static u_char*
dash_packager_write_segment_list(
u_char* p,
write_period_context_t* context,
uint32_t start_number,
u_char* clip_spec,
media_sequence_t* cur_sequence,
media_track_t* cur_track,
uint32_t segment_count)
{
dash_manifest_config_t* conf = context->conf;
media_set_t* media_set = context->media_set;
vod_str_t track_spec;
vod_str_t cur_base_url;
u_char track_spec_buffer[MAX_TRACK_SPEC_LENGTH];
uint32_t sequence_index = cur_sequence->index;
uint32_t i;
track_spec.data = track_spec_buffer;
// build the base url
dash_packager_get_segment_list_base_url(context, cur_track, &cur_base_url, &sequence_index);
// get the track specification
dash_packager_get_track_spec(
&track_spec,
media_set,
sequence_index,
cur_track->index,
cur_track->media_info.media_type);
// write the header
p = vod_sprintf(p,
VOD_DASH_MANIFEST_SEGMENT_LIST_HEADER,
media_set->segmenter_conf->segment_duration,
context->clip_index == 0 ? media_set->initial_segment_clip_relative_index + 1 : 1,
&cur_base_url,
&conf->init_file_name_prefix,
clip_spec,
&track_spec,
&dash_codecs[cur_track->media_info.codec_id].init_file_ext);
// write the urls
for (i = 0; i < segment_count; i++)
{
p = vod_sprintf(p,
VOD_DASH_MANIFEST_SEGMENT_URL,
&cur_base_url,
&conf->fragment_file_name_prefix,
start_number + i + 1,
&track_spec,
&dash_codecs[cur_track->media_info.codec_id].frag_file_ext);
}
p = vod_copy(p, VOD_DASH_MANIFEST_SEGMENT_LIST_FOOTER, sizeof(VOD_DASH_MANIFEST_SEGMENT_LIST_FOOTER) - 1);
return p;
}
static u_char*
dash_packager_write_mpd_period(
u_char* p,
u_char* base_url_temp_buffer,
segment_durations_t* segment_durations,
segment_duration_item_t** cur_duration_items,
uint32_t clip_index,
dash_manifest_config_t* conf,
vod_str_t* base_url,
segmenter_conf_t* segmenter_conf,
media_set_t* media_set,
write_tags_callback_t write_representation_tags,
void* representation_tags_writer_context)
{
media_clip_filtered_t* cur_clip;
media_sequence_t* cur_sequence;
media_track_t* last_track;
media_track_t* cur_track;
vod_str_t representation_id;
u_char representation_id_buffer[MAX_TRACK_SPEC_LENGTH];
uint32_t filtered_clip_index;
uint32_t max_width = 0;
uint32_t max_height = 0;
uint32_t max_framerate_duration = 0;
uint32_t max_framerate_timescale = 0;
uint32_t segment_count = 0;
representation_id.data = representation_id_buffer;
if (media_set->use_discontinuity)
{
p = vod_sprintf(p,
VOD_DASH_MANIFEST_PERIOD_DURATION_HEADER,
clip_index,
media_set->durations[clip_index] / 1000,
media_set->durations[clip_index] % 1000);
}
else
{
p = vod_copy(p, VOD_DASH_MANIFEST_PERIOD_HEADER, sizeof(VOD_DASH_MANIFEST_PERIOD_HEADER) - 1);
}
// Note: clip_index can be greater than clip count when consistentSequenceMediaInfo is true
filtered_clip_index = clip_index < media_set->clip_count ? clip_index : 0;
// video adaptation set
if (media_set->track_count[MEDIA_TYPE_VIDEO] != 0)
{
// get the max width, height and frame rate
cur_track = media_set->filtered_tracks + filtered_clip_index * media_set->total_track_count;
last_track = cur_track + media_set->total_track_count;
for (; cur_track < last_track; cur_track++)
{
if (cur_track->media_info.media_type != MEDIA_TYPE_VIDEO)
{
continue;
}
if (cur_track->media_info.u.video.width > max_width)
