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ffmpeg / libavformat / grab.c @ 5a757507

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1
/*
2
 * Linux video grab interface
3
 * Copyright (c) 2000,2001 Fabrice Bellard.
4
 *
5
 * This library is free software; you can redistribute it and/or
6
 * modify it under the terms of the GNU Lesser General Public
7
 * License as published by the Free Software Foundation; either
8
 * version 2 of the License, or (at your option) any later version.
9
 *
10
 * This library is distributed in the hope that it will be useful,
11
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13
 * Lesser General Public License for more details.
14
 *
15
 * You should have received a copy of the GNU Lesser General Public
16
 * License along with this library; if not, write to the Free Software
17
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
18
 */
19
#include "avformat.h"
20
#include <unistd.h>
21
#include <fcntl.h>
22
#include <sys/ioctl.h>
23
#include <sys/mman.h>
24
#include <sys/time.h>
25
#define _LINUX_TIME_H 1
26
#include <linux/videodev.h>
27
#include <time.h>
28

    
29
typedef struct {
30
    int fd;
31
    int frame_format; /* see VIDEO_PALETTE_xxx */
32
    int use_mmap;
33
    int width, height;
34
    int frame_rate;
35
    int frame_rate_base;
36
    int64_t time_frame;
37
    int frame_size;
38
    struct video_capability video_cap;
39
    struct video_audio audio_saved;
40
    uint8_t *video_buf;
41
    struct video_mbuf gb_buffers;
42
    struct video_mmap gb_buf;
43
    int gb_frame;
44

    
45
    /* ATI All In Wonder specific stuff */
46
    /* XXX: remove and merge in libavcodec/imgconvert.c */
47
    int aiw_enabled;
48
    int deint;
49
    int halfw;
50
    uint8_t *src_mem;
51
    uint8_t *lum_m4_mem;
52
} VideoData;
53

    
54
static int aiw_init(VideoData *s);
55
static int aiw_read_picture(VideoData *s, uint8_t *data);
56
static int aiw_close(VideoData *s);
57

    
58
static int grab_read_header(AVFormatContext *s1, AVFormatParameters *ap)
59
{
60
    VideoData *s = s1->priv_data;
61
    AVStream *st;
62
    int width, height;
63
    int video_fd, frame_size;
64
    int ret, frame_rate, frame_rate_base;
65
    int desired_palette;
66
    struct video_tuner tuner;
67
    struct video_audio audio;
68
    const char *video_device;
69

    
70
    if (!ap || ap->width <= 0 || ap->height <= 0 || ap->frame_rate <= 0)
71
        return -1;
72
    
73
    width = ap->width;
74
    height = ap->height;
75
    frame_rate      = ap->frame_rate;
76
    frame_rate_base = ap->frame_rate_base;
77

    
78
    st = av_new_stream(s1, 0);
79
    if (!st)
80
        return -ENOMEM;
81

    
82
    s->width = width;
83
    s->height = height;
84
    s->frame_rate      = frame_rate;
85
    s->frame_rate_base = frame_rate_base;
86

    
87
    video_device = ap->device;
88
    if (!video_device)
89
        video_device = "/dev/video";
90
    video_fd = open(video_device, O_RDWR);
91
    if (video_fd < 0) {
92
        perror(video_device);
93
        goto fail;
94
    }
95
    
96
    if (ioctl(video_fd,VIDIOCGCAP, &s->video_cap) < 0) {
97
        perror("VIDIOCGCAP");
98
        goto fail;
99
    }
100

    
101
    if (!(s->video_cap.type & VID_TYPE_CAPTURE)) {
102
        av_log(s1, AV_LOG_ERROR, "Fatal: grab device does not handle capture\n");
103
        goto fail;
104
    }
105

    
106
    desired_palette = -1;
107
    if (st->codec.pix_fmt == PIX_FMT_YUV420P) {
108
        desired_palette = VIDEO_PALETTE_YUV420P;
109
    } else if (st->codec.pix_fmt == PIX_FMT_YUV422) {
110
        desired_palette = VIDEO_PALETTE_YUV422;
111
    } else if (st->codec.pix_fmt == PIX_FMT_BGR24) {
112
        desired_palette = VIDEO_PALETTE_RGB24;
113
    }    
114

    
115
    /* set tv standard */
116
    if (ap->standard && !ioctl(video_fd, VIDIOCGTUNER, &tuner)) {
117
        if (!strcasecmp(ap->standard, "pal"))
118
            tuner.mode = VIDEO_MODE_PAL;
119
        else if (!strcasecmp(ap->standard, "secam"))
120
            tuner.mode = VIDEO_MODE_SECAM;
121
        else
122
            tuner.mode = VIDEO_MODE_NTSC;
123
        ioctl(video_fd, VIDIOCSTUNER, &tuner);
124
    }
125
    
