cx88-blackbird.c

V4l driver for DVB HD

	/* assign bitrates */
	if( params->vi_bitrate.mode )
	{
		/* bitrate is set, let's figure out the cbr/vbr mess */
		if( params->vi_bitrate.max < params->vi_bitrate.target )
		{
			if( params->vi_bitrate.mode == V4L2_BITRATE_CBR )
				params->vi_bitrate.max = params->vi_bitrate.target;
			else
				params->vi_bitrate.target = params->vi_bitrate.max;
		}
	}
	else
	{
		if( params->st_bitrate.max < params->st_bitrate.target )
		{
			if( params->st_bitrate.mode == V4L2_BITRATE_VBR )
				params->st_bitrate.target = params->st_bitrate.max;
			else
				params->st_bitrate.max = params->st_bitrate.target;
		}
		/* calculate vi_bitrate = st_bitrate - au_bitrate */
		params->vi_bitrate.max = params->st_bitrate.max - params->au_bitrate.max;
		params->vi_bitrate.target = params->st_bitrate.target - params->au_bitrate.target;
	}
	blackbird_api_cmd(dev, BLACKBIRD_API_SET_VIDEO_BITRATE, 4, 0,
				mpeg_video_bitrates[params->vi_bitrate.mode],
				params->vi_bitrate.target * 1000, /* kbps -> bps */
				params->vi_bitrate.max * 1000 / BLACKBIRD_PEAK_RATE_DIVISOR, /* peak/400 */
				BLACKBIRD_MUX_RATE_DEFAULT /*, 0x70*/); /* encoding buffer, ckennedy */

	/* TODO: implement the stream ID stuff:
		ts_pid_pmt, ts_pid_audio, ts_pid_video, ts_pid_pcr,
		ps_size, au_pesid, vi_pesid
	*/
}
#define CHECK_PARAM( name ) ( dev->params.name != params->name )
#define IF_PARAM( name ) if( CHECK_PARAM( name ) )
#define UPDATE_PARAM( name ) dev->params.name = params->name
void blackbird_set_params(struct cx8802_dev *dev, struct v4l2_mpeg_compression *params)
{
	u32 au_params;

	/* assign stream type */
	if( params->st_type >= ARRAY_SIZE(mpeg_stream_types) )
		params->st_type = V4L2_MPEG_PS_2;
	if( params->st_type == V4L2_MPEG_SS_1 )
		params->vi_type = V4L2_MPEG_VI_1;
	else
		params->vi_type = V4L2_MPEG_VI_2;
	if( CHECK_PARAM( st_type ) || CHECK_PARAM( vi_type ) )
	{
		UPDATE_PARAM( st_type );
		UPDATE_PARAM( vi_type );
		blackbird_api_cmd(dev, BLACKBIRD_API_SET_STREAM_TYPE, 1, 0, mpeg_stream_types[params->st_type]);
	}

	/* assign framerate */
	if( params->vi_frame_rate <= 25 )
		params->vi_frame_rate = 25;
	else
		params->vi_frame_rate = 30;
	IF_PARAM( vi_frame_rate )
	{
		UPDATE_PARAM( vi_frame_rate );
		if( params->vi_frame_rate == 25 )
			blackbird_api_cmd(dev, BLACKBIRD_API_SET_FRAMERATE, 1, 0, BLACKBIRD_FRAMERATE_PAL_25);
		else
			blackbird_api_cmd(dev, BLACKBIRD_API_SET_FRAMERATE, 1, 0, BLACKBIRD_FRAMERATE_NTSC_30);
	}

	/* assign aspect ratio */
	if( params->vi_aspect_ratio >= ARRAY_SIZE(mpeg_stream_ratios) )
		params->vi_aspect_ratio = V4L2_MPEG_ASPECT_4_3;
	IF_PARAM( vi_aspect_ratio )
	{
		UPDATE_PARAM( vi_aspect_ratio );
		blackbird_api_cmd(dev, BLACKBIRD_API_SET_ASPECT_RATIO, 1, 0, mpeg_stream_ratios[params->vi_aspect_ratio]);
	}

	/* assign gop properties */
	if( CHECK_PARAM( vi_frames_per_gop ) || CHECK_PARAM( vi_bframes_count ) )
	{
		UPDATE_PARAM( vi_frames_per_gop );
		UPDATE_PARAM( vi_bframes_count );
		blackbird_api_cmd(dev, BLACKBIRD_API_SET_GOP_STRUCTURE, 2, 0, params->vi_frames_per_gop, params->vi_bframes_count+1);
	}

