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-rw-r--r--media/libstagefright/mp4/FragmentedMP4Parser.cpp1993
1 files changed, 0 insertions, 1993 deletions
diff --git a/media/libstagefright/mp4/FragmentedMP4Parser.cpp b/media/libstagefright/mp4/FragmentedMP4Parser.cpp
deleted file mode 100644
index 0102656..0000000
--- a/media/libstagefright/mp4/FragmentedMP4Parser.cpp
+++ /dev/null
@@ -1,1993 +0,0 @@
-/*
- * Copyright (C) 2012 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 "FragmentedMP4Parser"
-#include <utils/Log.h>
-
-#include "include/avc_utils.h"
-#include "include/ESDS.h"
-#include "include/FragmentedMP4Parser.h"
-#include "TrackFragment.h"
-
-
-#include <media/stagefright/foundation/ABuffer.h>
-#include <media/stagefright/foundation/ADebug.h>
-#include <media/stagefright/foundation/AMessage.h>
-#include <media/stagefright/foundation/hexdump.h>
-#include <media/stagefright/MediaDefs.h>
-#include <media/stagefright/MediaErrors.h>
-#include <media/stagefright/Utils.h>
-
-
-namespace android {
-
-static const char *Fourcc2String(uint32_t fourcc) {
- static char buffer[5];
- buffer[4] = '\0';
- buffer[0] = fourcc >> 24;
- buffer[1] = (fourcc >> 16) & 0xff;
- buffer[2] = (fourcc >> 8) & 0xff;
- buffer[3] = fourcc & 0xff;
-
- return buffer;
-}
-
-static const char *IndentString(size_t n) {
- static const char kSpace[] = " ";
- return kSpace + sizeof(kSpace) - 2 * n - 1;
-}
-
-// static
-const FragmentedMP4Parser::DispatchEntry FragmentedMP4Parser::kDispatchTable[] = {
- { FOURCC('m', 'o', 'o', 'v'), 0, NULL },
- { FOURCC('t', 'r', 'a', 'k'), FOURCC('m', 'o', 'o', 'v'), NULL },
- { FOURCC('u', 'd', 't', 'a'), FOURCC('t', 'r', 'a', 'k'), NULL },
- { FOURCC('u', 'd', 't', 'a'), FOURCC('m', 'o', 'o', 'v'), NULL },
- { FOURCC('m', 'e', 't', 'a'), FOURCC('u', 'd', 't', 'a'), NULL },
- { FOURCC('i', 'l', 's', 't'), FOURCC('m', 'e', 't', 'a'), NULL },
-
- { FOURCC('t', 'k', 'h', 'd'), FOURCC('t', 'r', 'a', 'k'),
- &FragmentedMP4Parser::parseTrackHeader
- },
-
- { FOURCC('m', 'v', 'e', 'x'), FOURCC('m', 'o', 'o', 'v'), NULL },
-
- { FOURCC('t', 'r', 'e', 'x'), FOURCC('m', 'v', 'e', 'x'),
- &FragmentedMP4Parser::parseTrackExtends
- },
-
- { FOURCC('e', 'd', 't', 's'), FOURCC('t', 'r', 'a', 'k'), NULL },
- { FOURCC('m', 'd', 'i', 'a'), FOURCC('t', 'r', 'a', 'k'), NULL },
-
- { FOURCC('m', 'd', 'h', 'd'), FOURCC('m', 'd', 'i', 'a'),
- &FragmentedMP4Parser::parseMediaHeader
- },
-
- { FOURCC('h', 'd', 'l', 'r'), FOURCC('m', 'd', 'i', 'a'),
- &FragmentedMP4Parser::parseMediaHandler
- },
-
- { FOURCC('m', 'i', 'n', 'f'), FOURCC('m', 'd', 'i', 'a'), NULL },
- { FOURCC('d', 'i', 'n', 'f'), FOURCC('m', 'i', 'n', 'f'), NULL },
- { FOURCC('s', 't', 'b', 'l'), FOURCC('m', 'i', 'n', 'f'), NULL },
- { FOURCC('s', 't', 's', 'd'), FOURCC('s', 't', 'b', 'l'), NULL },
-
- { FOURCC('s', 't', 's', 'z'), FOURCC('s', 't', 'b', 'l'),
- &FragmentedMP4Parser::parseSampleSizes },
-
- { FOURCC('s', 't', 'z', '2'), FOURCC('s', 't', 'b', 'l'),
- &FragmentedMP4Parser::parseCompactSampleSizes },
-
- { FOURCC('s', 't', 's', 'c'), FOURCC('s', 't', 'b', 'l'),
- &FragmentedMP4Parser::parseSampleToChunk },
-
- { FOURCC('s', 't', 'c', 'o'), FOURCC('s', 't', 'b', 'l'),
- &FragmentedMP4Parser::parseChunkOffsets },
-
- { FOURCC('c', 'o', '6', '4'), FOURCC('s', 't', 'b', 'l'),
- &FragmentedMP4Parser::parseChunkOffsets64 },
-
- { FOURCC('a', 'v', 'c', 'C'), FOURCC('a', 'v', 'c', '1'),
- &FragmentedMP4Parser::parseAVCCodecSpecificData },
-
- { FOURCC('e', 's', 'd', 's'), FOURCC('m', 'p', '4', 'a'),
- &FragmentedMP4Parser::parseESDSCodecSpecificData },
-
- { FOURCC('e', 's', 'd', 's'), FOURCC('m', 'p', '4', 'v'),
- &FragmentedMP4Parser::parseESDSCodecSpecificData },
-
- { FOURCC('m', 'd', 'a', 't'), 0, &FragmentedMP4Parser::parseMediaData },
-
- { FOURCC('m', 'o', 'o', 'f'), 0, NULL },
- { FOURCC('t', 'r', 'a', 'f'), FOURCC('m', 'o', 'o', 'f'), NULL },
-
- { FOURCC('t', 'f', 'h', 'd'), FOURCC('t', 'r', 'a', 'f'),
- &FragmentedMP4Parser::parseTrackFragmentHeader
- },
- { FOURCC('t', 'r', 'u', 'n'), FOURCC('t', 'r', 'a', 'f'),
- &FragmentedMP4Parser::parseTrackFragmentRun
- },
-
- { FOURCC('m', 'f', 'r', 'a'), 0, NULL },
-
- { FOURCC('s', 'i', 'd', 'x'), 0, &FragmentedMP4Parser::parseSegmentIndex },
-};
-
-struct FileSource : public FragmentedMP4Parser::Source {
- FileSource(const char *filename)
- : mFile(fopen(filename, "rb")) {
- CHECK(mFile != NULL);
- }
-
- virtual ~FileSource() {
- fclose(mFile);
- }
-
- virtual ssize_t readAt(off64_t offset, void *data, size_t size) {
- fseek(mFile, offset, SEEK_SET);
- return fread(data, 1, size, mFile);
- }
-
- virtual bool isSeekable() {
- return true;
- }
-
- private:
- FILE *mFile;
-
- DISALLOW_EVIL_CONSTRUCTORS(FileSource);
-};
-
-struct ReadTracker : public RefBase {
- ReadTracker(off64_t size) {
- allocSize = 1 + size / 8192; // 1 bit per kilobyte
- bitmap = (char*) calloc(1, allocSize);
- }
- virtual ~ReadTracker() {
- dumpToLog();
- free(bitmap);
- }
- void mark(off64_t offset, size_t size) {
- int firstbit = offset / 1024;
- int lastbit = (offset + size - 1) / 1024;
- for (int i = firstbit; i <= lastbit; i++) {
- bitmap[i/8] |= (0x80 >> (i & 7));
- }
- }
-
- private:
- void dumpToLog() {
- // 96 chars per line, each char represents one kilobyte, 1 kb per bit
- int numlines = allocSize / 12;
- char buf[97];
- char *cur = bitmap;
- for (int i = 0; i < numlines; i++ && cur) {
- for (int j = 0; j < 12; j++) {
- for (int k = 0; k < 8; k++) {
- buf[(j * 8) + k] = (*cur & (0x80 >> k)) ? 'X' : '.';
- }
- cur++;
- }
- buf[96] = '\0';
- ALOGI("%5dk: %s", i * 96, buf);
- }
- }
-
- size_t allocSize;
- char *bitmap;
-};
-
-struct DataSourceSource : public FragmentedMP4Parser::Source {
- DataSourceSource(sp<DataSource> &source)
- : mDataSource(source) {
- CHECK(mDataSource != NULL);
-#if 0
- off64_t size;
- if (source->getSize(&size) == OK) {
- mReadTracker = new ReadTracker(size);
- } else {
- ALOGE("couldn't get data source size");
- }
-#endif
- }
-
- virtual ssize_t readAt(off64_t offset, void *data, size_t size) {
- if (mReadTracker != NULL) {
- mReadTracker->mark(offset, size);
- }
- return mDataSource->readAt(offset, data, size);
- }
-
- virtual bool isSeekable() {
- return true;
- }
-
- private:
- sp<DataSource> mDataSource;
- sp<ReadTracker> mReadTracker;
-
- DISALLOW_EVIL_CONSTRUCTORS(DataSourceSource);
-};
-
-FragmentedMP4Parser::FragmentedMP4Parser()
- : mBufferPos(0),
- mSuspended(false),
- mDoneWithMoov(false),
- mFirstMoofOffset(0),
- mFinalResult(OK) {
-}
-
-FragmentedMP4Parser::~FragmentedMP4Parser() {
-}
-
