DM365 hanged at DMA_TI_Wait

Hi all,

  I must implement a library to manipulate encoder and decoder. I refered the dvsdk_2_10_01_18\dm365_codecs_01_00_06\packages\ti\sdo\codecs.
  My encoder class can run well by itself. The pseudo code is in below
   

    codec_init();
    encoder_open(&g_enc, &g_param);
    for( i = 0 ; i < 30; ++i )
    {
        encoder_encode(&g_enc, capturedFrame_yuv420sp, encodedFrame_output, &output_len);
    }
    encoder_close(&g_enc);
    codec_exit();

  Unfortunately, it will be hanged in DMA_TI_Wait, if I added my decoder class and run together.
  I am sure that the first frame was encoded and decoded successfully. The program will stop while to encode the second frame.
 What may I missed if I want to put encoder and decoder together? The pseudo code is in below

    /* codec_init:
       do CMEM_init, RMAN_init,
       RMAN_register IRESMAN_EDMA3CHAN, IRESMAN_VICP2, IRESMAN_HDVICP, IRESMAN_ADDRSPACE
       NEW CODE: do BUFFMGR_Init(H264_DPB_SIZE_PROFILE_3_1)
    */
    codec_init();

    encoder_open(&g_enc, &g_param);

    /*
     NEW CODE: H264VDEC_create, RMAN_assignResources H264VDEC_TI_IRES,
        H264VDEC_control to get XDM_GETBUFINFO...
    */
    decoder_open(&g_dec, &g_param);

    for( i = 0 ; i < 30; ++i )
    {
        encoder_encode(&g_enc, capturedFrame_yuv420sp, encodedFrame_output, &output_len);
        decoder_decode(&g_dec, encodedFrame_output, output_len, decodedFrame_output, &output_len);
    }
    decoder_close(&g_dec);
    encoder_close(&g_enc);

    /* codec_exit:
       RMAN_unregister IRESMAN_EDMA3CHAN, IRESMAN_VICP2, IRESMAN_HDVICP, IRESMAN_ADDRSPACE
       NEW CODE: do BUFFMGR_DeInit
    */
    codec_exit();
 
    [dump disassembly code]  
    80095E30          FUNC32, DMA_TI_Wait:
    80095E30 E3520000 CMP           R2, #0x0
    80095E34 E24DD004 SUB           R13, R13, #0x4
    80095E38 128DD004 ADDNE         R13, R13, #0x4
    80095E3C 112FFF1E BXNE          R14
    80095E40 E080C101 ADD           R12, R0, R1, LSL #2
    80095E44 E59CC0B0 LDR           R12, [R12, #0xB0]
    80095E48 E58DC000 STR           R12, [R13]
    80095E4C E59DC000 LDR           R12, [R13]
    80095E50 E35C0020 CMP           R12, #0x20
    80095E54 E5900838 LDR           R0, [R0, #0x838]
    80095E58 3A000010 BCC           0x80095EA0
    80095E5C E59DC000 LDR           R12, [R13]
    80095E60 E24CC020 SUB           R12, R12, #0x20
    80095E64 E3A0306C MOV           R3, #0x6C
    80095E68 E58DC000 STR           R12, [R13]
    80095E6C E3A0C001 MOV           R12, #0x1
    80095E70 E2832A01 ADD           R2, R3, #0x1000
    80095E74 E59D1000 LDR           R1, [R13]
    80095E78 E7922000 LDR           R2, [R2, R0]
    80095E7C E112011C TST           R2, R12, LSL R1
    80095E80 0AFFFFFA BEQ           0x80095E70
    80095E84 E59D1000 LDR           R1, [R13]
    80095E88 E1A0C11C MOV           R12, R12, LSL R1
    80095E8C E3A01074 MOV           R1, #0x74
    80095E90 E2811A01 ADD           R1, R1, #0x1000
    80095E94 E781C000 STR           R12, [R1, R0]
    80095E98 E28DD004 ADD           R13, R13, #0x4
    80095E9C E12FFF1E BX            R14
    80095EA0 E3A02068 MOV           R2, #0x68              ;; 0x80095EA0
    80095EA4 E59D1000 LDR           R1, [R13]
    80095EA8 E3A0C001 MOV           R12, #0x1
    80095EAC E2822A01 ADD           R2, R2, #0x1000
    80095EB0 E7922000 LDR           R2, [R2, R0]
    80095EB4 E112011C TST           R2, R12, LSL R1
    80095EB8 0AFFFFF8 BEQ           0x80095EA0             ;; infinite-loop go back address 0x80095EA0