--- /dev/null
+diff -uNr ffmpeg-3.3_orig/configure ffmpeg-3.3_dash_demux/configure
+--- ffmpeg-3.3_orig/configure 2016-12-06 00:28:58.000000000 +0100
++++ ffmpeg-3.3_dash_demux/configure 2017-10-22 14:30:41.170550486 +0200
+@@ -292,6 +292,7 @@
+ --disable-securetransport disable Secure Transport, needed for TLS support
+ on OSX if openssl and gnutls are not used [autodetect]
+ --disable-xlib disable xlib [autodetect]
++ --disable-xml2 disable XML parsing using the C library libxml2 [autodetect]
+ --disable-zlib disable zlib [autodetect]
+
+ The following libraries provide various hardware acceleration features:
+@@ -1497,6 +1498,7 @@
+ sdl2
+ securetransport
+ xlib
++ xml2
+ zlib
+ "
+
+@@ -2916,6 +2918,7 @@
+ caf_demuxer_select="iso_media riffdec"
+ caf_muxer_select="iso_media"
+ dash_muxer_select="mp4_muxer"
++dash_demuxer_select="xml2"
+ dirac_demuxer_select="dirac_parser"
+ dts_demuxer_select="dca_parser"
+ dtshd_demuxer_select="dca_parser"
+@@ -5734,6 +5737,7 @@
+ disabled zlib || check_lib zlib.h zlibVersion -lz || disable zlib
+ disabled bzlib || check_lib bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
+ disabled lzma || check_lib lzma.h lzma_version_number -llzma || disable lzma
++disabled xml2 || check_lib libxml/xmlversion.h xmlCheckVersion -lxml2 || disable xml2
+
+ check_lib math.h sin -lm && LIBM="-lm"
+ disabled crystalhd || check_lib "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd || disable crystalhd
+diff -uNr ffmpeg-3.3_orig/libavformat/allformats.c ffmpeg-3.3_dash_demux/libavformat/allformats.c
+--- ffmpeg-3.3_orig/libavformat/allformats.c 2016-12-06 00:28:54.000000000 +0100
++++ ffmpeg-3.3_dash_demux/libavformat/allformats.c 2017-10-22 14:30:41.170550486 +0200
+@@ -96,7 +96,7 @@
+ REGISTER_DEMUXER (CINE, cine);
+ REGISTER_DEMUXER (CONCAT, concat);
+ REGISTER_MUXER (CRC, crc);
+- REGISTER_MUXER (DASH, dash);
++ REGISTER_MUXDEMUX(DASH, dash);
+ REGISTER_MUXDEMUX(DATA, data);
+ REGISTER_MUXDEMUX(DAUD, daud);
+ REGISTER_DEMUXER (DCSTR, dcstr);
+diff -uNr ffmpeg-3.3_orig/libavformat/dashdec.c ffmpeg-3.3_dash_demux/libavformat/dashdec.c
+--- ffmpeg-3.3_orig/libavformat/dashdec.c 1970-01-01 01:00:00.000000000 +0100
++++ ffmpeg-3.3_dash_demux/libavformat/dashdec.c 2017-10-22 16:09:40.837356820 +0200
+@@ -0,0 +1,2065 @@
++/*
++ * Dynamic Adaptive Streaming over HTTP demux
++ * Copyright (c) 2017 samsamsam@o2.pl based on HLS demux
++ *
++ * This file is part of FFmpeg.
++ *
++ * FFmpeg is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU Lesser General Public
++ * License as published by the Free Software Foundation; either
++ * version 2.1 of the License, or (at your option) any later version.
++ *
++ * FFmpeg is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ * Lesser General Public License for more details.
++ *
++ * You should have received a copy of the GNU Lesser General Public
++ * License along with FFmpeg; if not, write to the Free Software
++ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
++ */
++
++ /* Code prepared for ffmpeg 2.8.9 and then ported to ffmpeg 3.3
++ * At now it allow to play one selected representation for audio and video components.
++ *
++ */
++
++/**
++ * @file
++ */
++#include "libavutil/avstring.h"
++#include "libavutil/avassert.h"
++#include "libavutil/intreadwrite.h"
++#include "libavutil/mathematics.h"
++#include "libavutil/opt.h"
++#include "libavutil/dict.h"
++#include "libavutil/time.h"
++#include "avformat.h"
++#include "internal.h"
++#include "avio_internal.h"
++#include "url.h"
++#include "id3v2.h"
++
++#define INITIAL_BUFFER_SIZE 32768
++
++/////////////////////////////////////////////////////////////////////////////
++/////////////////////////////////////////////////////////////////////////////
++#include <time.h>
++#include <unistd.h>
++#include <string.h>
++
++static struct tm* ResolveUTCDateTime(const char *dateTimeString)
++{
++ time_t rawtime;
++ struct tm* timeInfo = NULL;
++ int y = 0;
++ int M = 0;
++ int d = 0;
++ int h = 0;
++ int m = 0;
++ float s = 0.0;
++
++ /* ISO-8601 date parser */
++
++ if (dateTimeString == NULL || '\0' == dateTimeString[0])
++ return NULL;
++
++
++ time ( &rawtime );
++ timeInfo = gmtime ( &rawtime );
++
++ sscanf(dateTimeString, "%d-%d-%dT%d:%d:%fZ", &y, &M, &d, &h, &m, &s);
++
++ timeInfo->tm_year = y - 1900;
++ timeInfo->tm_mon = M - 1;
++ timeInfo->tm_mday = d;
++
++ timeInfo->tm_hour = h;
++ timeInfo->tm_min = m;
++ timeInfo->tm_sec = (int)s;
++
++ return timeInfo;
++}
++
++static struct tm* GetCurrentUTCTime(void)
++{
++ time_t rawTime;
++ time(&rawTime);
++ return gmtime(&rawTime);
++}
++
++static uint32_t GetCurrentTimeInSec(void)
++{
++ return (uint32_t)mktime(GetCurrentUTCTime());
++}
++
++static uint32_t GetUTCDateTimeInSec(const char *datetime)
++{
++ return (uint32_t)mktime(ResolveUTCDateTime(datetime));
++}
++
++static uint32_t GetDurationInSec(const char *duration)
++{
++ /* ISO-8601 duration parser */
++
++ uint32_t days = 0;
++ uint32_t hours = 0;
++ uint32_t mins = 0;
++ uint32_t secs = 0;
++
++ const char *ptr = duration;
++ while(*ptr)
++ {
++ float value = 0;
++ uint32_t charsRead;
++ char type = '\0';
++
++ if(*ptr == 'P' || *ptr == 'T')
++ {
++ ptr++;
++ continue;
++ }
++
++ if(sscanf(ptr, "%f%c%n", &value, &type, &charsRead) != 2) {
++ return 0; /* parser error */
++ }
++ switch(type) {
++ case 'D':
++ days = (uint32_t)value;
++ break;
++ case 'H':
++ hours = (uint32_t)value;
++ break;
++ case 'M':
++ mins = (uint32_t)value;
++ break;
++ case 'S':
++ secs = (uint32_t)value;
++ break;
++ default:
++ // handle invalid type
++ break;
++ }
++ ptr += charsRead;
++ }
++ return ((days * 24 + hours) * 60 + mins) * 60 + secs;
++}
++//###########################################################################
++
++struct segment {
++ //int64_t duration;
++ int64_t url_offset;
++ int64_t size;
++ char *url;
++};
++
++struct timeline {
++ int64_t t;
++ int32_t r;
++ int64_t d;
++};
++
++enum RepType {
++ REP_TYPE_UNSPECIFIED,
++ REP_TYPE_AUDIO,
++ REP_TYPE_VIDEO
++};
++
++enum TemUrlType {
++ TMP_URL_TYPE_UNSPECIFIED,
++ TMP_URL_TYPE_NUMBER,
++ TMP_URL_TYPE_TIME
++};
++
++/*
++ * Each playlist has its own demuxer. If it currently is active,
++ * it has an open AVIOContext too, and potentially an AVPacket
++ * containing the next packet from this stream.
++ */
++struct representation {
++ char *url_template;
++ char *url_template_pattern;
++ char *url_template_format;
++ enum TemUrlType tmp_url_type;
++ AVIOContext pb;
++ AVIOContext *input;
++ AVFormatContext *parent;
++ AVFormatContext *ctx;
++ AVPacket pkt;
++ int rep_idx;
++ int rep_count;
++ int stream_index;
++
++ enum RepType type;
++ int64_t target_duration;
++
++ int n_segments;
++ struct segment **segments; /* VOD list of segment for profile */
++
++ int n_timelines;
++ struct timeline **timelines;
++
++ int64_t first_seq_no;
++ int64_t last_seq_no;
++ int64_t start_number; /* used in case when we have dynamic list of segment to know which segments are new one*/
++
++ int64_t segmentDuration;
++ int64_t segmentTimescalce;
++
++ int64_t cur_seq_no;
++ int64_t cur_seg_offset;
++ int64_t cur_seg_size;
++ struct segment *cur_seg;
++
++ /* Currently active Media Initialization Section */
++ struct segment *init_section;
++ uint8_t *init_sec_buf;
++ uint32_t init_sec_buf_size;
++ uint32_t init_sec_data_len;
++ uint32_t init_sec_buf_read_offset;
++
++ int fix_multiple_stsd_order;
++
++ int64_t cur_timestamp;
++ int is_restart_needed;
++};
++
++typedef struct DASHContext {
++ AVClass *class;
++
++ char *base_url;
++
++ struct representation *cur_video;
++ struct representation *cur_audio;
++
++ uint32_t mediaPresentationDurationSec;
++
++ uint32_t suggestedPresentationDelaySec;
++ uint32_t presentationDelaySec;
++ uint32_t availabilityStartTimeSec;
++ uint32_t publishTimeSec;
++ uint32_t minimumUpdatePeriodSec;
++ uint32_t timeShiftBufferDepthSec;
++ uint32_t minBufferTimeSec;
++
++ uint32_t periodDurationSec;
++ uint32_t periodStartSec;
++
++ int is_live;
++
++ int audio_rep_index;
++ int video_rep_index;
++
++ AVIOInterruptCB *interrupt_callback;
++ char *user_agent; ///< holds HTTP user agent set as an AVOption to the HTTP protocol context
++ char *cookies; ///< holds HTTP cookie values set in either the initial response or as an AVOption to the HTTP protocol context
++ char *headers; ///< holds HTTP headers set as an AVOption to the HTTP protocol context
++ AVDictionary *avio_opts;
++} DASHContext;
++
++
++static void free_segment(struct segment **seg)
++{
++ if (!seg || !(*seg)) {
++ return;
++ }
++
++ av_freep(&(*seg)->url);
++ av_freep(seg);
++}
++
++static void free_segment_list(struct representation *pls)
++{
++ int i;
++ for (i = 0; i < pls->n_segments; i++) {
++ av_freep(&pls->segments[i]->url);
++ av_freep(&pls->segments[i]);
++ }
++ av_freep(&pls->segments);
++ pls->n_segments = 0;
++}
++
++static void free_timelines_list(struct representation *pls)
++{
++ int i;
++ for (i = 0; i < pls->n_timelines; i++) {
++ av_freep(&pls->timelines[i]);
++ }
++ av_freep(&pls->timelines);
++ pls->n_timelines = 0;
++}
++
++/*
++ * Used to reset a statically allocated AVPacket to a clean slate,
++ * containing no data.