-void FragmentedMP4Parser::start(const char *filename) {
- sp<AMessage> msg = new AMessage(kWhatStart, id());
- msg->setObject("source", new FileSource(filename));
- msg->post();
- ALOGV("Parser::start(%s)", filename);
-}
-
-void FragmentedMP4Parser::start(const sp<Source> &source) {
- sp<AMessage> msg = new AMessage(kWhatStart, id());
- msg->setObject("source", source);
- msg->post();
- ALOGV("Parser::start(Source)");
-}
-
-void FragmentedMP4Parser::start(sp<DataSource> &source) {
- sp<AMessage> msg = new AMessage(kWhatStart, id());
- msg->setObject("source", new DataSourceSource(source));
- msg->post();
- ALOGV("Parser::start(DataSource)");
-}
-
-sp<AMessage> FragmentedMP4Parser::getFormat(bool audio, bool synchronous) {
-
- while (true) {
- bool moovDone = mDoneWithMoov;
- sp<AMessage> msg = new AMessage(kWhatGetFormat, id());
- msg->setInt32("audio", audio);
-
- sp<AMessage> response;
- status_t err = msg->postAndAwaitResponse(&response);
-
- if (err != OK) {
- ALOGV("getFormat post failed: %d", err);
- return NULL;
- }
-
- if (response->findInt32("err", &err) && err != OK) {
- if (synchronous && err == -EWOULDBLOCK && !moovDone) {
- resumeIfNecessary();
- ALOGV("@getFormat parser not ready yet, retrying");
- usleep(10000);
- continue;
- }
- ALOGV("getFormat failed: %d", err);
- return NULL;
- }
-
- sp<AMessage> format;
- CHECK(response->findMessage("format", &format));
-
- ALOGV("returning format %s", format->debugString().c_str());
- return format;
- }
-}
-
-status_t FragmentedMP4Parser::seekTo(bool wantAudio, int64_t timeUs) {
- sp<AMessage> msg = new AMessage(kWhatSeekTo, id());
- msg->setInt32("audio", wantAudio);
- msg->setInt64("position", timeUs);
-
- sp<AMessage> response;
- status_t err = msg->postAndAwaitResponse(&response);
- return err;
-}
-
-bool FragmentedMP4Parser::isSeekable() const {
- while (mFirstMoofOffset == 0 && mFinalResult == OK) {
- usleep(10000);
- }
- bool seekable = mSource->isSeekable();
- for (size_t i = 0; seekable && i < mTracks.size(); i++) {
- const TrackInfo *info = &mTracks.valueAt(i);
- seekable &= !info->mSidx.empty();
- }
- return seekable;
-}
-
-status_t FragmentedMP4Parser::onSeekTo(bool wantAudio, int64_t position) {
- status_t err = -EINVAL;
- ssize_t trackIndex = findTrack(wantAudio);
- if (trackIndex < 0) {
- err = trackIndex;
- } else {
- TrackInfo *info = &mTracks.editValueAt(trackIndex);
-
- int numSidxEntries = info->mSidx.size();
- int64_t totalTime = 0;
- off_t totalOffset = mFirstMoofOffset;
- for (int i = 0; i < numSidxEntries; i++) {
- const SidxEntry *se = &info->mSidx[i];
- if (totalTime + se->mDurationUs > position) {
- mBuffer->setRange(0,0);
- mBufferPos = totalOffset;
- if (mFinalResult == ERROR_END_OF_STREAM) {
- mFinalResult = OK;
- mSuspended = true; // force resume
- resumeIfNecessary();
- }
- info->mFragments.clear();
- info->mDecodingTime = totalTime * info->mMediaTimeScale / 1000000ll;
- return OK;
- }
- totalTime += se->mDurationUs;
- totalOffset += se->mSize;
- }
- }
- ALOGV("seekTo out of range");
- return err;
-}
-
-status_t FragmentedMP4Parser::dequeueAccessUnit(bool audio, sp<ABuffer> *accessUnit,
- bool synchronous) {
-
- while (true) {
- sp<AMessage> msg = new AMessage(kWhatDequeueAccessUnit, id());
- msg->setInt32("audio", audio);
-
- sp<AMessage> response;
- status_t err = msg->postAndAwaitResponse(&response);
-
- if (err != OK) {
- ALOGV("dequeue fail 1: %d", err);
- return err;
- }
-
- if (response->findInt32("err", &err) && err != OK) {
- if (synchronous && err == -EWOULDBLOCK) {
- resumeIfNecessary();
- ALOGV("Parser not ready yet, retrying");
- usleep(10000);
- continue;
- }
- ALOGV("dequeue fail 2: %d, %d", err, synchronous);
- return err;
- }
-
- CHECK(response->findBuffer("accessUnit", accessUnit));
-
- return OK;
- }
-}
-
-ssize_t FragmentedMP4Parser::findTrack(bool wantAudio) const {
- for (size_t i = 0; i < mTracks.size(); ++i) {
- const TrackInfo *info = &mTracks.valueAt(i);
-
- bool isAudio =
- info->mMediaHandlerType == FOURCC('s', 'o', 'u', 'n');
-
- bool isVideo =
- info->mMediaHandlerType == FOURCC('v', 'i', 'd', 'e');
-
- if ((wantAudio && isAudio) || (!wantAudio && !isAudio)) {
- if (info->mSampleDescs.empty()) {
- break;
- }
-
- return i;
- }
- }
-
- return -EWOULDBLOCK;
-}
-
-void FragmentedMP4Parser::onMessageReceived(const sp<AMessage> &msg) {
- switch (msg->what()) {
- case kWhatStart:
- {
- sp<RefBase> obj;
- CHECK(msg->findObject("source", &obj));
-
- mSource = static_cast<Source *>(obj.get());
-
- mBuffer = new ABuffer(512 * 1024);
- mBuffer->setRange(0, 0);
-
- enter(0ll, 0, 0);
-
- (new AMessage(kWhatProceed, id()))->post();
- break;
- }
-
- case kWhatProceed:
- {
- CHECK(!mSuspended);
-
- status_t err = onProceed();
-
- if (err == OK) {
- if (!mSuspended) {
- msg->post();
- }
- } else if (err != -EAGAIN) {
- ALOGE("onProceed returned error %d", err);
- }
-
- break;
- }
-
- case kWhatReadMore:
- {
- size_t needed;
- CHECK(msg->findSize("needed", &needed));
-
- memmove(mBuffer->base(), mBuffer->data(), mBuffer->size());
- mBufferPos += mBuffer->offset();
- mBuffer->setRange(0, mBuffer->size());
-
- size_t maxBytesToRead = mBuffer->capacity() - mBuffer->size();
-
- if (maxBytesToRead < needed) {
- ALOGV("resizing buffer.");
-
- sp<ABuffer> newBuffer =
- new ABuffer((mBuffer->size() + needed + 1023) & ~1023);
- memcpy(newBuffer->data(), mBuffer->data(), mBuffer->size());
- newBuffer->setRange(0, mBuffer->size());
-
- mBuffer = newBuffer;
- maxBytesToRead = mBuffer->capacity() - mBuffer->size();
- }
-
- CHECK_GE(maxBytesToRead, needed);
-
- ssize_t n = mSource->readAt(
- mBufferPos + mBuffer->size(),
- mBuffer->data() + mBuffer->size(), needed);
-
- if (n < (ssize_t)needed) {
- ALOGV("Reached EOF when reading %d @ %d + %d", needed, mBufferPos, mBuffer->size());
- if (n < 0) {
- mFinalResult = n;
- } else if (n == 0) {
- mFinalResult = ERROR_END_OF_STREAM;
- } else {
- mFinalResult = ERROR_IO;
- }
- } else {
- mBuffer->setRange(0, mBuffer->size() + n);
- (new AMessage(kWhatProceed, id()))->post();
- }
-
- break;
- }
-
- case kWhatGetFormat:
- {
- int32_t wantAudio;
- CHECK(msg->findInt32("audio", &wantAudio));
-
- status_t err = -EWOULDBLOCK;
- sp<AMessage> response = new AMessage;
-
- ssize_t trackIndex = findTrack(wantAudio);
-
- if (trackIndex < 0) {
- err = trackIndex;
- } else {
- TrackInfo *info = &mTracks.editValueAt(trackIndex);
-
- sp<AMessage> format = info->mSampleDescs.itemAt(0).mFormat;
- if (info->mSidxDuration) {
- format->setInt64("durationUs", info->mSidxDuration);
- } else {
- // this is probably going to be zero. Oh well...
