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 *)calloc(priv->capability.channels, sizeof(struct video_channel));
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 *)calloc(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));
804
if ( !tv_param_mjpeg )
806
priv->nbuf = priv->mbuf.frames;
807
for (i=0; i < priv->nbuf; i++)
809
priv->buf[i].format = priv->picture.palette;
810
priv->buf[i].frame = i;
811
priv->buf[i].width = priv->width;
812
priv->buf[i].height = priv->height;
813
mp_msg(MSGT_TV, MSGL_DBG2, "buffer: %d => %p\n", i, &priv->buf[i]);
819
struct video_play_mode pmode;
821
pmode.mode = VID_PLAY_NORMAL;
824
if (ioctl(priv->video_fd, VIDIOCSPLAYMODE, &pmode) == -1)
826
mp_msg(MSGT_TV, MSGL_ERR, "ioctl set play mode failed: %s\n", strerror(errno));
834
struct video_window win;
838
win.width = priv->width;
839
win.height = priv->height;
844
ioctl(priv->video_fd, VIDIOCSWIN, &win);
847
// initialize video capture
848
if (ioctl(priv->video_fd, VIDIOCCAPTURE, &one) == -1)
850
mp_msg(MSGT_TV, MSGL_ERR, "FATAL: ioctl ccapture failed: %s\n", strerror(errno));
855
/* setup audio parameters */
856
if (!tv_param_noaudio) {
857
setup_audio_buffer_sizes(priv);
858
bytes_per_sample = priv->audio_in.bytes_per_sample;
859
priv->audio_skew_buffer = (long long*)calloc(priv->aud_skew_cnt, sizeof(long long));
860
if (!priv->audio_skew_buffer) {
861
mp_msg(MSGT_TV, MSGL_ERR, "cannot allocate skew buffer: %s\n", strerror(errno));
865
priv->audio_ringbuffer = (unsigned char*)calloc(priv->audio_in.blocksize, priv->audio_buffer_size);
866
if (!priv->audio_ringbuffer) {
867
mp_msg(MSGT_TV, MSGL_ERR, "cannot allocate audio buffer: %s\n", strerror(errno));
871
priv->audio_secs_per_block = (double)priv->audio_in.blocksize/(priv->audio_in.samplerate
872
*priv->audio_in.channels
874
priv->audio_head = 0;
875
priv->audio_tail = 0;
877
priv->audio_drop = 0;
878
priv->audio_skew = 0;
879
priv->audio_skew_total = 0;
880
priv->audio_recv_blocks_total = 0;
881
priv->audio_sent_blocks_total = 0;
884
/* setup video parameters */
885
if (priv->immediate_mode) {
886
priv->video_buffer_size_max = VID_BUF_SIZE_IMMEDIATE;
888
priv->video_buffer_size_max = get_capture_buffer_size(priv);
890
priv->video_buffer_size_current = 0;
892
if (!tv_param_noaudio) {
893
if (priv->video_buffer_size_max < 3.0*priv->fps*priv->audio_secs_per_block) {
894
mp_msg(MSGT_TV, MSGL_ERR, "Video buffer shorter than 3 times audio frame duration.\n"
895
"You will probably experience heavy framedrops.\n");
899
mp_msg(MSGT_TV, MSGL_V, "Using a ring buffer for maximum %d frames, %d MB total size.\n",
900
priv->video_buffer_size_max,
901
priv->video_buffer_size_max*priv->height*priv->bytesperline/(1024*1024));
903
priv->video_ringbuffer = (unsigned char**)calloc(priv->video_buffer_size_max, sizeof(unsigned char*));
904
if (!priv->video_ringbuffer) {
905
mp_msg(MSGT_TV, MSGL_ERR, "cannot allocate video buffer: %s\n", strerror(errno));
908
for (i = 0; i < priv->video_buffer_size_max; i++)
909
priv->video_ringbuffer[i] = NULL;
911
priv->video_timebuffer = (long long*)calloc(priv->video_buffer_size_max, sizeof(long long));
912
if (!priv->video_timebuffer) {
913
mp_msg(MSGT_TV, MSGL_ERR, "cannot allocate time buffer: %s\n", strerror(errno));
916
priv->video_avg_buffer = (long long*)malloc(sizeof(long long) * VIDEO_AVG_BUFFER_SIZE);
