mirror of
https://github.com/mpv-player/mpv
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5827d9cc09
This has been completely broken since commit 93546f0c. But even before,
rotation handling did not make too much sense. In particular, it rotated
the contents of the cropped image, instead of adjusting the crop
rectangle as well. The result was that things like panscan or zooming
did not behave as expected with rotation applied.
The same is true for vertical flipping. Flipping is triggered by
negative image stride. OpenGL does not support flipping the image on
upload, so it's done as part of the rendering. It can be triggered with
--vf=flip, but other filters and even decoders could setup negative
stride to flip the image.
Fix these issues by applying transforms to texture coordinates properly,
and by making rotation and flipping part of these transforms.
This still doesn't work properly for separated scaling. The issue is
that we'd have to adjust how the passes are done. For now, pick a very
stupid solution by rotating the image to a FBO, and then scaling from
that. This has the avantage that the scale logic doesn't have to be
complicated for such a rare case. It could be improved later.
Prescaling is apparently still broken. I don't know if chroma
positioning works properly either. None of this should affect the case
with no rotation.
162 lines
4.6 KiB
C
162 lines
4.6 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
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (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 Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along 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 "options/m_option.h"
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#include "sub/osd.h"
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#include "common.h"
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#include "utils.h"
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#include "video/out/filter_kernels.h"
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// Texture units 0-5 are used by the video, and for free use by the passes
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#define TEXUNIT_VIDEO_NUM 6
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// Other texture units are reserved for specific purposes
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#define TEXUNIT_SCALERS TEXUNIT_VIDEO_NUM
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#define TEXUNIT_3DLUT (TEXUNIT_SCALERS+SCALER_COUNT)
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#define TEXUNIT_DITHER (TEXUNIT_3DLUT+1)
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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 scaler_fun {
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char *name;
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float params[2];
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float blur;
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};
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struct scaler_config {
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struct scaler_fun kernel;
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struct scaler_fun window;
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float radius;
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float antiring;
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int clamp;
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};
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struct scaler {
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int index;
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struct scaler_config conf;
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double scale_factor;
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bool initialized;
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struct filter_kernel *kernel;
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GLuint gl_lut;
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GLenum gl_target;
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struct fbotex sep_fbo;
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struct fbotex sep_rot_fbo;
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bool insufficient;
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int lut_size;
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// kernel points here
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struct filter_kernel kernel_storage;
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};
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enum scaler_unit {
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SCALER_SCALE, // luma/video
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SCALER_DSCALE, // luma-video downscaling
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SCALER_CSCALE, // chroma upscaling
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SCALER_TSCALE, // temporal scaling (interpolation)
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SCALER_COUNT
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};
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struct gl_video_opts {
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int dumb_mode;
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struct scaler_config scaler[4];
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int scaler_lut_size;
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float gamma;
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int gamma_auto;
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int target_prim;
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int target_trc;
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int linear_scaling;
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int correct_downscaling;
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int sigmoid_upscaling;
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float sigmoid_center;
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float sigmoid_slope;
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int scaler_resizes_only;
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int pbo;
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int dither_depth;
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int dither_algo;
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int dither_size;
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int temporal_dither;
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int temporal_dither_period;
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int fbo_format;
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int alpha_mode;
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int use_rectangle;
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struct m_color background;
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int interpolation;
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float interpolation_threshold;
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int blend_subs;
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char *scale_shader;
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char **pre_shaders;
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char **post_shaders;
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int deband;
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struct deband_opts *deband_opts;
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float unsharp;
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int prescale_luma;
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int prescale_passes;
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float prescale_downscaling_threshold;
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struct superxbr_opts *superxbr_opts;
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struct nnedi3_opts *nnedi3_opts;
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};
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extern const struct m_sub_options gl_video_conf;
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extern const struct gl_video_opts gl_video_opts_hq_def;
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extern const struct gl_video_opts gl_video_opts_def;
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struct gl_video;
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struct vo_frame;
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struct gl_video *gl_video_init(GL *gl, struct mp_log *log, struct mpv_global *g);
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void gl_video_uninit(struct gl_video *p);
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void gl_video_set_osd_source(struct gl_video *p, struct osd_state *osd);
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void gl_video_set_options(struct gl_video *p, struct gl_video_opts *opts);
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bool gl_video_check_format(struct gl_video *p, int mp_format);
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void gl_video_config(struct gl_video *p, struct mp_image_params *params);
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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_render_frame(struct gl_video *p, struct vo_frame *frame, int fbo);
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void gl_video_resize(struct gl_video *p, int vp_w, int vp_h,
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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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struct mp_csp_equalizer;
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struct mp_csp_equalizer *gl_video_eq_ptr(struct gl_video *p);
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void gl_video_eq_update(struct gl_video *p);
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void gl_video_set_debug(struct gl_video *p, bool enable);
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float gl_video_scale_ambient_lux(float lmin, float lmax,
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float rmin, float rmax, float lux);
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void gl_video_set_ambient_lux(struct gl_video *p, int lux);
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void gl_video_set_gl_state(struct gl_video *p);
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void gl_video_unset_gl_state(struct gl_video *p);
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void gl_video_reset(struct gl_video *p);
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bool gl_video_showing_interpolated_frame(struct gl_video *p);
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struct gl_hwdec;
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void gl_video_set_hwdec(struct gl_video *p, struct gl_hwdec *hwdec);
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struct vo;
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void gl_video_configure_queue(struct gl_video *p, struct vo *vo);
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#endif
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