- format->setInt64("durationUs",
- 1000000ll * info->mDuration / info->mMediaTimeScale);
- }
- response->setMessage(
- "format", format);
-
- err = OK;
- }
-
- response->setInt32("err", err);
-
- uint32_t replyID;
- CHECK(msg->senderAwaitsResponse(&replyID));
-
- response->postReply(replyID);
- break;
- }
-
- case kWhatDequeueAccessUnit:
- {
- int32_t wantAudio;
- CHECK(msg->findInt32("audio", &wantAudio));
-
- status_t err = -EWOULDBLOCK;
- sp<AMessage> response = new AMessage;
-
- ssize_t trackIndex = findTrack(wantAudio);
-
- if (trackIndex < 0) {
- err = trackIndex;
- } else {
- sp<ABuffer> accessUnit;
- err = onDequeueAccessUnit(trackIndex, &accessUnit);
-
- if (err == OK) {
- response->setBuffer("accessUnit", accessUnit);
- }
- }
-
- response->setInt32("err", err);
-
- uint32_t replyID;
- CHECK(msg->senderAwaitsResponse(&replyID));
-
- response->postReply(replyID);
- break;
- }
-
- case kWhatSeekTo:
- {
- ALOGV("kWhatSeekTo");
- int32_t wantAudio;
- CHECK(msg->findInt32("audio", &wantAudio));
- int64_t position;
- CHECK(msg->findInt64("position", &position));
-
- status_t err = -EWOULDBLOCK;
- sp<AMessage> response = new AMessage;
-
- ssize_t trackIndex = findTrack(wantAudio);
-
- if (trackIndex < 0) {
- err = trackIndex;
- } else {
- err = onSeekTo(wantAudio, position);
- }
- response->setInt32("err", err);
- uint32_t replyID;
- CHECK(msg->senderAwaitsResponse(&replyID));
- response->postReply(replyID);
- break;
- }
- default:
- TRESPASS();
- }
-}
-
-status_t FragmentedMP4Parser::onProceed() {
- status_t err;
-
- if ((err = need(8)) != OK) {
- return err;
- }
-
- uint64_t size = readU32(0);
- uint32_t type = readU32(4);
-
- size_t offset = 8;
-
- if (size == 1) {
- if ((err = need(16)) != OK) {
- return err;
- }
-
- size = readU64(offset);
- offset += 8;
- }
-
- uint8_t userType[16];
-
- if (type == FOURCC('u', 'u', 'i', 'd')) {
- if ((err = need(offset + 16)) != OK) {
- return err;
- }
-
- memcpy(userType, mBuffer->data() + offset, 16);
- offset += 16;
- }
-
- CHECK(!mStack.isEmpty());
- uint32_t ptype = mStack.itemAt(mStack.size() - 1).mType;
-
- static const size_t kNumDispatchers =
- sizeof(kDispatchTable) / sizeof(kDispatchTable[0]);
-
- size_t i;
- for (i = 0; i < kNumDispatchers; ++i) {
- if (kDispatchTable[i].mType == type
- && kDispatchTable[i].mParentType == ptype) {
- break;
- }
- }
-
- // SampleEntry boxes are container boxes that start with a variable
- // amount of data depending on the media handler type.
- // We don't look inside 'hint' type SampleEntry boxes.
-
- bool isSampleEntryBox =
- (ptype == FOURCC('s', 't', 's', 'd'))
- && editTrack(mCurrentTrackID)->mMediaHandlerType
- != FOURCC('h', 'i', 'n', 't');
-
- if ((i < kNumDispatchers && kDispatchTable[i].mHandler == 0)
- || isSampleEntryBox || ptype == FOURCC('i', 'l', 's', 't')) {
- // This is a container box.
- if (type == FOURCC('m', 'o', 'o', 'f')) {
- if (mFirstMoofOffset == 0) {
- ALOGV("first moof @ %08x", mBufferPos + offset);
- mFirstMoofOffset = mBufferPos + offset - 8; // point at the size
- }
- }
- if (type == FOURCC('m', 'e', 't', 'a')) {
- if ((err = need(offset + 4)) < OK) {
- return err;
- }
-
- if (readU32(offset) != 0) {
- return -EINVAL;
- }
-
- offset += 4;
- } else if (type == FOURCC('s', 't', 's', 'd')) {
- if ((err = need(offset + 8)) < OK) {
- return err;
- }
-
- if (readU32(offset) != 0) {
- return -EINVAL;
- }
-
- if (readU32(offset + 4) == 0) {
- // We need at least some entries.
- return -EINVAL;
- }
-
- offset += 8;
- } else if (isSampleEntryBox) {
- size_t headerSize;
-
- switch (editTrack(mCurrentTrackID)->mMediaHandlerType) {
- case FOURCC('v', 'i', 'd', 'e'):
- {
- // 8 bytes SampleEntry + 70 bytes VisualSampleEntry
- headerSize = 78;
- break;
- }
-
- case FOURCC('s', 'o', 'u', 'n'):
- {
- // 8 bytes SampleEntry + 20 bytes AudioSampleEntry
- headerSize = 28;
- break;
- }
-
- case FOURCC('m', 'e', 't', 'a'):
- {
- headerSize = 8; // 8 bytes SampleEntry
- break;
- }
-
- default:
- TRESPASS();
- }
-
- if (offset + headerSize > size) {
- return -EINVAL;
- }
-
- if ((err = need(offset + headerSize)) != OK) {
- return err;
- }
-
- switch (editTrack(mCurrentTrackID)->mMediaHandlerType) {
- case FOURCC('v', 'i', 'd', 'e'):
- {
- err = parseVisualSampleEntry(
- type, offset, offset + headerSize);
- break;
- }
-
- case FOURCC('s', 'o', 'u', 'n'):
- {
- err = parseAudioSampleEntry(
- type, offset, offset + headerSize);
- break;
- }
-
- case FOURCC('m', 'e', 't', 'a'):
- {
- err = OK;
- break;
- }
-
- default:
- TRESPASS();
- }
-
- if (err != OK) {
- return err;
- }
-
- offset += headerSize;
- }
-
- skip(offset);
-
- ALOGV("%sentering box of type '%s'",
- IndentString(mStack.size()), Fourcc2String(type));
-
- enter(mBufferPos - offset, type, size - offset);
- } else {
- if (!fitsContainer(size)) {
- return -EINVAL;
- }
-
- if (i < kNumDispatchers && kDispatchTable[i].mHandler != 0) {
- // We have a handler for this box type.