917
if (!priv->video_avg_buffer) {
918
mp_msg(MSGT_TV, MSGL_ERR, "cannot allocate period buffer: %s\n", strerror(errno));
921
priv->video_interval_sum = (1e6/priv->fps)*VIDEO_AVG_BUFFER_SIZE;
922
for (i = 0; i < VIDEO_AVG_BUFFER_SIZE; i++) {
923
priv->video_avg_buffer[i] = 1e6/priv->fps;
926
priv->video_avg_ptr = 0;
928
priv->video_head = 0;
929
priv->video_tail = 0;
933
if (priv->capability.audios) {
935
if (tv_param_volume >= 0)
936
priv->audio[priv->audio_id].volume = tv_param_volume;
937
if (tv_param_bass >= 0)
938
priv->audio[priv->audio_id].bass = tv_param_bass;
939
if (tv_param_treble >= 0)
940
priv->audio[priv->audio_id].treble = tv_param_treble;
941
if (tv_param_balance >= 0)
942
priv->audio[priv->audio_id].balance = tv_param_balance;
943
priv->audio[priv->audio_id].flags &= ~VIDEO_AUDIO_MUTE;
944
mp_msg(MSGT_TV, MSGL_V, "Enabling tv audio. Requested setup is:\n");
945
mp_msg(MSGT_TV, MSGL_V, "id=%d vol=%d bass=%d treble=%d balance=%d mode=%s",
947
priv->audio[priv->audio_id].volume, priv->audio[priv->audio_id].bass, priv->audio[priv->audio_id].treble,
948
priv->audio[priv->audio_id].balance, audio_mode2name(priv->audio[priv->audio_id].mode));
949
mp_msg(MSGT_TV, MSGL_V, " chan=%d\n", priv->audio_channels[priv->audio_id]);
950
ioctl(priv->video_fd, VIDIOCSAUDIO, &priv->audio[priv->audio_id]);
953
/* launch capture threads */
955
if (!tv_param_noaudio) {
956
pthread_mutex_init(&priv->audio_starter, NULL);
957
pthread_mutex_init(&priv->skew_mutex, NULL);
958
pthread_mutex_lock(&priv->audio_starter);
959
pthread_create(&priv->audio_grabber_thread, NULL, audio_grabber, priv);
961
pthread_mutex_init(&priv->video_buffer_mutex, NULL);
962
/* we'll launch the video capture later, when a first request for a frame arrives */
968
static int control(priv_t *priv, int cmd, void *arg)
970
mp_msg(MSGT_TV, MSGL_DBG2, "\ndebug: control(priv=%p, cmd=%d, arg=%p)\n",
974
/* ========== GENERIC controls =========== */
975
case TVI_CONTROL_IS_VIDEO:
977
if (priv->capability.type & VID_TYPE_CAPTURE)
978
return(TVI_CONTROL_TRUE);
979
return(TVI_CONTROL_FALSE);
981
case TVI_CONTROL_IS_AUDIO:
982
if (tv_param_force_audio) return(TVI_CONTROL_TRUE);
983
if (priv->channels[priv->act_channel].flags & VIDEO_VC_AUDIO)
985
return(TVI_CONTROL_TRUE);
987
return(TVI_CONTROL_FALSE);
988
case TVI_CONTROL_IS_TUNER:
990
// if (priv->capability.type & VID_TYPE_TUNER)
991
if (priv->channels[priv->act_channel].flags & VIDEO_VC_TUNER)
992
return(TVI_CONTROL_TRUE);
993
return(TVI_CONTROL_FALSE);
996
/* ========== VIDEO controls =========== */
997
case TVI_CONTROL_VID_GET_FORMAT:
1001
output_fmt = priv->format;
1002
if ( tv_param_mjpeg )
1004
mp_msg(MSGT_TV, MSGL_INFO, " MJP: setting sh_video->format to mjpg\n");
1005
output_fmt = 0x47504a4d;
1006
output_fmt = 0x67706a6d;
1007
*(int *)arg = output_fmt;
1008
mp_msg(MSGT_TV, MSGL_V, "Output format: %s\n", "mjpg");
1012
*(int *)arg = output_fmt;
1013
mp_msg(MSGT_TV, MSGL_V, "Output format: %s\n", vo_format_name(output_fmt));
1015
return(TVI_CONTROL_TRUE);
1017
case TVI_CONTROL_VID_SET_FORMAT:
1018
priv->format = *(int *)arg;
1019
// !HACK! v4l uses BGR format instead of RGB
1020
// and we have to correct this. Fortunately,
1021
// tv.c reads later the format back so we
1022
// can persuade it to use what we want.
