First of all , i'm so sorry for my poor English .
I want to decode two video streams in patrol way , which means i decode A for 10 seconds ,and then decode B for 10 seconds,and then back to decode A for 10 seconds....
My programm is given below:
myPrime:
/* read video parameters from pipe for decode*/
if (videoParam_fifo_get(envp->hFifoVidParam, &tempParams) != 0) {
fprintf(stderr, "read video parameter error, error line: %d, error file: %s\n", __LINE__, __FILE__);
cleanup(THREAD_FAILURE);
}
/* initialize video parameters */
params->maxFrameRate = tempParams.frameRate;
params->maxWidth = tempParams.width;
params->maxHeight = tempParams.height;
params->maxBitRate = tempParams.bitRate;
if (colorSpace == ColorSpace_YUV420PSEMI) {
params->forceChromaFormat = XDM_YUV_420SP;
} else {
params->forceChromaFormat = XDM_YUV_422ILE;
}
extnParams.displayDelay = 0;
extnParams.hdvicpHandle = (void*) NULL;
extnParams.resetHDVICPeveryFrame = 0;
extnParams.disableHDVICPeveryFrame = 1;
if(strcmp(envp->videoDecoder,"h264dec") == 0)
params->size = sizeof(IH264VDEC_Params);
extnParams.viddecParams = *params;
/* Create the video decoder */
hVd2 = Vdec2_create(hEngine, envp->videoDecoder, (VIDDEC2_Params*)&extnParams, dynParams);
if (hVd2 == NULL) {
ERR("Failed to create video decoder: %s\n", envp->videoDecoder);
cleanup(THREAD_FAILURE);
}
/* Which output buffer size does the codec require? */
bufSize = Vdec2_getOutBufSize(hVd2);
/* Both the codec and the display thread can own a buffer */
gfxAttrs.bAttrs.useMask = CODEC_FREE | DISPLAY_FREE;
/* Color space */
gfxAttrs.colorSpace = colorSpace;
/* Set the original dimensions of the Buffers to the max */
gfxAttrs.dim.width = params->maxWidth;
gfxAttrs.dim.height = params->maxHeight;
gfxAttrs.dim.lineLength = BufferGfx_calcLineLength(gfxAttrs.dim.width,colorSpace);
/* Create a table of buffers for decoded data */
hBufTab = BufTab_create(NUM_DISPLAY_BUFS, bufSize,
BufferGfx_getBufferAttrs(&gfxAttrs));
if (hBufTab == NULL) {
ERR("Failed to create BufTab for display pipe\n");
cleanup(THREAD_FAILURE);
}
............
/* Main loop */
while (!gblGetQuit()) {
if (ret != Dmai_EFIRSTFIELD) {
/* Get a displayed frame from the display thread */
fifoRet = Fifo_get(envp->hDisplayOutFifo, &hDispBuf);
if (fifoRet != Dmai_EOK) {
cleanup(THREAD_FAILURE);
}
/* Did the display thread flush the fifo? */
if (fifoRet == Dmai_EFLUSH) {
cleanup(THREAD_SUCCESS);
}
/* The display thread is no longer using the buffer */
hDstBuf = BufTab_getBuf(hBufTab, Buffer_getId(hDispBuf));
Buffer_freeUseMask(hDstBuf, DISPLAY_FREE);
/* Keep track of the number of buffers sent to the display thread */
numDisplayBufs--;
/* Get a free buffer from the BufTab to give to the codec */
hDstBuf = BufTab_getFreeBuf(hBufTab);
if (hDstBuf == NULL) {
ERR("Failed to get free buffer from BufTab\n");
BufTab_print(hBufTab);
cleanup(THREAD_FAILURE);
}
}
/* Make sure the whole buffer is used for output */
BufferGfx_resetDimensions(hDstBuf);
if (getVidParamChange() & DECODE_PARAM_CHANGES) {
clsVidParamChange(DECODE_PARAM_CHANGES);
if (hVd2) {
Vdec2_delete(hVd2);
}
if (hBufTab) {
BufTab_delete(hBufTab);
}
goto myPrime;
}
/* Decode the video buffer */
ret = Vdec2_process(hVd2, hInBuf, hDstBuf);
if (ret < 0) {
ERR("Failed to decode video buffer\n");
cleanup(THREAD_FAILURE);
}
.............
