mt9p031 1-005d: No MT9P031 chip detected, register read ffffff87
vpfe-capture vpfe-capture: v4l2 sub device mt9p031 register fails

通过示波器测试，i2c 的有时钟信号，通过数据线波形可以看到写地址为 0xBA，但是没有应答 ACK。等待一段时间后再发，还是没有应答。 说明核心板有发送设备地址给 MT9P031 的，只不过没有应答。经查 MT9P031 小板，第13 引脚应为高电平才会回应设备 ID  0xBA。但是我们的硬件设计为低电平了。问题找到。

正确的内核启动信息：

mt9p031 1-005d: Detected a MT9P031 chip ID 1801mt9p031 1-005d: mt9p031 1-005d decoder driver registered !!vpfe-capture vpfe-capture: v4l2 sub device mt9p031 registeredvpfe_register_ccdc_device: DM365 ISIFDM365 ISIF is registered with vpfe.

三、测试demo里的encode

/* * encode.txt * * This readme file explains the options and describes how to use 'encode demo'  * on DM365 platform. * * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/  *  *  *  Redistribution and use in source and binary forms, with or without  *  modification, are permitted provided that the following conditions  *  are met: * *    Redistributions of source code must retain the above copyright  *    notice, this list of conditions and the following disclaimer. * *    Redistributions in binary form must reproduce the above copyright *    notice, this list of conditions and the following disclaimer in the  *    documentation and/or other materials provided with the    *    distribution. * *    Neither the name of Texas Instruments Incorporated nor the names of *    its contributors may be used to endorse or promote products derived *    from this software without specific prior written permission. * *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT  *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT  *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,  *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT  *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE  *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. **/NAME       encode - encode video and/or audio or speech filesSYNOPSIS       encode [options...]DESCRIPTION       This demo uses the Codec Engine to encode data from peripheral device       drivers to files. Video, audio and speech files are supported. The files       created will be encoded elementary streams of video/audio/speech.       You must supply at least one file for the demo to run.       The DM365MM and CMEM kernel modules need to be inserted for this demo       to run.  Use the script 'loadmodule-rc' in the DVSDK to make sure both       kernel modules are loaded with adequate parameters.OPTIONS       -v <video file>, --videofile <video file>             Encodes video data to the given file. The file will be created if             it doesn't exist, and truncated if it does exist. The demo             detects which type of video file is supplied using the file             extension. Supported video algorithm is MPEG4 SP, H.264 MP, MPEG2             (.mpeg4 or .m4v extension, .264, .m2v).       -s <speech file>, --speechfile <speech file>             Encodes speech data to the given file. The file will be created             if it doesn't exist, and truncated if it does exist. The demo             detects which type of speech file is supplied using the file             extension. The only supported speech algorithm as of now is             G.711 (.g711 extension).       -a <audio file>, --audiofile <audio file>             Encodes audio data to the given file. The file will be created             if it doesn't exist, and truncated if it does exist. The demo             detects which type of audio file is supplied using the file             extension. The only supported speech algorithm as of now is             AAC (.aac extension).       -y <1-5>, --display_standard <1-5>             Sets the resolution of the display. If the captured resolution             is larger than the display it will be center clamped, and if it             is smaller the image will be centered.                    1       D1 @ 30 fps (NTSC)                    2       D1 @ 25 fps (PAL)                    3       720P @ 60 fps    [Default]                    5       1080I @ 30 fps - for DM368         -r <resolution>, --resolution <resolution>             The resolution of video to encode in the format 'width'x'height'.             