1023
if (IMGFMT_IS_RGB(priv->format)) {
1024
priv->format &= ~IMGFMT_RGB_MASK;
1025
priv->format |= IMGFMT_BGR;
1027
return(TVI_CONTROL_TRUE);
1028
case TVI_CONTROL_VID_GET_PLANES:
1029
*(int *)arg = 1; /* FIXME, also not needed at this time */
1030
return(TVI_CONTROL_TRUE);
1031
case TVI_CONTROL_VID_GET_BITS:
1032
*(int *)arg = palette2depth(format2palette(priv->format));
1033
return(TVI_CONTROL_TRUE);
1034
case TVI_CONTROL_VID_GET_WIDTH:
1035
*(int *)arg = priv->width;
1036
return(TVI_CONTROL_TRUE);
1037
case TVI_CONTROL_VID_CHK_WIDTH:
1039
int req_width = *(int *)arg;
1041
mp_msg(MSGT_TV, MSGL_V, "Requested width: %d\n", req_width);
1042
if ((req_width >= priv->capability.minwidth) &&
1043
(req_width <= priv->capability.maxwidth))
1044
return(TVI_CONTROL_TRUE);
1045
return(TVI_CONTROL_FALSE);
1047
case TVI_CONTROL_VID_SET_WIDTH:
1048
priv->width = *(int *)arg;
1049
return(TVI_CONTROL_TRUE);
1050
case TVI_CONTROL_VID_GET_HEIGHT:
1051
*(int *)arg = priv->height;
1052
return(TVI_CONTROL_TRUE);
1053
case TVI_CONTROL_VID_CHK_HEIGHT:
1055
int req_height = *(int *)arg;
1057
mp_msg(MSGT_TV, MSGL_V, "Requested height: %d\n", req_height);
1058
if ((req_height >= priv->capability.minheight) &&
1059
(req_height <= priv->capability.maxheight))
1060
return(TVI_CONTROL_TRUE);
1061
return(TVI_CONTROL_FALSE);
1063
case TVI_CONTROL_VID_SET_HEIGHT:
1064
priv->height = *(int *)arg;
1065
return(TVI_CONTROL_TRUE);
1066
case TVI_CONTROL_VID_GET_PICTURE:
1067
if (ioctl(priv->video_fd, VIDIOCGPICT, &priv->picture) == -1)
1069
mp_msg(MSGT_TV, MSGL_ERR, "ioctl get picture failed: %s\n", strerror(errno));
1070
return(TVI_CONTROL_FALSE);
1072
return(TVI_CONTROL_TRUE);
1073
case TVI_CONTROL_VID_SET_PICTURE:
1074
if (ioctl(priv->video_fd, VIDIOCSPICT, &priv->picture) == -1)
1076
mp_msg(MSGT_TV, MSGL_ERR, "ioctl get picture failed: %s\n", strerror(errno));
1077
return(TVI_CONTROL_FALSE);
1079
return(TVI_CONTROL_TRUE);
1080
case TVI_CONTROL_VID_SET_BRIGHTNESS:
1081
priv->picture.brightness = (327*(*(int *)arg+100)) + 68;
1082
return control(priv, TVI_CONTROL_VID_SET_PICTURE, 0);
1083
case TVI_CONTROL_VID_SET_HUE:
1084
priv->picture.hue = (327*(*(int *)arg+100)) + 68;
1085
return control(priv, TVI_CONTROL_VID_SET_PICTURE, 0);
1086
case TVI_CONTROL_VID_SET_SATURATION:
1087
priv->picture.colour = (327*(*(int *)arg+100)) + 68;
1088
return control(priv, TVI_CONTROL_VID_SET_PICTURE, 0);
1089
case TVI_CONTROL_VID_SET_CONTRAST:
1090
priv->picture.contrast = (327*(*(int *)arg+100)) + 68;
1091
return control(priv, TVI_CONTROL_VID_SET_PICTURE, 0);
1092
case TVI_CONTROL_VID_GET_BRIGHTNESS:
1093
if(!control(priv, TVI_CONTROL_VID_GET_PICTURE, 0)) return 0;
1094
*(int*)arg = ((int)priv->picture.brightness-68)/327-100;
1096
case TVI_CONTROL_VID_GET_HUE:
1097
if(!control(priv, TVI_CONTROL_VID_GET_PICTURE, 0)) return 0;
1098
*(int*)arg = ((int)priv->picture.hue-68)/327-100;
1100
case TVI_CONTROL_VID_GET_SATURATION:
1101
if(!control(priv, TVI_CONTROL_VID_GET_PICTURE, 0)) return 0;
1102
*(int*)arg = ((int)priv->picture.colour-68)/327-100;
1104
case TVI_CONTROL_VID_GET_CONTRAST:
1105
if(!control(priv, TVI_CONTROL_VID_GET_PICTURE, 0)) return 0;
1106
*(int*)arg = ((int)priv->picture.contrast-68)/327-100;
1108
case TVI_CONTROL_VID_GET_FPS:
1109
*(float *)arg=priv->fps;
1110
return(TVI_CONTROL_TRUE);
1112
/* ========== TUNER controls =========== */
1113
case TVI_CONTROL_TUN_GET_FREQ:
1117
if (ioctl(priv->video_fd, VIDIOCGFREQ, &freq) == -1)
1119
mp_msg(MSGT_TV, MSGL_ERR, "ioctl get freq failed: %s\n", strerror(errno));
1120
return(TVI_CONTROL_FALSE);
1123
/* tuner uses khz not mhz ! */
1124
// if (priv->tuner.flags & VIDEO_TUNER_LOW)