	/* assign gop closure */
	IF_PARAM( closed_gops )
	{
		UPDATE_PARAM( closed_gops );
		blackbird_api_cmd(dev, BLACKBIRD_API_SET_GOP_CLOSURE, 1, 0, params->closed_gops);
	}

	/* assign 3 2 pulldown */
	IF_PARAM( pulldown )
	{
		UPDATE_PARAM( pulldown );
		blackbird_api_cmd(dev, BLACKBIRD_API_SET_3_2_PULLDOWN, 1, 0, params->pulldown);
	}

	/* make sure the params are within bounds */
	if( params->st_bitrate.mode >= ARRAY_SIZE(mpeg_video_bitrates) )
		params->vi_bitrate.mode = V4L2_BITRATE_NONE;
	if( params->vi_bitrate.mode >= ARRAY_SIZE(mpeg_video_bitrates) )
		params->vi_bitrate.mode = V4L2_BITRATE_NONE;
	if( params->au_bitrate.mode >= ARRAY_SIZE(mpeg_video_bitrates) )
		params->au_bitrate.mode = V4L2_BITRATE_NONE;

	/* assign audio properties */
	/* note: it's not necessary to set the samplerate, the mpeg encoder seems to autodetect/adjust */
	au_params = BLACKBIRD_AUDIO_BITS_STEREO |
			/* BLACKBIRD_AUDIO_BITS_BOUND_4 | */
	BLACKBIRD_AUDIO_BITS_EMPHASIS_NONE |
		BLACKBIRD_AUDIO_BITS_CRC_OFF |
		BLACKBIRD_AUDIO_BITS_COPYRIGHT_OFF |
		BLACKBIRD_AUDIO_BITS_COPY |
		0;
	if( params->au_sample_rate < 32000 )
	{
		params->au_sample_rate = 32000;
		au_params |= BLACKBIRD_AUDIO_BITS_32000HZ;
	}
	else if( params->au_sample_rate < 44100 )
	{
		params->au_sample_rate = 44100;
		au_params |= BLACKBIRD_AUDIO_BITS_44100HZ;
	}
	else
	{
		params->au_sample_rate = 48000;
		au_params |= BLACKBIRD_AUDIO_BITS_48000HZ;
	}
	if( params->au_type == V4L2_MPEG_AU_2_I )
	{
		au_params |= BLACKBIRD_AUDIO_BITS_LAYER_1;
	}
	else
	{
		/* TODO: try to handle the other formats more gracefully */
		params->au_type = V4L2_MPEG_AU_2_II;
		au_params |= BLACKBIRD_AUDIO_BITS_LAYER_2;
	}
	if( params->au_bitrate.mode )
	{
		int layer;

		if( params->au_bitrate.mode == V4L2_BITRATE_CBR )
			params->au_bitrate.max = params->vi_bitrate.target;
		else
			params->au_bitrate.target = params->vi_bitrate.max;

		layer = params->au_type;
		if( params->au_bitrate.target == 0 )
		{
			/* TODO: use the minimum possible bitrate instead of 0 ? */
			au_params |= 0;
		}
		else if( params->au_bitrate.target >=
			 mpeg_audio_bitrates[BITRATES_SIZE-1].layer[layer].rate )
		{
			/* clamp the bitrate to the max supported by the standard */
			params->au_bitrate.target = mpeg_audio_bitrates[BITRATES_SIZE-1].layer[layer].rate;
			params->au_bitrate.max = params->au_bitrate.target;
			au_params |= mpeg_audio_bitrates[BITRATES_SIZE-1].layer[layer].bits;
		}
		else
		{
			/* round up to the nearest supported bitrate */
			int i;
			for(i = 1; i < BITRATES_SIZE; i++)
			{
				if( params->au_bitrate.target > mpeg_audio_bitrates[i-1].layer[layer].rate &&
				    params->au_bitrate.target <= mpeg_audio_bitrates[i].layer[layer].rate )
				{
					params->au_bitrate.target = mpeg_audio_bitrates[i].layer[layer].rate;
					params->au_bitrate.max = params->au_bitrate.target;
					au_params |= mpeg_audio_bitrates[i].layer[layer].bits;
					break;
				}
			}
		}
	}
	else
	{
		/* TODO: ??? */
		params->au_bitrate.target = params->au_bitrate.max = 0;
		au_params |= 0;
	}
	if( CHECK_PARAM( au_type ) || CHECK_PARAM( au_sample_rate )
		|| CHECK_PARAM( au_bitrate.mode ) || CHECK_PARAM( au_bitrate.max )
		|| CHECK_PARAM( au_bitrate.target )
	)
	{
		UPDATE_PARAM( au_type );
		UPDATE_PARAM( au_sample_rate );
		UPDATE_PARAM( au_bitrate );
		blackbird_api_cmd(dev, BLACKBIRD_API_SET_AUDIO_PARAMS, 1, 0, au_params );
	}

