Go to the documentation of this file.
22 #include <libxml/parser.h>
35 #define INITIAL_BUFFER_SIZE 32768
173 return ((
val + 0x3F) >> 6) << 6;
196 ret = sscanf(datetime,
"%d-%d-%dT%d:%d:%fZ", &year, &month, &day, &hour, &minute, &second);
201 timeinfo.tm_year = year - 1900;
202 timeinfo.tm_mon = month - 1;
203 timeinfo.tm_mday = day;
204 timeinfo.tm_hour = hour;
205 timeinfo.tm_min = minute;
206 timeinfo.tm_sec = (
int)second;
224 if (*ptr ==
'P' || *ptr ==
'T') {
235 days = (uint32_t)
value;
238 hours = (uint32_t)
value;
241 mins = (uint32_t)
value;
244 secs = (uint32_t)
value;
252 return ((days * 24 + hours) * 60 + mins) * 60 + secs;
267 if (num == cur_seq_no)
279 if (num == cur_seq_no)
374 for (
i = 0;
i <
c->n_videos;
i++) {
385 for (
i = 0;
i <
c->n_audios;
i++) {
396 for (
i = 0;
i <
c->n_subtitles;
i++) {
409 const char *proto_name =
NULL;
414 if (url[6] ==
'+' || url[6] ==
':')
424 proto_name_len = strlen(proto_name);
427 if (strcmp(
c->allowed_extensions,
"ALL") && !
av_match_ext(url,
c->allowed_extensions)) {
429 "Filename extension of \'%s\' is not a common multimedia extension, blocked for security reasons.\n"
430 "If you wish to override this adjust allowed_extensions, you can set it to \'ALL\' to allow all\n",
439 if (!strncmp(proto_name, url, proto_name_len) && url[proto_name_len] ==
':')
441 else if (
av_strstart(url,
"crypto",
NULL) && !strncmp(proto_name, url + 7, proto_name_len) && url[7 + proto_name_len] ==
':')
443 else if (strcmp(proto_name,
"file") || !strncmp(url,
"file,", 5))
452 char *new_cookies =
NULL;
475 char *rep_bandwidth_val,
486 for (
i = 0;
i < n_baseurl_nodes; ++
i) {
487 if (baseurl_nodes[
i] &&
488 baseurl_nodes[
i]->children &&
489 baseurl_nodes[
i]->children->type == XML_TEXT_NODE) {
490 text = xmlNodeGetContent(baseurl_nodes[
i]->children);
492 memset(tmp_str, 0, max_url_size);
509 if (rep_bandwidth_val && tmp_str[0] !=
'\0') {
527 for (
i = 0;
i < n_nodes; ++
i) {
529 val = xmlGetProp(nodes[
i], attrname);
540 xmlNodePtr node = rootnode;
545 node = xmlFirstElementChild(node);
550 node = xmlNextElementSibling(node);
563 for (
i = 0;
i < 2;
i++) {
564 attr =
i ?
"mimeType" :
"contentType";
565 val = xmlGetProp(node, attr);
590 char *str_end_offset;
600 xmlNodePtr fragmenturl_node,
601 xmlNodePtr *baseurl_nodes,
603 char *rep_bandwidth_val)
606 char *initialization_val =
NULL;
607 char *media_val =
NULL;
608 char *range_val =
NULL;
612 if (!
av_strcasecmp(fragmenturl_node->name,
"Initialization")) {
613 initialization_val = xmlGetProp(fragmenturl_node,
"sourceURL");
614 range_val = xmlGetProp(fragmenturl_node,
"range");
615 if (initialization_val || range_val) {
620 xmlFree(initialization_val);
628 xmlFree(initialization_val);
634 }
else if (!
