summaryrefslogtreecommitdiffstats
path: root/video/out/vo.c
blob: 2db6afa05a491b83e3260e54d22c5f36b7cebcbf (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
/*
 * libvo common functions, variables used by many/all drivers.
 *
 * This file is part of MPlayer.
 *
 * MPlayer 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 of the License, or
 * (at your option) any later version.
 *
 * MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <stdbool.h>

#include <unistd.h>

#include <libavutil/common.h>

#include "talloc.h"

#include "config.h"
#include "osdep/timer.h"
#include "core/options.h"
#include "core/bstr.h"
#include "vo.h"
#include "aspect.h"
#include "core/input/input.h"
#include "core/m_config.h"
#include "core/mp_msg.h"
#include "video/mp_image.h"
#include "video/vfcap.h"
#include "sub/sub.h"

//
// Externally visible list of all vo drivers
//
extern struct vo_driver video_out_x11;
extern struct vo_driver video_out_vdpau;
extern struct vo_driver video_out_xv;
extern struct vo_driver video_out_opengl;
extern struct vo_driver video_out_opengl_hq;
extern struct vo_driver video_out_opengl_old;
extern struct vo_driver video_out_null;
extern struct vo_driver video_out_image;
extern struct vo_driver video_out_lavc;
extern struct vo_driver video_out_caca;
extern struct vo_driver video_out_direct3d;
extern struct vo_driver video_out_direct3d_shaders;
extern struct vo_driver video_out_sdl;
extern struct vo_driver video_out_corevideo;

const struct vo_driver *video_out_drivers[] =
{
#if CONFIG_VDPAU
        &video_out_vdpau,
#endif
#ifdef CONFIG_GL
        &video_out_opengl,
#endif
#ifdef CONFIG_DIRECT3D
        &video_out_direct3d_shaders,
        &video_out_direct3d,
#endif
#ifdef CONFIG_COREVIDEO
        &video_out_corevideo,
#endif
#ifdef CONFIG_XV
        &video_out_xv,
#endif
#ifdef CONFIG_SDL2
        &video_out_sdl,
#endif
#ifdef CONFIG_GL
        &video_out_opengl_old,
#endif
#ifdef CONFIG_X11
        &video_out_x11,
#endif
        &video_out_null,
        // should not be auto-selected
        &video_out_image,
#ifdef CONFIG_CACA
        &video_out_caca,
#endif
#ifdef CONFIG_ENCODING
        &video_out_lavc,
#endif
#ifdef CONFIG_GL
        &video_out_opengl_hq,
#endif
        NULL
};

static bool get_desc(struct m_obj_desc *dst, int index)
{
    if (index >= MP_ARRAY_SIZE(video_out_drivers) - 1)
        return false;
    const struct vo_driver *vo = video_out_drivers[index];
    *dst = (struct m_obj_desc) {
        .name = vo->info->short_name,
        .description = vo->info->name,
        .priv_size = vo->priv_size,
        .priv_defaults = vo->priv_defaults,
        .options = vo->options,
        .init_options = vo->init_option_string,
        .hidden = vo->encode,
        .p = vo,
    };
    return true;
}

// For the vo option
const struct m_obj_list vo_obj_list = {
    .get_desc = get_desc,
    .description = "video outputs",
    .aliases = {
        {"gl",        "opengl"},
        {"gl3",       "opengl-hq"},
        {0}
    },
    .allow_unknown_entries = true,
    .allow_trailer = true,
};

