static int close_file( hnd_t handle, int64_t largest_pts, int64_t second_largest_pts )
{
mp4_hnd_t *p_mp4 = handle;
if( !p_mp4 )
return 0;
if( p_mp4->p_root )
{
double actual_duration = 0;
if( p_mp4->i_track )
{
/* Flush the rest of samples and add the last sample_delta. */
uint32_t last_delta = largest_pts - second_largest_pts;
MP4_LOG_IF_ERR( lsmash_flush_pooled_samples( p_mp4->p_root, p_mp4->i_track, (last_delta ? last_delta : 1) * p_mp4->i_time_inc ),
"failed to flush the rest of samples.\n" );
if( p_mp4->i_movie_timescale != 0 && p_mp4->i_video_timescale != 0 ) /* avoid zero division */
actual_duration = ((double)((largest_pts + last_delta) * p_mp4->i_time_inc) / p_mp4->i_video_timescale) * p_mp4->i_movie_timescale;
else
MP4_LOG_ERROR( "timescale is broken.\n" );
/*
* Declare the explicit time-line mapping.
* A segment_duration is given by movie timescale, while a media_time that is the start time of this segment
* is given by not the movie timescale but rather the media timescale.
* The reason is that ISO media have two time-lines, presentation and media time-line,
* and an edit maps the presentation time-line to the media time-line.
* According to QuickTime file format specification and the actual playback in QuickTime Player,
* if the Edit Box doesn't exist in the track, the ratio of the summation of sample durations and track's duration becomes
* the track's media_rate so that the entire media can be used by the track.
* So, we add Edit Box here to avoid this implicit media_rate could distort track's presentation timestamps slightly.
* Note: Any demuxers should follow the Edit List Box if it exists.
*/
lsmash_edit_t edit;
edit.duration = actual_duration;
edit.start_time = p_mp4->i_first_cts;
edit.rate = ISOM_EDIT_MODE_NORMAL;
if( !p_mp4->b_fragments )
{
MP4_LOG_IF_ERR( lsmash_create_explicit_timeline_map( p_mp4->p_root, p_mp4->i_track, edit ),
"failed to set timeline map for video.\n" );
}
else if( !p_mp4->b_stdout )
MP4_LOG_IF_ERR( lsmash_modify_explicit_timeline_map( p_mp4->p_root, p_mp4->i_track, 1, edit ),
"failed to update timeline map for video.\n" );
}
MP4_LOG_IF_ERR( lsmash_finish_movie( p_mp4->p_root, NULL ), "failed to finish movie.\n" );
}
remove_mp4_hnd( p_mp4 ); /* including lsmash_destroy_root( p_mp4->p_root ); */
return 0;
}
static int write_frame( hnd_t handle, uint8_t *p_nalu, int i_size, x264_picture_t *p_picture )
{
mp4_hnd_t *p_mp4 = handle;
uint64_t dts, cts;
if( !p_mp4->i_numframe )
{
p_mp4->i_start_offset = p_picture->i_dts * -1;
p_mp4->i_first_cts = p_mp4->b_dts_compress ? 0 : p_mp4->i_start_offset * p_mp4->i_time_inc;
if( p_mp4->b_fragments )
{
lsmash_edit_t edit;
edit.duration = ISOM_EDIT_DURATION_UNKNOWN32; /* QuickTime doesn't support 64bit duration. */
edit.start_time = p_mp4->i_first_cts;
edit.rate = ISOM_EDIT_MODE_NORMAL;
