diff options
author | Mauro Carvalho Chehab <mchehab@infradead.org> | 2007-09-22 02:06:25 -0300 |
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committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2010-05-18 00:39:45 -0300 |
commit | a228618c1a2c15da35f8cc60286a25541fbc6348 (patch) | |
tree | dffada0bf8f89bd1a82deced6c090dd993037320 /drivers/staging/tm6000/tm6000-video.c | |
parent | cc6c60d912ceeb390a0969a7c76dc05fa3fffaa9 (diff) | |
download | op-kernel-dev-a228618c1a2c15da35f8cc60286a25541fbc6348.zip op-kernel-dev-a228618c1a2c15da35f8cc60286a25541fbc6348.tar.gz |
V4L/DVB (12800): tm6000: fix tm6000 analog video buffer handling
Previously, there were no sync between video buffer filling and received
URBs. So, the presented image were a mix of frame and frame-1. Now, a
filled buffer should contain only data for that frame.
allocates a maximum of 64 KB per each URB area. This fixed two bugs:
- Sometimes, there were no available continuos block of about 1 MB;
- Image weren't not properly updated, since parts of the URBs aren't
updated.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/staging/tm6000/tm6000-video.c')
-rw-r--r-- | drivers/staging/tm6000/tm6000-video.c | 198 |
1 files changed, 140 insertions, 58 deletions
diff --git a/drivers/staging/tm6000/tm6000-video.c b/drivers/staging/tm6000/tm6000-video.c index 372850c3..f7e8a37 100644 --- a/drivers/staging/tm6000/tm6000-video.c +++ b/drivers/staging/tm6000/tm6000-video.c @@ -147,12 +147,6 @@ static int inline get_next_buf (struct tm6000_dmaqueue *dma_q, *buf = list_entry(dma_q->active.next, struct tm6000_buffer, vb.queue); - /* Nobody is waiting something to be done, just return */ - if (!waitqueue_active(&(*buf)->vb.done)) { - mod_timer(&dma_q->timeout, jiffies+BUFFER_TIMEOUT); - return -1; - } - return 1; } @@ -160,8 +154,19 @@ static int inline get_next_buf (struct tm6000_dmaqueue *dma_q, * Announces that a buffer were filled and request the next */ static void inline buffer_filled (struct tm6000_core *dev, + struct tm6000_dmaqueue *dma_q, struct tm6000_buffer *buf) { + /* Nobody is waiting something to be done, just return */ + if (!waitqueue_active(&buf->vb.done)) { + mod_timer(&dma_q->timeout, jiffies+BUFFER_TIMEOUT); + + printk(KERN_ERR "tm6000: buffer underrun at %ld\n", + jiffies); + + return; + } + /* Advice that buffer was filled */ dprintk(dev, V4L2_DEBUG_ISOC, "[%p/%d] wakeup\n",buf,buf->vb.i); buf->vb.state = STATE_DONE; @@ -182,23 +187,36 @@ static void inline buffer_filled (struct tm6000_core *dev, tm6000_err("copy_to_user failed.\n"); \ } + +const char *tm6000_msg_type[]= { + "unknown(0)", //0 + "video", //1 + "audio", //2 + "vbi", //3 + "pts", //4 + "err", //5 + "unknown(6)", //6 + "unknown(7)", //7 +}; + /* * Identify the tm5600/6000 buffer header type and properly handles */ -static u8 *copy_packet (struct urb *urb, u32 header, u8 *data, u8 *endp, +static int copy_packet (struct urb *urb, u32 header, u8 **ptr, u8 *endp, u8 *out_p, struct tm6000_buffer **buf) { struct tm6000_dmaqueue *dma_q = urb->context; struct tm6000_core *dev= container_of(dma_q,struct tm6000_core,vidq); - u8 *ptr=data; u8 c; unsigned int cmd, cpysize, pktsize, size, field, block, line, pos=0; + int rc=0; + /* FIXME: move to tm6000-isoc */ + static int last_line=-2, start_line=-2, last_field=-2; /* FIXME: this is the hardcoded window size */ - unsigned int linesize=720*2; + unsigned int linewidth=(*buf)->vb.width<<1; -//static int last_line=-2; if (!dev->isoc_ctl.cmd) { c=(header>>24) & 0xff; @@ -213,29 +231,71 @@ static u8 *copy_packet (struct urb *urb, u32 header, u8 *data, u8 *endp, /* Validates header fields */ if(size>TM6000_URB_MSG_LEN) size = TM6000_URB_MSG_LEN; - if(block>=8) - cmd = TM6000_URB_MSG_ERR; - /* FIXME: Mounts the image as field0+field1 - * It should, instead, check if the user selected - * entrelaced or non-entrelaced mode - */ - pos=((line<<1)+field)*linesize+block*TM6000_URB_MSG_LEN; + if (cmd == TM6000_URB_MSG_VIDEO) { + if ((block+1)*TM6000_URB_MSG_LEN>linewidth) + cmd = TM6000_URB_MSG_ERR; + + /* FIXME: Mounts the image as field0+field1 + * It should, instead, check if the user selected + * entrelaced or non-entrelaced mode + */ + pos= ((line<<1)+field)*linewidth + + block*TM6000_URB_MSG_LEN; + + /* Don't allow to write out of the buffer */ + if (pos+TM6000_URB_MSG_LEN > (*buf)->vb.size) { + dprintk(dev, V4L2_DEBUG_ISOC, + "ERR: size=%d, num=%d, line=%d, " + "field=%d\n", + size, block, line, field); - /* Don't allow to write out of the buffer */ - if (pos+TM6000_URB_MSG_LEN > (*buf)->vb.size) - cmd = TM6000_URB_MSG_ERR; + cmd = TM6000_URB_MSG_ERR; + } + } else { + pos=0; + } /* Prints debug info */ dprintk(dev, V4L2_DEBUG_ISOC, "size=%d, num=%d, " " line=%d, field=%d\n", size, block, line, field); + if ((last_line!=line)&&(last_line+1!=line) && + (cmd != TM6000_URB_MSG_ERR) ) { + if (cmd != TM6000_URB_MSG_VIDEO) { + dprintk(dev, V4L2_DEBUG_ISOC, "cmd=%d, " + "size=%d, num=%d, line=%d, field=%d\n", + cmd, size, block, line, field); + } + if (start_line<0) + start_line=last_line; + /* Prints debug info */ + dprintk(dev, V4L2_DEBUG_ISOC, "lines= %d-%d, " + "field=%d\n", + start_line, last_line, field); + + if ((start_line<6 && last_line>200) && + (last_field != field) ) { + + dev->isoc_ctl.nfields++; + if (dev->isoc_ctl.nfields>=2) { + dev->isoc_ctl.nfields=0; + + /* Announces that a new buffer were filled */ + buffer_filled (dev, dma_q, *buf); + dprintk(dev, V4L2_DEBUG_ISOC, + "new buffer filled\n"); + rc=get_next_buf (dma_q, buf); + } + } + + start_line=line; + last_field=field; + } + last_line=line; pktsize = TM6000_URB_MSG_LEN; -///////////////////////////// -/// nao seria size??? - } else { /* Continue the last copy */ cmd = dev->isoc_ctl.cmd; @@ -244,16 +304,27 @@ static u8 *copy_packet (struct urb *urb, u32 header, u8 *data, u8 *endp, pktsize = dev->isoc_ctl.pktsize; } - cpysize=(endp-ptr>size)?size:endp-ptr; + cpysize=(endp-(*ptr)>size)?size:endp-(*ptr); if (cpysize) { /* handles each different URB message */ switch(cmd) { case TM6000_URB_MSG_VIDEO: /* Fills video buffer */ - if (__copy_to_user(&out_p[pos],ptr,cpysize)!=0) + if (__copy_to_user(&out_p[pos],*ptr,cpysize)!=0) tm6000_err("copy_to_user failed.\n"); - break; + + break; + case TM6000_URB_MSG_PTS: + break; + case TM6000_URB_MSG_AUDIO: +/* Need some code to process audio */ +printk ("%ld: cmd=%s, size=%d\n", jiffies, + tm6000_msg_type[cmd],size); + break; + default: + dprintk (dev, V4L2_DEBUG_ISOC, "cmd=%s, size=%d\n", + tm6000_msg_type[cmd],size); } } if (cpysize<size) { @@ -264,13 +335,13 @@ static u8 *copy_packet (struct urb *urb, u32 header, u8 *data, u8 *endp, dev->isoc_ctl.size= size-cpysize; dev->isoc_ctl.cmd = cmd; dev->isoc_ctl.pktsize = pktsize-cpysize; - ptr+=cpysize; + (*ptr)+=cpysize; } else { dev->isoc_ctl.cmd = 0; - ptr+=pktsize; + (*ptr)+=pktsize; } - return ptr; + return rc; } static int copy_streams(u8 *data, u8 *out_p, unsigned long len, @@ -328,10 +399,16 @@ static int copy_streams(u8 *data, u8 *out_p, unsigned long len, } HEADER: /* Copy or continue last copy */ - ptr=copy_packet(urb,header,ptr,endp,out_p,buf); + rc=copy_packet(urb,header,&ptr,endp,out_p,buf); + if (rc<0) { + buf=NULL; + printk(KERN_ERR "tm6000: buffer underrun at %ld\n", + jiffies); + return rc; + } } - return rc; + return 0; } /* * Identify the tm5600/6000 buffer header type and properly handles @@ -354,13 +431,11 @@ static int copy_multiplexed(u8 *ptr, u8 *out_p, unsigned long len, if (pos >= (*buf)->vb.size) { pos=0; /* Announces that a new buffer were filled */ - buffer_filled (dev, *buf); + buffer_filled (dev, dma_q, *buf); dprintk(dev, V4L2_DEBUG_ISOC, "new buffer filled\n"); - rc=get_next_buf (dma_q, buf); if (rc<=0) { *buf=NULL; - printk(KERN_ERR "tm6000: buffer underrun\n"); break; } } @@ -441,7 +516,7 @@ static inline int tm6000_isoc_copy(struct urb *urb, struct tm6000_buffer **buf) len=urb->iso_frame_desc[i].actual_length; - if (len>=TM6000_URB_MSG_LEN) { +// if (len>=TM6000_URB_MSG_LEN) { p=urb->transfer_buffer + urb->iso_frame_desc[i].offset; if (!urb->iso_frame_desc[i].status) { if (((*buf)->fmt->fourcc)==V4L2_PIX_FMT_TM6000) { @@ -449,20 +524,14 @@ static inline int tm6000_isoc_copy(struct urb *urb, struct tm6000_buffer **buf) if (rc<=0) return rc; } else { - rc=copy_streams(p,outp,len,urb,buf); + copy_streams(p,outp,len,urb,buf); } } copied += len; if (copied>=size) break; - } - } - - if (((*buf)->fmt->fourcc)!=V4L2_PIX_FMT_TM6000) { - buffer_filled (dev, *buf); - dprintk(dev, V4L2_DEBUG_ISOC, "new buffer filled\n"); +// } } - return rc; } @@ -483,13 +552,18 @@ static void tm6000_irq_callback(struct urb *urb) spin_lock_irqsave(&dev->slock,flags); - rc=get_next_buf (dma_q, &buf); - if (rc<=0) - goto ret; + buf=dev->isoc_ctl.buf; + + if (!buf) { + rc=get_next_buf (dma_q, &buf); + if (rc<=0) + goto ret; + } /* Copy data from URB */ rc=tm6000_isoc_copy(urb, &buf); + dev->isoc_ctl.buf=buf; ret: /* Reset urb buffers */ for (i = 0; i < urb->number_of_packets; i++) { @@ -504,13 +578,9 @@ ret: } if (rc>=0) { - if (!rc) { - dprintk(dev, V4L2_DEBUG_QUEUE, "No active queue to serve\n"); - del_timer(&dma_q->timeout); - } else { /* Data filled, reset watchdog */ mod_timer(&dma_q->timeout, jiffies+BUFFER_TIMEOUT); - } +// } } spin_unlock_irqrestore(&dev->slock,flags); } @@ -523,6 +593,8 @@ static void tm6000_uninit_isoc(struct tm6000_core *dev) struct urb *urb; int i; + dev->isoc_ctl.nfields=-1; + dev->isoc_ctl.buf=NULL; for (i = 0; i < dev->isoc_ctl.num_bufs; i++) { urb=dev->isoc_ctl.urb[i]; if (urb) { @@ -610,8 +682,9 @@ static int tm6000_prepare_isoc(struct tm6000_core *dev, 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, in int=%i\n", - sb_size, i, in_interrupt()); + " buffer %i%s\n", + sb_size, i, + in_interrupt()?" while in int":""); tm6000_uninit_isoc(dev); return -ENOMEM; } @@ -795,7 +868,7 @@ buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb, struct tm6000_fh *fh = vq->priv_data; struct tm6000_buffer *buf = container_of(vb,struct tm6000_buffer,vb); struct tm6000_core *dev = fh->dev; - int rc=0, urbsize, urb_init=0; + int rc=0, urbsize, urb_init=0, npackets=1; BUG_ON(NULL == fh->fmt); @@ -833,6 +906,9 @@ buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb, Vres x Vres x 2 bytes/pixel by frame */ urbsize=buf->vb.size; + /* Need also one PTS */ + urbsize+=180; + /* memory for audio Should be at least bitrate * 2 channels * 2 bytes / frame rate */ @@ -852,11 +928,17 @@ buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb, /* 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); + /* Avoids allocating big memory areas for URB */ + while ((urbsize*dev->max_isoc_in)/npackets>65535) { + npackets++; + } + urbsize/=(urbsize+npackets-1)/npackets; + + dprintk(dev, V4L2_DEBUG_QUEUE, "Allocating %dx%d packets" + " of %d bytes each to handle %lu size\n", + npackets,urbsize,dev->max_isoc_in,buf->vb.size); - dprintk(dev, V4L2_DEBUG_QUEUE, "Allocating %d packets to handle " - "%lu size\n", urbsize,buf->vb.size); - rc = tm6000_prepare_isoc(dev, urbsize, 2); + rc = tm6000_prepare_isoc(dev, urbsize, npackets); if (rc<0) goto fail; |