ivtv-ioctl.c

linux内核源码

				"Stereo",
				"Left",
				"Right",
				"Mono",
				"Swapped"
			};
			static const char * const alpha_mode[4] = {
				"None",
				"Global",
				"Local",
				"Global and Local"
			};
			static const char * const pixel_format[16] = {
				"ARGB Indexed",
				"RGB 5:6:5",
				"ARGB 1:5:5:5",
				"ARGB 1:4:4:4",
				"ARGB 8:8:8:8",
				"5",
				"6",
				"7",
				"AYUV Indexed",
				"YUV 5:6:5",
				"AYUV 1:5:5:5",
				"AYUV 1:4:4:4",
				"AYUV 8:8:8:8",
				"13",
				"14",
				"15",
			};

			ivtv_get_output(itv, itv->active_output, &vidout);
			ivtv_get_audio_output(itv, 0, &audout);
			IVTV_INFO("Video Output: %s\n", vidout.name);
			IVTV_INFO("Audio Output: %s (Stereo/Bilingual: %s/%s)\n", audout.name,
				audio_modes[itv->audio_stereo_mode],
				audio_modes[itv->audio_bilingual_mode]);
			if (mode < 0 || mode > OUT_PASSTHROUGH)
				mode = OUT_NONE;
			IVTV_INFO("Output Mode:  %s\n", output_modes[mode]);
			ivtv_vapi_result(itv, data, CX2341X_OSD_GET_STATE, 0);
			data[0] |= (read_reg(0x2a00) >> 7) & 0x40;
			IVTV_INFO("Overlay:      %s, Alpha: %s, Pixel Format: %s\n",
				data[0] & 1 ? "On" : "Off",
				alpha_mode[(data[0] >> 1) & 0x3],
				pixel_format[(data[0] >> 3) & 0xf]);
		}
		IVTV_INFO("Tuner:  %s\n",
			test_bit(IVTV_F_I_RADIO_USER, &itv->i_flags) ? "Radio" : "TV");
		cx2341x_log_status(&itv->params, itv->name);
		IVTV_INFO("Status flags:    0x%08lx\n", itv->i_flags);
		for (i = 0; i < IVTV_MAX_STREAMS; i++) {
			struct ivtv_stream *s = &itv->streams[i];

			if (s->v4l2dev == NULL || s->buffers == 0)
				continue;
			IVTV_INFO("Stream %s: status 0x%04lx, %d%% of %d KiB (%d buffers) in use\n", s->name, s->s_flags,
					(s->buffers - s->q_free.buffers) * 100 / s->buffers,
					(s->buffers * s->buf_size) / 1024, s->buffers);
		}
		IVTV_INFO("Read MPG/VBI: %lld/%lld bytes\n", (long long)itv->mpg_data_received, (long long)itv->vbi_data_inserted);
		IVTV_INFO("==================  END STATUS CARD #%d  ==================\n", itv->num);
		break;
	}

	default:
		return -EINVAL;
	}
	return 0;
}

static int ivtv_decoder_ioctls(struct file *filp, unsigned int cmd, void *arg)
{
	struct ivtv_open_id *id = (struct ivtv_open_id *)filp->private_data;
	struct ivtv *itv = id->itv;
	int nonblocking = filp->f_flags & O_NONBLOCK;
	struct ivtv_stream *s = &itv->streams[id->type];

	switch (cmd) {
	case IVTV_IOC_DMA_FRAME: {
		struct ivtv_dma_frame *args = arg;

		IVTV_DEBUG_IOCTL("IVTV_IOC_DMA_FRAME\n");
		if (!(itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT))
			return -EINVAL;
		if (args->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
			return -EINVAL;
		if (itv->output_mode == OUT_UDMA_YUV && args->y_source == NULL)
			return 0;
		if (ivtv_claim_stream(id, id->type)) {
			return -EBUSY;
		}
		if (ivtv_set_output_mode(itv, OUT_UDMA_YUV) != OUT_UDMA_YUV) {
			ivtv_release_stream(s);
			return -EBUSY;
		}
		/* Mark that this file handle started the UDMA_YUV mode */
		id->yuv_frames = 1;
		if (args->y_source == NULL)
			return 0;
		return ivtv_yuv_prep_frame(itv, args);
	}

	case VIDEO_GET_PTS: {
		u32 data[CX2341X_MBOX_MAX_DATA];
		u64 *pts = arg;

