Hi, I tested the MFC decode example v4l2_decode from http://git.infradead.org/users/kmpark/public-apps and meet some problems as following: # ./v4l2_decode -f /dev/video5 -m /dev/video9 -d /dev/fb0 -c mpeg4 -i shrek.m4v V4L2 Codec decoding example application Kamil Debski <k.debski@xxxxxxxxxxx> Copyright 2012 Samsung Electronics Co., Ltd. (fb.c:fb_open:51): Framebuffer properties: xres=1024, yres=768, bpp=32 (fb.c:fb_open:53): Virtual resolution: vxres=1024 vyres=768 (fimc.c:fimc_open:56): FIMC Info (/dev/video5): driver="s5pv210-fimc" bus_info="" card="s5pv210-fimc" fd=0x5 (mfc.c:mfc_open:57): MFC Info (/dev/video9): driver="s5p-mfc" bus_info="" card="s5p-mfc" fd=0x6 (main.c:main:415): Successfully opened all necessary files and devices (mfc.c:mfc_dec_setup_output:101): Setup MFC decoding OUTPUT buffer size=1048576 (requested=1048576) (mfc.c:mfc_dec_setup_output:118): Number of MFC OUTPUT buffers is 2 (requested 2) (mfc.c:mfc_dec_setup_output:148): Succesfully mmapped 2 MFC OUTPUT buffers (main.c:extract_and_process_header:84): Extracted header of size 13089 (mfc.c:mfc_dec_queue_buf:178): Queued buffer on OUTPUT queue with index 0 (mfc.c:mfc_stream:236): Stream ON on OUTPUT queue (mfc.c:mfc_dec_setup_capture:277): MFC buffer parameters: 0x0 plane[0]=0 plane[1]=0 Error (mfc.c:mfc_dec_setup_capture:283): Failed to get crop information And kernel print: s5p_mfc_handle_error:420: Interrupt Error: 00000035 vidioc_g_crop:782: Cannont set crop It seems MFC buffer parameters error first. The shrek.m4v comes from http://www.uky.edu/~drlane/com351/shrek.m4v and is H264 format. But if I use -c h264, then v4l2_decode will print: Error (parser.c:parse_h264_stream:337): Output buffer too small for current frame Error (main.c:extract_and_process_header:71): Failed to extract header from stream Any suggestions? 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
