WIP: MediaCodec and friends NDK APIs, plain C version

Change-Id: I9ed6b9c5afb026a1b5fe8b652e75635bbcc223df

1 files changed, 237 insertions, 0 deletions

diff --git a/media/ndk/NdkMediaCodec.cpp b/media/ndk/NdkMediaCodec.cpp
new file mode 100644
index 0000000..5412b9b
--- /dev/null
+++ b/media/ndk/NdkMediaCodec.cpp
@@ -0,0 +1,237 @@
+/*
+ * Copyright (C) 2014 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 "NdkMediaCodec"
+
+#include "NdkMediaCodec.h"
+#include "NdkMediaFormatPriv.h"
+
+#include <utils/Log.h>
+#include <utils/StrongPointer.h>
+#include <gui/Surface.h>
+
+#include <media/ICrypto.h>
+#include <media/stagefright/foundation/ALooper.h>
+#include <media/stagefright/foundation/AMessage.h>
+#include <media/stagefright/foundation/ABuffer.h>
+
+#include <media/stagefright/MediaCodec.h>
+#include <media/stagefright/MediaErrors.h>
+
+using namespace android;
+
+
+static int translate_error(status_t err) {
+    if (err == OK) {
+        return OK;
+    } else if (err == -EAGAIN) {
+        return AMEDIACODEC_INFO_TRY_AGAIN_LATER;
+    }
+    ALOGE("sf error code: %d", err);
+    return -1000;
+}
+
+
+class CodecHandler: public AHandler {
+public:
+    CodecHandler(sp<android::MediaCodec>);
+    virtual void onMessageReceived(const sp<AMessage> &msg);
+};
+
+CodecHandler::CodecHandler(sp<android::MediaCodec>) {
+
+}
+
+void CodecHandler::onMessageReceived(const sp<AMessage> &msg) {
+    ALOGI("handler got message %d", msg->what());
+}
+
+struct AMediaCodec {
+    sp<android::MediaCodec> mCodec;
+    sp<ALooper> mLooper;
+    sp<CodecHandler> mHandler;
+};
+
+extern "C" {
+
+static AMediaCodec * createAMediaCodec(const char *name, bool name_is_type, bool encoder) {
+    AMediaCodec *mData = new AMediaCodec();
+    mData->mLooper = new ALooper;
+    mData->mLooper->setName("NDK MediaCodec_looper");
+    status_t ret = mData->mLooper->start(
+            false,      // runOnCallingThread
+            true,       // canCallJava XXX
+            PRIORITY_FOREGROUND);
+    ALOGV("looper start: %d", ret);
+    if (name_is_type) {
+        mData->mCodec = android::MediaCodec::CreateByType(mData->mLooper, name, encoder);
+    } else {
+        mData->mCodec = android::MediaCodec::CreateByComponentName(mData->mLooper, name);
+    }
+    mData->mHandler = new CodecHandler(mData->mCodec);
+    mData->mLooper->registerHandler(mData->mHandler);
+    return mData;
+}
+
+
+AMediaCodec* AMediaCodec_createByCodecName(const char *name) {
+    return createAMediaCodec(name, false, false);
+}
+
+AMediaCodec* AMediaCodec_createByCodecType(const char *mime_type) {
+    return createAMediaCodec(mime_type, true, false);
+}
+
+AMediaCodec* AMediaCodec_createEncoderByName(const char *name) {
+    return createAMediaCodec(name, false, true);
+}
+
+int AMediaCodec_delete(AMediaCodec *mData) {
+    if (mData->mCodec != NULL) {
+        mData->mCodec->release();
+        mData->mCodec.clear();
+    }
+
+    if (mData->mLooper != NULL) {
+        mData->mLooper->unregisterHandler(mData->mHandler->id());
+        mData->mLooper->stop();
+        mData->mLooper.clear();
+    }
+    delete mData;
+    return OK;
+}
+
+int AMediaCodec_configure(AMediaCodec *mData, AMediaFormat *format, ANativeWindow* window) {
+    sp<AMessage> nativeFormat;
+    AMediaFormat_getFormat(format, &nativeFormat);
+    ALOGV("configure with format: %s", nativeFormat->debugString(0).c_str());
+    sp<Surface> surface = NULL;
+    if (window != NULL) {
+        surface = (Surface*) window;
+    }
+
