videodev.c

来自「linux 内核源代码」· C语言 代码 · 共 1,829 行 · 第 1/3 页

				ret=vfd->vidioc_g_fmt_overlay(file, fh, f);
			break;
		case V4L2_BUF_TYPE_VBI_CAPTURE:
			if (vfd->vidioc_g_fmt_vbi)
				ret=vfd->vidioc_g_fmt_vbi(file, fh, f);
			break;
		case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
			if (vfd->vidioc_g_fmt_vbi_output)
				ret=vfd->vidioc_g_fmt_vbi_output(file, fh, f);
			break;
		case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
			if (vfd->vidioc_g_fmt_vbi_capture)
				ret=vfd->vidioc_g_fmt_vbi_capture(file, fh, f);
			break;
		case V4L2_BUF_TYPE_VIDEO_OUTPUT:
			if (vfd->vidioc_g_fmt_video_output)
				ret=vfd->vidioc_g_fmt_video_output(file,
								fh, f);
			break;
		case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
			if (vfd->vidioc_g_fmt_output_overlay)
				ret=vfd->vidioc_g_fmt_output_overlay(file, fh, f);
			break;
		case V4L2_BUF_TYPE_VBI_OUTPUT:
			if (vfd->vidioc_g_fmt_vbi_output)
				ret=vfd->vidioc_g_fmt_vbi_output(file, fh, f);
			break;
		case V4L2_BUF_TYPE_PRIVATE:
			if (vfd->vidioc_g_fmt_type_private)
				ret=vfd->vidioc_g_fmt_type_private(file,
								fh, f);
			break;
		}

		break;
	}
	case VIDIOC_S_FMT:
	{
		struct v4l2_format *f = (struct v4l2_format *)arg;

		/* FIXME: Should be one dump per type */
		dbgarg (cmd, "type=%s\n", prt_names(f->type,
					v4l2_type_names_FIXME));

		switch (f->type) {
		case V4L2_BUF_TYPE_VIDEO_CAPTURE:
			v4l_print_pix_fmt(vfd,&f->fmt.pix);
			if (vfd->vidioc_s_fmt_cap)
				ret=vfd->vidioc_s_fmt_cap(file, fh, f);
			break;
		case V4L2_BUF_TYPE_VIDEO_OVERLAY:
			if (vfd->vidioc_s_fmt_overlay)
				ret=vfd->vidioc_s_fmt_overlay(file, fh, f);
			break;
		case V4L2_BUF_TYPE_VBI_CAPTURE:
			if (vfd->vidioc_s_fmt_vbi)
				ret=vfd->vidioc_s_fmt_vbi(file, fh, f);
			break;
		case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
			if (vfd->vidioc_s_fmt_vbi_output)
				ret=vfd->vidioc_s_fmt_vbi_output(file, fh, f);
			break;
		case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
			if (vfd->vidioc_s_fmt_vbi_capture)
				ret=vfd->vidioc_s_fmt_vbi_capture(file, fh, f);
			break;
		case V4L2_BUF_TYPE_VIDEO_OUTPUT:
			if (vfd->vidioc_s_fmt_video_output)
				ret=vfd->vidioc_s_fmt_video_output(file,
								fh, f);
			break;
		case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
			if (vfd->vidioc_s_fmt_output_overlay)
				ret=vfd->vidioc_s_fmt_output_overlay(file, fh, f);
			break;
		case V4L2_BUF_TYPE_VBI_OUTPUT:
			if (vfd->vidioc_s_fmt_vbi_output)
				ret=vfd->vidioc_s_fmt_vbi_output(file,
								fh, f);
			break;
		case V4L2_BUF_TYPE_PRIVATE:
			if (vfd->vidioc_s_fmt_type_private)
				ret=vfd->vidioc_s_fmt_type_private(file,
								fh, f);
			break;
		}
		break;
	}
	case VIDIOC_TRY_FMT:
	{
		struct v4l2_format *f = (struct v4l2_format *)arg;