av_strcasecmp(fragmenturl_node->name,
"SegmentURL")) {
635 media_val = xmlGetProp(fragmenturl_node,
"media");
636 range_val = xmlGetProp(fragmenturl_node,
"mediaRange");
637 if (media_val || range_val) {
666 xmlNodePtr fragment_timeline_node)
668 xmlAttrPtr attr =
NULL;
677 attr = fragment_timeline_node->properties;
679 val = xmlGetProp(fragment_timeline_node, attr->name);
682 av_log(
s,
AV_LOG_WARNING,
"parse_manifest_segmenttimeline attr->name = %s val is NULL\n", attr->name);
708 char *tmp_str =
NULL;
710 char *mpdName =
NULL;
711 xmlNodePtr node =
NULL;
712 char *baseurl =
NULL;
713 char *root_url =
NULL;
723 int tmp_max_url_size = strlen(url);
725 for (
i = n_baseurl_nodes-1;
i >= 0 ;
i--) {
726 text = xmlNodeGetContent(baseurl_nodes[
i]);
729 tmp_max_url_size += strlen(text);
737 tmp_max_url_size =
aligned(tmp_max_url_size);
746 size = strlen(mpdName);
752 if (!tmp_str || !path) {
758 for (rootId = n_baseurl_nodes - 1; rootId > 0; rootId --) {
759 if (!(node = baseurl_nodes[rootId])) {
762 text = xmlNodeGetContent(node);
770 node = baseurl_nodes[rootId];
771 baseurl = xmlNodeGetContent(node);
774 xmlNodeSetContent(node, root_url);
778 size = strlen(root_url);
779 isRootHttp =
ishttp(root_url);
781 if (
size > 0 && root_url[
size - 1] != token) {
786 for (
i = 0;
i < n_baseurl_nodes; ++
i) {
790 text = xmlNodeGetContent(baseurl_nodes[
i]);
792 memset(tmp_str, 0, strlen(tmp_str));
793 if (!
ishttp(text) && isRootHttp) {
796 start = (text[0] == token);
805 memset(p + 1, 0, strlen(p));
807 av_strlcat(tmp_str, text + start, tmp_max_url_size);
808 xmlNodeSetContent(baseurl_nodes[
i], tmp_str);
815 if (tmp_max_url_size > *max_url_size) {
816 *max_url_size = tmp_max_url_size;
827 xmlNodePtr adaptionset_node,
828 xmlNodePtr mpd_baseurl_node,
829 xmlNodePtr period_baseurl_node,
830 xmlNodePtr period_segmenttemplate_node,
831 xmlNodePtr period_segmentlist_node,
832 xmlNodePtr fragment_template_node,
833 xmlNodePtr content_component_node,
834 xmlNodePtr adaptionset_baseurl_node,
835 xmlNodePtr adaptionset_segmentlist_node,
836 xmlNodePtr adaptionset_supplementalproperty_node)
842 xmlNodePtr representation_segmenttemplate_node =
NULL;
843 xmlNodePtr representation_baseurl_node =
NULL;
844 xmlNodePtr representation_segmentlist_node =
NULL;
845 xmlNodePtr segmentlists_tab[3];
846 xmlNodePtr fragment_timeline_node =
NULL;
847 xmlNodePtr fragment_templates_tab[5];
849 xmlNodePtr baseurl_nodes[4];
850 xmlNodePtr representation_node = node;
851 char *rep_bandwidth_val;
873 if (
c->adaptionset_lang) {
885 rep_bandwidth_val = xmlGetProp(representation_node,
"bandwidth");
886 val = xmlGetProp(representation_node,
"id");
894 baseurl_nodes[0] = mpd_baseurl_node;
895 baseurl_nodes[1] = period_baseurl_node;
896 baseurl_nodes[2] = adaptionset_baseurl_node;
897 baseurl_nodes[3] = representation_baseurl_node;
900 c->max_url_size =
aligned(
c->max_url_size
901 + (rep->
id ? strlen(rep->
id) : 0)
902 + (rep_bandwidth_val ? strlen(rep_bandwidth_val) : 0));
905 if (representation_segmenttemplate_node || fragment_template_node || period_segmenttemplate_node) {
906 fragment_timeline_node =
NULL;
907 fragment_templates_tab[0] = representation_segmenttemplate_node;
908 fragment_templates_tab[1] = adaptionset_segmentlist_node;
909 fragment_templates_tab[2] = fragment_template_node;
910 fragment_templates_tab[3] = period_segmenttemplate_node;
911 fragment_templates_tab[4] = period_segmentlist_node;
920 c->max_url_size =
aligned(
c->max_url_size + strlen(
val));
922 c->max_url_size, rep->
id,
923 rep_bandwidth_val,
val);
931 c->max_url_size =
aligned(
c->max_url_size + strlen(
val));
933 c->max_url_size, rep->
id,
934 rep_bandwidth_val,
val);
961 if (adaptionset_supplementalproperty_node) {
962 char *scheme_id_uri = xmlGetProp(adaptionset_supplementalproperty_node,
"schemeIdUri");
964 int is_last_segment_number = !
