fix for ext-discontinuity

fftools/cmdutils.c

@@ -1145,14 +1145,14 @@ static void print_program_info(int flags, int level)
 {
     const char *indent = flags & INDENT? "  " : "";
 
-    av_log(NULL, level, "%s version -  Customized for MPD-PHP" FFMPEG_VERSION, program_name);
+    av_log(NULL, level, "%s customized for MPD-PHP version " FFMPEG_VERSION, program_name);
     if (flags & SHOW_COPYRIGHT)
         av_log(NULL, level, " Copyright (c) %d-%d the FFmpeg developers",
                program_birth_year, CONFIG_THIS_YEAR);
     av_log(NULL, level, "\n");
-    av_log(NULL, level, "%sbuilt with %s\n", indent, CC_IDENT);
+    // av_log(NULL, level, "%sbuilt with %s\n", indent, CC_IDENT);
 
-    av_log(NULL, level, "%sconfiguration: " FFMPEG_CONFIGURATION "\n", indent);
+    // av_log(NULL, level, "%sconfiguration: " FFMPEG_CONFIGURATION "\n", indent);
 }
 
 static void print_buildconf(int flags, int level)
@@ -1185,7 +1185,6 @@ void show_banner(int argc, char **argv, const OptionDef *options)
 {
     int idx = locate_option(argc, argv, options, "version");
     if (hide_banner || idx)
-        print_program_info (INDENT|SHOW_COPYRIGHT, AV_LOG_INFO);
         return;
 
     print_program_info (INDENT|SHOW_COPYRIGHT, AV_LOG_INFO);

libavformat/Makefile

@@ -148,6 +148,7 @@ OBJS-$(CONFIG_DATA_DEMUXER)              += rawdec.o
 OBJS-$(CONFIG_DATA_MUXER)                += rawenc.o
 OBJS-$(CONFIG_DASH_MUXER)                += dash.o dashenc.o hlsplaylist.o
 OBJS-$(CONFIG_DASH_DEMUXER)              += dash.o dashdec.o
+OBJS-$(CONFIG_SMOOTHSTREAMING_DEMUXER)   += smoothstreamingdec.o
 OBJS-$(CONFIG_DAUD_DEMUXER)              += dauddec.o
 OBJS-$(CONFIG_DAUD_MUXER)                += daudenc.o
 OBJS-$(CONFIG_DCSTR_DEMUXER)             += dcstr.o

libavformat/dashdec.c

@@ -27,6 +27,7 @@
 #include "internal.h"
 #include "avio_internal.h"
 #include "dash.h"
+#include "libavformat/isom.h"
 
 #define INITIAL_BUFFER_SIZE 32768
 #define MAX_MANIFEST_SIZE 50 * 1024
@@ -1878,6 +1879,7 @@ static int reopen_demux_for_component(AVFormatContext *s, struct representation
     ff_const59 AVInputFormat *in_fmt = NULL;
     AVDictionary  *in_fmt_opts = NULL;
     uint8_t *avio_ctx_buffer  = NULL;
+
     int ret = 0, i;
 
     if (pls->ctx) {
@@ -1926,7 +1928,28 @@ static int reopen_demux_for_component(AVFormatContext *s, struct representation
     pls->ctx->io_open  = nested_io_open;
 
