void
avi_reader_c::create_mpeg1_2_packetizer() {
std::shared_ptr<M2VParser> m2v_parser(new M2VParser);
m2v_parser->SetProbeMode();
if (m_ti.m_private_data && (m_ti.m_private_data->get_size() < sizeof(alBITMAPINFOHEADER)))
m2v_parser->WriteData(m_ti.m_private_data->get_buffer() + sizeof(alBITMAPINFOHEADER), m_ti.m_private_data->get_size() - sizeof(alBITMAPINFOHEADER));
unsigned int frame_number = 0;
unsigned int state = m2v_parser->GetState();
while ((frame_number < std::min(m_max_video_frames, 100u)) && (MPV_PARSER_STATE_FRAME != state)) {
++frame_number;
int size = AVI_frame_size(m_avi, frame_number - 1);
if (0 == size)
continue;
AVI_set_video_position(m_avi, frame_number - 1);
memory_cptr buffer = memory_c::alloc(size);
int key = 0;
int num_read = AVI_read_frame(m_avi, reinterpret_cast<char *>(buffer->get_buffer()), &key);
if (0 >= num_read)
continue;
m2v_parser->WriteData(buffer->get_buffer(), num_read);
state = m2v_parser->GetState();
}
AVI_set_video_position(m_avi, 0);
if (MPV_PARSER_STATE_FRAME != state)
mxerror_tid(m_ti.m_fname, 0, Y("Could not extract the sequence header from this MPEG-1/2 track.\n"));
MPEG2SequenceHeader seq_hdr = m2v_parser->GetSequenceHeader();
std::shared_ptr<MPEGFrame> frame(m2v_parser->ReadFrame());
if (!frame)
mxerror_tid(m_ti.m_fname, 0, Y("Could not extract the sequence header from this MPEG-1/2 track.\n"));
int display_width = ((0 >= seq_hdr.aspectRatio) || (1 == seq_hdr.aspectRatio)) ? seq_hdr.width : static_cast<int>(seq_hdr.height * seq_hdr.aspectRatio);
MPEGChunk *raw_seq_hdr = m2v_parser->GetRealSequenceHeader();
if (raw_seq_hdr)
m_ti.m_private_data = memory_c::clone(raw_seq_hdr->GetPointer(), raw_seq_hdr->GetSize());
else
m_ti.m_private_data.reset();
m_vptzr = add_packetizer(new mpeg1_2_video_packetizer_c(this, m_ti, m2v_parser->GetMPEGVersion(), seq_hdr.frameOrFieldRate,
seq_hdr.width, seq_hdr.height, display_width, seq_hdr.height, false));
show_packetizer_info(0, PTZR(m_vptzr));
}
void
avi_reader_c::create_mpeg4_p10_packetizer() {
try {
mpeg4_p10_es_video_packetizer_c *ptzr = new mpeg4_p10_es_video_packetizer_c(this, m_ti);
m_vptzr = add_packetizer(ptzr);
ptzr->set_video_pixel_dimensions(AVI_video_width(m_avi), AVI_video_height(m_avi));
if (0 != m_fps)
ptzr->set_container_default_field_duration(1000000000ll / m_fps / 2);
uint32_t extra_data_size = get_uint32_le(&m_avi->bitmap_info_header->bi_size) - sizeof(alBITMAPINFOHEADER);
if (0 < extra_data_size) {
memory_cptr avc_extra_nalus = mpeg4::p10::avcc_to_nalus(reinterpret_cast<unsigned char *>(m_avi->bitmap_info_header + 1), extra_data_size);
if (avc_extra_nalus)
ptzr->add_extra_data(avc_extra_nalus);
}
set_avc_nal_size_size(ptzr);
show_packetizer_info(0, ptzr);
} catch (...) {
mxerror_tid(m_ti.m_fname, 0, Y("Could not extract the decoder specific config data (AVCC) from this AVC/h.264 track.\n"));
}
}
void
mpeg4_p10_video_packetizer_c::change_nalu_size_len(packet_cptr packet) {
unsigned char *src = packet->data->get_buffer();
int size = packet->data->get_size();
if (!src || !size)
return;
std::vector<int> nalu_sizes;
int src_pos = 0;
// Find all NALU sizes in this packet.
