On 1/26/19 2:47 PM, Dafna Hirschfeld wrote:
> Add stateless decoder instance field to the dev struct and
> register another node for the statelsess decoder.
> The stateless API for the node will be implemented in further patches.
>
> Signed-off-by: Dafna Hirschfeld <daf...@gmail.com>
> ---
> drivers/media/platform/vicodec/vicodec-core.c | 56 +++++++++++++++++--
> 1 file changed, 51 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/media/platform/vicodec/vicodec-core.c
> b/drivers/media/platform/vicodec/vicodec-core.c
> index 25831d992681..7c2ad7d5f356 100644
> --- a/drivers/media/platform/vicodec/vicodec-core.c
> +++ b/drivers/media/platform/vicodec/vicodec-core.c
> @@ -104,6 +104,7 @@ struct vicodec_dev {
> struct v4l2_device v4l2_dev;
> struct vicodec_dev_instance enc_instance;
> struct vicodec_dev_instance dec_instance;
> + struct vicodec_dev_instance stateless_dec_instance;
> #ifdef CONFIG_MEDIA_CONTROLLER
> struct media_device mdev;
> #endif
> @@ -114,6 +115,7 @@ struct vicodec_ctx {
> struct v4l2_fh fh;
> struct vicodec_dev *dev;
> bool is_enc;
> + bool is_stateless_dec;
I'd just call this 'is_stateless', since the same will be needed for the
future stateless encoder.
> spinlock_t *lock;
>
> struct v4l2_ctrl_handler hdl;
> @@ -314,6 +316,9 @@ static void device_run(void *priv)
>
> if (ctx->is_enc)
> v4l2_m2m_job_finish(dev->enc_instance.m2m_dev, ctx->fh.m2m_ctx);
> + else if (ctx->is_stateless_dec)
> + v4l2_m2m_job_finish(dev->stateless_dec_instance.m2m_dev,
> + ctx->fh.m2m_ctx);
> else
> v4l2_m2m_job_finish(dev->dec_instance.m2m_dev, ctx->fh.m2m_ctx);
> }
> @@ -1444,8 +1449,13 @@ static int queue_init(void *priv, struct vb2_queue
> *src_vq,
> src_vq->ops = &vicodec_qops;
> src_vq->mem_ops = &vb2_vmalloc_memops;
> src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
> - src_vq->lock = ctx->is_enc ? &ctx->dev->enc_instance.mutex :
> - &ctx->dev->dec_instance.mutex;
> + if (ctx->is_enc)
> + src_vq->lock = &ctx->dev->enc_instance.mutex;
> + else if (ctx->is_stateless_dec)
> + src_vq->lock = &ctx->dev->stateless_dec_instance.mutex;
> + else
> + src_vq->lock = &ctx->dev->dec_instance.mutex;
> + src_vq->supports_requests = ctx->is_stateless_dec ? true : false;
> ret = vb2_queue_init(src_vq);
> if (ret)
> return ret;
> @@ -1543,6 +1553,8 @@ static int vicodec_open(struct file *file)
>
> if (vfd == &dev->enc_instance.vfd)
> ctx->is_enc = true;
> + else if (vfd == &dev->stateless_dec_instance.vfd)
> + ctx->is_stateless_dec = true;
>
> v4l2_fh_init(&ctx->fh, video_devdata(file));
> file->private_data = &ctx->fh;
> @@ -1553,6 +1565,7 @@ static int vicodec_open(struct file *file)
> 1, 16, 1, 10);
> v4l2_ctrl_new_custom(hdl, &vicodec_ctrl_i_frame, NULL);
> v4l2_ctrl_new_custom(hdl, &vicodec_ctrl_p_frame, NULL);
> + v4l2_ctrl_new_custom(hdl, &vicodec_ctrl_stateless_state, NULL);
This should only be added if this is the stateless decoder.
> if (hdl->error) {
> rc = hdl->error;
> v4l2_ctrl_handler_free(hdl);
> @@ -1592,6 +1605,10 @@ static int vicodec_open(struct file *file)
> ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->enc_instance.m2m_dev,
> ctx, &queue_init);
> ctx->lock = &dev->enc_instance.lock;
> + } else if (ctx->is_stateless_dec) {
> + ctx->fh.m2m_ctx =
> v4l2_m2m_ctx_init(dev->stateless_dec_instance.m2m_dev,
> + ctx, &queue_init);
> + ctx->lock = &dev->stateless_dec_instance.lock;
> } else {
> ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->dec_instance.m2m_dev,
> ctx, &queue_init);
> @@ -1697,6 +1714,7 @@ static int vicodec_probe(struct platform_device *pdev)
>
> spin_lock_init(&dev->enc_instance.lock);
> spin_lock_init(&dev->dec_instance.lock);
> + spin_lock_init(&dev->stateless_dec_instance.lock);
>
> ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
> if (ret)
> @@ -1711,6 +1729,7 @@ static int vicodec_probe(struct platform_device *pdev)
>
> mutex_init(&dev->enc_instance.mutex);
> mutex_init(&dev->dec_instance.mutex);
> + mutex_init(&dev->stateless_dec_instance.mutex);
Why not init the mutex and the spinlock in register_instance()?