av_strcasecmp(scheme_id_uri,
"http://dashif.org/guidelines/last-segment-number");
965 xmlFree(scheme_id_uri);
966 if (is_last_segment_number) {
967 val = xmlGetProp(adaptionset_supplementalproperty_node,
"value");
969 av_log(
s,
AV_LOG_ERROR,
"Missing value attribute in adaptionset_supplementalproperty_node\n");
980 if (!fragment_timeline_node)
982 if (!fragment_timeline_node)
984 if (!fragment_timeline_node)
986 if (fragment_timeline_node) {
987 fragment_timeline_node = xmlFirstElementChild(fragment_timeline_node);
988 while (fragment_timeline_node) {
992 fragment_timeline_node = xmlNextElementSibling(fragment_timeline_node);
995 }
else if (representation_baseurl_node && !representation_segmentlist_node) {
1005 rep->
id, rep_bandwidth_val,
NULL);
1009 }
else if (representation_segmentlist_node) {
1012 xmlNodePtr fragmenturl_node =
NULL;
1013 segmentlists_tab[0] = representation_segmentlist_node;
1014 segmentlists_tab[1] = adaptionset_segmentlist_node;
1015 segmentlists_tab[2] = period_segmentlist_node;
1036 fragmenturl_node = xmlFirstElementChild(representation_segmentlist_node);
1037 while (fragmenturl_node) {
1039 baseurl_nodes, rep->
id,
1043 fragmenturl_node = xmlNextElementSibling(fragmenturl_node);
1047 if (!fragment_timeline_node)
1049 if (fragment_timeline_node) {
1050 fragment_timeline_node = xmlFirstElementChild(fragment_timeline_node);
1051 while (fragment_timeline_node) {
1055 fragment_timeline_node = xmlNextElementSibling(fragment_timeline_node);
1060 rep->
id ? rep->
id :
"");
1066 rep->
bandwidth = rep_bandwidth_val ? atoi(rep_bandwidth_val) : 0;
1069 char *rep_framerate_val = xmlGetProp(representation_node,
"frameRate");
1070 if (rep_framerate_val) {
1074 xmlFree(rep_framerate_val);
1093 if (rep_bandwidth_val)
1094 xmlFree(rep_bandwidth_val);
1108 if (!adaptionset_node) {
1112 c->adaptionset_lang = xmlGetProp(adaptionset_node,
"lang");
1118 xmlNodePtr adaptionset_node,
1119 xmlNodePtr mpd_baseurl_node,
1120 xmlNodePtr period_baseurl_node,
1121 xmlNodePtr period_segmenttemplate_node,
1122 xmlNodePtr period_segmentlist_node)
1126 xmlNodePtr fragment_template_node =
NULL;
1127 xmlNodePtr content_component_node =
NULL;
1128 xmlNodePtr adaptionset_baseurl_node =
NULL;
1129 xmlNodePtr adaptionset_segmentlist_node =
NULL;
1130 xmlNodePtr adaptionset_supplementalproperty_node =
NULL;
1131 xmlNodePtr node =
NULL;
1137 node = xmlFirstElementChild(adaptionset_node);
1140 fragment_template_node = node;
1141 }
else if (!
av_strcasecmp(node->name,
"ContentComponent")) {
1142 content_component_node = node;
1144 adaptionset_baseurl_node = node;
1146 adaptionset_segmentlist_node = node;
1147 }
else if (!
av_strcasecmp(node->name,
"SupplementalProperty")) {
1148 adaptionset_supplementalproperty_node = node;
1153 period_baseurl_node,
1154 period_segmenttemplate_node,
1155 period_segmentlist_node,
1156 fragment_template_node,
1157 content_component_node,
1158 adaptionset_baseurl_node,
1159 adaptionset_segmentlist_node,
1160 adaptionset_supplementalproperty_node);
1164 node = xmlNextElementSibling(node);
1168 xmlFree(
c->adaptionset_lang);
1169 c->adaptionset_lang =
NULL;
1177 node = xmlFirstElementChild(node);
1180 val = xmlNodeGetContent(node);
1185 val = xmlNodeGetContent(node);
1190 val = xmlNodeGetContent(node);
1195 node = xmlNextElementSibling(node);
1210 xmlNodePtr root_element =
NULL;
1211 xmlNodePtr node =
NULL;
1212 xmlNodePtr period_node =
NULL;
1213 xmlNodePtr tmp_node =
NULL;
1214 xmlNodePtr mpd_baseurl_node =
NULL;
1215 xmlNodePtr period_baseurl_node =
NULL;
1216 xmlNodePtr period_segmenttemplate_node =
NULL;
1217 xmlNodePtr period_segmentlist_node =
NULL;
1218 xmlNodePtr adaptionset_node =
NULL;
1219 xmlAttrPtr attr =
NULL;
1221 uint32_t period_duration_sec = 0;
1222 uint32_t period_start_sec = 0;
1247 doc = xmlReadMemory(buf.str, buf.len,
c->base_url,
NULL, 0);
1248 root_element = xmlDocGetRootElement(doc);
1249 node = root_element;
1257 if (node->type != XML_ELEMENT_NODE ||
1260 av_log(
s,
AV_LOG_ERROR,
"Unable to parse '%s' - wrong root node name[%s] type[%d]\n",
url, node->name, (
int)node->type);
1264 val = xmlGetProp(node,
"type");
1274 attr = node->properties;
1276 val = xmlGetProp(node, attr->name);
1280 av_log(
s,
AV_LOG_TRACE,
"c->availability_start_time = [%"PRId64
"]\n",
c->availability_start_time);
1281 }
else if (!
