CodecCapabilities NDK: Introduce AMediaCodecStore and AMediaCodecInfo.
Bug: 363320865
Test: manual
Change-Id: I8033b2cbad6ca5dd4e36fc90e90945fddd4f0db9
diff --git a/media/ndk/NdkMediaCodecStore.cpp b/media/ndk/NdkMediaCodecStore.cpp
new file mode 100644
index 0000000..d911593
--- /dev/null
+++ b/media/ndk/NdkMediaCodecStore.cpp
@@ -0,0 +1,254 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+//#define LOG_NDEBUG 0
+#define LOG_TAG "NdkMediaCodecStore"
+
+#include "NdkMediaCodecInfoPriv.h"
+
+#include <media/NdkMediaCodecStore.h>
+#include <media/NdkMediaFormatPriv.h>
+
+#include <media/IMediaCodecList.h>
+
+#include <media/MediaCodecInfo.h>
+#include <media/stagefright/foundation/AMessage.h>
+#include <media/stagefright/foundation/ADebug.h>
+#include <media/stagefright/MediaCodecConstants.h>
+#include <media/stagefright/MediaCodecList.h>
+
+using namespace android;
+
+static sp<IMediaCodecList> sCodecList;
+static std::vector<AMediaCodecSupportedMediaType> sMediaTypes;
+static std::vector<AMediaCodecInfo> sCodecInfos;
+
+static std::map<std::string, AMediaCodecInfo> sNameToInfoMap;
+static std::map<std::string, std::vector<AMediaCodecInfo>> sTypeToInfoList;
+
+static void initMediaTypes() {
+ if (sCodecList == nullptr) {
+ sCodecList = MediaCodecList::getInstance();
+ }
+
+ std::map<std::string, AMediaCodecSupportedMediaType> typesInfoMap;
+ std::vector<std::string> mediaTypes; // Keep the order of media types appearing in sCodecList.
+ for (size_t idx = 0; idx < sCodecList->countCodecs(); idx++) {
+ sp<MediaCodecInfo> codecInfo = sCodecList->getCodecInfo(idx);
+ if (codecInfo == nullptr) {
+ ALOGW("NULL MediaCodecInfo in MediaCodecList");
+ continue;
+ }
+ Vector<AString> codecMediaTypes;
+ codecInfo->getSupportedMediaTypes(&codecMediaTypes);
+ for (AString codecMediaType : codecMediaTypes) {
+ std::string mediaType = std::string(codecMediaType.c_str());
+
+ // Excludes special codecs from NDK
+ const std::shared_ptr<CodecCapabilities> codecCaps
+ = codecInfo->getCodecCapsFor(mediaType.c_str());
+ if (codecCaps->isFeatureSupported(FEATURE_SpecialCodec)) {
+ continue;
+ }
+
+ auto it = typesInfoMap.find(mediaType);
+ if (it == typesInfoMap.end()) {
+ AMediaCodecSupportedMediaType supportedType = { mediaType.c_str(), 0 };
+ it = typesInfoMap.emplace(mediaType, supportedType).first;
+ mediaTypes.push_back(mediaType);
+ }
+ uint32_t &mode = it->second.mMode;
+ mode |= (codecInfo->isEncoder() ? AMediaCodecSupportedMediaType::FLAG_ENCODER
+ : AMediaCodecSupportedMediaType::FLAG_DECODER);
+ }
+ }
+
+ // sMediaTypes keeps the order of media types appearing in sCodecList.
+ for (std::string &type : mediaTypes) {
+ sMediaTypes.push_back(typesInfoMap.find(type)->second);
+ }
+}
+
+static void initCodecInfoMap() {
+ if (sCodecList == nullptr) {
+ sCodecList = MediaCodecList::getInstance();
+ }
+
+ for (size_t idx = 0; idx < sCodecList->countCodecs(); idx++) {
+ sp<MediaCodecInfo> codecInfo = sCodecList->getCodecInfo(idx);
+ if (codecInfo == nullptr) {
+ ALOGW("NULL MediaCodecInfo in MediaCodecList");
+ continue;
+ }
+
+ Vector<AString> codecMediaTypes;
+ codecInfo->getSupportedMediaTypes(&codecMediaTypes);
+ bool useTypeSuffix = codecMediaTypes.size() > 1;
+ for (AString codecMediaType : codecMediaTypes) {
+ std::string mediaType = std::string(codecMediaType.c_str());
+
+ // Excludes special codecs from NDK
+ const std::shared_ptr<CodecCapabilities> codecCaps
+ = codecInfo->getCodecCapsFor(mediaType.c_str());
+ if (codecCaps->isFeatureSupported(FEATURE_SpecialCodec)) {
+ continue;
+ }
+
+ // get the type name after the slash. e.g. video/x.on2.vp8
+ size_t slashIx = mediaType.find_last_of('/');
+ if (slashIx == std::string::npos) {
+ slashIx = 0;
+ } else {
+ slashIx++;
+ }
+ std::string ndkBaseName = std::string(codecInfo->getCodecName());
+ if (useTypeSuffix) {
+ // If there are multiple supported media types,
+ // add the type to the end of the name to disambiguate names.
