大家好
我使用DM6467t进行1080P的h264编码，但总是在回放的时候不连续，我使用CCS进行h264编码的处理，代码如下：
1. 在DSP端采集h264编码器
...
/* Initialize H264 parameters */
gVidEncObj.prm.videncParams.size = sizeof(IH264FHDVENC_Params);
gVidEncObj.prm = IH264FHDVENC_PARAMS;
gVidEncObj.prm.videncParams.encodingPreset = 0; /* N/A */
/* Set rate control type, CBR or VBR */
if (data->rateCtlType == VIDENC_RC_OFF)
gVidEncObj.prm.videncParams.rateControlPreset = IVIDEO_NONE;
else if (data->rateCtlType == VIDENC_RC_VBR)
gVidEncObj.prm.videncParams.rateControlPreset = IVIDEO_STORAGE;
else
gVidEncObj.prm.videncParams.rateControlPreset = IVIDEO_LOW_DELAY;
/* Set Video size, max is 1920 x 1088 */
gVidEncObj.prm.videncParams.maxWidth = data->maxWidth;
gVidEncObj.prm.videncParams.maxHeight = data->maxHeight;
gVidEncObj.prm.videncParams.maxFrameRate = data->maxFrameRate * 1000;
gVidEncObj.prm.videncParams.maxBitRate = data->maxBitRate;
gVidEncObj.prm.videncParams.dataEndianness = XDM_LE_32;
gVidEncObj.prm.videncParams.maxInterFrameInterval = 0; /* N/A */
gVidEncObj.prm.videncParams.inputChromaFormat = H264FHDVENC_TI_422SP;
gVidEncObj.prm.videncParams.inputContentType = IVIDEO_PROGRESSIVE;
gVidEncObj.prm.videncParams.reconChromaFormat = XDM_CHROMA_NA;
/* Profile ID and level ID */
gVidEncObj.prm.profileIdc = data->profileId;
gVidEncObj.prm.levelIdc = data->levelId;
gVidEncObj.prm.EntropyCodingMode = 0; /* Mode of entropy coding to be used for encoding. */
/* Video dynamic parameter */
gVidEncObj.dyn.videncDynamicParams.size = sizeof(IH264FHDVENC_DynamicParams);
gVidEncObj.dyn.videncDynamicParams.inputWidth = gVidEncObj.prm.videncParams.maxWidth;
gVidEncObj.dyn.videncDynamicParams.inputHeight = gVidEncObj.prm.videncParams.maxHeight;
gVidEncObj.dyn.videncDynamicParams.refFrameRate = gVidEncObj.prm.videncParams.maxFrameRate;
gVidEncObj.dyn.videncDynamicParams.targetFrameRate = gVidEncObj.prm.videncParams.maxFrameRate;
gVidEncObj.dyn.videncDynamicParams.targetBitRate = gVidEncObj.prm.videncParams.maxBitRate;
gVidEncObj.dyn.videncDynamicParams.intraFrameInterval = data->maxFrameRate;
gVidEncObj.dyn.videncDynamicParams.generateHeader = XDM_ENCODE_AU;
gVidEncObj.dyn.videncDynamicParams.captureWidth = 0; /* N/A */
gVidEncObj.dyn.videncDynamicParams.forceFrame = IVIDEO_NA_FRAME;
gVidEncObj.dyn.videncDynamicParams.interFrameInterval = 0; /* N/A */
gVidEncObj.dyn.videncDynamicParams.mbDataFlag = 0; /* N/A */
gVidEncObj.dyn.OutBufSize = -1;
gVidEncObj.dyn.QPISlice = 28; /* Initial Quantization Parameter, [0,51], Default: 28 */
gVidEncObj.dyn.QPSlice = 28; /* Initial Quantization Parameter, [0,51], Default: 28 */
gVidEncObj.dyn.RateCtrlQpMax = 51; /* This is the maximum value of the QP, [0,51] */
gVidEncObj.dyn.RateCtrlQpMin = 0; /* This is the minimum value of the QP, [0,51] */
gVidEncObj.dyn.NumRowsInSlice = 0; /* N/A */
gVidEncObj.dyn.LfDisableIdc = 0; /* Loop filter, default is enable */
gVidEncObj.dyn.LFAlphaC0Offset = 0; /* This is the Alpha and C0 offset for the H.264 loop filter value divided by 2. [-6,+6], Default: 0 */
gVidEncObj.dyn.LFBetaOffset = 0; /* This is the Beta and C0 offset for the H.264 loop filter value divided by 2. [-6,+6], Default: 0 */
gVidEncObj.dyn.ChromaQPOffset = 0; /* The chroma QP offset for determining the QP of the chrominance blocks based on the QP of the luminance blocks. Valid range is [-12, 12], Default: 0*/
gVidEncObj.dyn.SecChromaQPOffset = 0; /* The Second Chroma QP Offset for determining the QP of the Cr blocks based on the QP of the luminance blocks.