-
- if ((err = need(size)) != OK) {
- return err;
- }
-
- ALOGV("%sparsing box of type '%s'",
- IndentString(mStack.size()), Fourcc2String(type));
-
- if ((err = (this->*kDispatchTable[i].mHandler)(
- type, offset, size)) != OK) {
- return err;
- }
- } else {
- // Unknown box type
-
- ALOGV("%sskipping box of type '%s', size %llu",
- IndentString(mStack.size()),
- Fourcc2String(type), size);
-
- }
-
- skip(size);
- }
-
- return OK;
-}
-
-// static
-int FragmentedMP4Parser::CompareSampleLocation(
- const SampleInfo &sample, const MediaDataInfo &mdatInfo) {
- if (sample.mOffset + sample.mSize < mdatInfo.mOffset) {
- return -1;
- }
-
- if (sample.mOffset >= mdatInfo.mOffset + mdatInfo.mBuffer->size()) {
- return 1;
- }
-
- // Otherwise make sure the sample is completely contained within this
- // media data block.
-
- CHECK_GE(sample.mOffset, mdatInfo.mOffset);
-
- CHECK_LE(sample.mOffset + sample.mSize,
- mdatInfo.mOffset + mdatInfo.mBuffer->size());
-
- return 0;
-}
-
-void FragmentedMP4Parser::resumeIfNecessary() {
- if (!mSuspended) {
- return;
- }
-
- ALOGV("resuming.");
-
- mSuspended = false;
- (new AMessage(kWhatProceed, id()))->post();
-}
-
-status_t FragmentedMP4Parser::getSample(
- TrackInfo *info, sp<TrackFragment> *fragment, SampleInfo *sampleInfo) {
- for (;;) {
- if (info->mFragments.empty()) {
- if (mFinalResult != OK) {
- return mFinalResult;
- }
-
- resumeIfNecessary();
- return -EWOULDBLOCK;
- }
-
- *fragment = *info->mFragments.begin();
-
- status_t err = (*fragment)->getSample(sampleInfo);
-
- if (err == OK) {
- return OK;
- } else if (err != ERROR_END_OF_STREAM) {
- return err;
- }
-
- // Really, end of this fragment...
-
- info->mFragments.erase(info->mFragments.begin());
- }
-}
-
-status_t FragmentedMP4Parser::onDequeueAccessUnit(
- size_t trackIndex, sp<ABuffer> *accessUnit) {
- TrackInfo *info = &mTracks.editValueAt(trackIndex);
-
- sp<TrackFragment> fragment;
- SampleInfo sampleInfo;
- status_t err = getSample(info, &fragment, &sampleInfo);
-
- if (err == -EWOULDBLOCK) {
- resumeIfNecessary();
- return err;
- } else if (err != OK) {
- return err;
- }
-
- err = -EWOULDBLOCK;
-
- bool checkDroppable = false;
-
- for (size_t i = 0; i < mMediaData.size(); ++i) {
- const MediaDataInfo &mdatInfo = mMediaData.itemAt(i);
-
- int cmp = CompareSampleLocation(sampleInfo, mdatInfo);
-
- if (cmp < 0 && !mSource->isSeekable()) {
- return -EPIPE;
- } else if (cmp == 0) {
- if (i > 0) {
- checkDroppable = true;
- }
-
- err = makeAccessUnit(info, sampleInfo, mdatInfo, accessUnit);
- break;
- }
- }
-
- if (err != OK) {
- return err;
- }
-
- fragment->advance();
-
- if (!mMediaData.empty() && checkDroppable) {
- size_t numDroppable = 0;
- bool done = false;
-
- // XXX FIXME: if one of the tracks is not advanced (e.g. if you play an audio+video
- // file with sf2), then mMediaData will not be pruned and keeps growing
- for (size_t i = 0; !done && i < mMediaData.size(); ++i) {
- const MediaDataInfo &mdatInfo = mMediaData.itemAt(i);
-
- for (size_t j = 0; j < mTracks.size(); ++j) {
- TrackInfo *info = &mTracks.editValueAt(j);
-
- sp<TrackFragment> fragment;
- SampleInfo sampleInfo;
- err = getSample(info, &fragment, &sampleInfo);
-
- if (err != OK) {
- done = true;
- break;
- }
-
- int cmp = CompareSampleLocation(sampleInfo, mdatInfo);
-
- if (cmp <= 0) {
- done = true;
- break;
- }
- }
-
- if (!done) {
- ++numDroppable;
- }
- }
-
- if (numDroppable > 0) {
- mMediaData.removeItemsAt(0, numDroppable);
-
- if (mMediaData.size() < 5) {
- resumeIfNecessary();
- }
- }
- }
-
- return err;
-}
-
-static size_t parseNALSize(size_t nalLengthSize, const uint8_t *data) {
- switch (nalLengthSize) {
- case 1:
- return *data;
- case 2:
- return U16_AT(data);
- case 3:
- return ((size_t)data[0] << 16) | U16_AT(&data[1]);
- case 4:
- return U32_AT(data);
- }
-
- // This cannot happen, mNALLengthSize springs to life by adding 1 to
- // a 2-bit integer.
