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[mplayer/glamo.git] / libmpcodecs / vf_bmovl.c
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1 /*
2 * BitMap OVerLay video filter for MPlayer
4 * (C) 2002 Per Wigren <wigren@home.se>
6 * This file is part of MPlayer.
8 * MPlayer is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * MPlayer is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License along
19 * with MPlayer; if not, write to the Free Software Foundation, Inc.,
20 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
24 * Use MPlayer as a framebuffer to read bitmaps and commands from a FIFO
25 * and display them in the window.
27 * Commands are:
29 * RGBA32 width height xpos ypos alpha clear
30 * * Followed by width*height*4 bytes of raw RGBA32 data.
31 * ABGR32 width height xpos ypos alpha clear
32 * * Followed by width*height*4 bytes of raw ABGR32 data.
33 * RGB24 width height xpos ypos alpha clear
34 * * Followed by width*height*3 bytes of raw RGB32 data.
35 * BGR24 width height xpos ypos alpha clear
36 * * Followed by width*height*3 bytes of raw BGR32 data.
38 * ALPHA width height xpos ypos alpha
39 * * Change alpha for area
40 * CLEAR width height xpos ypos
41 * * Clear area
42 * OPAQUE
43 * * Disable all alpha transparency!
44 * Send "ALPHA 0 0 0 0 0" to enable again!
45 * HIDE
46 * * Hide bitmap
47 * SHOW
48 * * Show bitmap
50 * Arguments are:
51 * width, height Size of image/area
52 * xpos, ypos Start blitting at X/Y position
53 * alpha Set alpha difference. 0 means same as original.
54 * 255 makes everything opaque
55 * -255 makes everything transparent
56 * If you set this to -255 you can then send a sequence of
57 * ALPHA-commands to set the area to -225, -200, -175 etc
58 * for a nice fade-in-effect! ;)
59 * clear Clear the framebuffer before blitting. 1 means clear.
60 * If 0, the image will just be blitted on top of the old
61 * one, so you don't need to send 1,8MB of RGBA32 data
62 * everytime a small part of the screen is updated.
64 * Arguments for the filter are hidden:opaque:fifo
65 * For example 1:0:/tmp/myfifo.fifo will start the filter hidden, transparent
66 * and use /tmp/myfifo.fifo as the fifo.
68 * If you find bugs, please send me patches! ;)
70 * This filter was developed for use in Freevo (http://freevo.sf.net), but
71 * anyone is free to use it! ;)
75 #include <stdio.h>
76 #include <stdlib.h>
77 #include <string.h>
78 #include <unistd.h>
79 #include <errno.h>
80 #include <sys/stat.h>
81 #include <sys/types.h>
82 #include <sys/time.h>
83 #include <fcntl.h>
84 #include "config.h"
85 #include "mp_image.h"
86 #include "vf.h"
87 #include "img_format.h"
89 #include "mp_msg.h"
90 #include "libavutil/common.h"