In main loop, before Vdec2_process , i check the video parameters to determine which stream i need to decode ,and then goto the "myPrime" to reinitialize the Params and recreate decoder and buftab again .
When i run the programm , in the beginning it can run correctly , but after several times cycles (decode A->decode B->decode A->decode B..........),the buftab returns error:
Error: Failed to get free buffer from BufTab
BufTab:
[0] @ 0x441d3000 (0x8544e000 phys) numBytes 718848 (718848) useMask 2 (3) ref no
Width 704 (704) Height 576 (576) Pos 24x24 LineLength 768 (704)
[1] @ 0x4434d000 (0x855c8000 phys) numBytes 718848 (718848) useMask 2 (3) ref no
Width 704, Height 576, LineLength 704
[2] @ 0x444c7000 (0x85742000 phys) numBytes 718848 (718848) useMask 2 (3) ref no
Width 704, Height 576, LineLength 704
[3] @ 0x44641000 (0x858bc000 phys) numBytes 718848 (718848) useMask 2 (3) ref no
Width 704, Height 576, LineLength 704
[4] @ 0x447bb000 (0x85a36000 phys) numBytes 718848 (718848) useMask 2 (3) ref no
Width 704, Height 576, LineLength 704
[5] @ 0x44935000 (0x85bb0000 phys) numBytes 718848 (718848) useMask 2 (3) ref no
Width 704, Height 576, LineLength 704
[6] @ 0x44aaf000 (0x85d2a000 phys) numBytes 718848 (718848) useMask 2 (3) ref no
Width 704, Height 576, LineLength 704
[7] @ 0x44c29000 (0x85ea4000 phys) numBytes 718848 (718848) useMask 2 (3) ref no
Width 704, Height 576, LineLength 704
[8] @ 0x44da3000 (0x8601e000 phys) numBytes 718848 (718848) useMask 2 (3) ref no
Width 704, Height 576, LineLength 704
[9] @ 0x44f1d000 (0x86198000 phys) numBytes 718848 (718848) useMask 2 (3) ref no
Width 704, Height 576, LineLength 704
[10] @ 0x45097000 (0x86312000 phys) numBytes 718848 (718848) useMask 2 (3) ref no
Width 704, Height 576, LineLength 704
[11] @ 0x45211000 (0x8648c000 phys) numBytes 718848 (718848) useMask 2 (3) ref no
Width 704, Height 576, LineLength 704
[12] @ 0x4538b000 (0x86606000 phys) numBytes 718848 (718848) useMask 2 (3) ref no
Width 704, Height 576, LineLength 704
[13] @ 0x45505000 (0x86780000 phys) numBytes 718848 (718848) useMask 2 (3) ref no
Width 704, Height 576, LineLength 704
[14] @ 0x4567f000 (0x868fa000 phys) numBytes 718848 (718848) useMask 2 (3) ref no
Width 704, Height 576, LineLength 704
[15] @ 0x457f9000 (0x86a74000 phys) numBytes 718848 (718848) useMask 2 (3) ref no
Width 704 (704) Height 576 (576) Pos 24x24 LineLength 768 (704)
[16] @ 0x45973000 (0x87d58000 phys) numBytes 718848 (718848) useMask 2 (3) ref no
Width 704 (704) Height 576 (576) Pos 24x24 LineLength 768 (704)
[17] @ 0x45c06000 (0x87a04000 phys) numBytes 718848 (718848) useMask 1 (3) ref no
Width 704 (704) Height 576 (576) Pos 24x24 LineLength 768 (704)
I really don't known which step is wrong , and how to debug, So i really need your help . Any advice will be appreciate.
Best regards.
Katee