static struct vo *vo_create(struct mp_vo_opts *opts,
                            struct input_ctx *input_ctx,
                            struct encode_lavc_context *encode_lavc_ctx,
                            char *name, char **args)
{
    struct m_obj_desc desc;
    if (!m_obj_list_find(&desc, &vo_obj_list, bstr0(name))) {
        mp_tmsg(MSGT_CPLAYER, MSGL_ERR, "Video output %s not found!\n", name);
        return NULL;
    };
    struct vo *vo = talloc_ptrtype(NULL, vo);
    *vo = (struct vo) {
        .driver = desc.p,
        .opts = opts,
        .encode_lavc_ctx = encode_lavc_ctx,
        .input_ctx = input_ctx,
        .event_fd = -1,
        .registered_fd = -1,
        .aspdat = { .monitor_par = 1 },
    };
    if (vo->driver->encode != !!vo->encode_lavc_ctx)
        goto error;
    struct m_config *config = m_config_from_obj_desc(vo, &desc);
    if (m_config_set_obj_params(config, args) < 0)
        goto error;
    vo->priv = config->optstruct;
    if (vo->driver->preinit(vo))
        goto error;
    return vo;
error:
    talloc_free(vo);
    return NULL;
}

int vo_control(struct vo *vo, uint32_t request, void *data)
{
    return vo->driver->control(vo, request, data);
}

void vo_queue_image(struct vo *vo, struct mp_image *mpi)
{
    if (!vo->config_ok)
        return;
    if (vo->driver->buffer_frames) {
        vo->driver->draw_image(vo, mpi);
        return;
    }
    vo->frame_loaded = true;
    vo->next_pts = mpi->pts;
    assert(!vo->waiting_mpi);
    vo->waiting_mpi = mp_image_new_ref(mpi);
}

int vo_redraw_frame(struct vo *vo)
{
    if (!vo->config_ok || !vo->hasframe)
        return -1;
    if (vo_control(vo, VOCTRL_REDRAW_FRAME, NULL) == true) {
        vo->want_redraw = false;
        vo->redrawing = true;
        return 0;
    }
    return -1;
}

bool vo_get_want_redraw(struct vo *vo)
{
    if (!vo->config_ok || !vo->hasframe)
        return false;
    return vo->want_redraw;
}

int vo_get_buffered_frame(struct vo *vo, bool eof)
{
    if (!vo->config_ok)
        return -1;
    if (vo->frame_loaded)
        return 0;
    if (!vo->driver->buffer_frames)
        return -1;
    vo->driver->get_buffered_frame(vo, eof);
    return vo->frame_loaded ? 0 : -1;
}

void vo_skip_frame(struct vo *vo)
{
    vo_control(vo, VOCTRL_SKIPFRAME, NULL);
    vo->frame_loaded = false;
    mp_image_unrefp(&vo->waiting_mpi);
}

void vo_new_frame_imminent(struct vo *vo)
{
    if (vo->driver->buffer_frames)
        vo_control(vo, VOCTRL_NEWFRAME, NULL);
    else {
        assert(vo->frame_loaded);
        assert(vo->waiting_mpi);
        assert(vo->waiting_mpi->pts == vo->next_pts);
        vo->driver->draw_image(vo, vo->waiting_mpi);
        mp_image_unrefp(&vo->waiting_mpi);
    }
}

void vo_draw_osd(struct vo *vo, struct osd_state *osd)
{
    if (vo->config_ok && vo->driver->draw_osd)
        vo->driver->draw_osd(vo, osd);
}

void vo_flip_page(struct vo *vo, unsigned int pts_us, int duration)
{
    if (!vo->config_ok)
        return;
    if (!vo->redrawing) {
        vo->frame_loaded = false;
        vo->next_pts = MP_NOPTS_VALUE;
    }
    vo->want_redraw = false;
    vo->redrawing = false;
    if (vo->driver->flip_page_timed)
        vo->driver->flip_page_timed(vo, pts_us, duration);
    else
        vo->driver->flip_page(vo);
    vo->hasframe = true;
}

void vo_check_events(struct vo *vo)
{
    if (!vo->config_ok) {
        if (vo->registered_fd != -1)
            mp_input_rm_key_fd(vo->input_ctx, vo->registered_fd);
        vo->registered_fd = -1;
        return;
    }
    vo_control(vo, VOCTRL_CHECK_EVENTS, NULL);
}

