Some work to make audio encoding work.
diff --git a/cmds/stagefright/Android.mk b/cmds/stagefright/Android.mk
index ef67611..51a0649 100644
--- a/cmds/stagefright/Android.mk
+++ b/cmds/stagefright/Android.mk
@@ -24,6 +24,7 @@
include $(CLEAR_VARS)
LOCAL_SRC_FILES:= \
+ SineSource.cpp \
record.cpp
LOCAL_SHARED_LIBRARIES := \
diff --git a/cmds/stagefright/JPEGSource.cpp b/cmds/stagefright/JPEGSource.cpp
index a7994ed..4e9ca4e 100644
--- a/cmds/stagefright/JPEGSource.cpp
+++ b/cmds/stagefright/JPEGSource.cpp
@@ -102,7 +102,7 @@
meta->setCString(kKeyMIMEType, "image/jpeg");
meta->setInt32(kKeyWidth, mWidth);
meta->setInt32(kKeyHeight, mHeight);
- meta->setInt32(kKeyCompressedSize, mSize);
+ meta->setInt32(kKeyMaxInputSize, mSize);
return meta;
}
diff --git a/cmds/stagefright/SineSource.cpp b/cmds/stagefright/SineSource.cpp
new file mode 100644
index 0000000..3c25a7f
--- /dev/null
+++ b/cmds/stagefright/SineSource.cpp
@@ -0,0 +1,100 @@
+#include "SineSource.h"
+
+#include <math.h>
+
+#include <media/stagefright/MediaBufferGroup.h>
+#include <media/stagefright/MediaDebug.h>
+#include <media/stagefright/MetaData.h>
+
+namespace android {
+
+SineSource::SineSource(int32_t sampleRate, int32_t numChannels)
+ : mStarted(false),
+ mSampleRate(sampleRate),
+ mNumChannels(numChannels),
+ mPhase(0),
+ mGroup(NULL) {
+ CHECK(numChannels == 1 || numChannels == 2);
+}
+
+SineSource::~SineSource() {
+ if (mStarted) {
+ stop();
+ }
+}
+
+status_t SineSource::start(MetaData *params) {
+ CHECK(!mStarted);
+
+ mGroup = new MediaBufferGroup;
+ mGroup->add_buffer(new MediaBuffer(kBufferSize));
+
+ mPhase = 0;
+ mStarted = true;
+
+ return OK;
+}
+
+status_t SineSource::stop() {
+ CHECK(mStarted);
+
+ delete mGroup;
+ mGroup = NULL;
+
+ mStarted = false;
+
+ return OK;
+}
+
+sp<MetaData> SineSource::getFormat() {
+ sp<MetaData> meta = new MetaData;
+ meta->setCString(kKeyMIMEType, "audio/raw");
+ meta->setInt32(kKeyChannelCount, mNumChannels);
+ meta->setInt32(kKeySampleRate, mSampleRate);
+
+ return meta;
+}
+
+status_t SineSource::read(
+ MediaBuffer **out, const ReadOptions *options) {
+ *out = NULL;
+
+ MediaBuffer *buffer;
+ status_t err = mGroup->acquire_buffer(&buffer);
+
+ if (err != OK) {
+ return err;
+ }
+
+ size_t frameSize = mNumChannels * sizeof(int16_t);
+ size_t numFramesPerBuffer = buffer->size() / frameSize;
+
+ int16_t *ptr = (int16_t *)buffer->data();
+
+ const double k = kFrequency / mSampleRate * (2.0 * M_PI);
+
+ double x = mPhase * k;
+ for (size_t i = 0; i < numFramesPerBuffer; ++i) {
+ int16_t amplitude = (int16_t)(32767.0 * sin(x));
+
+ *ptr++ = amplitude;
+ if (mNumChannels == 2) {
+ *ptr++ = amplitude;
+ }
+
+ x += k;
+ }
+
+ buffer->meta_data()->setInt32(kKeyTimeUnits, mPhase);
+ buffer->meta_data()->setInt32(kKeyTimeScale, mSampleRate);
+
+ mPhase += numFramesPerBuffer;
+
+ buffer->set_range(0, numFramesPerBuffer * frameSize);
+
+ *out = buffer;
+
+ return OK;
+}
+
+} // namespace android
diff --git a/cmds/stagefright/SineSource.h b/cmds/stagefright/SineSource.h
new file mode 100644
