"write" methods for DVR recording (5f4ea35e) · Commits · e / os / android_frameworks_base

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

+16 −0

Original line number	Diff line number	Diff line
		@@ -712,6 +712,8 @@ public final class Tuner implements AutoCloseable {
		private native void nativeSetFileDescriptor(FileDescriptor fd);
		private native int nativeRead(int size);
		private native int nativeRead(byte[] bytes, int offset, int size);
		private native int nativeWrite(int size);
		private native int nativeWrite(byte[] bytes, int offset, int size);

		private Dvr() {}

		@@ -809,6 +811,20 @@ public final class Tuner implements AutoCloseable {
		}
		return nativeRead(bytes, offset, size);
		}

		/**
		* Writes recording data to file.
		*/
		public int write(int size) {
		return nativeWrite(size);
		}

		/**
		* Writes recording data to buffer.
		*/
		public int write(@NonNull byte[] bytes, int offset, int size) {
		return nativeWrite(bytes, offset, size);
		}
		}

		private Dvr openDvr(int type, int bufferSize) {

media/jni/android_media_tv_Tuner.cpp

+61 −2

Original line number	Diff line number	Diff line
		@@ -118,6 +118,10 @@ sp<IDvr> Dvr::getIDvr() {
		return mDvrSp;
		}

		DvrMQ& Dvr::getDvrMQ() {
		return *mDvrMQ;
		}

		/////////////// FilterCallback ///////////////////////
		//TODO: implement filter callback
		Return<void> FilterCallback::onFilterEvent(const DemuxFilterEvent& /filterEvent/) {
		@@ -1004,13 +1008,66 @@ static int android_media_tv_Tuner_read_dvr(JNIEnv *env, jobject dvr, jint size)
		return ret;
		}

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

		static int android_media_tv_Tuner_write_dvr(JNIEnv *env, jobject dvr, jint size) {
		sp<Dvr> dvrSp = getDvr(env, dvr);
		if (dvrSp == NULL) {
		ALOGW("Failed to write dvr: dvr not found");
		return 0;
		}

		if (dvrSp->mDvrMQ == NULL) {
		ALOGW("Failed to write dvr: dvr not configured");
		return 0;
		}

		DvrMQ& dvrMq = dvrSp->getDvrMQ();

		int available = dvrMq.availableToRead();
		int toRead = std::min(size, available);

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

		} else {
		ALOGE("dvrMq.beginRead failed");
		}

		return ret;
		}

		static int android_media_tv_Tuner_write_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 },
		@@ -1077,7 +1134,9 @@ static const JNINativeMethod gDvrMethods[] = {
		{ "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 },
		{ "nativeRead", "([BII)I", (void *)android_media_tv_Tuner_read_dvr_from_array },
		{ "nativeWrite", "(I)I", (void *)android_media_tv_Tuner_write_dvr },
		{ "nativeWrite", "([BII)I", (void *)android_media_tv_Tuner_write_dvr_to_array },
		};

		static const JNINativeMethod gLnbMethods[] = {

media/jni/android_media_tv_Tuner.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -85,6 +85,7 @@ struct Dvr : public RefBase {
		Dvr(sp<IDvr> sp, jweak obj);
		~Dvr();
		int close();
		DvrMQ& getDvrMQ();
		sp<IDvr> getIDvr();
		sp<IDvr> mDvrSp;
		jweak mDvrObj;