initial commit, 4.5 stable

modules/jpg/SCsub

@@ -0,0 +1,112 @@
+#!/usr/bin/env python
+from misc.utility.scons_hints import *
+
+Import("env")
+Import("env_modules")
+
+env_jpg = env_modules.Clone()
+
+thirdparty_obj = []
+
+thirdparty_dir = "#thirdparty/libjpeg-turbo"
+
+thirdparty_sources_common = [
+    "jaricom.c",
+    "jcapimin.c",
+    "jcarith.c",
+    "jchuff.c",
+    "jcicc.c",
+    "jcinit.c",
+    "jcmarker.c",
+    "jcmaster.c",
+    "jcomapi.c",
+    "jcparam.c",
+    "jcphuff.c",
+    "jctrans.c",
+    "jdapimin.c",
+    "jdarith.c",
+    "jdatadst.c",
+    "jdatadst-tj.c",
+    "jdatasrc.c",
+    "jdatasrc-tj.c",
+    "jdhuff.c",
+    "jdicc.c",
+    "jdinput.c",
+    "jdmarker.c",
+    "jdmaster.c",
+    "jdphuff.c",
+    "jdtrans.c",
+    "jerror.c",
+    "jfdctflt.c",
+    "jmemmgr.c",
+    "jmemnobs.c",
+    "jpeg_nbits.c",
+    "transupp.c",
+    "turbojpeg.c",
+]
+
+thirdparty_sources_bit_dependent = [
+    "jcapistd.c",
+    "jccoefct.c",
+    "jccolor.c",
+    "jcdctmgr.c",
+    "jcmainct.c",
+    "jcprepct.c",
+    "jcsample.c",
+    "jdcoefct.c",
+    "jdcolor.c",
+    "jdapistd.c",
+    "jddctmgr.c",
+    "jdmainct.c",
+    "jdmerge.c",
+    "jdpostct.c",
+    "jdsample.c",
+    "jfdctfst.c",
+    "jfdctint.c",
+    "jidctflt.c",
+    "jidctfst.c",
+    "jidctint.c",
+    "jidctred.c",
+    "jutils.c",
+    "jquant1.c",
+    "jquant2.c",
+]
+
+thirdparty_sources_by_bits = {
+    8: list(thirdparty_sources_bit_dependent),
+    12: list(thirdparty_sources_bit_dependent),
+}
+
+
+def source_paths(files):
+    return [thirdparty_dir + "/src/" + f for f in files]
+
+
+env_jpg.Prepend(CPPEXTPATH=[thirdparty_dir + "/src"])
+
+
+def add_bit_depth(bit_depth: int):
+    env_bit_depth = env_jpg.Clone()
+    env_bit_depth.disable_warnings()
+    env_bit_depth["OBJSUFFIX"] = f"_{bit_depth}{env_bit_depth['OBJSUFFIX']}"
+    env_bit_depth.Append(CPPDEFINES=[f"BITS_IN_JSAMPLE={bit_depth}"])
+    env_bit_depth.add_source_files(thirdparty_obj, source_paths(thirdparty_sources_by_bits[bit_depth]))
+
+
+add_bit_depth(8)
+add_bit_depth(12)
+
+env_thirdparty = env_jpg.Clone()
+env_thirdparty.disable_warnings()
+env_thirdparty.add_source_files(thirdparty_obj, source_paths(thirdparty_sources_common))
+env.modules_sources += thirdparty_obj
+
+# Godot source files
+
+module_obj = []
+
+env_jpg.add_source_files(module_obj, "*.cpp")
+env.modules_sources += module_obj
+
+# Needed to force rebuilding the module files when the thirdparty library is updated.
+env.Depends(module_obj, thirdparty_obj)

modules/jpg/config.py

@@ -0,0 +1,6 @@
+def can_build(env, platform):
+    return True
+
+
+def configure(env):
+    pass