Default is the size of the video standard (720x480 for NTSC,             720x576 for PAL, 1280x720 for 720P).       -b <bit rate>, --videobitrate <bit rate>             This option sets the bit rate with which the video will be             encoded. Use a negative value for variable bit rate. Default is             variable bit rate.       -p <bit rate>, --soundbitrate <bit rate>             This option sets the bit rate with which the audio will be             encoded. Use a negative value for variable bit rate. Default is             96000.       -u <sample rate>, --samplerate <sample rate>             This option sets the sample rate with which the video will be             encoded. Default is 44100 Hz.       -w, --preview_disable             Disable preview of captured video frames.       -f, --write_disable             Disable recording of encoded file. This helps to validate              performance without file I/O.       -I, --video_input		     Video input source to use.                 1       Composite                                                                        2       S-video                                                                          3       Component                                                                        4       Imager/Camera - for DM368               When not specified, the video input is chosen based on the display              video standard selected. NTSC/PAL use Composite, 720P uses              Component, and 1080I uses the Imager/Camera.       -l, --linein             This option makes the input device for sound recording be the             'line in' as opposed to the 'mic in' default.       -k, --keyboard             Enables the keyboard input mode which lets the user input             commands using the keyboard in addition to the QT-based OSD             interface. At the prompt type 'help' for a list of available             commands.        -t <seconds>, --time <seconds>             The number of seconds to run the demo. Defaults to infinite time.       -o, --osd             Enables the On Screen Display for configuration and data              visualization using a QT-based UI. If this option is not passed,              the data will be output to stdout instead.       -h, --help             This will print the usage of the demo.EXAMPLE USAGE       First execute this script to load kernel modules required:             ./loadmodules.sh       General usage:             ./encode -h              H264 HP video encode only @720p resolution with OSD:             ./encode -v test.264 -y 3 -o              H264 HP video encode from s-video and G.711 speech encode:             ./encode -v test.264 -s test.g711 -I 2       MPEG4 SP video encode only in CIF NTSC resolution with OSD:             ./encode -v test.mpeg4 -r 352x240 -o       MPEG4 SP video encode at 1Mbps with keyboard interface on D1 PAL display:             ./encode -v test.mpeg4 -b 1000000 -k -y 2COPYRIGHT       Copyright (c) Texas Instruments Inc 2011       Use of this software is controlled by the terms and conditions found in       the license agreement under which this software has been supplied or       provided.KNOWN ISSUESVERSION       4.02CHANGELOG       from 4.01:             Modified data flow to eliminate frame copies to maximize             performance.             Modified thread priorities to enhance performance.       from 4.0:             Added support of 1080I display video standard for DM368             Added support of Camera input for DM368             Removed s-video (-x) option.             Added -I option to select video input.             Added options to disable preview and recording of encoded output.       from 3.10:             Replaced old remote-driven interface with QT-based interface. This             can be turned on using the '-o' flag.             Added audio thread to allow audio encode.             Added options for audio support ('-a', '-p', '-u').             Added MPEG2 support.SEE ALSO       For documentation and release notes on the individual components see       the html files in the host installation directory.