while (src_pos < size) {
if ((size - src_pos) < m_nalu_size_len_src)
break;
int nalu_size = get_uint_be(&src[src_pos], m_nalu_size_len_src);
nalu_size = std::min<int>(nalu_size, size - src_pos - m_nalu_size_len_src);
if (nalu_size > m_max_nalu_size)
mxerror_tid(m_ti.m_fname, m_ti.m_id, boost::format(Y("The chosen NALU size length of %1% is too small. Try using '4'.\n")) % m_nalu_size_len_dst);
src_pos += m_nalu_size_len_src + nalu_size;
nalu_sizes.push_back(nalu_size);
}
// Allocate memory if the new NALU size length is greater
// than the previous one. Otherwise reuse the existing memory.
if (m_nalu_size_len_dst > m_nalu_size_len_src) {
int new_size = size + nalu_sizes.size() * (m_nalu_size_len_dst - m_nalu_size_len_src);
packet->data = memory_cptr(new memory_c((unsigned char *)safemalloc(new_size), new_size, true));
}
// Copy the NALUs and write the new sized length field.
unsigned char *dst = packet->data->get_buffer();
src_pos = 0;
int dst_pos = 0;
size_t i;
for (i = 0; nalu_sizes.size() > i; ++i) {
int nalu_size = nalu_sizes[i];
put_uint_be(&dst[dst_pos], nalu_size, m_nalu_size_len_dst);
memmove(&dst[dst_pos + m_nalu_size_len_dst], &src[src_pos + m_nalu_size_len_src], nalu_size);
src_pos += m_nalu_size_len_src + nalu_size;
dst_pos += m_nalu_size_len_dst + nalu_size;
}
packet->data->set_size(dst_pos);
}
void
mpeg4_p2_video_packetizer_c::extract_config_data(packet_cptr &packet) {
if (m_ti.m_private_data)
return;
m_ti.m_private_data = memory_cptr{mpeg4::p2::parse_config_data(packet->data->get_buffer(), packet->data->get_size(), m_config_data)};
if (!m_ti.m_private_data)
mxerror_tid(m_ti.m_fname, m_ti.m_id, Y("Could not find the codec configuration data in the first MPEG-4 part 2 video frame. This track cannot be stored in native mode.\n"));
fix_codec_string();
set_codec_private(m_ti.m_private_data);
rerender_track_headers();
}
generic_packetizer_c *
avi_reader_c::create_vorbis_packetizer(int aid) {
try {
if (m_ti.m_private_data)
throw mtx::input::extended_x(Y("Invalid Vorbis headers in AVI audio track."));
auto c = m_ti.m_private_data->get_buffer();
if (2 != c[0])
throw mtx::input::extended_x(Y("Invalid Vorbis headers in AVI audio track."));
int offset = 1;
const int laced_size = m_ti.m_private_data->get_size();
int i;
int header_sizes[3];
unsigned char *headers[3];
for (i = 0; 2 > i; ++i) {
int size = 0;
while ((offset < laced_size) && (255u == c[offset])) {
size += 255;
++offset;
}
if ((laced_size - 1) <= offset)
throw mtx::input::extended_x(Y("Invalid Vorbis headers in AVI audio track."));
size += c[offset];
header_sizes[i] = size;
++offset;
}
headers[0] = &c[offset];
headers[1] = &c[offset + header_sizes[0]];
headers[2] = &c[offset + header_sizes[0] + header_sizes[1]];
header_sizes[2] = laced_size - offset - header_sizes[0] - header_sizes[1];
m_ti.m_private_data.reset();
return new vorbis_packetizer_c(this, m_ti, headers[0], header_sizes[0], headers[1], header_sizes[1], headers[2], header_sizes[2]);
} catch (mtx::exception &e) {
mxerror_tid(m_ti.m_fname, aid + 1, boost::format("%1%\n") % e.error());
// Never reached, but make the compiler happy:
return nullptr;
}
}
void
ogm_a_flac_demuxer_c::initialize() {
flac_header_extractor_c fhe(reader->m_ti.m_fname, serialno, mode);
if (!fhe.extract())
mxerror_tid(reader->m_ti.m_fname, track_id, Y("Could not read the FLAC header packets.\n"));
flac_header_packets = fhe.num_header_packets;
sample_rate = fhe.sample_rate;
channels = fhe.channels;
bits_per_sample = fhe.bits_per_sample;
last_granulepos = 0;
units_processed = 1;
if ((ofm_post_1_1_1 == mode) && !packet_data.empty() && (13 < packet_data.front()->get_size()))
packet_data.front()->set_offset(9);
}
generic_packetizer_c *