{
max_width = cur_track->media_info.u.video.width;
}
if (cur_track->media_info.u.video.height > max_height)
{
max_height = cur_track->media_info.u.video.height;
}
if (max_framerate_duration == 0 ||
cur_track->media_info.timescale * max_framerate_duration >
max_framerate_timescale * cur_track->media_info.min_frame_duration)
{
max_framerate_duration = cur_track->media_info.min_frame_duration;
max_framerate_timescale = cur_track->media_info.timescale;
}
}
// print the header
p = vod_sprintf(p,
VOD_DASH_MANIFEST_VIDEO_HEADER,
max_width,
max_height,
(uint32_t)max_framerate_timescale / max_framerate_duration,
(uint32_t)(((uint64_t)max_framerate_timescale * 1000) / max_framerate_duration % 1000));
// print the segment template
switch (conf->manifest_format)
{
case FORMAT_SEGMENT_TEMPLATE:
p = dash_packager_write_segment_template(
p,
conf,
segmenter_conf,
base_url);
break;
case FORMAT_SEGMENT_TIMELINE:
p = dash_packager_write_segment_timeline(
p,
conf,
&segment_durations[MEDIA_TYPE_VIDEO],
&cur_duration_items[MEDIA_TYPE_VIDEO],
base_url);
break;
case FORMAT_SEGMENT_LIST:
if (media_set->use_discontinuity)
{
segment_count = dash_packager_get_cur_clip_segment_count(
&segment_durations[MEDIA_TYPE_VIDEO],
&cur_duration_items[MEDIA_TYPE_VIDEO]);
}
else
{
segment_count = segment_durations[MEDIA_TYPE_VIDEO].segment_count;
}
break;
}
// print the representations
for (cur_sequence = media_set->sequences; cur_sequence < media_set->sequences_end; cur_sequence++)
{
cur_clip = &cur_sequence->filtered_clips[filtered_clip_index];
last_track = cur_clip->last_track;
for (cur_track = cur_clip->first_track; cur_track < last_track; cur_track++)
{
if (cur_track->media_info.media_type != MEDIA_TYPE_VIDEO)
{
continue;
}
dash_packager_get_track_spec(
&representation_id, media_set, clip_index, cur_sequence->index, cur_track->index, 'v');
p = vod_sprintf(p,
VOD_DASH_MANIFEST_VIDEO_PREFIX,
&representation_id,
&cur_track->media_info.codec_name,
(uint32_t)cur_track->media_info.u.video.width,
(uint32_t)cur_track->media_info.u.video.height,
(uint32_t)(cur_track->media_info.timescale / cur_track->media_info.min_frame_duration),
(uint32_t)(((uint64_t)cur_track->media_info.timescale * 1000) / cur_track->media_info.min_frame_duration % 1000),
cur_track->media_info.bitrate
);
if (conf->manifest_format == FORMAT_SEGMENT_LIST)
{
p = dash_packager_write_segment_list(
p,
conf,
media_set,
segmenter_conf,
base_url,
base_url_temp_buffer,
clip_index,
cur_sequence,
cur_track,
segment_count);
}
// write any additional tags
if (write_representation_tags != NULL)
{
p = write_representation_tags(representation_tags_writer_context, p, cur_track);
}
p = vod_copy(p, VOD_DASH_MANIFEST_VIDEO_SUFFIX, sizeof(VOD_DASH_MANIFEST_VIDEO_SUFFIX) - 1);
}
}
// print the footer
p = vod_copy(p, VOD_DASH_MANIFEST_VIDEO_FOOTER, sizeof(VOD_DASH_MANIFEST_VIDEO_FOOTER) - 1);
}
// audio adaptation set
if (media_set->track_count[MEDIA_TYPE_AUDIO] != 0)
{
// print the header
p = vod_copy(p, VOD_DASH_MANIFEST_AUDIO_HEADER, sizeof(VOD_DASH_MANIFEST_AUDIO_HEADER) - 1);
// print the segment template
switch (conf->manifest_format)
{
case FORMAT_SEGMENT_TEMPLATE:
p = dash_packager_write_segment_template(
p,
conf,
segmenter_conf,