92 #include "libvo/fastmemcpy.h"
94 #define IS_RAWIMG 0x100
95 #define IS_IMG 0x200
97 #define NONE 0x000
98 #define IMG_RGBA32 0x101
99 #define IMG_ABGR32 0x102
100 #define IMG_RGB24 0x103
101 #define IMG_BGR24 0x104
102 #define IMG_PNG 0x201
103 #define CMD_CLEAR 0x001
104 #define CMD_ALPHA 0x002
106 #define TRUE 1
107 #define FALSE 0
109 #define INRANGE(a,b,c) ( ((a) < (b)) ? (b) : ( ((a) > (c)) ? (c) : (a) ) )
111 #define rgb2y(R,G,B) ( (( 263*R + 516*G + 100*B) >> 10) + 16 )
112 #define rgb2u(R,G,B) ( ((-152*R - 298*G + 450*B) >> 10) + 128 )
113 #define rgb2v(R,G,B) ( (( 450*R - 376*G - 73*B) >> 10) + 128 )
115 #define DBG(a) (mp_msg(MSGT_VFILTER, MSGL_DBG2, "DEBUG: %d\n", a))
117 struct vf_priv_s {
118 int w, h, x1, y1, x2, y2;
119 struct {
120 unsigned char *y, *u, *v, *a, *oa;
121 } bitmap;
122 int stream_fd;
123 fd_set stream_fdset;
124 int opaque, hidden;
127 static int
128 query_format(struct vf_instance* vf, unsigned int fmt){
129 if(fmt==IMGFMT_YV12) return VFCAP_CSP_SUPPORTED;
130 return 0;
134 static int
135 config(struct vf_instance* vf,
136 int width, int height, int d_width, int d_height,
137 unsigned int flags, unsigned int outfmt)
139 vf->priv->bitmap.y = malloc( width*height );
140 vf->priv->bitmap.u = malloc( width*height/4 );
141 vf->priv->bitmap.v = malloc( width*height/4 );
142 vf->priv->bitmap.a = malloc( width*height );
143 vf->priv->bitmap.oa = malloc( width*height );
144 if(!( vf->priv->bitmap.y &&
145 vf->priv->bitmap.u &&
146 vf->priv->bitmap.v &&
147 vf->priv->bitmap.a &&
148 vf->priv->bitmap.oa )) {
149 mp_msg(MSGT_VFILTER, MSGL_ERR, "vf_bmovl: Could not allocate memory for bitmap buffer: %s\n", strerror(errno) );
150 return FALSE;
153 // Set default to black...
154 memset( vf->priv->bitmap.u, 128, width*height/4 );
155 memset( vf->priv->bitmap.v, 128, width*height/4 );
157 vf->priv->w = vf->priv->x1 = width;
158 vf->priv->h = vf->priv->y1 = height;
159 vf->priv->y2 = vf->priv->x2 = 0;
161 return vf_next_config(vf, width, height, d_width, d_height, flags, outfmt);
164 static void
165 uninit(struct vf_instance *vf)
167 if(vf->priv) {
168 free(vf->priv->bitmap.y);
169 free(vf->priv->bitmap.u);
170 free(vf->priv->bitmap.v);
171 free(vf->priv->bitmap.a);
172 free(vf->priv->bitmap.oa);
173 if (vf->priv->stream_fd >= 0)
174 close(vf->priv->stream_fd);
175 free(vf->priv);
179 static int
180 _read_cmd(int fd, char *cmd, char *args) {
181 int done=FALSE, pos=0;
182 char tmp;
184 while(!done) {
185 if(! read( fd, &tmp, 1 ) ) return FALSE;
186 if( (tmp>='A' && tmp<='Z') || (tmp>='0' && tmp<='9') )
187 cmd[pos]=tmp;
188 else if(tmp == ' ') {
189 cmd[pos]='\0';
190 done=TRUE;
192 else if(tmp == '\n') {
