void
mpeg4_p2_video_packetizer_c::extract_aspect_ratio(const unsigned char *buffer,
int size) {
if (m_aspect_ratio_extracted)
return;
if ((0 != m_connected_to) || display_dimensions_or_aspect_ratio_set()) {
m_aspect_ratio_extracted = true;
return;
}
uint32_t num, den;
if (mpeg4::p2::extract_par(buffer, size, num, den)) {
m_aspect_ratio_extracted = true;
set_video_aspect_ratio((double)m_hvideo_pixel_width / (double)m_hvideo_pixel_height * (double)num / (double)den, false, OPTION_SOURCE_BITSTREAM);
generic_packetizer_c::set_headers();
rerender_track_headers();
mxinfo_tid(m_ti.m_fname, m_ti.m_id,
boost::format(Y("Extracted the aspect ratio information from the MPEG4 layer 2 video data and set the display dimensions to %1%/%2%.\n"))
% m_hvideo_display_width % m_hvideo_display_height);
} else if (50 <= m_frames_output)
m_aspect_ratio_extracted = true;
}
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);
}
