mirror of
https://github.com/mpv-player/mpv
synced 2024-12-25 16:33:02 +00:00
02b199e5e9
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@17907 b3059339-0415-0410-9bf9-f77b7e298cf2
485 lines
16 KiB
C
485 lines
16 KiB
C
/* vf_bmovl.c v0.9.1 - BitMap OVerLay videofilter for MPlayer
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*
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* (C) 2002 Per Wigren <wigren@home.se>
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* Licenced under the GNU General Public License
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*
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* Use MPlayer as a framebuffer to read bitmaps and commands from a FIFO
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* and display them in the window.
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*
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* Commands are:
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*
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* RGBA32 width height xpos ypos alpha clear
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* * Followed by width*height*4 bytes of raw RGBA32 data.
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* ABGR32 width height xpos ypos alpha clear
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* * Followed by width*height*4 bytes of raw ABGR32 data.
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* RGB24 width height xpos ypos alpha clear
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* * Followed by width*height*3 bytes of raw RGB32 data.
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* BGR24 width height xpos ypos alpha clear
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* * Followed by width*height*3 bytes of raw BGR32 data.
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*
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* ALPHA width height xpos ypos alpha
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* * Change alpha for area
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* CLEAR width height xpos ypos
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* * Clear area
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* OPAQUE
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* * Disable all alpha transparency!
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* Send "ALPHA 0 0 0 0 0" to enable again!
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* HIDE
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* * Hide bitmap
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* SHOW
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* * Show bitmap
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*
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* Arguments are:
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* width, height Size of image/area
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* xpos, ypos Start blitting at X/Y position
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* alpha Set alpha difference. 0 means same as original.
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* 255 makes everything opaque
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* -255 makes everything transparent
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* If you set this to -255 you can then send a sequence of
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* ALPHA-commands to set the area to -225, -200, -175 etc
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* for a nice fade-in-effect! ;)
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* clear Clear the framebuffer before blitting. 1 means clear.
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* If 0, the image will just be blitted on top of the old
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* one, so you don't need to send 1,8MB of RGBA32 data
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* everytime a small part of the screen is updated.
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*
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* Arguments for the filter are hidden:opaque:fifo
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* For example 1:0:/tmp/myfifo.fifo will start the filter hidden, transparent
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* and use /tmp/myfifo.fifo as the fifo.
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*
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* If you find bugs, please send me patches! ;)
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*
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* This filter was developed for use in Freevo (http://freevo.sf.net), but
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* anyone is free to use it! ;)
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <errno.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <sys/time.h>
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#include <fcntl.h>
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#include "config.h"
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#include "mp_image.h"
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#include "vf.h"
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#include "img_format.h"
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#ifndef HAVE_NO_POSIX_SELECT
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#include "mp_msg.h"
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#include "libvo/fastmemcpy.h"
