mirror of
https://github.com/xemu-project/xemu.git
synced 2024-06-02 03:58:09 -04:00
f62bfc95e3
- Store snapshot extra data in BE, per convention - Add a version field for back compat - Some minor refactoring and renaming for clarity
83 lines
2.5 KiB
C++
83 lines
2.5 KiB
C++
/*
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* xemu User Interface
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*
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* Copyright (C) 2020-2022 Matt Borgerson
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <cstdint>
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#include <fpng.h>
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#include <vector>
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#include "xemu-snapshots.h"
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#include "xui/gl-helpers.hh"
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static GLuint display_tex = 0;
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static bool display_flip = false;
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void xemu_snapshots_set_framebuffer_texture(GLuint tex, bool flip)
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{
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display_tex = tex;
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display_flip = flip;
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}
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bool xemu_snapshots_load_png_to_texture(GLuint tex, void *buf, size_t size)
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{
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std::vector<uint8_t> pixels;
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unsigned int width, height, channels;
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if (fpng::fpng_decode_memory(buf, size, pixels, width, height, channels,
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3) != fpng::FPNG_DECODE_SUCCESS) {
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return false;
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}
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glActiveTexture(GL_TEXTURE0);
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glBindTexture(GL_TEXTURE_2D, tex);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB,
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GL_UNSIGNED_BYTE, pixels.data());
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return true;
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}
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void *xemu_snapshots_create_framebuffer_thumbnail_png(size_t *size)
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{
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/*
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* Avoids crashing if a snapshot is made on a thread with no GL context
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* Normally, this is not an issue, but it is better to fail safe than assert
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* here.
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* FIXME: Allow for dispatching a thumbnail request to the UI thread to
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* remove this altogether.
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*/
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if (!SDL_GL_GetCurrentContext() || display_tex == 0) {
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return NULL;
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}
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std::vector<uint8_t> png;
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if (!RenderFramebufferToPng(display_tex, display_flip, png,
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2 * XEMU_SNAPSHOT_THUMBNAIL_WIDTH,
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2 * XEMU_SNAPSHOT_THUMBNAIL_HEIGHT)) {
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return NULL;
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}
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void *buf = g_malloc(png.size());
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memcpy(buf, png.data(), png.size());
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*size = png.size();
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return buf;
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}
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