2017-09-08 0:42 GMT+08:00 Steven Liu <lingjiujia...@gmail.com>: > 2017-09-05 17:36 GMT+08:00 Steven Liu <lingjiujia...@gmail.com>: >> 2017-09-01 18:26 GMT+08:00 Steven Liu <l...@chinaffmpeg.org>: >>> ffmpeg need a dash demuxer for demux the dash formats base on >>> https://github.com/samsamsam-iptvplayer/exteplayer3/blob/master/tmp/ffmpeg/patches/3.2.2/000001_add_dash_demux.patch >>> >>> TODO: >>> 1. support multi bitrate dash. >>> >>> v2 fixed: >>> 1. from autodetect to disabled >>> 2. from camelCase code style to ffmpeg code style >>> 3. from RepType to AVMediaType >>> 4. fix variable typo >>> 5. change time value from uint32_t to uint64_t >>> 6. removed be used once API >>> 7. change 'time(NULL)`, except it is not 2038-safe.' to av_gettime and >>> av_timegm >>> 8. merge complex free operation to free_fragment >>> 9. use API from snprintf to av_asprintf >>> >>> v3 fixed: >>> 1. fix typo from --enabled-xml2 to --enable-xml2 >>> >>> v4 fixed: >>> 1. from --enable-xml2 to --enable-libxml2 >>> 2. move system includes to top >>> 3. remove nouse includes >>> 4. rename enum name >>> 5. add a trailing comma for the last entry enum >>> 6. fix comment typo >>> 7. add const to DASHContext class front >>> 8. check sscanf if return arguments and give warning message when error >>> 9. check validity before free seg->url and seg >>> 10. check if the val is null, before use atoll >>> >>> v5 fixed: >>> 1. fix typo from mainifest to manifest >>> >>> v6 fixed: >>> 1. from realloc to av_realloc >>> 2. from free to av_free >>> >>> v7 fixed: >>> 1. remove the -lxml2 from configure when require_pkg_config >>> >>> v8 fixed: >>> 1. fix replace filename template by av_asprintf secure problem >>> >>> v9 modified: >>> 1. make manifest parser clearly >>> >>> v10 fixed: >>> 1. fix function API name code style >>> 2. remove redundant strreplace call >>> 3. remove redundant memory operation and check return value from >>> get_content_url() >>> 4. add space between ) and { >>> 5. remove no need to log the value for print >>> >>> v11 fixed: >>> 1. from atoll to strtoll >>> Suggested-by: Michael Niedermayer <mich...@niedermayer.cc> >>> >>> v12 fixed: >>> 1. remove strreplace and instead by av_strreplace >>> Suggested-by: Nicolas George <geo...@nsup.org> >>> >>> v13 fixed: >>> 1. fix bug: cannot play: >>> http://dash.edgesuite.net/akamai/bbb_30fps/bbb_30fps.mpd >>> Reported-by: Andy Furniss <adf.li...@gmail.com> >>> >>> v14 fixed: >>> 1. fix bug: TLS connection was non-properly terminated >>> 2. fix bug: No trailing CRLF found in HTTP header >>> Reported-by: Andy Furniss <adf.li...@gmail.com> >>> >>> v15 fixed: >>> 1. play youtube link: ffmpeg -i $(youtube-dl -J >>> "https://www.youtube.com/watch?v=XmL19DOP_Ls"; | jq -r >>> ".requested_formats[0].manifest_url") >>> 2. code refine for timeline living stream >>> Reported-by: Ricardo Constantino <wiia...@gmail.com> >>> >>> v16 fixed: >>> 1. remove the snprintf and instead by get_segment_filename make safety >>> 2. remove unnecessary loops >>> 3. updated xmlStrcmp and xmlFree to av_* functions >>> 4. merge code repeat into one function >>> 5. add memory alloc faild check >>> 6. update update_init_section and open_url >>> 7. output safety error message when filename template not safe >>> Suggested-by : wm4 <nfx...@googlemail.com> >>> >>> v17 fixed: >>> 1. add memory alloc faild check >>> 2. fix resource space error at free_representation >>> >>> v18 fixed: >>> 1. add condition of template format >>> >>> v19 fixed: >>> 1. fix typo of the option describe >>> >>> v20 fixed: >>> 1. add the c->base_url alloc check >>> 2. make the DASHTmplId same to dashenc >>> >>> v21 fixed: >>> 1. remove get_repl_pattern_and_format and get_segment_filename >>> 2. process use dashcomm APIs >>> >>> v22 fixed: >>> 1. modify the include "dashcomm.h" to include "dash.h" >>> 2. use internal API from dash_fill_tmpl_params to ff_dash_fill_tmpl_params >>> >>> Signed-off-by: Steven Liu <l...@chinaffmpeg.org> >>> Signed-off-by: samsamsam <samsam...@o2.pl> >>> --- >>> configure | 4 + >>> libavformat/Makefile | 1 + >>> libavformat/allformats.c | 2 +- >>> libavformat/dashdec.c | 1848 >>> ++++++++++++++++++++++++++++++++++++++++++++++ >>> 4 files changed, 1854 insertions(+), 1 deletion(-) >>> create mode 100644 libavformat/dashdec.c >>> >>> diff --git a/configure b/configure >>> index 4f1c172333..3f0d05a6f9 100755 >>> --- a/configure >>> +++ b/configure >>> @@ -272,6 +272,7 @@ External library support: >>> --enable-libxcb-shape enable X11 grabbing shape rendering [autodetect] >>> --enable-libxvid enable Xvid encoding via xvidcore, >>> native MPEG-4/Xvid encoder exists [no] >>> + --enable-libxml2 enable XML parsing using the C library libxml2 >>> [no] >>> --enable-libzimg enable z.lib, needed for zscale filter [no] >>> --enable-libzmq enable message passing via libzmq [no] >>> --enable-libzvbi enable teletext support via libzvbi [no] >>> @@ -1578,6 +1579,7 @@ EXTERNAL_LIBRARY_LIST=" >>> libvpx >>> libwavpack >>> libwebp >>> + libxml2 >>> libzimg >>> libzmq >>> libzvbi >>> @@ -2939,6 +2941,7 @@ avi_muxer_select="riffenc" >>> caf_demuxer_select="iso_media riffdec" >>> caf_muxer_select="iso_media" >>> dash_muxer_select="mp4_muxer" >>> +dash_demuxer_deps="libxml2" >>> dirac_demuxer_select="dirac_parser" >>> dts_demuxer_select="dca_parser" >>> dtshd_demuxer_select="dca_parser" >>> @@ -6006,6 +6009,7 @@ enabled openssl && { use_pkg_config openssl >>> openssl/ssl.h OPENSSL_init >>> check_lib openssl openssl/ssl.h >>> SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 || >>> die "ERROR: openssl not found"; } >>> enabled qtkit_indev && { check_header_objcc QTKit/QTKit.h || disable >>> qtkit_indev; } >>> +enabled libxml2 && require_pkg_config libxml-2.0 >>> libxml2/libxml/xmlversion.h xmlCheckVersion >>> >>> if enabled gcrypt; then >>> GCRYPT_CONFIG="${cross_prefix}libgcrypt-config" >>> diff --git a/libavformat/Makefile b/libavformat/Makefile >>> index de954af130..ac03e0d471 100644 >>> --- a/libavformat/Makefile >>> +++ b/libavformat/Makefile >>> @@ -133,6 +133,7 @@ OBJS-$(CONFIG_CRC_MUXER) += crcenc.o >>> OBJS-$(CONFIG_DATA_DEMUXER) += rawdec.o >>> OBJS-$(CONFIG_DATA_MUXER) += rawenc.o >>> OBJS-$(CONFIG_DASH_MUXER) += dash.o 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 >>> diff --git a/libavformat/allformats.c b/libavformat/allformats.c >>> index cb09a60e6f..416e5e1127 100644 >>> --- a/libavformat/allformats.c >>> +++ b/libavformat/allformats.c >>> @@ -96,7 +96,7 @@ static void register_all(void) >>> 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 --git a/libavformat/dashdec.c b/libavformat/dashdec.c >>> new file mode 100644 >>> index 0000000000..9a3a199d4e >>> --- /dev/null >>> +++ b/libavformat/dashdec.c >>> @@ -0,0 +1,1848 @@ >>> +/* >>> + * Dynamic Adaptive Streaming over HTTP demux >>> + * Copyright (c) 2017 samsam...