initial commit, 4.5 stable

modules/theora/editor/movie_writer_ogv.h

@@ -0,0 +1,139 @@
+/**************************************************************************/
+/*  movie_writer_ogv.h                                                    */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#pragma once
+
+#include "servers/audio_server.h"
+#include "servers/movie_writer/movie_writer.h"
+
+#include <theora/theoraenc.h>
+#include <vorbis/codec.h>
+#include <vorbis/vorbisenc.h>
+
+class MovieWriterOGV : public MovieWriter {
+	GDCLASS(MovieWriterOGV, MovieWriter)
+
+	uint32_t mix_rate = 48000;
+	AudioServer::SpeakerMode speaker_mode = AudioServer::SPEAKER_MODE_STEREO;
+	String base_path;
+	uint32_t frame_count = 0;
+	uint32_t fps = 0;
+	uint32_t audio_ch = 0;
+	uint32_t audio_frames = 0;
+
+	Ref<FileAccess> f;
+
+	// Vorbis quality -0.1 to 1 (-0.1 yields smallest files but lowest fidelity; 1 yields highest fidelity but large files. '0.2' is a reasonable default).
+	float audio_quality = 0.5;
+
+	// Bitrate target for Theora video.
+	int video_bitrate = 0;
+
+	// Theora quality selector from 0 to 1.0 (0 yields smallest files but lowest video quality. 1.0 yields highest fidelity but large files).
+	float video_quality = 0.75;
+
+	// Video stream keyframe frequency (one every N frames).
+	ogg_uint32_t keyframe_frequency = 64;
+
+	// Sets the encoder speed level. Higher speed levels favor quicker encoding over better quality per bit. Depending on the encoding
+	// mode, and the internal algorithms used, quality may actually improve with higher speeds, but in this case bitrate will also
+	// likely increase. The maximum value, and the meaning of each value, are implementation-specific and may change depending on the
+	// current encoding mode.
+	int speed = 4;
+
+	// Take physical pages, weld into a logical stream of packets.
+	ogg_stream_state to;
+
+	// Take physical pages, weld into a logical stream of packets.
+	ogg_stream_state vo;
+
+	// Theora encoding context.
+	th_enc_ctx *td;
+
+	// Theora bitstream information.
+	th_info ti;
+
+	// Theora comment information.
+	th_comment tc;
+
+	// Vorbis bitstream information.
+	vorbis_info vi;
+
+	// Vorbis comment information.
+	vorbis_comment vc;
+
+	// Central working state for the packet->PCM decoder.
+	vorbis_dsp_state vd;
+
+	// Local working space for packet->PCM decode.
+	vorbis_block vb;
+
+	// Video buffer.
+	uint8_t *y, *u, *v;
+	th_ycbcr_buffer ycbcr;
+
+	bool audio_flag = false;
+	bool video_flag = false;
+	ogg_page audio_page;
+	ogg_page video_page;
+	ogg_page backup_page;
+	unsigned int backup_page_size = 0;
+	unsigned char *backup_page_data = nullptr;
+
+	void write_to_file(bool p_finish = false);
+	void push_audio(const int32_t *p_audio_data);
+	void push_video(const Ref<Image> &p_image);
+	void pull_audio(bool p_last = false);
+	void pull_video(bool p_last = false);
+	void save_page(ogg_page page);
+	void restore_page(ogg_page *page);
+
+	inline int ilog(unsigned _v) {
+		int ret;
+		for (ret = 0; _v; ret++) {
+			_v >>= 1;
+		}
+		return ret;
+	}
+
+protected:
+	virtual uint32_t get_audio_mix_rate() const override;
+	virtual AudioServer::SpeakerMode get_audio_speaker_mode() const override;
+	virtual void get_supported_extensions(List<String> *r_extensions) const override;
+
+	virtual Error write_begin(const Size2i &p_movie_size, uint32_t p_fps, const String &p_base_path) override;
+	virtual Error write_frame(const Ref<Image> &p_image, const int32_t *p_audio_data) override;
+	virtual void write_end() override;
+
+	virtual bool handles_file(const String &p_path) const override;
+
+public:
+	MovieWriterOGV();
+};