void vo_seek_reset(struct vo *vo)
{
    vo_control(vo, VOCTRL_RESET, NULL);
    vo->frame_loaded = false;
    vo->hasframe = false;
    mp_image_unrefp(&vo->waiting_mpi);
}

void vo_destroy(struct vo *vo)
{
    if (vo->registered_fd != -1)
        mp_input_rm_key_fd(vo->input_ctx, vo->registered_fd);
    vo->driver->uninit(vo);
    talloc_free(vo->waiting_mpi);
    talloc_free(vo);
}

struct vo *init_best_video_out(struct mp_vo_opts *opts,
                               struct input_ctx *input_ctx,
                               struct encode_lavc_context *encode_lavc_ctx)
{
    struct m_obj_settings *vo_list = opts->video_driver_list;
    // first try the preferred drivers, with their optional subdevice param:
    if (vo_list && vo_list[0].name) {
        for (int n = 0; vo_list[n].name; n++) {
            // Something like "-vo name," allows fallback to autoprobing.
            if (strlen(vo_list[n].name) == 0)
                goto autoprobe;
            struct vo *vo = vo_create(opts, input_ctx, encode_lavc_ctx,
                                      vo_list[n].name, vo_list[n].attribs);
            if (vo)
                return vo;
        }
        return NULL;
    }
autoprobe:
    // now try the rest...
    for (int i = 0; video_out_drivers[i]; i++) {
        struct vo *vo = vo_create(opts, input_ctx, encode_lavc_ctx,
                          (char *)video_out_drivers[i]->info->short_name, NULL);
        if (vo)
            return vo;
    }
    return NULL;
}

// Fit *w/*h into the size specified by geo.
static void apply_autofit(int *w, int *h, int scr_w, int scr_h,
                          struct m_geometry *geo, bool allow_upscale)
{
    if (!geo->wh_valid)
        return;

    int dummy;
    int n_w = *w, n_h = *h;
    m_geometry_apply(&dummy, &dummy, &n_w, &n_h, scr_w, scr_h, geo);

    if (!allow_upscale && *w <= n_w && *h <= n_h)
        return;

    // If aspect mismatches, always make the window smaller than the fit box
    double asp = (double)*w / *h;
    double n_asp = (double)n_w / n_h;
    if (n_asp <= asp) {
        *w = n_w;
        *h = n_w / asp;
    } else {
        *w = n_h * asp;
        *h = n_h;
    }
}

// Set window size (vo->dwidth/dheight) and position (vo->dx/dy) according to
// the video display size d_w/d_h.
// NOTE: currently, all GUI backends do their own handling of window geometry
//       additional to this code. This is to deal with initial window placement,
//       fullscreen handling, avoiding resize on config() with no size change,
//       multi-monitor stuff, and possibly more.
static void determine_window_geometry(struct vo *vo, int d_w, int d_h)
{
    struct mp_vo_opts *opts = vo->opts;

    int scr_w = opts->screenwidth;
    int scr_h = opts->screenheight;

    aspect_calc_monitor(vo, &d_w, &d_h);

    apply_autofit(&d_w, &d_h, scr_w, scr_h, &opts->autofit, true);
    apply_autofit(&d_w, &d_h, scr_w, scr_h, &opts->autofit_larger, false);

    vo->dx = (int)(opts->screenwidth - d_w) / 2;
    vo->dy = (int)(opts->screenheight - d_h) / 2;
    m_geometry_apply(&vo->dx, &vo->dy, &d_w, &d_h, scr_w, scr_h,
                     &opts->geometry);

    vo->dx += vo->xinerama_x;
    vo->dy += vo->xinerama_y;
    vo->dwidth = d_w;
    vo->dheight = d_h;
}

static int event_fd_callback(void *ctx, int fd)
{
    struct vo *vo = ctx;
    vo_check_events(vo);
    return MP_INPUT_NOTHING;
}

