summaryrefslogtreecommitdiffstats
path: root/libmpcodecs/vf_ass.c
blob: a3a47f6b9e9a0696a4226677f1deb089637ff7a2 (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
/*
 * Copyright (C) 2006 Evgeniy Stepanov <eugeni.stepanov@gmail.com>
 *
 * 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 "config.h"

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

#include "config.h"
#include "mp_msg.h"
#include "options.h"

#include "img_format.h"
#include "mp_image.h"
#include "vf.h"
#include "sub/sub.h"

#include "libvo/fastmemcpy.h"

#include "m_option.h"
#include "m_struct.h"

#include "sub/ass_mp.h"

#define _r(c)  ((c)>>24)
#define _g(c)  (((c)>>16)&0xFF)
#define _b(c)  (((c)>>8)&0xFF)
#define _a(c)  ((c)&0xFF)
#define rgba2y(c)  ( (( 263*_r(c) + 516*_g(c) + 100*_b(c)) >> 10) + 16  )
#define rgba2u(c)  ( ((-152*_r(c) - 298*_g(c) + 450*_b(c)) >> 10) + 128 )
#define rgba2v(c)  ( (( 450*_r(c) - 376*_g(c) -  73*_b(c)) >> 10) + 128 )


static const struct vf_priv_s {
    int outh, outw;

    unsigned int outfmt;

    // 1 = auto-added filter: insert only if chain does not support EOSD already
    // 0 = insert always
    int auto_insert;

    struct osd_state *osd;
    ASS_Renderer *renderer_realaspect;
    ASS_Renderer *renderer_vsfilter;

    unsigned char *planes[3];
    struct line_limits {
        uint16_t start;
        uint16_t end;
    } *line_limits;
} vf_priv_dflt;

extern float sub_delay;

static int config(struct vf_instance *vf,
                  int width, int height, int d_width, int d_height,
                  unsigned int flags, unsigned int outfmt)
{
    struct MPOpts *opts = vf->opts;
    if (outfmt == IMGFMT_IF09)
        return 0;

    vf->priv->outh = height + ass_top_margin + ass_bottom_margin;
    vf->priv->outw = width;

    if (!opts->screen_size_x && !opts->screen_size_y) {
        d_width = d_width * vf->priv->outw / width;
        d_height = d_height * vf->priv->outh / height;
    }

    vf->priv->planes[1]   = malloc(vf->priv->outw * vf->priv->outh);
    vf->priv->planes[2]   = malloc(vf->priv->outw * vf->priv->outh);
    vf->priv->line_limits = malloc((vf->priv->outh + 1) / 2 * sizeof(*vf->priv->line_limits));

    if (vf->priv->renderer_realaspect) {
        mp_ass_configure(vf->priv->renderer_realaspect,
                         vf->priv->outw, vf->priv->outh, 0);
        mp_ass_configure(vf->priv->renderer_vsfilter,
                         vf->priv->outw, vf->priv->outh, 0);
        ass_set_aspect_ratio(vf->priv->renderer_realaspect,
                             (double)width / height * d_height / d_width, 1);
        ass_set_aspect_ratio(vf->priv->renderer_vsfilter, 1, 1);
    }

    return vf_next_config(vf, vf->priv->outw, vf->priv->outh, d_width,
			  d_height, flags, outfmt);
}

static void get_image(struct vf_instance *vf, mp_image_t *mpi)
{
    if (mpi->type == MP_IMGTYPE_IPB)
        return;
    if (mpi->flags & MP_IMGFLAG_PRESERVE)
        return;
    if (mpi->imgfmt != vf->priv->outfmt)
        return;                                     // colorspace differ

    // width never changes, always try full DR
    mpi->priv = vf->dmpi = vf_get_image(vf->next, mpi->imgfmt, mpi->type,
                                        mpi->flags | MP_IMGFLAG_READABLE,
                                        vf->priv->outw, vf->priv->outh);

    if ((vf->dmpi->flags & MP_IMGFLAG_DRAW_CALLBACK) &&
        !(vf->dmpi->flags & MP_IMGFLAG_DIRECT)) {
        mp_tmsg(MSGT_ASS, MSGL_INFO, "Full DR not possible, trying SLICES instead!\n");
        return;
    }

