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Subject: media: coda: fix mpeg2 sequence number handling Author: Philipp Zabel <[email protected]> Date: Tue Jun 18 12:45:10 2019 -0400 Sequence number handling assumed that the BIT processor frame number starts counting at 1, but this is not true for the MPEG-2 decoder, which starts at 0. Fix the sequence counter offset detection to handle this. Signed-off-by: Philipp Zabel <[email protected]> Signed-off-by: Hans Verkuil <[email protected]> Signed-off-by: Mauro Carvalho Chehab <[email protected]> drivers/media/platform/coda/coda-bit.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) --- diff --git a/drivers/media/platform/coda/coda-bit.c b/drivers/media/platform/coda/coda-bit.c index 06a352659bae..45ffe2e87e0a 100644 --- a/drivers/media/platform/coda/coda-bit.c +++ b/drivers/media/platform/coda/coda-bit.c @@ -1746,6 +1746,7 @@ static int __coda_start_decoding(struct coda_ctx *ctx) v4l2_err(&dev->v4l2_dev, "CODA_COMMAND_SEQ_INIT timeout\n"); return ret; } + ctx->sequence_offset = ~0U; ctx->initialized = 1; /* Update kfifo out pointer from coda bitstream read pointer */ @@ -2169,7 +2170,9 @@ static void coda_finish_decode(struct coda_ctx *ctx) v4l2_err(&dev->v4l2_dev, "decoded frame index out of range: %d\n", decoded_idx); } else { - val = coda_read(dev, CODA_RET_DEC_PIC_FRAME_NUM) - 1; + val = coda_read(dev, CODA_RET_DEC_PIC_FRAME_NUM); + if (ctx->sequence_offset == -1) + ctx->sequence_offset = val; val -= ctx->sequence_offset; spin_lock(&ctx->buffer_meta_lock); if (!list_empty(&ctx->buffer_meta_list)) { _______________________________________________ linuxtv-commits mailing list [email protected] https://www.linuxtv.org/cgi-bin/mailman/listinfo/linuxtv-commits
