6
Some ideas are based on xawtv/libng's grab-v4l.c written by
7
Gerd Knorr <kraxel@bytesex.org>
9
Multithreading, a/v sync and native ALSA support by
10
Jindrich Makovicka <makovick@kmlinux.fjfi.cvut.cz>
12
Mjpeg hardware encoding support by
13
Iv�n Sz�nt� <szivan@freemail.hu>
15
CODE IS UNDER DEVELOPMENT, NO FEATURE REQUESTS PLEASE!
20
#if defined(USE_TV) && defined(HAVE_TV_V4L)
26
#include <sys/ioctl.h>
27
#include <sys/types.h>
30
/* Necessary to prevent collisions between <linux/time.h> and <sys/time.h> when V4L2 is installed. */
33
#include <linux/videodev.h>
39
#ifdef HAVE_SYS_SYSINFO_H
40
#include <sys/sysinfo.h>
44
#include "libaf/af_format.h"
45
#include "libvo/img_format.h"
46
#include "libvo/fastmemcpy.h"
47
#include "libvo/videodev_mjpeg.h"
53
static tvi_info_t info = {
54
"Video 4 Linux input",
61
#define PAL_HEIGHT 576
64
#define NTSC_WIDTH 640
65
#define NTSC_HEIGHT 480
66
#define NTSC_FPS (30000.0/1001.0)
68
#define MAX_AUDIO_CHANNELS 10
70
#define VID_BUF_SIZE_IMMEDIATE 2
71
#define VIDEO_AVG_BUFFER_SIZE 600
77
struct video_capability capability;
78
struct video_channel *channels;
80
struct video_tuner tuner;
83
struct video_picture picture;
84
int format; /* output format */
90
struct video_mbuf mbuf;
92
struct video_mmap *buf;
100
struct video_audio audio[MAX_AUDIO_CHANNELS];
101
int audio_channels[MAX_AUDIO_CHANNELS];
103
/* buffering stuff */
106
int audio_buffer_size;
108
unsigned char *audio_ringbuffer;
109
long long *audio_skew_buffer;
110
volatile int audio_head;
111
volatile int audio_tail;
112
volatile int audio_cnt;
113
volatile long long audio_skew;
114
volatile double audio_skew_factor;
115
volatile long long audio_skew_measure_time;
116
volatile int audio_drop;
119
int video_buffer_size_max;
120
volatile int video_buffer_size_current;
121
unsigned char **video_ringbuffer;
122
long long *video_timebuffer;
123
long long *video_avg_buffer;
125
int video_interval_sum;
126
volatile int video_head;
127
volatile int video_tail;
128
volatile int video_cnt;
130
volatile int shutdown;
132
pthread_t audio_grabber_thread;
133
pthread_t video_grabber_thread;
134
pthread_mutex_t audio_starter;
135
pthread_mutex_t skew_mutex;
136
pthread_mutex_t video_buffer_mutex;
139
double audio_secs_per_block;
140
long long audio_skew_total;
141
long audio_recv_blocks_total;
142
long audio_sent_blocks_total;
149
static const char *device_cap2name[] = {
150
"capture", "tuner", "teletext", "overlay", "chromakey", "clipping",
151
"frameram", "scales", "monochrome", "subcapture", "mpeg-decoder",
152
"mpeg-encoder", "mjpeg-decoder", "mjpeg-encoder", NULL
155
static const char *device_palette2name[] = {
156
"-", "grey", "hi240", "rgb16", "rgb24", "rgb32", "rgb15", "yuv422",
157
"yuyv", "uyvy", "yuv420", "yuv411", "raw", "yuv422p", "yuv411p",
160
#define PALETTE(x) ((x < sizeof(device_palette2name)/sizeof(char*)) ? device_palette2name[x] : "UNKNOWN")
162
static const char *norm2name(int mode)
167
case VIDEO_MODE_SECAM:
169
case VIDEO_MODE_NTSC:
171
case VIDEO_MODE_AUTO:
178
static const char *audio_mode2name(int mode)
181
case VIDEO_SOUND_MONO:
183
case VIDEO_SOUND_STEREO:
185
case VIDEO_SOUND_LANG1:
187
case VIDEO_SOUND_LANG2:
194
static void *audio_grabber(void *data);
195
static void *video_grabber(void *data);
197
static int palette2depth(int palette)
202
case VIDEO_PALETTE_RGB555:
204
case VIDEO_PALETTE_RGB565:
206
case VIDEO_PALETTE_RGB24:
208
case VIDEO_PALETTE_RGB32:
211
case VIDEO_PALETTE_YUV411P:
212
case VIDEO_PALETTE_YUV420P:
213
case VIDEO_PALETTE_YUV410P:
216
case VIDEO_PALETTE_YUV422P:
217
case VIDEO_PALETTE_YUV422:
218
case VIDEO_PALETTE_YUYV:
219
case VIDEO_PALETTE_UYVY:
220
case VIDEO_PALETTE_YUV420:
221
case VIDEO_PALETTE_YUV411:
227
static int format2palette(int format)
232
return(VIDEO_PALETTE_RGB555);
234
return(VIDEO_PALETTE_RGB565);
236
return(VIDEO_PALETTE_RGB24);
238
return(VIDEO_PALETTE_RGB32);
241
return(VIDEO_PALETTE_YUV420P);
243
return(VIDEO_PALETTE_YUV422);
245
return(VIDEO_PALETTE_UYVY);
250
// sets and sanitizes audio buffer/block sizes
251
static void setup_audio_buffer_sizes(priv_t *priv)
253
int bytes_per_sample = priv->audio_in.bytes_per_sample;
255
// make the audio buffer at least 5 seconds long
256
priv->audio_buffer_size = 1 + 5*priv->audio_in.samplerate
257
*priv->audio_in.channels
258
*bytes_per_sample/priv->audio_in.blocksize;
259
if (priv->audio_buffer_size < 256) priv->audio_buffer_size = 256;
261
// make the skew buffer at least 1 second long
262
priv->aud_skew_cnt = 1 + 1*priv->audio_in.samplerate
263
*priv->audio_in.channels
264
*bytes_per_sample/priv->audio_in.blocksize;
265
if (priv->aud_skew_cnt < 16) priv->aud_skew_cnt = 16;
267
mp_msg(MSGT_TV, MSGL_V, "Audio capture - buffer %d blocks of %d bytes, skew average from %d meas.\n",
268
priv->audio_buffer_size, priv->audio_in.blocksize, priv->aud_skew_cnt);
271
tvi_handle_t *tvi_init_v4l(char *device, char *adevice)
282
/* set video device name */
284
priv->video_device = strdup("/dev/video0");
286
priv->video_device = strdup(device);
288
/* set video device name */
290
priv->audio_device = NULL;
292
priv->audio_device = strdup(adevice);
295
/* allocation failed */
296
if (!priv->video_device) {
304
/* retrieves info about audio channels from the BTTV */
305
static void init_v4l_audio(priv_t *priv)
310
if (!priv->capability.audios) return;
314
mp_msg(MSGT_TV, MSGL_V, " Audio devices: %d\n", priv->capability.audios);
316
mp_msg(MSGT_TV, MSGL_V, "Video capture card reports the audio setup as follows:\n");
317
for (i = 0; i < priv->capability.audios; i++)
319
if (i >= MAX_AUDIO_CHANNELS)
321
mp_msg(MSGT_TV, MSGL_ERR, "no space for more audio channels (increase in source!) (%d > %d)\n",
322
i, MAX_AUDIO_CHANNELS);
323
i = priv->capability.audios;
327
priv->audio[i].audio = i;
328
if (ioctl(priv->video_fd, VIDIOCGAUDIO, &priv->audio[i]) == -1)
330
mp_msg(MSGT_TV, MSGL_ERR, "ioctl get audio failed: %s\n", strerror(errno));