    // set up mpi as a cropped-down image of dmpi:
    if (mpi->flags & MP_IMGFLAG_PLANAR) {
        mpi->planes[0] = vf->dmpi->planes[0] +  ass_top_margin * vf->dmpi->stride[0];
        mpi->planes[1] = vf->dmpi->planes[1] + (ass_top_margin >> mpi->chroma_y_shift) * vf->dmpi->stride[1];
        mpi->planes[2] = vf->dmpi->planes[2] + (ass_top_margin >> mpi->chroma_y_shift) * vf->dmpi->stride[2];
        mpi->stride[1] = vf->dmpi->stride[1];
        mpi->stride[2] = vf->dmpi->stride[2];
    } else {
        mpi->planes[0] = vf->dmpi->planes[0] + ass_top_margin * vf->dmpi->stride[0];
    }
    mpi->stride[0] = vf->dmpi->stride[0];
    mpi->width = vf->dmpi->width;
    mpi->flags |= MP_IMGFLAG_DIRECT;
    mpi->flags &= ~MP_IMGFLAG_DRAW_CALLBACK;
//	vf->dmpi->flags&=~MP_IMGFLAG_DRAW_CALLBACK;
}

static void blank(mp_image_t *mpi, int y1, int y2)
{
    int color[3] = {16, 128, 128};    // black (YUV)
    int y;
    unsigned char *dst;
    int chroma_rows = (y2 - y1) >> mpi->chroma_y_shift;

    dst = mpi->planes[0] + y1 * mpi->stride[0];
    for (y = 0; y < y2 - y1; ++y) {
        memset(dst, color[0], mpi->w);
        dst += mpi->stride[0];
    }
    dst = mpi->planes[1] + (y1 >> mpi->chroma_y_shift) * mpi->stride[1];
    for (y = 0; y < chroma_rows; ++y) {
        memset(dst, color[1], mpi->chroma_width);
        dst += mpi->stride[1];
    }
    dst = mpi->planes[2] + (y1 >> mpi->chroma_y_shift) * mpi->stride[2];
    for (y = 0; y < chroma_rows; ++y) {
        memset(dst, color[2], mpi->chroma_width);
        dst += mpi->stride[2];
    }
}

static int prepare_image(struct vf_instance *vf, mp_image_t *mpi)
{
    if (mpi->flags & MP_IMGFLAG_DIRECT
	|| mpi->flags & MP_IMGFLAG_DRAW_CALLBACK) {
        vf->dmpi = mpi->priv;
        if (!vf->dmpi) {
            mp_tmsg(MSGT_ASS, MSGL_WARN, "Why do we get NULL??\n");
	    return 0;
        }
        mpi->priv = NULL;
        // we've used DR, so we're ready...
        if (ass_top_margin)
            blank(vf->dmpi, 0, ass_top_margin);
        if (ass_bottom_margin)
            blank(vf->dmpi, vf->priv->outh - ass_bottom_margin, vf->priv->outh);
        if (!(mpi->flags & MP_IMGFLAG_PLANAR))
            vf->dmpi->planes[1] = mpi->planes[1];             // passthrough rgb8 palette
        return 0;
    }

    // hope we'll get DR buffer:
    vf->dmpi = vf_get_image(vf->next, vf->priv->outfmt, MP_IMGTYPE_TEMP,
			    MP_IMGFLAG_ACCEPT_STRIDE | MP_IMGFLAG_READABLE,
                            vf->priv->outw, vf->priv->outh);

    // copy mpi->dmpi...
    if (mpi->flags & MP_IMGFLAG_PLANAR) {
        memcpy_pic(vf->dmpi->planes[0] + ass_top_margin * vf->dmpi->stride[0],
                   mpi->planes[0],
		   mpi->w,
		   mpi->h,
                   vf->dmpi->stride[0],
		   mpi->stride[0]);
        memcpy_pic(vf->dmpi->planes[1] + (ass_top_margin >> mpi->chroma_y_shift) * vf->dmpi->stride[1],
                   mpi->planes[1],
		   mpi->w >> mpi->chroma_x_shift,
		   mpi->h >> mpi->chroma_y_shift,
                   vf->dmpi->stride[1],
		   mpi->stride[1]);
        memcpy_pic(vf->dmpi->planes[2] + (ass_top_margin >> mpi->chroma_y_shift) * vf->dmpi->stride[2],
                   mpi->planes[2],
		   mpi->w >> mpi->chroma_x_shift,
		   mpi->h >> mpi->chroma_y_shift,
                   vf->dmpi->stride[2],
		   mpi->stride[2]);
    } else {
        memcpy_pic(vf->dmpi->planes[0] + ass_top_margin * vf->dmpi->stride[0],
                   mpi->planes[0],
		   mpi->w * (vf->dmpi->bpp / 8),
		   mpi->h,
                   vf->dmpi->stride[0],
		   mpi->stride[0]);
        vf->dmpi->planes[1] = mpi->planes[1];   // passthrough rgb8 palette
    }
    if (ass_top_margin)
        blank(vf->dmpi, 0, ass_top_margin);
    if (ass_bottom_margin)
        blank(vf->dmpi, vf->priv->outh - ass_bottom_margin, vf->priv->outh);
    return 0;
}

