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/*
* 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> ¬ify,
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) {
ALOGV("Not the sequence number I expected");
return WRONG_SEQUENCE_NUMBER;
}
// hexdump(buffer->data(), buffer->size());
if (buffer->size() < 1) {
queue->erase(queue->begin());
++mNextExpectedSeqNo;
ALOGV("raw audio packet too short.");
return MALFORMED_PACKET;
}
sp<AMessage> msg = mNotifyMsg->dup();
msg->setBuffer("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
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