avi_reader_c::create_aac_packetizer(int aid,
avi_demuxer_t &demuxer) {
int profile, channels, sample_rate, output_sample_rate;
bool is_sbr;
bool headerless = (AVI_audio_format(m_avi) != 0x706d);
if (!m_ti.m_private_data
|| ( (0x706d == AVI_audio_format(m_avi))
&& ((sizeof(alWAVEFORMATEX) + 7) < m_ti.m_private_data->get_size()))) {
channels = AVI_audio_channels(m_avi);
sample_rate = AVI_audio_rate(m_avi);
if (44100 > sample_rate) {
profile = AAC_PROFILE_SBR;
output_sample_rate = sample_rate * 2;
is_sbr = true;
} else {
profile = AAC_PROFILE_MAIN;
output_sample_rate = sample_rate;
is_sbr = false;
}
unsigned char created_aac_data[AAC_MAX_PRIVATE_DATA_SIZE];
auto size = create_aac_data(created_aac_data, profile, channels, sample_rate, output_sample_rate, is_sbr);
m_ti.m_private_data = memory_c::clone(created_aac_data, size);
} else {
if (!parse_aac_data(m_ti.m_private_data->get_buffer(), m_ti.m_private_data->get_size(), profile, channels, sample_rate, output_sample_rate, is_sbr))
mxerror_tid(m_ti.m_fname, aid + 1, Y("This AAC track does not contain valid headers. Could not parse the AAC information.\n"));
if (is_sbr)
profile = AAC_PROFILE_SBR;
}
demuxer.m_samples_per_second = sample_rate;
demuxer.m_channels = channels;
generic_packetizer_c *packetizer = new aac_packetizer_c(this, m_ti, AAC_ID_MPEG4, profile, demuxer.m_samples_per_second, demuxer.m_channels, false, headerless);
if (is_sbr)
packetizer->set_audio_output_sampling_freq(output_sample_rate);
return packetizer;
}
void
generic_packetizer_c::add_packet(packet_cptr pack) {
if ((0 == m_num_packets) && m_ti.m_reset_timecodes)
m_ti.m_tcsync.displacement = -pack->timecode;
++m_num_packets;
if (!m_reader->m_ptzr_first_packet)
m_reader->m_ptzr_first_packet = this;
// strip elements to be removed
if ( (-1 != m_htrack_max_add_block_ids)
&& (pack->data_adds.size() > static_cast<size_t>(m_htrack_max_add_block_ids)))
pack->data_adds.resize(m_htrack_max_add_block_ids);
if (m_compressor) {
try {
pack->data = m_compressor->compress(pack->data);
size_t i;
for (i = 0; pack->data_adds.size() > i; ++i)
pack->data_adds[i] = m_compressor->compress(pack->data_adds[i]);
} catch (mtx::compression_x &e) {
mxerror_tid(m_ti.m_fname, m_ti.m_id, boost::format(Y("Compression failed: %1%\n")) % e.error());
}
}
pack->data->grab();
for (auto &data_add : pack->data_adds)
data_add->grab();
pack->source = this;
m_enqueued_bytes += pack->data->get_size();
if ((0 > pack->bref) && (0 <= pack->fref))
std::swap(pack->bref, pack->fref);
if (1 != m_connected_to)
add_packet2(pack);
else
m_deferred_packets.push_back(pack);
}
generic_packetizer_c *
avi_reader_c::create_dts_packetizer(int aid) {
try {
AVI_set_audio_track(m_avi, aid);
long audio_position = AVI_get_audio_position_index(m_avi);
unsigned int num_read = 0;
int dts_position = -1;
byte_buffer_c buffer;
dts_header_t dtsheader;
while ((-1 == dts_position) && (10 > num_read)) {
int chunk_size = AVI_read_audio_chunk(m_avi, nullptr);
if (0 < chunk_size) {
memory_cptr chunk = memory_c::alloc(chunk_size);
AVI_read_audio_chunk(m_avi, reinterpret_cast<char *>(chunk->get_buffer()));
buffer.add(chunk);
dts_position = find_dts_header(buffer.get_buffer(), buffer.get_size(), &dtsheader);
} else {
dts_position = find_dts_header(buffer.get_buffer(), buffer.get_size(), &dtsheader, true);
break;
}
}
if (-1 == dts_position)
throw false;
AVI_set_audio_position_index(m_avi, audio_position);
return new dts_packetizer_c(this, m_ti, dtsheader);
} catch (...) {
mxerror_tid(m_ti.m_fname, aid + 1, Y("Could not find valid DTS headers in this track's first frames.\n"));
return nullptr;
}
}
void
avi_reader_c::add_audio_demuxer(int aid) {
for (auto &demuxer : m_audio_demuxers)
if (demuxer.m_aid == aid) // Demuxer already added?
