vod_status_t
m3u8_builder_build_master_playlist(
request_context_t* request_context,
m3u8_config_t* conf,
vod_str_t* base_url,
bool_t include_file_index,
mpeg_metadata_t* mpeg_metadata,
vod_str_t* result)
{
WALK_STREAMS_BY_FILES_VARS(cur_file_streams);
mpeg_stream_metadata_t* stream;
media_info_t* video;
media_info_t* audio = NULL;
uint32_t bitrate;
u_char* p;
size_t max_video_stream_inf;
size_t max_audio_stream_inf;
size_t result_size;
// calculate the result size
max_video_stream_inf =
sizeof(m3u8_stream_inf_video) - 1 + 3 * VOD_INT32_LEN + MAX_CODEC_NAME_SIZE +
MAX_CODEC_NAME_SIZE + 1 +
sizeof(m3u8_stream_inf_suffix) - 1;
max_audio_stream_inf =
sizeof(m3u8_stream_inf_audio) + VOD_INT32_LEN + MAX_CODEC_NAME_SIZE +
sizeof(m3u8_stream_inf_suffix) - 1;
result_size =
sizeof(m3u8_header) +
mpeg_metadata->stream_count[MEDIA_TYPE_VIDEO] * max_video_stream_inf +
mpeg_metadata->stream_count[MEDIA_TYPE_AUDIO] * max_audio_stream_inf;
WALK_STREAMS_BY_FILES_START(cur_file_streams, mpeg_metadata)
stream = (cur_file_streams[MEDIA_TYPE_VIDEO] != NULL ?
cur_file_streams[MEDIA_TYPE_VIDEO] :
cur_file_streams[MEDIA_TYPE_AUDIO]);
if (base_url->len != 0)
{
result_size += base_url->len;
result_size += stream->file_info.uri.len + 1;
}
result_size += conf->index_file_name_prefix.len;
result_size += sizeof("-f-v-a") - 1 + VOD_INT32_LEN * 3;
result_size += sizeof(m3u8_url_suffix) - 1;
WALK_STREAMS_BY_FILES_END(cur_file_streams, mpeg_metadata)
// allocate the buffer
result->data = vod_alloc(request_context->pool, result_size);
if (result->data == NULL)
{
vod_log_debug0(VOD_LOG_DEBUG_LEVEL, request_context->log, 0,
"m3u8_builder_build_master_playlist: vod_alloc failed (2)");
return VOD_ALLOC_FAILED;
}
// write the header
p = vod_copy(result->data, m3u8_header, sizeof(m3u8_header) - 1);
// write the streams
WALK_STREAMS_BY_FILES_START(cur_file_streams, mpeg_metadata)
// write the stream information
if (cur_file_streams[MEDIA_TYPE_VIDEO] != NULL)
{
stream = cur_file_streams[MEDIA_TYPE_VIDEO];
video = &stream->media_info;
bitrate = video->bitrate;
if (cur_file_streams[MEDIA_TYPE_AUDIO] != NULL)
{
audio = &cur_file_streams[MEDIA_TYPE_AUDIO]->media_info;
bitrate += audio->bitrate;
}
p = vod_sprintf(p, m3u8_stream_inf_video,
bitrate,
(uint32_t)video->u.video.width,
(uint32_t)video->u.video.height,
&video->codec_name);
if (cur_file_streams[MEDIA_TYPE_AUDIO] != NULL)
{
*p++ = ',';
p = vod_copy(p, audio->codec_name.data, audio->codec_name.len);
}
}
else
{
stream = cur_file_streams[MEDIA_TYPE_AUDIO];
audio = &stream->media_info;
p = vod_sprintf(p, m3u8_stream_inf_audio, audio->bitrate, &audio->codec_name);
}
p = vod_copy(p, m3u8_stream_inf_suffix, sizeof(m3u8_stream_inf_suffix) - 1);
// write the stream url
if (base_url->len != 0)
{
// absolute url only
p = vod_copy(p, base_url->data, base_url->len);
p = vod_copy(p, stream->file_info.uri.data, stream->file_info.uri.len);