		/* FIXME: Should be one dump per type */
		dbgarg (cmd, "type=%s\n", prt_names(f->type,
						v4l2_type_names_FIXME));
		switch (f->type) {
		case V4L2_BUF_TYPE_VIDEO_CAPTURE:
			if (vfd->vidioc_try_fmt_cap)
				ret=vfd->vidioc_try_fmt_cap(file, fh, f);
			if (!ret)
				v4l_print_pix_fmt(vfd,&f->fmt.pix);
			break;
		case V4L2_BUF_TYPE_VIDEO_OVERLAY:
			if (vfd->vidioc_try_fmt_overlay)
				ret=vfd->vidioc_try_fmt_overlay(file, fh, f);
			break;
		case V4L2_BUF_TYPE_VBI_CAPTURE:
			if (vfd->vidioc_try_fmt_vbi)
				ret=vfd->vidioc_try_fmt_vbi(file, fh, f);
			break;
		case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
			if (vfd->vidioc_try_fmt_vbi_output)
				ret=vfd->vidioc_try_fmt_vbi_output(file,
								fh, f);
			break;
		case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
			if (vfd->vidioc_try_fmt_vbi_capture)
				ret=vfd->vidioc_try_fmt_vbi_capture(file,
								fh, f);
			break;
		case V4L2_BUF_TYPE_VIDEO_OUTPUT:
			if (vfd->vidioc_try_fmt_video_output)
				ret=vfd->vidioc_try_fmt_video_output(file,
								fh, f);
			break;
		case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
			if (vfd->vidioc_try_fmt_output_overlay)
				ret=vfd->vidioc_try_fmt_output_overlay(file, fh, f);
			break;
		case V4L2_BUF_TYPE_VBI_OUTPUT:
			if (vfd->vidioc_try_fmt_vbi_output)
				ret=vfd->vidioc_try_fmt_vbi_output(file,
								fh, f);
			break;
		case V4L2_BUF_TYPE_PRIVATE:
			if (vfd->vidioc_try_fmt_type_private)
				ret=vfd->vidioc_try_fmt_type_private(file,
								fh, f);
			break;
		}

		break;
	}
	/* FIXME: Those buf reqs could be handled here,
	   with some changes on videobuf to allow its header to be included at
	   videodev2.h or being merged at videodev2.
	 */
	case VIDIOC_REQBUFS:
	{
		struct v4l2_requestbuffers *p=arg;

		if (!vfd->vidioc_reqbufs)
			break;
		ret = check_fmt (vfd, p->type);
		if (ret)
			break;

		ret=vfd->vidioc_reqbufs(file, fh, p);
		dbgarg (cmd, "count=%d, type=%s, memory=%s\n",
				p->count,
				prt_names(p->type,v4l2_type_names_FIXME),
				prt_names(p->memory,v4l2_memory_names));
		break;
	}
	case VIDIOC_QUERYBUF:
	{
		struct v4l2_buffer *p=arg;

		if (!vfd->vidioc_querybuf)
			break;
		ret = check_fmt (vfd, p->type);
		if (ret)
			break;

		ret=vfd->vidioc_querybuf(file, fh, p);
		if (!ret)
			dbgbuf(cmd,vfd,p);
		break;
	}
	case VIDIOC_QBUF:
	{
		struct v4l2_buffer *p=arg;

		if (!vfd->vidioc_qbuf)
			break;
		ret = check_fmt (vfd, p->type);
		if (ret)
			break;

		ret=vfd->vidioc_qbuf(file, fh, p);
		if (!ret)
			dbgbuf(cmd,vfd,p);
		break;
	}
	case VIDIOC_DQBUF:
	{
		struct v4l2_buffer *p=arg;
		if (!vfd->vidioc_dqbuf)
			break;
		ret = check_fmt (vfd, p->type);
		if (ret)
			break;

		ret=vfd->vidioc_dqbuf(file, fh, p);
		if (!ret)
			dbgbuf(cmd,vfd,p);
		break;
	}
	case VIDIOC_OVERLAY:
	{
		int *i = arg;

		if (!vfd->vidioc_overlay)
			break;
		dbgarg (cmd, "value=%d\n",*i);
		ret=vfd->vidioc_overlay(file, fh, *i);
		break;
	}
	case VIDIOC_G_FBUF:
	{
		struct v4l2_framebuffer *p=arg;
		if (!vfd->vidioc_g_fbuf)
			break;
		ret=vfd->vidioc_g_fbuf(file, fh, arg);
		if (!ret) {
			dbgarg (cmd, "capability=%d, flags=%d, base=0x%08lx\n",
					p->capability,p->flags,
					(unsigned long)p->base);
			v4l_print_pix_fmt (vfd, &p->fmt);
		}
		break;
	}
	case VIDIOC_S_FBUF:
	{
		struct v4l2_framebuffer *p=arg;
		if (!vfd->vidioc_s_fbuf)
			break;

		dbgarg (cmd, "capability=%d, flags=%d, base=0x%08lx\n",
				p->capability,p->flags,(unsigned long)p->base);
		v4l_print_pix_fmt (vfd, &p->fmt);
		ret=vfd->vidioc_s_fbuf(file, fh, arg);