static void update_limits(struct vf_instance *vf, int starty, int endy,
                          int startx, int endx)
{
    starty >>= 1;
    endy = (endy + 1) >> 1;
    startx >>= 1;
    endx = (endx + 1) >> 1;
    for (int i = starty; i < endy; i++) {
        struct line_limits *ll = vf->priv->line_limits + i;
        if (startx < ll->start)
            ll->start = startx;
        if (endx > ll->end)
            ll->end = endx;
    }
}

/**
 * \brief Copy specified rows from render_context.dmpi to render_context.planes, upsampling to 4:4:4
 */
static void copy_from_image(struct vf_instance *vf)
{
    int pl;

    for (pl = 1; pl < 3; ++pl) {
        int dst_stride = vf->priv->outw;
        int src_stride = vf->dmpi->stride[pl];

        unsigned char *src = vf->dmpi->planes[pl];
        unsigned char *dst = vf->priv->planes[pl];
        for (int i = 0; i < (vf->priv->outh + 1) / 2; i++) {
            struct line_limits *ll = vf->priv->line_limits + i;
            unsigned char *dst_next = dst + dst_stride;
            for (int j = ll->start; j < ll->end; j++) {
                unsigned char val = src[j];
                dst[j << 1] = val;
                dst[(j << 1) + 1] = val;
                dst_next[j << 1] = val;
                dst_next[(j << 1) + 1] = val;
            }
            src += src_stride;
            dst = dst_next + dst_stride;
        }
    }
}

/**
 * \brief Copy all previously copied rows back to render_context.dmpi
 */
static void copy_to_image(struct vf_instance *vf)
{
    int pl;
    int i, j;
    for (pl = 1; pl < 3; ++pl) {
        int dst_stride = vf->dmpi->stride[pl];
        int src_stride = vf->priv->outw;

        unsigned char *dst      = vf->dmpi->planes[pl];
        unsigned char *src      = vf->priv->planes[pl];
        unsigned char *src_next = vf->priv->planes[pl] + src_stride;
        for (i = 0; i < vf->dmpi->chroma_height; ++i) {
            for (j = vf->priv->line_limits[i].start; j < vf->priv->line_limits[i].end; j++) {
                unsigned val = 0;
                val += src[j << 1];
                val += src[(j << 1) + 1];
                val += src_next[j << 1];
                val += src_next[(j << 1) + 1];
                dst[j] = val >> 2;
            }
            dst += dst_stride;
            src      = src_next + src_stride;
            src_next = src + src_stride;
        }
    }
}

static void my_draw_bitmap(struct vf_instance *vf, unsigned char *bitmap,
			   int bitmap_w, int bitmap_h, int stride,
			   int dst_x, int dst_y, unsigned color)
{
    unsigned char y = rgba2y(color);
    unsigned char u = rgba2u(color);
    unsigned char v = rgba2v(color);
    unsigned char opacity = 255 - _a(color);
    unsigned char *src, *dsty, *dstu, *dstv;
    int i, j;
    mp_image_t *dmpi = vf->dmpi;

    src = bitmap;
    dsty = dmpi->planes[0] + dst_x + dst_y * dmpi->stride[0];
    dstu = vf->priv->planes[1] + dst_x + dst_y * vf->priv->outw;
    dstv = vf->priv->planes[2] + dst_x + dst_y * vf->priv->outw;
    for (i = 0; i < bitmap_h; ++i) {
        for (j = 0; j < bitmap_w; ++j) {
            unsigned k = (src[j] * opacity + 255) >> 8;
            dsty[j] = (k * y + (255 - k) * dsty[j] + 255) >> 8;
            dstu[j] = (k * u + (255 - k) * dstu[j] + 255) >> 8;
            dstv[j] = (k * v + (255 - k) * dstv[j] + 255) >> 8;
        }
        src  += stride;
        dsty += dmpi->stride[0];
        dstu += vf->priv->outw;
        dstv += vf->priv->outw;
    }
}