		IVTV_DEBUG_IOCTL("VIDEO_GET_PTS\n");
		if (s->type < IVTV_DEC_STREAM_TYPE_MPG) {
			*pts = s->dma_pts;
			break;
		}
		if (!(itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT))
			return -EINVAL;

		if (test_bit(IVTV_F_I_VALID_DEC_TIMINGS, &itv->i_flags)) {
			*pts = (u64) ((u64)itv->last_dec_timing[2] << 32) |
					(u64)itv->last_dec_timing[1];
			break;
		}
		*pts = 0;
		if (atomic_read(&itv->decoding)) {
			if (ivtv_api(itv, CX2341X_DEC_GET_TIMING_INFO, 5, data)) {
				IVTV_DEBUG_WARN("GET_TIMING: couldn't read clock\n");
				return -EIO;
			}
			memcpy(itv->last_dec_timing, data, sizeof(itv->last_dec_timing));
			set_bit(IVTV_F_I_VALID_DEC_TIMINGS, &itv->i_flags);
			*pts = (u64) ((u64) data[2] << 32) | (u64) data[1];
			/*timing->scr = (u64) (((u64) data[4] << 32) | (u64) (data[3]));*/
		}
		break;
	}

	case VIDEO_GET_FRAME_COUNT: {
		u32 data[CX2341X_MBOX_MAX_DATA];
		u64 *frame = arg;

		IVTV_DEBUG_IOCTL("VIDEO_GET_FRAME_COUNT\n");
		if (s->type < IVTV_DEC_STREAM_TYPE_MPG) {
			*frame = 0;
			break;
		}
		if (!(itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT))
			return -EINVAL;

		if (test_bit(IVTV_F_I_VALID_DEC_TIMINGS, &itv->i_flags)) {
			*frame = itv->last_dec_timing[0];
			break;
		}
		*frame = 0;
		if (atomic_read(&itv->decoding)) {
			if (ivtv_api(itv, CX2341X_DEC_GET_TIMING_INFO, 5, data)) {
				IVTV_DEBUG_WARN("GET_TIMING: couldn't read clock\n");
				return -EIO;
			}
			memcpy(itv->last_dec_timing, data, sizeof(itv->last_dec_timing));
			set_bit(IVTV_F_I_VALID_DEC_TIMINGS, &itv->i_flags);
			*frame = data[0];
		}
		break;
	}

	case VIDEO_PLAY: {
		struct video_command vc;

		IVTV_DEBUG_IOCTL("VIDEO_PLAY\n");
		memset(&vc, 0, sizeof(vc));
		vc.cmd = VIDEO_CMD_PLAY;
		return ivtv_video_command(itv, id, &vc, 0);
	}

	case VIDEO_STOP: {
		struct video_command vc;

		IVTV_DEBUG_IOCTL("VIDEO_STOP\n");
		memset(&vc, 0, sizeof(vc));
		vc.cmd = VIDEO_CMD_STOP;
		vc.flags = VIDEO_CMD_STOP_TO_BLACK | VIDEO_CMD_STOP_IMMEDIATELY;
		return ivtv_video_command(itv, id, &vc, 0);
	}

	case VIDEO_FREEZE: {
		struct video_command vc;

		IVTV_DEBUG_IOCTL("VIDEO_FREEZE\n");
		memset(&vc, 0, sizeof(vc));
		vc.cmd = VIDEO_CMD_FREEZE;
		return ivtv_video_command(itv, id, &vc, 0);
	}

	case VIDEO_CONTINUE: {
		struct video_command vc;

		IVTV_DEBUG_IOCTL("VIDEO_CONTINUE\n");
		memset(&vc, 0, sizeof(vc));
		vc.cmd = VIDEO_CMD_CONTINUE;
		return ivtv_video_command(itv, id, &vc, 0);
	}

	case VIDEO_COMMAND:
	case VIDEO_TRY_COMMAND: {
		struct video_command *vc = arg;
		int try = (cmd == VIDEO_TRY_COMMAND);

		if (try)
			IVTV_DEBUG_IOCTL("VIDEO_TRY_COMMAND %d\n", vc->cmd);
		else
			IVTV_DEBUG_IOCTL("VIDEO_COMMAND %d\n", vc->cmd);
		return ivtv_video_command(itv, id, vc, try);
	}

	case VIDEO_GET_EVENT: {
		struct video_event *ev = arg;
		DEFINE_WAIT(wait);