MP4_LOG_IF_ERR( lsmash_create_explicit_timeline_map( p_mp4->p_root, p_mp4->i_track, edit ),
"failed to set timeline map for video.\n" );
}
}
lsmash_sample_t *p_sample = lsmash_create_sample( i_size + p_mp4->i_sei_size );
MP4_FAIL_IF_ERR( !p_sample,
"failed to create a video sample data.\n" );
if( p_mp4->p_sei_buffer )
{
memcpy( p_sample->data, p_mp4->p_sei_buffer, p_mp4->i_sei_size );
free( p_mp4->p_sei_buffer );
p_mp4->p_sei_buffer = NULL;
}
memcpy( p_sample->data + p_mp4->i_sei_size, p_nalu, i_size );
p_mp4->i_sei_size = 0;
if( p_mp4->b_dts_compress )
{
if( p_mp4->i_numframe == 1 )
p_mp4->i_init_delta = (p_picture->i_dts + p_mp4->i_start_offset) * p_mp4->i_time_inc;
dts = p_mp4->i_numframe > p_mp4->i_delay_frames
? p_picture->i_dts * p_mp4->i_time_inc
: p_mp4->i_numframe * (p_mp4->i_init_delta / p_mp4->i_dts_compress_multiplier);
cts = p_picture->i_pts * p_mp4->i_time_inc;
}
else
{
dts = (p_picture->i_dts + p_mp4->i_start_offset) * p_mp4->i_time_inc;
cts = (p_picture->i_pts + p_mp4->i_start_offset) * p_mp4->i_time_inc;
}
p_sample->dts = dts;
p_sample->cts = cts;
p_sample->index = p_mp4->i_sample_entry;
p_sample->prop.ra_flags = p_picture->b_keyframe ? ISOM_SAMPLE_RANDOM_ACCESS_FLAG_SYNC : ISOM_SAMPLE_RANDOM_ACCESS_FLAG_NONE;
if( p_mp4->b_fragments && p_mp4->i_numframe && p_sample->prop.ra_flags != ISOM_SAMPLE_RANDOM_ACCESS_FLAG_NONE )
{
MP4_FAIL_IF_ERR( lsmash_flush_pooled_samples( p_mp4->p_root, p_mp4->i_track, p_sample->dts - p_mp4->i_prev_dts ),
"failed to flush the rest of samples.\n" );
MP4_FAIL_IF_ERR( lsmash_create_fragment_movie( p_mp4->p_root ),
"failed to create a movie fragment.\n" );
}
/* Append data per sample. */
MP4_FAIL_IF_ERR( lsmash_append_sample( p_mp4->p_root, p_mp4->i_track, p_sample ),
"failed to append a video frame.\n" );
p_mp4->i_prev_dts = dts;
p_mp4->i_numframe++;
return i_size;
}
int lsmash_create_reference_chapter_track( lsmash_root_t *root, uint32_t track_ID, char *file_name )
{
if( isom_check_initializer_present( root ) < 0 )
goto error_message;
lsmash_file_t *file = root->file;
if( !file
|| !file->moov
|| !file->moov->mvhd )
goto error_message;
if( file->forbid_tref || (!file->qt_compatible && !file->itunes_movie) )
{
lsmash_log( NULL, LSMASH_LOG_ERROR, "reference chapter is not available for this file.\n" );
goto error_message;
}
FILE *chapter = NULL; /* shut up 'uninitialized' warning */
/* Create a Track Reference Box. */
isom_trak_t *trak = isom_get_trak( file, track_ID );
if( !trak )
{
lsmash_log( NULL, LSMASH_LOG_ERROR, "the specified track ID to apply the chapter doesn't exist.\n" );
goto error_message;
}
if( !trak->tref && !isom_add_tref( trak ) )
goto error_message;
/* Create a track_ID for a new chapter track. */
uint32_t *id = (uint32_t *)lsmash_malloc( sizeof(uint32_t) );
if( !id )
goto error_message;
