gstreamer/ext/dash/gstmpdparser.h
George Kiagiadakis ea90ceac01 dashdemux: support downloading segments in reverse order
When a seek with a negative rate is requested, find the target
segment where gstsegment.stop belongs in and then download from
this segment backwards until the first segment.

This allows proper reverse playback.
2014-08-07 16:52:37 +03:00

549 lines
17 KiB
C

/*
* DASH MPD parsing library
*
* gstmpdparser.h
*
* Copyright (C) 2012 STMicroelectronics
*
* Authors:
* Gianluca Gennari <gennarone@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library (COPYING); if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __GST_MPDPARSER_H__
#define __GST_MPDPARSER_H__
#include <gst/gst.h>
G_BEGIN_DECLS
typedef struct _GstMpdClient GstMpdClient;
typedef struct _GstActiveStream GstActiveStream;
typedef struct _GstStreamPeriod GstStreamPeriod;
typedef struct _GstMediaFragmentInfo GstMediaFragmentInfo;
typedef struct _GstMediaSegment GstMediaSegment;
typedef struct _GstMPDNode GstMPDNode;
typedef struct _GstPeriodNode GstPeriodNode;
typedef struct _GstRepresentationBaseType GstRepresentationBaseType;
typedef struct _GstDescriptorType GstDescriptorType;
typedef struct _GstContentComponentNode GstContentComponentNode;
typedef struct _GstAdaptationSetNode GstAdaptationSetNode;
typedef struct _GstRepresentationNode GstRepresentationNode;
typedef struct _GstSubRepresentationNode GstSubRepresentationNode;
typedef struct _GstSegmentListNode GstSegmentListNode;
typedef struct _GstSegmentTemplateNode GstSegmentTemplateNode;
typedef struct _GstSegmentURLNode GstSegmentURLNode;
typedef struct _GstBaseURL GstBaseURL;
typedef struct _GstRange GstRange;
typedef struct _GstRatio GstRatio;
typedef struct _GstFrameRate GstFrameRate;
typedef struct _GstConditionalUintType GstConditionalUintType;
typedef struct _GstSubsetNode GstSubsetNode;
typedef struct _GstProgramInformationNode GstProgramInformationNode;
typedef struct _GstMetricsRangeNode GstMetricsRangeNode;
typedef struct _GstMetricsNode GstMetricsNode;
typedef struct _GstSNode GstSNode;
typedef struct _GstSegmentTimelineNode GstSegmentTimelineNode;
typedef struct _GstSegmentBaseType GstSegmentBaseType;
typedef struct _GstURLType GstURLType;
typedef struct _GstMultSegmentBaseType GstMultSegmentBaseType;
#define GST_MPD_CLIENT_LOCK(c) g_mutex_lock (&c->lock);
#define GST_MPD_CLIENT_UNLOCK(c) g_mutex_unlock (&c->lock);
typedef enum
{
GST_STREAM_UNKNOWN,
GST_STREAM_VIDEO, /* video stream (the main one) */
GST_STREAM_AUDIO, /* audio stream (optional) */
GST_STREAM_APPLICATION /* application stream (optional): for timed text/subtitles */
} GstStreamMimeType;
typedef enum
{
GST_MPD_FILE_TYPE_STATIC,
GST_MPD_FILE_TYPE_DYNAMIC
} GstMPDFileType;
typedef enum
{
GST_SAP_TYPE_0 = 0,
GST_SAP_TYPE_1,
GST_SAP_TYPE_2,
GST_SAP_TYPE_3,
GST_SAP_TYPE_4,
GST_SAP_TYPE_5,
GST_SAP_TYPE_6
} GstSAPType;
struct _GstBaseURL
{
gchar *baseURL;
gchar *serviceLocation;
gchar *byteRange;
};
struct _GstRange
{
guint64 first_byte_pos;
guint64 last_byte_pos;
};
struct _GstRatio
{
guint num;
guint den;
};
struct _GstFrameRate
{
guint num;
guint den;
};
struct _GstConditionalUintType
{
gboolean flag;
guint value;
};
struct _GstSNode
{
guint64 t;
guint64 d;
guint r;
};
struct _GstSegmentTimelineNode
{
/* list of S nodes */
GQueue S;
};
struct _GstURLType
{
gchar *sourceURL;
GstRange *range;
};
struct _GstSegmentBaseType
{
guint timescale;
guint presentationTimeOffset;
GstRange *indexRange;
gboolean indexRangeExact;
/* Initialization node */
GstURLType *Initialization;
/* RepresentationIndex node */
GstURLType *RepresentationIndex;
};
struct _GstMultSegmentBaseType
{
guint duration; /* in seconds */
guint startNumber;
