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https://github.com/mpv-player/mpv
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8099cbe9dd
Allows playing video with alpha information on X11, as long as the video contains alpha and the window manager does compositing. See vo.rst. Whether a window can be transparent is decided by the choice of the X Visual used for window creation. Unfortunately, there's no direct way to request such a Visual through the GLX or the X API, and use of the XRender extension is required to find out whether a Visual implies a framebuffer with alpha used by XRender (see for example [1]). Instead of depending on the XRender wrapper library (which would require annoying configure checks, even though XRender is virtually always supported), use a simple heuristics to find out whether a Visual has alpha. Since getting it wrong just means an optional feature will not work as expected, we consider this ok. [1] http://stackoverflow.com/questions/4052940/how-to-make-an-opengl- rendering-context-with-transparent-background/9215724#9215724
73 lines
2.3 KiB
C
73 lines
2.3 KiB
C
/*
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* This file is part of mpv.
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*
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* mpv 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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* mpv 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 along
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* with mpv. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef MP_GL_VIDEO_H
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#define MP_GL_VIDEO_H
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#include <stdbool.h>
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#include "sub/sub.h"
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#include "gl_common.h"
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struct lut3d {
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uint16_t *data;
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int size[3];
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};
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struct gl_video_opts {
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char *scalers[2];
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float scaler_params[2];
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int indirect;
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int gamma;
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int srgb;
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int scale_sep;
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int fancy_downscaling;
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int npot;
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int pbo;
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int dither_depth;
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int fbo_format;
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int stereo_mode;
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int enable_alpha;
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};
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extern const struct m_sub_options gl_video_conf;
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struct gl_video;
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struct gl_video *gl_video_init(GL *gl);
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void gl_video_uninit(struct gl_video *p);
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void gl_video_set_options(struct gl_video *p, struct gl_video_opts *opts);
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void gl_video_config(struct gl_video *p, int format, int w, int h, int dw, int dh);
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void gl_video_set_output_depth(struct gl_video *p, int r, int g, int b);
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void gl_video_set_lut3d(struct gl_video *p, struct lut3d *lut3d);
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void gl_video_draw_osd(struct gl_video *p, struct osd_state *osd);
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void gl_video_upload_image(struct gl_video *p, struct mp_image *img);
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void gl_video_render_frame(struct gl_video *p);
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struct mp_image *gl_video_download_image(struct gl_video *p);
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void gl_video_resize(struct gl_video *p, struct mp_rect *window,
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struct mp_rect *src, struct mp_rect *dst,
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struct mp_osd_res *osd);
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bool gl_video_get_csp_override(struct gl_video *p, struct mp_csp_details *csp);
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bool gl_video_set_csp_override(struct gl_video *p, struct mp_csp_details *csp);
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bool gl_video_set_equalizer(struct gl_video *p, const char *name, int val);
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bool gl_video_get_equalizer(struct gl_video *p, const char *name, int *val);
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void gl_video_set_debug(struct gl_video *p, bool enable);
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bool gl_video_check_format(int mp_format);
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#endif
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