diff options
Diffstat (limited to 'drivers/media/platform/vimc/vimc-streamer.c')
| -rw-r--r-- | drivers/media/platform/vimc/vimc-streamer.c | 26 |
1 files changed, 22 insertions, 4 deletions
diff --git a/drivers/media/platform/vimc/vimc-streamer.c b/drivers/media/platform/vimc/vimc-streamer.c index 26b674259489..3b3f36357a0e 100644 --- a/drivers/media/platform/vimc/vimc-streamer.c +++ b/drivers/media/platform/vimc/vimc-streamer.c @@ -122,6 +122,14 @@ static int vimc_streamer_pipeline_init(struct vimc_stream *stream, return -EINVAL; } +/* + * vimc_streamer_thread - process frames through the pipeline + * + * @data: vimc_stream struct of the current stream + * + * From the source to the sink, gets a frame from each subdevice and send to + * the next one of the pipeline at a fixed framerate. + */ static int vimc_streamer_thread(void *data) { struct vimc_stream *stream = data; @@ -149,6 +157,20 @@ static int vimc_streamer_thread(void *data) return 0; } +/* + * vimc_streamer_s_stream - start/stop the streaming on the media pipeline + * + * @stream: the pointer to the stream structure of the current stream + * @ved: pointer to the vimc entity of the entity of the stream + * @enable: flag to determine if stream should start/stop + * + * When starting, check if there is no stream->kthread allocated. This should + * indicate that a stream is already running. Then, it initializes + * the pipeline, creates and runs a kthread to consume buffers through the + * pipeline. + * When stopping, analogously check if there is a stream running, stop + * the thread and terminates the pipeline. + */ int vimc_streamer_s_stream(struct vimc_stream *stream, struct vimc_ent_device *ved, int enable) @@ -188,7 +210,3 @@ int vimc_streamer_s_stream(struct vimc_stream *stream, return 0; } EXPORT_SYMBOL_GPL(vimc_streamer_s_stream); - -MODULE_DESCRIPTION("Virtual Media Controller Driver (VIMC) Streamer"); -MODULE_AUTHOR("Lucas A. M. Magalhães <lucmaga@gmail.com>"); -MODULE_LICENSE("GPL"); |