static bool_t
dash_packager_compare_tracks(uintptr_t bitrate_threshold, const media_info_t* mi1, const media_info_t* mi2)
{
if (mi1->bitrate == 0 ||
mi2->bitrate == 0 ||
mi1->bitrate + bitrate_threshold <= mi2->bitrate ||
mi2->bitrate + bitrate_threshold <= mi1->bitrate)
{
return FALSE;
}
if (mi1->codec_name.len != mi2->codec_name.len ||
vod_memcmp(mi1->codec_name.data, mi2->codec_name.data, mi2->codec_name.len) != 0)
{
return FALSE;
}
if (mi1->media_type == MEDIA_TYPE_VIDEO)
{
return (mi1->u.video.width == mi2->u.video.width) &&
(mi1->u.video.height == mi2->u.video.height);
}
return TRUE;
}
static u_char*
edash_packager_write_content_protection(void* ctx, u_char* p, media_track_t* track)
{
write_content_protection_context_t* context = ctx;
drm_info_t* drm_info = (drm_info_t*)track->file_info.drm_info;
drm_system_info_t* cur_info;
vod_str_t base64;
vod_str_t pssh;
p = vod_copy(p, VOD_EDASH_MANIFEST_CONTENT_PROTECTION_CENC, sizeof(VOD_EDASH_MANIFEST_CONTENT_PROTECTION_CENC) - 1);
for (cur_info = drm_info->pssh_array.first; cur_info < drm_info->pssh_array.last; cur_info++)
{
if (vod_memcmp(cur_info->system_id, edash_playready_system_id, sizeof(edash_playready_system_id)) == 0)
{
if (context->write_playready_kid)
{
p = vod_copy(p, VOD_EDASH_MANIFEST_CONTENT_PROTECTION_PLAYREADY_V2_PART1, sizeof(VOD_EDASH_MANIFEST_CONTENT_PROTECTION_PLAYREADY_V2_PART1) - 1);
p = mp4_encrypt_write_guid(p, cur_info->system_id);
p = vod_copy(p, VOD_EDASH_MANIFEST_CONTENT_PROTECTION_PLAYREADY_V2_PART2, sizeof(VOD_EDASH_MANIFEST_CONTENT_PROTECTION_PLAYREADY_V2_PART2) - 1);
p = mp4_encrypt_write_guid(p, drm_info->key_id);
}
else
{
p = vod_copy(p, VOD_EDASH_MANIFEST_CONTENT_PROTECTION_PLAYREADY_PART1, sizeof(VOD_EDASH_MANIFEST_CONTENT_PROTECTION_PLAYREADY_PART1) - 1);
p = mp4_encrypt_write_guid(p, cur_info->system_id);
}
p = vod_copy(p, VOD_EDASH_MANIFEST_CONTENT_PROTECTION_PLAYREADY_PART3, sizeof(VOD_EDASH_MANIFEST_CONTENT_PROTECTION_PLAYREADY_PART3) - 1);
base64.data = p;
vod_encode_base64(&base64, &cur_info->data);
p += base64.len;
p = vod_copy(p, VOD_EDASH_MANIFEST_CONTENT_PROTECTION_PLAYREADY_PART4, sizeof(VOD_EDASH_MANIFEST_CONTENT_PROTECTION_PLAYREADY_PART4) - 1);
}
else
{
p = vod_copy(p, VOD_EDASH_MANIFEST_CONTENT_PROTECTION_CENC_PART1, sizeof(VOD_EDASH_MANIFEST_CONTENT_PROTECTION_CENC_PART1) - 1);
p = mp4_encrypt_write_guid(p, cur_info->system_id);
p = vod_copy(p, VOD_EDASH_MANIFEST_CONTENT_PROTECTION_CENC_PART2, sizeof(VOD_EDASH_MANIFEST_CONTENT_PROTECTION_CENC_PART2) - 1);
p = mp4_encrypt_write_guid(p, drm_info->key_id);
p = vod_copy(p, VOD_EDASH_MANIFEST_CONTENT_PROTECTION_CENC_PART3, sizeof(VOD_EDASH_MANIFEST_CONTENT_PROTECTION_CENC_PART3) - 1);
pssh.data = context->temp_buffer;
pssh.len = edash_packager_write_pssh(pssh.data, cur_info) - pssh.data;
base64.data = p;
vod_encode_base64(&base64, &pssh);
p += base64.len;
p = vod_copy(p, VOD_EDASH_MANIFEST_CONTENT_PROTECTION_CENC_PART4, sizeof(VOD_EDASH_MANIFEST_CONTENT_PROTECTION_CENC_PART4) - 1);