*p++ = '/';
}
p = vod_copy(p, conf->index_file_name_prefix.data, conf->index_file_name_prefix.len);
if (base_url->len == 0 && include_file_index)
{
p = vod_sprintf(p, "-f%uD", stream->file_info.file_index + 1);
}
if (cur_file_streams[MEDIA_TYPE_VIDEO] != NULL)
{
p = vod_sprintf(p, "-v%uD", cur_file_streams[MEDIA_TYPE_VIDEO]->track_index + 1);
}
if (cur_file_streams[MEDIA_TYPE_AUDIO] != NULL)
{
p = vod_sprintf(p, "-a%uD", cur_file_streams[MEDIA_TYPE_AUDIO]->track_index + 1);
}
p = vod_copy(p, m3u8_url_suffix, sizeof(m3u8_url_suffix) - 1);
WALK_STREAMS_BY_FILES_END(cur_file_streams, mpeg_metadata)
result->len = p - result->data;
if (result->len > result_size)
{
vod_log_error(VOD_LOG_ERR, request_context->log, 0,
"m3u8_builder_build_master_playlist: result length %uz exceeded allocated length %uz",
result->len, result_size);
return VOD_UNEXPECTED;
}
return VOD_OK;
}
vod_status_t
hds_packager_build_manifest(
request_context_t* request_context,
hds_manifest_config_t* conf,
vod_str_t* manifest_id,
segmenter_conf_t* segmenter_conf,
bool_t include_file_index,
mpeg_metadata_t* mpeg_metadata,
vod_str_t* result)
{
WALK_STREAMS_BY_FILES_VARS(cur_file_streams);
mpeg_stream_metadata_t* stream;
segment_durations_t* segment_durations;
uint32_t bitrate;
uint32_t index;
uint32_t abst_atom_size;
uint32_t max_abst_atom_size = 0;
uint32_t total_stream_count = mpeg_metadata->stream_count[MEDIA_TYPE_VIDEO] + mpeg_metadata->stream_count[MEDIA_TYPE_AUDIO];
size_t result_size;
vod_status_t rc;
u_char* temp_buffer;
u_char* p;
segment_durations = vod_alloc(
request_context->pool,
total_stream_count * sizeof(*segment_durations));
if (segment_durations == NULL)
{
vod_log_debug0(VOD_LOG_DEBUG_LEVEL, request_context->log, 0,
"hds_packager_build_manifest: vod_alloc failed (1)");
return VOD_ALLOC_FAILED;
}
// calculate the result size
result_size =
sizeof(HDS_MANIFEST_HEADER) - 1 + 2 * VOD_INT32_LEN + manifest_id->len +
sizeof(HDS_MANIFEST_FOOTER);
index = 0;
WALK_STREAMS_BY_FILES_START(cur_file_streams, mpeg_metadata)
rc = segmenter_conf->get_segment_durations(
request_context,
segmenter_conf,
cur_file_streams,
MEDIA_TYPE_COUNT,
&segment_durations[index]);
if (rc != VOD_OK)
{
return rc;
}
abst_atom_size = ABST_BASE_ATOM_SIZE + (segment_durations[index].item_count + 1) * sizeof(afrt_entry_t);
if (abst_atom_size > max_abst_atom_size)
{
max_abst_atom_size = abst_atom_size;
}
result_size +=
sizeof(HDS_BOOTSTRAP_HEADER) - 1 + VOD_INT32_LEN +
vod_base64_encoded_length(abst_atom_size) +
sizeof(HDS_BOOTSTRAP_FOOTER) - 1;
result_size +=
sizeof(HDS_MEDIA_HEADER_PREFIX_VIDEO) - 1 + 3 * VOD_INT32_LEN +
conf->fragment_file_name_prefix.len + sizeof("-f-v-a-") - 1 + 3 * VOD_INT32_LEN +
sizeof(HDS_MEDIA_HEADER_SUFFIX) - 1 + VOD_INT32_LEN +
vod_base64_encoded_length(amf0_max_total_size) +
sizeof(HDS_MEDIA_FOOTER) - 1;
index++;