base_url);
break;
case FORMAT_SEGMENT_TIMELINE:
p = dash_packager_write_segment_timeline(
p,
conf,
&segment_durations[MEDIA_TYPE_AUDIO],
&cur_duration_items[MEDIA_TYPE_AUDIO],
base_url);
break;
case FORMAT_SEGMENT_LIST:
if (media_set->use_discontinuity)
{
segment_count = dash_packager_get_cur_clip_segment_count(
&segment_durations[MEDIA_TYPE_AUDIO],
&cur_duration_items[MEDIA_TYPE_AUDIO]);
}
else
{
segment_count = segment_durations[MEDIA_TYPE_AUDIO].segment_count;
}
break;
}
// print the representations
for (cur_sequence = media_set->sequences; cur_sequence < media_set->sequences_end; cur_sequence++)
{
cur_clip = &cur_sequence->filtered_clips[filtered_clip_index];
last_track = cur_clip->last_track;
for (cur_track = cur_clip->first_track; cur_track < last_track; cur_track++)
{
if (cur_track->media_info.media_type != MEDIA_TYPE_AUDIO)
{
continue;
}
dash_packager_get_track_spec(
&representation_id, media_set, clip_index, cur_sequence->index, cur_track->index, 'a');
p = vod_sprintf(p,
VOD_DASH_MANIFEST_AUDIO_PREFIX,
&representation_id,
&cur_track->media_info.codec_name,
cur_track->media_info.u.audio.sample_rate,
cur_track->media_info.bitrate);
if (conf->manifest_format == FORMAT_SEGMENT_LIST)
{
p = dash_packager_write_segment_list(
p,
conf,
media_set,
segmenter_conf,
base_url,
base_url_temp_buffer,
clip_index,
cur_sequence,
cur_track,
segment_count);
}
// write any additional tags
if (write_representation_tags != NULL)
{
p = write_representation_tags(representation_tags_writer_context, p, cur_track);
}
p = vod_copy(p, VOD_DASH_MANIFEST_AUDIO_SUFFIX, sizeof(VOD_DASH_MANIFEST_AUDIO_SUFFIX) - 1);
}
}
// print the footer
p = vod_copy(p, VOD_DASH_MANIFEST_AUDIO_FOOTER, sizeof(VOD_DASH_MANIFEST_AUDIO_FOOTER) - 1);
}
p = vod_copy(p, VOD_DASH_MANIFEST_PERIOD_FOOTER, sizeof(VOD_DASH_MANIFEST_PERIOD_FOOTER) - 1);
return p;
}
static u_char*
dash_packager_write_segment_list(
u_char* p,
dash_manifest_config_t* conf,
media_set_t* media_set,
segmenter_conf_t* segmenter_conf,
vod_str_t* base_url,
u_char* base_url_temp_buffer,
uint32_t clip_index,
media_sequence_t* cur_sequence,
media_track_t* cur_track,
uint32_t segment_count)
{
int media_type_char = cur_track->media_info.media_type == MEDIA_TYPE_VIDEO ? 'v' : 'a';
vod_str_t track_spec;
vod_str_t cur_base_url;
u_char track_spec_buffer[MAX_TRACK_SPEC_LENGTH];
uint32_t sequence_index = cur_sequence->index;
uint32_t i;
track_spec.data = track_spec_buffer;
// build the base url
if (base_url->len != 0)
{
cur_base_url.data = base_url_temp_buffer;
base_url_temp_buffer = vod_copy(base_url_temp_buffer, base_url->data, base_url->len);
if (cur_track->file_info.uri.len != 0)
{
base_url_temp_buffer = vod_copy(base_url_temp_buffer, cur_track->file_info.uri.data, cur_track->file_info.uri.len);
sequence_index = INVALID_SEQUENCE_INDEX; // no need to pass the sequence index since we have a direct uri
}
else
{
base_url_temp_buffer = vod_copy(base_url_temp_buffer, media_set->uri.data, media_set->uri.len);
}
*base_url_temp_buffer++ = '/';
cur_base_url.len = base_url_temp_buffer - cur_base_url.data;
}
else
{
cur_base_url.data = NULL;
cur_base_url.len = 0;
}
// get the track specification
dash_packager_get_track_spec(
&track_spec,
media_set,