334
/* mute all channels */
335
priv->audio[i].flags |= VIDEO_AUDIO_MUTE;
337
if (tv_param_amode >= 0) {
338
switch (tv_param_amode) {
340
reqmode = VIDEO_SOUND_MONO;
343
reqmode = VIDEO_SOUND_STEREO;
346
reqmode = VIDEO_SOUND_LANG1;
349
reqmode = VIDEO_SOUND_LANG2;
352
mp_msg(MSGT_TV, MSGL_ERR, "Unknown audio mode requested.\n");
355
if (reqmode >= 0) priv->audio[i].mode = reqmode;
357
ioctl(priv->video_fd, VIDIOCSAUDIO, &priv->audio[i]);
359
// get the parameters back
360
if (ioctl(priv->video_fd, VIDIOCGAUDIO, &priv->audio[i]) == -1)
362
mp_msg(MSGT_TV, MSGL_ERR, "ioctl get audio failed: %s\n", strerror(errno));
366
switch(priv->audio[i].mode)
368
case VIDEO_SOUND_MONO:
369
case VIDEO_SOUND_LANG1:
370
case VIDEO_SOUND_LANG2:
371
priv->audio_channels[i] = 1;
373
case VIDEO_SOUND_STEREO:
374
priv->audio_channels[i] = 2;
377
mp_msg(MSGT_TV, MSGL_ERR, "Card reports an unknown audio mode !\n");
378
mp_msg(MSGT_TV, MSGL_ERR, "Trying two channel audio. Use forcechan to override.\n");
379
priv->audio_channels[i] = 2;
383
if (reqmode >= 0 && priv->audio[i].mode != reqmode) {
384
mp_msg(MSGT_TV, MSGL_ERR, "Audio mode setup warning!\n");
385
mp_msg(MSGT_TV, MSGL_ERR, "Requested mode was %s, but v4l still reports %s.\n",
386
audio_mode2name(reqmode), audio_mode2name(priv->audio[i].mode));
387
mp_msg(MSGT_TV, MSGL_ERR, "You may need \"forcechan\" option to force stereo/mono audio recording.\n");
391
mp_msg(MSGT_TV, MSGL_V, " %d: %s: ", priv->audio[i].audio,
392
priv->audio[i].name);
393
if (priv->audio[i].flags & VIDEO_AUDIO_MUTABLE) {
394
mp_msg(MSGT_TV, MSGL_V, "muted=%s ",
395
(priv->audio[i].flags & VIDEO_AUDIO_MUTE) ? "yes" : "no");
397
mp_msg(MSGT_TV, MSGL_V, "vol=%d bass=%d treble=%d balance=%d mode=%s",
398
priv->audio[i].volume, priv->audio[i].bass, priv->audio[i].treble,
399
priv->audio[i].balance, audio_mode2name(priv->audio[i].mode));
400
mp_msg(MSGT_TV, MSGL_V, " chan=%d\n", priv->audio_channels[i]);
402
if (tv_param_forcechan >= 0)
403
priv->audio_channels[i] = tv_param_forcechan;
405
// we'll call VIDIOCSAUDIO again when starting capture
406
// let's set audio mode to requested mode again for the case
407
// when VIDIOCGAUDIO just cannot report the mode correctly
408
if (reqmode >= 0) priv->audio[i].mode = reqmode;
412
#if !defined(__LINUX_VIDEODEV2_H) && !defined(VIDIOC_QUERYCAP)
413
struct v4l2_capability
415
__u8 driver[16]; /* i.e. "bttv" */
416
__u8 card[32]; /* i.e. "Hauppauge WinTV" */
417
__u8 bus_info[32]; /* "PCI:" + pci_dev->slot_name */
418
__u32 version; /* should use KERNEL_VERSION() */
419
__u32 capabilities; /* Device capabilities */
423
#define VIDIOC_QUERYCAP _IOR ('V', 0, struct v4l2_capability)
426
static int init(priv_t *priv)
430
if (tv_param_immediate == 1)
431
tv_param_noaudio = 1;
433
priv->video_ringbuffer = NULL;
434
priv->video_timebuffer = NULL;
435
priv->video_avg_buffer = NULL;
436
priv->audio_ringbuffer = NULL;
437
priv->audio_skew_buffer = NULL;
439
priv->video_fd = open(priv->video_device, O_RDWR);
440
mp_msg(MSGT_TV, MSGL_DBG2, "Video fd: %d, %p\n", priv->video_fd,
442
if (priv->video_fd == -1)
444
mp_msg(MSGT_TV, MSGL_ERR, "unable to open '%s': %s\n",
445
priv->video_device, strerror(errno));
450
if (ioctl(priv->video_fd, VIDIOC_QUERYCAP, &priv->capability) == 0) {
451
mp_msg(MSGT_TV, MSGL_ERR, "=================================================================\n");
452
mp_msg(MSGT_TV, MSGL_ERR, " WARNING: YOU ARE USING V4L DEMUXER WITH V4L2 DRIVERS!!!\n");
453
mp_msg(MSGT_TV, MSGL_ERR, " As the V4L1 compatibility layer is broken, this may not work.\n");
454
mp_msg(MSGT_TV, MSGL_ERR, " If you encounter any problems, use driver=v4l2 instead.\n");
455
mp_msg(MSGT_TV, MSGL_ERR, " Bugreports on driver=v4l with v4l2 drivers will be ignored.\n");
456
mp_msg(MSGT_TV, MSGL_ERR, "=================================================================\n");
459
/* get capabilities (priv->capability is needed!) */
460
if (ioctl(priv->video_fd, VIDIOCGCAP, &priv->capability) == -1)
462
mp_msg(MSGT_TV, MSGL_ERR, "ioctl get capabilites failed: %s\n", strerror(errno));
466
fcntl(priv->video_fd, F_SETFD, FD_CLOEXEC);
468
mp_msg(MSGT_TV, MSGL_INFO, "Selected device: %s\n", priv->capability.name);
469
mp_msg(MSGT_TV, MSGL_INFO, " Capabilites: ");
470
for (i = 0; device_cap2name[i] != NULL; i++)
471
if (priv->capability.type & (1 << i))
472
mp_msg(MSGT_TV, MSGL_INFO, "%s ", device_cap2name[i]);
473
mp_msg(MSGT_TV, MSGL_INFO, "\n");
474
mp_msg(MSGT_TV, MSGL_INFO, " Device type: %d\n", priv->capability.type);
475
mp_msg(MSGT_TV, MSGL_INFO, " Supported sizes: %dx%d => %dx%d\n",
476
priv->capability.minwidth, priv->capability.minheight,
477
priv->capability.maxwidth, priv->capability.maxheight);
478
priv->width = priv->capability.minwidth;
479
priv->height = priv->capability.minheight;
481
/* somewhere here could disable tv_param_mjpeg, if it is not a capability */
483
/* initialize if necessary */
484
if ( tv_param_mjpeg )
486
struct mjpeg_params bparm;
487
struct mjpeg_requestbuffers breq; /* buffer requests */
489
if (ioctl(priv->video_fd, MJPIOC_G_PARAMS, &bparm) < 0)
491
mp_msg(MSGT_TV, MSGL_ERR,
492
" MJP: Error getting video parameters: %s\n", strerror(errno));
496
mp_msg(MSGT_TV, MSGL_INFO,
497
" MJP: previous params: x: %d, y: %d, w: %d, h: %d, decim: %d, fields: %d,\n",
498
bparm.img_x, bparm.img_y, bparm.img_width, bparm.img_height,
499
bparm.decimation, bparm.field_per_buff);
501
mp_msg(MSGT_TV, MSGL_INFO,
502
" MJP: HorDcm: %d, VerDcm: %d, TmpDcm: %d\n",
503
bparm.HorDcm, bparm.VerDcm, bparm.TmpDcm);
505
bparm.input = tv_param_input; /* tv */
506
if (!strcasecmp(tv_param_norm, "pal"))
507
bparm.norm = 0; /* PAL */
508
else if (!strcasecmp(tv_param_norm, "ntsc"))
509
bparm.norm = 1; /* NTSC */
510
else if (!strcasecmp(tv_param_norm, "secam"))
511
bparm.norm = 2; /* SECAM */
512
bparm.quality = tv_param_quality;
513