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#define IS_RAWIMG 0x100
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#define IS_IMG 0x200
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#define NONE 0x000
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#define IMG_RGBA32 0x101
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#define IMG_ABGR32 0x102
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#define IMG_RGB24 0x103
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#define IMG_BGR24 0x104
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#define IMG_PNG 0x201
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#define CMD_CLEAR 0x001
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#define CMD_ALPHA 0x002
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#define TRUE 1
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#define FALSE 0
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#define MAX(a,b) ((a) > (b) ? (a) : (b))
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#define MIN(a,b) ((a) < (b) ? (a) : (b))
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#define INRANGE(a,b,c) ( ((a) < (b)) ? (b) : ( ((a) > (c)) ? (c) : (a) ) )
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#define rgb2y(R,G,B) ( (( 263*R + 516*G + 100*B) >> 10) + 16 )
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#define rgb2u(R,G,B) ( ((-152*R - 298*G + 450*B) >> 10) + 128 )
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#define rgb2v(R,G,B) ( (( 450*R - 376*G - 73*B) >> 10) + 128 )
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#define DBG(a) (mp_msg(MSGT_VFILTER, MSGL_DBG2, "DEBUG: %d\n", a))
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struct vf_priv_s {
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int w, h, x1, y1, x2, y2;
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struct {
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unsigned char *y, *u, *v, *a, *oa;
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} bitmap;
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int stream_fd;
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fd_set stream_fdset;
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int opaque, hidden;
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};
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static int
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query_format(struct vf_instance_s* vf, unsigned int fmt){
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if(fmt==IMGFMT_YV12) return VFCAP_CSP_SUPPORTED;
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return 0;
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}
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static int
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config(struct vf_instance_s* vf,
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int width, int height, int d_width, int d_height,
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unsigned int flags, unsigned int outfmt)
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{
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vf->priv->bitmap.y = malloc( width*height );
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vf->priv->bitmap.u = malloc( width*height/4 );
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vf->priv->bitmap.v = malloc( width*height/4 );
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vf->priv->bitmap.a = malloc( width*height );
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vf->priv->bitmap.oa = malloc( width*height );
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if(!( vf->priv->bitmap.y &&
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vf->priv->bitmap.u &&
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vf->priv->bitmap.v &&
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vf->priv->bitmap.a &&
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vf->priv->bitmap.oa )) {
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mp_msg(MSGT_VFILTER, MSGL_ERR, "vf_bmovl: Could not allocate memory for bitmap buffer: %s\n", strerror(errno) );
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return FALSE;
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}
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// Set default to black...
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memset( vf->priv->bitmap.u, 128, width*height/4 );
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memset( vf->priv->bitmap.v, 128, width*height/4 );
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vf->priv->w = vf->priv->x1 = width;
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vf->priv->h = vf->priv->y1 = height;
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vf->priv->y2 = vf->priv->x2 = 0;
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return vf_next_config(vf, width, height, d_width, d_height, flags, outfmt);
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}
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static void
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uninit(struct vf_instance_s *vf)
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{
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if(vf->priv) {
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free(vf->priv->bitmap.y);
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free(vf->priv->bitmap.u);
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free(vf->priv->bitmap.v);
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free(vf->priv->bitmap.a);