++ */
++static void reset_packet(AVPacket *pkt)
++{
++ av_init_packet(pkt);
++ pkt->data = NULL;
++}
++
++static void free_representation(struct representation *pls)
++{
++ free_segment_list(pls);
++ free_timelines_list(pls);
++ free_segment(&pls->cur_seg);
++ free_segment(&pls->init_section);
++ av_freep(&pls->init_sec_buf);
++ av_packet_unref(&pls->pkt);
++ reset_packet(&pls->pkt);
++ av_freep(&pls->pb.buffer);
++ if (pls->input)
++ ff_format_io_close(pls->parent, &pls->input);
++ if (pls->ctx) {
++ pls->ctx->pb = NULL;
++ avformat_close_input(&pls->ctx);
++ }
++
++ av_free(pls->url_template_pattern);
++ av_free(pls->url_template_format);
++ av_free(pls->url_template);
++ av_free(pls);
++}
++
++static void update_options(char **dest, const char *name, void *src)
++{
++ av_freep(dest);
++ av_opt_get(src, name, AV_OPT_SEARCH_CHILDREN, (uint8_t**)dest);
++ if (*dest && !strlen(*dest))
++ av_freep(dest);
++}
++
++static int open_url(AVFormatContext *s, AVIOContext **pb, const char *url,
++ AVDictionary *opts, AVDictionary *opts2, int *is_http)
++{
++ DASHContext *c = s->priv_data;
++ AVDictionary *tmp = NULL;
++ const char *proto_name = NULL;
++ int ret;
++
++ av_dict_copy(&tmp, opts, 0);
++ av_dict_copy(&tmp, opts2, 0);
++
++ if (!proto_name)
++ proto_name = avio_find_protocol_name(url);
++
++ if (!proto_name)
++ return AVERROR_INVALIDDATA;
++
++ // only http(s) & file are allowed
++ if (!av_strstart(proto_name, "http", NULL) && !av_strstart(proto_name, "file", NULL))
++ return AVERROR_INVALIDDATA;
++ if (!strncmp(proto_name, url, strlen(proto_name)) && url[strlen(proto_name)] == ':')
++ ;
++ else if (strcmp(proto_name, "file") || !strncmp(url, "file,", 5))
++ return AVERROR_INVALIDDATA;
++
++ ret = s->io_open(s, pb, url, AVIO_FLAG_READ, &tmp);
++ if (ret >= 0) {
++ // update cookies on http response with setcookies.
++ void *u = (s->flags & AVFMT_FLAG_CUSTOM_IO) ? NULL : s->pb;
++ update_options(&c->cookies, "cookies", u);
++ av_dict_set(&opts, "cookies", c->cookies, 0);
++ }
++
++ av_dict_free(&tmp);
++
++ if (is_http)
++ *is_http = av_strstart(proto_name, "http", NULL);
++
++ return ret;
++}
++
++/////////////////////////////////////////////////////////////////////////////
++/////////////////////////////////////////////////////////////////////////////
++#include <libxml/parser.h>
++#include <libxml/tree.h>
++
++#include <string.h>
++#include <stdlib.h>
++#include <stddef.h>
++
++#if (__STDC_VERSION__ >= 199901L)
++#include <stdint.h>
++#endif
++
++//http://creativeandcritical.net/str-replace-c
++
++static char *repl_str(const char *str, const char *from, const char *to)
++{
++ /* Adjust each of the below values to suit your needs. */
++
++ /* Increment positions cache size initially by this number. */
++ size_t cache_sz_inc = 16;
++ /* Thereafter, each time capacity needs to be increased,
++ * multiply the increment by this factor. */
++ const size_t cache_sz_inc_factor = 3;
++ /* But never increment capacity by more than this number. */
++ const size_t cache_sz_inc_max = 1048576;
++
++ char *pret, *ret = NULL;
++ const char *pstr2, *pstr = str;
++ size_t i, count = 0;
++ #if (__STDC_VERSION__ >= 199901L)
++ uintptr_t *pos_cache_tmp, *pos_cache = NULL;
++ #else
++ ptrdiff_t *pos_cache_tmp, *pos_cache = NULL;
++ #endif
++ size_t cache_sz = 0;
++ size_t cpylen, orglen, retlen, tolen, fromlen = strlen(from);
++
++ /* Find all matches and cache their positions. */
++ while ((pstr2 = strstr(pstr, from)) != NULL) {
++ count++;
++
++ /* Increase the cache size when necessary. */
++ if (cache_sz < count) {
++ cache_sz += cache_sz_inc;
++ pos_cache_tmp = realloc(pos_cache, sizeof(*pos_cache) * cache_sz);
++ if (pos_cache_tmp == NULL) {
++ goto end_repl_str;
++ } else pos_cache = pos_cache_tmp;
++ cache_sz_inc *= cache_sz_inc_factor;
++ if (cache_sz_inc > cache_sz_inc_max) {
++ cache_sz_inc = cache_sz_inc_max;
++ }
++ }
++
++ pos_cache[count-1] = pstr2 - str;
++ pstr = pstr2 + fromlen;
++ }
++
++ orglen = pstr - str + strlen(pstr);
++
++ /* Allocate memory for the post-replacement string. */
++ if (count > 0) {
++ tolen = strlen(to);
++ retlen = orglen + (tolen - fromlen) * count;
++ } else retlen = orglen;
++ ret = av_malloc(retlen + 1);
++ if (ret == NULL) {
++ goto end_repl_str;
++ }
++
++ if (count == 0) {
++ /* If no matches, then just duplicate the string. */
++ strcpy(ret, str);
++ } else {
++ /* Otherwise, duplicate the string whilst performing
++ * the replacements using the position cache. */
++ pret = ret;
++ memcpy(pret, str, pos_cache[0]);
++ pret += pos_cache[0];
++ for (i = 0; i < count; i++) {
++ memcpy(pret, to, tolen);
++ pret += tolen;
++ pstr = str + pos_cache[i] + fromlen;
++ cpylen = (i == count-1 ? orglen : pos_cache[i+1]) - pos_cache[i] - fromlen;
++ memcpy(pret, pstr, cpylen);
++ pret += cpylen;
++ }
++ ret[retlen] = '\0';
++ }
++
++end_repl_str:
++ /* Free the cache and return the post-replacement string,
++ * which will be NULL in the event of an error. */
++ free(pos_cache);
++ return ret;
++}
++
++static int get_repl_pattern_and_format(const char *i_url, const char *i_marker, char **o_pattern, char **o_format)
++{
++ int ret = -1;
++
++ if (NULL != strstr(i_url, i_marker)) {
++ *o_pattern = av_strdup(i_marker);
++ *o_format = av_strdup("%"PRId64);
++ ret = 0;
++ } else {
++ char *prefix = NULL;
++ char *start = NULL;
++ char *end = NULL;
++ int marker_len = 0;
++ int format_len = 0;
++
++ prefix = av_strdup(i_marker);
++ marker_len = strlen(prefix)-1;
++ prefix[marker_len] = '\0';
++
++ start = strstr(i_url, prefix);
++ if (!start)
++ goto finish;
++ end = strchr(start+1, '$');
++ if (!end)
++ goto finish;
++
++ if (start[marker_len] != '%')
++ goto finish;
++
++ if (end[-1] != 'd')
++ goto finish;
++
++ format_len = end - start - marker_len - 1 + strlen(PRId64);
++ *o_format = av_mallocz(format_len+1);
++ strncpy(*o_format, start + marker_len, end - start - marker_len -1);
++ strcat(*o_format, PRId64);
++
++ *o_pattern = av_mallocz(end - start + 2);
++ strncpy(*o_pattern, start, end - start + 1);
++
++ ret = 0;
++finish:
++ free(prefix);
++ }
++
++ return ret;
++}
++
++static char * get_content_url(xmlNodePtr *baseUrlNodes, int n_baseUrlNodes, xmlChar *rep_id_val, xmlChar *rep_bandwidth_val, xmlChar *val)
++{
++ char *tmp_str = av_mallocz(MAX_URL_SIZE);
++ char *url = NULL;
++ int i = 0;
++
++ for (; i < n_baseUrlNodes; ++i) {
++ if (baseUrlNodes[i] && baseUrlNodes[i]->children && baseUrlNodes[i]->children->type == XML_TEXT_NODE) {
++ xmlChar *text = xmlNodeGetContent(baseUrlNodes[i]->children);
++ if (text) {
++ char *tmp_str_2 = av_mallocz(MAX_URL_SIZE);
++ ff_make_absolute_url(tmp_str_2, MAX_URL_SIZE, tmp_str, text);
++ av_free(tmp_str);
++ tmp_str = tmp_str_2;
++ xmlFree(text);
++ }
++ }
++ }
++
++ url = tmp_str;
++
++ if (val)
++ strcat(tmp_str, (const char*)val);
++
++ if (rep_id_val) {
++ url = repl_str(tmp_str, "$RepresentationID$", (const char*)rep_id_val);
++ av_free(tmp_str);
++ tmp_str = url;
++ }
++
++ if (rep_bandwidth_val && tmp_str){
++ char *pFormat = NULL;
++ char *pPattern = NULL;
++
++ if (0 == get_repl_pattern_and_format(tmp_str, "$Bandwidth$", &pPattern, &pFormat)) {
++ int64_t val = (int64_t)atoll((const char *)rep_bandwidth_val);
++ int size = snprintf(NULL, 0, pFormat, val); // calc needed buffer size
++ if (val > 0) {
++ char *tmp_val = av_mallocz(size + 1);
++ snprintf(tmp_val, size+1, pFormat, val);
++
++ url = repl_str(tmp_str, pPattern, tmp_val);
++ av_free(tmp_val);
++
++ av_free(tmp_str);
++ tmp_str = NULL;
++ }
++ av_free(pFormat);
++ av_free(pPattern);
++ }
++ }
++
++ if (tmp_str != url)
++ av_free(tmp_str);
++
++ return url;
++}
++
++static xmlChar * get_val_from_nodes_tab(xmlNodePtr *nodes, const int n_nodes, const xmlChar *attrName)
++{
++ int i;
++ for (i = 0; i < n_nodes; ++i) {
++ if (nodes[i]) {
++ xmlChar *val = xmlGetProp(nodes[i], attrName);
++ if (val)
++ return val;
++ }
++ }
++ return NULL;
++}
++
++static xmlNodePtr findChildNodeByName(xmlNodePtr rootnode, const xmlChar *nodename)
++{
++ xmlNodePtr node = rootnode;
++ if (node == NULL) {
++ return NULL;
++ }
++
++ node = xmlFirstElementChild(node);
