder::params params{};
if (src.version >= API_VERSION_2_0) {
filters[0] = translate_resize_filter(src.resample_filter, src.filter_param_a, src.filter_param_b);
filters[1] = translate_resize_filter(src.resample_filter_uv, src.filter_param_a_uv, src.filter_param_b_uv);
params.filter = filters[0].get();
params.filter_uv = filters[1].get();
params.unresize = src.resample_filter == ZIMG_RESIZE_UNRESIZE;
params.dither_type = translate_dither(src.dither_type);
params.cpu = translate_cpu(src.cpu_type);
}
if (src.version >= API_VERSION_2_2) {
params.peak_luminance = src.nominal_peak_luminance;
params.approximate_gamma = !!src.allow_approximate_gamma;
}
return params;
}
} // namespace
void zimg_get_version_info(unsigned *major, unsigned *minor, unsigned *micro)
{
zassert_d(major, "null pointer");
zassert_d(minor, "null pointer");
zassert_d(micro, "null pointer");
*major = VERSION_INFO[0];
*minor = VERSION_INFO[1];
*micro = VERSION_INFO[2];
}
unsigned zimg_get_api_version(unsigned *major, unsigned *minor)
{
if (major)
*major = ZIMG_API_VERSION_MAJOR;
if (minor)
*minor = ZIMG_API_VERSION_MINOR;
return ZIMG_API_VERSION;
}
zimg_error_code_e zimg_get_last_error(char *err_msg, size_t n)
{
if (err_msg && n) {
std::strncpy(err_msg, g_last_error_msg.c_str(), n);
err_msg[n - 1] = '\0';
}
return g_last_error;
}
void zimg_clear_last_error(void)
{
g_last_error = ZIMG_ERROR_SUCCESS;
clear_last_error_message();
}
unsigned zimg_select_buffer_mask(unsigned count)
{
return zimg::graph::select_zimg_buffer_mask(count);
}
#define EX_BEGIN \
zimg_error_code_e ret = ZIMG_ERROR_SUCCESS; \
try {
#define EX_END \
} catch (...) { \
ret = handle_exception(std::current_exception()); \
} \
return ret;
void zimg_filter_graph_free(zimg_filter_graph *ptr)
{
delete ptr;
}
zimg_error_code_e zimg_filter_graph_get_tmp_size(const zimg_filter_graph *ptr, size_t *out)
{
zassert_d(ptr, "null pointer");
zassert_d(out, "null pointer");
EX_BEGIN
*out = assert_dynamic_type<const zimg::graph::FilterGraph>(ptr)->get_tmp_size();
EX_END
}
zimg_error_code_e zimg_filter_graph_get_input_buffering(const zimg_filter_graph *ptr, unsigned *out)
{
zassert_d(ptr, "null pointer");
zassert_d(out, "null pointer");
EX_BEGIN
*out = assert_dynamic_type<const zimg::graph::FilterGraph>(ptr)->get_input_buffering();
EX_END
}
zimg_error_code_e zimg_filter_graph_get_output_buffering(const zimg_filter_graph *ptr, unsigned *out)
{
zassert_d(ptr, "null pointer");
zassert_d(out, "null pointer");
EX_BEGIN
*out = assert_dynamic_type<const zimg::graph::FilterGraph>(ptr)->get_output_buffering();
EX_END
}
zimg_error_code_e zimg_filter_graph_process(const zimg_filter_graph *ptr, const zimg_image_buffer_const *src, const zimg_image_buffer *dst, void *tmp,
zimg_filter_graph_callback unpack_cb, void *unpack_user,
zimg_filter_graph_callback pack_cb, void *pack_user)
{
zassert_d(ptr, "null pointer");
zassert_d(src, "null pointer");
zassert_d(dst, "null pointer");
EX_BEGIN
const zimg::graph::FilterGraph *graph = assert_dynamic_type<const zimg::graph::FilterGraph>(ptr);
if (graph->requires_64b_alignment()) {
POINTER_ALIGNMENT64_ASSERT(src->plane[0].data);
POINTER_ALIGNMENT64_ASSERT(src->plane[1].data);
POINTER_ALIGNMENT64_ASSERT(src->plane[2].data);
STRIDE_ALIGNMENT64_ASSERT(src->plane[0].stride);
STRIDE_ALIGNMENT64_ASSERT(src->plane[1].stride);
STRIDE_ALIGNMENT64_ASSERT(src->plane[2].stride);
POINTER_ALIGNMENT64_ASSERT(dst->plane[0].data);
POINTER_ALIGNMENT64_ASSERT(dst->plane[1].data);
POINTER_ALIGNMENT64_ASSERT(dst->plane[2].data);
STRIDE_ALIGNMENT64_ASSERT(dst->plane[0].stride);
STRIDE_ALIGNMENT64_ASSERT(dst->plane[1].stride);
STRIDE_ALIGNMENT64_ASSERT(dst->plane[2].stride);