1126
*(unsigned long *)arg = freq;
1127
return(TVI_CONTROL_TRUE);
1129
case TVI_CONTROL_TUN_SET_FREQ:
1131
/* argument is in MHz ! */
1132
unsigned long freq = *(unsigned long *)arg;
1134
if (priv->capability.audios) {
1135
priv->audio[priv->audio_id].flags |= VIDEO_AUDIO_MUTE;
1136
ioctl(priv->video_fd, VIDIOCSAUDIO, &priv->audio[priv->audio_id]);
1139
mp_msg(MSGT_TV, MSGL_V, "requested frequency: %.3f\n", (float)freq/16);
1141
/* tuner uses khz not mhz ! */
1142
// if (priv->tuner.flags & VIDEO_TUNER_LOW)
1144
// mp_msg(MSGT_TV, MSGL_V, " requesting from driver: freq=%.3f\n", (float)freq/16);
1145
if (ioctl(priv->video_fd, VIDIOCSFREQ, &freq) == -1)
1147
mp_msg(MSGT_TV, MSGL_ERR, "ioctl set freq failed: %s\n", strerror(errno));
1148
return(TVI_CONTROL_FALSE);
1150
usleep(100000); // wait to suppress noise during switching
1152
if (priv->capability.audios) {
1153
priv->audio[priv->audio_id].flags &= ~VIDEO_AUDIO_MUTE;
1154
ioctl(priv->video_fd, VIDIOCSAUDIO, &priv->audio[priv->audio_id]);
1157
return(TVI_CONTROL_TRUE);
1159
case TVI_CONTROL_TUN_GET_TUNER:
1161
if (ioctl(priv->video_fd, VIDIOCGTUNER, &priv->tuner) == -1)
1163
mp_msg(MSGT_TV, MSGL_ERR, "ioctl get tuner failed: %s\n", strerror(errno));
1164
return(TVI_CONTROL_FALSE);
1167
mp_msg(MSGT_TV, MSGL_V, "Tuner (%s) range: %lu -> %lu\n", priv->tuner.name,
1168
priv->tuner.rangelow, priv->tuner.rangehigh);
1169
return(TVI_CONTROL_TRUE);
1171
case TVI_CONTROL_TUN_SET_TUNER:
1173
if (ioctl(priv->video_fd, VIDIOCSTUNER, &priv->tuner) == -1)
1175
mp_msg(MSGT_TV, MSGL_ERR, "ioctl set tuner failed: %s\n", strerror(errno));
1176
return(TVI_CONTROL_FALSE);
1178
return(TVI_CONTROL_TRUE);
1180
case TVI_CONTROL_TUN_SET_NORM:
1182
int req_mode = *(int *)arg;
1184
if ((req_mode != TV_NORM_PAL) && (req_mode != TV_NORM_NTSC) && (req_mode != TV_NORM_SECAM)
1185
&& (req_mode != TV_NORM_PALNC) && (req_mode != TV_NORM_PALM) && (req_mode != TV_NORM_PALN)
1186
&& (req_mode != TV_NORM_NTSCJP)) {
1187
mp_msg(MSGT_TV, MSGL_ERR, "Unknown norm!\n");
1188
return(TVI_CONTROL_FALSE);
1191
if (priv->channels[priv->act_channel].flags & VIDEO_VC_TUNER) {
1194
control(priv, TVI_CONTROL_TUN_GET_TUNER, 0);
1195
if (((req_mode == TV_NORM_PAL
1196
|| req_mode == TV_NORM_PALNC
1197
|| req_mode == TV_NORM_PALN) && !(priv->tuner.flags & VIDEO_TUNER_PAL)) ||
1198
((req_mode == TV_NORM_NTSC
1199
|| req_mode == TV_NORM_NTSCJP
1200
|| req_mode == TV_NORM_PALM) && !(priv->tuner.flags & VIDEO_TUNER_NTSC)) ||
1201
((req_mode == TV_NORM_SECAM) && !(priv->tuner.flags & VIDEO_TUNER_SECAM)))
1203
mp_msg(MSGT_TV, MSGL_ERR, "Tuner isn't capable to set norm!\n");
1204
return(TVI_CONTROL_FALSE);
1207
prev_mode = priv->tuner.mode;
1213
priv->tuner.mode = VIDEO_MODE_PAL;
1216
case TV_NORM_NTSCJP:
1218
priv->tuner.mode = VIDEO_MODE_NTSC;
1221
priv->tuner.mode = VIDEO_MODE_SECAM;
1225
if (control(priv, TVI_CONTROL_TUN_SET_TUNER, &priv->tuner) != TVI_CONTROL_TRUE) {
1226
// norm setting failed, but maybe it's only because it's fixed
1227
if (priv->tuner.mode != prev_mode) return(TVI_CONTROL_FALSE); // no it really failed
1234
priv->channels[priv->act_channel].norm = VIDEO_MODE_PAL;
1237
priv->channels[priv->act_channel].norm = VIDEO_MODE_NTSC;
1240
priv->channels[priv->act_channel].norm = VIDEO_MODE_SECAM;
1243
priv->channels[priv->act_channel].norm = 3;
1246
priv->channels[priv->act_channel].norm = 4;
1249
priv->channels[priv->act_channel].norm = 5;
1251
case TV_NORM_NTSCJP:
1252
priv->channels[priv->act_channel].norm = 6;
1255
if (ioctl(priv->video_fd, VIDIOCSCHAN, &priv->channels[priv->act_channel]) == -1)
1257
mp_msg(MSGT_TV, MSGL_ERR, "ioctl set chan failed: %s\n", strerror(errno));
