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dashdec.c File Reference
#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"

Go to the source code of this file.

Data Structures

struct  fragment
 
struct  timeline
 
struct  representation
 
struct  DASHContext
 

Macros

#define INITIAL_BUFFER_SIZE   32768
 
#define OFFSET(x)   offsetof(DASHContext, x)
 
#define FLAGS   AV_OPT_FLAG_DECODING_PARAM
 

Enumerations

enum  ReadFromURLMode { READ_NORMAL, READ_COMPLETE, READ_NORMAL, READ_COMPLETE }
 

Functions

static int ishttp (char *url)
 
static int aligned (int val)
 
static uint64_t get_current_time_in_sec (void)
 
static uint64_t get_utc_date_time_insec (AVFormatContext *s, const char *datetime)
 
static uint32_t get_duration_insec (AVFormatContext *s, const char *duration)
 
static int64_t get_segment_start_time_based_on_timeline (struct representation *pls, int64_t cur_seq_no)
 
static int64_t calc_next_seg_no_from_timelines (struct representation *pls, int64_t cur_time)
 
static void free_fragment (struct fragment **seg)
 
static void free_fragment_list (struct representation *pls)
 
static void free_timelines_list (struct representation *pls)
 
static void free_representation (struct representation *pls)
 
static void free_video_list (DASHContext *c)
 
static void free_audio_list (DASHContext *c)
 
static void set_httpheader_options (DASHContext *c, AVDictionary **opts)
 
static void update_options (char **dest, const char *name, void *src)
 
static int open_url (AVFormatContext *s, AVIOContext **pb, const char *url, AVDictionary *opts, AVDictionary *opts2, int *is_http)
 
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)
 
static char * get_val_from_nodes_tab (xmlNodePtr *nodes, const int n_nodes, const char *attrname)
 
static xmlNodePtr find_child_node_by_name (xmlNodePtr rootnode, const char *nodename)
 
static enum AVMediaType get_content_type (xmlNodePtr node)
 
static struct fragment * get_Fragment (char *range)
 
static int parse_manifest_segmenturlnode (AVFormatContext *s, struct representation *rep, xmlNodePtr fragmenturl_node, xmlNodePtr *baseurl_nodes, char *rep_id_val, char *rep_bandwidth_val)
 
static int parse_manifest_segmenttimeline (AVFormatContext *s, struct representation *rep, xmlNodePtr fragment_timeline_node)
 
static int resolve_content_path (AVFormatContext *s, const char *url, int *max_url_size, xmlNodePtr *baseurl_nodes, int n_baseurl_nodes)
 
static int parse_manifest_representation (AVFormatContext *s, const char *url, xmlNodePtr node, xmlNodePtr adaptionset_node, xmlNodePtr mpd_baseurl_node, xmlNodePtr period_baseurl_node, xmlNodePtr period_segmenttemplate_node, xmlNodePtr period_segmentlist_node, xmlNodePtr fragment_template_node, xmlNodePtr content_component_node, xmlNodePtr adaptionset_baseurl_node, xmlNodePtr adaptionset_segmentlist_node, xmlNodePtr adaptionset_supplementalproperty_node)
 
static int parse_manifest_adaptationset (AVFormatContext *s, const char *url, xmlNodePtr adaptionset_node, xmlNodePtr mpd_baseurl_node, xmlNodePtr period_baseurl_node, xmlNodePtr period_segmenttemplate_node, xmlNodePtr period_segmentlist_node)
 
static int parse_manifest (AVFormatContext *s, const char *url, AVIOContext *in)
 
static int64_t calc_cur_seg_no (AVFormatContext *s, struct representation *pls)
 
static int64_t calc_min_seg_no (AVFormatContext *s, struct representation *pls)
 
static int64_t calc_max_seg_no (struct representation *pls, DASHContext *c)
 
static void move_timelines (struct representation *rep_src, struct representation *rep_dest, DASHContext *c)
 
static void move_segments (struct representation *rep_src, struct representation *rep_dest, DASHContext *c)
 
