1 files changed, 491 insertions, 0 deletions
diff --git a/third_party/dav1d/meson.build b/third_party/dav1d/meson.build
new file mode 100644
index 0000000000..bab318857e
--- /dev/null
+++ b/third_party/dav1d/meson.build
@@ -0,0 +1,491 @@
+# Copyright © 2018-2022, VideoLAN and dav1d authors
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+# 1. Redistributions of source code must retain the above copyright notice, this
+#    list of conditions and the following disclaimer.
+#
+# 2. Redistributions in binary form must reproduce the above copyright notice,
+#    this list of conditions and the following disclaimer in the documentation
+#    and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+project('dav1d', ['c'],
+    version: '1.1.0',
+    default_options: ['c_std=c99',
+                      'warning_level=2',
+                      'buildtype=release',
+                      'b_ndebug=if-release'],
+    meson_version: '>= 0.49.0')
+
+dav1d_soname_version       = '6.8.0'
+dav1d_api_version_array    = dav1d_soname_version.split('.')
+dav1d_api_version_major    = dav1d_api_version_array[0]
+dav1d_api_version_minor    = dav1d_api_version_array[1]
+dav1d_api_version_revision = dav1d_api_version_array[2]
+
+dav1d_src_root = meson.current_source_dir()
+cc = meson.get_compiler('c')
+
+# Configuratin data for config.h
+cdata = configuration_data()
+
+# Configuration data for config.asm
+cdata_asm = configuration_data()
+
+# Include directories
+dav1d_inc_dirs = include_directories(['.', 'include/dav1d', 'include'])
+
+
+
+#
+# Option handling
+#
+
+# Bitdepth option
+dav1d_bitdepths = get_option('bitdepths')
+foreach bitdepth : ['8', '16']
+    cdata.set10('CONFIG_@0@BPC'.format(bitdepth), dav1d_bitdepths.contains(bitdepth))
+endforeach
+
+# ASM option
+is_asm_enabled = (get_option('enable_asm') == true and
+    (host_machine.cpu_family() == 'x86' or
+     (host_machine.cpu_family() == 'x86_64' and cc.get_define('__ILP32__').strip() == '') or
+     host_machine.cpu_family() == 'aarch64'      or
+     host_machine.cpu_family().startswith('arm') or
+     host_machine.cpu() == 'ppc64le'))
+cdata.set10('HAVE_ASM', is_asm_enabled)
+
+if is_asm_enabled and get_option('b_sanitize') == 'memory'
+    error('asm causes false positive with memory sanitizer. Use \'-Denable_asm=false\'.')
+endif
+
+cdata.set10('TRIM_DSP_FUNCTIONS', get_option('trim_dsp') == 'true' or
+    (get_option('trim_dsp') == 'if-release' and get_option('buildtype') == 'release'))
+
+# Logging option
+cdata.set10('CONFIG_LOG', get_option('logging'))
+
+#
+# OS/Compiler checks and defines
+#
+
+# Arguments in test_args will be used even on feature tests
+test_args = []
+
+optional_arguments = []
+optional_link_arguments = []
+
+if host_machine.system() in ['linux', 'gnu', 'emscripten']
+    test_args += '-D_GNU_SOURCE'
+    add_project_arguments('-D_GNU_SOURCE', language: 'c')
+endif
+
+if host_machine.system() == 'windows'
+    cdata.set('_WIN32_WINNT',           '0x0601')
+    cdata.set('UNICODE',                1) # Define to 1 for Unicode (Wide Chars) APIs
+    cdata.set('_UNICODE',               1) # Define to 1 for Unicode (Wide Chars) APIs
+    cdata.set('__USE_MINGW_ANSI_STDIO', 1) # Define to force use of MinGW printf
+    cdata.set('_CRT_DECLARE_NONSTDC_NAMES', 1) # Define to get off_t from sys/types.h on MSVC
+    if cc.has_function('fseeko', prefix : '#include <stdio.h>', args : test_args)
+        cdata.set('_FILE_OFFSET_BITS', 64) # Not set by default by Meson on Windows
+    else
+        cdata.set('fseeko', '_fseeki64')
+        cdata.set('ftello', '_ftelli64')
+    endif
+
+    if host_machine.cpu_family() == 'x86_64'
+        if cc.get_argument_syntax() != 'msvc'
+            optional_link_arguments += '-Wl,--dynamicbase,--nxcompat,--tsaware,--high-entropy-va'
+        endif
+    elif host_machine.cpu_family() == 'x86' or host_machine.cpu_family() == 'arm'
+        if cc.get_argument_syntax() == 'msvc'
+            optional_link_arguments += '/largeaddressaware'
+        else
+            optional_link_arguments += '-Wl,--dynamicbase,--nxcompat,--tsaware,--large-address-aware'
+        endif
+    endif
+
+    # On Windows, we use a compatibility layer to emulate pthread
+    thread_dependency = []
+    thread_compat_dep = declare_dependency(sources : files('src/win32/thread.c'))
+
+    rt_dependency = []
+
+    rc_version_array = meson.project_version().split('.')