     if (c->cenc_decryption_key)
-        av_dict_set(&in_fmt_opts, "decryption_key", c->cenc_decryption_key, 0);
+        // if cenc_decryption_key not contains any : or , it is a hex string
+        if (strchr(c->cenc_decryption_key, ':') == NULL && strchr(c->cenc_decryption_key, ',') == NULL) {
+            av_dict_set(&in_fmt_opts, "decryption_key", c->cenc_decryption_key, 0);
+        } else {
+            DecryptionKey *decryption_key_map = av_mallocz(sizeof(DecryptionKey *) * 2);
+            // if cenc_decryption_key contains : or , split it based on ,
+            char *key_id = av_strtok(c->cenc_decryption_key, ",", &c->cenc_decryption_key);
+            // if cenc_decryption_key contains : split it based on :
+            //create DecryptionKey array
+            *key_count = 0;
+            while (key_id != NULL && *key_count < 2) {
+                char* colon = strchr(key_id, ':');
+                if (colon != NULL) {
+                    *colon = '\0'; // Replace ':' with null-terminator
+                    strncpy(decryption_key_map[*key_count].key_id, key_id, MAX_STRING_LENGTH - 1);
+                    strncpy(decryption_key_map[*key_count].second, colon + 1, MAX_STRING_LENGTH - 1);
+                    (*key_count)++;
+                }
+                key_id = av_strtok(NULL, ",");
+            }
+            av_dict_set(&in_fmt_opts, "decryption_key_map", decryption_key_map, 0);
+        }
 
     // provide additional information from mpd if available
     ret = avformat_open_input(&pls->ctx, "", in_fmt, &in_fmt_opts); //pls->init_section->url

libavformat/hls.c

@@ -66,7 +66,9 @@ enum KeyType {
 };
 
 struct segment {
+    int64_t previous_duration;
     int64_t duration;
+    int64_t start_time;
     int64_t url_offset;
     int64_t size;
     char *url;
@@ -716,7 +718,7 @@ static int parse_playlist(HLSContext *c, const char *url,
                           struct playlist *pls, AVIOContext *in)
 {
     int ret = 0, is_segment = 0, is_variant = 0;
-    int64_t duration = 0;
+    int64_t duration = 0, previous_duration1 = 0, previous_duration = 0, total_duration = 0;
     enum KeyType key_type = KEY_NONE;
     uint8_t iv[16] = "";
     int has_iv = 0;
@@ -874,6 +876,8 @@ static int parse_playlist(HLSContext *c, const char *url,
         } else if (av_strstart(line, "#EXT-X-ENDLIST", &ptr)) {
             if (pls)
                 pls->finished = 1;
+        } else if (av_strstart(line, "#EXT-X-DISCONTINUITY", &ptr)) {
+            previous_duration = previous_duration1;
         } else if (av_strstart(line, "#EXTINF:", &ptr)) {
             is_segment = 1;
             duration   = atof(ptr) * AV_TIME_BASE;
@@ -903,6 +907,14 @@ static int parse_playlist(HLSContext *c, const char *url,
                     ret = AVERROR(ENOMEM);
                     goto fail;
                 }
+                
+                previous_duration1 += duration;
+                seg->previous_duration = previous_duration;
+                seg->start_time = total_duration;
+                total_duration += duration;
+                seg->duration = duration;
+                seg->key_type = key_type;
+                
                 if (has_iv) {
                     memcpy(seg->iv, iv, sizeof(iv));
                 } else {
@@ -949,8 +961,9 @@ static int parse_playlist(HLSContext *c, const char *url,
                                     " set to default value to 1ms.\n", seg->url);
                     duration = 0.001 * AV_TIME_BASE;
                 }
-                seg->duration = duration;
-                seg->key_type = key_type;
+                // seg->duration = duration;
+                // seg->key_type = key_type;
+
                 dynarray_add(&pls->segments, &pls->n_segments, seg);
                 is_segment = 0;
 
@@ -2257,6 +2270,29 @@ static int hls_read_packet(AVFormatContext *s, AVPacket *pkt)
                                             ist->time_base,
                                             AV_TIME_BASE_Q);
 
