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/*
* This file is part of bino, a 3D video player.
*
* Copyright (C) 2010, 2011, 2012, 2015, 2016
* Martin Lambers <marlam@marlam.de>
* Frédéric Devernay <Frederic.Devernay@inrialpes.fr>
* Joe <cuchac@email.cz>
* Binocle <http://binocle.com> (author: Olivier Letz <oletz@binocle.com>)
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef VIDEO_OUTPUT_H
#define VIDEO_OUTPUT_H
#include <vector>
#include <string>
#include <GL/glew.h>
#include "base/blb.h"
#include "media_data.h"
#include "subtitle_renderer.h"
#include "dispatch.h"
class subtitle_updater;
#if HAVE_LIBXNVCTRL
class CNvSDIout;
#endif // HAVE_LIBXNVCTRL
class video_output : public controller
{
private:
bool _initialized;
/* We manage two frames, each with its own set of properties etc.
* The active frame is the one that is displayed, the other frame is the one
* that is prepared for display.
* Each frame contains a left view and may contain a right view. */
int _active_index; // 0 or 1
video_frame _frame[2]; // input frames (active / preparing)
// Step 1: input of video data
video_frame _input_last_frame; // last frame for this step
GLuint _input_pbo; // pixel-buffer object for texture uploading
GLuint _input_fbo; // frame-buffer object for texture clearing
GLuint _input_yuv_y_tex[2]; // for yuv formats: y component
GLuint _input_yuv_u_tex[2]; // for yuv formats: u component
GLuint _input_yuv_v_tex[2]; // for yuv formats: v component
GLuint _input_bgra32_tex[2]; // for bgra32 format
int _input_yuv_chroma_width_divisor; // for yuv formats: chroma subsampling
int _input_yuv_chroma_height_divisor; // for yuv formats: chroma subsampling
subtitle_box _subtitle[2]; // the current subtitle box
GLuint _subtitle_tex[2]; // subtitle texture
bool _subtitle_tex_current[2]; // whether the subtitle tex contains the current subtitle buffer
// Step 2: color space conversion and color correction
parameters _color_last_params[2]; // last params for this step; used for reinitialization check
video_frame _color_last_frame[2]; // last frame for this step; used for reinitialization check
GLuint _color_prg[2]; // color space transformation, color adjustment
GLuint _color_fbo; // framebuffer object to render into the sRGB texture
GLuint _color_tex[2][2]; // output: SRGB8 or linear RGB16 texture
// Step 3: rendering
parameters _render_params; // current parameters for display
parameters _render_last_params; // last params for this step; used for reinitialization check
video_frame _render_last_frame; // last frame for this step; used for reinitialization check
GLuint _render_prg; // reads sRGB texture, renders according to _params[_active_index]
GLuint _render_dummy_tex; // an empty subtitle texture
GLuint _render_mask_tex; // for the masking modes even-odd-{rows,columns}, checkerboard
blob _3d_ready_sync_buf; // for 3-D Ready Sync pixels
// OpenGL viewports and tex coordinates for drawing the two views of the video frame
GLint _full_viewport[4];
GLint _viewport[2][4];
float _tex_coords[2][4][2];
subtitle_updater *_subtitle_updater; // the subtitle updater thread
#if HAVE_LIBXNVCTRL
CNvSDIout *_nv_sdi_output; // access the nvidia quadro sdi output card
int64_t _last_nv_sdi_displayed_frameno;
#endif // HAVE_LIBXNVCTRL
// GL Helper functions
bool xglCheckError(const std::string& where = std::string()) const;
bool xglCheckFBO(const std::string& where = std::string()) const;
GLuint xglCompileShader(const std::string& name, GLenum type, const std::string& src) const;
GLuint xglCreateProgram(GLuint vshader, GLuint fshader) const;
GLuint xglCreateProgram(const std::string& name,
const std::string& vshader_src, const std::string& fshader_src) const;
void xglLinkProgram(const std::string& name, const GLuint prg) const;
void xglDeleteProgram(GLuint prg) const;
bool srgb8_textures_are_color_renderable();
void draw_quad(float x, float y, float w, float h,
const float tex_coords[2][4][2] = NULL,
const float more_tex_coords[4][2] = NULL) const;
// Step 1: initialize/deinitialize, and check if reinitialization is necessary
void input_init(const video_frame &frame);
void input_deinit();
bool input_is_compatible(const video_frame ¤t_frame);
void subtitle_init(int index);
void subtitle_deinit(int index);
// Step 2: initialize/deinitialize, and check if reinitialization is necessary
void color_init(int index, const parameters& params, const video_frame &frame);
void color_deinit(int index);
bool color_is_compatible(int index, const parameters& params, const video_frame ¤t_frame);
// Step 3: initialize/deinitialize, and check if reinitialization is necessary
void render_init();
void render_deinit();
bool render_needs_subtitle(const parameters& params);
bool render_needs_coloradjust(const parameters& params);
bool render_needs_ghostbust(const parameters& params);
bool render_is_compatible();
protected:
subtitle_renderer _subtitle_renderer;
#ifdef GLEW_MX
virtual GLEWContext* glewGetContext() const = 0;
#endif
// Get the total viewport size.