126
    /* unmute audio */
127
    audio.audio = 0;
128
    ioctl(video_fd, VIDIOCGAUDIO, &audio);
129
    memcpy(&s->audio_saved, &audio, sizeof(audio));
130
    audio.flags &= ~VIDEO_AUDIO_MUTE;
131
    ioctl(video_fd, VIDIOCSAUDIO, &audio);
132

    
133
    ret = ioctl(video_fd,VIDIOCGMBUF,&s->gb_buffers);
134
    if (ret < 0) {
135
        /* try to use read based access */
136
        struct video_window win;
137
        struct video_picture pict;
138
        int val;
139

    
140
        win.x = 0;
141
        win.y = 0;
142
        win.width = width;
143
        win.height = height;
144
        win.chromakey = -1;
145
        win.flags = 0;
146

    
147
        ioctl(video_fd, VIDIOCSWIN, &win);
148

    
149
        ioctl(video_fd, VIDIOCGPICT, &pict);
150
#if 0
151
        printf("v4l: colour=%d hue=%d brightness=%d constrast=%d whiteness=%d\n",
152
               pict.colour,
153
               pict.hue,
154
               pict.brightness,
155
               pict.contrast,
156
               pict.whiteness);
157
#endif        
158
        /* try to choose a suitable video format */
159
        pict.palette = desired_palette;
160
        if (desired_palette == -1 || (ret = ioctl(video_fd, VIDIOCSPICT, &pict)) < 0) {
161
            pict.palette=VIDEO_PALETTE_YUV420P;
162
            ret = ioctl(video_fd, VIDIOCSPICT, &pict);
163
            if (ret < 0) {
164
                pict.palette=VIDEO_PALETTE_YUV422;
165
                ret = ioctl(video_fd, VIDIOCSPICT, &pict);
166
                if (ret < 0) {
167
                    pict.palette=VIDEO_PALETTE_RGB24;
168
                    ret = ioctl(video_fd, VIDIOCSPICT, &pict);
169
                    if (ret < 0) 
170
                        goto fail1;
171
                }
172
            }
173
        }
174

    
175
        s->frame_format = pict.palette;
176

    
177
        val = 1;
178
        ioctl(video_fd, VIDIOCCAPTURE, &val);
179

    
180
        s->time_frame = av_gettime();
181
        s->use_mmap = 0;
182
        
183
        /* ATI All In Wonder automatic activation */
184
        if (!strcmp(s->video_cap.name, "Km")) {
185
            if (aiw_init(s) < 0)
186
                goto fail;
187
            s->aiw_enabled = 1;
188
            /* force 420P format because convertion from YUV422 to YUV420P
189
               is done in this driver (ugly) */
190
            s->frame_format = VIDEO_PALETTE_YUV420P;
191
        }
192
    } else {
193
        s->video_buf = mmap(0,s->gb_buffers.size,PROT_READ|PROT_WRITE,MAP_SHARED,video_fd,0);
194
        if ((unsigned char*)-1 == s->video_buf) {
195
            perror("mmap");
196
            goto fail;
197
        }
198
        s->gb_frame = 0;
199
        s->time_frame = av_gettime();
200
        
201
        /* start to grab the first frame */
202
        s->gb_buf.frame = s->gb_frame % s->gb_buffers.frames;
203
        s->gb_buf.height = height;
204
        s->gb_buf.width = width;
205
        s->gb_buf.format = desired_palette;
206

    
207
        if (desired_palette == -1 || (ret = ioctl(video_fd, VIDIOCMCAPTURE, &s->gb_buf)) < 0) {
208
            s->gb_buf.format = VIDEO_PALETTE_YUV420P;
209
            
210
            ret = ioctl(video_fd, VIDIOCMCAPTURE, &s->gb_buf);
211
            if (ret < 0 && errno != EAGAIN) {
212
                /* try YUV422 */
213
                s->gb_buf.format = VIDEO_PALETTE_YUV422;
214
                
215
                ret = ioctl(video_fd, VIDIOCMCAPTURE, &s->gb_buf);
216
                if (ret < 0 && errno != EAGAIN) {
217
                    /* try RGB24 */
218
                    s->gb_buf.format = VIDEO_PALETTE_RGB24;
219
                    ret = ioctl(video_fd, VIDIOCMCAPTURE, &s->gb_buf);
220
                }
221
            }
222
        }
223
        if (ret < 0) {
224
            if (errno != EAGAIN) {
225
            fail1:
226
                av_log(s1, AV_LOG_ERROR, "Fatal: grab device does not support suitable format\n");
227
            } else {
228
                av_log(s1, AV_LOG_ERROR,"Fatal: grab device does not receive any video signal\n");
229
            }
230
            goto fail;
231
        }
232
        s->frame_format = s->gb_buf.format;
233
        s->use_mmap = 1;
234
    }
235