+        if (c->playlists[minplaylist]->finished) {
+            struct playlist *pls = c->playlists[minplaylist];
+            int seq_no = pls->cur_seq_no - pls->start_seq_no;
+            if (seq_no < pls->n_segments && s->streams[pkt->stream_index]) {
+                struct segment *seg = pls->segments[seq_no];
+                int64_t pred = av_rescale_q(seg->previous_duration,
+                                            AV_TIME_BASE_Q,
+                                            s->streams[pkt->stream_index]->time_base);
+                int64_t max_ts = av_rescale_q(seg->start_time + seg->duration,
+                                              AV_TIME_BASE_Q,
+                                              s->streams[pkt->stream_index]->time_base);
+                /* EXTINF duration is not precise enough */
+                max_ts += 2 * AV_TIME_BASE;
+                if (s->start_time > 0) {
+                    max_ts += av_rescale_q(s->start_time,
+                                           AV_TIME_BASE_Q,
+                                           s->streams[pkt->stream_index]->time_base);
+                }
+                if (pkt->dts != AV_NOPTS_VALUE && pkt->dts + pred < max_ts) pkt->dts += pred;
+                if (pkt->pts != AV_NOPTS_VALUE && pkt->pts + pred < max_ts) pkt->pts += pred;
+            }
+        }
+
         /* There may be more situations where this would be useful, but this at least
          * handles newly probed codecs properly (i.e. request_probe by mpegts). */
         if (ist->codecpar->codec_id != st->codecpar->codec_id) {

libavformat/isom.h

@@ -155,6 +155,11 @@ typedef struct MOVIndexRange {
     int64_t end;
 } MOVIndexRange;
 
+typedef struct DecryptionKey {
+    uint8_t key_id;
+    uint8_t decryption_key;
+} DecryptionKey;
+
 typedef struct MOVStreamContext {
     AVIOContext *pb;
     int pb_is_copied;
@@ -291,6 +296,8 @@ typedef struct MOVContext {
     int decryption_key_len;
     int enable_drefs;
     int32_t movie_display_matrix[3][3]; ///< display matrix from mvhd
+    DecryptionKey *decryption_key_map; // array of decryption keys for each track
+    int decryption_key_map_size;
 } MOVContext;
 
 int ff_mp4_read_descr_len(AVIOContext *pb);

libavformat/mov.c

@@ -6700,6 +6700,62 @@ static int cenc_decrypt(MOVContext *c, MOVStreamContext *sc, AVEncryptionInfo *s
     return 0;
 }
 
+static int cenc_decrypt_with_key(MOVContext *c, MOVStreamContext *sc, AVEncryptionInfo *sample, uint8_t *input, uint8_t *decryption_key, int size)
+{
+    int i, ret;
+
+    if (sample->scheme != MKBETAG('c','e','n','c') || sample->crypt_byte_block != 0 || sample->skip_byte_block != 0) {
+        av_log(c->fc, AV_LOG_ERROR, "Only the 'cenc' encryption scheme is supported\n");
+        return AVERROR_PATCHWELCOME;
+    }
+
+    if (!sc->cenc.aes_ctr) {
+        /* initialize the cipher */
+        sc->cenc.aes_ctr = av_aes_ctr_alloc();
+        if (!sc->cenc.aes_ctr) {
+            return AVERROR(ENOMEM);
+        }
+
+        ret = av_aes_ctr_init(sc->cenc.aes_ctr, decryption_key);
+        if (ret < 0) {
+            return ret;
+        }
+    }
+
+    av_aes_ctr_set_full_iv(sc->cenc.aes_ctr, sample->iv);
+
+    if (!sample->subsample_count)
+    {
+        /* decrypt the whole packet */
+        av_aes_ctr_crypt(sc->cenc.aes_ctr, input, input, size);
+        return 0;
+    }
+
+    for (i = 0; i < sample->subsample_count; i++)
+    {
+        if (sample->subsamples[i].bytes_of_clear_data + sample->subsamples[i].bytes_of_protected_data > size) {
+            av_log(c->fc, AV_LOG_ERROR, "subsample size exceeds the packet size left\n");
+            return AVERROR_INVALIDDATA;
+        }
+
+        /* skip the clear bytes */
+        input += sample->subsamples[i].bytes_of_clear_data;
+        size -= sample->subsamples[i].bytes_of_clear_data;
+
+        /* decrypt the encrypted bytes */
+        av_aes_ctr_crypt(sc->cenc.aes_ctr, input, input, sample->subsamples[i].bytes_of_protected_data);
+        input += sample->subsamples[i].bytes_of_protected_data;
+        size -= sample->subsamples[i].bytes_of_protected_data;
+    }
+
+    if (size > 0) {
+        av_log(c->fc, AV_LOG_ERROR, "leftover packet bytes after subsample processing\n");
+        return AVERROR_INVALIDDATA;
+    }
+
+    return 0;
+}
+
 static int cenc_filter(MOVContext *mov, AVStream* st, MOVStreamContext *sc, AVPacket *pkt, int current_index)
 {
     MOVFragmentStreamInfo *frag_stream_info;
@@ -6749,6 +6805,40 @@ static int cenc_filter(MOVContext *mov, AVStream* st, MOVStreamContext *sc, AVPa
 
