void
avi_reader_c::parse_subtitle_chunks() {
int i;
for (i = 0; AVI_text_tracks(m_avi) > i; ++i) {
AVI_set_text_track(m_avi, i);
if (AVI_text_chunks(m_avi) == 0)
continue;
int chunk_size = AVI_read_text_chunk(m_avi, nullptr);
if (0 >= chunk_size)
continue;
memory_cptr chunk(memory_c::alloc(chunk_size));
chunk_size = AVI_read_text_chunk(m_avi, reinterpret_cast<char *>(chunk->get_buffer()));
if (0 >= chunk_size)
continue;
avi_subs_demuxer_t demuxer;
try {
mm_mem_io_c io(chunk->get_buffer(), chunk_size);
uint32_t tag = io.read_uint32_be();
if (GAB2_TAG != tag)
continue;
io.skip(1);
while (!io.eof() && (io.getFilePointer() < static_cast<size_t>(chunk_size))) {
uint16_t id = io.read_uint16_le();
int len = io.read_uint32_le();
if (GAB2_ID_SUBTITLES == id) {
demuxer.m_subtitles = memory_c::alloc(len);
len = io.read(demuxer.m_subtitles->get_buffer(), len);
demuxer.m_subtitles->set_size(len);
} else
io.skip(len);
}
if (0 != demuxer.m_subtitles->get_size()) {
mm_text_io_c text_io(new mm_mem_io_c(demuxer.m_subtitles->get_buffer(), demuxer.m_subtitles->get_size()));
demuxer.m_type
= srt_parser_c::probe(&text_io) ? avi_subs_demuxer_t::TYPE_SRT
: ssa_parser_c::probe(&text_io) ? avi_subs_demuxer_t::TYPE_SSA
: avi_subs_demuxer_t::TYPE_UNKNOWN;
if (avi_subs_demuxer_t::TYPE_UNKNOWN != demuxer.m_type)
m_subtitle_demuxers.push_back(demuxer);
}
} catch (...) {
}
}
}
timecode_factory_cptr
timecode_factory_c::create_fps_factory(int64_t default_duration,
const std::string &source_name,
int64_t tid) {
mm_text_io_c text_io(new mm_mem_io_c(NULL, 0, 1024));
text_io.puts("# timecode format v1\n");
text_io.puts(boost::format("assume %1%\n") % to_string(1000000000.0 / default_duration, 9));
text_io.setFilePointer(0, seek_beginning);
timecode_factory_cptr factory(new timecode_factory_v1_c("dummy", source_name, tid));
factory->parse(text_io);
return factory;
}
void
avi_reader_c::identify_attachments() {
size_t i;
for (i = 0; m_subtitle_demuxers.size() > i; ++i) {
try {
avi_subs_demuxer_t &demuxer = m_subtitle_demuxers[i];
mm_text_io_c text_io(new mm_mem_io_c(demuxer.m_subtitles->get_buffer(), demuxer.m_subtitles->get_size()));
ssa_parser_c parser(this, &text_io, m_ti.m_fname, i + 1 + AVI_audio_tracks(m_avi));
parser.set_attachment_id_base(g_attachments.size());
parser.parse();
} catch (...) {
}
}
for (i = 0; i < g_attachments.size(); i++)
id_result_attachment(g_attachments[i].ui_id, g_attachments[i].mime_type, g_attachments[i].data->get_size(), g_attachments[i].name, g_attachments[i].description);
}