clip_index,
sequence_index,
cur_track->index,
media_type_char);
// write the header
p = vod_sprintf(p,
VOD_DASH_MANIFEST_SEGMENT_LIST_HEADER,
segmenter_conf->segment_duration,
&cur_base_url,
&conf->init_file_name_prefix,
&track_spec);
// write the urls
for (i = 0; i < segment_count; i++)
{
p = vod_sprintf(p,
VOD_DASH_MANIFEST_SEGMENT_URL,
&cur_base_url,
&conf->fragment_file_name_prefix,
i + 1,
&track_spec);
}
p = vod_copy(p, VOD_DASH_MANIFEST_SEGMENT_LIST_FOOTER, sizeof(VOD_DASH_MANIFEST_SEGMENT_LIST_FOOTER) - 1);
return p;
}
static u_char*
dash_packager_write_mpd_period(
u_char* p,
write_period_context_t* context)
{
segment_duration_item_t** cur_duration_items;
media_sequence_t* cur_sequence;
adaptation_set_t* adaptation_set;
media_track_t* reference_track = NULL;
media_track_t** cur_track_ptr;
media_track_t* cur_track;
media_set_t* media_set = context->media_set;
const char* lang_code;
vod_str_t representation_id;
vod_str_t cur_base_url;
vod_str_t frame_rate;
u_char representation_id_buffer[MAX_TRACK_SPEC_LENGTH];
u_char frame_rate_buffer[VOD_DASH_MAX_FRAME_RATE_LEN];
u_char clip_spec[MAX_CLIP_SPEC_LENGTH];
uint64_t clip_start_offset;
uint32_t clip_duration;
uint32_t filtered_clip_offset;
uint32_t max_width = 0;
uint32_t max_height = 0;
uint32_t max_framerate_duration = 0;
uint32_t segment_count = 0;
uint32_t start_number;
uint32_t media_type;
uint32_t adapt_id = 1;
uint32_t subtitle_adapt_id = 0;
uint32_t sequence_index;
frame_rate.data = frame_rate_buffer;
representation_id.data = representation_id_buffer;
if (media_set->use_discontinuity)
{
clip_duration = media_set->timing.durations[context->clip_index];
switch (media_set->type)
{
case MEDIA_SET_VOD:
p = vod_sprintf(p,
VOD_DASH_MANIFEST_PERIOD_HEADER_DURATION,
media_set->initial_clip_index + context->clip_index,
clip_duration / 1000,
clip_duration % 1000);
break;
case MEDIA_SET_LIVE:
clip_start_offset = context->clip_start_time - context->segment_base_time;
if (context->clip_index + 1 < media_set->timing.total_count &&
media_set->timing.times[context->clip_index] + clip_duration !=
media_set->timing.times[context->clip_index + 1])
{
// there is a gap after this clip, output start time and duration
clip_duration += media_set->timing.times[context->clip_index] - context->clip_start_time;
p = vod_sprintf(p,
VOD_DASH_MANIFEST_PERIOD_HEADER_START_DURATION,
media_set->initial_clip_index + context->clip_index,
clip_start_offset / 1000,
clip_start_offset % 1000,
clip_duration / 1000,
clip_duration % 1000);
}
else
{
// last clip / no gap, output only the start time
p = vod_sprintf(p,
VOD_DASH_MANIFEST_PERIOD_HEADER_START,
media_set->initial_clip_index + context->clip_index,
clip_start_offset / 1000,
clip_start_offset % 1000);
}
break;
}
}
else
{
switch (media_set->type)
{
case MEDIA_SET_VOD:
p = vod_copy(p, VOD_DASH_MANIFEST_PERIOD_HEADER, sizeof(VOD_DASH_MANIFEST_PERIOD_HEADER) - 1);
break;
case MEDIA_SET_LIVE:
p = vod_copy(p, VOD_DASH_MANIFEST_PERIOD_HEADER_START_ZERO, sizeof(VOD_DASH_MANIFEST_PERIOD_HEADER_START_ZERO) - 1);
break;
}
}
// Note: clip_index can be greater than clip count when consistentSequenceMediaInfo is true
filtered_clip_offset = context->clip_index < media_set->clip_count ?