The same for v4l2_m2m_ctx_init().
Regards,
Hans
>
> platform_set_drvdata(pdev, dev);
>
> @@ -1728,14 +1747,25 @@ static int vicodec_probe(struct platform_device *pdev)
> goto err_enc_m2m;
> }
>
> + dev->stateless_dec_instance.m2m_dev = v4l2_m2m_init(&m2m_ops);
> + if (IS_ERR(dev->stateless_dec_instance.m2m_dev)) {
> + v4l2_err(&dev->v4l2_dev, "Failed to init vicodec stateless dec
> device\n");
> + ret = PTR_ERR(dev->stateless_dec_instance.m2m_dev);
> + goto err_dec_m2m;
> + }
> +
> if (register_instance(dev, &dev->enc_instance,
> "videdev-enc", true))
> - goto err_dec_m2m;
> + goto err_sdec_m2m;
>
> if (register_instance(dev, &dev->dec_instance,
> "videdev-statefull-dec", false))
> goto unreg_enc;
>
> + if (register_instance(dev, &dev->stateless_dec_instance,
> + "videdev-stateless-dec", false))
> + goto unreg_dec;
> +
> #ifdef CONFIG_MEDIA_CONTROLLER
> ret = v4l2_m2m_register_media_controller(dev->enc_instance.m2m_dev,
> &dev->enc_instance.vfd,
> @@ -1753,24 +1783,38 @@ static int vicodec_probe(struct platform_device *pdev)
> goto unreg_m2m_enc_mc;
> }
>
> + ret =
> v4l2_m2m_register_media_controller(dev->stateless_dec_instance.m2m_dev,
> +
> &dev->stateless_dec_instance.vfd,
> +
> MEDIA_ENT_F_PROC_VIDEO_DECODER);
> + if (ret) {
> + v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem media
> controller for stateless dec\n");
> + goto unreg_m2m_dec_mc;
> + }
> +
> ret = media_device_register(&dev->mdev);
> if (ret) {
> v4l2_err(&dev->v4l2_dev, "Failed to register mem2mem media
> device\n");
> - goto unreg_m2m_dec_mc;
> + goto unreg_m2m_sdec_mc;
> }
> #endif
> return 0;
>
> #ifdef CONFIG_MEDIA_CONTROLLER
> +unreg_m2m_sdec_mc:
> +
> v4l2_m2m_unregister_media_controller(dev->stateless_dec_instance.m2m_dev);
> unreg_m2m_dec_mc:
> v4l2_m2m_unregister_media_controller(dev->dec_instance.m2m_dev);
> unreg_m2m_enc_mc:
> v4l2_m2m_unregister_media_controller(dev->enc_instance.m2m_dev);
> unreg_m2m:
> - video_unregister_device(&dev->dec_instance.vfd);
> + video_unregister_device(&dev->stateless_dec_instance.vfd);
> #endif
> +unreg_dec:
> + video_unregister_device(&dev->dec_instance.vfd);
> unreg_enc:
> video_unregister_device(&dev->enc_instance.vfd);
> +err_sdec_m2m:
> + v4l2_m2m_release(dev->stateless_dec_instance.m2m_dev);
> err_dec_m2m:
> v4l2_m2m_release(dev->dec_instance.m2m_dev);
> err_enc_m2m:
> @@ -1791,6 +1835,7 @@ static int vicodec_remove(struct platform_device *pdev)
> media_device_unregister(&dev->mdev);
> v4l2_m2m_unregister_media_controller(dev->enc_instance.m2m_dev);
> v4l2_m2m_unregister_media_controller(dev->dec_instance.m2m_dev);
> +
> v4l2_m2m_unregister_media_controller(dev->stateless_dec_instance.m2m_dev);
> media_device_cleanup(&dev->mdev);
> #endif
>
> @@ -1798,6 +1843,7 @@ static int vicodec_remove(struct platform_device *pdev)
> v4l2_m2m_release(dev->dec_instance.m2m_dev);
> video_unregister_device(&dev->enc_instance.vfd);
> video_unregister_device(&dev->dec_instance.vfd);
> + video_unregister_device(&dev->stateless_dec_instance.vfd);
> v4l2_device_unregister(&dev->v4l2_dev);
>
> return 0;
>