+ ndkBaseName += "." + mediaType.substr(slashIx);
+ }
+
+ int32_t copyIx = 0;
+ std::string ndkName;
+ // if a name is already registered,
+ // add ".1", ".2", ... at the end to disambiguate names.
+ while (true) {
+ ndkName = ndkBaseName;
+ if (copyIx > 0) {
+ ndkName += "." + std::to_string(copyIx);
+ }
+ if (!sNameToInfoMap.contains(ndkName)) {
+ break;
+ }
+ copyIx++;
+ }
+
+ AMediaCodecInfo info = AMediaCodecInfo(ndkName, codecInfo, codecCaps, mediaType);
+ sCodecInfos.push_back(info);
+ sNameToInfoMap.emplace(ndkName, info);
+
+ auto it = sTypeToInfoList.find(mediaType);
+ if (it == sTypeToInfoList.end()) {
+ std::vector<AMediaCodecInfo> infoList;
+ infoList.push_back(info);
+ sTypeToInfoList.emplace(mediaType, infoList);
+ } else {
+ it->second.push_back(info);
+ }
+ }
+ }
+}
+
+static bool codecHandlesFormat(const AMediaCodecInfo codecInfo,
+ sp<AMessage> format, bool isEncoder) {
+ return codecInfo.mCodecCaps->isEncoder() == isEncoder
+ && codecInfo.mCodecCaps->isFormatSupported(format);
+}
+
+static media_status_t findNextCodecForFormat(
+ const AMediaFormat *format, bool isEncoder, const AMediaCodecInfo **outCodecInfo) {
+ if (outCodecInfo == nullptr) {
+ return AMEDIA_ERROR_INVALID_PARAMETER;
+ }
+
+ if (sCodecInfos.empty()) {
+ initCodecInfoMap();
+ }
+
+ std::unique_ptr<std::vector<AMediaCodecInfo>> infos;
+ sp<AMessage> nativeFormat;
+ if (format == nullptr) {
+ infos = std::unique_ptr<std::vector<AMediaCodecInfo>>(&sCodecInfos);
+ } else {
+ AMediaFormat_getFormat(format, &nativeFormat);
+ AString mime;
+ if (!nativeFormat->findString(KEY_MIME, &mime)) {
+ return AMEDIA_ERROR_INVALID_PARAMETER;
+ }
+
+ std::string mediaType = std::string(mime.c_str());
+ auto it = sTypeToInfoList.find(mediaType);
+ if (it == sTypeToInfoList.end()) {
+ return AMEDIA_ERROR_UNSUPPORTED;
+ }
+ infos = std::unique_ptr<std::vector<AMediaCodecInfo>>(&(it->second));
+ }
+
+ bool found = *outCodecInfo == nullptr;
+ for (const AMediaCodecInfo &info : *infos) {
+ if (found && (format == nullptr
+ || codecHandlesFormat(info, nativeFormat, isEncoder))) {
+ *outCodecInfo = &info;
+ return AMEDIA_OK;
+ }
+ if (*outCodecInfo == &info) {
+ found = true;
+ }
+
+ }
+ *outCodecInfo = nullptr;
+ return AMEDIA_ERROR_UNSUPPORTED;
+}
+
+extern "C" {
+
+EXPORT
+media_status_t AMediaCodecStore_getSupportedMediaTypes(
+ const AMediaCodecSupportedMediaType **outMediaTypes, size_t *outCount) {
+ if (outMediaTypes == nullptr) {
+ return AMEDIA_ERROR_INVALID_PARAMETER;
+ }
+
+ if (sMediaTypes.empty()) {
+ initMediaTypes();
+ }
+
+ *outCount = sMediaTypes.size();
+ *outMediaTypes = sMediaTypes.data();
+
+ return AMEDIA_OK;
+}
+
+EXPORT
+media_status_t AMediaCodecStore_findNextDecoderForFormat(
+ const AMediaFormat *format, const AMediaCodecInfo **outCodecInfo){
+ return findNextCodecForFormat(format, false, outCodecInfo);
+}
+
+EXPORT
+media_status_t AMediaCodecStore_findNextEncoderForFormat(
+ const AMediaFormat *format, const AMediaCodecInfo **outCodecInfo){
+ return findNextCodecForFormat(format, true, outCodecInfo);
+}
+
+EXPORT
+media_status_t AMediaCodecStore_getCodecInfo(
+ const char *name, const AMediaCodecInfo **outCodecInfo) {
+ if (outCodecInfo == nullptr || name == nullptr) {
+ return AMEDIA_ERROR_INVALID_PARAMETER;
+ }
+
+ auto it = sNameToInfoMap.find(std::string(name));
+ if (it == sNameToInfoMap.end()) {
+ *outCodecInfo = nullptr;
+ return AMEDIA_ERROR_UNSUPPORTED;
+ } else {
+ *outCodecInfo = &(it->second);
+ return AMEDIA_OK;
+ }
+}
+
+}
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