         if (mov->decryption_key) {
             return cenc_decrypt(mov, sc, encrypted_sample, pkt->data, pkt->size);
+        } else if (mov->decryption_key_map) {
+            uint8_t *key_id = encrypted_sample->key_id;
+            uint8_t *dec_key = NULL;
+            // check size of decryption_key_map size
+            if (mov->decryption_key_map_size == 1) {
+                dec_key = mov->decryption_key_map[0].decryption_key;
+            } else {
+                // find the decryption key for the given key ID
+                for (int i = 0; i < mov->decryption_key_map_size; i++) {
+                    // if the key id is equals with the key id in the map
+                    if (key_id == mov->decryption_key_map[i].key_id) {
+                        dec_key = mov->decryption_key_map[i].decryption_key;
+                        break;
+                    }
+                }
+            }
+            if (!dec_key) {
+                av_log(mov->fc, AV_LOG_ERROR, "No decryption key found for the given key ID\n");
+                return AVERROR_INVALIDDATA;
+            }
+            if (!encrypted_sample->subsample_count) {
+                // Decrypt the whole packet.
+                ret = av_aes_ctr_init(&sc->cenc.aes_ctr, dec_key);
+                if (ret < 0) {
+                    return ret;
+                }
+                av_aes_ctr_crypt(&sc->cenc.aes_ctr, pkt->data, pkt->data, pkt->size);
+            } else {
+                // Decrypt the subsamples.
+                ret = cenc_decrypt_with_key(mov, sc, encrypted_sample, pkt->data, dec_key, pkt->size);
+                if (ret < 0) {
+                    return ret;
+                }
+            }
         } else {
             size_t size;
             uint8_t *side_data = av_encryption_info_add_side_data(encrypted_sample, &size);
@@ -8219,6 +8309,7 @@ static const AVOption mov_options[] = {
         AV_OPT_TYPE_BINARY, {.str="77214d4b196a87cd520045fd20a51d67"},
         .flags = AV_OPT_FLAG_DECODING_PARAM },
     { "decryption_key", "The media decryption key (hex)", OFFSET(decryption_key), AV_OPT_TYPE_BINARY, .flags = AV_OPT_FLAG_DECODING_PARAM },
+    { "decryption_key_map", "The media decryption kid:key (hex) support up to 2", OFFSET(decryption_key_map), AV_OPT_TYPE_BINARY, .flags = AV_OPT_FLAG_DECODING_PARAM },
     { "enable_drefs", "Enable external track support.", OFFSET(enable_drefs), AV_OPT_TYPE_BOOL,
         {.i64 = 0}, 0, 1, FLAGS },
 

