Hi Sakari, On Thu, Aug 22, 2013 at 7:29 PM, Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> wrote: > Hi Jiaquan, > > On Wednesday 21 August 2013 18:14:50 Su Jiaquan wrote: >> On Tue, Aug 20, 2013 at 8:53 PM, Laurent Pinchart wrote: >> > Hi Jiaquan, >> > >> > I'm not sure if that's needed here. Vendor-specific formats still need to >> > be documented, so we could just create a custom YUV format for your case. >> > Let's start with the beginning, could you describe what gets transmitted >> > on the bus when that special format is selected ? >> >> For YUV420P format, the data format sent from IPC is similar to >> V4L2_MBUS_FMT_YUYV8_1_5X8, but the content for each line is different: >> For odd line, it's YYU YYU YYU... For even line, it's YYV YYV YYV... >> then DMA engine send them to RAM in planar format. >> >> For YUV420SP format, the data format sent from IPC is YYUV YYUV >> YYUV(maybe called V4L2_MBUS_FMT_YYUV8_2X8?), but DMA engine drop UV >> every other line, then send them to RAM as semi-planar. > > V4L2_MBUS_FMT_YYUV8_2X8 looks good to me. > >> Well, the first data format is too odd, I don't have a clue how to >> call it, do you have suggestion? > > Maybe V4L2_MBUS_FMT_YU8_YV8_1_5X8 ? I've CC'ed Sakari Ailus, he's often pretty > creative for these issues. > > -- > Regards, > > Laurent Pinchart > Does the format V4L2_MBUS_FMT_YU8_YV8_1_5X8 sounds good to you? Do you have better idea how we should describe this format? If there is no further concern, I'll prepare a patch Thanks -- 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
