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[media] coda: add sequence counter offset

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The coda h.264 decoder also counts PIC_RUNs where no frame was decoded but
a frame was rotated out / marked as ready to be displayed. This causes an
offset between the incoming encoded frame's sequence number and the decode
sequence number returned by the coda. This patch introduces a sequence
counter offset variable to keep track of the difference.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Philipp Zabel 2014-07-11 06:36:33 -03:00 committed by Mauro Carvalho Chehab
parent 410e5e4938
commit cb2c02821c
1 changed files with 9 additions and 4 deletions
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13
drivers/media/platform/coda.c
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@ -222,6 +222,7 @@ struct coda_ctx {
u32 isequence;
u32 qsequence;
u32 osequence;
u32 sequence_offset;
struct coda_q_data q_data[2];
enum coda_inst_type inst_type;
struct coda_codec *codec;
@ -2621,6 +2622,7 @@ static void coda_stop_streaming(struct vb2_queue *q)
ctx->streamon_cap = 0;
ctx->osequence = 0;
ctx->sequence_offset = 0;
}
if (!ctx->streamon_out && !ctx->streamon_cap) {
@ -3126,7 +3128,9 @@ static void coda_finish_decode(struct coda_ctx *ctx)
if (decoded_idx == -1) {
/* no frame was decoded, but we might have a display frame */
if (display_idx < 0 && ctx->display_idx < 0)
if (display_idx >= 0 && display_idx < ctx->num_internal_frames)
ctx->sequence_offset++;
else if (ctx->display_idx < 0)
ctx->prescan_failed = true;
} else if (decoded_idx == -2) {
/* no frame was decoded, we still return the remaining buffers */
@ -3138,10 +3142,11 @@ static void coda_finish_decode(struct coda_ctx *ctx)
struct coda_timestamp, list);
list_del(&ts->list);
val = coda_read(dev, CODA_RET_DEC_PIC_FRAME_NUM) - 1;
if (val != ts->sequence) {
val -= ctx->sequence_offset;
if (val != (ts->sequence & 0xffff)) {
v4l2_err(&dev->v4l2_dev,
"sequence number mismatch (%d != %d)\n",
val, ts->sequence);
"sequence number mismatch (%d(%d) != %d)\n",
val, ctx->sequence_offset, ts->sequence);
}
ctx->frame_timestamps[decoded_idx] = *ts;
kfree(ts);