    
236
    switch(s->frame_format) {
237
    case VIDEO_PALETTE_YUV420P:
238
        frame_size = (width * height * 3) / 2;
239
        st->codec.pix_fmt = PIX_FMT_YUV420P;
240
        break;
241
    case VIDEO_PALETTE_YUV422:
242
        frame_size = width * height * 2;
243
        st->codec.pix_fmt = PIX_FMT_YUV422;
244
        break;
245
    case VIDEO_PALETTE_RGB24:
246
        frame_size = width * height * 3;
247
        st->codec.pix_fmt = PIX_FMT_BGR24; /* NOTE: v4l uses BGR24, not RGB24 ! */
248
        break;
249
    default:
250
        goto fail;
251
    }
252
    s->fd = video_fd;
253
    s->frame_size = frame_size;
254
    
255
    st->codec.codec_type = CODEC_TYPE_VIDEO;
256
    st->codec.codec_id = CODEC_ID_RAWVIDEO;
257
    st->codec.width = width;
258
    st->codec.height = height;
259
    st->codec.frame_rate      = frame_rate;
260
    st->codec.frame_rate_base = frame_rate_base;
261
    
262
    av_set_pts_info(s1, 48, 1, 1000000); /* 48 bits pts in us */
263

    
264
    return 0;
265
 fail:
266
    if (video_fd >= 0)
267
        close(video_fd);
268
    av_free(st);
269
    return -EIO;
270
}
271

    
272
static int v4l_mm_read_picture(VideoData *s, uint8_t *buf)
273
{
274
    uint8_t *ptr;
275

    
276
    /* Setup to capture the next frame */
277
    s->gb_buf.frame = (s->gb_frame + 1) % s->gb_buffers.frames;
278
    if (ioctl(s->fd, VIDIOCMCAPTURE, &s->gb_buf) < 0) {
279
        if (errno == EAGAIN)
280
            av_log(NULL, AV_LOG_ERROR, "Cannot Sync\n");
281
        else
282
            perror("VIDIOCMCAPTURE");
283
        return -EIO;
284
    }
285

    
286
    while (ioctl(s->fd, VIDIOCSYNC, &s->gb_frame) < 0 &&
287
           (errno == EAGAIN || errno == EINTR));
288

    
289
    ptr = s->video_buf + s->gb_buffers.offsets[s->gb_frame];
290
    memcpy(buf, ptr, s->frame_size);
291

    
292
    /* This is now the grabbing frame */
293
    s->gb_frame = s->gb_buf.frame;
294

    
295
    return s->frame_size;
296
}
297

    
298
static int grab_read_packet(AVFormatContext *s1, AVPacket *pkt)
299
{
300
    VideoData *s = s1->priv_data;
301
    int64_t curtime, delay;
302
    struct timespec ts;
303
    int64_t per_frame = (int64_t_C(1000000) * s->frame_rate_base) / s->frame_rate;
304

    
305
    /* Calculate the time of the next frame */
306
    s->time_frame += per_frame;
307

    
308
    /* wait based on the frame rate */
309
    for(;;) {
310
        curtime = av_gettime();
311
        delay = s->time_frame - curtime;
312
        if (delay <= 0) {
313
            if (delay < -per_frame) {
314
                /* printf("grabbing is %d frames late (dropping)\n", (int) -(delay / 16666)); */
315
                s->time_frame += per_frame;
316
            }
317
            break;
318
        }    
319
        ts.tv_sec = delay / 1000000;
320
        ts.tv_nsec = (delay % 1000000) * 1000;
321
        nanosleep(&ts, NULL);
322
    }
323

    
324
    if (av_new_packet(pkt, s->frame_size) < 0)
325
        return -EIO;
326

    
327
    pkt->pts = curtime & ((1LL << 48) - 1);
328

    
329
    /* read one frame */
330
    if (s->aiw_enabled) {
331
        return aiw_read_picture(s, pkt->data);
332
    } else if (s->use_mmap) {
333
        return v4l_mm_read_picture(s, pkt->data);
334
    } else {
335
        if (read(s->fd, pkt->data, pkt->size) != pkt->size)
336
            return -EIO;
337
        return s->frame_size;
338
    }
339
}
340

    
341
static int grab_read_close(AVFormatContext *s1)
342
{
343
    VideoData *s = s1->priv_data;
344

    
345
    if (s->aiw_enabled)
346
        aiw_close(s);
347

    
348
    if (s->use_mmap)
349
        munmap(s->video_buf, s->gb_buffers.size);
350

    
351
    /* mute audio. we must force it because the BTTV driver does not
352
       return its state correctly */
353
    s->audio_saved.flags |= VIDEO_AUDIO_MUTE;
354
    ioctl(s->fd, VIDIOCSAUDIO, &s->audio_saved);
355