		IVTV_DEBUG_IOCTL("VIDEO_GET_EVENT\n");
		if (!(itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT))
			return -EINVAL;
		memset(ev, 0, sizeof(*ev));
		set_bit(IVTV_F_I_EV_VSYNC_ENABLED, &itv->i_flags);

		while (1) {
			if (test_and_clear_bit(IVTV_F_I_EV_DEC_STOPPED, &itv->i_flags))
				ev->type = VIDEO_EVENT_DECODER_STOPPED;
			else if (test_and_clear_bit(IVTV_F_I_EV_VSYNC, &itv->i_flags)) {
				ev->type = VIDEO_EVENT_VSYNC;
				ev->u.vsync_field = test_bit(IVTV_F_I_EV_VSYNC_FIELD, &itv->i_flags) ?
					VIDEO_VSYNC_FIELD_ODD : VIDEO_VSYNC_FIELD_EVEN;
				if (itv->output_mode == OUT_UDMA_YUV &&
					(itv->yuv_info.lace_mode & IVTV_YUV_MODE_MASK) ==
								IVTV_YUV_MODE_PROGRESSIVE) {
					ev->u.vsync_field = VIDEO_VSYNC_FIELD_PROGRESSIVE;
				}
			}
			if (ev->type)
				return 0;
			if (nonblocking)
				return -EAGAIN;
			/* Wait for event. Note that serialize_lock is locked,
			   so to allow other processes to access the driver while
			   we are waiting unlock first and later lock again. */
			mutex_unlock(&itv->serialize_lock);
			prepare_to_wait(&itv->event_waitq, &wait, TASK_INTERRUPTIBLE);
			if ((itv->i_flags & (IVTV_F_I_EV_DEC_STOPPED|IVTV_F_I_EV_VSYNC)) == 0)
				schedule();
			finish_wait(&itv->event_waitq, &wait);
			mutex_lock(&itv->serialize_lock);
			if (signal_pending(current)) {
				/* return if a signal was received */
				IVTV_DEBUG_INFO("User stopped wait for event\n");
				return -EINTR;
			}
		}
		break;
	}

	default:
		return -EINVAL;
	}
	return 0;
}

static int ivtv_v4l2_do_ioctl(struct inode *inode, struct file *filp,
			      unsigned int cmd, void *arg)
{
	struct ivtv_open_id *id = (struct ivtv_open_id *)filp->private_data;
	struct ivtv *itv = id->itv;
	int ret;

	/* check priority */
	switch (cmd) {
	case VIDIOC_S_CTRL:
	case VIDIOC_S_STD:
	case VIDIOC_S_INPUT:
	case VIDIOC_S_OUTPUT:
	case VIDIOC_S_TUNER:
	case VIDIOC_S_FREQUENCY:
	case VIDIOC_S_FMT:
	case VIDIOC_S_CROP:
	case VIDIOC_S_AUDIO:
	case VIDIOC_S_AUDOUT:
	case VIDIOC_S_EXT_CTRLS:
	case VIDIOC_S_FBUF:
	case VIDIOC_OVERLAY:
		ret = v4l2_prio_check(&itv->prio, &id->prio);
		if (ret)
			return ret;
	}

	switch (cmd) {
	case VIDIOC_DBG_G_REGISTER:
	case VIDIOC_DBG_S_REGISTER:
	case VIDIOC_G_CHIP_IDENT:
	case VIDIOC_INT_S_AUDIO_ROUTING:
	case VIDIOC_INT_RESET:
		if (ivtv_debug & IVTV_DBGFLG_IOCTL) {
			printk(KERN_INFO "ivtv%d ioctl: ", itv->num);
			v4l_printk_ioctl(cmd);
		}
		return ivtv_debug_ioctls(filp, cmd, arg);

	case VIDIOC_G_PRIORITY:
	case VIDIOC_S_PRIORITY:
	case VIDIOC_QUERYCAP:
	case VIDIOC_ENUMINPUT:
	case VIDIOC_G_INPUT:
	case VIDIOC_S_INPUT:
	case VIDIOC_ENUMOUTPUT:
	case VIDIOC_G_OUTPUT:
	case VIDIOC_S_OUTPUT:
	case VIDIOC_G_FMT:
	case VIDIOC_S_FMT:
	case VIDIOC_TRY_FMT:
	case VIDIOC_ENUM_FMT:
	case VIDIOC_CROPCAP:
	case VIDIOC_G_CROP:
	case VIDIOC_S_CROP:
	case VIDIOC_G_FREQUENCY:
	case VIDIOC_S_FREQUENCY:
	case VIDIOC_ENUMSTD:
	case VIDIOC_G_STD:
	case VIDIOC_S_STD:
	case VIDIOC_S_TUNER:
	case VIDIOC_G_TUNER:
	case VIDIOC_ENUMAUDIO:
	case VIDIOC_S_AUDIO:
	case VIDIOC_G_AUDIO:
	case VIDIOC_ENUMAUDOUT:
	case VIDIOC_S_AUDOUT:
	case VIDIOC_G_AUDOUT:
	case VIDIOC_G_SLICED_VBI_CAP:
	case VIDIOC_LOG_STATUS:
	case VIDIOC_G_ENC_INDEX:
	case VIDIOC_ENCODER_CMD:
	case VIDIOC_TRY_ENCODER_CMD:
	case VIDIOC_G_FBUF:
	case VIDIOC_S_FBUF:
	case VIDIOC_OVERLAY:
		if (ivtv_debug & IVTV_DBGFLG_IOCTL) {
			printk(KERN_INFO "ivtv%d ioctl: ", itv->num);
			v4l_printk_ioctl(cmd);
		}
		return ivtv_v4l2_ioctls(itv, filp, cmd, arg);

