From 2d50f847c62acbafa25dc690d0fe65b8b908a326 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Mon, 23 Jan 2006 17:11:08 -0200 Subject: [PATCH] V4L/DVB (3422): Implemented VIDIOC_G_FMT/S_FMT for sliced VBI - Implemented VIDIOC_G_FMT/S_FMT for sliced VBI - VIDIOC_S_FMT now calls a function Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/em28xx/em28xx-video.c | 308 +++++++++++----------- 1 file changed, 155 insertions(+), 153 deletions(-) diff --git a/drivers/media/video/em28xx/em28xx-video.c b/drivers/media/video/em28xx/em28xx-video.c index e4e82ae716bf..d8d02c44c9d2 100644 --- a/drivers/media/video/em28xx/em28xx-video.c +++ b/drivers/media/video/em28xx/em28xx-video.c @@ -897,7 +897,6 @@ static int em28xx_set_norm(struct em28xx *dev, int width, int height) return 0; } - static int em28xx_get_fmt(struct em28xx *dev, struct v4l2_format *format) { em28xx_videodbg("VIDIOC_G_FMT: type=%s\n", @@ -909,7 +908,9 @@ static int em28xx_get_fmt(struct em28xx *dev, struct v4l2_format *format) "V4L2_BUF_TYPE_SLICED_VBI_CAPTURE " : "not supported"); - if (format->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { + switch (format->type) { + case V4L2_BUF_TYPE_VIDEO_CAPTURE: + { format->fmt.pix.width = dev->width; format->fmt.pix.height = dev->height; format->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV; @@ -920,12 +921,161 @@ static int em28xx_get_fmt(struct em28xx *dev, struct v4l2_format *format) em28xx_videodbg("VIDIOC_G_FMT: %dx%d\n", dev->width, dev->height); - return 0; + break; + } + + case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: + { + format->fmt.sliced.service_set=0; + + em28xx_i2c_call_clients(dev,VIDIOC_G_FMT,format); + + if (format->fmt.sliced.service_set==0) + return -EINVAL; + + break; } - return -EINVAL; + default: + return -EINVAL; + } + return (0); } +static int em28xx_set_fmt(struct em28xx *dev, unsigned int cmd, struct v4l2_format *format) +{ + u32 i; + int ret = 0; + int width = format->fmt.pix.width; + int height = format->fmt.pix.height; + unsigned int hscale, vscale; + unsigned int maxh, maxw; + + maxw = norm_maxw(dev); + maxh = norm_maxh(dev); + + em28xx_videodbg("%s: type=%s\n", + cmd == VIDIOC_TRY_FMT ? + "VIDIOC_TRY_FMT" : "VIDIOC_S_FMT", + format->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ? + "V4L2_BUF_TYPE_VIDEO_CAPTURE" : + format->type == V4L2_BUF_TYPE_VBI_CAPTURE ? + "V4L2_BUF_TYPE_VBI_CAPTURE " : + "not supported"); + + if (format->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE) { + em28xx_i2c_call_clients(dev,VIDIOC_G_FMT,format); + + if (format->fmt.sliced.service_set==0) + return -EINVAL; + + return 0; + } + + + if (format->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) + return -EINVAL; + + em28xx_videodbg("%s: requested %dx%d\n", + cmd == VIDIOC_TRY_FMT ? + "VIDIOC_TRY_FMT" : "VIDIOC_S_FMT", + format->fmt.pix.width, format->fmt.pix.height); + + /* FIXME: Move some code away from here */ + /* width must even because of the YUYV format */ + /* height must be even because of interlacing */ + height &= 0xfffe; + width &= 0xfffe; + + if (height < 32) + height = 32; + if (height > maxh) + height = maxh; + if (width < 48) + width = 48; + if (width > maxw) + width = maxw; + + if(dev->is_em2800){ + /* the em2800 can only scale down to 50% */ + if(height % (maxh / 