    
356
    close(s->fd);
357
    return 0;
358
}
359

    
360
static AVInputFormat video_grab_device_format = {
361
    "video4linux",
362
    "video grab",
363
    sizeof(VideoData),
364
    NULL,
365
    grab_read_header,
366
    grab_read_packet,
367
    grab_read_close,
368
    .flags = AVFMT_NOFILE,
369
};
370

    
371
/* All in Wonder specific stuff */
372
/* XXX: remove and merge in libavcodec/imgconvert.c */
373

    
374
static int aiw_init(VideoData *s)
375
{
376
    int width, height;
377

    
378
    width = s->width;
379
    height = s->height;
380

    
381
    if ((width == s->video_cap.maxwidth && height == s->video_cap.maxheight) ||
382
        (width == s->video_cap.maxwidth && height == s->video_cap.maxheight*2) ||
383
        (width == s->video_cap.maxwidth/2 && height == s->video_cap.maxheight)) {
384
        
385
        s->deint=0;
386
        s->halfw=0;
387
        if (height == s->video_cap.maxheight*2) s->deint=1;
388
        if (width == s->video_cap.maxwidth/2) s->halfw=1;
389
    } else {
390
        av_log(NULL, AV_LOG_ERROR, "\nIncorrect Grab Size Supplied - Supported Sizes Are:\n");
391
        av_log(NULL, AV_LOG_ERROR, " %dx%d  %dx%d %dx%d\n\n",
392
                s->video_cap.maxwidth,s->video_cap.maxheight,
393
                s->video_cap.maxwidth,s->video_cap.maxheight*2,
394
                s->video_cap.maxwidth/2,s->video_cap.maxheight);
395
        goto fail;
396
    }
397

    
398
    if (s->halfw == 0) {
399
        s->src_mem = av_malloc(s->width*2);
400
    } else {
401
        s->src_mem = av_malloc(s->width*4);
402
    }
403
    if (!s->src_mem) goto fail;
404

    
405
    s->lum_m4_mem = av_malloc(s->width);
406
    if (!s->lum_m4_mem)
407
        goto fail;
408
    return 0;
409
 fail:
410
    av_freep(&s->src_mem);
411
    av_freep(&s->lum_m4_mem);
412
    return -1;
413
}
414

    
415
#ifdef HAVE_MMX
416
#include "../libavcodec/i386/mmx.h"
417

    
418
#define LINE_WITH_UV \
419
                    movq_m2r(ptr[0],mm0); \
420
                    movq_m2r(ptr[8],mm1);  \
421
                    movq_r2r(mm0, mm4); \
422
                    punpcklbw_r2r(mm1,mm0); \
423
                    punpckhbw_r2r(mm1,mm4); \
424
                    movq_r2r(mm0,mm5); \
425
                    punpcklbw_r2r(mm4,mm0); \
426
                    punpckhbw_r2r(mm4,mm5); \
427
                    movq_r2r(mm0,mm1); \
428
                    punpcklbw_r2r(mm5,mm1); \
429
                    movq_r2m(mm1,lum[0]); \
430
                    movq_m2r(ptr[16],mm2); \
431
                    movq_m2r(ptr[24],mm1); \
432
                    movq_r2r(mm2,mm4); \
433
                    punpcklbw_r2r(mm1,mm2); \
434
                    punpckhbw_r2r(mm1,mm4); \
435
                    movq_r2r(mm2,mm3); \
436
                    punpcklbw_r2r(mm4,mm2); \
437
                    punpckhbw_r2r(mm4,mm3); \
438
                    movq_r2r(mm2,mm1); \
439
                    punpcklbw_r2r(mm3,mm1); \
440
                    movq_r2m(mm1,lum[8]); \
441
                    punpckhdq_r2r(mm2,mm0); \
442
                    punpckhdq_r2r(mm3,mm5); \
443
                    movq_r2m(mm0,cb[0]); \
444
                    movq_r2m(mm5,cr[0]);
445

    
446
#define LINE_NO_UV \
447
                    movq_m2r(ptr[0],mm0);\
448
                    movq_m2r(ptr[8],mm1);\
449
                    movq_r2r(mm0, mm4);\
450
                    punpcklbw_r2r(mm1,mm0); \
451
                    punpckhbw_r2r(mm1,mm4);\
452
                    movq_r2r(mm0,mm5);\
453
                    punpcklbw_r2r(mm4,mm0);\
454
                    punpckhbw_r2r(mm4,mm5);\
455
                    movq_r2r(mm0,mm1);\
456
                    punpcklbw_r2r(mm5,mm1);\
457
                    movq_r2m(mm1,lum[0]);\
458
                    movq_m2r(ptr[16],mm2);\
459
                    movq_m2r(ptr[24],mm1);\
460
                    movq_r2r(mm2,mm4);\
461
                    punpcklbw_r2r(mm1,mm2);\
462
                    punpckhbw_r2r(mm1,mm4);\
463
                    movq_r2r(mm2,mm3);\
464
                    punpcklbw_r2r(mm4,mm2);\
465
                    punpckhbw_r2r(mm4,mm3);\
466
                    movq_r2r(mm2,mm1);\
467
                    punpcklbw_r2r(mm3,mm1);\
468
                    movq_r2m(mm1,lum[8]);
469