uint32_t chapter_track_ID = *id = file->moov->mvhd->next_track_ID;
/* Create a Track Reference Type Box. */
isom_tref_type_t *chap = isom_add_track_reference_type( trak->tref, QT_TREF_TYPE_CHAP );
if( !chap )
{
lsmash_free( id );
goto error_message;
}
chap->ref_count = 1;
chap->track_ID = id;
/* Create a reference chapter track. */
if( chapter_track_ID != lsmash_create_track( root, ISOM_MEDIA_HANDLER_TYPE_TEXT_TRACK ) )
goto error_message;
/* Set track parameters. */
lsmash_track_parameters_t track_param;
lsmash_initialize_track_parameters( &track_param );
track_param.mode = ISOM_TRACK_IN_MOVIE | ISOM_TRACK_IN_PREVIEW;
if( lsmash_set_track_parameters( root, chapter_track_ID, &track_param ) < 0 )
goto fail;
/* Set media parameters. */
uint64_t media_timescale = lsmash_get_media_timescale( root, track_ID );
if( !media_timescale )
goto fail;
lsmash_media_parameters_t media_param;
lsmash_initialize_media_parameters( &media_param );
media_param.timescale = media_timescale;
media_param.ISO_language = file->max_3gpp_version >= 6 || file->itunes_movie ? ISOM_LANGUAGE_CODE_UNDEFINED : 0;
media_param.MAC_language = 0;
if( lsmash_set_media_parameters( root, chapter_track_ID, &media_param ) < 0 )
goto fail;
/* Create a sample description. */
lsmash_codec_type_t sample_type = file->max_3gpp_version >= 6 || file->itunes_movie
? ISOM_CODEC_TYPE_TX3G_TEXT
: QT_CODEC_TYPE_TEXT_TEXT;
lsmash_summary_t summary = { .sample_type = sample_type, .data_ref_index = 1 };
uint32_t sample_entry = lsmash_add_sample_entry( root, chapter_track_ID, &summary );
if( !sample_entry )
goto fail;
/* Check each line format. */
fn_get_chapter_data fnc = isom_check_chap_line( file_name );
if( !fnc )
goto fail;
/* Open chapter format file. */
chapter = lsmash_fopen( file_name, "rb" );
if( !chapter )
{
lsmash_log( NULL, LSMASH_LOG_ERROR, "failed to open the chapter file \"%s\".\n", file_name );
goto fail;
}
/* Parse the file and write text samples. */
isom_chapter_entry_t data;
while( !fnc( chapter, &data ) )
{
/* set start_time */
data.start_time = data.start_time * 1e-9 * media_timescale + 0.5;
/* write a text sample here */
int is_qt_text = lsmash_check_codec_type_identical( sample_type, QT_CODEC_TYPE_TEXT_TEXT );
uint16_t name_length = strlen( data.chapter_name );
lsmash_sample_t *sample = lsmash_create_sample( 2 + name_length + 12 * is_qt_text );
if( !sample )
{
lsmash_free( data.chapter_name );
goto fail;
}
sample->data[0] = (name_length >> 8) & 0xff;
sample->data[1] = name_length & 0xff;
memcpy( sample->data + 2, data.chapter_name, name_length );
if( is_qt_text )
{
/* QuickTime Player requires Text Encoding Attribute Box ('encd') if media language is ISO language codes : undefined.
* Also this box can avoid garbling if the QuickTime text sample is encoded by Unicode characters.