modules/jpg/image_loader_libjpeg_turbo.cpp

@@ -0,0 +1,189 @@
+/**************************************************************************/
+/*  image_loader_libjpeg_turbo.cpp                                        */
+/**************************************************************************/
+/*                         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.                 */
+/**************************************************************************/
+
+#include "image_loader_libjpeg_turbo.h"
+
+#include <turbojpeg.h>
+
+Error jpeg_turbo_load_image_from_buffer(Image *p_image, const uint8_t *p_buffer, int p_buffer_len) {
+	tjhandle tj_instance = tj3Init(TJINIT_DECOMPRESS);
+	if (tj_instance == NULL) {
+		return FAILED;
+	}
+
+	if (tj3DecompressHeader(tj_instance, p_buffer, p_buffer_len) < 0) {
+		tj3Destroy(tj_instance);
+		return ERR_FILE_CORRUPT;
+	}
+
+	const unsigned int width = tj3Get(tj_instance, TJPARAM_JPEGWIDTH);
+	const unsigned int height = tj3Get(tj_instance, TJPARAM_JPEGHEIGHT);
+	const TJCS colorspace = (TJCS)tj3Get(tj_instance, TJPARAM_COLORSPACE);
+
+	if (tj3Get(tj_instance, TJPARAM_PRECISION) > 8) {
+		// Proceed anyway and convert to rgb8?
+		tj3Destroy(tj_instance);
+		return ERR_UNAVAILABLE;
+	}
+
+	TJPF tj_pixel_format;
+	Image::Format gd_pixel_format;
+	if (colorspace == TJCS_GRAY) {
+		tj_pixel_format = TJPF_GRAY;
+		gd_pixel_format = Image::FORMAT_L8;
+	} else {
+		// Force everything else (RGB, CMYK etc) into RGB8.
+		tj_pixel_format = TJPF_RGB;
+		gd_pixel_format = Image::FORMAT_RGB8;
+	}
+
+	Vector<uint8_t> data;
+	data.resize(width * height * tjPixelSize[tj_pixel_format]);
+
+	if (tj3Decompress8(tj_instance, p_buffer, p_buffer_len, data.ptrw(), 0, tj_pixel_format) < 0) {
+		tj3Destroy(tj_instance);
+		return ERR_FILE_CORRUPT;
+	}
+
+	tj3Destroy(tj_instance);
+	p_image->set_data(width, height, false, gd_pixel_format, data);
+	return OK;
+}
+
+Error ImageLoaderLibJPEGTurbo::load_image(Ref<Image> p_image, Ref<FileAccess> f, BitField<ImageFormatLoader::LoaderFlags> p_flags, float p_scale) {
+	Vector<uint8_t> src_image;
+	uint64_t src_image_len = f->get_length();
+	ERR_FAIL_COND_V(src_image_len == 0, ERR_FILE_CORRUPT);
+	src_image.resize(src_image_len);
+
+	uint8_t *w = src_image.ptrw();
+
+	f->get_buffer(&w[0], src_image_len);
+
+	Error err = jpeg_turbo_load_image_from_buffer(p_image.ptr(), w, src_image_len);
+
+	return err;
+}
+
+void ImageLoaderLibJPEGTurbo::get_recognized_extensions(List<String> *p_extensions) const {
+	p_extensions->push_back("jpg");
+	p_extensions->push_back("jpeg");
+}
+
+static Ref<Image> _jpeg_turbo_mem_loader_func(const uint8_t *p_data, int p_size) {
+	Ref<Image> img;