return;
AVI_set_audio_track(m_avi, aid);
if (AVI_read_audio_chunk(m_avi, nullptr) < 0) {
mxwarn(boost::format(Y("Could not find an index for audio track %1% (avilib error message: %2%). Skipping track.\n")) % (aid + 1) % AVI_strerror());
return;
}
avi_demuxer_t demuxer;
generic_packetizer_c *packetizer = nullptr;
alWAVEFORMATEX *wfe = m_avi->wave_format_ex[aid];
uint32_t audio_format = AVI_audio_format(m_avi);
demuxer.m_aid = aid;
demuxer.m_ptzr = -1;
demuxer.m_samples_per_second = AVI_audio_rate(m_avi);
demuxer.m_channels = AVI_audio_channels(m_avi);
demuxer.m_bits_per_sample = AVI_audio_bits(m_avi);
m_ti.m_id = aid + 1; // ID for this audio track.
m_ti.m_avi_block_align = get_uint16_le(&wfe->n_block_align);
m_ti.m_avi_avg_bytes_per_sec = get_uint32_le(&wfe->n_avg_bytes_per_sec);
m_ti.m_avi_samples_per_chunk = get_uint32_le(&m_avi->stream_headers[aid].dw_scale);
m_ti.m_avi_sample_scale = get_uint32_le(&m_avi->stream_headers[aid].dw_rate);
m_ti.m_avi_samples_per_sec = demuxer.m_samples_per_second;
if ((0xfffe == audio_format) && (get_uint16_le(&wfe->cb_size) >= (sizeof(alWAVEFORMATEXTENSION)))) {
alWAVEFORMATEXTENSIBLE *ext = reinterpret_cast<alWAVEFORMATEXTENSIBLE *>(wfe);
audio_format = get_uint32_le(&ext->extension.guid.data1);
} else if (get_uint16_le(&wfe->cb_size) > 0)
m_ti.m_private_data = memory_c::clone(wfe + 1, get_uint16_le(&wfe->cb_size));
else
m_ti.m_private_data.reset();
switch(audio_format) {
case 0x0001: // raw PCM audio
case 0x0003: // raw PCM audio (float)
packetizer = new pcm_packetizer_c(this, m_ti, demuxer.m_samples_per_second, demuxer.m_channels, demuxer.m_bits_per_sample, 0x0003 == audio_format ? pcm_packetizer_c::ieee_float : pcm_packetizer_c::little_endian_integer);
break;
case 0x0050: // MP2
case 0x0055: // MP3
packetizer = new mp3_packetizer_c(this, m_ti, demuxer.m_samples_per_second, demuxer.m_channels, false);
break;
case 0x2000: // AC3
packetizer = new ac3_packetizer_c(this, m_ti, demuxer.m_samples_per_second, demuxer.m_channels, 0);
break;
case 0x2001: // DTS
packetizer = create_dts_packetizer(aid);
break;
case 0x00ff:
case 0x706d: // AAC
packetizer = create_aac_packetizer(aid, demuxer);
break;
case 0x566f: // Vorbis
packetizer = create_vorbis_packetizer(aid);
break;
default:
mxerror_tid(m_ti.m_fname, aid + 1, boost::format(Y("Unknown/unsupported audio format 0x%|1$04x| for this audio track.\n")) % audio_format);
}
show_packetizer_info(aid + 1, packetizer);
demuxer.m_ptzr = add_packetizer(packetizer);
m_audio_demuxers.push_back(demuxer);
int i, maxchunks = AVI_audio_chunks(m_avi);
for (i = 0; i < maxchunks; i++)
m_bytes_to_process += AVI_audio_size(m_avi, i);
}
int
mpeg4_p2_video_packetizer_c::process_non_native(packet_cptr packet) {
extract_config_data(packet);
// Add a timecode and a duration if they've been given.