- TRESPASS();
-
- return 0;
-}
-
-status_t FragmentedMP4Parser::makeAccessUnit(
- TrackInfo *info,
- const SampleInfo &sample,
- const MediaDataInfo &mdatInfo,
- sp<ABuffer> *accessUnit) {
- if (sample.mSampleDescIndex < 1
- || sample.mSampleDescIndex > info->mSampleDescs.size()) {
- return ERROR_MALFORMED;
- }
-
- int64_t presentationTimeUs =
- 1000000ll * sample.mPresentationTime / info->mMediaTimeScale;
-
- const SampleDescription &sampleDesc =
- info->mSampleDescs.itemAt(sample.mSampleDescIndex - 1);
-
- size_t nalLengthSize;
- if (!sampleDesc.mFormat->findSize("nal-length-size", &nalLengthSize)) {
- *accessUnit = new ABuffer(sample.mSize);
-
- memcpy((*accessUnit)->data(),
- mdatInfo.mBuffer->data() + (sample.mOffset - mdatInfo.mOffset),
- sample.mSize);
-
- (*accessUnit)->meta()->setInt64("timeUs", presentationTimeUs);
- if (IsIDR(*accessUnit)) {
- (*accessUnit)->meta()->setInt32("is-sync-frame", 1);
- }
-
- return OK;
- }
-
- const uint8_t *srcPtr =
- mdatInfo.mBuffer->data() + (sample.mOffset - mdatInfo.mOffset);
-
- for (int i = 0; i < 2 ; ++i) {
- size_t srcOffset = 0;
- size_t dstOffset = 0;
-
- while (srcOffset < sample.mSize) {
- if (srcOffset + nalLengthSize > sample.mSize) {
- return ERROR_MALFORMED;
- }
-
- size_t nalSize = parseNALSize(nalLengthSize, &srcPtr[srcOffset]);
- srcOffset += nalLengthSize;
-
- if (srcOffset + nalSize > sample.mSize) {
- return ERROR_MALFORMED;
- }
-
- if (i == 1) {
- memcpy((*accessUnit)->data() + dstOffset,
- "\x00\x00\x00\x01",
- 4);
-
- memcpy((*accessUnit)->data() + dstOffset + 4,
- srcPtr + srcOffset,
- nalSize);
- }
-
- srcOffset += nalSize;
- dstOffset += nalSize + 4;
- }
-
- if (i == 0) {
- (*accessUnit) = new ABuffer(dstOffset);
- (*accessUnit)->meta()->setInt64(
- "timeUs", presentationTimeUs);
- }
- }
- if (IsIDR(*accessUnit)) {
- (*accessUnit)->meta()->setInt32("is-sync-frame", 1);
- }
-
- return OK;
-}
-
-status_t FragmentedMP4Parser::need(size_t size) {
- if (!fitsContainer(size)) {
- return -EINVAL;
- }
-
- if (size <= mBuffer->size()) {
- return OK;
- }
-
- sp<AMessage> msg = new AMessage(kWhatReadMore, id());
- msg->setSize("needed", size - mBuffer->size());
- msg->post();
-
- // ALOGV("need(%d) returning -EAGAIN, only have %d", size, mBuffer->size());
-
- return -EAGAIN;
-}
-
-void FragmentedMP4Parser::enter(off64_t offset, uint32_t type, uint64_t size) {
- Container container;
- container.mOffset = offset;
- container.mType = type;
- container.mExtendsToEOF = (size == 0);
- container.mBytesRemaining = size;
-
- mStack.push(container);
-}
-
-bool FragmentedMP4Parser::fitsContainer(uint64_t size) const {
- CHECK(!mStack.isEmpty());
- const Container &container = mStack.itemAt(mStack.size() - 1);
-
- return container.mExtendsToEOF || size <= container.mBytesRemaining;
-}
-
-uint16_t FragmentedMP4Parser::readU16(size_t offset) {
- CHECK_LE(offset + 2, mBuffer->size());
-
- const uint8_t *ptr = mBuffer->data() + offset;
- return (ptr[0] << 8) | ptr[1];
-}
-
-uint32_t FragmentedMP4Parser::readU32(size_t offset) {
- CHECK_LE(offset + 4, mBuffer->size());
-
- const uint8_t *ptr = mBuffer->data() + offset;
- return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | ptr[3];
-}
-
-uint64_t FragmentedMP4Parser::readU64(size_t offset) {
- return (((uint64_t)readU32(offset)) << 32) | readU32(offset + 4);
-}
-
-void FragmentedMP4Parser::skip(off_t distance) {
- CHECK(!mStack.isEmpty());
- for (size_t i = mStack.size(); i-- > 0;) {
- Container *container = &mStack.editItemAt(i);
- if (!container->mExtendsToEOF) {
- CHECK_LE(distance, (off_t)container->mBytesRemaining);
-
- container->mBytesRemaining -= distance;
-
- if (container->mBytesRemaining == 0) {
- ALOGV("%sleaving box of type '%s'",
- IndentString(mStack.size() - 1),
- Fourcc2String(container->mType));
-
-#if 0
- if (container->mType == FOURCC('s', 't', 's', 'd')) {
- TrackInfo *trackInfo = editTrack(mCurrentTrackID);
- for (size_t i = 0;
- i < trackInfo->mSampleDescs.size(); ++i) {
- ALOGI("format #%d: %s",
- i,
- trackInfo->mSampleDescs.itemAt(i)
- .mFormat->debugString().c_str());
- }
- }
-#endif
-
- if (container->mType == FOURCC('s', 't', 'b', 'l')) {
- TrackInfo *trackInfo = editTrack(mCurrentTrackID);
-
- trackInfo->mStaticFragment->signalCompletion();
-
- CHECK(trackInfo->mFragments.empty());
- trackInfo->mFragments.push_back(trackInfo->mStaticFragment);
- trackInfo->mStaticFragment.clear();
- } else if (container->mType == FOURCC('t', 'r', 'a', 'f')) {
- TrackInfo *trackInfo =
- editTrack(mTrackFragmentHeaderInfo.mTrackID);
-
- const sp<TrackFragment> &fragment =
- *--trackInfo->mFragments.end();
-
- static_cast<DynamicTrackFragment *>(
- fragment.get())->signalCompletion();
- } else if (container->mType == FOURCC('m', 'o', 'o', 'v')) {
- mDoneWithMoov = true;
- }
-
- container = NULL;
- mStack.removeItemsAt(i);
- }
- }
- }
-
- if (distance < (off_t)mBuffer->size()) {
- mBuffer->setRange(mBuffer->offset() + distance, mBuffer->size() - distance);
- mBufferPos += distance;
- return;
- }
-
- mBuffer->setRange(0, 0);
- mBufferPos += distance;
-}
-
-status_t FragmentedMP4Parser::parseTrackHeader(
- uint32_t type, size_t offset, uint64_t size) {
- if (offset + 4 > size) {
- return -EINVAL;
- }
-
- uint32_t flags = readU32(offset);
-
- uint32_t version = flags >> 24;
- flags &= 0xffffff;
-
- uint32_t trackID;
- uint64_t duration;
-
- if (version == 1) {
- if (offset + 36 > size) {
- return -EINVAL;
- }
-
- trackID = readU32(offset + 20);
- duration = readU64(offset + 28);
-
- offset += 36;
- } else if (version == 0) {
- if (offset + 24 > size) {
- return -EINVAL;
- }
-
- trackID = readU32(offset + 12);
- duration = readU32(offset + 20);
-
- offset += 24;
- } else {
- return -EINVAL;
- }
-
- TrackInfo *info = editTrack(trackID, true /* createIfNecessary */);
- info->mFlags = flags;
- info->mDuration = duration;
- if (info->mDuration == 0xffffffff) {
- // ffmpeg sets this to -1, which is incorrect.
