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godot/editor/plugins/sample_editor_plugin.cpp
Hein-Pieter van Braam cacced7e50 Convert Object::cast_to() to the static version 
Currently we rely on some undefined behavior when Object->cast_to() gets
called with a Null pointer. This used to work fine with GCC < 6 but
newer versions of GCC remove all codepaths in which the this pointer is
Null. However, the non-static cast_to() was supposed to be null safe.

This patch makes cast_to() Null safe and removes the now redundant Null
checks where they existed.

It is explained in this article: https://www.viva64.com/en/b/0226/
2017-08-24 23:08:24 +02:00

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/*************************************************************************/
/* sample_editor_plugin.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md) */
/* */
/* 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 "sample_editor_plugin.h"
#if 0
#include "editor/editor_settings.h"
#include "io/resource_loader.h"
#include "project_settings.h"
void SampleEditor::_gui_input(InputEvent p_event) {
}
void SampleEditor::_notification(int p_what) {
if (p_what==NOTIFICATION_FIXED_PROCESS) {
}
if (p_what==NOTIFICATION_ENTER_TREE) {
play->set_icon( get_icon("Play","EditorIcons") );
stop->set_icon( get_icon("Stop","EditorIcons") );
}
if (p_what==NOTIFICATION_READY) {
//get_scene()->connect("node_removed",this,"_node_removed");
}
if (p_what==NOTIFICATION_DRAW) {
}
}
void SampleEditor::_play_pressed() {
player->play("default",true);
stop->set_pressed(false);
play->set_pressed(true);
}
void SampleEditor::_stop_pressed() {
player->stop_all();
play->set_pressed(false);
}
void SampleEditor::generate_preview_texture(const Ref<Sample>& p_sample,Ref<ImageTexture> &p_texture) {
PoolVector<uint8_t> data = p_sample->get_data();
PoolVector<uint8_t> img;
int w = p_texture->get_width();
int h = p_texture->get_height();
img.resize(w*h*3);
PoolVector<uint8_t>::Write imgdata = img.write();
uint8_t * imgw = imgdata.ptr();
PoolVector<uint8_t>::Read sampledata = data.read();
const uint8_t *sdata=sampledata.ptr();
bool stereo = p_sample->is_stereo();
bool _16=p_sample->get_format()==Sample::FORMAT_PCM16;
int len = p_sample->get_length();
if (len<1)
return;
if (p_sample->get_format()==Sample::FORMAT_IMA_ADPCM) {
struct IMA_ADPCM_State {
int16_t step_index;
int32_t predictor;
/* values at loop point */
int16_t loop_step_index;
int32_t loop_predictor;
int32_t last_nibble;
int32_t loop_pos;
int32_t window_ofs;
const uint8_t *ptr;
} ima_adpcm;
ima_adpcm.step_index=0;
ima_adpcm.predictor=0;
ima_adpcm.loop_step_index=0;
ima_adpcm.loop_predictor=0;
ima_adpcm.last_nibble=-1;
ima_adpcm.loop_pos=0x7FFFFFFF;
ima_adpcm.window_ofs=0;
ima_adpcm.ptr=NULL;
for(int i=0;i<w;i++) {
float max[2]={-1e10,-1e10};
float min[2]={1e10,1e10};
int from = i*len/w;
int to = (i+1)*len/w;
if (to>=len)
to=len-1;
for(int j=from;j<to;j++) {
while(j>ima_adpcm.last_nibble) {
static const int16_t _ima_adpcm_step_table[89] = {
7, 8, 9, 10, 11, 12, 13, 14, 16, 17,
19, 21, 23, 25, 28, 31, 34, 37, 41, 45,
50, 55, 60, 66, 73, 80, 88, 97, 107, 118,
130, 143, 157, 173, 190, 209, 230, 253, 279, 307,
337, 371, 408, 449, 494, 544, 598, 658, 724, 796,
876, 963, 1060, 1166, 1282, 1411, 1552, 1707, 1878, 2066,
2272, 2499, 2749, 3024, 3327, 3660, 4026, 4428, 4871, 5358,
5894, 6484, 7132, 7845, 8630, 9493, 10442, 11487, 12635, 13899,
15289, 16818, 18500, 20350, 22385, 24623, 27086, 29794, 32767
};
static const int8_t _ima_adpcm_index_table[16] = {
-1, -1, -1, -1, 2, 4, 6, 8,
-1, -1, -1, -1, 2, 4, 6, 8
};
int16_t nibble,diff,step;
ima_adpcm.last_nibble++;
const uint8_t *src_ptr=sdata;
int ofs = ima_adpcm.last_nibble>>1;
if (stereo)
ofs*=2;
nibble = (ima_adpcm.last_nibble&1)?
