From: Ilja Friedel <i...@chromium.org>
Timestamp i of a previously decoded buffer was overwritten for some
H.264 streams with timestamp i+1 of the next buffer. This happened when
encountering frame_type S5P_FIMV_DECODE_FRAME_SKIPPED, indicating no
new frame.
In most cases this wrong indexing might not have been noticed except
for a one frame delay in frame presentation. For H.264 streams though
that require reordering of frames for presentation, it caused a slightly
erratic presentation time lookup and consequently dropped frames in the
Pepper Flash plugin.
Signed-off-by: Ilja H. Friedel <i...@google.com>
Signed-off-by: Kiran AVND <avnd.ki...@samsung.com>
---
drivers/media/platform/s5p-mfc/s5p_mfc.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc.c
b/drivers/media/platform/s5p-mfc/s5p_mfc.c
index e876839..3fc2f8a 100644
--- a/drivers/media/platform/s5p-mfc/s5p_mfc.c
+++ b/drivers/media/platform/s5p-mfc/s5p_mfc.c
@@ -220,11 +220,14 @@ static void s5p_mfc_handle_frame_copy_time(struct
s5p_mfc_ctx *ctx)
size_t dec_y_addr;
unsigned int frame_type;
- dec_y_addr = s5p_mfc_hw_call(dev->mfc_ops, get_dec_y_adr, dev);
+ /* Make sure we actually have a new frame before continuing. */
frame_type = s5p_mfc_hw_call(dev->mfc_ops, get_dec_frame_type, dev);
+ if (frame_type == S5P_FIMV_DECODE_FRAME_SKIPPED)
+ return;
+ dec_y_addr = s5p_mfc_hw_call(dev->mfc_ops, get_dec_y_adr, dev);
/* Copy timestamp / timecode from decoded src to dst and set
- appropriate flags */
+ appropriate flags. */
src_buf = list_entry(ctx->src_queue.next, struct s5p_mfc_buf, list);
list_for_each_entry(dst_buf, &ctx->dst_queue, list) {
if (vb2_dma_contig_plane_dma_addr(dst_buf->b, 0) == dec_y_addr)
{
@@ -250,6 +253,11 @@ static void s5p_mfc_handle_frame_copy_time(struct
s5p_mfc_ctx *ctx)
dst_buf->b->v4l2_buf.flags |=
V4L2_BUF_FLAG_BFRAME;
break;
+ default:
+ /* Don't know how to handle
+ S5P_FIMV_DECODE_FRAME_OTHER_FRAME. */
+ mfc_debug(2, "Unexpected frame type: %d\n",
+ frame_type);
}
break;
}
--
1.7.9.5
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