    
470
#define LINE_WITHUV_AVG \
471
                    movq_m2r(ptr[0], mm0);\
472
                    movq_m2r(ptr[8], mm1);\
473
                    movq_r2r(mm0, mm4);\
474
                    punpcklbw_r2r(mm1,mm0);\
475
                    punpckhbw_r2r(mm1,mm4);\
476
                    movq_r2r(mm0,mm5);\
477
                    punpcklbw_r2r(mm4,mm0);\
478
                    punpckhbw_r2r(mm4,mm5);\
479
                    movq_r2r(mm0,mm1);\
480
                    movq_r2r(mm5,mm2);\
481
                    punpcklbw_r2r(mm7,mm1);\
482
                    punpcklbw_r2r(mm7,mm2);\
483
                    paddw_r2r(mm6,mm1);\
484
                    paddw_r2r(mm2,mm1);\
485
                    psraw_i2r(1,mm1);\
486
                    packuswb_r2r(mm7,mm1);\
487
                    movd_r2m(mm1,lum[0]);\
488
                    movq_m2r(ptr[16],mm2);\
489
                    movq_m2r(ptr[24],mm1);\
490
                    movq_r2r(mm2,mm4);\
491
                    punpcklbw_r2r(mm1,mm2);\
492
                    punpckhbw_r2r(mm1,mm4);\
493
                    movq_r2r(mm2,mm3);\
494
                    punpcklbw_r2r(mm4,mm2);\
495
                    punpckhbw_r2r(mm4,mm3);\
496
                    movq_r2r(mm2,mm1);\
497
                    movq_r2r(mm3,mm4);\
498
                    punpcklbw_r2r(mm7,mm1);\
499
                    punpcklbw_r2r(mm7,mm4);\
500
                    paddw_r2r(mm6,mm1);\
501
                    paddw_r2r(mm4,mm1);\
502
                    psraw_i2r(1,mm1);\
503
                    packuswb_r2r(mm7,mm1);\
504
                    movd_r2m(mm1,lum[4]);\
505
                    punpckhbw_r2r(mm7,mm0);\
506
                    punpckhbw_r2r(mm7,mm2);\
507
                    paddw_r2r(mm6,mm0);\
508
                    paddw_r2r(mm2,mm0);\
509
                    psraw_i2r(1,mm0);\
510
                    packuswb_r2r(mm7,mm0);\
511
                    punpckhbw_r2r(mm7,mm5);\
512
                    punpckhbw_r2r(mm7,mm3);\
513
                    paddw_r2r(mm6,mm5);\
514
                    paddw_r2r(mm3,mm5);\
515
                    psraw_i2r(1,mm5);\
516
                    packuswb_r2r(mm7,mm5);\
517
                    movd_r2m(mm0,cb[0]);\
518
                    movd_r2m(mm5,cr[0]);
519

    
520
#define LINE_NOUV_AVG \
521
                    movq_m2r(ptr[0],mm0);\
522
                    movq_m2r(ptr[8],mm1);\
523
                    pand_r2r(mm5,mm0);\
524
                    pand_r2r(mm5,mm1);\
525
                    pmaddwd_r2r(mm6,mm0);\
526
                    pmaddwd_r2r(mm6,mm1);\
527
                    packssdw_r2r(mm1,mm0);\
528
                    paddw_r2r(mm6,mm0);\
529
                    psraw_i2r(1,mm0);\
530
                    movq_m2r(ptr[16],mm2);\
531
                    movq_m2r(ptr[24],mm3);\
532
                    pand_r2r(mm5,mm2);\
533
                    pand_r2r(mm5,mm3);\
534
                    pmaddwd_r2r(mm6,mm2);\
535
                    pmaddwd_r2r(mm6,mm3);\
536
                    packssdw_r2r(mm3,mm2);\
537
                    paddw_r2r(mm6,mm2);\
538
                    psraw_i2r(1,mm2);\
539
                    packuswb_r2r(mm2,mm0);\
540
                    movq_r2m(mm0,lum[0]);
541

