aboutsummaryrefslogtreecommitdiff
path: root/drivers
diff options
context:
space:
mode:
Diffstat (limited to 'drivers')
-rw-r--r--drivers/media/video/ivtv/ivtv-driver.c8
-rw-r--r--drivers/media/video/ivtv/ivtv-driver.h2
-rw-r--r--drivers/media/video/ivtv/ivtv-fileops.c31
-rw-r--r--drivers/media/video/ivtv/ivtv-irq.c25
4 files changed, 50 insertions, 16 deletions
diff --git a/drivers/media/video/ivtv/ivtv-driver.c b/drivers/media/video/ivtv/ivtv-driver.c
index 04179b7d1af..48db22cc1bd 100644
--- a/drivers/media/video/ivtv/ivtv-driver.c
+++ b/drivers/media/video/ivtv/ivtv-driver.c
@@ -970,7 +970,6 @@ static int __devinit ivtv_probe(struct pci_dev *dev,
const struct pci_device_id *pci_id)
{
int retval = 0;
- int yuv_buf_size;
int vbi_buf_size;
struct ivtv *itv;
@@ -1122,11 +1121,8 @@ static int __devinit ivtv_probe(struct pci_dev *dev,
itv->stream_buf_size[IVTV_ENC_STREAM_TYPE_MPG] = 0x08000;
itv->stream_buf_size[IVTV_ENC_STREAM_TYPE_PCM] = 0x01200;
itv->stream_buf_size[IVTV_DEC_STREAM_TYPE_MPG] = 0x10000;
-
- /* 0x15180 == 720 * 480 / 4, 0x19500 == 720 * 576 / 4 */
- yuv_buf_size = itv->is_60hz ? 0x15180 : 0x19500;
- itv->stream_buf_size[IVTV_DEC_STREAM_TYPE_YUV] = yuv_buf_size / 2;
- itv->stream_buf_size[IVTV_ENC_STREAM_TYPE_YUV] = yuv_buf_size / 8;
+ itv->stream_buf_size[IVTV_DEC_STREAM_TYPE_YUV] = 0x10000;
+ itv->stream_buf_size[IVTV_ENC_STREAM_TYPE_YUV] = 0x08000;
/* Setup VBI Raw Size. Should be big enough to hold PAL.
It is possible to switch between PAL and NTSC, so we need to
diff --git a/drivers/media/video/ivtv/ivtv-driver.h b/drivers/media/video/ivtv/ivtv-driver.h
index 49ce14d14a5..b6dd2360e61 100644
--- a/drivers/media/video/ivtv/ivtv-driver.h
+++ b/drivers/media/video/ivtv/ivtv-driver.h
@@ -485,6 +485,8 @@ struct yuv_playback_info
void *blanking_ptr;
dma_addr_t blanking_dmaptr;
+
+ int stream_size;
};
#define IVTV_VBI_FRAMES 32
diff --git a/drivers/media/video/ivtv/ivtv-fileops.c b/drivers/media/video/ivtv/ivtv-fileops.c
index a200a8a95a2..58ad0d9c680 100644
--- a/drivers/media/video/ivtv/ivtv-fileops.c
+++ b/drivers/media/video/ivtv/ivtv-fileops.c
@@ -542,6 +542,7 @@ ssize_t ivtv_v4l2_write(struct file *filp, const char __user *user_buf, size_t c
struct ivtv_open_id *id = filp->private_data;
struct ivtv *itv = id->itv;
struct ivtv_stream *s = &itv->streams[id->type];
+ struct yuv_playback_info *yi = &itv->yuv_info;
struct ivtv_buffer *buf;
struct ivtv_queue q;
int bytes_written = 0;
@@ -604,9 +605,16 @@ retry:
/* copy user data into buffers */
while ((buf = ivtv_dequeue(s, &q))) {
- /* Make sure we really got all the user data */
- rc = ivtv_buf_copy_from_user(s, buf, user_buf, count);
+ /* yuv is a pain. Don't copy more data than needed for a single
+ frame, otherwise we lose sync with the incoming stream */
+ if (s->type == IVTV_DEC_STREAM_TYPE_YUV &&