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free(vf->priv->bitmap.oa);
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if (vf->priv->stream_fd >= 0)
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close(vf->priv->stream_fd);
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free(vf->priv);
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}
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}
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static int
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_read_cmd(int fd, char *cmd, char *args) {
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int done=FALSE, pos=0;
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char tmp;
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while(!done) {
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if(! read( fd, &tmp, 1 ) ) return FALSE;
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if( (tmp>='A' && tmp<='Z') || (tmp>='0' && tmp<='9') )
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cmd[pos]=tmp;
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else if(tmp == ' ') {
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cmd[pos]='\0';
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done=TRUE;
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}
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else if(tmp == '\n') {
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cmd[pos]='\0';
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args[0]='\0';
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return TRUE;
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}
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if(pos++>20) {
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cmd[0]='\0';
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return TRUE;
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}
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}
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done=FALSE; pos=0;
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while(!done) {
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if(! read( fd, &tmp, 1 ) ) return FALSE;
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if( (tmp >= ' ') && (pos<100) ) args[pos]=tmp;
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else {
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args[pos]='\0';
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done=TRUE;
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}
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pos++;
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}
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return TRUE;
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}
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static int
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put_image(struct vf_instance_s* vf, mp_image_t* mpi, double pts){
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int buf_x=0, buf_y=0, buf_pos=0;
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int have, got, want;
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int xpos=0, ypos=0, pos=0;
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unsigned char red=0, green=0, blue=0;
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int alpha;
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mp_image_t* dmpi;
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dmpi = vf_get_image(vf->next, mpi->imgfmt, MP_IMGTYPE_TEMP,
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MP_IMGFLAG_ACCEPT_STRIDE | MP_IMGFLAG_PREFER_ALIGNED_STRIDE,
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mpi->w, mpi->h);
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memcpy( dmpi->planes[0], mpi->planes[0], mpi->stride[0] * mpi->height);
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memcpy( dmpi->planes[1], mpi->planes[1], mpi->stride[1] * mpi->chroma_height);
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memcpy( dmpi->planes[2], mpi->planes[2], mpi->stride[2] * mpi->chroma_height);
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if(vf->priv->stream_fd >= 0) {
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struct timeval tv;
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int ready;
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FD_SET( vf->priv->stream_fd, &vf->priv->stream_fdset );
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tv.tv_sec=0; tv.tv_usec=0;
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ready = select( vf->priv->stream_fd+1, &vf->priv->stream_fdset, NULL, NULL, &tv );
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if(ready > 0) {
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// We've got new data from the FIFO
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char cmd[20], args[100];
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int imgw,imgh,imgx,imgy,clear,imgalpha,pxsz=1,command;
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unsigned char *buffer = NULL;
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if(! _read_cmd( vf->priv->stream_fd, cmd, args) ) {
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mp_msg(MSGT_VFILTER, MSGL_ERR, "\nvf_bmovl: Error reading commands: %s\n\n", strerror(errno));
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return FALSE;
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}
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mp_msg(MSGT_VFILTER, MSGL_DBG2, "\nDEBUG: Got: %s+%s\n", cmd, args);