static int refresh_manifest (AVFormatContext *s)
 
static struct fragment * get_current_fragment (struct representation *pls)
 
static int read_from_url (struct representation *pls, struct fragment *seg, uint8_t *buf, int buf_size, enum ReadFromURLMode mode)
 
static int open_input (DASHContext *c, struct representation *pls, struct fragment *seg)
 
static int update_init_section (struct representation *pls)
 
static int64_t seek_data (void *opaque, int64_t offset, int whence)
 
static int read_data (void *opaque, uint8_t *buf, int buf_size)
 
static int save_avio_options (AVFormatContext *s)
 
static int nested_io_open (AVFormatContext *s, AVIOContext **pb, const char *url, int flags, AVDictionary **opts)
 
static void close_demux_for_component (struct representation *pls)
 
static int reopen_demux_for_component (AVFormatContext *s, struct representation *pls)
 
static int open_demux_for_component (AVFormatContext *s, struct representation *pls)
 
static int dash_read_header (AVFormatContext *s)
 
static void recheck_discard_flags (AVFormatContext *s, struct representation **p, int n)
 
static int dash_read_packet (AVFormatContext *s, AVPacket *pkt)
 
static int dash_close (AVFormatContext *s)
 
static int dash_seek (AVFormatContext *s, struct representation *pls, int64_t seek_pos_msec, int flags, int dry_run)
 
static int dash_read_seek (AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
 
static int dash_probe (AVProbeData *p)
 

Variables

static const AVOption dash_options []
 
static const AVClass dash_class
 
AVInputFormat ff_dash_demuxer
 

Macro Definition Documentation

#define INITIAL_BUFFER_SIZE   32768

Definition at line 31 of file dashdec.c.

Referenced by reopen_demux_for_component().

#define OFFSET (   x)    offsetof(DASHContext, x)

Definition at line 2150 of file dashdec.c.

#define FLAGS   AV_OPT_FLAG_DECODING_PARAM

Definition at line 2151 of file dashdec.c.

Enumeration Type Documentation

enum ReadFromURLMode
Enumerator
READ_NORMAL 
READ_COMPLETE 
READ_NORMAL 
READ_COMPLETE 

Definition at line 1535 of file dashdec.c.

Function Documentation

static int ishttp ( char *  url)
static

Definition at line 154 of file dashdec.c.

Referenced by resolve_content_path().

static int aligned ( int  val)
static

Definition at line 160 of file dashdec.c.

Referenced by ff_avg_h264_qpel16_mc12_mmi(), ff_avg_h264_qpel16_mc21_mmi(), ff_avg_h264_qpel16_mc22_mmi(), ff_avg_h264_qpel16_mc23_mmi(), ff_avg_h264_qpel16_mc32_mmi(), ff_avg_h264_qpel8_mc12_mmi(), ff_avg_h264_qpel8_mc21_mmi(), ff_avg_h264_qpel8_mc22_mmi(), ff_avg_h264_qpel8_mc23_mmi(), ff_avg_h264_qpel8_mc32_mmi(), ff_check_alignment(), ff_put_h264_qpel16_mc12_mmi(), ff_put_h264_qpel16_mc21_mmi(), ff_put_h264_qpel16_mc22_mmi(), ff_put_h264_qpel16_mc23_mmi(), ff_put_h264_qpel16_mc32_mmi(), ff_put_h264_qpel8_mc12_mmi(), ff_put_h264_qpel8_mc21_mmi(), ff_put_h264_qpel8_mc22_mmi(), ff_put_h264_qpel8_mc23_mmi(), ff_put_h264_qpel8_mc32_mmi(), filter_frame(), mjpeg_decode_app(), parse_manifest_representation(), and resolve_content_path().

static uint64_t get_current_time_in_sec ( void  )
static

Definition at line 165 of file dashdec.c.

Referenced by calc_cur_seg_no(), calc_max_seg_no(), and calc_min_seg_no().

static uint64_t get_utc_date_time_insec ( AVFormatContext *  s,
const char *  datetime 
)
static

Definition at line 170 of file dashdec.c.