bparm.decimation = tv_param_decimation;
515
mp_msg(MSGT_TV, MSGL_INFO, " MJP: setting params to decimation: %d, quality: %d\n",
516
bparm.decimation, bparm.quality);
518
if (ioctl(priv->video_fd, MJPIOC_S_PARAMS, &bparm) < 0)
520
mp_msg(MSGT_TV, MSGL_ERR,
521
" MJP: Error setting video parameters: %s\n", strerror(errno));
525
if (ioctl(priv->video_fd, MJPIOC_G_PARAMS, &bparm) < 0)
527
mp_msg(MSGT_TV, MSGL_ERR,
528
" MJP: Error getting video parameters: %s\n", strerror(errno));
532
mp_msg(MSGT_TV, MSGL_INFO,
533
" MJP: current params: x: %d, y: %d, w: %d, h: %d, decim: %d, fields: %d,\n",
534
bparm.img_x, bparm.img_y, bparm.img_width, bparm.img_height,
535
bparm.decimation, bparm.field_per_buff);
537
mp_msg(MSGT_TV, MSGL_INFO,
538
" MJP: HorDcm: %d, VerDcm: %d, TmpDcm: %d\n",
539
bparm.HorDcm, bparm.VerDcm, bparm.TmpDcm);
543
priv -> nbuf = breq.count;
544
priv->mbuf.frames = priv -> nbuf;
545
priv->mjpeg_bufsize = 256*1024;
546
if (tv_param_buffer_size >= 0) {
547
priv->mjpeg_bufsize = tv_param_buffer_size*1024;
549
breq.size = priv -> mjpeg_bufsize;
550
if (ioctl(priv->video_fd, MJPIOC_REQBUFS,&(breq)) < 0)
552
mp_msg (MSGT_TV, MSGL_ERR,
553
" MJP: Error requesting video buffers: %s\n", strerror(errno));
556
mp_msg(MSGT_TV, MSGL_INFO,
557
" MJP: Got %ld buffers of size %ld KB\n",
558
breq.count, breq.size/1024);
560
priv -> mmap = mmap(0, breq.count * breq.size,
561
PROT_READ|PROT_WRITE, MAP_SHARED, priv->video_fd, 0);
562
if (priv -> mmap == MAP_FAILED)
564
mp_msg(MSGT_TV, MSGL_INFO,
565
" MJP: Error mapping video buffers: %s\n", strerror(errno));
570
mp_msg(MSGT_TV, MSGL_INFO, " Inputs: %d\n", priv->capability.channels);
571
priv->channels = (struct video_channel *)malloc(sizeof(struct video_channel)*priv->capability.channels);
574
memset(priv->channels, 0, sizeof(struct video_channel)*priv->capability.channels);
575
for (i = 0; i < priv->capability.channels; i++)
577
priv->channels[i].channel = i;
578
if (ioctl(priv->video_fd, VIDIOCGCHAN, &priv->channels[i]) == -1)
580
mp_msg(MSGT_TV, MSGL_ERR, "ioctl get channel failed: %s\n", strerror(errno));
583
mp_msg(MSGT_TV, MSGL_INFO, " %d: %s: %s%s%s%s (tuner:%d, norm:%s)\n", i,
584
priv->channels[i].name,
585
(priv->channels[i].flags & VIDEO_VC_TUNER) ? "tuner " : "",
586
(priv->channels[i].flags & VIDEO_VC_AUDIO) ? "audio " : "",
587
(priv->channels[i].flags & VIDEO_TYPE_TV) ? "tv " : "",
588
(priv->channels[i].flags & VIDEO_TYPE_CAMERA) ? "camera " : "",
589
priv->channels[i].tuners,
590
norm2name(priv->channels[i].norm));
592
priv->act_channel = 0;
594
if (!(priv->capability.type & VID_TYPE_CAPTURE))
596
mp_msg(MSGT_TV, MSGL_ERR, "Only grabbing supported (for overlay use another program)\n");
600
if ( !tv_param_mjpeg )
602
/* map grab buffer */
603
if (ioctl(priv->video_fd, VIDIOCGMBUF, &priv->mbuf) == -1)
605
mp_msg(MSGT_TV, MSGL_ERR, "ioctl get mbuf failed: %s\n", strerror(errno));
609
mp_msg(MSGT_TV, MSGL_V, "mbuf: size=%d, frames=%d\n",
610
priv->mbuf.size, priv->mbuf.frames);
611
priv->mmap = mmap(0, priv->mbuf.size, PROT_READ|PROT_WRITE,
612
MAP_SHARED, priv->video_fd, 0);
613
if (priv->mmap == (unsigned char *)-1)
615
mp_msg(MSGT_TV, MSGL_ERR, "Unable to map memory for buffers: %s\n", strerror(errno));
618
mp_msg(MSGT_TV, MSGL_DBG2, "our buffer: %p\n", priv->mmap);
621
priv->nbuf = priv->mbuf.frames;
624
priv->buf = (struct video_mmap *)malloc(priv->nbuf * sizeof(struct video_mmap));
627
memset(priv->buf, 0, priv->nbuf * sizeof(struct video_mmap));
630
/* init v4l audio even when we don't capture */
631
init_v4l_audio(priv);
633
if (!priv->capability.audios && !tv_param_force_audio) tv_param_noaudio = 1;
636
if (!tv_param_noaudio) {
638
#if defined(HAVE_ALSA9) || defined(HAVE_ALSA1X)
640
audio_in_init(&priv->audio_in, AUDIO_IN_ALSA);
642
audio_in_init(&priv->audio_in, AUDIO_IN_OSS);
644
audio_in_init(&priv->audio_in, AUDIO_IN_OSS);
647
if (priv->audio_device) {
648
audio_in_set_device(&priv->audio_in, priv->audio_device);
651
if (tv_param_audio_id < priv->capability.audios)
652
priv->audio_id = tv_param_audio_id;
655
audio_in_set_samplerate(&priv->audio_in, 44100);
656
if (priv->capability.audios) {
657
audio_in_set_channels(&priv->audio_in, priv->audio_channels[priv->audio_id]);
659
if (tv_param_forcechan >= 0) {
660
audio_in_set_channels(&priv->audio_in, tv_param_forcechan);
662
audio_in_set_channels(&priv->audio_in, 2);
665
if (audio_in_setup(&priv->audio_in) < 0) return 0;
666
setup_audio_buffer_sizes(priv);
673
free(priv->channels);
677
if (priv->video_fd != -1)
678
close(priv->video_fd);
682
static int uninit(priv_t *priv)
687
mp_msg(MSGT_TV, MSGL_V, "Waiting for threads to finish... ");
688
if (!tv_param_noaudio) {
689
pthread_join(priv->audio_grabber_thread, NULL);
690
pthread_mutex_destroy(&priv->audio_starter);
691
pthread_mutex_destroy(&priv->skew_mutex);
693
pthread_mutex_destroy(&priv->video_buffer_mutex);
694
pthread_join(priv->video_grabber_thread, NULL);
695
mp_msg(MSGT_TV, MSGL_V, "done\n");
697
if (priv->capability.audios) {
698
priv->audio[priv->audio_id].flags |= VIDEO_AUDIO_MUTE;
699
ioctl(priv->video_fd, VIDIOCSAUDIO, &priv->audio[priv->audio_id]);
702
if ( tv_param_mjpeg )
705
if (ioctl(priv->video_fd, MJPIOC_QBUF_CAPT, &num) < 0)
707
mp_msg(MSGT_TV, MSGL_ERR, "\n MJP: ioctl MJPIOC_QBUF_CAPT failed: %s\n", strerror(errno));
712
// We need to munmap as close don't close mem mappings
713
if(munmap(priv->mmap,priv->mbuf.size))
714
mp_msg(MSGT_TV, MSGL_ERR, "Munmap failed: %s\n",strerror(errno));
717
if(close(priv->video_fd))
718
mp_msg(MSGT_TV, MSGL_ERR, "Close tv failed: %s\n",strerror(errno));
720
audio_in_uninit(&priv->audio_in);
722
if (priv->video_ringbuffer) {
724
for (i = 0; i < priv->video_buffer_size_current; i++) {
725
free(priv->video_ringbuffer[i]);
727
free(priv->video_ringbuffer);
730
if (priv->video_timebuffer)
731
free(priv->video_timebuffer);
732
if (priv->video_avg_buffer)
733
free(priv->video_avg_buffer);