++ while (node != NULL) {
++
++ if (!xmlStrcmp(node->name, nodename)) {
++ return node;
++ }
++ node = xmlNextElementSibling(node);
++ }
++ return NULL;
++}
++
++static enum RepType get_content_type(xmlNodePtr node)
++{
++ enum RepType type = REP_TYPE_UNSPECIFIED;
++ if (node) {
++ int i = 0;
++ while (type == REP_TYPE_UNSPECIFIED && i < 2) {
++ const char *attr = (i == 0) ? "contentType" : "mimeType";
++ xmlChar *val = xmlGetProp(node, attr);
++ if (val) {
++ if (strstr((const char *) val, "video"))
++ type = REP_TYPE_VIDEO;
++ else if (strstr((const char *) val, "audio"))
++ type = REP_TYPE_AUDIO;
++ xmlFree(val);
++ }
++ i += 1;
++ }
++ }
++ return type;
++}
++
++static void fill_timelines(struct representation *rep, xmlNodePtr *nodes, const int n_nodes)
++{
++ int i = 0;
++ for (; i < n_nodes; ++i) {
++ if (nodes[i]) {
++ xmlNodePtr segmentTimelineNode = findChildNodeByName(nodes[i], "SegmentTimeline");
++ if (segmentTimelineNode) {
++ segmentTimelineNode = xmlFirstElementChild(segmentTimelineNode);
++ while (segmentTimelineNode) {
++ if (!xmlStrcmp(segmentTimelineNode->name, (const xmlChar *)"S")) {
++ struct timeline *tml = av_mallocz(sizeof(struct timeline));
++ xmlAttrPtr attr = segmentTimelineNode->properties;
++ while(attr) {
++ xmlChar *val = xmlGetProp(segmentTimelineNode, attr->name);
++
++ if (!xmlStrcmp(attr->name, (const xmlChar *)"t"))
++ tml->t = (int64_t)atoll((const char *)val);
++ else if (!xmlStrcmp(attr->name, (const xmlChar *)"r"))
++ tml->r =(int32_t) atoi((const char *)val);
++ else if (!xmlStrcmp(attr->name, (const xmlChar *)"d"))
++ tml->d = (int64_t)atoll((const char *)val);
++ attr = attr->next;
++ xmlFree(val);
++ }
++
++ dynarray_add(&rep->timelines, &rep->n_timelines, tml);
++ }
++ segmentTimelineNode = xmlNextElementSibling(segmentTimelineNode);
++ }
++ return;
++ }
++ }
++ }
++ return;
++}
++
++static int parse_mainifest(AVFormatContext *s, const char *url, AVIOContext *in)
++{
++ DASHContext *c = s->priv_data;
++ int ret = 0;
++ int close_in = 0;
++ uint8_t *new_url = NULL;
++
++ int64_t filesize = 0;
++ char *buffer = NULL;
++
++ if (!in) {
++ AVDictionary *opts = NULL;
++ close_in = 1;
++ /* This is XML mainfest there is no need to set range header */
++ av_dict_set(&opts, "seekable", "0", 0);
++
++ // broker prior HTTP options that should be consistent across requests
++ av_dict_set(&opts, "user-agent", c->user_agent, 0);
++ av_dict_set(&opts, "cookies", c->cookies, 0);
++ av_dict_set(&opts, "headers", c->headers, 0);
++
++ ret = avio_open2(&in, url, AVIO_FLAG_READ,
++ c->interrupt_callback, &opts);
++ av_dict_free(&opts);
++ if (ret < 0)
++ return ret;
++ }
++
++ if (av_opt_get(in, "location", AV_OPT_SEARCH_CHILDREN, &new_url) >= 0) {
++ c->base_url = av_strdup(new_url);
++ } else {
++ c->base_url = av_strdup(url);
++ }
++
++ filesize = avio_size(in);
++ if (filesize <= 0){
++ filesize = 8 * 1024;
++ }
++
++ buffer = av_mallocz(filesize);
++
++ if (!buffer) {
++ return AVERROR(ENOMEM);
++ }
++
++ filesize = avio_read(in, buffer, filesize);
++ if (filesize > 0) {
++ xmlDoc *doc = NULL;
++ xmlNodePtr root_element = NULL;
++ xmlNodePtr node = NULL;
++ xmlNodePtr periodNode = NULL;
++ xmlNodePtr periodSegmentListNode = NULL;
++ xmlNodePtr mpdBaseUrlNode = NULL;
++ xmlNodePtr periodBaseUrlNode = NULL;
++ xmlNodePtr adaptionSetNode = NULL;
++ xmlAttrPtr attr = NULL;
++ xmlChar *val = NULL;
++ uint32_t perdiodDurationSec = 0;
++ uint32_t perdiodStartSec = 0;
++
++ int32_t audioRepIdx = 0;
++ int32_t videoRepIdx = 0;
++
++ LIBXML_TEST_VERSION
++
++ doc = xmlReadMemory(buffer, filesize, c->base_url, NULL, 0);
++ root_element = xmlDocGetRootElement(doc);
++ node = root_element;
++
++ if (!node) {
++ ret = AVERROR_INVALIDDATA;
++ av_log(s, AV_LOG_ERROR, "Unable to parse '%s' - missing root node\n", url);
++ goto cleanup;
++ }
++
++ if (node->type != XML_ELEMENT_NODE ||
++ xmlStrcmp(node->name, (const xmlChar *)"MPD")) {
++ ret = AVERROR_INVALIDDATA;
++ av_log(s, AV_LOG_ERROR, "Unable to parse '%s' - wrong root node name[%s] type[%d]\n", url, node->name, (int)node->type);
++ goto cleanup;
++ }
++
++ val = xmlGetProp(node, "type");
++ if (!val) {
++ av_log(s, AV_LOG_ERROR, "Unable to parse '%s' - missing type attrib\n", url);
++ ret = AVERROR_INVALIDDATA;
++ goto cleanup;
++ }
++ if (!xmlStrcmp(val, (const xmlChar *)"dynamic"))
++ c->is_live = 1;
++ xmlFree(val);
++
++ attr = node->properties;
++ while(attr) {
++ val = xmlGetProp(node, attr->name);
++
++ if (!xmlStrcmp(attr->name, (const xmlChar *)"availabilityStartTime"))
++ c->availabilityStartTimeSec = GetUTCDateTimeInSec((const char *)val);
++ else if (!xmlStrcmp(attr->name, (const xmlChar *)"publishTime"))
++ c->publishTimeSec = GetUTCDateTimeInSec((const char *)val);
++ else if (!xmlStrcmp(attr->name, (const xmlChar *)"minimumUpdatePeriod"))
++ c->minimumUpdatePeriodSec = GetDurationInSec((const char *)val);
++ else if (!xmlStrcmp(attr->name, (const xmlChar *)"timeShiftBufferDepth"))
++ c->timeShiftBufferDepthSec = GetDurationInSec((const char *)val);
++ else if (!xmlStrcmp(attr->name, (const xmlChar *)"minBufferTime"))
++ c->minBufferTimeSec = GetDurationInSec((const char *)val);
++ else if (!xmlStrcmp(attr->name, (const xmlChar *)"suggestedPresentationDelay"))
++ c->suggestedPresentationDelaySec = GetDurationInSec((const char *)val);
++ else if (!xmlStrcmp(attr->name, (const xmlChar *)"mediaPresentationDuration"))
++ c->mediaPresentationDurationSec = GetDurationInSec((const char *)val);
++
++ attr = attr->next;
++
++ xmlFree(val);
++ }
++
++ mpdBaseUrlNode = findChildNodeByName(node, "BaseURL");
++
++ // at now we can handle only one period, with the longest duration
++ node = xmlFirstElementChild(node);
++ while (node) {
++ if (!xmlStrcmp(node->name, (const xmlChar *)"Period")) {
++ perdiodDurationSec = 0;
++ perdiodStartSec = 0;
++ attr = node->properties;
++ while(attr) {
++ val = xmlGetProp(node, attr->name);
++
++ if (!xmlStrcmp(attr->name, (const xmlChar *)"duration"))
++ perdiodDurationSec = GetDurationInSec((const char *)val);
++ else if (!xmlStrcmp(attr->name, (const xmlChar *)"start"))
++ perdiodStartSec = GetDurationInSec((const char *)val);
++ attr = attr->next;
++
++ xmlFree(val);
++ }
++
++ if ((perdiodDurationSec) >= (c->periodDurationSec)) {
++ periodNode = node;
++ c->periodDurationSec = perdiodDurationSec;
++ c->periodStartSec = perdiodStartSec;
++ if (c->periodStartSec > 0)
++ c->mediaPresentationDurationSec = c->periodDurationSec;
++ }
++ }
++
++ node = xmlNextElementSibling(node);
++ }
++
++ if (!periodNode) {
++ av_log(s, AV_LOG_ERROR, "Unable to parse '%s' - missing Period node\n", url);
++ ret = AVERROR_INVALIDDATA;
++ goto cleanup;
++ }
++
++ // explore AdaptationSet
++ adaptionSetNode = xmlFirstElementChild(periodNode);
++ while (adaptionSetNode) {
++ if (!xmlStrcmp(adaptionSetNode->name, (const xmlChar *)"BaseURL")) {
++ periodBaseUrlNode = adaptionSetNode;
++ } else if (!xmlStrcmp(adaptionSetNode->name, (const xmlChar *)"SegmentList")) {
++ periodSegmentListNode = adaptionSetNode;
++ } else if (!xmlStrcmp(adaptionSetNode->name, (const xmlChar *)"AdaptationSet")) {
++ xmlNodePtr segmentTemplateNode = NULL;
++ xmlNodePtr contentComponentNode = NULL;
++ xmlNodePtr adaptionSetBaseUrlNode = NULL;
++ xmlNodePtr adaptionSetSegmentListNode = NULL;
++
++ node = xmlFirstElementChild(adaptionSetNode);
++ while (node) {
++ if (!xmlStrcmp(node->name, (const xmlChar *)"SegmentTemplate")) {
++ segmentTemplateNode = node;
++ } else if (!xmlStrcmp(node->name, (const xmlChar *)"ContentComponent")) {
++ contentComponentNode = node;
++ } else if (!xmlStrcmp(node->name, (const xmlChar *)"BaseURL")) {
++ adaptionSetBaseUrlNode = node;
++ } else if (!xmlStrcmp(node->name, (const xmlChar *)"SegmentList")) {
++ adaptionSetSegmentListNode = node;
++ } else if (!xmlStrcmp(node->name, (const xmlChar *)"Representation")) {
++ xmlNodePtr representationNode = node;
++ xmlChar *rep_id_val = xmlGetProp(representationNode, "id");
++ xmlChar *rep_bandwidth_val = xmlGetProp(representationNode, "bandwidth");
++ enum RepType type = REP_TYPE_UNSPECIFIED;
++
++
++ // try get information from representation
