| //* Copyright 2024 The Dawn & Tint Authors |
| //* |
| //* 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. |
| //* |
| //* 3. Neither the name of the copyright holder nor the names of its |
| //* contributors may be used to endorse or promote products derived from |
| //* this software without specific prior written permission. |
| //* |
| //* 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 HOLDER 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. |
| #include <jni.h> |
| #include "dawn/webgpu.h" |
| #include "structures.h" |
| |
| // Converts Kotlin objects representing Dawn structures into native structures that can be passed |
| // into the native Dawn API. |
| |
| namespace dawn::kotlin_api { |
| |
| {% for structure in by_category['structure'] %} |
| void Convert(JNIEnv *env, jobject obj, {{ as_cType(structure.name) }}* converted) { |
| jclass clz = env->FindClass("{{ jni_name(structure) }}"); |
| |
| //* Convert each member in turn from corresponding members of the Kotlin object obtained via |
| //* JNI calls |
| {% for member in structure.members if include_structure_member(structure, member) %} |
| {% if member.length == 'strlen' %} { |
| jobject mObj = env->CallObjectMethod(obj, |
| env->GetMethodID(clz, "get{{ member.name.CamelCase() }}", |
| "()Ljava/lang/String;")); |
| if (mObj) { |
| //* TODO(b/330293719): free associated resources. |
| converted->{{ member.name.camelCase() }} = |
| env->GetStringUTFChars(static_cast<jstring>(mObj), 0); |
| } |
| } |
| {% elif member.constant_length == 1 %} { |
| {% if member.type.category == 'structure' %} |
| //* Convert optional structure if present. |
| jobject mObj = env->CallObjectMethod(obj, |
| env->GetMethodID(clz, "get{{ member.name.CamelCase() }}", |
| "()L{{ jni_name(member.type) }};")); |
| if (mObj) { |
| //* TODO(b/330293719): free associated resources. |
| auto convertedMember = new {{ as_cType(member.type.name) }}(); |
| Convert(env, mObj, convertedMember); |
| converted->{{ member.name.camelCase() }} = convertedMember; |
| } |
| {% elif member.type.name.get() == 'void' %} |
| converted->{{ member.name.camelCase() }} = reinterpret_cast<void*>( |
| env->CallLongMethod(obj, env->GetMethodID( |
| clz, "get{{ member.name.CamelCase() }}", "()J"))); |
| {% else %} |
| {{ unreachable_code() }} |
| {% endif %} |
| } |
| |
| {% elif member.length %} |
| {% if member.constant_length %} |
| {{ unreachable_code() }} |
| {% endif %} |
| //* Convert container, including the length field. |
| {% if member.type.name.get() == 'uint32_t' %} { |
| //* This container type is represented in Kotlin as a primitive array. |
| jintArray array = static_cast<jintArray>(env->CallObjectMethod(obj, |
| env->GetMethodID(clz, "get{{ member.name.CamelCase() }}", "()[I"))); |
| //* TODO(b/330293719): free associated resources. |
| converted->{{ member.name.camelCase() }} = |
| reinterpret_cast<{{ as_cType(member.type.name) }}*>( |
| env->GetIntArrayElements(array, 0)); |
| converted->{{ member.length.name.camelCase() }} = env->GetArrayLength(array); |
| } |
| {% else %} { |
| //* These container types are represented in Kotlin as arrays of objects. |
| jmethodID getMethod = env->GetMethodID(clz, |
| "get{{ member.name.CamelCase() }}", "()[L{{ jni_name(member.type) }};"); |
| auto in = static_cast<jobjectArray>(env->CallObjectMethod(obj, getMethod)); |
| size_t length = env->GetArrayLength(in); |
| //* TODO(b/330293719): free associated resources. |
| auto out = new {{ as_cType(member.type.name) }}[length](); |
| {% if member.type.category in ['bitmask', 'enum'] %} { |
| jclass memberClass = env->FindClass("{{ jni_name(member.type) }}"); |
| jmethodID getValue = env->GetMethodID(memberClass, "getValue", "()I"); |
| for (int idx = 0; idx != length; idx++) { |
| jobject element = env->GetObjectArrayElement(in, idx); |
| out[idx] = static_cast<{{ as_cType(member.type.name) }}>( |