    
542
#define DEINT_LINE_LUM(ptroff) \
543
                    movd_m2r(lum_m4[(ptroff)],mm0);\
544
                    movd_m2r(lum_m3[(ptroff)],mm1);\
545
                    movd_m2r(lum_m2[(ptroff)],mm2);\
546
                    movd_m2r(lum_m1[(ptroff)],mm3);\
547
                    movd_m2r(lum[(ptroff)],mm4);\
548
                    punpcklbw_r2r(mm7,mm0);\
549
                    movd_r2m(mm2,lum_m4[(ptroff)]);\
550
                    punpcklbw_r2r(mm7,mm1);\
551
                    punpcklbw_r2r(mm7,mm2);\
552
                    punpcklbw_r2r(mm7,mm3);\
553
                    punpcklbw_r2r(mm7,mm4);\
554
                    psllw_i2r(2,mm1);\
555
                    psllw_i2r(1,mm2);\
556
                    paddw_r2r(mm6,mm1);\
557
                    psllw_i2r(2,mm3);\
558
                    paddw_r2r(mm2,mm1);\
559
                    paddw_r2r(mm4,mm0);\
560
                    paddw_r2r(mm3,mm1);\
561
                    psubusw_r2r(mm0,mm1);\
562
                    psrlw_i2r(3,mm1);\
563
                    packuswb_r2r(mm7,mm1);\
564
                    movd_r2m(mm1,lum_m2[(ptroff)]);
565

    
566
#else
567
#include "../libavcodec/dsputil.h"
568

    
569
#define LINE_WITH_UV \
570
                    lum[0]=ptr[0];lum[1]=ptr[2];lum[2]=ptr[4];lum[3]=ptr[6];\
571
                    cb[0]=ptr[1];cb[1]=ptr[5];\
572
                    cr[0]=ptr[3];cr[1]=ptr[7];\
573
                    lum[4]=ptr[8];lum[5]=ptr[10];lum[6]=ptr[12];lum[7]=ptr[14];\
574
                    cb[2]=ptr[9];cb[3]=ptr[13];\
575
                    cr[2]=ptr[11];cr[3]=ptr[15];\
576
                    lum[8]=ptr[16];lum[9]=ptr[18];lum[10]=ptr[20];lum[11]=ptr[22];\
577
                    cb[4]=ptr[17];cb[5]=ptr[21];\
578
                    cr[4]=ptr[19];cr[5]=ptr[23];\
579
                    lum[12]=ptr[24];lum[13]=ptr[26];lum[14]=ptr[28];lum[15]=ptr[30];\
580
                    cb[6]=ptr[25];cb[7]=ptr[29];\
581
                    cr[6]=ptr[27];cr[7]=ptr[31];
582

    
583
#define LINE_NO_UV \
584
                    lum[0]=ptr[0];lum[1]=ptr[2];lum[2]=ptr[4];lum[3]=ptr[6];\
585
                    lum[4]=ptr[8];lum[5]=ptr[10];lum[6]=ptr[12];lum[7]=ptr[14];\
586
                    lum[8]=ptr[16];lum[9]=ptr[18];lum[10]=ptr[20];lum[11]=ptr[22];\
587
                    lum[12]=ptr[24];lum[13]=ptr[26];lum[14]=ptr[28];lum[15]=ptr[30];
588

    
589
#define LINE_WITHUV_AVG \
590
                    sum=(ptr[0]+ptr[2]+1) >> 1;lum[0]=sum; \
591
                    sum=(ptr[4]+ptr[6]+1) >> 1;lum[1]=sum; \
592
                    sum=(ptr[1]+ptr[5]+1) >> 1;cb[0]=sum; \
593
                    sum=(ptr[3]+ptr[7]+1) >> 1;cr[0]=sum; \
594
                    sum=(ptr[8]+ptr[10]+1) >> 1;lum[2]=sum; \
595
                    sum=(ptr[12]+ptr[14]+1) >> 1;lum[3]=sum; \
596
                    sum=(ptr[9]+ptr[13]+1) >> 1;cb[1]=sum; \
597
                    sum=(ptr[11]+ptr[15]+1) >> 1;cr[1]=sum; \
598
                    sum=(ptr[16]+ptr[18]+1) >> 1;lum[4]=sum; \
599
                    sum=(ptr[20]+ptr[22]+1) >> 1;lum[5]=sum; \
600
                    sum=(ptr[17]+ptr[21]+1) >> 1;cb[2]=sum; \
601
                    sum=(ptr[19]+ptr[23]+1) >> 1;cr[2]=sum; \
602
                    sum=(ptr[24]+ptr[26]+1) >> 1;lum[6]=sum; \
603
                    sum=(ptr[28]+ptr[30]+1) >> 1;lum[7]=sum; \
604
                    sum=(ptr[25]+ptr[29]+1) >> 1;cb[3]=sum; \
605
                    sum=(ptr[27]+ptr[31]+1) >> 1;cr[3]=sum; 
606

