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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
* 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 <media/stagefright/MediaBuffer.h>
#include <media/stagefright/foundation/ABase.h>
#include <media/stagefright/foundation/ABuffer.h>
#include <utils/List.h>
namespace android {
class MetaData;
struct WebmElement : public LightRefBase<WebmElement> {
const uint64_t mId, mSize;
WebmElement(uint64_t id, uint64_t size);
virtual ~WebmElement();
virtual int serializePayloadSize(uint8_t *buf);
virtual void serializePayload(uint8_t *buf)=0;
uint64_t totalSize();
uint64_t serializeInto(uint8_t *buf);
uint8_t *serialize(uint64_t& size);
int write(int fd, uint64_t& size);
static sp<WebmElement> EbmlHeader(
int ver = 1,
int readVer = 1,
int maxIdLen = 4,
int maxSizeLen = 8,
int docVer = 2,
int docReadVer = 2);
static sp<WebmElement> SegmentInfo(uint64_t scale = 1000000, double dur = 0);
static sp<WebmElement> AudioTrackEntry(
const char *codec,
int chans,
double rate,
const sp<ABuffer> &buf,
int bps = 0,
uint64_t uid = 0,
bool lacing = false,
const char *lang = "und");
static sp<WebmElement> VideoTrackEntry(
const char *codec,
uint64_t width,
uint64_t height,
const sp<MetaData> &md,
uint64_t uid = 0,
bool lacing = false,
const char *lang = "und");
static sp<WebmElement> SeekEntry(uint64_t id, uint64_t off);
static sp<WebmElement> CuePointEntry(uint64_t time, int track, uint64_t off);
static sp<WebmElement> SimpleBlock(
int trackNum,
int16_t timecode,
bool key,
const uint8_t *data,
uint64_t dataSize);
struct WebmUnsigned : public WebmElement {
WebmUnsigned(uint64_t id, uint64_t value);
const uint64_t mValue;
void serializePayload(uint8_t *buf);
struct WebmFloat : public WebmElement {
const double mValue;
WebmFloat(uint64_t id, float value);
WebmFloat(uint64_t id, double value);
void serializePayload(uint8_t *buf);
struct WebmBinary : public WebmElement {
const sp<ABuffer> mRef;
WebmBinary(uint64_t id, const sp<ABuffer> &ref);
void serializePayload(uint8_t *buf);
struct WebmString : public WebmElement {
const char *const mStr;
WebmString(uint64_t id, const char *str);
void serializePayload(uint8_t *buf);
struct WebmSimpleBlock : public WebmElement {
const int mTrackNum;
const int16_t mRelTimecode;
const bool mKey;
const sp<ABuffer> mRef;
WebmSimpleBlock(int trackNum, int16_t timecode, bool key, const sp<ABuffer>& orig);
void serializePayload(uint8_t *buf);
struct EbmlVoid : public WebmElement {
const uint64_t mSizeWidth;
explicit EbmlVoid(uint64_t totalSize);
int serializePayloadSize(uint8_t *buf);
void serializePayload(uint8_t *buf);
struct WebmMaster : public WebmElement {
const List<sp<WebmElement> > mChildren;
explicit WebmMaster(uint64_t id);
WebmMaster(uint64_t id, const List<sp<WebmElement> > &children);
int serializePayloadSize(uint8_t *buf);
void serializePayload(uint8_t *buf);
} /* namespace android */
#endif /* WEBMELEMENT_H_ */