vo_sdl.c

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/*
 *  vo_sdl.c
 *
 *  (was video_out_sdl.c from OMS project/mpeg2dec -> http://linuxvideo.org)
 *
 *  Copyright (C) Ryan C. Gordon <[e-mail]> - April 22, 2000.
 *
 *  Copyright (C) Felix Buenemann <[e-mail]> - 2001
 *
 *  (for extensive code enhancements)
 *
 *  Current maintainer for MPlayer project (report bugs to that address):
 *    Felix Buenemann <[e-mail]>
 *
 *  This file is a video out driver using the SDL library (http://libsdl.org/),
 *  to be used with MPlayer [The Movie Player for Linux] project, further info
 *  from http://www.mplayerhq.hu
 *
 *  -- old disclaimer --
 *
 *  A mpeg2dec display driver that does output through the
 *  Simple DirectMedia Layer (SDL) library. This effectively gives us all
 *  sorts of output options: X11, SVGAlib, fbcon, AAlib, GGI. Win32, MacOS
 *  and BeOS support, too. Yay. SDL info, source, and binaries can be found
 *  at http://slouken.devolution.com/SDL/
 *
 *  This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
 *	
 *  mpeg2dec 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, or (at your option)
 *  any later version.
 *   
 *  mpeg2dec 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 GNU Make; see the file COPYING.  If not, write to
 *  the Free Software Foundation.
 *
 *  -- end old disclaimer -- 
 *
 *  Changes:
 *    Dominik Schnitzer <[e-mail]> - November 08, 2000.
 *    - Added resizing support, fullscreen: changed the sdlmodes selection
 *       routine.
 *    - SDL bugfixes: removed the atexit(SLD_Quit), SDL_Quit now resides in
 *       the plugin_exit routine.
 *    - Commented the source :)
 *    - Shortcuts: for switching between Fullscreen/Windowed mode and for
 *       cycling between the different Fullscreen modes.
 *    - Small bugfixes: proper width/height of movie
 *    Dominik Schnitzer <[e-mail]> - November 11, 2000.
 *    - Cleanup code, more comments
 *    - Better error handling
 *    Bruno Barreyra <[e-mail]> - December 10, 2000.
 *    - Eliminated memcpy's for entire frames
 *    Felix Buenemann <[e-mail]> - March 11, 2001
 *    - Added aspect-ratio awareness for fullscreen
 *    Felix Buenemann <[e-mail]> - March 11, 2001
 *    - Fixed aspect-ratio awareness, did only vertical scaling (black bars above
 *       and below), now also does horizontal scaling (black bars left and right),
 *       so you get the biggest possible picture with correct aspect-ratio.
 *    Felix Buenemann <[e-mail]> - March 12, 2001
 *    - Minor bugfix to aspect-ratio for non-4:3-resolutions (like 1280x1024)
 *    - Bugfix to check_events() to reveal mouse cursor after 'q'-quit in
 *       fullscreen-mode
 *    Felix Buenemann <[e-mail]> - April 10, 2001
 *    - Changed keypress-detection from keydown to keyup, seems to fix keyrepeat
 *       bug (key had to be pressed twice to be detected)
 *    - Changed key-handling: 'f' cycles fullscreen/windowed, ESC/RETURN/'q' quits
 *    - Bugfix which avoids exit, because return is passed to sdl-output on startup,
 *       which caused the player to exit (keyboard-buffer problem? better solution
 *       recommed)
 *    Felix Buenemann <[e-mail]> - April 11, 2001
 *    - OSD and subtitle support added
 *    - some minor code-changes
 *    - added code to comply with new fullscreen meaning
 *    - changed fullscreen-mode-cycling from '+' to 'c' (interferred with audiosync
 *       adjustment)
 *    Felix Buenemann <[e-mail]> - April 13, 2001
 *    - added keymapping to toggle OSD ('o' key) 
 *    - added some defines to modify some sdl-out internas (see comments)
 *
 *    Felix Buenemann: further changes will be visible through cvs log, don't want
 *     to update this all the time (CVS info on http://mplayer.sourceforge.net)
 *
 */

