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obs-streamFX
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obs-streamFX/source/gfx-effect-source.cpp

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// Modern effects for a modern Streamer
// Copyright (C) 2017 Michael Fabian Dirks
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
#include "gfx-effect-source.h"
#include "strings.h"
#include <util/platform.h>
#include <fstream>
bool gfx::effect_source::property_type_modified(void*, obs_properties_t* props, obs_property_t*, obs_data_t* sett) {
switch ((InputTypes)obs_data_get_int(sett, D_TYPE)) {
default:
case InputTypes::Text:
obs_property_set_visible(obs_properties_get(props, D_INPUT_TEXT), true);
obs_property_set_visible(obs_properties_get(props, D_INPUT_FILE), false);
break;
case InputTypes::File:
obs_property_set_visible(obs_properties_get(props, D_INPUT_TEXT), false);
obs_property_set_visible(obs_properties_get(props, D_INPUT_FILE), true);
break;
}
return true;
}
bool gfx::effect_source::property_input_modified(void* obj, obs_properties_t*, obs_property_t*, obs_data_t* sett) {
const char* text = nullptr;
const char* file = nullptr;
switch ((InputTypes)obs_data_get_int(sett, D_TYPE)) {
default:
case InputTypes::Text:
text = obs_data_get_string(sett, D_INPUT_TEXT);
break;
case InputTypes::File:
file = obs_data_get_string(sett, D_INPUT_FILE);
break;
}
return reinterpret_cast<gfx::effect_source*>(obj)->test_for_updates(text, file);
}
gfx::effect_source::effect_source(obs_data_t* data, obs_source_t* owner) {
m_source = owner;
m_timeExisting = 0;
m_timeActive = 0;
m_quadBuffer = std::make_shared<gs::vertex_buffer>(4);
m_quadBuffer->set_uv_layers(1);
auto vtx = m_quadBuffer->at(0);
vec3_set(vtx.position, 0, 0, 0);
vec4_set(vtx.uv[0], 0, 0, 0, 0);
vtx = m_quadBuffer->at(2);
vec3_set(vtx.position, 1, 0, 0);
vec4_set(vtx.uv[0], 1, 0, 0, 0);
vtx = m_quadBuffer->at(1);
vec3_set(vtx.position, 0, 1, 0);
vec4_set(vtx.uv[0], 0, 1, 0, 0);
vtx = m_quadBuffer->at(3);
vec3_set(vtx.position, 1, 1, 0);
vec4_set(vtx.uv[0], 1, 1, 0, 0);
m_quadBuffer->update(true);
}
gfx::effect_source::~effect_source() {
m_quadBuffer = nullptr;
}
void gfx::effect_source::get_properties(obs_properties_t* properties) {
obs_property_t* p = nullptr;
p = obs_properties_add_list(properties, D_TYPE, P_TRANSLATE(T_TYPE), OBS_COMBO_TYPE_LIST, OBS_COMBO_FORMAT_INT);
obs_property_set_long_description(p, P_TRANSLATE(P_DESC(T_TYPE)));
obs_property_list_add_int(p, P_TRANSLATE(T_TYPE_TEXT), (long long)InputTypes::Text);
obs_property_list_add_int(p, P_TRANSLATE(T_TYPE_FILE), (long long)InputTypes::File);
obs_property_set_modified_callback2(p, property_type_modified, this);
p = obs_properties_add_text(properties, D_INPUT_TEXT, P_TRANSLATE(T_INPUT_TEXT), OBS_TEXT_MULTILINE);
obs_property_set_long_description(p, P_TRANSLATE(P_DESC(T_INPUT_TEXT)));
obs_property_set_modified_callback2(p, property_input_modified, this);
{
char* tmp_path = obs_module_file(m_defaultShaderPath.c_str());
p = obs_properties_add_path(properties, D_INPUT_FILE, P_TRANSLATE(T_INPUT_FILE), OBS_PATH_FILE,
"Any (*.effect *.shader *.hlsl);;Effect (*.effect);;Shader (*.shader);;DirectX (*.hlsl)", tmp_path);
obs_property_set_long_description(p, P_TRANSLATE(P_DESC(T_INPUT_FILE)));
obs_property_set_modified_callback2(p, property_input_modified, this);
bfree(tmp_path);
}
// ToDo: Place updated properties here or somewhere else?
