Hi ,
ISSUE:I have faced the issue based on video capture parallel and audio loop back/simultaneous.
Both audio and videos was working parallely with QVGA (320x240) 15 fps QCIF (176x144) 15/30 fps .\
Working both audio and video for following resolution :
QVGA (320x240) 15 fps
QCIF (176x144) 15 fps
QCIF (176x144) 30 fps
Tested Commands:
--------------------------------
./mxc_v4l2_capture.out -iw 320 -ih 240 -ow 320 -oh 240 -m 1 -fr 15-d /dev/video0 -i 1 -c 1000 /v5640_320_240_30fps.yuv &
arecord -D hw:0,0 -c 2 -f S16_LE -r 8000 -t raw | aplay -D hw:0,0 -c 2 -f S16_LE -r 8000 -v
./mxc_v4l2_capture.out -iw 176 -ih 144 -ow 176 -oh 144 -m 7 -fr 15 -d /dev/video0 -i 1 -c 1000 /CAM/vv176_144_i1_15.yuv &
arecord -D hw:0,0 -c 2 -f S16_LE -r 8000 -t raw | aplay -D hw:0,0 -c 2 -f S16_LE -r 8000 -v
./mxc_v4l2_capture.out -iw 176 -ih 144 -ow 176 -oh 144 -m 7 -fr 30 -d /dev/video0 -i 1 -c 1000 /CAM/vv176_144_i1_30.yuv &
arecord -D hw:0,0 -c 2 -f S16_LE -r 8000 -t raw | aplay -D hw:0,0 -c 2 -f S16_LE -r 8000 -v
--------------------------------
Both audio and video is not working for following resolution :
QVGA (320x240) 30 fps
QVGA (640x480) 30 fps
QVGA (640x480) 15 fps
Tested Commands:
--------------------------------
./mxc_v4l2_capture.out -iw 640 -ih 480 -ow 640 -oh 480 -m 0 -fr 30 -d /dev/video0 -i 1 -c 1000 /CAM/v5640_640_480p_30fps.yuv &
arecord -D hw:0,0 -c 2 -f S16_LE -r 8000 -t raw | aplay -D hw:0,0 -c 2 -f S16_LE -r 8000 -v
./mxc_v4l2_capture.out -iw 640 -ih 480 -ow 640 -oh 480 -m 0 -fr 10 -d /dev/video0 -i 1 -c 1000 /CAM/v5640_640_480p_10fps.yuv &
arecord -D hw:0,0 -c 2 -f S16_LE -r 8000 -t raw | aplay -D hw:0,0 -c 2 -f S16_LE -r 8000 -v
./mxc_v4l2_capture.out -iw 320 -ih 240 -ow 320 -oh 240 -m 1 -fr 15 -d /dev/video0 -i 1 -c 1000 /v5640_320_240_15fps.yuv &
arecord -D hw:0,0 -c 2 -f S16_LE -r 8000 -t raw | aplay -D hw:0,0 -c 2 -f S16_LE -r 8000 -v
--------------------------------
Any memory related issue happening in the driver side for both camera capture and audio working time?
How to solve this issue?