/* define to force software-surface (video surface stored in system memory)*/
#undef SDL_NOHWSURFACE

/* define to enable surface locks, this might be needed on SMP machines */
#undef SDL_ENABLE_LOCKS

//#define BUGGY_SDL //defined by configure

/* MONITOR_ASPECT MUST BE FLOAT */
#define MONITOR_ASPECT 4.0/3.0

#include <mplaylib.h>
#include <mplaylib.h>
#include <mplaylib.h>
#include <inttypes.h>

#include "mp_msg.h"
#include "config.h"
#include "mp_msg.h"
#include "help_mp.h"
#include "video_out.h"
#include "video_out_internal.h"

#include "fastmemcpy.h"
#include "sub.h"
#include "aspect.h"
#include "libmpcodecs/vfcap.h"

#ifdef HAVE_X11
#include <X11/Xlib.h>
#include "x11_common.h"
#endif

#include "input/input.h"
#include "input/mouse.h"
#include "subopt-helper.h"
#include "mp_fifo.h"

static vo_info_t info = 
{
	"SDL YUV/RGB/BGR renderer (SDL v1.1.7+ only!)",
	"sdl",
	"Ryan C. Gordon <[e-mail]>, Felix Buenemann <[e-mail]>",
	""
};

LIBVO_EXTERN(sdl)

#include <SDL.h>
//#include <SDL/SDL_syswm.h>


#ifdef SDL_ENABLE_LOCKS
#define	SDL_OVR_LOCK(x)        if (SDL_LockYUVOverlay (priv->overlay)) { \
				if( mp_msg_test(MSGT_VO,MSGL_V) ) { \
 				  mp_msg(MSGT_VO,MSGL_V, "SDL: Couldn't lock YUV overlay\n"); } \
				return x; \
	    		    }
#define SDL_OVR_UNLOCK      SDL_UnlockYUVOverlay (priv->overlay);

#define SDL_SRF_LOCK(srf, x)   if(SDL_MUSTLOCK(srf)) { \
				if(SDL_LockSurface (srf)) { \
					if( mp_msg_test(MSGT_VO,MSGL_V) ) { \
 					  mp_msg(MSGT_VO,MSGL_V, "SDL: Couldn't lock RGB surface\n"); } \
					return x; \
				} \
			    }

#define SDL_SRF_UNLOCK(srf) if(SDL_MUSTLOCK(srf)) \
				SDL_UnlockSurface (srf);
#else
#define SDL_OVR_LOCK(x)
#define SDL_OVR_UNLOCK
#define SDL_SRF_LOCK(srf, x)
#define SDL_SRF_UNLOCK(srf)
#endif

/** Private SDL Data structure **/

static struct sdl_priv_s {

	/* output driver used by sdl */
	char driver[8];
	
	/* SDL display surface */
	SDL_Surface *surface;
	
	/* SDL RGB surface */
	SDL_Surface *rgbsurface;
	
	/* SDL YUV overlay */
	SDL_Overlay *overlay;

	/* available fullscreen modes */
	SDL_Rect **fullmodes;

	/* surface attributes for fullscreen and windowed mode */
	Uint32 sdlflags, sdlfullflags;

	/* save the windowed output extents */
	SDL_Rect windowsize;
	
	/* Bits per Pixel */
	Uint8 bpp;

	/* RGB or YUV? */
	Uint8 mode;
	#define YUV 0
	#define RGB 1
	#define BGR 2

	/* use direct blitting to surface */
	int dblit;

	/* current fullscreen mode, 0 = highest available fullscreen mode */
	int fullmode;

	/* YUV ints */
	int framePlaneY, framePlaneUV, framePlaneYUY;
	int stridePlaneY, stridePlaneUV, stridePlaneYUY;
	
	/* RGB ints */
	int framePlaneRGB;
	int stridePlaneRGB;

	/* Flip image */
	int flip;

	/* fullscreen behaviour; see init */
	int fulltype;

	/* is X running (0/1) */
	int X;

	/* X11 Resolution */
	int XWidth, XHeight;
	