734
if (!tv_param_noaudio) {
735
if (priv->audio_ringbuffer)
736
free(priv->audio_ringbuffer);
737
if (priv->audio_skew_buffer)
738
free(priv->audio_skew_buffer);
744
static int get_capture_buffer_size(priv_t *priv)
748
if (tv_param_buffer_size >= 0) {
749
bufsize = tv_param_buffer_size*1024*1024;
751
#ifdef HAVE_SYS_SYSINFO_H
755
if (si.totalram<2*1024*1024) {
758
bufsize = si.totalram/2;
761
bufsize = 16*1024*1024;
765
cnt = bufsize/(priv->height*priv->bytesperline);
766
if (cnt < 2) cnt = 2;
771
static int start(priv_t *priv)
774
int bytes_per_sample;
776
if (ioctl(priv->video_fd, VIDIOCGPICT, &priv->picture) == -1)
778
mp_msg(MSGT_TV, MSGL_ERR, "ioctl get picture failed: %s\n", strerror(errno));
782
priv->picture.palette = format2palette(priv->format);
783
priv->picture.depth = palette2depth(priv->picture.palette);
785
if (priv->format != IMGFMT_BGR15) {
786
priv->bytesperline = priv->width * priv->picture.depth / 8;
788
priv->bytesperline = priv->width * 2;
791
mp_msg(MSGT_TV, MSGL_V, "Picture values:\n");
792
mp_msg(MSGT_TV, MSGL_V, " Depth: %d, Palette: %s (Format: %s)\n", priv->picture.depth,
793
PALETTE(priv->picture.palette), vo_format_name(priv->format));
794
mp_msg(MSGT_TV, MSGL_V, " Brightness: %d, Hue: %d, Colour: %d, Contrast: %d\n",
795
priv->picture.brightness, priv->picture.hue,
796
priv->picture.colour, priv->picture.contrast);
799
if (ioctl(priv->video_fd, VIDIOCSPICT, &priv->picture) == -1)
801
mp_msg(MSGT_TV, MSGL_ERR, "ioctl set picture failed: %s\n", strerror(errno));
805
if ( !tv_param_mjpeg )
807
priv->nbuf = priv->mbuf.frames;
808
for (i=0; i < priv->nbuf; i++)
810
priv->buf[i].format = priv->picture.palette;
811
priv->buf[i].frame = i;
812
priv->buf[i].width = priv->width;
813
priv->buf[i].height = priv->height;
814
mp_msg(MSGT_TV, MSGL_DBG2, "buffer: %d => %p\n", i, &priv->buf[i]);
820
struct video_play_mode pmode;
822
pmode.mode = VID_PLAY_NORMAL;
825
if (ioctl(priv->video_fd, VIDIOCSPLAYMODE, &pmode) == -1)
827
mp_msg(MSGT_TV, MSGL_ERR, "ioctl set play mode failed: %s\n", strerror(errno));
835
struct video_window win;
839
win.width = priv->width;
840
win.height = priv->height;
845
ioctl(priv->video_fd, VIDIOCSWIN, &win);
848
// initialize video capture
849
if (ioctl(priv->video_fd, VIDIOCCAPTURE, &one) == -1)
851
mp_msg(MSGT_TV, MSGL_ERR, "FATAL: ioctl ccapture failed: %s\n", strerror(errno));
856
/* setup audio parameters */
857
if (!tv_param_noaudio) {
858
setup_audio_buffer_sizes(priv);
859
bytes_per_sample = priv->audio_in.bytes_per_sample;
860
priv->audio_skew_buffer = (long long*)malloc(sizeof(long long)*priv->aud_skew_cnt);
861
if (!priv->audio_skew_buffer) {
862
mp_msg(MSGT_TV, MSGL_ERR, "cannot allocate skew buffer: %s\n", strerror(errno));
866
priv->audio_ringbuffer = (unsigned char*)malloc(priv->audio_in.blocksize*priv->audio_buffer_size);
867
if (!priv->audio_ringbuffer) {
868
mp_msg(MSGT_TV, MSGL_ERR, "cannot allocate audio buffer: %s\n", strerror(errno));
872
priv->audio_secs_per_block = (double)priv->audio_in.blocksize/(priv->audio_in.samplerate
873
*priv->audio_in.channels
875
priv->audio_head = 0;
876
priv->audio_tail = 0;
878
priv->audio_drop = 0;
879
priv->audio_skew = 0;
880
priv->audio_skew_total = 0;
881
priv->audio_recv_blocks_total = 0;
882
priv->audio_sent_blocks_total = 0;
885
/* setup video parameters */
886
if (priv->immediate_mode) {
887
priv->video_buffer_size_max = VID_BUF_SIZE_IMMEDIATE;
889
priv->video_buffer_size_max = get_capture_buffer_size(priv);
891
priv->video_buffer_size_current = 0;
893
if (!tv_param_noaudio) {
894
if (priv->video_buffer_size_max < 3.0*priv->fps*priv->audio_secs_per_block) {
895
mp_msg(MSGT_TV, MSGL_ERR, "Video buffer shorter than 3 times audio frame duration.\n"
896
"You will probably experience heavy framedrops.\n");
900
mp_msg(MSGT_TV, MSGL_V, "Using a ring buffer for maximum %d frames, %d MB total size.\n",
901
priv->video_buffer_size_max,
902
priv->video_buffer_size_max*priv->height*priv->bytesperline/(1024*1024));
904
priv->video_ringbuffer = (unsigned char**)malloc(priv->video_buffer_size_max*sizeof(unsigned char*));
905
if (!priv->video_ringbuffer) {
906
mp_msg(MSGT_TV, MSGL_ERR, "cannot allocate video buffer: %s\n", strerror(errno));
909
for (i = 0; i < priv->video_buffer_size_max; i++)
910
priv->video_ringbuffer[i] = NULL;
912
priv->video_timebuffer = (long long*)malloc(sizeof(long long) * priv->video_buffer_size_max);
913
if (!priv->video_timebuffer) {
914
mp_msg(MSGT_TV, MSGL_ERR, "cannot allocate time buffer: %s\n", strerror(errno));
917
priv->video_avg_buffer = (long long*)malloc(sizeof(long long) * VIDEO_AVG_BUFFER_SIZE);
918
if (!priv->video_avg_buffer) {
919
mp_msg(MSGT_TV, MSGL_ERR, "cannot allocate period buffer: %s\n", strerror(errno));
922
priv->video_interval_sum = (1e6/priv->fps)*VIDEO_AVG_BUFFER_SIZE;
923
for (i = 0; i < VIDEO_AVG_BUFFER_SIZE; i++) {
924
priv->video_avg_buffer[i] = 1e6/priv->fps;
927
priv->video_avg_ptr = 0;
929
priv->video_head = 0;
930
priv->video_tail = 0;
934
if (priv->capability.audios) {
936
if (tv_param_volume >= 0)
937
priv->audio[priv->audio_id].volume = tv_param_volume;
938
if (tv_param_bass >= 0)
939
priv->audio[priv->audio_id].bass = tv_param_bass;
940
if (tv_param_treble >= 0)
941
priv->audio[priv->audio_id].treble = tv_param_treble;
942
if (tv_param_balance >= 0)
943
priv->audio[priv->audio_id].balance = tv_param_balance;
944
priv->audio[priv->audio_id].flags &= ~VIDEO_AUDIO_MUTE;
945
mp_msg(MSGT_TV, MSGL_V, "Enabling tv audio. Requested setup is:\n");
946
mp_msg(MSGT_TV, MSGL_V, "id=%d vol=%d bass=%d treble=%d balance=%d mode=%s",
948
priv->audio[priv->audio_id].volume, priv->audio[priv->audio_id].bass, priv->audio[priv->audio_id].treble,
949
priv->audio[priv->audio_id].balance, audio_mode2name(priv->audio[priv->audio_id].mode));
950
mp_msg(MSGT_TV, MSGL_V, " chan=%d\n", priv->audio_channels[priv->audio_id]);
951