++ if (type == REP_TYPE_UNSPECIFIED)
++ type = get_content_type(representationNode);
++ // try get information from contentComponen
++ if (type == REP_TYPE_UNSPECIFIED)
++ type = get_content_type(contentComponentNode);
++ // try get information from adaption set
++ if (type == REP_TYPE_UNSPECIFIED)
++ type = get_content_type(adaptionSetNode);
++
++ if (type == REP_TYPE_UNSPECIFIED) {
++ av_log(s, AV_LOG_VERBOSE, "Parsing '%s' - skipp not supported representation type\n", url);
++ } else if ( (type == REP_TYPE_VIDEO && ((c->video_rep_index < 0 && !c->cur_video) || videoRepIdx == (int32_t)c->video_rep_index )) ||
++ (type == REP_TYPE_AUDIO && ((c->audio_rep_index < 0 && !c->cur_audio) || audioRepIdx == (int32_t)c->audio_rep_index )) ) {
++
++ // convert selected representation to our internal struct
++ struct representation *rep = av_mallocz(sizeof(struct representation));
++ xmlNodePtr representationSegmentTemplateNode = findChildNodeByName(representationNode, "SegmentTemplate");
++ xmlNodePtr representationBaseUrlNode = findChildNodeByName(representationNode, "BaseURL");
++ xmlNodePtr representationSegmentListNode = findChildNodeByName(representationNode, "SegmentList");
++ reset_packet(&rep->pkt);
++ if (representationSegmentTemplateNode || segmentTemplateNode) {
++
++ xmlNodePtr segmentTemplatesTab[2] = {representationSegmentTemplateNode, segmentTemplateNode};
++ xmlChar *duration_val = get_val_from_nodes_tab(segmentTemplatesTab, 2, "duration");
++ xmlChar *startNumber_val = get_val_from_nodes_tab(segmentTemplatesTab, 2, "startNumber");
++ xmlChar *timescale_val = get_val_from_nodes_tab(segmentTemplatesTab, 2, "timescale");
++
++ xmlChar *initialization_val = get_val_from_nodes_tab(segmentTemplatesTab, 2, "initialization");
++ xmlChar *media_val = get_val_from_nodes_tab(segmentTemplatesTab, 2, "media");
++
++ xmlNodePtr baseUrlNodes[4] = {mpdBaseUrlNode, periodBaseUrlNode, adaptionSetBaseUrlNode, representationBaseUrlNode};
++
++ if (initialization_val) {
++ rep->init_section = av_mallocz(sizeof(struct segment));
++ rep->init_section->url = get_content_url(baseUrlNodes, 4, rep_id_val, rep_bandwidth_val, initialization_val);
++ rep->init_section->size = -1;
++ xmlFree(initialization_val);
++ }
++
++ if (media_val) {
++ char *tmp_str = get_content_url(baseUrlNodes, 4, rep_id_val, rep_bandwidth_val, media_val);
++ rep->tmp_url_type = TMP_URL_TYPE_UNSPECIFIED;
++ if (tmp_str) {
++ rep->url_template = tmp_str;
++
++ if (strstr(tmp_str, "$Number") &&
++ 0 == get_repl_pattern_and_format(tmp_str, "$Number$", &(rep->url_template_pattern), &(rep->url_template_format))) {
++ // A URL template is provided from which clients build a chunk list where the chunk URLs include chunk numbers (like index numbers).
++ rep->tmp_url_type = TMP_URL_TYPE_NUMBER; // (Chunk) Number-Based.
++ } else if (strstr(tmp_str, "$Time") &&
++ 0 == get_repl_pattern_and_format(tmp_str, "$Time$", &(rep->url_template_pattern), &(rep->url_template_format))) {
++ // A URL template is provided from which clients build a chunk list where the chunk URLs include chunk start times.
++ rep->tmp_url_type = TMP_URL_TYPE_TIME; // (CTime-Based.
++ }
++ }
++ xmlFree(media_val);
++ }
++
++ if (duration_val) {
++ rep->segmentDuration = (int64_t) atoll((const char *)duration_val);
++ xmlFree(duration_val);
++ }
++
++ if (timescale_val) {
++ rep->segmentTimescalce = (int64_t) atoll((const char *)timescale_val);
++ xmlFree(timescale_val);
++ }
++
++ if (startNumber_val) {
++ rep->first_seq_no = (int64_t) atoll((const char *)startNumber_val);
++ xmlFree(startNumber_val);
++ }
++
++ fill_timelines(rep, segmentTemplatesTab, 2);
++ } else if (representationBaseUrlNode && !representationSegmentListNode) {
++ xmlNodePtr baseUrlNodes[4] = {mpdBaseUrlNode, periodBaseUrlNode, adaptionSetBaseUrlNode, representationBaseUrlNode};
++ struct segment *seg = av_mallocz(sizeof(struct segment));
++ seg->url = get_content_url(baseUrlNodes, 4, rep_id_val, rep_bandwidth_val, NULL);
++ seg->size = -1;
++ dynarray_add(&rep->segments, &rep->n_segments, seg);
++ } else if (representationSegmentListNode) {
++ // TODO: https://www.brendanlong.com/the-structure-of-an-mpeg-dash-mpd.html
++ // http://www-itec.uni-klu.ac.at/dash/ddash/mpdGenerator.php?segmentlength=15&type=full
++ xmlNodePtr segmentUrlNode = NULL;
++ xmlNodePtr segmentListTab[3] = {representationSegmentListNode, adaptionSetSegmentListNode, periodSegmentListNode};
++ xmlChar *duration_val = get_val_from_nodes_tab(segmentListTab, 3, "duration");
++ xmlChar *startNumber_val = get_val_from_nodes_tab(segmentListTab, 3, "startNumber");
++ xmlChar *timescale_val = get_val_from_nodes_tab(segmentListTab, 3, "timescale");
++
++ if (duration_val) {
++ rep->segmentDuration = (int64_t) atoll((const char *)duration_val);
++ xmlFree(duration_val);
++ }
++
++ if (timescale_val) {
++ rep->segmentTimescalce = (int64_t) atoll((const char *)timescale_val);
++ xmlFree(timescale_val);
++ }
++
++ if (startNumber_val) {
++ rep->start_number = (int64_t) atoll((const char *)startNumber_val);
++ xmlFree(startNumber_val);
++ }
++
++ segmentUrlNode = xmlFirstElementChild(representationSegmentListNode);
++ while (segmentUrlNode) {
++ if (!xmlStrcmp(segmentUrlNode->name, (const xmlChar *)"Initialization")) {
++ xmlChar *initialization_val = xmlGetProp(segmentUrlNode, "sourceURL");
++ if (initialization_val) {
++ xmlNodePtr baseUrlNodes[4] = {mpdBaseUrlNode, periodBaseUrlNode, adaptionSetBaseUrlNode, representationBaseUrlNode};
++ rep->init_section = av_mallocz(sizeof(struct segment));
++ rep->init_section->url = get_content_url(baseUrlNodes, 4, rep_id_val, rep_bandwidth_val, initialization_val);
++ rep->init_section->size = -1;
++ xmlFree(initialization_val);
++ }
++ } else if (!xmlStrcmp(segmentUrlNode->name, (const xmlChar *)"SegmentURL")) {
++ xmlChar *media_val = xmlGetProp(segmentUrlNode, "media");
++ if (media_val) {
++ xmlNodePtr baseUrlNodes[4] = {mpdBaseUrlNode, periodBaseUrlNode, adaptionSetBaseUrlNode, representationBaseUrlNode};
++ struct segment *seg = av_mallocz(sizeof(struct segment));
++ seg->url = get_content_url(baseUrlNodes, 4, rep_id_val, rep_bandwidth_val, media_val);
++ seg->size = -1;
++ dynarray_add(&rep->segments, &rep->n_segments, seg);
++ xmlFree(media_val);
++ }
++ }
++ segmentUrlNode = xmlNextElementSibling(segmentUrlNode);
++ }
++
++ fill_timelines(rep, segmentListTab, 2);
++ } else {
++ free_representation(rep);
++ rep = NULL;
++ av_log(s, AV_LOG_ERROR, "Unknown format of Representation node id[%s] \n", (const char *)rep_id_val);
++ }
++
++ if (rep) {
++ if (rep->segmentDuration > 0 && rep->segmentTimescalce == 0)
++ rep->segmentTimescalce = 1;
++
++ if (type == REP_TYPE_VIDEO) {
++ rep->rep_idx = videoRepIdx;
++ c->cur_video = rep;
++ }
++ else {
++ rep->rep_idx = audioRepIdx;
++ c->cur_audio = rep;
++ }
++ }
++ }
++
++ if (type == REP_TYPE_VIDEO) {
++ videoRepIdx += 1;
++ } if (type == REP_TYPE_AUDIO) {
++ audioRepIdx += 1;
++ }
++
++ if (rep_id_val)
++ xmlFree(rep_id_val);
++
++ if (rep_bandwidth_val)
++ xmlFree(rep_bandwidth_val);
++ }
++ node = xmlNextElementSibling(node);
++ }
++ }
++ adaptionSetNode = xmlNextElementSibling(adaptionSetNode);
++ }
++
++ if (c->cur_video) {
++ c->cur_video->rep_count = videoRepIdx;
++ c->cur_video->fix_multiple_stsd_order = 1;
++
++ av_log(s, AV_LOG_VERBOSE, "rep_idx[%d]\n", (int)c->cur_video->rep_idx);
++ av_log(s, AV_LOG_VERBOSE, "rep_count[%d]\n", (int)videoRepIdx);
++ }
++
++ if (c->cur_audio) {
++ c->cur_audio->rep_count = audioRepIdx;
++ }
++
++cleanup:
++ /*free the document */
++ xmlFreeDoc(doc);
++ xmlCleanupParser();
++
++ } else {
++ av_log(s, AV_LOG_ERROR, "Unable to read to offset '%s'\n", url);
++ ret = AVERROR_INVALIDDATA;
++ }
++
++ av_free(new_url);
++ av_free(buffer);
++ if (close_in) {
++ avio_close(in);
++ }
++ return ret;
++}
++
++/////////////////////////////////////////////////////////////////////////////
++/////////////////////////////////////////////////////////////////////////////
++static int64_t get_segment_start_time_based_on_timeline(struct representation *pls, int64_t cur_seq_no)
++{
++ int64_t startTime = 0;
++ if (pls->n_timelines) {
