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Merge "SampleTunerTIS HAL Process TS for SectionEvents"

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Lucas Gates 2022-07-06 20:22:02 +00:00 committed by Android (Google) Code Review
commit 0babc2e472
2 changed files with 58 additions and 14 deletions
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68
tv/tuner/aidl/default/Filter.cpp
View file

@ -961,24 +961,64 @@ void Filter::updateRecordOutput(vector<int8_t>& data) {
return ::ndk::ScopedAStatus::ok();
}
// Read PSI (Program Specific Information) Sections from TransportStreams
// as defined in ISO/IEC 13818-1 Section 2.4.4
bool Filter::writeSectionsAndCreateEvent(vector<int8_t>& data) {
// TODO check how many sections has been read
ALOGD("[Filter] section handler");
if (!writeDataToFilterMQ(data)) {
return false;
}
DemuxFilterSectionEvent secEvent;
secEvent = {
// temp dump meta data
.tableId = 0,
.version = 1,
.sectionNum = 1,
.dataLength = static_cast<int32_t>(data.size()),
};
{
std::lock_guard<std::mutex> lock(mFilterEventsLock);
mFilterEvents.push_back(DemuxFilterEvent::make<DemuxFilterEvent::Tag::section>(secEvent));
// Transport Stream Packets are 188 bytes long, as defined in the
// Introduction of ISO/IEC 13818-1
for (int i = 0; i < data.size(); i += 188) {
if (mSectionSizeLeft == 0) {
// Location for sectionSize as defined by Section 2.4.4
// Note that the first 4 bytes skipped are the TsHeader
mSectionSizeLeft = ((data[i + 5] & 0x0f) << 8) | (data[i + 6] & 0xff);
mSectionSizeLeft += 3;
if (DEBUG_FILTER) {
ALOGD("[Filter] section data length %d", mSectionSizeLeft);
}
}
// 184 bytes per packet is derived by subtracting the 4 byte length of
// the TsHeader from its 188 byte packet size
uint32_t endPoint = min(184u, mSectionSizeLeft);
// append data and check size
vector<int8_t>::const_iterator first = data.begin() + i + 4;
vector<int8_t>::const_iterator last = data.begin() + i + 4 + endPoint;
mSectionOutput.insert(mSectionOutput.end(), first, last);
// size does not match then continue
mSectionSizeLeft -= endPoint;
if (DEBUG_FILTER) {
ALOGD("[Filter] section data left %d", mSectionSizeLeft);
}
if (mSectionSizeLeft > 0) {
continue;
}
if (!writeDataToFilterMQ(mSectionOutput)) {
mSectionOutput.clear();
return false;
}
DemuxFilterSectionEvent secEvent;
secEvent = {
// temp dump meta data
.tableId = 0,
.version = 1,
.sectionNum = 1,
.dataLength = static_cast<int32_t>(mSectionOutput.size()),
};
if (DEBUG_FILTER) {
ALOGD("[Filter] assembled section data length %lld", secEvent.dataLength);
}
{
std::lock_guard<std::mutex> lock(mFilterEventsLock);
mFilterEvents.push_back(
DemuxFilterEvent::make<DemuxFilterEvent::Tag::section>(secEvent));
}
mSectionOutput.clear();
}
return true;

4
tv/tuner/aidl/default/Filter.h
View file

@ -258,6 +258,10 @@ class Filter : public BnFilter {
std::mutex mFilterOutputLock;
std::mutex mRecordFilterOutputLock;
// handle single Section filter
uint32_t mSectionSizeLeft = 0;
vector<int8_t> mSectionOutput;
// temp handle single PES filter
// TODO handle mulptiple Pes filters
uint32_t mPesSizeLeft = 0;