/* Video 4 Linux input (C) Alex Beregszaszi Some ideas are based on xawtv/libng's grab-v4l.c written by Gerd Knorr Multithreading, a/v sync and native ALSA support by Jindrich Makovicka Mjpeg hardware encoding support by Iván Szántó CODE IS UNDER DEVELOPMENT, NO FEATURE REQUESTS PLEASE! */ #include "config.h" #if defined(USE_TV) && defined(HAVE_TV_V4L) #include #include #include #include #include #include #include /* Necessary to prevent collisions between and when V4L2 is installed. */ #define _LINUX_TIME_H #include #include #include #include #include #include #ifdef HAVE_SYS_SYSINFO_H #include #endif #include "mp_msg.h" #include "libaf/af_format.h" #include "libvo/img_format.h" #include "libvo/fastmemcpy.h" #include "libvo/videodev_mjpeg.h" #include "tv.h" #include "audio_in.h" static tvi_info_t info = { "Video 4 Linux input", "v4l", "Alex Beregszaszi", "under development" }; #define PAL_WIDTH 768 #define PAL_HEIGHT 576 #define PAL_FPS 25 #define NTSC_WIDTH 640 #define NTSC_HEIGHT 480 #define NTSC_FPS (30000.0/1001.0) #define MAX_AUDIO_CHANNELS 10 #define VID_BUF_SIZE_IMMEDIATE 2 #define VIDEO_AVG_BUFFER_SIZE 600 typedef struct { /* general */ char *video_device; int video_fd; struct video_capability capability; struct video_channel *channels; int act_channel; struct video_tuner tuner; /* video */ struct video_picture picture; int format; /* output format */ int width; int height; int bytesperline; float fps; struct video_mbuf mbuf; unsigned char *mmap; struct video_mmap *buf; int nbuf; /* audio */ char *audio_device; audio_in_t audio_in; int audio_id; struct video_audio audio[MAX_AUDIO_CHANNELS]; int audio_channels[MAX_AUDIO_CHANNELS]; /* buffering stuff */ int immediate_mode; int audio_buffer_size; int aud_skew_cnt; unsigned char *audio_ringbuffer; long long *audio_skew_buffer; volatile int audio_head; volatile int audio_tail; volatile int audio_cnt; volatile long long audio_skew; volatile double audio_skew_factor; volatile long long audio_skew_measure_time; volatile int audio_drop; int first; int video_buffer_size_max; volatile int video_buffer_size_current; unsigned char **video_ringbuffer; long long *video_timebuffer; long long *video_avg_buffer; int video_avg_ptr; int video_interval_sum; volatile int video_head; volatile int video_tail; volatile int video_cnt; volatile int shutdown; pthread_t audio_grabber_thread; pthread_t video_grabber_thread; pthread_mutex_t audio_starter; pthread_mutex_t skew_mutex; pthread_mutex_t video_buffer_mutex; long long starttime; double audio_secs_per_block; long long audio_skew_total; long audio_recv_blocks_total; long audio_sent_blocks_total; long mjpeg_bufsize; } priv_t; #include "tvi_def.h" static const char *device_cap2name[] = { "capture", "tuner", "teletext", "overlay", "chromakey", "clipping", "frameram", "scales", "monochrome", "subcapture", "mpeg-decoder", "mpeg-encoder", "mjpeg-decoder", "mjpeg-encoder", NULL }; static const char *device_palette2name[] = { "-", "grey", "hi240", "rgb16", "rgb24", "rgb32", "rgb15", "yuv422", "yuyv", "uyvy", "yuv420", "yuv411", "raw", "yuv422p", "yuv411p", "yuv420p", "yuv410p" }; #define PALETTE(x) ((x < sizeof(device_palette2name)/sizeof(char*)) ? device_palette2name[x] : "UNKNOWN") static const char *norm2name(int mode) { switch (mode) { case VIDEO_MODE_PAL: return "pal"; case VIDEO_MODE_SECAM: return "secam"; case VIDEO_MODE_NTSC: return "ntsc"; case VIDEO_MODE_AUTO: return "auto"; default: return "unknown"; } }; static const char *audio_mode2name(int mode) { switch (mode) { case VIDEO_SOUND_MONO: return "mono"; case VIDEO_SOUND_STEREO: return "stereo"; case VIDEO_SOUND_LANG1: return "language1"; case VIDEO_SOUND_LANG2: return "language2"; default: return "unknown"; } }; static void *audio_grabber(void *data); static void *video_grabber(void *data); static int palette2depth(int palette) { switch(palette) { /* component */ case VIDEO_PALETTE_RGB555: return(15); case VIDEO_PALETTE_RGB565: return(16); case VIDEO_PALETTE_RGB24: return(24); case VIDEO_PALETTE_RGB32: return(32); /* planar */ case VIDEO_PALETTE_YUV411P: case VIDEO_PALETTE_YUV420P: case VIDEO_PALETTE_YUV410P: return(12); /* packed */ case VIDEO_PALETTE_YUV422P: case VIDEO_PALETTE_YUV422: case VIDEO_PALETTE_YUYV: case VIDEO_PALETTE_UYVY: case VIDEO_PALETTE_YUV420: case VIDEO_PALETTE_YUV411: return(16); } return(-1); } static int format2palette(int format) { switch(format) { case IMGFMT_BGR15: return(VIDEO_PALETTE_RGB555); case IMGFMT_BGR16: return(VIDEO_PALETTE_RGB565); case IMGFMT_BGR24: return(VIDEO_PALETTE_RGB24); case IMGFMT_BGR32: return(VIDEO_PALETTE_RGB32); case IMGFMT_YV12: case IMGFMT_I420: return(VIDEO_PALETTE_YUV420P); case IMGFMT_YUY2: return(VIDEO_PALETTE_YUV422); case IMGFMT_UYVY: return(VIDEO_PALETTE_UYVY); } return(-1); } // sets and sanitizes audio buffer/block sizes static void setup_audio_buffer_sizes(priv_t *priv) { int bytes_per_sample = priv->audio_in.bytes_per_sample; // make the audio buffer at least 5 seconds long priv->audio_buffer_size = 1 + 5*priv->audio_in.samplerate *priv->audio_in.channels *bytes_per_sample/priv->audio_in.blocksize; if (priv->audio_buffer_size < 256) priv->audio_buffer_size = 256; // make the skew buffer at least 1 second long priv->aud_skew_cnt = 1 + 1*priv->audio_in.samplerate *priv->audio_in.channels *bytes_per_sample/priv->audio_in.blocksize; if (priv->aud_skew_cnt < 16) priv->aud_skew_cnt = 16; mp_msg(MSGT_TV, MSGL_V, "Audio capture - buffer %d blocks of %d bytes, skew average from %d meas.