- info->mDuration = 0;
- }
-
- info->mStaticFragment = new StaticTrackFragment;
-
- mCurrentTrackID = trackID;
-
- return OK;
-}
-
-status_t FragmentedMP4Parser::parseMediaHeader(
- uint32_t type, size_t offset, uint64_t size) {
- if (offset + 4 > size) {
- return -EINVAL;
- }
-
- uint32_t versionAndFlags = readU32(offset);
-
- if (versionAndFlags & 0xffffff) {
- return ERROR_MALFORMED;
- }
-
- uint32_t version = versionAndFlags >> 24;
-
- TrackInfo *info = editTrack(mCurrentTrackID);
-
- if (version == 1) {
- if (offset + 4 + 32 > size) {
- return -EINVAL;
- }
- info->mMediaTimeScale = U32_AT(mBuffer->data() + offset + 20);
- } else if (version == 0) {
- if (offset + 4 + 20 > size) {
- return -EINVAL;
- }
- info->mMediaTimeScale = U32_AT(mBuffer->data() + offset + 12);
- } else {
- return ERROR_MALFORMED;
- }
-
- return OK;
-}
-
-status_t FragmentedMP4Parser::parseMediaHandler(
- uint32_t type, size_t offset, uint64_t size) {
- if (offset + 12 > size) {
- return -EINVAL;
- }
-
- if (readU32(offset) != 0) {
- return -EINVAL;
- }
-
- uint32_t handlerType = readU32(offset + 8);
-
- switch (handlerType) {
- case FOURCC('v', 'i', 'd', 'e'):
- case FOURCC('s', 'o', 'u', 'n'):
- case FOURCC('h', 'i', 'n', 't'):
- case FOURCC('m', 'e', 't', 'a'):
- break;
-
- default:
- return -EINVAL;
- }
-
- editTrack(mCurrentTrackID)->mMediaHandlerType = handlerType;
-
- return OK;
-}
-
-status_t FragmentedMP4Parser::parseVisualSampleEntry(
- uint32_t type, size_t offset, uint64_t size) {
- if (offset + 78 > size) {
- return -EINVAL;
- }
-
- TrackInfo *trackInfo = editTrack(mCurrentTrackID);
-
- trackInfo->mSampleDescs.push();
- SampleDescription *sampleDesc =
- &trackInfo->mSampleDescs.editItemAt(
- trackInfo->mSampleDescs.size() - 1);
-
- sampleDesc->mType = type;
- sampleDesc->mDataRefIndex = readU16(offset + 6);
-
- sp<AMessage> format = new AMessage;
-
- switch (type) {
- case FOURCC('a', 'v', 'c', '1'):
- format->setString("mime", MEDIA_MIMETYPE_VIDEO_AVC);
- break;
- case FOURCC('m', 'p', '4', 'v'):
- format->setString("mime", MEDIA_MIMETYPE_VIDEO_MPEG4);
- break;
- case FOURCC('s', '2', '6', '3'):
- case FOURCC('h', '2', '6', '3'):
- case FOURCC('H', '2', '6', '3'):
- format->setString("mime", MEDIA_MIMETYPE_VIDEO_H263);
- break;
- default:
- format->setString("mime", "application/octet-stream");
- break;
- }
-
- format->setInt32("width", readU16(offset + 8 + 16));
- format->setInt32("height", readU16(offset + 8 + 18));
-
- sampleDesc->mFormat = format;
-
- return OK;
-}
-
-status_t FragmentedMP4Parser::parseAudioSampleEntry(
- uint32_t type, size_t offset, uint64_t size) {
- if (offset + 28 > size) {
- return -EINVAL;
- }
-
- TrackInfo *trackInfo = editTrack(mCurrentTrackID);
-
- trackInfo->mSampleDescs.push();
- SampleDescription *sampleDesc =
- &trackInfo->mSampleDescs.editItemAt(
- trackInfo->mSampleDescs.size() - 1);
-
- sampleDesc->mType = type;
- sampleDesc->mDataRefIndex = readU16(offset + 6);
-
- sp<AMessage> format = new AMessage;
-
- format->setInt32("channel-count", readU16(offset + 8 + 8));
- format->setInt32("sample-size", readU16(offset + 8 + 10));
- format->setInt32("sample-rate", readU32(offset + 8 + 16) / 65536.0f);
-
- switch (type) {
- case FOURCC('m', 'p', '4', 'a'):
- format->setString("mime", MEDIA_MIMETYPE_AUDIO_AAC);
- break;
-
- case FOURCC('s', 'a', 'm', 'r'):
- format->setString("mime", MEDIA_MIMETYPE_AUDIO_AMR_NB);
- format->setInt32("channel-count", 1);
- format->setInt32("sample-rate", 8000);
- break;
-
- case FOURCC('s', 'a', 'w', 'b'):
- format->setString("mime", MEDIA_MIMETYPE_AUDIO_AMR_WB);
- format->setInt32("channel-count", 1);
- format->setInt32("sample-rate", 16000);
- break;
- default:
- format->setString("mime", "application/octet-stream");
- break;
- }
-
- sampleDesc->mFormat = format;
-
- return OK;
-}
-
-static void addCodecSpecificData(
- const sp<AMessage> &format, int32_t index,
- const void *data, size_t size,
- bool insertStartCode = false) {
- sp<ABuffer> csd = new ABuffer(insertStartCode ? size + 4 : size);
-
- memcpy(csd->data() + (insertStartCode ? 4 : 0), data, size);
-
- if (insertStartCode) {
- memcpy(csd->data(), "\x00\x00\x00\x01", 4);
- }
-
- csd->meta()->setInt32("csd", true);
- csd->meta()->setInt64("timeUs", 0ll);
-
- format->setBuffer(StringPrintf("csd-%d", index).c_str(), csd);
-}
-
-status_t FragmentedMP4Parser::parseSampleSizes(
- uint32_t type, size_t offset, uint64_t size) {
- return editTrack(mCurrentTrackID)->mStaticFragment->parseSampleSizes(
- this, type, offset, size);
-}
-
-status_t FragmentedMP4Parser::parseCompactSampleSizes(
- uint32_t type, size_t offset, uint64_t size) {
- return editTrack(mCurrentTrackID)->mStaticFragment->parseCompactSampleSizes(
- this, type, offset, size);
-}
-
-status_t FragmentedMP4Parser::parseSampleToChunk(
- uint32_t type, size_t offset, uint64_t size) {
- return editTrack(mCurrentTrackID)->mStaticFragment->parseSampleToChunk(
- this, type, offset, size);
-}
-
-status_t FragmentedMP4Parser::parseChunkOffsets(
- uint32_t type, size_t offset, uint64_t size) {
- return editTrack(mCurrentTrackID)->mStaticFragment->parseChunkOffsets(
- this, type, offset, size);
-}
-
-status_t FragmentedMP4Parser::parseChunkOffsets64(
- uint32_t type, size_t offset, uint64_t size) {
- return editTrack(mCurrentTrackID)->mStaticFragment->parseChunkOffsets64(
- this, type, offset, size);
-}
-
-status_t FragmentedMP4Parser::parseAVCCodecSpecificData(
- uint32_t type, size_t offset, uint64_t size) {
- TrackInfo *trackInfo = editTrack(mCurrentTrackID);
-
- SampleDescription *sampleDesc =
- &trackInfo->mSampleDescs.editItemAt(
- trackInfo->mSampleDescs.size() - 1);
-
- if (sampleDesc->mType != FOURCC('a', 'v', 'c', '1')) {
- return -EINVAL;
- }
-
- const uint8_t *ptr = mBuffer->data() + offset;
-
- size -= offset;
- offset = 0;
-
- if (size < 7 || ptr[0] != 0x01) {
- return ERROR_MALFORMED;
- }
-
- sampleDesc->mFormat->setSize("nal-length-size", 1 + (ptr[4] & 3));
-
- size_t numSPS = ptr[5] & 31;
-
- ptr += 6;
- size -= 6;
-
- for (size_t i = 0; i < numSPS; ++i) {
- if (size < 2) {
- return ERROR_MALFORMED;
- }
-
- size_t length = U16_AT(ptr);
-
- ptr += 2;
- size -= 2;
-
- if (size < length) {
- return ERROR_MALFORMED;
- }
-
- addCodecSpecificData(
- sampleDesc->mFormat, i, ptr, length,
- true /* insertStartCode */);
-
- ptr += length;
- size -= length;
- }
-
- if (size < 1) {
- return ERROR_MALFORMED;
- }
-
- size_t numPPS = *ptr;
- ++ptr;
- --size;
-
- for (size_t i = 0; i < numPPS; ++i) {
- if (size < 2) {
- return ERROR_MALFORMED;
- }
-
- size_t length = U16_AT(ptr);
-
- ptr += 2;
- size -= 2;
-
- if (size < length) {
- return ERROR_MALFORMED;
- }
-
- addCodecSpecificData(
- sampleDesc->mFormat, numSPS + i, ptr, length,
- true /* insertStartCode */);
-
- ptr += length;
- size -= length;
- }
-
- return OK;
-}
-
-status_t FragmentedMP4Parser::parseESDSCodecSpecificData(
- uint32_t type, size_t offset, uint64_t size) {
- TrackInfo *trackInfo = editTrack(mCurrentTrackID);
-
- SampleDescription *sampleDesc =
- &trackInfo->mSampleDescs.editItemAt(
- trackInfo->mSampleDescs.size() - 1);
-
- if (sampleDesc->mType != FOURCC('m', 'p', '4', 'a')
- && sampleDesc->mType != FOURCC('m', 'p', '4', 'v')) {
- return -EINVAL;
- }
-
- const uint8_t *ptr = mBuffer->data() + offset;
-
- size -= offset;
- offset = 0;
-
- if (size < 4) {
- return -EINVAL;
- }
-
- if (U32_AT(ptr) != 0) {
- return -EINVAL;
- }
-
- ptr += 4;
- size -=4;
-
- ESDS esds(ptr, size);
-
- uint8_t objectTypeIndication;
- if (esds.getObjectTypeIndication(&objectTypeIndication) != OK) {
- return ERROR_MALFORMED;
- }
-
- const uint8_t *csd;
- size_t csd_size;
- if (esds.getCodecSpecificInfo(
- (const void **)&csd, &csd_size) != OK) {
- return ERROR_MALFORMED;
- }
-
- addCodecSpecificData(sampleDesc->mFormat, 0, csd, csd_size);
-
- if (sampleDesc->mType != FOURCC('m', 'p', '4', 'a')) {
- return OK;
- }
-
- if (csd_size == 0) {
- // There's no further information, i.e. no codec specific data
- // Let's assume that the information provided in the mpeg4 headers
- // is accurate and hope for the best.