Referenced by parse_manifest().

static uint32_t get_duration_insec ( AVFormatContext *  s,
const char *  duration 
)
static

Definition at line 200 of file dashdec.c.

Referenced by parse_manifest().

static int64_t get_segment_start_time_based_on_timeline ( struct representation *  pls,
int64_t  cur_seq_no 
)
static

Definition at line 244 of file dashdec.c.

Referenced by calc_cur_seg_no(), get_current_fragment(), and refresh_manifest().

static int64_t calc_next_seg_no_from_timelines ( struct representation *  pls,
int64_t  cur_time 
)
static

Definition at line 273 of file dashdec.c.

Referenced by calc_cur_seg_no(), and refresh_manifest().

static void free_fragment ( struct fragment **  seg)
static

Definition at line 303 of file dashdec.c.

Referenced by free_fragment_list(), free_representation(), and read_data().

static void free_fragment_list ( struct representation *  pls)
static

Definition at line 312 of file dashdec.c.

Referenced by free_representation(), and move_segments().

static void free_timelines_list ( struct representation *  pls)
static

Definition at line 323 of file dashdec.c.

Referenced by free_representation(), and move_timelines().

static void free_representation ( struct representation *  pls)
static

Definition at line 334 of file dashdec.c.

Referenced by free_audio_list(), free_video_list(), and parse_manifest_representation().

static void free_video_list ( DASHContext *  c)
static

Definition at line 353 of file dashdec.c.

Referenced by dash_close(), and refresh_manifest().

static void free_audio_list ( DASHContext *  c)
static

Definition at line 364 of file dashdec.c.

Referenced by dash_close(), and refresh_manifest().

static void set_httpheader_options ( DASHContext *  c,
AVDictionary **  opts 
)
static

Definition at line 375 of file dashdec.c.

Referenced by open_input(), and parse_manifest().

static void update_options ( char **  dest,
const char *  name,
void *  src 
)
static

Definition at line 385 of file dashdec.c.

Referenced by dash_read_header().

static int open_url ( AVFormatContext *  s,
AVIOContext **  pb,
const char *  url,
AVDictionary *  opts,
AVDictionary *  opts2,
int *  is_http 
)
static

Definition at line 393 of file dashdec.c.

Referenced by open_input().

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 
)
static

Definition at line 461 of file dashdec.c.

Referenced by parse_manifest_representation(), and parse_manifest_segmenturlnode().

static char* get_val_from_nodes_tab ( xmlNodePtr *  nodes,
const int  n_nodes,
const char *  attrname 
)
static

Definition at line 517 of file dashdec.c.

Referenced by parse_manifest_representation().

static xmlNodePtr find_child_node_by_name ( xmlNodePtr  rootnode,
const char *  nodename 
)
static

Definition at line 533 of file dashdec.c.

Referenced by parse_manifest(), and parse_manifest_representation().

static enum AVMediaType get_content_type ( xmlNodePtr  node)
static

Definition at line 550 of file dashdec.c.

Referenced by parse_manifest_representation().

static struct fragment* get_Fragment ( char *  range)
static

Definition at line 574 of file dashdec.c.

Referenced by parse_manifest_segmenturlnode().

static int parse_manifest_segmenturlnode ( AVFormatContext *  s,
struct representation *  rep,
xmlNodePtr  fragmenturl_node,
xmlNodePtr *  baseurl_nodes,
char *  rep_id_val,
char *  rep_bandwidth_val 
)
static

Definition at line 592 of file dashdec.c.

Referenced by parse_manifest_representation().

static int parse_manifest_segmenttimeline ( AVFormatContext *  s,
struct representation *  rep,
xmlNodePtr  fragment_timeline_node 
)
static

Definition at line 659 of file dashdec.c.

Referenced by parse_manifest_representation().

static int resolve_content_path ( AVFormatContext *  s,
const char *  url,
int *  max_url_size,
xmlNodePtr *  baseurl_nodes,
int  n_baseurl_nodes 
)
static

Definition at line 695 of file dashdec.c.