进行测试：

root@dm368-evm:/# ./encode_demo -v t.264 -I 4 -y 3 -b 1000 -wEncode demo started.###### output_store ############ davinci_get_cur_encoder ############ vpbe_encoder_initialize ############ output is COMPONENT,outindex is 1 ############ vpbe_encoder_setoutput ############ dm365 = 1 ############ mode_info->std is 1 ############ mode is 480P-60 ############ 22VPBE Encoder initialized ############ vpbe_encoder_setoutput ############ dm365 = 1 ############ mode_info->std is 1 ############ mode is 480P-60 ############ davinci_enc_set_output : next davinci_enc_set_mode_platform ############ davinci_enc_set_mode_platform : next davinci_enc_priv_setmode ############ output_show ############ davinci_enc_get_output ############ davinci_get_cur_encoder ############ mode_store ############ davinci_enc_get_mode ############ davinci_get_cur_encoder ############ davinci_enc_set_mode ############ davinci_get_cur_encoder ############ dm365 = 1 ############ mode_info->std is 1 ############ mode is 576P-50 ############ davinci_enc_set_mode : next davinci_enc_set_mode ############ davinci_enc_set_mode_platform : next davinci_enc_priv_setmode ############ mode_show ############ davinci_enc_get_mode ############ davinci_get_cur_encoder ############ davinci_enc_get_mode ############ davinci_get_cur_encoder ############ davinci_enc_get_mode ############ davinci_get_cur_encoder ######davinci_resizer davinci_resizer.2: RSZ_G_CONFIG:0:1:124davinci_previewer davinci_previewer.2: ipipe_set_preview_configdavinci_previewer davinci_previewer.2: ipipe_set_preview_configvpfe-capture vpfe-capture: IPIPE Chainedvpfe-capture vpfe-capture: Resizer presentdm365evm_enable_pca9543adm365evm_enable_pca9543a, status = -121EVM: switch to HD imager video input######vpfe_dev->current_subdev->is_camera.-----Exposure time = 2f2############v4l2_device_call_until_err sdinfo->grp_id : 4.-----Exposure time = 2f2vpfe-capture vpfe-capture: width = 1280, height = 720, bpp = 1vpfe-capture vpfe-capture: adjusted width = 1280, height = 720, bpp = 1, bytesperline = 1280, sizeimage = 1382400vpfe-capture vpfe-capture: width = 1280, height = 720, bpp = 1vpfe-capture vpfe-capture: adjusted width = 1280, height = 720, bpp = 1, bytesperline = 1280, sizeimage = 1382400ARM Load: 28% Video fps: 31 fps Video bit rate: 42 kbps Sound bit rate: 0 kbps Time: 08:00:01 Demo: Encode Display: 720P 60Hz Video Codec: H.264 HP Resolution: 1280x720 Sound Codec: N/A Sampling Freq: N/A ARM Load: 10% Video fps: 30 fps Video bit rate: 32 kbps Sound bit rate: 0 kbps Time: 08:00:02 Demo: Encode Display: 720P 60Hz Video Codec: H.264 HP Resolution: 1280x720 Sound Codec: N/A Sampling Freq: N/A ARM Load: 61% Video fps: 31 fps Video bit rate: 28 kbps Sound bit rate: 0 kbps Time: 08:00:03 Demo: Encode Display: 720P 60Hz Video Codec: H.264 HP Resolution: 1280x720 Sound Codec: N/A Sampling Freq: N/A ARM Load: 9% Video fps: 30 fps Video bit rate: 27 kbps Sound bit rate: 0 kbps Time: 08:00:04 Demo: Encode Display: 720P 60Hz Video Codec: H.264 HP Resolution: 1280x720 Sound Codec: N/A Sampling Freq: N/A ARM Load: 62% Video fps: 30 fps Video bit rate: 35 kbps Sound bit rate: 0 kbps Time: 08:00:06 Demo: Encode Display: 720P 60Hz Video Codec: H.264 HP Resolution: 1280x720 Sound Codec: N/A Sampling Freq: N/A ARM Load: 10% Video fps: 30 fps Video bit rate: 37 kbps Sound bit rate: 0 kbps Time: 08:00:07 Demo: Encode Display: 720P 60Hz Video Codec: H.264 HP Resolution: 1280x720 Sound Codec: N/A Sampling Freq: N/A ARM Load: 45% Video fps: 30 fps Video bit rate: 28 kbps Sound bit rate: 0 kbps Time: 08:00:08 Demo: Encode Display: 720P 60Hz Video Codec: H.264 HP Resolution: 1280x720 Sound Codec: N/A Sampling Freq: N/A ARM Load: 29% Video fps: 31 fps Video bit rate: 27 kbps Sound bit rate: 0 kbps Time: 08:00:09 Demo: Encode Display: 720P 60Hz Video Codec: H.264 HP Resolution: 1280x720 Sound Codec: N/A Sampling Freq: N/A ARM Load: 23% Video fps: 29 fps Video bit rate: 29 kbps Sound bit rate: 0 kbps Time: 08:00:10 Demo: Encode Display: 720P 60Hz Video Codec: H.264 HP Resolution: 1280x720 Sound Codec: N/A Sampling Freq: N/A ARM Load: 51% Video fps: 31 fps Video bit rate: 43 kbps Sound bit rate: 0 kbps Time: 08:00:12 Demo: Encode Display: 720P 60Hz Video Codec: H.264 HP Resolution: 1280x720 Sound Codec: N/A Sampling Freq: N/A 

