Read data from file for DVR (ba21a7f8) · Commits · e / os / android_frameworks_base

media/java/android/media/tv/tuner/Tuner.java

+29 −0

Original line number	Diff line number	Diff line
		@@ -33,6 +33,7 @@ import android.os.Handler;
		import android.os.Looper;
		import android.os.Message;

		import java.io.FileDescriptor;
		import java.util.List;

		/**
		@@ -708,6 +709,9 @@ public final class Tuner implements AutoCloseable {
		private native int nativeStopDvr();
		private native int nativeFlushDvr();
		private native int nativeClose();
		private native void nativeSetFileDescriptor(FileDescriptor fd);
		private native int nativeRead(int size);
		private native int nativeRead(byte[] bytes, int offset, int size);

		private Dvr() {}

		@@ -780,6 +784,31 @@ public final class Tuner implements AutoCloseable {
		public int close() {
		return nativeClose();
		}

		/**
		* Sets file descriptor to read/write data.
		*/
		public void setFileDescriptor(FileDescriptor fd) {
		nativeSetFileDescriptor(fd);
		}

		/**
		* Reads data from the file for DVR playback.
		*/
		public int read(int size) {
		return nativeRead(size);
		}

		/**
		* Reads data from the buffer for DVR playback.
		*/
		public int read(@NonNull byte[] bytes, int offset, int size) {
		if (size + offset > bytes.length) {
		throw new ArrayIndexOutOfBoundsException(
		"Array length=" + bytes.length + ", offset=" + offset + ", size=" + size);
		}
		return nativeRead(bytes, offset, size);
		}
		}

		private Dvr openDvr(int type, int bufferSize) {

media/jni/Android.bp

+1 −0

Original line number	Diff line number	Diff line
		@@ -139,6 +139,7 @@ cc_library_shared {
		"libfmq",
		"libhidlbase",
		"liblog",
		"libnativehelper",
		"libutils",
		],

media/jni/android_media_tv_Tuner.cpp

+92 −3

Original line number	Diff line number	Diff line
		@@ -22,6 +22,7 @@

		#include <android/hardware/tv/tuner/1.0/ITuner.h>
		#include <media/stagefright/foundation/ADebug.h>
		#include <nativehelper/JNIHelp.h>

		#pragma GCC diagnostic ignored "-Wunused-function"

		@@ -92,7 +93,7 @@ Return<void> DvrCallback::onPlaybackStatus(PlaybackStatus /status/) {
		}

		void DvrCallback::setDvr(const jobject dvr) {
		ALOGD("FilterCallback::setDvr");
		ALOGD("DvrCallback::setDvr");
		JNIEnv *env = AndroidRuntime::getJNIEnv();
		mDvr = env->NewWeakGlobalRef(dvr);
		}
		@@ -101,6 +102,18 @@ void DvrCallback::setDvr(const jobject dvr) {

		Dvr::Dvr(sp<IDvr> sp, jweak obj) : mDvrSp(sp), mDvrObj(obj) {}

		Dvr::~Dvr() {
		EventFlag::deleteEventFlag(&mDvrMQEventFlag);
		}

		int Dvr::close() {
		Result r = mDvrSp->close();
		if (r == Result::SUCCESS) {
		EventFlag::deleteEventFlag(&mDvrMQEventFlag);
		}
		return (int)r;
		}

		sp<IDvr> Dvr::getIDvr() {
		return mDvrSp;
		}
		@@ -864,12 +877,28 @@ static int android_media_tv_Tuner_detach_filter(JNIEnv *env, jobject dvr, jobjec
		}

		static int android_media_tv_Tuner_configure_dvr(JNIEnv *env, jobject dvr, jobject settings) {
		sp<IDvr> dvrSp = getDvr(env, dvr)->getIDvr();
		sp<Dvr> dvrSp = getDvr(env, dvr);
		sp<IDvr> iDvrSp = dvrSp->getIDvr();
		if (dvrSp == NULL) {
		ALOGD("Failed to configure dvr: dvr not found");
		return (int)Result::INVALID_STATE;
		}
		Result result = dvrSp->configure(getDvrSettings(env, settings));
		Result result = iDvrSp->configure(getDvrSettings(env, settings));
		MQDescriptorSync<uint8_t> dvrMQDesc;
		if (result == Result::SUCCESS) {
		Result getQueueDescResult = Result::UNKNOWN_ERROR;
		iDvrSp->getQueueDesc(
		[&](Result r, const MQDescriptorSync<uint8_t>& desc) {
		dvrMQDesc = desc;
		getQueueDescResult = r;
		ALOGD("getDvrQueueDesc");
		});
		if (getQueueDescResult == Result::SUCCESS) {
		dvrSp->mDvrMQ = std::make_unique<DvrMQ>(dvrMQDesc, true);
		EventFlag::createEventFlag(
		dvrSp->mDvrMQ->getEventFlagWord(), &(dvrSp->mDvrMQEventFlag));
		}
		}
		return (int)result;
		}