Referenced by parse_manifest_representation().

static int parse_manifest_representation ( AVFormatContext *  s,
const char *  url,
xmlNodePtr  node,
xmlNodePtr  adaptionset_node,
xmlNodePtr  mpd_baseurl_node,
xmlNodePtr  period_baseurl_node,
xmlNodePtr  period_segmenttemplate_node,
xmlNodePtr  period_segmentlist_node,
xmlNodePtr  fragment_template_node,
xmlNodePtr  content_component_node,
xmlNodePtr  adaptionset_baseurl_node,
xmlNodePtr  adaptionset_segmentlist_node,
xmlNodePtr  adaptionset_supplementalproperty_node 
)
static

Definition at line 798 of file dashdec.c.

Referenced by parse_manifest_adaptationset().

static int parse_manifest_adaptationset ( AVFormatContext *  s,
const char *  url,
xmlNodePtr  adaptionset_node,
xmlNodePtr  mpd_baseurl_node,
xmlNodePtr  period_baseurl_node,
xmlNodePtr  period_segmenttemplate_node,
xmlNodePtr  period_segmentlist_node 
)
static

Definition at line 1058 of file dashdec.c.

Referenced by parse_manifest().

static int parse_manifest ( AVFormatContext *  s,
const char *  url,
AVIOContext *  in 
)
static

Definition at line 1106 of file dashdec.c.

Referenced by dash_read_header(), and refresh_manifest().

static int64_t calc_cur_seg_no ( AVFormatContext *  s,
struct representation *  pls 
)
static

Definition at line 1278 of file dashdec.c.

Referenced by get_current_fragment(), and open_demux_for_component().

static int64_t calc_min_seg_no ( AVFormatContext *  s,
struct representation *  pls 
)
static

Definition at line 1309 of file dashdec.c.

Referenced by get_current_fragment().

static int64_t calc_max_seg_no ( struct representation *  pls,
DASHContext *  c 
)
static

Definition at line 1322 of file dashdec.c.

Referenced by get_current_fragment(), move_segments(), move_timelines(), and open_demux_for_component().

static void move_timelines ( struct representation *  rep_src,
struct representation *  rep_dest,
DASHContext *  c 
)
static

Definition at line 1343 of file dashdec.c.

Referenced by refresh_manifest().

static void move_segments ( struct representation *  rep_src,
struct representation *  rep_dest,
DASHContext *  c 
)
static

Definition at line 1357 of file dashdec.c.

Referenced by refresh_manifest().

static int refresh_manifest ( AVFormatContext *  s)
static

Definition at line 1375 of file dashdec.c.

Referenced by get_current_fragment().

static struct fragment* get_current_fragment ( struct representation *  pls)
static

Definition at line 1460 of file dashdec.c.

Referenced by read_data().

static int read_from_url ( struct representation *  pls,
struct fragment *  seg,
uint8_t *  buf,
int  buf_size,
enum ReadFromURLMode  mode 
)
static

Definition at line 1540 of file dashdec.c.

Referenced by read_data(), and update_init_section().

static int open_input ( DASHContext *  c,
struct representation *  pls,
struct fragment *  seg 
)
static

Definition at line 1564 of file dashdec.c.

Referenced by read_data(), and update_init_section().

static int update_init_section ( struct representation *  pls)
static

Definition at line 1598 of file dashdec.c.

Referenced by read_data().

static int64_t seek_data ( void *  opaque,
int64_t  offset,
int  whence 
)
static

Definition at line 1645 of file dashdec.c.

Referenced by reopen_demux_for_component().

static int read_data ( void *  opaque,
uint8_t *  buf,
int  buf_size 
)
static

Definition at line 1655 of file dashdec.c.

Referenced by pulse_read_packet(), reopen_demux_for_component(), and tls_client_handshake_loop().

static int save_avio_options ( AVFormatContext *  s)
static

Definition at line 1718 of file dashdec.c.

