diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-24 11:21:08 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-24 11:21:08 -0700 |
commit | c328d54cd4ad120d76284e46dcca6c6cf996154a (patch) | |
tree | 104c023be66faa5fce6e0a56c0a6d13c62fd21e5 /drivers/media/dvb/dvb-core/dmxdev.c | |
parent | 346ad4b7fe392571f19314f153db9151dbc1d82b (diff) | |
parent | b0166ab3a6ae6d7af8d9a21a7836154963c69a11 (diff) |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/v4l-dvb
* git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/v4l-dvb: (452 commits)
V4L/DVB (7731): tuner-xc2028: fix signal strength calculus
V4L/DVB (7730): tuner-xc2028: Fix SCODE load for MTS firmwares
V4L/DVB (7729): Fix VIDIOCGAP corruption in ivtv
V4L/DVB (7728): tea5761: bugzilla #10462: tea5761 autodetection code were broken
V4L/DVB (7726): cx23885: Enable cx23417 support on the HVR1800
V4L/DVB (7725): cx23885: Add generic cx23417 hardware encoder support
V4L/DVB (7723): pvrusb2: Clean up input selection list generation in V4L interface
V4L/DVB (7722): pvrusb2: Implement FM radio support for Gotview USB2.0 DVD 2
V4L/DVB (7721): pvrusb2: Restructure cx23416 firmware loading to have a common exit point
V4L/DVB (7720): pvrusb2: Fix bad error code on cx23416 firmware load failure
V4L/DVB (7719): pvrusb2: Implement input selection enforcement
V4L/DVB (7718): pvrusb2-dvb: update Kbuild selections
V4L/DVB (7717): pvrusb2-dvb: add DVB-T support for Hauppauge pvrusb2 model 73xxx
V4L/DVB (7716): pvrusb2: clean up global functions
V4L/DVB (7715): pvrusb2: Clean out all use of __FUNCTION__
V4L/DVB (7714): pvrusb2: Fix hang on module removal
V4L/DVB (7713): pvrusb2: Implement cleaner DVB kernel thread shutdown
V4L/DVB (7712): pvrusb2: Close connect/disconnect race
V4L/DVB (7711): pvrusb2: Fix race on module unload
V4L/DVB (7710): pvrusb2: Implement critical digital streaming quirk for onair devices
...
Diffstat (limited to 'drivers/media/dvb/dvb-core/dmxdev.c')
-rw-r--r-- | drivers/media/dvb/dvb-core/dmxdev.c | 87 |
1 files changed, 63 insertions, 24 deletions
diff --git a/drivers/media/dvb/dvb-core/dmxdev.c b/drivers/media/dvb/dvb-core/dmxdev.c index f94bc31e3b3..df5bef6a251 100644 --- a/drivers/media/dvb/dvb-core/dmxdev.c +++ b/drivers/media/dvb/dvb-core/dmxdev.c @@ -126,7 +126,7 @@ static int dvb_dvr_open(struct inode *inode, struct file *file) struct dmxdev *dmxdev = dvbdev->priv; struct dmx_frontend *front; - dprintk("function : %s\n", __FUNCTION__); + dprintk("function : %s\n", __func__); if (mutex_lock_interruptible(&dmxdev->mutex)) return -ERESTARTSYS; @@ -259,6 +259,39 @@ static ssize_t dvb_dvr_read(struct file *file, char __user *buf, size_t count, return ret; } +static int dvb_dvr_set_buffer_size(struct dmxdev *dmxdev, + unsigned long size) +{ + struct dvb_ringbuffer *buf = &dmxdev->dvr_buffer; + void *newmem; + void *oldmem; + + dprintk("function : %s\n", __func__); + + if (buf->size == size) + return 0; + if (!size) + return -EINVAL; + + newmem = vmalloc(size); + if (!newmem) + return -ENOMEM; + + oldmem = buf->data; + + spin_lock_irq(&dmxdev->lock); + buf->data = newmem; + buf->size = size; + + /* reset and not flush in case the buffer shrinks */ + dvb_ringbuffer_reset(buf); + spin_unlock_irq(&dmxdev->lock); + + vfree(oldmem); + + return 0; +} + static inline void dvb_dmxdev_filter_state_set(struct