+ yi->stream_size + count > itv->dma_data_req_size)
+ rc = ivtv_buf_copy_from_user(s, buf, user_buf,
+ itv->dma_data_req_size - yi->stream_size);
+ else
+ rc = ivtv_buf_copy_from_user(s, buf, user_buf, count);
+ /* Make sure we really got all the user data */
if (rc < 0) {
ivtv_queue_move(s, &q, NULL, &s->q_free, 0);
return rc;
@@ -615,6 +623,16 @@ retry:
count -= rc;
bytes_written += rc;
+ if (s->type == IVTV_DEC_STREAM_TYPE_YUV) {
+ yi->stream_size += rc;
+ /* If we have a complete yuv frame, break loop now */
+ if (yi->stream_size == itv->dma_data_req_size) {
+ ivtv_enqueue(s, buf, &s->q_full);
+ yi->stream_size = 0;
+ break;
+ }
+ }
+
if (buf->bytesused != s->buf_size) {
/* incomplete, leave in q_io for next time */
ivtv_enqueue(s, buf, &s->q_io);
@@ -922,10 +940,15 @@ static int ivtv_serialized_open(struct ivtv_stream *s, struct file *filp)
}
/* YUV or MPG Decoding Mode? */
- if (s->type == IVTV_DEC_STREAM_TYPE_MPG)
+ if (s->type == IVTV_DEC_STREAM_TYPE_MPG) {
clear_bit(IVTV_F_I_DEC_YUV, &itv->i_flags);
- else if (s->type == IVTV_DEC_STREAM_TYPE_YUV)
+ } else if (s->type == IVTV_DEC_STREAM_TYPE_YUV) {
set_bit(IVTV_F_I_DEC_YUV, &itv->i_flags);
+ /* For yuv, we need to know the dma size before we start */
+ itv->dma_data_req_size =
+ itv->params.width * itv->params.height * 3 / 2;
+ itv->yuv_info.stream_size = 0;
+ }
return 0;
}
diff --git a/drivers/media/video/ivtv/ivtv-irq.c b/drivers/media/video/ivtv/ivtv-irq.c
index fd1688e4757..bcf1c85991a 100644
--- a/drivers/media/video/ivtv/ivtv-irq.c
+++ b/drivers/media/video/ivtv/ivtv-irq.c
@@ -313,15 +313,28 @@ void ivtv_dma_stream_dec_prepare(struct ivtv_stream *s, u32 offset, int lock)
IVTV_DEBUG_HI_DMA("DEC PREPARE DMA %s: %08x %08x\n", s->name, s->q_predma.bytesused, offset);
list_for_each_entry(buf, &s->q_predma.list, list) {
/* YUV UV Offset from Y Buffer */
- if (s->type == IVTV_DEC_STREAM_TYPE_YUV && !y_done && bytes_written >= y_size) {
+ if (s->type == IVTV_DEC_STREAM_TYPE_YUV && !y_done &&
+ (bytes_written + buf->bytesused) >= y_size) {
+ s->sg_pending[idx].src = buf->dma_handle;
+ s->sg_pending[idx].dst = offset;
+ s->sg_pending[idx].size = y_size - bytes_written;
offset = uv_offset;
+ if (s->sg_pending[idx].size != buf->bytesused) {
+ idx++;
+ s->sg_pending[idx].src =
+ buf->dma_handle + s->sg_pending[idx - 1].size;
+ s->sg_pending[idx].dst = offset;
+ s->sg_pending[idx].size =
+ buf->bytesused - s->sg_pending[idx - 1].size;
+ offset += s->sg_pending[idx].size;
+ }
y_done = 1;
+ } else {
+ s->sg_pending[idx].src = buf->dma_handle;
+ s->sg_pending[idx].dst = offset;
+ s->sg_pending[idx].size = buf->bytesused;
+ offset += buf->bytesused;
}
- s->sg_pending[idx].src = buf->dma_handle;
- s->sg_pending[idx].dst = offset;
- s->sg_pending[idx].size = buf->bytesused;
-
- offset += buf->bytesused;
bytes_written += buf->bytesused;
/* Sync SG buffers */