tv.c

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/*
 TV Interface for MPlayer
 
 (C) Alex Beregszaszi
 
 API idea based on libvo2

 Feb 19, 2002: Significant rewrites by Charles R. Henrich ([e-mail])
				to add support for audio, and bktr *BSD support.

*/

#include <mplaylib.h>
#include <mplaylib.h>
#include <mplaylib.h>
#include <mplaylib.h>
#include <ctype.h>
#include <sys/time.h>

#include "config.h"


#include "mp_msg.h"
#include "help_mp.h"

#include "stream.h"
#include "libmpdemux/demuxer.h"
#include "libmpdemux/stheader.h"

#include "libaf/af_format.h"
#include "libmpcodecs/img_format.h"
#include "libavutil/avstring.h"
#include "osdep/timer.h"

#include "tv.h"

#include "frequencies.h"

tv_channels_t *tv_channel_list;
tv_channels_t *tv_channel_current, *tv_channel_last;
char *tv_channel_last_real;

/* enumerating drivers (like in stream.c) */
extern tvi_info_t tvi_info_dummy;
#ifdef HAVE_TV_V4L1
extern tvi_info_t tvi_info_v4l;
#endif
#ifdef HAVE_TV_V4L2
extern tvi_info_t tvi_info_v4l2;
#endif
#ifdef HAVE_TV_BSDBT848
extern tvi_info_t tvi_info_bsdbt848;
#endif

/** List of drivers in autodetection order */
static const tvi_info_t* tvi_driver_list[]={
#ifdef HAVE_TV_V4L2
    &tvi_info_v4l2,
#endif
#ifdef HAVE_TV_V4L1
    &tvi_info_v4l,
#endif
#ifdef HAVE_TV_BSDBT848
    &tvi_info_bsdbt848,
#endif
    &tvi_info_dummy,
    NULL
};

void tv_start_scan(tvi_handle_t *tvh, int start)
{
    mp_msg(MSGT_TV,MSGL_INFO,"start scan\n");
    tvh->tv_param->scan=start?1:0;
}

static void tv_scan(tvi_handle_t *tvh)
{
    unsigned int now;
    struct CHANLIST cl;
    tv_channels_t *tv_channel_tmp=NULL;
    tv_channels_t *tv_channel_add=NULL;
    tv_scan_t* scan;
    int found=0, index=1;
    
    scan = tvh->scan;
    now=GetTimer();
    if (!scan) {
        scan=calloc(1,sizeof(tv_scan_t));
        tvh->scan=scan;
        cl = tvh->chanlist_s[scan->channel_num];
        tv_set_freq(tvh, (unsigned long)(((float)cl.freq/1000)*16));
        scan->scan_timer=now+1e6*tvh->tv_param->scan_period;
    }
    if(scan->scan_timer>now)
        return;

    if (tv_get_signal(tvh)>tvh->tv_param->scan_threshold) {
        cl = tvh->chanlist_s[scan->channel_num];
        tv_channel_tmp=tv_channel_list;
        while (tv_channel_tmp) {
            index++;
            if (cl.freq==tv_channel_tmp->freq){
                found=1;
                break;
            }
            tv_channel_add=tv_channel_tmp;
            tv_channel_tmp=tv_channel_tmp->next;
        }
        if (!found) {
            mp_msg(MSGT_TV, MSGL_INFO, "Found new channel: %s (#%d). \n",cl.name,index);
            scan->new_channels++;
            tv_channel_tmp = malloc(sizeof(tv_channels_t));
            tv_channel_tmp->index=index;
            tv_channel_tmp->next=NULL;
            tv_channel_tmp->prev=tv_channel_add;
            tv_channel_tmp->freq=cl.freq;
            snprintf(tv_channel_tmp->name,sizeof(tv_channel_tmp->name),"ch%d",index);
            strncpy(tv_channel_tmp->number, cl.name, 5);
            tv_channel_tmp->number[4]='\0';
            if (!tv_channel_list)
                tv_channel_list=tv_channel_tmp;
            else {
                tv_channel_add->next=tv_channel_tmp;
                tv_channel_list->prev=tv_channel_tmp;
            }
        }else
            mp_msg(MSGT_TV, MSGL_INFO, "Found existing channel: %s-%s.\n",
                tv_channel_tmp->number,tv_channel_tmp->name);
    }
    scan->channel_num++;
    scan->scan_timer=now+1e6*tvh->tv_param->scan_period;
    if (scan->channel_num>=chanlists[tvh->chanlist].count) {
        tvh->tv_param->scan=0;
        mp_msg(MSGT_TV, MSGL_INFO, "TV scan end. Found %d new channels.\n", scan->new_channels);
        tv_channel_tmp=tv_channel_list;
        if(tv_channel_tmp){
            mp_msg(MSGT_TV,MSGL_INFO,"channels=");
            while(tv_channel_tmp){
                mp_msg(MSGT_TV,MSGL_INFO,"%s-%s",tv_channel_tmp->number,tv_channel_tmp->name);
                if(tv_channel_tmp->next)
                    mp_msg(MSGT_TV,MSGL_INFO,",");
                tv_channel_tmp=tv_channel_tmp->next;
            }
        }
        if (!tv_channel_current) tv_channel_current=tv_channel_list;
        if (tv_channel_current)
            tv_set_freq(tvh, (unsigned long)(((float)tv_channel_current->freq/1000)*16));
        free(tvh->scan);
        tvh->scan=NULL;
    }else{
        cl = tvh->chanlist_s[scan->channel_num];
        tv_set_freq(tvh, (unsigned long)(((float)cl.freq/1000)*16));
        mp_msg(MSGT_TV, MSGL_INFO, "Trying: %s (%.2f). \n",cl.name,1e-3*cl.freq);
    }
}