-
- return OK;
- }
-
- if (csd_size < 2) {
- return ERROR_MALFORMED;
- }
-
- uint32_t objectType = csd[0] >> 3;
-
- if (objectType == 31) {
- return ERROR_UNSUPPORTED;
- }
-
- uint32_t freqIndex = (csd[0] & 7) << 1 | (csd[1] >> 7);
- int32_t sampleRate = 0;
- int32_t numChannels = 0;
- if (freqIndex == 15) {
- if (csd_size < 5) {
- return ERROR_MALFORMED;
- }
-
- sampleRate = (csd[1] & 0x7f) << 17
- | csd[2] << 9
- | csd[3] << 1
- | (csd[4] >> 7);
-
- numChannels = (csd[4] >> 3) & 15;
- } else {
- static uint32_t kSamplingRate[] = {
- 96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050,
- 16000, 12000, 11025, 8000, 7350
- };
-
- if (freqIndex == 13 || freqIndex == 14) {
- return ERROR_MALFORMED;
- }
-
- sampleRate = kSamplingRate[freqIndex];
- numChannels = (csd[1] >> 3) & 15;
- }
-
- if (numChannels == 0) {
- return ERROR_UNSUPPORTED;
- }
-
- sampleDesc->mFormat->setInt32("sample-rate", sampleRate);
- sampleDesc->mFormat->setInt32("channel-count", numChannels);
-
- return OK;
-}
-
-status_t FragmentedMP4Parser::parseMediaData(
- uint32_t type, size_t offset, uint64_t size) {
- ALOGV("skipping 'mdat' chunk at offsets 0x%08lx-0x%08llx.",
- mBufferPos + offset, mBufferPos + size);
-
- sp<ABuffer> buffer = new ABuffer(size - offset);
- memcpy(buffer->data(), mBuffer->data() + offset, size - offset);
-
- mMediaData.push();
- MediaDataInfo *info = &mMediaData.editItemAt(mMediaData.size() - 1);
- info->mBuffer = buffer;
- info->mOffset = mBufferPos + offset;
-
- if (mMediaData.size() > 10) {
- ALOGV("suspending for now.");
- mSuspended = true;
- }
-
- return OK;
-}
-
-status_t FragmentedMP4Parser::parseSegmentIndex(
- uint32_t type, size_t offset, uint64_t size) {
- ALOGV("sidx box type %d, offset %d, size %d", type, int(offset), int(size));
-// AString sidxstr;
-// hexdump(mBuffer->data() + offset, size, 0 /* indent */, &sidxstr);
-// ALOGV("raw sidx:");
-// ALOGV("%s", sidxstr.c_str());
- if (offset + 12 > size) {
- return -EINVAL;
- }
-
- uint32_t flags = readU32(offset);
-
- uint32_t version = flags >> 24;
- flags &= 0xffffff;
-
- ALOGV("sidx version %d", version);
-
- uint32_t referenceId = readU32(offset + 4);
- uint32_t timeScale = readU32(offset + 8);
- ALOGV("sidx refid/timescale: %d/%d", referenceId, timeScale);
-
- uint64_t earliestPresentationTime;
- uint64_t firstOffset;
-
- offset += 12;
-
- if (version == 0) {
- if (offset + 8 > size) {
- return -EINVAL;
- }
- earliestPresentationTime = readU32(offset);
- firstOffset = readU32(offset + 4);
- offset += 8;
- } else {
- if (offset + 16 > size) {
- return -EINVAL;
- }
- earliestPresentationTime = readU64(offset);
- firstOffset = readU64(offset + 8);
- offset += 16;
- }
- ALOGV("sidx pres/off: %Ld/%Ld", earliestPresentationTime, firstOffset);
-
- if (offset + 4 > size) {
- return -EINVAL;
- }
- if (readU16(offset) != 0) { // reserved
- return -EINVAL;
- }
- int32_t referenceCount = readU16(offset + 2);
- offset += 4;
- ALOGV("refcount: %d", referenceCount);
-
- if (offset + referenceCount * 12 > size) {
- return -EINVAL;
- }
-
- TrackInfo *info = editTrack(mCurrentTrackID);
- uint64_t total_duration = 0;
- for (int i = 0; i < referenceCount; i++) {
- uint32_t d1 = readU32(offset);
- uint32_t d2 = readU32(offset + 4);
- uint32_t d3 = readU32(offset + 8);
-
- if (d1 & 0x80000000) {
- ALOGW("sub-sidx boxes not supported yet");
- }
- bool sap = d3 & 0x80000000;
- bool saptype = d3 >> 28;
- if (!sap || saptype > 2) {
- ALOGW("not a stream access point, or unsupported type");
- }
- total_duration += d2;
- offset += 12;
- ALOGV(" item %d, %08x %08x %08x", i, d1, d2, d3);
- SidxEntry se;
- se.mSize = d1 & 0x7fffffff;
- se.mDurationUs = 1000000LL * d2 / timeScale;
- info->mSidx.add(se);
- }
-
- info->mSidxDuration = total_duration * 1000000 / timeScale;
- ALOGV("duration: %lld", info->mSidxDuration);
- return OK;
-}
-
-status_t FragmentedMP4Parser::parseTrackExtends(
- uint32_t type, size_t offset, uint64_t size) {
- if (offset + 24 > size) {
- return -EINVAL;
- }
-
- if (readU32(offset) != 0) {
- return -EINVAL;
- }
-
- uint32_t trackID = readU32(offset + 4);
-
- TrackInfo *info = editTrack(trackID, true /* createIfNecessary */);
- info->mDefaultSampleDescriptionIndex = readU32(offset + 8);
- info->mDefaultSampleDuration = readU32(offset + 12);
- info->mDefaultSampleSize = readU32(offset + 16);
- info->mDefaultSampleFlags = readU32(offset + 20);
-
- return OK;
-}
-
-FragmentedMP4Parser::TrackInfo *FragmentedMP4Parser::editTrack(
- uint32_t trackID, bool createIfNecessary) {
- ssize_t i = mTracks.indexOfKey(trackID);
-
- if (i >= 0) {
- return &mTracks.editValueAt(i);
- }
-
- if (!createIfNecessary) {
- return NULL;
- }
-
- TrackInfo info;
- info.mTrackID = trackID;
- info.mFlags = 0;
- info.mDuration = 0xffffffff;
- info.mSidxDuration = 0;
- info.mMediaTimeScale = 0;
- info.mMediaHandlerType = 0;
- info.mDefaultSampleDescriptionIndex = 0;
- info.mDefaultSampleDuration = 0;
- info.mDefaultSampleSize = 0;
- info.mDefaultSampleFlags = 0;
-
- info.mDecodingTime = 0;
-
- mTracks.add(trackID, info);
- return &mTracks.editValueAt(mTracks.indexOfKey(trackID));
-}
-
-status_t FragmentedMP4Parser::parseTrackFragmentHeader(
- uint32_t type, size_t offset, uint64_t size) {
- if (offset + 8 > size) {
- return -EINVAL;
- }
-
- uint32_t flags = readU32(offset);
-
- if (flags & 0xff000000) {
- return -EINVAL;
- }
-
- mTrackFragmentHeaderInfo.mFlags = flags;
-
- mTrackFragmentHeaderInfo.mTrackID = readU32(offset + 4);
- offset += 8;
-
- if (flags & TrackFragmentHeaderInfo::kBaseDataOffsetPresent) {
- if (offset + 8 > size) {
- return -EINVAL;
- }
-
- mTrackFragmentHeaderInfo.mBaseDataOffset = readU64(offset);
- offset += 8;
- }
-
- if (flags & TrackFragmentHeaderInfo::kSampleDescriptionIndexPresent) {
- if (offset + 4 > size) {
- return -EINVAL;
- }
-
- mTrackFragmentHeaderInfo.mSampleDescriptionIndex = readU32(offset);
- offset += 4;
- }
-
- if (flags & TrackFragmentHeaderInfo::kDefaultSampleDurationPresent) {
- if (offset + 4 > size) {
- return -EINVAL;
- }
-
- mTrackFragmentHeaderInfo.mDefaultSampleDuration = readU32(offset);
- offset += 4;
- }
-
- if (flags & TrackFragmentHeaderInfo::kDefaultSampleSizePresent) {
- if (offset + 4 > size) {
- return -EINVAL;
- }
-
- mTrackFragmentHeaderInfo.mDefaultSampleSize = readU32(offset);
- offset += 4;
- }
-
- if (flags & TrackFragmentHeaderInfo::kDefaultSampleFlagsPresent) {
- if (offset + 4 > size) {
- return -EINVAL;
- }
-
- mTrackFragmentHeaderInfo.mDefaultSampleFlags = readU32(offset);
- offset += 4;
- }
-
- if (!(flags & TrackFragmentHeaderInfo::kBaseDataOffsetPresent)) {
- // This should point to the position of the first byte of the
- // enclosing 'moof' container for the first track and
- // the end of the data of the preceding fragment for subsequent
- // tracks.