/* SegmentBaseType extension */
GstSegmentBaseType *SegBaseType;
/* SegmentTimeline node */
GstSegmentTimelineNode *SegmentTimeline;
/* BitstreamSwitching node */
GstURLType *BitstreamSwitching;
};
struct _GstSegmentListNode
{
/* extension */
GstMultSegmentBaseType *MultSegBaseType;
/* list of SegmentURL nodes */
GList *SegmentURL;
};
struct _GstSegmentTemplateNode
{
/* extension */
GstMultSegmentBaseType *MultSegBaseType;
gchar *media;
gchar *index;
gchar *initialization;
gchar *bitstreamSwitching;
};
struct _GstSegmentURLNode
{
gchar *media;
GstRange *mediaRange;
gchar *index;
GstRange *indexRange;
};
struct _GstRepresentationBaseType
{
gchar *profiles;
guint width;
guint height;
GstRatio *sar;
GstFrameRate *frameRate;
gchar *audioSamplingRate;
gchar *mimeType;
gchar *segmentProfiles;
gchar *codecs;
gdouble maximumSAPPeriod;
GstSAPType startWithSAP;
gdouble maxPlayoutRate;
gboolean codingDependency;
gchar *scanType;
/* list of FramePacking DescriptorType nodes */
GList *FramePacking;
/* list of AudioChannelConfiguration DescriptorType nodes */
GList *AudioChannelConfiguration;
/* list of ContentProtection DescriptorType nodes */
GList *ContentProtection;
};
struct _GstSubRepresentationNode
{
/* RepresentationBase extension */
GstRepresentationBaseType *RepresentationBase;
guint level;
guint *dependencyLevel; /* UIntVectorType */
guint size; /* size of "dependencyLevel" array */
guint bandwidth;
gchar **contentComponent; /* StringVectorType */
};
struct _GstRepresentationNode
{
gchar *id;
guint bandwidth;
guint qualityRanking;
gchar **dependencyId; /* StringVectorType */
gchar **mediaStreamStructureId; /* StringVectorType */
/* RepresentationBase extension */
GstRepresentationBaseType *RepresentationBase;
/* list of BaseURL nodes */
GList *BaseURLs;
/* list of SubRepresentation nodes */
GList *SubRepresentations;
/* SegmentBase node */
GstSegmentBaseType *SegmentBase;
/* SegmentTemplate node */
GstSegmentTemplateNode *SegmentTemplate;
/* SegmentList node */
GstSegmentListNode *SegmentList;
};
struct _GstDescriptorType
{
gchar *schemeIdUri;
gchar *value;
};
struct _GstContentComponentNode
{
guint id;
gchar *lang; /* LangVectorType RFC 5646 */
gchar *contentType;
GstRatio *par;
/* list of Accessibility DescriptorType nodes */
GList *Accessibility;
/* list of Role DescriptorType nodes */
GList *Role;
/* list of Rating DescriptorType nodes */
GList *Rating;
/* list of Viewpoint DescriptorType nodes */
GList *Viewpoint;
};
struct _GstAdaptationSetNode
{
guint id;
guint group;
gchar *lang; /* LangVectorType RFC 5646 */
gchar *contentType;
GstRatio *par;
guint minBandwidth;
guint maxBandwidth;
guint minWidth;
guint maxWidth;
guint minHeight;
guint maxHeight;
GstFrameRate *minFrameRate;
GstFrameRate *maxFrameRate;
GstConditionalUintType *segmentAlignment;
GstConditionalUintType *subsegmentAlignment;
GstSAPType subsegmentStartsWithSAP;
gboolean bitstreamSwitching;
/* list of Accessibility DescriptorType nodes */
GList *Accessibility;
/* list of Role DescriptorType nodes */
GList *Role;
/* list of Rating DescriptorType nodes */
GList *Rating;
/* list of Viewpoint DescriptorType nodes */
GList *Viewpoint;
/* RepresentationBase extension */
GstRepresentationBaseType *RepresentationBase;
/* SegmentBase node */
GstSegmentBaseType *SegmentBase;
/* SegmentList node */
GstSegmentListNode *SegmentList;
/* SegmentTemplate node */
GstSegmentTemplateNode *SegmentTemplate;
/* list of BaseURL nodes */
GList *BaseURLs;
/* list of Representation nodes */
GList *Representations;
/* list of ContentComponent nodes */
GList *ContentComponents;
};
struct _GstSubsetNode
{
guint *contains; /* UIntVectorType */
guint size; /* size of the "contains" array */
};
struct _GstPeriodNode