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command=NONE;
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if ( strncmp(cmd,"RGBA32",6)==0 ) { pxsz=4; command = IMG_RGBA32; }
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else if( strncmp(cmd,"ABGR32",6)==0 ) { pxsz=4; command = IMG_ABGR32; }
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else if( strncmp(cmd,"RGB24" ,5)==0 ) { pxsz=3; command = IMG_RGB24; }
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else if( strncmp(cmd,"BGR24" ,5)==0 ) { pxsz=3; command = IMG_BGR24; }
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else if( strncmp(cmd,"CLEAR" ,5)==0 ) { pxsz=1; command = CMD_CLEAR; }
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else if( strncmp(cmd,"ALPHA" ,5)==0 ) { pxsz=1; command = CMD_ALPHA; }
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else if( strncmp(cmd,"OPAQUE",6)==0 ) vf->priv->opaque=TRUE;
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else if( strncmp(cmd,"SHOW", 4)==0 ) vf->priv->hidden=FALSE;
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else if( strncmp(cmd,"HIDE", 4)==0 ) vf->priv->hidden=TRUE;
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else if( strncmp(cmd,"FLUSH" ,5)==0 ) return vf_next_put_image(vf, dmpi, MP_NOPTS_VALUE);
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else {
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mp_msg(MSGT_VFILTER, MSGL_WARN, "\nvf_bmovl: Unknown command: '%s'. Ignoring.\n", cmd);
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return vf_next_put_image(vf, dmpi, MP_NOPTS_VALUE);
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}
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if(command == CMD_ALPHA) {
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sscanf( args, "%d %d %d %d %d", &imgw, &imgh, &imgx, &imgy, &imgalpha);
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mp_msg(MSGT_VFILTER, MSGL_DBG2, "\nDEBUG: ALPHA: %d %d %d %d %d\n\n",
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imgw, imgh, imgx, imgy, imgalpha);
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if(imgw==0 && imgh==0) vf->priv->opaque=FALSE;
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}
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if(command & IS_RAWIMG) {
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sscanf( args, "%d %d %d %d %d %d",
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&imgw, &imgh, &imgx, &imgy, &imgalpha, &clear);
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mp_msg(MSGT_VFILTER, MSGL_DBG2, "\nDEBUG: RAWIMG: %d %d %d %d %d %d\n\n",
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imgw, imgh, imgx, imgy, imgalpha, clear);
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buffer = malloc(imgw*imgh*pxsz);
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if(!buffer) {
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mp_msg(MSGT_VFILTER, MSGL_WARN, "\nvf_bmovl: Couldn't allocate temporary buffer! Skipping...\n\n");
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return vf_next_put_image(vf, dmpi, MP_NOPTS_VALUE);
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}
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/* pipes/sockets might need multiple calls to read(): */
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want = (imgw*imgh*pxsz);
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have = 0;
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while (have < want) {
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got = read( vf->priv->stream_fd, buffer+have, want-have );
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if (got == 0) {
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mp_msg(MSGT_VFILTER, MSGL_WARN, "\nvf_bmovl: premature EOF...\n\n");
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break;
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}
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if (got < 0) {
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mp_msg(MSGT_VFILTER, MSGL_WARN, "\nvf_bmovl: read error: %s\n\n", strerror(errno));
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break;
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}
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have += got;
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}
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mp_msg(MSGT_VFILTER, MSGL_DBG2, "Got %d bytes... (wanted %d)\n", have, want );
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if(clear) {
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memset( vf->priv->bitmap.y, 0, vf->priv->w*vf->priv->h );
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memset( vf->priv->bitmap.u, 128, vf->priv->w*vf->priv->h/4 );
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memset( vf->priv->bitmap.v, 128, vf->priv->w*vf->priv->h/4 );
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memset( vf->priv->bitmap.a, 0, vf->priv->w*vf->priv->h );
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memset( vf->priv->bitmap.oa, 0, vf->priv->w*vf->priv->h );
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vf->priv->x1 = dmpi->width;
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vf->priv->y1 = dmpi->height;
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vf->priv->x2 = vf->priv->y2 = 0;
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}
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// Define how much of our bitmap that contains graphics!