193 cmd[pos]='\0';
194 args[0]='\0';
195 return TRUE;
197 if(pos++>20) {
198 cmd[0]='\0';
199 return TRUE;
202 done=FALSE; pos=0;
203 while(!done) {
204 if(! read( fd, &tmp, 1 ) ) return FALSE;
205 if( (tmp >= ' ') && (pos<100) ) args[pos]=tmp;
206 else {
207 args[pos]='\0';
208 done=TRUE;
210 pos++;
212 return TRUE;
216 static int
217 put_image(struct vf_instance* vf, mp_image_t* mpi, double pts){
218 int buf_x=0, buf_y=0, buf_pos=0;
219 int have, got, want;
220 int xpos=0, ypos=0, pos=0;
221 unsigned char red=0, green=0, blue=0;
222 int alpha;
223 mp_image_t* dmpi;
225 dmpi = vf_get_image(vf->next, mpi->imgfmt, MP_IMGTYPE_TEMP,
226 MP_IMGFLAG_ACCEPT_STRIDE | MP_IMGFLAG_PREFER_ALIGNED_STRIDE,
227 mpi->w, mpi->h);
229 memcpy_pic( dmpi->planes[0], mpi->planes[0], mpi->width, mpi->height, dmpi->stride[0], mpi->stride[0] );
230 memcpy_pic( dmpi->planes[1], mpi->planes[1], mpi->chroma_width, mpi->chroma_height, dmpi->stride[1], mpi->stride[1] );
231 memcpy_pic( dmpi->planes[2], mpi->planes[2], mpi->chroma_width, mpi->chroma_height, dmpi->stride[2], mpi->stride[2] );
233 if(vf->priv->stream_fd >= 0) {
234 struct timeval tv;
235 int ready;
237 FD_SET( vf->priv->stream_fd, &vf->priv->stream_fdset );
238 tv.tv_sec=0; tv.tv_usec=0;
240 ready = select( vf->priv->stream_fd+1, &vf->priv->stream_fdset, NULL, NULL, &tv );
241 if(ready > 0) {
242 // We've got new data from the FIFO
244 char cmd[20], args[100];
245 int imgw,imgh,imgx,imgy,clear,imgalpha,pxsz=1,command;
246 unsigned char *buffer = NULL;
248 if(! _read_cmd( vf->priv->stream_fd, cmd, args) ) {
249 mp_msg(MSGT_VFILTER, MSGL_ERR, "\nvf_bmovl: Error reading commands: %s\n\n", strerror(errno));
250 return FALSE;
252 mp_msg(MSGT_VFILTER, MSGL_DBG2, "\nDEBUG: Got: %s+%s\n", cmd, args);
254 command=NONE;
255 if ( strncmp(cmd,"RGBA32",6)==0 ) { pxsz=4; command = IMG_RGBA32; }
256 else if( strncmp(cmd,"ABGR32",6)==0 ) { pxsz=4; command = IMG_ABGR32; }
257 else if( strncmp(cmd,"RGB24" ,5)==0 ) { pxsz=3; command = IMG_RGB24; }
258 else if( strncmp(cmd,"BGR24" ,5)==0 ) { pxsz=3; command = IMG_BGR24; }
259 else if( strncmp(cmd,"CLEAR" ,5)==0 ) { pxsz=1; command = CMD_CLEAR; }
260 else if( strncmp(cmd,"ALPHA" ,5)==0 ) { pxsz=1; command = CMD_ALPHA; }
261 else if( strncmp(cmd,"OPAQUE",6)==0 ) vf->priv->opaque=TRUE;
262 else if( strncmp(cmd,"SHOW", 4)==0 ) vf->priv->hidden=FALSE;
263 else if( strncmp(cmd,"HIDE", 4)==0 ) vf->priv->hidden=TRUE;
264 else if( strncmp(cmd,"FLUSH" ,5)==0 ) return vf_next_put_image(vf, dmpi, MP_NOPTS_VALUE);
265 else {
266 mp_msg(MSGT_VFILTER, MSGL_WARN, "\nvf_bmovl: Unknown command: '%s'. Ignoring.\n", cmd);
267 return vf_next_put_image(vf, dmpi, MP_NOPTS_VALUE);
270 if(command == CMD_ALPHA) {
271 sscanf( args, "%d %d %d %d %d", &imgw, &imgh, &imgx, &imgy, &imgalpha);
272 mp_msg(MSGT_VFILTER, MSGL_DBG2, "\nDEBUG: ALPHA: %d %d %d %d %d\n\n",
273 imgw, imgh, imgx, imgy, imgalpha);
274 if(imgw==0 && imgh==0) vf->priv->opaque=FALSE;
277 if(command & IS_RAWIMG) {
278 sscanf( args, "%d %d %d %d %d %d",
279 &imgw, &imgh, &imgx, &imgy, &imgalpha, &clear);
280 mp_msg(MSGT_VFILTER, MSGL_DBG2, "\nDEBUG: RAWIMG: %d %d %d %d %d %d\n\n",
281 imgw, imgh, imgx, imgy, imgalpha, clear);
283 buffer = malloc(imgw*imgh*pxsz);
284 if(!buffer) {
285 mp_msg(MSGT_VFILTER, MSGL_WARN, "\nvf_bmovl: Couldn't allocate temporary buffer! Skipping...\n\n");
286 return vf_next_put_image(vf, dmpi, MP_NOPTS_VALUE);
288 /* pipes/sockets might need multiple calls to read(): */
289 want = (imgw*imgh*pxsz);
290 have = 0;
291 while (have < want) {
292 got = read( vf->priv->stream_fd, buffer+have, want-have );
293 if (got == 0) {
294 mp_msg(MSGT_VFILTER, MSGL_WARN, "\nvf_bmovl: premature EOF...\n\n");
295 break;
297 if (got < 0) {
298 mp_msg(MSGT_VFILTER, MSGL_WARN, "\nvf_bmovl: read error: %s\n\n", strerror(errno));
299 break;
301 have += got;
303 mp_msg(MSGT_VFILTER, MSGL_DBG2, "Got %d bytes... (wanted %d)\n", have, want );
305 if(clear) {
306 memset( vf->priv->bitmap.y, 0, vf->priv->w*vf->priv->h );
307 memset( vf->priv->bitmap.u, 128, vf->priv->w*vf->priv->h/4 );
308 memset( vf->priv->bitmap.v, 128, vf->priv->w*vf->priv->h/4 );
309 memset( vf->priv->bitmap.a, 0, vf->priv->w*vf->priv->h );
310 memset( vf->priv->bitmap.oa, 0, vf->priv->w*vf->priv->h );
311 vf->priv->x1 = dmpi->width;
312 vf->priv->y1 = dmpi->height;
313 vf->priv->x2 = vf->priv->y2 = 0;
315 // Define how much of our bitmap that contains graphics!
316 vf->priv->x1 = av_clip(imgx, 0, vf->priv->x1);
317 vf->priv->y1 = av_clip(imgy, 0, vf->priv->y1);
318 vf->priv->x2 = av_clip(imgx + imgw, vf->priv->x2, vf->priv->w);
319 vf->priv->y2 = av_clip(imgy + imgh, vf->priv->y2, vf->priv->h);
322 if( command == CMD_CLEAR ) {
323 sscanf( args, "%d %d %d %d", &imgw, &imgh, &imgx, &imgy);
324 mp_msg(MSGT_VFILTER, MSGL_DBG2, "\nDEBUG: CLEAR: %d %d %d %d\n\n", imgw, imgh, imgx, imgy);
326 for( ypos=imgy ; (ypos < (imgy+imgh)) && (ypos < vf->priv->y2) ; ypos++ ) {
327 memset( vf->priv->bitmap.y + (ypos*vf->priv->w) + imgx, 0, imgw );
328 memset( vf->priv->bitmap.a + (ypos*vf->priv->w) + imgx, 0, imgw );
329 memset( vf->priv->bitmap.oa + (ypos*vf->priv->w) + imgx, 0, imgw );
330 if(ypos%2) {
331 memset( vf->priv->bitmap.u + ((ypos/2)*dmpi->stride[1]) + (imgx/2), 128, imgw/2 );
332 memset( vf->priv->bitmap.v + ((ypos/2)*dmpi->stride[2]) + (imgx/2), 128, imgw/2 );
334 } // Recalculate area that contains graphics