* Note: 3GPP Timed Text supports only UTF-8 or UTF-16, so this box isn't needed. */
static const uint8_t encd[12] =
{
0x00, 0x00, 0x00, 0x0C, /* size: 12 */
0x65, 0x6E, 0x63, 0x64, /* type: 'encd' */
0x00, 0x00, 0x01, 0x00 /* Unicode Encoding */
};
memcpy( sample->data + 2 + name_length, encd, 12 );
}
sample->dts = data.start_time;
sample->cts = data.start_time;
sample->prop.ra_flags = ISOM_SAMPLE_RANDOM_ACCESS_FLAG_SYNC;
sample->index = sample_entry;
if( lsmash_append_sample( root, chapter_track_ID, sample ) < 0 )
{
lsmash_free( data.chapter_name );
goto fail;
}
lsmash_freep( &data.chapter_name );
}
if( lsmash_flush_pooled_samples( root, chapter_track_ID, 0 ) < 0 )
goto fail;
isom_trak_t *chapter_trak = isom_get_trak( file, chapter_track_ID );
if( !chapter_trak )
goto fail;
fclose( chapter );
chapter_trak->is_chapter = 1;
chapter_trak->related_track_ID = track_ID;
return 0;
fail:
if( chapter )
fclose( chapter );
/* Remove chapter track reference. */
if( trak->tref->ref_list.tail )
isom_remove_box_by_itself( trak->tref->ref_list.tail->data );
if( trak->tref->ref_list.entry_count == 0 )
isom_remove_box_by_itself( trak->tref );
/* Remove the reference chapter track attached at tail of the list. */
if( file->moov->trak_list.tail )
isom_remove_box_by_itself( file->moov->trak_list.tail->data );
error_message:
lsmash_log( NULL, LSMASH_LOG_ERROR, "failed to set reference chapter.\n" );
return LSMASH_ERR_NAMELESS;
}
uint32_t lsmash_count_tyrant_chapter( lsmash_root_t *root )
{
if( isom_check_initializer_present( root ) < 0
&& root->file->initializer->moov
&& root->file->initializer->moov->udta
&& root->file->initializer->moov->udta->chpl
&& root->file->initializer->moov->udta->chpl->list )
return root->file->initializer->moov->udta->chpl->list->entry_count;
return 0;
}
char *lsmash_get_tyrant_chapter( lsmash_root_t *root, uint32_t index, double *timestamp )
{
if( isom_check_initializer_present( root ) < 0 )
return NULL;
lsmash_file_t *file = root->file->initializer;
if( !file->moov
|| !file->moov->mvhd
|| !file->moov->udta
|| !file->moov->udta->chpl )
return NULL;
isom_chpl_t *chpl = file->moov->udta->chpl;
isom_chpl_entry_t *data = (isom_chpl_entry_t *)lsmash_get_entry_data( chpl->list, index );
if( !data )
return NULL;
double timescale = chpl->version ? 10000000.0 : file->moov->mvhd->timescale;
*timestamp = data->start_time / timescale;
if( !memcmp( data->chapter_name, UTF8_BOM, UTF8_BOM_LENGTH ) )
return data->chapter_name + UTF8_BOM_LENGTH;
return data->chapter_name;
}
int lsmash_print_chapter_list( lsmash_root_t *root )
{
if( isom_check_initializer_present( root ) < 0
|| !(root->file->initializer->flags & LSMASH_FILE_MODE_READ) )
return LSMASH_ERR_FUNCTION_PARAM;
lsmash_file_t *file = root->file->initializer;
if( file->moov
&& file->moov->udta
&& file->moov->udta->chpl )
{
isom_chpl_t *chpl = file->moov->udta->chpl;
uint32_t timescale;
if( !chpl->version )
{
if( !file->moov
&& !file->moov->mvhd )
return LSMASH_ERR_NAMELESS;
timescale = file->moov->mvhd->timescale;
}
else
timescale = 10000000;
uint32_t i = 1;
for( lsmash_entry_t *entry = chpl->list->head; entry; entry = entry->next )
{
isom_chpl_entry_t *data = (isom_chpl_entry_t *)entry->data;
int64_t start_time = data->start_time / timescale;
int hh = start_time / 3600;
int mm = (start_time / 60) % 60;
int ss = start_time % 60;
int ms = ((data->start_time / (double)timescale) - hh * 3600 - mm * 60 - ss) * 1e3 + 0.5;