/* ================== DEMUX_TV ===================== */
/*
  Return value:
    0 = EOF(?) or no stream
    1 = successfully read a packet
*/
/* fill demux->video and demux->audio */

static int demux_tv_fill_buffer(demuxer_t *demux, demux_stream_t *ds)
{
    tvi_handle_t *tvh=(tvi_handle_t*)(demux->priv);
    demux_packet_t* dp;
    unsigned int len=0;

    /* ================== ADD AUDIO PACKET =================== */

    if (ds==demux->audio && tvh->tv_param->noaudio == 0 && 
        tvh->functions->control(tvh->priv, 
                                TVI_CONTROL_IS_AUDIO, 0) == TVI_CONTROL_TRUE)
        {
        len = tvh->functions->get_audio_framesize(tvh->priv);

        dp=new_demux_packet(len);
        dp->flags|=1; /* Keyframe */
        dp->pts=tvh->functions->grab_audio_frame(tvh->priv, dp->buffer,len);
        ds_add_packet(demux->audio,dp);
        }

    /* ================== ADD VIDEO PACKET =================== */

    if (ds==demux->video && tvh->functions->control(tvh->priv, 
                            TVI_CONTROL_IS_VIDEO, 0) == TVI_CONTROL_TRUE)
        {
		len = tvh->functions->get_video_framesize(tvh->priv);
       	dp=new_demux_packet(len);
		dp->flags|=1; /* Keyframe */
  		dp->pts=tvh->functions->grab_video_frame(tvh->priv, dp->buffer, len);
   		ds_add_packet(demux->video,dp);
	 }

    if (tvh->tv_param->scan) tv_scan(tvh);
    return 1;
}

static int norm_from_string(tvi_handle_t *tvh, char* norm)
{
#ifdef HAVE_TV_V4L2
    if (strcmp(tvh->tv_param->driver, "v4l2") != 0) {
#endif
    if (!strcasecmp(norm, "pal"))
	return TV_NORM_PAL;
    else if (!strcasecmp(norm, "ntsc"))
	return TV_NORM_NTSC;
    else if (!strcasecmp(norm, "secam"))
	return TV_NORM_SECAM;
    else if (!strcasecmp(norm, "palnc"))
	return TV_NORM_PALNC;
    else if (!strcasecmp(norm, "palm"))
	return TV_NORM_PALM;
    else if (!strcasecmp(norm, "paln"))
	return TV_NORM_PALN;
    else if (!strcasecmp(norm, "ntscjp"))
	return TV_NORM_NTSCJP;
    else {
	mp_msg(MSGT_TV, MSGL_WARN, MSGTR_TV_BogusNormParameter, norm, "PAL");
	return TV_NORM_PAL;
    }
#ifdef HAVE_TV_V4L2
    } else {
	tvi_functions_t *funcs = tvh->functions;
	char str[8];
	strncpy(str, norm, sizeof(str)-1);
	str[sizeof(str)-1] = '\0';
        if (funcs->control(tvh->priv, TVI_CONTROL_SPC_GET_NORMID, str) != TVI_CONTROL_TRUE)
        {
	    mp_msg(MSGT_TV, MSGL_WARN, MSGTR_TV_BogusNormParameter, norm,"default");
	    return 0;
        }
	return *(int *)str;
    }
#endif
}