+    winmod = import('windows')
+    rc_data = configuration_data()
+    rc_data.set('PROJECT_VERSION_MAJOR', rc_version_array[0])
+    rc_data.set('PROJECT_VERSION_MINOR', rc_version_array[1])
+    rc_data.set('PROJECT_VERSION_REVISION', rc_version_array[2])
+    rc_data.set('API_VERSION_MAJOR', dav1d_api_version_major)
+    rc_data.set('API_VERSION_MINOR', dav1d_api_version_minor)
+    rc_data.set('API_VERSION_REVISION', dav1d_api_version_revision)
+    rc_data.set('COPYRIGHT_YEARS', '2018-2023')
+else
+    thread_dependency = dependency('threads')
+    thread_compat_dep = []
+
+    rt_dependency = []
+    if cc.has_function('clock_gettime', prefix : '#include <time.h>', args : test_args)
+        cdata.set('HAVE_CLOCK_GETTIME', 1)
+    elif host_machine.system() not in ['darwin', 'ios', 'tvos']
+        rt_dependency = cc.find_library('rt', required: false)
+        if not cc.has_function('clock_gettime', prefix : '#include <time.h>', args : test_args, dependencies : rt_dependency)
+            error('clock_gettime not found')
+        endif
+        cdata.set('HAVE_CLOCK_GETTIME', 1)
+    endif
+endif
+
+# check for fseeko on android. It is not always available if _FILE_OFFSET_BITS is defined to 64
+have_fseeko = true
+if host_machine.system() == 'android'
+    if not cc.has_function('fseeko', prefix : '#include <stdio.h>', args : test_args)
+        if cc.has_function('fseeko', prefix : '#include <stdio.h>', args : test_args + ['-U_FILE_OFFSET_BITS'])
+            warning('Files larger than 2 gigabytes might not be supported in the dav1d CLI tool.')
+            add_project_arguments('-U_FILE_OFFSET_BITS', language: 'c')
+        elif get_option('enable_tools')
+            error('dav1d CLI tool needs fseeko()')
+        else
+            have_fseeko = false
+        endif
+    endif
+endif
+
+libdl_dependency = []
+if host_machine.system() == 'linux'
+    libdl_dependency = cc.find_library('dl', required : false)
+    if cc.has_function('dlsym', prefix : '#include <dlfcn.h>', args : test_args, dependencies : libdl_dependency)
+        cdata.set('HAVE_DLSYM', 1)
+    endif
+endif
+
+libm_dependency = cc.find_library('m', required: false)
+
+
+# Header checks
+
+stdatomic_dependencies = []
+if not cc.check_header('stdatomic.h')
+    if cc.get_id() == 'msvc'
+        # we have a custom replacement for MSVC
+        stdatomic_dependencies += declare_dependency(
+            include_directories : include_directories('include/compat/msvc'),
+        )
+    elif cc.compiles('''int main() { int v = 0; return __atomic_fetch_add(&v, 1, __ATOMIC_SEQ_CST); }''',
+                     name : 'GCC-style atomics', args : test_args)
+        stdatomic_dependencies += declare_dependency(
+            include_directories : include_directories('include/compat/gcc'),
+        )
+    else
+        error('Atomics not supported')
+    endif
+endif
+
+if host_machine.cpu_family().startswith('wasm')
+    # enable atomics + bulk-memory features
+    stdatomic_dependencies += thread_dependency.partial_dependency(compile_args: true)
+endif
+
+if cc.check_header('unistd.h')
+    cdata.set('HAVE_UNISTD_H', 1)
+endif
+
+if cc.check_header('io.h')
+    cdata.set('HAVE_IO_H', 1)
+endif
+
+if cc.check_header('pthread_np.h')
+    cdata.set('HAVE_PTHREAD_NP_H', 1)
+    test_args += '-DHAVE_PTHREAD_NP_H'
+endif
+
+
+# Function checks
+
+if not cc.has_function('getopt_long', prefix : '#include <getopt.h>', args : test_args)
+    getopt_dependency = declare_dependency(
+        sources: files('tools/compat/getopt.c'),
+        include_directories : include_directories('include/compat'),
+    )
+else
+    getopt_dependency = []
+endif
+
+if cc.has_function('_aligned_malloc', prefix : '#include <malloc.h>', args : test_args)
+    cdata.set('HAVE_ALIGNED_MALLOC', 1)
+elif cc.has_function('posix_memalign', prefix : '#include <stdlib.h>', args : test_args)
+    cdata.set('HAVE_POSIX_MEMALIGN', 1)
+elif cc.has_function('memalign', prefix : '#include <malloc.h>', args : test_args)
+    cdata.set('HAVE_MEMALIGN', 1)
+endif
+
+if (host_machine.cpu_family() == 'aarch64' or
+    host_machine.cpu_family().startswith('arm') or
+    host_machine.cpu() == 'ppc64le')
+    if cc.has_function('getauxval', prefix : '#include <sys/auxv.h>', args : test_args)
+        cdata.set('HAVE_GETAUXVAL', 1)
+    endif
+    if cc.has_function('elf_aux_info', prefix : '#include <sys/auxv.h>', args : test_args)
+        cdata.set('HAVE_ELF_AUX_INFO', 1)
+    endif
+endif
+
+pthread_np_prefix = '''
+#include <pthread.h>
+#ifdef HAVE_PTHREAD_NP_H
+#include <pthread_np.h>
+#endif
+'''
+if cc.has_function('pthread_getaffinity_np', prefix : pthread_np_prefix, args : test_args, dependencies : thread_dependency)
+    cdata.set('HAVE_PTHREAD_GETAFFINITY_NP', 1)
+endif
+if cc.has_function('pthread_setaffinity_np', prefix : pthread_np_prefix, args : test_args, dependencies : thread_dependency)
+    cdata.set('HAVE_PTHREAD_SETAFFINITY_NP', 1)
+endif
+
+if cc.compiles('int x = _Generic(0, default: 0);', name: '_Generic', args: test_args)
+    cdata.set('HAVE_C11_GENERIC', 1)
+endif
+
+# Compiler flag tests
+
+if cc.has_argument('-fvisibility=hidden')
+    add_project_arguments('-fvisibility=hidden', language: 'c')
+else
+    warning('Compiler does not support -fvisibility=hidden, all symbols will be public!')
+endif
+
+# Compiler flags that should be set
+# But when the compiler does not supports them
+# it is not an error and silently tolerated
+if cc.get_argument_syntax() != 'msvc'
+    optional_arguments += [
+      '-Wundef',
+      '-Werror=vla',
+      '-Wno-maybe-uninitialized',
+      '-Wno-missing-field-initializers',
+      '-Wno-unused-parameter',
+      '-Wstrict-prototypes',
+      '-Werror=missing-prototypes',
+      '-Wshorten-64-to-32',
+    ]
+    if host_machine.cpu_family() == 'x86'
+        optional_arguments += [
+          '-msse2',
+          '-mfpmath=sse',
+        ]
+    endif
+else
+    optional_arguments += [
+      '-wd4028', # parameter different from declaration
+      '-wd4090', # broken with arrays of pointers
+      '-wd4996'  # use of POSIX functions
+    ]
+endif
+
+if (get_option('buildtype') != 'debug' and get_option('buildtype') != 'plain')
+    optional_arguments += '-fomit-frame-pointer'
+    optional_arguments += '-ffast-math'
+endif
+
+if (host_machine.system() in ['darwin', 'ios', 'tvos'] and cc.get_id() == 'clang' and
+    cc.version().startswith('11'))
+    # Workaround for Xcode 11 -fstack-check bug, see #301
+    optional_arguments += '-fno-stack-check'
+endif
+
+add_project_arguments(cc.get_supported_arguments(optional_arguments), language : 'c')
+add_project_link_arguments(cc.get_supported_link_arguments(optional_link_arguments), language : 'c')
+
+# libFuzzer related things
+fuzzing_engine = get_option('fuzzing_engine')
+if fuzzing_engine == 'libfuzzer'
+    if not cc.has_argument('-fsanitize=fuzzer')
+        error('fuzzing_engine libfuzzer requires "-fsanitize=fuzzer"')
+    endif
+    fuzzer_args = ['-fsanitize=fuzzer-no-link', '-fsanitize=fuzzer']
+    add_project_arguments(cc.first_supported_argument(fuzzer_args), language : 'c')
+endif
+
+cdata.set10('ENDIANNESS_BIG', host_machine.endian() == 'big')
+
+if host_machine.cpu_family().startswith('x86')
+    if get_option('stack_alignment') > 0
+        stack_alignment = get_option('stack_alignment')
+    elif host_machine.cpu_family() == 'x86_64' or host_machine.system() in ['linux', 'darwin', 'ios', 'tvos']
+        stack_alignment = 16
+    else
+        stack_alignment = 4
+    endif
+    cdata_asm.set('STACK_ALIGNMENT', stack_alignment)
+endif
+
+cdata.set10('ARCH_AARCH64', host_machine.cpu_family() == 'aarch64' or host_machine.cpu() == 'arm64')
+cdata.set10('ARCH_ARM',     host_machine.cpu_family().startswith('arm') and host_machine.cpu() != 'arm64')
+if (is_asm_enabled and
+    (host_machine.cpu_family() == 'aarch64' or
+     host_machine.cpu_family().startswith('arm')))
+
+   as_func_code = '''__asm__ (
+".func meson_test"
+".endfunc"
+);
+'''
+    have_as_func = cc.compiles(as_func_code)
+    cdata.set10('HAVE_AS_FUNC', have_as_func)
+
+    # fedora package build infrastructure uses a gcc specs file to enable
+    # '-fPIE' by default. The chosen way only adds '-fPIE' to the C compiler
+    # with integrated preprocessor. It is not added to the standalone
+    # preprocessor or the preprocessing stage of '.S' files. So we have to
+    # compile code to check if we have to define PIC for the arm asm to
+    # avoid absolute relocations when building for example checkasm.
+    check_pic_code = '''
+#if defined(PIC)
+#error "PIC already defined"
+#elif !(defined(__PIC__) || defined(__pic__))
+#error "no pic"
+#endif
+'''
+    if cc.compiles(check_pic_code)
+        cdata.set('PIC', '3')
+    endif
+endif
+
+cdata.set10('ARCH_X86', host_machine.cpu_family().startswith('x86'))
+cdata.set10('ARCH_X86_64', host_machine.cpu_family() == 'x86_64')
+cdata.set10('ARCH_X86_32', host_machine.cpu_family() == 'x86')
+
+if host_machine.cpu_family().startswith('x86')
+    cdata_asm.set('private_prefix', 'dav1d')
+    cdata_asm.set10('ARCH_X86_64', host_machine.cpu_family() == 'x86_64')
+    cdata_asm.set10('ARCH_X86_32', host_machine.cpu_family() == 'x86')
+    cdata_asm.set10('PIC', true)
+
+    # Convert SSE asm into (128-bit) AVX when compiler flags are set to use AVX instructions
+    cdata_asm.set10('FORCE_VEX_ENCODING', cc.get_define('__AVX__').strip() != '')
+endif
+
+cdata.set10('ARCH_PPC64LE', host_machine.cpu() == 'ppc64le')
+
+# meson's cc.symbols_have_underscore_prefix() is unfortunately unrelieably
+# when additional flags like '-fprofile-instr-generate' are passed via CFLAGS
+# see following meson issue https://github.com/mesonbuild/meson/issues/5482
+if (host_machine.system() in ['darwin', 'ios', 'tvos'] or
+   (host_machine.system() == 'windows' and host_machine.cpu_family() == 'x86'))
+    cdata.set10('PREFIX', true)
+    cdata_asm.set10('PREFIX', true)
+endif
+
+#
+# ASM specific stuff
+#
+if is_asm_enabled and host_machine.cpu_family().startswith('x86')
+
+    # NASM compiler support
+
+    nasm = find_program('nasm')
+
+    # check NASM version
+    if nasm.found()
+        nasm_r = run_command(nasm, '-v', check: true)
+
+        out = nasm_r.stdout().strip().split()
+        if out[1].to_lower() == 'version'
+            if out[2].version_compare('<2.14')
+                error('nasm 2.14 or later is required, found nasm @0@'.format(out[2]))
+            endif
+        else
+            error('unexpected nasm version string: @0@'.format(nasm_r.stdout()))
+        endif
+    endif
+
+    # Generate config.asm
+    config_asm_target = configure_file(output: 'config.asm', output_format: 'nasm', configuration: cdata_asm)
+
+    if host_machine.system() == 'windows'
+        nasm_format = 'win'
+    elif host_machine.system() in ['darwin', 'ios', 'tvos']
+        nasm_format = 'macho'
+    else
+        nasm_format = 'elf'
+    endif
+    if host_machine.cpu_family() == 'x86_64'
+        nasm_format += '64'
+    else
+        nasm_format += '32'
+    endif
+
+    nasm_gen = generator(nasm,
+        output: '@BASENAME@.obj',
+        depfile: '@BASENAME@.obj.ndep',
+        arguments: [
+            '-f', nasm_format,
+            '-I', '@0@/src/'.format(dav1d_src_root),
+            '-I', '@0@/'.format(meson.current_build_dir()),
+            '-MQ', '@OUTPUT@', '-MF', '@DEPFILE@',
+            '@EXTRA_ARGS@',
+            '@INPUT@',
+            '-o', '@OUTPUT@'
+        ])
+endif
+
+use_gaspp = false
+if (is_asm_enabled and
+    (host_machine.cpu_family() == 'aarch64' or
+     host_machine.cpu_family().startswith('arm')) and
+    cc.get_argument_syntax() == 'msvc' and
+    (cc.get_id() != 'clang-cl' or meson.version().version_compare('<0.58.0')))
+    gaspp = find_program('gas-preprocessor.pl')
+    use_gaspp = true
+    gaspp_gen = generator(gaspp,
+        output: '@BASENAME@.obj',
+        arguments: [
+            '-as-type', 'armasm',
+            '-arch', host_machine.cpu_family(),
+            '--',
+            host_machine.cpu_family() == 'aarch64' ? 'armasm64' : 'armasm',
+            '-nologo',
+            '-I@0@'.format(dav1d_src_root),
+            '-I@0@/'.format(meson.current_build_dir()),
+            '@INPUT@',
+            '-c',
+            '-o', '@OUTPUT@'
+        ])
+endif
+
+# Generate config.h
+config_h_target = configure_file(output: 'config.h', configuration: cdata)
+
+
+
+#
+# Include subdir meson.build files
+# The order is important!
+
+subdir('include')
+
+subdir('doc')
+
+subdir('src')
+
+subdir('tools')
+
+subdir('examples')
+
+subdir('tests')