1258
return(TVI_CONTROL_FALSE);
1261
if (ioctl(priv->video_fd, VIDIOCGCAP, &priv->capability) == -1) {
1262
mp_msg(MSGT_TV, MSGL_ERR, "ioctl get capabilites failed: %s\n", strerror(errno));
1263
return(TVI_CONTROL_FALSE);
1266
if(req_mode == TV_NORM_PAL || req_mode == TV_NORM_SECAM || req_mode == TV_NORM_PALN || req_mode == TV_NORM_PALNC) {
1267
priv->fps = PAL_FPS;
1270
if(req_mode == TV_NORM_NTSC || req_mode == TV_NORM_NTSCJP || req_mode == TV_NORM_PALM) {
1271
priv->fps = NTSC_FPS;
1274
if(priv->height > priv->capability.maxheight) {
1275
priv->height = priv->capability.maxheight;
1278
if(priv->width > priv->capability.maxwidth) {
1279
priv->width = priv->capability.maxwidth;
1282
return(TVI_CONTROL_TRUE);
1284
case TVI_CONTROL_TUN_GET_NORM:
1286
*(int *)arg = priv->tuner.mode;
1288
return(TVI_CONTROL_TRUE);
1291
/* ========== AUDIO controls =========== */
1292
case TVI_CONTROL_AUD_GET_FORMAT:
1294
*(int *)arg = AF_FORMAT_S16_LE;
1295
return(TVI_CONTROL_TRUE);
1297
case TVI_CONTROL_AUD_GET_CHANNELS:
1299
*(int *)arg = priv->audio_in.channels;
1300
return(TVI_CONTROL_TRUE);
1302
case TVI_CONTROL_AUD_GET_SAMPLERATE:
1304
*(int *)arg = priv->audio_in.samplerate;
1305
return(TVI_CONTROL_TRUE);
1307
case TVI_CONTROL_AUD_GET_SAMPLESIZE:
1309
*(int *)arg = priv->audio_in.bytes_per_sample;
1310
return(TVI_CONTROL_TRUE);
1312
case TVI_CONTROL_AUD_SET_SAMPLERATE:
1314
if (audio_in_set_samplerate(&priv->audio_in, *(int *)arg) < 0) return TVI_CONTROL_FALSE;
1315
setup_audio_buffer_sizes(priv);
1316
return(TVI_CONTROL_TRUE);
1318
/* ========== SPECIFIC controls =========== */
1319
case TVI_CONTROL_SPC_GET_INPUT:
1321
int req_chan = *(int *)arg;
1324
for (i = 0; i < priv->capability.channels; i++)
1326
if (priv->channels[i].channel == req_chan)
1330
priv->act_channel = i;
1332
if (ioctl(priv->video_fd, VIDIOCGCHAN, &priv->channels[i]) == -1)
1334
mp_msg(MSGT_TV, MSGL_ERR, "ioctl get channel failed: %s\n", strerror(errno));
1335
return(TVI_CONTROL_FALSE);
1337
return(TVI_CONTROL_TRUE);
1340
case TVI_CONTROL_SPC_SET_INPUT:
1342
struct video_channel chan;
1343
int req_chan = *(int *)arg;
1346
if (req_chan >= priv->capability.channels)
1348
mp_msg(MSGT_TV, MSGL_ERR, "Invalid input requested: %d, valid: 0-%d\n",
1349
req_chan, priv->capability.channels - 1);
1350
return(TVI_CONTROL_FALSE);
1353
for (i = 0; i < priv->capability.channels; i++)
1355
if (priv->channels[i].channel == req_chan)
1356
chan = priv->channels[i];
1359
if (ioctl(priv->video_fd, VIDIOCSCHAN, &chan) == -1)
1361
mp_msg(MSGT_TV, MSGL_ERR, "ioctl set chan failed: %s\n", strerror(errno));
1362
return(TVI_CONTROL_FALSE);
1364
mp_msg(MSGT_TV, MSGL_INFO, "Using input '%s'\n", chan.name);
1366
priv->act_channel = i;
1368
/* update tuner state */
1369
// if (priv->capability.type & VID_TYPE_TUNER)
1370
if (priv->channels[priv->act_channel].flags & VIDEO_VC_TUNER)
1371
control(priv, TVI_CONTROL_TUN_GET_TUNER, 0);
1373
/* update local channel list */
1374
control(priv, TVI_CONTROL_SPC_GET_INPUT, &req_chan);
1375
return(TVI_CONTROL_TRUE);
1376
case TVI_CONTROL_IMMEDIATE:
1377
priv->immediate_mode = 1;
1378
return(TVI_CONTROL_TRUE);
1382
return(TVI_CONTROL_UNKNOWN);
1385
// copies a video frame
1386
// for RGB (i.e. BGR in mplayer) flips the image upside down
1387
// for YV12 swaps the 2nd and 3rd plane
1388
static inline void copy_frame(priv_t *priv, unsigned char *dest, unsigned char *source)
1391
unsigned char *sptr;
1393
// YV12 uses VIDEO_PALETTE_YUV420P, but the planes are swapped
1394
if (priv->format == IMGFMT_YV12) {
1395
memcpy(dest, source, priv->width * priv->height);
1396