        /* original image dimensions */
	int width, height;

	/* destination dimensions */
	int dstwidth, dstheight;

    /* Draw image at coordinate y on the SDL surfaces */
    int y;

    /* The image is displayed between those y coordinates in priv->surface */
    int y_screen_top, y_screen_bottom;

    /* 1 if the OSD has changed otherwise 0 */
    int osd_has_changed;
    
	/* source image format (YUV/RGB/...) */
    uint32_t format;

    /* dirty_off_frame[0] contains a bounding box around the osd contents drawn above the image
       dirty_off_frame[1] is the corresponding thing for OSD contents drawn below the image
    */
    SDL_Rect dirty_off_frame[2];
} sdl_priv;

static void erase_area_4(int x_start, int width, int height, int pitch, uint32_t color, uint8_t* pixels);
static void erase_area_1(int x_start, int width, int height, int pitch, uint8_t color, uint8_t* pixels);
static int setup_surfaces(void);
static void set_video_mode(int width, int height, int bpp, uint32_t sdlflags);
static void erase_rectangle(int x, int y, int w, int h);

/* Expand 'rect' to contain the rectangle specified by x, y, w and h */
static void expand_rect(SDL_Rect* rect, int x, int y, int w, int h)
{
    if(rect->x < 0 || rect->y < 0) {
        rect->x = x;
        rect->y = y;
        rect->w = w;
        rect->h = h;
        return;
    }
    
    if(rect->x > x)
        rect->x = x;

    if(rect->y > y)
        rect->y = y;

    if(rect->x + rect->w < x + w)
        rect->w = x + w - rect->x;

    if(rect->y + rect->h < y + h)
        rect->h = y + h - rect->y;
}

/** libvo Plugin functions **/

/**
 * draw_alpha is used for osd and subtitle display.
 *
 **/

static void draw_alpha(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride){
	struct sdl_priv_s *priv = &sdl_priv;
	
    if(priv->osd_has_changed) {
        /* OSD did change. Store a bounding box of everything drawn into the OSD */
        if(priv->y >= y0) {
            /* Make sure we don't mark part of the frame area dirty */
            if(h + y0 > priv->y) 
                expand_rect(&priv->dirty_off_frame[0], x0, y0, w, priv->y - y0);
            else
                expand_rect(&priv->dirty_off_frame[0], x0, y0, w, h);
        }
        else if(priv->y + priv->height <= y0 + h) {
            /* Make sure we don't mark part of the frame area dirty */
            if(y0 < priv->y + priv->height) 
                expand_rect(&priv->dirty_off_frame[1], x0,
                            priv->y + priv->height,
                            w, h - ((priv->y + priv->height) - y0));
            else
                expand_rect(&priv->dirty_off_frame[1], x0, y0, w, h);
        }
    }
    else { /* OSD contents didn't change only draw parts that was erased by the frame */
        if(priv->y >= y0) {
           src = src + (priv->y - y0) * stride;
           srca = srca + (priv->y - y0) * stride;
           h -= priv->y - y0;
           y0 = priv->y;
        }

        if(priv->y + priv->height <= y0 + h)
            h = priv->y + priv->height - y0;

        if(h <= 0)
            return;
    }

	switch(priv->format) {
		case IMGFMT_YV12:  
		case IMGFMT_I420:
        	case IMGFMT_IYUV:
            vo_draw_alpha_yv12(w,h,src,srca,stride,((uint8_t *) *(priv->overlay->pixels))+priv->overlay->pitches[0]*y0+x0,priv->overlay->pitches[0]);
		break;
		case IMGFMT_YUY2:
        	case IMGFMT_YVYU:
                x0 *= 2;
    			vo_draw_alpha_yuy2(w,h,src,srca,stride,((uint8_t *) *(priv->overlay->pixels))+priv->overlay->pitches[0]*y0+x0,priv->overlay->pitches[0]);
		break;	
        	case IMGFMT_UYVY:
                x0 *= 2;
    			vo_draw_alpha_yuy2(w,h,src,srca,stride,((uint8_t *) *(priv->overlay->pixels))+priv->overlay->pitches[0]*y0+x0,priv->overlay->pitches[0]);
		break;