int full_display_width() const;
int full_display_height() const;
// Get size of the viewport area that is used for video. This is overridable for Equalizer.
virtual int video_display_width() const;
virtual int video_display_height() const;
virtual bool context_is_stereo() const = 0; // Is our current OpenGL context a stereo context?
virtual void recreate_context(bool stereo) = 0; // Recreate an OpenGL context and make it current
virtual void trigger_resize(int w, int h) = 0; // Trigger a resize the video area
void clear() const; // Clear the video area
void reshape(int w, int h, const parameters& params = dispatch::parameters()); // Call this when the video area was resized
/* Get screen properties (fixed) */
virtual int screen_width() const = 0; // in pixels
virtual int screen_height() const = 0; // in pixels
virtual float screen_pixel_aspect_ratio() const = 0;// the aspect ratio of a pixel on screen
/* Get current video area properties */
virtual int width() const = 0; // in pixels
virtual int height() const = 0; // in pixels
virtual int pos_x() const = 0; // in pixels
virtual int pos_y() const = 0; // in pixels
/* Display the current frame.
* The first version is used by Equalizer, which needs to set some special properties.
* The second version is used by NVIDIA SDI output.
* The third version is for everyone else.
* TODO: This function needs to handle interlaced frames! */
void display_current_frame(int64_t display_frameno, bool keep_viewport, bool mono_right_instead_of_left,
float x, float y, float w, float h,
const GLint viewport[2][4], const float tex_coords[2][4][2],
int dst_width, int dst_height,
parameters::stereo_mode_t stereo_mode);
void display_current_frame(int64_t display_frameno, int dst_width, int dst_height, parameters::stereo_mode_t stereo_mode)
{
display_current_frame(display_frameno, false, false, -1.0f, -1.0f, 2.0f, 2.0f,
_viewport, _tex_coords, dst_width, dst_height, stereo_mode);
}
void display_current_frame(int64_t display_frameno = 0)
{
display_current_frame(display_frameno, false, false, -1.0f, -1.0f, 2.0f, 2.0f,
_viewport, _tex_coords, full_display_width(), full_display_height(),
dispatch::parameters().stereo_mode());
}
#if HAVE_LIBXNVCTRL
void sdi_output(int64_t display_frameno = 0);
#endif // HAVE_LIBXNVCTRL
public:
/* Constructor, Destructor */
video_output();
virtual ~video_output();
/* Initialize the video output, or throw an exception */
virtual void init();
/* Wait for subtitle renderer initialization to finish. Has to be called
* if the video has subtitles. Returns the number of microseconds that the
* waiting took. */
virtual int64_t wait_for_subtitle_renderer() = 0;
/* Deinitialize the video output */
virtual void deinit();
/* Set a video area size suitable for the given input/output settings */
void set_suitable_size(int w, int h, float ar, parameters::stereo_mode_t stereo_mode);
/* Get capabilities */
virtual bool supports_stereo() const = 0; // Is OpenGL quad buffered stereo available?
/* Center video area on screen */
virtual void center() = 0;
/* Enter/exit fullscreen mode */
virtual void enter_fullscreen() = 0;
virtual void exit_fullscreen() = 0;
/* Process window system events (if applicable) */
virtual void process_events() = 0;
/* Prepare a new frame for display. */
virtual void prepare_next_frame(const video_frame &frame, const subtitle_box &subtitle);
/* Switch to the next frame (make it the current one) */
virtual void activate_next_frame();
/* Get an estimation of when the next frame will appear on screen */
virtual int64_t time_to_next_frame_presentation() const;
};
#endif
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