memcpy(dest+priv->width * priv->height*5/4, source+priv->width * priv->height, priv->width * priv->height/4);
1397
memcpy(dest+priv->width * priv->height, source+priv->width * priv->height*5/4, priv->width * priv->height/4);
1401
switch (priv->picture.palette) {
1402
case VIDEO_PALETTE_RGB24:
1403
case VIDEO_PALETTE_RGB32:
1404
case VIDEO_PALETTE_RGB555:
1405
case VIDEO_PALETTE_RGB565:
1406
sptr = source + (priv->height-1)*priv->bytesperline;
1407
for (i = 0; i < priv->height; i++) {
1408
memcpy(dest, sptr, priv->bytesperline);
1409
dest += priv->bytesperline;
1410
sptr -= priv->bytesperline;
1413
case VIDEO_PALETTE_UYVY:
1414
case VIDEO_PALETTE_YUV420P:
1416
memcpy(dest, source, priv->bytesperline * priv->height);
1421
// maximum skew change, in frames
1422
#define MAX_SKEW_DELTA 0.6
1423
static void *video_grabber(void *data)
1425
#define MAXTOL (priv->nbuf)
1426
priv_t *priv = (priv_t*)data;
1427
struct timeval curtime;
1428
long long skew, prev_skew, xskew, interval, prev_interval;
1435
/* start the capture process */
1437
if ( tv_param_mjpeg )
1439
mp_msg(MSGT_TV, MSGL_INFO, " MJP: gonna capture ! \n");
1440
for (i=0; i < priv->nbuf; i++) {
1442
if (ioctl(priv->video_fd, MJPIOC_QBUF_CAPT, &num) < 0)
1444
mp_msg(MSGT_TV, MSGL_ERR,
1445
"\n MJP: ioctl MJPIOC_QBUF_CAPT b failed: %s\n", strerror(errno));
1451
for (i=0; i < priv->nbuf; i++) {
1452
if (ioctl(priv->video_fd, VIDIOCMCAPTURE, &priv->buf[i]) == -1)
1454
mp_msg(MSGT_TV, MSGL_ERR, "\nioctl mcapture failed: %s\n", strerror(errno));
1459
gettimeofday(&curtime, NULL);
1460
priv->starttime = (long long)1e6*curtime.tv_sec + curtime.tv_usec;
1461
priv->audio_skew_measure_time = 0;
1462
pthread_mutex_unlock(&priv->audio_starter);
1472
for (framecount = 0; !priv->shutdown;)
1474
for (i = 0; i < priv->nbuf && !priv->shutdown; i++, framecount++) {
1476
if (priv->immediate_mode) {
1477
while (priv->video_cnt == priv->video_buffer_size_max) {
1479
if (priv->shutdown) {
1487
if ( tv_param_mjpeg )
1489
while (ioctl(priv->video_fd, MJPIOC_SYNC, &priv->buf[frame].frame) < 0 &&
1490
(errno == EAGAIN || errno == EINTR));
1495
while (ioctl(priv->video_fd, VIDIOCSYNC, &priv->buf[frame].frame) < 0 &&
1496
(errno == EAGAIN || errno == EINTR));
1498
mp_dbg(MSGT_TV, MSGL_DBG3, "\npicture sync failed\n");
1500
gettimeofday(&curtime, NULL);
1501
if (!priv->immediate_mode) {
1502
interval = (long long)1e6*curtime.tv_sec + curtime.tv_usec - priv->starttime;
1504
interval = (long long)1e6*framecount/priv->fps;
1507
if (!priv->immediate_mode) {
1508
long long period, orig_interval;
1510
if (tolerance == 0) {
1511
if (interval - prev_interval == 0) {
1512
mp_msg(MSGT_TV, MSGL_V, "\nvideo capture thread: frame delta = 0\n");
1513
} else if ((interval - prev_interval < (long long)0.85e6/priv->fps)
1514
|| (interval - prev_interval > (long long)1.15e6/priv->fps) ) {
1515
mp_msg(MSGT_TV, MSGL_V, "\nvideo capture thread: frame delta ~ %.1lf fps\n",
1516
(double)1e6/(interval - prev_interval));
1520
// correct the rate fluctuations on a small scale
1521
orig_interval = interval;
1522
period = priv->video_interval_sum/VIDEO_AVG_BUFFER_SIZE;
1523
if (interval - prev_interval > 105*period/100) {
1524
if (tolerance > 0) {
1525
mp_msg(MSGT_TV, MSGL_DBG3, "correcting timestamp\n");
1526
interval = prev_interval + priv->video_interval_sum/VIDEO_AVG_BUFFER_SIZE;
1529
mp_msg(MSGT_TV, MSGL_DBG3, "bad - frames were dropped\n");
1533
if (tolerance < MAXTOL) {
1534
mp_msg(MSGT_TV, MSGL_DBG3, "fluctuation overcome\n");
1539
priv->video_interval_sum -= priv->video_avg_buffer[priv->video_avg_ptr];
1540
priv->video_avg_buffer[priv->video_avg_ptr++] = orig_interval-prev_interval;
1541