@o2.pl based on HLS demux >>> + * Copyright (c) 2017 Steven Liu >>> + * >>> + * 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 >>> + */ >>> +#include <libxml/parser.h> >>> +#include "libavutil/intreadwrite.h" >>> +#include "libavutil/opt.h" >>> +#include "libavutil/time.h" >>> +#include "libavutil/parseutils.h" >>> +#include "internal.h" >>> +#include "avio_internal.h" >>> +#include "dash.h" >>> + >>> +#define INITIAL_BUFFER_SIZE 32768 >>> + >>> +struct fragment { >>> + int64_t url_offset; >>> + int64_t size; >>> + char *url; >>> +}; >>> + >>> +/* >>> + * reference to : ISO_IEC_23009-1-DASH-2012 >>> + * Section: 5.3.9.6.2 >>> + * Table: Table 17 — Semantics of SegmentTimeline element >>> + * */ >>> +struct timeline { >>> + /* starttime: Element or Attribute Name >>> + * specifies the MPD start time, in @timescale units, >>> + * the first Segment in the series starts relative to the beginning of >>> the Period. >>> + * The value of this attribute must be equal to or greater than the >>> sum of the previous S >>> + * element earliest presentation time and the sum of the contiguous >>> Segment durations. >>> + * If the value of the attribute is greater than what is expressed by >>> the previous S element, >>> + * it expresses discontinuities in the timeline. >>> + * If not present then the value shall be assumed to be zero for the >>> first S element >>> + * and for the subsequent S elements, the value shall be assumed to be >>> the sum of >>> + * the previous S element's earliest presentation time and contiguous >>> duration >>> + * (i.e. previous S@starttime + @duration * (@repeat + 1)). >>> + * */ >>> + int64_t starttime; >>> + /* repeat: Element or Attribute Name >>> + * specifies the repeat count of the number of following contiguous >>> Segments with >>> + * the same duration expressed by the value of @duration. This value >>> is zero-based >>> + * (e.g. a value of three means four Segments in the contiguous >>> series). >>> + * */ >>> + int64_t repeat; >>> + /* duration: Element or Attribute Name >>> + * specifies the Segment duration, in units of the value of the >>> @timescale. >>> + * */ >>> + int64_t duration; >>> +}; >>> + >>> +/* >>> + * Each playlist has its own demuxer. If it is currently active, >>> + * it has an opened AVIOContext too, and potentially an AVPacket >>> + * containing the next packet from this stream. >>> + */ >>> +struct representation { >>> + char *url_template; >>> + AVIOContext pb; >>> + AVIOContext *input; >>> + AVFormatContext *parent; >>> + AVFormatContext *ctx; >>> + AVPacket pkt; >>> + int rep_idx; >>> + int rep_count; >>> + int stream_index; >>> + >>> + enum AVMediaType type; >>> + >>> + int n_fragments; >>> + struct fragment **fragments; /* VOD list of fragment 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 fragment_duration; >>> + int64_t fragment_timescale; >>> + >>> + int64_t presentation_timeoffset; >>> + >>> + int64_t cur_seq_no; >>> + int64_t cur_seg_offset; >>> + int64_t cur_seg_size; >>> + struct fragment *cur_seg; >>> + >>> + /* Currently active Media Initialization Section */ >>> + struct fragment *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; >>> + int64_t cur_timestamp; >>> + int is_restart_needed; >>> +}; >>> + >>> +typedef struct DASHContext { >>> + const AVClass *class; >>> + char *base_url; >>> + struct representation *cur_video; >>> + struct representation *cur_audio; >>> + >>> + /* MediaPresentationDescription Attribute */ >>> + uint64_t media_presentation_duration; >>> + uint64_t suggested_presentation_delay; >>> + uint64_t availability_start_time; >>> + uint64_t publish_time; >>> + uint64_t minimum_update_period; >>> + uint64_t time_shift_buffer_depth; >>> + uint64_t min_buffer_time; >>> + >>> + /* Period Attribute */ >>> + uint64_t period_duration; >>> + uint64_t period_start; >>> + >>> + int is_live; >>> + 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 >>> + char *allowed_extensions; >>> + AVDictionary *avio_opts; >>> +} DASHContext; >>> + >>> +static uint64_t get_current_time_in_sec(void) >>> +{ >>> + return av_gettime() / 1000000; >>> +} >>> + >>> +static uint64_t get_utc_date_time_insec(AVFormatContext *s, const char >>> *datetime) >>> +{ >>> + struct tm timeinfo; >>> + int year = 0; >>> + int month = 0; >>> + int day = 0; >>> + int hour = 0; >>> + int minute = 0; >>> + int ret = 0; >>> + float second = 0.0; >>> + >>> + /* ISO-8601 date parser */ >>> + if (!datetime) >>> + return 0; >>> + >>> + ret = sscanf(datetime, "%d-%d-%dT%d:%d:%fZ", &year, &month, &day, >>> &hour, &minute, &second); >>> + /* year, month, day, hour, minute, second 6 arguments */ >>> + if (ret != 6) { >>> + av_log(s, AV_LOG_WARNING, "get_utc_date_time_insec get a wrong >>> time format\n"); >>> + } >>> + timeinfo.tm_year = year - 1900; >>> + timeinfo.tm_mon = month - 1; >>> + timeinfo.tm_mday = day; >>> + timeinfo.tm_hour = hour; >>> + timeinfo.tm_min = minute; >>> + timeinfo.tm_sec = (int)second; >>> + >>> + return av_timegm(&timeinfo); >>> +} >>> + >>> +static uint32_t get_duration_insec(AVFormatContext *s, const char >>> *duration) >>> +{ >>> + /* ISO-8601 duration parser */ >>> + uint32_t days = 0; >>> + uint32_t hours = 0; >>> + uint32_t mins = 0; >>> + uint32_t secs = 0; >>> + int size = 0; >>> + float value = 0; >>> + char type = '\0'; >>> + const char *ptr = duration; >>> + >>> + while (*ptr) { >>> + if (*ptr == 'P' || *ptr == 'T') { >>> + ptr++; >>> + continue; >>> + } >>> + >>> + if (sscanf(ptr, "%f%c%n", &value, &type, &size) != 2) { >>> + av_log(s, AV_LOG_WARNING, "get_duration_insec get a wrong time >>> format\n"); >>> + 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 += size; >>> + } >>> + return ((days * 24 + hours) * 60 + mins) * 60 + secs; >>> +} >>> + >>> +static int64_t get_segment_start_time_based_on_timeline(struct >>> representation *pls, int64_t cur_seq_no) >>> +{ >>> + int64_t start_time = 0; >>> + int64_t i = 0; >>> + int64_t j = 0; >>> + int64_t num = 0; >>> + >>> + if (pls->n_timelines) { >>> + for (i = 0; i < pls->n_timelines; i++) { >>> + if (pls->timelines[i]->starttime > 