四、搭建 RTSP 服务器

if (fwrite(Buffer_getUserPtr(hOutBuf),     Buffer_getNumBytesUsed(hOutBuf), 1, outFile) != 1) {    ERR("Error writing the encoded data to video file\n");    cleanup(THREAD_FAILURE);}

然后就是看RTSP协议了。不过说回来我参看的这个RTSP协议源码，都没有找到出处。

/*
* writer.c
*
* This source file has the implementations for the writer thread
* functions implemented for 'DVSDK encode demo' on DM365 platform
*
* Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/ 
* 
* 
*  Redistribution and use in source and binary forms, with or without 
*  modification, are permitted provided that the following conditions 
*  are met:
*
*    Redistributions of source code must retain the above copyright 
*    notice, this list of conditions and the following disclaimer.
*
*    Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the 
*    documentation and/or other materials provided with the   
*    distribution.
*
*    Neither the name of Texas Instruments Incorporated nor the names of
*    its contributors may be used to endorse or promote products derived
*    from this software without specific prior written permission.
*
*  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
*  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
*  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
*  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
*  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
*  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
*  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
*  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
*  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
*  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
*  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
//#include <stdio.h>
#include <xdc/std.h>
#include <ti/sdo/dmai/Fifo.h>
#include <ti/sdo/dmai/BufTab.h>
#include <ti/sdo/dmai/BufferGfx.h>
#include <ti/sdo/dmai/Rendezvous.h>
#include "writer.h"
#include "../demo.h"
/* Number of buffers in writer pipe */
#define NUM_WRITER_BUFS         10
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#ifdef  WIN32
#include <conio.h>
#include <windows.h>
#else
#include <pthread.h>
#endif
#include "LiveServiceRTSPInvoke.h"
unsigned long dwDeliverHandle;
unsigned long dwDeliverOne;
int g_nVideoPayloadType = 96;
#define __TEST_SEED_H264_DATA__
typedef struct
{
unsigned long		ulFifoMediaHandle;
int					nDeliverIsOk;
int					nGetIDR;
int					nServiceRun;
char				szVideoFmtp[256];
int					nExpired;
#ifdef __TEST_SEED_H264_DATA__
/*************************************************/
/*testing*/
int					nSeedTerminal;
#ifndef WIN32
pthread_t			hThread;
#else
HANDLE				hThread;
#endif
/************************************************/
#endif
}DATA_CONTEXT;
DATA_CONTEXT dataContext;  // 数据上下文
int	OnVideoExpiredCallback( void* lpData, unsigned long dwSize, int nExpired, unsigned long dwContext  )
{
DATA_CONTEXT * lpContext = (DATA_CONTEXT*)dwContext;
