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util: Add SourceTexture utility

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This utility class is used to quickly render and retrieve a Texture from a source. It should be used in place of manual rendering since it can be updated quickly, fixing outstanding issue in all places of the plugin instead of just one.
This commit is contained in:
Michael Fabian 'Xaymar' Dirks 2018-03-05 15:17:34 +01:00
parent cc68e2864f
commit 75aeb561bd
3 changed files with 111 additions and 0 deletions
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2
CMakeLists.txt
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@ -52,6 +52,7 @@ SET(obs-stream-effects_HEADERS
"${PROJECT_SOURCE_DIR}/source/strings.h"
"${PROJECT_SOURCE_DIR}/source/util-math.h"
"${PROJECT_SOURCE_DIR}/source/util-memory.h"
"${PROJECT_SOURCE_DIR}/source/util-source-texture.h"
)
SET(obs-stream-effects_SOURCES
"${PROJECT_SOURCE_DIR}/source/plugin.cpp"
@ -72,6 +73,7 @@ SET(obs-stream-effects_SOURCES
"${PROJECT_SOURCE_DIR}/source/gs-vertexbuffer.cpp"
"${PROJECT_SOURCE_DIR}/source/util-math.cpp"
"${PROJECT_SOURCE_DIR}/source/util-memory.cpp"
"${PROJECT_SOURCE_DIR}/source/util-source-texture.cpp"
)
SET(obs-stream-effects_LOCALE
"${PROJECT_SOURCE_DIR}/data/locale/en-US.ini"

70
source/util-source-texture.cpp Normal file
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@ -0,0 +1,70 @@
// 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 "util-source-texture.h"
util::SourceTexture::~SourceTexture() {
if (m_source) {
obs_source_release(m_source);
m_source = nullptr;
}
m_rt = nullptr;
}
util::SourceTexture::SourceTexture() {
m_rt = std::make_shared<GS::RenderTarget>(GS_RGBA, GS_ZS_NONE);
}
util::SourceTexture::SourceTexture(const char* name) : SourceTexture() {
m_source = obs_get_source_by_name(name);
if (!m_source) {
throw std::invalid_argument("No such source.");
}
}
util::SourceTexture::SourceTexture(std::string name) : SourceTexture(name.c_str()) {}
util::SourceTexture::SourceTexture(obs_source_t* src) : SourceTexture() {
m_source = src;
if (!m_source) {
throw std::invalid_argument("No such source.");
}
}
std::shared_ptr<GS::Texture> util::SourceTexture::Render(size_t width, size_t height) {
if (!m_source) {
throw std::invalid_argument("Missing source to render.");
}
if ((width == 0) || (width >= 16384)) {
throw std::runtime_error("Width too large or too small.");
}
if ((height == 0) || (height >= 16384)) {
throw std::runtime_error("Height too large or too small.");
}
{
auto op = m_rt->Render((uint32_t)width, (uint32_t)height);
vec4 black; vec4_zero(&black);
gs_ortho(0, (float_t)width, 0, (float_t)height, 0, 1);
gs_clear(GS_CLEAR_COLOR, &black, 0, 0);
obs_source_video_render(m_source);
}
std::shared_ptr<GS::Texture> tex;
m_rt->GetTexture(tex);
return tex;
}

39
source/util-source-texture.h Normal file
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@ -0,0 +1,39 @@
// 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
#pragma once
#include <string>
#include <obs.h>
#include <memory>
#include "gs-texture.h"
#include "gs-rendertarget.h"
namespace util {
class SourceTexture {
obs_source_t* m_source;
std::shared_ptr<GS::RenderTarget> m_rt;
SourceTexture();
public:
~SourceTexture();
SourceTexture(const char* name);
SourceTexture(std::string name);
SourceTexture(obs_source_t* src);
std::shared_ptr<GS::Texture> Render(size_t width, size_t height);
};
}