From cb2c02821c44522f7284fcd57a7f11e11657255b Mon Sep 17 00:00:00 2001 From: Philipp Zabel Date: Fri, 11 Jul 2014 06:36:33 -0300 Subject: [PATCH] [media] coda: add sequence counter offset 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 Signed-off-by: Kamil Debski Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/coda.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/drivers/media/platform/coda.c b/drivers/media/platform/coda.c index d4e700391bba..d20343b32eed 100644 --- a/drivers/media/platform/coda.c +++ b/drivers/media/platform/coda.c @@ -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); -- 2.39.5