++ int64_t i = 0;
++ int64_t j = 0;
++ int64_t num = 0;
++
++ for (i=0; i<pls->n_timelines; ++i) {
++ if (pls->timelines[i]->t > 0) {
++ startTime = pls->timelines[i]->t;
++ }
++
++ if (num == cur_seq_no)
++ goto finish;
++
++ startTime += pls->timelines[i]->d;
++
++ for (j = 0; j < pls->timelines[i]->r; ++j) {
++ num += 1;
++ if (num == cur_seq_no)
++ goto finish;
++ startTime += pls->timelines[i]->d;
++ }
++ num += 1;
++
++ }
++ }
++finish:
++ return startTime;
++}
++
++static int64_t calc_next_seg_no_from_timelines(struct representation *pls, int64_t currentTime)
++{
++ int64_t i = 0;
++ int64_t j = 0;
++ int64_t num = 0;
++ int64_t startTime = 0;
++
++ for (i=0; i<pls->n_timelines; ++i) {
++ if (pls->timelines[i]->t > 0) {
++ startTime = pls->timelines[i]->t;
++ }
++
++ if (startTime > currentTime)
++ goto finish;
++
++ startTime += pls->timelines[i]->d;
++
++ for (j = 0; j < pls->timelines[i]->r; ++j) {
++ num += 1;
++ if (startTime > currentTime)
++ goto finish;
++ startTime += pls->timelines[i]->d;
++ }
++ num += 1;
++ }
++
++ return -1;
++
++finish:
++ return num;
++}
++
++static int64_t calc_max_seg_no(struct representation *pls, DASHContext *c);
++
++static void move_timelines(struct representation *rep_src, struct representation *rep_dest, DASHContext *c)
++{
++ if (rep_dest != NULL && rep_src != NULL) {
++ free_timelines_list(rep_dest);
++ rep_dest->timelines = rep_src->timelines;
++ rep_dest->n_timelines = rep_src->n_timelines;
++ rep_dest->first_seq_no = rep_src->first_seq_no;
++
++ rep_dest->last_seq_no = calc_max_seg_no(rep_dest, c);
++
++ rep_src->timelines = NULL;
++ rep_src->n_timelines = 0;
++ rep_dest->cur_seq_no = rep_src->cur_seq_no;
++ }
++}
++
++static void move_segments(struct representation *rep_src, struct representation *rep_dest, DASHContext *c)
++{
++ if (rep_dest != NULL && rep_src != NULL) {
++
++ free_segment_list(rep_dest);
++
++ if (rep_src->start_number > (rep_dest->start_number + rep_dest->cur_seq_no))
++ rep_dest->cur_seq_no = 0;
++ else
++ rep_dest->cur_seq_no = rep_src->n_segments - ((rep_src->start_number + rep_src->n_segments) - (rep_dest->start_number + rep_dest->cur_seq_no));
++
++ rep_dest->segments = rep_src->segments;
++ rep_dest->n_segments = rep_src->n_segments;
++ rep_dest->start_number = rep_src->start_number;
++
++ rep_dest->last_seq_no = calc_max_seg_no(rep_dest, c);
++
++ rep_src->segments = NULL;
++ rep_src->n_segments = 0;
++ }
++}
++
++static int refresh_manifest(AVFormatContext *s)
++{
++ int ret = 0;
++ DASHContext *c = s->priv_data;
++
++ // save current context
++ struct representation *cur_video = c->cur_video;
++ struct representation *cur_audio = c->cur_audio;
++ char *base_url = c->base_url;
++
++ c->base_url = NULL;
++ c->cur_video = NULL;
++ c->cur_audio = NULL;
++
++ ret = parse_mainifest(s, s->filename, NULL);
++ if (ret != 0)
++ goto finish;
++
++ if (cur_video && cur_video->timelines || cur_audio && cur_audio->timelines)
++ {
++ // calc current time
++ int64_t currentVideoTime = 0;
++ int64_t currentAudioTime = 0;
++
++ if (cur_video && cur_video->timelines)
++ currentVideoTime = get_segment_start_time_based_on_timeline(cur_video, cur_video->cur_seq_no) / cur_video->segmentTimescalce;
++
++ if (cur_audio && cur_audio->timelines)
++ currentAudioTime = get_segment_start_time_based_on_timeline(cur_audio, cur_audio->cur_seq_no) / cur_audio->segmentTimescalce;
++
++ // update segments
++ if (cur_video && cur_video->timelines) {
++ c->cur_video->cur_seq_no = calc_next_seg_no_from_timelines(c->cur_video, currentVideoTime * cur_video->segmentTimescalce - 1);
++ if (c->cur_video->cur_seq_no >= 0)
++ move_timelines(c->cur_video, cur_video, c);
++ }
++
++ if (cur_audio && cur_audio->timelines) {
++ c->cur_audio->cur_seq_no = calc_next_seg_no_from_timelines(c->cur_audio, currentAudioTime * cur_audio->segmentTimescalce - 1);
++ if (c->cur_audio->cur_seq_no >= 0)
++ move_timelines(c->cur_audio, cur_audio, c);
++ }
++ }
++
++ if (cur_video && cur_video->segments) {
++ move_segments(c->cur_video, cur_video, c);
++ }
++
++ if (cur_audio && cur_audio->segments) {
++ move_segments(c->cur_audio, cur_audio, c);
++ }
++
++finish:
++ // restore context
++ if (c->base_url)
++ av_free(base_url);
++ else
++ c->base_url = base_url;
++
++ if (c->cur_audio)
++ free_representation(c->cur_audio);
++
++ if (c->cur_video)
++ free_representation(c->cur_video);
++
++ c->cur_audio = cur_audio;
++ c->cur_video = cur_video;
++
++ return ret;
++}
++
++
++static int64_t calc_cur_seg_no(struct representation *pls, DASHContext *c)
++{
++ int64_t num = 0;
++ if (c->is_live) {
++ if (pls->n_segments) {
++ // handle segment number here
++ num = pls->first_seq_no;
++ } else if (pls->n_timelines) {
++ int64_t startTimeOffset = get_segment_start_time_based_on_timeline(pls, 0xFFFFFFFF) - pls->timelines[pls->first_seq_no]->t; // total duration of playlist
++ if (startTimeOffset < 60*pls->segmentTimescalce)
++ startTimeOffset = 0;
++ else
++ startTimeOffset = startTimeOffset - 60*pls->segmentTimescalce;
++
++ num = calc_next_seg_no_from_timelines(pls, pls->timelines[pls->first_seq_no]->t + startTimeOffset);
++ if (num == -1)
++ num = pls->first_seq_no;
++ }
++ else {
++ num = pls->first_seq_no + (((GetCurrentTimeInSec() - c->availabilityStartTimeSec) - c->presentationDelaySec) * pls->segmentTimescalce) / pls->segmentDuration;
++ }
++ } else {
++ num = pls->first_seq_no;
++ }
++ return num;
++}
++
++static int64_t calc_min_seg_no(struct representation *pls, DASHContext *c)
++{
++ int64_t num = 0;
++ if (c->is_live && pls->segmentDuration) {
++ num = pls->first_seq_no + (((GetCurrentTimeInSec() - c->availabilityStartTimeSec) - c->timeShiftBufferDepthSec) * pls->segmentTimescalce) / pls->segmentDuration;
++ } else {
++ num = pls->first_seq_no;
++ }
++ return num;
++}
++
++static int64_t calc_max_seg_no(struct representation *pls, DASHContext *c)
++{
++ int64_t num = 0;
++
++ if (pls->n_segments) {
++ num = pls->first_seq_no + pls->n_segments - 1;
++ } else if (pls->n_timelines) {
++ int i = 0;
++ num = pls->first_seq_no + pls->n_timelines - 1;
++ for (i=0; i<pls->n_timelines; ++i) {
++ num += pls->timelines[i]->r;
++ }
++ }
++ else if (c->is_live) {
++ num = pls->first_seq_no + (((GetCurrentTimeInSec() - c->availabilityStartTimeSec)) * pls->segmentTimescalce) / pls->segmentDuration;
++ }
++ else {
++ num = pls->first_seq_no + (c->mediaPresentationDurationSec * pls->segmentTimescalce) / pls->segmentDuration;
++ }
++
++ return num;
++}
++
++static struct segment *get_current_segment(struct representation *pls)
++{
++ struct segment *seg = NULL;
++ DASHContext *c = pls->parent->priv_data;
++
++ while (!ff_check_interrupt(c->interrupt_callback) && pls->n_segments > 0) {
++ if (pls->cur_seq_no < pls->n_segments) {
++ struct segment *seg_ptr = pls->segments[pls->cur_seq_no];
++ seg = av_mallocz(sizeof(struct segment));
++ seg->url = av_strdup(seg_ptr->url);
++ seg->size = seg_ptr->size;
++ seg->url_offset = seg_ptr->url_offset;
++ return seg;
++ } else if (c->is_live) {
++ sleep(2);
++ refresh_manifest(pls->parent);
++ } else
++ break;
++ }
++
++ if (c->is_live) {
++ while (!ff_check_interrupt(c->interrupt_callback)) {
++ int64_t min_seq_no = calc_min_seg_no(pls, c);
++ int64_t max_seq_no = calc_max_seg_no(pls, c);
++
++ if (pls->cur_seq_no <= min_seq_no) {
++ av_log(pls->parent, AV_LOG_VERBOSE, "%s to old segment: cur[%"PRId64"] min[%"PRId64"] max[%"PRId64"], playlist %d\n", __FUNCTION__, (int64_t)pls->cur_seq_no, min_seq_no, max_seq_no, (int)pls->rep_idx);
++ if (c->is_live && (pls->timelines || pls->segments)) {
++ refresh_manifest(pls->parent);
++ }
++ pls->cur_seq_no = calc_cur_seg_no(pls, c);
++ } else if (pls->cur_seq_no > max_seq_no) {
++ av_log(pls->parent, AV_LOG_VERBOSE, "%s wait for new segment: min[%"PRId64"] max[%"PRId64"], playlist %d\n", __FUNCTION__, min_seq_no, max_seq_no, (int)pls->rep_idx);
++ sleep(2);
++ if (c->is_live && (pls->timelines || pls->segments)) {
++ refresh_manifest(pls->parent);
++ }
++ continue;
++ }
++ break;
++ }
++ seg = av_mallocz(sizeof(struct segment));
++ } else if (pls->cur_seq_no <= pls->last_seq_no) {