+	img.instantiate();
+	Error err = jpeg_turbo_load_image_from_buffer(img.ptr(), p_data, p_size);
+	ERR_FAIL_COND_V(err, Ref<Image>());
+	return img;
+}
+
+static Vector<uint8_t> _jpeg_turbo_buffer_save_func(const Ref<Image> &p_img, float p_quality) {
+	Vector<uint8_t> output;
+
+	ERR_FAIL_COND_V(p_img.is_null() || p_img->is_empty(), output);
+
+	Ref<Image> image = p_img->duplicate();
+	if (image->is_compressed()) {
+		Error error = image->decompress();
+		ERR_FAIL_COND_V_MSG(error != OK, output, "Couldn't decompress image.");
+	}
+
+	if (image->get_format() != Image::FORMAT_RGB8) {
+		// Allow grayscale L8?
+		image = image->duplicate();
+		image->convert(Image::FORMAT_RGB8);
+	}
+
+	tjhandle tj_instance = tj3Init(TJINIT_COMPRESS);
+	ERR_FAIL_COND_V_MSG(tj_instance == NULL, output, "Couldn't create tjhandle");
+
+	if (tj3Set(tj_instance, TJPARAM_QUALITY, (int)(p_quality * 100)) < 0) {
+		tj3Destroy(tj_instance);
+		ERR_FAIL_V_MSG(output, "Couldn't set jpg quality");
+	}
+
+	if (tj3Set(tj_instance, TJPARAM_PRECISION, 8) < 0) {
+		tj3Destroy(tj_instance);
+		ERR_FAIL_V_MSG(output, "Couldn't set jpg precision");
+	}
+
+	if (tj3Set(tj_instance, TJPARAM_SUBSAMP, TJSAMP_420) < 0) {
+		tj3Destroy(tj_instance);
+		ERR_FAIL_V_MSG(output, "Couldn't set jpg subsamples");
+	}
+
+	// If the godot image format is `Image::FORMAT_L8` we could set the appropriate
+	// color space here rather than defaulting to RGB.
+
+	unsigned char *jpeg_buff = NULL;
+	size_t jpeg_size = 0;
+	int code = tj3Compress8(
+			tj_instance,
+			image->get_data().ptr(),
+			image->get_width(),
+			0,
+			image->get_height(),
+			TJPF_RGB,
+			&jpeg_buff,
+			&jpeg_size);
+
+	if (code < 0) {
+		tj3Destroy(tj_instance);
+		tj3Free(jpeg_buff);
+		ERR_FAIL_V_MSG(output, "Couldn't compress jpg");
+	}
+
+	output.resize(jpeg_size);
+	memcpy(output.ptrw(), jpeg_buff, jpeg_size);
+
+	tj3Destroy(tj_instance);
+	tj3Free(jpeg_buff);
+
+	return output;
+}
+
+static Error _jpeg_turbo_save_func(const String &p_path, const Ref<Image> &p_img, float p_quality) {
+	Error err;
+	Ref<FileAccess> file = FileAccess::open(p_path, FileAccess::WRITE, &err);
+	ERR_FAIL_COND_V_MSG(err, err, vformat("Can't save JPG at path: '%s'.", p_path));
+
+	Vector<uint8_t> data = _jpeg_turbo_buffer_save_func(p_img, p_quality);
+	ERR_FAIL_COND_V(data.size() == 0, FAILED);
+	ERR_FAIL_COND_V_MSG(!file->store_buffer(data.ptr(), data.size()), FAILED, "Failed writing jpg to file");
+
+	return OK;
+}
+
+ImageLoaderLibJPEGTurbo::ImageLoaderLibJPEGTurbo() {
+	Image::_jpg_mem_loader_func = _jpeg_turbo_mem_loader_func;
+	Image::save_jpg_func = _jpeg_turbo_save_func;
+	Image::save_jpg_buffer_func = _jpeg_turbo_buffer_save_func;
+}