Following things are the memory allocation in kernel drive(linux-3.0.35)
Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)
Memory: 256MB = 256MB total
Memory: 248016k/248016k available, 276272k reserved, 0K highmem
Virtual kernel memory layout:
vector : 0xffff0000 - 0xffff1000 ( 4 kB)
fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
DMA : 0xf4600000 - 0xffe00000 ( 184 MB)
vmalloc : 0xa0800000 - 0xf2000000 (1304 MB)
lowmem : 0x80000000 - 0xa0000000 ( 512 MB)
pkmap : 0x7fe00000 - 0x80000000 ( 2 MB)
modules : 0x7f000000 - 0x7fe00000 ( 14 MB)
.init : 0x80008000 - 0x80032000 ( 168 kB)
.text : 0x80032000 - 0x808f6bf0 (8979 kB)
.data : 0x808f8000 - 0x80947240 ( 317 kB)
Audio and camera clock settings:
Audio clock settings:
MX6DL_PAD_GPIO_0__CCM_CLKO,--->Audio MCLK clock
static int wm8960_clk_enable(int enable)
{
| | if (enable) |
| | clk_enable(clko); |
| | else |
| | clk_disable(clko); |
| | printk(" %s HELLO old wm8960\n\n\n",__func__); |
| | return 0; |
}
static int mxc_wm8960_init(void)
{
| printk(" %s HELLO old wm8960\n\n\n",__func__); |
| | clko = clk_get(NULL, "clko_clk"); |
| | if (IS_ERR(clko)) { |
| | pr_err("can't get CLKO clock.\n"); |
| | return PTR_ERR(clko); |
| | } |
| | /* both audio codec and comera use CLKO clk*/ |
| | rate = clk_round_rate(clko, 24000000); |
| rate = clk_round_rate(clko, 12000000); |
| | clk_set_rate(clko, rate); |
| | wm8960_data.sysclk = rate; |
| | printk(" %s End rate=%d\n\n\n",__func__,rate); |
| | return 0; |
}
static int __init imx6q_init_audio(void)
{
platform_device_register(&sabresd_vwm8960_reg_devices);
mxc_register_device(&mx6_sabresd_audio_wm8960_device,
&wm8960_data);
imx6q_add_imx_ssi(1, &mx6_sabresd_ssi_pdata);
mxc_wm8960_init();
printk("HELLO old wm8960\n\n\n");
return 0;
}
static struct mxc_audio_platform_data wm8960_data = {
.ssi_num = 1,
.src_port = 2,
.ext_port = 3,
.hp_active_low = 1,
.mic_active_low = 1,
.init = mxc_wm8960_init,
.clock_enable = wm8960_clk_enable,
};
Camera clock settings:
MX6DL_PAD_GPIO_6__CCM_CCM_OUT_0 -->GPIO_6 CAmera clock
static struct imx_ipuv3_platform_data ipu_data[] = {
{
.rev = 4,
.csi_clk[0] = "clko2_clk",
.bypass_reset = false,
},
#ifndef OV9712_CAM_CONFIG
#if 1
{
.rev = 4,
.csi_clk[0] = "clko2_clk",
.bypass_reset = false,
#endif
#endif
};
static struct fsl_mxc_capture_platform_data capture_data[] = {
{
.csi = 0,
.ipu = 0,
.mclk_source = 0,
.is_mipi = 0,
},
#if 1
{
.csi = 1,
.ipu = 0,
.mclk_source = 0,
.is_mipi = 1,
},
static struct mipi_csi2_platform_data mipi_csi2_pdata = {
.ipu_id = 0,
.csi_id = 0,
.csi_id = 1,
.lanes = 2,
.dphy_clk = "mipi_pllref_clk",
.pixel_clk = "emi_clk",
};
---------
mx6_sabresd_board_init(void)()
{
clko2 = clk_get(NULL, "clko2_clk");
if (IS_ERR(clko2))
{
pr_err("can't get CLKO2 clock.\n");
printk(" %s clko2 error \n\n\n",__func__);
}
new_parent = clk_get(NULL, "osc_clk");
if (!IS_ERR(new_parent)) {
clk_set_parent(clko2, new_parent);
clk_put(new_parent);
printk(" %s clko2 parent error \n\n\n",__func__);
}
rate = clk_round_rate(clko2, 24000000);
clk_set_rate(clko2, rate);
clk_enable(clko2);
printk(" %s 2 clko2 set rate=%d\n\n\n",__func__,rate);
}
----------
Please let me know whats happening inside the kernel while accessing the caera capture above QVGA resolution with audio,
Without camera capture audio playback and capture working properly,if once camera capture enabled that time audio is not working .
Audio using CLKO(GPIO_0) and video using the clk CLKO2(GPIO_6).
How to solve this simultaneous memory related issue in inx6 solo/dl processor.
Thanks by,
Venkat
: Source Code