tvi_v4l.c

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{
    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 (priv->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 ( priv->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 set 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);
        }
        case TVI_CONTROL_TUN_GET_SIGNAL:
        {
            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);
            }
            *(int*)arg=100*(priv->tuner.signal>>8)/255;
            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)