| env->CallIntMethod(element, getValue)); |
| } |
| } |
| {% elif member.type.category == 'object' %} { |
| jclass memberClass = env->FindClass("{{ jni_name(member.type) }}"); |
| jmethodID getHandle = env->GetMethodID(memberClass, "getHandle", "()J"); |
| for (int idx = 0; idx != length; idx++) { |
| jobject element = env->GetObjectArrayElement(in, idx); |
| out[idx] = reinterpret_cast<{{ as_cType(member.type.name) }}>( |
| env->CallLongMethod(element, getHandle)); |
| } |
| } |
| {% elif member.type.category == 'structure' %} |
| for (int idx = 0; idx != length; idx++) { |
| Convert(env, env->GetObjectArrayElement(in, idx), out + idx); |
| } |
| {% else %} |
| {{ unreachable_code() }} |
| {% endif %} |
| converted->{{ member.name.camelCase() }} = out; |
| converted->{{ member.length.name.camelCase() }} = length; |
| } |
| {% endif %} |
| |
| //* From here members are single values. |
| {% elif member.type.category == 'object' %} { |
| jobject mObj = env->CallObjectMethod(obj, env->GetMethodID(clz, |
| "get{{ member.name.CamelCase() }}", "()L{{ jni_name(member.type) }};")); |
| if (mObj) { |
| jclass memberClass = env->FindClass("{{ jni_name(member.type) }}"); |
| jmethodID getHandle = env->GetMethodID(memberClass, "getHandle", "()J"); |
| converted->{{ member.name.camelCase() }} = |
| reinterpret_cast<{{ as_cType(member.type.name) }}>( |
| env->CallLongMethod(mObj, getHandle)); |
| } |
| } |
| {% elif member.type.category == 'structure' %} |
| //* Mandatory structure. |
| Convert(env, env->CallObjectMethod(obj, |
| env->GetMethodID(clz, "get{{ member.name.CamelCase() }}", |
| "()L{{ jni_name(member.type) }};")), |
| &converted->{{ member.name.camelCase() }}); |
| {% elif member.type.name.get() == 'bool' %} |
| converted->{{ member.name.camelCase() }} = env->CallBooleanMethod(obj, |
| env->GetMethodID(clz, "get{{ member.name.CamelCase() }}", "()Z")); |
| {% elif member.type.name.get() == 'uint16_t' %} |
| converted->{{ member.name.camelCase() }} = |
| static_cast<{{ as_cType(member.type.name) }}>(env->CallShortMethod(obj, |
| env->GetMethodID(clz, "get{{ member.name.CamelCase() }}", "()S"))); |
| {% elif member.type.name.get() in ['int', 'int32_t', 'uint32_t'] |
| or member.type.category in ['bitmask', 'enum'] %} |
| converted->{{ member.name.camelCase() }} = |
| static_cast<{{ as_cType(member.type.name) }}>(env->CallIntMethod(obj, |
| env->GetMethodID(clz, "get{{ member.name.CamelCase() }}", "()I"))); |
| {% elif member.type.name.get() == 'float' %} |
| converted->{{ member.name.camelCase() }} = env->CallFloatMethod(obj, |
| env->GetMethodID(clz, "get{{ member.name.CamelCase() }}", "()F")); |
| {% elif member.type.name.get() in ['size_t', 'uint64_t'] %} |
| converted->{{ member.name.camelCase() }} = |
| static_cast<{{ as_cType(member.type.name) }}>(env->CallLongMethod(obj, |
| env->GetMethodID(clz, "get{{ member.name.CamelCase() }}", "()J"))); |
| {% elif member.type.name.get() == 'double' %} |
| converted->{{ member.name.camelCase() }} = env->CallDoubleMethod(obj, |
| env->GetMethodID(clz, "get{{ member.name.CamelCase() }}", "()D")); |
| {% else %} |
| {{ unreachable_code() }} |
| {% endif %} |
| {% endfor %} |
| |
| //* Set up the chain type and links for child objects. |
| {% if structure.chained %} |
| converted->chain = {.sType = WGPUSType_{{ structure.name.CamelCase() }}}; |
| {% endif %} |
| |
| {% for child in chain_children[structure.name.get()] %} { |
| jobject child = env->CallObjectMethod(obj, |
| env->GetMethodID(clz, "get{{ child.name.CamelCase() }}", |
| "()L{{ jni_name(child) }};")); |
| if (child) { |
| //* TODO(b/330293719): free associated resources. |
| auto out = new {{ as_cType(child.name) }}(); |
| Convert(env, child, out); |
| out->chain.next = converted->nextInChain; |
| converted->nextInChain = &out->chain; |
| } |
| } |
| {% endfor %} |
| } |
| {% endfor %} |
| |
| } // namespace dawn::kotlin_api |