index 0000000..76ab669
--- /dev/null
+++ b/cmds/stagefright/SineSource.h
@@ -0,0 +1,39 @@
+#ifndef SINE_SOURCE_H_
+
+#define SINE_SOURCE_H_
+
+#include <media/stagefright/MediaSource.h>
+
+namespace android {
+
+struct MediaBufferGroup;
+
+struct SineSource : public MediaSource {
+ SineSource(int32_t sampleRate, int32_t numChannels);
+
+ virtual status_t start(MetaData *params);
+ virtual status_t stop();
+
+ virtual sp<MetaData> getFormat();
+
+ virtual status_t read(
+ MediaBuffer **out, const ReadOptions *options = NULL);
+
+protected:
+ virtual ~SineSource();
+
+private:
+ enum { kBufferSize = 8192 };
+ static const double kFrequency = 500.0;
+
+ bool mStarted;
+ int32_t mSampleRate;
+ int32_t mNumChannels;
+ size_t mPhase;
+
+ MediaBufferGroup *mGroup;
+};
+
+} // namespace android
+
+#endif // SINE_SOURCE_H_
diff --git a/cmds/stagefright/record.cpp b/cmds/stagefright/record.cpp
index 4b44761..c049594 100644
--- a/cmds/stagefright/record.cpp
+++ b/cmds/stagefright/record.cpp
@@ -14,7 +14,10 @@
* limitations under the License.
*/
+#include "SineSource.h"
+
#include <binder/ProcessState.h>
+#include <media/stagefright/AudioPlayer.h>
#include <media/stagefright/CameraSource.h>
#include <media/stagefright/MediaBufferGroup.h>
#include <media/stagefright/MediaDebug.h>
@@ -24,9 +27,11 @@
#include <media/stagefright/MmapSource.h>
#include <media/stagefright/OMXClient.h>
#include <media/stagefright/OMXCodec.h>
+#include <media/MediaPlayerInterface.h>
using namespace android;
+#if 0
class DummySource : public MediaSource {
public:
DummySource(int width, int height)
@@ -158,7 +163,7 @@
OMXCodec::Create(
client.interface(), enc_meta, true /* createEncoder */, decoder);
-#if 1
+#if 0
sp<MPEG4Writer> writer = new MPEG4Writer("/sdcard/output.mp4");
writer->addSource(enc_meta, encoder);
writer->start();
@@ -204,4 +209,60 @@
return 0;
}
+#endif
+
+int main(int argc, char **argv) {
+ android::ProcessState::self()->startThreadPool();
+
+ OMXClient client;
+ CHECK_EQ(client.connect(), OK);
+
+ const int32_t kSampleRate = 22050;
+ const int32_t kNumChannels = 2;
+ sp<MediaSource> audioSource = new SineSource(kSampleRate, kNumChannels);
+
+#if 0
+ sp<MediaPlayerBase::AudioSink> audioSink;
+ AudioPlayer *player = new AudioPlayer(audioSink);
+ player->setSource(audioSource);
+ player->start();
+
+ sleep(10);
+
+ player->stop();
+#endif
+
+ sp<MetaData> encMeta = new MetaData;
+ encMeta->setCString(kKeyMIMEType, 1 ? "audio/3gpp" : "audio/mp4a-latm");
+ encMeta->setInt32(kKeySampleRate, kSampleRate);
+ encMeta->setInt32(kKeyChannelCount, kNumChannels);
+ encMeta->setInt32(kKeyMaxInputSize, 8192);
+
+ sp<MediaSource> encoder =
+ OMXCodec::Create(client.interface(), encMeta, true, audioSource);
+
+ encoder->start();
+
+ int32_t n = 0;
+ status_t err;
+ MediaBuffer *buffer;
+ while ((err = encoder->read(&buffer)) == OK) {
+ printf(".");
+ fflush(stdout);
+
+ buffer->release();
+ buffer = NULL;
+
+ if (++n == 10000) {
+ break;
+ }
+ }
+ printf("$\n");
+
+ encoder->stop();
+
+ client.disconnect();
+
+ return 0;
+}