priv->video_interval_sum += orig_interval-prev_interval;
1542
if (priv->video_avg_ptr >= VIDEO_AVG_BUFFER_SIZE) priv->video_avg_ptr = 0;
1544
// fprintf(stderr, "fps: %lf\n", (double)1e6*VIDEO_AVG_BUFFER_SIZE/priv->video_interval_sum);
1546
// interpolate the skew in time
1547
pthread_mutex_lock(&priv->skew_mutex);
1548
xskew = priv->audio_skew + (interval - priv->audio_skew_measure_time)*priv->audio_skew_factor;
1549
pthread_mutex_unlock(&priv->skew_mutex);
1550
// correct extreme skew changes to avoid (especially) moving backwards in time
1551
if (xskew - prev_skew > (interval - prev_interval)*MAX_SKEW_DELTA) {
1552
skew = prev_skew + (interval - prev_interval)*MAX_SKEW_DELTA;
1553
} else if (xskew - prev_skew < -(interval - prev_interval)*MAX_SKEW_DELTA) {
1554
skew = prev_skew - (interval - prev_interval)*MAX_SKEW_DELTA;
1560
mp_msg(MSGT_TV, MSGL_DBG3, "\nfps = %lf, interval = %lf, a_skew = %f, corr_skew = %f\n",
1561
(interval != prev_interval) ? (double)1e6/(interval - prev_interval) : -1,
1562
(double)1e-6*interval, (double)1e-6*xskew, (double)1e-6*skew);
1563
mp_msg(MSGT_TV, MSGL_DBG3, "vcnt = %d, acnt = %d\n", priv->video_cnt, priv->audio_cnt);
1566
prev_interval = interval;
1568
/* allocate a new buffer, if needed */
1569
pthread_mutex_lock(&priv->video_buffer_mutex);
1570
if (priv->video_buffer_size_current < priv->video_buffer_size_max) {
1571
if (priv->video_cnt == priv->video_buffer_size_current) {
1572
unsigned char *newbuf = (unsigned char*)calloc(priv->bytesperline, priv->height);
1574
memmove(priv->video_ringbuffer+priv->video_tail+1, priv->video_ringbuffer+priv->video_tail,
1575
(priv->video_buffer_size_current-priv->video_tail)*sizeof(unsigned char *));
1576
memmove(priv->video_timebuffer+priv->video_tail+1, priv->video_timebuffer+priv->video_tail,
1577
(priv->video_buffer_size_current-priv->video_tail)*sizeof(long long));
1578
priv->video_ringbuffer[priv->video_tail] = newbuf;
1579
if ((priv->video_head >= priv->video_tail) && (priv->video_cnt > 0)) priv->video_head++;
1580
priv->video_buffer_size_current++;
1584
pthread_mutex_unlock(&priv->video_buffer_mutex);
1586
if (priv->video_cnt == priv->video_buffer_size_current) {
1587
if (!priv->immediate_mode) {
1588
mp_msg(MSGT_TV, MSGL_ERR, "\nvideo buffer full - dropping frame\n");
1591
if (priv->immediate_mode) {
1592
priv->video_timebuffer[priv->video_tail] = interval;
1594
// compensate for audio skew
1595
// negative skew => there are more audio samples, increase interval
1596
// positive skew => less samples, shorten the interval
1597
priv->video_timebuffer[priv->video_tail] = interval - skew;
1600
if ( tv_param_mjpeg )
1601
copy_frame(priv, priv->video_ringbuffer[priv->video_tail],
1602
priv->mmap+(priv->mjpeg_bufsize)*i);
1604
copy_frame(priv, priv->video_ringbuffer[priv->video_tail], priv->mmap+priv->mbuf.offsets[frame]);
1605
priv->video_tail = (priv->video_tail+1)%priv->video_buffer_size_current;
1609
if ( tv_param_mjpeg )
1612
if (ioctl(priv->video_fd, MJPIOC_QBUF_CAPT, &num) < 0)
1614
mp_msg(MSGT_TV, MSGL_ERR, "\n MJP: ioctl MJPIOC_QBUF_CAPT end failed: %s\n",
1621
if (ioctl(priv->video_fd, VIDIOCMCAPTURE, &priv->buf[frame]) == -1)
1623
mp_msg(MSGT_TV, MSGL_ERR, "\nioctl mcapture failed: %s\n", strerror(errno));
1631
mp_msg(MSGT_TV, MSGL_INFO, " MJP: returning! \n");
1635
static double grab_video_frame(priv_t *priv, char *buffer, int len)
1640
pthread_create(&priv->video_grabber_thread, NULL, video_grabber, priv);
1644
while (priv->video_cnt == 0) {
1648
pthread_mutex_lock(&priv->video_buffer_mutex);
1649
interval = (double)priv->video_timebuffer[priv->video_head]*1e-6;
1650