av_strcasecmp(attr->name,
"availabilityEndTime")) {
1287 }
else if (!
av_strcasecmp(attr->name,
"minimumUpdatePeriod")) {
1290 }
else if (!
av_strcasecmp(attr->name,
"timeShiftBufferDepth")) {
1292 av_log(
s,
AV_LOG_TRACE,
"c->time_shift_buffer_depth = [%"PRId64
"]\n",
c->time_shift_buffer_depth);
1296 }
else if (!
av_strcasecmp(attr->name,
"suggestedPresentationDelay")) {
1298 av_log(
s,
AV_LOG_TRACE,
"c->suggested_presentation_delay = [%"PRId64
"]\n",
c->suggested_presentation_delay);
1299 }
else if (!
av_strcasecmp(attr->name,
"mediaPresentationDuration")) {
1301 av_log(
s,
AV_LOG_TRACE,
"c->media_presentation_duration = [%"PRId64
"]\n",
c->media_presentation_duration);
1309 mpd_baseurl_node = xmlCopyNode(tmp_node,1);
1311 mpd_baseurl_node = xmlNewNode(
NULL,
"BaseURL");
1315 node = xmlFirstElementChild(node);
1318 period_duration_sec = 0;
1319 period_start_sec = 0;
1320 attr = node->properties;
1322 val = xmlGetProp(node, attr->name);
1331 if ((period_duration_sec) >= (
c->period_duration)) {
1333 c->period_duration = period_duration_sec;
1334 c->period_start = period_start_sec;
1335 if (
c->period_start > 0)
1336 c->media_presentation_duration =
c->period_duration;
1338 }
else if (!
av_strcasecmp(node->name,
"ProgramInformation")) {
1341 node = xmlNextElementSibling(node);
1349 adaptionset_node = xmlFirstElementChild(period_node);
1350 while (adaptionset_node) {
1352 period_baseurl_node = adaptionset_node;
1353 }
else if (!
av_strcasecmp(adaptionset_node->name,
"SegmentTemplate")) {
1354 period_segmenttemplate_node = adaptionset_node;
1355 }
else if (!
av_strcasecmp(adaptionset_node->name,
"SegmentList")) {
1356 period_segmentlist_node = adaptionset_node;
1357 }
else if (!
av_strcasecmp(adaptionset_node->name,
"AdaptationSet")) {
1360 adaptionset_node = xmlNextElementSibling(adaptionset_node);
1366 xmlFreeNode(mpd_baseurl_node);
1380 int64_t start_time_offset = 0;
1398 }
else if (
c->publish_time > 0 && !
c->availability_start_time) {
1399 if (
c->min_buffer_time) {
1440 num =
c->period_duration / length_of_each_segment;
1456 if (rep_dest && rep_src ) {
1470 if (rep_dest && rep_src ) {
1491 int n_videos =
c->n_videos;
1493 int n_audios =
c->n_audios;
1495 int n_subtitles =
c->n_subtitles;
1497 char *base_url =
c->base_url;
1505 c->subtitles =
NULL;
1510 if (
c->n_videos != n_videos) {
1512 "new manifest has mismatched no. of video representations, %d -> %d\n",
1513 n_videos,
c->n_videos);
1516 if (
c->n_audios != n_audios) {
1518 "new manifest has mismatched no. of audio representations, %d -> %d\n",
1519 n_audios,
c->n_audios);
1522 if (
c->n_subtitles != n_subtitles) {
1524 "new manifest has mismatched no. of subtitles representations, %d -> %d\n",
1525 n_subtitles,
c->n_subtitles);
1529 for (
i = 0;
i < n_videos;
i++) {
1545 for (
i = 0;
i < n_audios;
i++) {
1567 c->base_url = base_url;
1576 c->n_subtitles = n_subtitles;
1577 c->subtitles = subtitles;
1578 c->n_audios = n_audios;
1580 c->n_videos = n_videos;
1608 }
else if (
c->is_live) {
1669 uint8_t *buf,
int buf_size)
1696 if (seg->
size >= 0) {
1718 static const int max_init_section_size = 1024 * 1024;
1730 "Failed to open an initialization section\n");
1739 sec_size = max_init_section_size;
1742 "Downloading an initialization section of size %"PRId64
"\n",
1745 sec_size =
FFMIN(sec_size, max_init_section_size);
1772 static int read_data(
void *opaque, uint8_t *buf,
int buf_size)
1839 "A DASH playlist item '%s' referred to an external file '%s'. "
1840 "Opening this file was forbidden for security reasons\n",
1849 memset(&pls->
pb, 0x00,
sizeof(pls->
pb));
1859 uint8_t *avio_ctx_buffer =
NULL;
1877 if (!avio_ctx_buffer ) {
1891 pls->
ctx->
probesize =
s->probesize > 0 ?
