diff options
Diffstat (limited to 'drivers/media/platform/coda/coda.h')
| -rw-r--r-- | drivers/media/platform/coda/coda.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/media/platform/coda/coda.h b/drivers/media/platform/coda/coda.h index baa04b0f21fb..e35f505053d0 100644 --- a/drivers/media/platform/coda/coda.h +++ b/drivers/media/platform/coda/coda.h @@ -296,6 +296,18 @@ static inline unsigned int coda_get_bitstream_payload(struct coda_ctx *ctx) return kfifo_len(&ctx->bitstream_fifo); } +/* + * The bitstream prefetcher needs to read at least 2 256 byte periods past + * the desired bitstream position for all data to reach the decoder. + */ +static inline bool coda_bitstream_can_fetch_past(struct coda_ctx *ctx, + unsigned int pos) +{ + return (int)(ctx->bitstream_fifo.kfifo.in - ALIGN(pos, 256)) > 512; +} + +bool coda_bitstream_can_fetch_past(struct coda_ctx *ctx, unsigned int pos); + void coda_bit_stream_end_flag(struct coda_ctx *ctx); void coda_m2m_buf_done(struct coda_ctx *ctx, struct vb2_v4l2_buffer *buf, |