335 if( (imgx <= vf->priv->x1) && ( (imgw+imgx) >= vf->priv->x2) ) {
336 if( (imgy <= vf->priv->y1) && ( (imgy+imgh) >= vf->priv->y1) )
337 vf->priv->y1 = imgy+imgh;
338 if( (imgy <= vf->priv->y2) && ( (imgy+imgh) >= vf->priv->y2) )
339 vf->priv->y2 = imgy;
341 if( (imgy <= vf->priv->y1) && ( (imgy+imgh) >= vf->priv->y2) ) {
342 if( (imgx <= vf->priv->x1) && ( (imgx+imgw) >= vf->priv->x1) )
343 vf->priv->x1 = imgx+imgw;
344 if( (imgx <= vf->priv->x2) && ( (imgx+imgw) >= vf->priv->x2) )
345 vf->priv->x2 = imgx;
347 return vf_next_put_image(vf, dmpi, MP_NOPTS_VALUE);
350 for( buf_y=0 ; (buf_y < imgh) && (buf_y < (vf->priv->h-imgy)) ; buf_y++ ) {
351 for( buf_x=0 ; (buf_x < (imgw*pxsz)) && (buf_x < ((vf->priv->w+imgx)*pxsz)) ; buf_x += pxsz ) {
352 if(command & IS_RAWIMG) buf_pos = (buf_y * imgw * pxsz) + buf_x;
353 pos = ((buf_y+imgy) * vf->priv->w) + ((buf_x/pxsz)+imgx);
355 switch(command) {
356 case IMG_RGBA32:
357 red = buffer[buf_pos+0];
358 green = buffer[buf_pos+1];
359 blue = buffer[buf_pos+2];
360 alpha = buffer[buf_pos+3];
361 break;
362 case IMG_ABGR32:
363 alpha = buffer[buf_pos+0];
364 blue = buffer[buf_pos+1];
365 green = buffer[buf_pos+2];
366 red = buffer[buf_pos+3];
367 break;
368 case IMG_RGB24:
369 red = buffer[buf_pos+0];
370 green = buffer[buf_pos+1];
371 blue = buffer[buf_pos+2];
372 alpha = 0xFF;
373 break;
374 case IMG_BGR24:
375 blue = buffer[buf_pos+0];
376 green = buffer[buf_pos+1];
377 red = buffer[buf_pos+2];
378 alpha = 0xFF;
379 break;
380 case CMD_ALPHA:
381 vf->priv->bitmap.a[pos] = INRANGE((vf->priv->bitmap.oa[pos]+imgalpha),0,255);
382 break;
383 default:
384 mp_msg(MSGT_VFILTER, MSGL_ERR, "vf_bmovl: Internal error!\n");
385 return FALSE;
387 if( command & IS_RAWIMG ) {
388 vf->priv->bitmap.y[pos] = rgb2y(red,green,blue);
389 vf->priv->bitmap.oa[pos] = alpha;
390 vf->priv->bitmap.a[pos] = INRANGE((alpha+imgalpha),0,255);
391 if((buf_y%2) && ((buf_x/pxsz)%2)) {
392 pos = ( ((buf_y+imgy)/2) * dmpi->stride[1] ) + (((buf_x/pxsz)+imgx)/2);
393 vf->priv->bitmap.u[pos] = rgb2u(red,green,blue);
394 vf->priv->bitmap.v[pos] = rgb2v(red,green,blue);
397 } // for buf_x
398 } // for buf_y
399 free (buffer);
400 } else if(ready < 0) {
401 mp_msg(MSGT_VFILTER, MSGL_WARN, "\nvf_bmovl: Error %d in fifo: %s\n\n", errno, strerror(errno));
405 if(vf->priv->hidden) return vf_next_put_image(vf, dmpi, MP_NOPTS_VALUE);
407 if(vf->priv->opaque) { // Just copy buffer memory to screen
408 for( ypos=vf->priv->y1 ; ypos < vf->priv->y2 ; ypos++ ) {
409 fast_memcpy( dmpi->planes[0] + (ypos*dmpi->stride[0]) + vf->priv->x1,
410 vf->priv->bitmap.y + (ypos*vf->priv->w) + vf->priv->x1,
411 vf->priv->x2 - vf->priv->x1 );
412 if(ypos%2) {