modules/jpg/image_loader_libjpeg_turbo.h

@@ -0,0 +1,40 @@
+/**************************************************************************/
+/*  image_loader_libjpeg_turbo.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 "core/io/image_loader.h"
+
+class ImageLoaderLibJPEGTurbo : public ImageFormatLoader {
+public:
+	virtual Error load_image(Ref<Image> p_image, Ref<FileAccess> f, BitField<ImageFormatLoader::LoaderFlags> p_flags, float p_scale);
+	virtual void get_recognized_extensions(List<String> *p_extensions) const;
+	ImageLoaderLibJPEGTurbo();
+};

modules/jpg/movie_writer_mjpeg.cpp

@@ -0,0 +1,263 @@
+/**************************************************************************/
+/*  movie_writer_mjpeg.cpp                                                */
+/**************************************************************************/
+/*                         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.                 */
+/**************************************************************************/
+
+#include "movie_writer_mjpeg.h"
+#include "core/config/project_settings.h"
+
+uint32_t MovieWriterMJPEG::get_audio_mix_rate() const {
+	return mix_rate;
+}
+AudioServer::SpeakerMode MovieWriterMJPEG::get_audio_speaker_mode() const {
+	return speaker_mode;
+}
+
+bool MovieWriterMJPEG::handles_file(const String &p_path) const {
+	return p_path.get_extension().to_lower() == "avi";
+}
+
+void MovieWriterMJPEG::get_supported_extensions(List<String> *r_extensions) const {
+	r_extensions->push_back("avi");
+}
+
+Error MovieWriterMJPEG::write_begin(const Size2i &p_movie_size, uint32_t p_fps, const String &p_base_path) {
+	// Quick & Dirty MJPEG Code based on - https://docs.microsoft.com/en-us/windows/win32/directshow/avi-riff-file-reference
+
+	base_path = p_base_path.get_basename();
+	if (base_path.is_relative_path()) {
+		base_path = "res://" + base_path;
+	}
+
+	base_path += ".avi";
+
+	f = FileAccess::open(base_path, FileAccess::WRITE_READ);
+
+	fps = p_fps;
+
+	ERR_FAIL_COND_V(f.is_null(), ERR_CANT_OPEN);
+
+	f->store_buffer((const uint8_t *)"RIFF", 4);
+	f->store_32(0); // Total length (update later)
+	f->store_buffer((const uint8_t *)"AVI ", 4);
+	f->store_buffer((const uint8_t *)"LIST", 4);
+	f->store_32(300); // 4 + 4 + 4 + 56 + 4 + 4 + 132 + 4 + 4 + 84
+	f->store_buffer((const uint8_t *)"hdrl", 4);
+	f->store_buffer((const uint8_t *)"avih", 4);
+	f->store_32(56);
+
+	f->store_32(1000000 / p_fps); // Microsecs per frame.
+	f->store_32(7000); // Max bytes per second
+	f->store_32(0); // Padding Granularity
+	f->store_32(16);
+	total_frames_ofs = f->get_position();
+	f->store_32(0); // Total frames (update later)
+	f->store_32(0); // Initial frames
+	f->store_32(1); // Streams
+	f->store_32(0); // Suggested buffer size
+	f->store_32(p_movie_size.width); // Movie Width
+	f->store_32(p_movie_size.height); // Movie Height
+	for (uint32_t i = 0; i < 4; i++) {
+		f->store_32(0); // Reserved.
+	}
+	f->store_buffer((const uint8_t *)"LIST", 4);
+	f->store_32(132); // 4 + 4 + 4 + 48 + 4 + 4 + 40 + 4 + 4 + 16
+	f->store_buffer((const uint8_t *)"strl", 4);
+	f->store_buffer((const uint8_t *)"strh", 4);
+	f->store_32(48);
+	f->store_buffer((const uint8_t *)"vids", 4);
+	f->store_buffer((const uint8_t *)"MJPG", 4);
+	f->store_32(0); // Flags
+	f->store_16(0); // Priority
+	f->store_16(0); // Language
+	f->store_32(0); // Initial Frames
+	f->store_32(1); // Scale
+	f->store_32(p_fps); // FPS
+	f->store_32(0); // Start
+	total_frames_ofs2 = f->get_position();
+	f->store_32(0); // Number of frames (to be updated later)
+	f->store_32(0); // Suggested Buffer Size
+	f->store_32(0); // Quality
+	f->store_32(0); // Sample Size
+
+	f->store_buffer((const uint8_t *)"strf", 4);
+	f->store_32(40); // Size.
+	f->store_32(40); // Size.
+
+	f->store_32(p_movie_size.width); // Width
+	f->store_32(p_movie_size.height); // Width
+	f->store_16(1); // Planes
+	f->store_16(24); // Bitcount
+	f->store_buffer((const uint8_t *)"MJPG", 4); // Compression
+
+	f->store_32(((p_movie_size.width * 24 / 8 + 3) & 0xFFFFFFFC) * p_movie_size.height); // SizeImage
+	f->store_32(0); // XPelsXMeter
+	f->store_32(0); // YPelsXMeter
+	f->store_32(0); // ClrUsed
+	f->store_32(0); // ClrImportant
+
+	f->store_buffer((const uint8_t *)"LIST", 4);