ioctl(priv->video_fd, VIDIOCSAUDIO, &priv->audio[priv->audio_id]);
954
/* launch capture threads */
956
if (!tv_param_noaudio) {
957
pthread_mutex_init(&priv->audio_starter, NULL);
958
pthread_mutex_init(&priv->skew_mutex, NULL);
959
pthread_mutex_lock(&priv->audio_starter);
960
pthread_create(&priv->audio_grabber_thread, NULL, audio_grabber, priv);
962
pthread_mutex_init(&priv->video_buffer_mutex, NULL);
963
/* we'll launch the video capture later, when a first request for a frame arrives */
968
// 2nd order polynomial with p(-100)=0, p(100)=65535, p(0)=y0
969
static int poly(int x, int y0)
971
return ((65535-2*y0)*x*x+6553500*x+20000*y0)/20000;
974
static int control(priv_t *priv, int cmd, void *arg)
976
mp_msg(MSGT_TV, MSGL_DBG2, "\ndebug: control(priv=%p, cmd=%d, arg=%p)\n",
980
/* ========== GENERIC controls =========== */
981
case TVI_CONTROL_IS_VIDEO:
983
if (priv->capability.type & VID_TYPE_CAPTURE)
984
return(TVI_CONTROL_TRUE);
985
return(TVI_CONTROL_FALSE);
987
case TVI_CONTROL_IS_AUDIO:
988
if (tv_param_force_audio) return(TVI_CONTROL_TRUE);
989
if (priv->channels[priv->act_channel].flags & VIDEO_VC_AUDIO)
991
return(TVI_CONTROL_TRUE);
993
return(TVI_CONTROL_FALSE);
994
case TVI_CONTROL_IS_TUNER:
996
// if (priv->capability.type & VID_TYPE_TUNER)
997
if (priv->channels[priv->act_channel].flags & VIDEO_VC_TUNER)
998
return(TVI_CONTROL_TRUE);
999
return(TVI_CONTROL_FALSE);
1002
/* ========== VIDEO controls =========== */
1003
case TVI_CONTROL_VID_GET_FORMAT:
1005
int output_fmt = -1;
1007
output_fmt = priv->format;
1008
if ( tv_param_mjpeg )
1010
mp_msg(MSGT_TV, MSGL_INFO, " MJP: setting sh_video->format to mjpg\n");
1011
output_fmt = 0x47504a4d;
1012
output_fmt = 0x67706a6d;
1013
*(int *)arg = output_fmt;
1014
mp_msg(MSGT_TV, MSGL_V, "Output format: %s\n", "mjpg");
1018
*(int *)arg = output_fmt;
1019
mp_msg(MSGT_TV, MSGL_V, "Output format: %s\n", vo_format_name(output_fmt));
1021
return(TVI_CONTROL_TRUE);
1023
case TVI_CONTROL_VID_SET_FORMAT:
1024
priv->format = *(int *)arg;
1025
// !HACK! v4l uses BGR format instead of RGB
1026
// and we have to correct this. Fortunately,
1027
// tv.c reads later the format back so we
1028
// can persuade it to use what we want.
1029
if (IMGFMT_IS_RGB(priv->format)) {
1030
priv->format &= ~IMGFMT_RGB_MASK;
1031
priv->format |= IMGFMT_BGR;
1033
return(TVI_CONTROL_TRUE);
1034
case TVI_CONTROL_VID_GET_PLANES:
1035
*(int *)arg = 1; /* FIXME, also not needed at this time */
1036
return(TVI_CONTROL_TRUE);
1037
case TVI_CONTROL_VID_GET_BITS:
1038
*(int *)arg = palette2depth(format2palette(priv->format));
1039
return(TVI_CONTROL_TRUE);
1040
case TVI_CONTROL_VID_GET_WIDTH:
1041
*(int *)arg = priv->width;
1042
return(TVI_CONTROL_TRUE);
1043
case TVI_CONTROL_VID_CHK_WIDTH:
1045
int req_width = *(int *)arg;
1047
mp_msg(MSGT_TV, MSGL_V, "Requested width: %d\n", req_width);
1048
if ((req_width >= priv->capability.minwidth) &&
1049
(req_width <= priv->capability.maxwidth))
1050
return(TVI_CONTROL_TRUE);
1051
return(TVI_CONTROL_FALSE);
1053
case TVI_CONTROL_VID_SET_WIDTH:
1054
priv->width = *(int *)arg;
1055
return(TVI_CONTROL_TRUE);
1056
case TVI_CONTROL_VID_GET_HEIGHT:
1057
*(int *)arg = priv->height;
1058
return(TVI_CONTROL_TRUE);
1059
case TVI_CONTROL_VID_CHK_HEIGHT:
1061
int req_height = *(int *)arg;
1063
mp_msg(MSGT_TV, MSGL_V, "Requested height: %d\n", req_height);
1064
if ((req_height >= priv->capability.minheight) &&
1065
(req_height <= priv->capability.maxheight))
1066
return(TVI_CONTROL_TRUE);
1067
return(TVI_CONTROL_FALSE);
1069
case TVI_CONTROL_VID_SET_HEIGHT:
1070
priv->height = *(int *)arg;
1071
return(TVI_CONTROL_TRUE);
1072
case TVI_CONTROL_VID_GET_PICTURE:
1073
if (ioctl(priv->video_fd, VIDIOCGPICT, &priv->picture) == -1)
1075
mp_msg(MSGT_TV, MSGL_ERR, "ioctl get picture failed: %s\n", strerror(errno));
1076
return(TVI_CONTROL_FALSE);
1078
return(TVI_CONTROL_TRUE);
1079
case TVI_CONTROL_VID_SET_PICTURE:
1080
if (ioctl(priv->video_fd, VIDIOCSPICT, &priv->picture) == -1)
1082
mp_msg(MSGT_TV, MSGL_ERR, "ioctl get picture failed: %s\n", strerror(errno));
1083
return(TVI_CONTROL_FALSE);
1085
return(TVI_CONTROL_TRUE);
1086
case TVI_CONTROL_VID_SET_BRIGHTNESS:
1087
priv->picture.brightness = 65535*(*(int *)arg+100)/200;
1088
control(priv, TVI_CONTROL_VID_SET_PICTURE, 0);
1089
return(TVI_CONTROL_TRUE);
1090
case TVI_CONTROL_VID_SET_HUE:
1091
priv->picture.hue = 65535*(*(int *)arg+100)/200;
1092
control(priv, TVI_CONTROL_VID_SET_PICTURE, 0);
1093
return(TVI_CONTROL_TRUE);
1094
case TVI_CONTROL_VID_SET_SATURATION:
1095
priv->picture.colour = 65535*(*(int *)arg+100)/200;
1096
control(priv, TVI_CONTROL_VID_SET_PICTURE, 0);
1097
return(TVI_CONTROL_TRUE);
1098
case TVI_CONTROL_VID_SET_CONTRAST:
1099
priv->picture.contrast = poly(*(int *)arg, 24576);
1100
control(priv, TVI_CONTROL_VID_SET_PICTURE, 0);
1101
return(TVI_CONTROL_TRUE);
1102
case TVI_CONTROL_VID_GET_FPS:
1103
*(float *)arg=priv->fps;
1104
return(TVI_CONTROL_TRUE);
1106
/* ========== TUNER controls =========== */
1107
case TVI_CONTROL_TUN_GET_FREQ:
1111
if (ioctl(priv->video_fd, VIDIOCGFREQ, &freq) == -1)
1113
mp_msg(MSGT_TV, MSGL_ERR, "ioctl get freq failed: %s\n", strerror(errno));
1114
return(TVI_CONTROL_FALSE);
1117
/* tuner uses khz not mhz ! */
1118
// if (priv->tuner.flags & VIDEO_TUNER_LOW)
1120
*(unsigned long *)arg = freq;
1121
return(TVI_CONTROL_TRUE);
1123
case TVI_CONTROL_TUN_SET_FREQ:
1125
/* argument is in MHz ! */
1126
unsigned long freq = *(unsigned long *)arg;
1128
if (priv->capability.audios) {
1129
priv->audio[priv->audio_id].flags |= VIDEO_AUDIO_MUTE;
1130
ioctl(priv->video_fd, VIDIOCSAUDIO, &priv->audio[priv->audio_id]);
1133
mp_msg(MSGT_TV, MSGL_V, "requested frequency: %.3f\n", (float)freq/16);
1135
/* tuner uses khz not mhz ! */
1136
// if (priv->tuner.flags & VIDEO_TUNER_LOW)
1138
// mp_msg(MSGT_TV, MSGL_V, " requesting from driver: freq=%.3f\n", (float)freq/16);
1139
