diff options
| author | Mauro Carvalho Chehab <mchehab@infradead.org> | 2007-09-19 07:36:34 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2010-05-18 00:39:43 -0300 |
| commit | c13dd70411e87e1ad1ccca0ba9bc3cf0a555e5a0 (patch) | |
| tree | 8ccdf3ea91f3cf7e4d3dc0320bb5fe633920e52c /drivers/staging/tm6000 | |
| parent | 7e2fdf025ccb8c8ad9dfd3ec09d1fda73038593b (diff) | |
V4L/DVB (12797): tm6000: Allow selecting audio bitrate
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/staging/tm6000')
| -rw-r--r-- | drivers/staging/tm6000/tm6000-core.c | 2 | ||||
| -rw-r--r-- | drivers/staging/tm6000/tm6000-video.c | 37 | ||||
| -rw-r--r-- | drivers/staging/tm6000/tm6000.h | 1 |
3 files changed, 30 insertions, 10 deletions
diff --git a/drivers/staging/tm6000/tm6000-core.c b/drivers/staging/tm6000/tm6000-core.c index 5497b7c4aea8..3f2727d5b957 100644 --- a/drivers/staging/tm6000/tm6000-core.c +++ b/drivers/staging/tm6000/tm6000-core.c @@ -722,9 +722,11 @@ printk("Original value=%d\n",val); switch (bitrate) { case 44100: val|=0xd0; + dev->audio_bitrate=bitrate; break; case 48000: val|=0x60; + dev->audio_bitrate=bitrate; break; } val=tm6000_set_reg (dev, REQ_07_SET_GET_AVREG, 0xeb, val); diff --git a/drivers/staging/tm6000/tm6000-video.c b/drivers/staging/tm6000/tm6000-video.c index 65510d853814..ced4b478f6b1 100644 --- a/drivers/staging/tm6000/tm6000-video.c +++ b/drivers/staging/tm6000/tm6000-video.c @@ -566,8 +566,7 @@ static int tm6000_prepare_isoc(struct tm6000_core *dev, dev->isoc_ctl.urb[i] = urb; dev->isoc_ctl.transfer_buffer[i] = usb_buffer_alloc(dev->udev, - sb_size, GFP_KERNEL, - &dev->isoc_ctl.urb[i]->transfer_dma); + sb_size, GFP_KERNEL, &urb->transfer_dma); if (!dev->isoc_ctl.transfer_buffer[i]) { tm6000_err ("unable to allocate %i bytes for transfer" " buffer %i\n", sb_size, i); @@ -787,14 +786,32 @@ buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb, urb_init=1; if (urb_init) { - /* Should allocate/request at least h - res x v res x 2 bytes/pixel */ - urbsize=(buf->vb.size+dev->max_isoc_in-1)/dev->max_isoc_in; - - /* Hack to allocate memory for Video + Audio */ - /* FIXME: should also consider header ovehead of - 4 bytes/180 bytes */ - urbsize+=((48000*4+24)/25+dev->max_isoc_in-1)/dev->max_isoc_in; + /* memory for video + Should be at least + Vres x Vres x 2 bytes/pixel by frame */ + urbsize=buf->vb.size; + + /* memory for audio + Should be at least + bitrate * 2 channels * 2 bytes / frame rate */ + if (dev->norm & V4L2_STD_525_60) { + urbsize+=(dev->audio_bitrate*4+29)/30; + } else { + urbsize+=(dev->audio_bitrate*4+24)/25; + } + + /* each audio frame seeems to have a frame number + with 2 bytes */ + urbsize+=2; + + /* Add 4 bytes by each 180 bytes frame */ + urbsize+=((urbsize+179)/180)*4; + + /* Round to an enough number of URBs */ + urbsize=(urbsize+dev->max_isoc_in-1)/dev->max_isoc_in; + + +printk("Allocating %d packets to handle %lu size\n", urbsize,buf->vb.size); dprintk(dev, V4L2_DEBUG_QUEUE, "Allocating %d packets to handle " "%lu size\n", urbsize,buf->vb.size); diff --git a/drivers/staging/tm6000/tm6000.h b/drivers/staging/tm6000/tm6000.h index 479b4fb520dd..a5977e7ce51b 100644 --- a/drivers/staging/tm6000/tm6000.h +++ b/drivers/staging/tm6000/tm6000.h @@ -137,6 +137,7 @@ struct tm6000_core { /* Demodulator configuration */ int demod_addr; /* demodulator address */ + int audio_bitrate; /* i2c i/o */ struct i2c_adapter i2c_adap; struct i2c_client i2c_client; |