+	f->store_32(16);
+
+	f->store_buffer((const uint8_t *)"odml", 4);
+	f->store_buffer((const uint8_t *)"dmlh", 4);
+	f->store_32(4); // sizes
+
+	total_frames_ofs3 = f->get_position();
+	f->store_32(0); // Number of frames (to be updated later)
+
+	// Audio //
+
+	const uint32_t bit_depth = 32;
+	uint32_t channels = 2;
+	switch (speaker_mode) {
+		case AudioServer::SPEAKER_MODE_STEREO:
+			channels = 2;
+			break;
+		case AudioServer::SPEAKER_SURROUND_31:
+			channels = 4;
+			break;
+		case AudioServer::SPEAKER_SURROUND_51:
+			channels = 6;
+			break;
+		case AudioServer::SPEAKER_SURROUND_71:
+			channels = 8;
+			break;
+	}
+	uint32_t blockalign = bit_depth / 8 * channels;
+
+	f->store_buffer((const uint8_t *)"LIST", 4);
+	f->store_32(84); // 4 + 4 + 4 + 48 + 4 + 4 + 16
+	f->store_buffer((const uint8_t *)"strl", 4);
+	f->store_buffer((const uint8_t *)"strh", 4);
+	f->store_32(48);
+	f->store_buffer((const uint8_t *)"auds", 4);
+	f->store_32(0); // Handler
+	f->store_32(0); // Flags
+	f->store_16(0); // Priority
+	f->store_16(0); // Language
+	f->store_32(0); // Initial Frames
+	f->store_32(blockalign); // Scale
+	f->store_32(mix_rate * blockalign); // mix rate
+	f->store_32(0); // Start
+	total_audio_frames_ofs4 = f->get_position();
+	f->store_32(0); // Number of frames (to be updated later)
+	f->store_32(12288); // Suggested Buffer Size
+	f->store_32(0xFFFFFFFF); // Quality
+	f->store_32(blockalign); // Block Align to 32 bits
+
+	audio_block_size = (mix_rate / fps) * blockalign;
+
+	f->store_buffer((const uint8_t *)"strf", 4);
+	f->store_32(16); // Standard format, no extra fields
+	f->store_16(1); // Compression code, standard PCM
+	f->store_16(channels);
+	f->store_32(mix_rate); // Samples (frames) / Sec
+	f->store_32(mix_rate * blockalign); // Bytes / sec
+	f->store_16(blockalign); // Bytes / sec
+	f->store_16(bit_depth); // Bytes / sec
+
+	f->store_buffer((const uint8_t *)"LIST", 4);
+	movi_data_ofs = f->get_position();
+	f->store_32(0); // Number of frames (to be updated later)
+	f->store_buffer((const uint8_t *)"movi", 4);
+
+	return OK;
+}
+
+Error MovieWriterMJPEG::write_frame(const Ref<Image> &p_image, const int32_t *p_audio_data) {
+	ERR_FAIL_COND_V(f.is_null(), ERR_UNCONFIGURED);
+
+	Vector<uint8_t> jpg_buffer = p_image->save_jpg_to_buffer(quality);
+	uint32_t s = jpg_buffer.size();
+
+	f->store_buffer((const uint8_t *)"00db", 4); // Stream 0, Video
+	f->store_32(jpg_buffer.size()); // sizes
+	f->store_buffer(jpg_buffer.ptr(), jpg_buffer.size());
+	if (jpg_buffer.size() & 1) {
+		f->store_8(0);
+		s++;
+	}
+	jpg_frame_sizes.push_back(s);
+
+	f->store_buffer((const uint8_t *)"01wb", 4); // Stream 1, Audio.
+	f->store_32(audio_block_size);
+	f->store_buffer((const uint8_t *)p_audio_data, audio_block_size);
+
+	frame_count++;
+
+	return OK;
+}
+
+void MovieWriterMJPEG::write_end() {
+	if (f.is_valid()) {
+		// Finalize the file (frame indices)
+		f->store_buffer((const uint8_t *)"idx1", 4);
+		f->store_32(8 * 4 * frame_count);
+		uint32_t ofs = 4;
+		uint32_t all_data_size = 0;
+		for (uint32_t i = 0; i < frame_count; i++) {
+			f->store_buffer((const uint8_t *)"00db", 4);
+			f->store_32(16); // AVI_KEYFRAME
+			f->store_32(ofs);
+			f->store_32(jpg_frame_sizes[i]);
+
+			ofs += jpg_frame_sizes[i] + 8;
+
+			f->store_buffer((const uint8_t *)"01wb", 4);
+			f->store_32(16); // AVI_KEYFRAME
+			f->store_32(ofs);
+			f->store_32(audio_block_size);
+
+			ofs += audio_block_size + 8;
+			all_data_size += jpg_frame_sizes[i] + audio_block_size;
+		}
+
+		uint32_t file_size = f->get_position();
+		f->seek(4);
+		f->store_32(file_size - 78);
+		f->seek(total_frames_ofs);
+		f->store_32(frame_count);
+		f->seek(total_frames_ofs2);
+		f->store_32(frame_count);
+		f->seek(total_frames_ofs3);
+		f->store_32(frame_count);
+		f->seek(total_audio_frames_ofs4);
+		f->store_32(frame_count * mix_rate / fps);
+		f->seek(movi_data_ofs);
+		f->store_32(all_data_size + 4 + 16 * frame_count);
+
+		f.unref();
+	}
+}
+
+MovieWriterMJPEG::MovieWriterMJPEG() {
+	mix_rate = GLOBAL_GET("editor/movie_writer/mix_rate");
+	speaker_mode = AudioServer::SpeakerMode(int(GLOBAL_GET("editor/movie_writer/speaker_mode")));
+	quality = GLOBAL_GET("editor/movie_writer/video_quality");
+}

modules/jpg/movie_writer_mjpeg.h

@@ -0,0 +1,70 @@
+/**************************************************************************/
+/*  movie_writer_mjpeg.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/movie_writer/movie_writer.h"
+
+class MovieWriterMJPEG : public MovieWriter {
+	GDCLASS(MovieWriterMJPEG, 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;
+	float quality = 0.75;
+
+	uint32_t audio_block_size = 0;
+
+	Vector<uint32_t> jpg_frame_sizes;
+
+	uint64_t total_frames_ofs = 0;
+	uint64_t total_frames_ofs2 = 0;
+	uint64_t total_frames_ofs3 = 0;
+	uint64_t total_audio_frames_ofs4 = 0;
+	uint64_t movi_data_ofs = 0;
+
+	Ref<FileAccess> f;
+
+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:
+	MovieWriterMJPEG();
+};

modules/jpg/register_types.cpp

@@ -0,0 +1,74 @@
+/**************************************************************************/
+/*  register_types.cpp                                                    */
+/**************************************************************************/
+/*                         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.                 */
+/**************************************************************************/
+
+#include "register_types.h"
+
+#include "image_loader_libjpeg_turbo.h"
+#include "movie_writer_mjpeg.h"
+
+static Ref<ImageLoaderLibJPEGTurbo> image_loader_libjpeg_turbo;
+static MovieWriterMJPEG *writer_mjpeg = nullptr;
+
+void initialize_jpg_module(ModuleInitializationLevel p_level) {
+	switch (p_level) {
+		case MODULE_INITIALIZATION_LEVEL_SERVERS: {
+			if (GD_IS_CLASS_ENABLED(MovieWriterMJPEG)) {
+				writer_mjpeg = memnew(MovieWriterMJPEG);
+				MovieWriter::add_writer(writer_mjpeg);
+			}
+		} break;
+
+		case MODULE_INITIALIZATION_LEVEL_SCENE: {
+			image_loader_libjpeg_turbo.instantiate();
+			ImageLoader::add_image_format_loader(image_loader_libjpeg_turbo);
+		} break;
+
+		default:
+			break;
+	}
+}
+
+void uninitialize_jpg_module(ModuleInitializationLevel p_level) {
+	switch (p_level) {
+		case MODULE_INITIALIZATION_LEVEL_SCENE: {
+			ImageLoader::remove_image_format_loader(image_loader_libjpeg_turbo);
+			image_loader_libjpeg_turbo.unref();
+		} break;
+
+		case MODULE_INITIALIZATION_LEVEL_SERVERS: {
+			if (GD_IS_CLASS_ENABLED(MovieWriterMJPEG)) {
+				memdelete(writer_mjpeg);
+			}
+		} break;
+
+		default:
+			break;
+	}
+}

modules/jpg/register_types.h

@@ -0,0 +1,36 @@
+/**************************************************************************/
+/*  register_types.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 "modules/register_module_types.h"
+
+void initialize_jpg_module(ModuleInitializationLevel p_level);
+void uninitialize_jpg_module(ModuleInitializationLevel p_level);