    
607
#define LINE_NOUV_AVG \
608
                    sum=(ptr[0]+ptr[2]+1) >> 1;lum[0]=sum; \
609
                    sum=(ptr[4]+ptr[6]+1) >> 1;lum[1]=sum; \
610
                    sum=(ptr[8]+ptr[10]+1) >> 1;lum[2]=sum; \
611
                    sum=(ptr[12]+ptr[14]+1) >> 1;lum[3]=sum; \
612
                    sum=(ptr[16]+ptr[18]+1) >> 1;lum[4]=sum; \
613
                    sum=(ptr[20]+ptr[22]+1) >> 1;lum[5]=sum; \
614
                    sum=(ptr[24]+ptr[26]+1) >> 1;lum[6]=sum; \
615
                    sum=(ptr[28]+ptr[30]+1) >> 1;lum[7]=sum; 
616

    
617
#define DEINT_LINE_LUM(ptroff) \
618
                    sum=(-lum_m4[(ptroff)]+(lum_m3[(ptroff)]<<2)+(lum_m2[(ptroff)]<<1)+(lum_m1[(ptroff)]<<2)-lum[(ptroff)]); \
619
                    lum_m4[(ptroff)]=lum_m2[(ptroff)];\
620
                    lum_m2[(ptroff)]=cm[(sum+4)>>3];\
621
                    sum=(-lum_m4[(ptroff)+1]+(lum_m3[(ptroff)+1]<<2)+(lum_m2[(ptroff)+1]<<1)+(lum_m1[(ptroff)+1]<<2)-lum[(ptroff)+1]); \
622
                    lum_m4[(ptroff)+1]=lum_m2[(ptroff)+1];\
623
                    lum_m2[(ptroff)+1]=cm[(sum+4)>>3];\
624
                    sum=(-lum_m4[(ptroff)+2]+(lum_m3[(ptroff)+2]<<2)+(lum_m2[(ptroff)+2]<<1)+(lum_m1[(ptroff)+2]<<2)-lum[(ptroff)+2]); \
625
                    lum_m4[(ptroff)+2]=lum_m2[(ptroff)+2];\
626
                    lum_m2[(ptroff)+2]=cm[(sum+4)>>3];\
627
                    sum=(-lum_m4[(ptroff)+3]+(lum_m3[(ptroff)+3]<<2)+(lum_m2[(ptroff)+3]<<1)+(lum_m1[(ptroff)+3]<<2)-lum[(ptroff)+3]); \
628
                    lum_m4[(ptroff)+3]=lum_m2[(ptroff)+3];\
629
                    lum_m2[(ptroff)+3]=cm[(sum+4)>>3];
630

    
631
#endif
632

    
633

    
634
/* Read two fields separately. */
635
static int aiw_read_picture(VideoData *s, uint8_t *data)
636
{
637
    uint8_t *ptr, *lum, *cb, *cr;
638
    int h;
639
#ifndef HAVE_MMX
640
    int sum;
641
#endif
642
    uint8_t* src = s->src_mem;
643
    uint8_t *ptrend = &src[s->width*2];
644
    lum=data;
645
    cb=&lum[s->width*s->height];
646
    cr=&cb[(s->width*s->height)/4];
647
    if (s->deint == 0 && s->halfw == 0) {
648
        while (read(s->fd,src,s->width*2) < 0) {
649
            usleep(100);
650
        }
651
        for (h = 0; h < s->height-2; h+=2) {
652
            for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
653
                LINE_WITH_UV
654
                    }
655
            read(s->fd,src,s->width*2);
656
            for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16) {
657
                LINE_NO_UV
658
                    }
659
            read(s->fd,src,s->width*2);
660
        }
661
        /*
662
         * Do last two lines
663
         */
664
        for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
665
            LINE_WITH_UV
666
                }
667
        read(s->fd,src,s->width*2);
668
        for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16) {
669
            LINE_NO_UV
670
                }
671
        /* drop second field */
672
        while (read(s->fd,src,s->width*2) < 0) {
673
            usleep(100);
674
        }
675
        for (h = 0; h < s->height - 1; h++) {
676
            read(s->fd,src,s->width*2);
677
        }
678
    } else if (s->halfw == 1) {
679
#ifdef HAVE_MMX
680
        mmx_t rounder;
681
        mmx_t masker;
682
        rounder.uw[0]=1;
683
        rounder.uw[1]=1;
684
        rounder.uw[2]=1;
685
        rounder.uw[3]=1;
686
        masker.ub[0]=0xff;
687
        masker.ub[1]=0;
688
        masker.ub[2]=0xff;
689
        masker.ub[3]=0;
690
        masker.ub[4]=0xff;
691
        masker.ub[5]=0;
692
        masker.ub[6]=0xff;
693
        masker.ub[7]=0;
694
        pxor_r2r(mm7,mm7);
695
        movq_m2r(rounder,mm6);
696
#endif
697
        while (read(s->fd,src,s->width*4) < 0) {
698
            usleep(100);
699
        }
700
        ptrend = &src[s->width*4];
701
        for (h = 0; h < s->height-2; h+=2) {
702
            for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8, cb+=4, cr+=4) {
703
                LINE_WITHUV_AVG
704
                    }
705
            read(s->fd,src,s->width*4);
706
#ifdef HAVE_MMX
707
            movq_m2r(masker,mm5);
708
#endif
709
            for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8) {
710
                LINE_NOUV_AVG
711
                    }
712
            read(s->fd,src,s->width*4);
713
        }
714
        /*
715
 * Do last two lines
716
 */
717
        for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8, cb+=4, cr+=4) {
718
            LINE_WITHUV_AVG
719
                }
720
        read(s->fd,src,s->width*4);
721
#ifdef HAVE_MMX
722
        movq_m2r(masker,mm5);
723
#endif
724
        for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8) {
725
            LINE_NOUV_AVG
726
                }
727
        /* drop second field */
728
        while (read(s->fd,src,s->width*4) < 0) {
729
            usleep(100);
730
        }
731
        for (h = 0; h < s->height - 1; h++) {
732
            read(s->fd,src,s->width*4);
733
        }
734
    } else {
735
        uint8_t *lum_m1, *lum_m2, *lum_m3, *lum_m4;
736
#ifdef HAVE_MMX
737
        mmx_t rounder;
738
        rounder.uw[0]=4;
739
        rounder.uw[1]=4;
740
        rounder.uw[2]=4;
741
        rounder.uw[3]=4;
742
        movq_m2r(rounder,mm6);
743
        pxor_r2r(mm7,mm7);
744
#else
745
        uint8_t *cm = cropTbl + MAX_NEG_CROP;
746
#endif
747