memcpy(buffer, priv->video_ringbuffer[priv->video_head], len);
1652
priv->video_head = (priv->video_head+1)%priv->video_buffer_size_current;
1653
pthread_mutex_unlock(&priv->video_buffer_mutex);
1658
static int get_video_framesize(priv_t *priv)
1660
return(priv->bytesperline * priv->height);
1663
static void *audio_grabber(void *data)
1665
priv_t *priv = (priv_t*)data;
1667
int i, audio_skew_ptr = 0;
1668
long long current_time, prev_skew = 0;
1670
pthread_mutex_lock(&priv->audio_starter);
1672
audio_in_start_capture(&priv->audio_in);
1673
for (i = 0; i < priv->aud_skew_cnt; i++)
1674
priv->audio_skew_buffer[i] = 0;
1676
for (; !priv->shutdown;)
1678
if (audio_in_read_chunk(&priv->audio_in, priv->audio_ringbuffer+priv->audio_tail*priv->audio_in.blocksize) < 0)
1681
gettimeofday(&tv, NULL);
1683
priv->audio_recv_blocks_total++;
1684
current_time = (long long)1e6*tv.tv_sec + tv.tv_usec - priv->starttime;
1686
priv->audio_skew_total -= priv->audio_skew_buffer[audio_skew_ptr];
1687
priv->audio_skew_buffer[audio_skew_ptr] = current_time
1688
- 1e6*priv->audio_secs_per_block*priv->audio_recv_blocks_total;
1689
priv->audio_skew_total += priv->audio_skew_buffer[audio_skew_ptr];
1690
audio_skew_ptr = (audio_skew_ptr+1) % priv->aud_skew_cnt;
1692
pthread_mutex_lock(&priv->skew_mutex);
1693
// linear interpolation - here we interpolate current skew value
1694
// from the moving average, which we expect to be in the middle
1696
if (priv->audio_recv_blocks_total > priv->aud_skew_cnt) {
1697
priv->audio_skew = priv->audio_skew_total/priv->aud_skew_cnt;
1698
priv->audio_skew += (priv->audio_skew*priv->aud_skew_cnt)/(2*priv->audio_recv_blocks_total-priv->aud_skew_cnt);
1700
// this smoothes the evolution of audio_skew at startup a bit
1701
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);
1703
// current skew factor (assuming linearity)
1704
// used for further interpolation in video_grabber
1705
// probably overkill but seems to be necessary for
1706
// stress testing by dropping half of the audio frames ;)
1707
// especially when using ALSA with large block sizes
1708
// where audio_skew remains a long while behind
1709
if ((priv->audio_skew_measure_time != 0) && (current_time - priv->audio_skew_measure_time != 0)) {
1710
priv->audio_skew_factor = (double)(priv->audio_skew-prev_skew)/(current_time - priv->audio_skew_measure_time);
1712
priv->audio_skew_factor = 0.0;
1715
priv->audio_skew_measure_time = current_time;
1716
prev_skew = priv->audio_skew;
1717
pthread_mutex_unlock(&priv->skew_mutex);
1719
if ((priv->audio_tail+1) % priv->audio_buffer_size == priv->audio_head) {
1720
mp_msg(MSGT_TV, MSGL_ERR, "\ntoo bad - dropping audio frame !\n");
1723
priv->audio_tail = (priv->audio_tail+1) % priv->audio_buffer_size;
1730
static double grab_audio_frame(priv_t *priv, char *buffer, int len)
1732
mp_dbg(MSGT_TV, MSGL_DBG2, "grab_audio_frame(priv=%p, buffer=%p, len=%d)\n",
1736
pthread_create(&priv->video_grabber_thread, NULL, video_grabber, priv);
1740
// compensate for dropped audio frames
1741
if (priv->audio_drop && (priv->audio_head == priv->audio_tail)) {
1743
priv->audio_sent_blocks_total++;
1744
memset(buffer, 0, len);
1745
return (double)priv->audio_sent_blocks_total*priv->audio_secs_per_block;
1748
while (priv->audio_head == priv->audio_tail) {
1751
memcpy(buffer, priv->audio_ringbuffer+priv->audio_head*priv->audio_in.blocksize, len);
1752
priv->audio_head = (priv->audio_head+1) % priv->audio_buffer_size;
1754
priv->audio_sent_blocks_total++;
1755
return (double)priv->audio_sent_blocks_total*priv->audio_secs_per_block;
1758
static int get_audio_framesize(priv_t *priv)
1760
return(priv->audio_in.blocksize);