++ seg = av_mallocz(sizeof(struct segment));
++ }
++
++ if (seg) {
++ if (pls->tmp_url_type != TMP_URL_TYPE_UNSPECIFIED) {
++ int64_t val = pls->tmp_url_type == TMP_URL_TYPE_NUMBER ? pls->cur_seq_no : get_segment_start_time_based_on_timeline(pls, pls->cur_seq_no);
++ int size = snprintf(NULL, 0, pls->url_template_format, val); // calc needed buffer size
++
++ if (size > 0) {
++ char *tmp_val = av_mallocz(size + 1);
++ snprintf(tmp_val, size+1, pls->url_template_format, val);
++ seg->url = repl_str(pls->url_template, pls->url_template_pattern, tmp_val);
++ av_free(tmp_val);
++ }
++ }
++
++ if (!seg->url) {
++ av_log(pls->parent, AV_LOG_ERROR, "Unable to resolve template url '%s'\n", pls->url_template);
++ seg->url = av_strdup(pls->url_template);
++ }
++ seg->size = -1;
++ }
++
++ return seg;
++}
++
++enum ReadFromURLMode {
++ READ_NORMAL,
++ READ_COMPLETE,
++};
++
++static int read_from_url(struct representation *pls, struct segment *seg,
++ uint8_t *buf, int buf_size,
++ enum ReadFromURLMode mode)
++{
++ int ret;
++
++ /* limit read if the segment was only a part of a file */
++ if (seg->size >= 0)
++ buf_size = FFMIN(buf_size, pls->cur_seg_size - pls->cur_seg_offset);
++
++ if (mode == READ_COMPLETE) {
++ ret = avio_read(pls->input, buf, buf_size);
++ if (ret != buf_size)
++ av_log(NULL, AV_LOG_ERROR, "Could not read complete segment buf_size[%d] ret[%d].\n", buf_size, ret);
++ } else if (buf_size > 0)
++ ret = avio_read(pls->input, buf, buf_size);
++ else
++ ret = AVERROR_EOF;
++
++ if (ret > 0)
++ pls->cur_seg_offset += ret;
++
++ return ret;
++}
++
++static int open_input(DASHContext *c, struct representation *pls, struct segment *seg)
++{
++ AVDictionary *opts = NULL;
++ char url[MAX_URL_SIZE];
++ int ret;
++
++ // broker prior HTTP options that should be consistent across requests
++ av_dict_set(&opts, "user-agent", c->user_agent, 0);
++ av_dict_set(&opts, "cookies", c->cookies, 0);
++ av_dict_set(&opts, "headers", c->headers, 0);
++ if (c->is_live) {
++ av_dict_set(&opts, "seekable", "0", 0);
++ }
++
++ if (seg->size >= 0) {
++ /* try to restrict the HTTP request to the part we want
++ * (if this is in fact a HTTP request) */
++ av_dict_set_int(&opts, "offset", seg->url_offset, 0);
++ av_dict_set_int(&opts, "end_offset", seg->url_offset + seg->size, 0);
++ }
++
++ ff_make_absolute_url(url, MAX_URL_SIZE, c->base_url, seg->url);
++
++ av_log(pls->parent, AV_LOG_VERBOSE, "DASH request for url '%s', offset %"PRId64", playlist %d\n",
++ url, seg->url_offset, pls->rep_idx);
++
++ ret = open_url(pls->parent, &pls->input, url, c->avio_opts, opts, NULL);
++ if (ret < 0) {
++ goto cleanup;
++ }
++
++ /* Seek to the requested position. If this was a HTTP request, the offset
++ * should already be where want it to, but this allows e.g. local testing
++ * without a HTTP server. */
++ if (ret == 0 && seg->url_offset) {
++ int64_t seekret = avio_seek(pls->input, seg->url_offset, SEEK_SET);
++ if (seekret < 0) {
++ av_log(pls->parent, AV_LOG_ERROR, "Unable to seek to offset %"PRId64" of DASH segment '%s'\n", seg->url_offset, seg->url);
++ ret = (int) seekret;
++ ff_format_io_close(pls->parent, &pls->input);
++ }
++ }
++
++cleanup:
++ av_dict_free(&opts);
++ pls->cur_seg_offset = 0;
++ pls->cur_seg_size = seg->size;
++ return ret;
++}
++
++static int update_init_section(struct representation *pls)
++{
++ static const int max_init_section_size = 1024*1024;
++ DASHContext *c = pls->parent->priv_data;
++ int64_t sec_size;
++ int64_t urlsize;
++ int ret;
++
++ /* read init section only once per representation */
++ if (!pls->init_section || pls->init_sec_buf) {
++ return 0;
++ }
++
++ ret = open_input(c, pls, pls->init_section);
++ if (ret < 0) {
++ av_log(pls->parent, AV_LOG_WARNING,
++ "Failed to open an initialization section in playlist %d\n",
++ pls->rep_idx);
++ return ret;
++ }
++
++ if (pls->init_section->size >= 0)
++ sec_size = pls->init_section->size;
++ else if ((urlsize = avio_size(pls->input)) >= 0)
++ sec_size = urlsize;
++ else
++ sec_size = max_init_section_size;
++
++ av_log(pls->parent, AV_LOG_DEBUG,
++ "Downloading an initialization section of size %"PRId64"\n",
++ sec_size);
++
++ sec_size = FFMIN(sec_size, max_init_section_size);
++
++ av_fast_malloc(&pls->init_sec_buf, &pls->init_sec_buf_size, sec_size);
++
++ ret = read_from_url(pls, pls->init_section, pls->init_sec_buf,
++ pls->init_sec_buf_size, READ_COMPLETE);
++ ff_format_io_close(pls->parent, &pls->input);
++
++ if (ret < 0)
++ return ret;
++ if (pls->fix_multiple_stsd_order && pls->rep_idx > 0) {
++ uint8_t **stsd_entries = NULL;
++ int *stsd_entries_size = NULL;
++
++ int i = 4;
++ while(i <= ret-4) {
++ // find start stsd atom
++ if (0 == memcmp(pls->init_sec_buf + i, "stsd", 4)) {
++ // 1B version
++ // 3B flags
++ // 4B num of entries
++ int stsd_first_offset = i + 8;
++ int stsd_offset = 0;
++ int j = 0;
++ uint32_t stsd_count = AV_RB32(pls->init_sec_buf + stsd_first_offset);
++ stsd_first_offset += 4;
++ if (stsd_count != pls->rep_count) {
++ i += 1;
++ continue;
++ }
++
++ // find all stsd entries
++ stsd_entries = av_mallocz_array(stsd_count, sizeof(*stsd_entries));
++ stsd_entries_size = av_mallocz_array(stsd_count, sizeof(*stsd_entries_size));
++ for (j=0; j<stsd_count; ++j) {
++ // 4B - size
++ // 4B - format
++ stsd_entries_size[j] = AV_RB32(pls->init_sec_buf + stsd_first_offset + stsd_offset);
++ stsd_entries[j] = av_malloc(stsd_entries_size[j]);
++ memcpy(stsd_entries[j], pls->init_sec_buf + stsd_first_offset + stsd_offset, stsd_entries_size[j]);
++ stsd_offset += stsd_entries_size[j];
++ }
++
++ // reorder stsd entries
++ // as first put stsd entry for current representation
++ j = pls->rep_idx;
++ stsd_offset = stsd_first_offset;
++ memcpy(pls->init_sec_buf + stsd_offset, stsd_entries[j], stsd_entries_size[j]);
++ stsd_offset += stsd_entries_size[j];
++
++ for (j=0; j<stsd_count; ++j) {
++ if (j != pls->rep_idx) {
++ memcpy(pls->init_sec_buf + stsd_offset, stsd_entries[j], stsd_entries_size[j]);
++ stsd_offset += stsd_entries_size[j];
++ }
++ av_free(stsd_entries[j]);
++ }
++
++ av_freep(&stsd_entries);
++ av_freep(&stsd_entries_size);
++ break;
++ }
++ i += 1;
++ }
++ }
++
++ av_log(pls->parent, AV_LOG_TRACE, "%s pls[%p] init section size[%d]\n", __FUNCTION__, pls, (int)ret);
++ pls->init_sec_data_len = ret;
++ pls->init_sec_buf_read_offset = 0;
++
++ return 0;
++}
++
++static int64_t seek_data(void *opaque, int64_t offset, int whence)
++{
++ struct representation *v = opaque;
++ if (v->n_segments == 1 && 0 == v->init_sec_data_len) {
++ return avio_seek(v->input, offset, whence);
++ }
++
++ return AVERROR(ENOSYS);
++}
++
++static int read_data(void *opaque, uint8_t *buf, int buf_size)
++{
++ struct representation *v = opaque;
++ DASHContext *c = v->parent->priv_data;
++ int ret = 0;
++restart:
++ if (!v->input) {
++ free_segment(&v->cur_seg);
++ v->cur_seg = get_current_segment(v);
++ if (!v->cur_seg) {
++ ret = AVERROR_EOF;
++ goto end;
++ }
++
++ /* load/update Media Initialization Section, if any */
++ ret = update_init_section(v);
++ if (ret)
++ goto end;
++
++ ret = open_input(c, v, v->cur_seg);
++ if (ret < 0) {
++ if (ff_check_interrupt(c->interrupt_callback)) {
++ goto end;
++ ret = AVERROR_EXIT;
++ }
++ av_log(v->parent, AV_LOG_WARNING, "Failed to open segment of playlist %d\n",
++ v->rep_idx);
++ if (c->is_live && (v->timelines || v->segments)) {
++ // refresh_manifest(v->parent);
++ sleep(1);
++ }
++ else {
++ v->cur_seq_no += 1;
++ }
++ goto restart;
++ }
++ }
++
++ if (v->init_sec_buf_read_offset < v->init_sec_data_len) {
++ /* Push init section out first before first actual segment */
++ int copy_size = FFMIN(v->init_sec_data_len - v->init_sec_buf_read_offset, buf_size);
++ memcpy(buf, v->init_sec_buf, copy_size);
++ v->init_sec_buf_read_offset += copy_size;
++ ret = copy_size;
++ goto end;
++ }
++
++ if (!v->cur_seg) {
++ v->cur_seg = get_current_segment(v);
++ }
++
++ if (!v->cur_seg) {
++ ret = AVERROR_EOF;
++ goto end;
++ }
++
++ ret = read_from_url(v, v->cur_seg, buf, buf_size, READ_NORMAL);
++ if (ret > 0)
++ goto end;
++
++ /* This is needed to free indexes from previously processed segments.