for (auto prm : m_parameters) {
if (prm.first.second == gs::effect_parameter::type::Boolean) {
obs_properties_add_bool(properties, prm.second->ui.names[0], prm.second->ui.descs[0]);
} else if (prm.first.second >= gs::effect_parameter::type::Integer && prm.first.second <= gs::effect_parameter::type::Integer4) {
size_t cnt = (size_t)prm.first.second - (size_t)gs::effect_parameter::type::Integer;
for (size_t idx = 0; idx <= cnt; idx++) {
obs_properties_add_int(properties, prm.second->ui.names[idx], prm.second->ui.descs[idx], INT_MIN, INT_MAX, 1);
}
} else if (prm.first.second >= gs::effect_parameter::type::Float && prm.first.second <= gs::effect_parameter::type::Float4) {
size_t cnt = (size_t)prm.first.second - (size_t)gs::effect_parameter::type::Float;
for (size_t idx = 0; idx <= cnt; idx++) {
obs_properties_add_float(properties, prm.second->ui.names[idx], prm.second->ui.descs[idx], FLT_MIN, FLT_MAX, 0.01);
}
}
}
}
void gfx::effect_source::get_defaults(obs_data_t* data) {
obs_data_set_default_int(data, D_TYPE, (long long)InputTypes::Text);
obs_data_set_default_string(data, D_INPUT_TEXT, "");
obs_data_set_default_string(data, D_INPUT_FILE, "");
}
void gfx::effect_source::update(obs_data_t* data) {
obs_data_addref(data);
// Update Shader
InputTypes input_type = (InputTypes)obs_data_get_int(data, D_TYPE);
if (input_type == InputTypes::Text) {
const char* text = obs_data_get_string(data, D_INPUT_TEXT);
test_for_updates(text, nullptr);
} else if (input_type == InputTypes::File) {
const char* path = obs_data_get_string(data, D_INPUT_FILE);
test_for_updates(nullptr, path);
}
update_parameters(data);
obs_data_release(data);
}
bool gfx::effect_source::test_for_updates(const char* text, const char* path) {
bool is_shader_different = false;
if (text != nullptr) {
if (text != m_shader.text) {
m_shader.text = text;
is_shader_different = true;
}
if (is_shader_different) {
try {
m_shader.effect = std::make_unique<gs::effect>(m_shader.text, "Text");
} catch (...) {
m_shader.effect = nullptr;
}
}
} else if (path != nullptr) {
if (path != this->m_shader.path) {
this->m_shader.path = path;
this->m_shader.file_info.time_updated = 0;
this->m_shader.file_info.time_create = 0;
this->m_shader.file_info.time_modified = 0;
this->m_shader.file_info.file_size = 0;
is_shader_different = true;
}
// If the update timer is 0 or less, grab new file information.
if (m_shader.file_info.time_updated <= 0) {
struct stat stats;
if (os_stat(m_shader.path.c_str(), &stats) == 0) {
m_shader.file_info.modified = (m_shader.file_info.time_create != stats.st_ctime)
| (m_shader.file_info.time_modified != stats.st_mtime)
| (m_shader.file_info.file_size != stats.st_size);
// Mark shader as different if the file was changed.
is_shader_different =
is_shader_different
| m_shader.file_info.modified;
// Update own information
m_shader.file_info.time_create = stats.st_ctime;
m_shader.file_info.time_modified = stats.st_mtime;
m_shader.file_info.file_size = stats.st_size;
}
// Increment timer so that the next check is a reasonable timespan away.