if (-1 != packet->timecode) {
if (!m_default_duration_forced)
m_available_timecodes.push_back(timecode_duration_t(packet->timecode, packet->duration));
else {
m_available_timecodes.push_back(timecode_duration_t(m_timecodes_generated * m_htrack_default_duration, m_htrack_default_duration));
++m_timecodes_generated;
}
} else if (0.0 == m_fps)
mxerror_tid(m_ti.m_fname, m_ti.m_id, Y("Cannot convert non-native MPEG4 video frames into native ones if the source container "
"provides neither timecodes nor a number of frames per second.\n"));
std::vector<video_frame_t> frames;
mpeg4::p2::find_frame_types(packet->data->get_buffer(), packet->data->get_size(), frames, m_config_data);
for (auto &frame : frames) {
if (!frame.is_coded) {
++m_statistics.m_num_n_vops;
int num_surplus_timecodes = static_cast<int>(m_available_timecodes.size()) - static_cast<int>(m_ref_frames.size() + m_b_frames.size());
if (0 < num_surplus_timecodes) {
std::deque<timecode_duration_t>::iterator start = m_available_timecodes.begin() + m_ref_frames.size() + m_b_frames.size();
std::deque<timecode_duration_t>::iterator end = start + num_surplus_timecodes;
if (0 != (m_ref_frames.size() + m_b_frames.size())) {
std::deque<timecode_duration_t>::iterator last = m_available_timecodes.begin() + m_ref_frames.size() + m_b_frames.size() - 1;
std::deque<timecode_duration_t>::iterator cur = start;
while (cur != end) {
last->m_duration = std::max(last->m_duration, static_cast<int64_t>(0)) + std::max(cur->m_duration, static_cast<int64_t>(0));
++cur;
}
}
m_available_timecodes.erase(start, end);
m_statistics.m_num_dropped_timecodes += num_surplus_timecodes;
}
continue;
}
if (FRAME_TYPE_I == frame.type)
++m_statistics.m_num_i_frames;
else if (FRAME_TYPE_P == frame.type)
++m_statistics.m_num_p_frames;
else
++m_statistics.m_num_b_frames;
// Maybe we can flush queued frames now. But only if we don't have
// a B frame.
if (FRAME_TYPE_B != frame.type)
flush_frames(false);
frame.data = (unsigned char *)safememdup(packet->data->get_buffer() + frame.pos, frame.size);
frame.timecode = -1;
if (FRAME_TYPE_B == frame.type)
m_b_frames.push_back(frame);
else
m_ref_frames.push_back(frame);
}
m_previous_timecode = m_available_timecodes.back().m_timecode;
return FILE_STATUS_MOREDATA;
}
generic_packetizer_c::generic_packetizer_c(generic_reader_c *reader,
track_info_c &ti)
: m_num_packets{}
, m_next_packet_wo_assigned_timecode{}
, m_free_refs{-1}
, m_next_free_refs{-1}
, m_enqueued_bytes{}
, m_safety_last_timecode{}
, m_safety_last_duration{}
, m_track_entry{}
, m_hserialno{-1}
, m_htrack_type{-1}
, m_htrack_min_cache{}
, m_htrack_max_cache{-1}
, m_htrack_default_duration{-1}
, m_default_duration_forced{true}
, m_default_track_warning_printed{}
, m_huid{}
, m_htrack_max_add_block_ids{-1}
, m_haudio_sampling_freq{-1.0}
, m_haudio_output_sampling_freq{-1.0}
, m_haudio_channels{-1}
, m_haudio_bit_depth{-1}
, m_hvideo_interlaced_flag{-1}
, m_hvideo_pixel_width{-1}
, m_hvideo_pixel_height{-1}
, m_hvideo_display_width{-1}
, m_hvideo_display_height{-1}
, m_hcompression{COMPRESSION_UNSPECIFIED}
, m_timestamp_factory_application_mode{TFA_AUTOMATIC}
, m_last_cue_timecode{-1}
, m_has_been_flushed{}
, m_prevent_lacing{}
, m_connected_successor{}
, m_ti{ti}
, m_reader{reader}
, m_connected_to{}
, m_correction_timecode_offset{}
, m_append_timecode_offset{}
, m_max_timecode_seen{}
, m_relaxed_timecode_checking{}
{
// Let's see if the user specified timecode sync for this track.