0) { >>> + start_time = pls->timelines[i]->starttime; >>> + } >>> + if (num == cur_seq_no) >>> + goto finish; >>> + >>> + start_time += pls->timelines[i]->duration; >>> + for (j = 0; j < pls->timelines[i]->repeat; j++) { >>> + num++; >>> + if (num == cur_seq_no) >>> + goto finish; >>> + start_time += pls->timelines[i]->duration; >>> + } >>> + num++; >>> + } >>> + } >>> +finish: >>> + return start_time; >>> +} >>> + >>> +static int64_t calc_next_seg_no_from_timelines(struct representation *pls, >>> int64_t cur_time) >>> +{ >>> + int64_t i = 0; >>> + int64_t j = 0; >>> + int64_t num = 0; >>> + int64_t start_time = 0; >>> + >>> + for (i = 0; i < pls->n_timelines; i++) { >>> + if (pls->timelines[i]->starttime > 0) { >>> + start_time = pls->timelines[i]->starttime; >>> + } >>> + if (start_time > cur_time) >>> + goto finish; >>> + >>> + start_time += pls->timelines[i]->duration; >>> + for (j = 0; j < pls->timelines[i]->repeat; j++) { >>> + num++; >>> + if (start_time > cur_time) >>> + goto finish; >>> + start_time += pls->timelines[i]->duration; >>> + } >>> + num++; >>> + } >>> + >>> + return -1; >>> + >>> +finish: >>> + return num; >>> +} >>> + >>> +static void free_fragment(struct fragment **seg) >>> +{ >>> + if (!(*seg)) { >>> + return; >>> + } >>> + av_freep(&(*seg)->url); >>> + av_freep(seg); >>> +} >>> + >>> +static void free_fragment_list(struct representation *pls) >>> +{ >>> + int i; >>> + >>> + for (i = 0; i < pls->n_fragments; i++) { >>> + free_fragment(&pls->fragments[i]); >>> + } >>> + av_freep(&pls->fragments); >>> + pls->n_fragments = 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; >>> +} >>> + >>> +static void free_representation(struct representation *pls) >>> +{ >>> + free_fragment_list(pls); >>> + free_timelines_list(pls); >>> + free_fragment(&pls->cur_seg); >>> + free_fragment(&pls->init_section); >>> + av_freep(&pls->init_sec_buf); >>> + 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_freep(&pls->url_template); >>> + av_freep(pls); >>> +} >>> + >>> +static void set_httpheader_options(DASHContext *c, AVDictionary *opts) >>> +{ >>> + // 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); >>> + } >>> +} >>> +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) >>> + 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 (av_strstart(url, "crypto", NULL)) { >>> + if (url[6] == '+' || url[6] == ':') >>> + proto_name = avio_find_protocol_name(url + 7); >>> + } >>> + >>> + 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, "file", NULL)) { >>> + if (strcmp(c->allowed_extensions, "ALL") && !av_match_ext(url, >>> c->allowed_extensions)) { >>> + av_log(s, AV_LOG_ERROR, >>> + "Filename extension of \'%s\' is not a common multimedia >>> extension, blocked for security reasons.\n" >>> + "If you wish to override this adjust allowed_extensions, >>> you can set it to \'ALL\' to allow all\n", >>> + url); >>> + return AVERROR_INVALIDDATA; >>> + } >>> + } else if (av_strstart(proto_name, "http", NULL)) { >>> + ; >>> + } else >>> + return AVERROR_INVALIDDATA; >>> + >>> + if (!strncmp(proto_name, url, strlen(proto_name)) && >>> url[strlen(proto_name)] == ':') >>> + ; >>> + else if (av_strstart(url, "crypto", NULL) && !strncmp(proto_name, url >>> + 7, strlen(proto_name)) && url[7 + 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. >>> + char *new_cookies = NULL; >>> + >>> + if (!(s->flags & AVFMT_FLAG_CUSTOM_IO)) >>> + av_opt_get(*pb, "cookies", AV_OPT_SEARCH_CHILDREN, >>> (uint8_t**)&new_cookies); >>> + >>> + if (new_cookies) { >>> + av_free(c->cookies); >>> + c->cookies = new_cookies; >>> + } >>> + >>> + 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; >>> +} >>> + >>> +static char *get_content_url(xmlNodePtr *baseurl_nodes, >>> + int n_baseurl_nodes, >>> + char *rep_id_val, >>> + char *rep_bandwidth_val, >>> + char *val) >>> +{ >>> + int i; >>> + char *text; >>> + char *url = NULL; >>> + char tmp_str[MAX_URL_SIZE]; >>> + char tmp_str_2[MAX_URL_SIZE]; >>> + >>> + memset(tmp_str, 0, sizeof(tmp_str)); >>> + >>> + for (i = 0; i < n_baseurl_nodes; ++i) { >>> + if (baseurl_nodes[i] && >>> + baseurl_nodes[i]->children && >>> + baseurl_nodes[i]->children->type == XML_TEXT_NODE) { >>> + text = xmlNodeGetContent(baseurl_nodes[i]->children); >>> + if (text) { >>> + memset(tmp_str, 0, sizeof(tmp_str)); >>> + memset(tmp_str_2, 0, sizeof(tmp_str_2)); >>> + ff_make_absolute_url(tmp_str_2, MAX_URL_SIZE, tmp_str, >>> text); >>> + av_strlcpy(tmp_str, tmp_str_2, sizeof(tmp_str)); >>> + av_free(text); >>> + } >>> + } >>> + } >>> + >>> + if (val) >>> + av_strlcat(tmp_str, (const char*)val, sizeof(tmp_str)); >>> + >>> + if (rep_id_val) { >>> + url = av_strireplace(tmp_str, "$RepresentationID$", (const >>> char*)rep_id_val); >>> + if (!url) { >>> + return NULL; >>> + } >>> + av_strlcpy(tmp_str, url, sizeof(tmp_str)); >>> + av_free(url); >>> + } >>> + if (rep_bandwidth_val && tmp_str[0] != '\0') { >>> + url = av_strireplace(tmp_str, "$Bandwidth$", (const >>> char*)rep_bandwidth_val); >>> + if (!url) { >>> + return NULL; >>> + } >>> + } >>> + return url; >>> +} >>> + >>> +static char *get_val_from_nodes_tab(xmlNodePtr *nodes, const int n_nodes, >>> const char *attrname) >>> +{ >>> + int i; >>> + char *val; >>> + >>> + for (i = 0; i < n_nodes; ++i) { >>> + if (nodes[i]) { >>> + val = xmlGetProp(nodes[i], attrname); >>> + if (val) >>> + return val; >>> + } >>> + } >>> + >>> + return NULL; >>> +} >>> + >>> +static xmlNodePtr find_child_node_by_name(xmlNodePtr rootnode, const char >>> *nodename) >>> +{ >>> + xmlNodePtr node = rootnode; >>> + if (!node) { >>> + return NULL; >>> + } >>> + >>> + node = xmlFirstElementChild(node); >>> + while (node) { >>> + if (!av_strcasecmp(node->name, nodename)) { >>> + return node; >>> + } >>> + node = xmlNextElementSibling(node); >>> + } >>> + return NULL; >>> +} >>> + >>> +static enum AVMediaType get_content_type(xmlNodePtr node) >>> +{ >>> + enum AVMediaType type = AVMEDIA_TYPE_UNKNOWN; >>> + int i = 0; >>> + const char *attr; >>> + char *val = NULL; >>> + >>> + if (node) { >>> + for (i = 0; i < 2; i++) { >>> + attr = i ? "mimeType" : "contentType"; >>> + val = xmlGetProp(node, attr); >>> + if (val) { >>> + if (av_stristr((const char *)val, "video")) { >>> + type = AVMEDIA_TYPE_VIDEO; >>> + } else if (av_stristr((const char *)val, "audio")) { >>> + type = AVMEDIA_TYPE_AUDIO; >>> + } >>> + av_free(val); >>> + } >>> + } >>> + } >>> + return type; >>> +} >>> + >>> +static int parse_manifest_segmenturlnode(AVFormatContext *s, struct >>> representation *rep, >>> + xmlNodePtr fragmenturl_node, >>> + xmlNodePtr *baseurl_nodes, >>> + char *rep_id_val, >>> + char *rep_bandwidth_val) >>> +{ >>> + char *initialization_val = NULL; >>> + char *media_val = NULL; >>> + >>> + if (!av_strcasecmp(fragmenturl_node->name, (const char >>> *)"Initialization")) { >>> + initialization_val = xmlGetProp(fragmenturl_node, "sourceURL"); >>> + if (initialization_val) { >>> + rep->init_section = av_mallocz(sizeof(struct fragment)); >>> + if (!rep->init_section) { >>> + av_free(initialization_val); >>> + return AVERROR(ENOMEM); >>> + } >>> + rep->init_section->url = get_content_url(baseurl_nodes, 4, >>> + rep_id_val, >>> + rep_bandwidth_val, >>> + initialization_val); >>> + if (!rep->init_section->url) { >>> + av_free(rep->init_section); >>> + av_free(initialization_val); >>> + return AVERROR(ENOMEM); >>> + } >>> + rep->init_section->size = -1; >>> + av_free(initialization_val); >>> + } >>> + } else if (!av_strcasecmp(fragmenturl_node->name, (const char >>> *)"SegmentURL")) { >>> + media_val = xmlGetProp(fragmenturl_node, "media"); >>> + if (media_val) { >>> + struct fragment *seg = av_mallocz(sizeof(struct fragment)); >>> + if (!seg) { >>> + av_free(media_val); >>> + return AVERROR(ENOMEM); >>> + } >>> + seg->url = get_content_url(baseurl_nodes, 4, >>> + rep_id_val, >>> + rep_bandwidth_val, >>> + media_val); >>> + if (!seg->url) { >>> + av_free(seg); >>> + av_free(media_val); >>> + return AVERROR(ENOMEM); >>> + } >>> + seg->size = -1; >>> + dynarray_add(&rep->fragments, &rep->n_fragments, seg); >>> + av_free(media_val); >>> + } >>> + } >>> + >>> + return 0; >>> +} >>> + >>> +static int parse_manifest_segmenttimeline(AVFormatContext *s, struct >>> representation *rep, >>> + xmlNodePtr >>> fragment_timeline_node) >>> +{ >>> + xmlAttrPtr attr = NULL; >>> + char *val = NULL; >>> + >>> + if (!av_strcasecmp(fragment_timeline_node->name, (const char *)"S")) { >>> + struct timeline *tml = av_mallocz(sizeof(struct timeline)); >>> + if (!tml) { >>> + return AVERROR(ENOMEM); >>> + } >>> + attr = fragment_timeline_node->properties; >>> + while (attr) { >>> + val = xmlGetProp(fragment_timeline_node, attr->name); >>> + >>> + if (!val) { >>> + av_log(s, AV_LOG_WARNING, "parse_manifest_segmenttimeline >>> attr->name = %s val is NULL\n", attr->name); >>> + continue; >>> + } >>> + >>> + if (!av_strcasecmp(attr->name, (const char *)"t")) { >>> + tml->starttime = (int64_t)strtoll(val, NULL, 10); >>> + } else if (!av_strcasecmp(attr->name, (const char *)"r")) { >>> + tml->repeat =(int64_t) strtoll(val, NULL, 10); >>> + } else if (!av_strcasecmp(attr->name, (const char *)"d")) { >>> + tml->duration = (int64_t)strtoll(val, NULL, 10); >>> + } >>> + attr = attr->next; >>> + av_free(val); >>> + } >>> + dynarray_add(&rep->timelines, &rep->n_timelines, tml); >>> + } >>> + >>> + return 0; >>> +} >>> + >>> +static int parse_manifest_representation(AVFormatContext *s, const char >>> *url, >>> + xmlNodePtr node, >>> + xmlNodePtr adaptionset_node, >>> + xmlNodePtr mpd_baseurl_node, >>> + xmlNodePtr period_baseurl_node, >>> + xmlNodePtr fragment_template_node, >>> + xmlNodePtr content_component_node, >>> + xmlNodePtr >>> adaptionset_baseurl_node) >>> +{ >>> + int32_t ret = 0; >>> + int32_t audio_rep_idx = 0; >>> + int32_t video_rep_idx = 0; >>> + DASHContext *c = s->priv_data; >>> + struct representation *rep = NULL; >>> + struct fragment *seg = NULL; >>> + xmlNodePtr representation_segmenttemplate_node = NULL; >>> + xmlNodePtr representation_baseurl_node = NULL; >>> + xmlNodePtr representation_segmentlist_node = NULL; >>> + xmlNodePtr fragment_timeline_node = NULL; >>> + xmlNodePtr fragment_templates_tab[2]; >>> + char *duration_val = NULL; >>> + char *presentation_timeoffset_val = NULL; >>> + char *startnumber_val = NULL; >>> + char *timescale_val = NULL; >>> + char *initialization_val = NULL; >>> + char *media_val = NULL; >>> + xmlNodePtr baseurl_nodes[4]; >>> + xmlNodePtr representation_node = node; >>> + char *rep_id_val = xmlGetProp(representation_node, "id"); >>> + char *rep_bandwidth_val = xmlGetProp(representation_node, "bandwidth"); >>> + enum AVMediaType type = AVMEDIA_TYPE_UNKNOWN; >>> + >>> + // try get information from representation >>> + if (type == AVMEDIA_TYPE_UNKNOWN) >>> + type = get_content_type(representation_node); >>> + // try get information from contentComponen >>> + if (type == AVMEDIA_TYPE_UNKNOWN) >>> + type = get_content_type(content_component_node); >>> + // try get information from adaption set >>> + if (type == AVMEDIA_TYPE_UNKNOWN) >>> + type = get_content_type(adaptionset_node); >>> + if (type == AVMEDIA_TYPE_UNKNOWN) { >>> + av_log(s, AV_LOG_VERBOSE, "Parsing '%s' - skipp not supported >>> representation type\n", url); >>> + } else if ((type == AVMEDIA_TYPE_VIDEO && !c->cur_video) || (type == >>> AVMEDIA_TYPE_AUDIO && !c->cur_audio)) { >>> + // convert selected representation to our internal struct >>> + rep = av_mallocz(sizeof(struct representation)); >>> + if (!rep) { >>> + ret = AVERROR(ENOMEM); >>> + goto end; >>> + } >>> + representation_segmenttemplate_node = >>> find_child_node_by_name(representation_node, "SegmentTemplate"); >>> + representation_baseurl_node = >>> find_child_node_by_name(representation_node, "BaseURL"); >>> + representation_segmentlist_node = >>> find_child_node_by_name(representation_node, "SegmentList"); >>> + >>> + baseurl_nodes[0] = mpd_baseurl_node; >>> + baseurl_nodes[1] = period_baseurl_node; >>> + baseurl_nodes[2] = adaptionset_baseurl_node; >>> + baseurl_nodes[3] = representation_baseurl_node; >>> + >>> + if (representation_segmenttemplate_node || fragment_template_node) >>> { >>> + fragment_timeline_node = NULL; >>> + fragment_templates_tab[0] = >>> representation_segmenttemplate_node; >>> + fragment_templates_tab[1] = fragment_template_node; >>> + >>> + presentation_timeoffset_val = >>> get_val_from_nodes_tab(fragment_templates_tab, 2, "presentationTimeOffset"); >>> + duration_val = get_val_from_nodes_tab(fragment_templates_tab, >>> 2, "duration"); >>> + startnumber_val = >>> get_val_from_nodes_tab(fragment_templates_tab, 2, "startNumber"); >>> + timescale_val = get_val_from_nodes_tab(fragment_templates_tab, >>> 2, "timescale"); >>> + initialization_val = >>> get_val_from_nodes_tab(fragment_templates_tab, 2, "initialization"); >>> + media_val = get_val_from_nodes_tab(fragment_templates_tab, 2, >>> "media"); >>> + >>> + if (initialization_val) { >>> + rep->init_section = av_mallocz(sizeof(struct fragment)); >>> + if (!rep->init_section) { >>> + av_free(rep); >>> + ret = AVERROR(ENOMEM); >>> + goto end; >>> + } >>> + rep->init_section->url = get_content_url(baseurl_nodes, 4, >>> rep_id_val, rep_bandwidth_val, initialization_val); >>> + if (!rep->init_section->url) { >>> + av_free(rep->init_section); >>> + av_free(rep); >>> + ret = AVERROR(ENOMEM); >>> + goto end; >>> + } >>> + rep->init_section->size = -1; >>> + av_free(initialization_val); >>> + } >>> + >>> + if (media_val) { >>> + rep->url_template = get_content_url(baseurl_nodes, 4, >>> rep_id_val, rep_bandwidth_val, media_val); >>> + av_free(media_val); >>> + } >>> + >>> + if (presentation_timeoffset_val) { >>> + rep->presentation_timeoffset = (int64_t) >>> strtoll(presentation_timeoffset_val, NULL, 10); >>> + av_free(presentation_timeoffset_val); >>> + } >>> + if (duration_val) { >>> + rep->fragment_duration = (int64_t) strtoll(duration_val, >>> NULL, 10); >>> + av_free(duration_val); >>> + } >>> + if (timescale_val) { >>> + rep->fragment_timescale = (int64_t) strtoll(timescale_val, >>> NULL, 10); >>> + av_free(timescale_val); >>> + } >>> + if (startnumber_val) { >>> + rep->first_seq_no = (int64_t) strtoll(startnumber_val, >>> NULL, 10); >>> + av_free(startnumber_val); >>> + } >>> + >>> + fragment_timeline_node = >>> find_child_node_by_name(representation_segmenttemplate_node, >>> "SegmentTimeline"); >>> + >>> + if (!fragment_timeline_node) >>> + fragment_timeline_node = >>> find_child_node_by_name(fragment_template_node, "SegmentTimeline"); >>> + if (fragment_timeline_node) { >>> + fragment_timeline_node = >>> xmlFirstElementChild(fragment_timeline_node); >>> + while (fragment_timeline_node) { >>> + ret = parse_manifest_segmenttimeline(s, rep, >>> fragment_timeline_node); >>> + if (ret < 0) { >>> + return ret; >>> + } >>> + fragment_timeline_node = >>> xmlNextElementSibling(fragment_timeline_node); >>> + } >>> + } >>> + } else if (representation_baseurl_node && >>> !representation_segmentlist_node) { >>> + seg = av_mallocz(sizeof(struct fragment)); >>> + if (!seg) { >>> + ret = AVERROR(ENOMEM); >>> + goto end; >>> + } >>> + seg->url = get_content_url(baseurl_nodes, 4, rep_id_val, >>> rep_bandwidth_val, NULL); >>> + if (!seg->url) { >>> + av_free(seg); >>> + ret = AVERROR(ENOMEM); >>> + goto end; >>> + } >>> + seg->size = -1; >>> + dynarray_add(&rep->fragments, &rep->n_fragments, seg); >>> + } else if (representation_segmentlist_node) { >>> + // TODO: >>> https://www.brendanlong.com/the-structure-of-an-mpeg-dash-mpd.html >>> + // >>> http://www-itec.uni-klu.ac.at/dash/ddash/mpdGenerator.php?fragmentlength=15&type=full >>> + xmlNodePtr fragmenturl_node = NULL; >>> + duration_val = xmlGetProp(representation_segmentlist_node, >>> "duration"); >>> + timescale_val = xmlGetProp(representation_segmentlist_node, >>> "timescale"); >>> + if (duration_val) { >>> + rep->fragment_duration = (int64_t) strtoll(duration_val, >>> NULL, 10); >>> + av_free(duration_val); >>> + } >>> + if (timescale_val) { >>> + rep->fragment_timescale = (int64_t) strtoll(timescale_val, >>> NULL, 10); >>> + av_free(timescale_val); >>> + } >>> + fragmenturl_node = >>> xmlFirstElementChild(representation_segmentlist_node); >>> + while (fragmenturl_node) { >>> + ret = parse_manifest_segmenturlnode(s, rep, >>> fragmenturl_node, >>> + baseurl_nodes, >>> + rep_id_val, >>> + rep_bandwidth_val); >>> + if (ret < 0) { >>> + return ret; >>> + } >>> + fragmenturl_node = xmlNextElementSibling(fragmenturl_node); >>> + } >>> + >>> + fragment_timeline_node = >>> find_child_node_by_name(representation_segmenttemplate_node, >>> "SegmentTimeline"); >>> + >>> + if (!fragment_timeline_node) >>> + fragment_timeline_node = >>> find_child_node_by_name(fragment_template_node, "SegmentTimeline"); >>> + if (fragment_timeline_node) { >>> + fragment_timeline_node = >>> xmlFirstElementChild(fragment_timeline_node); >>> + while (fragment_timeline_node) { >>> + ret = parse_manifest_segmenttimeline(s, rep, >>> fragment_timeline_node); >>> + if (ret < 0) { >>> + return ret; >>> + } >>> + fragment_timeline_node = >>> xmlNextElementSibling(fragment_timeline_node); >>> + } >>> + } >>> + } 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->fragment_duration > 0 && !rep->fragment_timescale) >>> + rep->fragment_timescale = 1; >>> + if (type == AVMEDIA_TYPE_VIDEO) { >>> + rep->rep_idx = video_rep_idx; >>> + c->cur_video = rep; >>> + } else { >>> + rep->rep_idx = audio_rep_idx; >>> + c->cur_audio = rep; >>> + } >>> + } >>> + } >>> + >>> + video_rep_idx += type == AVMEDIA_TYPE_VIDEO; >>> + audio_rep_idx += type == AVMEDIA_TYPE_AUDIO; >>> + >>> +end: >>> + if (rep_id_val) >>> + av_free(rep_id_val); >>> + if (rep_bandwidth_val) >>> + av_free(rep_bandwidth_val); >>> + >>> + return ret; >>> +} >>> + >>> +static int parse_manifest_adaptationset(AVFormatContext *s, const char >>> *url, >>> + xmlNodePtr adaptionset_node, >>> + xmlNodePtr mpd_baseurl_node, >>> + xmlNodePtr period_baseurl_node) >>> +{ >>> + int ret = 0; >>> + xmlNodePtr fragment_template_node = NULL; >>> + xmlNodePtr content_component_node = NULL; >>> + xmlNodePtr adaptionset_baseurl_node = NULL; >>> + xmlNodePtr node = NULL; >>> + >>> + node = xmlFirstElementChild(adaptionset_node); >>> + while (node) { >>> + if (!av_strcasecmp(node->name, (const char *)"SegmentTemplate")) { >>> + fragment_template_node = node; >>> + } else if (!av_strcasecmp(node->name, (const char >>> *)"ContentComponent")) { >>> + content_component_node = node; >>> + } else if (!av_strcasecmp(node->name, (const char *)"BaseURL")) { >>> + adaptionset_baseurl_node = node; >>> + } else if (!av_strcasecmp(node->name, (const char >>> *)"Representation")) { >>> + ret = parse_manifest_representation(s, url, node, >>> + adaptionset_node, >>> + mpd_baseurl_node, >>> + period_baseurl_node, >>> + fragment_template_node, >>> + content_component_node, >>> + adaptionset_baseurl_node); >>> + if (ret < 0) { >>> + return ret; >>> + } >>> + } >>> + node = xmlNextElementSibling(node); >>> + } >>> + return 0; >>> +} >>> + >>> +static int parse_manifest(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; >>> + AVDictionary *opts = NULL; >>> + xmlDoc *doc = NULL; >>> + xmlNodePtr root_element = NULL; >>> + xmlNodePtr node = NULL; >>> + xmlNodePtr period_node = NULL; >>> + xmlNodePtr mpd_baseurl_node = NULL; >>> + xmlNodePtr period_baseurl_node = NULL; >>> + xmlNodePtr adaptionset_node = NULL; >>> + xmlAttrPtr attr = NULL; >>> + char *val = NULL; >>> + uint32_t perdiod_duration_sec = 0; >>> + uint32_t perdiod_start_sec = 0; >>> + int32_t audio_rep_idx = 0; >>> + int32_t video_rep_idx = 0; >>> + >>> + if (!in) { >>> + close_in = 1; >>> + >>> + set_httpheader_options(c, opts); >>> + 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) { >>> + av_free(c->base_url); >>> + return AVERROR(ENOMEM); >>> + } >>> + >>> + filesize = avio_read(in, buffer, filesize); >>> + if (filesize <= 0) { >>> + av_log(s, AV_LOG_ERROR, "Unable to read to offset '%s'\n", url); >>> + ret = AVERROR_INVALIDDATA; >>> + } else { >>> + 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 || >>> + av_strcasecmp(node->name, (const char *)"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 (!av_strcasecmp(val, (const char *)"dynamic")) >>> + c->is_live = 1; >>> + av_free(val); >>> + >>> + attr = node->properties; >>> + while (attr) { >>> + val = xmlGetProp(node, attr->name); >>> + >>> + if (!av_strcasecmp(attr->name, (const char >>> *)"availabilityStartTime")) { >>> + c->availability_start_time = get_utc_date_time_insec(s, >>> (const char *)val); >>> + } else if (!av_strcasecmp(attr->name, (const char >>> *)"publishTime")) { >>> + c->publish_time = get_utc_date_time_insec(s, (const char >>> *)val); >>> + } else if (!av_strcasecmp(attr->name, (const char >>> *)"minimumUpdatePeriod")) { >>> + c->minimum_update_period = get_duration_insec(s, (const >>> char *)val); >>> + } else if (!av_strcasecmp(attr->name, (const char >>> *)"timeShiftBufferDepth")) { >>> + c->time_shift_buffer_depth = get_duration_insec(s, (const >>> char *)val); >>> + } else if (!av_strcasecmp(attr->name, (const char >>> *)"minBufferTime")) { >>> + c->min_buffer_time = get_duration_insec(s, (const char >>> *)val); >>> + } else if (!av_strcasecmp(attr->name, (const char >>> *)"suggestedPresentationDelay")) { >>> + c->suggested_presentation_delay = get_duration_insec(s, >>> (const char *)val); >>> + } else if (!av_strcasecmp(attr->name, (const char >>> *)"mediaPresentationDuration")) { >>> + c->media_presentation_duration = get_duration_insec(s, >>> (const char *)val); >>> + } >>> + attr = attr->next; >>> + av_free(val); >>> + } >>> + >>> + mpd_baseurl_node = find_child_node_by_name(node, "BaseURL"); >>> + >>> + // at now we can handle only one period, with the longest duration >>> + node = xmlFirstElementChild(node); >>> + while (node) { >>> + if (!av_strcasecmp(node->name, (const char *)"Period")) { >>> + perdiod_duration_sec = 0; >>> + perdiod_start_sec = 0; >>> + attr = node->properties; >>> + while (attr) { >>> + val = xmlGetProp(node, attr->name); >>> + if (!av_strcasecmp(attr->name, (const char >>> *)"duration")) { >>> + perdiod_duration_sec = get_duration_insec(s, >>> (const char *)val); >>> + } else if (!av_strcasecmp(attr->name, (const char >>> *)"start")) { >>> + perdiod_start_sec = get_duration_insec(s, (const >>> char *)val); >>> + } >>> + attr = attr->next; >>> + av_free(val); >>> + } >>> + if ((perdiod_duration_sec) >= (c->period_duration)) { >>> + period_node = node; >>> + c->period_duration = perdiod_duration_sec; >>> + c->period_start = perdiod_start_sec; >>> + if (c->period_start > 0) >>> + c->media_presentation_duration = >>> c->period_duration; >>> + } >>> + } >>> + node = xmlNextElementSibling(node); >>> + } >>> + if (!period_node) { >>> + av_log(s, AV_LOG_ERROR, "Unable to parse '%s' - missing Period >>> node\n", url); >>> + ret = AVERROR_INVALIDDATA; >>> + goto cleanup; >>> + } >>> + >>> + adaptionset_node = xmlFirstElementChild(period_node); >>> + while (adaptionset_node) { >>> + if (!av_strcasecmp(adaptionset_node->name, (const char >>> *)"BaseURL")) { >>> + period_baseurl_node = adaptionset_node; >>> + } else if (!av_strcasecmp(adaptionset_node->name, (const char >>> *)"AdaptationSet")) { >>> + parse_manifest_adaptationset(s, url, adaptionset_node, >>> mpd_baseurl_node, period_baseurl_node); >>> + } >>> + adaptionset_node = xmlNextElementSibling(adaptionset_node); >>> + } >>> + if (c->cur_video) { >>> + c->cur_video->rep_count = video_rep_idx; >>> + 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)video_rep_idx); >>> + } >>> + if (c->cur_audio) { >>> + c->cur_audio->rep_count = audio_rep_idx; >>> + } >>> +cleanup: >>> + /*free the document */ >>> + xmlFreeDoc(doc); >>> + xmlCleanupParser(); >>> + } >>> + >>> + av_free(new_url); >>> + av_free(buffer); >>> + if (close_in) { >>> + avio_close(in); >>> + } >>> + return ret; >>> +} >>> + >>> +static int64_t calc_cur_seg_no(AVFormatContext *s, struct representation >>> *pls) >>> +{ >>> + DASHContext *c = s->priv_data; >>> + int64_t num = 0; >>> + int64_t start_time_offset = 0; >>> + >>> + if (c->is_live) { >>> + if (pls->n_fragments) { >>> + num = pls->first_seq_no; >>> + } else if (pls->n_timelines) { >>> + start_time_offset = >>> get_segment_start_time_based_on_timeline(pls, 0xFFFFFFFF) - >>> pls->timelines[pls->first_seq_no]->starttime; // total duration of playlist >>> + if (start_time_offset < 60 * pls->fragment_timescale) >>> + start_time_offset = 0; >>> + else >>> + start_time_offset = start_time_offset - 60 * >>> pls->fragment_timescale; >>> + >>> + num = calc_next_seg_no_from_timelines(pls, >>> pls->timelines[pls->first_seq_no]->starttime + start_time_offset); >>> + if (num == -1) >>> + num = pls->first_seq_no; >>> + } else if (pls->fragment_duration){ >>> + if (pls->presentation_timeoffset) { >>> + num = pls->presentation_timeoffset * >>> pls->fragment_timescale / pls->fragment_duration; >>> + } else if (c->publish_time > 0 && !c->availability_start_time) >>> { >>> + num = pls->first_seq_no + (((c->publish_time - >>> c->availability_start_time) - c->suggested_presentation_delay) * >>> pls->fragment_timescale) / pls->fragment_duration; >>> + } else { >>> + num = pls->first_seq_no + (((get_current_time_in_sec() - >>> c->availability_start_time) - c->suggested_presentation_delay) * >>> pls->fragment_timescale) / pls->fragment_duration; >>> + } >>> + } >>> + } else { >>> + num = pls->first_seq_no; >>> + } >>> + return num; >>> +} >>> + >>> +static int64_t calc_min_seg_no(AVFormatContext *s, struct representation >>> *pls) >>> +{ >>> + DASHContext *c = s->priv_data; >>> + int64_t num = 0; >>> + >>> + if (c->is_live && pls->fragment_duration) { >>> + num = pls->first_seq_no + (((get_current_time_in_sec() - >>> c->availability_start_time) - c->time_shift_buffer_depth) * >>> pls->fragment_timescale) / pls->fragment_duration; >>> + } else { >>> + num = pls->first_seq_no; >>> + } >>> + return num; >>> +} >>> + >>> +static int64_t calc_max_seg_no(struct representation *pls) >>> +{ >>> + DASHContext *c = pls->parent->priv_data; >>> + int64_t num = 0; >>> + >>> + if (pls->n_fragments) { >>> + num = pls->first_seq_no + pls->n_fragments - 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]->repeat; >>> + } >>> + } else if (c->is_live && pls->fragment_duration) { >>> + num = pls->first_seq_no + (((get_current_time_in_sec() - >>> c->availability_start_time)) * pls->fragment_timescale) / >>> pls->fragment_duration; >>> + } else if (pls->fragment_duration) { >>> + num = pls->first_seq_no + (c->media_presentation_duration * >>> pls->fragment_timescale) / pls->fragment_duration; >>> + } >>> + >>> + return num; >>> +} >>> + >>> +static void move_timelines(struct representation *rep_src, struct >>> representation *rep_dest) >>> +{ >>> + if (rep_dest && rep_src ) { >>> + 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); >>> + 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) >>> +{ >>> + if (rep_dest && rep_src ) { >>> + free_fragment_list(rep_dest); >>> + if (rep_src->start_number > (rep_dest->start_number + >>> rep_dest->n_fragments)) >>> + rep_dest->cur_seq_no = 0; >>> + else >>> + rep_dest->cur_seq_no += rep_src->start_number - >>> rep_dest->start_number; >>> + rep_dest->fragments = rep_src->fragments; >>> + rep_dest->n_fragments = rep_src->n_fragments; >>> + rep_dest->parent = rep_src->parent; >>> + rep_dest->last_seq_no = calc_max_seg_no(rep_dest); >>> + rep_src->fragments = NULL; >>> + rep_src->n_fragments = 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_manifest(s, s->filename, NULL); >>> + if (ret) >>> + 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->fragment_timescale; >>> + if (cur_audio && cur_audio->timelines) >>> + currentAudioTime = >>> get_segment_start_time_based_on_timeline(cur_audio, cur_audio->cur_seq_no) >>> / cur_audio->fragment_timescale; >>> + // 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->fragment_timescale - 1); >>> + if (c->cur_video->cur_seq_no >= 0) { >>> + move_timelines(c->cur_video, cur_video); >>> + } >>> + } >>> + if (cur_audio && cur_audio->timelines) { >>> + c->cur_audio->cur_seq_no = >>> calc_next_seg_no_from_timelines(c->cur_audio, currentAudioTime * >>> cur_audio->fragment_timescale - 1); >>> + if (c->cur_audio->cur_seq_no >= 0) { >>> + move_timelines(c->cur_audio, cur_audio); >>> + } >>> + } >>> + } >>> + if (cur_video && cur_video->fragments) { >>> + move_segments(c->cur_video, cur_video); >>> + } >>> + if (cur_audio && cur_audio->fragments) { >>> + move_segments(c->cur_audio, cur_audio); >>> + } >>> + >>> +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 struct fragment *get_current_fragment(struct representation *pls) >>> +{ >>> + int64_t min_seq_no = 0; >>> + int64_t max_seq_no = 0; >>> + struct fragment *seg = NULL; >>> + struct fragment *seg_ptr = NULL; >>> + DASHContext *c = pls->parent->priv_data; >>> + >>> + while (( !ff_check_interrupt(c->interrupt_callback)&& pls->n_fragments >>> > 0)) { >>> + if (pls->cur_seq_no < pls->n_fragments) { >>> + seg_ptr = pls->fragments[pls->cur_seq_no]; >>> + seg = av_mallocz(sizeof(struct fragment)); >>> + if (!seg) { >>> + return NULL; >>> + } >>> + seg->url = av_strdup(seg_ptr->url); >>> + if (!seg->url) { >>> + av_free(seg); >>> + return NULL; >>> + } >>> + seg->size = seg_ptr->size; >>> + seg->url_offset = seg_ptr->url_offset; >>> + return seg; >>> + } else if (c->is_live) { >>> + refresh_manifest(pls->parent); >>> + } else { >>> + break; >>> + } >>> + } >>> + if (c->is_live) { >>> + min_seq_no = calc_min_seg_no(pls->parent, pls); >>> + max_seq_no = calc_max_seg_no(pls); >>> + >>> + if (pls->timelines || pls->fragments) { >>> + refresh_manifest(pls->parent); >>> + } >>> + if (pls->cur_seq_no <= min_seq_no) { >>> + av_log(pls->parent, AV_LOG_VERBOSE, "old fragment: >>> cur[%"PRId64"] min[%"PRId64"] max[%"PRId64"], playlist %d\n", >>> (int64_t)pls->cur_seq_no, min_seq_no, max_seq_no, (int)pls->rep_idx); >>> + pls->cur_seq_no = calc_cur_seg_no(pls->parent, pls); >>> + } else if (pls->cur_seq_no > max_seq_no) { >>> + av_log(pls->parent, AV_LOG_VERBOSE, "new fragment: >>> min[%"PRId64"] max[%"PRId64"], playlist %d\n", min_seq_no, max_seq_no, >>> (int)pls->rep_idx); >>> + } >>> + seg = av_mallocz(sizeof(struct fragment)); >>> + if (!seg) { >>> + return NULL; >>> + } >>> + } else if (pls->cur_seq_no <= pls->last_seq_no) { >>> + seg = av_mallocz(sizeof(struct fragment)); >>> + if (!seg) { >>> + return NULL; >>> + } >>> + } >>> + if (seg) { >>> + char tmpfilename[MAX_URL_SIZE]; >>> + >>> + ff_dash_fill_tmpl_params(tmpfilename, sizeof(tmpfilename), >>> pls->url_template, 0, pls->cur_seq_no, 0, >>> get_segment_start_time_based_on_timeline(pls, pls->cur_seq_no)); >>> + seg->url = av_strireplace(pls->url_template, pls->url_template, >>> tmpfilename); >>> + if (!seg->url) { >>> + av_log(pls->parent, AV_LOG_WARNING, "Unable to resolve >>> template url '%s', try to use origin template\n", pls->url_template); >>> + seg->url = av_strdup(pls->url_template); >>> + if (!seg->url) { >>> + av_log(pls->parent, AV_LOG_ERROR, "Cannot resolve template >>> url '%s'\n", pls->url_template); >>> + return NULL; >>> + } >>> + } >>> + >>> + seg->size = -1; >>> + } >>> + >>> + return seg; >>> +} >>> + >>> +enum ReadFromURLMode { >>> + READ_NORMAL, >>> + READ_COMPLETE, >>> +}; >>> + >>> +static int read_from_url(struct representation *pls, struct fragment *seg, >>> + uint8_t *buf, int buf_size, >>> + enum ReadFromURLMode mode) >>> +{ >>> + int ret; >>> + >>> + /* limit read if the fragment 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(pls->parent, AV_LOG_WARNING, "Could not read complete >>> fragment.\n"); >>> + } >>> + } else { >>> + ret = avio_read(pls->input, buf, buf_size); >>> + } >>> + if (ret > 0) >>> + pls->cur_seg_offset += ret; >>> + >>> + return ret; >>> +} >>> + >>> +static int open_input(DASHContext *c, struct representation *pls, struct >>> fragment *seg) >>> +{ >>> + AVDictionary *opts = NULL; >>> + char url[MAX_URL_SIZE]; >>> + int ret; >>> + >>> + set_httpheader_options(c, opts); >>> + 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 && 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 fragment '%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; >>> + >>> + 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; >>> + >>> + 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_fragments && !