Support for PCMA and PCMU raw audio data in RTP/RTSP. (b6723735) · Commits · e / os / android_frameworks_base

media/libstagefright/rtsp/APacketSource.cpp

+3 −0

Original line number	Diff line number	Diff line
		@@ -20,6 +20,7 @@

		#include "APacketSource.h"

		#include "ARawAudioAssembler.h"
		#include "ASessionDescription.h"

		#include "avc_utils.h"
		@@ -661,6 +662,8 @@ APacketSource::APacketSource(
		mFormat->setData(
		kKeyESDS, 0,
		codecSpecificData->data(), codecSpecificData->size());
		} else if (ARawAudioAssembler::Supports(desc.c_str())) {
		ARawAudioAssembler::MakeFormat(desc.c_str(), mFormat);
		} else {
		mInitCheck = ERROR_UNSUPPORTED;
		}

media/libstagefright/rtsp/ARTPSource.cpp

+3 −0

Original line number	Diff line number	Diff line
		@@ -25,6 +25,7 @@
		#include "AH263Assembler.h"
		#include "AMPEG4AudioAssembler.h"
		#include "AMPEG4ElementaryAssembler.h"
		#include "ARawAudioAssembler.h"
		#include "ASessionDescription.h"

		#include <media/stagefright/foundation/ABuffer.h>
		@@ -70,6 +71,8 @@ ARTPSource::ARTPSource(
		\|\| !strncasecmp(desc.c_str(), "mpeg4-generic/", 14)) {
		mAssembler = new AMPEG4ElementaryAssembler(notify, desc, params);
		mIssueFIRRequests = true;
		} else if (ARawAudioAssembler::Supports(desc.c_str())) {
		mAssembler = new ARawAudioAssembler(notify, desc.c_str(), params);
		} else {
		TRESPASS();
		}

media/libstagefright/rtsp/ARawAudioAssembler.cpp

0 → 100644

+143 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2011 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 "ARawAudioAssembler"
		#include <utils/Log.h>

		#include "ARawAudioAssembler.h"

		#include "ARTPSource.h"
		#include "ASessionDescription.h"

		#include <media/stagefright/foundation/ABuffer.h>
		#include <media/stagefright/foundation/ADebug.h>
		#include <media/stagefright/foundation/AMessage.h>
		#include <media/stagefright/foundation/hexdump.h>
		#include <media/stagefright/MediaDefs.h>
		#include <media/stagefright/MetaData.h>
		#include <media/stagefright/Utils.h>

		namespace android {

		ARawAudioAssembler::ARawAudioAssembler(
		const sp<AMessage> &notify, const char *desc, const AString &params)
		: mNotifyMsg(notify),
		mNextExpectedSeqNoValid(false),
		mNextExpectedSeqNo(0) {
		}

		ARawAudioAssembler::~ARawAudioAssembler() {
		}

		ARTPAssembler::AssemblyStatus ARawAudioAssembler::assembleMore(
		const sp<ARTPSource> &source) {
		return addPacket(source);
		}

		ARTPAssembler::AssemblyStatus ARawAudioAssembler::addPacket(
		const sp<ARTPSource> &source) {
		List<sp<ABuffer> > *queue = source->queue();

		if (queue->empty()) {
		return NOT_ENOUGH_DATA;
		}

		if (mNextExpectedSeqNoValid) {
		List<sp<ABuffer> >::iterator it = queue->begin();
		while (it != queue->end()) {
		if ((uint32_t)(*it)->int32Data() >= mNextExpectedSeqNo) {
		break;
		}

		it = queue->erase(it);
		}

		if (queue->empty()) {
		return NOT_ENOUGH_DATA;
		}
		}

		sp<ABuffer> buffer = *queue->begin();

		if (!mNextExpectedSeqNoValid) {
		mNextExpectedSeqNoValid = true;
		mNextExpectedSeqNo = (uint32_t)buffer->int32Data();
		} else if ((uint32_t)buffer->int32Data() != mNextExpectedSeqNo) {
		LOGV("Not the sequence number I expected");

		return WRONG_SEQUENCE_NUMBER;
		}

		// hexdump(buffer->data(), buffer->size());

		if (buffer->size() < 1) {
		queue->erase(queue->begin());
		++mNextExpectedSeqNo;

		LOGV("raw audio packet too short.");

		return MALFORMED_PACKET;
		}

		sp<AMessage> msg = mNotifyMsg->dup();
		msg->setObject("access-unit", buffer);
		msg->post();

		queue->erase(queue->begin());
		++mNextExpectedSeqNo;

		return OK;
		}

		void ARawAudioAssembler::packetLost() {
		CHECK(mNextExpectedSeqNoValid);
		++mNextExpectedSeqNo;
		}

		void ARawAudioAssembler::onByeReceived() {
		sp<AMessage> msg = mNotifyMsg->dup();
		msg->setInt32("eos", true);
		msg->post();
		}

		// static
		bool ARawAudioAssembler::Supports(const char *desc) {
		return !strncmp(desc, "PCMU/", 5)
		\|\| !strncmp(desc, "PCMA/", 5);
		}

		// static
		void ARawAudioAssembler::MakeFormat(
		const char *desc, const sp<MetaData> &format) {
		if (!strncmp(desc, "PCMU/", 5)) {
		format->setCString(kKeyMIMEType, MEDIA_MIMETYPE_AUDIO_G711_MLAW);
		} else if (!strncmp(desc, "PCMA/", 5)) {
		format->setCString(kKeyMIMEType, MEDIA_MIMETYPE_AUDIO_G711_ALAW);
		} else {
		TRESPASS();
		}

		int32_t sampleRate, numChannels;
		ASessionDescription::ParseFormatDesc(
		desc, &sampleRate, &numChannels);

		format->setInt32(kKeySampleRate, sampleRate);
		format->setInt32(kKeyChannelCount, numChannels);
		}

		} // namespace android

media/libstagefright/rtsp/ARawAudioAssembler.h

0 → 100644

+60 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2011 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.
		*/

		#ifndef A_RAW_AUDIO_ASSEMBLER_H_

		#define A_RAW_AUDIO_ASSEMBLER_H_

		#include "ARTPAssembler.h"

		namespace android {

		struct AMessage;
		struct AString;
		struct MetaData;

		struct ARawAudioAssembler : public ARTPAssembler {
		ARawAudioAssembler(
		const sp<AMessage> &notify,
		const char *desc, const AString &params);

		static bool Supports(const char *desc);

		static void MakeFormat(
		const char *desc, const sp<MetaData> &format);

		protected:
		virtual ~ARawAudioAssembler();

		virtual AssemblyStatus assembleMore(const sp<ARTPSource> &source);
		virtual void onByeReceived();
		virtual void packetLost();

		private:
		bool mIsWide;

		sp<AMessage> mNotifyMsg;
		bool mNextExpectedSeqNoValid;
		uint32_t mNextExpectedSeqNo;

		AssemblyStatus addPacket(const sp<ARTPSource> &source);

		DISALLOW_EVIL_CONSTRUCTORS(ARawAudioAssembler);
		};

		} // namespace android

		#endif // A_RAW_AUDIO_ASSEMBLER_H_

media/libstagefright/rtsp/Android.mk

+1 −0

Original line number	Diff line number	Diff line
		@@ -9,6 +9,7 @@ LOCAL_SRC_FILES:= \
		AMPEG4AudioAssembler.cpp \
		AMPEG4ElementaryAssembler.cpp \
		APacketSource.cpp \
		ARawAudioAssembler.cpp \
		ARTPAssembler.cpp \
		ARTPConnection.cpp \
		ARTPSource.cpp \