if (mtx::includes(m_ti.m_timecode_syncs, m_ti.m_id))
m_ti.m_tcsync = m_ti.m_timecode_syncs[m_ti.m_id];
else if (mtx::includes(m_ti.m_timecode_syncs, -1))
m_ti.m_tcsync = m_ti.m_timecode_syncs[-1];
if (0 == m_ti.m_tcsync.numerator)
m_ti.m_tcsync.numerator = 1;
if (0 == m_ti.m_tcsync.denominator)
m_ti.m_tcsync.denominator = 1;
// Let's see if the user specified "reset timecodes" for this track.
m_ti.m_reset_timecodes = mtx::includes(m_ti.m_reset_timecodes_specs, m_ti.m_id) || mtx::includes(m_ti.m_reset_timecodes_specs, -1);
// Let's see if the user has specified which cues he wants for this track.
if (mtx::includes(m_ti.m_cue_creations, m_ti.m_id))
m_ti.m_cues = m_ti.m_cue_creations[m_ti.m_id];
else if (mtx::includes(m_ti.m_cue_creations, -1))
m_ti.m_cues = m_ti.m_cue_creations[-1];
// Let's see if the user has given a default track flag for this track.
if (mtx::includes(m_ti.m_default_track_flags, m_ti.m_id))
m_ti.m_default_track = m_ti.m_default_track_flags[m_ti.m_id];
else if (mtx::includes(m_ti.m_default_track_flags, -1))
m_ti.m_default_track = m_ti.m_default_track_flags[-1];
// Let's see if the user has given a fix avc fps flag for this track.
if (mtx::includes(m_ti.m_fix_bitstream_frame_rate_flags, m_ti.m_id))
m_ti.m_fix_bitstream_frame_rate = m_ti.m_fix_bitstream_frame_rate_flags[m_ti.m_id];
else if (mtx::includes(m_ti.m_fix_bitstream_frame_rate_flags, -1))
m_ti.m_fix_bitstream_frame_rate = m_ti.m_fix_bitstream_frame_rate_flags[-1];
// Let's see if the user has given a forced track flag for this track.
if (mtx::includes(m_ti.m_forced_track_flags, m_ti.m_id))
m_ti.m_forced_track = m_ti.m_forced_track_flags[m_ti.m_id];
else if (mtx::includes(m_ti.m_forced_track_flags, -1))
m_ti.m_forced_track = m_ti.m_forced_track_flags[-1];
// Let's see if the user has given a enabled track flag for this track.
if (mtx::includes(m_ti.m_enabled_track_flags, m_ti.m_id))
m_ti.m_enabled_track = m_ti.m_enabled_track_flags[m_ti.m_id];
else if (mtx::includes(m_ti.m_enabled_track_flags, -1))
m_ti.m_enabled_track = m_ti.m_enabled_track_flags[-1];
// Let's see if the user has specified a language for this track.
if (mtx::includes(m_ti.m_languages, m_ti.m_id))
m_ti.m_language = m_ti.m_languages[m_ti.m_id];
else if (mtx::includes(m_ti.m_languages, -1))
m_ti.m_language = m_ti.m_languages[-1];
// Let's see if the user has specified a sub charset for this track.
if (mtx::includes(m_ti.m_sub_charsets, m_ti.m_id))
m_ti.m_sub_charset = m_ti.m_sub_charsets[m_ti.m_id];
else if (mtx::includes(m_ti.m_sub_charsets, -1))
m_ti.m_sub_charset = m_ti.m_sub_charsets[-1];
// Let's see if the user has specified a sub charset for this track.
if (mtx::includes(m_ti.m_all_tags, m_ti.m_id))
m_ti.m_tags_file_name = m_ti.m_all_tags[m_ti.m_id];
else if (mtx::includes(m_ti.m_all_tags, -1))
m_ti.m_tags_file_name = m_ti.m_all_tags[-1];
if (!m_ti.m_tags_file_name.empty())
m_ti.m_tags = mtx::xml::ebml_tags_converter_c::parse_file(m_ti.m_tags_file_name, false);
// Let's see if the user has specified how this track should be compressed.
if (mtx::includes(m_ti.m_compression_list, m_ti.m_id))
m_ti.m_compression = m_ti.m_compression_list[m_ti.m_id];
else if (mtx::includes(m_ti.m_compression_list, -1))
m_ti.m_compression = m_ti.m_compression_list[-1];
// Let's see if the user has specified a name for this track.
if (mtx::includes(m_ti.m_track_names, m_ti.m_id))
m_ti.m_track_name = m_ti.m_track_names[m_ti.m_id];
else if (mtx::includes(m_ti.m_track_names, -1))
m_ti.m_track_name = m_ti.m_track_names[-1];
// Let's see if the user has specified external timecodes for this track.