{
gchar *id;
gint64 start; /* [ms] */
gint64 duration; /* [ms] */
gboolean bitstreamSwitching;
/* SegmentBase node */
GstSegmentBaseType *SegmentBase;
/* SegmentList node */
GstSegmentListNode *SegmentList;
/* SegmentTemplate node */
GstSegmentTemplateNode *SegmentTemplate;
/* list of Adaptation Set nodes */
GList *AdaptationSets;
/* list of Representation nodes */
GList *Subsets;
/* list of BaseURL nodes */
GList *BaseURLs;
};
struct _GstProgramInformationNode
{
gchar *lang; /* LangVectorType RFC 5646 */
gchar *moreInformationURL;
/* children nodes */
gchar *Title;
gchar *Source;
gchar *Copyright;
};
struct _GstMetricsRangeNode
{
gint64 starttime; /* [ms] */
gint64 duration; /* [ms] */
};
struct _GstMetricsNode
{
gchar *metrics;
/* list of Metrics Range nodes */
GList *MetricsRanges;
/* list of Reporting nodes */
GList *Reportings;
};
struct _GstMPDNode
{
gchar *default_namespace;
gchar *namespace_xsi;
gchar *namespace_ext;
gchar *schemaLocation;
gchar *id;
gchar *profiles;
GstMPDFileType type;
GstDateTime *availabilityStartTime;
GstDateTime *availabilityEndTime;
gint64 mediaPresentationDuration; /* [ms] */
gint64 minimumUpdatePeriod; /* [ms] */
gint64 minBufferTime; /* [ms] */
gint64 timeShiftBufferDepth; /* [ms] */
gint64 suggestedPresentationDelay; /* [ms] */
gint64 maxSegmentDuration; /* [ms] */
gint64 maxSubsegmentDuration; /* [ms] */
/* list of BaseURL nodes */
GList *BaseURLs;
/* list of Location nodes */
GList *Locations;
/* List of ProgramInformation nodes */
GList *ProgramInfo;
/* list of Periods nodes */
GList *Periods;
/* list of Metrics nodes */
GList *Metrics;
};
/**
* GstStreamPeriod:
*
* Stream period data structure
*/
struct _GstStreamPeriod
{
GstPeriodNode *period; /* Stream period */
guint number; /* Period number */
GstClockTime start; /* Period start time */
GstClockTime duration; /* Period duration */
};
/**
* GstMediaSegment:
*
* Media segment data structure
*/
struct _GstMediaSegment
{
GstSegmentURLNode *SegmentURL; /* this is NULL when using a SegmentTemplate */
guint number; /* segment number */
guint64 start; /* segment start time in timescale units */
GstClockTime start_time; /* segment start time */
GstClockTime duration; /* segment duration */
};
struct _GstMediaFragmentInfo
{
gchar *uri;
gint64 range_start;
gint64 range_end;
gchar *index_uri;
gint64 index_range_start;
gint64 index_range_end;
gboolean discontinuity;
GstClockTime timestamp;
GstClockTime duration;
};
/**
* GstActiveStream:
*
* Active stream data structure
*/
struct _GstActiveStream
{
GstStreamMimeType mimeType; /* video/audio/application */
guint baseURL_idx; /* index of the baseURL used for last request */
gchar *baseURL; /* active baseURL used for last request */
gchar *queryURL; /* active baseURL used for last request */
guint max_bandwidth; /* max bandwidth allowed for this mimeType */
GstAdaptationSetNode *cur_adapt_set; /* active adaptation set */
gint representation_idx; /* index of current representation */
GstRepresentationNode *cur_representation; /* active representation */
GstSegmentBaseType *cur_segment_base; /* active segment base */
GstSegmentListNode *cur_segment_list; /* active segment list */
GstSegmentTemplateNode *cur_seg_template; /* active segment template */
guint segment_idx; /* index of next sequence chunk */
GPtrArray *segments; /* array of GstMediaSegment */
};
struct _GstMpdClient
{
GstMPDNode *mpd_node; /* active MPD manifest file */
GList *periods; /* list of GstStreamPeriod */
guint period_idx; /* index of current Period */
GList *active_streams; /* list of GstActiveStream */
guint update_failed_count;
gchar *mpd_uri; /* manifest file URI */
gchar *mpd_base_uri; /* base URI for resolving relative URIs.
