diff options
| -rw-r--r-- | drivers/media/video/ivtv/ivtv-driver.c | 8 | ||||
| -rw-r--r-- | drivers/media/video/ivtv/ivtv-driver.h | 2 | ||||
| -rw-r--r-- | drivers/media/video/ivtv/ivtv-fileops.c | 31 | ||||
| -rw-r--r-- | drivers/media/video/ivtv/ivtv-irq.c | 25 |
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 04179b7..48db22c 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 49ce14d..b6dd236 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 a200a8a..58ad0d9 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 fd1688e4..bcf1c85 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 */ |