if( !nExpired )
{
unsigned char * lpH264Slice = (unsigned char *)lpData;
if( *(lpH264Slice+0) == 0 &&
*(lpH264Slice+1) == 0 &&
*(lpH264Slice+2) == 0 &&
*(lpH264Slice+3) == 1 )
{
if( 0x07 == ((*(lpH264Slice+4))&0x1f) )
lpContext->nExpired = 0;			/* 废弃数据直到IDR*/
}
}
else
lpContext->nExpired = 1;
return lpContext->nExpired;
}
static const char cb64[]="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
void live_base64encode(char *out,const unsigned char* in,int len)
{
for(;len >= 3; len -= 3)
{
*out ++ = cb64[ in[0]>>2];
*out ++ = cb64[ ((in[0]&0x03)<<4)|(in[1]>>4) ];
*out ++ = cb64[ ((in[1]&0x0f) <<2)|((in[2] & 0xc0)>>6) ];
*out ++ = cb64[ in[2]&0x3f];
in+=3;
}
if(len > 0)
{
unsigned char fragment;
*out ++ = cb64[ in[0]>>2];
fragment =  (in[0] &0x03)<<4 ;
if(len > 1)
fragment |= in[1] >>4 ;
*out ++ = cb64[ fragment ];
*out ++ = (len <2) ? '=' : cb64[ ((in[1]&0x0f)<<2)];
*out ++ = '=';
}
*out = '\0';
}
/*---live_base64encode---*/
//视频RTSP发送
int ON_VIDEO_DELIVER_RTSP_SEND( void* lpStreamData, unsigned long * lpdwSize, unsigned long dwContext  )
{
DATA_CONTEXT * lpDataContext = (DATA_CONTEXT*)dwContext;
unsigned char* lpDataBuf = NULL;
unsigned long dwSize = 0;
unsigned long dwTick = 0;
if( NULL == lpStreamData || NULL == lpdwSize )
{
/* THIS CHANNEL NOW TO DISABLE*/
lpDataContext->nDeliverIsOk = 0;
return 0;
}
*lpdwSize = 0;
lpDataContext->nDeliverIsOk = 1;
if( LiveDeliverRTSP_FifoMediaPopOne( lpDataContext->ulFifoMediaHandle, &lpDataBuf, &dwSize, &dwTick ) )
{
*lpdwSize = dwSize;
memcpy( lpStreamData, lpDataBuf, dwSize );
LiveDeliverRTSP_FifoMediaFreeOne( lpDataContext->ulFifoMediaHandle, lpDataBuf, dwSize );
}
#if 0 //cjk 
else
{
*lpdwSize = 0;
}
#endif
return 0;
}
//检测H264帧数据OK
void	OnH264FrameDataOK( DATA_CONTEXT * lpDataContext, unsigned char * lpDataBuf, unsigned long ulSize )
{
if( lpDataContext && lpDataBuf && ulSize )
{
if( !lpDataContext->nGetIDR )
{
unsigned char * lpSPS = NULL;
unsigned char * lpSPS_E = NULL;
unsigned char * lpPPS = NULL;
unsigned char * lpPPS_E = NULL;
unsigned int fNalType = 0;
if(		( 0 == *(lpDataBuf+0) ) && 
( 0 == *(lpDataBuf+1) ) && 
( 0 == *(lpDataBuf+2) ) && 
( 1 == *(lpDataBuf+3) )  )
{
fNalType = (0x01f&(*(lpDataBuf+4)));
}
if( 7 == fNalType )	/*SPS*/
{
unsigned char * pNextNal = lpDataBuf+4;
unsigned char * pEnd = lpDataBuf+ulSize;
lpSPS = lpDataBuf;
while( pNextNal < pEnd )
{
if(		( 0 == *(pNextNal+0) ) && 
( 0 == *(pNextNal+1) ) && 
( 0 == *(pNextNal+2) ) && 
( 1 == *(pNextNal+3) )  )
{
if( !lpSPS_E )
lpSPS_E = pNextNal;
fNalType = (0x01f&(*(pNextNal+4)));
if( 8 == fNalType )	/*PPS*/
{
if( !lpPPS )
lpPPS = pNextNal;
}
else
{
if( lpPPS && !lpPPS_E )
lpPPS_E = pNextNal;
}
if( lpPPS_E )
break;
}
pNextNal++;
}
if( lpSPS && lpSPS_E && lpPPS && lpPPS_E )
{
char szSPS[128];
char szPPS[32];
unsigned int profile_level_id = 0x420029;
unsigned char spsWEB[3];
live_base64encode( szSPS, lpSPS+5, lpSPS_E-lpSPS-5 );
live_base64encode( szPPS, lpPPS+5, lpPPS_E-lpPPS-5 );