m_shader.file_info.time_updated += 0.1f;
}
if (is_shader_different || m_shader.file_info.modified) {
// gs_effect_create_from_file caches results, which is bad for us.
std::vector<char> content;
std::ifstream fs(m_shader.path.c_str(), std::ios::binary);
if (fs.good()) {
size_t beg = fs.tellg();
fs.seekg(0, std::ios::end);
size_t sz = size_t(fs.tellg()) - beg;
content.resize(sz + 1);
fs.seekg(0, std::ios::beg);
fs.read(content.data(), sz);
fs.close();
content[sz] = '\0';
try {
m_shader.effect = std::make_unique<gs::effect>(std::string(content.data()), m_shader.path);
} catch (...) {
m_shader.effect = nullptr;
}
}
}
}
// If the shader is different, rebuild the parameter list.
if (is_shader_different) {
if (m_shader.effect) {
// ToDo: Figure out if a recycling approach would work.
// Might improve stability in low memory situations.
std::map<paramident_t, std::shared_ptr<parameter>> new_params;
auto effect_param_list = m_shader.effect->get_parameters();
for (auto effect_param : effect_param_list) {
paramident_t ident;
ident.first = effect_param.get_name();
ident.second = effect_param.get_type();
if (is_special_parameter(ident.first, ident.second))
continue;
auto entry = m_parameters.find(ident);
if (entry != m_parameters.end()) {
entry->second->param = std::make_shared<gs::effect_parameter>(effect_param);
new_params.insert_or_assign(ident, entry->second);
m_parameters.erase(entry);
} else {
std::shared_ptr<parameter> param;
if (ident.second == gs::effect_parameter::type::Boolean) {
std::shared_ptr<bool_parameter> nparam = std::make_shared<bool_parameter>();
std::string ui_name, ui_desc;
ui_name = ident.first;
ui_desc = ident.first;
nparam->ui.buffer.resize(ui_name.size() + 1 + ui_desc.size() + 1);
memset(nparam->ui.buffer.data(), 0, nparam->ui.buffer.size());
memcpy(nparam->ui.buffer.data(), ui_name.c_str(), ui_name.size());
memcpy(nparam->ui.buffer.data() + ui_name.size() + 1, ui_desc.c_str(), ui_desc.size());
nparam->ui.names.resize(1);
nparam->ui.names[0] = nparam->ui.buffer.data();
nparam->ui.descs.resize(1);
nparam->ui.descs[0] = nparam->ui.buffer.data() + ui_name.size() + 1;
param = std::dynamic_pointer_cast<parameter>(nparam);
} else if (ident.second >= gs::effect_parameter::type::Integer && ident.second <= gs::effect_parameter::type::Integer4) {
std::shared_ptr<int_parameter> nparam = std::make_shared<int_parameter>();
size_t cnt = (size_t)ident.second - (size_t)gs::effect_parameter::type::Integer;
std::string ui_name[4], ui_desc[4];
size_t bufsize = 0;
if (cnt > 0) {
for (size_t idx = 0; idx <= cnt; idx++) {
ui_name[idx] = ident.first + (char)(48 + idx);
ui_desc[idx] = ident.first + "[" + (char)(48 + idx) + "]";
bufsize += ui_name[idx].size() + 1;
bufsize += ui_desc[idx].size() + 1;
}
} else {
ui_name[0] = ident.first;
ui_desc[0] = ident.first;
bufsize += ui_name[0].size() + 1;
bufsize += ui_desc[0].size() + 1;
}
nparam->ui.names.resize(cnt + 1);
nparam->ui.descs.resize(cnt + 1);
nparam->ui.buffer.resize(bufsize);
memset(nparam->ui.buffer.data(), 0, bufsize);
size_t off = 0;
for (size_t idx = 0; idx <= cnt; idx++) {
memcpy(nparam->ui.buffer.data() + off, ui_name[idx].c_str(), ui_name[idx].size());
nparam->ui.names[idx] = nparam->ui.buffer.data() + off;
off += ui_name[idx].size() + 1;
memcpy(nparam->ui.buffer.data() + off, ui_desc[idx].c_str(), ui_desc[idx].size());