413 fast_memcpy( dmpi->planes[1] + ((ypos/2)*dmpi->stride[1]) + (vf->priv->x1/2),
414 vf->priv->bitmap.u + (((ypos/2)*(vf->priv->w)/2)) + (vf->priv->x1/2),
415 (vf->priv->x2 - vf->priv->x1)/2 );
416 fast_memcpy( dmpi->planes[2] + ((ypos/2)*dmpi->stride[2]) + (vf->priv->x1/2),
417 vf->priv->bitmap.v + (((ypos/2)*(vf->priv->w)/2)) + (vf->priv->x1/2),
418 (vf->priv->x2 - vf->priv->x1)/2 );
421 } else { // Blit the bitmap to the videoscreen, pixel for pixel
422 for( ypos=vf->priv->y1 ; ypos < vf->priv->y2 ; ypos++ ) {
423 for ( xpos=vf->priv->x1 ; xpos < vf->priv->x2 ; xpos++ ) {
424 pos = (ypos * dmpi->stride[0]) + xpos;
426 alpha = vf->priv->bitmap.a[pos];
428 if (alpha == 0) continue; // Completly transparent pixel
430 if (alpha == 255) { // Opaque pixel
431 dmpi->planes[0][pos] = vf->priv->bitmap.y[pos];
432 if ((ypos%2) && (xpos%2)) {
433 pos = ( (ypos/2) * dmpi->stride[1] ) + (xpos/2);
434 dmpi->planes[1][pos] = vf->priv->bitmap.u[pos];
435 dmpi->planes[2][pos] = vf->priv->bitmap.v[pos];
437 } else { // Alphablended pixel
438 dmpi->planes[0][pos] =
439 ((255 - alpha) * (int)dmpi->planes[0][pos] +
440 alpha * (int)vf->priv->bitmap.y[pos]) >> 8;
442 if ((ypos%2) && (xpos%2)) {
443 pos = ( (ypos/2) * dmpi->stride[1] ) + (xpos/2);
445 dmpi->planes[1][pos] =
446 ((255 - alpha) * (int)dmpi->planes[1][pos] +
447 alpha * (int)vf->priv->bitmap.u[pos]) >> 8;
449 dmpi->planes[2][pos] =
450 ((255 - alpha) * (int)dmpi->planes[2][pos] +
451 alpha * (int)vf->priv->bitmap.v[pos]) >> 8;
454 } // for xpos
455 } // for ypos
456 } // if !opaque
457 return vf_next_put_image(vf, dmpi, MP_NOPTS_VALUE);
458 } // put_image
460 static int
461 vf_open(vf_instance_t *vf, char *args)
463 char filename[1000];
465 vf->config = config;
466 vf->put_image = put_image;
467 vf->query_format = query_format;
468 vf->uninit = uninit;
470 vf->priv = malloc(sizeof(struct vf_priv_s));
472 if(!args || sscanf(args, "%d:%d:%s", &vf->priv->hidden, &vf->priv->opaque, filename) < 3 ) {
473 mp_msg(MSGT_VFILTER, MSGL_ERR, "vf_bmovl: Bad arguments!\n");
474 mp_msg(MSGT_VFILTER, MSGL_ERR, "vf_bmovl: Arguments are 'bool hidden:bool opaque:string fifo'\n");
475 return FALSE;
478 vf->priv->stream_fd = open(filename, O_RDWR);
479 if(vf->priv->stream_fd >= 0) {
480 FD_ZERO( &vf->priv->stream_fdset );
481 mp_msg(MSGT_VFILTER, MSGL_INFO, "vf_bmovl: Opened fifo %s as FD %d\n", filename, vf->priv->stream_fd);
482 } else {
483 mp_msg(MSGT_VFILTER, MSGL_WARN, "vf_bmovl: Error! Couldn't open FIFO %s: %s\n", filename, strerror(errno));
484 vf->priv->stream_fd = -1;
487 return TRUE;
490 const vf_info_t vf_info_bmovl = {
491 "Read bitmaps from a FIFO and display them in window",
492 "bmovl",
493 "Per Wigren",
495 vf_open,
496 NULL