s->probesize : 1024 * 4;
1905 if (
c->cenc_decryption_key)
1906 av_dict_set(&in_fmt_opts,
"decryption_key",
c->cenc_decryption_key, 0);
1914 #if FF_API_R_FRAME_RATE
1973 if (first_init_section ==
NULL || n_pls == 0)
1976 url = first_init_section->
url;
1979 for (
i=0;
i<n_pls;
i++) {
1980 if (!pls[
i]->init_section)
2024 c->interrupt_callback = &
s->interrupt_callback;
2044 for (
i = 0;
i <
c->n_videos;
i++) {
2046 if (
i > 0 &&
c->is_init_section_common_video) {
2062 for (
i = 0;
i <
c->n_audios;
i++) {
2064 if (
i > 0 &&
c->is_init_section_common_audio) {
2080 for (
i = 0;
i <
c->n_subtitles;
i++) {
2081 rep =
c->subtitles[
i];
2082 if (
i > 0 &&
c->is_init_section_common_subtitle) {
2103 for (
i = 0;
i <
c->n_videos;
i++) {
2111 for (
i = 0;
i <
c->n_audios;
i++) {
2120 for (
i = 0;
i <
c->n_subtitles;
i++) {
2121 rep =
c->subtitles[
i];
2135 for (
i = 0;
i < n;
i++) {
2143 for (j = 0; j < n; j++) {
2168 for (
i = 0;
i <
c->n_videos;
i++) {
2177 for (
i = 0;
i <
c->n_audios;
i++) {
2187 for (
i = 0;
i <
c->n_subtitles;
i++) {
2188 rep =
c->subtitles[
i];
2238 seek_pos_msec, dry_run ?
" (dry)" :
"");
2256 "last_seq_no[%"PRId64
"].\n",
2306 for (
i = 0;
i <
c->n_videos;
i++) {
2310 for (
i = 0;
i <
c->n_audios;
i++) {
2314 for (
i = 0;
i <
c->n_subtitles;
i++) {
2327 if (
av_stristr(p->
buf,
"dash:profile:isoff-on-demand:2011") ||
2341 #define OFFSET(x) offsetof(DASHContext, x)
2342 #define FLAGS AV_OPT_FLAG_DECODING_PARAM
2344 {
"allowed_extensions",
"List of file extensions that dash is allowed to access",
2346 {.str =
"aac,m4a,m4s,m4v,mov,mp4,webm,ts"},
2347 INT_MIN, INT_MAX,
FLAGS},
#define AV_OPT_SEARCH_CHILDREN
Search in possible children of the given object first.
static int reopen_demux_for_component(AVFormatContext *s, struct representation *pls)
@ AV_ROUND_UP
Round toward +infinity.
static void close_demux_for_component(struct representation *pls)
#define AV_LOG_WARNING
Something somehow does not look correct.
static int64_t calc_next_seg_no_from_timelines(struct representation *pls, int64_t cur_time)
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C program
static int open_demux_for_component(AVFormatContext *s, struct representation *pls)
static int read_data(void *opaque, uint8_t *buf, int buf_size)
void ffio_init_context(FFIOContext *s, unsigned char *buffer, int buffer_size, int write_flag, void *opaque, int(*read_packet)(void *opaque, uint8_t *buf, int buf_size), int(*write_packet)(void *opaque, const uint8_t *buf, int buf_size), int64_t(*seek)(void *opaque, int64_t offset, int whence))
int ffio_copy_url_options(AVIOContext *pb, AVDictionary **avio_opts)
Read url related dictionary options from the AVIOContext and write to the given dictionary.
