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229a15b393
Add more power to the chunk_received function (renamed to data_received) and also to the fragment_finish function. The data_received function must parse/decrypt the data if necessary and also push it using the new push_buffer function that is exposed now. The default implementation gets data from the stream adapter (all available) and pushes it. The fragment_finish function must also advance the fragment. The default implementation only advances the fragment. This allows the subsegment handling in dashdemux to continuously download the same file from the server instead of stopping at every subsegment boundary and starting a new request
114 lines
3.4 KiB
C
114 lines
3.4 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 "m3u8.h"
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#include "gstfragmented.h"
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#include <gst/uridownloader/gsturidownloader.h>
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#include <gst/adaptivedemux/gstadaptivedemux.h>
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#if defined(HAVE_OPENSSL)
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#include <openssl/evp.h>
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#elif defined(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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#define GST_HLS_DEMUX_CAST(obj) \
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((GstHLSDemux *)obj)
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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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GstAdaptiveDemux parent;
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gint srcpad_counter;
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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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gboolean new_playlist; /* Whether a new playlist is about to start and pads should be switched */
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/* Properties */
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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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gint64 next_download;
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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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/* decryption tooling */
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#if defined(HAVE_OPENSSL)
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EVP_CIPHER_CTX aes_ctx;
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#elif defined(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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gchar *current_key;
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guint8 *current_iv;
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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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gboolean reset_pts;
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};
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struct _GstHLSDemuxClass
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{
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GstAdaptiveDemuxClass 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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