context->clip_index * media_set->total_track_count : 0;
dash_packager_get_clip_spec(clip_spec, media_set, context->clip_index);
// print the adaptation sets
for (adaptation_set = context->adaptation_sets.first, cur_duration_items = context->cur_duration_items;
adaptation_set < context->adaptation_sets.last;
adaptation_set++, cur_duration_items++)
{
media_type = adaptation_set->type;
switch (media_type)
{
case MEDIA_TYPE_VIDEO:
// get the max width, height and frame rate
for (cur_track_ptr = adaptation_set->first;
cur_track_ptr < adaptation_set->last;
cur_track_ptr++)
{
cur_track = (*cur_track_ptr) + filtered_clip_offset;
if (cur_track->media_info.u.video.width > max_width)
{
max_width = cur_track->media_info.u.video.width;
}
if (cur_track->media_info.u.video.height > max_height)
{
max_height = cur_track->media_info.u.video.height;
}
if (max_framerate_duration == 0 ||
max_framerate_duration > cur_track->media_info.min_frame_duration)
{
max_framerate_duration = cur_track->media_info.min_frame_duration;
}
}
reference_track = adaptation_set->last[-1] + filtered_clip_offset; // Note: taking the last track only for compatiblity with past versions of this module
// print the header
dash_packager_write_frame_rate(
max_framerate_duration,
DASH_TIMESCALE,
&frame_rate);
p = vod_sprintf(p,
VOD_DASH_MANIFEST_ADAPTATION_HEADER_VIDEO,
adapt_id++,
max_width,
max_height,
&frame_rate);
break;
case MEDIA_TYPE_AUDIO:
reference_track = (*adaptation_set->first) + filtered_clip_offset;
if (context->adaptation_sets.multi_audio)
{
p = vod_sprintf(p, VOD_DASH_MANIFEST_ADAPTATION_HEADER_AUDIO_LANG,
adapt_id++,
lang_get_rfc_5646_name(reference_track->media_info.language),
&reference_track->media_info.label);
}
else
{
p = vod_sprintf(p, VOD_DASH_MANIFEST_ADAPTATION_HEADER_AUDIO,
adapt_id++);
}
break;
case MEDIA_TYPE_SUBTITLE:
cur_track = (*adaptation_set->first) + filtered_clip_offset;
cur_sequence = cur_track->file_info.source->sequence;
sequence_index = cur_sequence->index;
if (context->conf->manifest_format == FORMAT_SEGMENT_LIST)
{
dash_packager_get_segment_list_base_url(context, cur_track, &cur_base_url, &sequence_index);
}
else
{
cur_base_url = context->base_url;
}
dash_packager_get_track_spec(
&representation_id,
media_set,
sequence_index,
cur_track->index,
cur_track->media_info.media_type);
if (representation_id.len > 0 && representation_id.data[representation_id.len - 1] == '-')
{
representation_id.len--;
}
lang_code = lang_get_rfc_5646_name(cur_track->media_info.language);
p = vod_sprintf(p, VOD_DASH_MANIFEST_ADAPTATION_SUBTITLE,
lang_code,
&cur_track->media_info.label,
lang_code,
subtitle_adapt_id++,
&cur_base_url,
&context->conf->subtitle_file_name_prefix,
clip_spec,
&representation_id);
continue;
}
if (context->extensions.adaptation_set.write != NULL)
{
p = context->extensions.adaptation_set.write(
context->extensions.adaptation_set.context,
p,
reference_track);
}
// get the segment index start number