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
static uint64_t get_current_time_in_sec(void)
static int ishttp(char *url)
static int64_t calc_min_seg_no(AVFormatContext *s, struct representation *pls)
void av_bprint_init(AVBPrint *buf, unsigned size_init, unsigned size_max)
char * av_stristr(const char *s1, const char *s2)
Locate the first case-independent occurrence in the string haystack of the string needle.
AVStream * avformat_new_stream(AVFormatContext *s, const struct AVCodec *c)
Add a new stream to a media file.
static void free_video_list(DASHContext *c)
#define AVERROR_EOF
End of file.
enum AVDiscard discard
Selects which packets can be discarded at will and do not need to be demuxed.
uint32_t init_sec_buf_read_offset
static struct fragment * get_current_fragment(struct representation *pls)
int is_init_section_common_subtitle
int av_strcasecmp(const char *a, const char *b)
Locale-independent case-insensitive compare.
static int dash_close(AVFormatContext *s)
static av_cold void cleanup(FlashSV2Context *s)
AVStream ** streams
A list of all streams in the file.
AVIOInterruptCB * interrupt_callback
static int parse_manifest_segmenturlnode(AVFormatContext *s, struct representation *rep, xmlNodePtr fragmenturl_node, xmlNodePtr *baseurl_nodes, char *rep_id_val, char *rep_bandwidth_val)
#define AV_LOG_VERBOSE
Detailed information.
int64_t probesize
Maximum number of bytes read from input in order to determine stream properties.
int av_read_frame(AVFormatContext *s, AVPacket *pkt)
Return the next frame of a stream.
void ff_read_frame_flush(AVFormatContext *s)
Flush the frame reader.
static int read_from_url(struct representation *pls, struct fragment *seg, uint8_t *buf, int buf_size)
int64_t avio_size(AVIOContext *s)
Get the filesize.
uint64_t availability_end_time
static xmlNodePtr find_child_node_by_name(xmlNodePtr rootnode, const char *nodename)
Callback for checking whether to abort blocking functions.
static int64_t get_segment_start_time_based_on_timeline(struct representation *pls, int64_t cur_seq_no)
struct representation ** subtitles
void avformat_close_input(AVFormatContext **s)
Close an opened input AVFormatContext.
AVIOInterruptCB interrupt_callback
Custom interrupt callbacks for the I/O layer.
struct fragment * init_section
static void free_timelines_list(struct representation *pls)
static int64_t calc_max_seg_no(struct representation *pls, DASHContext *c)
static void free_fragment(struct fragment **seg)
static int64_t calc_cur_seg_no(AVFormatContext *s, struct representation *pls)
static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp, int flags)
static av_cold int read_close(AVFormatContext *ctx)
static double val(void *priv, double ch)
static void recheck_discard_flags(AVFormatContext *s, struct representation **p, int n)
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf type
time_t av_timegm(struct tm *tm)
Convert the decomposed UTC time in tm to a time_t value.
AVProgram * av_new_program(AVFormatContext *ac, int id)
static uint64_t get_utc_date_time_insec(AVFormatContext *s, const char *datetime)
static enum AVMediaType get_content_type(xmlNodePtr node)
int ff_check_interrupt(AVIOInterruptCB *cb)
Check if the user has requested to interrupt a blocking function associated with cb.
static const AVOption dash_options[]
#define AV_DICT_DONT_STRDUP_VAL
Take ownership of a value that's been allocated with av_malloc() or another memory allocation functio...
uint64_t suggested_presentation_delay
static int64_t seek_data(void *opaque, int64_t offset, int whence)
static int aligned(int val)
#define AV_LOG_TRACE
Extremely verbose debugging, useful for libav* development.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
static void free_representation(struct representation *pls)
int avformat_open_input(AVFormatContext **ps, const char *url, const AVInputFormat *fmt, AVDictionary **options)
Open an input stream and read the header.
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
static void move_metadata(AVStream *st, const char *key, char **value)
char * allowed_extensions
static void move_segments(struct representation *rep_src, struct representation *rep_dest, DASHContext *c)
int avio_read_to_bprint(AVIOContext *h, struct AVBPrint *pb, size_t max_size)
Read contents of h into print buffer, up to max_size bytes, or up to EOF.
int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
Seek to the keyframe at timestamp.
int flags
Flags modifying the (de)muxer behaviour.
static void free_fragment_list(struct representation *pls)
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
char * av_strtok(char *s, const char *delim, char **saveptr)
Split the string into several tokens which can be accessed by successive calls to av_strtok().
int av_match_ext(const char *filename, const char *extensions)
Return a positive value if the given filename has one of the given extensions, 0 otherwise.