-
- CHECK_GE(mStack.size(), 2u);
-
- mTrackFragmentHeaderInfo.mBaseDataOffset =
- mStack.itemAt(mStack.size() - 2).mOffset;
-
- // XXX TODO: This does not do the right thing for the 2nd and
- // subsequent tracks yet.
- }
-
- mTrackFragmentHeaderInfo.mDataOffset =
- mTrackFragmentHeaderInfo.mBaseDataOffset;
-
- TrackInfo *trackInfo = editTrack(mTrackFragmentHeaderInfo.mTrackID);
-
- if (trackInfo->mFragments.empty()
- || (*trackInfo->mFragments.begin())->complete()) {
- trackInfo->mFragments.push_back(new DynamicTrackFragment);
- }
-
- return OK;
-}
-
-status_t FragmentedMP4Parser::parseTrackFragmentRun(
- uint32_t type, size_t offset, uint64_t size) {
- if (offset + 8 > size) {
- return -EINVAL;
- }
-
- enum {
- kDataOffsetPresent = 0x01,
- kFirstSampleFlagsPresent = 0x04,
- kSampleDurationPresent = 0x100,
- kSampleSizePresent = 0x200,
- kSampleFlagsPresent = 0x400,
- kSampleCompositionTimeOffsetPresent = 0x800,
- };
-
- uint32_t flags = readU32(offset);
-
- if (flags & 0xff000000) {
- return -EINVAL;
- }
-
- if ((flags & kFirstSampleFlagsPresent) && (flags & kSampleFlagsPresent)) {
- // These two shall not be used together.
- return -EINVAL;
- }
-
- uint32_t sampleCount = readU32(offset + 4);
- offset += 8;
-
- uint64_t dataOffset = mTrackFragmentHeaderInfo.mDataOffset;
-
- uint32_t firstSampleFlags = 0;
-
- if (flags & kDataOffsetPresent) {
- if (offset + 4 > size) {
- return -EINVAL;
- }
-
- int32_t dataOffsetDelta = (int32_t)readU32(offset);
-
- dataOffset = mTrackFragmentHeaderInfo.mBaseDataOffset + dataOffsetDelta;
-
- offset += 4;
- }
-
- if (flags & kFirstSampleFlagsPresent) {
- if (offset + 4 > size) {
- return -EINVAL;
- }
-
- firstSampleFlags = readU32(offset);
- offset += 4;
- }
-
- TrackInfo *info = editTrack(mTrackFragmentHeaderInfo.mTrackID);
-
- if (info == NULL) {
- return -EINVAL;
- }
-
- uint32_t sampleDuration = 0, sampleSize = 0, sampleFlags = 0,
- sampleCtsOffset = 0;
-
- size_t bytesPerSample = 0;
- if (flags & kSampleDurationPresent) {
- bytesPerSample += 4;
- } else if (mTrackFragmentHeaderInfo.mFlags
- & TrackFragmentHeaderInfo::kDefaultSampleDurationPresent) {
- sampleDuration = mTrackFragmentHeaderInfo.mDefaultSampleDuration;
- } else {
- sampleDuration = info->mDefaultSampleDuration;
- }
-
- if (flags & kSampleSizePresent) {
- bytesPerSample += 4;
- } else if (mTrackFragmentHeaderInfo.mFlags
- & TrackFragmentHeaderInfo::kDefaultSampleSizePresent) {
- sampleSize = mTrackFragmentHeaderInfo.mDefaultSampleSize;
- } else {
- sampleSize = info->mDefaultSampleSize;
- }
-
- if (flags & kSampleFlagsPresent) {
- bytesPerSample += 4;
- } else if (mTrackFragmentHeaderInfo.mFlags
- & TrackFragmentHeaderInfo::kDefaultSampleFlagsPresent) {
- sampleFlags = mTrackFragmentHeaderInfo.mDefaultSampleFlags;
- } else {
- sampleFlags = info->mDefaultSampleFlags;
- }
-
- if (flags & kSampleCompositionTimeOffsetPresent) {
- bytesPerSample += 4;
- } else {
- sampleCtsOffset = 0;
- }
-
- if (offset + sampleCount * bytesPerSample > size) {
- return -EINVAL;
- }
-
- uint32_t sampleDescIndex =
- (mTrackFragmentHeaderInfo.mFlags
- & TrackFragmentHeaderInfo::kSampleDescriptionIndexPresent)
- ? mTrackFragmentHeaderInfo.mSampleDescriptionIndex
- : info->mDefaultSampleDescriptionIndex;
-
- for (uint32_t i = 0; i < sampleCount; ++i) {
- if (flags & kSampleDurationPresent) {
- sampleDuration = readU32(offset);
- offset += 4;
- }
-
- if (flags & kSampleSizePresent) {
- sampleSize = readU32(offset);
- offset += 4;
- }
-
- if (flags & kSampleFlagsPresent) {
- sampleFlags = readU32(offset);
- offset += 4;
- }
-
- if (flags & kSampleCompositionTimeOffsetPresent) {
- sampleCtsOffset = readU32(offset);
- offset += 4;
- }
-
- ALOGV("adding sample at offset 0x%08llx, size %u, duration %u, "
- "sampleDescIndex=%u, flags 0x%08x",
- dataOffset, sampleSize, sampleDuration,
- sampleDescIndex,
- (flags & kFirstSampleFlagsPresent) && i == 0
- ? firstSampleFlags : sampleFlags);
-
- const sp<TrackFragment> &fragment = *--info->mFragments.end();
-
- uint32_t decodingTime = info->mDecodingTime;
- info->mDecodingTime += sampleDuration;
- uint32_t presentationTime = decodingTime + sampleCtsOffset;
-
- static_cast<DynamicTrackFragment *>(
- fragment.get())->addSample(
- dataOffset,
- sampleSize,
- presentationTime,
- sampleDescIndex,
- ((flags & kFirstSampleFlagsPresent) && i == 0)
- ? firstSampleFlags : sampleFlags);
-
- dataOffset += sampleSize;
- }
-
- mTrackFragmentHeaderInfo.mDataOffset = dataOffset;
-
- return OK;
-}
-
-void FragmentedMP4Parser::copyBuffer(
- sp<ABuffer> *dst, size_t offset, uint64_t size) const {
- sp<ABuffer> buf = new ABuffer(size);
- memcpy(buf->data(), mBuffer->data() + offset, size);
-
- *dst = buf;
-}
-
-} // namespace android
generated by cgit v1.1 at 2024-05-13 23:44:53 +0000