2)) + height=maxh; + if(width % (maxw / 2)) + width=maxw; + /* according to empiatech support */ + /* the MaxPacketSize is to small to support */ + /* framesizes larger than 640x480 @ 30 fps */ + /* or 640x576 @ 25 fps. As this would cut */ + /* of a part of the image we prefer */ + /* 360x576 or 360x480 for now */ + if(width == maxw && height == maxh) + width /= 2; + } + + if ((hscale = + (((unsigned long)maxw) << 12) / width - 4096L) >= + 0x4000) + hscale = 0x3fff; + width = + (((unsigned long)maxw) << 12) / (hscale + 4096L); + + if ((vscale = + (((unsigned long)maxh) << 12) / height - 4096L) >= + 0x4000) + vscale = 0x3fff; + height = + (((unsigned long)maxh) << 12) / (vscale + 4096L); + + format->fmt.pix.width = width; + format->fmt.pix.height = height; + format->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV; + format->fmt.pix.bytesperline = width * 2; + format->fmt.pix.sizeimage = width * 2 * height; + format->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; + format->fmt.pix.field = V4L2_FIELD_INTERLACED; + + em28xx_videodbg("%s: returned %dx%d (%d, %d)\n", + cmd == + VIDIOC_TRY_FMT ? "VIDIOC_TRY_FMT" : + "VIDIOC_S_FMT", format->fmt.pix.width, + format->fmt.pix.height, hscale, vscale); + + if (cmd == VIDIOC_TRY_FMT) + return 0; + + for (i = 0; i < dev->num_frames; i++) + if (dev->frame[i].vma_use_count) { + em28xx_videodbg("VIDIOC_S_FMT failed. " + "Unmap the buffers first.\n"); + return -EINVAL; + } + + /* stop io in case it is already in progress */ + if (dev->stream == STREAM_ON) { + em28xx_videodbg("VIDIOC_SET_FMT: interupting stream\n"); + if ((ret = em28xx_stream_interrupt(dev))) + return ret; + } + + em28xx_release_buffers(dev); + dev->io = IO_NONE; + + /* set new image size */ + dev->width = width; + dev->height = height; + dev->frame_size = dev->width * dev->height * 2; + dev->field_size = dev->frame_size >> 1; /*both_fileds ? dev->frame_size>>1 : dev->frame_size; */ + dev->bytesperline = dev->width * 2; + dev->hscale = hscale; + dev->vscale = vscale; + em28xx_uninit_isoc(dev); + em28xx_set_alternate(dev); + em28xx_capture_start(dev, 1); + em28xx_resolution_set(dev); + em28xx_init_isoc(dev); + + return 0; +} /* * em28xx_v4l2_do_ioctl() @@ -983,24 +1133,6 @@ static int em28xx_do_ioctl(struct inode *inode, struct file *filp, em28xx_set_norm(dev, dev->width, dev->height); -/* - dev->width=norm_maxw(dev); - dev->height=norm_maxh(dev); - dev->frame_size=dev->width*dev->height*2; - dev->field_size=dev->frame_size>>1; - dev->bytesperline=dev->width*2; - dev->hscale=0; - dev->vscale=0; - - em28xx_resolution_set(dev); -*/ -/* - em28xx_uninit_isoc(dev); - em28xx_set_alternate(dev); - em28xx_capture_start(dev, 1); - em28xx_resolution_set(dev); - em28xx_init_isoc(dev); -*/ em28xx_i2c_call_clients(dev, DECODER_SET_NORM, &tvnorms[i].mode); em28xx_i2c_call_clients(dev, VIDIOC_S_STD, @@ -1396,138 +1528,8 @@ static int em28xx_video_do_ioctl(struct inode *inode, struct file *filp, case VIDIOC_TRY_FMT: case VIDIOC_S_FMT: - { - struct v4l2_format *format = arg; - u32 i; - int ret = 0; - int width = format->fmt.pix.width; - int height = format->fmt.pix.height; - unsigned int hscale, vscale; - unsigned int maxh, maxw; - - maxw = norm_maxw(dev); - maxh = norm_maxh(dev); - -/* int both_fields; */ - - em28xx_videodbg("%s: type=%s\n", - cmd == - VIDIOC_TRY_FMT ? "VIDIOC_TRY_FMT" : - "VIDIOC_S_FMT", - format->type == - V4L2_BUF_TYPE_VIDEO_CAPTURE ? - "V4L2_BUF_TYPE_VIDEO_CAPTURE" : format->type == - V4L2_BUF_TYPE_VBI_CAPTURE ? - "V4L2_BUF_TYPE_VBI_CAPTURE " : - "not supported"); - - if (format->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) - return -EINVAL; - - em28xx_videodbg("%s: requested %dx%d\n", - cmd == - VIDIOC_TRY_FMT ? "VIDIOC_TRY_FMT" : - "VIDIOC_S_FMT", format->fmt.pix.width, - format->fmt.pix.height); - - /* FIXME: Move some code away from here */ - /* width must even because of the YUYV format */ - /* height must be even because of interlacing */ - height &= 0xfffe; - width &= 0xfffe; - - if (height < 32) - height = 32; - if (height > maxh) - height = maxh; - if (width < 48) - width = 48; - if (width > maxw) - width = maxw; - - if(dev->is_em2800){ - /* the em2800 can only scale down to 50% */ - if(height % (maxh / 2)) - height=maxh; - if(width % (maxw / 2)) - width=maxw; - /* according to empiatech support */ - /* the MaxPacketSize is to small to support */ - /* framesizes larger than 640x480 @ 30 fps */ - /* or 640x576 @ 25 fps. As this would cut */ - /* of a part of the image we prefer */ - /* 360x576 or 360x480 for now */ - if(width == maxw && height == maxh) - width /= 2; - } - - if ((hscale = - (((unsigned long)maxw) << 12) / width - 4096L) >= - 0x4000) - hscale = 0x3fff; - width = - (((unsigned long)maxw) << 12) / (hscale + 4096L); - - if ((vscale = - (((unsigned long)maxh) << 12) / height - 4096L) >= - 0x4000) - vscale = 0x3fff; - height = - (((unsigned long)maxh) << 12) / (vscale + 4096L); - - format->fmt.pix.width = width; - format->fmt.pix.height = height; - format->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV; - format->fmt.pix.bytesperline = width * 2; - format->fmt.pix.sizeimage = width * 2 * height; - format->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; - format->fmt.pix.field = V4L2_FIELD_INTERLACED; - - em28xx_videodbg("%s: returned %dx%d (%d, %d)\n", - cmd == - VIDIOC_TRY_FMT ? "VIDIOC_TRY_FMT" : - "VIDIOC_S_FMT", format->fmt.pix.width, - format->fmt.pix.height, hscale, vscale); - - if (cmd == VIDIOC_TRY_FMT) - return 0; - - for (i = 0; i < dev->num_frames; i++) - if (dev->frame[i].vma_use_count) { - em28xx_videodbg("VIDIOC_S_FMT failed. " - "Unmap the buffers first.\n"); - return -EINVAL; - } - - /* stop io in case it is already in progress */ - if (dev->stream == STREAM_ON) { - em28xx_videodbg("VIDIOC_SET_FMT: interupting stream\n"); - if ((ret = em28xx_stream_interrupt(dev))) - return ret; - } - - em28xx_release_buffers(dev); - dev->io = IO_NONE; - - /* set new image size */ - dev->width = width; - dev->height = height; - dev->frame_size = dev->width * dev->height * 2; - dev->field_size = dev->frame_size >> 1; /*both_fileds ? dev->frame_size>>1 : dev->frame_size; */ - dev->bytesperline = dev->width * 2; - dev->hscale = hscale; - dev->vscale = vscale; -/* dev->both_fileds = both_fileds; */ - em28xx_uninit_isoc(dev); - em28xx_set_alternate(dev); - em28xx_capture_start(dev, 1); - em28xx_resolution_set(dev); - em28xx_init_isoc(dev); - - return 0; - } + return em28xx_set_fmt(dev, cmd, (struct v4l2_format *)arg); - /* --- streaming capture ------------------------------------- */ case VIDIOC_REQBUFS: { struct v4l2_requestbuffers *rb = arg; -- 2.30.2