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