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
static int parse_programinformation(AVFormatContext *s, xmlNodePtr node)
static uint32_t get_duration_insec(AVFormatContext *s, const char *duration)
struct representation ** videos
#define INITIAL_BUFFER_SIZE
uint32_t init_sec_buf_size
int64_t max_analyze_duration
Maximum duration (in AV_TIME_BASE units) of the data read from input in avformat_find_stream_info().
#define FF_INFMT_FLAG_INIT_CLEANUP
For an FFInputFormat with this flag set read_close() needs to be called by the caller upon read_heade...
@ AVDISCARD_ALL
discard all
AVCodecParameters * codecpar
Codec parameters associated with this stream.
#define LIBAVUTIL_VERSION_INT
static int read_header(FFV1Context *f)
Describe the class of an AVClass context structure.
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented.
Rational number (pair of numerator and denominator).
char * av_strireplace(const char *str, const char *from, const char *to)
Locale-independent strings replace.
static int is_common_init_section_exist(struct representation **pls, int n_pls)
const char * av_default_item_name(void *ptr)
Return the context name.
static int dash_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
AVIOContext * pb
I/O context.
This structure contains the data a format has to probe a file.
static void move_timelines(struct representation *rep_src, struct representation *rep_dest, DASHContext *c)
struct timeline ** timelines
uint64_t minimum_update_period
const FFInputFormat ff_dash_demuxer
static int parse_manifest(AVFormatContext *s, const char *url, AVIOContext *in)
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
static char * get_val_from_nodes_tab(xmlNodePtr *nodes, const int n_nodes, const char *attrname)
@ AV_ROUND_DOWN
Round toward -infinity.
int av_strncasecmp(const char *a, const char *b, size_t n)
Locale-independent case-insensitive compare.
int64_t av_rescale_rnd(int64_t a, int64_t b, int64_t c, enum AVRounding rnd)
Rescale a 64-bit integer with specified rounding.
uint64_t time_shift_buffer_depth
int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
Read packets of a media file to get stream information.
static int resolve_content_path(AVFormatContext *s, const char *url, int *max_url_size, xmlNodePtr *baseurl_nodes, int n_baseurl_nodes)
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
AVFormatContext * avformat_alloc_context(void)
Allocate an AVFormatContext.
uint64_t media_presentation_duration
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
int av_bprint_finalize(AVBPrint *buf, char **ret_str)
Finalize a print buffer.
static int64_t start_time
static AVRational av_make_q(int num, int den)
Create an AVRational.
@ AVMEDIA_TYPE_UNKNOWN
Usually treated as AVMEDIA_TYPE_DATA.
static int copy_init_section(struct representation *rep_dest, struct representation *rep_src)
uint64_t availability_start_time
uint32_t init_sec_data_len
static int dash_read_header(AVFormatContext *s)
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf offset
static void free_audio_list(DASHContext *c)
void av_dict_free(AVDictionary **pm)
Free all the memory allocated for an AVDictionary struct and all keys and values.
int av_strstart(const char *str, const char *pfx, const char **ptr)
Return non-zero if pfx is a prefix of str.
int av_probe_input_buffer(AVIOContext *pb, const AVInputFormat **fmt, const char *url, void *logctx, unsigned int offset, unsigned int max_probe_size)
Like av_probe_input_buffer2() but returns 0 on success.
#define AV_LOG_INFO
Standard information.
char * cenc_decryption_key
int av_parse_video_rate(AVRational *rate, const char *arg)
Parse str and store the detected values in *rate.
static int open_url(AVFormatContext *s, AVIOContext **pb, const char *url, AVDictionary **opts, AVDictionary *opts2, int *is_http)
static void free_subtitle_list(DASHContext *c)
#define i(width, name, range_min, range_max)
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
static int dash_probe(const AVProbeData *p)
#define AV_TIME_BASE
Internal time base represented as integer.
struct representation ** audios
int64_t fragment_timescale
The exact code depends on how similar the blocks are and how related they are to the and needs to apply these operations to the correct inlink or outlink if there are several Macros are available to factor that when no extra processing is needed
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf default value
int is_init_section_common_audio
static int parse_manifest_adaptationset(AVFormatContext *s, const char *url, xmlNodePtr adaptionset_node, xmlNodePtr mpd_baseurl_node, xmlNodePtr period_baseurl_node, xmlNodePtr period_segmenttemplate_node, xmlNodePtr period_segmentlist_node)
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
New fields can be added to the end with minor version bumps.
int64_t av_rescale(int64_t a, int64_t b, int64_t c)
Rescale a 64-bit integer with rounding to nearest.
static int nested_io_open(AVFormatContext *s, AVIOContext **pb, const char *url, int flags, AVDictionary **opts)
int disposition
Stream disposition - a combination of AV_DISPOSITION_* flags.
int id
Format-specific stream ID.