if (ioctl(priv->video_fd, VIDIOCSFREQ, &freq) == -1)
1141
mp_msg(MSGT_TV, MSGL_ERR, "ioctl set freq failed: %s\n", strerror(errno));
1142
return(TVI_CONTROL_FALSE);
1144
usleep(100000); // wait to supress noise during switching
1146
if (priv->capability.audios) {
1147
priv->audio[priv->audio_id].flags &= ~VIDEO_AUDIO_MUTE;
1148
ioctl(priv->video_fd, VIDIOCSAUDIO, &priv->audio[priv->audio_id]);
1151
return(TVI_CONTROL_TRUE);
1153
case TVI_CONTROL_TUN_GET_TUNER:
1155
if (ioctl(priv->video_fd, VIDIOCGTUNER, &priv->tuner) == -1)
1157
mp_msg(MSGT_TV, MSGL_ERR, "ioctl get tuner failed: %s\n", strerror(errno));
1158
return(TVI_CONTROL_FALSE);
1161
mp_msg(MSGT_TV, MSGL_V, "Tuner (%s) range: %lu -> %lu\n", priv->tuner.name,
1162
priv->tuner.rangelow, priv->tuner.rangehigh);
1163
return(TVI_CONTROL_TRUE);
1165
case TVI_CONTROL_TUN_SET_TUNER:
1167
if (ioctl(priv->video_fd, VIDIOCSTUNER, &priv->tuner) == -1)
1169
mp_msg(MSGT_TV, MSGL_ERR, "ioctl set tuner failed: %s\n", strerror(errno));
1170
return(TVI_CONTROL_FALSE);
1172
return(TVI_CONTROL_TRUE);
1174
case TVI_CONTROL_TUN_SET_NORM:
1176
int req_mode = *(int *)arg;
1178
if ((req_mode != TV_NORM_PAL) && (req_mode != TV_NORM_NTSC) && (req_mode != TV_NORM_SECAM)
1179
&& (req_mode != TV_NORM_PALNC) && (req_mode != TV_NORM_PALM) && (req_mode != TV_NORM_PALN)
1180
&& (req_mode != TV_NORM_NTSCJP)) {
1181
mp_msg(MSGT_TV, MSGL_ERR, "Unknown norm!\n");
1182
return(TVI_CONTROL_FALSE);
1185
if (priv->channels[priv->act_channel].flags & VIDEO_VC_TUNER) {
1188
control(priv, TVI_CONTROL_TUN_GET_TUNER, 0);
1189
if (((req_mode == TV_NORM_PAL
1190
|| req_mode == TV_NORM_PALNC
1191
|| req_mode == TV_NORM_PALN) && !(priv->tuner.flags & VIDEO_TUNER_PAL)) ||
1192
((req_mode == TV_NORM_NTSC
1193
|| req_mode == TV_NORM_NTSCJP
1194
|| req_mode == TV_NORM_PALM) && !(priv->tuner.flags & VIDEO_TUNER_NTSC)) ||
1195
((req_mode == TV_NORM_SECAM) && !(priv->tuner.flags & VIDEO_TUNER_SECAM)))
1197
mp_msg(MSGT_TV, MSGL_ERR, "Tuner isn't capable to set norm!\n");
1198
return(TVI_CONTROL_FALSE);
1201
prev_mode = priv->tuner.mode;
1207
priv->tuner.mode = VIDEO_MODE_PAL;
1210
case TV_NORM_NTSCJP:
1212
priv->tuner.mode = VIDEO_MODE_NTSC;
1215
priv->tuner.mode = VIDEO_MODE_SECAM;
1219
if (control(priv, TVI_CONTROL_TUN_SET_TUNER, &priv->tuner) != TVI_CONTROL_TRUE) {
1220
// norm setting failed, but maybe it's only because it's fixed
1221
if (priv->tuner.mode != prev_mode) return(TVI_CONTROL_FALSE); // no it really failed
1228
priv->channels[priv->act_channel].norm = VIDEO_MODE_PAL;
1231
priv->channels[priv->act_channel].norm = VIDEO_MODE_NTSC;
1234
priv->channels[priv->act_channel].norm = VIDEO_MODE_SECAM;
1237
priv->channels[priv->act_channel].norm = 3;
1240
priv->channels[priv->act_channel].norm = 4;
1243
priv->channels[priv->act_channel].norm = 5;
1245
case TV_NORM_NTSCJP:
1246
priv->channels[priv->act_channel].norm = 6;
1249
if (ioctl(priv->video_fd, VIDIOCSCHAN, &priv->channels[priv->act_channel]) == -1)
1251
mp_msg(MSGT_TV, MSGL_ERR, "ioctl set chan failed: %s\n", strerror(errno));
1252
return(TVI_CONTROL_FALSE);
1255
if (ioctl(priv->video_fd, VIDIOCGCAP, &priv->capability) == -1) {
1256
mp_msg(MSGT_TV, MSGL_ERR, "ioctl get capabilites failed: %s\n", strerror(errno));
1257
return(TVI_CONTROL_FALSE);
1260
if(req_mode == TV_NORM_PAL || req_mode == TV_NORM_SECAM || req_mode == TV_NORM_PALN || req_mode == TV_NORM_PALNC) {
1261
priv->fps = PAL_FPS;
1264
if(req_mode == TV_NORM_NTSC || req_mode == TV_NORM_NTSCJP || req_mode == TV_NORM_PALM) {
1265
priv->fps = NTSC_FPS;
1268
if(priv->height > priv->capability.maxheight) {
1269
priv->height = priv->capability.maxheight;
1272
if(priv->width > priv->capability.maxwidth) {
1273
priv->width = priv->capability.maxwidth;
1276
return(TVI_CONTROL_TRUE);
1278
case TVI_CONTROL_TUN_GET_NORM:
1280
*(int *)arg = priv->tuner.mode;
1282
return(TVI_CONTROL_TRUE);
1285
/* ========== AUDIO controls =========== */
1286
case TVI_CONTROL_AUD_GET_FORMAT:
1288
*(int *)arg = AF_FORMAT_S16_LE;
1289
return(TVI_CONTROL_TRUE);
1291
case TVI_CONTROL_AUD_GET_CHANNELS:
1293
*(int *)arg = priv->audio_in.channels;
1294
return(TVI_CONTROL_TRUE);
1296
case TVI_CONTROL_AUD_GET_SAMPLERATE:
1298
*(int *)arg = priv->audio_in.samplerate;
1299
return(TVI_CONTROL_TRUE);
1301
case TVI_CONTROL_AUD_GET_SAMPLESIZE:
1303
*(int *)arg = priv->audio_in.bytes_per_sample;
1304
return(TVI_CONTROL_TRUE);
1306
case TVI_CONTROL_AUD_SET_SAMPLERATE:
1308
if (audio_in_set_samplerate(&priv->audio_in, *(int *)arg) < 0) return TVI_CONTROL_FALSE;
1309
setup_audio_buffer_sizes(priv);
1310
return(TVI_CONTROL_TRUE);
1312
/* ========== SPECIFIC controls =========== */
1313
case TVI_CONTROL_SPC_GET_INPUT:
1315
int req_chan = *(int *)arg;
1318
for (i = 0; i < priv->capability.channels; i++)
1320
if (priv->channels[i].channel == req_chan)
1324
priv->act_channel = i;
1326
if (ioctl(priv->video_fd, VIDIOCGCHAN, &priv->channels[i]) == -1)
1328
mp_msg(MSGT_TV, MSGL_ERR, "ioctl get channel failed: %s\n", strerror(errno));
1329
return(TVI_CONTROL_FALSE);
1331
return(TVI_CONTROL_TRUE);
1334
case TVI_CONTROL_SPC_SET_INPUT:
1336
struct video_channel chan;
1337
int req_chan = *(int *)arg;
1340
if (req_chan >= priv->capability.channels)
1342
mp_msg(MSGT_TV, MSGL_ERR, "Invalid input requested: %d, valid: 0-%d\n",
1343
req_chan, priv->capability.channels - 1);
1344
return(TVI_CONTROL_FALSE);
1347
for (i = 0; i < priv->capability.channels; i++)
1349
if (priv->channels[i].channel == req_chan)
1350
chan = priv->channels[i];
1353
if (ioctl(priv->video_fd, VIDIOCSCHAN, &chan) == -1)
1355
mp_msg(MSGT_TV, MSGL_ERR, "ioctl set chan failed: %s\n", strerror(errno));
1356
return(TVI_CONTROL_FALSE);
1358
mp_msg(MSGT_TV, MSGL_INFO, "Using input '%s'\n", chan.name);
1360
priv->act_channel = i;
1362
/* update tuner state */
1363
// if (priv->capability.type & VID_TYPE_TUNER)
1364
if (priv->channels[priv->act_channel].flags & VIDEO_VC_TUNER)