		break;
	}
	case VIDIOC_STREAMON:
	{
		enum v4l2_buf_type i = *(int *)arg;
		if (!vfd->vidioc_streamon)
			break;
		dbgarg (cmd, "type=%s\n", prt_names(i,v4l2_type_names_FIXME));
		ret=vfd->vidioc_streamon(file, fh,i);
		break;
	}
	case VIDIOC_STREAMOFF:
	{
		enum v4l2_buf_type i = *(int *)arg;

		if (!vfd->vidioc_streamoff)
			break;
		dbgarg (cmd, "type=%s\n", prt_names(i,v4l2_type_names_FIXME));
		ret=vfd->vidioc_streamoff(file, fh, i);
		break;
	}
	/* ---------- tv norms ---------- */
	case VIDIOC_ENUMSTD:
	{
		struct v4l2_standard *p = arg;
		v4l2_std_id id = vfd->tvnorms,curr_id=0;
		unsigned int index = p->index,i;

		if (index<0) {
			ret=-EINVAL;
			break;
		}

		/* Return norm array on a canonical way */
		for (i=0;i<= index && id; i++) {
			if ( (id & V4L2_STD_PAL) == V4L2_STD_PAL) {
				curr_id = V4L2_STD_PAL;
			} else if ( (id & V4L2_STD_PAL_BG) == V4L2_STD_PAL_BG) {
				curr_id = V4L2_STD_PAL_BG;
			} else if ( (id & V4L2_STD_PAL_DK) == V4L2_STD_PAL_DK) {
				curr_id = V4L2_STD_PAL_DK;
			} else if ( (id & V4L2_STD_PAL_B) == V4L2_STD_PAL_B) {
				curr_id = V4L2_STD_PAL_B;
			} else if ( (id & V4L2_STD_PAL_B1) == V4L2_STD_PAL_B1) {
				curr_id = V4L2_STD_PAL_B1;
			} else if ( (id & V4L2_STD_PAL_G) == V4L2_STD_PAL_G) {
				curr_id = V4L2_STD_PAL_G;
			} else if ( (id & V4L2_STD_PAL_H) == V4L2_STD_PAL_H) {
				curr_id = V4L2_STD_PAL_H;
			} else if ( (id & V4L2_STD_PAL_I) == V4L2_STD_PAL_I) {
				curr_id = V4L2_STD_PAL_I;
			} else if ( (id & V4L2_STD_PAL_D) == V4L2_STD_PAL_D) {
				curr_id = V4L2_STD_PAL_D;
			} else if ( (id & V4L2_STD_PAL_D1) == V4L2_STD_PAL_D1) {
				curr_id = V4L2_STD_PAL_D1;
			} else if ( (id & V4L2_STD_PAL_K) == V4L2_STD_PAL_K) {
				curr_id = V4L2_STD_PAL_K;
			} else if ( (id & V4L2_STD_PAL_M) == V4L2_STD_PAL_M) {
				curr_id = V4L2_STD_PAL_M;
			} else if ( (id & V4L2_STD_PAL_N) == V4L2_STD_PAL_N) {
				curr_id = V4L2_STD_PAL_N;
			} else if ( (id & V4L2_STD_PAL_Nc) == V4L2_STD_PAL_Nc) {
				curr_id = V4L2_STD_PAL_Nc;
			} else if ( (id & V4L2_STD_PAL_60) == V4L2_STD_PAL_60) {
				curr_id = V4L2_STD_PAL_60;
			} else if ( (id & V4L2_STD_NTSC) == V4L2_STD_NTSC) {
				curr_id = V4L2_STD_NTSC;
			} else if ( (id & V4L2_STD_NTSC_M) == V4L2_STD_NTSC_M) {
				curr_id = V4L2_STD_NTSC_M;
			} else if ( (id & V4L2_STD_NTSC_M_JP) == V4L2_STD_NTSC_M_JP) {
				curr_id = V4L2_STD_NTSC_M_JP;
			} else if ( (id & V4L2_STD_NTSC_443) == V4L2_STD_NTSC_443) {
				curr_id = V4L2_STD_NTSC_443;
			} else if ( (id & V4L2_STD_NTSC_M_KR) == V4L2_STD_NTSC_M_KR) {
				curr_id = V4L2_STD_NTSC_M_KR;
			} else if ( (id & V4L2_STD_SECAM) == V4L2_STD_SECAM) {
				curr_id = V4L2_STD_SECAM;
			} else if ( (id & V4L2_STD_SECAM_DK) == V4L2_STD_SECAM_DK) {
				curr_id = V4L2_STD_SECAM_DK;
			} else if ( (id & V4L2_STD_SECAM_B) == V4L2_STD_SECAM_B) {
				curr_id = V4L2_STD_SECAM_B;
			} else if ( (id & V4L2_STD_SECAM_D) == V4L2_STD_SECAM_D) {
				curr_id = V4L2_STD_SECAM_D;
			} else if ( (id & V4L2_STD_SECAM_G) == V4L2_STD_SECAM_G) {
				curr_id = V4L2_STD_SECAM_G;
			} else if ( (id & V4L2_STD_SECAM_H) == V4L2_STD_SECAM_H) {
				curr_id = V4L2_STD_SECAM_H;
			} else if ( (id & V4L2_STD_SECAM_K) == V4L2_STD_SECAM_K) {
				curr_id = V4L2_STD_SECAM_K;
			} else if ( (id & V4L2_STD_SECAM_K1) == V4L2_STD_SECAM_K1) {
				curr_id = V4L2_STD_SECAM_K1;
			} else if ( (id & V4L2_STD_SECAM_L) == V4L2_STD_SECAM_L) {
				curr_id = V4L2_STD_SECAM_L;
			} else if ( (id & V4L2_STD_SECAM_LC) == V4L2_STD_SECAM_LC) {
				curr_id = V4L2_STD_SECAM_LC;
			} else {
				break;
			}
			id &= ~curr_id;
		}
		if (i<=index)
			return -EINVAL;