	case VIDIOC_QUERYMENU:
	case VIDIOC_QUERYCTRL:
	case VIDIOC_S_CTRL:
	case VIDIOC_G_CTRL:
	case VIDIOC_S_EXT_CTRLS:
	case VIDIOC_G_EXT_CTRLS:
	case VIDIOC_TRY_EXT_CTRLS:
		if (ivtv_debug & IVTV_DBGFLG_IOCTL) {
			printk(KERN_INFO "ivtv%d ioctl: ", itv->num);
			v4l_printk_ioctl(cmd);
		}
		return ivtv_control_ioctls(itv, cmd, arg);

	case IVTV_IOC_DMA_FRAME:
	case VIDEO_GET_PTS:
	case VIDEO_GET_FRAME_COUNT:
	case VIDEO_GET_EVENT:
	case VIDEO_PLAY:
	case VIDEO_STOP:
	case VIDEO_FREEZE:
	case VIDEO_CONTINUE:
	case VIDEO_COMMAND:
	case VIDEO_TRY_COMMAND:
		return ivtv_decoder_ioctls(filp, cmd, arg);

	case 0x00005401:	/* Handle isatty() calls */
		return -EINVAL;
	default:
		return v4l_compat_translate_ioctl(inode, filp, cmd, arg,
						   ivtv_v4l2_do_ioctl);
	}
	return 0;
}

static int ivtv_serialized_ioctl(struct ivtv *itv, struct inode *inode, struct file *filp,
		unsigned int cmd, unsigned long arg)
{
	/* Filter dvb ioctls that cannot be handled by video_usercopy */
	switch (cmd) {
	case VIDEO_SELECT_SOURCE:
		IVTV_DEBUG_IOCTL("VIDEO_SELECT_SOURCE\n");
		if (!(itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT))
			return -EINVAL;
		return ivtv_passthrough_mode(itv, arg == VIDEO_SOURCE_DEMUX);

	case AUDIO_SET_MUTE:
		IVTV_DEBUG_IOCTL("AUDIO_SET_MUTE\n");
		itv->speed_mute_audio = arg;
		return 0;

	case AUDIO_CHANNEL_SELECT:
		IVTV_DEBUG_IOCTL("AUDIO_CHANNEL_SELECT\n");
		if (arg > AUDIO_STEREO_SWAPPED)
			return -EINVAL;
		itv->audio_stereo_mode = arg;
		ivtv_vapi(itv, CX2341X_DEC_SET_AUDIO_MODE, 2, itv->audio_bilingual_mode, itv->audio_stereo_mode);
		return 0;

	case AUDIO_BILINGUAL_CHANNEL_SELECT:
		IVTV_DEBUG_IOCTL("AUDIO_BILINGUAL_CHANNEL_SELECT\n");
		if (arg > AUDIO_STEREO_SWAPPED)
			return -EINVAL;
		itv->audio_bilingual_mode = arg;
		ivtv_vapi(itv, CX2341X_DEC_SET_AUDIO_MODE, 2, itv->audio_bilingual_mode, itv->audio_stereo_mode);
		return 0;

	default:
		break;
	}
	return video_usercopy(inode, filp, cmd, arg, ivtv_v4l2_do_ioctl);
}

int ivtv_v4l2_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
		    unsigned long arg)
{
	struct ivtv_open_id *id = (struct ivtv_open_id *)filp->private_data;
	struct ivtv *itv = id->itv;
	int res;

	mutex_lock(&itv->serialize_lock);
	res = ivtv_serialized_ioctl(itv, inode, filp, cmd, arg);
	mutex_unlock(&itv->serialize_lock);
	return res;
}