DV1394_PAL_FRAME_SIZE 103 libavdevice/dv1394.c dv->ring = mmap(NULL, DV1394_PAL_FRAME_SIZE * DV1394_RING_FRAMES, DV1394_PAL_FRAME_SIZE 188 libavdevice/dv1394.c dv->ring + (dv->index * DV1394_PAL_FRAME_SIZE), DV1394_PAL_FRAME_SIZE 189 libavdevice/dv1394.c DV1394_PAL_FRAME_SIZE, -1);