	/* assign bitrates */
	if( params->vi_bitrate.mode )
	{
		/* bitrate is set, let's figure out the cbr/vbr mess */
		if( params->vi_bitrate.max < params->vi_bitrate.target )
		{
			if( params->vi_bitrate.mode == V4L2_BITRATE_CBR )
				params->vi_bitrate.max = params->vi_bitrate.target;
			else
				params->vi_bitrate.target = params->vi_bitrate.max;
		}
	}
	else
	{
		if( params->st_bitrate.max < params->st_bitrate.target )
		{
			if( params->st_bitrate.mode == V4L2_BITRATE_VBR )
				params->st_bitrate.target = params->st_bitrate.max;
			else
				params->st_bitrate.max = params->st_bitrate.target;
		}
		/* calculate vi_bitrate = st_bitrate - au_bitrate */
		params->vi_bitrate.max = params->st_bitrate.max - params->au_bitrate.max;
		params->vi_bitrate.target = params->st_bitrate.target - params->au_bitrate.target;
	}
	UPDATE_PARAM( st_bitrate );
	if( CHECK_PARAM( vi_bitrate.mode ) || CHECK_PARAM( vi_bitrate.max )
		|| CHECK_PARAM( vi_bitrate.target )
	)
	{
		UPDATE_PARAM( vi_bitrate );
		blackbird_api_cmd(dev, BLACKBIRD_API_SET_VIDEO_BITRATE, 4, 0,
				mpeg_video_bitrates[params->vi_bitrate.mode],
				params->vi_bitrate.target * 1000, /* kbps -> bps */
				params->vi_bitrate.max * 1000 / BLACKBIRD_PEAK_RATE_DIVISOR, /* peak/400 */
				BLACKBIRD_MUX_RATE_DEFAULT /*, 0x70*/); /* encoding buffer, ckennedy */
	}

	/* TODO: implement the stream ID stuff:
		ts_pid_pmt, ts_pid_audio, ts_pid_video, ts_pid_pcr,
		ps_size, au_pesid, vi_pesid
	*/
	UPDATE_PARAM( ts_pid_pmt );
	UPDATE_PARAM( ts_pid_audio );
	UPDATE_PARAM( ts_pid_video );
	UPDATE_PARAM( ts_pid_pcr );
	UPDATE_PARAM( ps_size );
	UPDATE_PARAM( au_pesid );
	UPDATE_PARAM( vi_pesid );
}

static void blackbird_set_default_dnr_params(struct cx8802_dev *dev)
{
	/* assign dnr filter mode */
	if( dev->dnr_params.mode > BLACKBIRD_DNR_BITS_AUTO )
		dev->dnr_params.mode = BLACKBIRD_DNR_BITS_MANUAL;
	if( dev->dnr_params.type > BLACKBIRD_MEDIAN_FILTER_DIAGONAL )
		dev->dnr_params.type = BLACKBIRD_MEDIAN_FILTER_DISABLED;
	blackbird_api_cmd(dev, BLACKBIRD_API_SET_DNR_MODE, 2, 0,
				dev->dnr_params.mode,
				dev->dnr_params.type
			);