		v4l2_video_std_construct(p, curr_id,v4l2_norm_to_name(curr_id));
		p->index = index;

		dbgarg (cmd, "index=%d, id=%Ld, name=%s, fps=%d/%d, "
				"framelines=%d\n", p->index,
				(unsigned long long)p->id, p->name,
				p->frameperiod.numerator,
				p->frameperiod.denominator,
				p->framelines);

		ret=0;
		break;
	}
	case VIDIOC_G_STD:
	{
		v4l2_std_id *id = arg;

		*id = vfd->current_norm;

		dbgarg (cmd, "value=%Lu\n", (long long unsigned) *id);

		ret=0;
		break;
	}
	case VIDIOC_S_STD:
	{
		v4l2_std_id *id = arg,norm;

		dbgarg (cmd, "value=%Lu\n", (long long unsigned) *id);

		norm = (*id) & vfd->tvnorms;
		if ( vfd->tvnorms && !norm)	/* Check if std is supported */
			break;

		/* Calls the specific handler */
		if (vfd->vidioc_s_std)
			ret=vfd->vidioc_s_std(file, fh, &norm);
		else
			ret=-EINVAL;

		/* Updates standard information */
		if (ret>=0)
			vfd->current_norm=norm;

		break;
	}
	case VIDIOC_QUERYSTD:
	{
		v4l2_std_id *p=arg;

		if (!vfd->vidioc_querystd)
			break;
		ret=vfd->vidioc_querystd(file, fh, arg);
		if (!ret)
			dbgarg (cmd, "detected std=%Lu\n",
						(unsigned long long)*p);
		break;
	}
	/* ------ input switching ---------- */
	/* FIXME: Inputs can be handled inside videodev2 */
	case VIDIOC_ENUMINPUT:
	{
		struct v4l2_input *p=arg;
		int i=p->index;

		if (!vfd->vidioc_enum_input)
			break;
		memset(p, 0, sizeof(*p));
		p->index=i;

		ret=vfd->vidioc_enum_input(file, fh, p);
		if (!ret)
			dbgarg (cmd, "index=%d, name=%s, type=%d, "
					"audioset=%d, "
					"tuner=%d, std=%Ld, status=%d\n",
					p->index,p->name,p->type,p->audioset,
					p->tuner,
					(unsigned long long)p->std,
					p->status);
		break;
	}
	case VIDIOC_G_INPUT:
	{
		unsigned int *i = arg;

		if (!vfd->vidioc_g_input)
			break;
		ret=vfd->vidioc_g_input(file, fh, i);
		if (!ret)
			dbgarg (cmd, "value=%d\n",*i);
		break;
	}
	case VIDIOC_S_INPUT:
	{
		unsigned int *i = arg;

		if (!vfd->vidioc_s_input)
			break;
		dbgarg (cmd, "value=%d\n",*i);
		ret=vfd->vidioc_s_input(file, fh, *i);
		break;
	}

	/* ------ output switching ---------- */
	case VIDIOC_G_OUTPUT:
	{
		unsigned int *i = arg;

		if (!vfd->vidioc_g_output)
			break;
		ret=vfd->vidioc_g_output(file, fh, i);
		if (!ret)
			dbgarg (cmd, "value=%d\n",*i);
		break;
	}
	case VIDIOC_S_OUTPUT:
	{
		unsigned int *i = arg;

		if (!vfd->vidioc_s_output)
			break;
		dbgarg (cmd, "value=%d\n",*i);
		ret=vfd->vidioc_s_output(file, fh, *i);
		break;
	}

