[media] coda: copy headers in front of every I-frame

That way we don't have to rely on userspace to inject the headers on IDR
requests, and there is always enough information to start decoding at an
I-frame.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

diff --git a/drivers/media/platform/coda/coda-bit.c b/drivers/media/platform/coda/coda-bit.c
index 22e4630..2ec4137 100644 (file)
--- a/drivers/media/platform/coda/coda-bit.c
+++ b/drivers/media/platform/coda/coda-bit.c
@@ -1270,10 +1270,10 @@ static int coda_prepare_encode(struct coda_ctx *ctx)
                coda_set_gdi_regs(ctx);
 
        /*
-        * Copy headers at the beginning of the first frame for H.264 only.
-        * In MPEG4 they are already copied by the coda.
+        * Copy headers in front of the first frame and forced I frames for
+        * H.264 only. In MPEG4 they are already copied by the CODA.
         */
-       if (src_buf->sequence == 0) {
+       if (src_buf->sequence == 0 || force_ipicture) {
                pic_stream_buffer_addr =
                        vb2_dma_contig_plane_dma_addr(&dst_buf->vb2_buf, 0) +
                        ctx->vpu_header_size[0] +
@@ -1386,7 +1386,8 @@ static void coda_finish_encode(struct coda_ctx *ctx)
        wr_ptr = coda_read(dev, CODA_REG_BIT_WR_PTR(ctx->reg_idx));
 
        /* Calculate bytesused field */
-       if (dst_buf->sequence == 0) {
+       if (dst_buf->sequence == 0 ||
+           src_buf->flags & V4L2_BUF_FLAG_KEYFRAME) {
                vb2_set_plane_payload(&dst_buf->vb2_buf, 0, wr_ptr - start_ptr +
                                        ctx->vpu_header_size[0] +
                                        ctx->vpu_header_size[1] +