1365
control(priv, TVI_CONTROL_TUN_GET_TUNER, 0);
1367
/* update local channel list */
1368
control(priv, TVI_CONTROL_SPC_GET_INPUT, &req_chan);
1369
return(TVI_CONTROL_TRUE);
1370
case TVI_CONTROL_IMMEDIATE:
1371
priv->immediate_mode = 1;
1372
return(TVI_CONTROL_TRUE);
1376
return(TVI_CONTROL_UNKNOWN);
1379
// copies a video frame
1380
// for RGB (i.e. BGR in mplayer) flips the image upside down
1381
// for YV12 swaps the 2nd and 3rd plane
1382
static inline void copy_frame(priv_t *priv, unsigned char *dest, unsigned char *source)
1385
unsigned char *sptr;
1387
// YV12 uses VIDEO_PALETTE_YUV420P, but the planes are swapped
1388
if (priv->format == IMGFMT_YV12) {
1389
memcpy(dest, source, priv->width * priv->height);
1390
memcpy(dest+priv->width * priv->height*5/4, source+priv->width * priv->height, priv->width * priv->height/4);
1391
memcpy(dest+priv->width * priv->height, source+priv->width * priv->height*5/4, priv->width * priv->height/4);
1395
switch (priv->picture.palette) {
1396
case VIDEO_PALETTE_RGB24:
1397
case VIDEO_PALETTE_RGB32:
1398
case VIDEO_PALETTE_RGB555:
1399
case VIDEO_PALETTE_RGB565:
1400
sptr = source + (priv->height-1)*priv->bytesperline;
1401
for (i = 0; i < priv->height; i++) {
1402
memcpy(dest, sptr, priv->bytesperline);
1403
dest += priv->bytesperline;
1404
sptr -= priv->bytesperline;
1407
case VIDEO_PALETTE_UYVY:
1408
case VIDEO_PALETTE_YUV420P:
1410
memcpy(dest, source, priv->bytesperline * priv->height);
1415
// maximum skew change, in frames
1416
#define MAX_SKEW_DELTA 0.6
1417
static void *video_grabber(void *data)
1419
#define MAXTOL (priv->nbuf)
1420
priv_t *priv = (priv_t*)data;
1421
struct timeval curtime;
1422
long long skew, prev_skew, xskew, interval, prev_interval;
1429
/* start the capture process */
1431
if ( tv_param_mjpeg )
1433
mp_msg(MSGT_TV, MSGL_INFO, " MJP: gonna capture ! \n");
1434
for (i=0; i < priv->nbuf; i++) {
1436
if (ioctl(priv->video_fd, MJPIOC_QBUF_CAPT, &num) < 0)
1438
mp_msg(MSGT_TV, MSGL_ERR,
1439
"\n MJP: ioctl MJPIOC_QBUF_CAPT b failed: %s\n", strerror(errno));
1445
for (i=0; i < priv->nbuf; i++) {
1446
if (ioctl(priv->video_fd, VIDIOCMCAPTURE, &priv->buf[i]) == -1)
1448
mp_msg(MSGT_TV, MSGL_ERR, "\nioctl mcapture failed: %s\n", strerror(errno));
1453
gettimeofday(&curtime, NULL);
1454
priv->starttime = (long long)1e6*curtime.tv_sec + curtime.tv_usec;
1455
priv->audio_skew_measure_time = 0;
1456
pthread_mutex_unlock(&priv->audio_starter);
1466
for (framecount = 0; !priv->shutdown;)
1468
for (i = 0; i < priv->nbuf && !priv->shutdown; i++, framecount++) {
1470
if (priv->immediate_mode) {
1471
while (priv->video_cnt == priv->video_buffer_size_max) {
1473
if (priv->shutdown) {
1481
if ( tv_param_mjpeg )
1483
while (ioctl(priv->video_fd, MJPIOC_SYNC, &priv->buf[frame].frame) < 0 &&
1484
(errno == EAGAIN || errno == EINTR));
1489
while (ioctl(priv->video_fd, VIDIOCSYNC, &priv->buf[frame].frame) < 0 &&
1490
(errno == EAGAIN || errno == EINTR));
1492
mp_dbg(MSGT_TV, MSGL_DBG3, "\npicture sync failed\n");
1494
gettimeofday(&curtime, NULL);
1495
if (!priv->immediate_mode) {
1496
interval = (long long)1e6*curtime.tv_sec + curtime.tv_usec - priv->starttime;
1498
interval = (long long)1e6*framecount/priv->fps;
1501
if (!priv->immediate_mode) {
1502
long long period, orig_interval;
1504
if (tolerance == 0) {
1505
if (interval - prev_interval == 0) {
1506
mp_msg(MSGT_TV, MSGL_V, "\nvideo capture thread: frame delta = 0\n");
1507
} else if ((interval - prev_interval < (long long)0.85e6/priv->fps)
1508
|| (interval - prev_interval > (long long)1.15e6/priv->fps) ) {
1509
mp_msg(MSGT_TV, MSGL_V, "\nvideo capture thread: frame delta ~ %.1lf fps\n",
1510
(double)1e6/(interval - prev_interval));
1514
// correct the rate fluctuations on a small scale
1515
orig_interval = interval;
1516
period = priv->video_interval_sum/VIDEO_AVG_BUFFER_SIZE;
1517
if (interval - prev_interval > 105*period/100) {
1518
if (tolerance > 0) {
1519
mp_msg(MSGT_TV, MSGL_DBG3, "correcting timestamp\n");
1520
interval = prev_interval + priv->video_interval_sum/VIDEO_AVG_BUFFER_SIZE;
1523
mp_msg(MSGT_TV, MSGL_DBG3, "bad - frames were dropped\n");
1527
if (tolerance < MAXTOL) {
1528
mp_msg(MSGT_TV, MSGL_DBG3, "fluctuation overcome\n");
1533
priv->video_interval_sum -= priv->video_avg_buffer[priv->video_avg_ptr];
1534
priv->video_avg_buffer[priv->video_avg_ptr++] = orig_interval-prev_interval;
1535
priv->video_interval_sum += orig_interval-prev_interval;
1536
if (priv->video_avg_ptr >= VIDEO_AVG_BUFFER_SIZE) priv->video_avg_ptr = 0;
1538
// fprintf(stderr, "fps: %lf\n", (double)1e6*VIDEO_AVG_BUFFER_SIZE/priv->video_interval_sum);
1540
// interpolate the skew in time
1541
pthread_mutex_lock(&priv->skew_mutex);
1542
xskew = priv->audio_skew + (interval - priv->audio_skew_measure_time)*priv->audio_skew_factor;
1543
pthread_mutex_unlock(&priv->skew_mutex);
1544
// correct extreme skew changes to avoid (especially) moving backwards in time
1545
if (xskew - prev_skew > (interval - prev_interval)*MAX_SKEW_DELTA) {
1546
skew = prev_skew + (interval - prev_interval)*MAX_SKEW_DELTA;
1547
} else if (xskew - prev_skew < -(interval - prev_interval)*MAX_SKEW_DELTA) {
1548
skew = prev_skew - (interval - prev_interval)*MAX_SKEW_DELTA;
1554
mp_msg(MSGT_TV, MSGL_DBG3, "\nfps = %lf, interval = %lf, a_skew = %f, corr_skew = %f\n",
1555
(interval != prev_interval) ? (double)1e6/(interval - prev_interval) : -1,
1556
(double)1e-6*interval, (double)1e-6*xskew, (double)1e-6*skew);
1557
mp_msg(MSGT_TV, MSGL_DBG3, "vcnt = %d, acnt = %d\n", priv->video_cnt, priv->audio_cnt);
1560
prev_interval = interval;
1562
/* allocate a new buffer, if needed */
1563
pthread_mutex_lock(&priv->video_buffer_mutex);
1564
if (priv->video_buffer_size_current < priv->video_buffer_size_max) {
1565
if (priv->video_cnt == priv->video_buffer_size_current) {
1566
unsigned char *newbuf = (unsigned char*)malloc(priv->bytesperline * priv->height);
