At the V4L2 codec API session during ELC-E 2014, we agreed that for the decoder draining flow, after a V4L2_DEC_CMD_STOP decoder command was issued, the last decoded buffer should get dequeued with a V4L2_BUF_FLAG_LAST set. After that, poll should immediately return and all following VIDIOC_DQBUF should return -EPIPE until the stream is stopped or decoding continued via V4L2_DEC_CMD_START. (or STREAMOFF/STREAMON). Changes since v3: - Moved documentation changes into patches 1 and 2 and added a comment about DQBUF returning -EPIPE to the encoder/decoder stop command documentation. regards Philipp Peter Seiderer (1): [media] videodev2: Add V4L2_BUF_FLAG_LAST Philipp Zabel (3): [media] videobuf2: return -EPIPE from DQBUF after the last buffer [media] coda: Set last buffer flag and fix EOS event [media] s5p-mfc: Set last buffer flag Documentation/DocBook/media/v4l/io.xml | 10 ++++++++ .../DocBook/media/v4l/vidioc-decoder-cmd.xml | 8 ++++++- .../DocBook/media/v4l/vidioc-encoder-cmd.xml | 7 +++++- Documentation/DocBook/media/v4l/vidioc-qbuf.xml | 8 +++++++ drivers/media/platform/coda/coda-bit.c | 4 ++-- drivers/media/platform/coda/coda-common.c | 27 +++++++++------------- drivers/media/platform/coda/coda.h | 3 +++ drivers/media/platform/s5p-mfc/s5p_mfc.c | 1 + drivers/media/v4l2-core/v4l2-mem2mem.c | 10 +++++++- drivers/media/v4l2-core/videobuf2-core.c | 18 ++++++++++++++- include/media/videobuf2-core.h | 10 ++++++++ include/trace/events/v4l2.h | 3 ++- include/uapi/linux/videodev2.h | 2 ++ 13 files changed, 88 insertions(+), 23 deletions(-) -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