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) >>> +{ >>> + int ret = 0; >>> + struct representation *v = opaque; >>> + DASHContext *c = v->parent->priv_data; >>> + >>> +restart: >>> + if (!v->input) { >>> + free_fragment(&v->cur_seg); >>> + v->cur_seg = get_current_fragment(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 fragment of >>> playlist %d\n", v->rep_idx); >>> + v->cur_seq_no++; >>> + goto restart; >>> + } >>> + } >>> + >>> + if (v->init_sec_buf_read_offset < v->init_sec_data_len) { >>> + /* Push init section out first before first actual fragment */ >>> + 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; >>> + } >>> + >>> + /* check the v->cur_seg, if it is null, get current and double check >>> if the new v->cur_seg*/ >>> + if (!v->cur_seg) { >>> + v->cur_seg = get_current_fragment(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; >>> + >>> + if (!v->is_restart_needed) >>> + v->cur_seq_no++; >>> + v->is_restart_needed = 1; >>> + >>> +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[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; >>> + 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 fragment, >>> playlist %d\n", (int)pls->rep_idx); >>> + avformat_free_context(pls->ctx); >>> + pls->ctx = NULL; >>> + goto fail; >>> + } >>> + >>> + pls->ctx->pb = &pls->pb; >>> + pls->ctx->io_open = nested_io_open; >>> + >>> + // provide additional information from mpd if available >>> + 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_fragments) { >>> + ret = avformat_find_stream_info(pls->ctx, NULL); >>> + if (ret < 0) >>> + goto fail; >>> + } >>> + >>> +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(s, pls); >>> + pls->last_seq_no = calc_max_seg_no(pls); >>> + >>> + 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_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_manifest(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->media_presentation_duration * >>> AV_TIME_BASE; >>> + } >>> + >>> + /* Open the demuxer for curent video and current audio components if >>> available */ >>> + if (!ret && c->cur_video) { >>> + ret = open_demux_for_component(s, c->cur_video); >>> + if (!ret) { >>> + c->cur_video->stream_index = stream_index; >>> + ++stream_index; >>> + } else { >>> + free_representation(c->cur_video); >>> + c->cur_video = NULL; >>> + } >>> + } >>> + >>> + if (!ret && c->cur_audio) { >>> + ret = open_demux_for_component(s, c->cur_audio); >>> + if (!ret) { >>> + c->cur_audio->stream_index = stream_index; >>> + ++stream_index; >>> + } else { >>> + free_representation(c->cur_audio); >>> + c->cur_audio = NULL; >>> + } >>> + } >>> + >>> + if (!stream_index) { >>> + ret = AVERROR_INVALIDDATA; >>> + goto fail; >>> + } >>> + >>> + /* Create a program */ >>> + if (!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_video; >>> + } else { >>> + cur = c->cur_audio; >>> + } >>> + >>> + if (cur->ctx) { >>> + while (!ff_check_interrupt(c->interrupt_callback) && !ret) { >>> + ret = av_read_frame(cur->ctx, pkt); >>> + if (ret >= 0) { >>> + /* If we got a packet, return it */ >>> + 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; >>> + return 0; >>> + } >>> + if (cur->is_restart_needed) { >>> + 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); >>> + 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 seek_pos_msec, int flags) >>> +{ >>> + int ret = 0; >>> + int i = 0; >>> + int j = 0; >>> + int64_t duration = 0; >>> + >>> + av_log(pls->parent, AV_LOG_VERBOSE, "DASH seek pos[%"PRId64"ms], >>> playlist %d\n", seek_pos_msec, pls->rep_idx); >>> + >>> + // single fragment mode >>> + if (pls->n_fragments == 1) { >>> + pls->cur_timestamp = 0; >>> + pls->cur_seg_offset = 0; >>> + ff_read_frame_flush(pls->ctx); >>> + return av_seek_frame(pls->ctx, -1, seek_pos_msec * 1000, flags); >>> + } >>> + >>> + if (pls->input) >>> + ff_format_io_close(pls->parent, &pls->input); >>> + >>> + // find the nearest fragment >>> + if (pls->n_timelines > 0 && pls->fragment_timescale > 0) { >>> + 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]->starttime > 0) { >>> + duration = pls->timelines[i]->starttime; >>> + } >>> + duration += pls->timelines[i]->duration; >>> + if (seek_pos_msec < ((duration * 1000) / >>> pls->fragment_timescale)) { >>> + goto set_seq_num; >>> + } >>> + for (j = 0; j < pls->timelines[i]->repeat; j++) { >>> + duration += pls->timelines[i]->duration; >>> + num++; >>> + if (seek_pos_msec < ((duration * 1000) / >>> pls->fragment_timescale)) { >>> + goto set_seq_num; >>> + } >>> + } >>> + num++; >>> + } >>> + >>> +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->fragment_duration > 0) { >>> + pls->cur_seq_no = pls->first_seq_no + ((seek_pos_msec * >>> pls->fragment_timescale) / pls->fragment_duration) / 1000; >>> + } else { >>> + av_log(pls->parent, AV_LOG_ERROR, "dash_seek missing >>> fragment_duration\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 seek_pos_msec = 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, seek_pos_msec, flags); >>> + } >>> + if (!ret && c->cur_video) { >>> + ret = dash_seek(s, c->cur_video, seek_pos_msec, flags); >>> + } >>> + return ret; >>> +} >>> + >>> +static int dash_probe(AVProbeData *p) >>> +{ >>> + if (!av_stristr(p->buf, "<MPD")) >>> + return 0; >>> + >>> + if (av_stristr(p->buf, "dash:profile:isoff-on-demand:2011") || >>> + av_stristr(p->buf, "dash:profile:isoff-live:2011") || >>> + av_stristr(p->buf, "dash:profile:isoff-live:2012") || >>> + av_stristr(p->buf, "dash:profile:isoff-main:2011")) { >>> + return AVPROBE_SCORE_MAX; >>> + } >>> + if (av_stristr(p->buf, "dash:profile")) { >>> + return AVPROBE_SCORE_MAX; >>> + } >>> + >>> + return 0; >>> +} >>> + >>> +#define OFFSET(x) offsetof(DASHContext, x) >>> +#define FLAGS AV_OPT_FLAG_DECODING_PARAM >>> +static const AVOption dash_options[] = { >>> + {"allowed_extensions", "List of file extensions that dash is allowed >>> to access", >>> + OFFSET(allowed_extensions), AV_OPT_TYPE_STRING, >>> + {.str = "aac,m4a,m4s,m4v,mov,mp4"}, >>> + 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, >>> +}; >>> -- >>> 2.11.0 (Apple Git-81) >>> >>> >>> >>> _______________________________________________ >>> ffmpeg-devel mailing list >>> ffmpeg-devel@ffmpeg.org >>> http://ffmpeg.org/mailman/listinfo/ffmpeg-devel >> >> >> ping. > I'll push this if there are no objections.
pushed! Thanks _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