if( !memcmp( data->chapter_name, UTF8_BOM, UTF8_BOM_LENGTH ) ) /* detect BOM */
{
data->chapter_name += UTF8_BOM_LENGTH;
#ifdef _WIN32
if( i == 1 )
printf( UTF8_BOM ); /* add BOM on Windows */
#endif
}
printf( "CHAPTER%02"PRIu32"=%02d:%02d:%02d.%03d\n", i, hh, mm, ss, ms );
printf( "CHAPTER%02"PRIu32"NAME=%s\n", i++, data->chapter_name );
}
return 0;
}
lsmash_log( NULL, LSMASH_LOG_ERROR, "this file doesn't have a chapter list.\n" );
return LSMASH_ERR_NAMELESS;
}
bool fcMP4Muxer::mux(const Params ¶ms)
{
lsmash_root_t *root;
lsmash_file_parameters_t mp4_stream;
lsmash_file_parameters_t h264_stream;
lsmash_brand_type major_brand = ISOM_BRAND_TYPE_MP42;
lsmash_brand_type compatible_brands[2] = { ISOM_BRAND_TYPE_MP42, ISOM_BRAND_TYPE_ISOM };
uint32_t fps_num = params.frame_rate;
uint32_t fps_den = 1;
// 出力 mp4
root = lsmash_create_root();
if (lsmash_open_file(params.out_mp4_path, 0, &mp4_stream) != 0) {
return false;
}
mp4_stream.major_brand = major_brand;
mp4_stream.brands = compatible_brands;
mp4_stream.brand_count = sizeof(compatible_brands) / sizeof(compatible_brands[0]);
mp4_stream.minor_version = 0;
lsmash_set_file(root, &mp4_stream);
lsmash_movie_parameters_t movie_param;
lsmash_initialize_movie_parameters(&movie_param);
lsmash_set_movie_parameters(root, &movie_param);
int track_number = 1;
MP4TrackData track_data[2];
int num_track_data = 0;
if (params.in_h264_path) {
importer_t *h264_importer = lsmash_importer_open(params.in_h264_path, "H.264");
if (h264_importer == nullptr) { return false; }
int h264_track_id = lsmash_create_track(root, ISOM_MEDIA_HANDLER_TYPE_VIDEO_TRACK);
lsmash_track_parameters_t track_param;
lsmash_initialize_track_parameters(&track_param);
(int&)track_param.mode = ISOM_TRACK_IN_MOVIE | ISOM_TRACK_IN_PREVIEW;
int sample_entry = 0;
lsmash_summary_t *summary = lsmash_duplicate_summary(h264_importer, track_number);
auto video_summary = (lsmash_video_summary_t*)summary;
track_param.display_width = video_summary->width << 16;
track_param.display_height = video_summary->height << 16;
lsmash_set_track_parameters(root, h264_track_id, &track_param);
sample_entry = lsmash_add_sample_entry(root, h264_track_id, summary);
auto& td = track_data[num_track_data++];
td.importer = h264_importer;
td.summary = summary;
td.sample_entry = sample_entry;
td.track_number = track_number;
td.track_id = h264_track_id;
td.timescale = video_summary->timescale;
td.timebase = video_summary->timebase;
lsmash_media_parameters_t media_param;
lsmash_initialize_media_parameters(&media_param);
media_param.timescale = td.timescale;
lsmash_set_media_parameters(root, h264_track_id, &media_param);
}
if (params.in_aac_path) {
importer_t *aac_importer = lsmash_importer_open(params.in_aac_path, "adts");
if (aac_importer == nullptr) { return false; }
int aac_track_id = lsmash_create_track(root, ISOM_MEDIA_HANDLER_TYPE_AUDIO_TRACK);
lsmash_track_parameters_t track_param;
lsmash_initialize_track_parameters(&track_param);
(int&)track_param.mode = ISOM_TRACK_IN_MOVIE | ISOM_TRACK_IN_PREVIEW;
int sample_entry = 0;
lsmash_summary_t *summary = lsmash_duplicate_summary(aac_importer, track_number);
auto audio_summary = (lsmash_audio_summary_t*)summary;
lsmash_set_track_parameters(root, aac_track_id, &track_param);
sample_entry = lsmash_add_sample_entry(root, aac_track_id, summary);
auto& td = track_data[num_track_data++];
td.importer = aac_importer;
td.summary = summary;
td.sample_entry = sample_entry;