static void parse_channels(tvi_handle_t *tvh)
{
    char** channels = tvh->tv_param->channels;

    mp_msg(MSGT_TV, MSGL_INFO, MSGTR_TV_ChannelNamesDetected);
    tv_channel_list = malloc(sizeof(tv_channels_t));
    tv_channel_list->index=1;
    tv_channel_list->next=NULL;
    tv_channel_list->prev=NULL;
    tv_channel_current = tv_channel_list;

    while (*channels) {
        char* tmp = *(channels++);
        char* sep = strchr(tmp,'-');
        int i;
        struct CHANLIST cl;

        if (!sep) continue; // Wrong syntax, but mplayer should not crash

        av_strlcpy(tv_channel_current->name, sep + 1,
                        sizeof(tv_channel_current->name));
        sep[0] = '\0';
        strncpy(tv_channel_current->number, tmp, 5);
        tv_channel_current->number[4]='\0';

        while ((sep=strchr(tv_channel_current->name, '_')))
            sep[0] = ' ';

        // if channel number is a number and larger than 1000 threat it as frequency
        // tmp still contain pointer to null-terminated string with channel number here
        if (atoi(tmp)>1000){ 
            tv_channel_current->freq=atoi(tmp);
        }else{
            tv_channel_current->freq = 0;
            for (i = 0; i < chanlists[tvh->chanlist].count; i++) {
                cl = tvh->chanlist_s[i];
                if (!strcasecmp(cl.name, tv_channel_current->number)) {
                    tv_channel_current->freq=cl.freq;
                    break;
                }
            }
        }
        if (tv_channel_current->freq == 0)
            mp_msg(MSGT_TV, MSGL_ERR, MSGTR_TV_NoFreqForChannel,
                            tv_channel_current->number, tv_channel_current->name);
        else {
          sep = strchr(tv_channel_current->name, '-');
          if ( !sep ) sep = strchr(tv_channel_current->name, '+');

          if ( sep ) {
            i = atoi (sep+1);
            if ( sep[0] == '+' ) tv_channel_current->freq += i * 100;
            if ( sep[0] == '-' ) tv_channel_current->freq -= i * 100;
            sep[0] = '\0';
          }
        }

        /*mp_msg(MSGT_TV, MSGL_INFO, "-- Detected channel %s - %s (%5.3f)\n",
                        tv_channel_current->number, tv_channel_current->name,
                        (float)tv_channel_current->freq/1000);*/

        tv_channel_current->next = malloc(sizeof(tv_channels_t));
        tv_channel_current->next->index = tv_channel_current->index + 1;
        tv_channel_current->next->prev = tv_channel_current;
        tv_channel_current->next->next = NULL;
        tv_channel_current = tv_channel_current->next;
    }
    if (tv_channel_current->prev)
        tv_channel_current->prev->next = NULL;
    free(tv_channel_current);
}
static int open_tv(tvi_handle_t *tvh)
{
    int i;
    tvi_functions_t *funcs = tvh->functions;
    int tv_fmt_list[] = {
      IMGFMT_YV12,
      IMGFMT_I420,
      IMGFMT_UYVY,
      IMGFMT_YUY2,
      IMGFMT_RGB32,
      IMGFMT_RGB24,
      IMGFMT_RGB16,
      IMGFMT_RGB15
    };

    if (funcs->control(tvh->priv, TVI_CONTROL_IS_VIDEO, 0) != TVI_CONTROL_TRUE)
    {
	mp_msg(MSGT_TV, MSGL_ERR, MSGTR_TV_NoVideoInputPresent);
	return 0;
    }

    if (tvh->tv_param->outfmt == -1)
      for (i = 0; i < sizeof (tv_fmt_list) / sizeof (*tv_fmt_list); i++)
        {
          tvh->tv_param->outfmt = tv_fmt_list[i];
          if (funcs->control (tvh->priv, TVI_CONTROL_VID_SET_FORMAT,
                              &tvh->tv_param->outfmt) == TVI_CONTROL_TRUE)
            break;
        }
    else
    {
    switch(tvh->tv_param->outfmt)
    {
	case IMGFMT_YV12:
	case IMGFMT_I420:
	case IMGFMT_UYVY:
	case IMGFMT_YUY2:
	case IMGFMT_RGB32:
	case IMGFMT_RGB24:
	case IMGFMT_BGR32:
	case IMGFMT_BGR24:
	case IMGFMT_BGR16:
	case IMGFMT_BGR15: