On 18/11/16 12:25, Hugues Fruchet wrote:
This V4L2 driver enables DELTA multi-format video decoder
of STMicroelectronics STiH4xx SoC series.
Signed-off-by: Hugues Fruchet <hugues.fruchet@xxxxxx>
---
drivers/media/platform/Kconfig | 20 +
drivers/media/platform/Makefile | 2 +
drivers/media/platform/sti/delta/Makefile | 2 +
drivers/media/platform/sti/delta/delta-cfg.h | 60 +
drivers/media/platform/sti/delta/delta-v4l2.c | 1813 +++++++++++++++++++++++++
drivers/media/platform/sti/delta/delta.h | 514 +++++++
6 files changed, 2411 insertions(+)
create mode 100644 drivers/media/platform/sti/delta/Makefile
create mode 100644 drivers/media/platform/sti/delta/delta-cfg.h
create mode 100644 drivers/media/platform/sti/delta/delta-v4l2.c
create mode 100644 drivers/media/platform/sti/delta/delta.h
<snip>
+static int delta_s_selection(struct file *file, void *fh,
+ struct v4l2_selection *s)
+{
+ if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+
+ /* reject attempts to write read only targets */
+ if ((s->target == V4L2_SEL_TGT_COMPOSE_DEFAULT) ||
+ (s->target == V4L2_SEL_TGT_COMPOSE_BOUNDS) ||
+ (s->target == V4L2_SEL_TGT_COMPOSE_PADDED))
+ return -EINVAL;
+
+ /* decoder don't support crop/compose request from user,
+ * just return silently what we can currently do
+ */
+ return delta_g_selection(file, fh, s);
+}
Huh? If you don't support s_selection, then just drop it.
<snip>
+static int delta_vb2_au_start_streaming(struct vb2_queue *q,
+ unsigned int count)
+{
+ struct delta_ctx *ctx = vb2_get_drv_priv(q);
+ struct delta_dev *delta = ctx->dev;
+ const struct delta_dec *dec = ctx->dec;
+ struct delta_au *au;
+ int ret = 0;
+ struct vb2_v4l2_buffer *vbuf = NULL;
+ struct delta_streaminfo *streaminfo = &ctx->streaminfo;
+ struct delta_frameinfo *frameinfo = &ctx->frameinfo;
+
+ if ((ctx->state != DELTA_STATE_WF_FORMAT) &&
+ (ctx->state != DELTA_STATE_WF_STREAMINFO))
+ return 0;
+
+ if (ctx->state == DELTA_STATE_WF_FORMAT) {
+ /* open decoder if not yet done */
+ ret = delta_open_decoder(ctx,
+ ctx->streaminfo.streamformat,
+ ctx->frameinfo.pixelformat, &dec);
+ if (ret)
+ return ret;
This should be 'goto err;'. I mentioned this in the original review as
well, but
apparently you forgot to fix it.
+ ctx->dec = dec;
+ ctx->state = DELTA_STATE_WF_STREAMINFO;
+ }
+
+ /* first buffer should contain stream header,
+ * decode it to get the infos related to stream
+ * such as width, height, dpb, ...
+ */
+ vbuf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
+ if (!vbuf) {
+ dev_err(delta->dev, "%s failed to start streaming, no stream header buffer enqueued\n",
+ ctx->name);
+ ret = -EINVAL;
+ goto err;
+ }
+ au = to_au(vbuf);
+ au->size = vb2_get_plane_payload(&vbuf->vb2_buf, 0);
+ au->dts = vbuf->vb2_buf.timestamp;
+
+ delta_push_dts(ctx, au->dts);
+
+ /* dump access unit */
+ dump_au(ctx, au);
+
+ /* decode this access unit */
+ ret = call_dec_op(dec, decode, ctx, au);
+ if (ret) {
+ dev_err(delta->dev, "%s failed to start streaming, header decoding failed (%d)\n",
+ ctx->name, ret);
+ goto err;
+ }
+
+ ret = call_dec_op(dec, get_streaminfo, ctx, streaminfo);
+ if (ret) {
+ dev_dbg_ratelimited(delta->dev,
+ "%s failed to start streaming, valid stream header not yet decoded\n",
+ ctx->name);
+ goto err;
+ }
+ ctx->flags |= DELTA_FLAG_STREAMINFO;
+
+ ret = call_dec_op(dec, get_frameinfo, ctx, frameinfo);
+ if (ret)
+ goto err;
+ ctx->flags |= DELTA_FLAG_FRAMEINFO;
+
+ ctx->state = DELTA_STATE_READY;
+
+ delta_au_done(ctx, au, ret);
+ return 0;
+
+err:
+ /* return all buffers to vb2 in QUEUED state.
+ * This will give ownership back to userspace
+ */
+ if (vbuf)
+ v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_QUEUED);
+
+ while ((vbuf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx)))
+ v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_QUEUED);
+ return ret;
+}
<snip>
+static int queue_init(void *priv,
+ struct vb2_queue *src_vq, struct vb2_queue *dst_vq)
+{
+ struct vb2_queue *q;
+ struct delta_ctx *ctx = priv;
+ struct delta_dev *delta = ctx->dev;
+ int ret;
+
+ /* setup vb2 queue for stream input */
+ q = src_vq;
+ q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
+ q->io_modes = VB2_MMAP | VB2_DMABUF;
+ q->drv_priv = ctx;
+ /* overload vb2 buf with private au struct */
+ q->buf_struct_size = sizeof(struct delta_au);
+ q->ops = &delta_vb2_au_ops;
+ q->mem_ops = &vb2_dma_contig_memops;
+ q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
+ q->lock = &delta->lock;
q->dev is still not set. It is not clear to me why this apparently works
for you.
It should fail when q->dev is NULL.
+ ret = vb2_queue_init(q);
+ if (ret)
+ return ret;
+
+ /* setup vb2 queue for frame output */
+ q = dst_vq;
+ q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ q->io_modes = VB2_MMAP | VB2_DMABUF;
+ q->drv_priv = ctx;
+ /* overload vb2 buf with private frame struct */
+ q->buf_struct_size = sizeof(struct delta_frame)
+ + DELTA_MAX_FRAME_PRIV_SIZE;
+ q->ops = &delta_vb2_frame_ops;
+ q->mem_ops = &vb2_dma_contig_memops;
+ q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
+ q->lock = &delta->lock;
Ditto.
+
+ return vb2_queue_init(q);
+}
Regards,
Hans
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