td.track_number = track_number;
td.track_id = aac_track_id;
td.timescale = audio_summary->frequency;
td.timebase = 1;
lsmash_media_parameters_t media_param;
lsmash_initialize_media_parameters(&media_param);
media_param.timescale = td.timescale;
lsmash_set_media_parameters(root, aac_track_id, &media_param);
}
double largest_dts = 0.0;
uint32_t num_consecutive_sample_skip = 0;
for (int ti = 0;;) {
auto &td = track_data[ti];
if (!td.sample) {
int ret = lsmash_importer_get_access_unit(td.importer, td.track_number, &td.sample);
if (ret <= -1) // error
{
lsmash_delete_sample(td.sample);
break;
}
else if (ret == 1) /* a change of stream's properties */
{
lsmash_cleanup_summary(td.summary);
td.summary = lsmash_duplicate_summary(td.importer, td.track_number);
td.sample_entry = lsmash_add_sample_entry(root, td.track_id, td.summary);
if (!td.sample_entry) { break; }
}
else if (ret == 2) /* EOF */
{
lsmash_delete_sample(td.sample);
break;
}
if (td.sample)
{
td.sample->index = td.sample_entry;
td.sample->dts *= td.timebase;
td.sample->cts *= td.timebase;
td.dts = (double)td.sample->dts / td.timescale;
}
}
if (td.sample) {
if (td.dts <= largest_dts || num_consecutive_sample_skip == num_track_data)
{
uint64_t sample_size = td.sample->length;
uint64_t sample_dts = td.sample->dts;
uint64_t sample_cts = td.sample->cts;
if (lsmash_append_sample(root, td.track_id, td.sample)) {
return false;
}
td.prev_dts = sample_dts;
td.sample = nullptr;
largest_dts = std::max<double>(largest_dts, td.dts);
num_consecutive_sample_skip = 0;
}
else {
// skip
++num_consecutive_sample_skip;
}
}
ti = (ti + 1) % num_track_data;
}
for (int i = 0; i < num_track_data; ++i) {
lsmash_flush_pooled_samples(root, track_data[i].track_id, fps_den);
lsmash_cleanup_summary(track_data[i].summary);
lsmash_importer_close(track_data[i].importer);
}
lsmash_finish_movie(root, nullptr);
lsmash_close_file(&mp4_stream);
lsmash_destroy_root(root);
return true;
}
int lsmash_create_reference_chapter_track( lsmash_root_t *root, uint32_t track_ID, char *file_name )
{
if( !root || !root->moov || !root->moov->mvhd || !root->moov->trak_list )
goto error_message;
if( !root->qt_compatible && !root->itunes_movie )
{
lsmash_log( LSMASH_LOG_ERROR, "reference chapter is not available for this file.\n" );
goto error_message;
}
FILE *chapter = NULL; /* shut up 'uninitialized' warning */
/* Create a Track Reference Box. */
isom_trak_entry_t *trak = isom_get_trak( root, track_ID );
if( !trak )
{
lsmash_log( LSMASH_LOG_ERROR, "the specified track ID to apply the chapter doesn't exist.\n" );
goto error_message;
}
if( isom_add_tref( trak ) )
goto error_message;
/* Create a track_ID for a new chapter track. */
uint32_t *id = (uint32_t *)malloc( sizeof(uint32_t) );
if( !id )
goto error_message;
uint32_t chapter_track_ID = *id = root->moov->mvhd->next_track_ID;
/* Create a Track Reference Type Box. */
isom_tref_type_t *chap = isom_add_track_reference_type( trak->tref, QT_TREF_TYPE_CHAP, 1, id );
if( !chap )
goto error_message; /* no need to free id */
/* Create a reference chapter track. */
if( chapter_track_ID != lsmash_create_track( root, ISOM_MEDIA_HANDLER_TYPE_TEXT_TRACK ) )
goto error_message;
/* Set track parameters. */
lsmash_track_parameters_t track_param;
lsmash_initialize_track_parameters( &track_param );
track_param.mode = ISOM_TRACK_IN_MOVIE | ISOM_TRACK_IN_PREVIEW;
if( lsmash_set_track_parameters( root, chapter_track_ID, &track_param ) )
goto fail;
