void FormatContext::close()
{
if (!m_raw)
return;
if (isOpened())
{
closeCodecContexts();
AVIOContext *avio = m_raw->pb;
if (isOutput())
{
OutputFormat fmt = outputFormat();
if (!(fmt.flags() & AVFMT_NOFILE) && !(m_raw->flags & AVFMT_FLAG_CUSTOM_IO)) {
avio_close(m_raw->pb);
}
avformat_free_context(m_raw);
}
else
{
avformat_close_input(&m_raw);
}
m_raw = avformat_alloc_context();
m_monitor.reset(new char);
m_isOpened = false;
m_streamsInfoFound = false;
m_headerWriten = false;
// To prevent free not out custom IO, e.g. setted via raw pointer access
if (m_customIO) {
// Close custom IO
av_freep(&avio->buffer);
av_freep(&avio);
m_customIO = false;
}
}
}
void FormatContext::openOutput(const string &uri, OutputFormat format, AVDictionary **options, OptionalErrorCode ec)
{
clear_if(ec);
if (!m_raw)
{
throws_if(ec, Errors::Unallocated);
return;
}
if (isOpened())
{
throws_if(ec, Errors::FormatAlreadyOpened);
return;
}
if (format.isNull())
format = outputFormat();
else
setFormat(format);
if (format.isNull())
{
// Guess format
format = guessOutputFormat(string(), uri);
if (format.isNull())
{
fflog(AV_LOG_ERROR, "Can't guess output format");
throws_if(ec, Errors::FormatNullOutputFormat);
return;
}
setFormat(format);
}
// Fix stream flags
#if !USE_CODECPAR
FF_DISABLE_DEPRECATION_WARNINGS
for (size_t i = 0; i < streamsCount(); ++i) {
auto st = stream(i);
if (st.raw()->codec) {
if (outputFormat().isFlags(AVFMT_GLOBALHEADER)) {
st.raw()->codec->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;
}
}
}
FF_ENABLE_DEPRECATION_WARNINGS
#endif
resetSocketAccess();
if (!(format.flags() & AVFMT_NOFILE))
{
int sts = avio_open2(&m_raw->pb, uri.c_str(), AVIO_FLAG_WRITE, nullptr, options);
if (sts < 0)
{
throws_if(ec, sts, ffmpeg_category());
return;
}
}
m_uri = uri;
m_isOpened = true;
}