	/* assign dnr filter props*/
	if( dev->dnr_params.spatial > 15 )
		dev->dnr_params.spatial = 15;
	if( dev->dnr_params.temporal > 31 )
		dev->dnr_params.temporal = 31;
	blackbird_api_cmd(dev, BLACKBIRD_API_SET_MANUAL_DNR, 2, 0,
				dev->dnr_params.spatial,
				dev->dnr_params.temporal
			);
}
#define CHECK_DNR_PARAM( name ) ( dev->dnr_params.name != dnr_params->name )
#define UPDATE_DNR_PARAM( name ) dev->dnr_params.name = dnr_params->name
void blackbird_set_dnr_params(struct cx8802_dev *dev, struct blackbird_dnr* dnr_params)
{
	/* assign dnr filter mode */
	/* clamp values */
	if( dnr_params->mode > BLACKBIRD_DNR_BITS_AUTO )
		dnr_params->mode = BLACKBIRD_DNR_BITS_MANUAL;
	if( dnr_params->type > BLACKBIRD_MEDIAN_FILTER_DIAGONAL )
		dnr_params->type = BLACKBIRD_MEDIAN_FILTER_DISABLED;
	/* check if the params actually changed */
	if( CHECK_DNR_PARAM( mode ) || CHECK_DNR_PARAM( type ) )
	{
		UPDATE_DNR_PARAM( mode );
		UPDATE_DNR_PARAM( type );
		blackbird_api_cmd(dev, BLACKBIRD_API_SET_DNR_MODE, 2, 0, dnr_params->mode, dnr_params->type);
	}

	/* assign dnr filter props*/
	if( dnr_params->spatial > 15 )
		dnr_params->spatial = 15;
	if( dnr_params->temporal > 31 )
		dnr_params->temporal = 31;
	if( CHECK_DNR_PARAM( spatial ) || CHECK_DNR_PARAM( temporal ) )
	{
		UPDATE_DNR_PARAM( spatial );
		UPDATE_DNR_PARAM( temporal );
		blackbird_api_cmd(dev, BLACKBIRD_API_SET_MANUAL_DNR, 2, 0, dnr_params->spatial, dnr_params->temporal);
	}
}

static void blackbird_codec_settings(struct cx8802_dev *dev)
{

	/* assign output port */
	blackbird_api_cmd(dev, BLACKBIRD_API_SET_OUTPUT_PORT, 1, 0, BLACKBIRD_OUTPUT_PORT_STREAMING); /* Host */

	/* assign frame size */
	blackbird_api_cmd(dev, BLACKBIRD_API_SET_RESOLUTION, 2, 0,
				dev->height, dev->width);

	/* assign coring levels (luma_h, luma_l, chroma_h, chroma_l) */
	blackbird_api_cmd(dev, BLACKBIRD_API_SET_DNR_MEDIAN, 4, 0, 0, 255, 0, 255);

	/* assign spatial filter type: luma_t: horiz_only, chroma_t: horiz_only */
	blackbird_api_cmd(dev, BLACKBIRD_API_SET_SPATIAL_FILTER, 2, 0,
				BLACKBIRD_SPATIAL_FILTER_LUMA_1D_HORIZ,
				BLACKBIRD_SPATIAL_FILTER_CHROMA_1D_HORIZ
			);

	/* assign frame drop rate */
	/* blackbird_api_cmd(dev, IVTV_API_ASSIGN_FRAME_DROP_RATE, 1, 0, 0); */

	blackbird_set_default_params(dev);
	blackbird_set_default_dnr_params(dev);
}

static int blackbird_initialize_codec(struct cx8802_dev *dev)
{
	struct cx88_core *core = dev->core;
	int version;
	int retval;

	dprintk(1,"Initialize codec\n");
	retval = blackbird_api_cmd(dev, BLACKBIRD_API_PING, 0, 0); /* ping */
	if (retval < 0) {
		/* ping was not successful, reset and upload firmware */
		cx_write(MO_SRST_IO, 0); /* SYS_RSTO=0 */
		msleep(1);
		cx_write(MO_SRST_IO, 1); /* SYS_RSTO=1 */
		msleep(1);
		retval = blackbird_load_firmware(dev);
		if (retval < 0)
			return retval;

		dev->mailbox = blackbird_find_mailbox(dev);
		if (dev->mailbox < 0)
			return -1;

		retval = blackbird_api_cmd(dev, BLACKBIRD_API_PING, 0, 0); /* ping */
		if (retval < 0) {
			dprintk(0, "ERROR: Firmware ping failed!\n");
			return -1;
		}

		retval = blackbird_api_cmd(dev, BLACKBIRD_API_GET_VERSION, 0, 1, &version);
		if (retval < 0) {
			dprintk(0, "ERROR: Firmware get encoder version failed!\n");
			return -1;
		}
		dprintk(0, "Firmware version is 0x%08x\n", version);
	}
	msleep(1);

	cx_write(MO_PINMUX_IO, 0x88); /* 656-8bit IO and enable MPEG parallel IO */
	cx_clear(MO_INPUT_FORMAT, 0x100); /* chroma subcarrier lock to normal? */
	cx_write(MO_VBOS_CONTROL, 0x84A00); /* no 656 mode, 8-bit pixels, disable VBI */
	cx_clear(MO_OUTPUT_FORMAT, 0x0008); /* Normal Y-limits to let the mpeg encoder sync */

	blackbird_codec_settings(dev);
	msleep(1);