static int render_frame(struct vf_instance *vf, mp_image_t *mpi,
			const ASS_Image *img)
{
    if (img) {
        for (int i = 0; i < (vf->priv->outh + 1) / 2; i++)
            vf->priv->line_limits[i] = (struct line_limits){65535, 0};
        for (const ASS_Image *im = img; im; im = im->next)
            update_limits(vf, im->dst_y, im->dst_y + im->h,
			  im->dst_x, im->dst_x + im->w);
        copy_from_image(vf);
        while (img) {
            my_draw_bitmap(vf, img->bitmap, img->w, img->h, img->stride,
                           img->dst_x, img->dst_y, img->color);
            img = img->next;
        }
        copy_to_image(vf);
    }
    return 0;
}

static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts)
{
    struct osd_state *osd = vf->priv->osd;
    ASS_Image *images = 0;
    ASS_Renderer *renderer = osd->vsfilter_aspect ?
        vf->priv->renderer_vsfilter : vf->priv->renderer_realaspect;
    if (sub_visibility && renderer && osd->ass_track
            && (pts != MP_NOPTS_VALUE)) {
        mp_ass_reload_options(renderer, vf->opts, &osd->ass_force_reload);
        images = ass_render_frame(renderer, osd->ass_track,
                                  (pts + sub_delay) * 1000 + .5, NULL);
    }

    prepare_image(vf, mpi);
    if (images)
        render_frame(vf, mpi, images);

    return vf_next_put_image(vf, vf->dmpi, pts);
}

static int query_format(struct vf_instance *vf, unsigned int fmt)
{
    switch (fmt) {
    case IMGFMT_YV12:
    case IMGFMT_I420:
    case IMGFMT_IYUV:
        return vf_next_query_format(vf, vf->priv->outfmt);
    }
    return 0;
}

static int control(vf_instance_t *vf, int request, void *data)
{
    switch (request) {
    case VFCTRL_SET_OSD_OBJ:
        vf->priv->osd = data;
        break;
    case VFCTRL_INIT_EOSD:
        vf->priv->renderer_realaspect = ass_renderer_init((ASS_Library *)data);
        if (!vf->priv->renderer_realaspect)
            return CONTROL_FALSE;
        vf->priv->renderer_vsfilter = ass_renderer_init((ASS_Library *)data);
        if (!vf->priv->renderer_vsfilter) {
            ass_renderer_done(vf->priv->renderer_realaspect);
            return CONTROL_FALSE;
        }
        mp_ass_configure_fonts(vf->priv->renderer_realaspect);
        mp_ass_configure_fonts(vf->priv->renderer_vsfilter);
        return CONTROL_TRUE;
    case VFCTRL_DRAW_EOSD:
        if (vf->priv->renderer_realaspect)
            return CONTROL_TRUE;
        break;
    }
    return vf_next_control(vf, request, data);
}

static void uninit(struct vf_instance *vf)
{
    if (vf->priv->renderer_realaspect) {
        ass_renderer_done(vf->priv->renderer_realaspect);
        ass_renderer_done(vf->priv->renderer_vsfilter);
    }
    free(vf->priv->planes[1]);
    free(vf->priv->planes[2]);
    free(vf->priv->line_limits);
    free(vf->priv);
}

static const unsigned int fmt_list[] = {
    IMGFMT_YV12,
    IMGFMT_I420,
    IMGFMT_IYUV,
    0
};

static int vf_open(vf_instance_t *vf, char *args)
{
    int flags;
    vf->priv->outfmt = vf_match_csp(&vf->next, fmt_list, IMGFMT_YV12);
    if (vf->priv->outfmt)
        flags = vf_next_query_format(vf, vf->priv->outfmt);
    if (!vf->priv->outfmt) {
        uninit(vf);
        return 0;
    } else if (vf->priv->auto_insert && flags & VFCAP_EOSD) {
        uninit(vf);
        return -1;
    }

    if (vf->priv->auto_insert)
        mp_msg(MSGT_ASS, MSGL_INFO, "[ass] auto-open\n");

    vf->config = config;
    vf->query_format = query_format;
    vf->uninit    = uninit;
    vf->control   = control;
    vf->get_image = get_image;
    vf->put_image = put_image;
    vf->default_caps = VFCAP_EOSD;
    return 1;
}

#define ST_OFF(f) M_ST_OFF(struct vf_priv_s, f)
static const m_option_t vf_opts_fields[] = {
    {"auto", ST_OFF(auto_insert), CONF_TYPE_FLAG, 0, 0, 1, NULL},
    {NULL, NULL, 0, 0, 0, 0, NULL}
};

static const m_struct_t vf_opts = {
    "ass",
    sizeof(struct vf_priv_s),
    &vf_priv_dflt,
    vf_opts_fields
};

const vf_info_t vf_info_ass = {
    "Render ASS/SSA subtitles",
    "ass",
    "Evgeniy Stepanov",
    "",
    vf_open,
    &vf_opts
};