//						sprintf( szSPS, "%s", "Z00AKZpmA8ARPyzUBAQFAAADA+gAAMNQBA==" );
//						sprintf( szPPS, "%s", "aO48gA==" );
spsWEB[0] = *(lpSPS+5);
spsWEB[1] = *(lpSPS+6);
spsWEB[2] = *(lpSPS+7);
profile_level_id = (spsWEB[0]<<16) | (spsWEB[1]<<8) | spsWEB[2];
sprintf( lpDataContext->szVideoFmtp, 
"a=fmtp:%d packetization-mode=1;profile-level-id=%06X;sprop-parameter-sets=%s,%s",
g_nVideoPayloadType,
profile_level_id,
szSPS,
szPPS );
lpDataContext->nGetIDR = 1;
}
}
}
//管道FIFO新的一个
LiveDeliverRTSP_FifoMediaNewOne( lpDataContext->ulFifoMediaHandle, lpDataBuf, ulSize );
}
}
void iRelease (int signo)
{
if( dwDeliverOne )
{
LiveDeliverRTSP_StopOne( dwDeliverHandle, dwDeliverOne );
LiveDeliverRTSP_ReleaseOne( dwDeliverHandle, &dwDeliverOne );
}
LiveDeliverRTSP_Exit( &dwDeliverHandle );
if( dataContext.ulFifoMediaHandle )
{
LiveDeliverRTSP_FifoMediaRelease( dataContext.ulFifoMediaHandle );
dataContext.ulFifoMediaHandle = 0;
}
printf ("iRelease ok!!!!!!!!!!!\n");
//exit (0);
} 
/******************************************************************************
* writerThrFxn
******************************************************************************/
Void *writerThrFxn(Void *arg)
{
signal (SIGINT, iRelease);  //cjk
sleep (2);
WriterEnv          *envp            = (WriterEnv *) arg;
Void               *status          = THREAD_SUCCESS;
FILE               *outFile         = NULL;
Buffer_Attrs        bAttrs          = Buffer_Attrs_DEFAULT;
BufTab_Handle       hBufTab         = NULL;
Buffer_Handle       hOutBuf;
Int                 fifoRet;
Int                 bufIdx;
//创建FIFO  创建的函数不太一样
dataContext.ulFifoMediaHandle  = LiveDeliverRTSP_FifoMediaCreate( 1000, OnVideoExpiredCallback, (unsigned long)&dataContext );
dataContext.nDeliverIsOk = 0; //isok
dataContext.nGetIDR = 0; //IDR
dataContext.nExpired = 0;
memset( dataContext.szVideoFmtp, 0, sizeof(dataContext.szVideoFmtp) );
dwDeliverHandle = LiveDeliverRTSP_Init( 8765 );
dwDeliverOne = 0;
/* Open the output video file */
outFile = fopen(envp->videoFile, "w");
if (outFile == NULL) {
ERR("Failed to open %s for writing\n", envp->videoFile);
cleanup(THREAD_FAILURE);
}
/*
* Create a table of buffers for communicating buffers to
* and from the video thread.
*/
hBufTab = BufTab_create(NUM_WRITER_BUFS, envp->outBufSize, &bAttrs);
if (hBufTab == NULL) {
ERR("Failed to allocate contiguous buffers\n");
cleanup(THREAD_FAILURE);
}
/* Send all buffers to the video thread to be filled with encoded data */
for (bufIdx = 0; bufIdx < NUM_WRITER_BUFS; bufIdx++) {
if (Fifo_put(envp->hOutFifo, BufTab_getBuf(hBufTab, bufIdx)) < 0) {
ERR("Failed to send buffer to display thread\n");
cleanup(THREAD_FAILURE);
}
}
/* Signal that initialization is done and wait for other threads */
Rendezvous_meet(envp->hRendezvousInit);
int iRTSPCreateFlag = 0;
dataContext.nGetIDR = 0;
while (TRUE) {
if(0 == iRTSPCreateFlag)
{
if( dataContext.nGetIDR )
{
int nVideoBPS	= 8*1024*1024;