int vo_reconfig(struct vo *vo, struct mp_image_params *params, int flags)
{
    int d_width = params->d_w;
    int d_height = params->d_h;
    aspect_save_videores(vo, params->w, params->h, d_width, d_height);

    if (vo_control(vo, VOCTRL_UPDATE_SCREENINFO, NULL) == VO_TRUE) {
        determine_window_geometry(vo, params->d_w, params->d_h);
        d_width = vo->dwidth;
        d_height = vo->dheight;
    }
    vo->dwidth = d_width;
    vo->dheight = d_height;

    struct mp_image_params p2 = *params;
    p2.d_w = vo->aspdat.prew;
    p2.d_h = vo->aspdat.preh;

    int ret;
    if (vo->driver->reconfig) {
        ret = vo->driver->reconfig(vo, &p2, flags);
    } else {
        // Old config() takes window size, while reconfig() takes aspect (!)
        ret = vo->driver->config(vo, p2.w, p2.h, d_width, d_height, flags,
                                 p2.imgfmt);
        ret = ret ? -1 : 0;
    }
    vo->config_ok = (ret >= 0);
    vo->config_count += vo->config_ok;
    if (vo->registered_fd == -1 && vo->event_fd != -1 && vo->config_ok) {
        mp_input_add_key_fd(vo->input_ctx, vo->event_fd, 1, event_fd_callback,
                            NULL, vo);
        vo->registered_fd = vo->event_fd;
    }
    vo->frame_loaded = false;
    vo->waiting_mpi = NULL;
    vo->redrawing = false;
    vo->hasframe = false;
    if (vo->config_ok) {
        // Legacy
        struct mp_csp_details csp;
        if (vo_control(vo, VOCTRL_GET_YUV_COLORSPACE, &csp) > 0) {
            csp.levels_in = params->colorlevels;
            csp.format = params->colorspace;
            vo_control(vo, VOCTRL_SET_YUV_COLORSPACE, &csp);
        }
    }
    return ret;
}

/**
 * \brief lookup an integer in a table, table must have 0 as the last key
 * \param key key to search for
 * \result translation corresponding to key or "to" value of last mapping
 *         if not found.
 */
int lookup_keymap_table(const struct mp_keymap *map, int key) {
  while (map->from && map->from != key) map++;
  return map->to;
}

static void print_video_rect(struct vo *vo, struct mp_rect src,
                             struct mp_rect dst, struct mp_osd_res osd)
{
    int lv = MSGL_V;

    int sw = src.x1 - src.x0, sh = src.y1 - src.y0;
    int dw = dst.x1 - dst.x0, dh = dst.y1 - dst.y0;

    mp_msg(MSGT_VO, lv, "[vo] Window size: %dx%d\n",
           vo->dwidth, vo->dheight);
    mp_msg(MSGT_VO, lv, "[vo] Video source: %dx%d (%dx%d)\n",
           vo->aspdat.orgw, vo->aspdat.orgh,
           vo->aspdat.prew, vo->aspdat.preh);
    mp_msg(MSGT_VO, lv, "[vo] Video display: (%d, %d) %dx%d -> (%d, %d) %dx%d\n",
           src.x0, src.y0, sw, sh, dst.x0, dst.y0, dw, dh);
    mp_msg(MSGT_VO, lv, "[vo] Video scale: %f/%f\n",
           (double)dw / sw, (double)dh / sh);
    mp_msg(MSGT_VO, lv, "[vo] OSD borders: l=%d t=%d r=%d b=%d\n",
           osd.ml, osd.mt, osd.mr, osd.mb);
    mp_msg(MSGT_VO, lv, "[vo] Video borders: l=%d t=%d r=%d b=%d\n",
           dst.x0, dst.y0, vo->dwidth - dst.x1, vo->dheight - dst.y1);
}

// Clamp [start, end) to range [0, size) with various fallbacks.
static void clamp_size(int size, int *start, int *end)
{
    *start = FFMAX(0, *start);
    *end = FFMIN(size, *end);
    if (*start >= *end) {
        *start = 0;
        *end = 1;
    }
}

// Round source to a multiple of 2, this is at least needed for vo_direct3d
// and ATI cards.
#define VID_SRC_ROUND_UP(x) (((x) + 1) & ~1)

static void src_dst_split_scaling(int src_size, int dst_size,
                                  int scaled_src_size,
                                  int *src_start, int *src_end,
                                  int *dst_start, int *dst_end,
                                  int *osd_margin_a, int *osd_margin_b)
{
    *src_start = 0;
    *src_end = src_size;
    *dst_start = (dst_size - scaled_src_size) / 2;
    *dst_end = *dst_start + scaled_src_size;

    // Distance of screen frame to video
    *osd_margin_a = *dst_start;
    *osd_margin_b = dst_size - *dst_end;

    // Clip to screen
    int s_src = *src_end - *src_start;
    int s_dst = *dst_end - *dst_start;
    if (*dst_start < 0) {
        int border = -(*dst_start) * s_src / s_dst;
        *src_start += VID_SRC_ROUND_UP(border);
        *dst_start = 0;
    }
    if (*dst_end > dst_size) {
        int border = (*dst_end - dst_size) * s_src / s_dst;
        *src_end -= VID_SRC_ROUND_UP(border);
        *dst_end = dst_size;
    }

    // For sanity: avoid bothering VOs with corner cases
    clamp_size(src_size, src_start, src_end);
    clamp_size(dst_size, dst_start, dst_end);
}

// Calculate the appropriate source and destination rectangle to
// get a correctly scaled picture, including pan-scan.
// out_src: visible part of the video
// out_dst: area of screen covered by the video source rectangle
// out_osd: OSD size, OSD margins, etc.
void vo_get_src_dst_rects(struct vo *vo, struct mp_rect *out_src,
                          struct mp_rect *out_dst, struct mp_osd_res *out_osd)
{
    struct mp_vo_opts *opts = vo->opts;
    int src_w = vo->aspdat.orgw;
    int src_h = vo->aspdat.orgh;
    struct mp_rect dst = {0, 0, vo->dwidth, vo->dheight};
    struct mp_rect src = {0, 0, src_w,      src_h};
    struct mp_osd_res osd = {
        .w = vo->dwidth,
        .h = vo->dheight,
        .display_par = vo->aspdat.monitor_par,
        .video_par = vo->aspdat.par,
    };
    if (opts->keepaspect) {
        int scaled_width, scaled_height;
        aspect_calc_panscan(vo, &scaled_width, &scaled_height);
        src_dst_split_scaling(src_w, vo->dwidth, scaled_width,
                              &src.x0, &src.x1, &dst.x0, &dst.x1,
                              &osd.ml, &osd.mr);
        src_dst_split_scaling(src_h, vo->dheight, scaled_height,
                              &src.y0, &src.y1, &dst.y0, &dst.y1,
                              &osd.mt, &osd.mb);
    }

    *out_src = src;
    *out_dst = dst;
    *out_osd = osd;

    print_video_rect(vo, src, dst, osd);
}

// Return the window title the VO should set. Always returns a null terminated
// string. The string is valid until frontend code is invoked again. Copy it if
// you need to keep the string for an extended period of time.
const char *vo_get_window_title(struct vo *vo)
{
    if (!vo->window_title)
        vo->window_title = talloc_strdup(vo, "");
    return vo->window_title;
}

/**
 * Generates a mouse movement message if those are enable and sends it
 * to the "main" MPlayer.
 *
 * \param posx new x position of mouse
 * \param posy new y position of mouse
 */
void vo_mouse_movement(struct vo *vo, int posx, int posy)
{
    if (!vo->opts->enable_mouse_movements)
        return;
    mp_input_set_mouse_pos(vo->input_ctx, posx, posy);
}