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vf->priv->x1 = MAX( 0, MIN(vf->priv->x1, imgx) );
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vf->priv->y1 = MAX( 0, MIN(vf->priv->y1, imgy) );
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vf->priv->x2 = MIN( vf->priv->w, MAX(vf->priv->x2, ( imgx + imgw)) );
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vf->priv->y2 = MIN( vf->priv->h, MAX(vf->priv->y2, ( imgy + imgh)) );
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}
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if( command == CMD_CLEAR ) {
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sscanf( args, "%d %d %d %d", &imgw, &imgh, &imgx, &imgy);
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mp_msg(MSGT_VFILTER, MSGL_DBG2, "\nDEBUG: CLEAR: %d %d %d %d\n\n", imgw, imgh, imgx, imgy);
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for( ypos=imgy ; (ypos < (imgy+imgh)) && (ypos < vf->priv->y2) ; ypos++ ) {
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memset( vf->priv->bitmap.y + (ypos*vf->priv->w) + imgx, 0, imgw );
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memset( vf->priv->bitmap.a + (ypos*vf->priv->w) + imgx, 0, imgw );
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memset( vf->priv->bitmap.oa + (ypos*vf->priv->w) + imgx, 0, imgw );
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if(ypos%2) {
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memset( vf->priv->bitmap.u + ((ypos/2)*dmpi->stride[1]) + (imgx/2), 128, imgw/2 );
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memset( vf->priv->bitmap.v + ((ypos/2)*dmpi->stride[2]) + (imgx/2), 128, imgw/2 );
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}
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} // Recalculate area that contains graphics
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if( (imgx <= vf->priv->x1) && ( (imgw+imgx) >= vf->priv->x2) ) {
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if( (imgy <= vf->priv->y1) && ( (imgy+imgh) >= vf->priv->y1) )
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vf->priv->y1 = imgy+imgh;
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if( (imgy <= vf->priv->y2) && ( (imgy+imgh) >= vf->priv->y2) )
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vf->priv->y2 = imgy;
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}
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if( (imgy <= vf->priv->y1) && ( (imgy+imgh) >= vf->priv->y2) ) {
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if( (imgx <= vf->priv->x1) && ( (imgx+imgw) >= vf->priv->x1) )
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vf->priv->x1 = imgx+imgw;
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if( (imgx <= vf->priv->x2) && ( (imgx+imgw) >= vf->priv->x2) )
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vf->priv->x2 = imgx;
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}
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return vf_next_put_image(vf, dmpi, MP_NOPTS_VALUE);
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}
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for( buf_y=0 ; (buf_y < imgh) && (buf_y < (vf->priv->h-imgy)) ; buf_y++ ) {
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for( buf_x=0 ; (buf_x < (imgw*pxsz)) && (buf_x < ((vf->priv->w+imgx)*pxsz)) ; buf_x += pxsz ) {
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if(command & IS_RAWIMG) buf_pos = (buf_y * imgw * pxsz) + buf_x;
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pos = ((buf_y+imgy) * vf->priv->w) + ((buf_x/pxsz)+imgx);
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switch(command) {
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case IMG_RGBA32:
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red = buffer[buf_pos+0];
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green = buffer[buf_pos+1];
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blue = buffer[buf_pos+2];
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alpha = buffer[buf_pos+3];
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break;
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case IMG_ABGR32:
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alpha = buffer[buf_pos+0];
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blue = buffer[buf_pos+1];
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green = buffer[buf_pos+2];
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red = buffer[buf_pos+3];
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break;
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case IMG_RGB24:
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red = buffer[buf_pos+0];
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green = buffer[buf_pos+1];
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blue = buffer[buf_pos+2];
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alpha = 0xFF;
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break;
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case IMG_BGR24:
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blue = buffer[buf_pos+0];
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green = buffer[buf_pos+1];
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red = buffer[buf_pos+2];
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alpha = 0xFF;
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break;
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case CMD_ALPHA:
