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V4L/DVB (12797): tm6000: Allow selecting audio bitrate 

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Mauro Carvalho Chehab 2007-09-19 07:36:34 -03:00 committed by Mauro Carvalho Chehab
parent 7e2fdf025c
commit c13dd70411
3 changed files with 29 additions and 9 deletions
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2
drivers/staging/tm6000/tm6000-core.c
View File

@ -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);

35
drivers/staging/tm6000/tm6000-video.c
View File

@ -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;
/* memory for video
Should be at least
Vres x Vres x 2 bytes/pixel by frame */
urbsize=buf->vb.size;
/* 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 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);

1
drivers/staging/tm6000/tm6000.h
View File

@ -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;