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
size_t av_strlcat(char *dst, const char *src, size_t size)
Append the string src to the string dst, but to a total length of no more than size - 1 bytes,...
static struct fragment * get_Fragment(char *range)
static int parse_manifest_segmenttimeline(AVFormatContext *s, struct representation *rep, xmlNodePtr fragment_timeline_node)
int av_dynarray_add_nofree(void *tab_ptr, int *nb_ptr, void *elem)
Add an element to a dynamic array.
static int parse_manifest_adaptationset_attr(AVFormatContext *s, xmlNodePtr adaptionset_node)
struct fragment * cur_seg
static char * get_content_url(xmlNodePtr *baseurl_nodes, int n_baseurl_nodes, int max_url_size, char *rep_id_val, char *rep_bandwidth_val, char *val)
int is_init_section_common_video
void avformat_free_context(AVFormatContext *s)
Free an AVFormatContext and all its streams.
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
AVRational r_frame_rate
Real base framerate of the stream.
static int refresh_manifest(AVFormatContext *s)
int(* io_open)(struct AVFormatContext *s, AVIOContext **pb, const char *url, int flags, AVDictionary **options)
A callback for opening new IO streams.
static int update_init_section(struct representation *pls)
static int parse_manifest_representation(AVFormatContext *s, const char *url, xmlNodePtr node, xmlNodePtr adaptionset_node, xmlNodePtr mpd_baseurl_node, xmlNodePtr period_baseurl_node, xmlNodePtr period_segmenttemplate_node, xmlNodePtr period_segmentlist_node, xmlNodePtr fragment_template_node, xmlNodePtr content_component_node, xmlNodePtr adaptionset_baseurl_node, xmlNodePtr adaptionset_segmentlist_node, xmlNodePtr adaptionset_supplementalproperty_node)
static int dash_read_packet(AVFormatContext *s, AVPacket *pkt)
static int open_input(DASHContext *c, struct representation *pls, struct fragment *seg)
int64_t av_gettime(void)
Get the current time in microseconds.
int av_dict_set_int(AVDictionary **pm, const char *key, int64_t value, int flags)
Convenience wrapper for av_dict_set() that converts the value to a string and stores it.
#define AVIO_FLAG_READ
read-only
char * av_strdup(const char *s)
Duplicate a string.
static int read_probe(const AVProbeData *p)
int avio_open2(AVIOContext **s, const char *filename, int flags, const AVIOInterruptCB *int_cb, AVDictionary **options)
Create and initialize a AVIOContext for accessing the resource indicated by url.
unsigned char * buffer
Start of the buffer.
int ff_make_absolute_url(char *buf, int size, const char *base, const char *rel)
Convert a relative url into an absolute url, given a base url.
This structure stores compressed data.
void ff_dash_fill_tmpl_params(char *dst, size_t buffer_size, const char *template, int rep_id, int number, int bit_rate, int64_t time)
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
void av_fast_malloc(void *ptr, unsigned int *size, size_t min_size)
Allocate a buffer, reusing the given one if large enough.
int av_dict_copy(AVDictionary **dst, const AVDictionary *src, int flags)
Copy entries from one AVDictionary struct into another.
int64_t fragment_duration
const char * avio_find_protocol_name(const char *url)
Return the name of the protocol that will handle the passed URL.
#define flags(name, subs,...)
int avio_close(AVIOContext *s)
Close the resource accessed by the AVIOContext s and free it.
size_t av_strlcpy(char *dst, const char *src, size_t size)
Copy the string src to dst, but no more than size - 1 bytes, and null-terminate dst.
int av_opt_get(void *obj, const char *name, int search_flags, uint8_t **out_val)
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
static int dash_seek(AVFormatContext *s, struct representation *pls, int64_t seek_pos_msec, int flags, int dry_run)
#define AVERROR_EXIT
Immediate exit was requested; the called function should not be restarted.
@ AV_OPT_TYPE_STRING
Underlying C type is a uint8_t* that is either NULL or points to a C string allocated with the av_mal...
int pts_wrap_bits
Number of bits in timestamps.
struct fragment ** fragments
void * priv_data
Format private data.
static const AVClass dash_class
int64_t presentation_timeoffset
int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
Copy the contents of src to dst.
int avio_feof(AVIOContext *s)
Similar to feof() but also returns nonzero on read errors.