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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.
*/
#include <binder/ProcessState.h>
#include <media/mediarecorder.h>
#include <media/stagefright/foundation/ADebug.h>
#include <media/stagefright/AMRWriter.h>
#include <media/stagefright/AudioPlayer.h>
#include <media/stagefright/AudioSource.h>
#include <media/stagefright/MediaDefs.h>
#include <media/stagefright/MetaData.h>
#include <media/stagefright/OMXClient.h>
#include <media/stagefright/OMXCodec.h>
#include "SineSource.h"
using namespace android;
static void usage(const char* name)
{
fprintf(stderr, "Usage: %s [-d duration] [-m] [-w] [<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, " <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;
int ch;
while ((ch = getopt(argc, argv, "d:mw")) != -1) {
switch (ch) {
case 'd':
duration = atoi(optarg);
break;
case 'm':
useMic = true;
break;
case 'w':
outputWBAMR = true;
break;
default:
usage(argv[0]);
return -1;
}
}
argc -= optind;
argv += optind;
if (argc == 1) {
fileOut = argv[0];
}
const int32_t kSampleRate = outputWBAMR ? 16000 : 8000;
const int32_t kBitRate = outputWBAMR ? 16000 : 8000;
android::ProcessState::self()->startThreadPool();
OMXClient client;
CHECK_EQ(client.connect(), (status_t)OK);
sp<MediaSource> source;
if (useMic) {
// talk into the appropriate microphone for the duration
source = new AudioSource(
AUDIO_SOURCE_MIC,
kSampleRate,
channels);
} else {
// use a sine source at 500 hz.
source = new SineSource(kSampleRate, channels);
}
sp<MetaData> meta = new MetaData;
meta->setCString(
kKeyMIMEType,
outputWBAMR ? MEDIA_MIMETYPE_AUDIO_AMR_WB
: MEDIA_MIMETYPE_AUDIO_AMR_NB);
meta->setInt32(kKeyChannelCount, channels);
meta->setInt32(kKeySampleRate, kSampleRate);
meta->setInt32(kKeyBitRate, kBitRate);
int32_t maxInputSize;
if (source->getFormat()->findInt32(kKeyMaxInputSize, &maxInputSize)) {
meta->setInt32(kKeyMaxInputSize, maxInputSize);
}
sp<MediaSource> encoder = OMXCodec::Create(
client.interface(),
meta, true /* createEncoder */,
source);
if (fileOut != NULL) {
// target file specified, write encoded AMR output
sp<AMRWriter> writer = new AMRWriter(fileOut);
writer->addSource(encoder);
writer->start();
sleep(duration);
writer->stop();
} else {
// otherwise decode to speaker
sp<MediaSource> decoder = OMXCodec::Create(
client.interface(),
meta, false /* createEncoder */,
encoder);
if (playToSpeaker) {
AudioPlayer *player = new AudioPlayer(NULL);
player->setSource(decoder);
player->start();
sleep(duration);
source->stop(); // must stop source otherwise delete player will hang
delete player; // there is no player->stop()...
} else {
CHECK_EQ(decoder->start(), (status_t)OK);
MediaBuffer* 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);
}
}
return 0;
}
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