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fix: Fix failure on very short WebVTT files (#1216) 

Fix a bug that if the webvtt file is very short, e.g. only contains one
block

    WEBVTT

    00:00:00.500 --> 00:00:02.000
    The Web is always changing

shaka packager will report error: "Packaging Error: 6 (END_OF_STREAM)".

Fixes #1217
This commit is contained in:
xyb 2023-07-12 09:07:07 -07:00 committed by GitHub
parent d9d3c7f8be
commit dab165d3e5
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 5 additions and 2 deletions
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7
packager/media/demuxer/demuxer.cc
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@ -162,13 +162,16 @@ Status Demuxer::InitializeParser() {
// Read enough bytes before detecting the container.
int64_t bytes_read = 0;
bool eof = false;
while (static_cast<size_t>(bytes_read) < kInitBufSize) {
int64_t read_result =
media_file_->Read(buffer_.get() + bytes_read, kInitBufSize);
if (read_result < 0)
return Status(error::FILE_FAILURE, "Cannot read file " + file_name_);
if (read_result == 0)
if (read_result == 0) {
eof = true;
break;
}
bytes_read += read_result;
}
container_name_ = DetermineContainer(buffer_.get(), bytes_read);
@ -224,7 +227,7 @@ Status Demuxer::InitializeParser() {
// descriptor |media_file_| instead of opening the same file again.
static_cast<mp4::MP4MediaParser*>(parser_.get())->LoadMoov(file_name_);
}
if (!parser_->Parse(buffer_.get(), bytes_read)) {
if (!parser_->Parse(buffer_.get(), bytes_read) || (eof && !parser_->Flush())) {
return Status(error::PARSER_FAILURE,
"Cannot parse media file " + file_name_);
}