		@@ -927,6 +956,62 @@ static int android_media_tv_Tuner_close_lnb(JNIEnv*, jobject) {
		return 0;
		}

		static void android_media_tv_Tuner_dvr_set_fd(JNIEnv *env, jobject dvr, jobject jfd) {
		sp<Dvr> dvrSp = getDvr(env, dvr);
		if (dvrSp == NULL) {
		ALOGD("Failed to set FD for dvr: dvr not found");
		}
		dvrSp->mFd = jniGetFDFromFileDescriptor(env, jfd);
		ALOGD("set fd = %d", dvrSp->mFd);
		}

		static int android_media_tv_Tuner_read_dvr(JNIEnv *env, jobject dvr, jint size) {
		sp<Dvr> dvrSp = getDvr(env, dvr);
		if (dvrSp == NULL) {
		ALOGD("Failed to read dvr: dvr not found");
		}

		int available = dvrSp->mDvrMQ->availableToWrite();
		int write = std::min(size, available);

		DvrMQ::MemTransaction tx;
		int ret = 0;
		if (dvrSp->mDvrMQ->beginWrite(write, &tx)) {
		auto first = tx.getFirstRegion();
		auto data = first.getAddress();
		int length = first.getLength();
		int firstToWrite = std::min(length, write);
		ret = read(dvrSp->mFd, data, firstToWrite);
		if (ret < firstToWrite) {
		ALOGW("[DVR] file to MQ, first region: %d bytes to write, but %d bytes written",
		firstToWrite, ret);
		} else if (firstToWrite < write) {
		ALOGD("[DVR] write second region: %d bytes written, %d bytes in total", ret, write);
		auto second = tx.getSecondRegion();
		data = second.getAddress();
		length = second.getLength();
		int secondToWrite = std::min(length, write - firstToWrite);
		ret += read(dvrSp->mFd, data, secondToWrite);
		}
		ALOGD("[DVR] file to MQ: %d bytes need to be written, %d bytes written", write, ret);
		if (!dvrSp->mDvrMQ->commitWrite(ret)) {
		ALOGE("[DVR] Error: failed to commit write!");
		}

		} else {
		ALOGE("dvrMq.beginWrite failed");
		}
		return ret;
		}

		static int android_media_tv_Tuner_read_dvr_to_array(
		JNIEnv /* env /, jobject /* dvr /, jbyteArray / bytes /, jint / offset */,
		jint /* size */) {
		//TODO: impl
		return 0;
		}


		static const JNINativeMethod gTunerMethods[] = {
		{ "nativeInit", "()V", (void *)android_media_tv_Tuner_native_init },
		{ "nativeSetup", "()V", (void *)android_media_tv_Tuner_native_setup },
		@@ -989,6 +1074,10 @@ static const JNINativeMethod gDvrMethods[] = {
		{ "nativeStopDvr", "()I", (void *)android_media_tv_Tuner_stop_dvr },
		{ "nativeFlushDvr", "()I", (void *)android_media_tv_Tuner_flush_dvr },
		{ "nativeClose", "()I", (void *)android_media_tv_Tuner_close_dvr },
		{ "nativeSetFileDescriptor", "(Ljava/io/FileDescriptor;)V",
		(void *)android_media_tv_Tuner_dvr_set_fd },
		{ "nativeRead", "(I)I", (void *)android_media_tv_Tuner_read_dvr },
		{ "nativeRead", "([BII)I", (void *)android_media_tv_Tuner_read_dvr_to_array },
		};

		static const JNINativeMethod gLnbMethods[] = {

media/jni/android_media_tv_Tuner.h

+9 −0

Original line number	Diff line number	Diff line
		@@ -19,6 +19,8 @@

		#include <android/hardware/tv/tuner/1.0/ITuner.h>
		#include <fmq/MessageQueue.h>
		#include <fstream>
		#include <string>
		#include <unordered_map>
		#include <utils/RefBase.h>

		@@ -58,6 +60,7 @@ using ::android::hardware::tv::tuner::V1_0::PlaybackStatus;
		using ::android::hardware::tv::tuner::V1_0::RecordStatus;

		using FilterMQ = MessageQueue<uint8_t, kSynchronizedReadWrite>;
		using DvrMQ = MessageQueue<uint8_t, kSynchronizedReadWrite>;

		namespace android {

		@@ -80,9 +83,15 @@ private:

		struct Dvr : public RefBase {
		Dvr(sp<IDvr> sp, jweak obj);
		~Dvr();
		int close();
		sp<IDvr> getIDvr();
		sp<IDvr> mDvrSp;
		jweak mDvrObj;
		std::unique_ptr<DvrMQ> mDvrMQ;
		EventFlag* mDvrMQEventFlag;
		std::string mFilePath;
		int mFd;
		};

		struct FilterCallback : public IFilterCallback {