Hi,
I have an audio issue in DVRRDK platform. Audio data will move to neighbor channel (channel 3) after an EPIPE error when only an input to channel 1. The log info as follow:
frame=47,buffer=0x71,0xfb,0xb,0x0
frame=209,buffer=0x54,0xe9,0x8,0x0
frame=256,buffer=0x9b,0xf7,0xd,0x0
frame=256,buffer=0x65,0xfa,0xa,0x0
frame=256,buffer=0x14,0xc,0xfe,0xff
frame=256,buffer=0x5b,0xfa,0x13,0x0
frame=256,buffer=0x92,0xff,0xff,0xff
frame=256,buffer=0x5c,0x7,0x0,0x0
frame=256,buffer=0xf9,0xf6,0x2,0x0
frame=256,buffer=0x48,0xfd,0x16,0x0
frame=256,buffer=0x4e,0x1,0x0,0x0
frame=256,buffer=0x94,0xf7,0x9,0x0
frame=256,buffer=0xcf,0x0,0xe5,0xff
frame=256,buffer=0xe6,0xfa,0xff,0xff
frame=256,buffer=0x49,0xf5,0x14,0x0
frame=-32,buffer=0x23,0x2,0xff,0xff
plughw:0,0: overrun !!!
buffer=0x2ad11ce8
read_count=1474234
frame=-11,buffer=0x23,0x2,0xff,0xff
frame=256,buffer=0x0,0x0,0xc5,0x25
Buffer=0x2ad11ce8
frame=29,buffer=0xb,0x0,0x91,0x24
frame=227,buffer=0x4,0x0,0x34,0x24
frame=256,buffer=0xf4,0xff,0x23,0x20
frame=55,buffer=0xfc,0xff,0xa9,0x24
frame=201,buffer=0x17,0x0,0x4a,0xd8
frame=256,buffer=0xf4,0xff,0x3b,0x20
frame=62,buffer=0x1,0x0,0xe0,0x20
frame=194,buffer=0x8,0x0,0x1f,0x27
frame=256,buffer=0xf6,0xff,0xf5,0x21
frame=168,buffer=0xfc,0xff,0x75,0x25
frame=88,buffer=0xfb,0xff,0x6c,0xe0
frame=256,buffer=0x12,0x0,0xca,0x1b
frame=57,buffer=0x8,0x0,0x2,0x20
frame=199,buffer=0x9,0x0,0x94,0xe7
frame=256,buffer=0xf5,0xff,0xbb,0x20
Buffer data are audioCaptureBuf[2][3][4][5], that is channel 1 and channel 3 audio samples. Before -32(EPIPE), buffer[2][3] is validate audio date, while buffer[4][5] isn't. But after EPIPE error, buffer[2][3] isn't validate audio date, and buffer[4][5] is. It seems the data in capture buffer move two bytes.
I modified AUDIO_SAMPLES_TO_READ_PER_CHANNEL from 250 to 256, which will decrease the frequency of EPIPE error, but can't remove it. And I print the buffer address before and after EPIPE, no shift. Sometimes next EPIPE error will move the data back, and sometimes not, there is no rule.
My platform is DVRRDK_V5B, software is 03.00.00.00. Audio input tvp5158. Please kindly give me some suggestion, thanks!
