129 lines
5.1 KiB
C++
129 lines
5.1 KiB
C++
/*************************************************************************/
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/* ogg_packet_sequence.h */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#ifndef OGG_PACKET_SEQUENCE_H
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#define OGG_PACKET_SEQUENCE_H
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#include "core/io/resource.h"
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#include "core/object/gdvirtual.gen.inc"
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#include "core/variant/native_ptr.h"
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#include "core/variant/typed_array.h"
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#include "core/variant/variant.h"
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#include "thirdparty/libogg/ogg/ogg.h"
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class OGGPacketSequencePlayback;
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class OGGPacketSequence : public Resource {
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GDCLASS(OGGPacketSequence, Resource);
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friend class OGGPacketSequencePlayback;
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// List of pages, each of which is a list of packets on that page. The innermost PackedByteArrays contain complete ogg packets.
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Vector<Vector<PackedByteArray>> page_data;
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// List of the granule position for each page.
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Vector<uint64_t> page_granule_positions;
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// The page after the current last page. Similar semantics to an end() iterator.
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int64_t end_page = 0;
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uint64_t data_version = 0;
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float sampling_rate = 0;
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float length = 0;
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protected:
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static void _bind_methods();
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public:
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// Pushes information about all the pages that ended on this page.
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// This should be called for each page, even for pages that no packets ended on.
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void push_page(int64_t p_granule_pos, const Vector<PackedByteArray> &p_data);
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void set_packet_data(const Array &p_data);
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Array get_packet_data() const;
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void set_packet_granule_positions(const Array &p_granule_positions);
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Array get_packet_granule_positions() const;
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// Sets a sampling rate associated with this object. OGGPacketSequence doesn't understand codecs,
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// so this value is naively stored as a convenience.
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void set_sampling_rate(float p_sampling_rate);
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// Returns a sampling rate previously set by set_sampling_rate().
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float get_sampling_rate() const;
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// Returns a length previously set by set_length().
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float get_length() const;
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// Returns the granule position of the last page in this sequence.
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int64_t get_final_granule_pos() const;
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Ref<OGGPacketSequencePlayback> instance_playback();
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OGGPacketSequence() {}
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virtual ~OGGPacketSequence() {}
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};
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class OGGPacketSequencePlayback : public RefCounted {
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GDCLASS(OGGPacketSequencePlayback, RefCounted);
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friend class OGGPacketSequence;
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Ref<OGGPacketSequence> ogg_packet_sequence;
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mutable int64_t page_cursor = 0;
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mutable int32_t packet_cursor = 0;
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mutable ogg_packet *packet;
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uint64_t data_version;
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mutable int64_t packetno = 0;
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// Recursive bisection search for the correct page.
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uint32_t seek_page_internal(int64_t granule, uint32_t after_page_inclusive, uint32_t before_page_inclusive);
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public:
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// Calling functions must not modify this packet.
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// Returns true on success, false on error or if there is no next packet.
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bool next_ogg_packet(ogg_packet **p_packet) const;
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// Seeks to the page such that the previous page has a granule position less than or equal to this value,
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// and the current page has a granule position greater than this value.
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// Returns true on success, false on failure.
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bool seek_page(int64_t p_granule_pos);
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OGGPacketSequencePlayback();
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virtual ~OGGPacketSequencePlayback();
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};
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#endif // OGG_PACKET_SEQUENCE_H
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