	/* blackbird_api_cmd(dev, IVTV_API_ASSIGN_NUM_VSYNC_LINES, 4, 0, 0xef, 0xef);
	   blackbird_api_cmd(dev, IVTV_API_ASSIGN_NUM_VSYNC_LINES, 4, 0, 0xf0, 0xf0);
	   blackbird_api_cmd(dev, IVTV_API_ASSIGN_NUM_VSYNC_LINES, 4, 0, 0x180, 0x180); */
	blackbird_api_cmd(dev, BLACKBIRD_API_SET_CAPTURE_LINES, 2, 0,
			BLACKBIRD_FIELD1_SAA7115,
			BLACKBIRD_FIELD2_SAA7115
		);

	/* blackbird_api_cmd(dev, IVTV_API_ASSIGN_PLACEHOLDER, 12, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0); */
	blackbird_api_cmd(dev, BLACKBIRD_API_SET_CUSTOM_DATA, 12, 0,
			BLACKBIRD_CUSTOM_EXTENSION_USR_DATA,
			0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);

	/* initialize the video input */
	blackbird_api_cmd(dev, BLACKBIRD_API_INIT_VIDEO_INPUT, 0, 0);

	msleep(1);

	blackbird_api_cmd(dev, BLACKBIRD_API_MUTE_VIDEO, 1, 0, BLACKBIRD_UNMUTE);
	msleep(1);
	blackbird_api_cmd(dev, BLACKBIRD_API_MUTE_AUDIO, 1, 0, BLACKBIRD_UNMUTE);
	msleep(1);

	/* start capturing to the host interface */
	/* blackbird_api_cmd(dev, BLACKBIRD_API_BEGIN_CAPTURE, 2, 0, 0, 0x13); */
	blackbird_api_cmd(dev, BLACKBIRD_API_BEGIN_CAPTURE, 2, 0,
			BLACKBIRD_MPEG_CAPTURE,
			BLACKBIRD_RAW_BITS_NONE
		);
	msleep(10);

	blackbird_api_cmd(dev, BLACKBIRD_API_REFRESH_INPUT, 0,0);
	return 0;
}

/* ------------------------------------------------------------------ */

static int bb_buf_setup(struct videobuf_queue *q,
			unsigned int *count, unsigned int *size)
{
	struct cx8802_fh *fh = q->priv_data;

	fh->dev->ts_packet_size  = 188 * 4; /* was: 512 */
	fh->dev->ts_packet_count = mpegbufs; /* was: 100 */

	*size = fh->dev->ts_packet_size * fh->dev->ts_packet_count;
	*count = fh->dev->ts_packet_count;
#if 0
	if (0 == *count)
		*count = mpegbufs;
	if (*count < 2)
		*count = 2;
	if (*count > 32)
		*count = 32;
#endif
	return 0;
}

static int
bb_buf_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,
	       enum v4l2_field field)
{
	struct cx8802_fh *fh = q->priv_data;
	return cx8802_buf_prepare(q, fh->dev, (struct cx88_buffer*)vb, field);
}

static void
bb_buf_queue(struct videobuf_queue *q, struct videobuf_buffer *vb)
{
	struct cx8802_fh *fh = q->priv_data;
	cx8802_buf_queue(fh->dev, (struct cx88_buffer*)vb);
}

static void
bb_buf_release(struct videobuf_queue *q, struct videobuf_buffer *vb)
{
	cx88_free_buffer(q, (struct cx88_buffer*)vb);
}

static struct videobuf_queue_ops blackbird_qops = {
	.buf_setup    = bb_buf_setup,
	.buf_prepare  = bb_buf_prepare,
	.buf_queue    = bb_buf_queue,
	.buf_release  = bb_buf_release,