    
748
        /* read two fields and deinterlace them */
749
        while (read(s->fd,src,s->width*2) < 0) {
750
            usleep(100);
751
        }
752
        for (h = 0; h < (s->height/2)-2; h+=2) {
753
            for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
754
                LINE_WITH_UV
755
                    }
756
            read(s->fd,src,s->width*2);
757
            /* skip a luminance line - will be filled in later */
758
            lum += s->width;
759
            for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
760
                LINE_WITH_UV
761
                    }
762
            /* skip a luminance line - will be filled in later */
763
            lum += s->width;
764
            read(s->fd,src,s->width*2);
765
        }
766
        /*
767
 * Do last two lines
768
 */
769
        for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
770
            LINE_WITH_UV
771
                }
772
        /* skip a luminance line - will be filled in later */
773
        lum += s->width;
774
        read(s->fd,src,s->width*2);
775
        for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
776
            LINE_WITH_UV
777
                }
778
        /*
779
 *
780
 * SECOND FIELD
781
 *
782
 */
783
        lum=&data[s->width];
784
        while (read(s->fd,src,s->width*2) < 0) {
785
            usleep(10);
786
        }
787
        /* First (and last) two lines not interlaced */
788
        for (h = 0; h < 2; h++) {
789
            for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16) {
790
                LINE_NO_UV
791
                    }
792
            read(s->fd,src,s->width*2);
793
            /* skip a luminance line */
794
            lum += s->width;
795
        }
796
        lum_m1=&lum[-s->width];
797
        lum_m2=&lum_m1[-s->width];
798
        lum_m3=&lum_m2[-s->width];
799
        memmove(s->lum_m4_mem,&lum_m3[-s->width],s->width);
800
        for (; h < (s->height/2)-1; h++) {
801
            lum_m4=s->lum_m4_mem;
802
            for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16,lum_m1+=16,lum_m2+=16,lum_m3+=16,lum_m4+=16) {
803
                LINE_NO_UV
804

    
805
                    DEINT_LINE_LUM(0)
806
                    DEINT_LINE_LUM(4)
807
                    DEINT_LINE_LUM(8)
808
                    DEINT_LINE_LUM(12)
809
                    }
810
            read(s->fd,src,s->width*2);
811
            /* skip a luminance line */
812
            lum += s->width;
813
            lum_m1 += s->width;
814
            lum_m2 += s->width;
815
            lum_m3 += s->width;
816
            //                lum_m4 += s->width;
817
        }
818
        /*
819
 * Do last line
820
 */
821
        lum_m4=s->lum_m4_mem;
822
        for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, lum_m1+=16, lum_m2+=16, lum_m3+=16, lum_m4+=16) {
823
            LINE_NO_UV
824

    
825
                DEINT_LINE_LUM(0)
826
                DEINT_LINE_LUM(4)
827
                DEINT_LINE_LUM(8)
828
                DEINT_LINE_LUM(12)
829
                }
830
    }
831
#ifdef HAVE_MMX
832
    emms();
833
#endif
834
    return s->frame_size;
835
}
836

    
837
static int aiw_close(VideoData *s)
838
{
839
    av_freep(&s->lum_m4_mem);
840
    av_freep(&s->src_mem);
841
    return 0;
842
}
843

    
844
int video_grab_init(void)
845
{
846
    av_register_input_format(&video_grab_device_format);
847
    return 0;
848
}