(src_ptr[ofs]>>4):(src_ptr[ofs]&0xF);
step=_ima_adpcm_step_table[ima_adpcm.step_index];
ima_adpcm.step_index += _ima_adpcm_index_table[nibble];
if (ima_adpcm.step_index<0)
ima_adpcm.step_index=0;
if (ima_adpcm.step_index>88)
ima_adpcm.step_index=88;
diff = step >> 3 ;
if (nibble & 1)
diff += step >> 2 ;
if (nibble & 2)
diff += step >> 1 ;
if (nibble & 4)
diff += step ;
if (nibble & 8)
diff = -diff ;
ima_adpcm.predictor+=diff;
if (ima_adpcm.predictor<-0x8000)
ima_adpcm.predictor=-0x8000;
else if (ima_adpcm.predictor>0x7FFF)
ima_adpcm.predictor=0x7FFF;
/* store loop if there */
if (ima_adpcm.last_nibble==ima_adpcm.loop_pos) {
ima_adpcm.loop_step_index = ima_adpcm.step_index;
ima_adpcm.loop_predictor = ima_adpcm.predictor;
}
}
float v=ima_adpcm.predictor/32767.0;
if (v>max[0])
max[0]=v;
if (v<min[0])
min[0]=v;
}
for(int j=0;j<h;j++) {
float v = (j/(float)h) * 2.0 - 1.0;
uint8_t* imgofs = &imgw[(uint64_t(j)*w+i)*3];
if (v>min[0] && v<max[0]) {
imgofs[0]=255;
imgofs[1]=150;
imgofs[2]=80;
} else {
imgofs[0]=0;
imgofs[1]=0;
imgofs[2]=0;
}
}
}
} else {
for(int i=0;i<w;i++) {
// i trust gcc will optimize this loop
float max[2]={-1e10,-1e10};
float min[2]={1e10,1e10};
int c=stereo?2:1;
int from = uint64_t(i)*len/w;
int to = (uint64_t(i)+1)*len/w;
if (to>=len)
to=len-1;
if (_16) {
const int16_t*src =(const int16_t*)sdata;
for(int j=0;j<c;j++) {
for(int k=from;k<=to;k++) {
float v = src[uint64_t(k)*c+j]/32768.0;
if (v>max[j])
max[j]=v;
if (v<min[j])
min[j]=v;
}
}
} else {
const int8_t*src =(const int8_t*)sdata;
for(int j=0;j<c;j++) {
for(int k=from;k<=to;k++) {
float v = src[uint64_t(k)*c+j]/128.0;
if (v>max[j])
max[j]=v;
if (v<min[j])
min[j]=v;
}
}
}
if (!stereo) {
for(int j=0;j<h;j++) {
float v = (j/(float)h) * 2.0 - 1.0;
uint8_t* imgofs = &imgw[(uint64_t(j)*w+i)*3];
if (v>min[0] && v<max[0]) {
imgofs[0]=255;
imgofs[1]=150;
imgofs[2]=80;
} else {
imgofs[0]=0;
imgofs[1]=0;
imgofs[2]=0;
}
}
} else {
for(int j=0;j<h;j++) {
int half;
float v;
if (j<(h/2)) {
half=0;
v = (j/(float)(h/2)) * 2.0 - 1.0;
} else {
half=1;
v = ((j-(h/2))/(float)(h/2)) * 2.0 - 1.0;
}
uint8_t* imgofs = &imgw[(uint64_t(j)*w+i)*3];
if (v>min[half] && v<max[half]) {
imgofs[0]=255;
imgofs[1]=150;
imgofs[2]=80;
} else {
imgofs[0]=0;
imgofs[1]=0;
imgofs[2]=0;
}
}
}
}
}
imgdata = PoolVector<uint8_t>::Write();
p_texture->set_data(Image(w,h,0,Image::FORMAT_RGB8,img));
}
void SampleEditor::_update_sample() {
player->stop_all();
generate_preview_texture(sample,peakdisplay);
info_label->set_text(TTR("Length:")+" "+String::num(sample->get_length()/(float)sample->get_mix_rate(),2)+"s");
if (library->has_sample("default"))
library->remove_sample("default");
library->add_sample("default",sample);
}
void SampleEditor::edit(Ref<Sample> p_sample) {
sample=p_sample;