start_number = (*cur_duration_items)[0].segment_index;
// print the segment template
switch (context->conf->manifest_format)
{
case FORMAT_SEGMENT_TEMPLATE:
// increment cur_duration_items (don't really need the count)
dash_packager_get_cur_clip_segment_count(
&context->segment_durations[media_type],
cur_duration_items);
p = dash_packager_write_segment_template(
p,
context->conf,
start_number,
context->clip_index == 0 ? media_set->initial_segment_clip_relative_index : 0,
clip_spec,
media_set,
reference_track,
&context->base_url);
break;
case FORMAT_SEGMENT_TIMELINE:
p = dash_packager_write_segment_timeline(
p,
context->conf,
start_number,
context->clip_start_time,
clip_spec,
reference_track,
&context->segment_durations[media_type],
cur_duration_items,
&context->base_url);
break;
case FORMAT_SEGMENT_LIST:
if (media_set->use_discontinuity)
{
segment_count = dash_packager_get_cur_clip_segment_count(
&context->segment_durations[media_type],
cur_duration_items);
}
else
{
segment_count = context->segment_durations[media_type].segment_count;
}
break;
}
// print the representations
for (cur_track_ptr = adaptation_set->first;
cur_track_ptr < adaptation_set->last;
cur_track_ptr++)
{
cur_track = (*cur_track_ptr) + filtered_clip_offset;
cur_sequence = cur_track->file_info.source->sequence;
dash_packager_get_track_spec(
&representation_id,
media_set,
cur_sequence->index,
cur_track->index,
cur_track->media_info.media_type);
switch (media_type)
{
case MEDIA_TYPE_VIDEO:
dash_packager_write_frame_rate(
cur_track->media_info.min_frame_duration,
DASH_TIMESCALE,
&frame_rate);
p = vod_sprintf(p,
VOD_DASH_MANIFEST_REPRESENTATION_HEADER_VIDEO,
&representation_id,
&dash_codecs[cur_track->media_info.codec_id].mime_type,
&cur_track->media_info.codec_name,
(uint32_t)cur_track->media_info.u.video.width,
(uint32_t)cur_track->media_info.u.video.height,
&frame_rate,
cur_track->media_info.bitrate
);
break;
case MEDIA_TYPE_AUDIO:
p = vod_sprintf(p,
VOD_DASH_MANIFEST_REPRESENTATION_HEADER_AUDIO,
&representation_id,
&dash_codecs[cur_track->media_info.codec_id].mime_type,
&cur_track->media_info.codec_name,
cur_track->media_info.u.audio.sample_rate,
cur_track->media_info.bitrate);
break;
}
if (context->conf->manifest_format == FORMAT_SEGMENT_LIST)
{
p = dash_packager_write_segment_list(
p,
context,
start_number,
clip_spec,
cur_sequence,
cur_track,
segment_count);
}
// write any additional tags
if (context->extensions.representation.write != NULL)
{
p = context->extensions.representation.write(
context->extensions.representation.context,
p,
cur_track);
}
p = vod_copy(p, VOD_DASH_MANIFEST_REPRESENTATION_FOOTER, sizeof(VOD_DASH_MANIFEST_REPRESENTATION_FOOTER) - 1);
}
// print the footer
p = vod_copy(p, VOD_DASH_MANIFEST_ADAPTATION_FOOTER, sizeof(VOD_DASH_MANIFEST_ADAPTATION_FOOTER) - 1);
}
p = vod_copy(p, VOD_DASH_MANIFEST_PERIOD_FOOTER, sizeof(VOD_DASH_MANIFEST_PERIOD_FOOTER) - 1);
return p;
}