cc033c7ca0
Measure the download bitrate to be able to select the best playlist. As the buffers are directly pushed downstream and it might block. The time is only measured from the download until the pad push and it is started again after the push returns.
147 lines
4.4 KiB
C
147 lines
4.4 KiB
C
/* GStreamer
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* Copyright (C) 2010 Marc-Andre Lureau <marcandre.lureau@gmail.com>
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* Copyright (C) 2010 Andoni Morales Alastruey <ylatuya@gmail.com>
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*
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* gsthlsdemux.h:
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GST_HLS_DEMUX_H__
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#define __GST_HLS_DEMUX_H__
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#include <gst/gst.h>
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#include <gst/base/gstadapter.h>
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#include "m3u8.h"
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#include "gstfragmented.h"
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#include <gst/uridownloader/gsturidownloader.h>
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#ifdef HAVE_NETTLE
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#include <nettle/aes.h>
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#include <nettle/cbc.h>
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#else
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#include <gcrypt.h>
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#endif
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G_BEGIN_DECLS
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#define GST_TYPE_HLS_DEMUX \
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(gst_hls_demux_get_type())
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#define GST_HLS_DEMUX(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_HLS_DEMUX,GstHLSDemux))
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#define GST_HLS_DEMUX_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_HLS_DEMUX,GstHLSDemuxClass))
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#define GST_IS_HLS_DEMUX(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_HLS_DEMUX))
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#define GST_IS_HLS_DEMUX_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_HLS_DEMUX))
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#define GST_HLS_DEMUX_GET_CLASS(obj) \
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(G_TYPE_INSTANCE_GET_CLASS ((obj),GST_TYPE_HLS_DEMUX,GstHLSDemuxClass))
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typedef struct _GstHLSDemux GstHLSDemux;
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typedef struct _GstHLSDemuxClass GstHLSDemuxClass;
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/**
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* GstHLSDemux:
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*
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* Opaque #GstHLSDemux data structure.
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*/
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struct _GstHLSDemux
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{
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GstBin parent;
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GstPad *sinkpad;
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GstPad *srcpad;
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gint srcpad_counter;
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gboolean have_group_id;
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guint group_id;
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GstBuffer *playlist;
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GstCaps *input_caps;
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GstUriDownloader *downloader;
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gchar *uri; /* Original playlist URI */
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GstM3U8Client *client; /* M3U8 client */
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gboolean do_typefind; /* Whether we need to typefind the next buffer */
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/* Properties */
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guint fragments_cache; /* number of fragments needed to be cached to start playing */
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gfloat bitrate_limit; /* limit of the available bitrate to use */
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guint connection_speed; /* Network connection speed in kbps (0 = unknown) */
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/* Streaming task */
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GstTask *stream_task;
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GRecMutex stream_lock;
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gboolean stop_stream_task;
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GMutex download_lock; /* Used for protecting queue and the two conds */
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GCond download_cond; /* Signalled when something is added to the queue */
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gboolean end_of_playlist;
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gint download_failed_count;
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gint64 next_download;
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/* Updates task */
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GstTask *updates_task;
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GRecMutex updates_lock;
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gint64 next_update; /* Time of the next update */
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gboolean stop_updates_task;
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GMutex updates_timed_lock;
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GCond updates_timed_cond; /* Signalled when the playlist should be updated */
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/* Position in the stream */
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GstSegment segment;
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gboolean need_segment;
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gboolean discont;
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/* Cache for the last key */
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gchar *key_url;
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GstFragment *key_fragment;
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/* Current download rate (bps) */
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gint current_download_rate;
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/* fragment download tooling */
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GstElement *src;
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GMutex fragment_download_lock;
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GCond fragment_download_cond;
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GstClockTime current_timestamp;
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gboolean starting_fragment;
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gint64 download_start_time;
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gint64 download_total_time;
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gint64 download_total_bytes;
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/* decryption tooling */
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#ifdef HAVE_NETTLE
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struct CBC_CTX (struct aes_ctx, AES_BLOCK_SIZE) aes_ctx;
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#else
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gcry_cipher_hd_t aes_ctx;
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#endif
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const gchar *current_key;
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const guint8 *current_iv;
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GstAdapter *adapter; /* used to accumulate 16 bytes multiple chunks */
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GstBuffer *pending_buffer; /* decryption scenario:
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* the last buffer can only be pushed when
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* resized, so need to store and wait for
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* EOS to know it is the last */
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};
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struct _GstHLSDemuxClass
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{
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GstBinClass parent_class;
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};
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GType gst_hls_demux_get_type (void);
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G_END_DECLS
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#endif /* __GST_HLS_DEMUX_H__ */
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