if (mtx::includes(m_ti.m_all_ext_timecodes, m_ti.m_id))
m_ti.m_ext_timecodes = m_ti.m_all_ext_timecodes[m_ti.m_id];
else if (mtx::includes(m_ti.m_all_ext_timecodes, -1))
m_ti.m_ext_timecodes = m_ti.m_all_ext_timecodes[-1];
// Let's see if the user has specified an aspect ratio or display dimensions
// for this track.
int i = LOOKUP_TRACK_ID(m_ti.m_display_properties);
if (-2 != i) {
display_properties_t &dprop = m_ti.m_display_properties[i];
if (0 > dprop.aspect_ratio) {
set_video_display_dimensions(dprop.width, dprop.height, OPTION_SOURCE_COMMAND_LINE);
} else {
set_video_aspect_ratio(dprop.aspect_ratio, dprop.ar_factor, OPTION_SOURCE_COMMAND_LINE);
m_ti.m_aspect_ratio_given = true;
}
}
if (m_ti.m_aspect_ratio_given && m_ti.m_display_dimensions_given) {
if (m_ti.m_aspect_ratio_is_factor)
mxerror_tid(m_ti.m_fname, m_ti.m_id, boost::format(Y("Both the aspect ratio factor and '--display-dimensions' were given.\n")));
else
mxerror_tid(m_ti.m_fname, m_ti.m_id, boost::format(Y("Both the aspect ratio and '--display-dimensions' were given.\n")));
}
// Let's see if the user has specified a FourCC for this track.
if (mtx::includes(m_ti.m_all_fourccs, m_ti.m_id))
m_ti.m_fourcc = m_ti.m_all_fourccs[m_ti.m_id];
else if (mtx::includes(m_ti.m_all_fourccs, -1))
m_ti.m_fourcc = m_ti.m_all_fourccs[-1];
// Let's see if the user has specified a FourCC for this track.
i = LOOKUP_TRACK_ID(m_ti.m_pixel_crop_list);
if (-2 != i)
set_video_pixel_cropping(m_ti.m_pixel_crop_list[i], OPTION_SOURCE_COMMAND_LINE);
// Let's see if the user has specified a stereo mode for this track.
i = LOOKUP_TRACK_ID(m_ti.m_stereo_mode_list);
if (-2 != i)
set_video_stereo_mode(m_ti.m_stereo_mode_list[m_ti.m_id], OPTION_SOURCE_COMMAND_LINE);
// Let's see if the user has specified a default duration for this track.
if (mtx::includes(m_ti.m_default_durations, m_ti.m_id))
m_htrack_default_duration = m_ti.m_default_durations[m_ti.m_id];
else if (mtx::includes(m_ti.m_default_durations, -1))
m_htrack_default_duration = m_ti.m_default_durations[-1];
else
m_default_duration_forced = false;
// Let's see if the user has set a max_block_add_id
if (mtx::includes(m_ti.m_max_blockadd_ids, m_ti.m_id))
m_htrack_max_add_block_ids = m_ti.m_max_blockadd_ids[m_ti.m_id];
else if (mtx::includes(m_ti.m_max_blockadd_ids, -1))
m_htrack_max_add_block_ids = m_ti.m_max_blockadd_ids[-1];
// Let's see if the user has specified a NALU size length for this track.
if (mtx::includes(m_ti.m_nalu_size_lengths, m_ti.m_id))
m_ti.m_nalu_size_length = m_ti.m_nalu_size_lengths[m_ti.m_id];
else if (mtx::includes(m_ti.m_nalu_size_lengths, -1))
m_ti.m_nalu_size_length = m_ti.m_nalu_size_lengths[-1];
// Let's see if the user has specified a compression scheme for this track.
if (COMPRESSION_UNSPECIFIED != m_ti.m_compression)
m_hcompression = m_ti.m_compression;
// Set default header values to 'unset'.
if (!m_reader->m_appending) {
m_hserialno = create_track_number();
g_packetizers_by_track_num[m_hserialno] = this;
}
m_timestamp_factory = timestamp_factory_c::create(m_ti.m_ext_timecodes, m_ti.m_fname, m_ti.m_id);
// If no external timecode file but a default duration has been
// given then create a simple timecode factory that generates the
// timecodes for the given FPS.