nparam->ui.descs[idx] = nparam->ui.buffer.data() + off;
off += ui_desc[idx].size() + 1;
}
param = std::dynamic_pointer_cast<parameter>(nparam);
} else if (ident.second >= gs::effect_parameter::type::Float && ident.second <= gs::effect_parameter::type::Float4) {
std::shared_ptr<float_parameter> nparam = std::make_shared<float_parameter>();
size_t cnt = (size_t)ident.second - (size_t)gs::effect_parameter::type::Float;
std::string ui_name[4], ui_desc[4];
size_t bufsize = 0;
if (cnt > 0) {
for (size_t idx = 0; idx <= cnt; idx++) {
ui_name[idx] = ident.first + (char)(48 + idx);
ui_desc[idx] = ident.first + "[" + (char)(48 + idx) + "]";
bufsize += ui_name[idx].size() + 1;
bufsize += ui_desc[idx].size() + 1;
}
} else {
ui_name[0] = ident.first;
ui_desc[0] = ident.first;
bufsize += ui_name[0].size() + 1;
bufsize += ui_desc[0].size() + 1;
}
nparam->ui.names.resize(cnt + 1);
nparam->ui.descs.resize(cnt + 1);
nparam->ui.buffer.resize(bufsize);
memset(nparam->ui.buffer.data(), 0, bufsize);
size_t off = 0;
for (size_t idx = 0; idx <= cnt; idx++) {
memcpy(nparam->ui.buffer.data() + off, ui_name[idx].c_str(), ui_name[idx].size());
nparam->ui.names[idx] = nparam->ui.buffer.data() + off;
off += ui_name[idx].size() + 1;
memcpy(nparam->ui.buffer.data() + off, ui_desc[idx].c_str(), ui_desc[idx].size());
nparam->ui.descs[idx] = nparam->ui.buffer.data() + off;
off += ui_desc[idx].size() + 1;
}
param = std::dynamic_pointer_cast<parameter>(nparam);
} else {
}
if (param) {
param->name = ident.first;
param->param = std::make_shared<gs::effect_parameter>(effect_param);
new_params.insert_or_assign(ident, param);
}
}
}
m_parameters = std::move(new_params);
} else {
m_parameters.clear();
}
}
return is_shader_different;
}
void gfx::effect_source::update_parameters(obs_data_t* data) {
for (auto prm : m_parameters) {
if (prm.first.second == gs::effect_parameter::type::Boolean) {
auto param = std::static_pointer_cast<bool_parameter>(prm.second);
param->value = obs_data_get_bool(data, prm.second->ui.names[0]);
} else if (prm.first.second >= gs::effect_parameter::type::Integer && prm.first.second <= gs::effect_parameter::type::Integer4) {
auto param = std::static_pointer_cast<int_parameter>(prm.second);
for (size_t idx = 0; idx < prm.second->ui.names.size(); idx++) {
param->value[idx] = obs_data_get_int(data, prm.second->ui.names[idx]);
}
} else if (prm.first.second >= gs::effect_parameter::type::Float && prm.first.second <= gs::effect_parameter::type::Float4) {
auto param = std::static_pointer_cast<float_parameter>(prm.second);
for (size_t idx = 0; idx < prm.second->ui.names.size(); idx++) {
param->value[idx] = obs_data_get_double(data, prm.second->ui.names[idx]);
}
}
}
}
void gfx::effect_source::apply_parameters() {
for (auto prm : m_parameters) {
if (prm.first.second == gs::effect_parameter::type::Boolean) {
auto param = std::static_pointer_cast<bool_parameter>(prm.second);
param->param->set_bool(param->value);
} else if (prm.first.second >= gs::effect_parameter::type::Integer && prm.first.second <= gs::effect_parameter::type::Integer4) {
auto param = std::static_pointer_cast<int_parameter>(prm.second);
switch (prm.first.second) {
case gs::effect_parameter::type::Integer:
param->param->set_int(param->value[0]);
break;