if (src->version >= API_VERSION_2_4) {
POINTER_ALIGNMENT64_ASSERT(src->plane[3].data);
STRIDE_ALIGNMENT64_ASSERT(src->plane[3].stride);
}
if (dst->version >= API_VERSION_2_4) {
POINTER_ALIGNMENT64_ASSERT(dst->plane[3].data);
STRIDE_ALIGNMENT64_ASSERT(dst->plane[3].stride);
}
POINTER_ALIGNMENT64_ASSERT(tmp);
} else {
POINTER_ALIGNMENT_ASSERT(src->plane[0].data);
POINTER_ALIGNMENT_ASSERT(src->plane[1].data);
POINTER_ALIGNMENT_ASSERT(src->plane[2].data);
STRIDE_ALIGNMENT_ASSERT(src->plane[0].stride);
STRIDE_ALIGNMENT_ASSERT(src->plane[1].stride);
STRIDE_ALIGNMENT_ASSERT(src->plane[2].stride);
POINTER_ALIGNMENT_ASSERT(dst->plane[0].data);
POINTER_ALIGNMENT_ASSERT(dst->plane[1].data);
POINTER_ALIGNMENT_ASSERT(dst->plane[2].data);
STRIDE_ALIGNMENT_ASSERT(dst->plane[0].stride);
STRIDE_ALIGNMENT_ASSERT(dst->plane[1].stride);
STRIDE_ALIGNMENT_ASSERT(dst->plane[2].stride);
if (src->version >= API_VERSION_2_4) {
POINTER_ALIGNMENT_ASSERT(src->plane[3].data);
STRIDE_ALIGNMENT_ASSERT(src->plane[3].stride);
}
if (dst->version >= API_VERSION_2_4) {
POINTER_ALIGNMENT_ASSERT(dst->plane[3].data);
STRIDE_ALIGNMENT_ASSERT(dst->plane[3].stride);
}
POINTER_ALIGNMENT_ASSERT(tmp);
}
auto src_buf = import_image_buffer(*src);
auto dst_buf = import_image_buffer(*dst);
graph->process(src_buf, dst_buf, tmp, { unpack_cb, unpack_user }, { pack_cb, pack_user });
EX_END
}
#undef EX_BEGIN
#undef EX_END
void zimg_image_format_default(zimg_image_format *ptr, unsigned version)
{
zassert_d(ptr, "null pointer");
API_VERSION_ASSERT(version);
ptr->version = version;
if (version >= API_VERSION_2_0) {
ptr->width = 0;
ptr->height = 0;
ptr->pixel_type = static_cast<zimg_pixel_type_e>(-1);
ptr->subsample_w = 0;
ptr->subsample_h = 0;
ptr->color_family = ZIMG_COLOR_GREY;
ptr->matrix_coefficients = ZIMG_MATRIX_UNSPECIFIED;
ptr->transfer_characteristics = ZIMG_TRANSFER_UNSPECIFIED;
ptr->color_primaries = ZIMG_PRIMARIES_UNSPECIFIED;
ptr->depth = 0;
ptr->pixel_range = ZIMG_RANGE_LIMITED;
ptr->field_parity = ZIMG_FIELD_PROGRESSIVE;
ptr->chroma_location = ZIMG_CHROMA_LEFT;
}
if (version >= API_VERSION_2_1) {
ptr->active_region.left = NAN;
ptr->active_region.top = NAN;
ptr->active_region.width = NAN;
ptr->active_region.height = NAN;
}
if (version >= API_VERSION_2_4) {
ptr->alpha = ZIMG_ALPHA_NONE;
}
}
void zimg_graph_builder_params_default(zimg_graph_builder_params *ptr, unsigned version)
{
zassert_d(ptr, "null pointer");
API_VERSION_ASSERT(version);
ptr->version = version;
if (version >= API_VERSION_2_0) {
ptr->resample_filter = ZIMG_RESIZE_BICUBIC;
ptr->filter_param_a = NAN;
ptr->filter_param_b = NAN;
ptr->resample_filter_uv = ZIMG_RESIZE_BILINEAR;
ptr->filter_param_a_uv = NAN;
ptr->filter_param_b_uv = NAN;
ptr->dither_type = ZIMG_DITHER_NONE;
ptr->cpu_type = ZIMG_CPU_AUTO;
}
if (version >= API_VERSION_2_2) {
ptr->nominal_peak_luminance = NAN;
ptr->allow_approximate_gamma = 0;
}
}
zimg_filter_graph *zimg_filter_graph_build(const zimg_image_format *src_format, const zimg_image_format *dst_format, const zimg_graph_builder_params *params)
{
zassert_d(src_format, "null pointer");
zassert_d(dst_format, "null pointer");
try {
zimg::graph::GraphBuilder::state src_state;
zimg::graph::GraphBuilder::state dst_state;
zimg::graph::GraphBuilder::params graph_params;
std::unique_ptr<zimg::resize::Filter> filters[2];
std::tie(src_state, dst_state) = import_graph_state(*src_format, *dst_format);
if (params)
graph_params = import_graph_params(*params, filters);
zimg::graph::GraphBuilder builder;
return builder.set_source(src_state)
.connect(dst_state, params ? &graph_params : nullptr)
.complete()
.release();
} catch (...) {
handle_exception(std::current_exception());
return nullptr;
}
}