\n", priv->audio_buffer_size, priv->audio_in.blocksize, priv->aud_skew_cnt); } tvi_handle_t *tvi_init_v4l(char *device, char *adevice) { tvi_handle_t *h; priv_t *priv; h = new_handle(); if (!h) return(NULL); priv = h->priv; /* set video device name */ if (!device) priv->video_device = strdup("/dev/video0"); else priv->video_device = strdup(device); /* set video device name */ if (!adevice) priv->audio_device = NULL; else { priv->audio_device = strdup(adevice); } /* allocation failed */ if (!priv->video_device) { free_handle(h); return(NULL); } return(h); } /* retrieves info about audio channels from the BTTV */ static void init_v4l_audio(priv_t *priv) { int i; int reqmode; if (!priv->capability.audios) return; /* audio chanlist */ mp_msg(MSGT_TV, MSGL_V, " Audio devices: %d\n", priv->capability.audios); mp_msg(MSGT_TV, MSGL_V, "Video capture card reports the audio setup as follows:\n"); for (i = 0; i < priv->capability.audios; i++) { if (i >= MAX_AUDIO_CHANNELS) { mp_msg(MSGT_TV, MSGL_ERR, "no space for more audio channels (increase in source!) (%d > %d)\n", i, MAX_AUDIO_CHANNELS); i = priv->capability.audios; break; } priv->audio[i].audio = i; if (ioctl(priv->video_fd, VIDIOCGAUDIO, &priv->audio[i]) == -1) { mp_msg(MSGT_TV, MSGL_ERR, "ioctl get audio failed: %s\n", strerror(errno)); break; } /* mute all channels */ priv->audio[i].flags |= VIDEO_AUDIO_MUTE; reqmode = -1; if (tv_param_amode >= 0) { switch (tv_param_amode) { case 0: reqmode = VIDEO_SOUND_MONO; break; case 1: reqmode = VIDEO_SOUND_STEREO; break; case 2: reqmode = VIDEO_SOUND_LANG1; break; case 3: reqmode = VIDEO_SOUND_LANG2; break; default: mp_msg(MSGT_TV, MSGL_ERR, "Unknown audio mode requested.\n"); break; } if (reqmode >= 0) priv->audio[i].mode = reqmode; } ioctl(priv->video_fd, VIDIOCSAUDIO, &priv->audio[i]); // get the parameters back if (ioctl(priv->video_fd, VIDIOCGAUDIO, &priv->audio[i]) == -1) { mp_msg(MSGT_TV, MSGL_ERR, "ioctl get audio failed: %s\n", strerror(errno)); break; } switch(priv->audio[i].mode) { case VIDEO_SOUND_MONO: case VIDEO_SOUND_LANG1: case VIDEO_SOUND_LANG2: priv->audio_channels[i] = 1; break; case VIDEO_SOUND_STEREO: priv->audio_channels[i] = 2; break; default: mp_msg(MSGT_TV, MSGL_ERR, "Card reports an unknown audio mode !\n"); mp_msg(MSGT_TV, MSGL_ERR, "Trying two channel audio. Use forcechan to override.\n"); priv->audio_channels[i] = 2; break; } if (reqmode >= 0 && priv->audio[i].mode != reqmode) { mp_msg(MSGT_TV, MSGL_ERR, "Audio mode setup warning!\n"); mp_msg(MSGT_TV, MSGL_ERR, "Requested mode was %s, but v4l still reports %s.\n", audio_mode2name(reqmode), audio_mode2name(priv->audio[i].mode)); mp_msg(MSGT_TV, MSGL_ERR, "You may need \"forcechan\" option to force stereo/mono audio recording.\n"); } /* display stuff */ mp_msg(MSGT_TV, MSGL_V, " %d: %s: ", priv->audio[i].audio, priv->audio[i].name); if (priv->audio[i].flags & VIDEO_AUDIO_MUTABLE) { mp_msg(MSGT_TV, MSGL_V, "muted=%s ", (priv->audio[i].flags & VIDEO_AUDIO_MUTE) ? "yes" : "no"); } mp_msg(MSGT_TV, MSGL_V, "vol=%d bass=%d treble=%d balance=%d mode=%s", priv->audio[i].volume, priv->audio[i].bass, priv->audio[i].treble, priv->audio[i].balance, audio_mode2name(priv->audio[i].mode)); mp_msg(MSGT_TV, MSGL_V, " chan=%d\n", priv->audio_channels[i]); if (tv_param_forcechan >= 0) priv->audio_channels[i] = tv_param_forcechan; // we'll call VIDIOCSAUDIO again when starting capture // let's set audio mode to requested mode again for the case // when VIDIOCGAUDIO just cannot report the mode correctly if (reqmode >= 0) priv->audio[i].mode = reqmode; } } #if !defined(__LINUX_VIDEODEV2_H) && !defined(VIDIOC_QUERYCAP) struct v4l2_capability { __u8 driver[16]; /* i.e. "bttv" */ __u8 card[32]; /* i.e. "Hauppauge WinTV" */ __u8 bus_info[32]; /* "PCI:" + pci_dev->slot_name */ __u32 version; /* should use KERNEL_VERSION() */ __u32 capabilities; /* Device capabilities */ __u32 reserved[4]; }; #define VIDIOC_QUERYCAP _IOR ('V', 0, struct v4l2_capability) #endif static int init(priv_t *priv) { int i; if (tv_param_immediate == 1) tv_param_noaudio = 1; priv->video_ringbuffer = NULL; priv->video_timebuffer = NULL; priv->video_avg_buffer = NULL; priv->audio_ringbuffer = NULL; priv->audio_skew_buffer = NULL; priv->video_fd = open(priv->video_device, O_RDWR); mp_msg(MSGT_TV, MSGL_DBG2, "Video fd: %d, %p\n", priv->video_fd, priv->video_device); if (priv->video_fd == -1) { mp_msg(MSGT_TV, MSGL_ERR, "unable to open '%s': %s\n", priv->video_device, strerror(errno)); goto err; } /* check for v4l2 */ if (ioctl(priv->video_fd, VIDIOC_QUERYCAP, &priv->capability) == 0) { mp_msg(MSGT_TV, MSGL_ERR, "=================================================================\n"); mp_msg(MSGT_TV, MSGL_ERR, " WARNING: YOU ARE USING V4L DEMUXER WITH V4L2 DRIVERS!!!\n"); mp_msg(MSGT_TV, MSGL_ERR, " As the V4L1 compatibility layer is broken, this may not work.\n"); mp_msg(MSGT_TV, MSGL_ERR, " If you encounter any problems, use driver=v4l2 instead.\n"); mp_msg(MSGT_TV, MSGL_ERR, " Bugreports on driver=v4l with v4l2 drivers will be ignored.\n"); mp_msg(MSGT_TV, MSGL_ERR, "=================================================================\n"); } /* get capabilities (priv->capability is needed!) */ if (ioctl(priv->video_fd, VIDIOCGCAP, &priv->capability) == -1) { mp_msg(MSGT_TV, MSGL_ERR, "ioctl get capabilites failed: %s\n", strerror(errno)); goto err; } fcntl(priv->video_fd, F_SETFD, FD_CLOEXEC); mp_msg(MSGT_TV, MSGL_INFO, "Selected device: %s\n", priv->capability.name); mp_msg(MSGT_TV, MSGL_INFO, " Capabilites: "); for (i = 0; device_cap2name[i] != NULL; i++) if (priv->capability.type & (1 << i)) mp_msg(MSGT_TV, MSGL_INFO, "%s ", device_cap2name[i]); mp_msg(MSGT_TV, MSGL_INFO, "\n"); mp_msg(MSGT_TV, MSGL_INFO, " Device type: %d\n", priv->capability.type); mp_msg(MSGT_TV, MSGL_INFO, " Supported sizes: %dx%d => %dx%d\n", priv->capability.minwidth, priv->capability.minheight, priv->capability.maxwidth, priv->capability.maxheight); priv->width = priv->capability.minwidth; priv->height = priv->capability.minheight; /* somewhere here could disable tv_param_mjpeg, if it is not a capability */ /* initialize if necessary */ if ( tv_param_mjpeg ) { struct mjpeg_params bparm; struct mjpeg_requestbuffers breq; /* buffer requests */ if (ioctl(priv->video_fd, MJPIOC_G_PARAMS, &bparm) < 0) { mp_msg(MSGT_TV, MSGL_ERR, " MJP: Error getting video parameters: %s\n", strerror(errno)); goto err; } mp_msg(MSGT_TV, MSGL_INFO, " MJP: previous params: x: %d, y: %d, w: %d, h: %d, decim: %d, fields: %d,\n", bparm.img_x, bparm.img_y, bparm.img_width, bparm.img_height, bparm.decimation, bparm.field_per_buff); mp_msg(MSGT_TV, MSGL_INFO, " MJP: HorDcm: %d, VerDcm: %d, TmpDcm: %d\n", bparm.HorDcm, bparm.VerDcm, bparm.TmpDcm); bparm.input = tv_param_input; /* tv */ if (!strcasecmp(tv_param_norm, "pal")) bparm.norm = 0; /* PAL */ else if (!strcasecmp(tv_param_norm, "ntsc")) bparm.norm = 1; /* NTSC */ else if (!strcasecmp(tv_param_norm, "secam")) bparm.norm = 2; /* SECAM */ bparm.quality = tv_param_quality; bparm.decimation = tv_param_decimation; mp_msg(MSGT_TV, MSGL_INFO, " MJP: setting params to decimation: %d, quality: %d\n", bparm.decimation, bparm.quality); if (ioctl(priv->video_fd, MJPIOC_S_PARAMS, &bparm) < 0) { mp_msg(MSGT_TV, MSGL_ERR, " MJP: Error setting video parameters: %s\n", strerror(errno)); goto err; } if (ioctl(priv->video_fd, MJPIOC_G_PARAMS, &bparm) < 0) { mp_msg(MSGT_TV, MSGL_ERR, " MJP: Error getting video parameters: %s\n", strerror(errno)); goto err; } mp_msg(MSGT_TV, MSGL_INFO, " MJP: current params: x: %d, y: %d, w: %d, h: %d, decim: %d, fields: %d,\n", bparm.img_x, bparm.img_y, bparm.img_width, bparm.img_height, bparm.decimation, bparm.field_per_buff); mp_msg(MSGT_TV, MSGL_INFO, " MJP: HorDcm: %d, VerDcm: %d, TmpDcm: %d\n", bparm.HorDcm, bparm.VerDcm, bparm.TmpDcm); breq.count = 64; priv -> nbuf = breq.count; priv->mbuf.frames = priv -> nbuf; priv->mjpeg_bufsize = 256*1024; if (tv_param_buffer_size >= 0) { priv->mjpeg_bufsize = tv_param_buffer_size*1024; } breq.size = priv -> mjpeg_bufsize; if (ioctl(priv->video_fd, MJPIOC_REQBUFS,&(breq)) < 0) { mp_msg (MSGT_TV, MSGL_ERR, " MJP: Error requesting video buffers: %s\n", strerror(errno)); goto err; } mp_msg(MSGT_TV, MSGL_INFO, " MJP: Got %ld buffers of size %ld KB\n", breq.count, breq.size/1024); priv -> mmap = mmap(0, breq.count * breq.size, PROT_READ|PROT_WRITE, MAP_SHARED, priv->video_fd, 0); if (priv -> mmap == MAP_FAILED) { mp_msg(MSGT_TV, MSGL_INFO, " MJP: Error mapping video buffers: %s\n", strerror(errno)); goto err; } } mp_msg(MSGT_TV, MSGL_INFO, " Inputs: %d\n", priv->capability.channels); priv->channels = calloc(priv->capability.channels, sizeof(struct video_channel)); if (!priv->channels) goto malloc_failed; memset(priv->channels, 0, sizeof(struct video_channel)*priv->capability.channels); for (i = 0; i < priv->capability.channels; i++) { priv->channels[i].channel = i; if (ioctl(priv->video_fd, VIDIOCGCHAN, &priv->channels[i]) == -1) { mp_msg(MSGT_TV, MSGL_ERR, "ioctl get channel failed: %s\n", strerror(errno)); break; } mp_msg(MSGT_TV, MSGL_INFO, " %d: %s: %s%s%s%s (tuner:%d, norm:%s)\n", i, priv->channels[i].name, (priv->channels[i].flags & VIDEO_VC_TUNER) ? "tuner " : "", (priv->channels[i].flags & VIDEO_VC_AUDIO) ? "audio " : "", (priv->channels[i].flags & VIDEO_TYPE_TV) ? "tv " : "", (priv->channels[i].flags & VIDEO_TYPE_CAMERA) ? "camera " : "", priv->channels[i].tuners, norm2name(priv->channels[i].norm)); } priv->act_channel = 0; if (!(priv->capability.type & VID_TYPE_CAPTURE)) { mp_msg(MSGT_TV, MSGL_ERR, "Only grabbing supported (for overlay use another program)\n"); goto err; } if ( !tv_param_mjpeg ) { /* map grab buffer */ if (ioctl(priv->video_fd, VIDIOCGMBUF, &priv->mbuf) == -1) { mp_msg(MSGT_TV, MSGL_ERR, "ioctl get mbuf failed: %s\n", strerror(errno)); goto err; } mp_msg(MSGT_TV, MSGL_V, "mbuf: size=%d, frames=%d\n", priv->mbuf.size, priv->mbuf.frames); priv->mmap = mmap(0, priv->mbuf.size, PROT_READ|PROT_WRITE, MAP_SHARED, priv->video_fd, 0); if (priv->mmap == (unsigned char *)-1) { mp_msg(MSGT_TV, MSGL_ERR, "Unable to map memory for buffers: %s\n", strerror(errno)); goto err; } mp_msg(MSGT_TV, MSGL_DBG2, "our buffer: %p\n", priv->mmap); /* num of buffers */ priv->nbuf = priv->mbuf.frames; /* video buffers */ priv->buf = calloc(priv->nbuf, sizeof(struct video_mmap)); if (!priv->buf) goto malloc_failed; memset(priv->buf, 0, priv->nbuf * sizeof(struct video_mmap)); } /* init v4l audio even when we don't capture */ init_v4l_audio(priv); if (!priv->capability.audios && !tv_param_force_audio) tv_param_noaudio = 1; /* audio init */ if (!tv_param_noaudio) { #if defined(HAVE_ALSA9) || defined(HAVE_ALSA1X) if (tv_param_alsa) audio_in_init(&priv->audio_in, AUDIO_IN_ALSA); else audio_in_init(&priv->audio_in, AUDIO_IN_OSS); #else audio_in_init(&priv->audio_in, AUDIO_IN_OSS); #endif if (priv->audio_device) { audio_in_set_device(&priv->audio_in, priv->audio_device); } if (tv_param_audio_id < priv->capability.audios) priv->audio_id = tv_param_audio_id; else priv->audio_id = 0; audio_in_set_samplerate(&priv->audio_in, 44100); if (priv->capability.audios) { audio_in_set_channels(&priv->audio_in, priv->audio_channels[priv->audio_id]); } else { if (tv_param_forcechan >= 0) { audio_in_set_channels(&priv->audio_in, tv_param_forcechan); } else { audio_in_set_channels(&priv->audio_in, 2); } } if (audio_in_setup(&priv->audio_in) < 0) return 0; setup_audio_buffer_sizes(priv); } return(1); malloc_failed: if (priv->channels) free(priv->channels); if (priv->buf) free(priv->buf); err: if (priv->video_fd != -1) close(priv->video_fd); return(0); } static int uninit(priv_t *priv) { unsigned long num; priv->shutdown = 1; mp_msg(MSGT_TV, MSGL_V, "Waiting for threads to finish... "); if (!tv_param_noaudio) { pthread_join(priv->audio_grabber_thread, NULL); pthread_mutex_destroy(&priv->audio_starter); pthread_mutex_destroy(&priv->skew_mutex); } pthread_mutex_destroy(&priv->video_buffer_mutex); pthread_join(priv->video_grabber_thread, NULL); mp_msg(MSGT_TV, MSGL_V, "done\n"); if (priv->capability.audios) { priv->audio[priv->audio_id].flags |= VIDEO_AUDIO_MUTE; ioctl(priv->video_fd, VIDIOCSAUDIO, &priv->audio[priv->audio_id]); } if ( tv_param_mjpeg ) { num = -1; if (ioctl(priv->video_fd, MJPIOC_QBUF_CAPT, &num) < 0) { mp_msg(MSGT_TV, MSGL_ERR, "\n MJP: ioctl MJPIOC_QBUF_CAPT failed: %s\n", strerror(errno)); } } else { // We need to munmap as close don't close mem mappings if(munmap(priv->mmap,priv->mbuf.size)) mp_msg(MSGT_TV, MSGL_ERR, "Munmap failed: %s\n",strerror(errno)); } if(close(priv->video_fd)) mp_msg(MSGT_TV, MSGL_ERR, "Close tv failed: %s\n",strerror(errno)); audio_in_uninit(&priv->audio_in); if (priv->video_ringbuffer) { int i; for (i = 0; i < priv->video_buffer_size_current; i++) { free(priv->video_ringbuffer[i]); } free(priv->video_ringbuffer); } if (priv->video_timebuffer) free(priv->video_timebuffer); if (priv->video_avg_buffer) free(priv->video_avg_buffer); if (!tv_param_noaudio) { if (priv->audio_ringbuffer) free(priv->audio_ringbuffer); if (priv->audio_skew_buffer) free(priv->audio_skew_buffer); } return(1); } static int get_capture_buffer_size(priv_t *priv) { int bufsize, cnt; if (tv_param_buffer_size >= 0) { bufsize = tv_param_buffer_size*1024*1024; } else { #ifdef HAVE_SYS_SYSINFO_H struct sysinfo si; sysinfo(&si); if (si.totalram<2*1024*1024) { bufsize = 1024*1024; } else { bufsize = si.totalram/2; } #else bufsize = 16*1024*1024; #endif } cnt = bufsize/(priv->height*priv->bytesperline); if (cnt < 2) cnt = 2; return cnt; } static int start(priv_t *priv) { int i; int bytes_per_sample; if (ioctl(priv->video_fd, VIDIOCGPICT, &priv->picture) == -1) { mp_msg(MSGT_TV, MSGL_ERR, "ioctl get picture failed: %s\n", strerror(errno)); return(0); } priv->picture.palette = format2palette(priv->format); priv->picture.depth = palette2depth(priv->picture.palette); if (priv->format != IMGFMT_BGR15) { priv->bytesperline = priv->width * priv->picture.depth / 8; } else { priv->bytesperline = priv->width * 2; } mp_msg(MSGT_TV, MSGL_V, "Picture values:\n"); mp_msg(MSGT_TV, MSGL_V, " Depth: %d, Palette: %s (Format: %s)\n", priv->picture.depth, PALETTE(priv->picture.palette), vo_format_name(priv->format)); mp_msg(MSGT_TV, MSGL_V, " Brightness: %d, Hue: %d, Colour: %d, Contrast: %d\n", priv->picture.brightness, priv->picture.hue, priv->picture.colour, priv->picture.contrast); if (ioctl(priv->video_fd, VIDIOCSPICT, &priv->picture) == -1) { mp_msg(MSGT_TV, MSGL_ERR, "ioctl set picture failed: %s\n", strerror(errno)); } if ( !tv_param_mjpeg ) { priv->nbuf = priv->mbuf.frames; for (i=0; i < priv->nbuf; i++) { priv->buf[i].format = priv->picture.palette; priv->buf[i].frame = i; priv->buf[i].width = priv->width; priv->buf[i].height = priv->height; mp_msg(MSGT_TV, MSGL_DBG2, "buffer: %d => %p\n", i, &priv->buf[i]); } } #if 0 { struct video_play_mode pmode; pmode.mode = VID_PLAY_NORMAL; pmode.p1 = 1; pmode.p2 = 0; if (ioctl(priv->video_fd, VIDIOCSPLAYMODE, &pmode) == -1) { mp_msg(MSGT_TV, MSGL_ERR, "ioctl set play mode failed: %s\n", strerror(errno)); // return(0); } } #endif #if 0 { struct video_window win; win.x = 0; win.y = 0; win.width = priv->width; win.height = priv->height; win.chromakey = -1; win.flags = 0; //win.clipcount = 0; ioctl(priv->video_fd, VIDIOCSWIN, &win); } // initialize video capture if (ioctl(priv->video_fd, VIDIOCCAPTURE, &one) == -1) { mp_msg(MSGT_TV, MSGL_ERR, "FATAL: ioctl ccapture failed: %s\n", strerror(errno)); return(0); } #endif /* setup audio parameters */ if (!tv_param_noaudio) { setup_audio_buffer_sizes(priv); bytes_per_sample = priv->audio_in.bytes_per_sample; priv->audio_skew_buffer = calloc(priv->aud_skew_cnt, sizeof(long long)); if (!priv->audio_skew_buffer) { mp_msg(MSGT_TV, MSGL_ERR, "cannot allocate skew buffer: %s\n", strerror(errno)); return 0; } priv->audio_ringbuffer = calloc(priv->audio_in.blocksize, priv->audio_buffer_size); if (!priv->audio_ringbuffer) { mp_msg(MSGT_TV, MSGL_ERR, "cannot allocate audio buffer: %s\n", strerror(errno)); return 0; } priv->audio_secs_per_block = (double)priv->audio_in.blocksize/(priv->audio_in.samplerate *priv->audio_in.channels *bytes_per_sample); priv->audio_head = 0; priv->audio_tail = 0; priv->audio_cnt = 0; priv->audio_drop = 0; priv->audio_skew = 0; priv->audio_skew_total = 0; priv->audio_recv_blocks_total = 0; priv->audio_sent_blocks_total = 0; } /* setup video parameters */ if (priv->immediate_mode) { priv->video_buffer_size_max = VID_BUF_SIZE_IMMEDIATE; } else { priv->video_buffer_size_max = get_capture_buffer_size(priv); } priv->video_buffer_size_current = 0; if (!tv_param_noaudio) { if (priv->video_buffer_size_max < 3.0*priv->fps*priv->audio_secs_per_block) { mp_msg(MSGT_TV, MSGL_ERR, "Video buffer shorter than 3 times audio frame duration.\n" "You will probably experience heavy framedrops.\n"); } } mp_msg(MSGT_TV, MSGL_V, "Using a ring buffer for maximum %d frames, %d MB total size.\n", priv->video_buffer_size_max, priv->video_buffer_size_max*priv->height*priv->bytesperline/(1024*1024)); priv->video_ringbuffer = calloc(priv->video_buffer_size_max, sizeof(unsigned char*)); if (!priv->video_ringbuffer) { mp_msg(MSGT_TV, MSGL_ERR, "cannot allocate video buffer: %s\n", strerror(errno)); return 0; } for (i = 0; i < priv->video_buffer_size_max; i++) priv->video_ringbuffer[i] = NULL; priv->video_timebuffer = calloc(priv->video_buffer_size_max, sizeof(long long)); if (!priv->video_timebuffer) { mp_msg(MSGT_TV, MSGL_ERR, "cannot allocate time buffer: %s\n", strerror(errno)); return 0; } priv->video_avg_buffer = malloc(sizeof(long long) * VIDEO_AVG_BUFFER_SIZE); if (!priv->video_avg_buffer) { mp_msg(MSGT_TV, MSGL_ERR, "cannot allocate period buffer: %s\n", strerror(errno)); return 0; } priv->video_interval_sum = (1e6/priv->fps)*VIDEO_AVG_BUFFER_SIZE; for (i = 0; i < VIDEO_AVG_BUFFER_SIZE; i++) { priv->video_avg_buffer[i] = 1e6/priv->fps; } priv->video_avg_ptr = 0; priv->video_head = 0; priv->video_tail = 0; priv->video_cnt = 0; priv->first = 1; if (priv->capability.audios) { /* enable audio */ if (tv_param_volume >= 0) priv->audio[priv->audio_id].volume = tv_param_volume; if (tv_param_bass >= 0) priv->audio[priv->audio_id].bass = tv_param_bass; if (tv_param_treble >= 0) priv->audio[priv->audio_id].treble = tv_param_treble; if (tv_param_balance >= 0) priv->audio[priv->audio_id].balance = tv_param_balance; priv->audio[priv->audio_id].flags &= ~VIDEO_AUDIO_MUTE; mp_msg(MSGT_TV, MSGL_V, "Enabling tv audio. Requested setup is:\n"); mp_msg(MSGT_TV, MSGL_V, "id=%d vol=%d bass=%d treble=%d balance=%d mode=%s", priv->audio_id, priv->audio[priv->audio_id].volume, priv->audio[priv->audio_id].bass, priv->audio[priv->audio_id].treble, priv->audio[priv->audio_id].balance, audio_mode2name(priv->audio[priv->audio_id].mode)); mp_msg(MSGT_TV, MSGL_V, " chan=%d\n", priv->audio_channels[priv->audio_id]); ioctl(priv->video_fd, VIDIOCSAUDIO, &priv->audio[priv->audio_id]); } /* launch capture threads */ priv->shutdown = 0; if (!tv_param_noaudio) { pthread_mutex_init(&priv->audio_starter, NULL); pthread_mutex_init(&priv->skew_mutex, NULL); pthread_mutex_lock(&priv->audio_starter); pthread_create(&priv->audio_grabber_thread, NULL, audio_grabber, priv); } pthread_mutex_init(&priv->video_buffer_mutex, NULL); /* we'll launch the video capture later, when a first request for a frame arrives */ return(1); } static int control(priv_t *priv, int cmd, void *arg) { mp_msg(MSGT_TV, MSGL_DBG2, "\ndebug: control(priv=%p, cmd=%d, arg=%p)\n", priv, cmd, arg); switch(cmd) { /* ========== GENERIC controls =========== */ case TVI_CONTROL_IS_VIDEO: { if (priv->capability.type & VID_TYPE_CAPTURE) return(TVI_CONTROL_TRUE); return(TVI_CONTROL_FALSE); } case TVI_CONTROL_IS_AUDIO: if (tv_param_force_audio) return(TVI_CONTROL_TRUE); if (priv->channels[priv->act_channel].flags & VIDEO_VC_AUDIO) { return(TVI_CONTROL_TRUE); } return(TVI_CONTROL_FALSE); case TVI_CONTROL_IS_TUNER: { // if (priv->capability.type & VID_TYPE_TUNER) if (priv->channels[priv->act_channel].flags & VIDEO_VC_TUNER) return(TVI_CONTROL_TRUE); return(TVI_CONTROL_FALSE); } /* ========== VIDEO controls =========== */ case TVI_CONTROL_VID_GET_FORMAT: { int output_fmt = -1; output_fmt = priv->format; if ( tv_param_mjpeg ) { mp_msg(MSGT_TV, MSGL_INFO, " MJP: setting sh_video->format to mjpg\n"); output_fmt = 0x47504a4d; output_fmt = 0x67706a6d; *(int *)arg = output_fmt; mp_msg(MSGT_TV, MSGL_V, "Output format: %s\n", "mjpg"); } else { *(int *)arg = output_fmt; mp_msg(MSGT_TV, MSGL_V, "Output format: %s\n", vo_format_name(output_fmt)); } return(TVI_CONTROL_TRUE); } case TVI_CONTROL_VID_SET_FORMAT: priv->format = *(int *)arg; // !HACK! v4l uses BGR format instead of RGB // and we have to correct this. Fortunately, // tv.c reads later the format back so we // can persuade it to use what we want. if (IMGFMT_IS_RGB(priv->format)) { priv->format &= ~IMGFMT_RGB_MASK; priv->format |= IMGFMT_BGR; } return(TVI_CONTROL_TRUE); case TVI_CONTROL_VID_GET_PLANES: *(int *)arg = 1; /* FIXME, also not needed at this time */ return(TVI_CONTROL_TRUE); case TVI_CONTROL_VID_GET_BITS: *(int *)arg = palette2depth(format2palette(priv->format)); return(TVI_CONTROL_TRUE); case TVI_CONTROL_VID_GET_WIDTH: *(int *)arg = priv->width; return(TVI_CONTROL_TRUE); case TVI_CONTROL_VID_CHK_WIDTH: { int req_width = *(int *)arg; mp_msg(MSGT_TV, MSGL_V, "Requested width: %d\n", req_width); if ((req_width >= priv->capability.minwidth) && (req_width <= priv->capability.maxwidth)) return(TVI_CONTROL_TRUE); return(TVI_CONTROL_FALSE); } case TVI_CONTROL_VID_SET_WIDTH: priv->width = *(int *)arg; return(TVI_CONTROL_TRUE); case TVI_CONTROL_VID_GET_HEIGHT: *(int *)arg = priv->height; return(TVI_CONTROL_TRUE); case TVI_CONTROL_VID_CHK_HEIGHT: { int req_height = *(int *)arg; mp_msg(MSGT_TV, MSGL_V, "Requested height: %d\n", req_height); if ((req_height >= priv->capability.minheight) && (req_height <= priv->capability.maxheight)) return(TVI_CONTROL_TRUE); return(TVI_CONTROL_FALSE); } case TVI_CONTROL_VID_SET_HEIGHT: priv->height = *(int *)arg; return(TVI_CONTROL_TRUE); case TVI_CONTROL_VID_GET_PICTURE: if (ioctl(priv->video_fd, VIDIOCGPICT, &priv->picture) == -1) { mp_msg(MSGT_TV, MSGL_ERR, "ioctl get picture failed: %s\n", strerror(errno)); return(TVI_CONTROL_FALSE); } return(TVI_CONTROL_TRUE); case TVI_CONTROL_VID_SET_PICTURE: if (ioctl(priv->video_fd, VIDIOCSPICT, &priv->picture) == -1) { mp_msg(MSGT_TV, MSGL_ERR, "ioctl get picture failed: %s\n", strerror(errno)); return(TVI_CONTROL_FALSE); } return(TVI_CONTROL_TRUE); case TVI_CONTROL_VID_SET_BRIGHTNESS: priv->picture.brightness = (327*(*(int *)arg+100)) + 68; return control(priv, TVI_CONTROL_VID_SET_PICTURE, 0); case TVI_CONTROL_VID_SET_HUE: priv->picture.hue = (327*(*(int *)arg+100)) + 68; return control(priv, TVI_CONTROL_VID_SET_PICTURE, 0); case TVI_CONTROL_VID_SET_SATURATION: priv->picture.colour = (327*(*(int *)arg+100)) + 68; return control(priv, TVI_CONTROL_VID_SET_PICTURE, 0); case TVI_CONTROL_VID_SET_CONTRAST: priv->picture.contrast = (327*(*(int *)arg+100)) + 68; return control(priv, TVI_CONTROL_VID_SET_PICTURE, 0); case TVI_CONTROL_VID_GET_BRIGHTNESS: if(!control(priv, TVI_CONTROL_VID_GET_PICTURE, 0)) return 0; *(int*)arg = ((int)priv->picture.brightness-68)/327-100; return 1; case TVI_CONTROL_VID_GET_HUE: if(!control(priv, TVI_CONTROL_VID_GET_PICTURE, 0)) return 0; *(int*)arg = ((int)priv->picture.hue-68)/327-100; return 1; case TVI_CONTROL_VID_GET_SATURATION: if(!control(priv, TVI_CONTROL_VID_GET_PICTURE, 0)) return 0; *(int*)arg = ((int)priv->picture.colour-68)/327-100; return 1; case TVI_CONTROL_VID_GET_CONTRAST: if(!control(priv, TVI_CONTROL_VID_GET_PICTURE, 0)) return 0; *(int*)arg = ((int)priv->picture.contrast-68)/327-100; return 1; case TVI_CONTROL_VID_GET_FPS: *(float *)arg=priv->fps; return(TVI_CONTROL_TRUE); /* ========== TUNER controls =========== */ case TVI_CONTROL_TUN_GET_FREQ: { unsigned long freq; if (ioctl(priv->video_fd, VIDIOCGFREQ, &freq) == -1) { mp_msg(MSGT_TV, MSGL_ERR, "ioctl get freq failed: %s\n", strerror(errno)); return(TVI_CONTROL_FALSE); } /* tuner uses khz not mhz ! */ // if (priv->tuner.flags & VIDEO_TUNER_LOW) // freq /= 1000; *(unsigned long *)arg = freq; return(TVI_CONTROL_TRUE); } case TVI_CONTROL_TUN_SET_FREQ: { /* argument is in MHz ! */ unsigned long freq = *(unsigned long *)arg; if (priv->capability.audios) { priv->audio[priv->audio_id].flags |= VIDEO_AUDIO_MUTE; ioctl(priv->video_fd, VIDIOCSAUDIO, &priv->audio[priv->audio_id]); } mp_msg(MSGT_TV, MSGL_V, "requested frequency: %.3f\n", (float)freq/16); /* tuner uses khz not mhz ! */ // if (priv->tuner.flags & VIDEO_TUNER_LOW) // freq *= 1000; // mp_msg(MSGT_TV, MSGL_V, " requesting from driver: freq=%.3f\n", (float)freq/16); if (ioctl(priv->video_fd, VIDIOCSFREQ, &freq) == -1) { mp_msg(MSGT_TV, MSGL_ERR, "ioctl set freq failed: %s\n", strerror(errno)); return(TVI_CONTROL_FALSE); } usleep(100000); // wait to suppress noise during switching if (priv->capability.audios) { priv->audio[priv->audio_id].flags &= ~VIDEO_AUDIO_MUTE; ioctl(priv->video_fd, VIDIOCSAUDIO, &priv->audio[priv->audio_id]); } return(TVI_CONTROL_TRUE); } case TVI_CONTROL_TUN_GET_TUNER: { if (ioctl(priv->video_fd, VIDIOCGTUNER, &priv->tuner) == -1) { mp_msg(MSGT_TV, MSGL_ERR, "ioctl get tuner failed: %s\n", strerror(errno)); return(TVI_CONTROL_FALSE); } mp_msg(MSGT_TV, MSGL_V, "Tuner (%s) range: %lu -> %lu\n", priv->tuner.name, priv->tuner.rangelow, priv->tuner.rangehigh); return(TVI_CONTROL_TRUE); } case TVI_CONTROL_TUN_SET_TUNER: { if (ioctl(priv->video_fd, VIDIOCSTUNER, &priv->tuner) == -1) { mp_msg(MSGT_TV, MSGL_ERR, "ioctl set tuner failed: %s\n", strerror(errno)); return(TVI_CONTROL_FALSE); } return(TVI_CONTROL_TRUE); } case TVI_CONTROL_TUN_SET_NORM: { int req_mode = *(int *)arg; if ((req_mode != TV_NORM_PAL) && (req_mode != TV_NORM_NTSC) && (req_mode != TV_NORM_SECAM) && (req_mode != TV_NORM_PALNC) && (req_mode != TV_NORM_PALM) && (req_mode != TV_NORM_PALN) && (req_mode != TV_NORM_NTSCJP)) { mp_msg(MSGT_TV, MSGL_ERR, "Unknown norm!\n"); return(TVI_CONTROL_FALSE); } if (priv->channels[priv->act_channel].flags & VIDEO_VC_TUNER) { int prev_mode; control(priv, TVI_CONTROL_TUN_GET_TUNER, 0); if (((req_mode == TV_NORM_PAL || req_mode == TV_NORM_PALNC || req_mode == TV_NORM_PALN) && !(priv->tuner.flags & VIDEO_TUNER_PAL)) || ((req_mode == TV_NORM_NTSC || req_mode == TV_NORM_NTSCJP || req_mode == TV_NORM_PALM) && !(priv->tuner.flags & VIDEO_TUNER_NTSC)) || ((req_mode == TV_NORM_SECAM) && !(priv->tuner.flags & VIDEO_TUNER_SECAM))) { mp_msg(MSGT_TV, MSGL_ERR, "Tuner isn't capable to set norm!\n"); return(TVI_CONTROL_FALSE); } prev_mode = priv->tuner.mode; switch(req_mode) { case TV_NORM_PAL: case TV_NORM_PALNC: case TV_NORM_PALN: priv->tuner.mode = VIDEO_MODE_PAL; break; case TV_NORM_NTSC: case TV_NORM_NTSCJP: case TV_NORM_PALM: priv->tuner.mode = VIDEO_MODE_NTSC; break; case TV_NORM_SECAM: priv->tuner.mode = VIDEO_MODE_SECAM; break; } if (control(priv, TVI_CONTROL_TUN_SET_TUNER, &priv->tuner) != TVI_CONTROL_TRUE) { // norm setting failed, but maybe it's only because it's fixed if (priv->tuner.mode != prev_mode) return(TVI_CONTROL_FALSE); // no it really failed } } switch(req_mode) { case TV_NORM_PAL: priv->channels[priv->act_channel].norm = VIDEO_MODE_PAL; break; case TV_NORM_NTSC: priv->channels[priv->act_channel].norm = VIDEO_MODE_NTSC; break; case TV_NORM_SECAM: priv->channels[priv->act_channel].norm = VIDEO_MODE_SECAM; break; case TV_NORM_PALNC: priv->channels[priv->act_channel].norm = 3; break; case TV_NORM_PALM: priv->channels[priv->act_channel].norm = 4; break; case TV_NORM_PALN: priv->channels[priv->act_channel].norm = 5; break; case TV_NORM_NTSCJP: priv->channels[priv->act_channel].norm = 6; break; } if (ioctl(priv->video_fd, VIDIOCSCHAN, &priv->channels[priv->act_channel]) == -1) { mp_msg(MSGT_TV, MSGL_ERR, "ioctl set chan failed: %s\n", strerror(errno)); return(TVI_CONTROL_FALSE); } if (ioctl(priv->video_fd, VIDIOCGCAP, &priv->capability) == -1) { mp_msg(MSGT_TV, MSGL_ERR, "ioctl get capabilites failed: %s\n", strerror(errno)); return(TVI_CONTROL_FALSE); } if(req_mode == TV_NORM_PAL || req_mode == TV_NORM_SECAM || req_mode == TV_NORM_PALN || req_mode == TV_NORM_PALNC) { priv->fps = PAL_FPS; } if(req_mode == TV_NORM_NTSC || req_mode == TV_NORM_NTSCJP || req_mode == TV_NORM_PALM) { priv->fps = NTSC_FPS; } if(priv->height > priv->capability.maxheight) { priv->height = priv->capability.maxheight; } if(priv->width > priv->capability.maxwidth) { priv->width = priv->capability.maxwidth; } return(TVI_CONTROL_TRUE); } case TVI_CONTROL_TUN_GET_NORM: { *(int *)arg = priv->tuner.mode; return(TVI_CONTROL_TRUE); } /* ========== AUDIO controls =========== */ case TVI_CONTROL_AUD_GET_FORMAT: { *(int *)arg = AF_FORMAT_S16_LE; return(TVI_CONTROL_TRUE); } case TVI_CONTROL_AUD_GET_CHANNELS: { *(int *)arg = priv->audio_in.channels; return(TVI_CONTROL_TRUE); } case TVI_CONTROL_AUD_GET_SAMPLERATE: { *(int *)arg = priv->audio_in.samplerate; return(TVI_CONTROL_TRUE); } case TVI_CONTROL_AUD_GET_SAMPLESIZE: { *(int *)arg = priv->audio_in.bytes_per_sample; return(TVI_CONTROL_TRUE); } case TVI_CONTROL_AUD_SET_SAMPLERATE: { if (audio_in_set_samplerate(&priv->audio_in, *(int *)arg) < 0) return TVI_CONTROL_FALSE; setup_audio_buffer_sizes(priv); return(TVI_CONTROL_TRUE); } /* ========== SPECIFIC controls =========== */ case TVI_CONTROL_SPC_GET_INPUT: { int req_chan = *(int *)arg; int i; for (i = 0; i < priv->capability.channels; i++) { if (priv->channels[i].channel == req_chan) break; } priv->act_channel = i; if (ioctl(priv->video_fd, VIDIOCGCHAN, &priv->channels[i]) == -1) { mp_msg(MSGT_TV, MSGL_ERR, "ioctl get channel failed: %s\n", strerror(errno)); return(TVI_CONTROL_FALSE); } return(TVI_CONTROL_TRUE); } case TVI_CONTROL_SPC_SET_INPUT: { struct video_channel chan; int req_chan = *(int *)arg; int i; if (req_chan >= priv->capability.channels) { mp_msg(MSGT_TV, MSGL_ERR, "Invalid input requested: %d, valid: 0-%d\n", req_chan, priv->capability.channels - 1); return(TVI_CONTROL_FALSE); } for (i = 0; i < priv->capability.channels; i++) { if (priv->channels[i].channel == req_chan) chan = priv->channels[i]; } if (ioctl(priv->video_fd, VIDIOCSCHAN, &chan) == -1) { mp_msg(MSGT_TV, MSGL_ERR, "ioctl set chan failed: %s\n", strerror(errno)); return(TVI_CONTROL_FALSE); } mp_msg(MSGT_TV, MSGL_INFO, "Using input '%s'\n", chan.name); priv->act_channel = i; /* update tuner state */ // if (priv->capability.type & VID_TYPE_TUNER) if (priv->channels[priv->act_channel].flags & VIDEO_VC_TUNER) control(priv, TVI_CONTROL_TUN_GET_TUNER, 0); /* update local channel list */ control(priv, TVI_CONTROL_SPC_GET_INPUT, &req_chan); return(TVI_CONTROL_TRUE); case TVI_CONTROL_IMMEDIATE: priv->immediate_mode = 1; return(TVI_CONTROL_TRUE); } } return(TVI_CONTROL_UNKNOWN); } // copies a video frame // for RGB (i.e. BGR in mplayer) flips the image upside down // for YV12 swaps the 2nd and 3rd plane static inline void copy_frame(priv_t *priv, unsigned char *dest, unsigned char *source) { int i; unsigned char *sptr; // YV12 uses VIDEO_PALETTE_YUV420P, but the planes are swapped if (priv->format == IMGFMT_YV12) { memcpy(dest, source, priv->width * priv->height); memcpy(dest+priv->width * priv->height*5/4, source+priv->width * priv->height, priv->width * priv->height/4); memcpy(dest+priv->width * priv->height, source+priv->width * priv->height*5/4, priv->width * priv->height/4); return; } switch (priv->picture.palette) { case VIDEO_PALETTE_RGB24: case VIDEO_PALETTE_RGB32: case VIDEO_PALETTE_RGB555: case VIDEO_PALETTE_RGB565: sptr = source + (priv->height-1)*priv->bytesperline; for (i = 0; i < priv->height; i++) { memcpy(dest, sptr, priv->bytesperline); dest += priv->bytesperline; sptr -= priv->bytesperline; } break; case VIDEO_PALETTE_UYVY: case VIDEO_PALETTE_YUV420P: default: memcpy(dest, source, priv->bytesperline * priv->height); } } // maximum skew change, in frames #define MAX_SKEW_DELTA 0.6 static void *video_grabber(void *data) { #define MAXTOL (priv->nbuf) priv_t *priv = (priv_t*)data; struct timeval curtime; long long skew, prev_skew, xskew, interval, prev_interval; int frame; int i; int framecount; int tolerance; unsigned long num; /* start the capture process */ if ( tv_param_mjpeg ) { mp_msg(MSGT_TV, MSGL_INFO, " MJP: gonna capture ! \n"); for (i=0; i < priv->nbuf; i++) { num = i; if (ioctl(priv->video_fd, MJPIOC_QBUF_CAPT, &num) < 0) { mp_msg(MSGT_TV, MSGL_ERR, "\n MJP: ioctl MJPIOC_QBUF_CAPT b failed: %s\n", strerror(errno)); } } } else { for (i=0; i < priv->nbuf; i++) { if (ioctl(priv->video_fd, VIDIOCMCAPTURE, &priv->buf[i]) == -1) { mp_msg(MSGT_TV, MSGL_ERR, "\nioctl mcapture failed: %s\n", strerror(errno)); } } } gettimeofday(&curtime, NULL); priv->starttime = (long long)1e6*curtime.tv_sec + curtime.tv_usec; priv->audio_skew_measure_time = 0; pthread_mutex_unlock(&priv->audio_starter); xskew = 0; skew = 0; interval = 0; prev_interval = 0; prev_skew = 0; tolerance = MAXTOL; for (framecount = 0; !priv->shutdown;) { for (i = 0; i < priv->nbuf && !priv->shutdown; i++, framecount++) { if (priv->immediate_mode) { while (priv->video_cnt == priv->video_buffer_size_max) { usleep(10000); if (priv->shutdown) { return NULL; } } } frame = i; if ( tv_param_mjpeg ) { while (ioctl(priv->video_fd, MJPIOC_SYNC, &priv->buf[frame].frame) < 0 && (errno == EAGAIN || errno == EINTR)); } else { while (ioctl(priv->video_fd, VIDIOCSYNC, &priv->buf[frame].frame) < 0 && (errno == EAGAIN || errno == EINTR)); } mp_dbg(MSGT_TV, MSGL_DBG3, "\npicture sync failed\n"); gettimeofday(&curtime, NULL); if (!priv->immediate_mode) { interval = (long long)1e6*curtime.tv_sec + curtime.tv_usec - priv->starttime; } else { interval = (long long)1e6*framecount/priv->fps; } if (!priv->immediate_mode) { long long period, orig_interval; if (tolerance == 0) { if (interval - prev_interval == 0) { mp_msg(MSGT_TV, MSGL_V, "\nvideo capture thread: frame delta = 0\n"); } else if ((interval - prev_interval < (long long)0.85e6/priv->fps) || (interval - prev_interval > (long long)1.15e6/priv->fps) ) { mp_msg(MSGT_TV, MSGL_V, "\nvideo capture thread: frame delta ~ %.1lf fps\n", (double)1e6/(interval - prev_interval)); } } // correct the rate fluctuations on a small scale orig_interval = interval; period = priv->video_interval_sum/VIDEO_AVG_BUFFER_SIZE; if (interval - prev_interval > 105*period/100) { if (tolerance > 0) { mp_msg(MSGT_TV, MSGL_DBG3, "correcting timestamp\n"); interval = prev_interval + priv->video_interval_sum/VIDEO_AVG_BUFFER_SIZE; tolerance--; } else { mp_msg(MSGT_TV, MSGL_DBG3, "bad - frames were dropped\n"); tolerance = MAXTOL; } } else { if (tolerance < MAXTOL) { mp_msg(MSGT_TV, MSGL_DBG3, "fluctuation overcome\n"); } tolerance = MAXTOL; } priv->video_interval_sum -= priv->video_avg_buffer[priv->video_avg_ptr]; priv->video_avg_buffer[priv->video_avg_ptr++] = orig_interval-prev_interval; priv->video_interval_sum += orig_interval-prev_interval; if (priv->video_avg_ptr >= VIDEO_AVG_BUFFER_SIZE) priv->video_avg_ptr = 0; // fprintf(stderr, "fps: %lf\n", (double)1e6*VIDEO_AVG_BUFFER_SIZE/priv->video_interval_sum); // interpolate the skew in time pthread_mutex_lock(&priv->skew_mutex); xskew = priv->audio_skew + (interval - priv->audio_skew_measure_time)*priv->audio_skew_factor; pthread_mutex_unlock(&priv->skew_mutex); // correct extreme skew changes to avoid (especially) moving backwards in time if (xskew - prev_skew > (interval - prev_interval)*MAX_SKEW_DELTA) { skew = prev_skew + (interval - prev_interval)*MAX_SKEW_DELTA; } else if (xskew - prev_skew < -(interval - prev_interval)*MAX_SKEW_DELTA) { skew = prev_skew - (interval - prev_interval)*MAX_SKEW_DELTA; } else { skew = xskew; } } mp_msg(MSGT_TV, MSGL_DBG3, "\nfps = %lf, interval = %lf, a_skew = %f, corr_skew = %f\n", (interval != prev_interval) ? (double)1e6/(interval - prev_interval) : -1, (double)1e-6*interval, (double)1e-6*xskew, (double)1e-6*skew); mp_msg(MSGT_TV, MSGL_DBG3, "vcnt = %d, acnt = %d\n", priv->video_cnt, priv->audio_cnt); prev_skew = skew; prev_interval = interval; /* allocate a new buffer, if needed */ pthread_mutex_lock(&priv->video_buffer_mutex); if (priv->video_buffer_size_current < priv->video_buffer_size_max) { if (priv->video_cnt == priv->video_buffer_size_current) { unsigned char *newbuf = calloc(priv->bytesperline, priv->height); if (newbuf) { memmove(priv->video_ringbuffer+priv->video_tail+1, priv->video_ringbuffer+priv->video_tail, (priv->video_buffer_size_current-priv->video_tail)*sizeof(unsigned char *)); memmove(priv->video_timebuffer+priv->video_tail+1, priv->video_timebuffer+priv->video_tail, (priv->video_buffer_size_current-priv->video_tail)*sizeof(long long)); priv->video_ringbuffer[priv->video_tail] = newbuf; if ((priv->video_head >= priv->video_tail) && (priv->video_cnt > 0)) priv->video_head++; priv->video_buffer_size_current++; } } } pthread_mutex_unlock(&priv->video_buffer_mutex); if (priv->video_cnt == priv->video_buffer_size_current) { if (!priv->immediate_mode) { mp_msg(MSGT_TV, MSGL_ERR, "\nvideo buffer full - dropping frame\n"); } } else { if (priv->immediate_mode) { priv->video_timebuffer[priv->video_tail] = interval; } else { // compensate for audio skew // negative skew => there are more audio samples, increase interval // positive skew => less samples, shorten the interval priv->video_timebuffer[priv->video_tail] = interval - skew; } if ( tv_param_mjpeg ) copy_frame(priv, priv->video_ringbuffer[priv->video_tail], priv->mmap+(priv->mjpeg_bufsize)*i); else copy_frame(priv, priv->video_ringbuffer[priv->video_tail], priv->mmap+priv->mbuf.offsets[frame]); priv->video_tail = (priv->video_tail+1)%priv->video_buffer_size_current; priv->video_cnt++; } if ( tv_param_mjpeg ) { num = frame; if (ioctl(priv->video_fd, MJPIOC_QBUF_CAPT, &num) < 0) { mp_msg(MSGT_TV, MSGL_ERR, "\n MJP: ioctl MJPIOC_QBUF_CAPT end failed: %s\n", strerror(errno)); continue; } } else { if (ioctl(priv->video_fd, VIDIOCMCAPTURE, &priv->buf[frame]) == -1) { mp_msg(MSGT_TV, MSGL_ERR, "\nioctl mcapture failed: %s\n", strerror(errno)); continue; } } } } mp_msg(MSGT_TV, MSGL_INFO, " MJP: returning! \n"); return NULL; } static double grab_video_frame(priv_t *priv, char *buffer, int len) { double interval; if (priv->first) { pthread_create(&priv->video_grabber_thread, NULL, video_grabber, priv); priv->first = 0; } while (priv->video_cnt == 0) { usleep(10000); } pthread_mutex_lock(&priv->video_buffer_mutex); interval = (double)priv->video_timebuffer[priv->video_head]*1e-6; memcpy(buffer, priv->video_ringbuffer[priv->video_head], len); priv->video_cnt--; priv->video_head = (priv->video_head+1)%priv->video_buffer_size_current; pthread_mutex_unlock(&priv->video_buffer_mutex); return interval; } static int get_video_framesize(priv_t *priv) { return(priv->bytesperline * priv->height); } static void *audio_grabber(void *data) { priv_t *priv = (priv_t*)data; struct timeval tv; int i, audio_skew_ptr = 0; long long current_time, prev_skew = 0; pthread_mutex_lock(&priv->audio_starter); audio_in_start_capture(&priv->audio_in); for (i = 0; i < priv->aud_skew_cnt; i++) priv->audio_skew_buffer[i] = 0; for (; !priv->shutdown;) { if (audio_in_read_chunk(&priv->audio_in, priv->audio_ringbuffer+priv->audio_tail*priv->audio_in.blocksize) < 0) continue; gettimeofday(&tv, NULL); priv->audio_recv_blocks_total++; current_time = (long long)1e6*tv.tv_sec + tv.tv_usec - priv->starttime; priv->audio_skew_total -= priv->audio_skew_buffer[audio_skew_ptr]; priv->audio_skew_buffer[audio_skew_ptr] = current_time - 1e6*priv->audio_secs_per_block*priv->audio_recv_blocks_total; priv->audio_skew_total += priv->audio_skew_buffer[audio_skew_ptr]; audio_skew_ptr = (audio_skew_ptr+1) % priv->aud_skew_cnt; pthread_mutex_lock(&priv->skew_mutex); // linear interpolation - here we interpolate current skew value // from the moving average, which we expect to be in the middle // of the interval if (priv->audio_recv_blocks_total > priv->aud_skew_cnt) { priv->audio_skew = priv->audio_skew_total/priv->aud_skew_cnt; priv->audio_skew += (priv->audio_skew*priv->aud_skew_cnt)/(2*priv->audio_recv_blocks_total-priv->aud_skew_cnt); } else { // this smoothes the evolution of audio_skew at startup a bit 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); } // current skew factor (assuming linearity) // used for further interpolation in video_grabber // probably overkill but seems to be necessary for // stress testing by dropping half of the audio frames ;) // especially when using ALSA with large block sizes // where audio_skew remains a long while behind if ((priv->audio_skew_measure_time != 0) && (current_time - priv->audio_skew_measure_time != 0)) { priv->audio_skew_factor = (double)(priv->audio_skew-prev_skew)/(current_time - priv->audio_skew_measure_time); } else { priv->audio_skew_factor = 0.0; } priv->audio_skew_measure_time = current_time; prev_skew = priv->audio_skew; pthread_mutex_unlock(&priv->skew_mutex); if ((priv->audio_tail+1) % priv->audio_buffer_size == priv->audio_head) { mp_msg(MSGT_TV, MSGL_ERR, "\ntoo bad - dropping audio frame !\n"); priv->audio_drop++; } else { priv->audio_tail = (priv->audio_tail+1) % priv->audio_buffer_size; priv->audio_cnt++; } } return NULL; } static double grab_audio_frame(priv_t *priv, char *buffer, int len) { mp_dbg(MSGT_TV, MSGL_DBG2, "grab_audio_frame(priv=%p, buffer=%p, len=%d)\n", priv, buffer, len); if (priv->first) { pthread_create(&priv->video_grabber_thread, NULL, video_grabber, priv); priv->first = 0; } // compensate for dropped audio frames if (priv->audio_drop && (priv->audio_head == priv->audio_tail)) { priv->audio_drop--; priv->audio_sent_blocks_total++; memset(buffer, 0, len); return (double)priv->audio_sent_blocks_total*priv->audio_secs_per_block; } while (priv->audio_head == priv->audio_tail) { usleep(10000); } memcpy(buffer, priv->audio_ringbuffer+priv->audio_head*priv->audio_in.blocksize, len); priv->audio_head = (priv->audio_head+1) % priv->audio_buffer_size; priv->audio_cnt--; priv->audio_sent_blocks_total++; return (double)priv->audio_sent_blocks_total*priv->audio_secs_per_block; } static int get_audio_framesize(priv_t *priv) { return(priv->audio_in.blocksize); } #endif /* USE_TV */