}
}
return p;
}
static int
track_group_key_compare(track_group_key_t* key1, track_group_key_t* key2)
{
if (key1->codec_id != key2->codec_id)
{
return key1->codec_id < key2->codec_id ? -1 : 1;
}
if (key1->label.len != key2->label.len)
{
return key1->label.len < key2->label.len ? -1 : 1;
}
if (key1->label.data != key2->label.data)
{
return vod_memcmp(key1->label.data, key2->label.data, key1->label.len);
}
return 0;
}
vod_status_t
edash_packager_build_mpd(
request_context_t* request_context,
dash_manifest_config_t* conf,
vod_str_t* base_url,
media_set_t* media_set,
vod_str_t* result)
{
media_sequence_t* cur_sequence;
drm_system_info_t* cur_info;
drm_info_t* drm_info;
u_char* pssh_temp_buffer = NULL;
size_t representation_tags_size;
size_t cur_drm_tags_size;
size_t cur_pssh_size;
size_t max_pssh_size = 0;
vod_status_t rc;
representation_tags_size = 0;
for (cur_sequence = media_set->sequences; cur_sequence < media_set->sequences_end; cur_sequence++)
{
drm_info = (drm_info_t*)cur_sequence->drm_info;
cur_drm_tags_size = sizeof(VOD_EDASH_MANIFEST_CONTENT_PROTECTION_CENC) - 1;
for (cur_info = drm_info->pssh_array.first; cur_info < drm_info->pssh_array.last; cur_info++)
{
if (vod_memcmp(cur_info->system_id, edash_playready_system_id, sizeof(edash_playready_system_id)) == 0)
{
cur_drm_tags_size +=
sizeof(VOD_EDASH_MANIFEST_CONTENT_PROTECTION_PLAYREADY_PART1) - 1 +
VOD_GUID_LENGTH +
sizeof(VOD_EDASH_MANIFEST_CONTENT_PROTECTION_PLAYREADY_PART2) - 1 +
vod_base64_encoded_length(cur_info->data.len) +
sizeof(VOD_EDASH_MANIFEST_CONTENT_PROTECTION_PLAYREADY_PART3) - 1;
}
else
{
cur_pssh_size = ATOM_HEADER_SIZE + sizeof(pssh_atom_t) + cur_info->data.len;
if (cur_pssh_size > max_pssh_size)
{
max_pssh_size = cur_pssh_size;
}
cur_drm_tags_size +=
sizeof(VOD_EDASH_MANIFEST_CONTENT_PROTECTION_CENC_PART1) - 1 +
VOD_GUID_LENGTH +
sizeof(VOD_EDASH_MANIFEST_CONTENT_PROTECTION_CENC_PART2) - 1 +
VOD_GUID_LENGTH +
sizeof(VOD_EDASH_MANIFEST_CONTENT_PROTECTION_CENC_PART3) - 1 +
vod_base64_encoded_length(cur_pssh_size) +
sizeof(VOD_EDASH_MANIFEST_CONTENT_PROTECTION_CENC_PART4) - 1;
continue;
}
}
representation_tags_size += cur_drm_tags_size * cur_sequence->total_track_count;
}
if (max_pssh_size > 0)
{
pssh_temp_buffer = vod_alloc(request_context->pool, max_pssh_size);
if (pssh_temp_buffer == NULL)
{
vod_log_debug0(VOD_LOG_DEBUG_LEVEL, request_context->log, 0,
"edash_packager_build_mpd: vod_alloc failed");
return VOD_ALLOC_FAILED;
}
}
rc = dash_packager_build_mpd(
request_context,
conf,
base_url,
media_set,
representation_tags_size,
edash_packager_write_content_protection,
pssh_temp_buffer,
result);
if (rc != VOD_OK)
{
vod_log_debug1(VOD_LOG_DEBUG_LEVEL, request_context->log, 0,
"edash_packager_build_mpd: dash_packager_build_mpd failed %i", rc);
return rc;
}
return VOD_OK;
}
vod_status_t
edash_packager_build_mpd(
request_context_t* request_context,
dash_manifest_config_t* conf,
vod_str_t* base_url,
media_set_t* media_set,