+    return translate_error(mData->mCodec->configure(nativeFormat, surface, NULL, 0));
+}
+
+int AMediaCodec_start(AMediaCodec *mData) {
+    return translate_error(mData->mCodec->start());
+}
+
+int AMediaCodec_stop(AMediaCodec *mData) {
+    return translate_error(mData->mCodec->stop());
+}
+
+int AMediaCodec_flush(AMediaCodec *mData) {
+    return translate_error(mData->mCodec->flush());
+}
+
+ssize_t AMediaCodec_dequeueInputBuffer(AMediaCodec *mData, int64_t timeoutUs) {
+    size_t idx;
+    status_t ret = mData->mCodec->dequeueInputBuffer(&idx, timeoutUs);
+    if (ret == OK) {
+        return idx;
+    }
+    return translate_error(ret);
+}
+
+uint8_t* AMediaCodec_getInputBuffer(AMediaCodec *mData, size_t idx, size_t *out_size) {
+    android::Vector<android::sp<android::ABuffer> > abufs;
+    if (mData->mCodec->getInputBuffers(&abufs) == 0) {
+        size_t n = abufs.size();
+        if (idx >= n) {
+            ALOGE("buffer index %d out of range", idx);
+            return NULL;
+        }
+        if (out_size != NULL) {
+            *out_size = abufs[idx]->capacity();
+        }
+        return abufs[idx]->data();
+    }
+    ALOGE("couldn't get input buffers");
+    return NULL;
+}
+
+uint8_t* AMediaCodec_getOutputBuffer(AMediaCodec *mData, size_t idx, size_t *out_size) {
+    android::Vector<android::sp<android::ABuffer> > abufs;
+    if (mData->mCodec->getOutputBuffers(&abufs) == 0) {
+        size_t n = abufs.size();
+        if (idx >= n) {
+            ALOGE("buffer index %d out of range", idx);
+            return NULL;
+        }
+        if (out_size != NULL) {
+            *out_size = abufs[idx]->capacity();
+        }
+        return abufs[idx]->data();
+    }
+    ALOGE("couldn't get output buffers");
+    return NULL;
+}
+
+int AMediaCodec_queueInputBuffer(AMediaCodec *mData,
+        size_t idx, off_t offset, size_t size, uint64_t time, uint32_t flags) {
+
+    AString errorMsg;
+    status_t ret = mData->mCodec->queueInputBuffer(idx, offset, size, time, flags, &errorMsg);
+    return translate_error(ret);
+}
+
+ssize_t AMediaCodec_dequeueOutputBuffer(AMediaCodec *mData,
+        AMediaCodecBufferInfo *info, int64_t timeoutUs) {
+    size_t idx;
+    size_t offset;
+    size_t size;
+    uint32_t flags;
+    int64_t presentationTimeUs;
+    status_t ret = mData->mCodec->dequeueOutputBuffer(&idx, &offset, &size, &presentationTimeUs,
+            &flags, timeoutUs);
+
+    switch (ret) {
+        case OK:
+            info->offset = offset;
+            info->size = size;
+            info->flags = flags;
+            info->presentationTimeUs = presentationTimeUs;
+            return idx;
+        case -EAGAIN:
+            return AMEDIACODEC_INFO_TRY_AGAIN_LATER;
+        case android::INFO_FORMAT_CHANGED:
+            return AMEDIACODEC_INFO_OUTPUT_FORMAT_CHANGED;
+        case INFO_OUTPUT_BUFFERS_CHANGED:
+            return AMEDIACODEC_INFO_OUTPUT_BUFFERS_CHANGED;
+        default:
+            break;
+    }
+    return translate_error(ret);
+}
+
+AMediaFormat* AMediaCodec_getOutputFormat(AMediaCodec *mData) {
+    sp<AMessage> format;
+    mData->mCodec->getOutputFormat(&format);
+    return AMediaFormat_fromMsg(&format);
+}
+
+int AMediaCodec_releaseOutputBuffer(AMediaCodec *mData, size_t idx, bool render) {
+    if (render) {
+        return translate_error(mData->mCodec->renderOutputBufferAndRelease(idx));
+    } else {
+        return translate_error(mData->mCodec->releaseOutputBuffer(idx));
+    }
+}
+
+} // extern "C"
+