I am using v4l2 m2m framework to develop a resize driver. I have an image , pass it to the driver and it generated a resize output image. My v4l2 sequence is 1. qbuf OUTPUT, CAPTURE 2. stream on OUTPUT, CAPTURE 3. dqbuf OUTPUT, CAPTURE 4. stream off OUTPUT, CAPTURE this works if i have a full frame of image before i start streaming. But what I only have partial buffers when I start streaming, how can I qbuf more buffer after I 'stream on' OUTPUT, I try this, but this fail 1. qbuf OUTPUT, CAPTURE (I qbuf only partial OUTPUT) 2. stream on OUTPUT, CAPTURE // do this in a loop: 3. dqbuf OUTPUT (I want to queue more OUTPUT as they become available) 4. qbuf OUTPUT // now I am done, I want to dqbuf my output 5. dqbuf CAPTURE 6. stream off OUTPUT, CAPTURE I try to do dqbuf/qbuf OUTPUT in step #3, #4 above, but it just stuck in dqbuf OUTPUT. How can I queue more of my input data after I stream on? Thank you. -- 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