dwDeliverOne  = LiveDeliverRTSP_CreateOne( dwDeliverHandle, "pvm", 
ON_VIDEO_DELIVER_RTSP_SEND, (unsigned long)&dataContext, 
NULL, 0 );
LiveDeliverRTSP_SetupOne( dwDeliverHandle, dwDeliverOne, 1, g_nVideoPayloadType, "H264", 90000, dataContext.szVideoFmtp, nVideoBPS );
LiveDeliverRTSP_PlayOne( dwDeliverHandle, dwDeliverOne );
dataContext.nDeliverIsOk = 1;
dataContext.nServiceRun = 1;
iRTSPCreateFlag = 1;
//sleep (10);
//writerEnv.nDeliverIsOk = 0;
//writerEnv.nGetIDR = 0;
}    	
}
/* Get an encoded buffer from the video thread */
fifoRet = Fifo_get(envp->hInFifo, &hOutBuf);
if (fifoRet < 0) {
ERR("Failed to get buffer from video thread\n");
cleanup(THREAD_FAILURE);
}
/* Did the video thread flush the fifo? */
if (fifoRet == Dmai_EFLUSH) {
cleanup(THREAD_SUCCESS);
}
if (!envp->writeDisabled) {
/* Store the encoded frame to disk */
if (Buffer_getNumBytesUsed(hOutBuf)) {
#if 0
if (fwrite(Buffer_getUserPtr(hOutBuf),
Buffer_getNumBytesUsed(hOutBuf), 1, outFile) != 1) {
ERR("Error writing the encoded data to video file\n");
cleanup(THREAD_FAILURE);
#endif
unsigned char *		lpReadBuf = (unsigned char *)Buffer_getUserPtr(hOutBuf);
unsigned long lpDateSize = (unsigned long)Buffer_getNumBytesUsed(hOutBuf);
unsigned char  *	lpFrameBuf = NULL;
unsigned char nFrameHeadFlag = 0;
while(!nFrameHeadFlag)
{
if((*lpReadBuf == 0 ) &&
(*(lpReadBuf+1) == 0 ) && 
(*(lpReadBuf+2) == 0 ) &&
(*(lpReadBuf+3) == 1 )
)
{
//int t = 0x1f &(*(lpReadBuf+4));
//if( t == 7 || t == 1 ){
nFrameHeadFlag = 1;
lpFrameBuf = lpReadBuf;
//}
}
else
{
lpDateSize -= 1;
lpReadBuf++;
}
OnH264FrameDataOK( &dataContext, lpReadBuf, lpDateSize ); 
usleep( 10000 );
}
}
else {
printf("Warning, writer received 0 byte encoded frame\n");
}
}
/* Return buffer to capture thread */
if (Fifo_put(envp->hOutFifo, hOutBuf) < 0) {
ERR("Failed to send buffer to display thread\n");
cleanup(THREAD_FAILURE);
}
}
cleanup:
/* Make sure the other threads aren't waiting for us */
Rendezvous_force(envp->hRendezvousInit);
Pause_off(envp->hPauseProcess);
Fifo_flush(envp->hOutFifo);
/* Meet up with other threads before cleaning up */
Rendezvous_meet(envp->hRendezvousCleanup);
/* Clean up the thread before exiting */
if (outFile) {
fclose(outFile);
}
if (hBufTab) {
BufTab_delete(hBufTab);
}
return status;
}

五、项目下载

六、测试

rtsp://192.168.2.xxx:8765/pvm

点击播放

七、问题

vpfe-capture vpfe-capture: width = 1280, height = 720, bpp = 1
vpfe-capture vpfe-capture: adjusted width = 1280, height = 720, bpp = 1, bytesperline = 1280, sizeimage = 1382400
vpfe-capture vpfe-capture: width = 1280, height = 720, bpp = 1
vpfe-capture vpfe-capture: adjusted width = 1280, height = 720, bpp = 1, bytesperline = 1280, sizeimage = 1382400
### EnableLiveOne - 1 ###
### EnableLiveOne - 2 ###
### EnableLiveOne - 3 ###
### EnableLiveOne - 5 ###
### EnableLiveOne - 6 ###
### EnableLiveOne - 7 ###
### EnableLiveOne - 8 ###
### EnableLiveOne - 9 ###
### m_lpLiveRTSPServerCore is null ###
Segmentation fault