dmxdev_filter *dmxdevfilter, int state) { @@ -271,28 +304,32 @@ static int dvb_dmxdev_set_buffer_size(struct dmxdev_filter *dmxdevfilter, unsigned long size) { struct dvb_ringbuffer *buf = &dmxdevfilter->buffer; - void *mem; + void *newmem; + void *oldmem; if (buf->size == size) return 0; + if (!size) + return -EINVAL; if (dmxdevfilter->state >= DMXDEV_STATE_GO) return -EBUSY; + + newmem = vmalloc(size); + if (!newmem) + return -ENOMEM; + + oldmem = buf->data; + spin_lock_irq(&dmxdevfilter->dev->lock); - mem = buf->data; - buf->data = NULL; + buf->data = newmem; buf->size = size; - dvb_ringbuffer_flush(buf); + + /* reset and not flush in case the buffer shrinks */ + dvb_ringbuffer_reset(buf); spin_unlock_irq(&dmxdevfilter->dev->lock); - vfree(mem); - if (buf->size) { - mem = vmalloc(dmxdevfilter->buffer.size); - if (!mem) - return -ENOMEM; - spin_lock_irq(&dmxdevfilter->dev->lock); - buf->data = mem; - spin_unlock_irq(&dmxdevfilter->dev->lock); - } + vfree(oldmem); + return 0; } @@ -374,7 +411,8 @@ static int dvb_dmxdev_ts_callback(const u8 *buffer1, size_t buffer1_len, return 0; } - if (dmxdevfilter->params.pes.output == DMX_OUT_TAP) + if (dmxdevfilter->params.pes.output == DMX_OUT_TAP + || dmxdevfilter->params.pes.output == DMX_OUT_TSDEMUX_TAP) buffer = &dmxdevfilter->buffer; else buffer = &dmxdevfilter->dev->dvr_buffer; @@ -550,7 +588,7 @@ static int dvb_dmxdev_filter_start(struct dmxdev_filter *filter) dvb_dmxdev_section_callback); if (ret < 0) { printk("DVB (%s): could not alloc feed\n", - __FUNCTION__); + __func__); return ret; } @@ -558,7 +596,7 @@ static int dvb_dmxdev_filter_start(struct dmxdev_filter *filter) (para->flags & DMX_CHECK_CRC) ? 1 : 0); if (ret < 0) { printk("DVB (%s): could not set feed\n", - __FUNCTION__); + __func__); dvb_dmxdev_feed_restart(filter); return ret; } @@ -620,9 +658,10 @@ static int dvb_dmxdev_filter_start(struct dmxdev_filter *filter) if (otype == DMX_OUT_TS_TAP) ts_type |= TS_PACKET; - - if (otype == DMX_OUT_TAP) - ts_type |= TS_PAYLOAD_ONLY | TS_PACKET; + else if (otype == DMX_OUT_TSDEMUX_TAP) + ts_type |= TS_PACKET | TS_DEMUX; + else if (otype == DMX_OUT_TAP) + ts_type |= TS_PACKET | TS_DEMUX | TS_PAYLOAD_ONLY; ret = dmxdev->demux->allocate_ts_feed(dmxdev->demux, tsfeed, @@ -732,7 +771,7 @@ static int dvb_dmxdev_filter_set(struct dmxdev *dmxdev, struct dmxdev_filter *dmxdevfilter, struct dmx_sct_filter_params *params) { - dprintk("function : %s\n", __FUNCTION__); + dprintk("function : %s\n", __func__); dvb_dmxdev_filter_stop(dmxdevfilter); @@ -1007,6 +1046,7 @@ static int dvb_dvr_do_ioctl(struct inode *inode, struct file *file, { struct dvb_device *dvbdev = file->private_data; struct dmxdev *dmxdev = dvbdev->priv; + unsigned long arg = (unsigned long)parg; int ret; if (mutex_lock_interruptible(&dmxdev->mutex)) @@ -1014,8 +1054,7 @@ static int dvb_dvr_do_ioctl(struct inode *inode, struct file *file, switch (cmd) { case DMX_SET_BUFFER_SIZE: - // FIXME: implement - ret = 0; + ret = dvb_dvr_set_buffer_size(dmxdev, arg); break; default: @@ -1038,7 +1077,7 @@ static unsigned int dvb_dvr_poll(struct file *file, poll_table *wait) struct dmxdev *dmxdev = dvbdev->priv; unsigned int mask = 0; - dprintk("function : %s\n", __FUNCTION__); + dprintk("function : %s\n", __func__); poll_wait(file, &dmxdev->dvr_buffer.queue, wait); |