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* Copyright (C) 2010 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
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* See the License for the specific language governing permissions and
* limitations under the License.
#include <binder/IInterface.h>
namespace android {
struct AMessage;
struct IMemory;
struct IStreamListener;
struct IStreamSource : public IInterface {
virtual void setListener(const sp<IStreamListener> &listener) = 0;
virtual void setBuffers(const Vector<sp<IMemory> > &buffers) = 0;
virtual void onBufferAvailable(size_t index) = 0;
enum {
// Video PES packets contain exactly one (aligned) access unit.
kFlagAlignedVideoData = 1,
// Timestamps are in ALooper::GetNowUs() units.
kFlagIsRealTimeData = 2,
virtual uint32_t flags() const { return 0; }
struct IStreamListener : public IInterface {
enum Command {
virtual void queueBuffer(size_t index, size_t size) = 0;
// When signalling a discontinuity you can optionally
// specify an int64_t PTS timestamp in "msg".
// If present, rendering of data following the discontinuity
// will be suppressed until media time reaches this timestamp.
static const char *const kKeyResumeAtPTS;
// When signalling a discontinuity you can optionally
// specify the type(s) of discontinuity, i.e. if the
// audio format has changed, the video format has changed,
// time has jumped or any combination thereof.
// To do so, include a non-zero int32_t value
// under the key "kKeyDiscontinuityMask" when issuing the DISCONTINUITY
// command.
// If there is a change in audio/video format, The new logical stream
// must start with proper codec initialization
// information for playback to continue, i.e. SPS and PPS in the case
// of AVC video etc.
// If this key is not present, only a time discontinuity is assumed.
// The value should be a bitmask of values from
// ATSParser::DiscontinuityType.
static const char *const kKeyDiscontinuityMask;
// Optionally signalled as part of a discontinuity that includes
// DISCONTINUITY_TIME. It indicates the media time (in us) to be associated
// with the next PTS occuring in the stream. The value is of type int64_t.
static const char *const kKeyMediaTimeUs;
virtual void issueCommand(
Command cmd, bool synchronous, const sp<AMessage> &msg = NULL) = 0;
struct BnStreamSource : public BnInterface<IStreamSource> {
virtual status_t onTransact(
uint32_t code, const Parcel &data, Parcel *reply,
uint32_t flags = 0);
struct BnStreamListener : public BnInterface<IStreamListener> {
virtual status_t onTransact(
uint32_t code, const Parcel &data, Parcel *reply,
uint32_t flags = 0);
} // namespace android