++ * Maybe we should restart context every few segments?
++ */
++ if (!v->is_restart_needed)
++ v->cur_seq_no += 1;
++ v->is_restart_needed = 1;
++
++ // ff_format_io_close(v->parent, &v->input);
++ // v->cur_seq_no += 1;
++ // goto restart;
++end:
++ return ret;
++}
++
++static int save_avio_options(AVFormatContext *s)
++{
++ DASHContext *c = s->priv_data;
++ const char *opts[] = { "headers", "user_agent", "user-agent", "cookies", NULL }, **opt = opts;
++ uint8_t *buf = NULL;
++ int ret = 0;
++
++ while (*opt) {
++ if (av_opt_get(s->pb, *opt, AV_OPT_SEARCH_CHILDREN, &buf) >= 0) {
++ if (buf != NULL && buf[0] != '\0') {
++ ret = av_dict_set(&c->avio_opts, *opt, buf,
++ AV_DICT_DONT_STRDUP_VAL);
++ if (ret < 0)
++ return ret;
++ }
++ }
++ opt++;
++ }
++
++ return ret;
++}
++
++static int nested_io_open(AVFormatContext *s, AVIOContext **pb, const char *url,
++ int flags, AVDictionary **opts)
++{
++ av_log(s, AV_LOG_ERROR,
++ "A DASH playlist item '%s' referred to an external file '%s'. "
++ "Opening this file was forbidden for security reasons\n",
++ s->filename, url);
++ return AVERROR(EPERM);
++}
++
++static int reopen_demux_for_component(AVFormatContext *s, struct representation *pls)
++{
++ DASHContext *c = s->priv_data;
++ AVInputFormat *in_fmt = NULL;
++ AVDictionary *in_fmt_opts = NULL;
++ uint8_t *avio_ctx_buffer = NULL;
++ int ret = 0;
++
++ if (pls->ctx) {
++ /* note: the internal buffer could have changed, and be != avio_ctx_buffer */
++ av_freep(&pls->pb.buffer);
++ memset(&pls->pb, 0x00, sizeof(AVIOContext));
++
++ pls->ctx->pb = NULL;
++ avformat_close_input(&pls->ctx);
++ pls->ctx = NULL;
++ }
++
++ if (!(pls->ctx = avformat_alloc_context())) {
++ ret = AVERROR(ENOMEM);
++ goto fail;
++ }
++
++ avio_ctx_buffer = av_malloc(INITIAL_BUFFER_SIZE);
++ if (!avio_ctx_buffer ){
++ ret = AVERROR(ENOMEM);
++ avformat_free_context(pls->ctx);
++ pls->ctx = NULL;
++ goto fail;
++ }
++
++ if (c->is_live) {
++ ffio_init_context(&pls->pb, avio_ctx_buffer , INITIAL_BUFFER_SIZE, 0, pls,
++ read_data, NULL, NULL);
++ } else {
++ ffio_init_context(&pls->pb, avio_ctx_buffer , INITIAL_BUFFER_SIZE, 0, pls,
++ read_data, NULL, seek_data);
++ }
++
++ pls->pb.seekable = 0;
++
++ if ((ret = ff_copy_whiteblacklists(pls->ctx, s)) < 0)
++ goto fail;
++
++ pls->ctx->flags = AVFMT_FLAG_CUSTOM_IO;
++ pls->ctx->probesize = 1024 * 4;
++ pls->ctx->max_analyze_duration = 4 * AV_TIME_BASE;
++ /////////////////
++#if 1
++ ret = av_probe_input_buffer(&pls->pb, &in_fmt, "",
++ NULL, 0, 0);
++ if (ret < 0) {
++ av_log(s, AV_LOG_ERROR, "Error when loading first segment, playlist %d\n", (int)pls->rep_idx);
++ avformat_free_context(pls->ctx);
++ pls->ctx = NULL;
++ goto fail;
++ }
++#else
++ in_fmt = av_find_input_format("mp4");
++#endif
++
++ pls->ctx->pb = &pls->pb;
++ pls->ctx->io_open = nested_io_open;
++ ////////////////////
++
++ // provide additional information from mpd if available
++ // av_dict_set(&in_fmt_opts, "video_size", "640x480", 0);
++ // av_dict_set(&in_fmt_opts, "pixel_format", "rgb24", 0);
++ ret = avformat_open_input(&pls->ctx, "", in_fmt, &in_fmt_opts); //pls->init_section->url
++ av_dict_free(&in_fmt_opts);
++ if (ret < 0)
++ goto fail;
++
++ if (pls->n_segments == 1) {
++ //pls->ctx->ctx_flags &= ~AVFMTCTX_NOHEADER;
++ ret = avformat_find_stream_info(pls->ctx, NULL);
++ if (ret < 0)
++ goto fail;
++ }
++
++ av_log(pls->parent, AV_LOG_VERBOSE, "%s nb_streams[%d]\n", __FUNCTION__, (int)pls->ctx->nb_streams);
++
++fail:
++ return ret;
++}
++
++static int open_demux_for_component(AVFormatContext *s, struct representation *pls)
++{
++ int ret = 0;
++ int i;
++
++ pls->parent = s;
++ pls->cur_seq_no = calc_cur_seg_no(pls, s->priv_data);
++ pls->last_seq_no = calc_max_seg_no(pls, s->priv_data);
++
++
++ ret = reopen_demux_for_component(s, pls);
++ if (ret < 0) {
++ goto fail;
++ }
++
++ for (i = 0; i < pls->ctx->nb_streams; i++) {
++ AVStream *st = avformat_new_stream(s, NULL);
++ AVStream *ist = pls->ctx->streams[i];
++ if (!st) {
++ ret = AVERROR(ENOMEM);
++ goto fail;
++ }
++ st->id = i;
++
++ // avcodec_copy_context(st->codec, pls->ctx->streams[i]->codec);
++ avcodec_parameters_copy(st->codecpar, pls->ctx->streams[i]->codecpar);
++ avpriv_set_pts_info(st, ist->pts_wrap_bits, ist->time_base.num, ist->time_base.den);
++ }
++
++ return 0;
++fail:
++ return ret;
++}
++
++static int dash_read_header(AVFormatContext *s)
++{
++ void *u = (s->flags & AVFMT_FLAG_CUSTOM_IO) ? NULL : s->pb;
++ DASHContext *c = s->priv_data;
++ int ret = 0;
++ int stream_index = 0;
++
++ c->interrupt_callback = &s->interrupt_callback;
++
++ // if the URL context is good, read important options we must broker later
++ if (u) {
++ update_options(&c->user_agent, "user-agent", u);
++ update_options(&c->cookies, "cookies", u);
++ update_options(&c->headers, "headers", u);
++ }
++
++ if ((ret = parse_mainifest(s, s->filename, s->pb)) < 0)
++ goto fail;
++
++ if ((ret = save_avio_options(s)) < 0)
++ goto fail;
++
++ /* If this isn't a live stream, fill the total duration of the
++ * stream. */
++ if (!c->is_live) {
++ s->duration = (int64_t) c->mediaPresentationDurationSec * AV_TIME_BASE;
++ }
++
++ /* Open the demuxer for curent video and current audio components if available */
++ if (0 == ret && c->cur_video) {
++ ret = open_demux_for_component(s, c->cur_video);
++ if (ret == 0) {
++ c->cur_video->stream_index = stream_index;
++ ++stream_index;
++ } else {
++ free_representation(c->cur_video);
++ c->cur_video = NULL;
++ }
++ }
++
++ if (0 == ret && c->cur_audio) {
++ ret = open_demux_for_component(s, c->cur_audio);
++ if (ret == 0) {
++ c->cur_audio->stream_index = stream_index;
++ ++stream_index;
++ } else {
++ free_representation(c->cur_audio);
++ c->cur_audio = NULL;
++ }
++ }
++
++ if (0 == stream_index) {
++ ret = AVERROR_INVALIDDATA;
++ goto fail;
++ }
++
++ /* Create a program */
++ if (0 == ret) {
++ AVProgram *program;
++ program = av_new_program(s, 0);
++ if (!program) {
++ goto fail;
++ }
++
++ if (c->cur_video) {
++ av_program_add_stream_index(s, 0, c->cur_video->stream_index);
++ }
++
++ if (c->cur_audio) {
++ av_program_add_stream_index(s, 0, c->cur_audio->stream_index);
++ }
++ }
++
++ return 0;
++fail:
++ return ret;
++}
++
++static int dash_read_packet(AVFormatContext *s, AVPacket *pkt)
++{
++ DASHContext *c = s->priv_data;
++ int ret = 0;
++ struct representation *cur = NULL;
++