if (!m_timestamp_factory && (-1 != m_htrack_default_duration))
m_timestamp_factory = timestamp_factory_c::create_fps_factory(m_htrack_default_duration, m_ti.m_tcsync);
}
void
avi_reader_c::add_audio_demuxer(int aid) {
for (auto &demuxer : m_audio_demuxers)
if (demuxer.m_aid == aid) // Demuxer already added?
return;
AVI_set_audio_track(m_avi, aid);
if (AVI_read_audio_chunk(m_avi, nullptr) < 0) {
mxwarn(boost::format(Y("Could not find an index for audio track %1% (avilib error message: %2%). Skipping track.\n")) % (aid + 1) % AVI_strerror());
return;
}
avi_demuxer_t demuxer;
generic_packetizer_c *packetizer = nullptr;
alWAVEFORMATEX *wfe = m_avi->wave_format_ex[aid];
uint32_t audio_format = AVI_audio_format(m_avi);
demuxer.m_aid = aid;
demuxer.m_ptzr = -1;
demuxer.m_samples_per_second = AVI_audio_rate(m_avi);
demuxer.m_channels = AVI_audio_channels(m_avi);
demuxer.m_bits_per_sample = AVI_audio_bits(m_avi);
m_ti.m_id = aid + 1; // ID for this audio track.
auto stream_header = &m_avi->stream_headers[aid];
auto dw_scale = static_cast<int64_t>(get_uint32_le(&stream_header->dw_scale));
auto dw_rate = static_cast<int64_t>(get_uint32_le(&stream_header->dw_rate));
auto dw_sample_size = static_cast<int64_t>(get_uint32_le(&stream_header->dw_sample_size));
m_ti.m_avi_audio_data_rate = dw_scale ? dw_rate * dw_sample_size / dw_scale : 0;
if ((0xfffe == audio_format) && (get_uint16_le(&wfe->cb_size) >= (sizeof(alWAVEFORMATEXTENSION)))) {
alWAVEFORMATEXTENSIBLE *ext = reinterpret_cast<alWAVEFORMATEXTENSIBLE *>(wfe);
audio_format = get_uint32_le(&ext->extension.guid.data1);
} else if (get_uint16_le(&wfe->cb_size) > 0)
m_ti.m_private_data = memory_c::clone(wfe + 1, get_uint16_le(&wfe->cb_size));
else
m_ti.m_private_data.reset();
demuxer.m_codec = codec_c::look_up_audio_format(audio_format);
if (demuxer.m_codec.is(codec_c::type_e::A_PCM))
packetizer = new pcm_packetizer_c(this, m_ti, demuxer.m_samples_per_second, demuxer.m_channels, demuxer.m_bits_per_sample, 0x0003 == audio_format ? pcm_packetizer_c::ieee_float : pcm_packetizer_c::little_endian_integer);
else if (demuxer.m_codec.is(codec_c::type_e::A_MP2) || demuxer.m_codec.is(codec_c::type_e::A_MP3))
packetizer = new mp3_packetizer_c(this, m_ti, demuxer.m_samples_per_second, demuxer.m_channels, false);
else if (demuxer.m_codec.is(codec_c::type_e::A_AC3))
packetizer = new ac3_packetizer_c(this, m_ti, demuxer.m_samples_per_second, demuxer.m_channels, 0);
else if (demuxer.m_codec.is(codec_c::type_e::A_DTS))
packetizer = create_dts_packetizer(aid);
else if (demuxer.m_codec.is(codec_c::type_e::A_AAC))
packetizer = create_aac_packetizer(aid, demuxer);
else if (demuxer.m_codec.is(codec_c::type_e::A_VORBIS))
packetizer = create_vorbis_packetizer(aid);
else
mxerror_tid(m_ti.m_fname, aid + 1, boost::format(Y("Unknown/unsupported audio format 0x%|1$04x| for this audio track.\n")) % audio_format);
packetizer->enable_avi_audio_sync(true);
show_packetizer_info(aid + 1, packetizer);
demuxer.m_ptzr = add_packetizer(packetizer);
m_audio_demuxers.push_back(demuxer);
int i, maxchunks = AVI_audio_chunks(m_avi);
for (i = 0; i < maxchunks; i++) {
auto size = AVI_audio_size(m_avi, i);
if (size < AVI_MAX_AUDIO_CHUNK_SIZE)
m_bytes_to_process += size;
}
}