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+/*************************************************************************/
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+/* movie_writer_pngwav.cpp */
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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) 2007-2022 Juan Linietsky, Ariel Manzur. */
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+/* Copyright (c) 2014-2022 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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+
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+#include "movie_writer_pngwav.h"
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+#include "core/config/project_settings.h"
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+#include "core/io/dir_access.h"
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+
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+uint32_t MovieWriterPNGWAV::get_audio_mix_rate() const {
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+ return mix_rate;
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+}
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+AudioServer::SpeakerMode MovieWriterPNGWAV::get_audio_speaker_mode() const {
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+ return speaker_mode;
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+}
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+
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+void MovieWriterPNGWAV::get_supported_extensions(List<String> *r_extensions) const {
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+ r_extensions->push_back("png");
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+}
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+
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+bool MovieWriterPNGWAV::handles_file(const String &p_path) const {
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+ return p_path.get_extension().to_lower() == "png";
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+}
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+
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+String MovieWriterPNGWAV::zeros_str(uint32_t p_index) {
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+ char zeros[MAX_TRAILING_ZEROS + 1];
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+ for (uint32_t i = 0; i < MAX_TRAILING_ZEROS; i++) {
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+ uint32_t idx = MAX_TRAILING_ZEROS - i - 1;
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+ uint32_t digit = (p_index / uint32_t(Math::pow(double(10), double(idx)))) % 10;
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+ zeros[i] = '0' + digit;
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+ }
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+ zeros[MAX_TRAILING_ZEROS] = 0;
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+ return zeros;
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+}
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+
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+Error MovieWriterPNGWAV::write_begin(const Size2i &p_movie_size, uint32_t p_fps, const String &p_base_path) {
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+ // Quick & Dirty PNGWAV Code based on - https://docs.microsoft.com/en-us/windows/win32/directshow/avi-riff-file-reference
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+
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+ base_path = p_base_path.get_basename();
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+ if (base_path.is_relative_path()) {
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+ base_path = "res://" + base_path;
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+ }
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+
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+ {
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+ //Remove existing files before writing anew
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+ uint32_t idx = 0;
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+ Ref<DirAccess> d = DirAccess::open(base_path.get_base_dir());
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+ String file = base_path.get_file();
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+ while (true) {
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+ String path = file + zeros_str(idx) + ".png";
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+ if (d->remove(path) != OK) {
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+ break;
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+ }
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+ }
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+ }
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+
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+ f_wav = FileAccess::open(base_path + ".wav", FileAccess::WRITE_READ);
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+ ERR_FAIL_COND_V(f_wav.is_null(), ERR_CANT_OPEN);
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+
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+ fps = p_fps;
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+
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+ f_wav->store_buffer((const uint8_t *)"RIFF", 4);
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+ int total_size = 4 /* WAVE */ + 8 /* fmt+size */ + 16 /* format */ + 8 /* data+size */;
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+ f_wav->store_32(total_size); //will store final later
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+ f_wav->store_buffer((const uint8_t *)"WAVE", 4);
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+
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+ /* FORMAT CHUNK */
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+
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+ f_wav->store_buffer((const uint8_t *)"fmt ", 4);
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+
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+ uint32_t channels = 2;
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+ switch (speaker_mode) {
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+ case AudioServer::SPEAKER_MODE_STEREO:
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+ channels = 2;
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+ break;
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+ case AudioServer::SPEAKER_SURROUND_31:
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+ channels = 4;
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+ break;
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+ case AudioServer::SPEAKER_SURROUND_51:
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+ channels = 6;
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+ break;
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+ case AudioServer::SPEAKER_SURROUND_71:
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+ channels = 8;
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+ break;
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+ }
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+
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+ f_wav->store_32(16); //standard format, no extra fields
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+ f_wav->store_16(1); // compression code, standard PCM
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+ f_wav->store_16(channels); //CHANNELS: 2
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+
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+ f_wav->store_32(mix_rate);
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+
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+ /* useless stuff the format asks for */
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+
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+ int bits_per_sample = 32;
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+ int blockalign = bits_per_sample / 8 * channels;
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+ int bytes_per_sec = mix_rate * blockalign;
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+
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+ audio_block_size = (mix_rate / fps) * blockalign;
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+
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+ f_wav->store_32(bytes_per_sec);
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+ f_wav->store_16(blockalign); // block align (unused)
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+ f_wav->store_16(bits_per_sample);
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+
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+ /* DATA CHUNK */
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+
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+ f_wav->store_buffer((const uint8_t *)"data", 4);
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+
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+ f_wav->store_32(0); //data size... wooh
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+ wav_data_size_pos = f_wav->get_position();
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+
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+ return OK;
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+}
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+
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+Error MovieWriterPNGWAV::write_frame(const Ref<Image> &p_image, const int32_t *p_audio_data) {
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+ ERR_FAIL_COND_V(!f_wav.is_valid(), ERR_UNCONFIGURED);
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+
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+ Vector<uint8_t> png_buffer = p_image->save_png_to_buffer();
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+
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+ Ref<FileAccess> fi = FileAccess::open(base_path + zeros_str(frame_count) + ".png", FileAccess::WRITE);
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+ fi->store_buffer(png_buffer.ptr(), png_buffer.size());
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+ f_wav->store_buffer((const uint8_t *)p_audio_data, audio_block_size);
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+
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+ frame_count++;
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+
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+ return OK;
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+}
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+
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+void MovieWriterPNGWAV::write_end() {
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+ if (f_wav.is_valid()) {
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+ uint32_t total_size = 4 /* WAVE */ + 8 /* fmt+size */ + 16 /* format */ + 8 /* data+size */;
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+ uint32_t datasize = f_wav->get_position() - wav_data_size_pos;
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+ f_wav->seek(4);
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+ f_wav->store_32(total_size + datasize);
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+ f_wav->seek(0x28);
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+ f_wav->store_32(datasize);
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+ }
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+}
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+
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+MovieWriterPNGWAV::MovieWriterPNGWAV() {
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+ mix_rate = GLOBAL_GET("editor/movie_writer/mix_rate");
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+ speaker_mode = AudioServer::SpeakerMode(int(GLOBAL_GET("editor/movie_writer/speaker_mode")));
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+}
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Rémi Verschelde