if (!sample.is_null())
_update_sample();
else {
hide();
set_fixed_process(false);
}
}
void SampleEditor::_bind_methods() {
ClassDB::bind_method(D_METHOD("_gui_input"),&SampleEditor::_gui_input);
ClassDB::bind_method(D_METHOD("_play_pressed"),&SampleEditor::_play_pressed);
ClassDB::bind_method(D_METHOD("_stop_pressed"),&SampleEditor::_stop_pressed);
}
SampleEditor::SampleEditor() {
player = memnew(SamplePlayer);
add_child(player);
add_style_override("panel", EditorNode::get_singleton()->get_gui_base()->get_stylebox("panel","Panel"));
library = Ref<SampleLibrary>(memnew(SampleLibrary));
player->set_sample_library(library);
sample_texframe = memnew( TextureRect );
add_child(sample_texframe);
sample_texframe->set_anchor_and_margin(MARGIN_LEFT,ANCHOR_BEGIN,5);
sample_texframe->set_anchor_and_margin(MARGIN_RIGHT,ANCHOR_END,-5);
sample_texframe->set_anchor_and_margin(MARGIN_TOP,ANCHOR_BEGIN,30);
sample_texframe->set_anchor_and_margin(MARGIN_BOTTOM,ANCHOR_END,-5);
info_label = memnew( Label );
sample_texframe->add_child(info_label);
info_label->set_area_as_parent_rect();
info_label->set_anchor_and_margin(MARGIN_TOP,ANCHOR_END,-15);
info_label->set_margin(MARGIN_BOTTOM,-4);
info_label->set_margin(MARGIN_RIGHT,-4);
info_label->set_align(Label::ALIGN_RIGHT);
play = memnew( Button );
play->set_position(Point2( 5, 5 ));
play->set_size( Size2(1,1 ) );
play->set_toggle_mode(true);
add_child(play);
stop = memnew( Button );
stop->set_position(Point2( 35, 5 ));
stop->set_size( Size2(1,1 ) );
stop->set_toggle_mode(true);
add_child(stop);
peakdisplay=Ref<ImageTexture>( memnew( ImageTexture) );
peakdisplay->create( EDITOR_DEF("editors/sample_editor/preview_width",512),EDITOR_DEF("editors/sample_editor/preview_height",128),Image::FORMAT_RGB8);
sample_texframe->set_expand(true);
sample_texframe->set_texture(peakdisplay);
play->connect("pressed", this,"_play_pressed");
stop->connect("pressed", this,"_stop_pressed");
set_custom_minimum_size(Size2(1,150)*EDSCALE);
}
void SampleEditorPlugin::edit(Object *p_object) {
Sample * s = Object::cast_to<Sample>(p_object);
if (!s)
return;
sample_editor->edit(Ref<Sample>(s));
}
bool SampleEditorPlugin::handles(Object *p_object) const {
return p_object->is_class("Sample");
}
void SampleEditorPlugin::make_visible(bool p_visible) {
if (p_visible) {
sample_editor->show();
//sample_editor->set_process(true);
} else {
sample_editor->hide();
//sample_editor->set_process(false);
}
}
SampleEditorPlugin::SampleEditorPlugin(EditorNode *p_node) {
editor=p_node;
sample_editor = memnew( SampleEditor );
add_control_to_container(CONTAINER_PROPERTY_EDITOR_BOTTOM,sample_editor);
sample_editor->hide();
}
SampleEditorPlugin::~SampleEditorPlugin()
{
}
#endif
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