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vf->priv->bitmap.a[pos] = INRANGE((vf->priv->bitmap.oa[pos]+imgalpha),0,255);
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break;
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default:
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mp_msg(MSGT_VFILTER, MSGL_ERR, "vf_bmovl: Internal error!\n");
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return FALSE;
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}
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if( command & IS_RAWIMG ) {
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vf->priv->bitmap.y[pos] = rgb2y(red,green,blue);
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vf->priv->bitmap.oa[pos] = alpha;
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vf->priv->bitmap.a[pos] = INRANGE((alpha+imgalpha),0,255);
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if((buf_y%2) && ((buf_x/pxsz)%2)) {
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pos = ( ((buf_y+imgy)/2) * dmpi->stride[1] ) + (((buf_x/pxsz)+imgx)/2);
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vf->priv->bitmap.u[pos] = rgb2u(red,green,blue);
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vf->priv->bitmap.v[pos] = rgb2v(red,green,blue);
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}
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}
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} // for buf_x
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} // for buf_y
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free (buffer);
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} else if(ready < 0) {
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mp_msg(MSGT_VFILTER, MSGL_WARN, "\nvf_bmovl: Error %d in fifo: %s\n\n", errno, strerror(errno));
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}
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}
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if(vf->priv->hidden) return vf_next_put_image(vf, dmpi, MP_NOPTS_VALUE);
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if(vf->priv->opaque) { // Just copy buffer memory to screen
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for( ypos=vf->priv->y1 ; ypos < vf->priv->y2 ; ypos++ ) {
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memcpy( dmpi->planes[0] + (ypos*dmpi->stride[0]) + vf->priv->x1,
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vf->priv->bitmap.y + (ypos*vf->priv->w) + vf->priv->x1,
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vf->priv->x2 - vf->priv->x1 );
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if(ypos%2) {
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memcpy( dmpi->planes[1] + ((ypos/2)*dmpi->stride[1]) + (vf->priv->x1/2),
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vf->priv->bitmap.u + (((ypos/2)*(vf->priv->w)/2)) + (vf->priv->x1/2),
|
|
(vf->priv->x2 - vf->priv->x1)/2 );
|
|
memcpy( dmpi->planes[2] + ((ypos/2)*dmpi->stride[2]) + (vf->priv->x1/2),
|
|
vf->priv->bitmap.v + (((ypos/2)*(vf->priv->w)/2)) + (vf->priv->x1/2),
|
|
(vf->priv->x2 - vf->priv->x1)/2 );
|
|
}
|
|
}
|
|
} else { // Blit the bitmap to the videoscreen, pixel for pixel
|
|
for( ypos=vf->priv->y1 ; ypos < vf->priv->y2 ; ypos++ ) {
|
|
for ( xpos=vf->priv->x1 ; xpos < vf->priv->x2 ; xpos++ ) {
|
|
pos = (ypos * dmpi->stride[0]) + xpos;
|
|
|
|
alpha = vf->priv->bitmap.a[pos];
|
|
|
|
if (alpha == 0) continue; // Completly transparent pixel
|
|
|
|
if (alpha == 255) { // Opaque pixel
|
|
dmpi->planes[0][pos] = vf->priv->bitmap.y[pos];
|
|
if ((ypos%2) && (xpos%2)) {
|
|
pos = ( (ypos/2) * dmpi->stride[1] ) + (xpos/2);
|
|
dmpi->planes[1][pos] = vf->priv->bitmap.u[pos];
|
|
dmpi->planes[2][pos] = vf->priv->bitmap.v[pos];
|
|
}
|
|
} else { // Alphablended pixel
|
|
dmpi->planes[0][pos] =
|
|
((255 - alpha) * (int)dmpi->planes[0][pos] +
|
|
alpha * (int)vf->priv->bitmap.y[pos]) >> 8;
|
|
|
|
if ((ypos%2) && (xpos%2)) {
|
|
pos = ( (ypos/2) * dmpi->stride[1] ) + (xpos/2);
|
|
|
|
dmpi->planes[1][pos] =
|
|
((255 - alpha) * (int)dmpi->planes[1][pos] +
|
|
alpha * (int)vf->priv->bitmap.u[pos]) >> 8;
|
|
|
|
dmpi->planes[2][pos] =
|
|
((255 - alpha) * (int)dmpi->planes[2][pos] +
|
|
alpha * (int)vf->priv->bitmap.v[pos]) >> 8;
|
|
}
|
|
}
|
|
} // for xpos
|
|
} // for ypos
|
|
} // if !opaque
|
|
return vf_next_put_image(vf, dmpi, MP_NOPTS_VALUE);
|
|
} // put_image
|
|
|
|
static int
|
|
vf_open(vf_instance_t* vf, char* args)
|
|
{
|
|
char filename[1000];
|
|
|
|
vf->config = config;
|
|
vf->put_image = put_image;
|
|
vf->query_format = query_format;
|
|
vf->uninit = uninit;
|
|
|
|
vf->priv = malloc(sizeof(struct vf_priv_s));
|
|
|
|
if(!args || sscanf(args, "%d:%d:%s", &vf->priv->hidden, &vf->priv->opaque, filename) < 3 ) {
|
|
mp_msg(MSGT_VFILTER, MSGL_ERR, "vf_bmovl: Bad arguments!\n");
|
|
mp_msg(MSGT_VFILTER, MSGL_ERR, "vf_bmovl: Arguments are 'bool hidden:bool opaque:string fifo'\n");
|
|
return FALSE;
|
|
}
|
|
|
|
vf->priv->stream_fd = open(filename, O_RDWR);
|
|
if(vf->priv->stream_fd >= 0) {
|
|
FD_ZERO( &vf->priv->stream_fdset );
|
|
mp_msg(MSGT_VFILTER, MSGL_INFO, "vf_bmovl: Opened fifo %s as FD %d\n", filename, vf->priv->stream_fd);
|
|
} else {
|
|
mp_msg(MSGT_VFILTER, MSGL_WARN, "vf_bmovl: Error! Couldn't open FIFO %s: %s\n", filename, strerror(errno));
|
|
vf->priv->stream_fd = -1;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
vf_info_t vf_info_bmovl = {
|
|
"Read bitmaps from a FIFO and display them in window",
|
|
"bmovl",
|
|
"Per Wigren",
|
|
"",
|
|
vf_open,
|
|
NULL
|
|
};
|
|
|
|
#endif
|