++ if (!c->cur_audio && !c->cur_video) {
++ return AVERROR_INVALIDDATA;
++ }
++
++ if (c->cur_audio && !c->cur_video) {
++ cur = c->cur_audio;
++ } else if (!c->cur_audio && c->cur_video) {
++ cur = c->cur_video;
++ } else if (c->cur_video->cur_timestamp > c->cur_audio->cur_timestamp) {
++ cur = c->cur_audio;
++ } else {
++ cur = c->cur_video;
++ }
++
++ if (cur->ctx) {
++ while (!ff_check_interrupt(c->interrupt_callback) && ret == 0) {
++ ret = av_read_frame(cur->ctx, &cur->pkt);
++
++ if (0 == ret) {
++ /* If we got a packet, return it */
++ *pkt = cur->pkt;
++ cur->cur_timestamp = av_rescale(pkt->pts, (int64_t)cur->ctx->streams[0]->time_base.num * 90000, cur->ctx->streams[0]->time_base.den);
++ pkt->stream_index = cur->stream_index;
++ reset_packet(&cur->pkt);
++ return 0;
++ }
++
++ reset_packet(&cur->pkt);
++
++ if (cur->is_restart_needed) {
++ while (!ff_check_interrupt(c->interrupt_callback)) {
++ cur->cur_seg_offset = 0;
++ cur->init_sec_buf_read_offset = 0;
++ if (cur->input)
++ ff_format_io_close(cur->parent, &cur->input);
++ ret = reopen_demux_for_component(s, cur);
++ if (c->is_live && ret != 0) {
++ sleep(2);
++ continue;
++ }
++ break;
++ }
++ cur->is_restart_needed = 0;
++ }
++ }
++ }
++
++ return AVERROR_EOF;
++}
++
++static int dash_close(AVFormatContext *s)
++{
++ DASHContext *c = s->priv_data;
++
++ if (c->cur_audio) {
++ free_representation(c->cur_audio);
++ }
++
++ if (c->cur_video) {
++ free_representation(c->cur_video);
++ }
++
++ av_freep(&c->cookies);
++ av_freep(&c->user_agent);
++ av_dict_free(&c->avio_opts);
++ av_freep(&c->base_url);
++ return 0;
++}
++
++static int dash_seek(AVFormatContext *s, struct representation *pls, int64_t seekPosMSec, int flags)
++{
++ int ret = 0;
++
++ av_log(pls->parent, AV_LOG_VERBOSE, "DASH seek pos[%"PRId64"ms], playlist %d\n", seekPosMSec, pls->rep_idx);
++ // single segment mode
++ if (pls->n_segments == 1) {
++ pls->cur_timestamp = 0;
++ pls->cur_seg_offset = 0;
++ ff_read_frame_flush(pls->ctx);
++ return av_seek_frame(pls->ctx, -1, seekPosMSec*1000, flags);
++ }
++
++ if (pls->input)
++ ff_format_io_close(pls->parent, &pls->input);
++
++ // find the nearest segment
++ if (pls->n_timelines > 0 && pls->segmentTimescalce > 0) {
++ int64_t duration = 0;
++ int i;
++ int j;
++ int64_t num = pls->first_seq_no;
++ av_log(pls->parent, AV_LOG_VERBOSE, "dash_seek with SegmentTimeline start n_timelines[%d] last_seq_no[%"PRId64"], playlist %d.\n", (int)pls->n_timelines, (int64_t)pls->last_seq_no, (int)pls->rep_idx);
++ for (i = 0; i < pls->n_timelines; ++i) {
++ if (pls->timelines[i]->t > 0) {
++ duration = pls->timelines[i]->t;
++ }
++
++ duration += pls->timelines[i]->d;
++ if (seekPosMSec < ((duration * 1000) / pls->segmentTimescalce)) {
++ goto set_seq_num;
++ }
++
++ for (j = 0; j < pls->timelines[i]->r; ++j) {
++ duration += pls->timelines[i]->d;
++ num += 1;
++ if (seekPosMSec < ((duration * 1000) / pls->segmentTimescalce)) {
++ goto set_seq_num;
++ }
++ }
++ num += 1;
++ }
++set_seq_num:
++ pls->cur_seq_no = num > pls->last_seq_no ? pls->last_seq_no : num;
++ av_log(pls->parent, AV_LOG_VERBOSE, "dash_seek with SegmentTimeline end cur_seq_no[%"PRId64"], playlist %d.\n", (int64_t)pls->cur_seq_no, (int)pls->rep_idx);
++ }
++ else if(pls->segmentDuration > 0) {
++ pls->cur_seq_no = pls->first_seq_no + ((seekPosMSec * pls->segmentTimescalce) / pls->segmentDuration) / 1000;
++ } else {
++ av_log(pls->parent, AV_LOG_ERROR, "dash_seek missing segmentDuration\n");
++ pls->cur_seq_no = pls->first_seq_no;
++ }
++ pls->cur_timestamp = 0;
++ pls->cur_seg_offset = 0;
++
++ pls->init_sec_buf_read_offset = 0;
++ ret = reopen_demux_for_component(s, pls);
++
++ return ret;
++}
++
++static int dash_read_seek(AVFormatContext *s, int stream_index,
++ int64_t timestamp, int flags)
++{
++ int ret = 0;
++ DASHContext *c = s->priv_data;
++ int64_t seekPosMSec = av_rescale_rnd(timestamp, 1000,
++ s->streams[stream_index]->time_base.den,
++ flags & AVSEEK_FLAG_BACKWARD ?
++ AV_ROUND_DOWN : AV_ROUND_UP);
++
++ if ((flags & AVSEEK_FLAG_BYTE) || c->is_live)
++ return AVERROR(ENOSYS);
++
++ if (c->cur_audio) {
++ ret = dash_seek(s, c->cur_audio, seekPosMSec, flags);
++ }
++
++ if (0 == ret && c->cur_video) {
++ ret = dash_seek(s, c->cur_video, seekPosMSec, flags);
++ }
++
++ return ret;
++}
++
++static int dash_probe(AVProbeData *p)
++{
++ if (!strstr(p->buf, "<MPD"))
++ return 0;
++
++ if (strstr(p->buf, "dash:profile:isoff-on-demand:2011") ||
++ strstr(p->buf, "dash:profile:isoff-live:2011") ||
++ strstr(p->buf, "dash:profile:isoff-live:2012") ||
++ strstr(p->buf, "dash:profile:isoff-main:2011")) {
++ return AVPROBE_SCORE_MAX;
++ }
++
++ if (strstr(p->buf, "dash:profile")) {
++ return AVPROBE_SCORE_MAX / 2;
++ }
++
++ return 0;
++}
++
++#define OFFSET(x) offsetof(DASHContext, x)
++#define FLAGS AV_OPT_FLAG_DECODING_PARAM
++static const AVOption dash_options[] = {
++ {"audio_rep_index", "audio representation index to be used",
++ OFFSET(audio_rep_index), AV_OPT_TYPE_INT, {.i64 = -1}, INT_MIN, INT_MAX, FLAGS},
++ {"video_rep_index", "video representation index to be used",
++ OFFSET(video_rep_index), AV_OPT_TYPE_INT, {.i64 = -1}, INT_MIN, INT_MAX, FLAGS},
++ {NULL}
++};
++
++static const AVClass dash_class = {
++ .class_name = "dash",
++ .item_name = av_default_item_name,
++ .option = dash_options,
++ .version = LIBAVUTIL_VERSION_INT,
++};
++
++AVInputFormat ff_dash_demuxer = {
++ .name = "dash",
++ .long_name = NULL_IF_CONFIG_SMALL("Dynamic Adaptive Streaming over HTTP"),
++ .priv_class = &dash_class,
++ .priv_data_size = sizeof(DASHContext),
++ .read_probe = dash_probe,
++ .read_header = dash_read_header,
++ .read_packet = dash_read_packet,
++ .read_close = dash_close,
++ .read_seek = dash_read_seek,
++ .flags = AVFMT_NO_BYTE_SEEK,
++};
+diff -uNr ffmpeg-3.3_orig/libavformat/Makefile ffmpeg-3.3_dash_demux/libavformat/Makefile
+--- ffmpeg-3.3_orig/libavformat/Makefile 2016-12-06 00:28:54.000000000 +0100
++++ ffmpeg-3.3_dash_demux/libavformat/Makefile 2017-10-22 14:30:41.170550487 +0200
+@@ -134,6 +134,7 @@
+ OBJS-$(CONFIG_DATA_DEMUXER) += rawdec.o
+ OBJS-$(CONFIG_DATA_MUXER) += rawenc.o
+ OBJS-$(CONFIG_DASH_MUXER) += dashenc.o
++OBJS-$(CONFIG_DASH_DEMUXER) += dashdec.o
+ OBJS-$(CONFIG_DAUD_DEMUXER) += dauddec.o
+ OBJS-$(CONFIG_DAUD_MUXER) += daudenc.o
+ OBJS-$(CONFIG_DCSTR_DEMUXER) += dcstr.o
projects / bs-cst-neutrino-hd.git / commitdiff