WALK_STREAMS_BY_FILES_END(cur_file_streams, mpeg_metadata)
// allocate the buffers
result->data = vod_alloc(request_context->pool, result_size);
if (result->data == NULL)
{
vod_log_debug0(VOD_LOG_DEBUG_LEVEL, request_context->log, 0,
"hds_packager_build_manifest: vod_alloc failed (2)");
return VOD_ALLOC_FAILED;
}
temp_buffer = vod_alloc(request_context->pool, MAX(amf0_max_total_size, max_abst_atom_size));
if (temp_buffer == NULL)
{
vod_log_debug0(VOD_LOG_DEBUG_LEVEL, request_context->log, 0,
"hds_packager_build_manifest: vod_alloc failed (1)");
return VOD_ALLOC_FAILED;
}
// print the manifest header
p = vod_sprintf(result->data, HDS_MANIFEST_HEADER,
manifest_id,
(uint32_t)(mpeg_metadata->duration_millis / 1000),
(uint32_t)(mpeg_metadata->duration_millis % 1000));
// bootstrap tags
index = 0;
WALK_STREAMS_BY_FILES_START(cur_file_streams, mpeg_metadata)
p = vod_sprintf(p, HDS_BOOTSTRAP_HEADER, index);
p = hds_write_base64_abst_atom(p, temp_buffer, &segment_durations[index]);
p = vod_copy(p, HDS_BOOTSTRAP_FOOTER, sizeof(HDS_BOOTSTRAP_FOOTER) - 1);
index++;
WALK_STREAMS_BY_FILES_END(cur_file_streams, mpeg_metadata)
// media tags
index = 0;
WALK_STREAMS_BY_FILES_START(cur_file_streams, mpeg_metadata)
if (cur_file_streams[MEDIA_TYPE_VIDEO] != NULL)
{
stream = cur_file_streams[MEDIA_TYPE_VIDEO];
bitrate = stream->media_info.bitrate;
if (cur_file_streams[MEDIA_TYPE_AUDIO] != NULL)
{
bitrate += cur_file_streams[MEDIA_TYPE_AUDIO]->media_info.bitrate;
}
p = vod_sprintf(p, HDS_MEDIA_HEADER_PREFIX_VIDEO,
bitrate / 1000,
(uint32_t)stream->media_info.u.video.width,
(uint32_t)stream->media_info.u.video.height);
}
else
{
stream = cur_file_streams[MEDIA_TYPE_AUDIO];
p = vod_sprintf(p, HDS_MEDIA_HEADER_PREFIX_AUDIO,
stream->media_info.bitrate / 1000);
}
// url
p = vod_copy(p, conf->fragment_file_name_prefix.data, conf->fragment_file_name_prefix.len);
if (include_file_index)
{
p = vod_sprintf(p, "-f%uD", stream->file_info.file_index + 1);
}
if (cur_file_streams[MEDIA_TYPE_VIDEO] != NULL)
{
p = vod_sprintf(p, "-v%uD", cur_file_streams[MEDIA_TYPE_VIDEO]->track_index + 1);
}
if (cur_file_streams[MEDIA_TYPE_AUDIO] != NULL)
{
p = vod_sprintf(p, "-a%uD", cur_file_streams[MEDIA_TYPE_AUDIO]->track_index + 1);
}
*p++ = '-';
p = vod_sprintf(p, HDS_MEDIA_HEADER_SUFFIX, index++);
p = hds_amf0_write_base64_metadata(p, temp_buffer, cur_file_streams);
p = vod_copy(p, HDS_MEDIA_FOOTER, sizeof(HDS_MEDIA_FOOTER) - 1);
WALK_STREAMS_BY_FILES_END(cur_file_streams, mpeg_metadata)
// manifest footer
p = vod_copy(p, HDS_MANIFEST_FOOTER, sizeof(HDS_MANIFEST_FOOTER) - 1);
result->len = p - result->data;
if (result->len > result_size)
{
vod_log_error(VOD_LOG_ERR, request_context->log, 0,
"hds_packager_build_manifest: result length %uz exceeded allocated length %uz",
result->len, result_size);
return VOD_UNEXPECTED;
}
vod_free(request_context->pool, temp_buffer);
return VOD_OK;
}