		default:
        if(priv->dblit) {
            x0 *= priv->surface->format->BytesPerPixel;
		switch(priv->format) {
		case IMGFMT_RGB15:
		case IMGFMT_BGR15:
    			vo_draw_alpha_rgb15(w,h,src,srca,stride,((uint8_t *) priv->surface->pixels)+y0*priv->surface->pitch+x0,priv->surface->pitch);
		break;
		case IMGFMT_RGB16:
		case IMGFMT_BGR16:
    			vo_draw_alpha_rgb16(w,h,src,srca,stride,((uint8_t *) priv->surface->pixels)+y0*priv->surface->pitch+x0,priv->surface->pitch);
		break;
		case IMGFMT_RGB24:
		case IMGFMT_BGR24:
    			vo_draw_alpha_rgb24(w,h,src,srca,stride,((uint8_t *) priv->surface->pixels)+y0*priv->surface->pitch+x0,priv->surface->pitch);
		break;
		case IMGFMT_RGB32:
		case IMGFMT_BGR32:
    			vo_draw_alpha_rgb32(w,h,src,srca,stride,((uint8_t *) priv->surface->pixels)+y0*priv->surface->pitch+x0,priv->surface->pitch);
		break;
		}
        }
		else {
            x0 *= priv->rgbsurface->format->BytesPerPixel;
		switch(priv->format) {
		case IMGFMT_RGB15:
		case IMGFMT_BGR15:
    			vo_draw_alpha_rgb15(w,h,src,srca,stride,((uint8_t *) priv->rgbsurface->pixels)+y0*priv->rgbsurface->pitch+x0,priv->rgbsurface->pitch);
		break;
		case IMGFMT_RGB16:
		case IMGFMT_BGR16:
    			vo_draw_alpha_rgb16(w,h,src,srca,stride,((uint8_t *) priv->rgbsurface->pixels)+y0*priv->rgbsurface->pitch+x0,priv->rgbsurface->pitch);
		break;
		case IMGFMT_RGB24:
		case IMGFMT_BGR24:
    			vo_draw_alpha_rgb24(w,h,src,srca,stride,((uint8_t *) priv->rgbsurface->pixels)+y0*priv->rgbsurface->pitch+x0,priv->rgbsurface->pitch);
		break;
		case IMGFMT_RGB32:
		case IMGFMT_BGR32:
    			vo_draw_alpha_rgb32(w,h,src,srca,stride,((uint8_t *) priv->rgbsurface->pixels)+y0*priv->rgbsurface->pitch+x0,priv->rgbsurface->pitch);
		break;
		}
        }
        
  	}	
}


/**
 * Take a null-terminated array of pointers, and find the last element.
 *
 *    params : array == array of which we want to find the last element.
 *   returns : index of last NON-NULL element.
 **/

static inline int findArrayEnd (SDL_Rect **array)
{
	int i = 0;
	while ( array[i++] );	/* keep loopin' ... */
	
	/* return the index of the last array element */
	return i - 1;
}


/**
 * Open and prepare SDL output.
 *
 *    params : *plugin ==
 *             *name == 
 *   returns : 0 on success, -1 on failure
 **/
  
static int sdl_open (void *plugin, void *name)
{
	struct sdl_priv_s *priv = &sdl_priv;
	const SDL_VideoInfo *vidInfo = NULL;
	/*static int opened = 0;
	
	if (opened)
	    return 0;
	opened = 1;*/


	/* other default values */
	#ifdef SDL_NOHWSURFACE
		if( mp_msg_test(MSGT_VO,MSGL_V) ) {
			mp_msg(MSGT_VO,MSGL_V, "SDL: using software-surface\n"); }
		priv->sdlflags = SDL_SWSURFACE|SDL_RESIZABLE|SDL_ANYFORMAT;
		priv->sdlfullflags = SDL_SWSURFACE|SDL_FULLSCREEN|SDL_ANYFORMAT;
		// XXX:FIXME: ASYNCBLIT should be enabled for SMP systems
	#else