1568
memmove(priv->video_ringbuffer+priv->video_tail+1, priv->video_ringbuffer+priv->video_tail,
1569
(priv->video_buffer_size_current-priv->video_tail)*sizeof(unsigned char *));
1570
memmove(priv->video_timebuffer+priv->video_tail+1, priv->video_timebuffer+priv->video_tail,
1571
(priv->video_buffer_size_current-priv->video_tail)*sizeof(long long));
1572
priv->video_ringbuffer[priv->video_tail] = newbuf;
1573
if ((priv->video_head >= priv->video_tail) && (priv->video_cnt > 0)) priv->video_head++;
1574
priv->video_buffer_size_current++;
1578
pthread_mutex_unlock(&priv->video_buffer_mutex);
1580
if (priv->video_cnt == priv->video_buffer_size_current) {
1581
if (!priv->immediate_mode) {
1582
mp_msg(MSGT_TV, MSGL_ERR, "\nvideo buffer full - dropping frame\n");
1585
if (priv->immediate_mode) {
1586
priv->video_timebuffer[priv->video_tail] = interval;
1588
// compensate for audio skew
1589
// negative skew => there are more audio samples, increase interval
1590
// positive skew => less samples, shorten the interval
1591
priv->video_timebuffer[priv->video_tail] = interval - skew;
1594
if ( tv_param_mjpeg )
1595
copy_frame(priv, priv->video_ringbuffer[priv->video_tail],
1596
priv->mmap+(priv->mjpeg_bufsize)*i);
1598
copy_frame(priv, priv->video_ringbuffer[priv->video_tail], priv->mmap+priv->mbuf.offsets[frame]);
1599
priv->video_tail = (priv->video_tail+1)%priv->video_buffer_size_current;
1603
if ( tv_param_mjpeg )
1606
if (ioctl(priv->video_fd, MJPIOC_QBUF_CAPT, &num) < 0)
1608
mp_msg(MSGT_TV, MSGL_ERR, "\n MJP: ioctl MJPIOC_QBUF_CAPT end failed: %s\n",
1615
if (ioctl(priv->video_fd, VIDIOCMCAPTURE, &priv->buf[frame]) == -1)
1617
mp_msg(MSGT_TV, MSGL_ERR, "\nioctl mcapture failed: %s\n", strerror(errno));
1625
mp_msg(MSGT_TV, MSGL_INFO, " MJP: returning! \n");
1629
static double grab_video_frame(priv_t *priv, char *buffer, int len)
1634
pthread_create(&priv->video_grabber_thread, NULL, video_grabber, priv);
1638
while (priv->video_cnt == 0) {
1642
pthread_mutex_lock(&priv->video_buffer_mutex);
1643
interval = (double)priv->video_timebuffer[priv->video_head]*1e-6;
1644
memcpy(buffer, priv->video_ringbuffer[priv->video_head], len);
1646
priv->video_head = (priv->video_head+1)%priv->video_buffer_size_current;
1647
pthread_mutex_unlock(&priv->video_buffer_mutex);
1652
static int get_video_framesize(priv_t *priv)
1654
return(priv->bytesperline * priv->height);
1657
static void *audio_grabber(void *data)
1659
priv_t *priv = (priv_t*)data;
1661
int i, audio_skew_ptr = 0;
1662
long long current_time, prev_skew = 0;
1664
pthread_mutex_lock(&priv->audio_starter);
1666
audio_in_start_capture(&priv->audio_in);
1667
for (i = 0; i < priv->aud_skew_cnt; i++)
1668
priv->audio_skew_buffer[i] = 0;
1670
for (; !priv->shutdown;)
1672
if (audio_in_read_chunk(&priv->audio_in, priv->audio_ringbuffer+priv->audio_tail*priv->audio_in.blocksize) < 0)
1675
gettimeofday(&tv, NULL);
1677
priv->audio_recv_blocks_total++;
1678
current_time = (long long)1e6*tv.tv_sec + tv.tv_usec - priv->starttime;
1680
priv->audio_skew_total -= priv->audio_skew_buffer[audio_skew_ptr];
1681
priv->audio_skew_buffer[audio_skew_ptr] = current_time
1682
- 1e6*priv->audio_secs_per_block*priv->audio_recv_blocks_total;
1683
priv->audio_skew_total += priv->audio_skew_buffer[audio_skew_ptr];
1684
audio_skew_ptr = (audio_skew_ptr+1) % priv->aud_skew_cnt;
1686
pthread_mutex_lock(&priv->skew_mutex);
1687
// linear interpolation - here we interpolate current skew value
1688
// from the moving average, which we expect to be in the middle
1690
if (priv->audio_recv_blocks_total > priv->aud_skew_cnt) {
1691
priv->audio_skew = priv->audio_skew_total/priv->aud_skew_cnt;
1692
priv->audio_skew += (priv->audio_skew*priv->aud_skew_cnt)/(2*priv->audio_recv_blocks_total-priv->aud_skew_cnt);
1694
// this smoothes the evolution of audio_skew at startup a bit
1695
priv->audio_skew = ((priv->aud_skew_cnt+priv->audio_recv_blocks_total)*priv->audio_skew_total)/(priv->aud_skew_cnt*priv->audio_recv_blocks_total);
1697
// current skew factor (assuming linearity)
1698
// used for further interpolation in video_grabber
1699
// probably overkill but seems to be necessary for
1700
// stress testing by dropping half of the audio frames ;)
1701
// especially when using ALSA with large block sizes
1702
// where audio_skew remains a long while behind
1703
if ((priv->audio_skew_measure_time != 0) && (current_time - priv->audio_skew_measure_time != 0)) {
1704
priv->audio_skew_factor = (double)(priv->audio_skew-prev_skew)/(current_time - priv->audio_skew_measure_time);
1706
priv->audio_skew_factor = 0.0;
1709
priv->audio_skew_measure_time = current_time;
1710
prev_skew = priv->audio_skew;
1711
pthread_mutex_unlock(&priv->skew_mutex);
1713
if ((priv->audio_tail+1) % priv->audio_buffer_size == priv->audio_head) {
1714
mp_msg(MSGT_TV, MSGL_ERR, "\ntoo bad - dropping audio frame !\n");
1717
priv->audio_tail = (priv->audio_tail+1) % priv->audio_buffer_size;
1724
static double grab_audio_frame(priv_t *priv, char *buffer, int len)
1726
mp_dbg(MSGT_TV, MSGL_DBG2, "grab_audio_frame(priv=%p, buffer=%p, len=%d)\n",
1730
pthread_create(&priv->video_grabber_thread, NULL, video_grabber, priv);
1734
// compensate for dropped audio frames
1735
if (priv->audio_drop && (priv->audio_head == priv->audio_tail)) {
1737
priv->audio_sent_blocks_total++;
1738
memset(buffer, 0, len);
1739
return (double)priv->audio_sent_blocks_total*priv->audio_secs_per_block;
1742
while (priv->audio_head == priv->audio_tail) {
1745
memcpy(buffer, priv->audio_ringbuffer+priv->audio_head*priv->audio_in.blocksize, len);
1746
priv->audio_head = (priv->audio_head+1) % priv->audio_buffer_size;
1748
priv->audio_sent_blocks_total++;
1749
return (double)priv->audio_sent_blocks_total*priv->audio_secs_per_block;
1752
static int get_audio_framesize(priv_t *priv)
1754
return(priv->audio_in.blocksize);