Referenced by dash_read_header().

static int nested_io_open ( AVFormatContext *  s,
AVIOContext **  pb,
const char *  url,
int  flags,
AVDictionary **  opts 
)
static

Definition at line 1743 of file dashdec.c.

Referenced by reopen_demux_for_component().

static void close_demux_for_component ( struct representation *  pls)
static

Definition at line 1753 of file dashdec.c.

Referenced by recheck_discard_flags(), and reopen_demux_for_component().

static int reopen_demux_for_component ( AVFormatContext *  s,
struct representation *  pls 
)
static

Definition at line 1763 of file dashdec.c.

Referenced by dash_read_packet(), dash_seek(), open_demux_for_component(), and recheck_discard_flags().

static int open_demux_for_component ( AVFormatContext *  s,
struct representation *  pls 
)
static

Definition at line 1832 of file dashdec.c.

Referenced by dash_read_header().

static int dash_read_header ( AVFormatContext *  s)
static

Definition at line 1865 of file dashdec.c.

static void recheck_discard_flags ( AVFormatContext *  s,
struct representation **  p,
int  n 
)
static

Definition at line 1952 of file dashdec.c.

Referenced by dash_read_packet().

static int dash_read_packet ( AVFormatContext *  s,
AVPacket *  pkt 
)
static

Definition at line 1978 of file dashdec.c.

static int dash_close ( AVFormatContext *  s)
static

Definition at line 2030 of file dashdec.c.

static int dash_seek ( AVFormatContext *  s,
struct representation *  pls,
int64_t  seek_pos_msec,
int  flags,
int  dry_run 
)
static

Definition at line 2043 of file dashdec.c.

Referenced by dash_read_seek().

static int dash_read_seek ( AVFormatContext *  s,
int  stream_index,
int64_t  timestamp,
int  flags 
)
static

Definition at line 2108 of file dashdec.c.

static int dash_probe ( AVProbeData *  p)
static

Definition at line 2132 of file dashdec.c.

Variable Documentation

const AVOption dash_options[]
static
Initial value:
= {
{"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}
}
FLAGS
#define FLAGS
Definition: dashdec.c:2151
NULL
#define NULL
Definition: coverity.c:32
AV_OPT_TYPE_STRING
Definition: opt.h:227
OFFSET
#define OFFSET(x)
Definition: dashdec.c:2150

Definition at line 2152 of file dashdec.c.

const AVClass dash_class
static
Initial value:
= {
.class_name = "dash",
.item_name = av_default_item_name,
.option = dash_options,
.version = LIBAVUTIL_VERSION_INT,
}
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
av_default_item_name
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:191
dash_options
static const AVOption dash_options[]
Definition: dashdec.c:2152

Definition at line 2160 of file dashdec.c.

AVInputFormat ff_dash_demuxer
Initial value:
= {
.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,
}
read_seek
static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp, int flags)
Definition: libcdio.c:153
dash_close
static int dash_close(AVFormatContext *s)
Definition: dashdec.c:2030
flags
static int flags
Definition: log.c:55
read_close
static av_cold int read_close(AVFormatContext *ctx)
Definition: libcdio.c:145
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
dash_read_seek
static int dash_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
Definition: dashdec.c:2108
read_probe
static int read_probe(AVProbeData *pd)
Definition: jvdec.c:55
read_header
static int read_header(FFV1Context *f)
Definition: ffv1dec.c:530
dash_probe
static int dash_probe(AVProbeData *p)
Definition: dashdec.c:2132
read_packet
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
Definition: avio_reading.c:42
dash_read_header
static int dash_read_header(AVFormatContext *s)
Definition: dashdec.c:1865
dash_read_packet
static int dash_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: dashdec.c:1978
dash_class
static const AVClass dash_class
Definition: dashdec.c:2160
AVFMT_NO_BYTE_SEEK
#define AVFMT_NO_BYTE_SEEK
Format does not allow seeking by bytes.
Definition: avformat.h:477

Definition at line 2167 of file dashdec.c.

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