bool_t drm_single_key,
vod_str_t* result)
{
write_content_protection_context_t context;
dash_manifest_extensions_t extensions;
media_sequence_t* cur_sequence;
drm_system_info_t* cur_info;
tags_writer_t content_prot_writer;
drm_info_t* drm_info;
size_t representation_tags_size;
size_t cur_drm_tags_size;
size_t cur_pssh_size;
size_t max_pssh_size = 0;
vod_status_t rc;
representation_tags_size = 0;
for (cur_sequence = media_set->sequences; cur_sequence < media_set->sequences_end; cur_sequence++)
{
drm_info = (drm_info_t*)cur_sequence->drm_info;
cur_drm_tags_size = sizeof(VOD_EDASH_MANIFEST_CONTENT_PROTECTION_CENC) - 1;
for (cur_info = drm_info->pssh_array.first; cur_info < drm_info->pssh_array.last; cur_info++)
{
if (vod_memcmp(cur_info->system_id, edash_playready_system_id, sizeof(edash_playready_system_id)) == 0)
{
cur_drm_tags_size +=
sizeof(VOD_EDASH_MANIFEST_CONTENT_PROTECTION_PLAYREADY_V2_PART1) - 1 +
VOD_GUID_LENGTH +
sizeof(VOD_EDASH_MANIFEST_CONTENT_PROTECTION_PLAYREADY_V2_PART2) - 1 +
VOD_GUID_LENGTH +
sizeof(VOD_EDASH_MANIFEST_CONTENT_PROTECTION_PLAYREADY_PART3) - 1 +
vod_base64_encoded_length(cur_info->data.len) +
sizeof(VOD_EDASH_MANIFEST_CONTENT_PROTECTION_PLAYREADY_PART4) - 1;
}
else
{
cur_pssh_size = ATOM_HEADER_SIZE + sizeof(pssh_atom_t) + cur_info->data.len;
if (cur_pssh_size > max_pssh_size)
{
max_pssh_size = cur_pssh_size;
}
cur_drm_tags_size +=
sizeof(VOD_EDASH_MANIFEST_CONTENT_PROTECTION_CENC_PART1) - 1 +
VOD_GUID_LENGTH +
sizeof(VOD_EDASH_MANIFEST_CONTENT_PROTECTION_CENC_PART2) - 1 +
VOD_GUID_LENGTH +
sizeof(VOD_EDASH_MANIFEST_CONTENT_PROTECTION_CENC_PART3) - 1 +
vod_base64_encoded_length(cur_pssh_size) +
sizeof(VOD_EDASH_MANIFEST_CONTENT_PROTECTION_CENC_PART4) - 1;
continue;
}
}
representation_tags_size += cur_drm_tags_size * cur_sequence->total_track_count;
}
context.write_playready_kid = conf->write_playready_kid;
if (max_pssh_size > 0)
{
context.temp_buffer = vod_alloc(request_context->pool, max_pssh_size);
if (context.temp_buffer == NULL)
{
vod_log_debug0(VOD_LOG_DEBUG_LEVEL, request_context->log, 0,
"edash_packager_build_mpd: vod_alloc failed");
return VOD_ALLOC_FAILED;
}
}
content_prot_writer.size = representation_tags_size;
content_prot_writer.write = edash_packager_write_content_protection;
content_prot_writer.context = &context;
if (drm_single_key)
{
// write the ContentProtection tags under AdaptationSet
extensions.adaptation_set = content_prot_writer;
vod_memzero(&extensions.representation, sizeof(extensions.representation));
}
else
{
// write the ContentProtection tags under Representation
vod_memzero(&extensions.adaptation_set, sizeof(extensions.adaptation_set));
extensions.representation = content_prot_writer;
}
rc = dash_packager_build_mpd(
request_context,
conf,
base_url,
media_set,
&extensions,
result);
if (rc != VOD_OK)
{
vod_log_debug1(VOD_LOG_DEBUG_LEVEL, request_context->log, 0,
"edash_packager_build_mpd: dash_packager_build_mpd failed %i", rc);
return rc;
}
return VOD_OK;
}
