d8223ffa75
That year should bring the long-awaited OpenGL ES 3.0 compatible renderer
with state-of-the-art rendering techniques tuned to work as low as middle
end handheld devices - without compromising with the possibilities given
for higher end desktop games of course. Great times ahead for the Godot
community and the gamers that will play our games!
(cherry picked from commit c7bc44d5ad)
274 lines
7.1 KiB
C++
274 lines
7.1 KiB
C++
/*************************************************************************/
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/* resource_format_wav.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
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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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#include "resource_format_wav.h"
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#include "os/file_access.h"
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#include "scene/resources/sample.h"
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RES ResourceFormatLoaderWAV::load(const String &p_path, const String& p_original_path, Error *r_error) {
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if (r_error)
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*r_error=ERR_FILE_CANT_OPEN;
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Error err;
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FileAccess *file=FileAccess::open(p_path, FileAccess::READ,&err);
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ERR_FAIL_COND_V( err!=OK, RES() );
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if (r_error)
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*r_error=ERR_FILE_CORRUPT;
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/* CHECK RIFF */
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char riff[5];
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riff[4]=0;
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file->get_buffer((uint8_t*)&riff,4); //RIFF
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if (riff[0]!='R' || riff[1]!='I' || riff[2]!='F' || riff[3]!='F') {
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file->close();
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memdelete(file);
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ERR_FAIL_V( RES() );
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}
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/* GET FILESIZE */
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uint32_t filesize=file->get_32();
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/* CHECK WAVE */
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char wave[4];
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file->get_buffer((uint8_t*)&wave,4); //RIFF
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if (wave[0]!='W' || wave[1]!='A' || wave[2]!='V' || wave[3]!='E') {
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file->close();
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memdelete(file);
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ERR_EXPLAIN("Not a WAV file (no WAVE RIFF Header)")
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ERR_FAIL_V( RES() );
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}
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bool format_found=false;
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bool data_found=false;
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int format_bits=0;
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int format_channels=0;
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int format_freq=0;
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Sample::LoopFormat loop=Sample::LOOP_NONE;
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int loop_begin=0;
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int loop_end=0;
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Ref<Sample> sample( memnew( Sample ) );
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while (!file->eof_reached()) {
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/* chunk */
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char chunkID[4];
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file->get_buffer((uint8_t*)&chunkID,4); //RIFF
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/* chunk size */
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uint32_t chunksize=file->get_32();
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uint32_t file_pos=file->get_pos(); //save file pos, so we can skip to next chunk safely
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if (file->eof_reached()) {
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//ERR_PRINT("EOF REACH");
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break;
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}
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if (chunkID[0]=='f' && chunkID[1]=='m' && chunkID[2]=='t' && chunkID[3]==' ' && !format_found) {
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/* IS FORMAT CHUNK */
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uint16_t compression_code=file->get_16();
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if (compression_code!=1) {
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ERR_PRINT("Format not supported for WAVE file (not PCM). Save WAVE files as uncompressed PCM instead.");
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break;
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}
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format_channels=file->get_16();
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if (format_channels!=1 && format_channels !=2) {
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ERR_PRINT("Format not supported for WAVE file (not stereo or mono)");
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break;
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}
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format_freq=file->get_32(); //sampling rate
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file->get_32(); // average bits/second (unused)
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file->get_16(); // block align (unused)
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format_bits=file->get_16(); // bits per sample
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if (format_bits%8) {
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ERR_PRINT("Strange number of bits in sample (not 8,16,24,32)");
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break;
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}
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/* Dont need anything else, continue */
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format_found=true;
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}
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if (chunkID[0]=='d' && chunkID[1]=='a' && chunkID[2]=='t' && chunkID[3]=='a' && !data_found) {
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/* IS FORMAT CHUNK */
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data_found=true;
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if (!format_found) {
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ERR_PRINT("'data' chunk before 'format' chunk found.");
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break;
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}
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int frames=chunksize;
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frames/=format_channels;
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frames/=(format_bits>>3);
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/*print_line("chunksize: "+itos(chunksize));
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print_line("channels: "+itos(format_channels));
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print_line("bits: "+itos(format_bits));
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*/
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sample->create(
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(format_bits==8) ? Sample::FORMAT_PCM8 : Sample::FORMAT_PCM16,
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(format_channels==2)?true:false,
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frames );
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sample->set_mix_rate( format_freq );
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int len=frames;
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if (format_channels==2)
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len*=2;
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if (format_bits>8)
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len*=2;
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DVector<uint8_t> data;
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data.resize(len);
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DVector<uint8_t>::Write dataw = data.write();
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void * data_ptr = dataw.ptr();
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for (int i=0;i<frames;i++) {
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for (int c=0;c<format_channels;c++) {
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if (format_bits==8) {
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// 8 bit samples are UNSIGNED
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uint8_t s = file->get_8();
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s-=128;
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int8_t *sp=(int8_t*)&s;
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int8_t *data_ptr8=&((int8_t*)data_ptr)[i*format_channels+c];
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*data_ptr8=*sp;
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} else {
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//16+ bits samples are SIGNED
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// if sample is > 16 bits, just read extra bytes
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uint32_t data=0;
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for (int b=0;b<(format_bits>>3);b++) {
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data|=((uint32_t)file->get_8())<<(b*8);
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}
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data<<=(32-format_bits);
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int32_t s=data;
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int16_t *data_ptr16=&((int16_t*)data_ptr)[i*format_channels+c];
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*data_ptr16=s>>16;
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}
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}
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}
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dataw=DVector<uint8_t>::Write();
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sample->set_data(data);
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if (file->eof_reached()) {
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file->close();
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memdelete(file);
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ERR_EXPLAIN("Premature end of file.");
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ERR_FAIL_V(RES());
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}
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}
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if (chunkID[0]=='s' && chunkID[1]=='m' && chunkID[2]=='p' && chunkID[3]=='l') {
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//loop point info!
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for(int i=0;i<10;i++)
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file->get_32(); // i wish to know why should i do this... no doc!
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loop=file->get_32()?Sample::LOOP_PING_PONG:Sample::LOOP_FORWARD;
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loop_begin=file->get_32();
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loop_end=file->get_32();
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}
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file->seek( file_pos+chunksize );
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}
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sample->set_loop_format(loop);
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sample->set_loop_begin(loop_begin);
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sample->set_loop_end(loop_end);
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file->close();
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memdelete(file);
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if (r_error)
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*r_error=OK;
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return sample;
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}
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void ResourceFormatLoaderWAV::get_recognized_extensions(List<String> *p_extensions) const {
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p_extensions->push_back("wav");
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}
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bool ResourceFormatLoaderWAV::handles_type(const String& p_type) const {
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return (p_type=="Sample");
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}
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String ResourceFormatLoaderWAV::get_resource_type(const String &p_path) const {
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if (p_path.extension().to_lower()=="wav")
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return "Sample";
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return "";
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}
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