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/*
* 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 "audioloop"
#include <utils/Log.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <utils/String16.h>
#include <binder/ProcessState.h>
#include <media/mediarecorder.h>
#include <media/stagefright/foundation/ADebug.h>
#include <media/stagefright/foundation/AMessage.h>
#include <media/stagefright/AMRWriter.h>
#include <media/stagefright/AudioSource.h>
#include <media/stagefright/MediaCodecSource.h>
#include <media/stagefright/MediaDefs.h>
#include <media/stagefright/SimpleDecodingSource.h>
#include "AudioPlayer.h"
#include "SineSource.h"
using namespace android;
static void usage(const char* name)
{
fprintf(stderr, "Usage: %s [-d du.ration] [-m] [-w] [-N name] [<output-file>]\n", name);
fprintf(stderr, "Encodes either a sine wave or microphone input to AMR format\n");
fprintf(stderr, " -d duration in seconds, default 5 seconds\n");
fprintf(stderr, " -m use microphone for input, default sine source\n");
fprintf(stderr, " -w use AMR wideband (default narrowband)\n");
fprintf(stderr, " -N name of the encoder; must be set with -M\n");
fprintf(stderr, " -M media type of the encoder; must be set with -N\n");
fprintf(stderr, " <output-file> output file for AMR encoding,"
" if unspecified, decode to speaker.\n");
}
int main(int argc, char* argv[])
{
static const int channels = 1; // not permitted to be stereo now
unsigned duration = 5;
bool useMic = false;
bool outputWBAMR = false;
bool playToSpeaker = true;
const char* fileOut = NULL;
AString name;
AString mediaType;
int ch;
while ((ch = getopt(argc, argv, "d:mwN:M:")) != -1) {
switch (ch) {
case 'd':
duration = atoi(optarg);
break;
case 'm':
useMic = true;
break;
case 'w':
outputWBAMR = true;
break;
case 'N':
name.setTo(optarg);
break;
case 'M':
mediaType.setTo(optarg);
break;
default:
usage(argv[0]);
return -1;
}
}
argc -= optind;
argv += optind;
if (argc == 1) {
fileOut = argv[0];
}
if ((name.empty() && !mediaType.empty()) || (!name.empty() && mediaType.empty())) {
fprintf(stderr, "-N and -M must be set together\n");
usage(argv[0]);
return -1;
}
if (!name.empty() && fileOut != NULL) {
fprintf(stderr, "-N and -M cannot be used with <output file>\n");
usage(argv[0]);
return -1;
}
int32_t sampleRate = !name.empty() ? 44100 : outputWBAMR ? 16000 : 8000;
int32_t bitRate = sampleRate;
android::ProcessState::self()->startThreadPool();
sp<MediaSource> source;
if (useMic) {
// talk into the appropriate microphone for the duration
audio_attributes_t attr = AUDIO_ATTRIBUTES_INITIALIZER;
attr.source = AUDIO_SOURCE_MIC;
source = new AudioSource(
&attr,
String16(),
sampleRate,
channels);
} else {
// use a sine source at 500 hz.
source = new SineSource(sampleRate, channels);
}
sp<AMessage> meta = new AMessage;
if (name.empty()) {
meta->setString(
"mime",
outputWBAMR ? MEDIA_MIMETYPE_AUDIO_AMR_WB
: MEDIA_MIMETYPE_AUDIO_AMR_NB);
} else {
meta->setString("mime", mediaType);
meta->setString("testing-name", name);
}
meta->setInt32("channel-count", channels);
meta->setInt32("sample-rate", sampleRate);
meta->setInt32("bitrate", bitRate);
int32_t maxInputSize;
if (source->getFormat()->findInt32(kKeyMaxInputSize, &maxInputSize)) {
meta->setInt32("max-input-size", maxInputSize);
}
sp<ALooper> looper = new ALooper;
looper->setName("audioloop");
looper->start();
sp<MediaSource> encoder = MediaCodecSource::Create(looper, meta, source);
if (fileOut != NULL) {
// target file specified, write encoded AMR output
int fd = open(fileOut, O_CREAT | O_LARGEFILE | O_TRUNC | O_RDWR, S_IRUSR | S_IWUSR);
if (fd < 0) {
return 1;
}
sp<AMRWriter> writer = new AMRWriter(fd);
close(fd);
writer->addSource(encoder);
writer->start();
sleep(duration);
writer->stop();
} else {
// otherwise decode to speaker
sp<MediaSource> decoder = SimpleDecodingSource::Create(encoder);
if (playToSpeaker) {
AudioPlayer player(NULL);
player.setSource(decoder);
player.start();
sleep(duration);
ALOGI("Line: %d", __LINE__);
decoder.clear(); // must clear |decoder| otherwise delete player will hang.
ALOGI("Line: %d", __LINE__);
} else {
CHECK_EQ(decoder->start(), (status_t)OK);
MediaBufferBase* buffer;
while (decoder->read(&buffer) == OK) {
// do something with buffer (save it eventually?)
// need to stop after some count though...
putchar('.');
fflush(stdout);
buffer->release();
buffer = NULL;
}
CHECK_EQ(decoder->stop(), (status_t)OK);
}
ALOGI("Line: %d", __LINE__);
}
return 0;
}
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