* this will be different for redirects */
GMutex lock;
};
/* Basic initialization/deinitialization functions */
GstMpdClient *gst_mpd_client_new (void);
void gst_active_streams_free (GstMpdClient * client);
void gst_mpd_client_free (GstMpdClient * client);
void gst_media_fragment_info_clear (GstMediaFragmentInfo * fragment);
/* MPD file parsing */
gboolean gst_mpd_parse (GstMpdClient *client, const gchar *data, gint size);
/* Streaming management */
gboolean gst_mpd_client_setup_media_presentation (GstMpdClient *client);
gboolean gst_mpd_client_setup_streaming (GstMpdClient * client, GstAdaptationSetNode * adapt_set);
gboolean gst_mpd_client_setup_representation (GstMpdClient *client, GstActiveStream *stream, GstRepresentationNode *representation);
GList * gst_mpd_client_get_adaptation_sets (GstMpdClient * client);
GstClockTime gst_mpd_client_get_next_fragment_duration (GstMpdClient * client, GstActiveStream * stream);
GstClockTime gst_mpd_client_get_media_presentation_duration (GstMpdClient *client);
gboolean gst_mpd_client_get_last_fragment_timestamp (GstMpdClient * client, guint stream_idx, GstClockTime * ts);
gboolean gst_mpd_client_get_next_fragment_timestamp (GstMpdClient * client, guint stream_idx, GstClockTime * ts);
gboolean gst_mpd_client_get_next_fragment (GstMpdClient *client, guint indexStream, GstMediaFragmentInfo * fragment, gboolean forward);
gboolean gst_mpd_client_get_next_header (GstMpdClient *client, gchar **uri, guint stream_idx, gint64 * range_start, gint64 * range_end);
gboolean gst_mpd_client_get_next_header_index (GstMpdClient *client, gchar **uri, guint stream_idx, gint64 * range_start, gint64 * range_end);
gboolean gst_mpd_client_is_live (GstMpdClient * client);
gboolean gst_mpd_client_stream_seek (GstMpdClient * client, GstActiveStream * stream, GstClockTime ts);
gboolean gst_mpd_client_seek_to_time (GstMpdClient * client, GDateTime * time);
GstDateTime *gst_mpd_client_add_time_difference (GstDateTime * t1, gint64 usecs);
gint gst_mpd_client_get_segment_index_at_time (GstMpdClient *client, GstActiveStream * stream, const GstDateTime *time);
gint gst_mpd_client_check_time_position (GstMpdClient * client, GstActiveStream * stream, GstClockTime ts, gint64 * diff);
/* Period selection */
gboolean gst_mpd_client_set_period_index (GstMpdClient *client, guint period_idx);
gboolean gst_mpd_client_set_period_id (GstMpdClient *client, const gchar * period_id);
guint gst_mpd_client_get_period_index (GstMpdClient *client);
const gchar *gst_mpd_client_get_period_id (GstMpdClient *client);
gboolean gst_mpd_client_has_next_period (GstMpdClient *client);
GstDateTime *gst_mpd_client_get_next_segment_availability_end_time (GstMpdClient * client, GstActiveStream * stream);
/* Representation selection */
gint gst_mpdparser_get_rep_idx_with_max_bandwidth (GList *Representations, gint max_bandwidth);
gint gst_mpdparser_get_rep_idx_with_min_bandwidth (GList * Representations);
/* URL management */
const gchar *gst_mpdparser_get_baseURL (GstMpdClient *client, guint indexStream);
gboolean gst_mpdparser_get_chunk_by_index (GstMpdClient *client, guint indexStream, guint indexChunk, GstMediaSegment * segment);
/* Active stream */
guint gst_mpdparser_get_nb_active_stream (GstMpdClient *client);
GstActiveStream *gst_mpdparser_get_active_stream_by_index (GstMpdClient *client, guint stream_idx);
/* AdaptationSet */
guint gst_mpdparser_get_nb_adaptationSet (GstMpdClient *client);
/* Segment */
void gst_mpd_client_set_segment_index_for_all_streams (GstMpdClient * client, guint segment_idx);
guint gst_mpd_client_get_segment_index (GstActiveStream * stream);
void gst_mpd_client_set_segment_index (GstActiveStream * stream, guint segment_idx);
/* Get audio/video stream parameters (mimeType, width, height, rate, number of channels) */
const gchar *gst_mpd_client_get_stream_mimeType (GstActiveStream * stream);
gboolean gst_mpd_client_get_bitstream_switching_flag (GstActiveStream * stream);
guint gst_mpd_client_get_video_stream_width (GstActiveStream * stream);
guint gst_mpd_client_get_video_stream_height (GstActiveStream * stream);
guint gst_mpd_client_get_audio_stream_rate (GstActiveStream * stream);
guint gst_mpd_client_get_audio_stream_num_channels (GstActiveStream * stream);
/* Support multi language */
guint gst_mpdparser_get_list_and_nb_of_audio_language (GstMpdClient *client, GList **lang);
gint64 gst_mpd_client_calculate_time_difference (const GstDateTime * t1, const GstDateTime * t2);
G_END_DECLS
#endif /* __GST_MPDPARSER_H__ */