diff options
| -rw-r--r-- | drivers/media/video/saa7134/saa6752hs.c | 89 | ||||
| -rw-r--r-- | drivers/media/video/saa7134/saa7134-empress.c | 20 |
2 files changed, 90 insertions, 19 deletions
diff --git a/drivers/media/video/saa7134/saa6752hs.c b/drivers/media/video/saa7134/saa6752hs.c index cee13584c9c..fe6abe34168 100644 --- a/drivers/media/video/saa7134/saa6752hs.c +++ b/drivers/media/video/saa7134/saa6752hs.c @@ -32,9 +32,32 @@ MODULE_LICENSE("GPL"); static struct i2c_driver driver; static struct i2c_client client_template; +enum saa6752hs_videoformat { + SAA6752HS_VF_D1 = 0, /* standard D1 video format: 720x576 */ + SAA6752HS_VF_2_3_D1 = 1,/* 2/3D1 video format: 480x576 */ + SAA6752HS_VF_1_2_D1 = 2,/* 1/2D1 video format: 352x576 */ + SAA6752HS_VF_SIF = 3, /* SIF video format: 352x288 */ + SAA6752HS_VF_UNKNOWN, +}; + +static const struct v4l2_format v4l2_format_table[] = +{ + [SAA6752HS_VF_D1] = { + .fmt.pix.width = 720, .fmt.pix.height = 576 }, + [SAA6752HS_VF_2_3_D1] = { + .fmt.pix.width = 480, .fmt.pix.height = 576 }, + [SAA6752HS_VF_1_2_D1] = { + .fmt.pix.width = 352, .fmt.pix.height = 576 }, + [SAA6752HS_VF_SIF] = { + .fmt.pix.width = 352, .fmt.pix.height = 288 }, + [SAA6752HS_VF_UNKNOWN] = { + .fmt.pix.width = 0, .fmt.pix.height = 0}, +}; + struct saa6752hs_state { struct i2c_client client; struct v4l2_mpeg_compression params; + enum saa6752hs_videoformat video_format; }; enum saa6752hs_command { @@ -256,6 +279,51 @@ static int saa6752hs_set_bitrate(struct i2c_client* client, return 0; } +static void saa6752hs_set_subsampling(struct i2c_client* client, + struct v4l2_format* f) +{ + struct saa6752hs_state *h = i2c_get_clientdata(client); + int dist_352, dist_480, dist_720; + + /* + FIXME: translate and round width/height into EMPRESS + subsample type: + + type | PAL | NTSC + --------------------------- + SIF | 352x288 | 352x240 + 1/2 D1 | 352x576 | 352x480 + 2/3 D1 | 480x576 | 480x480 + D1 | 720x576 | 720x480 + */ + + dist_352 = abs(f->fmt.pix.width - 352); + dist_480 = abs(f->fmt.pix.width - 480); + dist_720 = abs(f->fmt.pix.width - 720); + if (dist_720 < dist_480) { + f->fmt.pix.width = 720; + f->fmt.pix.height = 576; + h->video_format = SAA6752HS_VF_D1; + } + else if (dist_480 < dist_352) { + f->fmt.pix.width = 480; + f->fmt.pix.height = 576; + h->video_format = SAA6752HS_VF_2_3_D1; + } + else { + f->fmt.pix.width = 352; + if (abs(f->fmt.pix.height - 576) < + abs(f->fmt.pix.height - 288)) { + f->fmt.pix.height = 576; + h->video_format = SAA6752HS_VF_1_2_D1; + } + else { + f->fmt.pix.height = 288; + h->video_format = SAA6752HS_VF_SIF; + } + } +} + static void saa6752hs_set_params(struct i2c_client* client, struct v4l2_mpeg_compression* params) @@ -315,7 +383,7 @@ static int saa6752hs_init(struct i2c_client* client) // Set video format - must be done first as it resets other settings buf[0] = 0x41; - buf[1] = 0 /* MPEG_VIDEO_FORMAT_D1 */; + buf[1] = h->video_format; i2c_master_send(client, buf, 2); // set bitrate @@ -494,6 +562,25 @@ saa6752hs_command(struct i2c_client *client, unsigned int cmd, void *arg) case VIDIOC_G_MPEGCOMP: *params = h->params; break; + case VIDIOC_G_FMT: + { + struct v4l2_format *f = arg; + + if (h->video_format == SAA6752HS_VF_UNKNOWN) + h->video_format = SAA6752HS_VF_D1; + f->fmt.pix.width = + v4l2_format_table[h->video_format].fmt.pix.width; + f->fmt.pix.height = + v4l2_format_table[h->video_format].fmt.pix.height; + break ; + } + case VIDIOC_S_FMT: + { + struct v4l2_format *f = arg; + + saa6752hs_set_subsampling(client, f); + break; + } default: /* nothing */ break; diff --git a/drivers/media/video/saa7134/saa7134-empress.c b/drivers/media/video/saa7134/saa7134-empress.c index 2021e099e35..fa135733690 100644 --- a/drivers/media/video/saa7134/saa7134-empress.c +++ b/drivers/media/video/saa7134/saa7134-empress.c @@ -233,10 +233,7 @@ static int ts_do_ioctl(struct inode *inode, struct file *file, memset(f,0,sizeof(*f)); f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; - /* FIXME: translate subsampling type EMPRESS into - * width/height: */ - f->fmt.pix.width = 720; /* D1 */ - f->fmt.pix.height = 576; + saa7134_i2c_call_clients(dev, cmd, arg); f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG; f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets; return 0; @@ -249,20 +246,7 @@ static int ts_do_ioctl(struct inode *inode, struct file *file, if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) return -EINVAL; - /* - FIXME: translate and round width/height into EMPRESS - subsample type: - - type | PAL | NTSC - --------------------------- - SIF | 352x288 | 352x240 - 1/2 D1 | 352x576 | 352x480 - 2/3 D1 | 480x576 | 480x480 - D1 | 720x576 | 720x480 - */ - - f->fmt.pix.width = 720; /* D1 */ - f->fmt.pix.height = 576; + saa7134_i2c_call_clients(dev, cmd, arg); f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG; f->fmt.pix.sizeimage = TS_PACKET_SIZE* dev->ts.nr_packets; return 0; |