This is used in High profile only. The valid range is [-12, 12]. Default: 0*/
gVidEncObj.dyn.PicAFFFlag = 0; /* N/A */
gVidEncObj.dyn.PicOrderCountType = 0; /* N/A */
gVidEncObj.dyn.AdaptiveMBs = 0; /* N/A */
gVidEncObj.dyn.SEIParametersFlag = 0; /* N/A */
gVidEncObj.dyn.VUIParametersFlag = 0; /* N/A */
gVidEncObj.dyn.NALUnitCallback = 0; /* N/A */
gVidEncObj.dyn.SkipStartCodesInCallback = 1; /* N/A */
gVidEncObj.dyn.Intra4x4EnableFlag = 3; /* Enable 4x4 intra modes in both I and P Pictures */
gVidEncObj.dyn.BlockingCallFlag = 0; /* N/A */
gVidEncObj.dyn.MESelect = 1; /* N/A */
gVidEncObj.dyn.ME1080iMode = 0; /* N/A */
gVidEncObj.dyn.MVDataFlag = 0; /* N/A */
gVidEncObj.dyn.Transform8x8DisableFlag = 1; /* N/A */
gVidEncObj.dyn.Intra8x8EnableFlag = 0; /* N/A */
gVidEncObj.dyn.InterlaceReferenceMode = 0; /* N/A */
gVidEncObj.dyn.ChromaConversionMode = 0; /* 422 to 420 Chroma conversion mode select, 0: Line drop, 1: Average */
gVidEncObj.dyn.maxDelay = 1000; /* Maximum delay (in milli-seconds) */
gVidEncObj.dyn.MaxSlicesSupported_IFrame= 263; /* Maximum number of slices supported */
gVidEncObj.dyn.MaxSlicesSupported_PFrame= 263; /* Maximum number of slices supported */
gVidEncObj.dyn.sliceCodingParams.sliceCodingPreset = IH264_SLICECODING_DEFAULT;
gVidEncObj.dyn.sliceCodingParams.sliceMode = IH264_SLICEMODE_BYTES;
gVidEncObj.dyn.sliceCodingParams.sliceUnitSize = 1500; /* NALU size, MTU size */
gVidEncObj.dyn.sliceCodingParams.streamFormat = IH264_BYTE_STREAM;
...
2. 执行h264编码
status.videncStatus.size = sizeof(IH264FHDVENC_Status);
inArgs.videncInArgs.size = sizeof(IH264FHDVENC_InArgs);
inArgs.videncInArgs.inputID = 0;
outArgs.videncOutArgs.size = sizeof(IH264FHDVENC_OutArgs);
gVidEncObj.dyn.videncDynamicParams.inputWidth = prm->width;
gVidEncObj.dyn.videncDynamicParams.inputHeight = prm->height;
gVidEncObj.inBuf.frameWidth = gVidEncObj.dyn.videncDynamicParams.inputWidth;
gVidEncObj.inBuf.framePitch = gVidEncObj.dyn.videncDynamicParams.inputWidth;
gVidEncObj.inBuf.frameHeight = gVidEncObj.dyn.videncDynamicParams.inputHeight;
/* Frame rate */
if (prm->frameRate!=0)
{
gVidEncObj.dyn.videncDynamicParams.refFrameRate = prm->frameRate * 1000;
gVidEncObj.dyn.videncDynamicParams.targetFrameRate = prm->frameRate * 1000;
gVidEncObj.dyn.videncDynamicParams.intraFrameInterval = prm->frameRate;
}
/* Bit rate in bps */
if (prm->bitRate!=0)
{
gVidEncObj.dyn.videncDynamicParams.targetBitRate = prm->bitRate;
}
/* Prepares video input buffer */
len = gVidEncObj.dyn.videncDynamicParams.inputWidth * gVidEncObj.dyn.videncDynamicParams.inputHeight;
/* Configure Output buffer */
gVidEncObj.outBuf.bufs[0] = (XDAS_Int8 *)prm->outAddr;
for (idx=1; idx<gVidEncObj.outBuf.numBufs; idx++)
{
gVidEncObj.outBuf.bufs[idx] = gVidEncObj.outBuf.bufs[idx-1] + gVidEncObj.outBuf.bufSizes[idx-1];
}
BCACHE_wbInvAll();
/* Do Key frame encoder, SPS + PPS + IDR */
len = 0;
outArgs.videncOutArgs.inputFrameSkip = 0;
if (prm->forceKey)
{
/* Generate frame header with SPS and PPS */
gVidEncObj.dyn.videncDynamicParams.generateHeader = XDM_GENERATE_HEADER;
H264FHDVENC_control(gVidEncObj.hdl, XDM_SETPARAMS, &gVidEncObj.dyn, &status);
if (H264FHDVENC_encode(gVidEncObj.hdl, &gVidEncObj.inBuf, &gVidEncObj.outBuf, &inArgs, &outArgs) != XDM_EOK)
{
st->bytesGenerated = 0;
return -1;
}
len = outArgs.videncOutArgs.bytesGenerated;
/* Generate IDR frame offset from header */
gVidEncObj.outBuf.bufs[0] = (XDAS_Int8 *)(prm->outAddr + len);
for (idx=1; idx<gVidEncObj.outBuf.numBufs; idx++)
{
gVidEncObj.outBuf.bufs[idx] = gVidEncObj.outBuf.bufs[idx-1] + gVidEncObj.outBuf.bufSizes[idx-1];
}
gVidEncObj.dyn.videncDynamicParams.generateHeader = XDM_ENCODE_AU;
gVidEncObj.dyn.videncDynamicParams.forceFrame = IVIDEO_IDR_FRAME;
H264FHDVENC_control(gVidEncObj.hdl, XDM_SETPARAMS, &gVidEncObj.dyn, &status);
}
else
{
/* Generate P frame */
gVidEncObj.dyn.videncDynamicParams.generateHeader = XDM_ENCODE_AU;
gVidEncObj.dyn.videncDynamicParams.forceFrame = IVIDEO_NA_FRAME;
H264FHDVENC_control(gVidEncObj.hdl, XDM_SETPARAMS, &gVidEncObj.dyn, &status);
}
if (H264FHDVENC_encode(gVidEncObj.hdl, &gVidEncObj.inBuf, &gVidEncObj.outBuf, &inArgs, &outArgs) != XDM_EOK)
{
st->bytesGenerated = 0;
return -1;
}
...
我想知道问题是否出自编码器或编码器的配置上。
谢谢！！