/* Set media parameters. */
uint64_t media_timescale = lsmash_get_media_timescale( root, track_ID );
if( !media_timescale )
goto fail;
lsmash_media_parameters_t media_param;
lsmash_initialize_media_parameters( &media_param );
media_param.timescale = media_timescale;
media_param.ISO_language = root->max_3gpp_version >= 6 || root->itunes_movie ? ISOM_LANGUAGE_CODE_UNDEFINED : 0;
media_param.MAC_language = 0;
if( lsmash_set_media_parameters( root, chapter_track_ID, &media_param ) )
goto fail;
/* Create a sample description. */
lsmash_codec_type_t sample_type = root->max_3gpp_version >= 6 || root->itunes_movie
? ISOM_CODEC_TYPE_TX3G_TEXT
: QT_CODEC_TYPE_TEXT_TEXT;
lsmash_summary_t summary = { .sample_type = sample_type };
uint32_t sample_entry = lsmash_add_sample_entry( root, chapter_track_ID, &summary );
if( !sample_entry )
goto fail;
/* Check each line format. */
fn_get_chapter_data fnc = isom_check_chap_line( file_name );
if( !fnc )
goto fail;
/* Open chapter format file. */
chapter = fopen( file_name, "rb" );
if( !chapter )
{
lsmash_log( LSMASH_LOG_ERROR, "failed to open the chapter file \"%s\".\n", file_name );
goto fail;
}
/* Parse the file and write text samples. */
isom_chapter_entry_t data;
while( !fnc( chapter, &data ) )
{
/* set start_time */
data.start_time = data.start_time * 1e-9 * media_timescale + 0.5;
/* write a text sample here */
int is_qt_text = lsmash_check_codec_type_identical( sample_type, QT_CODEC_TYPE_TEXT_TEXT );
uint16_t name_length = strlen( data.chapter_name );
lsmash_sample_t *sample = lsmash_create_sample( 2 + name_length + 12 * is_qt_text );
if( !sample )
{
free( data.chapter_name );
goto fail;
}
sample->data[0] = (name_length >> 8) & 0xff;
sample->data[1] = name_length & 0xff;
memcpy( sample->data + 2, data.chapter_name, name_length );
if( is_qt_text )
{
/* QuickTime Player requires Text Encoding Attribute Box ('encd') if media language is ISO language codes : undefined.
* Also this box can avoid garbling if the QuickTime text sample is encoded by Unicode characters.
* Note: 3GPP Timed Text supports only UTF-8 or UTF-16, so this box isn't needed. */
static const uint8_t encd[12] =
{
0x00, 0x00, 0x00, 0x0C, /* size: 12 */
0x65, 0x6E, 0x63, 0x64, /* type: 'encd' */
0x00, 0x00, 0x01, 0x00 /* Unicode Encoding */
};
memcpy( sample->data + 2 + name_length, encd, 12 );
}
sample->dts = sample->cts = data.start_time;
sample->prop.ra_flags = ISOM_SAMPLE_RANDOM_ACCESS_FLAG_SYNC;
sample->index = sample_entry;
if( lsmash_append_sample( root, chapter_track_ID, sample ) )
{
free( data.chapter_name );
goto fail;
}
free( data.chapter_name );
data.chapter_name = NULL;
}
if( lsmash_flush_pooled_samples( root, chapter_track_ID, 0 ) )
goto fail;
isom_trak_entry_t *chapter_trak = isom_get_trak( root, chapter_track_ID );
if( !chapter_trak )
goto fail;
fclose( chapter );
chapter_trak->is_chapter = 1;
chapter_trak->related_track_ID = track_ID;
return 0;
fail:
if( chapter )
fclose( chapter );
/* Remove chapter track reference. */
lsmash_remove_entry_direct( trak->tref->ref_list, trak->tref->ref_list->tail, isom_remove_track_reference_type );
if( trak->tref->ref_list->entry_count == 0 )
isom_remove_tref( trak->tref );
/* Remove the reference chapter track attached at tail of the list. */
lsmash_remove_entry_direct( root->moov->trak_list, root->moov->trak_list->tail, isom_remove_trak );
error_message:
lsmash_log( LSMASH_LOG_ERROR, "failed to set reference chapter.\n" );
return -1;
}