libavformat/smoothstreamingdec.c

@@ -0,0 +1,301 @@
+/*
+ * HTTP Smooth  Streaming based on DASH demuxer
+ * Copyright (c) 2017 samsamsam@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
+#define MAX_MANIFEST_SIZE 50 * 1024
+#define DEFAULT_MANIFEST_SIZE 8 * 1024
+
+typedef struct SmoothStreamingContext {
+    const AVClass *class;
+    char *base_url;
+    int is_live;
+    AVIOInterruptCB *interrupt_callback;
+    char *allowed_extensions;
+    AVDictionary *avio_opts;
+    int max_url_size;
+    char *cenc_decryption_key;
+
+    /* Flags for init section*/
+    int is_init_section_common_video;
+    int is_init_section_common_audio;
+
+} SmoothStreamingContext;
+
+static int ishttp(char *url)
+{
+    const char *proto_name = avio_find_protocol_name(url);
+    return av_strstart(proto_name, "http", NULL);
+}
+
+static int aligned(int val)
+{
+    return ((val + 0x3F) >> 6) << 6;
+}
+
+static int open_url(AVFormatContext *s, AVIOContext **pb, const char *url,
+                    AVDictionary **opts, AVDictionary *opts2, int *is_http)
+{
+    SmoothStreamingContext *c = s->priv_data;
+    AVDictionary *tmp = NULL;
+    const char *proto_name = NULL;
+    int ret;
+
+    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;
+
+    av_freep(pb);
+    av_dict_copy(&tmp, *opts, 0);
+    av_dict_copy(&tmp, opts2, 0);
+    ret = avio_open2(pb, url, AVIO_FLAG_READ, c->interrupt_callback, &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_dict_set(opts, "cookies", new_cookies, AV_DICT_DONT_STRDUP_VAL);
+        }
+
+    }
+
+    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,
+                             int max_url_size,
+                             char *rep_id_val,
+                             char *rep_bandwidth_val,
+                             char *val)
+{
+    int i;
+    char *text;
+    char *url = NULL;
+    char *tmp_str = av_mallocz(max_url_size);
+
+    if (!tmp_str)
+        return NULL;
+
+    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, max_url_size);
+                ff_make_absolute_url(tmp_str, max_url_size, "", text);
+                xmlFree(text);
+            }
+        }
+    }
+
+    if (val)
+        ff_make_absolute_url(tmp_str, max_url_size, tmp_str, val);
+
+    if (rep_id_val) {
+        url = av_strireplace(tmp_str, "$RepresentationID$", (const char*)rep_id_val);
+        if (!url) {
+            goto end;
+        }
+        av_strlcpy(tmp_str, url, max_url_size);
+    }
+    if (rep_bandwidth_val && tmp_str[0] != '\0') {
+        // free any previously assigned url before reassigning
+        av_free(url);
+        url = av_strireplace(tmp_str, "$Bandwidth$", (const char*)rep_bandwidth_val);
+        if (!url) {
+            goto end;
+        }
+    }
+end:
+    av_free(tmp_str);
+    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;
+                } else if (av_stristr((const char *)val, "text")) {
+                    type = AVMEDIA_TYPE_SUBTITLE;
+                }
+                xmlFree(val);
+            }
+        }
+    }
+    return type;
+}
+
+static int save_avio_options(AVFormatContext *s)
+{
+    SmoothStreamingContext *c = s->priv_data;
+    const char *opts[] = {
+        "headers", "user_agent", "cookies", "http_proxy", "referer", "rw_timeout", "icy", NULL };
+    const char **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;
+            } else {
+                av_freep(&buf);
+            }
+        }
+        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 SmoothStreaming playlist item '%s' referred to an external file '%s'. "
+           "Opening this file was forbidden for security reasons\n",
+           s->url, url);
+    return AVERROR(EPERM);
+}
+
+#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,webm,ts"},
+        INT_MIN, INT_MAX, FLAGS},
+    { "cenc_decryption_key", "Media decryption key (hex)", OFFSET(cenc_decryption_key), AV_OPT_TYPE_STRING, {.str = NULL}, INT_MIN, INT_MAX, .flags = 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,
+};