	/* --- controls ---------------------------------------------- */
	case VIDIOC_QUERYCTRL:
	{
		struct v4l2_queryctrl *p=arg;

		if (!vfd->vidioc_queryctrl)
			break;
		ret=vfd->vidioc_queryctrl(file, fh, p);

		if (!ret)
			dbgarg (cmd, "id=%d, type=%d, name=%s, "
					"min/max=%d/%d,"
					" step=%d, default=%d, flags=0x%08x\n",
					p->id,p->type,p->name,p->minimum,
					p->maximum,p->step,p->default_value,
					p->flags);
		break;
	}
	case VIDIOC_G_CTRL:
	{
		struct v4l2_control *p = arg;

		if (!vfd->vidioc_g_ctrl)
			break;
		dbgarg(cmd, "Enum for index=%d\n", p->id);

		ret=vfd->vidioc_g_ctrl(file, fh, p);
		if (!ret)
			dbgarg2 ( "id=%d, value=%d\n", p->id, p->value);
		break;
	}
	case VIDIOC_S_CTRL:
	{
		struct v4l2_control *p = arg;

		if (!vfd->vidioc_s_ctrl)
			break;
		dbgarg (cmd, "id=%d, value=%d\n", p->id, p->value);

		ret=vfd->vidioc_s_ctrl(file, fh, p);
		break;
	}
	case VIDIOC_G_EXT_CTRLS:
	{
		struct v4l2_ext_controls *p = arg;

		if (vfd->vidioc_g_ext_ctrls) {
			dbgarg(cmd, "count=%d\n", p->count);

			ret=vfd->vidioc_g_ext_ctrls(file, fh, p);
		}
		break;
	}
	case VIDIOC_S_EXT_CTRLS:
	{
		struct v4l2_ext_controls *p = arg;

		if (vfd->vidioc_s_ext_ctrls) {
			dbgarg(cmd, "count=%d\n", p->count);

			ret=vfd->vidioc_s_ext_ctrls(file, fh, p);
		}
		break;
	}
	case VIDIOC_TRY_EXT_CTRLS:
	{
		struct v4l2_ext_controls *p = arg;

		if (vfd->vidioc_try_ext_ctrls) {
			dbgarg(cmd, "count=%d\n", p->count);

			ret=vfd->vidioc_try_ext_ctrls(file, fh, p);
		}
		break;
	}
	case VIDIOC_QUERYMENU:
	{
		struct v4l2_querymenu *p=arg;
		if (!vfd->vidioc_querymenu)
			break;
		ret=vfd->vidioc_querymenu(file, fh, p);
		if (!ret)
			dbgarg (cmd, "id=%d, index=%d, name=%s\n",
						p->id,p->index,p->name);
		break;
	}
	/* --- audio ---------------------------------------------- */
	case VIDIOC_ENUMAUDIO:
	{
		struct v4l2_audio *p=arg;

		if (!vfd->vidioc_enumaudio)
			break;
		dbgarg(cmd, "Enum for index=%d\n", p->index);
		ret=vfd->vidioc_enumaudio(file, fh, p);
		if (!ret)
			dbgarg2("index=%d, name=%s, capability=%d, "
					"mode=%d\n",p->index,p->name,
					p->capability, p->mode);
		break;
	}
	case VIDIOC_G_AUDIO:
	{
		struct v4l2_audio *p=arg;
		__u32 index=p->index;

		if (!vfd->vidioc_g_audio)
			break;

		memset(p,0,sizeof(*p));
		p->index=index;
		dbgarg(cmd, "Get for index=%d\n", p->index);
		ret=vfd->vidioc_g_audio(file, fh, p);
		if (!ret)
			dbgarg2("index=%d, name=%s, capability=%d, "
					"mode=%d\n",p->index,
					p->name,p->capability, p->mode);
		break;
	}
	case VIDIOC_S_AUDIO:
	{
		struct v4l2_audio *p=arg;

		if (!vfd->vidioc_s_audio)
			break;
		dbgarg(cmd, "index=%d, name=%s, capability=%d, "
					"mode=%d\n", p->index, p->name,
					p->capability, p->mode);
		ret=vfd->vidioc_s_audio(file, fh, p);
		break;
	}
	case VIDIOC_ENUMAUDOUT:
	{
		struct v4l2_audioout *p=arg;

		if (!vfd->vidioc_enumaudout)
			break;
		dbgarg(cmd, "Enum for index=%d\n", p->index);