case gs::effect_parameter::type::Integer2:
param->param->set_int2(param->value[0], param->value[1]);
break;
case gs::effect_parameter::type::Integer3:
param->param->set_int3(param->value[0], param->value[1], param->value[2]);
break;
case gs::effect_parameter::type::Integer4:
param->param->set_int4(param->value[0], param->value[1], param->value[2], param->value[3]);
break;
}
} else if (prm.first.second >= gs::effect_parameter::type::Float && prm.first.second <= gs::effect_parameter::type::Float4) {
auto param = std::static_pointer_cast<float_parameter>(prm.second);
switch (prm.first.second) {
case gs::effect_parameter::type::Float:
param->param->set_float(param->value[0]);
break;
case gs::effect_parameter::type::Float2:
param->param->set_float2(param->value[0], param->value[1]);
break;
case gs::effect_parameter::type::Float3:
param->param->set_float3(param->value[0], param->value[1], param->value[2]);
break;
case gs::effect_parameter::type::Float4:
param->param->set_float4(param->value[0], param->value[1], param->value[2], param->value[3]);
break;
}
}
}
}
void gfx::effect_source::activate() {
m_timeActive = 0;
}
void gfx::effect_source::deactivate() {
m_timeActive = 0;
}
std::string gfx::effect_source::get_shader_file() {
return m_shader.path;
}
uint32_t gfx::effect_source::get_width() {
return 0;
}
uint32_t gfx::effect_source::get_height() {
return 0;
}
void gfx::effect_source::video_tick(float time) {
// Shader Timers
m_timeExisting += time;
m_timeActive += time;
// File Timer
m_shader.file_info.time_updated -= time;
video_tick_impl(time);
}
void gfx::effect_source::video_render(gs_effect_t* parent_effect) {
if (!m_source) {
obs_source_skip_video_filter(m_source);
return;
}
obs_source_t *parent = obs_filter_get_parent(m_source);
obs_source_t *target = obs_filter_get_target(m_source);
if (!parent || !target || !m_shader.effect) {
obs_source_skip_video_filter(m_source);
return;
}
uint32_t viewW = obs_source_get_base_width(target),
viewH = obs_source_get_base_height(target);
if (!viewW || !viewH) {
obs_source_skip_video_filter(m_source);
return;
}
apply_parameters();
if (!video_render_impl(parent_effect, viewW, viewH)) {
obs_source_skip_video_filter(m_source);
return;
}
if (m_shader.effect->has_parameter("ViewSize", gs::effect_parameter::type::Float2)) {
m_shader.effect->get_parameter("ViewSize").set_float2(float_t(viewW), float_t(viewH));
}
if (m_shader.effect->has_parameter("ViewSizeI"/*, gs::effect_parameter::type::Integer2*/)) {
m_shader.effect->get_parameter("ViewSizeI").set_int2(int32_t(viewW), int32_t(viewH));
}
if (m_shader.effect->has_parameter("Time", gs::effect_parameter::type::Float)) {
m_shader.effect->get_parameter("Time").set_float(m_timeExisting);
}
if (m_shader.effect->has_parameter("TimeActive", gs::effect_parameter::type::Float)) {
m_shader.effect->get_parameter("TimeActive").set_float(m_timeActive);
}
gs_load_indexbuffer(nullptr);
gs_load_vertexbuffer(m_quadBuffer->update());
gs_reset_blend_state();
gs_enable_depth_test(false);
gs_matrix_push();
gs_matrix_scale3f(viewW, viewH, 1);
while (gs_effect_loop(m_shader.effect->get_object(), "Draw")) {
gs_draw(gs_draw_mode::GS_TRISTRIP, 0, 4);
}
gs_matrix_pop();
gs_load_indexbuffer(nullptr);
gs_load_vertexbuffer(nullptr);
}
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